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Remove libobjc and other Objective-C related components, as these are

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extremely outdated, and not used by anything in the base system.

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This commit is contained in:
Dimitry Andric 2011-04-17 21:03:23 +00:00
parent af77c5286d
commit 6d67f69487
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=220755
95 changed files with 126 additions and 36675 deletions
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1
Makefile.inc1
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@ -306,7 +306,6 @@ LIB32WMAKEENV+= MAKEOBJDIRPREFIX=${OBJTREE}/lib32 \
PATH=${TMPPATH} \
CC="${CC} ${LIB32FLAGS}" \
CXX="${CXX} ${LIB32FLAGS}" \
OBJC="${OBJC} ${LIB32FLAGS}" \
LIBDIR=/usr/lib32 \
SHLIBDIR=/usr/lib32

20
ObsoleteFiles.inc
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@ -38,6 +38,26 @@
# xargs -n1 | sort | uniq -d;
# done
# 20110417: removal of Objective-C support
OLD_FILES+=usr/include/objc/encoding.h
OLD_FILES+=usr/include/objc/hash.h
OLD_FILES+=usr/include/objc/NXConstStr.h
OLD_FILES+=usr/include/objc/objc-api.h
OLD_FILES+=usr/include/objc/objc-decls.h
OLD_FILES+=usr/include/objc/objc-list.h
OLD_FILES+=usr/include/objc/objc.h
OLD_FILES+=usr/include/objc/Object.h
OLD_FILES+=usr/include/objc/Protocol.h
OLD_FILES+=usr/include/objc/runtime.h
OLD_FILES+=usr/include/objc/sarray.h
OLD_FILES+=usr/include/objc/thr.h
OLD_FILES+=usr/include/objc/typedstream.h
OLD_FILES+=usr/lib/libobjc.a
OLD_FILES+=usr/lib/libobjc.so
OLD_FILES+=usr/lib/libobjc_p.a
OLD_FILES+=usr/libexec/cc1obj
OLD_LIBS+=usr/lib/libobjc.so.4
OLD_DIRS+=usr/include/objc
# 20110224: sticky.8 -> sticky.7
OLD_FILES+=usr/share/man/man8/sticky.8.gz
# 20110220: new clang import which bumps version from 2.8 to 2.9

35
contrib/gcc/doc/cpp.1
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@ -153,14 +153,14 @@ before compilation. It is called a macro processor because it allows
you to define \fImacros\fR, which are brief abbreviations for longer
constructs.
.PP
The C preprocessor is intended to be used only with C, \*(C+, and
Objective-C source code. In the past, it has been abused as a general
text processor. It will choke on input which does not obey C's lexical
rules. For example, apostrophes will be interpreted as the beginning of
character constants, and cause errors. Also, you cannot rely on it
preserving characteristics of the input which are not significant to
C\-family languages. If a Makefile is preprocessed, all the hard tabs
will be removed, and the Makefile will not work.
The C preprocessor is intended to be used only with C and \*(C+ source
code. In the past, it has been abused as a general text processor. It
will choke on input which does not obey C's lexical rules. For
example, apostrophes will be interpreted as the beginning of character
constants, and cause errors. Also, you cannot rely on it preserving
characteristics of the input which are not significant to C\-family
languages. If a Makefile is preprocessed, all the hard tabs will be
removed, and the Makefile will not work.
.PP
Having said that, you can often get away with using cpp on things which
are not C. Other Algol-ish programming languages are often safe
@ -482,19 +482,16 @@ header files.
.PD 0
.IP "\fB\-x c++\fR" 4
.IX Item "-x c++"
.IP "\fB\-x objective-c\fR" 4
.IX Item "-x objective-c"
.IP "\fB\-x assembler-with-cpp\fR" 4
.IX Item "-x assembler-with-cpp"
.PD
Specify the source language: C, \*(C+, Objective\-C, or assembly. This has
nothing to do with standards conformance or extensions; it merely
selects which base syntax to expect. If you give none of these options,
cpp will deduce the language from the extension of the source file:
\&\fB.c\fR, \fB.cc\fR, \fB.m\fR, or \fB.S\fR. Some other common
extensions for \*(C+ and assembly are also recognized. If cpp does not
recognize the extension, it will treat the file as C; this is the most
generic mode.
Specify the source language: C, \*(C+, or assembly. This has nothing
to do with standards conformance or extensions; it merely selects which
base syntax to expect. If you give none of these options, cpp will
deduce the language from the extension of the source file: \&\fB.c\fR,
\fB.cc\fR, or \fB.S\fR. Some other common extensions for \*(C+ and
assembly are also recognized. If cpp does not recognize the extension,
it will treat the file as C; this is the most generic mode.
.Sp
\&\fINote:\fR Previous versions of cpp accepted a \fB\-lang\fR option
which selected both the language and the standards conformance level.
@ -854,8 +851,6 @@ configuration of \s-1GCC\s0.
.IX Item "C_INCLUDE_PATH"
.IP "\fB\s-1CPLUS_INCLUDE_PATH\s0\fR" 4
.IX Item "CPLUS_INCLUDE_PATH"
.IP "\fB\s-1OBJC_INCLUDE_PATH\s0\fR" 4
.IX Item "OBJC_INCLUDE_PATH"
.PD
Each variable's value is a list of directories separated by a special
character, much like \fB\s-1PATH\s0\fR, in which to look for header files.

82
contrib/gcc/doc/cpp.texi
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@ -72,9 +72,9 @@ This manual contains no Invariant Sections. The Front-Cover Texts are
@ifnottex
@node Top
@top
The C preprocessor implements the macro language used to transform C,
C++, and Objective-C programs before they are compiled. It can also be
useful on its own.
The C preprocessor implements the macro language used to transform C
and C++ programs before they are compiled. It can also be useful on
its own.
@menu
* Overview::
@ -186,14 +186,14 @@ before compilation. It is called a macro processor because it allows
you to define @dfn{macros}, which are brief abbreviations for longer
constructs.
The C preprocessor is intended to be used only with C, C++, and
Objective-C source code. In the past, it has been abused as a general
text processor. It will choke on input which does not obey C's lexical
rules. For example, apostrophes will be interpreted as the beginning of
character constants, and cause errors. Also, you cannot rely on it
preserving characteristics of the input which are not significant to
C-family languages. If a Makefile is preprocessed, all the hard tabs
will be removed, and the Makefile will not work.
The C preprocessor is intended to be used only with C and C++ source
code. In the past, it has been abused as a general text processor. It
will choke on input which does not obey C's lexical rules. For
example, apostrophes will be interpreted as the beginning of character
constants, and cause errors. Also, you cannot rely on it preserving
characteristics of the input which are not significant to C-family
languages. If a Makefile is preprocessed, all the hard tabs will be
removed, and the Makefile will not work.
Having said that, you can often get away with using cpp on things which
are not C@. Other Algol-ish programming languages are often safe
@ -1878,7 +1878,7 @@ the 1999 revision of the C standard. Support for the 1999 revision is
not yet complete.
This macro is not defined if the @option{-traditional-cpp} option is
used, nor when compiling C++ or Objective-C@.
used, nor when compiling C++.
@item __STDC_HOSTED__
This macro is defined, with value 1, if the compiler's target is a
@ -1895,11 +1895,6 @@ GNU C++ compiler is not yet fully conforming, so it uses @code{1}
instead. It is hoped to complete the implementation of standard C++
in the near future.
@item __OBJC__
This macro is defined, with value 1, when the Objective-C compiler is in
use. You can use @code{__OBJC__} to test whether a header is compiled
by a C compiler or a Objective-C compiler.
@item __ASSEMBLER__
This macro is defined with value 1 when preprocessing assembly
language.
@ -1921,9 +1916,9 @@ underscores.
@itemx __GNUC_MINOR__
@itemx __GNUC_PATCHLEVEL__
These macros are defined by all GNU compilers that use the C
preprocessor: C, C++, and Objective-C@. Their values are the major
version, minor version, and patch level of the compiler, as integer
constants. For example, GCC 3.2.1 will define @code{__GNUC__} to 3,
preprocessor: C and C++. Their values are the major version, minor
version, and patch level of the compiler, as integer constants. For
example, GCC 3.2.1 will define @code{__GNUC__} to 3,
@code{__GNUC_MINOR__} to 2, and @code{__GNUC_PATCHLEVEL__} to 1. These
macros are also defined if you invoke the preprocessor directly.
@ -2125,12 +2120,6 @@ general, user code should not need to make use of this macro; the
purpose of this macro is to ease implementation of the C++ runtime
library provided with G++.
@item __NEXT_RUNTIME__
This macro is defined, with value 1, if (and only if) the NeXT runtime
(as in @option{-fnext-runtime}) is in use for Objective-C@. If the GNU
runtime is used, this macro is not defined, so that you can use this
macro to determine which runtime (NeXT or GNU) is being used.
@item __LP64__
@itemx _LP64
These macros are defined, with value 1, if (and only if) the compilation
@ -3433,11 +3422,10 @@ produce no output, rather than a line of output containing just a
@node Preprocessor Output
@chapter Preprocessor Output
When the C preprocessor is used with the C, C++, or Objective-C
compilers, it is integrated into the compiler and communicates a stream
of binary tokens directly to the compiler's parser. However, it can
also be used in the more conventional standalone mode, where it produces
textual output.
When the C preprocessor is used with the C or C++ compilers, it is
integrated into the compiler and communicates a stream of binary tokens
directly to the compiler's parser. However, it can also be used in the
more conventional standalone mode, where it produces textual output.
@c FIXME: Document the library interface.
@cindex output format
@ -4053,33 +4041,13 @@ You can also make or cancel assertions using command line options.
@node Obsolete once-only headers
@subsection Obsolete once-only headers
CPP supports two more ways of indicating that a header file should be
read only once. Neither one is as portable as a wrapper @samp{#ifndef},
and we recommend you do not use them in new programs.
CPP supports one more way of indicating that a header file should be
read only once. This is not as portable as a wrapper @samp{#ifndef},
and we recommend you do not use it in new programs.
@findex #import
In the Objective-C language, there is a variant of @samp{#include}
called @samp{#import} which includes a file, but does so at most once.
If you use @samp{#import} instead of @samp{#include}, then you don't
need the conditionals inside the header file to prevent multiple
inclusion of the contents. GCC permits the use of @samp{#import} in C
and C++ as well as Objective-C@. However, it is not in standard C or C++
and should therefore not be used by portable programs.
@samp{#import} is not a well designed feature. It requires the users of
a header file to know that it should only be included once. It is much
better for the header file's implementor to write the file so that users
don't need to know this. Using a wrapper @samp{#ifndef} accomplishes
this goal.
In the present implementation, a single use of @samp{#import} will
prevent the file from ever being read again, by either @samp{#import} or
@samp{#include}. You should not rely on this; do not use both
@samp{#import} and @samp{#include} to refer to the same header file.
Another way to prevent a header file from being included more than once
is with the @samp{#pragma once} directive. If @samp{#pragma once} is
seen when scanning a header file, that file will never be read again, no
A way to prevent a header file from being included more than once is
with the @samp{#pragma once} directive. If @samp{#pragma once} is seen
when scanning a header file, that file will never be read again, no
matter what.
@samp{#pragma once} does not have the problems that @samp{#import} does,

3
contrib/gcc/doc/cppenv.texi
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@ -14,9 +14,6 @@
@item CPATH
@itemx C_INCLUDE_PATH
@itemx CPLUS_INCLUDE_PATH
@itemx OBJC_INCLUDE_PATH
@c Commented out until ObjC++ is part of GCC:
@c @itemx OBJCPLUS_INCLUDE_PATH
Each variable's value is a list of directories separated by a special
character, much like @env{PATH}, in which to look for header files.
The special character, @code{PATH_SEPARATOR}, is target-dependent and

28
contrib/gcc/doc/cppinternals.texi
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@ -72,10 +72,10 @@ into another language, under the above conditions for modified versions.
The GNU C preprocessor is
implemented as a library, @dfn{cpplib}, so it can be easily shared between
a stand-alone preprocessor, and a preprocessor integrated with the C,
C++ and Objective-C front ends. It is also available for use by other
programs, though this is not recommended as its exposed interface has
not yet reached a point of reasonable stability.
a stand-alone preprocessor, and a preprocessor integrated with the C
and C++ front ends. It is also available for use by other programs,
though this is not recommended as its exposed interface has not yet
reached a point of reasonable stability.
The library has been written to be re-entrant, so that it can be used
to preprocess many files simultaneously if necessary. It has also been
@ -91,7 +91,7 @@ the way they have.
@menu
* Conventions:: Conventions used in the code.
* Lexer:: The combined C, C++ and Objective-C Lexer.
* Lexer:: The combined C and C++ Lexer.
* Hash Nodes:: All identifiers are entered into a hash table.
* Macro Expansion:: Macro expansion algorithm.
* Token Spacing:: Spacing and paste avoidance issues.
@ -131,12 +131,12 @@ behavior.
@section Overview
The lexer is contained in the file @file{lex.c}. It is a hand-coded
lexer, and not implemented as a state machine. It can understand C, C++
and Objective-C source code, and has been extended to allow reasonably
successful preprocessing of assembly language. The lexer does not make
an initial pass to strip out trigraphs and escaped newlines, but handles
them as they are encountered in a single pass of the input file. It
returns preprocessing tokens individually, not a line at a time.
lexer, and not implemented as a state machine. It can understand C and
C++ source code, and has been extended to allow reasonably successful
preprocessing of assembly language. The lexer does not make an initial
pass to strip out trigraphs and escaped newlines, but handles them as
they are encountered in a single pass of the input file. It returns
preprocessing tokens individually, not a line at a time.
It is mostly transparent to users of the library, since the library's
interface for obtaining the next token, @code{cpp_get_token}, takes care
@ -303,9 +303,9 @@ don't allow the terminators of header names to be escaped; the first
@samp{"} or @samp{>} terminates the header name.
Interpretation of some character sequences depends upon whether we are
lexing C, C++ or Objective-C, and on the revision of the standard in
force. For example, @samp{::} is a single token in C++, but in C it is
two separate @samp{:} tokens and almost certainly a syntax error. Such
lexing C or C++, and on the revision of the standard in force. For
example, @samp{::} is a single token in C++, but in C it is two
separate @samp{:} tokens and almost certainly a syntax error. Such
cases are handled by @code{_cpp_lex_direct} based upon command-line
flags stored in the @code{cpp_options} structure.

16
contrib/gcc/doc/cppopts.texi
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@ -347,17 +347,15 @@ current directory.
@end ifclear
@item -x c
@itemx -x c++
@itemx -x objective-c
@itemx -x assembler-with-cpp
@opindex x
Specify the source language: C, C++, Objective-C, or assembly. This has
nothing to do with standards conformance or extensions; it merely
selects which base syntax to expect. If you give none of these options,
cpp will deduce the language from the extension of the source file:
@samp{.c}, @samp{.cc}, @samp{.m}, or @samp{.S}. Some other common
extensions for C++ and assembly are also recognized. If cpp does not
recognize the extension, it will treat the file as C; this is the most
generic mode.
Specify the source language: C, C++, or assembly. This has nothing to
do with standards conformance or extensions; it merely selects which
base syntax to expect. If you give none of these options, cpp will
deduce the language from the extension of the source file: @samp{.c},
@samp{.cc}, or @samp{.S}. Some other common extensions for C++ and
assembly are also recognized. If cpp does not recognize the extension,
it will treat the file as C; this is the most generic mode.
@emph{Note:} Previous versions of cpp accepted a @option{-lang} option
which selected both the language and the standards conformance level.

19
contrib/gcc/doc/extend.texi
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@ -16,9 +16,9 @@ any of these features is used.) To test for the availability of these
features in conditional compilation, check for a predefined macro
@code{__GNUC__}, which is always defined under GCC@.
These extensions are available in C and Objective-C@. Most of them are
also available in C++. @xref{C++ Extensions,,Extensions to the
C++ Language}, for extensions that apply @emph{only} to C++.
These extensions are available in C. Most of them are also available
in C++. @xref{C++ Extensions,,Extensions to the C++ Language}, for
extensions that apply @emph{only} to C++.
Some features that are in ISO C99 but not C89 or C++ are also, as
extensions, accepted by GCC in C89 mode and in C++.
@ -1716,8 +1716,6 @@ been called. Functions with these attributes are useful for
initializing data that will be used implicitly during the execution of
the program.
These attributes are not currently implemented for Objective-C@.
@item deprecated
@cindex @code{deprecated} attribute.
The @code{deprecated} attribute results in a warning if the function
@ -2605,9 +2603,9 @@ Preprocessing Directives, cpp, The GNU C Preprocessor}.
This section describes the syntax with which @code{__attribute__} may be
used, and the constructs to which attribute specifiers bind, for the C
language. Some details may vary for C++ and Objective-C@. Because of
infelicities in the grammar for attributes, some forms described here
may not be successfully parsed in all cases.
language. Some details may vary for C++. Because of infelicities in
the grammar for attributes, some forms described here may not be
successfully parsed in all cases.
There are some problems with the semantics of attributes in C++. For
example, there are no manglings for attributes, although they may affect
@ -9896,9 +9894,8 @@ The Solaris target supports @code{#pragma redefine_extname}
Increase the minimum alignment of each @var{variable} to @var{alignment}.
This is the same as GCC's @code{aligned} attribute @pxref{Variable
Attributes}). Macro expansion occurs on the arguments to this pragma
when compiling C and Objective-C. It does not currently occur when
compiling C++, but this is a bug which may be fixed in a future
release.
when compiling C. It does not currently occur when compiling C++, but
this is a bug which may be fixed in a future release.
@item fini (@var{function} [, @var{function}]...)
@cindex pragma, fini

8
contrib/gcc/doc/frontends.texi
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@ -12,13 +12,10 @@
@cindex Ada
@cindex Fortran
@cindex Java
@cindex Objective-C
@cindex Objective-C++
@cindex treelang
GCC stands for ``GNU Compiler Collection''. GCC is an integrated
distribution of compilers for several major programming languages. These
languages currently include C, C++, Objective-C, Objective-C++, Java,
Fortran, and Ada.
languages currently include C, C++, Java, Fortran, and Ada.
The abbreviation @dfn{GCC} has multiple meanings in common use. The
current official meaning is ``GNU Compiler Collection'', which refers
@ -59,5 +56,4 @@ have been implemented as ``preprocessors'' which emit another high
level language such as C@. None of the compilers included in GCC are
implemented this way; they all generate machine code directly. This
sort of preprocessor should not be confused with the @dfn{C
preprocessor}, which is an integral feature of the C, C++, Objective-C
and Objective-C++ languages.
preprocessor}, which is an integral feature of the C and C++ languages.

326
contrib/gcc/doc/gcc.1
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@ -219,22 +219,6 @@ in the following sections.
\&\-Wno\-non\-template\-friend \-Wold\-style\-cast
\&\-Woverloaded\-virtual \-Wno\-pmf\-conversions
\&\-Wsign\-promo\fR
.IP "\fIObjective-C and Objective\-\*(C+ Language Options\fR" 4
.IX Item "Objective-C and Objective- Language Options"
\&\fB\-fconstant\-string\-class=\fR\fIclass-name\fR
\&\fB\-fgnu\-runtime \-fnext\-runtime
\&\-fno\-nil\-receivers
\&\-fobjc\-call\-cxx\-cdtors
\&\-fobjc\-direct\-dispatch
\&\-fobjc\-exceptions
\&\-fobjc\-gc
\&\-freplace\-objc\-classes
\&\-fzero\-link
\&\-gen\-decls
\&\-Wassign\-intercept
\&\-Wno\-protocol \-Wselector
\&\-Wstrict\-selector\-match
\&\-Wundeclared\-selector\fR
.IP "\fILanguage Independent Options\fR" 4
.IX Item "Language Independent Options"
\&\fB\-fmessage\-length=\fR\fIn\fR
@ -815,29 +799,9 @@ C source code which should not be preprocessed.
.IP "\fIfile\fR\fB.ii\fR" 4
.IX Item "file.ii"
\&\*(C+ source code which should not be preprocessed.
.IP "\fIfile\fR\fB.m\fR" 4
.IX Item "file.m"
Objective-C source code. Note that you must link with the \fIlibobjc\fR
library to make an Objective-C program work.
.IP "\fIfile\fR\fB.mi\fR" 4
.IX Item "file.mi"
Objective-C source code which should not be preprocessed.
.IP "\fIfile\fR\fB.mm\fR" 4
.IX Item "file.mm"
.PD 0
.IP "\fIfile\fR\fB.M\fR" 4
.IX Item "file.M"
.PD
Objective\-\*(C+ source code. Note that you must link with the \fIlibobjc\fR
library to make an Objective\-\*(C+ program work. Note that \fB.M\fR refers
to a literal capital M.
.IP "\fIfile\fR\fB.mii\fR" 4
.IX Item "file.mii"
Objective\-\*(C+ source code which should not be preprocessed.
.IP "\fIfile\fR\fB.h\fR" 4
.IX Item "file.h"
C, \*(C+, Objective-C or Objective\-\*(C+ header file to be turned into a
precompiled header.
C, or \*(C+ header file to be turned into a precompiled header.
.IP "\fIfile\fR\fB.cc\fR" 4
.IX Item "file.cc"
.PD 0
@ -857,16 +821,6 @@ precompiled header.
\&\*(C+ source code which must be preprocessed. Note that in \fB.cxx\fR,
the last two letters must both be literally \fBx\fR. Likewise,
\&\fB.C\fR refers to a literal capital C.
.IP "\fIfile\fR\fB.mm\fR" 4
.IX Item "file.mm"
.PD 0
.IP "\fIfile\fR\fB.M\fR" 4
.IX Item "file.M"
.PD
Objective\-\*(C+ source code which must be preprocessed.
.IP "\fIfile\fR\fB.mii\fR" 4
.IX Item "file.mii"
Objective\-\*(C+ source code which should not be preprocessed.
.IP "\fIfile\fR\fB.hh\fR" 4
.IX Item "file.hh"
.PD 0
@ -941,8 +895,6 @@ the next \fB\-x\fR option. Possible values for \fIlanguage\fR are:
.Vb 9
\& c c-header c-cpp-output
\& c++ c++-header c++-cpp-output
\& objective-c objective-c-header objective-c-cpp-output
\& objective-c++ objective-c++-header objective-c++-cpp-output
\& assembler assembler-with-cpp
\& ada
\& f95 f95-cpp-input
@ -1095,8 +1047,7 @@ languages; or options that are meaningful only for \*(C+ programs.
.Sh "Options Controlling C Dialect"
.IX Subsection "Options Controlling C Dialect"
The following options control the dialect of C (or languages derived
from C, such as \*(C+, Objective-C and Objective\-\*(C+) that the compiler
accepts:
from C, such as \*(C+) that the compiler accepts:
.IP "\fB\-ansi\fR" 4
.IX Item "-ansi"
In C mode, support all \s-1ISO\s0 C90 programs. In \*(C+ mode,
@ -1840,251 +1791,6 @@ unsignedness, but the standard mandates the current behavior.
.Sp
In this example, G++ will synthesize a default \fBA& operator =
(const A&);\fR, while cfront will use the user-defined \fBoperator =\fR.
.Sh "Options Controlling Objective-C and Objective\-\*(C+ Dialects"
.IX Subsection "Options Controlling Objective-C and Objective- Dialects"
(\s-1NOTE:\s0 This manual does not describe the Objective-C and Objective\-\*(C+
languages themselves. See
.PP
This section describes the command-line options that are only meaningful
for Objective-C and Objective\-\*(C+ programs, but you can also use most of
the language-independent \s-1GNU\s0 compiler options.
For example, you might compile a file \f(CW\*(C`some_class.m\*(C'\fR like this:
.PP
.Vb 1
\& gcc -g -fgnu-runtime -O -c some_class.m
.Ve
.PP
In this example, \fB\-fgnu\-runtime\fR is an option meant only for
Objective-C and Objective\-\*(C+ programs; you can use the other options with
any language supported by \s-1GCC\s0.
.PP
Note that since Objective-C is an extension of the C language, Objective-C
compilations may also use options specific to the C front-end (e.g.,
\&\fB\-Wtraditional\fR). Similarly, Objective\-\*(C+ compilations may use
\&\*(C+\-specific options (e.g., \fB\-Wabi\fR).
.PP
Here is a list of options that are \fIonly\fR for compiling Objective-C
and Objective\-\*(C+ programs:
.IP "\fB\-fconstant\-string\-class=\fR\fIclass-name\fR" 4
.IX Item "-fconstant-string-class=class-name"
Use \fIclass-name\fR as the name of the class to instantiate for each
literal string specified with the syntax \f(CW\*(C`@"..."\*(C'\fR. The default
class name is \f(CW\*(C`NXConstantString\*(C'\fR if the \s-1GNU\s0 runtime is being used, and
\&\f(CW\*(C`NSConstantString\*(C'\fR if the NeXT runtime is being used (see below). The
\&\fB\-fconstant\-cfstrings\fR option, if also present, will override the
\&\fB\-fconstant\-string\-class\fR setting and cause \f(CW\*(C`@"..."\*(C'\fR literals
to be laid out as constant CoreFoundation strings.
.IP "\fB\-fgnu\-runtime\fR" 4
.IX Item "-fgnu-runtime"
Generate object code compatible with the standard \s-1GNU\s0 Objective-C
runtime. This is the default for most types of systems.
.IP "\fB\-fnext\-runtime\fR" 4
.IX Item "-fnext-runtime"
Generate output compatible with the NeXT runtime. This is the default
for NeXT-based systems, including Darwin and Mac \s-1OS\s0 X. The macro
\&\f(CW\*(C`_\|_NEXT_RUNTIME_\|_\*(C'\fR is predefined if (and only if) this option is
used.
.IP "\fB\-fno\-nil\-receivers\fR" 4
.IX Item "-fno-nil-receivers"
Assume that all Objective-C message dispatches (e.g.,
\&\f(CW\*(C`[receiver message:arg]\*(C'\fR) in this translation unit ensure that the receiver
is not \f(CW\*(C`nil\*(C'\fR. This allows for more efficient entry points in the runtime
to be used. Currently, this option is only available in conjunction with
the NeXT runtime on Mac \s-1OS\s0 X 10.3 and later.
.IP "\fB\-fobjc\-call\-cxx\-cdtors\fR" 4
.IX Item "-fobjc-call-cxx-cdtors"
For each Objective-C class, check if any of its instance variables is a
\&\*(C+ object with a non-trivial default constructor. If so, synthesize a
special \f(CW\*(C`\- (id) .cxx_construct\*(C'\fR instance method that will run
non-trivial default constructors on any such instance variables, in order,
and then return \f(CW\*(C`self\*(C'\fR. Similarly, check if any instance variable
is a \*(C+ object with a non-trivial destructor, and if so, synthesize a
special \f(CW\*(C`\- (void) .cxx_destruct\*(C'\fR method that will run
all such default destructors, in reverse order.
.Sp
The \f(CW\*(C`\- (id) .cxx_construct\*(C'\fR and/or \f(CW\*(C`\- (void) .cxx_destruct\*(C'\fR methods
thusly generated will only operate on instance variables declared in the
current Objective-C class, and not those inherited from superclasses. It
is the responsibility of the Objective-C runtime to invoke all such methods
in an object's inheritance hierarchy. The \f(CW\*(C`\- (id) .cxx_construct\*(C'\fR methods
will be invoked by the runtime immediately after a new object
instance is allocated; the \f(CW\*(C`\- (void) .cxx_destruct\*(C'\fR methods will
be invoked immediately before the runtime deallocates an object instance.
.Sp
As of this writing, only the NeXT runtime on Mac \s-1OS\s0 X 10.4 and later has
support for invoking the \f(CW\*(C`\- (id) .cxx_construct\*(C'\fR and
\&\f(CW\*(C`\- (void) .cxx_destruct\*(C'\fR methods.
.IP "\fB\-fobjc\-direct\-dispatch\fR" 4
.IX Item "-fobjc-direct-dispatch"
Allow fast jumps to the message dispatcher. On Darwin this is
accomplished via the comm page.
.IP "\fB\-fobjc\-exceptions\fR" 4
.IX Item "-fobjc-exceptions"
Enable syntactic support for structured exception handling in Objective\-C,
similar to what is offered by \*(C+ and Java. This option is
unavailable in conjunction with the NeXT runtime on Mac \s-1OS\s0 X 10.2 and
earlier.
.Sp
.Vb 23
\& @try {
\& ...
\& @throw expr;
\& ...
\& }
\& @catch (AnObjCClass *exc) {
\& ...
\& @throw expr;
\& ...
\& @throw;
\& ...
\& }
\& @catch (AnotherClass *exc) {
\& ...
\& }
\& @catch (id allOthers) {
\& ...
\& }
\& @finally {
\& ...
\& @throw expr;
\& ...
\& }
.Ve
.Sp
The \f(CW@throw\fR statement may appear anywhere in an Objective-C or
Objective\-\*(C+ program; when used inside of a \f(CW@catch\fR block, the
\&\f(CW@throw\fR may appear without an argument (as shown above), in which case
the object caught by the \f(CW@catch\fR will be rethrown.
.Sp
Note that only (pointers to) Objective-C objects may be thrown and
caught using this scheme. When an object is thrown, it will be caught
by the nearest \f(CW@catch\fR clause capable of handling objects of that type,
analogously to how \f(CW\*(C`catch\*(C'\fR blocks work in \*(C+ and Java. A
\&\f(CW\*(C`@catch(id ...)\*(C'\fR clause (as shown above) may also be provided to catch
any and all Objective-C exceptions not caught by previous \f(CW@catch\fR
clauses (if any).
.Sp
The \f(CW@finally\fR clause, if present, will be executed upon exit from the
immediately preceding \f(CW\*(C`@try ... @catch\*(C'\fR section. This will happen
regardless of whether any exceptions are thrown, caught or rethrown
inside the \f(CW\*(C`@try ... @catch\*(C'\fR section, analogously to the behavior
of the \f(CW\*(C`finally\*(C'\fR clause in Java.
.Sp
There are several caveats to using the new exception mechanism:
.RS 4
.IP "*" 4
Although currently designed to be binary compatible with \f(CW\*(C`NS_HANDLER\*(C'\fR\-style
idioms provided by the \f(CW\*(C`NSException\*(C'\fR class, the new
exceptions can only be used on Mac \s-1OS\s0 X 10.3 (Panther) and later
systems, due to additional functionality needed in the (NeXT) Objective-C
runtime.
.IP "*" 4
As mentioned above, the new exceptions do not support handling
types other than Objective-C objects. Furthermore, when used from
Objective\-\*(C+, the Objective-C exception model does not interoperate with \*(C+
exceptions at this time. This means you cannot \f(CW@throw\fR an exception
from Objective-C and \f(CW\*(C`catch\*(C'\fR it in \*(C+, or vice versa
(i.e., \f(CW\*(C`throw ... @catch\*(C'\fR).
.RE
.RS 4
.Sp
The \fB\-fobjc\-exceptions\fR switch also enables the use of synchronization
blocks for thread-safe execution:
.Sp
.Vb 3
\& @synchronized (ObjCClass *guard) {
\& ...
\& }
.Ve
.Sp
Upon entering the \f(CW@synchronized\fR block, a thread of execution shall
first check whether a lock has been placed on the corresponding \f(CW\*(C`guard\*(C'\fR
object by another thread. If it has, the current thread shall wait until
the other thread relinquishes its lock. Once \f(CW\*(C`guard\*(C'\fR becomes available,
the current thread will place its own lock on it, execute the code contained in
the \f(CW@synchronized\fR block, and finally relinquish the lock (thereby
making \f(CW\*(C`guard\*(C'\fR available to other threads).
.Sp
Unlike Java, Objective-C does not allow for entire methods to be marked
\&\f(CW@synchronized\fR. Note that throwing exceptions out of
\&\f(CW@synchronized\fR blocks is allowed, and will cause the guarding object
to be unlocked properly.
.RE
.IP "\fB\-fobjc\-gc\fR" 4
.IX Item "-fobjc-gc"
Enable garbage collection (\s-1GC\s0) in Objective-C and Objective\-\*(C+ programs.
.IP "\fB\-freplace\-objc\-classes\fR" 4
.IX Item "-freplace-objc-classes"
Emit a special marker instructing \fB\f(BIld\fB\|(1)\fR not to statically link in
the resulting object file, and allow \fB\f(BIdyld\fB\|(1)\fR to load it in at
run time instead. This is used in conjunction with the Fix-and-Continue
debugging mode, where the object file in question may be recompiled and
dynamically reloaded in the course of program execution, without the need
to restart the program itself. Currently, Fix-and-Continue functionality
is only available in conjunction with the NeXT runtime on Mac \s-1OS\s0 X 10.3
and later.
.IP "\fB\-fzero\-link\fR" 4
.IX Item "-fzero-link"
When compiling for the NeXT runtime, the compiler ordinarily replaces calls
to \f(CW\*(C`objc_getClass("...")\*(C'\fR (when the name of the class is known at
compile time) with static class references that get initialized at load time,
which improves run-time performance. Specifying the \fB\-fzero\-link\fR flag
suppresses this behavior and causes calls to \f(CW\*(C`objc_getClass("...")\*(C'\fR
to be retained. This is useful in Zero-Link debugging mode, since it allows
for individual class implementations to be modified during program execution.
.IP "\fB\-gen\-decls\fR" 4
.IX Item "-gen-decls"
Dump interface declarations for all classes seen in the source file to a
file named \fI\fIsourcename\fI.decl\fR.
.IP "\fB\-Wassign\-intercept\fR" 4
.IX Item "-Wassign-intercept"
Warn whenever an Objective-C assignment is being intercepted by the
garbage collector.
.IP "\fB\-Wno\-protocol\fR" 4
.IX Item "-Wno-protocol"
If a class is declared to implement a protocol, a warning is issued for
every method in the protocol that is not implemented by the class. The
default behavior is to issue a warning for every method not explicitly
implemented in the class, even if a method implementation is inherited
from the superclass. If you use the \fB\-Wno\-protocol\fR option, then
methods inherited from the superclass are considered to be implemented,
and no warning is issued for them.
.IP "\fB\-Wselector\fR" 4
.IX Item "-Wselector"
Warn if multiple methods of different types for the same selector are
found during compilation. The check is performed on the list of methods
in the final stage of compilation. Additionally, a check is performed
for each selector appearing in a \f(CW\*(C`@selector(...)\*(C'\fR
expression, and a corresponding method for that selector has been found
during compilation. Because these checks scan the method table only at
the end of compilation, these warnings are not produced if the final
stage of compilation is not reached, for example because an error is
found during compilation, or because the \fB\-fsyntax\-only\fR option is
being used.
.IP "\fB\-Wstrict\-selector\-match\fR" 4
.IX Item "-Wstrict-selector-match"
Warn if multiple methods with differing argument and/or return types are
found for a given selector when attempting to send a message using this
selector to a receiver of type \f(CW\*(C`id\*(C'\fR or \f(CW\*(C`Class\*(C'\fR. When this flag
is off (which is the default behavior), the compiler will omit such warnings
if any differences found are confined to types which share the same size
and alignment.
.IP "\fB\-Wundeclared\-selector\fR" 4
.IX Item "-Wundeclared-selector"
Warn if a \f(CW\*(C`@selector(...)\*(C'\fR expression referring to an
undeclared selector is found. A selector is considered undeclared if no
method with that name has been declared before the
\&\f(CW\*(C`@selector(...)\*(C'\fR expression, either explicitly in an
\&\f(CW@interface\fR or \f(CW@protocol\fR declaration, or implicitly in
an \f(CW@implementation\fR section. This option always performs its
checks as soon as a \f(CW\*(C`@selector(...)\*(C'\fR expression is found,
while \fB\-Wselector\fR only performs its checks in the final stage of
compilation. This also enforces the coding style convention
that methods and selectors must be declared before being used.
.IP "\fB\-print\-objc\-runtime\-info\fR" 4
.IX Item "-print-objc-runtime-info"
Generate C header describing the largest structure that is passed by
value, if any.
.Sh "Options to Control Diagnostic Messages Formatting"
.IX Subsection "Options to Control Diagnostic Messages Formatting"
Traditionally, diagnostic messages have been formatted irrespective of
@ -2136,8 +1842,7 @@ two forms, whichever is not the default.
.PP
The following options control the amount and kinds of warnings produced
by \s-1GCC\s0; for further, language-specific options also refer to
\&\fB\*(C+ Dialect Options\fR and \fBObjective-C and Objective\-\*(C+ Dialect
Options\fR.
\&\fB\*(C+ Dialect Options\fR.
.IP "\fB\-fsyntax\-only\fR" 4
.IX Item "-fsyntax-only"
Check the code for syntax errors, but don't do anything beyond that.
@ -2287,8 +1992,8 @@ requiring a non-null value by the \f(CW\*(C`nonnull\*(C'\fR function attribute.
.Sp
\&\fB\-Wnonnull\fR is included in \fB\-Wall\fR and \fB\-Wformat\fR. It
can be disabled with the \fB\-Wno\-nonnull\fR option.
.IP "\fB\-Winit\-self\fR (C, \*(C+, Objective-C and Objective\-\*(C+ only)" 4
.IX Item "-Winit-self (C, , Objective-C and Objective- only)"
.IP "\fB\-Winit\-self\fR (C, \*(C+ only)" 4
.IX Item "-Winit-self (C, only)"
Warn about uninitialized variables which are initialized with themselves.
Note this option can only be used with the \fB\-Wuninitialized\fR option,
which in turn only works with \fB\-O1\fR and above.
@ -2339,8 +2044,8 @@ bracketed, but that for \fBb\fR is fully bracketed.
.Ve
.Sp
This warning is enabled by \fB\-Wall\fR.
.IP "\fB\-Wmissing\-include\-dirs\fR (C, \*(C+, Objective-C and Objective\-\*(C+ only)" 4
.IX Item "-Wmissing-include-dirs (C, , Objective-C and Objective- only)"
.IP "\fB\-Wmissing\-include\-dirs\fR (C and \*(C+ only)" 4
.IX Item "-Wmissing-include-dirs (C, only)"
Warn if a user-supplied include directory does not exist.
.IP "\fB\-Wparentheses\fR" 4
.IX Item "-Wparentheses"
@ -2675,8 +2380,7 @@ All of the above \fB\-W\fR options combined. This enables all the
warnings about constructions that some users consider questionable, and
that are easy to avoid (or modify to prevent the warning), even in
conjunction with macros. This also enables some language-specific
warnings described in \fB\*(C+ Dialect Options\fR and
\&\fBObjective-C and Objective\-\*(C+ Dialect Options\fR.
warnings described in \fB\*(C+ Dialect Options\fR.
.PP
The following \fB\-W...\fR options are not implied by \fB\-Wall\fR.
Some of them warn about constructions that users generally do not
@ -3224,8 +2928,8 @@ itself is likely to take inordinate amounts of time.
.IP "\fB\-Wpointer\-sign\fR" 4
.IX Item "-Wpointer-sign"
Warn for pointer argument passing or assignment with different signedness.
This option is only supported for C and Objective\-C. It is implied by
\&\fB\-Wall\fR and by \fB\-pedantic\fR, which can be disabled with
This option is only supported for C. It is implied by \&\fB\-Wall\fR
and by \fB\-pedantic\fR, which can be disabled with
\&\fB\-Wno\-pointer\-sign\fR.
.IP "\fB\-Werror\fR" 4
.IX Item "-Werror"
@ -6294,12 +5998,10 @@ current directory.
.PD 0
.IP "\fB\-x c++\fR" 4
.IX Item "-x c++"
.IP "\fB\-x objective-c\fR" 4
.IX Item "-x objective-c"
.IP "\fB\-x assembler-with-cpp\fR" 4
.IX Item "-x assembler-with-cpp"
.PD
Specify the source language: C, \*(C+, Objective\-C, or assembly. This has
Specify the source language: C, \*(C+, or assembly. This has
nothing to do with standards conformance or extensions; it merely
selects which base syntax to expect. If you give none of these options,
cpp will deduce the language from the extension of the source file:
@ -6728,10 +6430,6 @@ ordinary object file, it is linked in the usual fashion. The only
difference between using an \fB\-l\fR option and specifying a file name
is that \fB\-l\fR surrounds \fIlibrary\fR with \fBlib\fR and \fB.a\fR
and searches several directories.
.IP "\fB\-lobjc\fR" 4
.IX Item "-lobjc"
You need this special case of the \fB\-l\fR option in order to
link an Objective-C or Objective\-\*(C+ program.
.IP "\fB\-nostartfiles\fR" 4
.IX Item "-nostartfiles"
Do not use the standard system startup files when linking.
@ -13035,8 +12733,6 @@ preprocessor.
.IX Item "C_INCLUDE_PATH"
.IP "\fB\s-1CPLUS_INCLUDE_PATH\s0\fR" 4
.IX Item "CPLUS_INCLUDE_PATH"
.IP "\fB\s-1OBJC_INCLUDE_PATH\s0\fR" 4
.IX Item "OBJC_INCLUDE_PATH"
.PD
Each variable's value is a list of directories separated by a special
character, much like \fB\s-1PATH\s0\fR, in which to look for header files.

2
contrib/gcc/doc/gcc.texi
View File

@ -129,7 +129,6 @@ Introduction, gccint, GNU Compiler Collection (GCC) Internals}.
* C Implementation:: How GCC implements the ISO C specification.
* C Extensions:: GNU extensions to the C language family.
* C++ Extensions:: GNU extensions to the C++ language.
* Objective-C:: GNU Objective-C runtime features.
* Compatibility:: Binary Compatibility
* Gcov:: @command{gcov}---a test coverage program.
* Trouble:: If you have trouble using GCC.
@ -154,7 +153,6 @@ Introduction, gccint, GNU Compiler Collection (GCC) Internals}.
@include invoke.texi
@include implement-c.texi
@include extend.texi
@include objc.texi
@include compat.texi
@include gcov.texi
@include trouble.texi

348
contrib/gcc/doc/invoke.texi
View File

@ -124,8 +124,6 @@ only one of these two forms, whichever one is not the default.
* Invoking G++:: Compiling C++ programs.
* C Dialect Options:: Controlling the variant of C language compiled.
* C++ Dialect Options:: Variations on C++.
* Objective-C and Objective-C++ Dialect Options:: Variations on Objective-C
and Objective-C++.
* Language Independent Options:: Controlling how diagnostics should be
formatted.
* Warning Options:: How picky should the compiler be?
@ -195,24 +193,6 @@ in the following sections.
-Woverloaded-virtual -Wno-pmf-conversions @gol
-Wsign-promo}
@item Objective-C and Objective-C++ Language Options
@xref{Objective-C and Objective-C++ Dialect Options,,Options Controlling
Objective-C and Objective-C++ Dialects}.
@gccoptlist{-fconstant-string-class=@var{class-name} @gol
-fgnu-runtime -fnext-runtime @gol
-fno-nil-receivers @gol
-fobjc-call-cxx-cdtors @gol
-fobjc-direct-dispatch @gol
-fobjc-exceptions @gol
-fobjc-gc @gol
-freplace-objc-classes @gol
-fzero-link @gol
-gen-decls @gol
-Wassign-intercept @gol
-Wno-protocol -Wselector @gol
-Wstrict-selector-match @gol
-Wundeclared-selector}
@item Language Independent Options
@xref{Language Independent Options,,Options to Control Diagnostic Messages Formatting}.
@gccoptlist{-fmessage-length=@var{n} @gol
@ -795,8 +775,6 @@ See S/390 and zSeries Options.
or preprocessed source.
* C Dialect Options:: Controlling the variant of C language compiled.
* C++ Dialect Options:: Variations on C++.
* Objective-C and Objective-C++ Dialect Options:: Variations on Objective-C
and Objective-C++.
* Language Independent Options:: Controlling how diagnostics should be
formatted.
* Warning Options:: How picky should the compiler be?
@ -837,25 +815,8 @@ C source code which should not be preprocessed.
@item @var{file}.ii
C++ source code which should not be preprocessed.
@item @var{file}.m
Objective-C source code. Note that you must link with the @file{libobjc}
library to make an Objective-C program work.
@item @var{file}.mi
Objective-C source code which should not be preprocessed.
@item @var{file}.mm
@itemx @var{file}.M
Objective-C++ source code. Note that you must link with the @file{libobjc}
library to make an Objective-C++ program work. Note that @samp{.M} refers
to a literal capital M@.
@item @var{file}.mii
Objective-C++ source code which should not be preprocessed.
@item @var{file}.h
C, C++, Objective-C or Objective-C++ header file to be turned into a
precompiled header.
C, or C++ header file to be turned into a precompiled header.
@item @var{file}.cc
@itemx @var{file}.cp
@ -868,13 +829,6 @@ C++ source code which must be preprocessed. Note that in @samp{.cxx},
the last two letters must both be literally @samp{x}. Likewise,
@samp{.C} refers to a literal capital C@.
@item @var{file}.mm
@itemx @var{file}.M
Objective-C++ source code which must be preprocessed.
@item @var{file}.mii
Objective-C++ source code which should not be preprocessed.
@item @var{file}.hh
@itemx @var{file}.H
C++ header file to be turned into a precompiled header.
@ -946,8 +900,6 @@ the next @option{-x} option. Possible values for @var{language} are:
@smallexample
c c-header c-cpp-output
c++ c++-header c++-cpp-output
objective-c objective-c-header objective-c-cpp-output
objective-c++ objective-c++-header objective-c++-cpp-output
assembler assembler-with-cpp
ada
f95 f95-cpp-input
@ -1121,8 +1073,7 @@ explanations of options that are meaningful only for C++ programs.
@cindex options, dialect
The following options control the dialect of C (or languages derived
from C, such as C++, Objective-C and Objective-C++) that the compiler
accepts:
from C, such as C++) that the compiler accepts:
@table @gcctabopt
@cindex ANSI support
@ -1955,278 +1906,6 @@ In this example, G++ will synthesize a default @samp{A& operator =
(const A&);}, while cfront will use the user-defined @samp{operator =}.
@end table
@node Objective-C and Objective-C++ Dialect Options
@section Options Controlling Objective-C and Objective-C++ Dialects
@cindex compiler options, Objective-C and Objective-C++
@cindex Objective-C and Objective-C++ options, command line
@cindex options, Objective-C and Objective-C++
(NOTE: This manual does not describe the Objective-C and Objective-C++
languages themselves. See @xref{Standards,,Language Standards
Supported by GCC}, for references.)
This section describes the command-line options that are only meaningful
for Objective-C and Objective-C++ programs, but you can also use most of
the language-independent GNU compiler options.
For example, you might compile a file @code{some_class.m} like this:
@smallexample
gcc -g -fgnu-runtime -O -c some_class.m
@end smallexample
@noindent
In this example, @option{-fgnu-runtime} is an option meant only for
Objective-C and Objective-C++ programs; you can use the other options with
any language supported by GCC@.
Note that since Objective-C is an extension of the C language, Objective-C
compilations may also use options specific to the C front-end (e.g.,
@option{-Wtraditional}). Similarly, Objective-C++ compilations may use
C++-specific options (e.g., @option{-Wabi}).
Here is a list of options that are @emph{only} for compiling Objective-C
and Objective-C++ programs:
@table @gcctabopt
@item -fconstant-string-class=@var{class-name}
@opindex fconstant-string-class
Use @var{class-name} as the name of the class to instantiate for each
literal string specified with the syntax @code{@@"@dots{}"}. The default
class name is @code{NXConstantString} if the GNU runtime is being used, and
@code{NSConstantString} if the NeXT runtime is being used (see below). The
@option{-fconstant-cfstrings} option, if also present, will override the
@option{-fconstant-string-class} setting and cause @code{@@"@dots{}"} literals
to be laid out as constant CoreFoundation strings.
@item -fgnu-runtime
@opindex fgnu-runtime
Generate object code compatible with the standard GNU Objective-C
runtime. This is the default for most types of systems.
@item -fnext-runtime
@opindex fnext-runtime
Generate output compatible with the NeXT runtime. This is the default
for NeXT-based systems, including Darwin and Mac OS X@. The macro
@code{__NEXT_RUNTIME__} is predefined if (and only if) this option is
used.
@item -fno-nil-receivers
@opindex fno-nil-receivers
Assume that all Objective-C message dispatches (e.g.,
@code{[receiver message:arg]}) in this translation unit ensure that the receiver
is not @code{nil}. This allows for more efficient entry points in the runtime
to be used. Currently, this option is only available in conjunction with
the NeXT runtime on Mac OS X 10.3 and later.
@item -fobjc-call-cxx-cdtors
@opindex fobjc-call-cxx-cdtors
For each Objective-C class, check if any of its instance variables is a
C++ object with a non-trivial default constructor. If so, synthesize a
special @code{- (id) .cxx_construct} instance method that will run
non-trivial default constructors on any such instance variables, in order,
and then return @code{self}. Similarly, check if any instance variable
is a C++ object with a non-trivial destructor, and if so, synthesize a
special @code{- (void) .cxx_destruct} method that will run
all such default destructors, in reverse order.
The @code{- (id) .cxx_construct} and/or @code{- (void) .cxx_destruct} methods
thusly generated will only operate on instance variables declared in the
current Objective-C class, and not those inherited from superclasses. It
is the responsibility of the Objective-C runtime to invoke all such methods
in an object's inheritance hierarchy. The @code{- (id) .cxx_construct} methods
will be invoked by the runtime immediately after a new object
instance is allocated; the @code{- (void) .cxx_destruct} methods will
be invoked immediately before the runtime deallocates an object instance.
As of this writing, only the NeXT runtime on Mac OS X 10.4 and later has
support for invoking the @code{- (id) .cxx_construct} and
@code{- (void) .cxx_destruct} methods.
@item -fobjc-direct-dispatch
@opindex fobjc-direct-dispatch
Allow fast jumps to the message dispatcher. On Darwin this is
accomplished via the comm page.
@item -fobjc-exceptions
@opindex fobjc-exceptions
Enable syntactic support for structured exception handling in Objective-C,
similar to what is offered by C++ and Java. This option is
unavailable in conjunction with the NeXT runtime on Mac OS X 10.2 and
earlier.
@smallexample
@@try @{
@dots{}
@@throw expr;
@dots{}
@}
@@catch (AnObjCClass *exc) @{
@dots{}
@@throw expr;
@dots{}
@@throw;
@dots{}
@}
@@catch (AnotherClass *exc) @{
@dots{}
@}
@@catch (id allOthers) @{
@dots{}
@}
@@finally @{
@dots{}
@@throw expr;
@dots{}
@}
@end smallexample
The @code{@@throw} statement may appear anywhere in an Objective-C or
Objective-C++ program; when used inside of a @code{@@catch} block, the
@code{@@throw} may appear without an argument (as shown above), in which case
the object caught by the @code{@@catch} will be rethrown.
Note that only (pointers to) Objective-C objects may be thrown and
caught using this scheme. When an object is thrown, it will be caught
by the nearest @code{@@catch} clause capable of handling objects of that type,
analogously to how @code{catch} blocks work in C++ and Java. A
@code{@@catch(id @dots{})} clause (as shown above) may also be provided to catch
any and all Objective-C exceptions not caught by previous @code{@@catch}
clauses (if any).
The @code{@@finally} clause, if present, will be executed upon exit from the
immediately preceding @code{@@try @dots{} @@catch} section. This will happen
regardless of whether any exceptions are thrown, caught or rethrown
inside the @code{@@try @dots{} @@catch} section, analogously to the behavior
of the @code{finally} clause in Java.
There are several caveats to using the new exception mechanism:
@itemize @bullet
@item
Although currently designed to be binary compatible with @code{NS_HANDLER}-style
idioms provided by the @code{NSException} class, the new
exceptions can only be used on Mac OS X 10.3 (Panther) and later
systems, due to additional functionality needed in the (NeXT) Objective-C
runtime.
@item
As mentioned above, the new exceptions do not support handling
types other than Objective-C objects. Furthermore, when used from
Objective-C++, the Objective-C exception model does not interoperate with C++
exceptions at this time. This means you cannot @code{@@throw} an exception
from Objective-C and @code{catch} it in C++, or vice versa
(i.e., @code{throw @dots{} @@catch}).
@end itemize
The @option{-fobjc-exceptions} switch also enables the use of synchronization
blocks for thread-safe execution:
@smallexample
@@synchronized (ObjCClass *guard) @{
@dots{}
@}
@end smallexample
Upon entering the @code{@@synchronized} block, a thread of execution shall
first check whether a lock has been placed on the corresponding @code{guard}
object by another thread. If it has, the current thread shall wait until
the other thread relinquishes its lock. Once @code{guard} becomes available,
the current thread will place its own lock on it, execute the code contained in
the @code{@@synchronized} block, and finally relinquish the lock (thereby
making @code{guard} available to other threads).
Unlike Java, Objective-C does not allow for entire methods to be marked
@code{@@synchronized}. Note that throwing exceptions out of
@code{@@synchronized} blocks is allowed, and will cause the guarding object
to be unlocked properly.
@item -fobjc-gc
@opindex fobjc-gc
Enable garbage collection (GC) in Objective-C and Objective-C++ programs.
@item -freplace-objc-classes
@opindex freplace-objc-classes
Emit a special marker instructing @command{ld(1)} not to statically link in
the resulting object file, and allow @command{dyld(1)} to load it in at
run time instead. This is used in conjunction with the Fix-and-Continue
debugging mode, where the object file in question may be recompiled and
dynamically reloaded in the course of program execution, without the need
to restart the program itself. Currently, Fix-and-Continue functionality
is only available in conjunction with the NeXT runtime on Mac OS X 10.3
and later.
@item -fzero-link
@opindex fzero-link
When compiling for the NeXT runtime, the compiler ordinarily replaces calls
to @code{objc_getClass("@dots{}")} (when the name of the class is known at
compile time) with static class references that get initialized at load time,
which improves run-time performance. Specifying the @option{-fzero-link} flag
suppresses this behavior and causes calls to @code{objc_getClass("@dots{}")}
to be retained. This is useful in Zero-Link debugging mode, since it allows
for individual class implementations to be modified during program execution.
@item -gen-decls
@opindex gen-decls
Dump interface declarations for all classes seen in the source file to a
file named @file{@var{sourcename}.decl}.
@item -Wassign-intercept
@opindex Wassign-intercept
Warn whenever an Objective-C assignment is being intercepted by the
garbage collector.
@item -Wno-protocol
@opindex Wno-protocol
If a class is declared to implement a protocol, a warning is issued for
every method in the protocol that is not implemented by the class. The
default behavior is to issue a warning for every method not explicitly
implemented in the class, even if a method implementation is inherited
from the superclass. If you use the @option{-Wno-protocol} option, then
methods inherited from the superclass are considered to be implemented,
and no warning is issued for them.
@item -Wselector
@opindex Wselector
Warn if multiple methods of different types for the same selector are
found during compilation. The check is performed on the list of methods
in the final stage of compilation. Additionally, a check is performed
for each selector appearing in a @code{@@selector(@dots{})}
expression, and a corresponding method for that selector has been found
during compilation. Because these checks scan the method table only at
the end of compilation, these warnings are not produced if the final
stage of compilation is not reached, for example because an error is
found during compilation, or because the @option{-fsyntax-only} option is
being used.
@item -Wstrict-selector-match
@opindex Wstrict-selector-match
Warn if multiple methods with differing argument and/or return types are
found for a given selector when attempting to send a message using this
selector to a receiver of type @code{id} or @code{Class}. When this flag
is off (which is the default behavior), the compiler will omit such warnings
if any differences found are confined to types which share the same size
and alignment.
@item -Wundeclared-selector
@opindex Wundeclared-selector
Warn if a @code{@@selector(@dots{})} expression referring to an
undeclared selector is found. A selector is considered undeclared if no
method with that name has been declared before the
@code{@@selector(@dots{})} expression, either explicitly in an
@code{@@interface} or @code{@@protocol} declaration, or implicitly in
an @code{@@implementation} section. This option always performs its
checks as soon as a @code{@@selector(@dots{})} expression is found,
while @option{-Wselector} only performs its checks in the final stage of
compilation. This also enforces the coding style convention
that methods and selectors must be declared before being used.
@item -print-objc-runtime-info
@opindex print-objc-runtime-info
Generate C header describing the largest structure that is passed by
value, if any.
@end table
@node Language Independent Options
@section Options to Control Diagnostic Messages Formatting
@cindex options to control diagnostics formatting
@ -2294,8 +1973,7 @@ two forms, whichever is not the default.
The following options control the amount and kinds of warnings produced
by GCC; for further, language-specific options also refer to
@ref{C++ Dialect Options} and @ref{Objective-C and Objective-C++ Dialect
Options}.
@ref{C++ Dialect Options}.
@table @gcctabopt
@cindex syntax checking
@ -2468,7 +2146,7 @@ requiring a non-null value by the @code{nonnull} function attribute.
@option{-Wnonnull} is included in @option{-Wall} and @option{-Wformat}. It
can be disabled with the @option{-Wno-nonnull} option.
@item -Winit-self @r{(C, C++, Objective-C and Objective-C++ only)}
@item -Winit-self @r{(C and C++ only)}
@opindex Winit-self
Warn about uninitialized variables which are initialized with themselves.
Note this option can only be used with the @option{-Wuninitialized} option,
@ -2525,7 +2203,7 @@ int b[2][2] = @{ @{ 0, 1 @}, @{ 2, 3 @} @};
This warning is enabled by @option{-Wall}.
@item -Wmissing-include-dirs @r{(C, C++, Objective-C and Objective-C++ only)}
@item -Wmissing-include-dirs @r{(C and C++ only)}
@opindex Wmissing-include-dirs
Warn if a user-supplied include directory does not exist.
@ -2893,8 +2571,7 @@ All of the above @samp{-W} options combined. This enables all the
warnings about constructions that some users consider questionable, and
that are easy to avoid (or modify to prevent the warning), even in
conjunction with macros. This also enables some language-specific
warnings described in @ref{C++ Dialect Options} and
@ref{Objective-C and Objective-C++ Dialect Options}.
warnings described in @ref{C++ Dialect Options}.
@end table
The following @option{-W@dots{}} options are not implied by @option{-Wall}.
@ -3545,8 +3222,8 @@ itself is likely to take inordinate amounts of time.
@opindex Wpointer-sign
@opindex Wno-pointer-sign
Warn for pointer argument passing or assignment with different signedness.
This option is only supported for C and Objective-C@. It is implied by
@option{-Wall} and by @option{-pedantic}, which can be disabled with
This option is only supported for C. It is implied by @option{-Wall}
and by @option{-pedantic}, which can be disabled with
@option{-Wno-pointer-sign}.
@item -Werror
@ -6538,11 +6215,6 @@ difference between using an @option{-l} option and specifying a file name
is that @option{-l} surrounds @var{library} with @samp{lib} and @samp{.a}
and searches several directories.
@item -lobjc
@opindex lobjc
You need this special case of the @option{-l} option in order to
link an Objective-C or Objective-C++ program.
@item -nostartfiles
@opindex nostartfiles
Do not use the standard system startup files when linking.
@ -7218,7 +6890,9 @@ first argument in the outfiles array and replaces it with the second argument.
is a small example of its usage:
@smallexample
%@{fgnu-runtime:%:replace-outfile(-lobjc -lobjc-gnu)@}
%@{static|static-libgcc|static-libstdc++:%:replace-outfile(-lstdc++ \
libstdc++.a%s)@}
@end smallexample
@end table

478
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@ -1,478 +0,0 @@
@c Copyright (C) 1988, 1989, 1992, 1993, 1994, 1995, 1996, 1997, 1998,
@c 1999, 2000, 2001, 2002, 2003, 2004, 2005 Free Software Foundation, Inc.
@c This is part of the GCC manual.
@c For copying conditions, see the file gcc.texi.
@node Objective-C
@comment node-name, next, previous, up
@chapter GNU Objective-C runtime features
This document is meant to describe some of the GNU Objective-C runtime
features. It is not intended to teach you Objective-C, there are several
resources on the Internet that present the language. Questions and
comments about this document to Ovidiu Predescu
@email{ovidiu@@cup.hp.com}.
@menu
* Executing code before main::
* Type encoding::
* Garbage Collection::
* Constant string objects::
* compatibility_alias::
@end menu
@node Executing code before main, Type encoding, Objective-C, Objective-C
@section @code{+load}: Executing code before main
The GNU Objective-C runtime provides a way that allows you to execute
code before the execution of the program enters the @code{main}
function. The code is executed on a per-class and a per-category basis,
through a special class method @code{+load}.
This facility is very useful if you want to initialize global variables
which can be accessed by the program directly, without sending a message
to the class first. The usual way to initialize global variables, in the
@code{+initialize} method, might not be useful because
@code{+initialize} is only called when the first message is sent to a
class object, which in some cases could be too late.
Suppose for example you have a @code{FileStream} class that declares
@code{Stdin}, @code{Stdout} and @code{Stderr} as global variables, like
below:
@smallexample
FileStream *Stdin = nil;
FileStream *Stdout = nil;
FileStream *Stderr = nil;
@@implementation FileStream
+ (void)initialize
@{
Stdin = [[FileStream new] initWithFd:0];
Stdout = [[FileStream new] initWithFd:1];
Stderr = [[FileStream new] initWithFd:2];
@}
/* @r{Other methods here} */
@@end
@end smallexample
In this example, the initialization of @code{Stdin}, @code{Stdout} and
@code{Stderr} in @code{+initialize} occurs too late. The programmer can
send a message to one of these objects before the variables are actually
initialized, thus sending messages to the @code{nil} object. The
@code{+initialize} method which actually initializes the global
variables is not invoked until the first message is sent to the class
object. The solution would require these variables to be initialized
just before entering @code{main}.
The correct solution of the above problem is to use the @code{+load}
method instead of @code{+initialize}:
@smallexample
@@implementation FileStream
+ (void)load
@{
Stdin = [[FileStream new] initWithFd:0];
Stdout = [[FileStream new] initWithFd:1];
Stderr = [[FileStream new] initWithFd:2];
@}
/* @r{Other methods here} */
@@end
@end smallexample
The @code{+load} is a method that is not overridden by categories. If a
class and a category of it both implement @code{+load}, both methods are
invoked. This allows some additional initializations to be performed in
a category.
This mechanism is not intended to be a replacement for @code{+initialize}.
You should be aware of its limitations when you decide to use it
instead of @code{+initialize}.
@menu
* What you can and what you cannot do in +load::
@end menu
@node What you can and what you cannot do in +load, , Executing code before main, Executing code before main
@subsection What you can and what you cannot do in @code{+load}
The @code{+load} implementation in the GNU runtime guarantees you the following
things:
@itemize @bullet
@item
you can write whatever C code you like;
@item
you can send messages to Objective-C constant strings (@code{@@"this is a
constant string"});
@item
you can allocate and send messages to objects whose class is implemented
in the same file;
@item
the @code{+load} implementation of all super classes of a class are executed before the @code{+load} of that class is executed;
@item
the @code{+load} implementation of a class is executed before the
@code{+load} implementation of any category.
@end itemize
In particular, the following things, even if they can work in a
particular case, are not guaranteed:
@itemize @bullet
@item
allocation of or sending messages to arbitrary objects;
@item
allocation of or sending messages to objects whose classes have a
category implemented in the same file;
@end itemize
You should make no assumptions about receiving @code{+load} in sibling
classes when you write @code{+load} of a class. The order in which
sibling classes receive @code{+load} is not guaranteed.
The order in which @code{+load} and @code{+initialize} are called could
be problematic if this matters. If you don't allocate objects inside
@code{+load}, it is guaranteed that @code{+load} is called before
@code{+initialize}. If you create an object inside @code{+load} the
@code{+initialize} method of object's class is invoked even if
@code{+load} was not invoked. Note if you explicitly call @code{+load}
on a class, @code{+initialize} will be called first. To avoid possible
problems try to implement only one of these methods.
The @code{+load} method is also invoked when a bundle is dynamically
loaded into your running program. This happens automatically without any
intervening operation from you. When you write bundles and you need to
write @code{+load} you can safely create and send messages to objects whose
classes already exist in the running program. The same restrictions as
above apply to classes defined in bundle.
@node Type encoding, Garbage Collection, Executing code before main, Objective-C
@section Type encoding
The Objective-C compiler generates type encodings for all the
types. These type encodings are used at runtime to find out information
about selectors and methods and about objects and classes.
The types are encoded in the following way:
@c @sp 1
@multitable @columnfractions .25 .75
@item @code{_Bool}
@tab @code{B}
@item @code{char}
@tab @code{c}
@item @code{unsigned char}
@tab @code{C}
@item @code{short}
@tab @code{s}
@item @code{unsigned short}
@tab @code{S}
@item @code{int}
@tab @code{i}
@item @code{unsigned int}
@tab @code{I}
@item @code{long}
@tab @code{l}
@item @code{unsigned long}
@tab @code{L}
@item @code{long long}
@tab @code{q}
@item @code{unsigned long long}
@tab @code{Q}
@item @code{float}
@tab @code{f}
@item @code{double}
@tab @code{d}
@item @code{void}
@tab @code{v}
@item @code{id}
@tab @code{@@}
@item @code{Class}
@tab @code{#}
@item @code{SEL}
@tab @code{:}
@item @code{char*}
@tab @code{*}
@item unknown type
@tab @code{?}
@item Complex types
@tab @code{j} followed by the inner type. For example @code{_Complex double} is encoded as "jd".
@item bit-fields
@tab @code{b} followed by the starting position of the bit-field, the type of the bit-field and the size of the bit-field (the bit-fields encoding was changed from the NeXT's compiler encoding, see below)
@end multitable
@c @sp 1
The encoding of bit-fields has changed to allow bit-fields to be properly
handled by the runtime functions that compute sizes and alignments of
types that contain bit-fields. The previous encoding contained only the
size of the bit-field. Using only this information it is not possible to
reliably compute the size occupied by the bit-field. This is very
important in the presence of the Boehm's garbage collector because the
objects are allocated using the typed memory facility available in this
collector. The typed memory allocation requires information about where
the pointers are located inside the object.
The position in the bit-field is the position, counting in bits, of the
bit closest to the beginning of the structure.
The non-atomic types are encoded as follows:
@c @sp 1
@multitable @columnfractions .2 .8
@item pointers
@tab @samp{^} followed by the pointed type.
@item arrays
@tab @samp{[} followed by the number of elements in the array followed by the type of the elements followed by @samp{]}
@item structures
@tab @samp{@{} followed by the name of the structure (or @samp{?} if the structure is unnamed), the @samp{=} sign, the type of the members and by @samp{@}}
@item unions
@tab @samp{(} followed by the name of the structure (or @samp{?} if the union is unnamed), the @samp{=} sign, the type of the members followed by @samp{)}
@end multitable
Here are some types and their encodings, as they are generated by the
compiler on an i386 machine:
@sp 1
@multitable @columnfractions .25 .75
@item Objective-C type
@tab Compiler encoding
@item
@smallexample
int a[10];
@end smallexample
@tab @code{[10i]}
@item
@smallexample
struct @{
int i;
float f[3];
int a:3;
int b:2;
char c;
@}
@end smallexample
@tab @code{@{?=i[3f]b128i3b131i2c@}}
@end multitable
@sp 1
In addition to the types the compiler also encodes the type
specifiers. The table below describes the encoding of the current
Objective-C type specifiers:
@sp 1
@multitable @columnfractions .25 .75
@item Specifier
@tab Encoding
@item @code{const}
@tab @code{r}
@item @code{in}
@tab @code{n}
@item @code{inout}
@tab @code{N}
@item @code{out}
@tab @code{o}
@item @code{bycopy}
@tab @code{O}
@item @code{oneway}
@tab @code{V}
@end multitable
@sp 1
The type specifiers are encoded just before the type. Unlike types
however, the type specifiers are only encoded when they appear in method
argument types.
@node Garbage Collection, Constant string objects, Type encoding, Objective-C
@section Garbage Collection
Support for a new memory management policy has been added by using a
powerful conservative garbage collector, known as the
Boehm-Demers-Weiser conservative garbage collector. It is available from
@w{@uref{http://www.hpl.hp.com/personal/Hans_Boehm/gc/}}.
To enable the support for it you have to configure the compiler using an
additional argument, @w{@option{--enable-objc-gc}}. You need to have
garbage collector installed before building the compiler. This will
build an additional runtime library which has several enhancements to
support the garbage collector. The new library has a new name,
@file{libobjc_gc.a} to not conflict with the non-garbage-collected
library.
When the garbage collector is used, the objects are allocated using the
so-called typed memory allocation mechanism available in the
Boehm-Demers-Weiser collector. This mode requires precise information on
where pointers are located inside objects. This information is computed
once per class, immediately after the class has been initialized.
There is a new runtime function @code{class_ivar_set_gcinvisible()}
which can be used to declare a so-called @dfn{weak pointer}
reference. Such a pointer is basically hidden for the garbage collector;
this can be useful in certain situations, especially when you want to
keep track of the allocated objects, yet allow them to be
collected. This kind of pointers can only be members of objects, you
cannot declare a global pointer as a weak reference. Every type which is
a pointer type can be declared a weak pointer, including @code{id},
@code{Class} and @code{SEL}.
Here is an example of how to use this feature. Suppose you want to
implement a class whose instances hold a weak pointer reference; the
following class does this:
@smallexample
@@interface WeakPointer : Object
@{
const void* weakPointer;
@}
- initWithPointer:(const void*)p;
- (const void*)weakPointer;
@@end
@@implementation WeakPointer
+ (void)initialize
@{
class_ivar_set_gcinvisible (self, "weakPointer", YES);
@}
- initWithPointer:(const void*)p
@{
weakPointer = p;
return self;
@}
- (const void*)weakPointer
@{
return weakPointer;
@}
@@end
@end smallexample
Weak pointers are supported through a new type character specifier
represented by the @samp{!} character. The
@code{class_ivar_set_gcinvisible()} function adds or removes this
specifier to the string type description of the instance variable named
as argument.
@c =========================================================================
@node Constant string objects
@section Constant string objects
GNU Objective-C provides constant string objects that are generated
directly by the compiler. You declare a constant string object by
prefixing a C constant string with the character @samp{@@}:
@smallexample
id myString = @@"this is a constant string object";
@end smallexample
The constant string objects are by default instances of the
@code{NXConstantString} class which is provided by the GNU Objective-C
runtime. To get the definition of this class you must include the
@file{objc/NXConstStr.h} header file.
User defined libraries may want to implement their own constant string
class. To be able to support them, the GNU Objective-C compiler provides
a new command line options @option{-fconstant-string-class=@var{class-name}}.
The provided class should adhere to a strict structure, the same
as @code{NXConstantString}'s structure:
@smallexample
@@interface MyConstantStringClass
@{
Class isa;
char *c_string;
unsigned int len;
@}
@@end
@end smallexample
@code{NXConstantString} inherits from @code{Object}; user class
libraries may choose to inherit the customized constant string class
from a different class than @code{Object}. There is no requirement in
the methods the constant string class has to implement, but the final
ivar layout of the class must be the compatible with the given
structure.
When the compiler creates the statically allocated constant string
object, the @code{c_string} field will be filled by the compiler with
the string; the @code{length} field will be filled by the compiler with
the string length; the @code{isa} pointer will be filled with
@code{NULL} by the compiler, and it will later be fixed up automatically
at runtime by the GNU Objective-C runtime library to point to the class
which was set by the @option{-fconstant-string-class} option when the
object file is loaded (if you wonder how it works behind the scenes, the
name of the class to use, and the list of static objects to fixup, are
stored by the compiler in the object file in a place where the GNU
runtime library will find them at runtime).
As a result, when a file is compiled with the
@option{-fconstant-string-class} option, all the constant string objects
will be instances of the class specified as argument to this option. It
is possible to have multiple compilation units referring to different
constant string classes, neither the compiler nor the linker impose any
restrictions in doing this.
@c =========================================================================
@node compatibility_alias
@section compatibility_alias
This is a feature of the Objective-C compiler rather than of the
runtime, anyway since it is documented nowhere and its existence was
forgotten, we are documenting it here.
The keyword @code{@@compatibility_alias} allows you to define a class name
as equivalent to another class name. For example:
@smallexample
@@compatibility_alias WOApplication GSWApplication;
@end smallexample
tells the compiler that each time it encounters @code{WOApplication} as
a class name, it should replace it with @code{GSWApplication} (that is,
@code{WOApplication} is just an alias for @code{GSWApplication}).
There are some constraints on how this can be used---
@itemize @bullet
@item @code{WOApplication} (the alias) must not be an existing class;
@item @code{GSWApplication} (the real class) must be an existing class.
@end itemize

14
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@ -75,9 +75,6 @@ The Java runtime library.
The @code{libmudflap} library, used for instrumenting pointer and array
dereferencing operations.
@item libobjc
The Objective-C and Objective-C++ runtime library.
@item libstdc++-v3
The C++ runtime library.
@ -125,8 +122,7 @@ The @file{gcc} directory contains the following subdirectories:
@item @var{language}
Subdirectories for various languages. Directories containing a file
@file{config-lang.in} are language subdirectories. The contents of
the subdirectories @file{cp} (for C++), @file{objc} (for Objective-C)
and @file{objcp} (for Objective-C++) are documented in this manual
the subdirectory @file{cp} (for C++) is documented in this manual
(@pxref{Passes, , Passes and Files of the Compiler}); those for other
languages are not. @xref{Front End, , Anatomy of a Language Front End},
for details of the files in these directories.
@ -449,7 +445,7 @@ A pointer to the GNU Service Directory.
@end table
FIXME: document such files in subdirectories, at least @file{config},
@file{cp}, @file{objc}, @file{testsuite}.
@file{cp}, @file{testsuite}.
@node Front End
@subsection Anatomy of a Language Front End
@ -682,13 +678,11 @@ Java front end depends on the C++ front end, so sets
@samp{lang_requires=c++}.
@item subdir_requires
If defined, this variable lists (space-separated) front end directories
other than C that this front end requires to be present. For example,
the Objective-C++ front end uses source files from the C++ and
Objective-C front ends, so sets @samp{subdir_requires="cp objc"}.
other than C that this front end requires to be present.
@item target_libs
If defined, this variable lists (space-separated) targets in the top
level @file{Makefile} to build the runtime libraries for this
language, such as @code{target-libobjc}.
language.
@item lang_dirs
If defined, this variable lists (space-separated) top level
directories (parallel to @file{gcc}), apart from the runtime libraries,

21
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@ -156,27 +156,6 @@ information concerning the history of C that is available online, see
@c FIXME: details of C++ standard.
@cindex Objective-C
@cindex Objective-C++
There is no formal written standard for Objective-C or Objective-C++@. The most
authoritative manual is ``Object-Oriented Programming and the
Objective-C Language'', available at a number of web sites:
@itemize
@item
@uref{http://developer.apple.com/documentation/Cocoa/Conceptual/ObjectiveC/}
is a recent (and periodically updated) version;
@item
@uref{http://www.toodarkpark.org/computers/objc/}
is an older example;
@item
@uref{http://www.gnustep.org}
and
@uref{http://gcc.gnu.org/readings.html}
have additional useful information.
@end itemize
@cindex treelang
There is no standard for treelang, which is a sample language front end
for GCC@. Its only purpose is as a sample for people wishing to write a

71
contrib/gcc/doc/tm.texi
View File

@ -700,11 +700,11 @@ and possibly @code{unix}; passing @code{_mips} defines @code{__mips},
defines only @code{_ABI64}.
You can also test for the C dialect being compiled. The variable
@code{c_language} is set to one of @code{clk_c}, @code{clk_cplusplus}
or @code{clk_objective_c}. Note that if we are preprocessing
assembler, this variable will be @code{clk_c} but the function-like
macro @code{preprocessing_asm_p()} will return true, so you might want
to check for that first. If you need to check for strict ANSI, the
@code{c_language} is set to one of @code{clk_c} or
@code{clk_cplusplus}. Note that if we are preprocessing assembler,
this variable will be @code{clk_c} but the function-like macro
@code{preprocessing_asm_p()} will return true, so you might want to
check for that first. If you need to check for strict ANSI, the
variable @code{flag_iso} can be used. The function-like macro
@code{preprocessing_trad_p()} can be used to check for traditional
preprocessing.
@ -781,9 +781,8 @@ Don't use this macro to turn on various extra optimizations for
@defmac C_COMMON_OVERRIDE_OPTIONS
This is similar to @code{OVERRIDE_OPTIONS} but is only used in the C
language frontends (C, Objective-C, C++, Objective-C++) and so can be
used to alter option flag variables which only exist in those
frontends.
language frontends (C, C++) and so can be used to alter option flag
variables which only exist in those frontends.
@end defmac
@defmac OPTIMIZATION_OPTIONS (@var{level}, @var{size})
@ -5029,16 +5028,6 @@ number of existing systems lacks support for these functions in the runtime so
they needs this macro to be redefined to 0.
@end defmac
@defmac NEXT_OBJC_RUNTIME
Define this macro to generate code for Objective-C message sending using
the calling convention of the NeXT system. This calling convention
involves passing the object, the selector and the method arguments all
at once to the method-lookup library function.
The default calling convention passes just the object and the selector
to the lookup function, which returns a pointer to the method.
@end defmac
@node Addressing Modes
@section Addressing Modes
@cindex addressing modes
@ -7329,47 +7318,6 @@ Define this macro if the target only supports weak aliases; define
@code{ASM_OUTPUT_DEF} instead if possible.
@end defmac
@defmac OBJC_GEN_METHOD_LABEL (@var{buf}, @var{is_inst}, @var{class_name}, @var{cat_name}, @var{sel_name})
Define this macro to override the default assembler names used for
Objective-C methods.
The default name is a unique method number followed by the name of the
class (e.g.@: @samp{_1_Foo}). For methods in categories, the name of
the category is also included in the assembler name (e.g.@:
@samp{_1_Foo_Bar}).
These names are safe on most systems, but make debugging difficult since
the method's selector is not present in the name. Therefore, particular
systems define other ways of computing names.
@var{buf} is an expression of type @code{char *} which gives you a
buffer in which to store the name; its length is as long as
@var{class_name}, @var{cat_name} and @var{sel_name} put together, plus
50 characters extra.
The argument @var{is_inst} specifies whether the method is an instance
method or a class method; @var{class_name} is the name of the class;
@var{cat_name} is the name of the category (or @code{NULL} if the method is not
in a category); and @var{sel_name} is the name of the selector.
On systems where the assembler can handle quoted names, you can use this
macro to provide more human-readable names.
@end defmac
@defmac ASM_DECLARE_CLASS_REFERENCE (@var{stream}, @var{name})
A C statement (sans semicolon) to output to the stdio stream
@var{stream} commands to declare that the label @var{name} is an
Objective-C class reference. This is only needed for targets whose
linkers have special support for NeXT-style runtimes.
@end defmac
@defmac ASM_DECLARE_UNRESOLVED_REFERENCE (@var{stream}, @var{name})
A C statement (sans semicolon) to output to the stdio stream
@var{stream} commands to declare that the label @var{name} is an
unresolved Objective-C class reference. This is only needed for targets
whose linkers have special support for NeXT-style runtimes.
@end defmac
@node Initialization
@subsection How Initialization Functions Are Handled
@cindex initialization routines
@ -9969,8 +9917,3 @@ This macro determines whether to use the JCR section to register Java
classes. By default, TARGET_USE_JCR_SECTION is defined to 1 if both
SUPPORTS_WEAK and TARGET_HAVE_NAMED_SECTIONS are true, else 0.
@end defmac
@defmac OBJC_JBLEN
This macro determines the size of the objective C jump buffer for the
NeXT runtime. By default, OBJC_JBLEN is defined to an innocuous value.
@end defmac

957
contrib/gcc/objc/ChangeLog
View File

@ -1,957 +0,0 @@
2007-07-19 Release Manager
* GCC 4.2.1 released.
2007-05-13 Release Manager
* GCC 4.2.0 released.
2007-01-23 Andrew Pinski <pinskia@gmail.com>
PR objc/27438
* objc-act.c (objc_add_static_instance): Mark the decl as
TREE_USED.
2007-01-20 Andrew Pinski <pinskia@gmail.com>
PR objc/30479
* objc-act.c (hash_interface): Use IDENTIFIER_HASH_VALUE instead
of htab_hash_pointer.
(lookup_interface): Likewise.
(add_class): Likewise.
2006-10-10 Brooks Moses <bmoses@stanford.edu>
* Make-lang.in: Added empty "objc.pdf" target.
2006-09-26 Andrew Pinski <pinskia@physics.uc.edu>
PR objc/29195
* objc-act.c (objc_push_parm): If we change the type of the
decl, relayout the decl.
2006-09-19 Eric Christopher <echristo@apple.com>
* objc-act.c (JBLEN): Rename to OBJC_JBLEN,
default to something innocuous.
(build_next_objc_exception_stuff): Rename JBLEN.
2006-07-28 Volker Reichelt <reichelt@igpm.rwth-aachen.de>
* Make-lang.in: Use $(HEADER_H) instead of header.h in dependencies.
2006-07-19 Volker Reichelt <reichelt@igpm.rwth-aachen.de>
PR obj-c++/28434
* objc-act.c (lookup_and_install_protocols): Skip error_mark_nodes.
2006-06-06 Mike Stump <mrs@apple.com>
* objc-act.c: Remove prototype for objc_build_volatilized_type.
2006-05-24 Mike Stump <mrs@apple.com>
* objc-act.c (build_next_objc_exception_stuff): Use JBLEN instead of _JBLEN.
2006-05-05 Volker Reichelt <reichelt@igpm.rwth-aachen.de>
PR objc/27240
* objc-act.c (objc_is_public): Return early on invalid type.
2006-03-02 Fariborz Jahanian <fjahanian@apple.com>
* objc-act.c (init_module_descriptor): Remove file name from
module descriptor.
(gen_type_name_0): Fix ICE when issuing warning.
2006-02-20 Rafael Ávila de Espíndola <rafael.espindola@gmail.com>
* Make-lang.in (OBJC): Remove
(OBJECTIVE-C): Remove
(objective-c): Remove
(.PHONY): Remove objective-c and ObjC
2005-12-14 Andrew Pinski <pinskia@physics.uc.edu>
PR objc/25360
* objc/objc-act.c (encode_type): Encode Complex types as 'j' followed
by the inner type.
2005-12-12 Andrew Pinski <pinskia@physics.uc.edu>
PR objc/25348
* objc-act.c (encode_array): Handle arrays to zero sized types.
2005-12-07 Rafael Ávila de Espíndola <rafael.espindola@gmail.com>
* Make-lang.in (objc.all.build, objc.install-normal): Remove.
2005-12-07 Rafael Ávila de Espíndola <rafael.espindola@gmail.com>
* Make-lang.in: Remove all dependencies on s-gtype.
2005-12-02 Richard Guenther <rguenther@suse.de>
* objc-act.c (objc_build_exc_ptr, next_sjlj_build_enter_and_setjmp
next_sjlj_build_exc_extract, next_sjlj_build_catch_list,
next_sjlj_build_try_catch_finally, objc_begin_catch_clause,
build_objc_method_call, objc_rewrite_function_call): Use buildN
instead of build.
2005-10-20 Geoffrey Keating <geoffk@apple.com>
* objc-act.c (synth_module_prologue): Clear TREE_NOTHROW
on objc_msgSend and like builtin functions.
2005-10-17 Andreas Krebbel <krebbel1@de.ibm.com>
* objc-act.c (objc_build_component_ref): Adjust call to
finish_class_member_access_expr due to a changed prototype.
2005-08-31 Andrew Pinski <pinskia@physics.uc.edu>
PR objc/23306
* objc-act.c (generate_strings): Remove and move code to
finish decl to ...
(add_objc_string): here when creating a new string decl.
(finish_objc): Don't call generate_strings.
2005-08-31 Andrew Pinski <pinskia@physics.uc.edu>
PR objc/23381
* objc-act.c (next_sjlj_build_try_catch_finally): Set
TREE_SIDE_EFFECTS on catch_seq after building it.
2005-08-09 Andrew Pinski <pinskia@physics.uc.edu>
part of PR objc/21992
* objc-act.c (handle_class_ref): The ref decl is always referenced.
2005-07-20 Giovanni Bajo <giovannibajo@libero.it>
Make CONSTRUCTOR use VEC to store initializers.
* objc-act.c (objc_build_constructor): Use build_constructor_from_list
instead of build_constructor.
2005-07-08 Daniel Berlin <dberlin@dberlin.org>
* objc-act.c (objc_push_parm): DECL_ARG_TYPE_AS_WRITTEN is
removed.
* objc-act.h (KEYWORD_ARG_NAME): Use decl_non_common.
(KEYWORD_KEY_NAME): Use decl_minimal.
(METHOD_SEL_NAME): Ditto..
(METHOD_SEL_ARGS): Use decl_non_common.
(METHOD_ADD_ARGS): Ditto.
(METHOD_ADD_ARGS_ELLIPSIS_P): Use decl_common.
(METHOD_DEFINITION): Ditto.
(METHOD_ENCODING): Ditto.
* objc-lang.c: (objc_init_ts): New function.
2005-07-07 Ziemowit Laski <zlaski@apple.com>
* objc-act.c (objc_build_struct): Pass in an actual @interface
instead of its name, and annotate the struct created (and all
existing variants thereof) with the @interface.
(objc_compare_types): Treat forward-declared ObjC classes
as stand-alone (root) classes for purposes of type comparisons.
(build_private_template): Move some code to objc_build_struct().
2005-07-07 Ziemowit Laski <zlaski@apple.com>
PR objc/22274
* objc-act.c (objc_build_string_object): For GNU-style constants,
use the @interface type rather than the built-in type.
2005-07-03 Kazu Hirata <kazu@codesourcery.com>
* Make-lang.in (cc1plus-checksum.c): Use
build/genchecksum$(build_exeext), not build/genchecksum$(exeext).
2005-07-02 Joseph S. Myers <joseph@codesourcery.com>
* objc-act.c: Use %q to quote in diagnostics.
2005-07-02 Joseph S. Myers <joseph@codesourcery.com>
* objc-act.c: Use '+' flag instead of %J. Use 'q' flag for
quoting.
2005-06-30 Ziemowit Laski <zlaski@apple.com>
* objc-act.c (objc_build_volatilized_type): New function.
(objc_volatilize_decl): Call objc_build_volatilized_type()
instead of build_qualified_type().
2005-06-29 Ziemowit Laski <zlaski@apple.com>
* objc-act.c (objc_build_internal_const_str_type): New function.
(check_string_class_template): Use objc_get_class_ivars() instead
of TYPE_FIELDS() to retrieve ivar list.
(AT_LEAST_AS_LARGE_AS): Check the size of each field's type rather
than the field itself.
(objc_build_string_object): Synthesize a "__builtin_ObjCString"
type and use it to lay out compile-time string objects.
* objc-act.h (OCTI_INTERNAL_CNST_STR_TYPE, internal_const_str_type):
New.
2005-06-28 Paul Brook <paul@codesourcery.com>
* objc-act.c (objc_init_exceptions): Call
default_init_unwind_resume_libfunc.
2005-06-27 Ziemowit Laski <zlaski@apple.com>
* objc-act.c (objc_build_struct): Save the TYPE_OBJC_INFO
portion of TYPE_LANG_SPECIFIC info for all variants of
a class before calling finish_struct(), and restore
same TYPE_OBJC_INFO afterwards.
2005-06-25 Kelley Cook <kcook@gcc.gnu.org>
* all files: Update FSF address in copyright headers.
2005-06-15 Joseph S. Myers <joseph@codesourcery.com>
* objc-act.c (my_build_string_pointer): New.
(objc_get_class_reference, get_super_receiver): Call
my_build_string_pointer instead of my_build_string when building
function arguments.
2005-05-25 Mike Stump <mrs@mrs.kithrup.com>
* objc-act.c (volatilized_hash): Avoid warnings on 64-bit
machines.
2005-05-24 Ziemowit Laski <zlaski@apple.com>
* objc-act.c (objc_build_struct): New function.
(objc_derived_from_p): Likewise.
(objc_build_component_ref): Likewise.
(objc_copy_binfo): Likewise.
(objc_xref_basetypes): Likewise.
(objc_lookup_protocol): Likewise.
(objc_compare_protocols): Likewise.
(objc_volatilize_decl): Likewise.
(encode_aggregate_fields): Likewise.
(volatilized_hash): Likewise.
(volatilized_eq): Likewise.
(objc_compare_types): Likewise.
(objc_type_quals_match): Likewise.
(DERIVED_FROM_P): New ObjC macro, corresponding to C++ macro
of same name.
(get_class_ivars): Add second parameter indicating if entire
hierarchy is desired.
(struct volatilized_type): New type.
(volatilized_htab): New hash table.
(objc_types_compatible_p, objc_comptypes): Remove functions.
(synth_module_prologue): Do not initialize 'unused_list'.
(objc_get_class_reference): Fix ObjC++ impedance mismatches.
(objc_declare_alias): Implement as a typedef.
(objc_substitute_decl, objc_gimplify_expr): Reformat.
(objc_get_class_ivars): Adjust call to get_class_ivars().
(next_sjlj_build_enter_and_setjmp, synth_forward_declarations,
build_ivar_reference, get_super_receiver): Call
objc_build_component_ref() instead of build_component_ref().
(objc_begin_catch_clause): Use DERIVED_FROM_P() instead of
objc_comptypes().
(build_private_template): Call objc_build_struct() instead of
start_struct() and finish_struct().
(hash_init): Initialize volatilized_htab.
(objc_is_public): Adjust calls to objc_get_ivars(); adjust
ObjC++ impedance mismatches.
(encode_aggregate_within): Streamline by calling
encode_aggregate_fields().
* objc-act.h (objc_types_compatible_p): Remove prototype.
(OCTI_UNUSED_LIST, unused_list): Remove slot.
* objc-lang.c (LANG_HOOKS_TYPES_COMPATIBLE_P): Remove.
2005-05-18 Geoffrey Keating <geoffk@apple.com>
* Make-lang.in (cc1obj-dummy): New.
(cc1obj-checksum.c): New.
(cc1obj-checksum.o): New.
(cc1obj): Add cc1obj-checksum.o.
2005-05-18 Mike Stump <mrs@apple.com>
PR objc/21641
* objc-act.c (struct interface_tuple): Mark it up for GC.
(interface_htab): It is really a struct interface_tuple.
2005-05-17 Ziemowit Laski <zlaski@apple.com>
Mike Stump <mrs@apple.com>
Yet more Objective-C++...
* objc-act.c (objc_finish_try_stmt): Add return value.
(objc_build_synchronized): Likewise.
* objc-act.c (objc_is_gcable_type): Add.
(objc_substitute_decl): Add.
(objc_build_ivar_assignment): Add.
(objc_build_global_assignment): Add.
(objc_build_strong_cast_assignment): Add.
(objc_is_ivar_reference_p): Add.
(objc_is_global_reference_p): Add.
(objc_generate_write_barrier): Add.
(objc_rewrite_function_call): Add.
(objc_gimplify_expr): Add Objective-C++ support.
* objc-act.h (ALLOC_OBJC_TYPE_LANG_SPECIFIC): Likewise.
(SIZEOF_OBJC_TYPE_LANG_SPECIFIC): Add.
(INIT_TYPE_OBJC_INFO): Add Objective-C++ support.
(DUP_TYPE_OBJC_INFO): Likewise.
(struct imp_entry): Add field has_cxx_cdtors.
(struct imp_entry *imp_list): Add OCTI_UMSG_FAST_DECL,
OCTI_METH_LIST_TEMPL, OCTI_METH_PROTO_LIST_TEMPL,
OCTI_IVAR_LIST_TEMPL, OCTI_ASSIGN_IVAR_DECL,
OCTI_ASSIGN_IVAR_FAST_DECL, OCTI_ASSIGN_GLOBAL_DECL,
OCTI_ASSIGN_STRONGCAST_DECL.
(umsg_fast_decl): Add.
(objc_assign_ivar_decl): Add.
(objc_assign_ivar_fast_decl): Add.
(objc_assign_global_decl): Add.
(objc_assign_strong_cast_decl): Add.
(objc_method_list_ptr): Add.
(objc_method_proto_list_ptr): Add.
(objc_ivar_list_ptr): Add.
* objc-act.c (should_call_super_dealloc): Add.
(OBJC_VERSION): Bump to 6.
(objc_is_gcable_type): Add.
(objc_substitute_decl): Add.
(objc_build_ivar_assignment): Add.
(objc_build_global_assignment): Add.
(objc_build_strong_cast_assignment): Add.
(objc_is_gcable_p): Add.
(objc_is_ivar_reference_p): Add.
(objc_is_global_reference_p): Add.
(generate_shared_structures): Add flags parameter.
(objc_generate_cxx_ctor_or_dtor): Add.
(objc_generate_cxx_cdtors): Add.
(add_class): Add name parameter.
(objc_types_share_size_and_alignment): Add.
(comp_proto_with_proto): Add strict parameter.
(CLS_HAS_CXX_STRUCTORS): Add.
(TAG_ASSIGNIVAR): Add.
(TAG_ASSIGNGLOBAL): Add.
(TAG_ASSIGNSTRONGCAST): Add.
(TAG_MSGSEND_FAST): Add.
(TAG_ASSIGNIVAR_FAST): Add.
(TAG_CXX_CONSTRUCT): Add.
(TAG_CXX_DESTRUCT): Add.
(OBJC_LOOKUP_CLASS): Add.
(OBJC_LOOKUP_NO_SUPER): Add.
(objc_finish_file): Add pch support.
(objc_finish_implementation): Add Objective-C++ support.
(synth_module_prologue): Likewise.
(synth_module_prologue): Add fast dispatching.
(objc_get_class_reference): Add Objective-C++ support.
(objc_generate_write_barrier): Likewise.
(next_sjlj_build_enter_and_setjmp): Likewise.
(objc_begin_try_stmt): Likewise.
(build_next_objc_exception_stuff): Add fast ivar support.
(build_private_template): Mark the record as used so debug
information is generated.
(build_protocol_template): Add Objective-C++ support.
(objc_method_parm_type) Likewise.
(objc_generate_cxx_ctor_or_dtor): Likewise.
(objc_generate_cxx_cdtors): Likewise.
(build_protocol_initializer): Likewise.
(build_category_template): Likewise.
(build_class_template): Likewise.
(build_method_list_template): Likewise.
(build_category_initializer): Likewise.
(build_shared_structure_initializer): Likewise.
(objc_finish_message_expr): Likewise.
(build_objc_method_call): Add fast dispatch support.
(lookup_method_static): Add support to end search at superclasses.
(add_method_to_hash_list): Add strict parameter to
comp_proto_with_proto.
(objc_add_method): Likewise.
(objc_add_method): Also set the interface_value.
(add_instance_variable): Add Objective-C++ support.
(objc_is_public): Likewise.
(start_class): Likewise.
(continue_class): Likewise.
(encode_aggregate_within): Likewise.
(start_method_def): Likewise.
(objc_start_function): Clear current_function_returns_value
and current_function_returns_null.
(really_start_method): Add Objective-C++ support.
(objc_finish_method_definition): Add warning for missing
[super dealloc].
(finish_objc): Add Objective-C++ support.
(generate_objc_image_info): Likewise.
(objc_lookup_ivar): Likewise.
* objc-act.h (TYPE_HAS_OBJC_INFO): Likewise.
(INIT_TYPE_OBJC_INFO): Likewise.
(DUP_TYPE_OBJC_INFO): Likewise.
2005-04-23 DJ Delorie <dj@redhat.com>
* objc-act.c: Adjust warning() callers.
2005-04-21 Roger Sayle <roger@eyesopen.com>
* objc-act.h (METHOD_ADD_ARGS_ELLIPSIS_P): New macro for accessing
this field of an objc method decl.
* objc-act.c (build_method_decl): Take an additional "ellipsis"
argument, and set METHOD_ADD_ARGS_ELLIPSIS_P as appropriate.
(objc_build_method_signature): Accept additional "ellipsis"
argument and pass it to build_method_decl.
(get_arg_type_list, start_method_def, gen_method_decl): Use
the new METHOD_ADD_ARGS_ELLIPSIS_P instead of examining the
TREE_OVERFLOW field of a TREE_LIST node.
2005-04-20 Joseph S. Myers <joseph@codesourcery.com>
PR c/12913
* objc-act.c (objc_start_function): Create stack level for context
of identifiers with variably modified type.
2005-03-30 Joseph S. Myers <joseph@codesourcery.com>
PR c/772
PR c/17913
* objc-act.c (objc_start_function): Push context on
label_context_stack.
2005-03-23 Joseph S. Myers <joseph@codesourcery.com>
* objc-act.c (next_sjlj_build_enter_and_setjmp,
next_sjlj_build_catch_list, next_sjlj_build_try_catch_finally):
Call c_common_truthvalue_conversion.
2005-02-25 Joseph S. Myers <joseph@codesourcery.com>
* Make-lang.in (objc/objc-parse.o-warn, objc/objc-parse.o,
objc/objc-parse.c, objc/objc-parse.y): Remove
(OBJC_OBJS, objc.srcextra, objc.tags, objc.mostlyclean,
objc.distclean, objc.maintainer-clean): Update for new parser.
* config-lang.in (gtfiles): Update for new parser.
2005-01-29 Kazu Hirata <kazu@cs.umass.edu>
* lang-specs.h, objc-act.c, objc-act.h, objc-lang.c: Update
copyright.
2005-01-27 Matt Austern <austern@apple.com>
* objc-act.c (objc_finish_file): In ObjC++ mode, set at_eof before
calling instantiate_pending_templates.
2005-01-26 Alexander Malmberg <alexander@malmberg.org>
PR objc/18862
* objc-act.c (build_selector_translation_table): Use
input_location in the diagnostic for the GNU runtime or if
TREE_PURPOSE (chain) is NULL.
2005-01-25 Alexander Malmberg <alexander@malmberg.org>
PR objc/18408
* objc-act.c (objc_types_compatible_p): New function.
* objc-act.h (objc_types_compatible_p): Declare.
* objc-lang.c (LANG_HOOKS_TYPES_COMPATIBLE_P): Define.
2005-01-16 Ziemowit Laski <zlaski@apple.com>
* objc-act.c (objc_push_parm): Call c_type_promotes_to()
via a lang-hook.
2005-01-15 Ziemowit Laski <zlaski@apple.com>
PR objc/19321
* objc-act.c (get_arg_type_list): Decay function arguments into
pointers.
(objc_push_parm): Likewise; bring PARM_DECL construction closer
in line with what the C front-end does.
(objc_get_parm_info): Call pushdecl() and finish_decl() on
each PARM_DECL, like the C front-end does.
(start_method_def): Remove redundant ARRAY_TYPE decay.
(objc_start_function): Bring closer in line with what the
C front-end does for functions.
2005-01-14 Mike Stump <mrs@apple.com>
* lang-specs.h ("@objective-c"): Use cc1obj when -E is used so
that -fobjc-exceptions is accepted.
2004-12-30 Ziemowit Laski <zlaski@apple.com>
PR objc/18971
* objc-act.c (get_arg_type_list, start_method_def): Decay
array arguments into pointers.
(gen_type_name_0): Learn to pretty-print array types.
2004-12-15 Ziemowit Laski <zlaski@apple.com>
* objc-act.c (build_private_template): Change to return 'void'; do
not set ivar_context, uprivate_record or objc_instance_type.
(objc_comptypes, gen_type_name_0): For types 'id' and 'Class',
retrieve protocol list from the pointee rather than the pointer itself;
check TYPE_HAS_OBJC_INFO(...) precondition before accessing
TYPE_OBJC_PROTOCOL_LIST.
(objc_get_protocol_qualified_type): For types 'id' and 'Class',
construct a variant of the pointee as well as the pointer, and
store protocol information in the former. When creating variants
of RECORD_TYPEs, clone their TYPE_LANG_SPECIFIC fields and propagate
TYPE_OBJC_INTERFACE information.
(objc_declare_class): If a TYPE_DECL is looked up, retrieve the
underlying RECORD_TYPE to check for presence of TYPE_OBJC_INTERFACE;
for newly-created RECORD_TYPEs, create a tentative TYPE_OBJC_INTERFACE
holding an IDENTIFIER_NODE.
(objc_finish_message_expr): Check TYPE_HAS_OBJC_INFO(...) before
accessing TYPE_OBJC_PROTOCOL_LIST; Use TYPE_OBJC_INTERFACE instead
of calling lookup_interface(); allow for TYPE_OBJC_INTERFACE holding
an IDENTIFIER_NODE (meaning a @class forward-declaration only).
(objc_is_public): Check TYPE_OBJC_INTERFACE instead of calling
lookup_interface().
(continue_class): For @implementations, set ivar_context,
uprivate_record and objc_instance_type, for @interfaces, call
build_private_template().
(encode_pointer): Check TYPE_HAS_OBJC_INFO(...) before accessing
TYPE_OBJC_INTERFACE.
(objc_types_are_equivalent): Check TYPE_HAS_OBJC_INFO(...) before
accessing TYPE_OBJC_PROTOCOL_LIST.
* objc-act.h (OBJC_INFO_SLOT_ELTS, TYPE_OBJC_INFO, INIT_TYPE_OBJC_INFO,
DUP_TYPE_OBJC_INFO, ALLOC_OBJC_TYPE_LANG_SPECIFIC,
SIZEOF_OBJC_TYPE_LANG_SPECIFIC): New macros.
(TYPE_OBJC_INTERFACE): Replaces TREE_STATIC_INSTANCE and now points
to an actual @interface; stored in TYPE_LANG_SPECIFIC(...).
(TYPE_OBJC_PROTOCOL_LIST): Replaces TYPE_PROTOCOL_LIST; stored in
TYPE_LANG_SPECIFIC(...).
(TREE_STATIC_INSTANCE, TYPE_PROTOCOL_LIST): Delete.
(IS_ID, IS_CLASS, IS_PROTOCOL_QUALIFIED_UNTYPED, IS_SUPER,
TYPED_OBJECT): Check for POINTER_TYPE rather than POINTER_TYPE_P;
adjust for use of TYPE_OBJC_INTERFACE and TYPE_OBJC_PROTOCOL_LIST
instead of TREE_STATIC_INSTANCE and TYPE_PROTOCOL_LIST.
2004-11-29 Joseph Myers <joseph@codesourcery.com>
PR c/7544
* Make-lang.in (objc/objc-act.o): Update dependencies.
* objc-act.c (objc_finish_file): Call
maybe_apply_pending_pragma_weaks if not OBJCPLUS.
2004-11-09 Andrew Pinski <pinskia@physics.uc.edu>
PR objc/18406
* obj-act.c (encode_type): 96bits doubles are encoded the
same way as 64bit and 128bit doubles are.
2004-11-09 Joseph S. Myers <joseph@codesourcery.com>
* objc-act.c: Use %q, %< and %> for quoting in diagnostics.
2004-11-08 Andrew Pinski <pinskia@physics.uc.edu>
PR objc/16546
* objc-act.c (generate_method_descriptors): Remove setting
the new decls' type to variable_length_type.
(generate_ivar_lists): Likewise.
(generate_dispatch_tables): Likewise.
2004-10-30 Ziemowit Laski <zlaski@apple.com>
* objc-act.c (objc_lookup_ivar): The new OTHER parameter
contains the result of the ID lookup by the C or C++
front-end; in class methods, use OTHER if it exists;
in instance methods, use OTHER only if it is locally
declared.
2004-10-26 Ziemowit Laski <zlaski@apple.com>
* objc-act.c (finish_class): Do not synthesize bogus
'extern objc_object *_Foo;' declarations for @interface Foo.
2004-10-25 Ziemowit Laski <zlaski@apple.com>
David Ayers <d.ayers@inode.at>
* objc-act.c (objc_comptypes): Use IS_PROTOCOL_QUALIFIED_UNTYPED
instead of IS_PROTOCOL_QUALIFIED_ID; add comparisons for:
'Class <Protocol> != id <Protocol>'; 'Class <Protocol> != <class> *';
'Class <Protocol> == id' and 'Class <Protocol> == Class'.
(objc_is_id): Add test for 'super'.
(objc_finish_message_expr): Allow for messaging of 'Class <Proto>'
receivers; if class methods are not found in protocol lists, search
for instance methods therein and warn if one is found. Look in
global hash tables for suitable method as a last resort when messaging
'id <Proto>', 'Class <Proto>' and invalid receiver types.
(objc_add_method): Insert instance methods listed in protocols into
the global class method hash table.
* objc-act.h (IS_PROTOCOL_QUALIFIED_ID): Rename to
IS_PROTOCOL_QUALIFIED_UNTYPED and allow for 'Class <Proto>' in
addition to 'id <Proto>'.
2004-10-21 Andrew Pinski <pinskia@physics.uc.edu>
PR objc/17923
* objc-act.c (objc_build_string_object): Create a CONST_DECL
for the NeXT runtime case.
2004-10-02 Kazu Hirata <kazu@cs.umass.edu>
* objc-act.c: Fix comment typos.
2004-09-24 Ziemowit Laski <zlaski@apple.com>
* objc-act.c (init_objc_symtab, init_module_descriptor,
build_shared_structure_initializer): When initializing 'long'
fields, ensure that the initializer value is also 'long'.
2004-09-24 Zack Weinberg <zack@codesourcery.com>
* objc-act.c: Change annotate_with_locus to SET_EXPR_LOCATION
throughout.
(objc_init): Only set input_line to 0 #ifndef USE_MAPPED_LOCATION.
(build_selector_translation_table): Use %J in diagnostic
instead of diddling input_line. Fix spelling.
2004-09-21 Ziemowit Laski <zlaski@apple.com>
* objc-act.c (objc_fold_objc_type_ref): New function.
* objc-act.h (objc_fold_objc_type_ref): New prototype.
2004-09-09 Joseph S. Myers <jsm@polyomino.org.uk>
* objc-act.c (objc_start_function, really_start_method,
objc_get_parm_info, start_method_def): Update to new arg_info
structures.
2004-09-07 Ziemowit Laski <zlaski@apple.com>
* Make-lang.in (objc/objc-parse.o): Depend on $(C_COMMON_H) instead of
objc/objc-act.h.
(objc/objc-act.o): Depend on $(HASHTAB_H).
* objc-act.c: Include hashtab.h; in ObjC++ mode, include cp-tree.h and
objcp-decl.h instead of c-tree.h.
(build_module_descriptor, get_class_ivars, synth_id_with_class_suffix,
error_with_ivar, gen_method_decl, gen_declaration, setup_string_decl,
build_protocol_template): Adjust prototypes.
(build_module_initializer_routine, start_class, continue_class,
finish_class, start_method_def, objc_start_function, start_protocol,
build_method_decl, objc_add_method, add_instance_variable,
build_ivar_reference, is_ivar, is_private, get_super_receiver,
build_selector_table_decl, objc_push_parm, objc_get_parm_info,
gen_type_name, gen_type_name_0, start_var_decl, finish_var_decl,
create_field_decl): New prototypes.
(objc_expand_function_end, comp_method_with_proto, objc_expr_last,
gen_declaration_1, gen_declarator, is_complex_decl, adorn_decl,
define_decl, create_builtin_decl, gen_declspecs): Remove prototypes.
(TYPE_ID): Rename to OBJECT_TYPEDEF_NAME.
(CLASS_TYPEDEF_NAME): New.
(TAG_EXECCLASS): Change from a global variable to a #define.
(TAG_RETURN_STRUCT): Delete.
(TAG_GNUINIT): New, holds '__objc_gnu_init' name.
(objc_inherit_code, objc_public_flag): New, moved from c-parse.in.
(string_descriptor): New struct.
(string_htab): New hash table.
(string_hash, string_eq): New prototypes.
(generate_struct_by_value_array): Call create_field_decl() instead of
create_builtin_decl().
(objc_init): Do not initialize objc_ellipsis_node or TAG_EXECCLASS;
In ObjC++ mode, call cxx_init() instead of c_objc_common_init().
(objc_finish_file): In ObjC++, call instantiate_pending_templates()
and cp_finish_file().
(define_decl, get_static_reference, get_protocol_reference,
create_builtin_decl): Remove functions.
(objc_start_class_interface, objc_start_category_interface,
objc_start_protocol, objc_continue_interface, objc_finish_interface,
objc_start_class_implementation, objc_start_category_implementation,
objc_continue_implementation, objc_finish_implementation,
objc_set_visibility, objc_set_method_type,
objc_build_method_signature, objc_add_method_declaration,
objc_start_method_definition, objc_add_instance_variable,
objc_get_protocol_qualified_type, create_field_decl,
start_var_decl, finish_var_decl): New functions.
(setup_string_decl): Simplify since it is only called once.
(synth_module_prologue): Call build_class_template(); predefine 'id'
and 'Class' as typedefs; rename 'temp_type' to 'type'; disable debug
hooks for duration of function; fix GNU runtime messenger signatures
to correspond to reality; forward-declare '__objc_exec_class' for the
GNU runtime; call build_selector_table_decl(); in ObjC++ mode, generate
'extern "C" { ... }' wrappers around synthesized declarations; call
build_protocol_template() and build_category_template().
(string_hash, string_eq): New functions.
(objc_build_string_object): Check metaclass correctness only once;
store string literals in hash table.
(objc_build_constructor): Do not convert initializer elements;
adjust for ObjC++ impedance mismatch.
(build_objc_symtab_template): Call create_field_decl() instead of
create_builtin_decl().
(init_objc_symtab): Add missing conversion to initializer element.
(build_metadata_decl): Call start_var_decl() instead of define_decl().
(generate_objc_symtab_decl): Do not call build_category_template();
call start_var_decl() and finish_var_decl() instead of start_decl()
and finish_decl().
(build_module_descriptor): Call create_field_decl() instead of
grokfield(); call start_var_decl() and finish_var_decl() instead of
start_decl() and finish_decl(); always mark module descriptor as
used; move GNU runtime-specific functionality to
build_module_initializer_routine().
(build_module_initializer_routine): New function, broken off of
build_module_descriptor().
(objc_static_init_needed_p, objc_generate_static_init_call): New
functions.
(generate_static_references, generate_strings,
build_selector_translation_table, generate_descriptor_table,
generate_ivars_list, generate_dispatch_table, generate_category): Call
start_var_decl() and finish_var_decl() instead of start_decl() and
finish_decl(); build a type directly instead of via groktypename().
(build_selector_reference_decl, build_selector_table_decl,
build_class_reference_decl, build_protocol_reference,
generate_objc_image_info): Call start_var_decl() instead of
build_decl().
(build_selector_reference): For GNU runtime, do not call
build_selector_reference_decl().
(build_selector, build_typed_selector_reference): Always convert
result to the selector type.
(add_objc_string): Cast return value to 'char *'.
(build_method_prototype_template, build_selector_template,
build_method_template): Use actual selector type for fields
pointing to selectors.
(finish_objc): For GNU runtime, call
build_module_initializer_routine() after build_module_descriptor().
(generate_protocol_list, generate_shared_structures): Call
start_var_decl() and finish_var_decl() instead of start_decl() and
finish_decl(); build a type directly instead of via
groktypename().
(synth_id_with_class_suffix): Return a string.
(get_arg_type_list): For instance methods, use the instance type for
'self'; do not call groktypename_in_parm_context().
(build_objc_string_decl): Squash redeclaration errors in ObjC++.
(objc_is_class_name): Use OBJC_TYPE_NAME instead of TYPE_NAME;
handle RECORD_TYPEs in ObjC as well as ObjC++.
(objc_is_id): New function.
(objc_is_object_ptr): Return the canonical type node.
(objc_get_class_ivars): Simplify using get_class_ivars().
(get_class_ivars): Remove second parameter; create a fresh copy
of the ivar list for each call; do not check for existence of
super class.
(objc_eh_runtime_type): Mark #ifndef OBJCPLUS.
(objc_init_exceptions): When using SJLJ-style exceptions, require
the use of '-fobjc-exceptions' flag; do not require it for DWARF-style
exceptions.
(objc_build_exc_ptr, next_sjlj_build_try_catch_finally): Use
objc_object_type instead of objc_id_type.
(objc_begin_catch_clause): Convert the incoming PARM_DECL into
a VAR_DECL before placing it in the appropriate scope; do not
call define_decl(); adjust call to c_begin_compound_stmt();
use objc_object_type instead of objc_id_type.
(build_next_objc_exception_stuff): Call create_field_decl() instead
of create_builtin_decl(); construct type directly instead of calling
groktypename(); use OBJC_VOID_AT_END to mark end of function parameters.
(build_private_template): Adjust call to get_class_ivars(); build
a type directly instead of via groktypename().
(build_protocol_template, build_method_prototype_list_template,
build_method_prototype_template, build_category_template,
build_selector_template, build_class_template, build_super_template,
build_ivar_template, build_ivar_list_template,
build_method_list_template, build_method_template):
Call create_field_decl() instead of grokfield().
(objc_method_parm_type): Do not call groktypename().
(generate_descriptor_table): Call start_var_decl() and
finish_var_decl() instead of start_decl() and finish_decl().
(generate_method_descriptors, build_protocol_initializer,
generate_dispatch_tables, build_category_initializer,
build_shared_structure_initializer): Do not call groktypename().
(generate_protocols): Call start_var_decl() and finish_var_decl()
instead of start_decl() and finish_decl(); do not call groktypename().
(error_with_ivar): Remove last parameter.
(check_ivars): Do not iterate ovar CLASS_RAW_IVARS lists in addition
to CLASS_IVARS lists; adjust calls to error_with_ivar().
(generate_ivar_lists): Convert one of the initializer elements; do
not call groktypename().
(get_arg_type_list, start_method_def, gen_method_def): Account for
new representation of variable arguments and '...' in Objective-C
methods; add Objective-C++ impedance matching code.
(is_objc_type_qualifier): Remove function.
(adjust_type_for_id_default): Simplify; there is no longer a need to
wade through declspecs.
(lookup_interface, start_class, continue_class,
finish_class, start_method_def, start_protocol, build_method_decl,
objc_add_method, add_instance_variable, build_ivar_reference,
is_ivar, is_private, get_super_receiver, objc_build_finally_epilogue):
Make into static functions.
(receiver_is_class_object): Use new IS_CLASS() macro.
(objc_build_message_expr): Tweak ObjC++ message argument handling;
call objc_finish_message_expr() instead of finish_message_expr().
(finish_message_expr): Rename to objc_finish_message_expr(); use
OBJC_TYPE_NAME and OBJC_SET_TYPE_NAME macros instead of TYPE_NAME.
call gen_type_name() instead of gen_declaration(); call objc_is_id()
instead of using IS_ID and IS_CLASS; Use objc_class_name instead of
calling get_identifier("Class"); handle CONVERT_EXPRs in receiver.
(build_objc_method_call, warn_with_method): Do not call groktypename().
(build_ivar_reference): Call convert() instead of clobbering in a
type.
(hash_init): Initialize string_htab hash table.
(add_instance_variable): Simplify parameter list; do not call grokfield();
do not populate CLASS_IVARS list.
(start_class): Check for the existence of super class, if one was specified.
(continue_class): Use CLASS_RAW_IVARS rather than CLASS_IVARS; do not
call build_class_template(); adjust call to get_class_ivars(); call
build_decl(), pushdecl() and finish_decl() instead of define_decl().
(finish_class): Call build_decl(), pushdecl() and finish_decl() instead
of define_decl().
(add_protocols): Use PROTOCOL_BINFO_ELTS for the tree vector size.
(start_protocol): Do not call build_protocol_template(); use
PROTOCOL_BINFO_ELTS for the tree vector size.
(encode_type_qualifiers): Do not handle the 'const' qualifier here.
(encode_pointer): Encode 'const char *' as 'r*', for backwards
compatibility.
(encode_array): Use HOST_WIDE_INT_PRINT_DEC instead of "%ld".
(encode_type): Handle the 'const' qualifier here.
(objc_parmlist): New global variable, sued by objc_push_parm and
objc_get_parm_info().
(objc_push_parm, objc_get_parm_info): New functions.
(objc_expr_last): Remove function.
(synth_self_and_ucmd_args): For instance methods, use the instance
type for 'self'; call objc_push_parm() instead of push_parm_decl().
(start_method_def): Do not call push_scope(), declare_parm_level(),
pop_scope(), push_parm_decl(), store_parm_decls() or objc_expr_last();
just use objc_push_parm() and objc_get_parm_info().
(comp_method_with_proto): Remove function.
(objc_types_are_equivalent): Strip away indirections before comparing
underlying types.
(comp_proto_with_proto): Do not call groktypename(); types are no
longer in raw declspec format.
(objc_start_function): New function.
(really_start_method): Call comp_proto_with_proto() instead of
comp_method_with_proto(); call objc_start_function() instead of
hand-crafting a function declarator.
(continue_method_def, objc_expand_function_end): Remove functions.
(get_super_receiver): Call objc_get_current_scope() instead of
get_current_scope(); reference 'super_class' field (instead of
'class').
(finish_method_def): Rename to objc_finish_method_definition() and
add a function decl parameter; move method encoding call from
objc_expand_function_end().
(is_complex_decl, adorn_decl, gen_declarator, gen_declspecs,
gen_declaration_1): Remove functions.
(tmpbuf, RAW_DECLSPEC): Remove.
(gen_declaration): Remove second parameter; simplify to deal
with TYPE_P nodes instead of raw declspecs.
(gen_type_name, gen_type_name_0): New functions.
(gen_method_decl): Remove second parameter; call gen_type_name()
instead of gen_declaration_1().
(dump_interface): Adjust calls to gen_declaration() and
gen_method_decl(); do not allocate a separate string buffer.
(init_objc): Allocate a larger string buffer to accommodate
dump_interface(); adjust call to build_module_descriptor();
add call to build_module_initializer_routine() for the GNU
runtime.
(generate_classref_translation_entry): Do not call start_decl(); call
finish_var_decl() instead of finish_decl(); call convert() instead of
build_c_cast().
* objc-act.h (CLASS_OWN_IVARS): Remove accessor.
(CLASS_BINFO_ELTS): Reduce from 6 to 5, now that CLASS_OWN_IVARS is
gone.
(OCTI_GNU_INIT_DECL, GNU_INIT_decl): New.
(OCTI_ELLIPSIS_NODE, objc_ellipsis_node): Remove.
(OCTI_ID_ID, id_type, objc_id_id): Rename to OCTI_ID_NAME,
objc_object_type and objc_object_name, respectively.
(OCTI_CLS_REF, OCTI_CLASS_NAME, objc_class_reference,
objc_class_name): New.
(IS_CLASS): New macro.
(IS_ID, IS_SUPER): Robustify.
(OCTI_EXECCLASS_DECL, execclass_decl): New.
(finish_file, start_class, continue_class, finish_class,
start_method_def, continue_method_def, finish_method_def,
start_protocol, finish_protocol, objc_build_throw_stmt,
objc_build_try_catch_finally_stmt, objc_build_synchronized_prologue,
objc_build_synchronized_epilogue, objc_build_try_prologue,
objc_build_try_epilogue, objc_build_catch_stmt, objc_build_catch_epilogue,
objc_build_finally_prologue, objc_build_finally_epilogue,
is_ivar, is_private, is_public, add_instance_variable, objc_add_method,
get_super_receiver, objc_clear_super_receiver, get_class_ivars_from_name,
get_class_reference, get_static_reference, get_object_reference,
build_message_expr, finish_message_expr, build_selector_expr,
build_ivar_reference, build_keyword_decl, build_method_decl,
build_protocol_expr, build_objc_string_object, objc_declare_alias,
objc_declare_class, objc_declare_protocols, objc_comptypes,
objc_check_decl, build_encode_expr): Remove prototypes.
(imp_count, cat_count): Make GGC-aware.
(OBJC_SET_TYPE_NAME): New macro.
2004-09-03 Ziemowit Laski <zlaski@apple.com>
* config-lang.in: Update copyright notice.
(lang_requires): Indicate that ObjC requires C to be built first.
2004-09-01 Ziemowit Laski <zlaski@apple.com>
* objc-act.c (objc_check_decl): Use OBJC_TYPE_NAME macro instead of
TYPE_NAME.
(build_objc_string_object): Rename to objc_build_string_object().
(get_class_reference): Rename to objc_get_class_reference().
(get_class_ivars_from_name): Rename to objc_get_class_ivars().
(next_sjlj_build_catch_list, get_super_receiver): Call
objc_get_class_reference() instead of get_class_reference().
(build_keyword_decl): Rename to objc_build_keyword_decl().
(build_message_expr): Rename to objc_build_message_expr().
(build_protocol_expr): Rename to objc_build_protocol_expr().
(build_selector_expr): Rename to objc_build_selector_expr().
(build_encode_expr): Rename to objc_build_encode_expr().
* objc-act.h (get_class_ivars_from_name): Rename prototype to
objc_get_class_ivars().
(get_class_reference): Rename prototype to objc_get_class_reference().
(build_message_expr): Rename prototype to objc_build_message_expr().
(build_selector_expr): Rename prototype to objc_build_selector_expr().
(build_keyword_decl): Rename prototype to objc_build_keyword_decl().
(build_protocol_expr): Rename prototype to objc_build_prototype_expr().
(build_objc_string_object): Rename prototype to
objc_build_string_object().
2004-09-01 Ziemowit Laski <zlaski@apple.com>
* objc-act.c (lookup_interface): Make function 'static' and add a
local prototype.
(objc_check_decl, get_class_reference, objc_declare_alias,
objc_declare_class, objc_is_object_ptr): Call objc_is_class_name()
instead of is_class_name().
(get_super_receiver, objc_clear_super_receiver): Call
objc_get_current_scope() instead of get_current_scope().
(is_class_name): Rename to objc_is_class_name.
(lookup_objc_ivar): Rename to objc_lookup_ivar.
2004-08-28 Ziemowit Laski <zlaski@apple.com>
* objc-act.c (objc_is_reserved_word): New function.
2004-08-15 Ziemowit Laski <zlaski@apple.com>
* Make-lang.in (objc/objc-lang.o): Depend on $(C_PRETTY_PRINT_H),
$(DIAGNOSTIC_H), c-objc-common.h and gtype-objc.h, but not on toplev.h.
(objc/objc-parse.o): Do not depend on gtype-objc.h.
* objc-act.c: Do not include gtype-objc.h.
(finish_file): Rename to objc_finish_file().
* objc-act.h (finish_file): Update copyright notice; remove prototype.
* objc-lang.c: Update copyright notice; include diagnostic.h,
c-objc-common.h, c-pretty-print.h and gtype-objc.h; do not include
toplev.h.
(finish_file): New hook routine.
(LANG_HOOKS_FINISH, LANG_HOOKS_INIT_OPTIONS,
LANG_HOOKS_INITIALIZE_DIAGNOSTICS, LANG_HOOKS_HANDLE_OPTION,
LANG_HOOKS_MISSING_ARGUMENT, LANG_HOOKS_POST_OPTIONS,
LANG_HOOKS_GET_ALIAS_SET, LANG_HOOKS_SAFE_FROM_P,
LANG_HOOKS_EXPAND_EXPR, LANG_HOOKS_MARK_ADDRESSABLE,
LANG_HOOKS_PARSE_FILE, LANG_HOOKS_TRUTHVALUE_CONVERSION,
LANG_HOOKS_FINISH_INCOMPLETE_DECL, LANG_HOOKS_UNSAFE_FOR_REEVAL,
LANG_HOOKS_STATICP, LANG_HOOKS_SET_DECL_ASSEMBLER_NAME,
LANG_HOOKS_NO_BODY_BLOCKS, LANG_HOOKS_WARN_UNUSED_GLOBAL_DECL,
LANG_HOOKS_PRINT_IDENTIFIER, LANG_HOOKS_FUNCTION_ENTER_NESTED,
LANG_HOOKS_FUNCTION_LEAVE_NESTED, LANG_HOOKS_DUP_LANG_SPECIFIC_DECL,
LANG_HOOKS_DECL_UNINIT, LANG_HOOKS_RTL_EXPAND_STMT,
LANG_HOOKS_COMMON_ATTRIBUTE_TABLE, LANG_HOOKS_FORMAT_ATTRIBUTE_TABLE,
LANG_HOOKS_TREE_INLINING_CANNOT_INLINE_TREE_FN,
LANG_HOOKS_TREE_INLINING_DISREGARD_INLINE_LIMITS,
LANG_HOOKS_TREE_INLINING_ANON_AGGR_TYPE_P,
LANG_HOOKS_TREE_INLINING_CONVERT_PARM_FOR_INLINING,
LANG_HOOKS_TREE_INLINING_ESTIMATE_NUM_INSNS,
LANG_HOOKS_TREE_DUMP_DUMP_TREE_FN,
LANG_HOOKS_CALLGRAPH_EXPAND_FUNCTION, LANG_HOOKS_TYPE_FOR_MODE,
LANG_HOOKS_TYPE_FOR_SIZE, LANG_HOOKS_SIGNED_TYPE,
LANG_HOOKS_UNSIGNED_TYPE, LANG_HOOKS_SIGNED_OR_UNSIGNED_TYPE,
LANG_HOOKS_INCOMPLETE_TYPE_ERROR, LANG_HOOKS_TYPE_PROMOTES_TO,
LANG_HOOKS_REGISTER_BUILTIN_TYPE, LANG_HOOKS_WRITE_GLOBALS):
Move to c-objc-common.h.

142
contrib/gcc/objc/Make-lang.in
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@ -1,142 +0,0 @@
# Top level -*- makefile -*- fragment for GNU Objective-C
# Copyright (C) 1997, 1998, 2000, 2001, 2002, 2003, 2004, 2005
# Free Software Foundation, Inc.
#This file is part of GCC.
#GCC is free software; you can redistribute it and/or modify
#it under the terms of the GNU General Public License as published by
#the Free Software Foundation; either version 2, or (at your option)
#any later version.
#GCC is distributed in the hope that it will be useful,
#but WITHOUT ANY WARRANTY; without even the implied warranty of
#MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
#GNU General Public License for more details.
#You should have received a copy of the GNU General Public License
#along with GCC; see the file COPYING. If not, write to
#the Free Software Foundation, 51 Franklin Street, Fifth Floor,
#Boston, MA 02110-1301, USA.
# This file provides the language dependent support in the main Makefile.
# Each language makefile fragment must provide the following targets:
#
# foo.all.cross, foo.start.encap, foo.rest.encap,
# foo.install-common, foo.install-man, foo.install-info, foo.dvi, foo.pdf
# foo.uninstall,
# foo.mostlyclean, foo.clean, foo.distclean,
# foo.maintainer-clean, foo.stage1, foo.stage2, foo.stage3, foo.stage4
#
# where `foo' is the name of the language.
#
# It should also provide rules for:
#
# - making any compiler driver (eg: g++)
# - the compiler proper (eg: cc1plus)
# - define the names for selecting the language in LANGUAGES.
#
# Define the names for selecting Objective-C in LANGUAGES.
objc: cc1obj$(exeext)
# Tell GNU make to ignore these if they exist.
.PHONY: objc
# Use maximal warnings for this front end.
objc-warn = $(STRICT_WARN)
# Language-specific object files for Objective C.
OBJC_OBJS = objc/objc-lang.o objc/objc-act.o
cc1obj-dummy$(exeext): $(OBJC_OBJS) $(C_AND_OBJC_OBJS) dummy-checksum.o $(BACKEND) $(LIBDEPS)
$(CC) $(ALL_CFLAGS) $(LDFLAGS) -o $@ \
$(OBJC_OBJS) $(C_AND_OBJC_OBJS) dummy-checksum.o \
$(BACKEND) $(LIBS)
cc1obj-checksum.c : cc1obj-dummy$(exeext) build/genchecksum$(build_exeext)
build/genchecksum$(build_exeext) cc1obj-dummy$(exeext) > $@
cc1obj-checksum.o : cc1obj-checksum.c
cc1obj$(exeext): $(OBJC_OBJS) $(C_AND_OBJC_OBJS) cc1obj-checksum.o $(BACKEND) $(LIBDEPS)
$(CC) $(ALL_CFLAGS) $(LDFLAGS) -o $@ \
$(OBJC_OBJS) $(C_AND_OBJC_OBJS) cc1obj-checksum.o \
$(BACKEND) $(LIBS)
# Objective C language specific files.
objc/objc-lang.o : objc/objc-lang.c \
$(CONFIG_H) $(SYSTEM_H) coretypes.h $(TM_H) $(TREE_H) \
$(C_TREE_H) $(DIAGNOSTIC_H) \
$(GGC_H) langhooks.h $(LANGHOOKS_DEF_H) $(C_COMMON_H) gtype-objc.h \
c-objc-common.h objc/objc-act.h $(TREE_GIMPLE_H)
objc/objc-act.o : objc/objc-act.c \
$(CONFIG_H) $(SYSTEM_H) coretypes.h $(TM_H) $(TREE_H) $(RTL_H) $(TM_P_H) \
$(EXPR_H) $(TARGET_H) $(C_TREE_H) $(DIAGNOSTIC_H) toplev.h $(FLAGS_H) \
objc/objc-act.h input.h $(FUNCTION_H) output.h debug.h langhooks.h \
$(LANGHOOKS_DEF_H) $(HASHTAB_H) $(C_PRAGMA_H) gt-objc-objc-act.h \
$(TREE_GIMPLE_H)
objc.srcextra:
#
# Build hooks:
objc.all.cross:
objc.start.encap:
objc.rest.encap:
objc.info:
objc.install-info:
objc.dvi:
objc.pdf:
objc.html:
objc.man:
objc.srcinfo:
objc.srcman:
objc.tags: force
cd $(srcdir)/objc; etags -o TAGS.sub *.c *.h; \
etags --include TAGS.sub --include ../TAGS.sub
lang_checks += check-objc
#
# Install hooks:
# cc1obj is installed elsewhere as part of $(COMPILERS).
objc.install-common:
objc.install-man:
objc.uninstall:
#
# Clean hooks:
# A lot of the ancillary files are deleted by the main makefile.
# We just have to delete files specific to us.
objc.mostlyclean:
-rm -f objc/*$(objext) objc/xforward objc/fflags
-rm -f objc/*$(coverageexts)
objc.clean: objc.mostlyclean
-rm -rf objc-headers
objc.distclean:
-rm -f objc/Makefile objc/Make-host objc/Make-target
-rm -f objc/config.status objc/config.cache
objc.maintainer-clean:
#
# Stage hooks:
objc.stage1: stage1-start
-mv objc/*$(objext) stage1/objc
objc.stage2: stage2-start
-mv objc/*$(objext) stage2/objc
objc.stage3: stage3-start
-mv objc/*$(objext) stage3/objc
objc.stage4: stage4-start
-mv objc/*$(objext) stage4/objc
objc.stageprofile: stageprofile-start
-mv objc/*$(objext) stageprofile/objc
objc.stagefeedback: stagefeedback-start
-mv objc/*$(objext) stagefeedback/objc

97
contrib/gcc/objc/README
View File

@ -1,97 +0,0 @@
GNU Objective C notes
*********************
This document is to explain what has been done, and a little about how
specific features differ from other implementations. The runtime has
been completely rewritten in gcc 2.4. The earlier runtime had several
severe bugs and was rather incomplete. The compiler has had several
new features added as well.
This is not documentation for Objective C, it is usable to someone
who knows Objective C from somewhere else.
Runtime API functions
=====================
The runtime is modeled after the NeXT Objective C runtime. That is,
most functions have semantics as it is known from the NeXT. The
names, however, have changed. All runtime API functions have names
of lowercase letters and underscores as opposed to the
`traditional' mixed case names.
The runtime api functions are not documented as of now.
Someone offered to write it, and did it, but we were not allowed to
use it by his university (Very sad story). We have started writing
the documentation over again. This will be announced in appropriate
places when it becomes available.
Protocols
=========
Protocols are now fully supported. The semantics is exactly as on the
NeXT. There is a flag to specify how protocols should be typechecked
when adopted to classes. The normal typechecker requires that all
methods in a given protocol must be implemented in the class that
adopts it -- it is not enough to inherit them. The flag
`-Wno-protocol' causes it to allow inherited methods, while
`-Wprotocols' is the default which requires them defined.
+initialize
===========
This method, if defined, is called before any other instance or class
methods of that particular class. This method is not inherited, and
is thus not called as initializer for a subclass that doesn't define
it itself. Thus, each +initialize method is called exactly once (or
never if no methods of that particular class is never called).
Besides this, it is allowed to have several +initialize methods, one
for each category. The order in which these (multiple methods) are
called is not well defined. I am not completely certain what the
semantics of this method is for other implementations, but this is
how it works for GNU Objective C.
Passivation/Activation/Typedstreams
===================================
This is supported in the style of NeXT TypedStream's. Consult the
headerfile Typedstreams.h for api functions. I (Kresten) have
rewritten it in Objective C, but this implementation is not part of
2.4, it is available from the GNU Objective C prerelease archive.
There is one difference worth noting concerning objects stored with
objc_write_object_reference (aka NXWriteObjectReference). When these
are read back in, their object is not guaranteed to be available until
the `-awake' method is called in the object that requests that object.
To objc_read_object you must pass a pointer to an id, which is valid
after exit from the function calling it (like e.g. an instance
variable). In general, you should not use objects read in until the
-awake method is called.
Acknowledgements
================
The GNU Objective C team: Geoffrey Knauth <gsk@marble.com> (manager),
Tom Wood <wood@next.com> (compiler) and Kresten Krab Thorup
<krab@iesd.auc.dk> (runtime) would like to thank a some people for
participating in the development of the present GNU Objective C.
Paul Burchard <burchard@geom.umn.edu> and Andrew McCallum
<mccallum@cs.rochester.edu> has been very helpful debugging the
runtime. Eric Herring <herring@iesd.auc.dk> has been very helpful
cleaning up after the documentation-copyright disaster and is now
helping with the new documentation.
Steve Naroff <snaroff@next.com> and Richard Stallman
<rms@gnu.ai.mit.edu> has been very helpful with implementation details
in the compiler.
Bug Reports
===========
Please read the section `Submitting Bugreports' of the gcc manual
before you submit any bugs.

40
contrib/gcc/objc/config-lang.in
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@ -1,40 +0,0 @@
# Top level configure fragment for GNU Objective-C
# Copyright (C) 1997, 1998, 2000, 2001, 2002, 2003, 2004, 2005
# Free Software Foundation, Inc.
#This file is part of GCC.
#GCC is free software; you can redistribute it and/or modify
#it under the terms of the GNU General Public License as published by
#the Free Software Foundation; either version 2, or (at your option)
#any later version.
#GCC is distributed in the hope that it will be useful,
#but WITHOUT ANY WARRANTY; without even the implied warranty of
#MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
#GNU General Public License for more details.
#You should have received a copy of the GNU General Public License
#along with GCC; see the file COPYING. If not, write to
#the Free Software Foundation, 51 Franklin Street, Fifth Floor,
#Boston, MA 02110-1301, USA.
# Configure looks for the existence of this file to auto-config each language.
# We define several parameters used by configure:
#
# language - name of language as it would appear in $(LANGUAGES)
# compilers - value to add to $(COMPILERS)
# stagestuff - files to add to $(STAGESTUFF)
language="objc"
compilers="cc1obj\$(exeext)"
stagestuff="cc1obj\$(exeext)"
target_libs=target-libobjc
# Most of the object files for cc1obj actually come from C.
lang_requires="c"
gtfiles="\$(srcdir)/objc/objc-act.h \$(srcdir)/c-parser.c \$(srcdir)/c-tree.h \$(srcdir)/c-decl.c \$(srcdir)/c-objc-common.c \$(srcdir)/c-common.c \$(srcdir)/c-common.h \$(srcdir)/c-pragma.c \$(srcdir)/objc/objc-act.c"

54
contrib/gcc/objc/lang-specs.h
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@ -1,54 +0,0 @@
/* Definitions for specs for Objective-C.
Copyright (C) 1998, 1999, 2002, 2002, 2003, 2005
Free Software Foundation, Inc.
This file is part of GCC.
GCC is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2, or (at your option)
any later version.
GCC is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with GCC; see the file COPYING. If not, write to
the Free Software Foundation, 51 Franklin Street, Fifth Floor,
Boston, MA 02110-1301, USA. */
/* This is the contribution to the `default_compilers' array in gcc.c for
objc. */
{".m", "@objective-c", 0, 0, 0},
{"@objective-c",
"%{E|M|MM:cc1obj -E %{traditional|ftraditional|traditional-cpp:-traditional-cpp}\
%(cpp_options) %(cpp_debug_options)}\
%{!E:%{!M:%{!MM:\
%{traditional|ftraditional|traditional-cpp:\
%eGNU Objective C no longer supports traditional compilation}\
%{save-temps|no-integrated-cpp:cc1obj -E %(cpp_options) -o %{save-temps:%b.mi} %{!save-temps:%g.mi} \n\
cc1obj -fpreprocessed %{save-temps:%b.mi} %{!save-temps:%g.mi} %(cc1_options) %{print-objc-runtime-info} %{gen-decls}}\
%{!save-temps:%{!no-integrated-cpp:\
cc1obj %(cpp_unique_options) %(cc1_options) %{print-objc-runtime-info} %{gen-decls}}}\
%{!fsyntax-only:%(invoke_as)}}}}", 0, 0, 0},
{".mi", "@objc-cpp-output", 0, 0, 0},
{"@objc-cpp-output",
"%{!M:%{!MM:%{!E:cc1obj -fpreprocessed %i %(cc1_options) %{print-objc-runtime-info} %{gen-decls}\
%{!fsyntax-only:%(invoke_as)}}}}", 0, 0, 0},
{"@objective-c-header",
"%{E|M|MM:cc1obj -E %{traditional|ftraditional|traditional-cpp:-traditional-cpp}\
%(cpp_options) %(cpp_debug_options)}\
%{!E:%{!M:%{!MM:\
%{traditional|ftraditional|traditional-cpp:\
%eGNU Objective C no longer supports traditional compilation}\
%{save-temps|no-integrated-cpp:cc1obj -E %(cpp_options) -o %{save-temps:%b.mi} %{!save-temps:%g.mi} \n\
cc1obj -fpreprocessed %b.mi %(cc1_options) %{print-objc-runtime-info} %{gen-decls}\
-o %g.s %{!o*:--output-pch=%i.gch}\
%W{o*:--output-pch=%*}%V}\
%{!save-temps:%{!no-integrated-cpp:\
cc1obj %(cpp_unique_options) %(cc1_options) %{print-objc-runtime-info} %{gen-decls}\
-o %g.s %{!o*:--output-pch=%i.gch}\
%W{o*:--output-pch=%*}%V}}}}}", 0, 0, 0},

9518
contrib/gcc/objc/objc-act.c
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457
contrib/gcc/objc/objc-act.h
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@ -1,457 +0,0 @@
/* Declarations for objc-act.c.
Copyright (C) 1990, 2000, 2001, 2002, 2003, 2004, 2005
Free Software Foundation, Inc.
This file is part of GCC.
GCC is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2, or (at your option)
any later version.
GCC is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with GCC; see the file COPYING. If not, write to
the Free Software Foundation, 51 Franklin Street, Fifth Floor,
Boston, MA 02110-1301, USA. */
#ifndef GCC_OBJC_ACT_H
#define GCC_OBJC_ACT_H
/* For enum gimplify_status */
#include "tree-gimple.h"
/*** Language hooks ***/
bool objc_init (void);
const char *objc_printable_name (tree, int);
tree objc_get_callee_fndecl (tree);
void objc_finish_file (void);
tree objc_fold_obj_type_ref (tree, tree);
enum gimplify_status objc_gimplify_expr (tree *, tree *, tree *);
/* NB: The remaining public functions are prototyped in c-common.h, for the
benefit of stub-objc.c and objc-act.c. */
/* Objective-C structures */
#define CLASS_LANG_SLOT_ELTS 5
#define PROTOCOL_LANG_SLOT_ELTS 2
#define OBJC_INFO_SLOT_ELTS 2
/* KEYWORD_DECL */
#define KEYWORD_KEY_NAME(DECL) ((DECL)->decl_minimal.name)
#define KEYWORD_ARG_NAME(DECL) ((DECL)->decl_non_common.arguments)
/* INSTANCE_METHOD_DECL, CLASS_METHOD_DECL */
#define METHOD_SEL_NAME(DECL) ((DECL)->decl_minimal.name)
#define METHOD_SEL_ARGS(DECL) ((DECL)->decl_non_common.arguments)
#define METHOD_ADD_ARGS(DECL) ((DECL)->decl_non_common.result)
#define METHOD_ADD_ARGS_ELLIPSIS_P(DECL) ((DECL)->decl_common.lang_flag_0)
#define METHOD_DEFINITION(DECL) ((DECL)->decl_common.initial)
#define METHOD_ENCODING(DECL) ((DECL)->decl_minimal.context)
/* CLASS_INTERFACE_TYPE, CLASS_IMPLEMENTATION_TYPE,
CATEGORY_INTERFACE_TYPE, CATEGORY_IMPLEMENTATION_TYPE,
PROTOCOL_INTERFACE_TYPE */
#define CLASS_NAME(CLASS) ((CLASS)->type.name)
#define CLASS_SUPER_NAME(CLASS) (TYPE_CHECK (CLASS)->type.context)
#define CLASS_IVARS(CLASS) TREE_VEC_ELT (TYPE_LANG_SLOT_1 (CLASS), 0)
#define CLASS_RAW_IVARS(CLASS) TREE_VEC_ELT (TYPE_LANG_SLOT_1 (CLASS), 1)
#define CLASS_NST_METHODS(CLASS) ((CLASS)->type.minval)
#define CLASS_CLS_METHODS(CLASS) ((CLASS)->type.maxval)
#define CLASS_STATIC_TEMPLATE(CLASS) TREE_VEC_ELT (TYPE_LANG_SLOT_1 (CLASS), 2)
#define CLASS_CATEGORY_LIST(CLASS) TREE_VEC_ELT (TYPE_LANG_SLOT_1 (CLASS), 3)
#define CLASS_PROTOCOL_LIST(CLASS) TREE_VEC_ELT (TYPE_LANG_SLOT_1 (CLASS), 4)
#define PROTOCOL_NAME(CLASS) ((CLASS)->type.name)
#define PROTOCOL_LIST(CLASS) TREE_VEC_ELT (TYPE_LANG_SLOT_1 (CLASS), 0)
#define PROTOCOL_NST_METHODS(CLASS) ((CLASS)->type.minval)
#define PROTOCOL_CLS_METHODS(CLASS) ((CLASS)->type.maxval)
#define PROTOCOL_FORWARD_DECL(CLASS) TREE_VEC_ELT (TYPE_LANG_SLOT_1 (CLASS), 1)
#define PROTOCOL_DEFINED(CLASS) TREE_USED (CLASS)
/* ObjC-specific information pertaining to RECORD_TYPEs are stored in
the LANG_SPECIFIC structures, which may itself need allocating first. */
/* The following three macros must be overridden (in objcp/objcp-decl.h)
for Objective-C++. */
#define TYPE_OBJC_INFO(TYPE) TYPE_LANG_SPECIFIC (TYPE)->objc_info
#define SIZEOF_OBJC_TYPE_LANG_SPECIFIC sizeof (struct lang_type)
#define ALLOC_OBJC_TYPE_LANG_SPECIFIC(NODE) \
do { \
TYPE_LANG_SPECIFIC (NODE) = GGC_CNEW (struct lang_type); \
} while (0)
#define TYPE_HAS_OBJC_INFO(TYPE) \
(TYPE_LANG_SPECIFIC (TYPE) && TYPE_OBJC_INFO (TYPE))
#define TYPE_OBJC_INTERFACE(TYPE) TREE_VEC_ELT (TYPE_OBJC_INFO (TYPE), 0)
#define TYPE_OBJC_PROTOCOL_LIST(TYPE) TREE_VEC_ELT (TYPE_OBJC_INFO (TYPE), 1)
#define INIT_TYPE_OBJC_INFO(TYPE) \
do \
{ \
if (!TYPE_LANG_SPECIFIC (TYPE)) \
ALLOC_OBJC_TYPE_LANG_SPECIFIC(TYPE); \
if (!TYPE_OBJC_INFO (TYPE)) \
TYPE_OBJC_INFO (TYPE) \
= make_tree_vec (OBJC_INFO_SLOT_ELTS); \
} \
while (0)
#define DUP_TYPE_OBJC_INFO(DST, SRC) \
do \
{ \
ALLOC_OBJC_TYPE_LANG_SPECIFIC(DST); \
if (TYPE_LANG_SPECIFIC (SRC)) \
memcpy (TYPE_LANG_SPECIFIC (DST), \
TYPE_LANG_SPECIFIC (SRC), \
SIZEOF_OBJC_TYPE_LANG_SPECIFIC); \
TYPE_OBJC_INFO (DST) \
= make_tree_vec (OBJC_INFO_SLOT_ELTS); \
} \
while (0)
#define TYPED_OBJECT(TYPE) \
(TREE_CODE (TYPE) == RECORD_TYPE \
&& TYPE_HAS_OBJC_INFO (TYPE) \
&& TYPE_OBJC_INTERFACE (TYPE))
#define OBJC_TYPE_NAME(TYPE) TYPE_NAME(TYPE)
#define OBJC_SET_TYPE_NAME(TYPE, NAME) (TYPE_NAME (TYPE) = NAME)
/* Define the Objective-C or Objective-C++ language-specific tree codes. */
#define DEFTREECODE(SYM, NAME, TYPE, LENGTH) SYM,
enum objc_tree_code {
#if defined (GCC_CP_TREE_H)
LAST_BASE_TREE_CODE = LAST_CPLUS_TREE_CODE,
#else
#if defined (GCC_C_TREE_H)
LAST_BASE_TREE_CODE = LAST_C_TREE_CODE,
#else
#error You must include <c-tree.h> or <cp/cp-tree.h> before <objc/objc-act.h>
#endif
#endif
#include "objc-tree.def"
LAST_OBJC_TREE_CODE
};
#undef DEFTREECODE
/* Hash tables to manage the global pool of method prototypes. */
typedef struct hashed_entry *hash;
typedef struct hashed_attribute *attr;
struct hashed_attribute GTY(())
{
attr next;
tree value;
};
struct hashed_entry GTY(())
{
attr list;
hash next;
tree key;
};
extern GTY ((length ("SIZEHASHTABLE"))) hash *nst_method_hash_list;
extern GTY ((length ("SIZEHASHTABLE"))) hash *cls_method_hash_list;
#define SIZEHASHTABLE 257
/* Objective-C/Objective-C++ @implementation list. */
struct imp_entry GTY(())
{
struct imp_entry *next;
tree imp_context;
tree imp_template;
tree class_decl; /* _OBJC_CLASS_<my_name>; */
tree meta_decl; /* _OBJC_METACLASS_<my_name>; */
BOOL_BITFIELD has_cxx_cdtors : 1;
};
extern GTY(()) struct imp_entry *imp_list;
extern GTY(()) int imp_count; /* `@implementation' */
extern GTY(()) int cat_count; /* `@category' */
extern GTY(()) enum tree_code objc_inherit_code;
extern GTY(()) int objc_public_flag;
/* Objective-C/Objective-C++ global tree enumeration. */
enum objc_tree_index
{
OCTI_STATIC_NST,
OCTI_STATIC_NST_DECL,
OCTI_SELF_ID,
OCTI_UCMD_ID,
OCTI_SELF_DECL,
OCTI_UMSG_DECL,
OCTI_UMSG_FAST_DECL,
OCTI_UMSG_SUPER_DECL,
OCTI_UMSG_STRET_DECL,
OCTI_UMSG_SUPER_STRET_DECL,
OCTI_GET_CLASS_DECL,
OCTI_GET_MCLASS_DECL,
OCTI_SUPER_TYPE,
OCTI_SEL_TYPE,
OCTI_ID_TYPE,
OCTI_CLS_TYPE,
OCTI_NST_TYPE,
OCTI_PROTO_TYPE,
OCTI_CLS_CHAIN,
OCTI_ALIAS_CHAIN,
OCTI_INTF_CHAIN,
OCTI_PROTO_CHAIN,
OCTI_IMPL_CHAIN,
OCTI_CLS_REF_CHAIN,
OCTI_SEL_REF_CHAIN,
OCTI_IVAR_CHAIN,
OCTI_CLS_NAMES_CHAIN,
OCTI_METH_VAR_NAMES_CHAIN,
OCTI_METH_VAR_TYPES_CHAIN,
OCTI_SYMBOLS_DECL,
OCTI_NST_VAR_DECL,
OCTI_CLS_VAR_DECL,
OCTI_NST_METH_DECL,
OCTI_CLS_METH_DECL,
OCTI_CLS_DECL,
OCTI_MCLS_DECL,
OCTI_SEL_TABLE_DECL,
OCTI_MODULES_DECL,
OCTI_GNU_INIT_DECL,
OCTI_INTF_CTX,
OCTI_IMPL_CTX,
OCTI_METH_CTX,
OCTI_IVAR_CTX,
OCTI_IMPL_TEMPL,
OCTI_CLS_TEMPL,
OCTI_CAT_TEMPL,
OCTI_UPRIV_REC,
OCTI_PROTO_TEMPL,
OCTI_SEL_TEMPL,
OCTI_UCLS_SUPER_REF,
OCTI_UUCLS_SUPER_REF,
OCTI_METH_TEMPL,
OCTI_IVAR_TEMPL,
OCTI_METH_LIST_TEMPL,
OCTI_METH_PROTO_LIST_TEMPL,
OCTI_IVAR_LIST_TEMPL,
OCTI_SYMTAB_TEMPL,
OCTI_MODULE_TEMPL,
OCTI_SUPER_TEMPL,
OCTI_OBJ_REF,
OCTI_CLS_REF,
OCTI_METH_PROTO_TEMPL,
OCTI_FUNCTION1_TEMPL,
OCTI_FUNCTION2_TEMPL,
OCTI_OBJ_ID,
OCTI_CLS_ID,
OCTI_ID_NAME,
OCTI_CLASS_NAME,
OCTI_CNST_STR_ID,
OCTI_CNST_STR_TYPE,
OCTI_CNST_STR_GLOB_ID,
OCTI_STRING_CLASS_DECL,
OCTI_INTERNAL_CNST_STR_TYPE,
OCTI_SUPER_DECL,
OCTI_UMSG_NONNIL_DECL,
OCTI_UMSG_NONNIL_STRET_DECL,
OCTI_STORAGE_CLS,
OCTI_EXCEPTION_EXTRACT_DECL,
OCTI_EXCEPTION_TRY_ENTER_DECL,
OCTI_EXCEPTION_TRY_EXIT_DECL,
OCTI_EXCEPTION_MATCH_DECL,
OCTI_EXCEPTION_THROW_DECL,
OCTI_SYNC_ENTER_DECL,
OCTI_SYNC_EXIT_DECL,
OCTI_SETJMP_DECL,
OCTI_EXCDATA_TEMPL,
OCTI_STACK_EXCEPTION_DATA_DECL,
OCTI_LOCAL_EXCEPTION_DECL,
OCTI_RETHROW_EXCEPTION_DECL,
OCTI_EVAL_ONCE_DECL,
OCTI_CATCH_TYPE,
OCTI_EXECCLASS_DECL,
OCTI_ASSIGN_IVAR_DECL,
OCTI_ASSIGN_IVAR_FAST_DECL,
OCTI_ASSIGN_GLOBAL_DECL,
OCTI_ASSIGN_STRONGCAST_DECL,
OCTI_MAX
};
extern GTY(()) tree objc_global_trees[OCTI_MAX];
/* List of classes with list of their static instances. */
#define objc_static_instances objc_global_trees[OCTI_STATIC_NST]
/* The declaration of the array administrating the static instances. */
#define static_instances_decl objc_global_trees[OCTI_STATIC_NST_DECL]
/* Some commonly used instances of "identifier_node". */
#define self_id objc_global_trees[OCTI_SELF_ID]
#define ucmd_id objc_global_trees[OCTI_UCMD_ID]
#define self_decl objc_global_trees[OCTI_SELF_DECL]
#define umsg_decl objc_global_trees[OCTI_UMSG_DECL]
#define umsg_fast_decl objc_global_trees[OCTI_UMSG_FAST_DECL]
#define umsg_super_decl objc_global_trees[OCTI_UMSG_SUPER_DECL]
#define umsg_stret_decl objc_global_trees[OCTI_UMSG_STRET_DECL]
#define umsg_super_stret_decl objc_global_trees[OCTI_UMSG_SUPER_STRET_DECL]
#define objc_get_class_decl objc_global_trees[OCTI_GET_CLASS_DECL]
#define objc_get_meta_class_decl \
objc_global_trees[OCTI_GET_MCLASS_DECL]
#define objc_super_type objc_global_trees[OCTI_SUPER_TYPE]
#define objc_selector_type objc_global_trees[OCTI_SEL_TYPE]
#define objc_object_type objc_global_trees[OCTI_ID_TYPE]
#define objc_class_type objc_global_trees[OCTI_CLS_TYPE]
#define objc_instance_type objc_global_trees[OCTI_NST_TYPE]
#define objc_protocol_type objc_global_trees[OCTI_PROTO_TYPE]
/* Type checking macros. */
#define IS_ID(TYPE) \
(TREE_CODE (TYPE) == POINTER_TYPE \
&& (TYPE_MAIN_VARIANT (TREE_TYPE (TYPE)) \
== TREE_TYPE (objc_object_type)))
#define IS_CLASS(TYPE) \
(TREE_CODE (TYPE) == POINTER_TYPE \
&& (TYPE_MAIN_VARIANT (TREE_TYPE (TYPE)) \
== TREE_TYPE (objc_class_type)))
#define IS_PROTOCOL_QUALIFIED_UNTYPED(TYPE) \
((IS_ID (TYPE) || IS_CLASS (TYPE)) \
&& TYPE_HAS_OBJC_INFO (TREE_TYPE (TYPE)) \
&& TYPE_OBJC_PROTOCOL_LIST (TREE_TYPE (TYPE)))
#define IS_SUPER(TYPE) \
(TREE_CODE (TYPE) == POINTER_TYPE \
&& TREE_TYPE (TYPE) == objc_super_template)
#define class_chain objc_global_trees[OCTI_CLS_CHAIN]
#define alias_chain objc_global_trees[OCTI_ALIAS_CHAIN]
#define interface_chain objc_global_trees[OCTI_INTF_CHAIN]
#define protocol_chain objc_global_trees[OCTI_PROTO_CHAIN]
#define implemented_classes objc_global_trees[OCTI_IMPL_CHAIN]
/* Chains to manage selectors that are referenced and defined in the
module. */
#define cls_ref_chain objc_global_trees[OCTI_CLS_REF_CHAIN] /* Classes referenced. */
#define sel_ref_chain objc_global_trees[OCTI_SEL_REF_CHAIN] /* Selectors referenced. */
#define objc_ivar_chain objc_global_trees[OCTI_IVAR_CHAIN]
/* Chains to manage uniquing of strings. */
#define class_names_chain objc_global_trees[OCTI_CLS_NAMES_CHAIN]
#define meth_var_names_chain objc_global_trees[OCTI_METH_VAR_NAMES_CHAIN]
#define meth_var_types_chain objc_global_trees[OCTI_METH_VAR_TYPES_CHAIN]
/* Backend data declarations. */
#define UOBJC_SYMBOLS_decl objc_global_trees[OCTI_SYMBOLS_DECL]
#define UOBJC_INSTANCE_VARIABLES_decl objc_global_trees[OCTI_NST_VAR_DECL]
#define UOBJC_CLASS_VARIABLES_decl objc_global_trees[OCTI_CLS_VAR_DECL]
#define UOBJC_INSTANCE_METHODS_decl objc_global_trees[OCTI_NST_METH_DECL]
#define UOBJC_CLASS_METHODS_decl objc_global_trees[OCTI_CLS_METH_DECL]
#define UOBJC_CLASS_decl objc_global_trees[OCTI_CLS_DECL]
#define UOBJC_METACLASS_decl objc_global_trees[OCTI_MCLS_DECL]
#define UOBJC_SELECTOR_TABLE_decl objc_global_trees[OCTI_SEL_TABLE_DECL]
#define UOBJC_MODULES_decl objc_global_trees[OCTI_MODULES_DECL]
#define GNU_INIT_decl objc_global_trees[OCTI_GNU_INIT_DECL]
/* The following are used when compiling a class implementation.
implementation_template will normally be an interface, however if
none exists this will be equal to objc_implementation_context...it is
set in start_class. */
#define objc_interface_context objc_global_trees[OCTI_INTF_CTX]
#define objc_implementation_context objc_global_trees[OCTI_IMPL_CTX]
#define objc_method_context objc_global_trees[OCTI_METH_CTX]
#define objc_ivar_context objc_global_trees[OCTI_IVAR_CTX]
#define implementation_template objc_global_trees[OCTI_IMPL_TEMPL]
#define objc_class_template objc_global_trees[OCTI_CLS_TEMPL]
#define objc_category_template objc_global_trees[OCTI_CAT_TEMPL]
#define uprivate_record objc_global_trees[OCTI_UPRIV_REC]
#define objc_protocol_template objc_global_trees[OCTI_PROTO_TEMPL]
#define objc_selector_template objc_global_trees[OCTI_SEL_TEMPL]
#define ucls_super_ref objc_global_trees[OCTI_UCLS_SUPER_REF]
#define uucls_super_ref objc_global_trees[OCTI_UUCLS_SUPER_REF]
#define umsg_nonnil_decl objc_global_trees[OCTI_UMSG_NONNIL_DECL]
#define umsg_nonnil_stret_decl objc_global_trees[OCTI_UMSG_NONNIL_STRET_DECL]
#define objc_storage_class objc_global_trees[OCTI_STORAGE_CLS]
#define objc_exception_extract_decl \
objc_global_trees[OCTI_EXCEPTION_EXTRACT_DECL]
#define objc_exception_try_enter_decl \
objc_global_trees[OCTI_EXCEPTION_TRY_ENTER_DECL]
#define objc_exception_try_exit_decl \
objc_global_trees[OCTI_EXCEPTION_TRY_EXIT_DECL]
#define objc_exception_match_decl \
objc_global_trees[OCTI_EXCEPTION_MATCH_DECL]
#define objc_exception_throw_decl \
objc_global_trees[OCTI_EXCEPTION_THROW_DECL]
#define objc_sync_enter_decl objc_global_trees[OCTI_SYNC_ENTER_DECL]
#define objc_sync_exit_decl objc_global_trees[OCTI_SYNC_EXIT_DECL]
#define objc_exception_data_template \
objc_global_trees[OCTI_EXCDATA_TEMPL]
#define objc_setjmp_decl objc_global_trees[OCTI_SETJMP_DECL]
#define objc_stack_exception_data \
objc_global_trees[OCTI_STACK_EXCEPTION_DATA_DECL]
#define objc_caught_exception objc_global_trees[OCTI_LOCAL_EXCEPTION_DECL]
#define objc_rethrow_exception objc_global_trees[OCTI_RETHROW_EXCEPTION_DECL]
#define objc_eval_once objc_global_trees[OCTI_EVAL_ONCE_DECL]
#define objc_catch_type objc_global_trees[OCTI_CATCH_TYPE]
#define execclass_decl objc_global_trees[OCTI_EXECCLASS_DECL]
#define objc_assign_ivar_decl objc_global_trees[OCTI_ASSIGN_IVAR_DECL]
#define objc_assign_ivar_fast_decl \
objc_global_trees[OCTI_ASSIGN_IVAR_FAST_DECL]
#define objc_assign_global_decl objc_global_trees[OCTI_ASSIGN_GLOBAL_DECL]
#define objc_assign_strong_cast_decl \
objc_global_trees[OCTI_ASSIGN_STRONGCAST_DECL]
#define objc_method_template objc_global_trees[OCTI_METH_TEMPL]
#define objc_ivar_template objc_global_trees[OCTI_IVAR_TEMPL]
#define objc_method_list_ptr objc_global_trees[OCTI_METH_LIST_TEMPL]
#define objc_method_proto_list_ptr \
objc_global_trees[OCTI_METH_PROTO_LIST_TEMPL]
#define objc_ivar_list_ptr objc_global_trees[OCTI_IVAR_LIST_TEMPL]
#define objc_symtab_template objc_global_trees[OCTI_SYMTAB_TEMPL]
#define objc_module_template objc_global_trees[OCTI_MODULE_TEMPL]
#define objc_super_template objc_global_trees[OCTI_SUPER_TEMPL]
#define objc_object_reference objc_global_trees[OCTI_OBJ_REF]
#define objc_class_reference objc_global_trees[OCTI_CLS_REF]
#define objc_method_prototype_template \
objc_global_trees[OCTI_METH_PROTO_TEMPL]
#define function1_template objc_global_trees[OCTI_FUNCTION1_TEMPL]
#define function2_template objc_global_trees[OCTI_FUNCTION2_TEMPL]
#define objc_object_id objc_global_trees[OCTI_OBJ_ID]
#define objc_class_id objc_global_trees[OCTI_CLS_ID]
#define objc_object_name objc_global_trees[OCTI_ID_NAME]
#define objc_class_name objc_global_trees[OCTI_CLASS_NAME]
#define constant_string_id objc_global_trees[OCTI_CNST_STR_ID]
#define constant_string_type objc_global_trees[OCTI_CNST_STR_TYPE]
#define constant_string_global_id \
objc_global_trees[OCTI_CNST_STR_GLOB_ID]
#define string_class_decl objc_global_trees[OCTI_STRING_CLASS_DECL]
#define internal_const_str_type objc_global_trees[OCTI_INTERNAL_CNST_STR_TYPE]
#define UOBJC_SUPER_decl objc_global_trees[OCTI_SUPER_DECL]
#endif /* GCC_OBJC_ACT_H */

133
contrib/gcc/objc/objc-lang.c
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@ -1,133 +0,0 @@
/* Language-dependent hooks for Objective-C.
Copyright 2001, 2002, 2003, 2004, 2005 Free Software Foundation, Inc.
Contributed by Ziemowit Laski <zlaski@apple.com>
This file is part of GCC.
GCC is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2, or (at your option)
any later version.
GCC is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with GCC; see the file COPYING. If not, write to
the Free Software Foundation, 51 Franklin Street, Fifth Floor,
Boston, MA 02110-1301, USA. */
#include "config.h"
#include "system.h"
#include "coretypes.h"
#include "tm.h"
#include "tree.h"
#include "c-tree.h"
#include "c-common.h"
#include "ggc.h"
#include "objc-act.h"
#include "langhooks.h"
#include "langhooks-def.h"
#include "diagnostic.h"
#include "c-objc-common.h"
enum c_language_kind c_language = clk_objc;
static void objc_init_ts (void);
/* Lang hooks common to C and ObjC are declared in c-objc-common.h;
consequently, there should be very few hooks below. */
#undef LANG_HOOKS_NAME
#define LANG_HOOKS_NAME "GNU Objective-C"
#undef LANG_HOOKS_INIT
#define LANG_HOOKS_INIT objc_init
#undef LANG_HOOKS_DECL_PRINTABLE_NAME
#define LANG_HOOKS_DECL_PRINTABLE_NAME objc_printable_name
#undef LANG_HOOKS_GIMPLIFY_EXPR
#define LANG_HOOKS_GIMPLIFY_EXPR objc_gimplify_expr
#undef LANG_HOOKS_GET_CALLEE_FNDECL
#define LANG_HOOKS_GET_CALLEE_FNDECL objc_get_callee_fndecl
#undef LANG_HOOKS_INIT_TS
#define LANG_HOOKS_INIT_TS objc_init_ts
/* Each front end provides its own lang hook initializer. */
const struct lang_hooks lang_hooks = LANG_HOOKS_INITIALIZER;
/* Table indexed by tree code giving a string containing a character
classifying the tree code. */
#define DEFTREECODE(SYM, NAME, TYPE, LENGTH) TYPE,
const enum tree_code_class tree_code_type[] = {
#include "tree.def"
tcc_exceptional,
#include "c-common.def"
tcc_exceptional,
#include "objc-tree.def"
};
#undef DEFTREECODE
/* Table indexed by tree code giving number of expression
operands beyond the fixed part of the node structure.
Not used for types or decls. */
#define DEFTREECODE(SYM, NAME, TYPE, LENGTH) LENGTH,
const unsigned char tree_code_length[] = {
#include "tree.def"
0,
#include "c-common.def"
0,
#include "objc-tree.def"
};
#undef DEFTREECODE
/* Names of tree components.
Used for printing out the tree and error messages. */
#define DEFTREECODE(SYM, NAME, TYPE, LEN) NAME,
const char * const tree_code_name[] = {
#include "tree.def"
"@@dummy",
#include "c-common.def"
"@@dummy",
#include "objc-tree.def"
};
#undef DEFTREECODE
/* Lang hook routines common to C and ObjC appear in c-objc-common.c;
there should be very few (if any) routines below. */
static void
objc_init_ts (void)
{
tree_contains_struct[CLASS_METHOD_DECL][TS_DECL_NON_COMMON] = 1;
tree_contains_struct[INSTANCE_METHOD_DECL][TS_DECL_NON_COMMON] = 1;
tree_contains_struct[KEYWORD_DECL][TS_DECL_NON_COMMON] = 1;
tree_contains_struct[CLASS_METHOD_DECL][TS_DECL_WITH_VIS] = 1;
tree_contains_struct[INSTANCE_METHOD_DECL][TS_DECL_WITH_VIS] = 1;
tree_contains_struct[KEYWORD_DECL][TS_DECL_WITH_VIS] = 1;
tree_contains_struct[CLASS_METHOD_DECL][TS_DECL_WRTL] = 1;
tree_contains_struct[INSTANCE_METHOD_DECL][TS_DECL_WRTL] = 1;
tree_contains_struct[KEYWORD_DECL][TS_DECL_WRTL] = 1;
tree_contains_struct[CLASS_METHOD_DECL][TS_DECL_MINIMAL] = 1;
tree_contains_struct[INSTANCE_METHOD_DECL][TS_DECL_MINIMAL] = 1;
tree_contains_struct[KEYWORD_DECL][TS_DECL_MINIMAL] = 1;
tree_contains_struct[CLASS_METHOD_DECL][TS_DECL_COMMON] = 1;
tree_contains_struct[INSTANCE_METHOD_DECL][TS_DECL_COMMON] = 1;
tree_contains_struct[KEYWORD_DECL][TS_DECL_COMMON] = 1;
}
void
finish_file (void)
{
objc_finish_file ();
}
#include "gtype-objc.h"

47
contrib/gcc/objc/objc-tree.def
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@ -1,47 +0,0 @@
/* This file contains the definitions and documentation for the
additional tree codes used in the Objective C front end (see tree.def
for the standard codes).
Copyright (C) 1990, 1997, 1998, 1999, 2000, 2001, 2003, 2004
Free Software Foundation, Inc.
This file is part of GCC.
GCC is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2, or (at your option)
any later version.
GCC is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with GCC; see the file COPYING. If not, write to
the Free Software Foundation, 51 Franklin Street, Fifth Floor,
Boston, MA 02110-1301, USA. */
/* Objective-C types. */
DEFTREECODE (CLASS_INTERFACE_TYPE, "class_interface_type", tcc_type, 0)
DEFTREECODE (CLASS_IMPLEMENTATION_TYPE, "class_implementation_type",
tcc_type, 0)
DEFTREECODE (CATEGORY_INTERFACE_TYPE, "category_interface_type", tcc_type, 0)
DEFTREECODE (CATEGORY_IMPLEMENTATION_TYPE,"category_implementation_type",
tcc_type, 0)
DEFTREECODE (PROTOCOL_INTERFACE_TYPE, "protocol_interface_type", tcc_type, 0)
/* Objective-C decls. */
DEFTREECODE (KEYWORD_DECL, "keyword_decl", tcc_declaration, 0)
DEFTREECODE (INSTANCE_METHOD_DECL, "instance_method_decl", tcc_declaration, 0)
DEFTREECODE (CLASS_METHOD_DECL, "class_method_decl", tcc_declaration, 0)
/* Objective-C expressions. */
DEFTREECODE (MESSAGE_SEND_EXPR, "message_send_expr", tcc_expression, 3)
DEFTREECODE (CLASS_REFERENCE_EXPR, "class_reference_expr", tcc_expression, 1)
/*
Local variables:
mode:c
End:
*/

1272
contrib/libobjc/ChangeLog
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376
contrib/libobjc/Makefile.in
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@ -1,376 +0,0 @@
# Makefile for GNU Objective C runtime library.
# Copyright 1993, 1995, 1996, 1997, 1998, 1999, 2001, 2002, 2003, 2004,
# 2005, 2006 Free Software Foundation, Inc.
#This file is part of GCC.
#GCC is free software; you can redistribute it and/or modify
#it under the terms of the GNU General Public License as published by
#the Free Software Foundation; either version 2, or (at your option)
#any later version.
#GCC is distributed in the hope that it will be useful,
#but WITHOUT ANY WARRANTY; without even the implied warranty of
#MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
#GNU General Public License for more details.
#You should have received a copy of the GNU General Public License
#along with GCC; see the file COPYING. If not, write to
#the Free Software Foundation, 51 Franklin Street, Fifth Floor,
#Boston, MA 02110-1301, USA. */
#This was cribbed from the libchill, libiberty and libstdc++
#Makefile.in files. Some of this stuff may be unnecessary and
#worthless.
SHELL = @SHELL@
MAKEOVERRIDES=
#### Start of system configuration section. ####
srcdir = @glibcpp_srcdir@
VPATH = @glibcpp_srcdir@
prefix = @prefix@
exec_prefix = @exec_prefix@
target_noncanonical = @target_noncanonical@
gcc_version := $(shell cat $(srcdir)/../gcc/BASE-VER)
host_subdir = @host_subdir@
top_srcdir = @top_srcdir@
multi_basedir = @multi_basedir@
toolexecdir = @toolexecdir@
# Toolexecdir is used only by toolexeclibdir
toolexeclibdir = @toolexeclibdir@
includedirname = @includedirname@
libext = @libext@
extra_ldflags_libobjc = @extra_ldflags_libobjc@
top_builddir = .
libdir = $(exec_prefix)/lib
libsubdir = $(libdir)/gcc/$(target_noncanonical)/$(gcc_version)
# Multilib support variables.
MULTISRCTOP =
MULTIBUILDTOP =
MULTIDIRS =
MULTISUBDIR =
MULTIDO = true
MULTICLEAN = true
# Not configured per top-level version, since that doesn't get passed
# down at configure time, but overrridden by the top-level install
# target.
INSTALL = @INSTALL@
INSTALL_PROGRAM = @INSTALL_PROGRAM@
INSTALL_DATA = @INSTALL_DATA@
AR = @AR@
AR_FLAGS = rc
RANLIB = @RANLIB@
CC = @CC@
CFLAGS = @CFLAGS@
WARN_CFLAGS = -W -Wall -Wwrite-strings -Wstrict-prototypes
ALL_CFLAGS = -I. -I$(srcdir) $(CPPFLAGS) $(DEFS) $(CFLAGS) $(WARN_CFLAGS) \
-DIN_GCC -DIN_TARGET_LIBS -fno-strict-aliasing -fexceptions
# Libtool
# The following strings describe the version of the obj-C library
# begin compiled and compatibility issues.
# Please refer to Libtool documentation about how to manage these
# numbers.
LIBOBJC_VERSION = @VERSION@
LIBOBJC_GC_VERSION = @VERSION@
LIBTOOL = @LIBTOOL@
LIBTOOL_COMPILE = $(LIBTOOL) --mode=compile
LIBTOOL_LINK = $(LIBTOOL) --mode=link
LIBTOOL_INSTALL = $(LIBTOOL) --mode=install
LIBTOOL_CLEAN = $(LIBTOOL) --mode=clean
#LIBTOOL_UNINSTALL = $(LIBTOOL) --mode=uninstall
OBJC_GCFLAGS=-DOBJC_WITH_GC=1
OBJC_THREAD_FILE=thr-objc
OBJC_BOEHM_GC=@OBJC_BOEHM_GC@
OBJC_BOEHM_GC_INCLUDES=@OBJC_BOEHM_GC_INCLUDES@
INCLUDES = -I$(srcdir)/objc -I$(srcdir)/$(MULTISRCTOP)../gcc \
-I$(srcdir)/$(MULTISRCTOP)../gcc/config \
-I$(MULTIBUILDTOP)../../$(host_subdir)/gcc \
-I$(srcdir)/$(MULTISRCTOP)../include \
$(OBJC_BOEHM_GC_INCLUDES)
.SUFFIXES:
.SUFFIXES: .c .m .lo
.c.lo:
$(LIBTOOL_COMPILE) $(CC) -c $(ALL_CFLAGS) $(INCLUDES) $<
.m.lo:
$(LIBTOOL_COMPILE) $(CC) -c $(ALL_CFLAGS) $(INCLUDES) $<
# Flags to pass to a recursive make.
FLAGS_TO_PASS = \
"AR=$(AR)" \
"AR_FLAGS=$(AR_FLAGS)" \
"CC=$(CC)" \
"CFLAGS=$(CFLAGS)" \
"DESTDIR=$(DESTDIR)" \
"LIBCFLAGS=$(LIBCFLAGS)" \
"EXTRA_OFILES=$(EXTRA_OFILES)" \
"HDEFINES=$(HDEFINES)" \
"INSTALL=$(INSTALL)" \
"INSTALL_DATA=$(INSTALL_DATA)" \
"INSTALL_PROGRAM=$(INSTALL_PROGRAM)" \
"LDFLAGS=$(LDFLAGS)" \
"LIBTOOL=$(LIBTOOL)" \
"LOADLIBES=$(LOADLIBES)" \
"PICFLAG=$(PICFLAG)" \
"RANLIB=$(RANLIB)" \
"SHELL=$(SHELL)" \
"prefix=$(prefix)" \
"exec_prefix=$(exec_prefix)" \
"libdir=$(libdir)" \
"libsubdir=$(libsubdir)" \
"tooldir=$(tooldir)"
all: libobjc$(libext).la $(OBJC_BOEHM_GC)
: $(MAKE) ; exec $(MULTIDO) $(FLAGS_TO_PASS) multi-do DO=all
# User-visible header files.
OBJC_H = hash.h objc-list.h sarray.h objc.h objc-api.h \
NXConstStr.h Object.h Protocol.h encoding.h typedstream.h \
thr.h objc-decls.h
# Modules that comprise the runtime library.
OBJS = archive.lo class.lo encoding.lo gc.lo hash.lo init.lo linking.lo \
misc.lo nil_method.lo NXConstStr.lo Object.lo objects.lo \
Protocol.lo sarray.lo selector.lo sendmsg.lo thr.lo \
$(OBJC_THREAD_FILE).lo exception.lo
OBJS_GC = archive_gc.lo class_gc.lo encoding_gc.lo gc_gc.lo hash_gc.lo \
init_gc.lo linking_gc.lo misc_gc.lo nil_method_gc.lo \
NXConstStr_gc.lo Object_gc.lo objects_gc.lo Protocol_gc.lo \
sarray_gc.lo selector_gc.lo sendmsg_gc.lo thr_gc.lo \
$(OBJC_THREAD_FILE)_gc.lo exception_gc.lo
runtime-info.h:
echo "" > tmp-runtime.m
echo "/* This file is automatically generated */" > $@
$(CC) $(MULTIFLAGS) -print-objc-runtime-info -S tmp-runtime.m >> $@
rm -f tmp-runtime.m tmp-runtime.s
archive_gc.lo: archive.c
$(LIBTOOL_COMPILE) $(CC) -c -o $@ $(ALL_CFLAGS) $(OBJC_GCFLAGS) \
$(INCLUDES) $<
class_gc.lo: class.c
$(LIBTOOL_COMPILE) $(CC) -c -o $@ $(ALL_CFLAGS) $(OBJC_GCFLAGS) \
$(INCLUDES) $<
encoding_gc.lo: encoding.c
$(LIBTOOL_COMPILE) $(CC) -c -o $@ $(ALL_CFLAGS) $(OBJC_GCFLAGS) \
$(INCLUDES) $<
gc.lo: gc.c
$(LIBTOOL_COMPILE) $(CC) -c -o $@ $(ALL_CFLAGS) $(INCLUDES) $<
gc_gc.lo: gc.c
$(LIBTOOL_COMPILE) $(CC) -c -o $@ $(ALL_CFLAGS) $(OBJC_GCFLAGS) \
$(INCLUDES) $<
hash_gc.lo: hash.c
$(LIBTOOL_COMPILE) $(CC) -c -o $@ $(ALL_CFLAGS) $(OBJC_GCFLAGS) \
$(INCLUDES) $<
init_gc.lo: init.c
$(LIBTOOL_COMPILE) $(CC) -c -o $@ $(ALL_CFLAGS) $(OBJC_GCFLAGS) \
$(INCLUDES) $<
linking.lo: linking.m
$(LIBTOOL_COMPILE) $(CC) -fgnu-runtime -c -o $@ $(ALL_CFLAGS) \
$(INCLUDES) $<
linking_gc.lo: linking.m
$(LIBTOOL_COMPILE) $(CC) -fgnu-runtime -c -o $@ $(ALL_CFLAGS) \
$(OBJC_GCFLAGS) $(INCLUDES) $<
misc_gc.lo: misc.c
$(LIBTOOL_COMPILE) $(CC) -c $(ALL_CFLAGS) -o $@ $(OBJC_GCFLAGS) \
$(INCLUDES) $<
nil_method_gc.lo: nil_method.c
$(LIBTOOL_COMPILE) $(CC) -c $(ALL_CFLAGS) -o $@ $(OBJC_GCFLAGS) \
$(INCLUDES) $<
NXConstStr.lo: NXConstStr.m
$(LIBTOOL_COMPILE) $(CC) -fgnu-runtime -c -o $@ $(ALL_CFLAGS) \
$(INCLUDES) $<
NXConstStr_gc.lo: NXConstStr.m
$(LIBTOOL_COMPILE) $(CC) -fgnu-runtime -c -o $@ $(ALL_CFLAGS) \
$(OBJC_GCFLAGS) $(INCLUDES) $<
Object.lo: Object.m
$(LIBTOOL_COMPILE) $(CC) -fgnu-runtime -c -o $@ $(ALL_CFLAGS) \
$(INCLUDES) $<
Object_gc.lo: Object.m
$(LIBTOOL_COMPILE) $(CC) -fgnu-runtime -c -o $@ $(ALL_CFLAGS) \
$(OBJC_GCFLAGS) $(INCLUDES) $<
objects_gc.lo: objects.c
$(LIBTOOL_COMPILE) $(CC) -c $(ALL_CFLAGS) -o $@ $(OBJC_GCFLAGS) \
$(INCLUDES) $<
Protocol.lo: Protocol.m
$(LIBTOOL_COMPILE) $(CC) -fgnu-runtime -c -o $@ $(ALL_CFLAGS) \
$(INCLUDES) $<
Protocol_gc.lo: Protocol.m
$(LIBTOOL_COMPILE) $(CC) -fgnu-runtime -c -o $@ $(ALL_CFLAGS) \
$(OBJC_GCFLAGS) $(INCLUDES) $<
sarray_gc.lo: sarray.c
$(LIBTOOL_COMPILE) $(CC) -c -o $@ $(ALL_CFLAGS) $(OBJC_GCFLAGS) \
$(INCLUDES) $<
selector_gc.lo: selector.c
$(LIBTOOL_COMPILE) $(CC) -c -o $@ $(ALL_CFLAGS) $(OBJC_GCFLAGS) \
$(INCLUDES) $<
sendmsg.lo: sendmsg.c runtime-info.h
$(LIBTOOL_COMPILE) $(CC) -c -o $@ $(ALL_CFLAGS) $(INCLUDES) $<
sendmsg_gc.lo: sendmsg.c runtime-info.h
$(LIBTOOL_COMPILE) $(CC) -c -o $@ $(ALL_CFLAGS) $(OBJC_GCFLAGS) \
$(INCLUDES) $<
thr_gc.lo: thr.c
$(LIBTOOL_COMPILE) $(CC) -c -o $@ $(ALL_CFLAGS) $(OBJC_GCFLAGS) \
$(INCLUDES) $<
$(OBJC_THREAD_FILE)_gc.lo: $(OBJC_THREAD_FILE).c
$(LIBTOOL_COMPILE) $(CC) -c -o $@ $(ALL_CFLAGS) $(OBJC_GCFLAGS) \
$(INCLUDES) $<
exception.lo: exception.c
$(LIBTOOL_COMPILE) $(CC) -c -o $@ $(ALL_CFLAGS) \
-fexceptions $(INCLUDES) $<
exception_gc.lo: exception.c
$(LIBTOOL_COMPILE) $(CC) -c -o $@ $(ALL_CFLAGS) $(OBJC_GCFLAGS) \
-fexceptions $(INCLUDES) $<
doc: info dvi pdf html
# No install-html support
.PHONY: install-html
install-html:
libobjc$(libext).la: $(OBJS)
$(LIBTOOL_LINK) $(CC) -o $@ $(OBJS) \
-rpath $(toolexeclibdir) \
-version-info $(LIBOBJC_VERSION) $(extra_ldflags_libobjc)
libobjc_gc$(libext).la: $(OBJS_GC)
$(LIBTOOL_LINK) $(CC) -o $@ $(OBJS_GC) \
-rpath $(toolexeclibdir) \
-version-info $(LIBOBJC_GC_VERSION) $(extra_ldflags_libobjc)
#
# FIXME -- The following part does not fit in the libtool context.
# Libtool is supposed to [going to] be able to create a win 32 DLL
# without extra code but since I don't have a win machine to test
# if it already works, I leave the old code here.
#
libobjc_s.a: libobjc.la
mv libobjc.a libobjc_s.a
# Create a relocatable DLL
libobjc.dll: libobjc_s.a libobjc_entry.o
$(CC) -mdll -Wl,--base-file -Wl,libobjc.base \
-o libobjc.dll libobjc_s.a libobjc_entry.o -lkernel32
$(DLLTOOL) --dllname libobjc.dll --def $(srcdir)/libobjc.def \
--base-file libobjc.base --output-exp libobjc.exp
$(GCC_FOR_TARGET) -mdll -Wl,--base-file libobjc.base libobjc.exp \
-o libobjc.dll libobjc_s.a libobjc_entry.o -lkernel32
$(DLLTOOL) --dllname libobjc.dll --def $(srcdir)/libobjc.def \
--base-file libobjc.base --output-exp libobjc.exp
$(GCC_FOR_TARGET) libobjc.exp -mdll \
-o libobjc.dll libobjc_s.a libobjc_entry.o -lkernel32
$(DLLTOOL) --dllname libobjc.dll --def $(srcdir)/libobjc.def \
--output-lib libobjc.a
#
#
#
#
#
info:
dvi:
pdf:
html:
Makefile: Makefile.in config.status
$(SHELL) config.status
config.status: configure
rm -f config.cache
CONFIG_SITE=no-such-file CC='$(CC)' AR='$(AR)' CFLAGS='$(CFLAGS)' \
CPPFLAGS='$(CPPFLAGS)' $(SHELL) config.status --recheck
${srcdir}/configure: @MAINT@ configure.ac
rm -f config.cache
cd ${srcdir} && autoconf
install: install-libs install-headers
install-libs: installdirs
$(SHELL) $(multi_basedir)/mkinstalldirs $(DESTDIR)$(toolexeclibdir)
$(LIBTOOL_INSTALL) $(INSTALL) libobjc$(libext).la $(DESTDIR)$(toolexeclibdir);
if [ "$(OBJC_BOEHM_GC)" ]; then \
$(LIBTOOL_INSTALL) $(INSTALL) libobjc_gc$(libext).la \
$(DESTDIR)$(toolexeclibdir);\
fi
$(MULTIDO) $(FLAGS_TO_PASS) multi-do DO="$@"
@-$(LIBTOOL) --mode=finish $(DESTDIR)$(toolexeclibdir)
# Copy Objective C headers to installation include directory.
install-headers:
$(SHELL) $(multi_basedir)/mkinstalldirs $(DESTDIR)$(libsubdir)/$(includedirname)/objc
for file in $(OBJC_H); do \
realfile=$(srcdir)/objc/$${file}; \
$(INSTALL_DATA) $${realfile} $(DESTDIR)$(libsubdir)/$(includedirname)/objc; \
done
check uninstall install-strip dist installcheck installdirs:
mostlyclean:
-$(LIBTOOL_CLEAN) rm -f libobjc$(libext).la libobjc_gc$(libext).la *.lo
-rm -f runtime-info.h tmp-runtime.s *.o *.lo libobjc* xforward \
fflags *.aux *.cp *.dvi *.pdf *.fn *.info *.ky *.log *.pg \
*.toc *.tp *.vr *.html libobj.exp
@$(MULTICLEAN) multi-clean DO=mostlyclean
clean: mostlyclean
rm -f config.log
@$(MULTICLEAN) multi-clean DO=clean
distclean: clean
@$(MULTICLEAN) multi-clean DO=distclean
rm -f config.cache config.status Makefile configure
maintainer-clean realclean: distclean
.PHONY: mostlyclean clean distclean maintainer-clean all check uninstall \
install-strip dist installcheck installdirs
# Don't export variables to the environment, in order to not confuse
# configure.
.NOEXPORT:

42
contrib/libobjc/NXConstStr.m
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@ -1,42 +0,0 @@
/* Implementation of the NXConstantString class for Objective-C.
Copyright (C) 1995 Free Software Foundation, Inc.
Contributed by Pieter J. Schoenmakers <tiggr@es.ele.tue.nl>
This file is part of GCC.
GCC is free software; you can redistribute it and/or modify it
under the terms of the GNU General Public License as published by the
Free Software Foundation; either version 2, or (at your option) any
later version.
GCC is distributed in the hope that it will be useful, but WITHOUT
ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public
License for more details.
You should have received a copy of the GNU General Public License
along with GCC; see the file COPYING. If not, write to
the Free Software Foundation, 51 Franklin Street, Fifth Floor,
Boston, MA 02110-1301, USA. */
/* As a special exception, if you link this library with files
compiled with GCC to produce an executable, this does not cause
the resulting executable to be covered by the GNU General Public License.
This exception does not however invalidate any other reasons why
the executable file might be covered by the GNU General Public License. */
#include "objc/NXConstStr.h"
@implementation NXConstantString
-(const char *) cString
{
return (c_string);
} /* -cString */
-(unsigned int) length
{
return (len);
} /* -length */
@end

386
contrib/libobjc/Object.m
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@ -1,386 +0,0 @@
/* The implementation of class Object for Objective-C.
Copyright (C) 1993, 1994, 1995, 1997, 2002 Free Software Foundation, Inc.
This file is part of GCC.
GCC is free software; you can redistribute it and/or modify it
under the terms of the GNU General Public License as published by the
Free Software Foundation; either version 2, or (at your option) any
later version.
GCC is distributed in the hope that it will be useful, but WITHOUT
ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public
License for more details.
You should have received a copy of the GNU General Public License
along with GCC; see the file COPYING. If not, write to
the Free Software Foundation, 51 Franklin Street, Fifth Floor,
Boston, MA 02110-1301, USA. */
/* As a special exception, if you link this library with files compiled
with GCC to produce an executable, this does not cause the resulting
executable to be covered by the GNU General Public License. This
exception does not however invalidate any other reasons why the
executable file might be covered by the GNU General Public License. */
#include <stdarg.h>
#include "objc/Object.h"
#include "objc/Protocol.h"
#include "objc/objc-api.h"
extern int errno;
#define MAX_CLASS_NAME_LEN 256
@implementation Object
+ initialize
{
return self;
}
- init
{
return self;
}
+ new
{
return [[self alloc] init];
}
+ alloc
{
return class_create_instance(self);
}
- free
{
return object_dispose(self);
}
- copy
{
return [[self shallowCopy] deepen];
}
- shallowCopy
{
return object_copy(self);
}
- deepen
{
return self;
}
- deepCopy
{
return [self copy];
}
- (Class)class
{
return object_get_class(self);
}
- (Class)superClass
{
return object_get_super_class(self);
}
- (MetaClass)metaClass
{
return object_get_meta_class(self);
}
- (const char *)name
{
return object_get_class_name(self);
}
- self
{
return self;
}
- (unsigned int)hash
{
return (size_t)self;
}
- (BOOL)isEqual:anObject
{
return self==anObject;
}
- (int)compare:anotherObject;
{
if ([self isEqual:anotherObject])
return 0;
// Ordering objects by their address is pretty useless,
// so subclasses should override this is some useful way.
else if (self > anotherObject)
return 1;
else
return -1;
}
- (BOOL)isMetaClass
{
return NO;
}
- (BOOL)isClass
{
return object_is_class(self);
}
- (BOOL)isInstance
{
return object_is_instance(self);
}
- (BOOL)isKindOf:(Class)aClassObject
{
Class class;
for (class = self->isa; class!=Nil; class = class_get_super_class(class))
if (class==aClassObject)
return YES;
return NO;
}
- (BOOL)isMemberOf:(Class)aClassObject
{
return self->isa==aClassObject;
}
- (BOOL)isKindOfClassNamed:(const char *)aClassName
{
Class class;
if (aClassName!=NULL)
for (class = self->isa; class!=Nil; class = class_get_super_class(class))
if (!strcmp(class_get_class_name(class), aClassName))
return YES;
return NO;
}
- (BOOL)isMemberOfClassNamed:(const char *)aClassName
{
return ((aClassName!=NULL)
&&!strcmp(class_get_class_name(self->isa), aClassName));
}
+ (BOOL)instancesRespondTo:(SEL)aSel
{
return class_get_instance_method(self, aSel)!=METHOD_NULL;
}
- (BOOL)respondsTo:(SEL)aSel
{
return ((object_is_instance(self)
?class_get_instance_method(self->isa, aSel)
:class_get_class_method(self->isa, aSel))!=METHOD_NULL);
}
+ (IMP)instanceMethodFor:(SEL)aSel
{
return method_get_imp(class_get_instance_method(self, aSel));
}
// Indicates if the receiving class or instance conforms to the given protocol
// not usually overridden by subclasses
//
// Modified 9/5/94 to always search the class object's protocol list, rather
// than the meta class.
+ (BOOL) conformsTo: (Protocol*)aProtocol
{
size_t i;
struct objc_protocol_list* proto_list;
id parent;
for (proto_list = ((Class)self)->protocols;
proto_list; proto_list = proto_list->next)
{
for (i=0; i < proto_list->count; i++)
{
if ([proto_list->list[i] conformsTo: aProtocol])
return YES;
}
}
if ((parent = [self superClass]))
return [parent conformsTo: aProtocol];
else
return NO;
}
- (BOOL) conformsTo: (Protocol*)aProtocol
{
return [[self class] conformsTo:aProtocol];
}
- (IMP)methodFor:(SEL)aSel
{
return (method_get_imp(object_is_instance(self)
?class_get_instance_method(self->isa, aSel)
:class_get_class_method(self->isa, aSel)));
}
+ (struct objc_method_description *)descriptionForInstanceMethod:(SEL)aSel
{
return ((struct objc_method_description *)
class_get_instance_method(self, aSel));
}
- (struct objc_method_description *)descriptionForMethod:(SEL)aSel
{
return ((struct objc_method_description *)
(object_is_instance(self)
?class_get_instance_method(self->isa, aSel)
:class_get_class_method(self->isa, aSel)));
}
- perform:(SEL)aSel
{
IMP msg = objc_msg_lookup(self, aSel);
if (!msg)
return [self error:"invalid selector passed to %s", sel_get_name(_cmd)];
return (*msg)(self, aSel);
}
- perform:(SEL)aSel with:anObject
{
IMP msg = objc_msg_lookup(self, aSel);
if (!msg)
return [self error:"invalid selector passed to %s", sel_get_name(_cmd)];
return (*msg)(self, aSel, anObject);
}
- perform:(SEL)aSel with:anObject1 with:anObject2
{
IMP msg = objc_msg_lookup(self, aSel);
if (!msg)
return [self error:"invalid selector passed to %s", sel_get_name(_cmd)];
return (*msg)(self, aSel, anObject1, anObject2);
}
- (retval_t)forward:(SEL)aSel :(arglist_t)argFrame
{
(void) argFrame; /* UNUSED */
return (retval_t)[self doesNotRecognize: aSel];
}
- (retval_t)performv:(SEL)aSel :(arglist_t)argFrame
{
return objc_msg_sendv(self, aSel, argFrame);
}
+ poseAs:(Class)aClassObject
{
return class_pose_as(self, aClassObject);
}
- (Class)transmuteClassTo:(Class)aClassObject
{
if (object_is_instance(self))
if (class_is_class(aClassObject))
if (class_get_instance_size(aClassObject)==class_get_instance_size(isa))
if ([self isKindOf:aClassObject])
{
Class old_isa = isa;
isa = aClassObject;
return old_isa;
}
return nil;
}
- subclassResponsibility:(SEL)aSel
{
return [self error:"subclass should override %s", sel_get_name(aSel)];
}
- notImplemented:(SEL)aSel
{
return [self error:"method %s not implemented", sel_get_name(aSel)];
}
- shouldNotImplement:(SEL)aSel
{
return [self error:"%s should not implement %s",
object_get_class_name(self), sel_get_name(aSel)];
}
- doesNotRecognize:(SEL)aSel
{
return [self error:"%s does not recognize %s",
object_get_class_name(self), sel_get_name(aSel)];
}
- error:(const char *)aString, ...
{
#define FMT "error: %s (%s)\n%s\n"
char fmt[(strlen((char*)FMT)+strlen((char*)object_get_class_name(self))
+((aString!=NULL)?strlen((char*)aString):0)+8)];
va_list ap;
sprintf(fmt, FMT, object_get_class_name(self),
object_is_instance(self)?"instance":"class",
(aString!=NULL)?aString:"");
va_start(ap, aString);
objc_verror(self, OBJC_ERR_UNKNOWN, fmt, ap);
va_end(ap);
return nil;
#undef FMT
}
+ (int)version
{
return class_get_version(self);
}
+ setVersion:(int)aVersion
{
class_set_version(self, aVersion);
return self;
}
+ (int)streamVersion: (TypedStream*)aStream
{
if (aStream->mode == OBJC_READONLY)
return objc_get_stream_class_version (aStream, self);
else
return class_get_version (self);
}
// These are used to write or read the instance variables
// declared in this particular part of the object. Subclasses
// should extend these, by calling [super read/write: aStream]
// before doing their own archiving. These methods are private, in
// the sense that they should only be called from subclasses.
- read: (TypedStream*)aStream
{
(void) aStream; /* UNUSED */
// [super read: aStream];
return self;
}
- write: (TypedStream*)aStream
{
(void) aStream; /* UNUSED */
// [super write: aStream];
return self;
}
- awake
{
// [super awake];
return self;
}
@end

182
contrib/libobjc/Protocol.m
View File

@ -1,182 +0,0 @@
/* This file contains the implementation of class Protocol.
Copyright (C) 1993, 2004 Free Software Foundation, Inc.
This file is part of GCC.
GCC is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2, or (at your option)
any later version.
GCC is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with GCC; see the file COPYING. If not, write to
the Free Software Foundation, 51 Franklin Street, Fifth Floor,
Boston, MA 02110-1301, USA. */
/* As a special exception, if you link this library with files
compiled with GCC to produce an executable, this does not cause
the resulting executable to be covered by the GNU General Public License.
This exception does not however invalidate any other reasons why
the executable file might be covered by the GNU General Public License. */
#include "objc/Protocol.h"
#include "objc/objc-api.h"
/* Method description list */
struct objc_method_description_list {
int count;
struct objc_method_description list[1];
};
@implementation Protocol
{
@private
char *protocol_name;
struct objc_protocol_list *protocol_list;
struct objc_method_description_list *instance_methods, *class_methods;
}
/* Obtaining attributes intrinsic to the protocol */
- (const char *)name
{
return protocol_name;
}
/* Testing protocol conformance */
- (BOOL) conformsTo: (Protocol *)aProtocolObject
{
size_t i;
struct objc_protocol_list* proto_list;
if (aProtocolObject == nil)
return NO;
if (!strcmp(aProtocolObject->protocol_name, self->protocol_name))
return YES;
for (proto_list = protocol_list; proto_list; proto_list = proto_list->next)
{
for (i=0; i < proto_list->count; i++)
{
if ([proto_list->list[i] conformsTo: aProtocolObject])
return YES;
}
}
return NO;
}
/* Looking up information specific to a protocol */
- (struct objc_method_description *) descriptionForInstanceMethod:(SEL)aSel
{
int i;
struct objc_protocol_list* proto_list;
const char* name = sel_get_name (aSel);
struct objc_method_description *result;
if (instance_methods)
for (i = 0; i < instance_methods->count; i++)
{
if (!strcmp ((char*)instance_methods->list[i].name, name))
return &(instance_methods->list[i]);
}
for (proto_list = protocol_list; proto_list; proto_list = proto_list->next)
{
size_t j;
for (j=0; j < proto_list->count; j++)
{
if ((result = [proto_list->list[j]
descriptionForInstanceMethod: aSel]))
return result;
}
}
return NULL;
}
- (struct objc_method_description *) descriptionForClassMethod:(SEL)aSel;
{
int i;
struct objc_protocol_list* proto_list;
const char* name = sel_get_name (aSel);
struct objc_method_description *result;
if (class_methods)
for (i = 0; i < class_methods->count; i++)
{
if (!strcmp ((char*)class_methods->list[i].name, name))
return &(class_methods->list[i]);
}
for (proto_list = protocol_list; proto_list; proto_list = proto_list->next)
{
size_t j;
for (j=0; j < proto_list->count; j++)
{
if ((result = [proto_list->list[j]
descriptionForClassMethod: aSel]))
return result;
}
}
return NULL;
}
- (unsigned) hash
{
/* Compute a hash of the protocol_name; use the same hash algorithm
* that we use for class names; protocol names and class names are
* somewhat similar types of string spaces.
*/
int hash = 0, index;
for (index = 0; protocol_name[index] != '\0'; index++)
{
hash = (hash << 4) ^ (hash >> 28) ^ protocol_name[index];
}
hash = (hash ^ (hash >> 10) ^ (hash >> 20));
return hash;
}
/*
* Equality between formal protocols is only formal (nothing to do
* with actually checking the list of methods they have!). Two formal
* Protocols are equal if and only if they have the same name.
*
* Please note (for comparisons with other implementations) that
* checking the names is equivalent to checking that Protocol A
* conforms to Protocol B and Protocol B conforms to Protocol A,
* because this happens iff they have the same name. If they have
* different names, A conforms to B if and only if A includes B, but
* the situation where A includes B and B includes A is a circular
* dependency between Protocols which is forbidden by the compiler, so
* A conforms to B and B conforms to A with A and B having different
* names is an impossible case.
*/
- (BOOL) isEqual: (id)obj
{
if (obj == self)
return YES;
if ([obj isKindOf: [Protocol class]])
{
if (strcmp (protocol_name, ((Protocol *)obj)->protocol_name) == 0)
return YES;
}
return NO;
}
@end

104
contrib/libobjc/README
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@ -1,104 +0,0 @@
GNU Objective C notes
*********************
This document is to explain what has been done, and a little about how
specific features differ from other implementations. The runtime has
been completely rewritten in gcc 2.4. The earlier runtime had several
severe bugs and was rather incomplete. The compiler has had several
new features added as well.
This is not documentation for Objective C, it is usable to someone
who knows Objective C from somewhere else.
Runtime API functions
=====================
The runtime is modeled after the NeXT Objective C runtime. That is,
most functions have semantics as it is known from the NeXT. The
names, however, have changed. All runtime API functions have names
of lowercase letters and underscores as opposed to the
`traditional' mixed case names.
The runtime api functions are not documented as of now.
Someone offered to write it, and did it, but we were not allowed to
use it by his university (Very sad story). We have started writing
the documentation over again. This will be announced in appropriate
places when it becomes available.
Protocols
=========
Protocols are now fully supported. The semantics is exactly as on the
NeXT. There is a flag to specify how protocols should be typechecked
when adopted to classes. The normal typechecker requires that all
methods in a given protocol must be implemented in the class that
adopts it -- it is not enough to inherit them. The flag
`-Wno-protocol' causes it to allow inherited methods, while
`-Wprotocols' is the default which requires them defined.
+load
===========
This method, if defined, is called for each class and category
implementation when the class is loaded into the runtime. This method
is not inherited, and is thus not called for a subclass that doesn't
define it itself. Thus, each +load method is called exactly once by
the runtime. The runtime invocation of this method is thread safe.
+initialize
===========
This method, if defined, is called before any other instance or class
methods of that particular class. For the GNU runtime, this method is
not inherited, and is thus not called as initializer for a subclass that
doesn't define it itself. Thus, each +initialize method is called exactly
once by the runtime (or never if no methods of that particular class is
never called). It is wise to guard against multiple invocations anyway
to remain portable with the NeXT runtime. The runtime invocation of
this method is thread safe.
Passivation/Activation/Typedstreams
===================================
This is supported in the style of NeXT TypedStream's. Consult the
headerfile Typedstreams.h for api functions. I (Kresten) have
rewritten it in Objective C, but this implementation is not part of
2.4, it is available from the GNU Objective C prerelease archive.
There is one difference worth noting concerning objects stored with
objc_write_object_reference (aka NXWriteObjectReference). When these
are read back in, their object is not guaranteed to be available until
the `-awake' method is called in the object that requests that object.
To objc_read_object you must pass a pointer to an id, which is valid
after exit from the function calling it (like e.g. an instance
variable). In general, you should not use objects read in until the
-awake method is called.
Acknowledgements
================
The GNU Objective C team: Geoffrey Knauth <gsk@marble.com> (manager),
Tom Wood <wood@next.com> (compiler) and Kresten Krab Thorup
<krab@iesd.auc.dk> (runtime) would like to thank a some people for
participating in the development of the present GNU Objective C.
Paul Burchard <burchard@geom.umn.edu> and Andrew McCallum
<mccallum@cs.rochester.edu> has been very helpful debugging the
runtime. Eric Herring <herring@iesd.auc.dk> has been very helpful
cleaning up after the documentation-copyright disaster and is now
helping with the new documentation.
Steve Naroff <snaroff@next.com> and Richard Stallman
<rms@gnu.ai.mit.edu> has been very helpful with implementation details
in the compiler.
Bug Reports
===========
Please read the section `Submitting Bugreports' of the gcc manual
before you submit any bugs.

50
contrib/libobjc/README.threads
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@ -1,50 +0,0 @@
==============================================================================
README.threads - Wed Nov 29 15:16:24 EST 1995
------------------------------------------------------------------------------
Limited documentation is available in the THREADS file.
This version has been tested on Sun Solaris, SGI Irix, and Windows NT.
It should also work on any single threaded system.
Thanks go to the following people for help test and debug the library:
Scott Christley, scottc@ocbi.com
Andrew McCallum, mccallum@cs.rochester.edu
galen
gchunt@cs.rochester.edu
Any questions, bug reports, etc should be directed to:
Scott Christley, scottc@ocbi.com
Please do not bug Galen with email as he no longer supports the code.
==============================================================================
Changes from prior releases (in revered chronological order):
------------------------------------------------------------------------------
* Fixed bug in copy part of sarray_realloc. I had an < which should
have been <=. (Bug report from Scott).
------------------------------------------------------------------------------
* Support for DEC OSF/1 is definitely broken. My programs always
seg-fault when I link with libpthreads.a.
* Thread id's are no longer int's, but are instead of type
_objc_thread_t which is typedef'ed from a void *. An invalid thread
id is denoted by NULL and not -1 as before.
------------------------------------------------------------------------------
* Renamed thread-winnt.c to thread-win32.c to better reflect support
for the API on both Windows NT and Windows 95 platforms.
(Who knows, maybe even Win32s :-).
* Fixed bugs in Win32 support as per report from Scott Christley.
* Fixed bug in sarray_get as per report from Scott Christley.

377
contrib/libobjc/THREADS
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@ -1,377 +0,0 @@
This file describes in little detail the modifications to the
Objective-C runtime needed to make it thread safe.
First off, kudos to Galen Hunt who is the author of this great work.
If you have an comments or just want to know where to
send me money to express your undying gratitude for threading the
Objective-C runtime you can reach Galen at:
gchunt@cs.rochester.edu
Any questions, comments, bug reports, etc. should send email either to the
GCC bug account or to:
Scott Christley <scottc@net-community.com>
* Sarray Threading:
The most critical component of the Objective-C runtime is the sparse array
structure (sarray). Sarrays store object selectors and implementations.
Following in the tradition of the Objective-C runtime, my threading
support assumes that fast message dispatching is far more important
than *ANY* and *ALL* other operations. The message dispatching thus
uses *NO* locks on any kind. In fact, if you look in sarray.h, you
will notice that the message dispatching has not been modified.
Instead, I have modified the sarray management functions so that all
updates to the sarray data structure can be made in parallel will
message dispatching.
To support concurrent message dispatching, no dynamically allocated
sarray data structures are freed while more than one thread is
operational. Sarray data structures that are no longer in use are
kept in a linked list of garbage and are released whenever the program
is operating with a single thread. The programmer can also flush the
garbage list by calling sarray_remove_garbage when the programmer can
ensure that no message dispatching is taking place concurrently. The
amount of un-reclaimed sarray garbage should normally be extremely
small in a real program as sarray structures are freed only when using
the "poseAs" functionality and early in program initialization, which
normally occurs while the program is single threaded.
******************************************************************************
* Static Variables:
The following variables are either statically or globally defined. This list
does not include variables which are internal to implementation dependent
versions of thread-*.c.
The following threading designations are used:
SAFE : Implicitly thread safe.
SINGLE : Must only be used in single thread mode.
MUTEX : Protected by single global mutex objc_runtime_mutex.
UNUSED : Not used in the runtime.
Variable Name: Usage: Defined: Also used in:
=========================== ====== ============ =====================
__objc_class_hash MUTEX class.c
__objc_class_links_resolved UNUSED class.c runtime.h
__objc_class_number MUTEX class.c
__objc_dangling_categories UNUSED init.c
__objc_module_list MUTEX init.c
__objc_selector_array MUTEX selector.c
__objc_selector_hash MUTEX selector.c
__objc_selector_max_index MUTEX selector.c sendmsg.c runtime.h
__objc_selector_names MUTEX selector.c
__objc_thread_exit_status SAFE thread.c
__objc_uninstalled_dtable MUTEX sendmsg.c selector.c
_objc_load_callback SAFE init.c objc-api.h
_objc_lookup_class SAFE class.c objc-api.h
_objc_object_alloc SINGLE objects.c objc-api.h
_objc_object_copy SINGLE objects.c objc-api.h
_objc_object_dispose SINGLE objects.c objc-api.h
frwd_sel SAFE2 sendmsg.c
idxsize MUTEX sarray.c sendmsg.c sarray.h
initialize_sel SAFE2 sendmsg.c
narrays MUTEX sarray.c sendmsg.c sarray.h
nbuckets MUTEX sarray.c sendmsg.c sarray.h
nindices MUTEX sarray.c sarray.h
previous_constructors SAFE1 init.c
proto_class SAFE1 init.c
unclaimed_categories MUTEX init.c
unclaimed_proto_list MUTEX init.c
uninitialized_statics MUTEX init.c
Notes:
1) Initialized once in unithread mode.
2) Initialized value will always be same, guaranteed by lock on selector
hash table.
******************************************************************************
* Frontend/Backend design:
The design of the Objective-C runtime thread and mutex functions utilizes a
frontend/backend implementation.
The frontend, as characterized by the files thr.h and thr.c, is a set
of platform independent structures and functions which represent the
user interface. Objective-C programs should use these structures and
functions for their thread and mutex work if they wish to maintain a
high degree of portability across platforms.
The backend is composed of a file with the necessary code to map the ObjC
thread and mutex to a platform specific implementation. For example, the
file thr-solaris.c contains the implementation for Solaris.
If you are compiling libobjc as part of GCC, the thr-objc.c backend is
always used; this backend uses GCC's gthread code. The thread system
is automatically configured when GCC is configured. Important: make
sure you configure GCC using `--enable-threads' if you want threads !
If you want to compile libobjc standalone, then you would need to
modify the configure.in and makefiles for it; and you need to pick an
appropriate backend file for the target platform; you make this choice
by assigning the OBJC_THREAD_FILE make variable to the basename of the
backend file. For example, OBJC_THREAD_FILE=thr-posix would indicate
that the generic posix backend file, thr-posix.c, should be compiled
with the ObjC runtime library. If your platform does not support
threads then you should specify the OBJC_THREAD_FILE=thr-single
backend file to compile the ObjC runtime library without thread or
mutex support; note that programs which rely upon the ObjC thread and
mutex functions will compile and link correctly but attempting to
create a thread or mutex will result in an error.
It is questionable whether it is really necessary to have both a
frontend and backend function for all available functionality. On the
one hand, it provides a clear, consistent differentiation between what
is public and what is private with the downside of having the overhead
of multiple functions calls. For example, the function to have a
thread yield the processor is objc_thread_yield; in the current
implementation this produces a function call set:
objc_thread_yield() -> __objc_thread_yield() -> system yield function
This has two extra function calls over calling the platform specific function
explicitly, but the issue is whether only the overhead of a single function
is necessary.
objc_thread_yield() -> system yield function
This breaks the public/private dichotomy between the frontend/backend
for the sake of efficiency. It is possible to just use a preprocessor
define so as to eliminate the extra function call:
#define objc_thread_yield() __objc_thread_yield()
This has the undesirable effect that if objc_thread_yield is actually
turned into a function based upon future need; then ObjC programs which
access the thread functions would need to be recompiled versus just
being relinked.
******************************************************************************
* Threads:
The thread system attempts to create multiple threads using whatever
operating system or library thread support is available. It does
assume that all system functions are thread safe. Notably this means
that the system implementation of malloc and free must be thread safe.
If a system has multiple processors, the threads are configured for
full parallel processing.
* Backend initialization functions
__objc_init_thread_system(void), int
Initialize the thread subsystem. Called once by __objc_exec_class.
Return -1 if error otherwise return 0.
__objc_close_thread_system(void), int
Closes the thread subsystem, not currently guaranteed to be called.
Return -1 if error otherwise return 0.
*****
* Frontend thread functions
* User programs should use these functions.
objc_thread_detach(SEL selector, id object, id argument), objc_thread_t
Creates and detaches a new thread. The new thread starts by
sending the given selector with a single argument to the
given object.
objc_thread_set_priority(int priority), int
Sets a thread's relative priority within the program. Valid
options are:
OBJC_THREAD_INTERACTIVE_PRIORITY
OBJC_THREAD_BACKGROUND_PRIORITY
OBJC_THREAD_LOW_PRIORITY
objc_thread_get_priority(void), int
Query a thread's priority.
objc_thread_yield(void), void
Yields processor to another thread with equal or higher
priority. It is up to the system scheduler to determine if
the processor is taken or not.
objc_thread_exit(void), int
Terminates a thread. If this is the last thread executing
then the program will terminate.
objc_thread_id(void), int
Returns the current thread's id.
objc_thread_set_data(void *value), int
Set a pointer to the thread's local storage. Local storage is
thread specific.
objc_thread_get_data(void), void *
Returns the pointer to the thread's local storage.
*****
* Backend thread functions
* User programs should *NOT* directly call these functions.
__objc_thread_detach(void (*func)(void *arg), void *arg), objc_thread_t
Spawns a new thread executing func, called by objc_thread_detach.
Return NULL if error otherwise return thread id.
__objc_thread_set_priority(int priority), int
Set the thread's priority, called by objc_thread_set_priority.
Return -1 if error otherwise return 0.
__objc_thread_get_priority(void), int
Query a thread's priority, called by objc_thread_get_priority.
Return -1 if error otherwise return the priority.
__objc_thread_yield(void), void
Yields the processor, called by objc_thread_yield.
__objc_thread_exit(void), int
Terminates the thread, called by objc_thread_exit.
Return -1 if error otherwise function does not return.
__objc_thread_id(void), objc_thread_t
Returns the current thread's id, called by objc_thread_id.
Return -1 if error otherwise return thread id.
__objc_thread_set_data(void *value), int
Set pointer for thread local storage, called by objc_thread_set_data.
Returns -1 if error otherwise return 0.
__objc_thread_get_data(void), void *
Returns the pointer to the thread's local storage.
Returns NULL if error, called by objc_thread_get_data.
******************************************************************************
* Mutexes:
Mutexes can be locked recursively. Each locked mutex remembers
its owner (by thread id) and how many times it has been locked. The
last unlock on a mutex removes the system lock and allows other
threads to access the mutex.
*****
* Frontend mutex functions
* User programs should use these functions.
objc_mutex_allocate(void), objc_mutex_t
Allocates a new mutex. Mutex is initially unlocked.
Return NULL if error otherwise return mutex pointer.
objc_mutex_deallocate(objc_mutex_t mutex), int
Free a mutex. Before freeing the mutex, makes sure that no
one else is using it.
Return -1 if error otherwise return 0.
objc_mutex_lock(objc_mutex_t mutex), int
Locks a mutex. As mentioned earlier, the same thread may call
this routine repeatedly.
Return -1 if error otherwise return 0.
objc_mutex_trylock(objc_mutex_t mutex), int
Attempts to lock a mutex. If lock on mutex can be acquired
then function operates exactly as objc_mutex_lock.
Return -1 if failed to acquire lock otherwise return 0.
objc_mutex_unlock(objc_mutex_t mutex), int
Unlocks the mutex by one level. Other threads may not acquire
the mutex until this thread has released all locks on it.
Return -1 if error otherwise return 0.
*****
* Backend mutex functions
* User programs should *NOT* directly call these functions.
__objc_mutex_allocate(objc_mutex_t mutex), int
Allocates a new mutex, called by objc_mutex_allocate.
Return -1 if error otherwise return 0.
__objc_mutex_deallocate(objc_mutex_t mutex), int
Free a mutex, called by objc_mutex_deallocate.
Return -1 if error otherwise return 0.
__objc_mutex_lock(objc_mutex_t mutex), int
Locks a mutex, called by objc_mutex_lock.
Return -1 if error otherwise return 0.
__objc_mutex_trylock(objc_mutex_t mutex), int
Attempts to lock a mutex, called by objc_mutex_trylock.
Return -1 if failed to acquire lock or error otherwise return 0.
__objc_mutex_unlock(objc_mutex_t mutex), int
Unlocks the mutex, called by objc_mutex_unlock.
Return -1 if error otherwise return 0.
******************************************************************************
* Condition Mutexes:
Mutexes can be locked recursively. Each locked mutex remembers
its owner (by thread id) and how many times it has been locked. The
last unlock on a mutex removes the system lock and allows other
threads to access the mutex.
*
* Frontend condition mutex functions
* User programs should use these functions.
*
objc_condition_allocate(void), objc_condition_t
Allocate a condition mutex.
Return NULL if error otherwise return condition pointer.
objc_condition_deallocate(objc_condition_t condition), int
Deallocate a condition. Note that this includes an implicit
condition_broadcast to insure that waiting threads have the
opportunity to wake. It is legal to dealloc a condition only
if no other thread is/will be using it. Does NOT check for
other threads waiting but just wakes them up.
Return -1 if error otherwise return 0.
objc_condition_wait(objc_condition_t condition, objc_mutex_t mutex), int
Wait on the condition unlocking the mutex until objc_condition_signal()
or objc_condition_broadcast() are called for the same condition. The
given mutex *must* have the depth 1 so that it can be unlocked
here, for someone else can lock it and signal/broadcast the condition.
The mutex is used to lock access to the shared data that make up the
"condition" predicate.
Return -1 if error otherwise return 0.
objc_condition_broadcast(objc_condition_t condition), int
Wake up all threads waiting on this condition. It is recommended that
the called would lock the same mutex as the threads in
objc_condition_wait before changing the "condition predicate"
and make this call and unlock it right away after this call.
Return -1 if error otherwise return 0.
objc_condition_signal(objc_condition_t condition), int
Wake up one thread waiting on this condition.
Return -1 if error otherwise return 0.
*
* Backend condition mutex functions
* User programs should *NOT* directly call these functions.
*
__objc_condition_allocate(objc_condition_t condition), int
Allocate a condition mutex, called by objc_condition_allocate.
Return -1 if error otherwise return 0.
__objc_condition_deallocate(objc_condition_t condition), int
Deallocate a condition, called by objc_condition_deallocate.
Return -1 if error otherwise return 0.
__objc_condition_wait(objc_condition_t condition, objc_mutex_t mutex), int
Wait on the condition, called by objc_condition_wait.
Return -1 if error otherwise return 0 when condition is met.
__objc_condition_broadcast(objc_condition_t condition), int
Wake up all threads waiting on this condition.
Called by objc_condition_broadcast.
Return -1 if error otherwise return 0.
__objc_condition_signal(objc_condition_t condition), int
Wake up one thread waiting on this condition.
Called by objc_condition_signal.
Return -1 if error otherwise return 0.

23
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This readme refers to the file thr-mach.c.
Under mach, thread priorities are kinda strange-- any given thread has
a MAXIMUM priority and a BASE priority. The BASE priority is the
current priority of the thread and the MAXIMUM is the maximum possible
priority the thread can assume. The developer can lower, but never
raise the maximum priority.
The gcc concept of thread priorities is that they run at one of three
levels; interactive, background, and low.
Under mach, this is translated to:
interactive -- set priority to maximum
background -- set priority to 2/3 of maximum
low -- set priority to 1/3 of maximum
This means that it is possible for a thread with the priority of
interactive to actually run at a lower priority than another thread
with a background, or even low, priority if the developer has modified
the maximum priority.

24
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@ -1,24 +0,0 @@
dnl Copyright 1994, 1995, 1996, 1997, 1998, 1999, 2001, 2004
dnl Free Software Foundation, Inc.
dnl This file is free software; the Free Software Foundation
dnl gives unlimited permission to copy and/or distribute it,
dnl with or without modifications, as long as this notice is preserved.
dnl This program is distributed in the hope that it will be useful,
dnl but WITHOUT ANY WARRANTY, to the extent permitted by law; without
dnl even the implied warranty of MERCHANTABILITY or FITNESS FOR A
dnl PARTICULAR PURPOSE.
m4_include(../config/acx.m4)
m4_include(../config/no-executables.m4)
m4_include(../libtool.m4)
dnl The lines below arrange for aclocal not to bring an installed
dnl libtool.m4 into aclocal.m4, while still arranging for automake to
dnl add a definition of LIBTOOL to Makefile.in.
ifelse(yes,no,[
AC_DEFUN([AM_PROG_LIBTOOL],)
AC_DEFUN([AC_LIBTOOL_DLOPEN],)
AC_DEFUN([AC_LIBLTDL_CONVENIENCE],)
AC_SUBST(LIBTOOL)
])

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# generated automatically by aclocal 1.9.6 -*- Autoconf -*-
# Copyright (C) 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004,
# 2005 Free Software Foundation, Inc.
# This file is free software; the Free Software Foundation
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# with or without modifications, as long as this notice is preserved.
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contrib/libobjc/archive.c
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703
contrib/libobjc/class.c
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/* GNU Objective C Runtime class related functions
Copyright (C) 1993, 1995, 1996, 1997, 2001, 2002
Free Software Foundation, Inc.
Contributed by Kresten Krab Thorup and Dennis Glatting.
Lock-free class table code designed and written from scratch by
Nicola Pero, 2001.
This file is part of GCC.
GCC is free software; you can redistribute it and/or modify it under the
terms of the GNU General Public License as published by the Free Software
Foundation; either version 2, or (at your option) any later version.
GCC is distributed in the hope that it will be useful, but WITHOUT ANY
WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
details.
You should have received a copy of the GNU General Public License along with
GCC; see the file COPYING. If not, write to the Free Software
Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. */
/* As a special exception, if you link this library with files compiled with
GCC to produce an executable, this does not cause the resulting executable
to be covered by the GNU General Public License. This exception does not
however invalidate any other reasons why the executable file might be
covered by the GNU General Public License. */
/*
The code in this file critically affects class method invocation
speed. This long preamble comment explains why, and the issues
involved.
One of the traditional weaknesses of the GNU Objective-C runtime is
that class method invocations are slow. The reason is that when you
write
array = [NSArray new];
this gets basically compiled into the equivalent of
array = [(objc_get_class ("NSArray")) new];
objc_get_class returns the class pointer corresponding to the string
`NSArray'; and because of the lookup, the operation is more
complicated and slow than a simple instance method invocation.
Most high performance Objective-C code (using the GNU Objc runtime)
I had the opportunity to read (or write) work around this problem by
caching the class pointer:
Class arrayClass = [NSArray class];
... later on ...
array = [arrayClass new];
array = [arrayClass new];
array = [arrayClass new];
In this case, you always perform a class lookup (the first one), but
then all the [arrayClass new] methods run exactly as fast as an
instance method invocation. It helps if you have many class method
invocations to the same class.
The long-term solution to this problem would be to modify the
compiler to output tables of class pointers corresponding to all the
class method invocations, and to add code to the runtime to update
these tables - that should in the end allow class method invocations
to perform precisely as fast as instance method invocations, because
no class lookup would be involved. I think the Apple Objective-C
runtime uses this technique. Doing this involves synchronized
modifications in the runtime and in the compiler.
As a first medicine to the problem, I [NP] have redesigned and
rewritten the way the runtime is performing class lookup. This
doesn't give as much speed as the other (definitive) approach, but
at least a class method invocation now takes approximately 4.5 times
an instance method invocation on my machine (it would take approx 12
times before the rewriting), which is a lot better.
One of the main reason the new class lookup is so faster is because
I implemented it in a way that can safely run multithreaded without
using locks - a so-called `lock-free' data structure. The atomic
operation is pointer assignment. The reason why in this problem
lock-free data structures work so well is that you never remove
classes from the table - and the difficult thing with lock-free data
structures is freeing data when is removed from the structures. */
#include "objc/runtime.h" /* the kitchen sink */
#include "objc/sarray.h"
#include "objc/objc.h"
#include "objc/objc-api.h"
#include "objc/thr.h"
/* We use a table which maps a class name to the corresponding class
* pointer. The first part of this file defines this table, and
* functions to do basic operations on the table. The second part of
* the file implements some higher level Objective-C functionality for
* classes by using the functions provided in the first part to manage
* the table. */
/**
** Class Table Internals
**/
/* A node holding a class */
typedef struct class_node
{
struct class_node *next; /* Pointer to next entry on the list.
NULL indicates end of list. */
const char *name; /* The class name string */
int length; /* The class name string length */
Class pointer; /* The Class pointer */
} *class_node_ptr;
/* A table containing classes is a class_node_ptr (pointing to the
first entry in the table - if it is NULL, then the table is
empty). */
/* We have 1024 tables. Each table contains all class names which
have the same hash (which is a number between 0 and 1023). To look
up a class_name, we compute its hash, and get the corresponding
table. Once we have the table, we simply compare strings directly
till we find the one which we want (using the length first). The
number of tables is quite big on purpose (a normal big application
has less than 1000 classes), so that you shouldn't normally get any
collisions, and get away with a single comparison (which we can't
avoid since we need to know that you have got the right thing). */
#define CLASS_TABLE_SIZE 1024
#define CLASS_TABLE_MASK 1023
static class_node_ptr class_table_array[CLASS_TABLE_SIZE];
/* The table writing mutex - we lock on writing to avoid conflicts
between different writers, but we read without locks. That is
possible because we assume pointer assignment to be an atomic
operation. */
static objc_mutex_t __class_table_lock = NULL;
/* CLASS_TABLE_HASH is how we compute the hash of a class name. It is
a macro - *not* a function - arguments *are* modified directly.
INDEX should be a variable holding an int;
HASH should be a variable holding an int;
CLASS_NAME should be a variable holding a (char *) to the class_name.
After the macro is executed, INDEX contains the length of the
string, and HASH the computed hash of the string; CLASS_NAME is
untouched. */
#define CLASS_TABLE_HASH(INDEX, HASH, CLASS_NAME) \
HASH = 0; \
for (INDEX = 0; CLASS_NAME[INDEX] != '\0'; INDEX++) \
{ \
HASH = (HASH << 4) ^ (HASH >> 28) ^ CLASS_NAME[INDEX]; \
} \
\
HASH = (HASH ^ (HASH >> 10) ^ (HASH >> 20)) & CLASS_TABLE_MASK;
/* Setup the table. */
static void
class_table_setup (void)
{
/* Start - nothing in the table. */
memset (class_table_array, 0, sizeof (class_node_ptr) * CLASS_TABLE_SIZE);
/* The table writing mutex. */
__class_table_lock = objc_mutex_allocate ();
}
/* Insert a class in the table (used when a new class is registered). */
static void
class_table_insert (const char *class_name, Class class_pointer)
{
int hash, length;
class_node_ptr new_node;
/* Find out the class name's hash and length. */
CLASS_TABLE_HASH (length, hash, class_name);
/* Prepare the new node holding the class. */
new_node = objc_malloc (sizeof (struct class_node));
new_node->name = class_name;
new_node->length = length;
new_node->pointer = class_pointer;
/* Lock the table for modifications. */
objc_mutex_lock (__class_table_lock);
/* Insert the new node in the table at the beginning of the table at
class_table_array[hash]. */
new_node->next = class_table_array[hash];
class_table_array[hash] = new_node;
objc_mutex_unlock (__class_table_lock);
}
/* Replace a class in the table (used only by poseAs:). */
static void
class_table_replace (Class old_class_pointer, Class new_class_pointer)
{
int hash;
class_node_ptr node;
objc_mutex_lock (__class_table_lock);
hash = 0;
node = class_table_array[hash];
while (hash < CLASS_TABLE_SIZE)
{
if (node == NULL)
{
hash++;
if (hash < CLASS_TABLE_SIZE)
{
node = class_table_array[hash];
}
}
else
{
Class class1 = node->pointer;
if (class1 == old_class_pointer)
{
node->pointer = new_class_pointer;
}
node = node->next;
}
}
objc_mutex_unlock (__class_table_lock);
}
/* Get a class from the table. This does not need mutex protection.
Currently, this function is called each time you call a static
method, this is why it must be very fast. */
static inline Class
class_table_get_safe (const char *class_name)
{
class_node_ptr node;
int length, hash;
/* Compute length and hash. */
CLASS_TABLE_HASH (length, hash, class_name);
node = class_table_array[hash];
if (node != NULL)
{
do
{
if (node->length == length)
{
/* Compare the class names. */
int i;
for (i = 0; i < length; i++)
{
if ((node->name)[i] != class_name[i])
{
break;
}
}
if (i == length)
{
/* They are equal! */
return node->pointer;
}
}
}
while ((node = node->next) != NULL);
}
return Nil;
}
/* Enumerate over the class table. */
struct class_table_enumerator
{
int hash;
class_node_ptr node;
};
static Class
class_table_next (struct class_table_enumerator **e)
{
struct class_table_enumerator *enumerator = *e;
class_node_ptr next;
if (enumerator == NULL)
{
*e = objc_malloc (sizeof (struct class_table_enumerator));
enumerator = *e;
enumerator->hash = 0;
enumerator->node = NULL;
next = class_table_array[enumerator->hash];
}
else
{
next = enumerator->node->next;
}
if (next != NULL)
{
enumerator->node = next;
return enumerator->node->pointer;
}
else
{
enumerator->hash++;
while (enumerator->hash < CLASS_TABLE_SIZE)
{
next = class_table_array[enumerator->hash];
if (next != NULL)
{
enumerator->node = next;
return enumerator->node->pointer;
}
enumerator->hash++;
}
/* Ok - table finished - done. */
objc_free (enumerator);
return Nil;
}
}
#if 0 /* DEBUGGING FUNCTIONS */
/* Debugging function - print the class table. */
void
class_table_print (void)
{
int i;
for (i = 0; i < CLASS_TABLE_SIZE; i++)
{
class_node_ptr node;
printf ("%d:\n", i);
node = class_table_array[i];
while (node != NULL)
{
printf ("\t%s\n", node->name);
node = node->next;
}
}
}
/* Debugging function - print an histogram of number of classes in
function of hash key values. Useful to evaluate the hash function
in real cases. */
void
class_table_print_histogram (void)
{
int i, j;
int counter = 0;
for (i = 0; i < CLASS_TABLE_SIZE; i++)
{
class_node_ptr node;
node = class_table_array[i];
while (node != NULL)
{
counter++;
node = node->next;
}
if (((i + 1) % 50) == 0)
{
printf ("%4d:", i + 1);
for (j = 0; j < counter; j++)
{
printf ("X");
}
printf ("\n");
counter = 0;
}
}
printf ("%4d:", i + 1);
for (j = 0; j < counter; j++)
{
printf ("X");
}
printf ("\n");
}
#endif /* DEBUGGING FUNCTIONS */
/**
** Objective-C runtime functions
**/
/* From now on, the only access to the class table data structure
should be via the class_table_* functions. */
/* This is a hook which is called by objc_get_class and
objc_lookup_class if the runtime is not able to find the class.
This may e.g. try to load in the class using dynamic loading. */
Class (*_objc_lookup_class) (const char *name) = 0; /* !T:SAFE */
/* True when class links has been resolved. */
BOOL __objc_class_links_resolved = NO; /* !T:UNUSED */
void
__objc_init_class_tables (void)
{
/* Allocate the class hash table. */
if (__class_table_lock)
return;
objc_mutex_lock (__objc_runtime_mutex);
class_table_setup ();
objc_mutex_unlock (__objc_runtime_mutex);
}
/* This function adds a class to the class hash table, and assigns the
class a number, unless it's already known. */
void
__objc_add_class_to_hash (Class class)
{
Class h_class;
objc_mutex_lock (__objc_runtime_mutex);
/* Make sure the table is there. */
assert (__class_table_lock);
/* Make sure it's not a meta class. */
assert (CLS_ISCLASS (class));
/* Check to see if the class is already in the hash table. */
h_class = class_table_get_safe (class->name);
if (! h_class)
{
/* The class isn't in the hash table. Add the class and assign a class
number. */
static unsigned int class_number = 1;
CLS_SETNUMBER (class, class_number);
CLS_SETNUMBER (class->class_pointer, class_number);
++class_number;
class_table_insert (class->name, class);
}
objc_mutex_unlock (__objc_runtime_mutex);
}
/* Get the class object for the class named NAME. If NAME does not
identify a known class, the hook _objc_lookup_class is called. If
this fails, nil is returned. */
Class
objc_lookup_class (const char *name)
{
Class class;
class = class_table_get_safe (name);
if (class)
return class;
if (_objc_lookup_class)
return (*_objc_lookup_class) (name);
else
return 0;
}
/* Get the class object for the class named NAME. If NAME does not
identify a known class, the hook _objc_lookup_class is called. If
this fails, an error message is issued and the system aborts. */
Class
objc_get_class (const char *name)
{
Class class;
class = class_table_get_safe (name);
if (class)
return class;
if (_objc_lookup_class)
class = (*_objc_lookup_class) (name);
if (class)
return class;
objc_error (nil, OBJC_ERR_BAD_CLASS,
"objc runtime: cannot find class %s\n", name);
return 0;
}
MetaClass
objc_get_meta_class (const char *name)
{
return objc_get_class (name)->class_pointer;
}
/* This function provides a way to enumerate all the classes in the
executable. Pass *ENUM_STATE == NULL to start the enumeration. The
function will return 0 when there are no more classes.
For example:
id class;
void *es = NULL;
while ((class = objc_next_class (&es)))
... do something with class;
*/
Class
objc_next_class (void **enum_state)
{
Class class;
objc_mutex_lock (__objc_runtime_mutex);
/* Make sure the table is there. */
assert (__class_table_lock);
class = class_table_next ((struct class_table_enumerator **) enum_state);
objc_mutex_unlock (__objc_runtime_mutex);
return class;
}
/* Resolve super/subclass links for all classes. The only thing we
can be sure of is that the class_pointer for class objects point to
the right meta class objects. */
void
__objc_resolve_class_links (void)
{
struct class_table_enumerator *es = NULL;
Class object_class = objc_get_class ("Object");
Class class1;
assert (object_class);
objc_mutex_lock (__objc_runtime_mutex);
/* Assign subclass links. */
while ((class1 = class_table_next (&es)))
{
/* Make sure we have what we think we have. */
assert (CLS_ISCLASS (class1));
assert (CLS_ISMETA (class1->class_pointer));
/* The class_pointer of all meta classes point to Object's meta
class. */
class1->class_pointer->class_pointer = object_class->class_pointer;
if (! CLS_ISRESOLV (class1))
{
CLS_SETRESOLV (class1);
CLS_SETRESOLV (class1->class_pointer);
if (class1->super_class)
{
Class a_super_class
= objc_get_class ((char *) class1->super_class);
assert (a_super_class);
DEBUG_PRINTF ("making class connections for: %s\n",
class1->name);
/* Assign subclass links for superclass. */
class1->sibling_class = a_super_class->subclass_list;
a_super_class->subclass_list = class1;
/* Assign subclass links for meta class of superclass. */
if (a_super_class->class_pointer)
{
class1->class_pointer->sibling_class
= a_super_class->class_pointer->subclass_list;
a_super_class->class_pointer->subclass_list
= class1->class_pointer;
}
}
else /* A root class, make its meta object be a subclass of
Object. */
{
class1->class_pointer->sibling_class
= object_class->subclass_list;
object_class->subclass_list = class1->class_pointer;
}
}
}
/* Assign superclass links. */
es = NULL;
while ((class1 = class_table_next (&es)))
{
Class sub_class;
for (sub_class = class1->subclass_list; sub_class;
sub_class = sub_class->sibling_class)
{
sub_class->super_class = class1;
if (CLS_ISCLASS (sub_class))
sub_class->class_pointer->super_class = class1->class_pointer;
}
}
objc_mutex_unlock (__objc_runtime_mutex);
}
#define CLASSOF(c) ((c)->class_pointer)
Class
class_pose_as (Class impostor, Class super_class)
{
if (! CLS_ISRESOLV (impostor))
__objc_resolve_class_links ();
/* Preconditions */
assert (impostor);
assert (super_class);
assert (impostor->super_class == super_class);
assert (CLS_ISCLASS (impostor));
assert (CLS_ISCLASS (super_class));
assert (impostor->instance_size == super_class->instance_size);
{
Class *subclass = &(super_class->subclass_list);
/* Move subclasses of super_class to impostor. */
while (*subclass)
{
Class nextSub = (*subclass)->sibling_class;
if (*subclass != impostor)
{
Class sub = *subclass;
/* Classes */
sub->sibling_class = impostor->subclass_list;
sub->super_class = impostor;
impostor->subclass_list = sub;
/* It will happen that SUB is not a class object if it is
the top of the meta class hierarchy chain (root
meta-class objects inherit their class object). If
that is the case... don't mess with the meta-meta
class. */
if (CLS_ISCLASS (sub))
{
/* Meta classes */
CLASSOF (sub)->sibling_class =
CLASSOF (impostor)->subclass_list;
CLASSOF (sub)->super_class = CLASSOF (impostor);
CLASSOF (impostor)->subclass_list = CLASSOF (sub);
}
}
*subclass = nextSub;
}
/* Set subclasses of superclass to be impostor only. */
super_class->subclass_list = impostor;
CLASSOF (super_class)->subclass_list = CLASSOF (impostor);
/* Set impostor to have no sibling classes. */
impostor->sibling_class = 0;
CLASSOF (impostor)->sibling_class = 0;
}
/* Check relationship of impostor and super_class is kept. */
assert (impostor->super_class == super_class);
assert (CLASSOF (impostor)->super_class == CLASSOF (super_class));
/* This is how to update the lookup table. Regardless of what the
keys of the hashtable is, change all values that are superclass
into impostor. */
objc_mutex_lock (__objc_runtime_mutex);
class_table_replace (super_class, impostor);
objc_mutex_unlock (__objc_runtime_mutex);
/* Next, we update the dispatch tables... */
__objc_update_dispatch_table_for_class (CLASSOF (impostor));
__objc_update_dispatch_table_for_class (impostor);
return impostor;
}

58
contrib/libobjc/config.h.in
View File

@ -1,58 +0,0 @@
/* config.h.in. Generated from configure.ac by autoheader. */
/* Define if the compiler has a thread header that is non single. */
#undef HAVE_GTHR_DEFAULT
/* Define to 1 if you have the <inttypes.h> header file. */
#undef HAVE_INTTYPES_H
/* Define to 1 if you have the <memory.h> header file. */
#undef HAVE_MEMORY_H
/* Define to 1 if you have the <sched.h> header file. */
#undef HAVE_SCHED_H
/* Define to 1 if you have the <stdint.h> header file. */
#undef HAVE_STDINT_H
/* Define to 1 if you have the <stdlib.h> header file. */
#undef HAVE_STDLIB_H
/* Define to 1 if you have the <strings.h> header file. */
#undef HAVE_STRINGS_H
/* Define to 1 if you have the <string.h> header file. */
#undef HAVE_STRING_H
/* Define to 1 if you have the <sys/stat.h> header file. */
#undef HAVE_SYS_STAT_H
/* Define to 1 if you have the <sys/types.h> header file. */
#undef HAVE_SYS_TYPES_H
/* Define to 1 if you have the <unistd.h> header file. */
#undef HAVE_UNISTD_H
/* Define to 1 if your C compiler doesn't accept -c and -o together. */
#undef NO_MINUS_C_MINUS_O
/* Define to the address where bug reports for this package should be sent. */
#undef PACKAGE_BUGREPORT
/* Define to the full name of this package. */
#undef PACKAGE_NAME
/* Define to the full name and version of this package. */
#undef PACKAGE_STRING
/* Define to the one symbol short name of this package. */
#undef PACKAGE_TARNAME
/* Define to the version of this package. */
#undef PACKAGE_VERSION
/* Define if the compiler is configured for setjmp/longjmp exceptions. */
#undef SJLJ_EXCEPTIONS
/* Define to 1 if you have the ANSI C header files. */
#undef STDC_HEADERS

6595
contrib/libobjc/configure vendored
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File diff suppressed because it is too large Load Diff

296
contrib/libobjc/configure.ac
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@ -1,296 +0,0 @@
# Process this file with autoconf to produce a configure script.
# Copyright 1994, 1995, 1996, 1997, 1998, 1999, 2001, 2002, 2003, 2004
# 2005, 2006 Free Software Foundation, Inc.
# Originally contributed by Dave Love (d.love@dl.ac.uk).
#
#This file is part of GCC.
#
#GCC is free software; you can redistribute it and/or modify
#it under the terms of the GNU General Public License as published by
#the Free Software Foundation; either version 2, or (at your option)
#any later version.
#
#GCC is distributed in the hope that it will be useful,
#but WITHOUT ANY WARRANTY; without even the implied warranty of
#MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
#GNU General Public License for more details.
#
#You should have received a copy of the GNU General Public License
#along with GCC; see the file COPYING. If not, write to
#the Free Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA
#02110-1301, USA.
AC_PREREQ(2.59)
AC_INIT(package-unused, version-unused,, libobjc)
AC_CONFIG_SRCDIR([objc/objc.h])
GCC_TOPLEV_SUBDIRS
# We need the following definitions because AC_PROG_LIBTOOL relies on them
PACKAGE=libobjc
# Version is pulled out to make it a bit easier to change using sed.
VERSION=2:0:0
AC_SUBST(VERSION)
# This works around the fact that libtool configuration may change LD
# for this particular configuration, but some shells, instead of
# keeping the changes in LD private, export them just because LD is
# exported.
ORIGINAL_LD_FOR_MULTILIBS=$LD
# -------
# Options
# -------
# We use these options to decide which functions to include.
AC_ARG_WITH(target-subdir,
[ --with-target-subdir=SUBDIR
configuring in a subdirectory])
AC_ARG_WITH(cross-host,
[ --with-cross-host=HOST configuring with a cross compiler])
AC_MSG_CHECKING([for --enable-version-specific-runtime-libs])
AC_ARG_ENABLE(version-specific-runtime-libs,
[ --enable-version-specific-runtime-libs Specify that runtime libraries should be installed in a compiler-specific directory ],
[case "$enableval" in
yes) version_specific_libs=yes ;;
no) version_specific_libs=no ;;
*) AC_MSG_ERROR([Unknown argument to enable/disable version-specific libs]);;
esac],
[version_specific_libs=no])
AC_MSG_RESULT($version_specific_libs)
AC_ARG_ENABLE(objc-gc,
[ --enable-objc-gc enable the use of Boehm's garbage collector with
the GNU Objective-C runtime.],
[case $enable_objc_gc in
no)
OBJC_BOEHM_GC=''
OBJC_BOEHM_GC_INCLUDES=''
;;
*)
OBJC_BOEHM_GC=libobjc_gc.la
OBJC_BOEHM_GC_INCLUDES='-I$(top_srcdir)/../boehm-gc/include -I../boehm-gc/include'
;;
esac],
[OBJC_BOEHM_GC=''; OBJC_BOEHM_GC_INCLUDES=''])
AC_SUBST(OBJC_BOEHM_GC)
AC_SUBST(OBJC_BOEHM_GC_INCLUDES)
# -----------
# Directories
# -----------
# Find the rest of the source tree framework.
AM_ENABLE_MULTILIB(, ..)
AC_CANONICAL_SYSTEM
ACX_NONCANONICAL_TARGET
# Export source directory.
# These need to be absolute paths, yet at the same time need to
# canonicalize only relative paths, because then amd will not unmount
# drives. Thus the use of PWDCMD: set it to 'pawd' or 'amq -w' if using amd.
case $srcdir in
[\\/$]* | ?:[\\/]*) glibcpp_srcdir=${srcdir} ;;
*) glibcpp_srcdir=`cd "$srcdir" && ${PWDCMD-pwd} || echo "$srcdir"` ;;
esac
AC_SUBST(glibcpp_srcdir)
# Calculate toolexeclibdir
# Also toolexecdir, though it's only used in toolexeclibdir
case ${version_specific_libs} in
yes)
# Need the gcc compiler version to know where to install libraries
# and header files if --enable-version-specific-runtime-libs option
# is selected.
toolexecdir='$(libdir)/gcc/$(target_noncanonical)'
toolexeclibdir='$(toolexecdir)/$(gcc_version)$(MULTISUBDIR)'
;;
no)
if test -n "$with_cross_host" &&
test x"$with_cross_host" != x"no"; then
# Install a library built with a cross compiler in tooldir, not libdir.
toolexecdir='$(exec_prefix)/$(target_noncanonical)'
toolexeclibdir='$(toolexecdir)/lib'
else
toolexecdir='$(libdir)/gcc-lib/$(target_noncanonical)'
toolexeclibdir='$(libdir)'
fi
multi_os_directory=`$CC -print-multi-os-directory`
case $multi_os_directory in
.) ;; # Avoid trailing /.
*) toolexeclibdir=$toolexeclibdir/$multi_os_directory ;;
esac
;;
esac
AC_SUBST(toolexecdir)
AC_SUBST(toolexeclibdir)
# Figure out if we want to name the include directory and the
# library name changes differently.
includedirname=include
libext=
case "${host}" in
*-darwin*)
# Darwin is the only target so far that needs a different include directory.
includedirname=include-gnu-runtime
libext=-gnu
;;
esac
AC_SUBST(includedirname)
AC_SUBST(libext)
AC_CONFIG_HEADERS(config.h)
# --------
# Programs
# --------
GCC_NO_EXECUTABLES
# We must force CC to /not/ be a precious variable; otherwise
# the wrong, non-multilib-adjusted value will be used in multilibs.
# As a side effect, we have to subst CFLAGS ourselves.
m4_rename([_AC_ARG_VAR_PRECIOUS],[real_PRECIOUS])
m4_define([_AC_ARG_VAR_PRECIOUS],[])
AC_PROG_CC
m4_rename([real_PRECIOUS],[_AC_ARG_VAR_PRECIOUS])
# extra LD Flags which are required for targets
case "${host}" in
*-darwin*)
# Darwin needs -single_module when linking libobjc
extra_ldflags_libobjc=-Wl,-single_module
;;
esac
AC_SUBST(extra_ldflags_libobjc)
AC_SUBST(CFLAGS)
AC_CHECK_TOOL(AS, as)
AC_CHECK_TOOL(AR, ar)
AC_CHECK_TOOL(RANLIB, ranlib, :)
AC_PROG_INSTALL
AM_MAINTAINER_MODE
# Enable Win32 DLL on MS Windows - FIXME
AC_LIBTOOL_WIN32_DLL
AC_PROG_LIBTOOL
AM_PROG_CC_C_O
AC_PROG_MAKE_SET
# -------
# Headers
# -------
# Sanity check for the cross-compilation case:
AC_CHECK_HEADER(stdio.h,:,
[AC_MSG_ERROR([Can't find stdio.h.
You must have a usable C system for the target already installed, at least
including headers and, preferably, the library, before you can configure
the Objective C runtime system. If necessary, install gcc now with
\`LANGUAGES=c', then the target library, then build with \`LANGUAGES=objc'.])])
AC_HEADER_STDC
AC_CHECK_HEADERS(sched.h)
# -----------
# Miscellanea
# -----------
AC_MSG_CHECKING([for thread model used by GCC])
target_thread_file=`$CC -v 2>&1 | sed -n 's/^Thread model: //p'`
AC_MSG_RESULT([$target_thread_file])
if test $target_thread_file != single; then
AC_DEFINE(HAVE_GTHR_DEFAULT, 1,
[Define if the compiler has a thread header that is non single.])
fi
AC_MSG_CHECKING([for exception model to use])
AC_LANG_PUSH(C)
AC_ARG_ENABLE(sjlj-exceptions,
AS_HELP_STRING([--enable-sjlj-exceptions],
[force use of builtin_setjmp for exceptions]),
[:],
[dnl Botheration. Now we've got to detect the exception model.
dnl Link tests against libgcc.a are problematic since -- at least
dnl as of this writing -- we've not been given proper -L bits for
dnl single-tree newlib and libgloss.
dnl
dnl This is what AC_TRY_COMPILE would do if it didn't delete the
dnl conftest files before we got a change to grep them first.
cat > conftest.$ac_ext << EOF
[#]line __oline__ "configure"
@interface Frob
@end
@implementation Frob
@end
int proc();
int foo()
{
@try {
return proc();
}
@catch (Frob* ex) {
return 0;
}
}
EOF
old_CFLAGS="$CFLAGS"
dnl work around that we don't have Objective-C support in autoconf
CFLAGS="-x objective-c -fgnu-runtime -fobjc-exceptions -S"
if AC_TRY_EVAL(ac_compile); then
if grep _Unwind_SjLj_Resume conftest.s >/dev/null 2>&1 ; then
enable_sjlj_exceptions=yes
elif grep _Unwind_Resume conftest.s >/dev/null 2>&1 ; then
enable_sjlj_exceptions=no
fi
fi
CFLAGS="$old_CFLAGS"
rm -f conftest*])
if test x$enable_sjlj_exceptions = xyes; then
AC_DEFINE(SJLJ_EXCEPTIONS, 1,
[Define if the compiler is configured for setjmp/longjmp exceptions.])
ac_exception_model_name=sjlj
elif test x$enable_sjlj_exceptions = xno; then
ac_exception_model_name="call frame"
else
AC_MSG_ERROR([unable to detect exception model])
fi
AC_LANG_POP(C)
AC_MSG_RESULT($ac_exception_model_name)
# ------
# Output
# ------
AC_CONFIG_FILES([Makefile])
AC_CONFIG_COMMANDS([default],
[[if test -n "$CONFIG_FILES"; then
if test -n "${with_target_subdir}"; then
# FIXME: We shouldn't need to set ac_file
ac_file=Makefile
LD="${ORIGINAL_LD_FOR_MULTILIBS}"
. ${multi_basedir}/config-ml.in
fi
fi]],
[[srcdir=${srcdir}
host=${host}
target=${target}
with_target_subdir=${with_target_subdir}
with_multisubdir=${with_multisubdir}
ac_configure_args="--enable-multilib ${ac_configure_args}"
multi_basedir=${multi_basedir}
CONFIG_SHELL=${CONFIG_SHELL-/bin/sh}
ORIGINAL_LD_FOR_MULTILIBS="${ORIGINAL_LD_FOR_MULTILIBS}"
]])
AC_OUTPUT

1083
contrib/libobjc/encoding.c
View File

File diff suppressed because it is too large Load Diff

376
contrib/libobjc/exception.c
View File

@ -1,376 +0,0 @@
/* The implementation of exception handling primitives for Objective-C.
Copyright (C) 2004 Free Software Foundation, Inc.
This file is part of GCC.
GCC is free software; you can redistribute it and/or modify it
under the terms of the GNU General Public License as published by the
Free Software Foundation; either version 2, or (at your option) any
later version.
GCC is distributed in the hope that it will be useful, but WITHOUT
ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public
License for more details.
You should have received a copy of the GNU General Public License
along with GCC; see the file COPYING. If not, write to
the Free Software Foundation, 51 Franklin Street, Fifth Floor,
Boston, MA 02110-1301, USA. */
/* As a special exception, if you link this library with files compiled
with GCC to produce an executable, this does not cause the resulting
executable to be covered by the GNU General Public License. This
exception does not however invalidate any other reasons why the
executable file might be covered by the GNU General Public License. */
#include <stdlib.h>
#include "config.h"
#include "objc/objc-api.h"
#include "unwind.h"
#include "unwind-pe.h"
/* This is the exception class we report -- "GNUCOBJC". */
#define __objc_exception_class \
((((((((_Unwind_Exception_Class) 'G' \
<< 8 | (_Unwind_Exception_Class) 'N') \
<< 8 | (_Unwind_Exception_Class) 'U') \
<< 8 | (_Unwind_Exception_Class) 'C') \
<< 8 | (_Unwind_Exception_Class) 'O') \
<< 8 | (_Unwind_Exception_Class) 'B') \
<< 8 | (_Unwind_Exception_Class) 'J') \
<< 8 | (_Unwind_Exception_Class) 'C')
/* This is the object that is passed around by the Objective C runtime
to represent the exception in flight. */
struct ObjcException
{
/* This bit is needed in order to interact with the unwind runtime. */
struct _Unwind_Exception base;
/* The actual object we want to throw. */
id value;
/* Cache some internal unwind data between phase 1 and phase 2. */
_Unwind_Ptr landingPad;
int handlerSwitchValue;
};
struct lsda_header_info
{
_Unwind_Ptr Start;
_Unwind_Ptr LPStart;
_Unwind_Ptr ttype_base;
const unsigned char *TType;
const unsigned char *action_table;
unsigned char ttype_encoding;
unsigned char call_site_encoding;
};
static const unsigned char *
parse_lsda_header (struct _Unwind_Context *context, const unsigned char *p,
struct lsda_header_info *info)
{
_Unwind_Word tmp;
unsigned char lpstart_encoding;
info->Start = (context ? _Unwind_GetRegionStart (context) : 0);
/* Find @LPStart, the base to which landing pad offsets are relative. */
lpstart_encoding = *p++;
if (lpstart_encoding != DW_EH_PE_omit)
p = read_encoded_value (context, lpstart_encoding, p, &info->LPStart);
else
info->LPStart = info->Start;
/* Find @TType, the base of the handler and exception spec type data. */
info->ttype_encoding = *p++;
if (info->ttype_encoding != DW_EH_PE_omit)
{
p = read_uleb128 (p, &tmp);
info->TType = p + tmp;
}
else
info->TType = 0;
/* The encoding and length of the call-site table; the action table
immediately follows. */
info->call_site_encoding = *p++;
p = read_uleb128 (p, &tmp);
info->action_table = p + tmp;
return p;
}
static Class
get_ttype_entry (struct lsda_header_info *info, _Unwind_Word i)
{
_Unwind_Ptr ptr;
i *= size_of_encoded_value (info->ttype_encoding);
read_encoded_value_with_base (info->ttype_encoding, info->ttype_base,
info->TType - i, &ptr);
/* NULL ptr means catch-all. */
if (ptr)
return objc_get_class ((const char *) ptr);
else
return 0;
}
/* Like unto the method of the same name on Object, but takes an id. */
/* ??? Does this bork the meta-type system? Can/should we look up an
isKindOf method on the id? */
static int
isKindOf (id value, Class target)
{
Class c;
/* NULL target is catch-all. */
if (target == 0)
return 1;
for (c = value->class_pointer; c; c = class_get_super_class (c))
if (c == target)
return 1;
return 0;
}
/* Using a different personality function name causes link failures
when trying to mix code using different exception handling models. */
#ifdef SJLJ_EXCEPTIONS
#define PERSONALITY_FUNCTION __gnu_objc_personality_sj0
#define __builtin_eh_return_data_regno(x) x
#else
#define PERSONALITY_FUNCTION __gnu_objc_personality_v0
#endif
_Unwind_Reason_Code
PERSONALITY_FUNCTION (int version,
_Unwind_Action actions,
_Unwind_Exception_Class exception_class,
struct _Unwind_Exception *ue_header,
struct _Unwind_Context *context)
{
struct ObjcException *xh = (struct ObjcException *) ue_header;
struct lsda_header_info info;
const unsigned char *language_specific_data;
const unsigned char *action_record;
const unsigned char *p;
_Unwind_Ptr landing_pad, ip;
int handler_switch_value;
int saw_cleanup = 0, saw_handler;
void *return_object;
/* Interface version check. */
if (version != 1)
return _URC_FATAL_PHASE1_ERROR;
/* Shortcut for phase 2 found handler for domestic exception. */
if (actions == (_UA_CLEANUP_PHASE | _UA_HANDLER_FRAME)
&& exception_class == __objc_exception_class)
{
handler_switch_value = xh->handlerSwitchValue;
landing_pad = xh->landingPad;
goto install_context;
}
language_specific_data = (const unsigned char *)
_Unwind_GetLanguageSpecificData (context);
/* If no LSDA, then there are no handlers or cleanups. */
if (! language_specific_data)
return _URC_CONTINUE_UNWIND;
/* Parse the LSDA header. */
p = parse_lsda_header (context, language_specific_data, &info);
info.ttype_base = base_of_encoded_value (info.ttype_encoding, context);
ip = _Unwind_GetIP (context) - 1;
landing_pad = 0;
action_record = 0;
handler_switch_value = 0;
#ifdef SJLJ_EXCEPTIONS
/* The given "IP" is an index into the call-site table, with two
exceptions -- -1 means no-action, and 0 means terminate. But
since we're using uleb128 values, we've not got random access
to the array. */
if ((int) ip < 0)
return _URC_CONTINUE_UNWIND;
else
{
_Unwind_Word cs_lp, cs_action;
do
{
p = read_uleb128 (p, &cs_lp);
p = read_uleb128 (p, &cs_action);
}
while (--ip);
/* Can never have null landing pad for sjlj -- that would have
been indicated by a -1 call site index. */
landing_pad = cs_lp + 1;
if (cs_action)
action_record = info.action_table + cs_action - 1;
goto found_something;
}
#else
/* Search the call-site table for the action associated with this IP. */
while (p < info.action_table)
{
_Unwind_Ptr cs_start, cs_len, cs_lp;
_Unwind_Word cs_action;
/* Note that all call-site encodings are "absolute" displacements. */
p = read_encoded_value (0, info.call_site_encoding, p, &cs_start);
p = read_encoded_value (0, info.call_site_encoding, p, &cs_len);
p = read_encoded_value (0, info.call_site_encoding, p, &cs_lp);
p = read_uleb128 (p, &cs_action);
/* The table is sorted, so if we've passed the ip, stop. */
if (ip < info.Start + cs_start)
p = info.action_table;
else if (ip < info.Start + cs_start + cs_len)
{
if (cs_lp)
landing_pad = info.LPStart + cs_lp;
if (cs_action)
action_record = info.action_table + cs_action - 1;
goto found_something;
}
}
#endif /* SJLJ_EXCEPTIONS */
/* If ip is not present in the table, C++ would call terminate. */
/* ??? As with Java, it's perhaps better to tweek the LSDA to
that no-action is mapped to no-entry. */
return _URC_CONTINUE_UNWIND;
found_something:
saw_cleanup = 0;
saw_handler = 0;
if (landing_pad == 0)
{
/* If ip is present, and has a null landing pad, there are
no cleanups or handlers to be run. */
}
else if (action_record == 0)
{
/* If ip is present, has a non-null landing pad, and a null
action table offset, then there are only cleanups present.
Cleanups use a zero switch value, as set above. */
saw_cleanup = 1;
}
else
{
/* Otherwise we have a catch handler. */
_Unwind_Sword ar_filter, ar_disp;
while (1)
{
p = action_record;
p = read_sleb128 (p, &ar_filter);
read_sleb128 (p, &ar_disp);
if (ar_filter == 0)
{
/* Zero filter values are cleanups. */
saw_cleanup = 1;
}
/* During forced unwinding, we only run cleanups. With a
foreign exception class, we have no class info to match. */
else if ((actions & _UA_FORCE_UNWIND)
|| exception_class != __objc_exception_class)
;
else if (ar_filter > 0)
{
/* Positive filter values are handlers. */
Class catch_type = get_ttype_entry (&info, ar_filter);
if (isKindOf (xh->value, catch_type))
{
handler_switch_value = ar_filter;
saw_handler = 1;
break;
}
}
else
{
/* Negative filter values are exception specifications,
which Objective-C does not use. */
abort ();
}
if (ar_disp == 0)
break;
action_record = p + ar_disp;
}
}
if (! saw_handler && ! saw_cleanup)
return _URC_CONTINUE_UNWIND;
if (actions & _UA_SEARCH_PHASE)
{
if (!saw_handler)
return _URC_CONTINUE_UNWIND;
/* For domestic exceptions, we cache data from phase 1 for phase 2. */
if (exception_class == __objc_exception_class)
{
xh->handlerSwitchValue = handler_switch_value;
xh->landingPad = landing_pad;
}
return _URC_HANDLER_FOUND;
}
install_context:
if (saw_cleanup == 0)
{
return_object = xh->value;
if (!(actions & _UA_SEARCH_PHASE))
_Unwind_DeleteException(&xh->base);
}
_Unwind_SetGR (context, __builtin_eh_return_data_regno (0),
__builtin_extend_pointer (saw_cleanup ? xh : return_object));
_Unwind_SetGR (context, __builtin_eh_return_data_regno (1),
handler_switch_value);
_Unwind_SetIP (context, landing_pad);
return _URC_INSTALL_CONTEXT;
}
static void
__objc_exception_cleanup (_Unwind_Reason_Code code __attribute__((unused)),
struct _Unwind_Exception *exc)
{
free (exc);
}
void
objc_exception_throw (id value)
{
struct ObjcException *header = calloc (1, sizeof (*header));
header->base.exception_class = __objc_exception_class;
header->base.exception_cleanup = __objc_exception_cleanup;
header->value = value;
#ifdef SJLJ_EXCEPTIONS
_Unwind_SjLj_RaiseException (&header->base);
#else
_Unwind_RaiseException (&header->base);
#endif
/* Some sort of unwinding error. */
abort ();
}

454
contrib/libobjc/gc.c
View File

@ -1,454 +0,0 @@
/* Basic data types for Objective C.
Copyright (C) 1998, 2002, 2004, 2005, 2006 Free Software Foundation, Inc.
Contributed by Ovidiu Predescu.
This file is part of GCC.
GCC is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2, or (at your option)
any later version.
GCC is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with GCC; see the file COPYING. If not, write to
the Free Software Foundation, 51 Franklin Street, Fifth Floor,
Boston, MA 02110-1301, USA. */
/* As a special exception, if you link this library with files
compiled with GCC to produce an executable, this does not cause
the resulting executable to be covered by the GNU General Public License.
This exception does not however invalidate any other reasons why
the executable file might be covered by the GNU General Public License. */
#include "tconfig.h"
#include "objc/objc.h"
#include "objc/encoding.h"
#include <assert.h>
#include <string.h>
#include <stdlib.h>
#if OBJC_WITH_GC
#include <gc.h>
#include <limits.h>
/* gc_typed.h uses the following but doesn't declare them */
typedef GC_word word;
typedef GC_signed_word signed_word;
#define BITS_PER_WORD (CHAR_BIT * sizeof (word))
#include <gc_typed.h>
/* The following functions set up in `mask` the corresponding pointers.
The offset is incremented with the size of the type. */
#define ROUND(V, A) \
({ typeof (V) __v = (V); typeof (A) __a = (A); \
__a * ((__v+__a - 1)/__a); })
#define SET_BIT_FOR_OFFSET(mask, offset) \
GC_set_bit (mask, offset / sizeof (void *))
/* Some prototypes */
static void
__objc_gc_setup_struct (GC_bitmap mask, const char *type, int offset);
static void
__objc_gc_setup_union (GC_bitmap mask, const char *type, int offset);
static void
__objc_gc_setup_array (GC_bitmap mask, const char *type, int offset)
{
int i, len = atoi (type + 1);
while (isdigit (*++type))
/* do nothing */; /* skip the size of the array */
switch (*type) {
case _C_ARY_B:
for (i = 0; i < len; i++)
__objc_gc_setup_array (mask, type, offset);
break;
case _C_STRUCT_B:
for (i = 0; i < len; i++)
__objc_gc_setup_struct (mask, type, offset);
break;
case _C_UNION_B:
for (i = 0; i < len; i++)
__objc_gc_setup_union (mask, type, offset);
break;
default:
break;
}
}
static void
__objc_gc_setup_struct (GC_bitmap mask, const char *type, int offset)
{
struct objc_struct_layout layout;
unsigned int position;
const char *mtype;
objc_layout_structure (type, &layout);
while (objc_layout_structure_next_member (&layout))
{
BOOL gc_invisible = NO;
objc_layout_structure_get_info (&layout, &position, NULL, &mtype);
/* Skip the variable name */
if (*mtype == '"')
{
for (mtype++; *mtype++ != '"';)
/* do nothing */;
}
if (*mtype == _C_GCINVISIBLE)
{
gc_invisible = YES;
mtype++;
}
/* Add to position the offset of this structure */
position += offset;
switch (*mtype) {
case _C_ID:
case _C_CLASS:
case _C_SEL:
case _C_PTR:
case _C_CHARPTR:
case _C_ATOM:
if (! gc_invisible)
SET_BIT_FOR_OFFSET (mask, position);
break;
case _C_ARY_B:
__objc_gc_setup_array (mask, mtype, position);
break;
case _C_STRUCT_B:
__objc_gc_setup_struct (mask, mtype, position);
break;
case _C_UNION_B:
__objc_gc_setup_union (mask, mtype, position);
break;
default:
break;
}
}
}
static void
__objc_gc_setup_union (GC_bitmap mask, const char *type, int offset)
{
/* Sub-optimal, quick implementation: assume the union is made of
pointers, set up the mask accordingly. */
int i, size, align;
/* Skip the variable name */
if (*type == '"')
{
for (type++; *type++ != '"';)
/* do nothing */;
}
size = objc_sizeof_type (type);
align = objc_alignof_type (type);
offset = ROUND (offset, align);
for (i = 0; i < size; i += sizeof (void *))
{
SET_BIT_FOR_OFFSET (mask, offset);
offset += sizeof (void *);
}
}
/* Iterates over the types in the structure that represents the class
encoding and sets the bits in mask according to each ivar type. */
static void
__objc_gc_type_description_from_type (GC_bitmap mask, const char *type)
{
struct objc_struct_layout layout;
unsigned int offset, align;
const char *ivar_type;
objc_layout_structure (type, &layout);
while (objc_layout_structure_next_member (&layout))
{
BOOL gc_invisible = NO;
objc_layout_structure_get_info (&layout, &offset, &align, &ivar_type);
/* Skip the variable name */
if (*ivar_type == '"')
{
for (ivar_type++; *ivar_type++ != '"';)
/* do nothing */;
}
if (*ivar_type == _C_GCINVISIBLE)
{
gc_invisible = YES;
ivar_type++;
}
switch (*ivar_type) {
case _C_ID:
case _C_CLASS:
case _C_SEL:
case _C_PTR:
case _C_CHARPTR:
if (! gc_invisible)
SET_BIT_FOR_OFFSET (mask, offset);
break;
case _C_ARY_B:
__objc_gc_setup_array (mask, ivar_type, offset);
break;
case _C_STRUCT_B:
__objc_gc_setup_struct (mask, ivar_type, offset);
break;
case _C_UNION_B:
__objc_gc_setup_union (mask, ivar_type, offset);
break;
default:
break;
}
}
}
/* Computes in *type the full type encoding of this class including
its super classes. '*size' gives the total number of bytes allocated
into *type, '*current' the number of bytes used so far by the
encoding. */
static void
__objc_class_structure_encoding (Class class, char **type, int *size,
int *current)
{
int i, ivar_count;
struct objc_ivar_list *ivars;
if (! class)
{
strcat (*type, "{");
(*current)++;
return;
}
/* Add the type encodings of the super classes */
__objc_class_structure_encoding (class->super_class, type, size, current);
ivars = class->ivars;
if (! ivars)
return;
ivar_count = ivars->ivar_count;
for (i = 0; i < ivar_count; i++)
{
struct objc_ivar *ivar = &(ivars->ivar_list[i]);
const char *ivar_type = ivar->ivar_type;
int len = strlen (ivar_type);
if (*current + len + 1 >= *size)
{
/* Increase the size of the encoding string so that it
contains this ivar's type. */
*size = ROUND (*current + len + 1, 10);
*type = objc_realloc (*type, *size);
}
strcat (*type + *current, ivar_type);
*current += len;
}
}
/* Allocates the memory that will hold the type description for class
and calls the __objc_class_structure_encoding that generates this
value. */
void
__objc_generate_gc_type_description (Class class)
{
GC_bitmap mask;
int bits_no, size;
int type_size = 10, current;
char *class_structure_type;
if (! CLS_ISCLASS (class))
return;
/* We have to create a mask in which each bit counts for a pointer member.
We take into consideration all the non-pointer instance variables and we
round them up to the alignment. */
/* The number of bits in the mask is the size of an instance in bytes divided
by the size of a pointer. */
bits_no = (ROUND (class_get_instance_size (class), sizeof (void *))
/ sizeof (void *));
size = ROUND (bits_no, BITS_PER_WORD) / BITS_PER_WORD;
mask = objc_atomic_malloc (size * sizeof (int));
memset (mask, 0, size * sizeof (int));
class_structure_type = objc_atomic_malloc (type_size);
*class_structure_type = current = 0;
__objc_class_structure_encoding (class, &class_structure_type,
&type_size, &current);
if (current + 1 == type_size)
class_structure_type = objc_realloc (class_structure_type, ++type_size);
strcat (class_structure_type + current, "}");
#ifdef DEBUG
printf ("type description for '%s' is %s\n", class->name, class_structure_type);
#endif
__objc_gc_type_description_from_type (mask, class_structure_type);
objc_free (class_structure_type);
#ifdef DEBUG
printf (" mask for '%s', type '%s' (bits %d, mask size %d) is:",
class_structure_type, class->name, bits_no, size);
{
int i;
for (i = 0; i < size; i++)
printf (" %lx", mask[i]);
}
puts ("");
#endif
class->gc_object_type = (void *) GC_make_descriptor (mask, bits_no);
}
/* Returns YES if type denotes a pointer type, NO otherwise */
static inline BOOL
__objc_ivar_pointer (const char *type)
{
type = objc_skip_type_qualifiers (type);
return (*type == _C_ID
|| *type == _C_CLASS
|| *type == _C_SEL
|| *type == _C_PTR
|| *type == _C_CHARPTR
|| *type == _C_ATOM);
}
/* Mark the instance variable whose name is given by ivarname as a
weak pointer (a pointer hidden to the garbage collector) if
gc_invisible is true. If gc_invisible is false it unmarks the
instance variable and makes it a normal pointer, visible to the
garbage collector.
This operation only makes sense on instance variables that are
pointers. */
void
class_ivar_set_gcinvisible (Class class, const char *ivarname,
BOOL gc_invisible)
{
int i, ivar_count;
struct objc_ivar_list *ivars;
if (! class || ! ivarname)
return;
ivars = class->ivars;
if (! ivars)
return;
ivar_count = ivars->ivar_count;
for (i = 0; i < ivar_count; i++)
{
struct objc_ivar *ivar = &(ivars->ivar_list[i]);
const char *type;
if (! ivar->ivar_name || strcmp (ivar->ivar_name, ivarname))
continue;
assert (ivar->ivar_type);
type = ivar->ivar_type;
/* Skip the variable name */
if (*type == '"')
{
for (type++; *type++ != '"';)
/* do nothing */;
}
if (*type == _C_GCINVISIBLE)
{
char *new_type;
size_t len;
if (gc_invisible || ! __objc_ivar_pointer (type))
return; /* The type of the variable already matches the
requested gc_invisible type */
/* The variable is gc_invisible so we make it gc visible. */
new_type = objc_atomic_malloc (strlen(ivar->ivar_type));
len = (type - ivar->ivar_type);
memcpy (new_type, ivar->ivar_type, len);
new_type[len] = 0;
strcat (new_type, type + 1);
ivar->ivar_type = new_type;
}
else
{
char *new_type;
size_t len;
if (! gc_invisible || ! __objc_ivar_pointer (type))
return; /* The type of the variable already matches the
requested gc_invisible type */
/* The variable is gc visible so we make it gc_invisible. */
new_type = objc_malloc (strlen(ivar->ivar_type) + 2);
len = (type - ivar->ivar_type);
memcpy (new_type, ivar->ivar_type, len);
new_type[len] = 0;
strcat (new_type, "!");
strcat (new_type, type);
ivar->ivar_type = new_type;
}
__objc_generate_gc_type_description (class);
return;
}
/* Search the instance variable in the superclasses */
class_ivar_set_gcinvisible (class->super_class, ivarname, gc_invisible);
}
#else /* !OBJC_WITH_GC */
void
__objc_generate_gc_type_description (Class class __attribute__ ((__unused__)))
{
}
void class_ivar_set_gcinvisible (Class class __attribute__ ((__unused__)),
const char *ivarname __attribute__ ((__unused__)),
BOOL gc_invisible __attribute__ ((__unused__)))
{
}
#endif /* OBJC_WITH_GC */

283
contrib/libobjc/hash.c
View File

@ -1,283 +0,0 @@
/* Hash tables for Objective C internal structures
Copyright (C) 1993, 1996, 1997, 2004 Free Software Foundation, Inc.
This file is part of GCC.
GCC is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2, or (at your option)
any later version.
GCC is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with GCC; see the file COPYING. If not, write to
the Free Software Foundation, 51 Franklin Street, Fifth Floor,
Boston, MA 02110-1301, USA. */
/* As a special exception, if you link this library with files
compiled with GCC to produce an executable, this does not cause
the resulting executable to be covered by the GNU General Public License.
This exception does not however invalidate any other reasons why
the executable file might be covered by the GNU General Public License. */
#include "assert.h"
#include "objc/hash.h"
#include "objc/runtime.h" /* for DEBUG_PRINTF */
/* These two macros determine when a hash table is full and
by how much it should be expanded respectively.
These equations are percentages. */
#define FULLNESS(cache) \
((((cache)->size * 75) / 100) <= (cache)->used)
#define EXPANSION(cache) \
((cache)->size * 2)
cache_ptr
objc_hash_new (unsigned int size, hash_func_type hash_func,
compare_func_type compare_func)
{
cache_ptr cache;
/* Pass me a value greater than 0 and a power of 2. */
assert (size);
assert (! (size & (size - 1)));
/* Allocate the cache structure. calloc insures
its initialization for default values. */
cache = (cache_ptr) objc_calloc (1, sizeof (struct cache));
assert (cache);
/* Allocate the array of buckets for the cache.
calloc initializes all of the pointers to NULL. */
cache->node_table
= (node_ptr *) objc_calloc (size, sizeof (node_ptr));
assert (cache->node_table);
cache->size = size;
/* This should work for all processor architectures? */
cache->mask = (size - 1);
/* Store the hashing function so that codes can be computed. */
cache->hash_func = hash_func;
/* Store the function that compares hash keys to
determine if they are equal. */
cache->compare_func = compare_func;
return cache;
}
void
objc_hash_delete (cache_ptr cache)
{
node_ptr node;
node_ptr next_node;
unsigned int i;
/* Purge all key/value pairs from the table. */
/* Step through the nodes one by one and remove every node WITHOUT
using objc_hash_next. this makes objc_hash_delete much more efficient. */
for (i = 0;i < cache->size;i++) {
if ((node = cache->node_table[i])) {
/* an entry in the hash table has been found, now step through the
nodes next in the list and free them. */
while ((next_node = node->next)) {
objc_hash_remove (cache,node->key);
node = next_node;
}
objc_hash_remove (cache,node->key);
}
}
/* Release the array of nodes and the cache itself. */
objc_free(cache->node_table);
objc_free(cache);
}
void
objc_hash_add (cache_ptr *cachep, const void *key, void *value)
{
size_t indx = (*(*cachep)->hash_func)(*cachep, key);
node_ptr node = (node_ptr) objc_calloc (1, sizeof (struct cache_node));
assert (node);
/* Initialize the new node. */
node->key = key;
node->value = value;
node->next = (*cachep)->node_table[indx];
/* Debugging.
Check the list for another key. */
#ifdef DEBUG
{ node_ptr node1 = (*cachep)->node_table[indx];
while (node1) {
assert (node1->key != key);
node1 = node1->next;
}
}
#endif
/* Install the node as the first element on the list. */
(*cachep)->node_table[indx] = node;
/* Bump the number of entries in the cache. */
++(*cachep)->used;
/* Check the hash table's fullness. We're going
to expand if it is above the fullness level. */
if (FULLNESS (*cachep)) {
/* The hash table has reached its fullness level. Time to
expand it.
I'm using a slow method here but is built on other
primitive functions thereby increasing its
correctness. */
node_ptr node1 = NULL;
cache_ptr new = objc_hash_new (EXPANSION (*cachep),
(*cachep)->hash_func,
(*cachep)->compare_func);
DEBUG_PRINTF ("Expanding cache %#x from %d to %d\n",
(int) *cachep, (*cachep)->size, new->size);
/* Copy the nodes from the first hash table to the new one. */
while ((node1 = objc_hash_next (*cachep, node1)))
objc_hash_add (&new, node1->key, node1->value);
/* Trash the old cache. */
objc_hash_delete (*cachep);
/* Return a pointer to the new hash table. */
*cachep = new;
}
}
void
objc_hash_remove (cache_ptr cache, const void *key)
{
size_t indx = (*cache->hash_func)(cache, key);
node_ptr node = cache->node_table[indx];
/* We assume there is an entry in the table. Error if it is not. */
assert (node);
/* Special case. First element is the key/value pair to be removed. */
if ((*cache->compare_func)(node->key, key)) {
cache->node_table[indx] = node->next;
objc_free(node);
} else {
/* Otherwise, find the hash entry. */
node_ptr prev = node;
BOOL removed = NO;
do {
if ((*cache->compare_func)(node->key, key)) {
prev->next = node->next, removed = YES;
objc_free(node);
} else
prev = node, node = node->next;
} while (! removed && node);
assert (removed);
}
/* Decrement the number of entries in the hash table. */
--cache->used;
}
node_ptr
objc_hash_next (cache_ptr cache, node_ptr node)
{
/* If the scan is being started then reset the last node
visitied pointer and bucket index. */
if (! node)
cache->last_bucket = 0;
/* If there is a node visited last then check for another
entry in the same bucket; Otherwise step to the next bucket. */
if (node) {
if (node->next)
/* There is a node which follows the last node
returned. Step to that node and retun it. */
return node->next;
else
++cache->last_bucket;
}
/* If the list isn't exhausted then search the buckets for
other nodes. */
if (cache->last_bucket < cache->size) {
/* Scan the remainder of the buckets looking for an entry
at the head of the list. Return the first item found. */
while (cache->last_bucket < cache->size)
if (cache->node_table[cache->last_bucket])
return cache->node_table[cache->last_bucket];
else
++cache->last_bucket;
/* No further nodes were found in the hash table. */
return NULL;
} else
return NULL;
}
/* Given KEY, return corresponding value for it in CACHE.
Return NULL if the KEY is not recorded. */
void *
objc_hash_value_for_key (cache_ptr cache, const void *key)
{
node_ptr node = cache->node_table[(*cache->hash_func)(cache, key)];
void *retval = NULL;
if (node)
do {
if ((*cache->compare_func)(node->key, key)) {
retval = node->value;
break;
} else
node = node->next;
} while (! retval && node);
return retval;
}
/* Given KEY, return YES if it exists in the CACHE.
Return NO if it does not */
BOOL
objc_hash_is_key_in_hash (cache_ptr cache, const void *key)
{
node_ptr node = cache->node_table[(*cache->hash_func)(cache, key)];
if (node)
do {
if ((*cache->compare_func)(node->key, key))
return YES;
else
node = node->next;
} while (node);
return NO;
}

894
contrib/libobjc/init.c
View File

@ -1,894 +0,0 @@
/* GNU Objective C Runtime initialization
Copyright (C) 1993, 1995, 1996, 1997, 2002 Free Software Foundation, Inc.
Contributed by Kresten Krab Thorup
+load support contributed by Ovidiu Predescu <ovidiu@net-community.com>
This file is part of GCC.
GCC is free software; you can redistribute it and/or modify it under the
terms of the GNU General Public License as published by the Free Software
Foundation; either version 2, or (at your option) any later version.
GCC is distributed in the hope that it will be useful, but WITHOUT ANY
WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
details.
You should have received a copy of the GNU General Public License along with
GCC; see the file COPYING. If not, write to the Free Software
Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. */
/* As a special exception, if you link this library with files compiled with
GCC to produce an executable, this does not cause the resulting executable
to be covered by the GNU General Public License. This exception does not
however invalidate any other reasons why the executable file might be
covered by the GNU General Public License. */
#include "objc/runtime.h"
/* The version number of this runtime. This must match the number
defined in gcc (objc-act.c). */
#define OBJC_VERSION 8
#define PROTOCOL_VERSION 2
/* This list contains all modules currently loaded into the runtime. */
static struct objc_list *__objc_module_list = 0; /* !T:MUTEX */
/* This list contains all proto_list's not yet assigned class links. */
static struct objc_list *unclaimed_proto_list = 0; /* !T:MUTEX */
/* List of unresolved static instances. */
static struct objc_list *uninitialized_statics = 0; /* !T:MUTEX */
/* Global runtime "write" mutex. */
objc_mutex_t __objc_runtime_mutex = 0;
/* Number of threads that are alive. */
int __objc_runtime_threads_alive = 1; /* !T:MUTEX */
/* Check compiler vs runtime version. */
static void init_check_module_version (Module_t);
/* Assign isa links to protos. */
static void __objc_init_protocols (struct objc_protocol_list *protos);
/* Add protocol to class. */
static void __objc_class_add_protocols (Class, struct objc_protocol_list *);
/* This is a hook which is called by __objc_exec_class every time a
class or a category is loaded into the runtime. This may e.g. help
a dynamic loader determine the classes that have been loaded when
an object file is dynamically linked in. */
void (*_objc_load_callback) (Class class, Category *category); /* !T:SAFE */
/* Is all categories/classes resolved? */
BOOL __objc_dangling_categories = NO; /* !T:UNUSED */
extern SEL
__sel_register_typed_name (const char *name, const char *types,
struct objc_selector *orig, BOOL is_const);
/* Sends +load to all classes and categories in certain situations. */
static void objc_send_load (void);
/* Inserts all the classes defined in module in a tree of classes that
resembles the class hierarchy. This tree is traversed in preorder
and the classes in its nodes receive the +load message if these
methods were not executed before. The algorithm ensures that when
the +load method of a class is executed all the superclasses have
been already received the +load message. */
static void __objc_create_classes_tree (Module_t module);
static void __objc_call_callback (Module_t module);
/* A special version that works only before the classes are completely
installed in the runtime. */
static BOOL class_is_subclass_of_class (Class class, Class superclass);
typedef struct objc_class_tree {
Class class;
struct objc_list *subclasses; /* `head' is pointer to an objc_class_tree */
} objc_class_tree;
/* This is a linked list of objc_class_tree trees. The head of these
trees are root classes (their super class is Nil). These different
trees represent different class hierarchies. */
static struct objc_list *__objc_class_tree_list = NULL;
/* Keeps the +load methods who have been already executed. This hash
should not be destroyed during the execution of the program. */
static cache_ptr __objc_load_methods = NULL;
/* This function is used when building the class tree used to send
ordinately the +load message to all classes needing it. The tree
is really needed so that superclasses will get the message before
subclasses.
This tree will contain classes which are being loaded (or have just
being loaded), and whose super_class pointers have not yet been
resolved. This implies that their super_class pointers point to a
string with the name of the superclass; when the first message is
sent to the class (/an object of that class) the class links will
be resolved, which will replace the super_class pointers with
pointers to the actual superclasses.
Unfortunately, the tree might also contain classes which had been
loaded previously, and whose class links have already been
resolved.
This function returns the superclass of a class in both cases, and
can be used to build the determine the class relationships while
building the tree.
*/
static Class class_superclass_of_class (Class class)
{
char *super_class_name;
/* If the class links have been resolved, use the resolved
* links. */
if (CLS_ISRESOLV (class))
return class->super_class;
/* Else, 'class' has not yet been resolved. This means that its
* super_class pointer is really the name of the super class (rather
* than a pointer to the actual superclass). */
super_class_name = (char *)class->super_class;
/* Return Nil for a root class. */
if (super_class_name == NULL)
return Nil;
/* Lookup the superclass of non-root classes. */
return objc_lookup_class (super_class_name);
}
/* Creates a tree of classes whose topmost class is directly inherited
from `upper' and the bottom class in this tree is
`bottom_class'. The classes in this tree are super classes of
`bottom_class'. `subclasses' member of each tree node point to the
next subclass tree node. */
static objc_class_tree *
create_tree_of_subclasses_inherited_from (Class bottom_class, Class upper)
{
Class superclass = bottom_class->super_class ?
objc_lookup_class ((char *) bottom_class->super_class)
: Nil;
objc_class_tree *tree, *prev;
DEBUG_PRINTF ("create_tree_of_subclasses_inherited_from:");
DEBUG_PRINTF ("bottom_class = %s, upper = %s\n",
(bottom_class ? bottom_class->name : NULL),
(upper ? upper->name : NULL));
tree = prev = objc_calloc (1, sizeof (objc_class_tree));
prev->class = bottom_class;
while (superclass != upper)
{
tree = objc_calloc (1, sizeof (objc_class_tree));
tree->class = superclass;
tree->subclasses = list_cons (prev, tree->subclasses);
superclass = class_superclass_of_class (superclass);
prev = tree;
}
return tree;
}
/* Insert the `class' into the proper place in the `tree' class
hierarchy. This function returns a new tree if the class has been
successfully inserted into the tree or NULL if the class is not
part of the classes hierarchy described by `tree'. This function is
private to objc_tree_insert_class (), you should not call it
directly. */
static objc_class_tree *
__objc_tree_insert_class (objc_class_tree *tree, Class class)
{
DEBUG_PRINTF ("__objc_tree_insert_class: tree = %x, class = %s\n",
tree, class->name);
if (tree == NULL)
return create_tree_of_subclasses_inherited_from (class, NULL);
else if (class == tree->class)
{
/* `class' has been already inserted */
DEBUG_PRINTF ("1. class %s was previously inserted\n", class->name);
return tree;
}
else if (class_superclass_of_class (class) == tree->class)
{
/* If class is a direct subclass of tree->class then add class to the
list of subclasses. First check to see if it wasn't already
inserted. */
struct objc_list *list = tree->subclasses;
objc_class_tree *node;
while (list)
{
/* Class has been already inserted; do nothing just return
the tree. */
if (((objc_class_tree *) list->head)->class == class)
{
DEBUG_PRINTF ("2. class %s was previously inserted\n",
class->name);
return tree;
}
list = list->tail;
}
/* Create a new node class and insert it into the list of subclasses */
node = objc_calloc (1, sizeof (objc_class_tree));
node->class = class;
tree->subclasses = list_cons (node, tree->subclasses);
DEBUG_PRINTF ("3. class %s inserted\n", class->name);
return tree;
}
else
{
/* The class is not a direct subclass of tree->class. Search for
class's superclasses in the list of subclasses. */
struct objc_list *subclasses = tree->subclasses;
/* Precondition: the class must be a subclass of tree->class;
otherwise return NULL to indicate our caller that it must
take the next tree. */
if (! class_is_subclass_of_class (class, tree->class))
return NULL;
for (; subclasses != NULL; subclasses = subclasses->tail)
{
Class aClass = ((objc_class_tree *) (subclasses->head))->class;
if (class_is_subclass_of_class (class, aClass))
{
/* If we found one of class's superclasses we insert the
class into its subtree and return the original tree
since nothing has been changed. */
subclasses->head
= __objc_tree_insert_class (subclasses->head, class);
DEBUG_PRINTF ("4. class %s inserted\n", class->name);
return tree;
}
}
/* We haven't found a subclass of `class' in the `subclasses'
list. Create a new tree of classes whose topmost class is a
direct subclass of tree->class. */
{
objc_class_tree *new_tree
= create_tree_of_subclasses_inherited_from (class, tree->class);
tree->subclasses = list_cons (new_tree, tree->subclasses);
DEBUG_PRINTF ("5. class %s inserted\n", class->name);
return tree;
}
}
}
/* This function inserts `class' in the right tree hierarchy classes. */
static void
objc_tree_insert_class (Class class)
{
struct objc_list *list_node;
objc_class_tree *tree;
list_node = __objc_class_tree_list;
while (list_node)
{
tree = __objc_tree_insert_class (list_node->head, class);
if (tree)
{
list_node->head = tree;
break;
}
else
list_node = list_node->tail;
}
/* If the list was finished but the class hasn't been inserted,
insert it here. */
if (! list_node)
{
__objc_class_tree_list = list_cons (NULL, __objc_class_tree_list);
__objc_class_tree_list->head = __objc_tree_insert_class (NULL, class);
}
}
/* Traverse tree in preorder. Used to send +load. */
static void
objc_preorder_traverse (objc_class_tree *tree,
int level,
void (*function) (objc_class_tree *, int))
{
struct objc_list *node;
(*function) (tree, level);
for (node = tree->subclasses; node; node = node->tail)
objc_preorder_traverse (node->head, level + 1, function);
}
/* Traverse tree in postorder. Used to destroy a tree. */
static void
objc_postorder_traverse (objc_class_tree *tree,
int level,
void (*function) (objc_class_tree *, int))
{
struct objc_list *node;
for (node = tree->subclasses; node; node = node->tail)
objc_postorder_traverse (node->head, level + 1, function);
(*function) (tree, level);
}
/* Used to print a tree class hierarchy. */
#ifdef DEBUG
static void
__objc_tree_print (objc_class_tree *tree, int level)
{
int i;
for (i = 0; i < level; i++)
printf (" ");
printf ("%s\n", tree->class->name);
}
#endif
/* Walks on a linked list of methods in the reverse order and executes
all the methods corresponding to `op' selector. Walking in the
reverse order assures the +load of class is executed first and then
+load of categories because of the way in which categories are
added to the class methods. */
static void
__objc_send_message_in_list (MethodList_t method_list, Class class, SEL op)
{
int i;
if (! method_list)
return;
/* First execute the `op' message in the following method lists */
__objc_send_message_in_list (method_list->method_next, class, op);
/* Search the method list. */
for (i = 0; i < method_list->method_count; i++)
{
Method_t mth = &method_list->method_list[i];
if (mth->method_name && sel_eq (mth->method_name, op)
&& ! objc_hash_is_key_in_hash (__objc_load_methods, mth->method_imp))
{
/* Add this method into the +load hash table */
objc_hash_add (&__objc_load_methods,
mth->method_imp,
mth->method_imp);
DEBUG_PRINTF ("sending +load in class: %s\n", class->name);
/* The method was found and wasn't previously executed. */
(*mth->method_imp) ((id)class, mth->method_name);
break;
}
}
}
static void
__objc_send_load (objc_class_tree *tree,
int level __attribute__ ((__unused__)))
{
static SEL load_sel = 0;
Class class = tree->class;
MethodList_t method_list = class->class_pointer->methods;
if (! load_sel)
load_sel = sel_register_name ("load");
__objc_send_message_in_list (method_list, class, load_sel);
}
static void
__objc_destroy_class_tree_node (objc_class_tree *tree,
int level __attribute__ ((__unused__)))
{
objc_free (tree);
}
/* This is used to check if the relationship between two classes
before the runtime completely installs the classes. */
static BOOL
class_is_subclass_of_class (Class class, Class superclass)
{
for (; class != Nil;)
{
if (class == superclass)
return YES;
class = class_superclass_of_class (class);
}
return NO;
}
/* This list contains all the classes in the runtime system for whom
their superclasses are not yet known to the runtime. */
static struct objc_list *unresolved_classes = 0;
/* Extern function used to reference the Object and NXConstantString
classes. */
extern void __objc_force_linking (void);
void
__objc_force_linking (void)
{
extern void __objc_linking (void);
__objc_linking ();
}
/* Run through the statics list, removing modules as soon as all its
statics have been initialized. */
static void
objc_init_statics (void)
{
struct objc_list **cell = &uninitialized_statics;
struct objc_static_instances **statics_in_module;
objc_mutex_lock (__objc_runtime_mutex);
while (*cell)
{
int module_initialized = 1;
for (statics_in_module = (*cell)->head;
*statics_in_module; statics_in_module++)
{
struct objc_static_instances *statics = *statics_in_module;
Class class = objc_lookup_class (statics->class_name);
if (! class)
module_initialized = 0;
/* Actually, the static's class_pointer will be NULL when we
haven't been here before. However, the comparison is to be
reminded of taking into account class posing and to think about
possible semantics... */
else if (class != statics->instances[0]->class_pointer)
{
id *inst;
for (inst = &statics->instances[0]; *inst; inst++)
{
(*inst)->class_pointer = class;
/* ??? Make sure the object will not be freed. With
refcounting, invoke `-retain'. Without refcounting, do
nothing and hope that `-free' will never be invoked. */
/* ??? Send the object an `-initStatic' or something to
that effect now or later on? What are the semantics of
statically allocated instances, besides the trivial
NXConstantString, anyway? */
}
}
}
if (module_initialized)
{
/* Remove this module from the uninitialized list. */
struct objc_list *this = *cell;
*cell = this->tail;
objc_free (this);
}
else
cell = &(*cell)->tail;
}
objc_mutex_unlock (__objc_runtime_mutex);
} /* objc_init_statics */
/* This function is called by constructor functions generated for each
module compiled. (_GLOBAL_$I$...) The purpose of this function is
to gather the module pointers so that they may be processed by the
initialization routines as soon as possible. */
void
__objc_exec_class (Module_t module)
{
/* Have we processed any constructors previously? This flag is used to
indicate that some global data structures need to be built. */
static BOOL previous_constructors = 0;
static struct objc_list *unclaimed_categories = 0;
/* The symbol table (defined in objc-api.h) generated by gcc */
Symtab_t symtab = module->symtab;
/* The statics in this module */
struct objc_static_instances **statics
= symtab->defs[symtab->cls_def_cnt + symtab->cat_def_cnt];
/* Entry used to traverse hash lists */
struct objc_list **cell;
/* The table of selector references for this module */
SEL selectors = symtab->refs;
/* dummy counter */
int i;
DEBUG_PRINTF ("received module: %s\n", module->name);
/* check gcc version */
init_check_module_version (module);
/* On the first call of this routine, initialize some data structures. */
if (! previous_constructors)
{
/* Initialize thread-safe system */
__objc_init_thread_system ();
__objc_runtime_threads_alive = 1;
__objc_runtime_mutex = objc_mutex_allocate ();
__objc_init_selector_tables ();
__objc_init_class_tables ();
__objc_init_dispatch_tables ();
__objc_class_tree_list = list_cons (NULL, __objc_class_tree_list);
__objc_load_methods = objc_hash_new (128,
(hash_func_type)objc_hash_ptr,
objc_compare_ptrs);
previous_constructors = 1;
}
/* Save the module pointer for later processing. (not currently used) */
objc_mutex_lock (__objc_runtime_mutex);
__objc_module_list = list_cons (module, __objc_module_list);
/* Replace referenced selectors from names to SEL's. */
if (selectors)
{
for (i = 0; selectors[i].sel_id; ++i)
{
const char *name, *type;
name = (char *) selectors[i].sel_id;
type = (char *) selectors[i].sel_types;
/* Constructors are constant static data so we can safely store
pointers to them in the runtime structures. is_const == YES */
__sel_register_typed_name (name, type,
(struct objc_selector *) &(selectors[i]),
YES);
}
}
/* Parse the classes in the load module and gather selector information. */
DEBUG_PRINTF ("gathering selectors from module: %s\n", module->name);
for (i = 0; i < symtab->cls_def_cnt; ++i)
{
Class class = (Class) symtab->defs[i];
const char *superclass = (char *) class->super_class;
/* Make sure we have what we think. */
assert (CLS_ISCLASS (class));
assert (CLS_ISMETA (class->class_pointer));
DEBUG_PRINTF ("phase 1, processing class: %s\n", class->name);
/* Initialize the subclass list to be NULL.
In some cases it isn't and this crashes the program. */
class->subclass_list = NULL;
/* Store the class in the class table and assign class numbers. */
__objc_add_class_to_hash (class);
/* Register all of the selectors in the class and meta class. */
__objc_register_selectors_from_class (class);
__objc_register_selectors_from_class ((Class) class->class_pointer);
/* Install the fake dispatch tables */
__objc_install_premature_dtable (class);
__objc_install_premature_dtable (class->class_pointer);
/* Register the instance methods as class methods, this is
only done for root classes. */
__objc_register_instance_methods_to_class (class);
if (class->protocols)
__objc_init_protocols (class->protocols);
/* Check to see if the superclass is known in this point. If it's not
add the class to the unresolved_classes list. */
if (superclass && ! objc_lookup_class (superclass))
unresolved_classes = list_cons (class, unresolved_classes);
}
/* Process category information from the module. */
for (i = 0; i < symtab->cat_def_cnt; ++i)
{
Category_t category = symtab->defs[i + symtab->cls_def_cnt];
Class class = objc_lookup_class (category->class_name);
/* If the class for the category exists then append its methods. */
if (class)
{
DEBUG_PRINTF ("processing categories from (module,object): %s, %s\n",
module->name,
class->name);
/* Do instance methods. */
if (category->instance_methods)
class_add_method_list (class, category->instance_methods);
/* Do class methods. */
if (category->class_methods)
class_add_method_list ((Class) class->class_pointer,
category->class_methods);
if (category->protocols)
{
__objc_init_protocols (category->protocols);
__objc_class_add_protocols (class, category->protocols);
}
/* Register the instance methods as class methods, this is
only done for root classes. */
__objc_register_instance_methods_to_class (class);
}
else
{
/* The object to which the category methods belong can't be found.
Save the information. */
unclaimed_categories = list_cons (category, unclaimed_categories);
}
}
if (statics)
uninitialized_statics = list_cons (statics, uninitialized_statics);
if (uninitialized_statics)
objc_init_statics ();
/* Scan the unclaimed category hash. Attempt to attach any unclaimed
categories to objects. */
for (cell = &unclaimed_categories; *cell; )
{
Category_t category = (*cell)->head;
Class class = objc_lookup_class (category->class_name);
if (class)
{
DEBUG_PRINTF ("attaching stored categories to object: %s\n",
class->name);
list_remove_head (cell);
if (category->instance_methods)
class_add_method_list (class, category->instance_methods);
if (category->class_methods)
class_add_method_list ((Class) class->class_pointer,
category->class_methods);
if (category->protocols)
{
__objc_init_protocols (category->protocols);
__objc_class_add_protocols (class, category->protocols);
}
/* Register the instance methods as class methods, this is
only done for root classes. */
__objc_register_instance_methods_to_class (class);
}
else
cell = &(*cell)->tail;
}
if (unclaimed_proto_list && objc_lookup_class ("Protocol"))
{
list_mapcar (unclaimed_proto_list,
(void (*) (void *))__objc_init_protocols);
list_free (unclaimed_proto_list);
unclaimed_proto_list = 0;
}
objc_send_load ();
objc_mutex_unlock (__objc_runtime_mutex);
}
static void
objc_send_load (void)
{
if (! __objc_module_list)
return;
/* Try to find out if all the classes loaded so far also have their
superclasses known to the runtime. We suppose that the objects
that are allocated in the +load method are in general of a class
declared in the same module. */
if (unresolved_classes)
{
Class class = unresolved_classes->head;
while (objc_lookup_class ((char *) class->super_class))
{
list_remove_head (&unresolved_classes);
if (unresolved_classes)
class = unresolved_classes->head;
else
break;
}
/* If we still have classes for whom we don't have yet their
super classes known to the runtime we don't send the +load
messages. */
if (unresolved_classes)
return;
}
/* Special check to allow creating and sending messages to constant
strings in +load methods. If these classes are not yet known,
even if all the other classes are known, delay sending of +load. */
if (! objc_lookup_class ("NXConstantString") ||
! objc_lookup_class ("Object"))
return;
/* Iterate over all modules in the __objc_module_list and call on
them the __objc_create_classes_tree function. This function
creates a tree of classes that resembles the class hierarchy. */
list_mapcar (__objc_module_list,
(void (*) (void *)) __objc_create_classes_tree);
while (__objc_class_tree_list)
{
#ifdef DEBUG
objc_preorder_traverse (__objc_class_tree_list->head,
0, __objc_tree_print);
#endif
objc_preorder_traverse (__objc_class_tree_list->head,
0, __objc_send_load);
objc_postorder_traverse (__objc_class_tree_list->head,
0, __objc_destroy_class_tree_node);
list_remove_head (&__objc_class_tree_list);
}
list_mapcar (__objc_module_list, (void (*) (void *)) __objc_call_callback);
list_free (__objc_module_list);
__objc_module_list = NULL;
}
static void
__objc_create_classes_tree (Module_t module)
{
/* The runtime mutex is locked in this point */
Symtab_t symtab = module->symtab;
int i;
/* Iterate thru classes defined in this module and insert them in
the classes tree hierarchy. */
for (i = 0; i < symtab->cls_def_cnt; i++)
{
Class class = (Class) symtab->defs[i];
objc_tree_insert_class (class);
}
}
static void
__objc_call_callback (Module_t module)
{
/* The runtime mutex is locked in this point. */
Symtab_t symtab = module->symtab;
int i;
/* Iterate thru classes defined in this module and call the callback
for each one. */
for (i = 0; i < symtab->cls_def_cnt; i++)
{
Class class = (Class) symtab->defs[i];
/* Call the _objc_load_callback for this class. */
if (_objc_load_callback)
_objc_load_callback (class, 0);
}
/* Call the _objc_load_callback for categories. Don't register the
instance methods as class methods for categories to root classes
since they were already added in the class. */
for (i = 0; i < symtab->cat_def_cnt; i++)
{
Category_t category = symtab->defs[i + symtab->cls_def_cnt];
Class class = objc_lookup_class (category->class_name);
if (_objc_load_callback)
_objc_load_callback (class, category);
}
}
/* Sanity check the version of gcc used to compile `module'. */
static void
init_check_module_version (Module_t module)
{
if ((module->version != OBJC_VERSION) || (module->size != sizeof (Module)))
{
int code;
if (module->version > OBJC_VERSION)
code = OBJC_ERR_OBJC_VERSION;
else if (module->version < OBJC_VERSION)
code = OBJC_ERR_GCC_VERSION;
else
code = OBJC_ERR_MODULE_SIZE;
objc_error (nil, code, "Module %s version %d doesn't match runtime %d\n",
module->name, (int)module->version, OBJC_VERSION);
}
}
static void
__objc_init_protocols (struct objc_protocol_list *protos)
{
size_t i;
static Class proto_class = 0;
if (! protos)
return;
objc_mutex_lock (__objc_runtime_mutex);
if (! proto_class)
proto_class = objc_lookup_class ("Protocol");
if (! proto_class)
{
unclaimed_proto_list = list_cons (protos, unclaimed_proto_list);
objc_mutex_unlock (__objc_runtime_mutex);
return;
}
#if 0
assert (protos->next == 0); /* only single ones allowed */
#endif
for (i = 0; i < protos->count; i++)
{
struct objc_protocol *aProto = protos->list[i];
if (((size_t)aProto->class_pointer) == PROTOCOL_VERSION)
{
/* assign class pointer */
aProto->class_pointer = proto_class;
/* init super protocols */
__objc_init_protocols (aProto->protocol_list);
}
else if (protos->list[i]->class_pointer != proto_class)
{
objc_error (nil, OBJC_ERR_PROTOCOL_VERSION,
"Version %d doesn't match runtime protocol version %d\n",
(int) ((char *) protos->list[i]->class_pointer
- (char *) 0),
PROTOCOL_VERSION);
}
}
objc_mutex_unlock (__objc_runtime_mutex);
}
static void
__objc_class_add_protocols (Class class, struct objc_protocol_list *protos)
{
/* Well... */
if (! protos)
return;
/* Add it... */
protos->next = class->protocols;
class->protocols = protos;
}

170
contrib/libobjc/libobjc.def
View File

@ -1,170 +0,0 @@
; GNU Objective C Runtime DLL Export Definitions
; Copyright (C) 1997 Free Software Foundation, Inc.
; Contributed by Scott Christley <scottc@net-community.com>
;
; This file is part of GCC.
;
; GCC is free software; you can redistribute it and/or modify it under the
; terms of the GNU General Public License as published by the Free Software
; Foundation; either version 2, or (at your option) any later version.
;
; GCC is distributed in the hope that it will be useful, but WITHOUT ANY
; WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
; FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
; details.
;
; You should have received a copy of the GNU General Public License along with
; GCC; see the file COPYING. If not, write to the Free Software
; Foundation, 51 Franklin Street, Fifth Floor,
; Boston, MA 02110-1301, USA.
LIBRARY libobjc
EXPORTS
search_for_method_in_list
objc_get_uninstalled_dtable
objc_hash_is_key_in_hash
hash_is_key_in_hash
objc_verror
_objc_load_callback
objc_malloc
objc_atomic_malloc
objc_valloc
objc_realloc
objc_calloc
objc_free
__objc_init_thread_system
objc_mutex_allocate
objc_mutex_deallocate
objc_mutex_lock
objc_mutex_trylock
objc_mutex_unlock
objc_thread_detach
objc_thread_exit
objc_thread_get_data
objc_thread_get_priority
objc_thread_id
objc_thread_set_data
objc_thread_set_priority
objc_thread_yield
objc_thread_add
objc_thread_remove
__objc_class_name_Object
__objc_class_name_Protocol
__objc_class_name_NXConstantString
objc_error
__objc_object_alloc
__objc_object_copy
__objc_object_dispose
class_create_instance
object_copy
object_dispose
__objc_init_selector_tables
__objc_register_selectors_from_class
__sel_register_typed_name
sel_get_any_typed_uid
sel_get_any_uid
sel_get_name
sel_get_type
sel_get_typed_uid
sel_get_uid
sel_is_mapped
sel_register_name
sel_register_typed_name
sel_types_match
method_get_first_argument
method_get_next_argument
method_get_nth_argument
method_get_number_of_arguments
method_get_sizeof_arguments
objc_aligned_size
objc_alignof_type
objc_get_type_qualifiers
objc_promoted_size
objc_sizeof_type
objc_skip_argspec
objc_skip_offset
objc_skip_type_qualifiers
objc_skip_typespec
__objc_read_nbyte_uint
__objc_read_nbyte_ulong
__objc_write_class
__objc_write_object
__objc_write_selector
objc_close_typed_stream
objc_end_of_typed_stream
objc_flush_typed_stream
objc_get_stream_class_version
objc_open_typed_stream
objc_open_typed_stream_for_file
objc_read_array
objc_read_char
objc_read_int
objc_read_long
objc_read_object
objc_read_selector
objc_read_short
objc_read_string
objc_read_type
objc_read_types
objc_read_unsigned_char
objc_read_unsigned_int
objc_read_unsigned_long
objc_read_unsigned_short
objc_write_array
objc_write_char
objc_write_int
objc_write_long
objc_write_object
objc_write_object_reference
objc_write_root_object
objc_write_selector
objc_write_short
objc_write_string
objc_write_string_atomic
objc_write_type
objc_write_types
objc_write_unsigned_char
objc_write_unsigned_int
objc_write_unsigned_long
objc_write_unsigned_short
__objc_exec_class
__objc_init_dispatch_tables
__objc_install_premature_dtable
__objc_print_dtable_stats
__objc_responds_to
__objc_update_dispatch_table_for_class
class_add_method_list
class_get_class_method
class_get_instance_method
get_imp
nil_method
objc_msg_lookup
objc_msg_lookup_super
objc_msg_sendv
__objc_add_class_to_hash
__objc_init_class_tables
__objc_resolve_class_links
class_pose_as
objc_get_class
objc_get_meta_class
objc_lookup_class
objc_next_class
sarray_at_put
sarray_at_put_safe
sarray_free
sarray_lazy_copy
sarray_new
sarray_realloc
sarray_remove_garbage
objc_hash_add
hash_add
objc_hash_delete
hash_delete
objc_hash_new
hash_new
objc_hash_next
hash_next
objc_hash_remove
hash_remove
objc_hash_value_for_key
hash_value_for_key

55
contrib/libobjc/libobjc_entry.c
View File

@ -1,55 +0,0 @@
/* GNU Objective C Runtime DLL Entry
Copyright (C) 1997 Free Software Foundation, Inc.
Contributed by Scott Christley <scottc@net-community.com>
This file is part of GCC.
GCC is free software; you can redistribute it and/or modify it
under the terms of the GNU General Public License as published by the
Free Software Foundation; either version 2, or (at your option) any
later version.
GCC is distributed in the hope that it will be useful, but WITHOUT
ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
for more details.
You should have received a copy of the GNU General Public License
along with GCC; see the file COPYING. If not, write to the Free
Software Foundation, 51 Franklin Street, Fifth Floor,
Boston, MA 02110-1301, USA. */
/* As a special exception, if you link this library with files compiled with
GCC to produce an executable, this does not cause the resulting executable
to be covered by the GNU General Public License. This exception does not
however invalidate any other reasons why the executable file might be
covered by the GNU General Public License. */
#include <windows.h>
/*
DLL entry function for Objective-C Runtime library
This function gets called everytime a process/thread attaches to DLL
*/
WINBOOL WINAPI DllMain(HANDLE hInst, ULONG ul_reason_for_call,
LPVOID lpReserved)
{
switch(ul_reason_for_call)
{
case DLL_PROCESS_ATTACH:
break;
case DLL_PROCESS_DETACH:
break;
case DLL_THREAD_ATTACH:
break;
case DLL_THREAD_DETACH:
break;
}
return TRUE;
}
/*
This section terminates the list of imports under GCC. If you do not
include this then you will have problems when linking with DLLs.
*/
asm (".section .idata$3\n" ".long 0,0,0,0,0,0,0,0");

40
contrib/libobjc/linking.m
View File

@ -1,40 +0,0 @@
/* Force linking of classes required by Objective C runtime.
Copyright (C) 1997 Free Software Foundation, Inc.
Contributed by Ovidiu Predescu (ovidiu@net-community.com).
This file is part of GCC.
GCC is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2, or (at your option)
any later version.
GCC is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with GCC; see the file COPYING. If not, write to
the Free Software Foundation, 51 Franklin Street, Fifth Floor,
Boston, MA 02110-1301, USA. */
/* As a special exception, if you link this library with files compiled with
GCC to produce an executable, this does not cause the resulting executable
to be covered by the GNU General Public License. This exception does not
however invalidate any other reasons why the executable file might be
covered by the GNU General Public License. */
#include <objc/Object.h>
#include <objc/NXConstStr.h>
/* Generate references to Object and NXConstanstString classes since they are
needed by the runtime system to run correctly. */
void __objc_linking (void)
{
[Object name];
[NXConstantString name];
}

56
contrib/libobjc/makefile.dos
View File

@ -1,56 +0,0 @@
# GNU Objective C Runtime Makefile for compiling with djgpp
# Copyright (C) 1993, 1994, 1996 Free Software Foundation, Inc.
#
# This file is part of GCC.
#
# GCC is free software; you can redistribute it and/or modify it under the
# terms of the GNU General Public License as published by the Free Software
# Foundation; either version 2, or (at your option) any later version.
#
# GCC is distributed in the hope that it will be useful, but WITHOUT ANY
# WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
# FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
# details.
#
# You should have received a copy of the GNU General Public License along with
# GCC; see the file COPYING. If not, write to the Free Software
# Foundation, 51 Franklin Street, Fifth Floor,
# Boston, MA 02110-1301, USA.
# This Makefile is configured for GnuMAKE
GCC_FOR_TARGET=gcc
.SUFFIXES: .o .m
OPTIMIZE = -O2
# Always search these dirs when compiling.
SUBDIR_INCLUDES = -I. -I.. -I../config
.c.o:
$(GCC_FOR_TARGET) $(OPTIMIZE) \
-c $(GCC_CFLAGS) $(SUBDIR_INCLUDES) $<
.m.o:
$(GCC_FOR_TARGET) $(OPTIMIZE) -fgnu-runtime \
-c $(GCC_CFLAGS) $(SUBDIR_INCLUDES) $<
OBJC_O = hash.o sarray.o class.o sendmsg.o init.o archive.o \
selector.o objects.o misc.o object.o protocol.o encoding.o thread.o
libobjc.a: $(OBJC_O)
-rm -f libobjc.a
ar rc libobjc.a $(OBJC_O)
ranlib libobjc.a
OBJC_H = hash.h objc-list.h sarray.h objc.h \
objc-api.h \
object.h protocol.h mutex.h \
typedstream.h thread.h
mostlyclean:
-rm -f *.o libobjc.a xforward fflags
clean: mostlyclean
distclean: mostlyclean
extraclean: mostlyclean

185
contrib/libobjc/misc.c
View File

@ -1,185 +0,0 @@
/* GNU Objective C Runtime Miscellaneous
Copyright (C) 1993, 1994, 1995, 1996, 1997, 2002
Free Software Foundation, Inc.
Contributed by Kresten Krab Thorup
This file is part of GCC.
GCC is free software; you can redistribute it and/or modify it
under the terms of the GNU General Public License as published by the
Free Software Foundation; either version 2, or (at your option) any
later version.
GCC is distributed in the hope that it will be useful, but WITHOUT
ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
for more details.
You should have received a copy of the GNU General Public License
along with GCC; see the file COPYING. If not, write to the Free
Software Foundation, 51 Franklin Street, Fifth Floor,
Boston, MA 02110-1301, USA. */
/* As a special exception, if you link this library with files compiled with
GCC to produce an executable, this does not cause the resulting executable
to be covered by the GNU General Public License. This exception does not
however invalidate any other reasons why the executable file might be
covered by the GNU General Public License. */
#define __USE_FIXED_PROTOTYPES__
#include <stdlib.h>
#include "objc/runtime.h"
/*
** Error handler function
** NULL so that default is to just print to stderr
*/
static objc_error_handler _objc_error_handler = NULL;
/* Trigger an objc error */
void
objc_error (id object, int code, const char *fmt, ...)
{
va_list ap;
va_start (ap, fmt);
objc_verror (object, code, fmt, ap);
va_end (ap);
}
/* Trigger an objc error */
void
objc_verror (id object, int code, const char *fmt, va_list ap)
{
BOOL result = NO;
/* Call the error handler if its there
Otherwise print to stderr */
if (_objc_error_handler)
result = (*_objc_error_handler) (object, code, fmt, ap);
else
vfprintf (stderr, fmt, ap);
/* Continue if the error handler says its ok
Otherwise abort the program */
if (result)
return;
else
abort ();
}
/* Set the error handler */
objc_error_handler
objc_set_error_handler (objc_error_handler func)
{
objc_error_handler temp = _objc_error_handler;
_objc_error_handler = func;
return temp;
}
/*
** Standard functions for memory allocation and disposal.
** Users should use these functions in their ObjC programs so
** that they work properly with garbage collectors as well as
** can take advantage of the exception/error handling available.
*/
void *
objc_malloc (size_t size)
{
void *res = (void *) (*_objc_malloc) (size);
if (! res)
objc_error (nil, OBJC_ERR_MEMORY, "Virtual memory exhausted\n");
return res;
}
void *
objc_atomic_malloc (size_t size)
{
void *res = (void *) (*_objc_atomic_malloc) (size);
if (! res)
objc_error (nil, OBJC_ERR_MEMORY, "Virtual memory exhausted\n");
return res;
}
void *
objc_valloc (size_t size)
{
void *res = (void *) (*_objc_valloc) (size);
if (! res)
objc_error (nil, OBJC_ERR_MEMORY, "Virtual memory exhausted\n");
return res;
}
void *
objc_realloc (void *mem, size_t size)
{
void *res = (void *) (*_objc_realloc) (mem, size);
if (! res)
objc_error (nil, OBJC_ERR_MEMORY, "Virtual memory exhausted\n");
return res;
}
void *
objc_calloc (size_t nelem, size_t size)
{
void *res = (void *) (*_objc_calloc) (nelem, size);
if (! res)
objc_error (nil, OBJC_ERR_MEMORY, "Virtual memory exhausted\n");
return res;
}
void
objc_free (void *mem)
{
(*_objc_free) (mem);
}
/*
** Hook functions for memory allocation and disposal.
** This makes it easy to substitute garbage collection systems
** such as Boehm's GC by assigning these function pointers
** to the GC's allocation routines. By default these point
** to the ANSI standard malloc, realloc, free, etc.
**
** Users should call the normal objc routines above for
** memory allocation and disposal within their programs.
*/
#if OBJC_WITH_GC
#include <gc.h>
static void *
GC_calloc (size_t nelem, size_t size)
{
void *p = GC_malloc (nelem * size);
if (! p)
objc_error (nil, OBJC_ERR_MEMORY, "Virtual memory exhausted!\n");
memset (p, 0, nelem * size);
return p;
}
static void
noFree (void *p)
{
}
void *(*_objc_malloc) (size_t) = GC_malloc;
void *(*_objc_atomic_malloc) (size_t) = GC_malloc_atomic;
void *(*_objc_valloc) (size_t) = GC_malloc;
void *(*_objc_realloc) (void *, size_t) = GC_realloc;
void *(*_objc_calloc) (size_t, size_t) = GC_calloc;
void (*_objc_free) (void *) = noFree;
#else /* !OBJC_WITH_GC */
void *(*_objc_malloc) (size_t) = malloc;
void *(*_objc_atomic_malloc) (size_t) = malloc;
void *(*_objc_valloc) (size_t) = malloc;
void *(*_objc_realloc) (void *, size_t) = realloc;
void *(*_objc_calloc) (size_t, size_t) = calloc;
void (*_objc_free) (void *) = free;
#endif /* !OBJC_WITH_GC */

55
contrib/libobjc/nil_method.c
View File

@ -1,55 +0,0 @@
/* GNU Objective C Runtime nil receiver function
Copyright (C) 1993, 1995, 1996, 2002 Free Software Foundation, Inc.
Contributed by Kresten Krab Thorup
This file is part of GCC.
GCC is free software; you can redistribute it and/or modify it under the
terms of the GNU General Public License as published by the Free Software
Foundation; either version 2, or (at your option) any later version.
GCC is distributed in the hope that it will be useful, but WITHOUT ANY
WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
details.
You should have received a copy of the GNU General Public License along with
GCC; see the file COPYING. If not, write to the Free Software
Foundation, 51 Franklin Street, Fifth Floor,
Boston, MA 02110-1301, USA. */
/* As a special exception, if you link this library with files compiled with
GCC to produce an executable, this does not cause the resulting executable
to be covered by the GNU General Public License. This exception does not
however invalidate any other reasons why the executable file might be
covered by the GNU General Public License. */
/* This is the nil method, the function that is called when the receiver
of a method is nil */
#include "objc/runtime.h"
/* When the receiver of a method invocation is nil, the runtime
returns nil_method() as the method implementation. This function
will be casted to whatever function was supposed to be executed to
execute that method (that function will take an id, followed by a
SEL, followed by who knows what arguments, depends on the method),
and executed.
For this reason, nil_method() should be a function which can be
called in place of any function taking an 'id' argument followed by
a 'SEL' argument, followed by zero, or one, or any number of
arguments (both a fixed number, or a variable number !).
There is no "proper" implementation of such a nil_method function
in C, however in all existing implementations it does not matter
when extra arguments are present, so we can simply create a function
taking a receiver and a selector, and all other arguments will be
ignored. :-)
*/
id
nil_method (id receiver, SEL op __attribute__ ((__unused__)))
{
return receiver;
}

52
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/* Interface for the NXConstantString class for Objective-C.
Copyright (C) 1995, 2004 Free Software Foundation, Inc.
Contributed by Pieter J. Schoenmakers <tiggr@es.ele.tue.nl>
This file is part of GCC.
GCC is free software; you can redistribute it and/or modify it
under the terms of the GNU General Public License as published by the
Free Software Foundation; either version 2, or (at your option) any
later version.
GCC is distributed in the hope that it will be useful, but WITHOUT
ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public
License for more details.
You should have received a copy of the GNU General Public License
along with GCC; see the file COPYING. If not, write to
the Free Software Foundation, 51 Franklin Street, Fifth Floor,
Boston, MA 02110-1301, USA. */
/* As a special exception, if you link this library with files
compiled with GCC to produce an executable, this does not cause
the resulting executable to be covered by the GNU General Public License.
This exception does not however invalidate any other reasons why
the executable file might be covered by the GNU General Public License. */
#ifndef __nxconstantstring_INCLUDE_GNU
#define __nxconstantstring_INCLUDE_GNU
#include "Object.h"
#ifdef __cplusplus
extern "C" {
#endif
@interface NXConstantString: Object
{
char *c_string;
unsigned int len;
}
-(const char *) cString;
-(unsigned int) length;
@end
#ifdef __cplusplus
}
#endif
#endif

132
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/* Interface for the Object class for Objective-C.
Copyright (C) 1993, 1994, 1995 Free Software Foundation, Inc.
This file is part of GCC.
GCC is free software; you can redistribute it and/or modify it
under the terms of the GNU General Public License as published by the
Free Software Foundation; either version 2, or (at your option) any
later version.
GCC is distributed in the hope that it will be useful, but WITHOUT
ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public
License for more details.
You should have received a copy of the GNU General Public License
along with GCC; see the file COPYING. If not, write to
the Free Software Foundation, 51 Franklin Street, Fifth Floor,
Boston, MA 02110-1301, USA. */
/* As a special exception, if you link this library with files compiled
with GCC to produce an executable, this does not cause the resulting
executable to be covered by the GNU General Public License. This
exception does not however invalidate any other reasons why the
executable file might be covered by the GNU General Public License. */
#ifndef __object_INCLUDE_GNU
#define __object_INCLUDE_GNU
#include "objc.h"
#include "typedstream.h"
#ifdef __cplusplus
extern "C" {
#endif
/*
* All classes are derived from Object. As such,
* this is the overhead tacked onto those objects.
*/
@interface Object
{
Class isa; /* A pointer to the instance's class structure */
}
/* Initializing classes and instances */
+ initialize;
- init;
/* Creating, freeing, and copying instances */
+ new;
+ alloc;
- free;
- copy;
- shallowCopy;
- deepen;
- deepCopy;
/* Identifying classes */
- (Class)class;
- (Class)superClass;
- (MetaClass)metaClass;
- (const char *)name;
/* Identifying and comparing objects */
- self;
- (unsigned int)hash;
- (BOOL)isEqual:anObject;
- (int)compare:anotherObject;
/* Testing object type */
- (BOOL)isMetaClass;
- (BOOL)isClass;
- (BOOL)isInstance;
/* Testing inheritance relationships */
- (BOOL)isKindOf:(Class)aClassObject;
- (BOOL)isMemberOf:(Class)aClassObject;
- (BOOL)isKindOfClassNamed:(const char *)aClassName;
- (BOOL)isMemberOfClassNamed:(const char *)aClassName;
/* Testing class functionality */
+ (BOOL)instancesRespondTo:(SEL)aSel;
- (BOOL)respondsTo:(SEL)aSel;
/* Testing protocol conformance */
- (BOOL)conformsTo:(Protocol*)aProtocol;
/* Introspection */
+ (IMP)instanceMethodFor:(SEL)aSel;
- (IMP)methodFor:(SEL)aSel;
+ (struct objc_method_description *)descriptionForInstanceMethod:(SEL)aSel;
- (struct objc_method_description *)descriptionForMethod:(SEL)aSel;
/* Sending messages determined at run time */
- perform:(SEL)aSel;
- perform:(SEL)aSel with:anObject;
- perform:(SEL)aSel with:anObject1 with:anObject2;
/* Forwarding */
- (retval_t)forward:(SEL)aSel :(arglist_t)argFrame;
- (retval_t)performv:(SEL)aSel :(arglist_t)argFrame;
/* Posing */
+ poseAs:(Class)aClassObject;
- (Class)transmuteClassTo:(Class)aClassObject;
/* Enforcing intentions */
- subclassResponsibility:(SEL)aSel;
- notImplemented:(SEL)aSel;
- shouldNotImplement:(SEL)aSel;
/* Error handling */
- doesNotRecognize:(SEL)aSel;
- error:(const char *)aString, ...;
/* Archiving */
+ (int)version;
+ setVersion:(int)aVersion;
+ (int)streamVersion: (TypedStream*)aStream;
- read: (TypedStream*)aStream;
- write: (TypedStream*)aStream;
- awake;
@end
#ifdef __cplusplus
}
#endif
#endif

63
contrib/libobjc/objc/Protocol.h
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/* Declare the class Protocol for Objective C programs.
Copyright (C) 1993, 2004 Free Software Foundation, Inc.
This file is part of GCC.
GCC is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2, or (at your option)
any later version.
GCC is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with GCC; see the file COPYING. If not, write to
the Free Software Foundation, 51 Franklin Street, Fifth Floor,
Boston, MA 02110-1301, USA. */
/* As a special exception, if you link this library with files
compiled with GCC to produce an executable, this does not cause
the resulting executable to be covered by the GNU General Public License.
This exception does not however invalidate any other reasons why
the executable file might be covered by the GNU General Public License. */
#ifndef __Protocol_INCLUDE_GNU
#define __Protocol_INCLUDE_GNU
#include "Object.h"
#ifdef __cplusplus
extern "C" {
#endif
@interface Protocol : Object
{
@private
char *protocol_name;
struct objc_protocol_list *protocol_list;
struct objc_method_description_list *instance_methods, *class_methods;
}
/* Obtaining attributes intrinsic to the protocol */
- (const char *)name;
/* Testing protocol conformance */
- (BOOL) conformsTo: (Protocol *)aProtocolObject;
/* Looking up information specific to a protocol */
- (struct objc_method_description *) descriptionForInstanceMethod:(SEL)aSel;
- (struct objc_method_description *) descriptionForClassMethod:(SEL)aSel;
@end
#ifdef __cplusplus
}
#endif
#endif /* not __Protocol_INCLUDE_GNU */

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/* Encoding of types for Objective C.
Copyright (C) 1993, 1997, 2002, 2004 Free Software Foundation, Inc.
Author: Kresten Krab Thorup
This file is part of GCC.
GCC is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2, or (at your option)
any later version.
GCC is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with GCC; see the file COPYING. If not, write to
the Free Software Foundation, 51 Franklin Street, Fifth Floor,
Boston, MA 02110-1301, USA. */
/* As a special exception, if you link this library with files
compiled with GCC to produce an executable, this does not cause
the resulting executable to be covered by the GNU General Public License.
This exception does not however invalidate any other reasons why
the executable file might be covered by the GNU General Public License. */
#ifndef __encoding_INCLUDE_GNU
#define __encoding_INCLUDE_GNU
#include "objc-api.h"
#include <ctype.h>
#ifdef __cplusplus
extern "C" {
#endif /* __cplusplus */
#define _C_CONST 'r'
#define _C_IN 'n'
#define _C_INOUT 'N'
#define _C_OUT 'o'
#define _C_BYCOPY 'O'
#define _C_BYREF 'R'
#define _C_ONEWAY 'V'
#define _C_GCINVISIBLE '!'
#define _F_CONST 0x01
#define _F_IN 0x01
#define _F_OUT 0x02
#define _F_INOUT 0x03
#define _F_BYCOPY 0x04
#define _F_BYREF 0x08
#define _F_ONEWAY 0x10
#define _F_GCINVISIBLE 0x20
int objc_aligned_size (const char *type);
int objc_sizeof_type (const char *type);
int objc_alignof_type (const char *type);
int objc_aligned_size (const char *type);
int objc_promoted_size (const char *type);
const char *objc_skip_type_qualifiers (const char *type);
const char *objc_skip_typespec (const char *type);
const char *objc_skip_offset (const char *type);
const char *objc_skip_argspec (const char *type);
int method_get_number_of_arguments (struct objc_method *);
int method_get_sizeof_arguments (struct objc_method *);
char *method_get_first_argument (struct objc_method *,
arglist_t argframe,
const char **type);
char *method_get_next_argument (arglist_t argframe,
const char **type);
char *method_get_nth_argument (struct objc_method *m,
arglist_t argframe,
int arg,
const char **type);
unsigned objc_get_type_qualifiers (const char *type);
struct objc_struct_layout
{
const char *original_type;
const char *type;
const char *prev_type;
unsigned int record_size;
unsigned int record_align;
};
void objc_layout_structure (const char *type,
struct objc_struct_layout *layout);
BOOL objc_layout_structure_next_member (struct objc_struct_layout *layout);
void objc_layout_finish_structure (struct objc_struct_layout *layout,
unsigned int *size,
unsigned int *align);
void objc_layout_structure_get_info (struct objc_struct_layout *layout,
unsigned int *offset,
unsigned int *align,
const char **type);
#ifdef __cplusplus
}
#endif /* __cplusplus */
#endif /* __encoding_INCLUDE_GNU */

216
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/* Hash tables for Objective C method dispatch.
Copyright (C) 1993, 1995, 1996, 2004 Free Software Foundation, Inc.
This file is part of GCC.
GCC is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2, or (at your option)
any later version.
GCC is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with GCC; see the file COPYING. If not, write to
the Free Software Foundation, 51 Franklin Street, Fifth Floor,
Boston, MA 02110-1301, USA. */
/* As a special exception, if you link this library with files
compiled with GCC to produce an executable, this does not cause
the resulting executable to be covered by the GNU General Public License.
This exception does not however invalidate any other reasons why
the executable file might be covered by the GNU General Public License. */
#ifndef __hash_INCLUDE_GNU
#define __hash_INCLUDE_GNU
#include <stddef.h>
#include <string.h>
#include "objc.h"
#ifdef __cplusplus
extern "C" {
#endif /* __cplusplus */
/*
* This data structure is used to hold items
* stored in a hash table. Each node holds
* a key/value pair.
*
* Items in the cache are really of type void *.
*/
typedef struct cache_node
{
struct cache_node *next; /* Pointer to next entry on the list.
NULL indicates end of list. */
const void *key; /* Key used to locate the value. Used
to locate value when more than one
key computes the same hash
value. */
void *value; /* Value stored for the key. */
} *node_ptr;
/*
* This data type is the function that computes a hash code given a key.
* Therefore, the key can be a pointer to anything and the function specific
* to the key type.
*
* Unfortunately there is a mutual data structure reference problem with this
* typedef. Therefore, to remove compiler warnings the functions passed to
* objc_hash_new will have to be casted to this type.
*/
typedef unsigned int (*hash_func_type) (void *, const void *);
/*
* This data type is the function that compares two hash keys and returns an
* integer greater than, equal to, or less than 0, according as the first
* parameter is lexicographically greater than, equal to, or less than the
* second.
*/
typedef int (*compare_func_type) (const void *, const void *);
/*
* This data structure is the cache.
*
* It must be passed to all of the hashing routines
* (except for new).
*/
typedef struct cache
{
/* Variables used to implement the hash itself. */
node_ptr *node_table; /* Pointer to an array of hash nodes. */
/* Variables used to track the size of the hash table so to determine
when to resize it. */
unsigned int size; /* Number of buckets allocated for the hash table
(number of array entries allocated for
"node_table"). Must be a power of two. */
unsigned int used; /* Current number of entries in the hash table. */
unsigned int mask; /* Precomputed mask. */
/* Variables used to implement indexing through the hash table. */
unsigned int last_bucket; /* Tracks which entry in the array where
the last value was returned. */
/* Function used to compute a hash code given a key.
This function is specified when the hash table is created. */
hash_func_type hash_func;
/* Function used to compare two hash keys to see if they are equal. */
compare_func_type compare_func;
} *cache_ptr;
/* Two important hash tables. */
extern cache_ptr module_hash_table, class_hash_table;
/* Allocate and initialize a hash table. */
cache_ptr objc_hash_new (unsigned int size,
hash_func_type hash_func,
compare_func_type compare_func);
/* Deallocate all of the hash nodes and the cache itself. */
void objc_hash_delete (cache_ptr cache);
/* Add the key/value pair to the hash table. If the
hash table reaches a level of fullness then it will be resized.
assert if the key is already in the hash. */
void objc_hash_add (cache_ptr *cachep, const void *key, void *value);
/* Remove the key/value pair from the hash table.
assert if the key isn't in the table. */
void objc_hash_remove (cache_ptr cache, const void *key);
/* Used to index through the hash table. Start with NULL
to get the first entry.
Successive calls pass the value returned previously.
** Don't modify the hash during this operation ***
Cache nodes are returned such that key or value can
be extracted. */
node_ptr objc_hash_next (cache_ptr cache, node_ptr node);
/* Used to return a value from a hash table using a given key. */
void *objc_hash_value_for_key (cache_ptr cache, const void *key);
/* Used to determine if the given key exists in the hash table */
BOOL objc_hash_is_key_in_hash (cache_ptr cache, const void *key);
/************************************************
Useful hashing functions.
Declared inline for your pleasure.
************************************************/
/* Calculate a hash code by performing some
manipulation of the key pointer. (Use the lowest bits
except for those likely to be 0 due to alignment.) */
static inline unsigned int
objc_hash_ptr (cache_ptr cache, const void *key)
{
return ((size_t)key / sizeof (void *)) & cache->mask;
}
/* Calculate a hash code by iterating over a NULL
terminate string. */
static inline unsigned int
objc_hash_string (cache_ptr cache, const void *key)
{
unsigned int ret = 0;
unsigned int ctr = 0;
const char *ckey = (const char *) key;
while (*ckey) {
ret ^= *ckey++ << ctr;
ctr = (ctr + 1) % sizeof (void *);
}
return ret & cache->mask;
}
/* Compare two pointers for equality. */
static inline int
objc_compare_ptrs (const void *k1, const void *k2)
{
return (k1 == k2);
}
/* Compare two strings. */
static inline int
objc_compare_strings (const void *k1, const void *k2)
{
if (k1 == k2)
return 1;
else if (k1 == 0 || k2 == 0)
return 0;
else
return ! strcmp ((const char *) k1, (const char *) k2);
}
#ifdef __cplusplus
}
#endif /* __cplusplus */
#endif /* not __hash_INCLUDE_GNU */

626
contrib/libobjc/objc/objc-api.h
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/* GNU Objective-C Runtime API.
Copyright (C) 1993, 1995, 1996, 1997, 2002, 2004 Free Software Foundation, Inc.
This file is part of GCC.
GCC is free software; you can redistribute it and/or modify it
under the terms of the GNU General Public License as published by the
Free Software Foundation; either version 2, or (at your option) any
later version.
GCC is distributed in the hope that it will be useful, but WITHOUT
ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public
License for more details.
You should have received a copy of the GNU General Public License
along with GCC; see the file COPYING. If not, write to
the Free Software Foundation, 51 Franklin Street, Fifth Floor,
Boston, MA 02110-1301, USA. */
/* As a special exception, if you link this library with files compiled
with GCC to produce an executable, this does not cause the resulting
executable to be covered by the GNU General Public License. This
exception does not however invalidate any other reasons why the
executable file might be covered by the GNU General Public License. */
#ifndef __objc_api_INCLUDE_GNU
#define __objc_api_INCLUDE_GNU
#include "objc.h"
#include "hash.h"
#include "thr.h"
#include "objc-decls.h"
#include <stdio.h>
#include <stdarg.h>
#ifdef __cplusplus
extern "C" {
#endif /* __cplusplus */
/* For functions which return Method_t */
#define METHOD_NULL (Method_t)0
/* Boolean typedefs */
/*
** Method descriptor returned by introspective Object methods.
** This is really just the first part of the more complete objc_method
** structure defined below and used internally by the runtime.
*/
struct objc_method_description
{
SEL name; /* this is a selector, not a string */
char *types; /* type encoding */
};
/* Filer types used to describe Ivars and Methods. */
#define _C_ID '@'
#define _C_CLASS '#'
#define _C_SEL ':'
#define _C_CHR 'c'
#define _C_UCHR 'C'
#define _C_SHT 's'
#define _C_USHT 'S'
#define _C_INT 'i'
#define _C_UINT 'I'
#define _C_LNG 'l'
#define _C_ULNG 'L'
#define _C_LNG_LNG 'q'
#define _C_ULNG_LNG 'Q'
#define _C_FLT 'f'
#define _C_DBL 'd'
#define _C_BFLD 'b'
#define _C_BOOL 'B'
#define _C_VOID 'v'
#define _C_UNDEF '?'
#define _C_PTR '^'
#define _C_CHARPTR '*'
#define _C_ATOM '%'
#define _C_ARY_B '['
#define _C_ARY_E ']'
#define _C_UNION_B '('
#define _C_UNION_E ')'
#define _C_STRUCT_B '{'
#define _C_STRUCT_E '}'
#define _C_VECTOR '!'
#define _C_COMPLEX 'j'
/*
** Error handling
**
** Call objc_error() or objc_verror() to record an error; this error
** routine will generally exit the program but not necessarily if the
** user has installed his own error handler.
**
** Call objc_set_error_handler to assign your own function for
** handling errors. The function should return YES if it is ok
** to continue execution, or return NO or just abort if the
** program should be stopped. The default error handler is just to
** print a message on stderr.
**
** The error handler function should be of type objc_error_handler
** The first parameter is an object instance of relevance.
** The second parameter is an error code.
** The third parameter is a format string in the printf style.
** The fourth parameter is a variable list of arguments.
*/
extern void objc_error(id object, int code, const char* fmt, ...);
extern void objc_verror(id object, int code, const char* fmt, va_list ap);
typedef BOOL (*objc_error_handler)(id, int code, const char *fmt, va_list ap);
extern objc_error_handler objc_set_error_handler(objc_error_handler func);
/*
** Error codes
** These are used by the runtime library, and your
** error handling may use them to determine if the error is
** hard or soft thus whether execution can continue or abort.
*/
#define OBJC_ERR_UNKNOWN 0 /* Generic error */
#define OBJC_ERR_OBJC_VERSION 1 /* Incorrect runtime version */
#define OBJC_ERR_GCC_VERSION 2 /* Incorrect compiler version */
#define OBJC_ERR_MODULE_SIZE 3 /* Bad module size */
#define OBJC_ERR_PROTOCOL_VERSION 4 /* Incorrect protocol version */
#define OBJC_ERR_MEMORY 10 /* Out of memory */
#define OBJC_ERR_RECURSE_ROOT 20 /* Attempt to archive the root
object more than once. */
#define OBJC_ERR_BAD_DATA 21 /* Didn't read expected data */
#define OBJC_ERR_BAD_KEY 22 /* Bad key for object */
#define OBJC_ERR_BAD_CLASS 23 /* Unknown class */
#define OBJC_ERR_BAD_TYPE 24 /* Bad type specification */
#define OBJC_ERR_NO_READ 25 /* Cannot read stream */
#define OBJC_ERR_NO_WRITE 26 /* Cannot write stream */
#define OBJC_ERR_STREAM_VERSION 27 /* Incorrect stream version */
#define OBJC_ERR_BAD_OPCODE 28 /* Bad opcode */
#define OBJC_ERR_UNIMPLEMENTED 30 /* Method is not implemented */
#define OBJC_ERR_BAD_STATE 40 /* Bad thread state */
/*
** Set this variable nonzero to print a line describing each
** message that is sent. (this is currently disabled)
*/
extern BOOL objc_trace;
/* For every class which happens to have statically allocated instances in
this module, one OBJC_STATIC_INSTANCES is allocated by the compiler.
INSTANCES is NULL terminated and points to all statically allocated
instances of this class. */
struct objc_static_instances
{
char *class_name;
#ifdef __cplusplus
id instances[1];
#else
id instances[0];
#endif
};
/*
** Whereas a Module (defined further down) is the root (typically) of a file,
** a Symtab is the root of the class and category definitions within the
** module.
**
** A Symtab contains a variable length array of pointers to classes and
** categories defined in the module.
*/
typedef struct objc_symtab {
unsigned long sel_ref_cnt; /* Unknown. */
SEL refs; /* Unknown. */
unsigned short cls_def_cnt; /* Number of classes compiled
(defined) in the module. */
unsigned short cat_def_cnt; /* Number of categories
compiled (defined) in the
module. */
void *defs[1]; /* Variable array of pointers.
cls_def_cnt of type Class
followed by cat_def_cnt of
type Category_t, followed
by a NULL terminated array
of objc_static_instances. */
} Symtab, *Symtab_t;
/*
** The compiler generates one of these structures for each module that
** composes the executable (eg main.m).
**
** This data structure is the root of the definition tree for the module.
**
** A collect program runs between ld stages and creates a ObjC ctor array.
** That array holds a pointer to each module structure of the executable.
*/
typedef struct objc_module {
unsigned long version; /* Compiler revision. */
unsigned long size; /* sizeof(Module). */
const char* name; /* Name of the file where the
module was generated. The
name includes the path. */
Symtab_t symtab; /* Pointer to the Symtab of
the module. The Symtab
holds an array of
pointers to
the classes and categories
defined in the module. */
} Module, *Module_t;
/*
** The compiler generates one of these structures for a class that has
** instance variables defined in its specification.
*/
typedef struct objc_ivar {
const char* ivar_name; /* Name of the instance
variable as entered in the
class definition. */
const char* ivar_type; /* Description of the Ivar's
type. Useful for
debuggers. */
int ivar_offset; /* Byte offset from the base
address of the instance
structure to the variable. */
} *Ivar_t;
typedef struct objc_ivar_list {
int ivar_count; /* Number of structures (Ivar)
contained in the list. One
structure per instance
variable defined in the
class. */
struct objc_ivar ivar_list[1]; /* Variable length
structure. */
} IvarList, *IvarList_t;
/*
** The compiler generates one (or more) of these structures for a class that
** has methods defined in its specification.
**
** The implementation of a class can be broken into separate pieces in a file
** and categories can break them across modules. To handle this problem is a
** singly linked list of methods.
*/
typedef struct objc_method {
SEL method_name; /* This variable is the method's
name. It is a char*.
The unique integer passed to
objc_msg_send is a char* too.
It is compared against
method_name using strcmp. */
const char* method_types; /* Description of the method's
parameter list. Useful for
debuggers. */
IMP method_imp; /* Address of the method in the
executable. */
} Method, *Method_t;
typedef struct objc_method_list {
struct objc_method_list* method_next; /* This variable is used to link
a method list to another. It
is a singly linked list. */
int method_count; /* Number of methods defined in
this structure. */
Method method_list[1]; /* Variable length
structure. */
} MethodList, *MethodList_t;
struct objc_protocol_list {
struct objc_protocol_list *next;
size_t count;
Protocol *list[1];
};
/*
** This is used to assure consistent access to the info field of
** classes
*/
#ifndef HOST_BITS_PER_LONG
#define HOST_BITS_PER_LONG (sizeof(long)*8)
#endif
#define __CLS_INFO(cls) ((cls)->info)
#define __CLS_ISINFO(cls, mask) ((__CLS_INFO(cls)&mask)==mask)
#define __CLS_SETINFO(cls, mask) (__CLS_INFO(cls) |= mask)
/* The structure is of type MetaClass */
#define _CLS_META 0x2L
#define CLS_ISMETA(cls) ((cls)&&__CLS_ISINFO(cls, _CLS_META))
/* The structure is of type Class */
#define _CLS_CLASS 0x1L
#define CLS_ISCLASS(cls) ((cls)&&__CLS_ISINFO(cls, _CLS_CLASS))
/*
** The class is initialized within the runtime. This means that
** it has had correct super and sublinks assigned
*/
#define _CLS_RESOLV 0x8L
#define CLS_ISRESOLV(cls) __CLS_ISINFO(cls, _CLS_RESOLV)
#define CLS_SETRESOLV(cls) __CLS_SETINFO(cls, _CLS_RESOLV)
/*
** The class has been send a +initialize message or a such is not
** defined for this class
*/
#define _CLS_INITIALIZED 0x04L
#define CLS_ISINITIALIZED(cls) __CLS_ISINFO(cls, _CLS_INITIALIZED)
#define CLS_SETINITIALIZED(cls) __CLS_SETINFO(cls, _CLS_INITIALIZED)
/*
** The class number of this class. This must be the same for both the
** class and its meta class object
*/
#define CLS_GETNUMBER(cls) (__CLS_INFO(cls) >> (HOST_BITS_PER_LONG/2))
#define CLS_SETNUMBER(cls, num) \
({ (cls)->info <<= (HOST_BITS_PER_LONG/2); \
(cls)->info >>= (HOST_BITS_PER_LONG/2); \
__CLS_SETINFO(cls, (((unsigned long)num) << (HOST_BITS_PER_LONG/2))); })
/*
** The compiler generates one of these structures for each category. A class
** may have many categories and contain both instance and factory methods.
*/
typedef struct objc_category {
const char* category_name; /* Name of the category. Name
contained in the () of the
category definition. */
const char* class_name; /* Name of the class to which
the category belongs. */
MethodList_t instance_methods; /* Linked list of instance
methods defined in the
category. NULL indicates no
instance methods defined. */
MethodList_t class_methods; /* Linked list of factory
methods defined in the
category. NULL indicates no
class methods defined. */
struct objc_protocol_list *protocols; /* List of Protocols
conformed to */
} Category, *Category_t;
/*
** Structure used when a message is send to a class's super class. The
** compiler generates one of these structures and passes it to
** objc_msg_super.
*/
typedef struct objc_super {
id self; /* Id of the object sending
the message. */
#ifdef __cplusplus
Class super_class;
#else
Class class; /* Object's super class. */
#endif
} Super, *Super_t;
IMP objc_msg_lookup_super(Super_t super, SEL sel);
retval_t objc_msg_sendv(id, SEL, arglist_t);
/*
** This is a hook which is called by objc_lookup_class and
** objc_get_class if the runtime is not able to find the class.
** This may e.g. try to load in the class using dynamic loading.
** The function is guaranteed to be passed a non-NULL name string.
*/
objc_EXPORT Class (*_objc_lookup_class)(const char *name);
/*
** This is a hook which is called by __objc_exec_class every time a class
** or a category is loaded into the runtime. This may e.g. help a
** dynamic loader determine the classes that have been loaded when
** an object file is dynamically linked in.
*/
objc_EXPORT void (*_objc_load_callback)(Class _class, Category* category);
/*
** Hook functions for allocating, copying and disposing of instances
*/
objc_EXPORT id (*_objc_object_alloc)(Class _class);
objc_EXPORT id (*_objc_object_copy)(id object);
objc_EXPORT id (*_objc_object_dispose)(id object);
/*
** Standard functions for memory allocation and disposal.
** Users should use these functions in their ObjC programs so
** that they work properly with garbage collectors as well as
** can take advantage of the exception/error handling available.
*/
void *
objc_malloc(size_t size);
void *
objc_atomic_malloc(size_t size);
void *
objc_valloc(size_t size);
void *
objc_realloc(void *mem, size_t size);
void *
objc_calloc(size_t nelem, size_t size);
void
objc_free(void *mem);
/*
** Hook functions for memory allocation and disposal.
** This makes it easy to substitute garbage collection systems
** such as Boehm's GC by assigning these function pointers
** to the GC's allocation routines. By default these point
** to the ANSI standard malloc, realloc, free, etc.
**
** Users should call the normal objc routines above for
** memory allocation and disposal within their programs.
*/
objc_EXPORT void *(*_objc_malloc)(size_t);
objc_EXPORT void *(*_objc_atomic_malloc)(size_t);
objc_EXPORT void *(*_objc_valloc)(size_t);
objc_EXPORT void *(*_objc_realloc)(void *, size_t);
objc_EXPORT void *(*_objc_calloc)(size_t, size_t);
objc_EXPORT void (*_objc_free)(void *);
/*
** Hook for method forwarding. This makes it easy to substitute a
** library, such as ffcall, that implements closures, thereby avoiding
** gcc's __builtin_apply problems.
*/
objc_EXPORT IMP (*__objc_msg_forward)(SEL);
Method_t class_get_class_method(MetaClass _class, SEL aSel);
Method_t class_get_instance_method(Class _class, SEL aSel);
Class class_pose_as(Class impostor, Class superclass);
Class objc_get_class(const char *name);
Class objc_lookup_class(const char *name);
Class objc_next_class(void **enum_state);
const char *sel_get_name(SEL selector);
const char *sel_get_type(SEL selector);
SEL sel_get_uid(const char *name);
SEL sel_get_any_uid(const char *name);
SEL sel_get_any_typed_uid(const char *name);
SEL sel_get_typed_uid(const char *name, const char*);
SEL sel_register_name(const char *name);
SEL sel_register_typed_name(const char *name, const char*type);
BOOL sel_is_mapped (SEL aSel);
extern id class_create_instance(Class _class);
static inline const char *
class_get_class_name(Class _class)
{
return CLS_ISCLASS(_class)?_class->name:((_class==Nil)?"Nil":0);
}
static inline long
class_get_instance_size(Class _class)
{
return CLS_ISCLASS(_class)?_class->instance_size:0;
}
static inline MetaClass
class_get_meta_class(Class _class)
{
return CLS_ISCLASS(_class)?_class->class_pointer:Nil;
}
static inline Class
class_get_super_class(Class _class)
{
return CLS_ISCLASS(_class)?_class->super_class:Nil;
}
static inline int
class_get_version(Class _class)
{
return CLS_ISCLASS(_class)?_class->version:-1;
}
static inline BOOL
class_is_class(Class _class)
{
return CLS_ISCLASS(_class);
}
static inline BOOL
class_is_meta_class(Class _class)
{
return CLS_ISMETA(_class);
}
static inline void
class_set_version(Class _class, long version)
{
if (CLS_ISCLASS(_class))
_class->version = version;
}
static inline void *
class_get_gc_object_type (Class _class)
{
return CLS_ISCLASS(_class) ? _class->gc_object_type : NULL;
}
/* Mark the instance variable as innaccessible to the garbage collector */
extern void class_ivar_set_gcinvisible (Class _class,
const char* ivarname,
BOOL gcInvisible);
static inline IMP
method_get_imp(Method_t method)
{
return (method!=METHOD_NULL)?method->method_imp:(IMP)0;
}
IMP get_imp (Class _class, SEL sel);
/* Redefine on NeXTSTEP so as not to conflict with system function */
#ifdef __NeXT__
#define object_copy gnu_object_copy
#define object_dispose gnu_object_dispose
#endif
id object_copy(id object);
id object_dispose(id object);
static inline Class
object_get_class(id object)
{
return ((object!=nil)
? (CLS_ISCLASS(object->class_pointer)
? object->class_pointer
: (CLS_ISMETA(object->class_pointer)
? (Class)object
: Nil))
: Nil);
}
static inline const char *
object_get_class_name(id object)
{
return ((object!=nil)?(CLS_ISCLASS(object->class_pointer)
?object->class_pointer->name
:((Class)object)->name)
:"Nil");
}
static inline MetaClass
object_get_meta_class(id object)
{
return ((object!=nil)?(CLS_ISCLASS(object->class_pointer)
?object->class_pointer->class_pointer
:(CLS_ISMETA(object->class_pointer)
?object->class_pointer
:Nil))
:Nil);
}
static inline Class
object_get_super_class
(id object)
{
return ((object!=nil)?(CLS_ISCLASS(object->class_pointer)
?object->class_pointer->super_class
:(CLS_ISMETA(object->class_pointer)
?((Class)object)->super_class
:Nil))
:Nil);
}
static inline BOOL
object_is_class (id object)
{
return ((object != nil) && CLS_ISMETA (object->class_pointer));
}
static inline BOOL
object_is_instance (id object)
{
return ((object != nil) && CLS_ISCLASS (object->class_pointer));
}
static inline BOOL
object_is_meta_class (id object)
{
return ((object != nil)
&& !object_is_instance (object)
&& !object_is_class (object));
}
struct sarray*
objc_get_uninstalled_dtable(void);
#ifdef __cplusplus
}
#endif /* __cplusplus */
#endif /* not __objc_api_INCLUDE_GNU */

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@ -1,47 +0,0 @@
/* GNU Objective-C Extern helpers for Win32.
Copyright (C) 2004 Free Software Foundation, Inc.
This file is part of GCC.
GCC is free software; you can redistribute it and/or modify it
under the terms of the GNU General Public License as published by the
Free Software Foundation; either version 2, or (at your option) any
later version.
GCC is distributed in the hope that it will be useful, but WITHOUT
ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public
License for more details.
You should have received a copy of the GNU General Public License
along with GCC; see the file COPYING. If not, write to
the Free Software Foundation, 51 Franklin Street, Fifth Floor,
Boston, MA 02110-1301, USA. */
/* As a special exception, if you link this library with files compiled
with GCC to produce an executable, this does not cause the resulting
executable to be covered by the GNU General Public License. This
exception does not however invalidate any other reasons why the
executable file might be covered by the GNU General Public License. */
#ifndef __objc_decls_INCLUDE_GNU
#define __objc_decls_INCLUDE_GNU
#if defined (_WIN32) || defined (__WIN32__) || defined (WIN32)
# ifdef DLL_EXPORT /* defined by libtool (if required) */
# define objc_EXPORT __declspec(dllexport)
# define objc_DECLARE __declspec(dllexport)
#else
# define objc_EXPORT extern __declspec(dllimport)
# define objc_DECLARE extern __declspec(dllimport)
#endif
#else
# define objc_EXPORT extern
# define objc_DECLARE
#endif
#endif /* __objc_decls_INCLUDE_GNU */

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@ -1,156 +0,0 @@
/* Generic single linked list to keep various information
Copyright (C) 1993, 1994, 1996 Free Software Foundation, Inc.
Contributed by Kresten Krab Thorup.
This file is part of GCC.
GCC is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2, or (at your option)
any later version.
GCC is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with GCC; see the file COPYING. If not, write to
the Free Software Foundation, 51 Franklin Street, Fifth Floor,
Boston, MA 02110-1301, USA. */
/* As a special exception, if you link this library with files compiled with
GCC to produce an executable, this does not cause the resulting executable
to be covered by the GNU General Public License. This exception does not
however invalidate any other reasons why the executable file might be
covered by the GNU General Public License. */
#ifndef __GNU_OBJC_LIST_H
#define __GNU_OBJC_LIST_H
#ifdef __cplusplus
extern "C" {
#endif /* __cplusplus */
struct objc_list {
void *head;
struct objc_list *tail;
};
/* Return a cons cell produced from (head . tail) */
static inline struct objc_list*
list_cons(void* head, struct objc_list* tail)
{
struct objc_list* cell;
cell = (struct objc_list*)objc_malloc(sizeof(struct objc_list));
cell->head = head;
cell->tail = tail;
return cell;
}
/* Return the length of a list, list_length(NULL) returns zero */
static inline int
list_length(struct objc_list* list)
{
int i = 0;
while(list)
{
i += 1;
list = list->tail;
}
return i;
}
/* Return the Nth element of LIST, where N count from zero. If N
larger than the list length, NULL is returned */
static inline void*
list_nth(int indx, struct objc_list* list)
{
while(indx-- != 0)
{
if(list->tail)
list = list->tail;
else
return 0;
}
return list->head;
}
/* Remove the element at the head by replacing it by its successor */
static inline void
list_remove_head(struct objc_list** list)
{
if ((*list)->tail)
{
struct objc_list* tail = (*list)->tail; /* fetch next */
*(*list) = *tail; /* copy next to list head */
objc_free(tail); /* free next */
}
else /* only one element in list */
{
objc_free(*list);
(*list) = 0;
}
}
/* Remove the element with `car' set to ELEMENT */
static inline void
list_remove_elem(struct objc_list** list, void* elem)
{
while (*list) {
if ((*list)->head == elem)
list_remove_head(list);
list = &((*list)->tail);
}
}
/* Map FUNCTION over all elements in LIST */
static inline void
list_mapcar(struct objc_list* list, void(*function)(void*))
{
while(list)
{
(*function)(list->head);
list = list->tail;
}
}
/* Return element that has ELEM as car */
static inline struct objc_list**
list_find(struct objc_list** list, void* elem)
{
while(*list)
{
if ((*list)->head == elem)
return list;
list = &((*list)->tail);
}
return NULL;
}
/* Free list (backwards recursive) */
static void
list_free(struct objc_list* list)
{
if(list)
{
list_free(list->tail);
objc_free(list);
}
}
#ifdef __cplusplus
}
#endif /* __cplusplus */
#endif /* not __GNU_OBJC_LIST_H */

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/* Basic data types for Objective C.
Copyright (C) 1993, 1995, 1996, 2004 Free Software Foundation, Inc.
This file is part of GCC.
GCC is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2, or (at your option)
any later version.
GCC is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with GCC; see the file COPYING. If not, write to
the Free Software Foundation, 51 Franklin Street, Fifth Floor,
Boston, MA 02110-1301, USA. */
/* As a special exception, if you link this library with files
compiled with GCC to produce an executable, this does not cause
the resulting executable to be covered by the GNU General Public License.
This exception does not however invalidate any other reasons why
the executable file might be covered by the GNU General Public License. */
#ifndef __objc_INCLUDE_GNU
#define __objc_INCLUDE_GNU
#ifdef __cplusplus
extern "C" {
#endif
#include <stddef.h>
/*
** Definition of the boolean type.
*/
#ifdef __vxworks
typedef int BOOL;
#else
typedef unsigned char BOOL;
#endif
#define YES (BOOL)1
#define NO (BOOL)0
/*
** Definition of a selector. Selectors themselves are not unique, but
** the sel_id is a unique identifier.
*/
typedef const struct objc_selector
{
void *sel_id;
const char *sel_types;
} *SEL;
inline static BOOL
sel_eq (SEL s1, SEL s2)
{
if (s1 == 0 || s2 == 0)
return s1 == s2;
else
return s1->sel_id == s2->sel_id;
}
/*
** ObjC uses this typedef for untyped instances.
*/
typedef struct objc_object {
struct objc_class* class_pointer;
} *id;
/*
** Definition of method type. When retrieving the implementation of a
** method, this is type of the pointer returned. The idea of the
** definition of IMP is to represent a 'pointer to a general function
** taking an id, a SEL, followed by other unspecified arguments'. You
** must always cast an IMP to a pointer to a function taking the
** appropriate, specific types for that function, before calling it -
** to make sure the appropriate arguments are passed to it. The code
** generated by the compiler to perform method calls automatically
** does this cast inside method calls.
*/
typedef id (*IMP)(id, SEL, ...);
/*
** More simple types...
*/
#define nil (id)0 /* id of Nil instance */
#define Nil (Class)0 /* id of Nil class */
typedef char *STR; /* String alias */
/*
** The compiler generates one of these structures for each class.
**
** This structure is the definition for classes.
**
** This structure is generated by the compiler in the executable and used by
** the run-time during normal messaging operations. Therefore some members
** change type. The compiler generates "char* const" and places a string in
** the following member variables: super_class.
*/
typedef struct objc_class *MetaClass;
typedef struct objc_class *Class;
struct objc_class {
MetaClass class_pointer; /* Pointer to the class's
meta class. */
struct objc_class* super_class; /* Pointer to the super
class. NULL for class
Object. */
const char* name; /* Name of the class. */
long version; /* Unknown. */
unsigned long info; /* Bit mask. See class masks
defined above. */
long instance_size; /* Size in bytes of the class.
The sum of the class
definition and all super
class definitions. */
struct objc_ivar_list* ivars; /* Pointer to a structure that
describes the instance
variables in the class
definition. NULL indicates
no instance variables. Does
not include super class
variables. */
struct objc_method_list* methods; /* Linked list of instance
methods defined for the
class. */
struct sarray * dtable; /* Pointer to instance
method dispatch table. */
struct objc_class* subclass_list; /* Subclasses */
struct objc_class* sibling_class;
struct objc_protocol_list *protocols; /* Protocols conformed to */
void* gc_object_type;
};
#ifndef __OBJC__
typedef struct objc_protocol {
struct objc_class* class_pointer;
char *protocol_name;
struct objc_protocol_list *protocol_list;
struct objc_method_description_list *instance_methods, *class_methods;
} Protocol;
#else /* __OBJC__ */
@class Protocol;
#endif
typedef void* retval_t; /* return value */
typedef void(*apply_t)(void); /* function pointer */
typedef union arglist {
char *arg_ptr;
char arg_regs[sizeof (char*)];
} *arglist_t; /* argument frame */
IMP objc_msg_lookup(id receiver, SEL op);
#ifdef __cplusplus
}
#endif
#endif /* not __objc_INCLUDE_GNU */

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/* GNU Objective C Runtime internal declarations
Copyright (C) 1993, 1995, 1996, 1997, 2002, 2004 Free Software Foundation, Inc.
Contributed by Kresten Krab Thorup
This file is part of GCC.
GCC is free software; you can redistribute it and/or modify it under the
terms of the GNU General Public License as published by the Free Software
Foundation; either version 2, or (at your option) any later version.
GCC is distributed in the hope that it will be useful, but WITHOUT ANY
WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
details.
You should have received a copy of the GNU General Public License along with
GCC; see the file COPYING. If not, write to the Free Software
Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. */
/* As a special exception, if you link this library with files compiled with
GCC to produce an executable, this does not cause the resulting executable
to be covered by the GNU General Public License. This exception does not
however invalidate any other reasons why the executable file might be
covered by the GNU General Public License. */
#ifndef __objc_runtime_INCLUDE_GNU
#define __objc_runtime_INCLUDE_GNU
#include <stdarg.h> /* for varargs and va_list's */
#include <stdio.h>
#include <ctype.h>
#include <stddef.h> /* so noone else will get system versions */
#include <assert.h>
#include "objc.h" /* core data types */
#include "objc-api.h" /* runtime api functions */
#include "thr.h" /* thread and mutex support */
#include "hash.h" /* hash structures */
#include "objc-list.h" /* linear lists */
#ifdef __cplusplus
extern "C" {
#endif /* __cplusplus */
extern void __objc_add_class_to_hash(Class); /* (objc-class.c) */
extern void __objc_init_selector_tables(void); /* (objc-sel.c) */
extern void __objc_init_class_tables(void); /* (objc-class.c) */
extern void __objc_init_dispatch_tables(void); /* (objc-dispatch.c) */
extern void __objc_install_premature_dtable(Class); /* (objc-dispatch.c) */
extern void __objc_resolve_class_links(void); /* (objc-class.c) */
extern void __objc_register_selectors_from_class(Class); /* (objc-sel.c) */
extern void __objc_register_selectors_from_list (MethodList_t); /* (selector.c) */
extern void __objc_update_dispatch_table_for_class (Class);/* (objc-msg.c) */
extern int __objc_init_thread_system(void); /* thread.c */
extern int __objc_fini_thread_system(void); /* thread.c */
extern void __objc_print_dtable_stats(void); /* sendmsg.c */
extern void class_add_method_list(Class, MethodList_t);
/* Registering instance methods as class methods for root classes */
extern void __objc_register_instance_methods_to_class(Class);
extern Method_t search_for_method_in_list(MethodList_t list, SEL op);
/* True when class links has been resolved */
extern BOOL __objc_class_links_resolved;
/* Number of selectors stored in each of the selector tables */
extern unsigned int __objc_selector_max_index;
/* Mutex locking __objc_selector_max_index and its arrays. */
extern objc_mutex_t __objc_runtime_mutex;
/* Number of threads which are alive. */
extern int __objc_runtime_threads_alive;
#ifdef DEBUG
#define DEBUG_PRINTF(format, args...) printf (format, ## args)
#else
#define DEBUG_PRINTF(format, args...)
#endif
BOOL __objc_responds_to (id object, SEL sel); /* for internal use only! */
SEL __sel_register_typed_name (const char*, const char*,
struct objc_selector*, BOOL is_const);
extern void __objc_generate_gc_type_description (Class);
#ifdef __cplusplus
}
#endif /* __cplusplus */
#endif /* not __objc_runtime_INCLUDE_GNU */

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/* Sparse Arrays for Objective C dispatch tables
Copyright (C) 1993, 1995, 1996, 2004 Free Software Foundation, Inc.
Contributed by Kresten Krab Thorup.
This file is part of GCC.
GCC is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2, or (at your option)
any later version.
GCC is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with GCC; see the file COPYING. If not, write to
the Free Software Foundation, 51 Franklin Street, Fifth Floor,
Boston, MA 02110-1301, USA. */
/* As a special exception, if you link this library with files
compiled with GCC to produce an executable, this does not cause
the resulting executable to be covered by the GNU General Public License.
This exception does not however invalidate any other reasons why
the executable file might be covered by the GNU General Public License. */
#ifndef __sarray_INCLUDE_GNU
#define __sarray_INCLUDE_GNU
#include "thr.h"
#define OBJC_SPARSE2 /* 2-level sparse array */
/* #define OBJC_SPARSE3 */ /* 3-level sparse array */
#ifdef OBJC_SPARSE2
extern const char* __objc_sparse2_id;
#endif
#ifdef OBJC_SPARSE3
extern const char* __objc_sparse3_id;
#endif
#include <stddef.h>
#include <assert.h>
#ifdef __cplusplus
extern "C" {
#endif /* __cplusplus */
extern int nbuckets; /* for stats */
extern int nindices;
extern int narrays;
extern int idxsize;
/* An unsigned integer of same size as a pointer */
#define SIZET_BITS (sizeof(size_t)*8)
#if defined(__sparc__) || defined(OBJC_SPARSE2)
#define PRECOMPUTE_SELECTORS
#endif
#ifdef OBJC_SPARSE3
/* Buckets are 8 words each */
#define BUCKET_BITS 3
#define BUCKET_SIZE (1<<BUCKET_BITS)
#define BUCKET_MASK (BUCKET_SIZE-1)
/* Indices are 16 words each */
#define INDEX_BITS 4
#define INDEX_SIZE (1<<INDEX_BITS)
#define INDEX_MASK (INDEX_SIZE-1)
#define INDEX_CAPACITY (BUCKET_SIZE*INDEX_SIZE)
#else /* OBJC_SPARSE2 */
/* Buckets are 32 words each */
#define BUCKET_BITS 5
#define BUCKET_SIZE (1<<BUCKET_BITS)
#define BUCKET_MASK (BUCKET_SIZE-1)
#endif /* OBJC_SPARSE2 */
typedef size_t sidx;
#ifdef PRECOMPUTE_SELECTORS
struct soffset {
#ifdef OBJC_SPARSE3
unsigned int unused : SIZET_BITS/4;
unsigned int eoffset : SIZET_BITS/4;
unsigned int boffset : SIZET_BITS/4;
unsigned int ioffset : SIZET_BITS/4;
#else /* OBJC_SPARSE2 */
#ifdef __sparc__
unsigned long boffset : (SIZET_BITS - 2) - BUCKET_BITS;
unsigned int eoffset : BUCKET_BITS;
unsigned int unused : 2;
#else
unsigned int boffset : SIZET_BITS/2;
unsigned int eoffset : SIZET_BITS/2;
#endif
#endif /* OBJC_SPARSE2 */
};
union sofftype {
struct soffset off;
sidx idx;
};
#endif /* not PRECOMPUTE_SELECTORS */
union sversion {
int version;
void *next_free;
};
struct sbucket {
void* elems[BUCKET_SIZE]; /* elements stored in array */
union sversion version; /* used for copy-on-write */
};
#ifdef OBJC_SPARSE3
struct sindex {
struct sbucket* buckets[INDEX_SIZE];
union sversion version; /* used for copy-on-write */
};
#endif /* OBJC_SPARSE3 */
struct sarray {
#ifdef OBJC_SPARSE3
struct sindex** indices;
struct sindex* empty_index;
#else /* OBJC_SPARSE2 */
struct sbucket** buckets;
#endif /* OBJC_SPARSE2 */
struct sbucket* empty_bucket;
union sversion version; /* used for copy-on-write */
short ref_count;
struct sarray* is_copy_of;
size_t capacity;
};
struct sarray* sarray_new(int, void* default_element);
void sarray_free(struct sarray*);
struct sarray* sarray_lazy_copy(struct sarray*);
void sarray_realloc(struct sarray*, int new_size);
void sarray_at_put(struct sarray*, sidx indx, void* elem);
void sarray_at_put_safe(struct sarray*, sidx indx, void* elem);
struct sarray* sarray_hard_copy(struct sarray*); /* ... like the name? */
void sarray_remove_garbage(void);
#ifdef PRECOMPUTE_SELECTORS
/* Transform soffset values to ints and vica verca */
static inline unsigned int
soffset_decode(sidx indx)
{
union sofftype x;
x.idx = indx;
#ifdef OBJC_SPARSE3
return x.off.eoffset
+ (x.off.boffset*BUCKET_SIZE)
+ (x.off.ioffset*INDEX_CAPACITY);
#else /* OBJC_SPARSE2 */
return x.off.eoffset + (x.off.boffset*BUCKET_SIZE);
#endif /* OBJC_SPARSE2 */
}
static inline sidx
soffset_encode(size_t offset)
{
union sofftype x;
x.off.eoffset = offset%BUCKET_SIZE;
#ifdef OBJC_SPARSE3
x.off.boffset = (offset/BUCKET_SIZE)%INDEX_SIZE;
x.off.ioffset = offset/INDEX_CAPACITY;
#else /* OBJC_SPARSE2 */
x.off.boffset = offset/BUCKET_SIZE;
#endif
return (sidx)x.idx;
}
#else /* not PRECOMPUTE_SELECTORS */
static inline size_t
soffset_decode(sidx indx)
{
return indx;
}
static inline sidx
soffset_encode(size_t offset)
{
return offset;
}
#endif /* not PRECOMPUTE_SELECTORS */
/* Get element from the Sparse array `array' at offset `indx' */
static inline void* sarray_get(struct sarray* array, sidx indx)
{
#ifdef PRECOMPUTE_SELECTORS
union sofftype x;
x.idx = indx;
#ifdef OBJC_SPARSE3
return
array->
indices[x.off.ioffset]->
buckets[x.off.boffset]->
elems[x.off.eoffset];
#else /* OBJC_SPARSE2 */
return array->buckets[x.off.boffset]->elems[x.off.eoffset];
#endif /* OBJC_SPARSE2 */
#else /* not PRECOMPUTE_SELECTORS */
#ifdef OBJC_SPARSE3
return array->
indices[indx/INDEX_CAPACITY]->
buckets[(indx/BUCKET_SIZE)%INDEX_SIZE]->
elems[indx%BUCKET_SIZE];
#else /* OBJC_SPARSE2 */
return array->buckets[indx/BUCKET_SIZE]->elems[indx%BUCKET_SIZE];
#endif /* not OBJC_SPARSE3 */
#endif /* not PRECOMPUTE_SELECTORS */
}
static inline void* sarray_get_safe(struct sarray* array, sidx indx)
{
if(soffset_decode(indx) < array->capacity)
return sarray_get(array, indx);
else
return (array->empty_bucket->elems[0]);
}
#ifdef __cplusplus
}
#endif /* __cplusplus */
#endif /* __sarray_INCLUDE_GNU */

153
contrib/libobjc/objc/thr.h
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@ -1,153 +0,0 @@
/* Thread and mutex controls for Objective C.
Copyright (C) 1996, 1997, 2002, 2004 Free Software Foundation, Inc.
Contributed by Galen C. Hunt (gchunt@cs.rochester.edu)
This file is part of GCC.
GCC is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2, or (at your option)
any later version.
GCC is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
GCC is free software; you can redistribute it and/or modify it under the
terms of the GNU General Public License as published by the Free Software
Foundation; either version 2, or (at your option) any later version.
GCC is distributed in the hope that it will be useful, but WITHOUT ANY
WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
details.
You should have received a copy of the GNU General Public License along with
GCC; see the file COPYING. If not, write to the Free Software
Foundation, 51 Franklin Street, Fifth Floor,
Boston, MA 02110-1301, USA. */
/* As a special exception, if you link this library with files
compiled with GCC to produce an executable, this does not cause
the resulting executable to be covered by the GNU General Public License.
This exception does not however invalidate any other reasons why
the executable file might be covered by the GNU General Public License. */
#ifndef __thread_INCLUDE_GNU
#define __thread_INCLUDE_GNU
#include "objc.h"
#ifdef __cplusplus
extern "C" {
#endif /* __cplusplus */
/*************************************************************************
* Universal static variables:
*/
extern int __objc_thread_exit_status; /* Global exit status. */
/********
* Thread safe implementation types and functions.
*/
/* Thread priorities */
#define OBJC_THREAD_INTERACTIVE_PRIORITY 2
#define OBJC_THREAD_BACKGROUND_PRIORITY 1
#define OBJC_THREAD_LOW_PRIORITY 0
/* A thread */
typedef void * objc_thread_t;
/* This structure represents a single mutual exclusion lock. */
struct objc_mutex
{
volatile objc_thread_t owner; /* Id of thread that owns. */
volatile int depth; /* # of acquires. */
void * backend; /* Specific to backend */
};
typedef struct objc_mutex *objc_mutex_t;
/* This structure represents a single condition mutex */
struct objc_condition
{
void * backend; /* Specific to backend */
};
typedef struct objc_condition *objc_condition_t;
/* Frontend mutex functions */
objc_mutex_t objc_mutex_allocate (void);
int objc_mutex_deallocate (objc_mutex_t mutex);
int objc_mutex_lock (objc_mutex_t mutex);
int objc_mutex_unlock (objc_mutex_t mutex);
int objc_mutex_trylock (objc_mutex_t mutex);
/* Frontend condition mutex functions */
objc_condition_t objc_condition_allocate (void);
int objc_condition_deallocate (objc_condition_t condition);
int objc_condition_wait (objc_condition_t condition, objc_mutex_t mutex);
int objc_condition_signal (objc_condition_t condition);
int objc_condition_broadcast (objc_condition_t condition);
/* Frontend thread functions */
objc_thread_t objc_thread_detach (SEL selector, id object, id argument);
void objc_thread_yield (void);
int objc_thread_exit (void);
int objc_thread_set_priority (int priority);
int objc_thread_get_priority (void);
void * objc_thread_get_data (void);
int objc_thread_set_data (void *value);
objc_thread_t objc_thread_id (void);
void objc_thread_add (void);
void objc_thread_remove (void);
/*
Use this to set the hook function that will be called when the
runtime initially becomes multi threaded.
The hook function is only called once, meaning only when the
2nd thread is spawned, not for each and every thread.
It returns the previous hook function or NULL if there is none.
A program outside of the runtime could set this to some function so
it can be informed; for example, the GNUstep Base Library sets it
so it can implement the NSBecomingMultiThreaded notification.
*/
typedef void (*objc_thread_callback) (void);
objc_thread_callback objc_set_thread_callback (objc_thread_callback func);
/* Backend initialization functions */
int __objc_init_thread_system (void);
int __objc_fini_thread_system (void);
/* Backend mutex functions */
int __objc_mutex_allocate (objc_mutex_t mutex);
int __objc_mutex_deallocate (objc_mutex_t mutex);
int __objc_mutex_lock (objc_mutex_t mutex);
int __objc_mutex_trylock (objc_mutex_t mutex);
int __objc_mutex_unlock (objc_mutex_t mutex);
/* Backend condition mutex functions */
int __objc_condition_allocate (objc_condition_t condition);
int __objc_condition_deallocate (objc_condition_t condition);
int __objc_condition_wait (objc_condition_t condition, objc_mutex_t mutex);
int __objc_condition_broadcast (objc_condition_t condition);
int __objc_condition_signal (objc_condition_t condition);
/* Backend thread functions */
objc_thread_t __objc_thread_detach (void (*func) (void *arg), void *arg);
int __objc_thread_set_priority (int priority);
int __objc_thread_get_priority (void);
void __objc_thread_yield (void);
int __objc_thread_exit (void);
objc_thread_t __objc_thread_id (void);
int __objc_thread_set_data (void *value);
void * __objc_thread_get_data (void);
#ifdef __cplusplus
}
#endif /* __cplusplus */
#endif /* not __thread_INCLUDE_GNU */

141
contrib/libobjc/objc/typedstream.h
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@ -1,141 +0,0 @@
/* GNU Objective-C Typed Streams interface.
Copyright (C) 1993, 1995, 2004 Free Software Foundation, Inc.
This file is part of GCC.
GCC is free software; you can redistribute it and/or modify it
under the terms of the GNU General Public License as published by the
Free Software Foundation; either version 2, or (at your option) any
later version.
GCC is distributed in the hope that it will be useful, but WITHOUT
ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public
License for more details.
You should have received a copy of the GNU General Public License
along with GCC; see the file COPYING. If not, write to
the Free Software Foundation, 51 Franklin Street, Fifth Floor,
Boston, MA 02110-1301, USA. */
/* As a special exception, if you link this library with files compiled
with GCC to produce an executable, this does not cause the resulting
executable to be covered by the GNU General Public License. This
exception does not however invalidate any other reasons why the
executable file might be covered by the GNU General Public License. */
#ifndef __typedstream_INCLUDE_GNU
#define __typedstream_INCLUDE_GNU
#include "objc.h"
#include "hash.h"
#include <stdio.h>
#ifdef __cplusplus
extern "C" {
#endif /* __cplusplus */
typedef int (*objc_typed_read_func)(void*, char*, int);
typedef int (*objc_typed_write_func)(void*, const char*, int);
typedef int (*objc_typed_flush_func)(void*);
typedef int (*objc_typed_eof_func)(void*);
#define OBJC_READONLY 0x01
#define OBJC_WRITEONLY 0x02
#define OBJC_MANAGED_STREAM 0x01
#define OBJC_FILE_STREAM 0x02
#define OBJC_MEMORY_STREAM 0x04
#define OBJC_TYPED_STREAM_VERSION 0x01
typedef struct objc_typed_stream {
void* physical;
cache_ptr object_table; /* read/written objects */
cache_ptr stream_table; /* other read/written but shared things.. */
cache_ptr class_table; /* class version mapping */
cache_ptr object_refs; /* forward references */
int mode; /* OBJC_READONLY or OBJC_WRITEONLY */
int type; /* MANAGED, FILE, MEMORY etc bit string */
int version; /* version used when writing */
int writing_root_p;
objc_typed_read_func read;
objc_typed_write_func write;
objc_typed_eof_func eof;
objc_typed_flush_func flush;
} TypedStream;
/* opcode masks */
#define _B_VALUE 0x1fU
#define _B_CODE 0xe0U
#define _B_SIGN 0x10U
#define _B_NUMBER 0x0fU
/* standard opcodes */
#define _B_INVALID 0x00U
#define _B_SINT 0x20U
#define _B_NINT 0x40U
#define _B_SSTR 0x60U
#define _B_NSTR 0x80U
#define _B_RCOMM 0xa0U
#define _B_UCOMM 0xc0U
#define _B_EXT 0xe0U
/* eXtension opcodes */
#define _BX_OBJECT 0x00U
#define _BX_CLASS 0x01U
#define _BX_SEL 0x02U
#define _BX_OBJREF 0x03U
#define _BX_OBJROOT 0x04U
#define _BX_EXT 0x1fU
/*
** Read and write objects as specified by TYPE. All the `last'
** arguments are pointers to the objects to read/write.
*/
int objc_write_type (TypedStream* stream, const char* type, const void* data);
int objc_read_type (TypedStream* stream, const char* type, void* data);
int objc_write_types (TypedStream* stream, const char* type, ...);
int objc_read_types (TypedStream* stream, const char* type, ...);
int objc_write_object_reference (TypedStream* stream, id object);
int objc_write_root_object (TypedStream* stream, id object);
long objc_get_stream_class_version (TypedStream* stream, Class class_type);
/*
** Convenience functions
*/
int objc_write_array (TypedStream* stream, const char* type,
int count, const void* data);
int objc_read_array (TypedStream* stream, const char* type,
int count, void* data);
int objc_write_object (TypedStream* stream, id object);
int objc_read_object (TypedStream* stream, id* object);
/*
** Open a typed stream for reading or writing. MODE may be either of
** OBJC_READONLY or OBJC_WRITEONLY.
*/
TypedStream* objc_open_typed_stream (FILE* physical, int mode);
TypedStream* objc_open_typed_stream_for_file (const char* file_name, int mode);
void objc_close_typed_stream (TypedStream* stream);
BOOL objc_end_of_typed_stream (TypedStream* stream);
void objc_flush_typed_stream (TypedStream* stream);
#ifdef __cplusplus
}
#endif /* __cplusplus */
#endif /* not __typedstream_INCLUDE_GNU */

103
contrib/libobjc/objects.c
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@ -1,103 +0,0 @@
/* GNU Objective C Runtime class related functions
Copyright (C) 1993, 1995, 1996 Free Software Foundation, Inc.
Contributed by Kresten Krab Thorup
This file is part of GCC.
GCC is free software; you can redistribute it and/or modify it under the
terms of the GNU General Public License as published by the Free Software
Foundation; either version 2, or (at your option) any later version.
GCC is distributed in the hope that it will be useful, but WITHOUT ANY
WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
details.
You should have received a copy of the GNU General Public License along with
GCC; see the file COPYING. If not, write to the Free Software
Foundation, 51 Franklin Street, Fifth Floor,
Boston, MA 02110-1301, USA. */
/* As a special exception, if you link this library with files compiled with
GCC to produce an executable, this does not cause the resulting executable
to be covered by the GNU General Public License. This exception does not
however invalidate any other reasons why the executable file might be
covered by the GNU General Public License. */
#include "tconfig.h" /* include defs of bzero for target */
#include "objc/objc.h"
#include "objc/runtime.h" /* the kitchen sink */
#if OBJC_WITH_GC
# include <gc.h>
#endif
id __objc_object_alloc (Class);
id __objc_object_dispose (id);
id __objc_object_copy (id);
id (*_objc_object_alloc) (Class) = __objc_object_alloc; /* !T:SINGLE */
id (*_objc_object_dispose) (id) = __objc_object_dispose; /* !T:SINGLE */
id (*_objc_object_copy) (id) = __objc_object_copy; /* !T:SINGLE */
id
class_create_instance (Class class)
{
id new = nil;
#if OBJC_WITH_GC
if (CLS_ISCLASS (class))
new = (id) GC_malloc_explicitly_typed (class->instance_size,
class->gc_object_type);
#else
if (CLS_ISCLASS (class))
new = (*_objc_object_alloc) (class);
#endif
if (new != nil)
{
memset (new, 0, class->instance_size);
new->class_pointer = class;
}
return new;
}
id
object_copy (id object)
{
if ((object != nil) && CLS_ISCLASS (object->class_pointer))
return (*_objc_object_copy) (object);
else
return nil;
}
id
object_dispose (id object)
{
if ((object != nil) && CLS_ISCLASS (object->class_pointer))
{
if (_objc_object_dispose)
(*_objc_object_dispose) (object);
else
objc_free (object);
}
return nil;
}
id __objc_object_alloc (Class class)
{
return (id) objc_malloc (class->instance_size);
}
id __objc_object_dispose (id object)
{
objc_free (object);
return 0;
}
id __objc_object_copy (id object)
{
id copy = class_create_instance (object->class_pointer);
memcpy (copy, object, object->class_pointer->instance_size);
return copy;
}

518
contrib/libobjc/sarray.c
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@ -1,518 +0,0 @@
/* Sparse Arrays for Objective C dispatch tables
Copyright (C) 1993, 1995, 1996, 2002, 2004 Free Software Foundation, Inc.
This file is part of GCC.
GCC is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2, or (at your option)
any later version.
GCC is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with GCC; see the file COPYING. If not, write to
the Free Software Foundation, 51 Franklin Street, Fifth Floor,
Boston, MA 02110-1301, USA. */
/* As a special exception, if you link this library with files
compiled with GCC to produce an executable, this does not cause
the resulting executable to be covered by the GNU General Public License.
This exception does not however invalidate any other reasons why
the executable file might be covered by the GNU General Public License. */
#include "objc/sarray.h"
#include "objc/runtime.h"
#include <stdio.h>
#include "assert.h"
int nbuckets = 0; /* !T:MUTEX */
int nindices = 0; /* !T:MUTEX */
int narrays = 0; /* !T:MUTEX */
int idxsize = 0; /* !T:MUTEX */
static void *first_free_data = NULL; /* !T:MUTEX */
#ifdef OBJC_SPARSE2
const char *__objc_sparse2_id = "2 level sparse indices";
#endif
#ifdef OBJC_SPARSE3
const char *__objc_sparse3_id = "3 level sparse indices";
#endif
/* This function removes any structures left over from free operations
that were not safe in a multi-threaded environment. */
void
sarray_remove_garbage (void)
{
void **vp;
void *np;
objc_mutex_lock (__objc_runtime_mutex);
vp = first_free_data;
first_free_data = NULL;
while (vp) {
np = *vp;
objc_free (vp);
vp = np;
}
objc_mutex_unlock (__objc_runtime_mutex);
}
/* Free a block of dynamically allocated memory. If we are in multi-threaded
mode, it is ok to free it. If not, we add it to the garbage heap to be
freed later. */
static void
sarray_free_garbage (void *vp)
{
objc_mutex_lock (__objc_runtime_mutex);
if (__objc_runtime_threads_alive == 1) {
objc_free (vp);
if (first_free_data)
sarray_remove_garbage ();
}
else {
*(void **)vp = first_free_data;
first_free_data = vp;
}
objc_mutex_unlock (__objc_runtime_mutex);
}
/* sarray_at_put : copies data in such a way as to be thread reader safe. */
void
sarray_at_put (struct sarray *array, sidx index, void *element)
{
#ifdef OBJC_SPARSE3
struct sindex **the_index;
struct sindex *new_index;
#endif
struct sbucket **the_bucket;
struct sbucket *new_bucket;
#ifdef OBJC_SPARSE3
size_t ioffset;
#endif
size_t boffset;
size_t eoffset;
#ifdef PRECOMPUTE_SELECTORS
union sofftype xx;
xx.idx = index;
#ifdef OBJC_SPARSE3
ioffset = xx.off.ioffset;
#endif
boffset = xx.off.boffset;
eoffset = xx.off.eoffset;
#else /* not PRECOMPUTE_SELECTORS */
#ifdef OBJC_SPARSE3
ioffset = index/INDEX_CAPACITY;
boffset = (index/BUCKET_SIZE)%INDEX_SIZE;
eoffset = index%BUCKET_SIZE;
#else
boffset = index/BUCKET_SIZE;
eoffset = index%BUCKET_SIZE;
#endif
#endif /* not PRECOMPUTE_SELECTORS */
assert (soffset_decode (index) < array->capacity); /* Range check */
#ifdef OBJC_SPARSE3
the_index = &(array->indices[ioffset]);
the_bucket = &((*the_index)->buckets[boffset]);
#else
the_bucket = &(array->buckets[boffset]);
#endif
if ((*the_bucket)->elems[eoffset] == element)
return; /* great! we just avoided a lazy copy */
#ifdef OBJC_SPARSE3
/* First, perform lazy copy/allocation of index if needed */
if ((*the_index) == array->empty_index) {
/* The index was previously empty, allocate a new */
new_index = (struct sindex *) objc_malloc (sizeof (struct sindex));
memcpy (new_index, array->empty_index, sizeof (struct sindex));
new_index->version.version = array->version.version;
*the_index = new_index; /* Prepared for install. */
the_bucket = &((*the_index)->buckets[boffset]);
nindices += 1;
} else if ((*the_index)->version.version != array->version.version) {
/* This index must be lazy copied */
struct sindex *old_index = *the_index;
new_index = (struct sindex *) objc_malloc (sizeof (struct sindex));
memcpy (new_index, old_index, sizeof (struct sindex));
new_index->version.version = array->version.version;
*the_index = new_index; /* Prepared for install. */
the_bucket = &((*the_index)->buckets[boffset]);
nindices += 1;
}
#endif /* OBJC_SPARSE3 */
/* next, perform lazy allocation/copy of the bucket if needed */
if ((*the_bucket) == array->empty_bucket) {
/* The bucket was previously empty (or something like that), */
/* allocate a new. This is the effect of `lazy' allocation */
new_bucket = (struct sbucket *) objc_malloc (sizeof (struct sbucket));
memcpy ((void *) new_bucket, (const void *) array->empty_bucket,
sizeof (struct sbucket));
new_bucket->version.version = array->version.version;
*the_bucket = new_bucket; /* Prepared for install. */
nbuckets += 1;
} else if ((*the_bucket)->version.version != array->version.version) {
/* Perform lazy copy. */
struct sbucket *old_bucket = *the_bucket;
new_bucket = (struct sbucket *) objc_malloc (sizeof (struct sbucket));
memcpy (new_bucket, old_bucket, sizeof (struct sbucket));
new_bucket->version.version = array->version.version;
*the_bucket = new_bucket; /* Prepared for install. */
nbuckets += 1;
}
(*the_bucket)->elems[eoffset] = element;
}
void
sarray_at_put_safe (struct sarray *array, sidx index, void *element)
{
if (soffset_decode (index) >= array->capacity)
sarray_realloc (array, soffset_decode (index) + 1);
sarray_at_put (array, index, element);
}
struct sarray *
sarray_new (int size, void *default_element)
{
struct sarray *arr;
#ifdef OBJC_SPARSE3
size_t num_indices = ((size - 1)/(INDEX_CAPACITY)) + 1;
struct sindex **new_indices;
#else /* OBJC_SPARSE2 */
size_t num_indices = ((size - 1)/BUCKET_SIZE) + 1;
struct sbucket **new_buckets;
#endif
size_t counter;
assert (size > 0);
/* Allocate core array */
arr = (struct sarray *) objc_malloc (sizeof (struct sarray));
arr->version.version = 0;
/* Initialize members */
#ifdef OBJC_SPARSE3
arr->capacity = num_indices*INDEX_CAPACITY;
new_indices = (struct sindex **)
objc_malloc (sizeof (struct sindex *) * num_indices);
arr->empty_index = (struct sindex *) objc_malloc (sizeof (struct sindex));
arr->empty_index->version.version = 0;
narrays += 1;
idxsize += num_indices;
nindices += 1;
#else /* OBJC_SPARSE2 */
arr->capacity = num_indices*BUCKET_SIZE;
new_buckets = (struct sbucket **)
objc_malloc (sizeof (struct sbucket *) * num_indices);
narrays += 1;
idxsize += num_indices;
#endif
arr->empty_bucket = (struct sbucket *) objc_malloc (sizeof (struct sbucket));
arr->empty_bucket->version.version = 0;
nbuckets += 1;
arr->ref_count = 1;
arr->is_copy_of = (struct sarray *) 0;
for (counter = 0; counter < BUCKET_SIZE; counter++)
arr->empty_bucket->elems[counter] = default_element;
#ifdef OBJC_SPARSE3
for (counter = 0; counter < INDEX_SIZE; counter++)
arr->empty_index->buckets[counter] = arr->empty_bucket;
for (counter = 0; counter < num_indices; counter++)
new_indices[counter] = arr->empty_index;
#else /* OBJC_SPARSE2 */
for (counter = 0; counter < num_indices; counter++)
new_buckets[counter] = arr->empty_bucket;
#endif
#ifdef OBJC_SPARSE3
arr->indices = new_indices;
#else /* OBJC_SPARSE2 */
arr->buckets = new_buckets;
#endif
return arr;
}
/* Reallocate the sparse array to hold `newsize' entries
Note: We really allocate and then free. We have to do this to ensure that
any concurrent readers notice the update. */
void
sarray_realloc (struct sarray *array, int newsize)
{
#ifdef OBJC_SPARSE3
size_t old_max_index = (array->capacity - 1)/INDEX_CAPACITY;
size_t new_max_index = ((newsize - 1)/INDEX_CAPACITY);
size_t rounded_size = (new_max_index + 1) * INDEX_CAPACITY;
struct sindex **new_indices;
struct sindex **old_indices;
#else /* OBJC_SPARSE2 */
size_t old_max_index = (array->capacity - 1)/BUCKET_SIZE;
size_t new_max_index = ((newsize - 1)/BUCKET_SIZE);
size_t rounded_size = (new_max_index + 1) * BUCKET_SIZE;
struct sbucket **new_buckets;
struct sbucket **old_buckets;
#endif
size_t counter;
assert (newsize > 0);
/* The size is the same, just ignore the request */
if (rounded_size <= array->capacity)
return;
assert (array->ref_count == 1); /* stop if lazy copied... */
/* We are asked to extend the array -- allocate new bucket table, */
/* and insert empty_bucket in newly allocated places. */
if (rounded_size > array->capacity)
{
#ifdef OBJC_SPARSE3
new_max_index += 4;
rounded_size = (new_max_index + 1) * INDEX_CAPACITY;
#else /* OBJC_SPARSE2 */
new_max_index += 4;
rounded_size = (new_max_index + 1) * BUCKET_SIZE;
#endif
/* update capacity */
array->capacity = rounded_size;
#ifdef OBJC_SPARSE3
/* alloc to force re-read by any concurrent readers. */
old_indices = array->indices;
new_indices = (struct sindex **)
objc_malloc ((new_max_index + 1) * sizeof (struct sindex *));
#else /* OBJC_SPARSE2 */
old_buckets = array->buckets;
new_buckets = (struct sbucket **)
objc_malloc ((new_max_index + 1) * sizeof (struct sbucket *));
#endif
/* copy buckets below old_max_index (they are still valid) */
for (counter = 0; counter <= old_max_index; counter++ ) {
#ifdef OBJC_SPARSE3
new_indices[counter] = old_indices[counter];
#else /* OBJC_SPARSE2 */
new_buckets[counter] = old_buckets[counter];
#endif
}
#ifdef OBJC_SPARSE3
/* reset entries above old_max_index to empty_bucket */
for (counter = old_max_index + 1; counter <= new_max_index; counter++)
new_indices[counter] = array->empty_index;
#else /* OBJC_SPARSE2 */
/* reset entries above old_max_index to empty_bucket */
for (counter = old_max_index + 1; counter <= new_max_index; counter++)
new_buckets[counter] = array->empty_bucket;
#endif
#ifdef OBJC_SPARSE3
/* install the new indices */
array->indices = new_indices;
#else /* OBJC_SPARSE2 */
array->buckets = new_buckets;
#endif
#ifdef OBJC_SPARSE3
/* free the old indices */
sarray_free_garbage (old_indices);
#else /* OBJC_SPARSE2 */
sarray_free_garbage (old_buckets);
#endif
idxsize += (new_max_index-old_max_index);
return;
}
}
/* Free a sparse array allocated with sarray_new */
void
sarray_free (struct sarray *array) {
#ifdef OBJC_SPARSE3
size_t old_max_index = (array->capacity - 1)/INDEX_CAPACITY;
struct sindex **old_indices;
#else
size_t old_max_index = (array->capacity - 1)/BUCKET_SIZE;
struct sbucket **old_buckets;
#endif
size_t counter = 0;
assert (array->ref_count != 0); /* Freed multiple times!!! */
if (--(array->ref_count) != 0) /* There exists copies of me */
return;
#ifdef OBJC_SPARSE3
old_indices = array->indices;
#else
old_buckets = array->buckets;
#endif
/* Free all entries that do not point to empty_bucket */
for (counter = 0; counter <= old_max_index; counter++ ) {
#ifdef OBJC_SPARSE3
struct sindex *idx = old_indices[counter];
if ((idx != array->empty_index) &&
(idx->version.version == array->version.version)) {
int c2;
for (c2 = 0; c2 < INDEX_SIZE; c2++) {
struct sbucket *bkt = idx->buckets[c2];
if ((bkt != array->empty_bucket) &&
(bkt->version.version == array->version.version))
{
sarray_free_garbage (bkt);
nbuckets -= 1;
}
}
sarray_free_garbage (idx);
nindices -= 1;
}
#else /* OBJC_SPARSE2 */
struct sbucket *bkt = array->buckets[counter];
if ((bkt != array->empty_bucket) &&
(bkt->version.version == array->version.version))
{
sarray_free_garbage (bkt);
nbuckets -= 1;
}
#endif
}
#ifdef OBJC_SPARSE3
/* free empty_index */
if (array->empty_index->version.version == array->version.version) {
sarray_free_garbage (array->empty_index);
nindices -= 1;
}
#endif
/* free empty_bucket */
if (array->empty_bucket->version.version == array->version.version) {
sarray_free_garbage (array->empty_bucket);
nbuckets -= 1;
}
idxsize -= (old_max_index + 1);
narrays -= 1;
#ifdef OBJC_SPARSE3
/* free bucket table */
sarray_free_garbage (array->indices);
#else
/* free bucket table */
sarray_free_garbage (array->buckets);
#endif
/* If this is a copy of another array, we free it (which might just
* decrement its reference count so it will be freed when no longer in use).
*/
if (array->is_copy_of)
sarray_free (array->is_copy_of);
/* free array */
sarray_free_garbage (array);
}
/* This is a lazy copy. Only the core of the structure is actually */
/* copied. */
struct sarray *
sarray_lazy_copy (struct sarray *oarr)
{
struct sarray *arr;
#ifdef OBJC_SPARSE3
size_t num_indices = ((oarr->capacity - 1)/INDEX_CAPACITY) + 1;
struct sindex **new_indices;
#else /* OBJC_SPARSE2 */
size_t num_indices = ((oarr->capacity - 1)/BUCKET_SIZE) + 1;
struct sbucket **new_buckets;
#endif
/* Allocate core array */
arr = (struct sarray *) objc_malloc (sizeof (struct sarray)); /* !!! */
arr->version.version = oarr->version.version + 1;
#ifdef OBJC_SPARSE3
arr->empty_index = oarr->empty_index;
#endif
arr->empty_bucket = oarr->empty_bucket;
arr->ref_count = 1;
oarr->ref_count += 1;
arr->is_copy_of = oarr;
arr->capacity = oarr->capacity;
#ifdef OBJC_SPARSE3
/* Copy bucket table */
new_indices = (struct sindex **)
objc_malloc (sizeof (struct sindex *) * num_indices);
memcpy (new_indices, oarr->indices, sizeof (struct sindex *) * num_indices);
arr->indices = new_indices;
#else
/* Copy bucket table */
new_buckets = (struct sbucket **)
objc_malloc (sizeof (struct sbucket *) * num_indices);
memcpy (new_buckets, oarr->buckets, sizeof (struct sbucket *) * num_indices);
arr->buckets = new_buckets;
#endif
idxsize += num_indices;
narrays += 1;
return arr;
}

490
contrib/libobjc/selector.c
View File

@ -1,490 +0,0 @@
/* GNU Objective C Runtime selector related functions
Copyright (C) 1993, 1995, 1996, 1997, 2002, 2004 Free Software Foundation, Inc.
Contributed by Kresten Krab Thorup
This file is part of GCC.
GCC is free software; you can redistribute it and/or modify it under the
terms of the GNU General Public License as published by the Free Software
Foundation; either version 2, or (at your option) any later version.
GCC is distributed in the hope that it will be useful, but WITHOUT ANY
WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
details.
You should have received a copy of the GNU General Public License along with
GCC; see the file COPYING. If not, write to the Free Software
Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. */
/* As a special exception, if you link this library with files compiled with
GCC to produce an executable, this does not cause the resulting executable
to be covered by the GNU General Public License. This exception does not
however invalidate any other reasons why the executable file might be
covered by the GNU General Public License. */
#include "objc/runtime.h"
#include "objc/sarray.h"
#include "objc/encoding.h"
/* Initial selector hash table size. Value doesn't matter much */
#define SELECTOR_HASH_SIZE 128
/* Tables mapping selector names to uid and opposite */
static struct sarray *__objc_selector_array = 0; /* uid -> sel !T:MUTEX */
static struct sarray *__objc_selector_names = 0; /* uid -> name !T:MUTEX */
static cache_ptr __objc_selector_hash = 0; /* name -> uid !T:MUTEX */
/* Number of selectors stored in each of the above tables */
unsigned int __objc_selector_max_index = 0; /* !T:MUTEX */
void __objc_init_selector_tables (void)
{
__objc_selector_array = sarray_new (SELECTOR_HASH_SIZE, 0);
__objc_selector_names = sarray_new (SELECTOR_HASH_SIZE, 0);
__objc_selector_hash
= objc_hash_new (SELECTOR_HASH_SIZE,
(hash_func_type) objc_hash_string,
(compare_func_type) objc_compare_strings);
}
/* This routine is given a class and records all of the methods in its class
structure in the record table. */
void
__objc_register_selectors_from_class (Class class)
{
MethodList_t method_list;
method_list = class->methods;
while (method_list)
{
__objc_register_selectors_from_list (method_list);
method_list = method_list->method_next;
}
}
/* This routine is given a list of methods and records each of the methods in
the record table. This is the routine that does the actual recording
work.
The name and type pointers in the method list must be permanent and
immutable.
*/
void
__objc_register_selectors_from_list (MethodList_t method_list)
{
int i = 0;
objc_mutex_lock (__objc_runtime_mutex);
while (i < method_list->method_count)
{
Method_t method = &method_list->method_list[i];
if (method->method_name)
{
method->method_name
= __sel_register_typed_name ((const char *) method->method_name,
method->method_types, 0, YES);
}
i += 1;
}
objc_mutex_unlock (__objc_runtime_mutex);
}
/* Register instance methods as class methods for root classes */
void __objc_register_instance_methods_to_class (Class class)
{
MethodList_t method_list;
MethodList_t class_method_list;
int max_methods_no = 16;
MethodList_t new_list;
Method_t curr_method;
/* Only if a root class. */
if (class->super_class)
return;
/* Allocate a method list to hold the new class methods */
new_list = objc_calloc (sizeof (struct objc_method_list)
+ sizeof (struct objc_method[max_methods_no]), 1);
method_list = class->methods;
class_method_list = class->class_pointer->methods;
curr_method = &new_list->method_list[0];
/* Iterate through the method lists for the class */
while (method_list)
{
int i;
/* Iterate through the methods from this method list */
for (i = 0; i < method_list->method_count; i++)
{
Method_t mth = &method_list->method_list[i];
if (mth->method_name
&& ! search_for_method_in_list (class_method_list,
mth->method_name))
{
/* This instance method isn't a class method.
Add it into the new_list. */
*curr_method = *mth;
/* Reallocate the method list if necessary */
if (++new_list->method_count == max_methods_no)
new_list =
objc_realloc (new_list, sizeof (struct objc_method_list)
+ sizeof (struct
objc_method[max_methods_no += 16]));
curr_method = &new_list->method_list[new_list->method_count];
}
}
method_list = method_list->method_next;
}
/* If we created any new class methods
then attach the method list to the class */
if (new_list->method_count)
{
new_list =
objc_realloc (new_list, sizeof (struct objc_method_list)
+ sizeof (struct objc_method[new_list->method_count]));
new_list->method_next = class->class_pointer->methods;
class->class_pointer->methods = new_list;
}
else
objc_free(new_list);
__objc_update_dispatch_table_for_class (class->class_pointer);
}
/* Returns YES iff t1 and t2 have same method types, but we ignore
the argframe layout */
BOOL
sel_types_match (const char *t1, const char *t2)
{
if (! t1 || ! t2)
return NO;
while (*t1 && *t2)
{
if (*t1 == '+') t1++;
if (*t2 == '+') t2++;
while (isdigit ((unsigned char) *t1)) t1++;
while (isdigit ((unsigned char) *t2)) t2++;
/* xxx Remove these next two lines when qualifiers are put in
all selectors, not just Protocol selectors. */
t1 = objc_skip_type_qualifiers (t1);
t2 = objc_skip_type_qualifiers (t2);
if (! *t1 && ! *t2)
return YES;
if (*t1 != *t2)
return NO;
t1++;
t2++;
}
return NO;
}
/* return selector representing name */
SEL
sel_get_typed_uid (const char *name, const char *types)
{
struct objc_list *l;
sidx i;
objc_mutex_lock (__objc_runtime_mutex);
i = (sidx) objc_hash_value_for_key (__objc_selector_hash, name);
if (i == 0)
{
objc_mutex_unlock (__objc_runtime_mutex);
return 0;
}
for (l = (struct objc_list *) sarray_get_safe (__objc_selector_array, i);
l; l = l->tail)
{
SEL s = (SEL) l->head;
if (types == 0 || s->sel_types == 0)
{
if (s->sel_types == types)
{
objc_mutex_unlock (__objc_runtime_mutex);
return s;
}
}
else if (sel_types_match (s->sel_types, types))
{
objc_mutex_unlock (__objc_runtime_mutex);
return s;
}
}
objc_mutex_unlock (__objc_runtime_mutex);
return 0;
}
/* Return selector representing name; prefer a selector with non-NULL type */
SEL
sel_get_any_typed_uid (const char *name)
{
struct objc_list *l;
sidx i;
SEL s = NULL;
objc_mutex_lock (__objc_runtime_mutex);
i = (sidx) objc_hash_value_for_key (__objc_selector_hash, name);
if (i == 0)
{
objc_mutex_unlock (__objc_runtime_mutex);
return 0;
}
for (l = (struct objc_list *) sarray_get_safe (__objc_selector_array, i);
l; l = l->tail)
{
s = (SEL) l->head;
if (s->sel_types)
{
objc_mutex_unlock (__objc_runtime_mutex);
return s;
}
}
objc_mutex_unlock (__objc_runtime_mutex);
return s;
}
/* return selector representing name */
SEL
sel_get_any_uid (const char *name)
{
struct objc_list *l;
sidx i;
objc_mutex_lock (__objc_runtime_mutex);
i = (sidx) objc_hash_value_for_key (__objc_selector_hash, name);
if (soffset_decode (i) == 0)
{
objc_mutex_unlock (__objc_runtime_mutex);
return 0;
}
l = (struct objc_list *) sarray_get_safe (__objc_selector_array, i);
objc_mutex_unlock (__objc_runtime_mutex);
if (l == 0)
return 0;
return (SEL) l->head;
}
/* return selector representing name */
SEL
sel_get_uid (const char *name)
{
return sel_register_typed_name (name, 0);
}
/* Get name of selector. If selector is unknown, the empty string ""
is returned */
const char *sel_get_name (SEL selector)
{
const char *ret;
objc_mutex_lock (__objc_runtime_mutex);
if ((soffset_decode ((sidx)selector->sel_id) > 0)
&& (soffset_decode ((sidx)selector->sel_id) <= __objc_selector_max_index))
ret = sarray_get_safe (__objc_selector_names, (sidx) selector->sel_id);
else
ret = 0;
objc_mutex_unlock (__objc_runtime_mutex);
return ret;
}
BOOL
sel_is_mapped (SEL selector)
{
unsigned int idx = soffset_decode ((sidx)selector->sel_id);
return ((idx > 0) && (idx <= __objc_selector_max_index));
}
const char *sel_get_type (SEL selector)
{
if (selector)
return selector->sel_types;
else
return 0;
}
/* The uninstalled dispatch table */
extern struct sarray *__objc_uninstalled_dtable;
/* __sel_register_typed_name allocates lots of struct objc_selector:s
of 8 (16, if pointers are 64 bits) bytes at startup. To reduce the number
of malloc calls and memory lost to malloc overhead, we allocate
objc_selector:s in blocks here. This is only called from
__sel_register_typed_name, and __sel_register_typed_name may only be
called when __objc_runtime_mutex is locked.
Note that the objc_selector:s allocated from __sel_register_typed_name
are never freed.
62 because 62 * sizeof (struct objc_selector) = 496 (992). This should
let malloc add some overhead and use a nice, round 512 (1024) byte chunk.
*/
#define SELECTOR_POOL_SIZE 62
static struct objc_selector *selector_pool;
static int selector_pool_left;
static struct objc_selector *
pool_alloc_selector(void)
{
if (!selector_pool_left)
{
selector_pool = objc_malloc (sizeof (struct objc_selector)
* SELECTOR_POOL_SIZE);
selector_pool_left = SELECTOR_POOL_SIZE;
}
return &selector_pool[--selector_pool_left];
}
/* Store the passed selector name in the selector record and return its
selector value (value returned by sel_get_uid).
Assumes that the calling function has locked down __objc_runtime_mutex. */
/* is_const parameter tells us if the name and types parameters
are really constant or not. If YES then they are constant and
we can just store the pointers. If NO then we need to copy
name and types because the pointers may disappear later on. */
SEL
__sel_register_typed_name (const char *name, const char *types,
struct objc_selector *orig, BOOL is_const)
{
struct objc_selector *j;
sidx i;
struct objc_list *l;
i = (sidx) objc_hash_value_for_key (__objc_selector_hash, name);
if (soffset_decode (i) != 0)
{
for (l = (struct objc_list *) sarray_get_safe (__objc_selector_array, i);
l; l = l->tail)
{
SEL s = (SEL) l->head;
if (types == 0 || s->sel_types == 0)
{
if (s->sel_types == types)
{
if (orig)
{
orig->sel_id = (void *) i;
return orig;
}
else
return s;
}
}
else if (! strcmp (s->sel_types, types))
{
if (orig)
{
orig->sel_id = (void *) i;
return orig;
}
else
return s;
}
}
if (orig)
j = orig;
else
j = pool_alloc_selector ();
j->sel_id = (void *) i;
/* Can we use the pointer or must copy types? Don't copy if NULL */
if ((is_const) || (types == 0))
j->sel_types = (const char *) types;
else {
j->sel_types = (char *) objc_malloc (strlen (types) + 1);
strcpy ((char *) j->sel_types, types);
}
l = (struct objc_list *) sarray_get_safe (__objc_selector_array, i);
}
else
{
__objc_selector_max_index += 1;
i = soffset_encode (__objc_selector_max_index);
if (orig)
j = orig;
else
j = pool_alloc_selector ();
j->sel_id = (void *) i;
/* Can we use the pointer or must copy types? Don't copy if NULL */
if ((is_const) || (types == 0))
j->sel_types = (const char *) types;
else {
j->sel_types = (char *) objc_malloc (strlen (types) + 1);
strcpy ((char *) j->sel_types, types);
}
l = 0;
}
DEBUG_PRINTF ("Record selector %s[%s] as: %ld\n", name, types,
(long) soffset_decode (i));
{
int is_new = (l == 0);
const char *new_name;
/* Can we use the pointer or must copy name? Don't copy if NULL */
if ((is_const) || (name == 0))
new_name = name;
else {
new_name = (char *) objc_malloc (strlen (name) + 1);
strcpy ((char *) new_name, name);
}
l = list_cons ((void *) j, l);
sarray_at_put_safe (__objc_selector_names, i, (void *) new_name);
sarray_at_put_safe (__objc_selector_array, i, (void *) l);
if (is_new)
objc_hash_add (&__objc_selector_hash, (void *) new_name, (void *) i);
}
sarray_realloc (__objc_uninstalled_dtable, __objc_selector_max_index + 1);
return (SEL) j;
}
SEL
sel_register_name (const char *name)
{
SEL ret;
objc_mutex_lock (__objc_runtime_mutex);
/* Assume that name is not constant static memory and needs to be
copied before put into a runtime structure. is_const == NO */
ret = __sel_register_typed_name (name, 0, 0, NO);
objc_mutex_unlock (__objc_runtime_mutex);
return ret;
}
SEL
sel_register_typed_name (const char *name, const char *type)
{
SEL ret;
objc_mutex_lock (__objc_runtime_mutex);
/* Assume that name and type are not constant static memory and need to
be copied before put into a runtime structure. is_const == NO */
ret = __sel_register_typed_name (name, type, 0, NO);
objc_mutex_unlock (__objc_runtime_mutex);
return ret;
}

701
contrib/libobjc/sendmsg.c
View File

@ -1,701 +0,0 @@
/* GNU Objective C Runtime message lookup
Copyright (C) 1993, 1995, 1996, 1997, 1998,
2001, 2002, 2004 Free Software Foundation, Inc.
Contributed by Kresten Krab Thorup
This file is part of GCC.
GCC is free software; you can redistribute it and/or modify it under the
terms of the GNU General Public License as published by the Free Software
Foundation; either version 2, or (at your option) any later version.
GCC is distributed in the hope that it will be useful, but WITHOUT ANY
WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
details.
You should have received a copy of the GNU General Public License along with
GCC; see the file COPYING. If not, write to the Free Software
Foundation, 51 Franklin Street, Fifth Floor,
Boston, MA 02110-1301, USA. */
/* As a special exception, if you link this library with files compiled with
GCC to produce an executable, this does not cause the resulting executable
to be covered by the GNU General Public License. This exception does not
however invalidate any other reasons why the executable file might be
covered by the GNU General Public License. */
/* FIXME: This file has no business including tm.h. */
/* FIXME: This should be using libffi instead of __builtin_apply
and friends. */
#include "tconfig.h"
#include "coretypes.h"
#include "tm.h"
#include "objc/runtime.h"
#include "objc/sarray.h"
#include "objc/encoding.h"
#include "runtime-info.h"
/* This is how we hack STRUCT_VALUE to be 1 or 0. */
#define gen_rtx(args...) 1
#define gen_rtx_MEM(args...) 1
#define gen_rtx_REG(args...) 1
#define rtx int
#if ! defined (STRUCT_VALUE) || STRUCT_VALUE == 0
#define INVISIBLE_STRUCT_RETURN 1
#else
#define INVISIBLE_STRUCT_RETURN 0
#endif
/* The uninstalled dispatch table */
struct sarray *__objc_uninstalled_dtable = 0; /* !T:MUTEX */
/* Hook for method forwarding. If it is set, is invoked to return a
function that performs the real forwarding. Otherwise the libgcc
based functions (__builtin_apply and friends) are used. */
IMP (*__objc_msg_forward) (SEL) = NULL;
/* Send +initialize to class */
static void __objc_send_initialize (Class);
static void __objc_install_dispatch_table_for_class (Class);
/* Forward declare some functions */
static void __objc_init_install_dtable (id, SEL);
/* Various forwarding functions that are used based upon the
return type for the selector.
__objc_block_forward for structures.
__objc_double_forward for floats/doubles.
__objc_word_forward for pointers or types that fit in registers.
*/
static double __objc_double_forward (id, SEL, ...);
static id __objc_word_forward (id, SEL, ...);
typedef struct { id many[8]; } __big;
#if INVISIBLE_STRUCT_RETURN
static __big
#else
static id
#endif
__objc_block_forward (id, SEL, ...);
static Method_t search_for_method_in_hierarchy (Class class, SEL sel);
Method_t search_for_method_in_list (MethodList_t list, SEL op);
id nil_method (id, SEL);
/* Given a selector, return the proper forwarding implementation. */
inline
IMP
__objc_get_forward_imp (SEL sel)
{
/* If a custom forwarding hook was registered, try getting a forwarding
* function from it. */
if (__objc_msg_forward)
{
IMP result;
if ((result = __objc_msg_forward (sel)) != NULL)
return result;
}
/* In all other cases, use the default forwarding functions built using
* __builtin_apply and friends. */
{
const char *t = sel->sel_types;
if (t && (*t == '[' || *t == '(' || *t == '{')
#ifdef OBJC_MAX_STRUCT_BY_VALUE
&& objc_sizeof_type (t) > OBJC_MAX_STRUCT_BY_VALUE
#endif
)
return (IMP)__objc_block_forward;
else if (t && (*t == 'f' || *t == 'd'))
return (IMP)__objc_double_forward;
else
return (IMP)__objc_word_forward;
}
}
/* Given a class and selector, return the selector's implementation. */
inline
IMP
get_imp (Class class, SEL sel)
{
/* In a vanilla implementation we would first check if the dispatch
table is installed. Here instead, to get more speed in the
standard case (that the dispatch table is installed) we first try
to get the imp using brute force. Only if that fails, we do what
we should have been doing from the very beginning, that is, check
if the dispatch table needs to be installed, install it if it's
not installed, and retrieve the imp from the table if it's
installed. */
void *res = sarray_get_safe (class->dtable, (size_t) sel->sel_id);
if (res == 0)
{
/* Not a valid method */
if (class->dtable == __objc_uninstalled_dtable)
{
/* The dispatch table needs to be installed. */
objc_mutex_lock (__objc_runtime_mutex);
/* Double-checked locking pattern: Check
__objc_uninstalled_dtable again in case another thread
installed the dtable while we were waiting for the lock
to be released. */
if (class->dtable == __objc_uninstalled_dtable)
{
__objc_install_dispatch_table_for_class (class);
}
objc_mutex_unlock (__objc_runtime_mutex);
/* Call ourselves with the installed dispatch table
and get the real method */
res = get_imp (class, sel);
}
else
{
/* The dispatch table has been installed. */
/* Get the method from the dispatch table (we try to get it
again in case another thread has installed the dtable just
after we invoked sarray_get_safe, but before we checked
class->dtable == __objc_uninstalled_dtable).
*/
res = sarray_get_safe (class->dtable, (size_t) sel->sel_id);
if (res == 0)
{
/* The dispatch table has been installed, and the method
is not in the dispatch table. So the method just
doesn't exist for the class. Return the forwarding
implementation. */
res = __objc_get_forward_imp (sel);
}
}
}
return res;
}
/* Query if an object can respond to a selector, returns YES if the
object implements the selector otherwise NO. Does not check if the
method can be forwarded. */
inline
BOOL
__objc_responds_to (id object, SEL sel)
{
void *res;
/* Install dispatch table if need be */
if (object->class_pointer->dtable == __objc_uninstalled_dtable)
{
objc_mutex_lock (__objc_runtime_mutex);
if (object->class_pointer->dtable == __objc_uninstalled_dtable)
{
__objc_install_dispatch_table_for_class (object->class_pointer);
}
objc_mutex_unlock (__objc_runtime_mutex);
}
/* Get the method from the dispatch table */
res = sarray_get_safe (object->class_pointer->dtable, (size_t) sel->sel_id);
return (res != 0);
}
/* This is the lookup function. All entries in the table are either a
valid method *or* zero. If zero then either the dispatch table
needs to be installed or it doesn't exist and forwarding is attempted. */
inline
IMP
objc_msg_lookup (id receiver, SEL op)
{
IMP result;
if (receiver)
{
result = sarray_get_safe (receiver->class_pointer->dtable,
(sidx)op->sel_id);
if (result == 0)
{
/* Not a valid method */
if (receiver->class_pointer->dtable == __objc_uninstalled_dtable)
{
/* The dispatch table needs to be installed.
This happens on the very first method call to the class. */
__objc_init_install_dtable (receiver, op);
/* Get real method for this in newly installed dtable */
result = get_imp (receiver->class_pointer, op);
}
else
{
/* The dispatch table has been installed. Check again
if the method exists (just in case the dispatch table
has been installed by another thread after we did the
previous check that the method exists).
*/
result = sarray_get_safe (receiver->class_pointer->dtable,
(sidx)op->sel_id);
if (result == 0)
{
/* If the method still just doesn't exist for the
class, attempt to forward the method. */
result = __objc_get_forward_imp (op);
}
}
}
return result;
}
else
return (IMP)nil_method;
}
IMP
objc_msg_lookup_super (Super_t super, SEL sel)
{
if (super->self)
return get_imp (super->class, sel);
else
return (IMP)nil_method;
}
int method_get_sizeof_arguments (Method *);
retval_t
objc_msg_sendv (id object, SEL op, arglist_t arg_frame)
{
Method *m = class_get_instance_method (object->class_pointer, op);
const char *type;
*((id *) method_get_first_argument (m, arg_frame, &type)) = object;
*((SEL *) method_get_next_argument (arg_frame, &type)) = op;
return __builtin_apply ((apply_t) m->method_imp,
arg_frame,
method_get_sizeof_arguments (m));
}
void
__objc_init_dispatch_tables ()
{
__objc_uninstalled_dtable = sarray_new (200, 0);
}
/* This function is called by objc_msg_lookup when the
dispatch table needs to be installed; thus it is called once
for each class, namely when the very first message is sent to it. */
static void
__objc_init_install_dtable (id receiver, SEL op __attribute__ ((__unused__)))
{
objc_mutex_lock (__objc_runtime_mutex);
/* This may happen, if the programmer has taken the address of a
method before the dtable was initialized... too bad for him! */
if (receiver->class_pointer->dtable != __objc_uninstalled_dtable)
{
objc_mutex_unlock (__objc_runtime_mutex);
return;
}
if (CLS_ISCLASS (receiver->class_pointer))
{
/* receiver is an ordinary object */
assert (CLS_ISCLASS (receiver->class_pointer));
/* install instance methods table */
__objc_install_dispatch_table_for_class (receiver->class_pointer);
/* call +initialize -- this will in turn install the factory
dispatch table if not already done :-) */
__objc_send_initialize (receiver->class_pointer);
}
else
{
/* receiver is a class object */
assert (CLS_ISCLASS ((Class)receiver));
assert (CLS_ISMETA (receiver->class_pointer));
/* Install real dtable for factory methods */
__objc_install_dispatch_table_for_class (receiver->class_pointer);
__objc_send_initialize ((Class)receiver);
}
objc_mutex_unlock (__objc_runtime_mutex);
}
/* Install dummy table for class which causes the first message to
that class (or instances hereof) to be initialized properly */
void
__objc_install_premature_dtable (Class class)
{
assert (__objc_uninstalled_dtable);
class->dtable = __objc_uninstalled_dtable;
}
/* Send +initialize to class if not already done */
static void
__objc_send_initialize (Class class)
{
/* This *must* be a class object */
assert (CLS_ISCLASS (class));
assert (! CLS_ISMETA (class));
if (! CLS_ISINITIALIZED (class))
{
CLS_SETINITIALIZED (class);
CLS_SETINITIALIZED (class->class_pointer);
/* Create the garbage collector type memory description */
__objc_generate_gc_type_description (class);
if (class->super_class)
__objc_send_initialize (class->super_class);
{
SEL op = sel_register_name ("initialize");
IMP imp = 0;
MethodList_t method_list = class->class_pointer->methods;
while (method_list) {
int i;
Method_t method;
for (i = 0; i < method_list->method_count; i++) {
method = &(method_list->method_list[i]);
if (method->method_name
&& method->method_name->sel_id == op->sel_id) {
imp = method->method_imp;
break;
}
}
if (imp)
break;
method_list = method_list->method_next;
}
if (imp)
(*imp) ((id) class, op);
}
}
}
/* Walk on the methods list of class and install the methods in the reverse
order of the lists. Since methods added by categories are before the methods
of class in the methods list, this allows categories to substitute methods
declared in class. However if more than one category replaces the same
method nothing is guaranteed about what method will be used.
Assumes that __objc_runtime_mutex is locked down. */
static void
__objc_install_methods_in_dtable (Class class, MethodList_t method_list)
{
int i;
if (! method_list)
return;
if (method_list->method_next)
__objc_install_methods_in_dtable (class, method_list->method_next);
for (i = 0; i < method_list->method_count; i++)
{
Method_t method = &(method_list->method_list[i]);
sarray_at_put_safe (class->dtable,
(sidx) method->method_name->sel_id,
method->method_imp);
}
}
/* Assumes that __objc_runtime_mutex is locked down. */
static void
__objc_install_dispatch_table_for_class (Class class)
{
Class super;
/* If the class has not yet had its class links resolved, we must
re-compute all class links */
if (! CLS_ISRESOLV (class))
__objc_resolve_class_links ();
super = class->super_class;
if (super != 0 && (super->dtable == __objc_uninstalled_dtable))
__objc_install_dispatch_table_for_class (super);
/* Allocate dtable if necessary */
if (super == 0)
{
objc_mutex_lock (__objc_runtime_mutex);
class->dtable = sarray_new (__objc_selector_max_index, 0);
objc_mutex_unlock (__objc_runtime_mutex);
}
else
class->dtable = sarray_lazy_copy (super->dtable);
__objc_install_methods_in_dtable (class, class->methods);
}
void
__objc_update_dispatch_table_for_class (Class class)
{
Class next;
struct sarray *arr;
/* not yet installed -- skip it */
if (class->dtable == __objc_uninstalled_dtable)
return;
objc_mutex_lock (__objc_runtime_mutex);
arr = class->dtable;
__objc_install_premature_dtable (class); /* someone might require it... */
sarray_free (arr); /* release memory */
/* could have been lazy... */
__objc_install_dispatch_table_for_class (class);
if (class->subclass_list) /* Traverse subclasses */
for (next = class->subclass_list; next; next = next->sibling_class)
__objc_update_dispatch_table_for_class (next);
objc_mutex_unlock (__objc_runtime_mutex);
}
/* This function adds a method list to a class. This function is
typically called by another function specific to the run-time. As
such this function does not worry about thread safe issues.
This one is only called for categories. Class objects have their
methods installed right away, and their selectors are made into
SEL's by the function __objc_register_selectors_from_class. */
void
class_add_method_list (Class class, MethodList_t list)
{
/* Passing of a linked list is not allowed. Do multiple calls. */
assert (! list->method_next);
__objc_register_selectors_from_list(list);
/* Add the methods to the class's method list. */
list->method_next = class->methods;
class->methods = list;
/* Update the dispatch table of class */
__objc_update_dispatch_table_for_class (class);
}
Method_t
class_get_instance_method (Class class, SEL op)
{
return search_for_method_in_hierarchy (class, op);
}
Method_t
class_get_class_method (MetaClass class, SEL op)
{
return search_for_method_in_hierarchy (class, op);
}
/* Search for a method starting from the current class up its hierarchy.
Return a pointer to the method's method structure if found. NULL
otherwise. */
static Method_t
search_for_method_in_hierarchy (Class cls, SEL sel)
{
Method_t method = NULL;
Class class;
if (! sel_is_mapped (sel))
return NULL;
/* Scan the method list of the class. If the method isn't found in the
list then step to its super class. */
for (class = cls; ((! method) && class); class = class->super_class)
method = search_for_method_in_list (class->methods, sel);
return method;
}
/* Given a linked list of method and a method's name. Search for the named
method's method structure. Return a pointer to the method's method
structure if found. NULL otherwise. */
Method_t
search_for_method_in_list (MethodList_t list, SEL op)
{
MethodList_t method_list = list;
if (! sel_is_mapped (op))
return NULL;
/* If not found then we'll search the list. */
while (method_list)
{
int i;
/* Search the method list. */
for (i = 0; i < method_list->method_count; ++i)
{
Method_t method = &method_list->method_list[i];
if (method->method_name)
if (method->method_name->sel_id == op->sel_id)
return method;
}
/* The method wasn't found. Follow the link to the next list of
methods. */
method_list = method_list->method_next;
}
return NULL;
}
static retval_t __objc_forward (id object, SEL sel, arglist_t args);
/* Forwarding pointers/integers through the normal registers */
static id
__objc_word_forward (id rcv, SEL op, ...)
{
void *args, *res;
args = __builtin_apply_args ();
res = __objc_forward (rcv, op, args);
if (res)
__builtin_return (res);
else
return res;
}
/* Specific routine for forwarding floats/double because of
architectural differences on some processors. i386s for
example which uses a floating point stack versus general
registers for floating point numbers. This forward routine
makes sure that GCC restores the proper return values */
static double
__objc_double_forward (id rcv, SEL op, ...)
{
void *args, *res;
args = __builtin_apply_args ();
res = __objc_forward (rcv, op, args);
__builtin_return (res);
}
#if INVISIBLE_STRUCT_RETURN
static __big
#else
static id
#endif
__objc_block_forward (id rcv, SEL op, ...)
{
void *args, *res;
args = __builtin_apply_args ();
res = __objc_forward (rcv, op, args);
if (res)
__builtin_return (res);
else
#if INVISIBLE_STRUCT_RETURN
return (__big) {{0, 0, 0, 0, 0, 0, 0, 0}};
#else
return nil;
#endif
}
/* This function is installed in the dispatch table for all methods which are
not implemented. Thus, it is called when a selector is not recognized. */
static retval_t
__objc_forward (id object, SEL sel, arglist_t args)
{
IMP imp;
static SEL frwd_sel = 0; /* !T:SAFE2 */
SEL err_sel;
/* first try if the object understands forward:: */
if (! frwd_sel)
frwd_sel = sel_get_any_uid ("forward::");
if (__objc_responds_to (object, frwd_sel))
{
imp = get_imp (object->class_pointer, frwd_sel);
return (*imp) (object, frwd_sel, sel, args);
}
/* If the object recognizes the doesNotRecognize: method then we're going
to send it. */
err_sel = sel_get_any_uid ("doesNotRecognize:");
if (__objc_responds_to (object, err_sel))
{
imp = get_imp (object->class_pointer, err_sel);
return (*imp) (object, err_sel, sel);
}
/* The object doesn't recognize the method. Check for responding to
error:. If it does then sent it. */
{
char msg[256 + strlen ((const char *) sel_get_name (sel))
+ strlen ((const char *) object->class_pointer->name)];
sprintf (msg, "(%s) %s does not recognize %s",
(CLS_ISMETA (object->class_pointer)
? "class"
: "instance" ),
object->class_pointer->name, sel_get_name (sel));
err_sel = sel_get_any_uid ("error:");
if (__objc_responds_to (object, err_sel))
{
imp = get_imp (object->class_pointer, err_sel);
return (*imp) (object, sel_get_any_uid ("error:"), msg);
}
/* The object doesn't respond to doesNotRecognize: or error:; Therefore,
a default action is taken. */
objc_error (object, OBJC_ERR_UNIMPLEMENTED, "%s\n", msg);
return 0;
}
}
void
__objc_print_dtable_stats ()
{
int total = 0;
objc_mutex_lock (__objc_runtime_mutex);
#ifdef OBJC_SPARSE2
printf ("memory usage: (%s)\n", "2-level sparse arrays");
#else
printf ("memory usage: (%s)\n", "3-level sparse arrays");
#endif
printf ("arrays: %d = %ld bytes\n", narrays,
(long) narrays * sizeof (struct sarray));
total += narrays * sizeof (struct sarray);
printf ("buckets: %d = %ld bytes\n", nbuckets,
(long) nbuckets * sizeof (struct sbucket));
total += nbuckets * sizeof (struct sbucket);
printf ("idxtables: %d = %ld bytes\n",
idxsize, (long) idxsize * sizeof (void *));
total += idxsize * sizeof (void *);
printf ("-----------------------------------\n");
printf ("total: %d bytes\n", total);
printf ("===================================\n");
objc_mutex_unlock (__objc_runtime_mutex);
}
/* Returns the uninstalled dispatch table indicator.
If a class' dispatch table points to __objc_uninstalled_dtable
then that means it needs its dispatch table to be installed. */
inline
struct sarray *
objc_get_uninstalled_dtable ()
{
return __objc_uninstalled_dtable;
}

281
contrib/libobjc/thr-dce.c
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@ -1,281 +0,0 @@
/* GNU Objective C Runtime Thread Interface
Copyright (C) 1996, 1997 Free Software Foundation, Inc.
Contributed by Galen C. Hunt (gchunt@cs.rochester.edu)
This file is part of GCC.
GCC is free software; you can redistribute it and/or modify it under the
terms of the GNU General Public License as published by the Free Software
Foundation; either version 2, or (at your option) any later version.
GCC is distributed in the hope that it will be useful, but WITHOUT ANY
WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
details.
You should have received a copy of the GNU General Public License along with
GCC; see the file COPYING. If not, write to the Free Software
Foundation, 51 Franklin Street, Fifth Floor,
Boston, MA 02110-1301, USA. */
/* As a special exception, if you link this library with files compiled with
GCC to produce an executable, this does not cause the resulting executable
to be covered by the GNU General Public License. This exception does not
however invalidate any other reasons why the executable file might be
covered by the GNU General Public License. */
#include <pthread.h>
#include "objc/thr.h"
#include "objc/runtime.h"
/* Key structure for maintaining thread specific storage */
static pthread_key_t _objc_thread_storage;
/* Backend initialization functions */
/* Initialize the threads subsystem. */
int
__objc_init_thread_system(void)
{
/* Initialize the thread storage key */
return pthread_keycreate(&_objc_thread_storage, NULL);
}
/* Close the threads subsystem. */
int
__objc_close_thread_system(void)
{
/* Destroy the thread storage key */
/* Not implemented yet */
/* return pthread_key_delete(&_objc_thread_storage); */
return 0;
}
/* Backend thread functions */
/* Create a new thread of execution. */
objc_thread_t
__objc_thread_detach(void (*func)(void *arg), void *arg)
{
objc_thread_t thread_id;
pthread_t new_thread_handle;
if (pthread_create(&new_thread_handle, pthread_attr_default,
(void *)func, arg) == 0)
{
/* ??? May not work! (64bit) */
thread_id = *(objc_thread_t *)&new_thread_handle;
pthread_detach(&new_thread_handle); /* Fully detach thread. */
}
else
thread_id = NULL;
return thread_id;
}
/* Set the current thread's priority. */
int
__objc_thread_set_priority(int priority)
{
int sys_priority = 0;
switch (priority)
{
case OBJC_THREAD_INTERACTIVE_PRIORITY:
sys_priority = (PRI_FG_MIN_NP + PRI_FG_MAX_NP) / 2;
break;
default:
case OBJC_THREAD_BACKGROUND_PRIORITY:
sys_priority = (PRI_BG_MIN_NP + PRI_BG_MAX_NP) / 2;
break;
case OBJC_THREAD_LOW_PRIORITY:
sys_priority = (PRI_BG_MIN_NP + PRI_BG_MAX_NP) / 2;
break;
}
/* Change the priority. */
if (pthread_setprio(pthread_self(), sys_priority) >= 0)
return 0;
else
/* Failed */
return -1;
}
/* Return the current thread's priority. */
int
__objc_thread_get_priority(void)
{
int sys_priority;
if ((sys_priority = pthread_getprio(pthread_self())) >= 0) {
if (sys_priority >= PRI_FG_MIN_NP && sys_priority <= PRI_FG_MAX_NP)
return OBJC_THREAD_INTERACTIVE_PRIORITY;
if (sys_priority >= PRI_BG_MIN_NP && sys_priority <= PRI_BG_MAX_NP)
return OBJC_THREAD_BACKGROUND_PRIORITY;
return OBJC_THREAD_LOW_PRIORITY;
}
/* Failed */
return -1;
}
/* Yield our process time to another thread. */
void
__objc_thread_yield(void)
{
pthread_yield();
}
/* Terminate the current thread. */
int
__objc_thread_exit(void)
{
/* exit the thread */
pthread_exit(&__objc_thread_exit_status);
/* Failed if we reached here */
return -1;
}
/* Returns an integer value which uniquely describes a thread. */
objc_thread_t
__objc_thread_id(void)
{
pthread_t self = pthread_self();
return (objc_thread_t) pthread_getunique_np (&self);
}
/* Sets the thread's local storage pointer. */
int
__objc_thread_set_data(void *value)
{
return pthread_setspecific(_objc_thread_storage, value);
}
/* Returns the thread's local storage pointer. */
void *
__objc_thread_get_data(void)
{
void *value = NULL;
if ( !(pthread_getspecific(_objc_thread_storage, &value)) )
return value;
return NULL;
}
/* Backend mutex functions */
/* Allocate a mutex. */
int
__objc_mutex_allocate(objc_mutex_t mutex)
{
if (pthread_mutex_init((pthread_mutex_t *)(&(mutex->backend)),
pthread_mutexattr_default))
return -1;
else
return 0;
}
/* Deallocate a mutex. */
int
__objc_mutex_deallocate(objc_mutex_t mutex)
{
if (pthread_mutex_destroy((pthread_mutex_t *)(&(mutex->backend))))
return -1;
else
return 0;
}
/* Grab a lock on a mutex. */
int
__objc_mutex_lock(objc_mutex_t mutex)
{
return pthread_mutex_lock((pthread_mutex_t *)(&(mutex->backend)));
}
/* Try to grab a lock on a mutex. */
int
__objc_mutex_trylock(objc_mutex_t mutex)
{
if (pthread_mutex_trylock((pthread_mutex_t *)(&(mutex->backend))) != 1)
return -1;
else
return 0;
}
/* Unlock the mutex */
int
__objc_mutex_unlock(objc_mutex_t mutex)
{
return pthread_mutex_unlock((pthread_mutex_t *)(&(mutex->backend)));
}
/* Backend condition mutex functions */
/* Allocate a condition. */
int
__objc_condition_allocate(objc_condition_t condition)
{
/* Unimplemented. */
return -1;
/*
if (pthread_cond_init((pthread_cond_t *)(&(condition->backend)), NULL))
return -1;
else
return 0;
*/
}
/* Deallocate a condition. */
int
__objc_condition_deallocate(objc_condition_t condition)
{
/* Unimplemented. */
return -1;
/*
return pthread_cond_destroy((pthread_cond_t *)(&(condition->backend)));
*/
}
/* Wait on the condition */
int
__objc_condition_wait(objc_condition_t condition, objc_mutex_t mutex)
{
/* Unimplemented. */
return -1;
/*
return pthread_cond_wait((pthread_cond_t *)(&(condition->backend)),
(pthread_mutex_t *)(&(mutex->backend)));
*/
}
/* Wake up all threads waiting on this condition. */
int
__objc_condition_broadcast(objc_condition_t condition)
{
/* Unimplemented. */
return -1;
/*
return pthread_cond_broadcast((pthread_cond_t *)(&(condition->backend)));
*/
}
/* Wake up one thread waiting on this condition. */
int
__objc_condition_signal(objc_condition_t condition)
{
/* Unimplemented. */
return -1;
/*
return pthread_cond_signal((pthread_cond_t *)(&(condition->backend)));
*/
}
/* End of File */

281
contrib/libobjc/thr-decosf1.c
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@ -1,281 +0,0 @@
/* GNU Objective C Runtime Thread Interface
Copyright (C) 1996, 1997 Free Software Foundation, Inc.
Contributed by Galen C. Hunt (gchunt@cs.rochester.edu)
This file is part of GCC.
GCC is free software; you can redistribute it and/or modify it under the
terms of the GNU General Public License as published by the Free Software
Foundation; either version 2, or (at your option) any later version.
GCC is distributed in the hope that it will be useful, but WITHOUT ANY
WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
details.
You should have received a copy of the GNU General Public License along with
GCC; see the file COPYING. If not, write to the Free Software
Foundation, 51 Franklin Street, Fifth Floor,
Boston, MA 02110-1301, USA. */
/* As a special exception, if you link this library with files compiled with
GCC to produce an executable, this does not cause the resulting executable
to be covered by the GNU General Public License. This exception does not
however invalidate any other reasons why the executable file might be
covered by the GNU General Public License. */
#include <pthread.h>
#include "objc/thr.h"
#include "objc/runtime.h"
/* Key structure for maintaining thread specific storage */
static pthread_key_t _objc_thread_storage;
/* Backend initialization functions */
/* Initialize the threads subsystem. */
int
__objc_init_thread_system(void)
{
/* Initialize the thread storage key */
return pthread_keycreate(&_objc_thread_storage, NULL);
}
/* Close the threads subsystem. */
int
__objc_close_thread_system(void)
{
/* Destroy the thread storage key */
/* Not implemented yet */
/* return pthread_key_delete(&_objc_thread_storage); */
return 0;
}
/* Backend thread functions */
/* Create a new thread of execution. */
objc_thread_t
__objc_thread_detach(void (*func)(void *arg), void *arg)
{
objc_thread_t thread_id;
pthread_t new_thread_handle;
if (pthread_create(&new_thread_handle, pthread_attr_default,
(void *)func, arg) == 0)
{
/* ??? May not work! (64bit) */
thread_id = *(objc_thread_t *)&new_thread_handle;
pthread_detach(&new_thread_handle); /* Fully detach thread. */
}
else
thread_id = NULL;
return thread_id;
}
/* Set the current thread's priority. */
int
__objc_thread_set_priority(int priority)
{
int sys_priority = 0;
switch (priority)
{
case OBJC_THREAD_INTERACTIVE_PRIORITY:
sys_priority = (PRI_FG_MIN_NP + PRI_FG_MAX_NP) / 2;
break;
default:
case OBJC_THREAD_BACKGROUND_PRIORITY:
sys_priority = (PRI_BG_MIN_NP + PRI_BG_MAX_NP) / 2;
break;
case OBJC_THREAD_LOW_PRIORITY:
sys_priority = (PRI_BG_MIN_NP + PRI_BG_MAX_NP) / 2;
break;
}
/* Change the priority. */
if (pthread_setprio(pthread_self(), sys_priority) >= 0)
return 0;
else
/* Failed */
return -1;
}
/* Return the current thread's priority. */
int
__objc_thread_get_priority(void)
{
int sys_priority;
if ((sys_priority = pthread_getprio(pthread_self())) >= 0) {
if (sys_priority >= PRI_FG_MIN_NP && sys_priority <= PRI_FG_MAX_NP)
return OBJC_THREAD_INTERACTIVE_PRIORITY;
if (sys_priority >= PRI_BG_MIN_NP && sys_priority <= PRI_BG_MAX_NP)
return OBJC_THREAD_BACKGROUND_PRIORITY;
return OBJC_THREAD_LOW_PRIORITY;
}
/* Failed */
return -1;
}
/* Yield our process time to another thread. */
void
__objc_thread_yield(void)
{
pthread_yield();
}
/* Terminate the current thread. */
int
__objc_thread_exit(void)
{
/* exit the thread */
pthread_exit(&__objc_thread_exit_status);
/* Failed if we reached here */
return -1;
}
/* Returns an integer value which uniquely describes a thread. */
objc_thread_t
__objc_thread_id(void)
{
pthread_t self = pthread_self();
return (objc_thread_t) pthread_getunique_np (&self);
}
/* Sets the thread's local storage pointer. */
int
__objc_thread_set_data(void *value)
{
return pthread_setspecific(_objc_thread_storage, value);
}
/* Returns the thread's local storage pointer. */
void *
__objc_thread_get_data(void)
{
void *value = NULL;
if ( !(pthread_getspecific(_objc_thread_storage, &value)) )
return value;
return NULL;
}
/* Backend mutex functions */
/* Allocate a mutex. */
int
__objc_mutex_allocate(objc_mutex_t mutex)
{
if (pthread_mutex_init((pthread_mutex_t *)(&(mutex->backend)),
pthread_mutexattr_default))
return -1;
else
return 0;
}
/* Deallocate a mutex. */
int
__objc_mutex_deallocate(objc_mutex_t mutex)
{
if (pthread_mutex_destroy((pthread_mutex_t *)(&(mutex->backend))))
return -1;
else
return 0;
}
/* Grab a lock on a mutex. */
int
__objc_mutex_lock(objc_mutex_t mutex)
{
return pthread_mutex_lock((pthread_mutex_t *)(&(mutex->backend)));
}
/* Try to grab a lock on a mutex. */
int
__objc_mutex_trylock(objc_mutex_t mutex)
{
if (pthread_mutex_trylock((pthread_mutex_t *)(&(mutex->backend))) != 1)
return -1;
else
return 0;
}
/* Unlock the mutex */
int
__objc_mutex_unlock(objc_mutex_t mutex)
{
return pthread_mutex_unlock((pthread_mutex_t *)(&(mutex->backend)));
}
/* Backend condition mutex functions */
/* Allocate a condition. */
int
__objc_condition_allocate(objc_condition_t condition)
{
/* Unimplemented. */
return -1;
/*
if (pthread_cond_init((pthread_cond_t *)(&(condition->backend)), NULL))
return -1;
else
return 0;
*/
}
/* Deallocate a condition. */
int
__objc_condition_deallocate(objc_condition_t condition)
{
/* Unimplemented. */
return -1;
/*
return pthread_cond_destroy((pthread_cond_t *)(&(condition->backend)));
*/
}
/* Wait on the condition */
int
__objc_condition_wait(objc_condition_t condition, objc_mutex_t mutex)
{
/* Unimplemented. */
return -1;
/*
return pthread_cond_wait((pthread_cond_t *)(&(condition->backend)),
(pthread_mutex_t *)(&(mutex->backend)));
*/
}
/* Wake up all threads waiting on this condition. */
int
__objc_condition_broadcast(objc_condition_t condition)
{
/* Unimplemented. */
return -1;
/*
return pthread_cond_broadcast((pthread_cond_t *)(&(condition->backend)));
*/
}
/* Wake up one thread waiting on this condition. */
int
__objc_condition_signal(objc_condition_t condition)
{
/* Unimplemented. */
return -1;
/*
return pthread_cond_signal((pthread_cond_t *)(&(condition->backend)));
*/
}
/* End of File */

235
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/* GNU Objective C Runtime Thread Interface - SGI IRIX Implementation
Copyright (C) 1996, 1997 Free Software Foundation, Inc.
Contributed by Galen C. Hunt (gchunt@cs.rochester.edu)
This file is part of GCC.
GCC is free software; you can redistribute it and/or modify it under the
terms of the GNU General Public License as published by the Free Software
Foundation; either version 2, or (at your option) any later version.
GCC is distributed in the hope that it will be useful, but WITHOUT ANY
WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
details.
You should have received a copy of the GNU General Public License along with
GCC; see the file COPYING. If not, write to the Free Software
Foundation, 51 Franklin Street, Fifth Floor,
Boston, MA 02110-1301, USA. */
/* As a special exception, if you link this library with files compiled with
GCC to produce an executable, this does not cause the resulting executable
to be covered by the GNU General Public License. This exception does not
however invalidate any other reasons why the executable file might be
covered by the GNU General Public License. */
#include <stdlib.h>
#include <sys/types.h>
#include <sys/sysmp.h>
#include <sys/prctl.h>
#include <ulocks.h>
#include "objc/thr.h"
#include "objc/runtime.h"
/* Key structure for maintaining thread specific storage */
static void * __objc_shared_arena_handle = NULL;
/* Backend initialization functions */
/* Initialize the threads subsystem. */
int
__objc_init_thread_system(void)
{
/* Name of IRIX arena. */
char arena_name[64];
DEBUG_PRINTF("__objc_init_thread_system\n");
/* Construct a temporary name for arena. */
sprintf(arena_name, "/usr/tmp/objc_%05u", (unsigned)getpid());
/* Up to 256 threads. Arena only for threads. */
usconfig(CONF_INITUSERS, 256);
usconfig(CONF_ARENATYPE, US_SHAREDONLY);
/* Initialize the arena */
if (!(__objc_shared_arena_handle = usinit(arena_name)))
/* Failed */
return -1;
return 0;
}
/* Close the threads subsystem. */
int
__objc_close_thread_system(void)
{
return 0;
}
/* Backend thread functions */
/* Create a new thread of execution. */
objc_thread_t
__objc_thread_detach(void (*func)(void *arg), void *arg)
{
objc_thread_t thread_id;
int sys_id;
if ((sys_id = sproc((void *)func, PR_SALL, arg)) >= 0)
thread_id = (objc_thread_t)sys_id;
else
thread_id = NULL;
return thread_id;
}
/* Set the current thread's priority. */
int
__objc_thread_set_priority(int priority)
{
/* Not implemented yet */
return -1;
}
/* Return the current thread's priority. */
int
__objc_thread_get_priority(void)
{
/* Not implemented yet */
return OBJC_THREAD_INTERACTIVE_PRIORITY;
}
/* Yield our process time to another thread. */
void
__objc_thread_yield(void)
{
sginap(0);
}
/* Terminate the current thread. */
int
__objc_thread_exit(void)
{
/* IRIX only has exit. */
exit(__objc_thread_exit_status);
/* Failed if we reached here */
return -1;
}
/* Returns an integer value which uniquely describes a thread. */
objc_thread_t
__objc_thread_id(void)
{
/* Threads are processes. */
return (objc_thread_t)get_pid();
}
/* Sets the thread's local storage pointer. */
int
__objc_thread_set_data(void *value)
{
*((void **)&PRDA->usr_prda) = value;
return 0;
}
/* Returns the thread's local storage pointer. */
void *
__objc_thread_get_data(void)
{
return *((void **)&PRDA->usr_prda);
}
/* Backend mutex functions */
/* Allocate a mutex. */
int
__objc_mutex_allocate(objc_mutex_t mutex)
{
if (!( (ulock_t)(mutex->backend) = usnewlock(__objc_shared_arena_handle) ))
return -1;
else
return 0;
}
/* Deallocate a mutex. */
int
__objc_mutex_deallocate(objc_mutex_t mutex)
{
usfreelock((ulock_t)(mutex->backend), __objc_shared_arena_handle);
return 0;
}
/* Grab a lock on a mutex. */
int
__objc_mutex_lock(objc_mutex_t mutex)
{
if (ussetlock((ulock_t)(mutex->backend)) == 0)
return -1;
else
return 0;
}
/* Try to grab a lock on a mutex. */
int
__objc_mutex_trylock(objc_mutex_t mutex)
{
if (ustestlock((ulock_t)(mutex->backend)) == 0)
return -1;
else
return 0;
}
/* Unlock the mutex */
int
__objc_mutex_unlock(objc_mutex_t mutex)
{
usunsetlock((ulock_t)(mutex->backend));
return 0;
}
/* Backend condition mutex functions */
/* Allocate a condition. */
int
__objc_condition_allocate(objc_condition_t condition)
{
/* Unimplemented. */
return -1;
}
/* Deallocate a condition. */
int
__objc_condition_deallocate(objc_condition_t condition)
{
/* Unimplemented. */
return -1;
}
/* Wait on the condition */
int
__objc_condition_wait(objc_condition_t condition, objc_mutex_t mutex)
{
/* Unimplemented. */
return -1;
}
/* Wake up all threads waiting on this condition. */
int
__objc_condition_broadcast(objc_condition_t condition)
{
/* Unimplemented. */
return -1;
}
/* Wake up one thread waiting on this condition. */
int
__objc_condition_signal(objc_condition_t condition)
{
/* Unimplemented. */
return -1;
}
/* End of File */

313
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/* GNU Objective C Runtime Thread Implementation
Copyright (C) 1996, 1997, 2002 Free Software Foundation, Inc.
Contributed by Galen C. Hunt (gchunt@cs.rochester.edu)
Modified for Mach threads by Bill Bumgarner <bbum@friday.com>
Condition functions added by Mircea Oancea <mircea@first.elcom.pub.ro>
This file is part of GCC.
GCC is free software; you can redistribute it and/or modify it under the
terms of the GNU General Public License as published by the Free Software
Foundation; either version 2, or (at your option) any later version.
GCC is distributed in the hope that it will be useful, but WITHOUT ANY
WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
details.
You should have received a copy of the GNU General Public License
along with GCC; see the file COPYING. If not, write to
the Free Software Foundation, 51 Franklin Street, Fifth Floor,
Boston, MA 02110-1301, USA. */
/* As a special exception, if you link this library with files compiled with
GCC to produce an executable, this does not cause the resulting executable
to be covered by the GNU General Public License. This exception does not
however invalidate any other reasons why the executable file might be
covered by the GNU General Public License. */
#include <mach/mach.h>
#include <mach/cthreads.h>
#include "objc/thr.h"
#include "objc/runtime.h"
/*
Obtain the maximum thread priority that can set for t. Under the
mach threading model, it is possible for the developer to adjust the
maximum priority downward only-- cannot be raised without superuser
privileges. Once lowered, it cannot be raised.
*/
static int
__mach_get_max_thread_priority (cthread_t t, int *base)
{
thread_t threadP;
kern_return_t error;
struct thread_sched_info info;
unsigned int info_count=THREAD_SCHED_INFO_COUNT;
if (t == NULL)
return -1;
threadP = cthread_thread (t); /* get thread underlying */
error = thread_info (threadP, THREAD_SCHED_INFO,
(thread_info_t) &info, &info_count);
if (error != KERN_SUCCESS)
return -1;
if (base != NULL)
*base = info.base_priority;
return info.max_priority;
}
/* Backend initialization functions */
/* Initialize the threads subsystem. */
int
__objc_init_thread_system (void)
{
return 0;
}
/* Close the threads subsystem. */
int
__objc_close_thread_system (void)
{
return 0;
}
/* Backend thread functions */
/* Create a new thread of execution. */
objc_thread_t
__objc_thread_detach (void (*func) (void *arg), void *arg)
{
objc_thread_t thread_id;
cthread_t new_thread_handle;
/* create thread */
new_thread_handle = cthread_fork ((cthread_fn_t) func, arg);
if (new_thread_handle)
{
/* this is not terribly portable */
thread_id = *(objc_thread_t *) &new_thread_handle;
cthread_detach (new_thread_handle);
}
else
thread_id = NULL;
return thread_id;
}
/* Set the current thread's priority. */
int
__objc_thread_set_priority (int priority)
{
objc_thread_t *t = objc_thread_id ();
cthread_t cT = (cthread_t) t;
int maxPriority = __mach_get_max_thread_priority (cT, NULL);
int sys_priority = 0;
if (maxPriority == -1)
return -1;
switch (priority)
{
case OBJC_THREAD_INTERACTIVE_PRIORITY:
sys_priority = maxPriority;
break;
case OBJC_THREAD_BACKGROUND_PRIORITY:
sys_priority = (maxPriority * 2) / 3;
break;
case OBJC_THREAD_LOW_PRIORITY:
sys_priority = maxPriority / 3;
break;
default:
return -1;
}
if (sys_priority == 0)
return -1;
/* Change the priority */
if (cthread_priority (cT, sys_priority, 0) == KERN_SUCCESS)
return 0;
else
return -1;
}
/* Return the current thread's priority. */
int
__objc_thread_get_priority (void)
{
objc_thread_t *t = objc_thread_id ();
cthread_t cT = (cthread_t) t; /* see objc_thread_id () */
int basePriority;
int maxPriority;
int sys_priority = 0;
int interactiveT, backgroundT, lowT; /* thresholds */
maxPriority = __mach_get_max_thread_priority (cT, &basePriority);
if (maxPriority == -1)
return -1;
if (basePriority > ( (maxPriority * 2) / 3))
return OBJC_THREAD_INTERACTIVE_PRIORITY;
if (basePriority > ( maxPriority / 3))
return OBJC_THREAD_BACKGROUND_PRIORITY;
return OBJC_THREAD_LOW_PRIORITY;
}
/* Yield our process time to another thread. */
void
__objc_thread_yield (void)
{
cthread_yield ();
}
/* Terminate the current thread. */
int
__objc_thread_exit (void)
{
/* exit the thread */
cthread_exit (&__objc_thread_exit_status);
/* Failed if we reached here */
return -1;
}
/* Returns an integer value which uniquely describes a thread. */
objc_thread_t
__objc_thread_id (void)
{
cthread_t self = cthread_self ();
return *(objc_thread_t *) &self;
}
/* Sets the thread's local storage pointer. */
int
__objc_thread_set_data (void *value)
{
cthread_set_data (cthread_self (), (any_t) value);
return 0;
}
/* Returns the thread's local storage pointer. */
void *
__objc_thread_get_data (void)
{
return (void *) cthread_data (cthread_self ());
}
/* Backend mutex functions */
/* Allocate a mutex. */
int
__objc_mutex_allocate (objc_mutex_t mutex)
{
int err = 0;
mutex->backend = objc_malloc (sizeof (struct mutex));
err = mutex_init ((mutex_t) (mutex->backend));
if (err != 0)
{
objc_free (mutex->backend);
return -1;
}
else
return 0;
}
/* Deallocate a mutex. */
int
__objc_mutex_deallocate (objc_mutex_t mutex)
{
mutex_clear ((mutex_t) (mutex->backend));
objc_free (mutex->backend);
mutex->backend = NULL;
return 0;
}
/* Grab a lock on a mutex. */
int
__objc_mutex_lock (objc_mutex_t mutex)
{
mutex_lock ((mutex_t) (mutex->backend));
return 0;
}
/* Try to grab a lock on a mutex. */
int
__objc_mutex_trylock (objc_mutex_t mutex)
{
if (mutex_try_lock ((mutex_t) (mutex->backend)) == 0)
return -1;
else
return 0;
}
/* Unlock the mutex */
int
__objc_mutex_unlock (objc_mutex_t mutex)
{
mutex_unlock ((mutex_t) (mutex->backend));
return 0;
}
/* Backend condition mutex functions */
/* Allocate a condition. */
int
__objc_condition_allocate (objc_condition_t condition)
{
condition->backend = objc_malloc (sizeof (struct condition));
condition_init ((condition_t) (condition->backend));
return 0;
}
/* Deallocate a condition. */
int
__objc_condition_deallocate (objc_condition_t condition)
{
condition_clear ((condition_t) (condition->backend));
objc_free (condition->backend);
condition->backend = NULL;
return 0;
}
/* Wait on the condition */
int
__objc_condition_wait (objc_condition_t condition, objc_mutex_t mutex)
{
condition_wait ((condition_t) (condition->backend),
(mutex_t) (mutex->backend));
return 0;
}
/* Wake up all threads waiting on this condition. */
int
__objc_condition_broadcast (objc_condition_t condition)
{
condition_broadcast ((condition_t) (condition->backend));
return 0;
}
/* Wake up one thread waiting on this condition. */
int
__objc_condition_signal (objc_condition_t condition)
{
condition_signal ((condition_t) (condition->backend));
return 0;
}
/* End of File */

192
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/* GNU Objective C Runtime Thread Interface.
Copyright (C) 1999, 2000, 2001, 2002, 2003, 2005, 2006
Free Software Foundation, Inc.
This file is part of GCC.
GCC is free software; you can redistribute it and/or modify it under the
terms of the GNU General Public License as published by the Free Software
Foundation; either version 2, or (at your option) any later version.
GCC is distributed in the hope that it will be useful, but WITHOUT ANY
WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
details.
You should have received a copy of the GNU General Public License
along with GCC; see the file COPYING. If not, write to
the Free Software Foundation, 51 Franklin Street, Fifth Floor,
Boston, MA 02110-1301, USA. */
/* As a special exception, if you link this library with files compiled with
GCC to produce an executable, this does not cause the resulting executable
to be covered by the GNU General Public License. This exception does not
however invalidate any other reasons why the executable file might be
covered by the GNU General Public License. */
#define _LIBOBJC
/* The line below is needed for declarations of functions such as
pthread_mutexattr_settype, without which gthr-posix.h may fail to
compile within libobjc. Unfortunately, this breaks compilation on
Tru64 UNIX V4.0F, so disable it there. */
#ifndef __osf__
#define _XOPEN_SOURCE 500
#endif
#include "config.h"
#include "tconfig.h"
#include "coretypes.h"
#include "tm.h"
#include "defaults.h"
#include "objc/thr.h"
#include "objc/runtime.h"
#include <gthr.h>
/* Backend initialization functions */
/* Initialize the threads subsystem. */
int
__objc_init_thread_system(void)
{
return __gthread_objc_init_thread_system ();
}
/* Close the threads subsystem. */
int
__objc_close_thread_system(void)
{
return __gthread_objc_close_thread_system ();
}
/* Backend thread functions */
/* Create a new thread of execution. */
objc_thread_t
__objc_thread_detach(void (*func)(void *), void *arg)
{
return __gthread_objc_thread_detach (func, arg);
}
/* Set the current thread's priority. */
int
__objc_thread_set_priority(int priority)
{
return __gthread_objc_thread_set_priority (priority);
}
/* Return the current thread's priority. */
int
__objc_thread_get_priority(void)
{
return __gthread_objc_thread_get_priority ();
}
/* Yield our process time to another thread. */
void
__objc_thread_yield(void)
{
__gthread_objc_thread_yield ();
}
/* Terminate the current thread. */
int
__objc_thread_exit(void)
{
return __gthread_objc_thread_exit ();
}
/* Returns an integer value which uniquely describes a thread. */
objc_thread_t
__objc_thread_id(void)
{
return __gthread_objc_thread_id ();
}
/* Sets the thread's local storage pointer. */
int
__objc_thread_set_data(void *value)
{
return __gthread_objc_thread_set_data (value);
}
/* Returns the thread's local storage pointer. */
void *
__objc_thread_get_data(void)
{
return __gthread_objc_thread_get_data ();
}
/* Backend mutex functions */
/* Allocate a mutex. */
int
__objc_mutex_allocate(objc_mutex_t mutex)
{
return __gthread_objc_mutex_allocate (mutex);
}
/* Deallocate a mutex. */
int
__objc_mutex_deallocate(objc_mutex_t mutex)
{
return __gthread_objc_mutex_deallocate (mutex);
}
/* Grab a lock on a mutex. */
int
__objc_mutex_lock(objc_mutex_t mutex)
{
return __gthread_objc_mutex_lock (mutex);
}
/* Try to grab a lock on a mutex. */
int
__objc_mutex_trylock(objc_mutex_t mutex)
{
return __gthread_objc_mutex_trylock (mutex);
}
/* Unlock the mutex */
int
__objc_mutex_unlock(objc_mutex_t mutex)
{
return __gthread_objc_mutex_unlock (mutex);
}
/* Backend condition mutex functions */
/* Allocate a condition. */
int
__objc_condition_allocate(objc_condition_t condition)
{
return __gthread_objc_condition_allocate (condition);
}
/* Deallocate a condition. */
int
__objc_condition_deallocate(objc_condition_t condition)
{
return __gthread_objc_condition_deallocate (condition);
}
/* Wait on the condition */
int
__objc_condition_wait(objc_condition_t condition, objc_mutex_t mutex)
{
return __gthread_objc_condition_wait (condition, mutex);
}
/* Wake up all threads waiting on this condition. */
int
__objc_condition_broadcast(objc_condition_t condition)
{
return __gthread_objc_condition_broadcast (condition);
}
/* Wake up one thread waiting on this condition. */
int
__objc_condition_signal(objc_condition_t condition)
{
return __gthread_objc_condition_signal (condition);
}
/* End of File */

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/* GNU Objective C Runtime Thread Interface - OS/2 emx Implementation
Copyright (C) 1996, 1997 Free Software Foundation, Inc.
Contributed by Thomas Baier (baier@ci.tuwien.ac.at)
This file is part of GCC.
GCC is free software; you can redistribute it and/or modify it under the
terms of the GNU General Public License as published by the Free Software
Foundation; either version 2, or (at your option) any later version.
GCC is distributed in the hope that it will be useful, but WITHOUT ANY
WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
details.
You should have received a copy of the GNU General Public License
along with GCC; see the file COPYING. If not, write to
the Free Software Foundation, 51 Franklin Street, Fifth Floor,
Boston, MA 02110-1301, USA. */
/* As a special exception, if you link this library with files compiled with
GCC to produce an executable, this does not cause the resulting executable
to be covered by the GNU General Public License. This exception does not
however invalidate any other reasons why the executable file might be
covered by the GNU General Public License. */
#include "objc/thr.h"
#include "objc/runtime.h"
#define INCL_DOSSEMAPHORES
#define INCL_DOSPROCESS
/*
* conflicts with objc.h: SEL, BOOL, id
* solution: prefixing those with _OS2_ before including <os2.h>
*/
#define SEL _OS2_SEL
#define BOOL _OS2_BOOL
#define id _OS2_id
#include <os2.h>
#undef id
#undef SEL
#undef BOOL
#include <stdlib.h>
/* Backend initialization functions */
/* Initialize the threads subsystem. */
int
__objc_init_thread_system(void)
{
return 0;
}
/* Close the threads subsystem. */
int
__objc_close_thread_system(void)
{
return 0;
}
/* Backend thread functions */
/* Create a new thread of execution. */
objc_thread_t
__objc_thread_detach(void (*func)(void *arg), void *arg)
{
int thread_id = 0;
if ((thread_id = _beginthread (func,NULL,32768,arg)) < 0)
thread_id = 0;
return (objc_thread_t)thread_id;
}
/* Set the current thread's priority. */
int
__objc_thread_set_priority(int priority)
{
ULONG sys_class = 0;
ULONG sys_priority = 0;
/* OBJC_THREAD_INTERACTIVE_PRIORITY -> PRTYC_FOREGROUNDSERVER
* OBJC_THREAD_BACKGROUND_PRIORITY -> PRTYC_REGULAR
* OBJC_THREAD_LOW_PRIORITY -> PRTYC_IDLETIME */
switch (priority) {
case OBJC_THREAD_INTERACTIVE_PRIORITY:
sys_class = PRTYC_REGULAR;
sys_priority = 10;
break;
default:
case OBJC_THREAD_BACKGROUND_PRIORITY:
sys_class = PRTYC_IDLETIME;
sys_priority = 25;
break;
case OBJC_THREAD_LOW_PRIORITY:
sys_class = PRTYC_IDLETIME;
sys_priority = 0;
break;
}
/* Change priority */
if (!DosSetPriority (PRTYS_THREAD,sys_class,sys_priority,*_threadid))
return 0;
else
return -1;
}
/* Return the current thread's priority. */
int
__objc_thread_get_priority(void)
{
PTIB ptib;
PPIB ppib;
/* get information about current thread */
DosGetInfoBlocks (&ptib,&ppib);
switch (ptib->tib_ptib2->tib2_ulpri)
{
case PRTYC_IDLETIME:
case PRTYC_REGULAR:
case PRTYC_TIMECRITICAL:
case PRTYC_FOREGROUNDSERVER:
default:
return OBJC_THREAD_INTERACTIVE_PRIORITY;
}
return -1;
}
/* Yield our process time to another thread. */
void
__objc_thread_yield(void)
{
DosSleep (0);
}
/* Terminate the current thread. */
int
__objc_thread_exit(void)
{
/* terminate the thread, NEVER use DosExit () */
_endthread ();
/* Failed if we reached here */
return -1;
}
/* Returns an integer value which uniquely describes a thread. */
objc_thread_t
__objc_thread_id(void)
{
return (objc_thread_t) *_threadid;
}
/* Sets the thread's local storage pointer. */
int
__objc_thread_set_data(void *value)
{
*_threadstore () = value;
return 0;
}
/* Returns the thread's local storage pointer. */
void *
__objc_thread_get_data(void)
{
return *_threadstore ();
}
/* Backend mutex functions */
/* Allocate a mutex. */
int
__objc_mutex_allocate(objc_mutex_t mutex)
{
if (DosCreateMutexSem (NULL, (HMTX)(&(mutex->backend)),0L,0) > 0)
return -1;
else
return 0;
}
/* Deallocate a mutex. */
int
__objc_mutex_deallocate(objc_mutex_t mutex)
{
DosCloseMutexSem ((HMTX)(mutex->backend));
return 0;
}
/* Grab a lock on a mutex. */
int
__objc_mutex_lock(objc_mutex_t mutex)
{
if (DosRequestMutexSem ((HMTX)(mutex->backend),-1L) != 0)
return -1;
else
return 0;
}
/* Try to grab a lock on a mutex. */
int
__objc_mutex_trylock(objc_mutex_t mutex)
{
if (DosRequestMutexSem ((HMTX)(mutex->backend),0L) != 0)
return -1;
else
return 0;
}
/* Unlock the mutex */
int
__objc_mutex_unlock(objc_mutex_t mutex)
{
if (DosReleaseMutexSem((HMTX)(mutex->backend)) != 0)
return -1;
else
return 0;
}
/* Backend condition mutex functions */
/* Allocate a condition. */
int
__objc_condition_allocate(objc_condition_t condition)
{
/* Unimplemented. */
return -1;
}
/* Deallocate a condition. */
int
__objc_condition_deallocate(objc_condition_t condition)
{
/* Unimplemented. */
return -1;
}
/* Wait on the condition */
int
__objc_condition_wait(objc_condition_t condition, objc_mutex_t mutex)
{
/* Unimplemented. */
return -1;
}
/* Wake up all threads waiting on this condition. */
int
__objc_condition_broadcast(objc_condition_t condition)
{
/* Unimplemented. */
return -1;
}
/* Wake up one thread waiting on this condition. */
int
__objc_condition_signal(objc_condition_t condition)
{
/* Unimplemented. */
return -1;
}
/* End of File */

318
contrib/libobjc/thr-posix.c
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@ -1,318 +0,0 @@
/* GNU Objective C Runtime Thread Interface for POSIX compliant threads
Copyright (C) 1996, 1997 Free Software Foundation, Inc.
Contributed by Galen C. Hunt (gchunt@cs.rochester.edu)
Modified for Linux/Pthreads by Kai-Uwe Sattler (kus@iti.cs.uni-magdeburg.de)
Modified for posix compliance by Chris Ball (cball@fmco.com)
This file is part of GCC.
GCC is free software; you can redistribute it and/or modify it under the
terms of the GNU General Public License as published by the Free Software
Foundation; either version 2, or (at your option) any later version.
GCC is distributed in the hope that it will be useful, but WITHOUT ANY
WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
details.
You should have received a copy of the GNU General Public License
along with GCC; see the file COPYING. If not, write to
the Free Software Foundation, 51 Franklin Street, Fifth Floor,
Boston, MA 02110-1301, USA. */
/* As a special exception, if you link this library with files compiled with
GCC to produce an executable, this does not cause the resulting executable
to be covered by the GNU General Public License. This exception does not
however invalidate any other reasons why the executable file might be
covered by the GNU General Public License. */
#include "objc/thr.h"
#include "objc/runtime.h"
#include <pthread.h>
/* Key structure for maintaining thread specific storage */
static pthread_key_t _objc_thread_storage;
static pthread_attr_t _objc_thread_attribs;
/* Backend initialization functions */
/* Initialize the threads subsystem. */
int
__objc_init_thread_system(void)
{
/* Initialize the thread storage key */
if (pthread_key_create(&_objc_thread_storage, NULL) == 0)
{
/*
* The normal default detach state for threads is PTHREAD_CREATE_JOINABLE
* which causes threads to not die when you think they should.
*/
if (pthread_attr_init(&_objc_thread_attribs) == 0)
{
if (pthread_attr_setdetachstate(&_objc_thread_attribs,
PTHREAD_CREATE_DETACHED) == 0)
return 0;
}
}
return -1;
}
/* Close the threads subsystem. */
int
__objc_close_thread_system(void)
{
if (pthread_key_delete(_objc_thread_storage) == 0)
{
if (pthread_attr_destroy(&_objc_thread_attribs) == 0)
return 0;
}
return -1;
}
/* Backend thread functions */
/* Create a new thread of execution. */
objc_thread_t
__objc_thread_detach(void (*func)(void *arg), void *arg)
{
objc_thread_t thread_id;
pthread_t new_thread_handle;
if (!(pthread_create(&new_thread_handle, &_objc_thread_attribs,
(void *)func, arg)))
thread_id = *(objc_thread_t *)&new_thread_handle;
else
thread_id = NULL;
return thread_id;
}
/* Set the current thread's priority.
*
* Be aware that the default schedpolicy often disallows thread priorities.
*/
int
__objc_thread_set_priority(int priority)
{
pthread_t thread_id = pthread_self();
int policy;
struct sched_param params;
int priority_min, priority_max;
if (pthread_getschedparam(thread_id, &policy, &params) == 0)
{
if ((priority_max = sched_get_priority_max(policy)) != 0)
return -1;
if ((priority_min = sched_get_priority_min(policy)) != 0)
return -1;
if (priority > priority_max)
priority = priority_max;
else if (priority < priority_min)
priority = priority_min;
params.sched_priority = priority;
/*
* The solaris 7 and several other man pages incorrectly state that
* this should be a pointer to policy but pthread.h is universally
* at odds with this.
*/
if (pthread_setschedparam(thread_id, policy, &params) == 0)
return 0;
}
return -1;
}
/* Return the current thread's priority. */
int
__objc_thread_get_priority(void)
{
int policy;
struct sched_param params;
if (pthread_getschedparam(pthread_self(), &policy, &params) == 0)
return params.sched_priority;
else
return -1;
}
/* Yield our process time to another thread. */
void
__objc_thread_yield(void)
{
sched_yield();
}
/* Terminate the current thread. */
int
__objc_thread_exit(void)
{
/* exit the thread */
pthread_exit(&__objc_thread_exit_status);
/* Failed if we reached here */
return -1;
}
/* Returns an integer value which uniquely describes a thread. */
objc_thread_t
__objc_thread_id(void)
{
pthread_t self = pthread_self();
return *(objc_thread_t *)&self;
}
/* Sets the thread's local storage pointer. */
int
__objc_thread_set_data(void *value)
{
if (pthread_setspecific(_objc_thread_storage, value) == 0)
return 0;
else
return -1;
}
/* Returns the thread's local storage pointer. */
void *
__objc_thread_get_data(void)
{
return pthread_getspecific(_objc_thread_storage);
}
/* Backend mutex functions */
/* Allocate a mutex. */
int
__objc_mutex_allocate(objc_mutex_t mutex)
{
mutex->backend = objc_malloc(sizeof(pthread_mutex_t));
if (pthread_mutex_init((pthread_mutex_t *)mutex->backend, NULL))
{
objc_free(mutex->backend);
mutex->backend = NULL;
return -1;
}
return 0;
}
/* Deallocate a mutex. */
int
__objc_mutex_deallocate(objc_mutex_t mutex)
{
int count = 1;
/*
* Posix Threads specifically require that the thread be unlocked for
* pthread_mutex_destroy to work.
*/
while (count)
{
if ((count = pthread_mutex_unlock((pthread_mutex_t*)mutex->backend)) < 0)
return -1;
}
if (pthread_mutex_destroy((pthread_mutex_t *)mutex->backend))
return -1;
objc_free(mutex->backend);
mutex->backend = NULL;
return 0;
}
/* Grab a lock on a mutex. */
int
__objc_mutex_lock(objc_mutex_t mutex)
{
if (pthread_mutex_lock((pthread_mutex_t *)mutex->backend) == 0)
return 0;
else
return -1;
}
/* Try to grab a lock on a mutex. */
int
__objc_mutex_trylock(objc_mutex_t mutex)
{
if (pthread_mutex_trylock((pthread_mutex_t *)mutex->backend) == 0)
return 0;
else
return -1;
}
/* Unlock the mutex */
int
__objc_mutex_unlock(objc_mutex_t mutex)
{
if (pthread_mutex_unlock((pthread_mutex_t *)mutex->backend) == 0)
return 0;
else
return -1;
}
/* Backend condition mutex functions */
/* Allocate a condition. */
int
__objc_condition_allocate(objc_condition_t condition)
{
condition->backend = objc_malloc(sizeof(pthread_cond_t));
if (pthread_cond_init((pthread_cond_t *)condition->backend, NULL))
{
objc_free(condition->backend);
condition->backend = NULL;
return -1;
}
return 0;
}
/* Deallocate a condition. */
int
__objc_condition_deallocate(objc_condition_t condition)
{
if (pthread_cond_destroy((pthread_cond_t *)condition->backend))
return -1;
objc_free(condition->backend);
condition->backend = NULL;
return 0;
}
/* Wait on the condition */
int
__objc_condition_wait(objc_condition_t condition, objc_mutex_t mutex)
{
if (pthread_cond_wait((pthread_cond_t *)condition->backend,
(pthread_mutex_t *)mutex->backend) == 0)
return 0;
else
return -1;
}
/* Wake up all threads waiting on this condition. */
int
__objc_condition_broadcast(objc_condition_t condition)
{
if (pthread_cond_broadcast((pthread_cond_t *)condition->backend) == 0)
return 0;
else
return -1;
}
/* Wake up one thread waiting on this condition. */
int
__objc_condition_signal(objc_condition_t condition)
{
if (pthread_cond_signal((pthread_cond_t *)condition->backend) == 0)
return 0;
else
return -1;
}

218
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@ -1,218 +0,0 @@
/* GNU Objective C Runtime Thread Implementation for PCThreads under GNU/Linux.
Copyright (C) 1996, 1997 Free Software Foundation, Inc.
Contributed by Scott Christley <scottc@net-community.com>
Condition functions added by: Mircea Oancea <mircea@first.elcom.pub.ro>
This file is part of GCC.
GCC is free software; you can redistribute it and/or modify it under the
terms of the GNU General Public License as published by the Free Software
Foundation; either version 2, or (at your option) any later version.
GCC is distributed in the hope that it will be useful, but WITHOUT ANY
WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
details.
You should have received a copy of the GNU General Public License
along with GCC; see the file COPYING. If not, write to
the Free Software Foundation, 51 Franklin Street, Fifth Floor,
Boston, MA 02110-1301, USA. */
/* As a special exception, if you link this library with files compiled with
GCC to produce an executable, this does not cause the resulting executable
to be covered by the GNU General Public License. This exception does not
however invalidate any other reasons why the executable file might be
covered by the GNU General Public License. */
#include <pcthread.h>
#include "objc/thr.h"
#include "objc/runtime.h"
/* Key structure for maintaining thread specific storage */
static pthread_key_t _objc_thread_storage;
/* Backend initialization functions */
/* Initialize the threads subsystem. */
int
__objc_init_thread_system(void)
{
/* Initialize the thread storage key */
return pthread_key_create(&_objc_thread_storage, NULL);
}
/* Close the threads subsystem. */
int
__objc_close_thread_system(void)
{
/* Destroy the thread storage key */
/* Not implemented yet */
/* return pthread_key_delete(&_objc_thread_storage); */
return 0;
}
/* Backend thread functions */
/* Create a new thread of execution. */
objc_thread_t
__objc_thread_detach(void (*func)(void *arg), void *arg)
{
objc_thread_t thread_id;
pthread_t new_thread_handle;
if ( !(pthread_create(&new_thread_handle, NULL, (void *)func, arg)) )
thread_id = *(objc_thread_t *)&new_thread_handle;
else
thread_id = NULL;
return thread_id;
}
/* Set the current thread's priority. */
int
__objc_thread_set_priority(int priority)
{
/* Not implemented yet */
return -1;
}
/* Return the current thread's priority. */
int
__objc_thread_get_priority(void)
{
/* Not implemented yet */
return OBJC_THREAD_INTERACTIVE_PRIORITY;
}
/* Yield our process time to another thread. */
void
__objc_thread_yield(void)
{
pthread_yield(NULL);
}
/* Terminate the current thread. */
int
__objc_thread_exit(void)
{
/* exit the thread */
pthread_exit(&__objc_thread_exit_status);
/* Failed if we reached here */
return -1;
}
/* Returns an integer value which uniquely describes a thread. */
objc_thread_t
__objc_thread_id(void)
{
pthread_t self = pthread_self();
return *(objc_thread_t *)&self;
}
/* Sets the thread's local storage pointer. */
int
__objc_thread_set_data(void *value)
{
return pthread_setspecific(_objc_thread_storage, value);
}
/* Returns the thread's local storage pointer. */
void *
__objc_thread_get_data(void)
{
void *value = NULL;
if ( !(pthread_getspecific(_objc_thread_storage, &value)) )
return value;
return NULL;
}
/* Backend mutex functions */
/* Allocate a mutex. */
int
__objc_mutex_allocate(objc_mutex_t mutex)
{
if (pthread_mutex_init((pthread_mutex_t *)(&(mutex->backend)), NULL))
return -1;
else
return 0;
}
/* Deallocate a mutex. */
int
__objc_mutex_deallocate(objc_mutex_t mutex)
{
if (pthread_mutex_destroy((pthread_mutex_t *)(&(mutex->backend))))
return -1;
else
return 0;
}
/* Grab a lock on a mutex. */
int
__objc_mutex_lock(objc_mutex_t mutex)
{
return pthread_mutex_lock((pthread_mutex_t *)(&(mutex->backend)));
}
/* Try to grab a lock on a mutex. */
int
__objc_mutex_trylock(objc_mutex_t mutex)
{
return pthread_mutex_trylock((pthread_mutex_t *)(&(mutex->backend)));
}
/* Unlock the mutex */
int
__objc_mutex_unlock(objc_mutex_t mutex)
{
return pthread_mutex_unlock((pthread_mutex_t *)(&(mutex->backend)));
}
/* Backend condition mutex functions */
/* Allocate a condition. */
int
__objc_condition_allocate(objc_condition_t condition)
{
if (pthread_cond_init((pthread_cond_t *)(&(condition->backend)), NULL))
return -1;
else
return 0;
}
/* Deallocate a condition. */
int
__objc_condition_deallocate(objc_condition_t condition)
{
return pthread_cond_destroy((pthread_cond_t *)(&(condition->backend)));
}
/* Wait on the condition */
int
__objc_condition_wait(objc_condition_t condition, objc_mutex_t mutex)
{
return pthread_cond_wait((pthread_cond_t *)(&(condition->backend)),
(pthread_mutex_t *)(&(mutex->backend)));
}
/* Wake up all threads waiting on this condition. */
int
__objc_condition_broadcast(objc_condition_t condition)
{
return pthread_cond_broadcast((pthread_cond_t *)(&(condition->backend)));
}
/* Wake up one thread waiting on this condition. */
int
__objc_condition_signal(objc_condition_t condition)
{
return pthread_cond_signal((pthread_cond_t *)(&(condition->backend)));
}
/* End of File */

194
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/* GNU Objective C Runtime Thread Implementation
Copyright (C) 1996, 1997 Free Software Foundation, Inc.
Contributed by Galen C. Hunt (gchunt@cs.rochester.edu)
Renamed from thr-vxworks.c to thr-rtems.c by
Ralf Corsepius (corsepiu@faw.uni-ulm.de)
This file is part of GCC.
GCC is free software; you can redistribute it and/or modify it under the
terms of the GNU General Public License as published by the Free Software
Foundation; either version 2, or (at your option) any later version.
GCC is distributed in the hope that it will be useful, but WITHOUT ANY
WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
details.
You should have received a copy of the GNU General Public License along with
GCC; see the file COPYING. If not, write to the Free Software
Foundation, 51 Franklin Street, Fifth Floor,
Boston, MA 02110-1301, USA. */
/* As a special exception, if you link this library with files compiled with
GCC to produce an executable, this does not cause the resulting executable
to be covered by the GNU General Public License. This exception does not
however invalidate any other reasons why the executable file might be
covered by the GNU General Public License. */
#include "objc/thr.h"
#include "objc/runtime.h"
/* Thread local storage for a single thread */
static void *thread_local_storage = NULL;
/* Backend initialization functions */
/* Initialize the threads subsystem. */
int
__objc_init_thread_system(void)
{
/* No thread support available */
return -1;
}
/* Close the threads subsystem. */
int
__objc_close_thread_system(void)
{
/* No thread support available */
return -1;
}
/* Backend thread functions */
/* Create a new thread of execution. */
objc_thread_t
__objc_thread_detach(void (*func)(void *arg), void *arg)
{
/* No thread support available */
return NULL;
}
/* Set the current thread's priority. */
int
__objc_thread_set_priority(int priority)
{
/* No thread support available */
return -1;
}
/* Return the current thread's priority. */
int
__objc_thread_get_priority(void)
{
return OBJC_THREAD_INTERACTIVE_PRIORITY;
}
/* Yield our process time to another thread. */
void
__objc_thread_yield(void)
{
return;
}
/* Terminate the current thread. */
int
__objc_thread_exit(void)
{
/* No thread support available */
/* Should we really exit the program */
/* exit(&__objc_thread_exit_status); */
return -1;
}
/* Returns an integer value which uniquely describes a thread. */
objc_thread_t
__objc_thread_id(void)
{
/* No thread support, use 1. */
return (objc_thread_t)1;
}
/* Sets the thread's local storage pointer. */
int
__objc_thread_set_data(void *value)
{
thread_local_storage = value;
return 0;
}
/* Returns the thread's local storage pointer. */
void *
__objc_thread_get_data(void)
{
return thread_local_storage;
}
/* Backend mutex functions */
/* Allocate a mutex. */
int
__objc_mutex_allocate(objc_mutex_t mutex)
{
return 0;
}
/* Deallocate a mutex. */
int
__objc_mutex_deallocate(objc_mutex_t mutex)
{
return 0;
}
/* Grab a lock on a mutex. */
int
__objc_mutex_lock(objc_mutex_t mutex)
{
/* There can only be one thread, so we always get the lock */
return 0;
}
/* Try to grab a lock on a mutex. */
int
__objc_mutex_trylock(objc_mutex_t mutex)
{
/* There can only be one thread, so we always get the lock */
return 0;
}
/* Unlock the mutex */
int
__objc_mutex_unlock(objc_mutex_t mutex)
{
return 0;
}
/* Backend condition mutex functions */
/* Allocate a condition. */
int
__objc_condition_allocate(objc_condition_t condition)
{
return 0;
}
/* Deallocate a condition. */
int
__objc_condition_deallocate(objc_condition_t condition)
{
return 0;
}
/* Wait on the condition */
int
__objc_condition_wait(objc_condition_t condition, objc_mutex_t mutex)
{
return 0;
}
/* Wake up all threads waiting on this condition. */
int
__objc_condition_broadcast(objc_condition_t condition)
{
return 0;
}
/* Wake up one thread waiting on this condition. */
int
__objc_condition_signal(objc_condition_t condition)
{
return 0;
}
/* End of File */

192
contrib/libobjc/thr-single.c
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@ -1,192 +0,0 @@
/* GNU Objective C Runtime Thread Implementation
Copyright (C) 1996, 1997 Free Software Foundation, Inc.
Contributed by Galen C. Hunt (gchunt@cs.rochester.edu)
This file is part of GCC.
GCC is free software; you can redistribute it and/or modify it under the
terms of the GNU General Public License as published by the Free Software
Foundation; either version 2, or (at your option) any later version.
GCC is distributed in the hope that it will be useful, but WITHOUT ANY
WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
details.
You should have received a copy of the GNU General Public License along with
GCC; see the file COPYING. If not, write to the Free Software
Foundation, 51 Franklin Street, Fifth Floor,
Boston, MA 02110-1301, USA. */
/* As a special exception, if you link this library with files compiled with
GCC to produce an executable, this does not cause the resulting executable
to be covered by the GNU General Public License. This exception does not
however invalidate any other reasons why the executable file might be
covered by the GNU General Public License. */
#include "objc/thr.h"
#include "objc/runtime.h"
/* Thread local storage for a single thread */
static void *thread_local_storage = NULL;
/* Backend initialization functions */
/* Initialize the threads subsystem. */
int
__objc_init_thread_system(void)
{
/* No thread support available */
return -1;
}
/* Close the threads subsystem. */
int
__objc_close_thread_system(void)
{
/* No thread support available */
return -1;
}
/* Backend thread functions */
/* Create a new thread of execution. */
objc_thread_t
__objc_thread_detach(void (*func)(void *arg), void *arg)
{
/* No thread support available */
return NULL;
}
/* Set the current thread's priority. */
int
__objc_thread_set_priority(int priority)
{
/* No thread support available */
return -1;
}
/* Return the current thread's priority. */
int
__objc_thread_get_priority(void)
{
return OBJC_THREAD_INTERACTIVE_PRIORITY;
}
/* Yield our process time to another thread. */
void
__objc_thread_yield(void)
{
return;
}
/* Terminate the current thread. */
int
__objc_thread_exit(void)
{
/* No thread support available */
/* Should we really exit the program */
/* exit(&__objc_thread_exit_status); */
return -1;
}
/* Returns an integer value which uniquely describes a thread. */
objc_thread_t
__objc_thread_id(void)
{
/* No thread support, use 1. */
return (objc_thread_t)1;
}
/* Sets the thread's local storage pointer. */
int
__objc_thread_set_data(void *value)
{
thread_local_storage = value;
return 0;
}
/* Returns the thread's local storage pointer. */
void *
__objc_thread_get_data(void)
{
return thread_local_storage;
}
/* Backend mutex functions */
/* Allocate a mutex. */
int
__objc_mutex_allocate(objc_mutex_t mutex)
{
return 0;
}
/* Deallocate a mutex. */
int
__objc_mutex_deallocate(objc_mutex_t mutex)
{
return 0;
}
/* Grab a lock on a mutex. */
int
__objc_mutex_lock(objc_mutex_t mutex)
{
/* There can only be one thread, so we always get the lock */
return 0;
}
/* Try to grab a lock on a mutex. */
int
__objc_mutex_trylock(objc_mutex_t mutex)
{
/* There can only be one thread, so we always get the lock */
return 0;
}
/* Unlock the mutex */
int
__objc_mutex_unlock(objc_mutex_t mutex)
{
return 0;
}
/* Backend condition mutex functions */
/* Allocate a condition. */
int
__objc_condition_allocate(objc_condition_t condition)
{
return 0;
}
/* Deallocate a condition. */
int
__objc_condition_deallocate(objc_condition_t condition)
{
return 0;
}
/* Wait on the condition */
int
__objc_condition_wait(objc_condition_t condition, objc_mutex_t mutex)
{
return 0;
}
/* Wake up all threads waiting on this condition. */
int
__objc_condition_broadcast(objc_condition_t condition)
{
return 0;
}
/* Wake up one thread waiting on this condition. */
int
__objc_condition_signal(objc_condition_t condition)
{
return 0;
}
/* End of File */

259
contrib/libobjc/thr-solaris.c
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@ -1,259 +0,0 @@
/* GNU Objective C Runtime Thread Interface
Copyright (C) 1996, 1997 Free Software Foundation, Inc.
Contributed by Galen C. Hunt (gchunt@cs.rochester.edu)
Conditions added by Mircea Oancea (mircea@first.elcom.pub.ro)
This file is part of GCC.
GCC is free software; you can redistribute it and/or modify it under the
terms of the GNU General Public License as published by the Free Software
Foundation; either version 2, or (at your option) any later version.
GCC is distributed in the hope that it will be useful, but WITHOUT ANY
WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
details.
You should have received a copy of the GNU General Public License along with
GCC; see the file COPYING. If not, write to the Free Software
Foundation, 51 Franklin Street, Fifth Floor,
Boston, MA 02110-1301, USA. */
/* As a special exception, if you link this library with files compiled with
GCC to produce an executable, this does not cause the resulting executable
to be covered by the GNU General Public License. This exception does not
however invalidate any other reasons why the executable file might be
covered by the GNU General Public License. */
#include "objc/thr.h"
#include "objc/runtime.h"
#include <thread.h>
#include <synch.h>
#include <errno.h>
/* Key structure for maintaining thread specific storage */
static thread_key_t __objc_thread_data_key;
/* Backend initialization functions */
/* Initialize the threads subsystem. */
int
__objc_init_thread_system(void)
{
/* Initialize the thread storage key */
if (thr_keycreate(&__objc_thread_data_key, NULL) == 0)
return 0;
else
return -1;
}
/* Close the threads subsystem. */
int
__objc_close_thread_system(void)
{
return 0;
}
/* Backend thread functions */
/* Create a new thread of execution. */
objc_thread_t
__objc_thread_detach(void (*func)(void *arg), void *arg)
{
objc_thread_t thread_id;
thread_t new_thread_id = 0;
if (thr_create(NULL, 0, (void *)func, arg,
THR_DETACHED | THR_NEW_LWP,
&new_thread_id) == 0)
thread_id = *(objc_thread_t *)&new_thread_id;
else
thread_id = NULL;
return thread_id;
}
/* Set the current thread's priority. */
int
__objc_thread_set_priority(int priority)
{
int sys_priority = 0;
switch (priority)
{
case OBJC_THREAD_INTERACTIVE_PRIORITY:
sys_priority = 300;
break;
default:
case OBJC_THREAD_BACKGROUND_PRIORITY:
sys_priority = 200;
break;
case OBJC_THREAD_LOW_PRIORITY:
sys_priority = 1000;
break;
}
/* Change priority */
if (thr_setprio(thr_self(), sys_priority) == 0)
return 0;
else
return -1;
}
/* Return the current thread's priority. */
int
__objc_thread_get_priority(void)
{
int sys_priority;
if (thr_getprio(thr_self(), &sys_priority) == 0)
{
if (sys_priority >= 250)
return OBJC_THREAD_INTERACTIVE_PRIORITY;
else if (sys_priority >= 150)
return OBJC_THREAD_BACKGROUND_PRIORITY;
return OBJC_THREAD_LOW_PRIORITY;
}
/* Couldn't get priority. */
return -1;
}
/* Yield our process time to another thread. */
void
__objc_thread_yield(void)
{
thr_yield();
}
/* Terminate the current thread. */
int
__objc_thread_exit(void)
{
/* exit the thread */
thr_exit(&__objc_thread_exit_status);
/* Failed if we reached here */
return -1;
}
/* Returns an integer value which uniquely describes a thread. */
objc_thread_t
__objc_thread_id(void)
{
return (objc_thread_t)thr_self();
}
/* Sets the thread's local storage pointer. */
int
__objc_thread_set_data(void *value)
{
if (thr_setspecific(__objc_thread_data_key, value) == 0)
return 0;
else
return -1;
}
/* Returns the thread's local storage pointer. */
void *
__objc_thread_get_data(void)
{
void *value = NULL;
if (thr_getspecific(__objc_thread_data_key, &value) == 0)
return value;
return NULL;
}
/* Backend mutex functions */
/* Allocate a mutex. */
int
__objc_mutex_allocate(objc_mutex_t mutex)
{
if (mutex_init( (mutex_t *)(&(mutex->backend)), USYNC_THREAD, 0))
return -1;
else
return 0;
}
/* Deallocate a mutex. */
int
__objc_mutex_deallocate(objc_mutex_t mutex)
{
mutex_destroy((mutex_t *)(&(mutex->backend)));
return 0;
}
/* Grab a lock on a mutex. */
int
__objc_mutex_lock(objc_mutex_t mutex)
{
if (mutex_lock((mutex_t *)(&(mutex->backend))) != 0)
return -1;
else
return 0;
}
/* Try to grab a lock on a mutex. */
int
__objc_mutex_trylock(objc_mutex_t mutex)
{
if (mutex_trylock((mutex_t *)(&(mutex->backend))) != 0)
return -1;
else
return 0;
}
/* Unlock the mutex */
int
__objc_mutex_unlock(objc_mutex_t mutex)
{
if (mutex_unlock((mutex_t *)(&(mutex->backend))) != 0)
return -1;
else
return 0;
}
/* Backend condition mutex functions */
/* Allocate a condition. */
int
__objc_condition_allocate(objc_condition_t condition)
{
return cond_init((cond_t *)(&(condition->backend)), USYNC_THREAD, NULL);
}
/* Deallocate a condition. */
int
__objc_condition_deallocate(objc_condition_t condition)
{
return cond_destroy((cond_t *)(&(condition->backend)));
}
/* Wait on the condition */
int
__objc_condition_wait(objc_condition_t condition, objc_mutex_t mutex)
{
return cond_wait((cond_t *)(&(condition->backend)),
(mutex_t *)(&(mutex->backend)));
}
/* Wake up all threads waiting on this condition. */
int
__objc_condition_broadcast(objc_condition_t condition)
{
return cond_broadcast((cond_t *)(&(condition->backend)));
}
/* Wake up one thread waiting on this condition. */
int
__objc_condition_signal(objc_condition_t condition)
{
return cond_signal((cond_t *)(&(condition->backend)));
}
/* End of File */

192
contrib/libobjc/thr-vxworks.c
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@ -1,192 +0,0 @@
/* GNU Objective C Runtime Thread Implementation
Copyright (C) 1996, 1997 Free Software Foundation, Inc.
Contributed by Galen C. Hunt (gchunt@cs.rochester.edu)
This file is part of GCC.
GCC is free software; you can redistribute it and/or modify it under the
terms of the GNU General Public License as published by the Free Software
Foundation; either version 2, or (at your option) any later version.
GCC is distributed in the hope that it will be useful, but WITHOUT ANY
WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
details.
You should have received a copy of the GNU General Public License along with
GCC; see the file COPYING. If not, write to the Free Software
Foundation, 51 Franklin Street, Fifth Floor,
Boston, MA 02110-1301, USA. */
/* As a special exception, if you link this library with files compiled with
GCC to produce an executable, this does not cause the resulting executable
to be covered by the GNU General Public License. This exception does not
however invalidate any other reasons why the executable file might be
covered by the GNU General Public License. */
#include "objc/thr.h"
#include "objc/runtime.h"
/* Thread local storage for a single thread */
static void *thread_local_storage = NULL;
/* Backend initialization functions */
/* Initialize the threads subsystem. */
int
__objc_init_thread_system(void)
{
/* No thread support available */
return -1;
}
/* Close the threads subsystem. */
int
__objc_close_thread_system(void)
{
/* No thread support available */
return -1;
}
/* Backend thread functions */
/* Create a new thread of execution. */
objc_thread_t
__objc_thread_detach(void (*func)(void *arg), void *arg)
{
/* No thread support available */
return NULL;
}
/* Set the current thread's priority. */
int
__objc_thread_set_priority(int priority)
{
/* No thread support available */
return -1;
}
/* Return the current thread's priority. */
int
__objc_thread_get_priority(void)
{
return OBJC_THREAD_INTERACTIVE_PRIORITY;
}
/* Yield our process time to another thread. */
void
__objc_thread_yield(void)
{
return;
}
/* Terminate the current thread. */
int
__objc_thread_exit(void)
{
/* No thread support available */
/* Should we really exit the program */
/* exit(&__objc_thread_exit_status); */
return -1;
}
/* Returns an integer value which uniquely describes a thread. */
objc_thread_t
__objc_thread_id(void)
{
/* No thread support, use 1. */
return (objc_thread_t)1;
}
/* Sets the thread's local storage pointer. */
int
__objc_thread_set_data(void *value)
{
thread_local_storage = value;
return 0;
}
/* Returns the thread's local storage pointer. */
void *
__objc_thread_get_data(void)
{
return thread_local_storage;
}
/* Backend mutex functions */
/* Allocate a mutex. */
int
__objc_mutex_allocate(objc_mutex_t mutex)
{
return 0;
}
/* Deallocate a mutex. */
int
__objc_mutex_deallocate(objc_mutex_t mutex)
{
return 0;
}
/* Grab a lock on a mutex. */
int
__objc_mutex_lock(objc_mutex_t mutex)
{
/* There can only be one thread, so we always get the lock */
return 0;
}
/* Try to grab a lock on a mutex. */
int
__objc_mutex_trylock(objc_mutex_t mutex)
{
/* There can only be one thread, so we always get the lock */
return 0;
}
/* Unlock the mutex */
int
__objc_mutex_unlock(objc_mutex_t mutex)
{
return 0;
}
/* Backend condition mutex functions */
/* Allocate a condition. */
int
__objc_condition_allocate(objc_condition_t condition)
{
return 0;
}
/* Deallocate a condition. */
int
__objc_condition_deallocate(objc_condition_t condition)
{
return 0;
}
/* Wait on the condition */
int
__objc_condition_wait(objc_condition_t condition, objc_mutex_t mutex)
{
return 0;
}
/* Wake up all threads waiting on this condition. */
int
__objc_condition_broadcast(objc_condition_t condition)
{
return 0;
}
/* Wake up one thread waiting on this condition. */
int
__objc_condition_signal(objc_condition_t condition)
{
return 0;
}
/* End of File */

272
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@ -1,272 +0,0 @@
/* GNU Objective C Runtime Thread Interface - Win32 Implementation
Copyright (C) 1996, 1997 Free Software Foundation, Inc.
Contributed by Galen C. Hunt (gchunt@cs.rochester.edu)
This file is part of GCC.
GCC is free software; you can redistribute it and/or modify it under the
terms of the GNU General Public License as published by the Free Software
Foundation; either version 2, or (at your option) any later version.
GCC is distributed in the hope that it will be useful, but WITHOUT ANY
WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
details.
You should have received a copy of the GNU General Public License along with
GCC; see the file COPYING. If not, write to the Free Software
Foundation, 51 Franklin Street, Fifth Floor,
Boston, MA 02110-1301, USA. */
/* As a special exception, if you link this library with files compiled with
GCC to produce an executable, this does not cause the resulting executable
to be covered by the GNU General Public License. This exception does not
however invalidate any other reasons why the executable file might be
covered by the GNU General Public License. */
#include "objc/thr.h"
#include "objc/runtime.h"
#ifndef __OBJC__
#define __OBJC__
#endif
#include <windows.h>
/* Key structure for maintaining thread specific storage */
static DWORD __objc_data_tls = (DWORD)-1;
/* Backend initialization functions */
/* Initialize the threads subsystem. */
int
__objc_init_thread_system(void)
{
/* Initialize the thread storage key */
if ((__objc_data_tls = TlsAlloc()) != (DWORD)-1)
return 0;
else
return -1;
}
/* Close the threads subsystem. */
int
__objc_close_thread_system(void)
{
if (__objc_data_tls != (DWORD)-1)
TlsFree(__objc_data_tls);
return 0;
}
/* Backend thread functions */
/* Create a new thread of execution. */
objc_thread_t
__objc_thread_detach(void (*func)(void *arg), void *arg)
{
DWORD thread_id = 0;
HANDLE win32_handle;
if (!(win32_handle = CreateThread(NULL, 0, (LPTHREAD_START_ROUTINE)func,
arg, 0, &thread_id)))
thread_id = 0;
return (objc_thread_t)thread_id;
}
/* Set the current thread's priority. */
int
__objc_thread_set_priority(int priority)
{
int sys_priority = 0;
switch (priority)
{
case OBJC_THREAD_INTERACTIVE_PRIORITY:
sys_priority = THREAD_PRIORITY_NORMAL;
break;
default:
case OBJC_THREAD_BACKGROUND_PRIORITY:
sys_priority = THREAD_PRIORITY_BELOW_NORMAL;
break;
case OBJC_THREAD_LOW_PRIORITY:
sys_priority = THREAD_PRIORITY_LOWEST;
break;
}
/* Change priority */
if (SetThreadPriority(GetCurrentThread(), sys_priority))
return 0;
else
return -1;
}
/* Return the current thread's priority. */
int
__objc_thread_get_priority(void)
{
int sys_priority;
sys_priority = GetThreadPriority(GetCurrentThread());
switch (sys_priority)
{
case THREAD_PRIORITY_HIGHEST:
case THREAD_PRIORITY_TIME_CRITICAL:
case THREAD_PRIORITY_ABOVE_NORMAL:
case THREAD_PRIORITY_NORMAL:
return OBJC_THREAD_INTERACTIVE_PRIORITY;
default:
case THREAD_PRIORITY_BELOW_NORMAL:
return OBJC_THREAD_BACKGROUND_PRIORITY;
case THREAD_PRIORITY_IDLE:
case THREAD_PRIORITY_LOWEST:
return OBJC_THREAD_LOW_PRIORITY;
}
/* Couldn't get priority. */
return -1;
}
/* Yield our process time to another thread. */
void
__objc_thread_yield(void)
{
Sleep(0);
}
/* Terminate the current thread. */
int
__objc_thread_exit(void)
{
/* exit the thread */
ExitThread(__objc_thread_exit_status);
/* Failed if we reached here */
return -1;
}
/* Returns an integer value which uniquely describes a thread. */
objc_thread_t
__objc_thread_id(void)
{
return (objc_thread_t)GetCurrentThreadId();
}
/* Sets the thread's local storage pointer. */
int
__objc_thread_set_data(void *value)
{
if (TlsSetValue(__objc_data_tls, value))
return 0;
else
return -1;
}
/* Returns the thread's local storage pointer. */
void *
__objc_thread_get_data(void)
{
return TlsGetValue(__objc_data_tls); /* Return thread data. */
}
/* Backend mutex functions */
/* Allocate a mutex. */
int
__objc_mutex_allocate(objc_mutex_t mutex)
{
if ((mutex->backend = (void *)CreateMutex(NULL, 0, NULL)) == NULL)
return -1;
else
return 0;
}
/* Deallocate a mutex. */
int
__objc_mutex_deallocate(objc_mutex_t mutex)
{
CloseHandle((HANDLE)(mutex->backend));
return 0;
}
/* Grab a lock on a mutex. */
int
__objc_mutex_lock(objc_mutex_t mutex)
{
int status;
status = WaitForSingleObject((HANDLE)(mutex->backend), INFINITE);
if (status != WAIT_OBJECT_0 && status != WAIT_ABANDONED)
return -1;
else
return 0;
}
/* Try to grab a lock on a mutex. */
int
__objc_mutex_trylock(objc_mutex_t mutex)
{
int status;
status = WaitForSingleObject((HANDLE)(mutex->backend), 0);
if (status != WAIT_OBJECT_0 && status != WAIT_ABANDONED)
return -1;
else
return 0;
}
/* Unlock the mutex */
int
__objc_mutex_unlock(objc_mutex_t mutex)
{
if (ReleaseMutex((HANDLE)(mutex->backend)) == 0)
return -1;
else
return 0;
}
/* Backend condition mutex functions */
/* Allocate a condition. */
int
__objc_condition_allocate(objc_condition_t condition)
{
/* Unimplemented. */
return -1;
}
/* Deallocate a condition. */
int
__objc_condition_deallocate(objc_condition_t condition)
{
/* Unimplemented. */
return -1;
}
/* Wait on the condition */
int
__objc_condition_wait(objc_condition_t condition, objc_mutex_t mutex)
{
/* Unimplemented. */
return -1;
}
/* Wake up all threads waiting on this condition. */
int
__objc_condition_broadcast(objc_condition_t condition)
{
/* Unimplemented. */
return -1;
}
/* Wake up one thread waiting on this condition. */
int
__objc_condition_signal(objc_condition_t condition)
{
/* Unimplemented. */
return -1;
}
/* End of File */

563
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/* GNU Objective C Runtime Thread Interface
Copyright (C) 1996, 1997 Free Software Foundation, Inc.
Contributed by Galen C. Hunt (gchunt@cs.rochester.edu)
This file is part of GCC.
GCC is free software; you can redistribute it and/or modify it under the
terms of the GNU General Public License as published by the Free Software
Foundation; either version 2, or (at your option) any later version.
GCC is distributed in the hope that it will be useful, but WITHOUT ANY
WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
details.
You should have received a copy of the GNU General Public License along with
GCC; see the file COPYING. If not, write to the Free Software
Foundation, 51 Franklin Street, Fifth Floor,
Boston, MA 02110-1301, USA. */
/* As a special exception, if you link this library with files compiled with
GCC to produce an executable, this does not cause the resulting executable
to be covered by the GNU General Public License. This exception does not
however invalidate any other reasons why the executable file might be
covered by the GNU General Public License. */
#include <stdlib.h>
#include "objc/runtime.h"
/* Global exit status. */
int __objc_thread_exit_status = 0;
/* Flag which lets us know if we ever became multi threaded */
int __objc_is_multi_threaded = 0;
/* The hook function called when the runtime becomes multi threaded */
objc_thread_callback _objc_became_multi_threaded = NULL;
/*
Use this to set the hook function that will be called when the
runtime initially becomes multi threaded.
The hook function is only called once, meaning only when the
2nd thread is spawned, not for each and every thread.
It returns the previous hook function or NULL if there is none.
A program outside of the runtime could set this to some function so
it can be informed; for example, the GNUstep Base Library sets it
so it can implement the NSBecomingMultiThreaded notification.
*/
objc_thread_callback objc_set_thread_callback (objc_thread_callback func)
{
objc_thread_callback temp = _objc_became_multi_threaded;
_objc_became_multi_threaded = func;
return temp;
}
/*
Private functions
These functions are utilized by the frontend, but they are not
considered part of the public interface.
*/
/*
First function called in a thread, starts everything else.
This function is passed to the backend by objc_thread_detach
as the starting function for a new thread.
*/
struct __objc_thread_start_state
{
SEL selector;
id object;
id argument;
};
static void __attribute__((noreturn))
__objc_thread_detach_function (struct __objc_thread_start_state *istate)
{
/* Valid state? */
if (istate) {
id (*imp) (id, SEL, id);
SEL selector = istate->selector;
id object = istate->object;
id argument = istate->argument;
/* Don't need anymore so free it */
objc_free (istate);
/* Clear out the thread local storage */
objc_thread_set_data (NULL);
/* Check to see if we just became multi threaded */
if (! __objc_is_multi_threaded)
{
__objc_is_multi_threaded = 1;
/* Call the hook function */
if (_objc_became_multi_threaded != NULL)
(*_objc_became_multi_threaded) ();
}
/* Call the method */
if ((imp = (id (*) (id, SEL, id))objc_msg_lookup (object, selector)))
(*imp) (object, selector, argument);
else
objc_error (object, OBJC_ERR_UNIMPLEMENTED,
"objc_thread_detach called with bad selector.\n");
}
else
objc_error (nil, OBJC_ERR_BAD_STATE,
"objc_thread_detach called with NULL state.\n");
/* Exit the thread */
objc_thread_exit ();
}
/*
Frontend functions
These functions constitute the public interface to the Objective-C thread
and mutex functionality.
*/
/* Frontend thread functions */
/*
Detach a new thread of execution and return its id. Returns NULL if fails.
Thread is started by sending message with selector to object. Message
takes a single argument.
*/
objc_thread_t
objc_thread_detach (SEL selector, id object, id argument)
{
struct __objc_thread_start_state *istate;
objc_thread_t thread_id = NULL;
/* Allocate the state structure */
if (! (istate = (struct __objc_thread_start_state *)
objc_malloc (sizeof (*istate))))
return NULL;
/* Initialize the state structure */
istate->selector = selector;
istate->object = object;
istate->argument = argument;
/* lock access */
objc_mutex_lock (__objc_runtime_mutex);
/* Call the backend to spawn the thread */
if ((thread_id = __objc_thread_detach ((void *)__objc_thread_detach_function,
istate)) == NULL)
{
/* failed! */
objc_mutex_unlock (__objc_runtime_mutex);
objc_free (istate);
return NULL;
}
/* Increment our thread counter */
__objc_runtime_threads_alive++;
objc_mutex_unlock (__objc_runtime_mutex);
return thread_id;
}
/* Set the current thread's priority. */
int
objc_thread_set_priority (int priority)
{
/* Call the backend */
return __objc_thread_set_priority (priority);
}
/* Return the current thread's priority. */
int
objc_thread_get_priority (void)
{
/* Call the backend */
return __objc_thread_get_priority ();
}
/*
Yield our process time to another thread. Any BUSY waiting that is done
by a thread should use this function to make sure that other threads can
make progress even on a lazy uniprocessor system.
*/
void
objc_thread_yield (void)
{
/* Call the backend */
__objc_thread_yield ();
}
/*
Terminate the current tread. Doesn't return.
Actually, if it failed returns -1.
*/
int
objc_thread_exit (void)
{
/* Decrement our counter of the number of threads alive */
objc_mutex_lock (__objc_runtime_mutex);
__objc_runtime_threads_alive--;
objc_mutex_unlock (__objc_runtime_mutex);
/* Call the backend to terminate the thread */
return __objc_thread_exit ();
}
/*
Returns an integer value which uniquely describes a thread. Must not be
NULL which is reserved as a marker for "no thread".
*/
objc_thread_t
objc_thread_id (void)
{
/* Call the backend */
return __objc_thread_id ();
}
/*
Sets the thread's local storage pointer.
Returns 0 if successful or -1 if failed.
*/
int
objc_thread_set_data (void *value)
{
/* Call the backend */
return __objc_thread_set_data (value);
}
/*
Returns the thread's local storage pointer. Returns NULL on failure.
*/
void *
objc_thread_get_data (void)
{
/* Call the backend */
return __objc_thread_get_data ();
}
/* Frontend mutex functions */
/*
Allocate a mutex. Return the mutex pointer if successful or NULL if the
allocation failed for any reason.
*/
objc_mutex_t
objc_mutex_allocate (void)
{
objc_mutex_t mutex;
/* Allocate the mutex structure */
if (! (mutex = (objc_mutex_t)objc_malloc (sizeof (struct objc_mutex))))
return NULL;
/* Call backend to create the mutex */
if (__objc_mutex_allocate (mutex))
{
/* failed! */
objc_free (mutex);
return NULL;
}
/* Initialize mutex */
mutex->owner = NULL;
mutex->depth = 0;
return mutex;
}
/*
Deallocate a mutex. Note that this includes an implicit mutex_lock to
insure that no one else is using the lock. It is legal to deallocate
a lock if we have a lock on it, but illegal to deallocate a lock held
by anyone else.
Returns the number of locks on the thread. (1 for deallocate).
*/
int
objc_mutex_deallocate (objc_mutex_t mutex)
{
int depth;
/* Valid mutex? */
if (! mutex)
return -1;
/* Acquire lock on mutex */
depth = objc_mutex_lock (mutex);
/* Call backend to destroy mutex */
if (__objc_mutex_deallocate (mutex))
return -1;
/* Free the mutex structure */
objc_free (mutex);
/* Return last depth */
return depth;
}
/*
Grab a lock on a mutex. If this thread already has a lock on this mutex
then we increment the lock count. If another thread has a lock on the
mutex we block and wait for the thread to release the lock.
Returns the lock count on the mutex held by this thread.
*/
int
objc_mutex_lock (objc_mutex_t mutex)
{
objc_thread_t thread_id;
int status;
/* Valid mutex? */
if (! mutex)
return -1;
/* If we already own the lock then increment depth */
thread_id = __objc_thread_id ();
if (mutex->owner == thread_id)
return ++mutex->depth;
/* Call the backend to lock the mutex */
status = __objc_mutex_lock (mutex);
/* Failed? */
if (status)
return status;
/* Successfully locked the thread */
mutex->owner = thread_id;
return mutex->depth = 1;
}
/*
Try to grab a lock on a mutex. If this thread already has a lock on
this mutex then we increment the lock count and return it. If another
thread has a lock on the mutex returns -1.
*/
int
objc_mutex_trylock (objc_mutex_t mutex)
{
objc_thread_t thread_id;
int status;
/* Valid mutex? */
if (! mutex)
return -1;
/* If we already own the lock then increment depth */
thread_id = __objc_thread_id ();
if (mutex->owner == thread_id)
return ++mutex->depth;
/* Call the backend to try to lock the mutex */
status = __objc_mutex_trylock (mutex);
/* Failed? */
if (status)
return status;
/* Successfully locked the thread */
mutex->owner = thread_id;
return mutex->depth = 1;
}
/*
Unlocks the mutex by one level.
Decrements the lock count on this mutex by one.
If the lock count reaches zero, release the lock on the mutex.
Returns the lock count on the mutex.
It is an error to attempt to unlock a mutex which this thread
doesn't hold in which case return -1 and the mutex is unaffected.
*/
int
objc_mutex_unlock (objc_mutex_t mutex)
{
objc_thread_t thread_id;
int status;
/* Valid mutex? */
if (! mutex)
return -1;
/* If another thread owns the lock then abort */
thread_id = __objc_thread_id ();
if (mutex->owner != thread_id)
return -1;
/* Decrement depth and return */
if (mutex->depth > 1)
return --mutex->depth;
/* Depth down to zero so we are no longer the owner */
mutex->depth = 0;
mutex->owner = NULL;
/* Have the backend unlock the mutex */
status = __objc_mutex_unlock (mutex);
/* Failed? */
if (status)
return status;
return 0;
}
/* Frontend condition mutex functions */
/*
Allocate a condition. Return the condition pointer if successful or NULL
if the allocation failed for any reason.
*/
objc_condition_t
objc_condition_allocate (void)
{
objc_condition_t condition;
/* Allocate the condition mutex structure */
if (! (condition =
(objc_condition_t) objc_malloc (sizeof (struct objc_condition))))
return NULL;
/* Call the backend to create the condition mutex */
if (__objc_condition_allocate (condition))
{
/* failed! */
objc_free (condition);
return NULL;
}
/* Success! */
return condition;
}
/*
Deallocate a condition. Note that this includes an implicit
condition_broadcast to insure that waiting threads have the opportunity
to wake. It is legal to dealloc a condition only if no other
thread is/will be using it. Here we do NOT check for other threads
waiting but just wake them up.
*/
int
objc_condition_deallocate (objc_condition_t condition)
{
/* Broadcast the condition */
if (objc_condition_broadcast (condition))
return -1;
/* Call the backend to destroy */
if (__objc_condition_deallocate (condition))
return -1;
/* Free the condition mutex structure */
objc_free (condition);
return 0;
}
/*
Wait on the condition unlocking the mutex until objc_condition_signal ()
or objc_condition_broadcast () are called for the same condition. The
given mutex *must* have the depth set to 1 so that it can be unlocked
here, so that someone else can lock it and signal/broadcast the condition.
The mutex is used to lock access to the shared data that make up the
"condition" predicate.
*/
int
objc_condition_wait (objc_condition_t condition, objc_mutex_t mutex)
{
objc_thread_t thread_id;
/* Valid arguments? */
if (! mutex || ! condition)
return -1;
/* Make sure we are owner of mutex */
thread_id = __objc_thread_id ();
if (mutex->owner != thread_id)
return -1;
/* Cannot be locked more than once */
if (mutex->depth > 1)
return -1;
/* Virtually unlock the mutex */
mutex->depth = 0;
mutex->owner = (objc_thread_t)NULL;
/* Call the backend to wait */
__objc_condition_wait (condition, mutex);
/* Make ourselves owner of the mutex */
mutex->owner = thread_id;
mutex->depth = 1;
return 0;
}
/*
Wake up all threads waiting on this condition. It is recommended that
the called would lock the same mutex as the threads in objc_condition_wait
before changing the "condition predicate" and make this call and unlock it
right away after this call.
*/
int
objc_condition_broadcast (objc_condition_t condition)
{
/* Valid condition mutex? */
if (! condition)
return -1;
return __objc_condition_broadcast (condition);
}
/*
Wake up one thread waiting on this condition. It is recommended that
the called would lock the same mutex as the threads in objc_condition_wait
before changing the "condition predicate" and make this call and unlock it
right away after this call.
*/
int
objc_condition_signal (objc_condition_t condition)
{
/* Valid condition mutex? */
if (! condition)
return -1;
return __objc_condition_signal (condition);
}
/* Make the objc thread system aware that a thread which is managed
(started, stopped) by external code could access objc facilities
from now on. This is used when you are interfacing with some
external non-objc-based environment/system - you must call
objc_thread_add () before an alien thread makes any calls to
Objective-C. Do not cause the _objc_became_multi_threaded hook to
be executed. */
void
objc_thread_add (void)
{
objc_mutex_lock (__objc_runtime_mutex);
__objc_is_multi_threaded = 1;
__objc_runtime_threads_alive++;
objc_mutex_unlock (__objc_runtime_mutex);
}
/* Make the objc thread system aware that a thread managed (started,
stopped) by some external code will no longer access objc and thus
can be forgotten by the objc thread system. Call
objc_thread_remove () when your alien thread is done with making
calls to Objective-C. */
void
objc_thread_remove (void)
{
objc_mutex_lock (__objc_runtime_mutex);
__objc_runtime_threads_alive--;
objc_mutex_unlock (__objc_runtime_mutex);
}
/* End of File */

2
etc/mtree/BSD.include.dist
View File

@ -283,8 +283,6 @@
..
nfsserver
..
objc
..
openssl
..
pcap

4
gnu/lib/Makefile
View File

@ -11,8 +11,4 @@ SUBDIR= csu libgcc libgcov libdialog libgomp libodialog libregex libreadline \
SUBDIR+= libstdc++ libsupc++
.endif
.if ${MK_OBJC} != "no"
SUBDIR+= libobjc
.endif
.include <bsd.subdir.mk>

50
gnu/lib/libobjc/Makefile
View File

@ -1,50 +0,0 @@
# $FreeBSD$
.include <bsd.own.mk>
OBJCDIR=${.CURDIR}/../../../contrib/libobjc
GCCDIR= ${.CURDIR}/../../../contrib/gcc
GCCLIB= ${.CURDIR}/../../../contrib/gcclibs
.PATH: ${OBJCDIR}/objc ${OBJCDIR}
LIB= objc
SHLIB_MAJOR= 4
SRCS= archive.c class.c encoding.c gc.c hash.c init.c linking.m misc.c \
nil_method.c NXConstStr.m Object.m objects.c Protocol.m sarray.c \
selector.c sendmsg.c thr.c thr-objc.c exception.c
# XXX: clang cannot compile libobjc yet
CC:=${CC:C/^(.*\/)?clang$/gcc/1}
INCS= encoding.h hash.h objc-api.h objc-decls.h objc-list.h objc.h runtime.h \
sarray.h thr.h typedstream.h NXConstStr.h Object.h Protocol.h
INCSDIR=${INCLUDEDIR}/objc
CFLAGS+= -DHAVE_GTHR_DEFAULT -DIN_GCC -DIN_TARGET_LIBS
CFLAGS+= -I. -I${.CURDIR}/../../usr.bin/cc/cc_tools
CFLAGS+= -I${OBJCDIR}/objc -I${OBJCDIR}
CFLAGS+= -I${GCCDIR}/config -I${GCCDIR}
CFLAGS+= -I${GCCLIB}/include
CFLAGS+= -fexceptions -frandom-seed=RepeatabilityConsideredGood
OBJCFLAGS= -fgnu-runtime ${CFLAGS}
GENHDRS= runtime-info.h
runtime-info.h:
`${CC} --print-prog-name=cc1obj` -print-objc-runtime-info \
< /dev/null > ${.TARGET}
.for H in tconfig.h tm.h config.h options.h gthr-default.h unwind.h
$H: ${.CURDIR}/../../usr.bin/cc/cc_tools/Makefile
${MAKE} -f ${.ALLSRC} MFILE=${.ALLSRC} GCCDIR=${GCCDIR} ${.TARGET}
GENHDRS+= $H
.endfor
CLEANFILES+= ${GENHDRS} cs-* optionlist
SRCS+= ${GENHDRS}
${OBJS}: ${GENHDRS}
.include <bsd.lib.mk>

4
gnu/usr.bin/cc/Makefile
View File

@ -15,10 +15,6 @@ SUBDIR+= cpp
SUBDIR+= cc1plus c++ c++filt
.endif
.if ${MK_OBJC} != "no"
SUBDIR+= cc1obj
.endif
.if ${MK_GCOV} != "no"
SUBDIR+= gcov
.endif

28
gnu/usr.bin/cc/cc1obj/Makefile
View File

@ -1,28 +0,0 @@
# $FreeBSD$
.include "../Makefile.inc"
.PATH: ${GCCDIR}/objc ${GCCDIR}
PROG= cc1obj
SRCS= main.c c-parser.c objc-act.c objc-lang.c c-decl.c
BINDIR= /usr/libexec
NO_MAN=
NO_SHARED?=yes
CFLAGS+= -I${GCCDIR}/objc -I.
OBJS+= ${PROG}-checksum.o
DPADD= ${LIBBACKEND} ${LIBCPP} ${LIBDECNUMBER} ${LIBIBERTY}
LDADD= ${LIBBACKEND} ${LIBCPP} ${LIBDECNUMBER} ${LIBIBERTY}
DOBJS+= ${SRCS:N*.h:R:S/$/.o/g}
${PROG}-dummy: ${DOBJS}
${CC} ${CFLAGS} ${LDFLAGS} -o ${.TARGET} ${DOBJS} ${LDADD}
CLEANFILES+= ${PROG}-dummy
${PROG}-checksum.c: ${PROG}-dummy
../cc_tools/genchecksum ${PROG}-dummy > ${.TARGET}
CLEANFILES+= ${PROG}-checksum.c
.include <bsd.prog.mk>

9
gnu/usr.bin/cc/cc_tools/Makefile
View File

@ -130,10 +130,6 @@ GTFILES_LANG_DIR_NAMES=
GTFILES_LANG_DIR_NAMES+= cp
.endif
.if ${MK_OBJC} != "no"
GTFILES_LANG_DIR_NAMES+= objc
.endif
# The list of language specific files for gengtype
.for L in ${GTFILES_LANG_DIR_NAMES} c
.if exists(${GCCDIR}/$L-config-lang.in)
@ -158,10 +154,6 @@ TREE_DEF_FILES=
TREE_DEF_FILES+= cp/cp-tree.def
.endif
.if ${MK_OBJC} != "no"
TREE_DEF_FILES+= objc/objc-tree.def
.endif
#
# Option files.
#
@ -342,7 +334,6 @@ GENSRCS+= configargs.h
# Language spec files
specs.h:
echo '#include "cp/lang-specs.h"' > ${.TARGET}
echo '#include "objc/lang-specs.h"' >> ${.TARGET}
GENSRCS+= specs.h

2
gnu/usr.bin/cc/doc/Makefile
View File

@ -14,7 +14,7 @@ INFOENTRY_gccint= "* gccint: (gccint). The GNU compiler family internal documen
INFOENTRY_cppinternals= "* cppinternals: (cppinternals). The GNU compiler preprocessor internal documentation."
gcc.info: gcc.texi gcc-common.texi gcc-vers.texi frontends.texi \
standards.texi invoke.texi extend.texi md.texi objc.texi \
standards.texi invoke.texi extend.texi md.texi \
gcov.texi trouble.texi bugreport.texi service.texi \
contribute.texi compat.texi funding.texi gnu.texi gpl.texi \
fdl.texi contrib.texi cppenv.texi cppopts.texi \

6
share/mk/bsd.dep.mk
View File

@ -128,11 +128,9 @@ depend: beforedepend ${DEPENDFILE} afterdepend
.if ${CC:T:Micc} == "icc"
MKDEP_CFLAGS= ${CFLAGS:M-X*} ${CFLAGS:M-[BIDU]*}
MKDEP_CXXFLAGS= ${CXXFLAGS:M-X*} ${CXXFLAGS:M-[BIDU]*}
MKDEP_OBJCFLAGS=${OBJCFLAGS:M-X*} ${OBJCFLAGS:M-[BIDU]*}
.else
MKDEP_CFLAGS= ${CFLAGS:M-nostdinc*} ${CFLAGS:M-[BIDU]*}
MKDEP_CXXFLAGS= ${CXXFLAGS:M-nostdinc*} ${CXXFLAGS:M-[BIDU]*}
MKDEP_OBJCFLAGS=${OBJCFLAGS:M-nostdinc*} ${OBJCFLAGS:M-[BIDU]*} ${OBJCFLAGS:M-Wno-import*}
.endif
DPSRCS+= ${SRCS}
@ -148,10 +146,6 @@ ${DEPENDFILE}: ${DPSRCS}
${MKDEP_CXXFLAGS} \
${.ALLSRC:M*.cc} ${.ALLSRC:M*.C} ${.ALLSRC:M*.cpp} ${.ALLSRC:M*.cxx}
.endif
.if !empty(DPSRCS:M*.m)
${MKDEPCMD} -f ${DEPENDFILE} -a ${MKDEP} \
${MKDEP_OBJCFLAGS} ${.ALLSRC:M*.m}
.endif
.if target(_EXTRADEPEND)
_EXTRADEPEND: .USE
${DEPENDFILE}: _EXTRADEPEND

14
share/mk/bsd.lib.mk
View File

@ -55,7 +55,7 @@ STRIP?= -s
# prefer .s to a .c, add .po, remove stuff not used in the BSD libraries
# .So used for PIC object files
.SUFFIXES:
.SUFFIXES: .out .o .po .So .S .asm .s .c .cc .cpp .cxx .m .C .f .y .l .ln
.SUFFIXES: .out .o .po .So .S .asm .s .c .cc .cpp .cxx .C .f .y .l .ln
.if !defined(PICFLAG)
.if ${MACHINE_CPUARCH} == "sparc64"
@ -101,18 +101,6 @@ PO_FLAG=-pg
(${ECHO} ${CTFCONVERT} ${CTFFLAGS} ${.TARGET} && \
${CTFCONVERT} ${CTFFLAGS} ${.TARGET})
.m.po:
${OBJC} ${OBJCFLAGS} -pg -c ${.IMPSRC} -o ${.TARGET}
@[ -z "${CTFCONVERT}" -o -n "${NO_CTF}" ] || \
(${ECHO} ${CTFCONVERT} ${CTFFLAGS} ${.TARGET} && \
${CTFCONVERT} ${CTFFLAGS} ${.TARGET})
.m.So:
${OBJC} ${PICFLAG} -DPIC ${OBJCFLAGS} -c ${.IMPSRC} -o ${.TARGET}
@[ -z "${CTFCONVERT}" -o -n "${NO_CTF}" ] || \
(${ECHO} ${CTFCONVERT} ${CTFFLAGS} ${.TARGET} && \
${CTFCONVERT} ${CTFFLAGS} ${.TARGET})
.s.po .s.So:
${AS} ${AFLAGS} -o ${.TARGET} ${.IMPSRC}
@[ -z "${CTFCONVERT}" -o -n "${NO_CTF}" ] || \

1
share/mk/bsd.libnames.mk
View File

@ -100,7 +100,6 @@ LIBNCURSESW?= ${DESTDIR}${LIBDIR}/libncursesw.a
LIBNETGRAPH?= ${DESTDIR}${LIBDIR}/libnetgraph.a
LIBNGATM?= ${DESTDIR}${LIBDIR}/libngatm.a
LIBNVPAIR?= ${DESTDIR}${LIBDIR}/libnvpair.a
LIBOBJC?= ${DESTDIR}${LIBDIR}/libobjc.a
LIBODIALOG?= ${DESTDIR}${LIBDIR}/libodialog.a
LIBOPIE?= ${DESTDIR}${LIBDIR}/libopie.a

2
share/mk/bsd.own.mk
View File

@ -248,7 +248,6 @@ WITHOUT_${var}=
NLS \
NLS_CATALOGS \
NS_CACHING \
OBJC \
OPENSSH \
OPENSSL \
PAM \
@ -356,7 +355,6 @@ __DEFAULT_YES_OPTIONS = \
NLS_CATALOGS \
NS_CACHING \
NTP \
OBJC \
OPENSSH \
OPENSSL \
PAM \

10
share/mk/bsd.prog.mk
View File

@ -48,16 +48,6 @@ PROG= ${PROG_CXX}
.if defined(PROG)
.if defined(SRCS)
# If there are Objective C sources, link with Objective C libraries.
.if !empty(SRCS:M*.m)
.if defined(OBJCLIBS)
LDADD+= ${OBJCLIBS}
.else
DPADD+= ${LIBOBJC} ${LIBPTHREAD}
LDADD+= -lobjc -lpthread
.endif
.endif
OBJS+= ${SRCS:N*.h:R:S/$/.o/g}
.if target(beforelinking)