226 lines
8.8 KiB
C
226 lines
8.8 KiB
C
/* Operating system specific defines to be used when targeting GCC for some
|
|
generic System V Release 4 system.
|
|
Copyright (C) 1991, 1994, 1995, 1996, 1997, 1998, 1999,
|
|
2000, 2001 Free Software Foundation, Inc.
|
|
Contributed by Ron Guilmette (rfg@monkeys.com).
|
|
|
|
This file is part of GNU CC.
|
|
|
|
GNU CC 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.
|
|
|
|
GNU CC 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 GNU CC; see the file COPYING. If not, write to
|
|
the Free Software Foundation, 59 Temple Place - Suite 330,
|
|
Boston, MA 02111-1307, USA.
|
|
|
|
To use this file, make up a line like that in config.gcc:
|
|
|
|
tm_file="$tm_file elfos.h svr4.h MACHINE/svr4.h"
|
|
|
|
where MACHINE is replaced by the name of the basic hardware that you
|
|
are targeting for. Then, in the file MACHINE/svr4.h, put any really
|
|
system-specific defines (or overrides of defines) which you find that
|
|
you need. For example, CPP_PREDEFINES is defined here with only the
|
|
defined -Dunix and -DSVR4. You should probably override that in your
|
|
target-specific MACHINE/svr4.h file with a set of defines that
|
|
includes these, but also contains an appropriate define for the type
|
|
of hardware that you are targeting.
|
|
*/
|
|
|
|
/* Define a symbol indicating that we are using svr4.h. */
|
|
#define USING_SVR4_H
|
|
|
|
/* Cpp, assembler, linker, library, and startfile spec's. */
|
|
|
|
/* This defines which switch letters take arguments. On svr4, most of
|
|
the normal cases (defined in gcc.c) apply, and we also have -h* and
|
|
-z* options (for the linker). Note however that there is no such
|
|
thing as a -T option for svr4. */
|
|
|
|
#define SWITCH_TAKES_ARG(CHAR) \
|
|
(DEFAULT_SWITCH_TAKES_ARG (CHAR) \
|
|
|| (CHAR) == 'h' \
|
|
|| (CHAR) == 'x' \
|
|
|| (CHAR) == 'z')
|
|
|
|
/* This defines which multi-letter switches take arguments. On svr4,
|
|
there are no such switches except those implemented by GCC itself. */
|
|
|
|
#define WORD_SWITCH_TAKES_ARG(STR) \
|
|
(DEFAULT_WORD_SWITCH_TAKES_ARG (STR) \
|
|
&& strcmp (STR, "Tdata") && strcmp (STR, "Ttext") \
|
|
&& strcmp (STR, "Tbss"))
|
|
|
|
/* You should redefine CPP_PREDEFINES in any file which includes this one.
|
|
The definition should be appropriate for the type of target system
|
|
involved, and it should include any -A (assertion) options which are
|
|
appropriate for the given target system. */
|
|
#undef CPP_PREDEFINES
|
|
|
|
/* Provide an ASM_SPEC appropriate for svr4. Here we try to support as
|
|
many of the specialized svr4 assembler options as seems reasonable,
|
|
given that there are certain options which we can't (or shouldn't)
|
|
support directly due to the fact that they conflict with other options
|
|
for other svr4 tools (e.g. ld) or with other options for GCC itself.
|
|
For example, we don't support the -o (output file) or -R (remove
|
|
input file) options because GCC already handles these things. We
|
|
also don't support the -m (run m4) option for the assembler because
|
|
that conflicts with the -m (produce load map) option of the svr4
|
|
linker. We do however allow passing arbitrary options to the svr4
|
|
assembler via the -Wa, option.
|
|
|
|
Note that gcc doesn't allow a space to follow -Y in a -Ym,* or -Yd,*
|
|
option.
|
|
*/
|
|
|
|
#undef ASM_SPEC
|
|
#define ASM_SPEC \
|
|
"%{v:-V} %{Qy:} %{!Qn:-Qy} %{n} %{T} %{Ym,*} %{Yd,*} %{Wa,*:%*}"
|
|
|
|
/* svr4 assemblers need the `-' (indicating input from stdin) to come after
|
|
the -o option (and its argument) for some reason. If we try to put it
|
|
before the -o option, the assembler will try to read the file named as
|
|
the output file in the -o option as an input file (after it has already
|
|
written some stuff to it) and the binary stuff contained therein will
|
|
cause totally confuse the assembler, resulting in many spurious error
|
|
messages. */
|
|
|
|
#undef ASM_FINAL_SPEC
|
|
#define ASM_FINAL_SPEC "%|"
|
|
|
|
/* Under svr4, the normal location of the `ld' and `as' programs is the
|
|
/usr/ccs/bin directory. */
|
|
|
|
#ifndef CROSS_COMPILE
|
|
#undef MD_EXEC_PREFIX
|
|
#define MD_EXEC_PREFIX "/usr/ccs/bin/"
|
|
#endif
|
|
|
|
/* Under svr4, the normal location of the various *crt*.o files is the
|
|
/usr/ccs/lib directory. */
|
|
|
|
#ifndef CROSS_COMPILE
|
|
#undef MD_STARTFILE_PREFIX
|
|
#define MD_STARTFILE_PREFIX "/usr/ccs/lib/"
|
|
#endif
|
|
|
|
/* Provide a LIB_SPEC appropriate for svr4. Here we tack on the default
|
|
standard C library (unless we are building a shared library). */
|
|
|
|
#undef LIB_SPEC
|
|
#define LIB_SPEC "%{!shared:%{!symbolic:-lc}}"
|
|
|
|
/* Provide an ENDFILE_SPEC appropriate for svr4. Here we tack on our own
|
|
magical crtend.o file (see crtstuff.c) which provides part of the
|
|
support for getting C++ file-scope static object constructed before
|
|
entering `main', followed by the normal svr3/svr4 "finalizer" file,
|
|
which is either `gcrtn.o' or `crtn.o'. */
|
|
|
|
#undef ENDFILE_SPEC
|
|
#define ENDFILE_SPEC "crtend.o%s %{pg:gcrtn.o%s}%{!pg:crtn.o%s}"
|
|
|
|
/* Provide a LINK_SPEC appropriate for svr4. Here we provide support
|
|
for the special GCC options -static, -shared, and -symbolic which
|
|
allow us to link things in one of these three modes by applying the
|
|
appropriate combinations of options at link-time. We also provide
|
|
support here for as many of the other svr4 linker options as seems
|
|
reasonable, given that some of them conflict with options for other
|
|
svr4 tools (e.g. the assembler). In particular, we do support the
|
|
-z*, -V, -b, -t, -Qy, -Qn, and -YP* options here, and the -e*, -l*,
|
|
-o*, -r, -s, -u*, and -L* options are directly supported by gcc.c
|
|
itself. We don't directly support the -m (generate load map)
|
|
option because that conflicts with the -m (run m4) option of the
|
|
svr4 assembler. We also don't directly support the svr4 linker's
|
|
-I* or -M* options because these conflict with existing GCC
|
|
options. We do however allow passing arbitrary options to the svr4
|
|
linker via the -Wl, option, in gcc.c. We don't support the svr4
|
|
linker's -a option at all because it is totally useless and because
|
|
it conflicts with GCC's own -a option.
|
|
|
|
Note that gcc doesn't allow a space to follow -Y in a -YP,* option.
|
|
|
|
When the -G link option is used (-shared and -symbolic) a final link is
|
|
not being done. */
|
|
|
|
#undef LINK_SPEC
|
|
#ifdef CROSS_COMPILE
|
|
#define LINK_SPEC "%{h*} %{v:-V} \
|
|
%{b} \
|
|
%{static:-dn -Bstatic} \
|
|
%{shared:-G -dy -z text} \
|
|
%{symbolic:-Bsymbolic -G -dy -z text} \
|
|
%{G:-G} \
|
|
%{YP,*} \
|
|
%{Qy:} %{!Qn:-Qy}"
|
|
#else
|
|
#define LINK_SPEC "%{h*} %{v:-V} \
|
|
%{b} \
|
|
%{static:-dn -Bstatic} \
|
|
%{shared:-G -dy -z text} \
|
|
%{symbolic:-Bsymbolic -G -dy -z text} \
|
|
%{G:-G} \
|
|
%{YP,*} \
|
|
%{!YP,*:%{p:-Y P,/usr/ccs/lib/libp:/usr/lib/libp:/usr/ccs/lib:/usr/lib} \
|
|
%{!p:-Y P,/usr/ccs/lib:/usr/lib}} \
|
|
%{Qy:} %{!Qn:-Qy}"
|
|
#endif
|
|
|
|
/* Gcc automatically adds in one of the files /usr/ccs/lib/values-Xc.o
|
|
or /usr/ccs/lib/values-Xa.o for each final link step (depending
|
|
upon the other gcc options selected, such as -ansi). These files
|
|
each contain one (initialized) copy of a special variable called
|
|
`_lib_version'. Each one of these files has `_lib_version' initialized
|
|
to a different (enum) value. The SVR4 library routines query the
|
|
value of `_lib_version' at run to decide how they should behave.
|
|
Specifically, they decide (based upon the value of `_lib_version')
|
|
if they will act in a strictly ANSI conforming manner or not. */
|
|
|
|
#undef STARTFILE_SPEC
|
|
#define STARTFILE_SPEC "%{!shared: \
|
|
%{!symbolic: \
|
|
%{pg:gcrt1.o%s}%{!pg:%{p:mcrt1.o%s}%{!p:crt1.o%s}}}}\
|
|
%{pg:gcrti.o%s}%{!pg:crti.o%s} \
|
|
%{ansi:values-Xc.o%s} \
|
|
%{!ansi:values-Xa.o%s} \
|
|
crtbegin.o%s"
|
|
|
|
/* The numbers used to denote specific machine registers in the System V
|
|
Release 4 DWARF debugging information are quite likely to be totally
|
|
different from the numbers used in BSD stabs debugging information
|
|
for the same kind of target machine. Thus, we undefine the macro
|
|
DBX_REGISTER_NUMBER here as an extra inducement to get people to
|
|
provide proper machine-specific definitions of DBX_REGISTER_NUMBER
|
|
(which is also used to provide DWARF registers numbers in dwarfout.c)
|
|
in their tm.h files which include this file. */
|
|
|
|
#undef DBX_REGISTER_NUMBER
|
|
|
|
/* Define the actual types of some ANSI-mandated types. (These
|
|
definitions should work for most SVR4 systems). */
|
|
|
|
#undef SIZE_TYPE
|
|
#define SIZE_TYPE "unsigned int"
|
|
|
|
#undef PTRDIFF_TYPE
|
|
#define PTRDIFF_TYPE "int"
|
|
|
|
#undef WCHAR_TYPE
|
|
#define WCHAR_TYPE "long int"
|
|
|
|
#undef WCHAR_TYPE_SIZE
|
|
#define WCHAR_TYPE_SIZE BITS_PER_WORD
|
|
|
|
/* This causes trouble, because it requires the host machine
|
|
to support ANSI C. */
|
|
/* #define MULTIBYTE_CHARS */
|
|
|
|
#define TARGET_HAS_F_SETLKW
|