838 lines
31 KiB
C
838 lines
31 KiB
C
/* Target definitions for Darwin (Mac OS X) systems.
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Copyright (C) 1989, 1990, 1991, 1992, 1993, 2000, 2001, 2002, 2003
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Free Software Foundation, Inc.
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Contributed by Apple Computer Inc.
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This file is part of GCC.
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GCC is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2, or (at your option)
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any later version.
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GCC is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with GCC; see the file COPYING. If not, write to
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the Free Software Foundation, 59 Temple Place - Suite 330,
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Boston, MA 02111-1307, USA. */
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/* The definitions in this file are common to all processor types
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running Darwin, which is the kernel for Mac OS X. Darwin is
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basically a BSD user layer laid over a Mach kernel, then evolved
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for many years (at NeXT) in parallel with other Unix systems. So
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while the runtime is a somewhat idiosyncratic Mach-based thing,
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other definitions look like they would for a BSD variant. */
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/* Although NeXT ran on many different architectures, as of Jan 2001
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the only supported Darwin targets are PowerPC and x86. */
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/* Technically, STANDARD_EXEC_PREFIX should be /usr/libexec/, but in
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practice this makes it hard to install new compilers elsewhere, so
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leave it undefined and expect system builders to set configure args
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correctly. */
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/* One of Darwin's NeXT legacies is the Mach-O format, which is partly
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like a.out and partly like COFF, with additional features like
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multi-architecture binary support. */
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#define OBJECT_FORMAT_MACHO
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/* Suppress g++ attempt to link in the math library automatically.
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(Some Darwin versions have a libm, but they seem to cause problems
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for C++ executables.) */
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#define MATH_LIBRARY ""
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/* We have atexit. */
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#define HAVE_ATEXIT
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/* Define an empty body for the function do_global_dtors() in libgcc2.c. */
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#define DO_GLOBAL_DTORS_BODY
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/* The string value for __SIZE_TYPE__. */
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#ifndef SIZE_TYPE
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#define SIZE_TYPE "long unsigned int"
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#endif
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/* Type used for ptrdiff_t, as a string used in a declaration. */
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#undef PTRDIFF_TYPE
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#define PTRDIFF_TYPE "int"
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/* wchar_t is int. */
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#undef WCHAR_TYPE
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#define WCHAR_TYPE "int"
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#undef WCHAR_TYPE_SIZE
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#define WCHAR_TYPE_SIZE 32
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/* Default to using the NeXT-style runtime, since that's what is
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pre-installed on Darwin systems. */
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#define NEXT_OBJC_RUNTIME
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/* Don't default to pcc-struct-return, because gcc is the only compiler, and
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we want to retain compatibility with older gcc versions. */
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#undef DEFAULT_PCC_STRUCT_RETURN
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#define DEFAULT_PCC_STRUCT_RETURN 0
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/* This table intercepts weirdo options whose names would interfere
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with normal driver conventions, and either translates them into
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standardly-named options, or adds a 'Z' so that they can get to
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specs processing without interference.
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Do not expand a linker option to "-Xlinker -<option>", since that
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forfeits the ability to control via spec strings later. However,
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as a special exception, do this translation with -filelist, because
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otherwise the driver will think there are no input files and quit.
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(The alternative would be to hack the driver to recognize -filelist
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specially, but it's simpler to use the translation table.)
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Note that an option name with a prefix that matches another option
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name, that also takes an argument, needs to be modified so the
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prefix is different, otherwise a '*' after the shorter option will
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match with the longer one.
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The SUBTARGET_OPTION_TRANSLATE_TABLE macro, which _must_ be defined
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in gcc/config/{i386,rs6000}/darwin.h, should contain any additional
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command-line option translations specific to the particular target
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architecture. */
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#define TARGET_OPTION_TRANSLATE_TABLE \
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{ "-all_load", "-Zall_load" }, \
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{ "-allowable_client", "-Zallowable_client" }, \
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{ "-arch_errors_fatal", "-Zarch_errors_fatal" }, \
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{ "-bind_at_load", "-Zbind_at_load" }, \
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{ "-bundle", "-Zbundle" }, \
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{ "-bundle_loader", "-Zbundle_loader" }, \
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{ "-weak_reference_mismatches", "-Zweak_reference_mismatches" }, \
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{ "-dependency-file", "-MF" }, \
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{ "-dylib_file", "-Zdylib_file" }, \
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{ "-dynamic", "-Zdynamic" }, \
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{ "-dynamiclib", "-Zdynamiclib" }, \
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{ "-exported_symbols_list", "-Zexported_symbols_list" }, \
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{ "-seg_addr_table_filename", "-Zseg_addr_table_filename" }, \
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{ "-filelist", "-Xlinker -filelist -Xlinker" }, \
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{ "-flat_namespace", "-Zflat_namespace" }, \
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{ "-force_cpusubtype_ALL", "-Zforce_cpusubtype_ALL" }, \
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{ "-force_flat_namespace", "-Zforce_flat_namespace" }, \
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{ "-image_base", "-Zimage_base" }, \
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{ "-init", "-Zinit" }, \
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{ "-install_name", "-Zinstall_name" }, \
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{ "-multiply_defined_unused", "-Zmultiplydefinedunused" }, \
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{ "-multiply_defined", "-Zmultiply_defined" }, \
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{ "-multi_module", "-Zmulti_module" }, \
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{ "-static", "-static -Wa,-static" }, \
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{ "-single_module", "-Zsingle_module" }, \
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{ "-unexported_symbols_list", "-Zunexported_symbols_list" }, \
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SUBTARGET_OPTION_TRANSLATE_TABLE
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/* These compiler options take n arguments. */
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#undef WORD_SWITCH_TAKES_ARG
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#define WORD_SWITCH_TAKES_ARG(STR) \
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(DEFAULT_WORD_SWITCH_TAKES_ARG (STR) ? 1 : \
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!strcmp (STR, "Zallowable_client") ? 1 : \
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!strcmp (STR, "arch") ? 1 : \
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!strcmp (STR, "arch_only") ? 1 : \
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!strcmp (STR, "Zbundle_loader") ? 1 : \
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!strcmp (STR, "client_name") ? 1 : \
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!strcmp (STR, "compatibility_version") ? 1 : \
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!strcmp (STR, "current_version") ? 1 : \
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!strcmp (STR, "Zdylib_file") ? 1 : \
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!strcmp (STR, "Zexported_symbols_list") ? 1 : \
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!strcmp (STR, "Zimage_base") ? 1 : \
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!strcmp (STR, "Zinit") ? 1 : \
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!strcmp (STR, "Zinstall_name") ? 1 : \
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!strcmp (STR, "Zmultiplydefinedunused") ? 1 : \
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!strcmp (STR, "Zmultiply_defined") ? 1 : \
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!strcmp (STR, "precomp-trustfile") ? 1 : \
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!strcmp (STR, "read_only_relocs") ? 1 : \
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!strcmp (STR, "sectcreate") ? 3 : \
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!strcmp (STR, "sectorder") ? 3 : \
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!strcmp (STR, "Zseg_addr_table_filename") ?1 :\
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!strcmp (STR, "seg1addr") ? 1 : \
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!strcmp (STR, "segprot") ? 3 : \
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!strcmp (STR, "seg_addr_table") ? 1 : \
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!strcmp (STR, "sub_library") ? 1 : \
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!strcmp (STR, "sub_umbrella") ? 1 : \
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!strcmp (STR, "umbrella") ? 1 : \
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!strcmp (STR, "undefined") ? 1 : \
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!strcmp (STR, "Zunexported_symbols_list") ? 1 : \
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!strcmp (STR, "Zweak_reference_mismatches") ? 1 : \
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!strcmp (STR, "pagezero_size") ? 1 : \
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!strcmp (STR, "segs_read_only_addr") ? 1 : \
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!strcmp (STR, "segs_read_write_addr") ? 1 : \
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!strcmp (STR, "sectalign") ? 3 : \
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!strcmp (STR, "sectobjectsymbols") ? 2 : \
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!strcmp (STR, "segcreate") ? 3 : \
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!strcmp (STR, "dylinker_install_name") ? 1 : \
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0)
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/* Machine dependent cpp options. */
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#undef CPP_SPEC
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#define CPP_SPEC "%{static:%{!dynamic:-D__STATIC__}}%{!static:-D__DYNAMIC__}"
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/* This is mostly a clone of the standard LINK_COMMAND_SPEC, plus
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precomp, libtool, and fat build additions. Also we
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don't specify a second %G after %L because libSystem is
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self-contained and doesn't need to link against libgcc.a. */
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/* In general, random Darwin linker flags should go into LINK_SPEC
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instead of LINK_COMMAND_SPEC. The command spec is better for
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specifying the handling of options understood by generic Unix
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linkers, and for positional arguments like libraries. */
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#define LINK_COMMAND_SPEC "\
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%{!fdump=*:%{!fsyntax-only:%{!precomp:%{!c:%{!M:%{!MM:%{!E:%{!S:\
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%{!Zdynamiclib:%(linker)}%{Zdynamiclib:/usr/bin/libtool} \
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%{!Zdynamiclib:-arch %(darwin_arch)} \
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%{Zdynamiclib:-arch_only %(darwin_arch)} \
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%l %X %{d} %{s} %{t} %{Z} \
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%{!Zdynamiclib:%{A} %{e*} %{m} %{N} %{n} %{r} %{u*} %{x} %{z}} \
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%{@:-o %f%u.out}%{!@:%{o*}%{!o:-o a.out}} \
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%{!Zdynamiclib:%{!A:%{!nostdlib:%{!nostartfiles:%S}}}} \
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%{L*} %(link_libgcc) %o %{fprofile-arcs|fprofile-generate:-lgcov} \
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%{!nostdlib:%{!nodefaultlibs:%G %L}} \
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%{!A:%{!nostdlib:%{!nostartfiles:%E}}} %{T*} %{F*} \
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%{!--help:%{!no-c++filt|c++filt:| c++filt }} }}}}}}}}"
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/* Please keep the random linker options in alphabetical order (modulo
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'Z' and 'no' prefixes). Options that can only go to one of libtool
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or ld must be listed twice, under both !Zdynamiclib and
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Zdynamiclib, with one of the cases reporting an error. */
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/* Note that options taking arguments may appear multiple times on a
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command line with different arguments each time, so put a * after
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their names so all of them get passed. */
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#define LINK_SPEC \
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"%{static}%{!static:-dynamic} \
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%{!Zdynamiclib: \
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%{Zbundle:-bundle} \
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%{Zbundle_loader*:-bundle_loader %*} \
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%{client_name*} \
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%{compatibility_version*:%e-compatibility_version only allowed with -dynamiclib\
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} \
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%{current_version*:%e-current_version only allowed with -dynamiclib} \
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%{Zforce_cpusubtype_ALL:-force_cpusubtype_ALL} \
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%{Zforce_flat_namespace:-force_flat_namespace} \
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%{Zinstall_name*:%e-install_name only allowed with -dynamiclib} \
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%{keep_private_externs} \
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%{private_bundle} \
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} \
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%{Zdynamiclib: \
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%{Zbundle:%e-bundle not allowed with -dynamiclib} \
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%{Zbundle_loader*:%e-bundle_loader not allowed with -dynamiclib} \
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%{client_name*:%e-client_name not allowed with -dynamiclib} \
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%{compatibility_version*} \
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%{current_version*} \
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%{Zforce_cpusubtype_ALL:%e-force_cpusubtype_ALL not allowed with -dynamiclib} \
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%{Zforce_flat_namespace:%e-force_flat_namespace not allowed with -dynamiclib} \
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%{Zinstall_name*:-install_name %*} \
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%{keep_private_externs:%e-keep_private_externs not allowed with -dynamiclib} \
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%{private_bundle:%e-private_bundle not allowed with -dynamiclib} \
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} \
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%{Zall_load:-all_load}%{Zdynamiclib:%{!Zall_load:-noall_load}} \
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%{Zallowable_client*:-allowable_client %*} \
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%{Zbind_at_load:-bind_at_load} \
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%{Zarch_errors_fatal:-arch_errors_fatal} \
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%{Zdylib_file*:-dylib_file %*} \
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%{Zdynamic:-dynamic}\
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%{Zexported_symbols_list*:-exported_symbols_list %*} \
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%{Zflat_namespace:-flat_namespace} \
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%{headerpad_max_install_names*} \
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%{Zimage_base*:-image_base %*} \
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%{Zinit*:-init %*} \
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%{nomultidefs} \
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%{Zmulti_module:-multi_module} %{Zsingle_module:-single_module} \
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%{Zmultiply_defined*:-multiply_defined %*} \
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%{Zmultiplydefinedunused*:-multiply_defined_unused %*} \
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%{prebind} %{noprebind} %{nofixprebinding} %{prebind_all_twolevel_modules} \
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%{read_only_relocs} \
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%{sectcreate*} %{sectorder*} %{seg1addr*} %{segprot*} %{seg_addr_table*} \
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%{Zseg_addr_table_filename*:-seg_addr_table_filename %*} \
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%{sub_library*} %{sub_umbrella*} \
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%{twolevel_namespace} %{twolevel_namespace_hints} \
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%{umbrella*} \
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%{undefined*} \
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%{Zunexported_symbols_list*:-unexported_symbols_list %*} \
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%{Zweak_reference_mismatches*:-weak_reference_mismatches %*} \
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%{X} \
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%{y*} \
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%{w} \
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%{pagezero_size*} %{segs_read_*} %{seglinkedit} %{noseglinkedit} \
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%{sectalign*} %{sectobjectsymbols*} %{segcreate*} %{whyload} \
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%{whatsloaded} %{dylinker_install_name*} \
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%{dylinker} %{Mach} "
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/* Machine dependent libraries. */
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#undef LIB_SPEC
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#define LIB_SPEC "%{!static:-lSystem}"
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/* We specify crt0.o as -lcrt0.o so that ld will search the library path. */
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#undef STARTFILE_SPEC
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#define STARTFILE_SPEC \
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"%{!Zdynamiclib:%{Zbundle:%{!static:-lbundle1.o}} \
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%{!Zbundle:%{pg:%{static:-lgcrt0.o} \
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%{!static:%{object:-lgcrt0.o} \
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%{!object:%{preload:-lgcrt0.o} \
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%{!preload:-lgcrt1.o -lcrt2.o}}}} \
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%{!pg:%{static:-lcrt0.o} \
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%{!static:%{object:-lcrt0.o} \
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%{!object:%{preload:-lcrt0.o} \
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%{!preload:-lcrt1.o -lcrt2.o}}}}}}"
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/* The native Darwin linker doesn't necessarily place files in the order
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that they're specified on the link line. Thus, it is pointless
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to put anything in ENDFILE_SPEC. */
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/* #define ENDFILE_SPEC "" */
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/* We use Dbx symbol format. */
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#define DBX_DEBUGGING_INFO 1
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/* When generating stabs debugging, use N_BINCL entries. */
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#define DBX_USE_BINCL
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/* There is no limit to the length of stabs strings. */
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#define DBX_CONTIN_LENGTH 0
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/* gdb needs a null N_SO at the end of each file for scattered loading. */
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#undef DBX_OUTPUT_MAIN_SOURCE_FILE_END
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#define DBX_OUTPUT_MAIN_SOURCE_FILE_END(FILE, FILENAME) \
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do { text_section (); \
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fprintf (FILE, \
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"\t.stabs \"%s\",%d,0,0,Letext\nLetext:\n", "" , N_SO); \
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} while (0)
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/* Our profiling scheme doesn't LP labels and counter words. */
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#define NO_PROFILE_COUNTERS 1
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#undef INIT_SECTION_ASM_OP
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#define INIT_SECTION_ASM_OP
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#undef INVOKE__main
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#define TARGET_ASM_CONSTRUCTOR machopic_asm_out_constructor
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#define TARGET_ASM_DESTRUCTOR machopic_asm_out_destructor
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/* Always prefix with an underscore. */
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#define USER_LABEL_PREFIX "_"
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/* Don't output a .file directive. That is only used by the assembler for
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error reporting. */
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#undef TARGET_ASM_FILE_START_FILE_DIRECTIVE
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#define TARGET_ASM_FILE_START_FILE_DIRECTIVE false
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#undef TARGET_ASM_FILE_END
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#define TARGET_ASM_FILE_END darwin_file_end
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#define ASM_OUTPUT_SKIP(FILE,SIZE) \
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fprintf (FILE, "\t.space "HOST_WIDE_INT_PRINT_UNSIGNED"\n", SIZE)
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/* Give ObjC methods pretty symbol names. */
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#undef OBJC_GEN_METHOD_LABEL
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#define OBJC_GEN_METHOD_LABEL(BUF,IS_INST,CLASS_NAME,CAT_NAME,SEL_NAME,NUM) \
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do { if (CAT_NAME) \
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sprintf (BUF, "%c[%s(%s) %s]", (IS_INST) ? '-' : '+', \
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(CLASS_NAME), (CAT_NAME), (SEL_NAME)); \
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else \
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sprintf (BUF, "%c[%s %s]", (IS_INST) ? '-' : '+', \
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(CLASS_NAME), (SEL_NAME)); \
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} while (0)
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/* The RTTI data (e.g., __ti4name) is common and public (and static),
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but it does need to be referenced via indirect PIC data pointers.
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The machopic_define_name calls are telling the machopic subsystem
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that the name *is* defined in this module, so it doesn't need to
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make them indirect. */
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#undef ASM_DECLARE_OBJECT_NAME
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#define ASM_DECLARE_OBJECT_NAME(FILE, NAME, DECL) \
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do { \
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const char *xname = NAME; \
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if (GET_CODE (XEXP (DECL_RTL (DECL), 0)) != SYMBOL_REF) \
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xname = IDENTIFIER_POINTER (DECL_NAME (DECL)); \
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if ((TREE_STATIC (DECL) \
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&& (!DECL_COMMON (DECL) || !TREE_PUBLIC (DECL))) \
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|| DECL_INITIAL (DECL)) \
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machopic_define_name (xname); \
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if ((TREE_STATIC (DECL) \
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&& (!DECL_COMMON (DECL) || !TREE_PUBLIC (DECL))) \
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|| DECL_INITIAL (DECL)) \
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(* targetm.encode_section_info) (DECL, DECL_RTL (DECL), false); \
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ASM_OUTPUT_LABEL (FILE, xname); \
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/* Darwin doesn't support zero-size objects, so give them a \
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byte. */ \
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if (tree_low_cst (DECL_SIZE_UNIT (DECL), 1) == 0) \
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assemble_zeros (1); \
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} while (0)
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#define ASM_DECLARE_FUNCTION_NAME(FILE, NAME, DECL) \
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do { \
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const char *xname = NAME; \
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if (GET_CODE (XEXP (DECL_RTL (DECL), 0)) != SYMBOL_REF) \
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xname = IDENTIFIER_POINTER (DECL_NAME (DECL)); \
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if ((TREE_STATIC (DECL) \
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&& (!DECL_COMMON (DECL) || !TREE_PUBLIC (DECL))) \
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|| DECL_INITIAL (DECL)) \
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machopic_define_name (xname); \
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if ((TREE_STATIC (DECL) \
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&& (!DECL_COMMON (DECL) || !TREE_PUBLIC (DECL))) \
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|| DECL_INITIAL (DECL)) \
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(* targetm.encode_section_info) (DECL, DECL_RTL (DECL), false); \
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ASM_OUTPUT_LABEL (FILE, xname); \
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} while (0)
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#define ASM_DECLARE_CONSTANT_NAME(FILE, NAME, EXP, SIZE) \
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do { \
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ASM_OUTPUT_LABEL (FILE, NAME); \
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/* Darwin doesn't support zero-size objects, so give them a \
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byte. */ \
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if ((SIZE) == 0) \
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assemble_zeros (1); \
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} while (0)
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/* Wrap new method names in quotes so the assembler doesn't gag.
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Make Objective-C internal symbols local. */
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#undef ASM_OUTPUT_LABELREF
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#define ASM_OUTPUT_LABELREF(FILE,NAME) \
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do { \
|
|
const char *xname = darwin_strip_name_encoding (NAME); \
|
|
if (! strcmp (xname, "<pic base>")) \
|
|
machopic_output_function_base_name(FILE); \
|
|
else if (xname[0] == '&' || xname[0] == '*') \
|
|
{ \
|
|
int len = strlen (xname); \
|
|
if (len > 6 && !strcmp ("$stub", xname + len - 5)) \
|
|
machopic_validate_stub_or_non_lazy_ptr (xname, 1); \
|
|
else if (len > 7 && !strcmp ("$stub\"", xname + len - 6)) \
|
|
machopic_validate_stub_or_non_lazy_ptr (xname, 1); \
|
|
else if (len > 14 && !strcmp ("$non_lazy_ptr", xname + len - 13)) \
|
|
machopic_validate_stub_or_non_lazy_ptr (xname, 0); \
|
|
fputs (&xname[1], FILE); \
|
|
} \
|
|
else if (xname[0] == '+' || xname[0] == '-') \
|
|
fprintf (FILE, "\"%s\"", xname); \
|
|
else if (!strncmp (xname, "_OBJC_", 6)) \
|
|
fprintf (FILE, "L%s", xname); \
|
|
else if (!strncmp (xname, ".objc_class_name_", 17)) \
|
|
fprintf (FILE, "%s", xname); \
|
|
else \
|
|
fprintf (FILE, "_%s", xname); \
|
|
} while (0)
|
|
|
|
/* Output before executable code. */
|
|
#undef TEXT_SECTION_ASM_OP
|
|
#define TEXT_SECTION_ASM_OP ".text"
|
|
|
|
/* Output before writable data. */
|
|
|
|
#undef DATA_SECTION_ASM_OP
|
|
#define DATA_SECTION_ASM_OP ".data"
|
|
|
|
#undef ALIGN_ASM_OP
|
|
#define ALIGN_ASM_OP ".align"
|
|
|
|
#undef ASM_OUTPUT_ALIGN
|
|
#define ASM_OUTPUT_ALIGN(FILE,LOG) \
|
|
if ((LOG) != 0) \
|
|
fprintf (FILE, "\t%s %d\n", ALIGN_ASM_OP, (LOG))
|
|
|
|
/* Ensure correct alignment of bss data. */
|
|
|
|
#undef ASM_OUTPUT_ALIGNED_DECL_LOCAL
|
|
#define ASM_OUTPUT_ALIGNED_DECL_LOCAL(FILE, DECL, NAME, SIZE, ALIGN) \
|
|
do { \
|
|
fputs (".lcomm ", (FILE)); \
|
|
assemble_name ((FILE), (NAME)); \
|
|
fprintf ((FILE), ","HOST_WIDE_INT_PRINT_UNSIGNED",%u\n", (SIZE), \
|
|
floor_log2 ((ALIGN) / BITS_PER_UNIT)); \
|
|
if ((DECL) && ((TREE_STATIC (DECL) \
|
|
&& (!DECL_COMMON (DECL) || !TREE_PUBLIC (DECL))) \
|
|
|| DECL_INITIAL (DECL))) \
|
|
(* targetm.encode_section_info) (DECL, DECL_RTL (DECL), false); \
|
|
if ((DECL) && ((TREE_STATIC (DECL) \
|
|
&& (!DECL_COMMON (DECL) || !TREE_PUBLIC (DECL))) \
|
|
|| DECL_INITIAL (DECL))) \
|
|
machopic_define_name (NAME); \
|
|
} while (0)
|
|
|
|
/* The maximum alignment which the object file format can support.
|
|
For Mach-O, this is 2^15. */
|
|
|
|
#undef MAX_OFILE_ALIGNMENT
|
|
#define MAX_OFILE_ALIGNMENT 0x8000
|
|
|
|
/* Create new Mach-O sections. */
|
|
|
|
#undef SECTION_FUNCTION
|
|
#define SECTION_FUNCTION(FUNCTION, SECTION, DIRECTIVE, OBJC) \
|
|
extern void FUNCTION (void); \
|
|
void \
|
|
FUNCTION (void) \
|
|
{ \
|
|
if (in_section != SECTION) \
|
|
{ \
|
|
if (OBJC) \
|
|
objc_section_init (); \
|
|
data_section (); \
|
|
if (asm_out_file) \
|
|
fprintf (asm_out_file, "%s\n", DIRECTIVE); \
|
|
in_section = SECTION; \
|
|
} \
|
|
} \
|
|
|
|
/* Darwin uses many types of special sections. */
|
|
|
|
#undef EXTRA_SECTIONS
|
|
#define EXTRA_SECTIONS \
|
|
in_const, in_const_data, in_cstring, in_literal4, in_literal8, \
|
|
in_constructor, in_destructor, in_mod_init, in_mod_term, \
|
|
in_objc_class, in_objc_meta_class, in_objc_category, \
|
|
in_objc_class_vars, in_objc_instance_vars, \
|
|
in_objc_cls_meth, in_objc_inst_meth, \
|
|
in_objc_cat_cls_meth, in_objc_cat_inst_meth, \
|
|
in_objc_selector_refs, \
|
|
in_objc_selector_fixup, \
|
|
in_objc_symbols, in_objc_module_info, \
|
|
in_objc_protocol, in_objc_string_object, \
|
|
in_objc_constant_string_object, \
|
|
in_objc_image_info, \
|
|
in_objc_class_names, in_objc_meth_var_names, \
|
|
in_objc_meth_var_types, in_objc_cls_refs, \
|
|
in_machopic_nl_symbol_ptr, \
|
|
in_machopic_lazy_symbol_ptr, \
|
|
in_machopic_symbol_stub, \
|
|
in_machopic_symbol_stub1, \
|
|
in_machopic_picsymbol_stub, \
|
|
in_machopic_picsymbol_stub1, \
|
|
in_darwin_exception, in_darwin_eh_frame, \
|
|
num_sections
|
|
|
|
#undef EXTRA_SECTION_FUNCTIONS
|
|
#define EXTRA_SECTION_FUNCTIONS \
|
|
static void objc_section_init (void); \
|
|
SECTION_FUNCTION (const_section, \
|
|
in_const, \
|
|
".const", 0) \
|
|
SECTION_FUNCTION (const_data_section, \
|
|
in_const_data, \
|
|
".const_data", 0) \
|
|
SECTION_FUNCTION (cstring_section, \
|
|
in_cstring, \
|
|
".cstring", 0) \
|
|
SECTION_FUNCTION (literal4_section, \
|
|
in_literal4, \
|
|
".literal4", 0) \
|
|
SECTION_FUNCTION (literal8_section, \
|
|
in_literal8, \
|
|
".literal8", 0) \
|
|
SECTION_FUNCTION (constructor_section, \
|
|
in_constructor, \
|
|
".constructor", 0) \
|
|
SECTION_FUNCTION (mod_init_section, \
|
|
in_mod_init, \
|
|
".mod_init_func", 0) \
|
|
SECTION_FUNCTION (mod_term_section, \
|
|
in_mod_term, \
|
|
".mod_term_func", 0) \
|
|
SECTION_FUNCTION (destructor_section, \
|
|
in_destructor, \
|
|
".destructor", 0) \
|
|
SECTION_FUNCTION (objc_class_section, \
|
|
in_objc_class, \
|
|
".objc_class", 1) \
|
|
SECTION_FUNCTION (objc_meta_class_section, \
|
|
in_objc_meta_class, \
|
|
".objc_meta_class", 1) \
|
|
SECTION_FUNCTION (objc_category_section, \
|
|
in_objc_category, \
|
|
".objc_category", 1) \
|
|
SECTION_FUNCTION (objc_class_vars_section, \
|
|
in_objc_class_vars, \
|
|
".objc_class_vars", 1) \
|
|
SECTION_FUNCTION (objc_instance_vars_section, \
|
|
in_objc_instance_vars, \
|
|
".objc_instance_vars", 1) \
|
|
SECTION_FUNCTION (objc_cls_meth_section, \
|
|
in_objc_cls_meth, \
|
|
".objc_cls_meth", 1) \
|
|
SECTION_FUNCTION (objc_inst_meth_section, \
|
|
in_objc_inst_meth, \
|
|
".objc_inst_meth", 1) \
|
|
SECTION_FUNCTION (objc_cat_cls_meth_section, \
|
|
in_objc_cat_cls_meth, \
|
|
".objc_cat_cls_meth", 1) \
|
|
SECTION_FUNCTION (objc_cat_inst_meth_section, \
|
|
in_objc_cat_inst_meth, \
|
|
".objc_cat_inst_meth", 1) \
|
|
SECTION_FUNCTION (objc_selector_refs_section, \
|
|
in_objc_selector_refs, \
|
|
".objc_message_refs", 1) \
|
|
SECTION_FUNCTION (objc_selector_fixup_section, \
|
|
in_objc_selector_fixup, \
|
|
".section __OBJC, __sel_fixup", 1) \
|
|
SECTION_FUNCTION (objc_symbols_section, \
|
|
in_objc_symbols, \
|
|
".objc_symbols", 1) \
|
|
SECTION_FUNCTION (objc_module_info_section, \
|
|
in_objc_module_info, \
|
|
".objc_module_info", 1) \
|
|
SECTION_FUNCTION (objc_protocol_section, \
|
|
in_objc_protocol, \
|
|
".objc_protocol", 1) \
|
|
SECTION_FUNCTION (objc_string_object_section, \
|
|
in_objc_string_object, \
|
|
".objc_string_object", 1) \
|
|
SECTION_FUNCTION (objc_constant_string_object_section, \
|
|
in_objc_constant_string_object, \
|
|
".section __OBJC, __cstring_object", 1) \
|
|
/* Fix-and-Continue image marker. */ \
|
|
SECTION_FUNCTION (objc_image_info_section, \
|
|
in_objc_image_info, \
|
|
".section __OBJC, __image_info", 1) \
|
|
SECTION_FUNCTION (objc_class_names_section, \
|
|
in_objc_class_names, \
|
|
".objc_class_names", 1) \
|
|
SECTION_FUNCTION (objc_meth_var_names_section, \
|
|
in_objc_meth_var_names, \
|
|
".objc_meth_var_names", 1) \
|
|
SECTION_FUNCTION (objc_meth_var_types_section, \
|
|
in_objc_meth_var_types, \
|
|
".objc_meth_var_types", 1) \
|
|
SECTION_FUNCTION (objc_cls_refs_section, \
|
|
in_objc_cls_refs, \
|
|
".objc_cls_refs", 1) \
|
|
\
|
|
SECTION_FUNCTION (machopic_lazy_symbol_ptr_section, \
|
|
in_machopic_lazy_symbol_ptr, \
|
|
".lazy_symbol_pointer", 0) \
|
|
SECTION_FUNCTION (machopic_nl_symbol_ptr_section, \
|
|
in_machopic_nl_symbol_ptr, \
|
|
".non_lazy_symbol_pointer", 0) \
|
|
SECTION_FUNCTION (machopic_symbol_stub_section, \
|
|
in_machopic_symbol_stub, \
|
|
".symbol_stub", 0) \
|
|
SECTION_FUNCTION (machopic_symbol_stub1_section, \
|
|
in_machopic_symbol_stub1, \
|
|
".section __TEXT,__symbol_stub1,symbol_stubs,pure_instructions,16", 0)\
|
|
SECTION_FUNCTION (machopic_picsymbol_stub_section, \
|
|
in_machopic_picsymbol_stub, \
|
|
".picsymbol_stub", 0) \
|
|
SECTION_FUNCTION (machopic_picsymbol_stub1_section, \
|
|
in_machopic_picsymbol_stub1, \
|
|
".section __TEXT,__picsymbolstub1,symbol_stubs,pure_instructions,32", 0)\
|
|
SECTION_FUNCTION (darwin_exception_section, \
|
|
in_darwin_exception, \
|
|
".section __DATA,__gcc_except_tab", 0) \
|
|
SECTION_FUNCTION (darwin_eh_frame_section, \
|
|
in_darwin_eh_frame, \
|
|
".section __TEXT,__eh_frame", 0) \
|
|
\
|
|
static void \
|
|
objc_section_init (void) \
|
|
{ \
|
|
static int been_here = 0; \
|
|
\
|
|
if (been_here == 0) \
|
|
{ \
|
|
been_here = 1; \
|
|
/* written, cold -> hot */ \
|
|
objc_cat_cls_meth_section (); \
|
|
objc_cat_inst_meth_section (); \
|
|
objc_string_object_section (); \
|
|
objc_constant_string_object_section (); \
|
|
objc_selector_refs_section (); \
|
|
objc_selector_fixup_section (); \
|
|
objc_cls_refs_section (); \
|
|
objc_class_section (); \
|
|
objc_meta_class_section (); \
|
|
/* shared, hot -> cold */ \
|
|
objc_cls_meth_section (); \
|
|
objc_inst_meth_section (); \
|
|
objc_protocol_section (); \
|
|
objc_class_names_section (); \
|
|
objc_meth_var_types_section (); \
|
|
objc_meth_var_names_section (); \
|
|
objc_category_section (); \
|
|
objc_class_vars_section (); \
|
|
objc_instance_vars_section (); \
|
|
objc_module_info_section (); \
|
|
objc_symbols_section (); \
|
|
} \
|
|
}
|
|
|
|
#define READONLY_DATA_SECTION const_section
|
|
|
|
#undef TARGET_ASM_SELECT_SECTION
|
|
#define TARGET_ASM_SELECT_SECTION machopic_select_section
|
|
#undef TARGET_ASM_SELECT_RTX_SECTION
|
|
#define TARGET_ASM_SELECT_RTX_SECTION machopic_select_rtx_section
|
|
|
|
#define ASM_DECLARE_UNRESOLVED_REFERENCE(FILE,NAME) \
|
|
do { \
|
|
if (FILE) { \
|
|
if (MACHOPIC_INDIRECT) \
|
|
fprintf (FILE, "\t.lazy_reference "); \
|
|
else \
|
|
fprintf (FILE, "\t.reference "); \
|
|
assemble_name (FILE, NAME); \
|
|
fprintf (FILE, "\n"); \
|
|
} \
|
|
} while (0)
|
|
|
|
#define ASM_DECLARE_CLASS_REFERENCE(FILE,NAME) \
|
|
do { \
|
|
if (FILE) { \
|
|
fprintf (FILE, "\t"); \
|
|
assemble_name (FILE, NAME); \
|
|
fprintf (FILE, "=0\n"); \
|
|
(*targetm.asm_out.globalize_label) (FILE, NAME); \
|
|
} \
|
|
} while (0)
|
|
|
|
/* Globalizing directive for a label. */
|
|
#define GLOBAL_ASM_OP ".globl "
|
|
#define TARGET_ASM_GLOBALIZE_LABEL darwin_globalize_label
|
|
|
|
/* Emit an assembler directive to set visibility for a symbol. Used
|
|
to support visibility attribute and Darwin's private extern
|
|
feature. */
|
|
#undef TARGET_ASM_ASSEMBLE_VISIBILITY
|
|
#define TARGET_ASM_ASSEMBLE_VISIBILITY darwin_assemble_visibility
|
|
|
|
|
|
#undef ASM_GENERATE_INTERNAL_LABEL
|
|
#define ASM_GENERATE_INTERNAL_LABEL(LABEL,PREFIX,NUM) \
|
|
sprintf (LABEL, "*%s%ld", PREFIX, (long)(NUM))
|
|
|
|
/* Since we have a separate readonly data section, define this so that
|
|
jump tables end up in text rather than data. */
|
|
|
|
#ifndef JUMP_TABLES_IN_TEXT_SECTION
|
|
#define JUMP_TABLES_IN_TEXT_SECTION 1
|
|
#endif
|
|
|
|
/* Symbolic names for various things we might know about a symbol. */
|
|
|
|
enum machopic_addr_class {
|
|
MACHOPIC_UNDEFINED,
|
|
MACHOPIC_DEFINED_DATA,
|
|
MACHOPIC_UNDEFINED_DATA,
|
|
MACHOPIC_DEFINED_FUNCTION,
|
|
MACHOPIC_UNDEFINED_FUNCTION
|
|
};
|
|
|
|
/* Macros defining the various PIC cases. */
|
|
|
|
#define MACHO_DYNAMIC_NO_PIC_P (TARGET_DYNAMIC_NO_PIC)
|
|
#define MACHOPIC_INDIRECT (flag_pic || MACHO_DYNAMIC_NO_PIC_P)
|
|
#define MACHOPIC_JUST_INDIRECT (flag_pic == 1 || MACHO_DYNAMIC_NO_PIC_P)
|
|
#define MACHOPIC_PURE (flag_pic == 2 && ! MACHO_DYNAMIC_NO_PIC_P)
|
|
|
|
#undef TARGET_ENCODE_SECTION_INFO
|
|
#define TARGET_ENCODE_SECTION_INFO darwin_encode_section_info
|
|
#undef TARGET_STRIP_NAME_ENCODING
|
|
#define TARGET_STRIP_NAME_ENCODING darwin_strip_name_encoding
|
|
|
|
#define GEN_BINDER_NAME_FOR_STUB(BUF,STUB,STUB_LENGTH) \
|
|
do { \
|
|
const char *const stub_ = (STUB); \
|
|
char *buffer_ = (BUF); \
|
|
strcpy (buffer_, stub_); \
|
|
if (stub_[0] == '"') \
|
|
{ \
|
|
strcpy (buffer_ + (STUB_LENGTH) - 1, "_binder\""); \
|
|
} \
|
|
else \
|
|
{ \
|
|
strcpy (buffer_ + (STUB_LENGTH), "_binder"); \
|
|
} \
|
|
} while (0)
|
|
|
|
#define GEN_SYMBOL_NAME_FOR_SYMBOL(BUF,SYMBOL,SYMBOL_LENGTH) \
|
|
do { \
|
|
const char *const symbol_ = (SYMBOL); \
|
|
char *buffer_ = (BUF); \
|
|
if (name_needs_quotes (symbol_) && symbol_[0] != '"') \
|
|
{ \
|
|
sprintf (buffer_, "\"%s\"", symbol_); \
|
|
} \
|
|
else \
|
|
{ \
|
|
strcpy (buffer_, symbol_); \
|
|
} \
|
|
} while (0)
|
|
|
|
/* Given a symbol name string, create the lazy pointer version
|
|
of the symbol name. */
|
|
|
|
#define GEN_LAZY_PTR_NAME_FOR_SYMBOL(BUF,SYMBOL,SYMBOL_LENGTH) \
|
|
do { \
|
|
const char *symbol_ = darwin_strip_name_encoding (SYMBOL); \
|
|
char *buffer_ = (BUF); \
|
|
if (symbol_[0] == '"') \
|
|
{ \
|
|
strcpy (buffer_, "\"L"); \
|
|
strcpy (buffer_ + 2, symbol_ + 1); \
|
|
strcpy (buffer_ + (SYMBOL_LENGTH), "$lazy_ptr\""); \
|
|
} \
|
|
else if (name_needs_quotes (symbol_)) \
|
|
{ \
|
|
strcpy (buffer_, "\"L"); \
|
|
strcpy (buffer_ + 2, symbol_); \
|
|
strcpy (buffer_ + (SYMBOL_LENGTH) + 2, "$lazy_ptr\""); \
|
|
} \
|
|
else \
|
|
{ \
|
|
strcpy (buffer_, "L"); \
|
|
strcpy (buffer_ + 1, symbol_); \
|
|
strcpy (buffer_ + (SYMBOL_LENGTH) + 1, "$lazy_ptr"); \
|
|
} \
|
|
} while (0)
|
|
|
|
#define TARGET_ASM_EXCEPTION_SECTION darwin_exception_section
|
|
|
|
#define TARGET_ASM_EH_FRAME_SECTION darwin_eh_frame_section
|
|
|
|
#undef ASM_PREFERRED_EH_DATA_FORMAT
|
|
#define ASM_PREFERRED_EH_DATA_FORMAT(CODE,GLOBAL) \
|
|
(((CODE) == 2 && (GLOBAL) == 1) \
|
|
? (DW_EH_PE_pcrel | DW_EH_PE_indirect) : \
|
|
((CODE) == 1 || (GLOBAL) == 0) ? DW_EH_PE_pcrel : DW_EH_PE_absptr)
|
|
|
|
#define ASM_OUTPUT_DWARF_DELTA(FILE,SIZE,LABEL1,LABEL2) \
|
|
darwin_asm_output_dwarf_delta (FILE, SIZE, LABEL1, LABEL2)
|
|
|
|
#define TARGET_TERMINATE_DW2_EH_FRAME_INFO false
|
|
|
|
#define DARWIN_REGISTER_TARGET_PRAGMAS() \
|
|
do { \
|
|
c_register_pragma (0, "mark", darwin_pragma_ignore); \
|
|
c_register_pragma (0, "options", darwin_pragma_options); \
|
|
c_register_pragma (0, "segment", darwin_pragma_ignore); \
|
|
c_register_pragma (0, "unused", darwin_pragma_unused); \
|
|
} while (0)
|
|
|
|
#undef ASM_APP_ON
|
|
#define ASM_APP_ON ""
|
|
#undef ASM_APP_OFF
|
|
#define ASM_APP_OFF ""
|