/* Target definitions for Darwin (Mac OS X) systems.
- Copyright (C) 1989, 1990, 1991, 1992, 1993, 2000, 2001, 2002
+ Copyright (C) 1989, 1990, 1991, 1992, 1993, 2000, 2001, 2002, 2003, 2004,
+ 2005, 2006, 2007, 2008, 2009
Free Software Foundation, Inc.
Contributed by Apple Computer Inc.
-This file is part of GNU CC.
+This file is part of GCC.
-GNU CC is free software; you can redistribute it and/or modify
+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)
+the Free Software Foundation; either version 3, or (at your option)
any later version.
-GNU CC is distributed in the hope that it will be useful,
+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 GNU CC; see the file COPYING. If not, write to
-the Free Software Foundation, 59 Temple Place - Suite 330,
-Boston, MA 02111-1307, USA. */
+Under Section 7 of GPL version 3, you are granted additional
+permissions described in the GCC Runtime Library Exception, version
+3.1, as published by the Free Software Foundation.
+
+You should have received a copy of the GNU General Public License and
+a copy of the GCC Runtime Library Exception along with this program;
+see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
+<http://www.gnu.org/licenses/>. */
+
+#ifndef CONFIG_DARWIN_H
+#define CONFIG_DARWIN_H
/* The definitions in this file are common to all processor types
running Darwin, which is the kernel for Mac OS X. Darwin is
/* Although NeXT ran on many different architectures, as of Jan 2001
the only supported Darwin targets are PowerPC and x86. */
-/* Technically, STANDARD_EXEC_PREFIX should be /usr/libexec/, but in
- practice this makes it hard to install new compilers elsewhere, so
- leave it undefined and expect system builders to set configure args
- correctly. */
+/* One of Darwin's NeXT legacies is the Mach-O format, which is partly
+ like a.out and partly like COFF, with additional features like
+ multi-architecture binary support. */
-/* Suppress g++ attempt to link in the math library automatically.
- (Some Darwin versions have a libm, but they seem to cause problems
- for C++ executables.) */
+#define OBJECT_FORMAT_MACHO
+/* Don't assume anything about the header files. */
+#define NO_IMPLICIT_EXTERN_C
+
+/* Suppress g++ attempt to link in the math library automatically. */
#define MATH_LIBRARY ""
/* We have atexit. */
#undef DEFAULT_PCC_STRUCT_RETURN
#define DEFAULT_PCC_STRUCT_RETURN 0
-/* Don't warn about MacOS-style 'APPL' four-char-constants. */
-
-#undef WARN_FOUR_CHAR_CONSTANTS
-#define WARN_FOUR_CHAR_CONSTANTS 0
+/* True if pragma ms_struct is in effect. */
+extern GTY(()) int darwin_ms_struct;
+
+/* This table intercepts weirdo options whose names would interfere
+ with normal driver conventions, and either translates them into
+ standardly-named options, or adds a 'Z' so that they can get to
+ specs processing without interference.
+
+ Do not expand a linker option to "-Xlinker -<option>", since that
+ forfeits the ability to control via spec strings later. However,
+ as a special exception, do this translation with -filelist, because
+ otherwise the driver will think there are no input files and quit.
+ (The alternative would be to hack the driver to recognize -filelist
+ specially, but it's simpler to use the translation table.)
+
+ Note that an option name with a prefix that matches another option
+ name, that also takes an argument, needs to be modified so the
+ prefix is different, otherwise a '*' after the shorter option will
+ match with the longer one.
+
+ The SUBTARGET_OPTION_TRANSLATE_TABLE macro, which _must_ be defined
+ in gcc/config/{i386,rs6000}/darwin.h, should contain any additional
+ command-line option translations specific to the particular target
+ architecture. */
+
+#define TARGET_OPTION_TRANSLATE_TABLE \
+ { "-all_load", "-Zall_load" }, \
+ { "-allowable_client", "-Zallowable_client" }, \
+ { "-arch_errors_fatal", "-Zarch_errors_fatal" }, \
+ { "-bind_at_load", "-Zbind_at_load" }, \
+ { "-bundle", "-Zbundle" }, \
+ { "-bundle_loader", "-Zbundle_loader" }, \
+ { "-weak_reference_mismatches", "-Zweak_reference_mismatches" }, \
+ { "-dead_strip", "-Zdead_strip" }, \
+ { "-no_dead_strip_inits_and_terms", "-Zno_dead_strip_inits_and_terms" }, \
+ { "-dependency-file", "-MF" }, \
+ { "-dylib_file", "-Zdylib_file" }, \
+ { "-dynamic", "-Zdynamic" }, \
+ { "-dynamiclib", "-Zdynamiclib" }, \
+ { "-exported_symbols_list", "-Zexported_symbols_list" }, \
+ { "-gfull", "-g -fno-eliminate-unused-debug-symbols" }, \
+ { "-gused", "-g -feliminate-unused-debug-symbols" }, \
+ { "-segaddr", "-Zsegaddr" }, \
+ { "-segs_read_only_addr", "-Zsegs_read_only_addr" }, \
+ { "-segs_read_write_addr", "-Zsegs_read_write_addr" }, \
+ { "-seg_addr_table", "-Zseg_addr_table" }, \
+ { "-seg_addr_table_filename", "-Zfn_seg_addr_table_filename" }, \
+ { "-umbrella", "-Zumbrella" }, \
+ { "-fapple-kext", "-fapple-kext -static -Wa,-static" }, \
+ { "-filelist", "-Xlinker -filelist -Xlinker" }, \
+ { "-findirect-virtual-calls", "-fapple-kext" }, \
+ { "-flat_namespace", "-Zflat_namespace" }, \
+ { "-force_cpusubtype_ALL", "-Zforce_cpusubtype_ALL" }, \
+ { "-force_flat_namespace", "-Zforce_flat_namespace" }, \
+ { "-framework", "-Xlinker -framework -Xlinker" }, \
+ { "-fterminated-vtables", "-fapple-kext" }, \
+ { "-image_base", "-Zimage_base" }, \
+ { "-init", "-Zinit" }, \
+ { "-install_name", "-Zinstall_name" }, \
+ { "-mkernel", "-mkernel -static -Wa,-static" }, \
+ { "-multiply_defined_unused", "-Zmultiplydefinedunused" }, \
+ { "-multiply_defined", "-Zmultiply_defined" }, \
+ { "-multi_module", "-Zmulti_module" }, \
+ { "-static", "-static -Wa,-static" }, \
+ { "-shared", "-Zdynamiclib" }, \
+ { "-single_module", "-Zsingle_module" }, \
+ { "-unexported_symbols_list", "-Zunexported_symbols_list" }, \
+ SUBTARGET_OPTION_TRANSLATE_TABLE
+
+#define SUBSUBTARGET_OVERRIDE_OPTIONS \
+ do { \
+ darwin_override_options (); \
+ } while (0)
-/* Machine dependent cpp options. */
+/* These compiler options take n arguments. */
+
+#undef WORD_SWITCH_TAKES_ARG
+#define WORD_SWITCH_TAKES_ARG(STR) \
+ (DEFAULT_WORD_SWITCH_TAKES_ARG (STR) ? 1 : \
+ !strcmp (STR, "Zallowable_client") ? 1 : \
+ !strcmp (STR, "arch") ? 1 : \
+ !strcmp (STR, "arch_only") ? 1 : \
+ !strcmp (STR, "Zbundle_loader") ? 1 : \
+ !strcmp (STR, "client_name") ? 1 : \
+ !strcmp (STR, "compatibility_version") ? 1 : \
+ !strcmp (STR, "current_version") ? 1 : \
+ !strcmp (STR, "Zdylib_file") ? 1 : \
+ !strcmp (STR, "Zexported_symbols_list") ? 1 : \
+ !strcmp (STR, "Zimage_base") ? 1 : \
+ !strcmp (STR, "Zinit") ? 1 : \
+ !strcmp (STR, "Zinstall_name") ? 1 : \
+ !strcmp (STR, "Zmultiplydefinedunused") ? 1 : \
+ !strcmp (STR, "Zmultiply_defined") ? 1 : \
+ !strcmp (STR, "precomp-trustfile") ? 1 : \
+ !strcmp (STR, "read_only_relocs") ? 1 : \
+ !strcmp (STR, "sectcreate") ? 3 : \
+ !strcmp (STR, "sectorder") ? 3 : \
+ !strcmp (STR, "Zsegaddr") ? 2 : \
+ !strcmp (STR, "Zsegs_read_only_addr") ? 1 : \
+ !strcmp (STR, "Zsegs_read_write_addr") ? 1 : \
+ !strcmp (STR, "Zseg_addr_table") ? 1 : \
+ !strcmp (STR, "Zfn_seg_addr_table_filename") ? 1 :\
+ !strcmp (STR, "seg1addr") ? 1 : \
+ !strcmp (STR, "segprot") ? 3 : \
+ !strcmp (STR, "sub_library") ? 1 : \
+ !strcmp (STR, "sub_umbrella") ? 1 : \
+ !strcmp (STR, "Zumbrella") ? 1 : \
+ !strcmp (STR, "undefined") ? 1 : \
+ !strcmp (STR, "Zunexported_symbols_list") ? 1 : \
+ !strcmp (STR, "Zweak_reference_mismatches") ? 1 : \
+ !strcmp (STR, "pagezero_size") ? 1 : \
+ !strcmp (STR, "segs_read_only_addr") ? 1 : \
+ !strcmp (STR, "segs_read_write_addr") ? 1 : \
+ !strcmp (STR, "sectalign") ? 3 : \
+ !strcmp (STR, "sectobjectsymbols") ? 2 : \
+ !strcmp (STR, "segcreate") ? 3 : \
+ !strcmp (STR, "dylinker_install_name") ? 1 : \
+ 0)
+
+#define SUBTARGET_C_COMMON_OVERRIDE_OPTIONS do { \
+ if (flag_mkernel || flag_apple_kext) \
+ { \
+ if (flag_use_cxa_atexit == 2) \
+ flag_use_cxa_atexit = 0; \
+ /* kexts should always be built without the coalesced sections \
+ because the kernel loader doesn't grok such sections. */ \
+ flag_weak = 0; \
+ /* No RTTI in kexts. */ \
+ flag_rtti = 0; \
+ } \
+ } while (0)
-/* The sequence here allows us to get a more specific version number
- glued into __APPLE_CC__. Normally this number would be updated as
- part of submitting to a release engineering organization. */
+/* Machine dependent cpp options. Don't add more options here, add
+ them to darwin_cpp_builtins in darwin-c.c. */
-#ifndef APPLE_CC
-#define APPLE_CC 999
+#undef CPP_SPEC
+#define CPP_SPEC "%{static:%{!dynamic:-D__STATIC__}}%{!static:-D__DYNAMIC__}" \
+ " %{pthread:-D_REENTRANT}"
+
+/* This is mostly a clone of the standard LINK_COMMAND_SPEC, plus
+ precomp, libtool, and fat build additions. Also we
+ don't specify a second %G after %L because libSystem is
+ self-contained and doesn't need to link against libgcc.a. */
+/* In general, random Darwin linker flags should go into LINK_SPEC
+ instead of LINK_COMMAND_SPEC. The command spec is better for
+ specifying the handling of options understood by generic Unix
+ linkers, and for positional arguments like libraries. */
+#define LINK_COMMAND_SPEC "\
+%{!fdump=*:%{!fsyntax-only:%{!c:%{!M:%{!MM:%{!E:%{!S:\
+ %(linker) %l %X %{d} %{s} %{t} %{Z} %{u*} \
+ %{A} %{e*} %{m} %{r} %{x} \
+ %{o*}%{!o:-o a.out} \
+ %{!A:%{!nostdlib:%{!nostartfiles:%S}}} \
+ %{L*} %{fopenmp:%:include(libgomp.spec)%(link_gomp)} \
+ %(link_libgcc) %o %{fprofile-arcs|fprofile-generate|coverage:-lgcov} \
+ %{!nostdlib:%{!nodefaultlibs:%(link_ssp) %G %L}} \
+ %{!A:%{!nostdlib:%{!nostartfiles:%E}}} %{T*} %{F*} }}}}}}}\n\
+%{!fdump=*:%{!fsyntax-only:%{!c:%{!M:%{!MM:%{!E:%{!S:\
+ %{.c|.cc|.C|.cpp|.cp|.c++|.cxx|.CPP|.m|.mm: \
+ %{gdwarf-2:%{!gstabs*:%{!g0: dsymutil %{o*:%*}%{!o:a.out}}}}}}}}}}}}"
+
+#ifdef TARGET_SYSTEM_ROOT
+#define LINK_SYSROOT_SPEC \
+ "%{isysroot*:-syslibroot %*;:-syslibroot " TARGET_SYSTEM_ROOT "}"
+#else
+#define LINK_SYSROOT_SPEC "%{isysroot*:-syslibroot %*}"
#endif
-#define STRINGIFY_THIS(x) # x
-#define REALLY_STRINGIFY(x) STRINGIFY_THIS(x)
+/* Please keep the random linker options in alphabetical order (modulo
+ 'Z' and 'no' prefixes). Note that options taking arguments may appear
+ multiple times on a command line with different arguments each time,
+ so put a * after their names so all of them get passed. */
+#define LINK_SPEC \
+ "%{static}%{!static:-dynamic} \
+ %{fgnu-runtime:%:replace-outfile(-lobjc -lobjc-gnu)}\
+ %{static|static-libgfortran:%:replace-outfile(-lgfortran libgfortran.a%s)}\
+ %{!Zdynamiclib: \
+ %{Zforce_cpusubtype_ALL:-arch %(darwin_arch) -force_cpusubtype_ALL} \
+ %{!Zforce_cpusubtype_ALL:-arch %(darwin_subarch)} \
+ %{Zbundle:-bundle} \
+ %{Zbundle_loader*:-bundle_loader %*} \
+ %{client_name*} \
+ %{compatibility_version*:%e-compatibility_version only allowed with -dynamiclib\
+} \
+ %{current_version*:%e-current_version only allowed with -dynamiclib} \
+ %{Zforce_flat_namespace:-force_flat_namespace} \
+ %{Zinstall_name*:%e-install_name only allowed with -dynamiclib} \
+ %{keep_private_externs} \
+ %{private_bundle} \
+ } \
+ %{Zdynamiclib: -dylib \
+ %{Zbundle:%e-bundle not allowed with -dynamiclib} \
+ %{Zbundle_loader*:%e-bundle_loader not allowed with -dynamiclib} \
+ %{client_name*:%e-client_name not allowed with -dynamiclib} \
+ %{compatibility_version*:-dylib_compatibility_version %*} \
+ %{current_version*:-dylib_current_version %*} \
+ %{Zforce_cpusubtype_ALL:-arch %(darwin_arch)} \
+ %{!Zforce_cpusubtype_ALL: -arch %(darwin_subarch)} \
+ %{Zforce_flat_namespace:%e-force_flat_namespace not allowed with -dynamiclib} \
+ %{Zinstall_name*:-dylib_install_name %*} \
+ %{keep_private_externs:%e-keep_private_externs not allowed with -dynamiclib} \
+ %{private_bundle:%e-private_bundle not allowed with -dynamiclib} \
+ } \
+ %{Zall_load:-all_load} \
+ %{Zallowable_client*:-allowable_client %*} \
+ %{Zbind_at_load:-bind_at_load} \
+ %{Zarch_errors_fatal:-arch_errors_fatal} \
+ %{Zdead_strip:-dead_strip} \
+ %{Zno_dead_strip_inits_and_terms:-no_dead_strip_inits_and_terms} \
+ %{Zdylib_file*:-dylib_file %*} \
+ %{Zdynamic:-dynamic}\
+ %{Zexported_symbols_list*:-exported_symbols_list %*} \
+ %{Zflat_namespace:-flat_namespace} \
+ %{headerpad_max_install_names*} \
+ %{Zimage_base*:-image_base %*} \
+ %{Zinit*:-init %*} \
+ %{!mmacosx-version-min=*:-macosx_version_min %(darwin_minversion)} \
+ %{mmacosx-version-min=*:-macosx_version_min %*} \
+ %{nomultidefs} \
+ %{Zmulti_module:-multi_module} %{Zsingle_module:-single_module} \
+ %{Zmultiply_defined*:-multiply_defined %*} \
+ %{!Zmultiply_defined*:%{shared-libgcc: \
+ %:version-compare(< 10.5 mmacosx-version-min= -multiply_defined) \
+ %:version-compare(< 10.5 mmacosx-version-min= suppress)}} \
+ %{Zmultiplydefinedunused*:-multiply_defined_unused %*} \
+ %{fpie:-pie} \
+ %{prebind} %{noprebind} %{nofixprebinding} %{prebind_all_twolevel_modules} \
+ %{read_only_relocs} \
+ %{sectcreate*} %{sectorder*} %{seg1addr*} %{segprot*} \
+ %{Zsegaddr*:-segaddr %*} \
+ %{Zsegs_read_only_addr*:-segs_read_only_addr %*} \
+ %{Zsegs_read_write_addr*:-segs_read_write_addr %*} \
+ %{Zseg_addr_table*: -seg_addr_table %*} \
+ %{Zfn_seg_addr_table_filename*:-seg_addr_table_filename %*} \
+ %{sub_library*} %{sub_umbrella*} \
+ " LINK_SYSROOT_SPEC " \
+ %{twolevel_namespace} %{twolevel_namespace_hints} \
+ %{Zumbrella*: -umbrella %*} \
+ %{undefined*} \
+ %{Zunexported_symbols_list*:-unexported_symbols_list %*} \
+ %{Zweak_reference_mismatches*:-weak_reference_mismatches %*} \
+ %{!Zweak_reference_mismatches*:-weak_reference_mismatches non-weak} \
+ %{X} \
+ %{y*} \
+ %{w} \
+ %{pagezero_size*} %{segs_read_*} %{seglinkedit} %{noseglinkedit} \
+ %{sectalign*} %{sectobjectsymbols*} %{segcreate*} %{whyload} \
+ %{whatsloaded} %{dylinker_install_name*} \
+ %{dylinker} %{Mach} "
-#undef CPP_SPEC
-#define CPP_SPEC "-D__APPLE_CC__=" REALLY_STRINGIFY(APPLE_CC) " \
- %{static:-D__STATIC__}%{!static:-D__DYNAMIC__}"
/* Machine dependent libraries. */
-#undef LIB_SPEC
#define LIB_SPEC "%{!static:-lSystem}"
-/* We specify crt0.o as -lcrt0.o so that ld will search the library path. */
+/* Support -mmacosx-version-min by supplying different (stub) libgcc_s.dylib
+ libraries to link against, and by not linking against libgcc_s on
+ earlier-than-10.3.9.
+
+ Note that by default, -lgcc_eh is not linked against! This is
+ because in a future version of Darwin the EH frame information may
+ be in a new format, or the fallback routine might be changed; if
+ you want to explicitly link against the static version of those
+ routines, because you know you don't need to unwind through system
+ libraries, you need to explicitly say -static-libgcc.
+
+ If it is linked against, it has to be before -lgcc, because it may
+ need symbols from -lgcc. */
+#undef REAL_LIBGCC_SPEC
+#define REAL_LIBGCC_SPEC \
+ "%{static-libgcc|static: -lgcc_eh -lgcc; \
+ shared-libgcc|fexceptions|fgnu-runtime: \
+ %:version-compare(!> 10.5 mmacosx-version-min= -lgcc_s.10.4) \
+ %:version-compare(>= 10.5 mmacosx-version-min= -lgcc_s.10.5) \
+ -lgcc; \
+ :%:version-compare(>< 10.3.9 10.5 mmacosx-version-min= -lgcc_s.10.4) \
+ %:version-compare(>= 10.5 mmacosx-version-min= -lgcc_s.10.5) \
+ -lgcc}"
+
+/* We specify crt0.o as -lcrt0.o so that ld will search the library path.
+
+ crt3.o provides __cxa_atexit on systems that don't have it. Since
+ it's only used with C++, which requires passing -shared-libgcc, key
+ off that to avoid unnecessarily adding a destructor to every
+ powerpc program built. */
+
+#undef STARTFILE_SPEC
+#define STARTFILE_SPEC \
+ "%{Zdynamiclib: %(darwin_dylib1) } \
+ %{!Zdynamiclib:%{Zbundle:%{!static:-lbundle1.o}} \
+ %{!Zbundle:%{pg:%{static:-lgcrt0.o} \
+ %{!static:%{object:-lgcrt0.o} \
+ %{!object:%{preload:-lgcrt0.o} \
+ %{!preload:-lgcrt1.o %(darwin_crt2)}}}} \
+ %{!pg:%{static:-lcrt0.o} \
+ %{!static:%{object:-lcrt0.o} \
+ %{!object:%{preload:-lcrt0.o} \
+ %{!preload: %(darwin_crt1) \
+ %(darwin_crt2)}}}}}} \
+ %{shared-libgcc:%:version-compare(< 10.5 mmacosx-version-min= crt3.o%s)}"
+
+/* The native Darwin linker doesn't necessarily place files in the order
+ that they're specified on the link line. Thus, it is pointless
+ to put anything in ENDFILE_SPEC. */
+/* #define ENDFILE_SPEC "" */
+
+#define DARWIN_EXTRA_SPECS \
+ { "darwin_crt1", DARWIN_CRT1_SPEC }, \
+ { "darwin_dylib1", DARWIN_DYLIB1_SPEC }, \
+ { "darwin_minversion", DARWIN_MINVERSION_SPEC },
+
+#define DARWIN_DYLIB1_SPEC \
+ "%:version-compare(!> 10.5 mmacosx-version-min= -ldylib1.o) \
+ %:version-compare(>= 10.5 mmacosx-version-min= -ldylib1.10.5.o)"
+
+#define DARWIN_CRT1_SPEC \
+ "%:version-compare(!> 10.5 mmacosx-version-min= -lcrt1.o) \
+ %:version-compare(>= 10.5 mmacosx-version-min= -lcrt1.10.5.o)"
+
+/* Default Darwin ASM_SPEC, very simple. */
+#define ASM_SPEC "-arch %(darwin_arch) \
+ %{Zforce_cpusubtype_ALL:-force_cpusubtype_ALL}"
+
+/* We still allow output of STABS. */
+
+#define DBX_DEBUGGING_INFO 1
+
+#define DWARF2_DEBUGGING_INFO
+#define PREFERRED_DEBUGGING_TYPE DBX_DEBUG
-#undef STARTFILE_SPEC
-#define STARTFILE_SPEC \
- "%{pg:%{static:-lgcrt0.o}%{!static:-lgcrt1.o}} \
- %{!pg:%{static:-lcrt0.o}%{!static:-lcrt1.o}}"
+#define DEBUG_FRAME_SECTION "__DWARF,__debug_frame,regular,debug"
+#define DEBUG_INFO_SECTION "__DWARF,__debug_info,regular,debug"
+#define DEBUG_ABBREV_SECTION "__DWARF,__debug_abbrev,regular,debug"
+#define DEBUG_ARANGES_SECTION "__DWARF,__debug_aranges,regular,debug"
+#define DEBUG_MACINFO_SECTION "__DWARF,__debug_macinfo,regular,debug"
+#define DEBUG_LINE_SECTION "__DWARF,__debug_line,regular,debug"
+#define DEBUG_LOC_SECTION "__DWARF,__debug_loc,regular,debug"
+#define DEBUG_PUBNAMES_SECTION "__DWARF,__debug_pubnames,regular,debug"
+#define DEBUG_PUBTYPES_SECTION "__DWARF,__debug_pubtypes,regular,debug"
+#define DEBUG_STR_SECTION "__DWARF,__debug_str,regular,debug"
+#define DEBUG_RANGES_SECTION "__DWARF,__debug_ranges,regular,debug"
-#undef DOLLARS_IN_IDENTIFIERS
-#define DOLLARS_IN_IDENTIFIERS 2
+/* When generating stabs debugging, use N_BINCL entries. */
-/* Allow #sccs (but don't do anything). */
+#define DBX_USE_BINCL
-#define SCCS_DIRECTIVE
+/* There is no limit to the length of stabs strings. */
-/* We use Dbx symbol format. */
+#define DBX_CONTIN_LENGTH 0
-#define DBX_DEBUGGING_INFO
+/* gdb needs a null N_SO at the end of each file for scattered loading. */
-/* Also enable Dwarf 2 as an option. */
+#define DBX_OUTPUT_NULL_N_SO_AT_MAIN_SOURCE_FILE_END
-#define DWARF2_DEBUGGING_INFO
+/* GCC's definition of 'one_only' is the same as its definition of 'weak'. */
+#define MAKE_DECL_ONE_ONLY(DECL) (DECL_WEAK (DECL) = 1)
-#define PREFERRED_DEBUGGING_TYPE DBX_DEBUG
+/* Mach-O supports 'weak imports', and 'weak definitions' in coalesced
+ sections. machopic_select_section ensures that weak variables go in
+ coalesced sections. Weak aliases (or any other kind of aliases) are
+ not supported. Weak symbols that aren't visible outside the .s file
+ are not supported. */
+#define ASM_WEAKEN_DECL(FILE, DECL, NAME, ALIAS) \
+ do { \
+ if (ALIAS) \
+ { \
+ warning (0, "alias definitions not supported in Mach-O; ignored"); \
+ break; \
+ } \
+ \
+ if (! DECL_EXTERNAL (DECL) && TREE_PUBLIC (DECL)) \
+ targetm.asm_out.globalize_label (FILE, NAME); \
+ if (DECL_EXTERNAL (DECL)) \
+ fputs ("\t.weak_reference ", FILE); \
+ else if (! lookup_attribute ("weak", DECL_ATTRIBUTES (DECL)) \
+ && lookup_attribute ("weak_import", DECL_ATTRIBUTES (DECL))) \
+ break; \
+ else if (TREE_PUBLIC (DECL)) \
+ fputs ("\t.weak_definition ", FILE); \
+ else \
+ break; \
+ assemble_name (FILE, NAME); \
+ fputc ('\n', FILE); \
+ } while (0)
-/* When generating stabs debugging, use N_BINCL entries. */
+/* Darwin has the pthread routines in libSystem, which every program
+ links to, so there's no need for weak-ness for that. */
+#define GTHREAD_USE_WEAK 0
-#define DBX_USE_BINCL
+/* The Darwin linker imposes two limitations on common symbols: they
+ can't have hidden visibility, and they can't appear in dylibs. As
+ a consequence, we should never use common symbols to represent
+ vague linkage. */
+#undef USE_COMMON_FOR_ONE_ONLY
+#define USE_COMMON_FOR_ONE_ONLY 0
-/* There is no limit to the length of stabs strings. */
+/* The Darwin linker doesn't want coalesced symbols to appear in
+ a static archive's table of contents. */
+#undef TARGET_WEAK_NOT_IN_ARCHIVE_TOC
+#define TARGET_WEAK_NOT_IN_ARCHIVE_TOC 1
-#define DBX_CONTIN_LENGTH 0
+/* On Darwin, we don't (at the time of writing) have linkonce sections
+ with names, so it's safe to make the class data not comdat. */
+#define TARGET_CXX_CLASS_DATA_ALWAYS_COMDAT hook_bool_void_false
-/* gdb needs a null N_SO at the end of each file for scattered loading. */
+/* For efficiency, on Darwin the RTTI information that is always
+ emitted in the standard C++ library should not be COMDAT. */
+#define TARGET_CXX_LIBRARY_RTTI_COMDAT hook_bool_void_false
-#undef DBX_OUTPUT_MAIN_SOURCE_FILE_END
-#define DBX_OUTPUT_MAIN_SOURCE_FILE_END(FILE, FILENAME) \
-do { text_section (); \
- fprintf (FILE, \
- "\t.stabs \"%s\",%d,0,0,Letext\nLetext:\n", "" , N_SO); \
- } while (0)
+/* We make exception information linkonce. */
+#undef TARGET_USES_WEAK_UNWIND_INFO
+#define TARGET_USES_WEAK_UNWIND_INFO 1
+
+/* We need to use a nonlocal label for the start of an EH frame: the
+ Darwin linker requires that a coalesced section start with a label.
+ Unfortunately, it also requires that 'debug' sections don't contain
+ labels. */
+#undef FRAME_BEGIN_LABEL
+#define FRAME_BEGIN_LABEL (for_eh ? "EH_frame" : "Lframe")
+
+/* Emit a label for the FDE corresponding to DECL. EMPTY means
+ emit a label for an empty FDE. */
+#define TARGET_ASM_EMIT_UNWIND_LABEL darwin_emit_unwind_label
+
+/* Emit a label to separate the exception table. */
+#define TARGET_ASM_EMIT_EXCEPT_TABLE_LABEL darwin_emit_except_table_label
/* Our profiling scheme doesn't LP labels and counter words. */
-#define NO_PROFILE_COUNTERS
+#define NO_PROFILE_COUNTERS 1
#undef INIT_SECTION_ASM_OP
#define INIT_SECTION_ASM_OP
#define TARGET_ASM_CONSTRUCTOR machopic_asm_out_constructor
#define TARGET_ASM_DESTRUCTOR machopic_asm_out_destructor
+/* Always prefix with an underscore. */
+
+#define USER_LABEL_PREFIX "_"
+
+/* A dummy symbol that will be replaced with the function base name. */
+#define MACHOPIC_FUNCTION_BASE_NAME "<pic base>"
/* Don't output a .file directive. That is only used by the assembler for
error reporting. */
+#undef TARGET_ASM_FILE_START_FILE_DIRECTIVE
+#define TARGET_ASM_FILE_START_FILE_DIRECTIVE false
-#undef ASM_FILE_START
-#define ASM_FILE_START(FILE)
+#undef TARGET_ASM_FILE_END
+#define TARGET_ASM_FILE_END darwin_file_end
-#undef ASM_FILE_END
-#define ASM_FILE_END(FILE) \
- do { \
- machopic_finish (asm_out_file); \
- if (strcmp (lang_hooks.name, "GNU C++") == 0) \
- { \
- constructor_section (); \
- destructor_section (); \
- ASM_OUTPUT_ALIGN (FILE, 1); \
- } \
- } while (0)
+#define ASM_OUTPUT_SKIP(FILE,SIZE) \
+ fprintf (FILE, "\t.space "HOST_WIDE_INT_PRINT_UNSIGNED"\n", SIZE)
-/* Give ObjcC methods pretty symbol names. */
+/* Give ObjC methods pretty symbol names. */
#undef OBJC_GEN_METHOD_LABEL
#define OBJC_GEN_METHOD_LABEL(BUF,IS_INST,CLASS_NAME,CAT_NAME,SEL_NAME,NUM) \
/* The RTTI data (e.g., __ti4name) is common and public (and static),
but it does need to be referenced via indirect PIC data pointers.
- The machopic_define_name calls are telling the machopic subsystem
+ The machopic_define_symbol calls are telling the machopic subsystem
that the name *is* defined in this module, so it doesn't need to
make them indirect. */
#undef ASM_DECLARE_OBJECT_NAME
#define ASM_DECLARE_OBJECT_NAME(FILE, NAME, DECL) \
do { \
- const char *xname = NAME; \
- if (GET_CODE (XEXP (DECL_RTL (DECL), 0)) != SYMBOL_REF) \
- xname = IDENTIFIER_POINTER (DECL_NAME (DECL)); \
- if ((TREE_STATIC (DECL) \
- && (!DECL_COMMON (DECL) || !TREE_PUBLIC (DECL))) \
- || DECL_INITIAL (DECL)) \
- machopic_define_name (xname); \
- if ((TREE_STATIC (DECL) \
- && (!DECL_COMMON (DECL) || !TREE_PUBLIC (DECL))) \
- || DECL_INITIAL (DECL)) \
- ENCODE_SECTION_INFO (DECL); \
- ASM_OUTPUT_LABEL (FILE, xname); \
+ const char *xname = NAME; \
+ if (GET_CODE (XEXP (DECL_RTL (DECL), 0)) != SYMBOL_REF) \
+ xname = IDENTIFIER_POINTER (DECL_NAME (DECL)); \
+ if (! DECL_WEAK (DECL) \
+ && ((TREE_STATIC (DECL) \
+ && (!DECL_COMMON (DECL) || !TREE_PUBLIC (DECL))) \
+ || DECL_INITIAL (DECL))) \
+ machopic_define_symbol (DECL_RTL (DECL)); \
+ if ((TREE_STATIC (DECL) \
+ && (!DECL_COMMON (DECL) || !TREE_PUBLIC (DECL))) \
+ || DECL_INITIAL (DECL)) \
+ (* targetm.encode_section_info) (DECL, DECL_RTL (DECL), false); \
+ ASM_OUTPUT_LABEL (FILE, xname); \
+ /* Darwin doesn't support zero-size objects, so give them a \
+ byte. */ \
+ if (tree_low_cst (DECL_SIZE_UNIT (DECL), 1) == 0) \
+ assemble_zeros (1); \
} while (0)
-#define ASM_DECLARE_FUNCTION_NAME(FILE, NAME, DECL) \
+#define ASM_DECLARE_FUNCTION_NAME(FILE, NAME, DECL) \
do { \
- const char *xname = NAME; \
- if (GET_CODE (XEXP (DECL_RTL (DECL), 0)) != SYMBOL_REF) \
- xname = IDENTIFIER_POINTER (DECL_NAME (DECL)); \
- if ((TREE_STATIC (DECL) \
- && (!DECL_COMMON (DECL) || !TREE_PUBLIC (DECL))) \
- || DECL_INITIAL (DECL)) \
- machopic_define_name (xname); \
- if ((TREE_STATIC (DECL) \
- && (!DECL_COMMON (DECL) || !TREE_PUBLIC (DECL))) \
- || DECL_INITIAL (DECL)) \
- ENCODE_SECTION_INFO (DECL); \
- ASM_OUTPUT_LABEL (FILE, xname); \
- /* Avoid generating stubs for functions we've just defined by \
- outputting any required stub name label now. */ \
- machopic_output_possible_stub_label (FILE, xname); \
+ const char *xname = NAME; \
+ if (GET_CODE (XEXP (DECL_RTL (DECL), 0)) != SYMBOL_REF) \
+ xname = IDENTIFIER_POINTER (DECL_NAME (DECL)); \
+ if (! DECL_WEAK (DECL) \
+ && ((TREE_STATIC (DECL) \
+ && (!DECL_COMMON (DECL) || !TREE_PUBLIC (DECL))) \
+ || DECL_INITIAL (DECL))) \
+ machopic_define_symbol (DECL_RTL (DECL)); \
+ if ((TREE_STATIC (DECL) \
+ && (!DECL_COMMON (DECL) || !TREE_PUBLIC (DECL))) \
+ || DECL_INITIAL (DECL)) \
+ (* targetm.encode_section_info) (DECL, DECL_RTL (DECL), false); \
+ ASM_OUTPUT_LABEL (FILE, xname); \
+ } while (0)
+
+#define ASM_DECLARE_CONSTANT_NAME(FILE, NAME, EXP, SIZE) \
+ do { \
+ ASM_OUTPUT_LABEL (FILE, NAME); \
+ /* Darwin doesn't support zero-size objects, so give them a \
+ byte. */ \
+ if ((SIZE) == 0) \
+ assemble_zeros (1); \
} while (0)
/* Wrap new method names in quotes so the assembler doesn't gag.
Make Objective-C internal symbols local. */
#undef ASM_OUTPUT_LABELREF
-#define ASM_OUTPUT_LABELREF(FILE,NAME) \
- do { \
- STRIP_NAME_ENCODING (NAME, NAME); \
- if (NAME[0] == '&' || NAME[0] == '*') \
- { \
- int len = strlen (NAME); \
- if (len > 6 && !strcmp ("$stub", NAME + len - 5)) \
- machopic_validate_stub_or_non_lazy_ptr (NAME, 1); \
- else if (len > 7 && !strcmp ("$stub\"", NAME + len - 6)) \
- machopic_validate_stub_or_non_lazy_ptr (NAME, 1); \
- else if (len > 14 && !strcmp ("$non_lazy_ptr", NAME + len - 13)) \
- machopic_validate_stub_or_non_lazy_ptr (NAME, 0); \
- fputs (&NAME[1], FILE); \
- } \
- else if (NAME[0] == '+' || NAME[0] == '-') \
- fprintf (FILE, "\"%s\"", NAME); \
- else if (!strncmp (NAME, "_OBJC_", 6)) \
- fprintf (FILE, "L%s", NAME); \
- else if (!strncmp (NAME, ".objc_class_name_", 17)) \
- fprintf (FILE, "%s", NAME); \
- else \
- fprintf (FILE, "_%s", NAME); \
+#define ASM_OUTPUT_LABELREF(FILE,NAME) \
+ do { \
+ const char *xname = (NAME); \
+ if (! strcmp (xname, MACHOPIC_FUNCTION_BASE_NAME)) \
+ machopic_output_function_base_name(FILE); \
+ else if (xname[0] == '&' || xname[0] == '*') \
+ { \
+ int len = strlen (xname); \
+ if (len > 6 && !strcmp ("$stub", xname + len - 5)) \
+ machopic_validate_stub_or_non_lazy_ptr (xname); \
+ else if (len > 7 && !strcmp ("$stub\"", xname + len - 6)) \
+ machopic_validate_stub_or_non_lazy_ptr (xname); \
+ else if (len > 14 && !strcmp ("$non_lazy_ptr", xname + len - 13)) \
+ machopic_validate_stub_or_non_lazy_ptr (xname); \
+ else if (len > 15 && !strcmp ("$non_lazy_ptr\"", xname + len - 14)) \
+ machopic_validate_stub_or_non_lazy_ptr (xname); \
+ if (xname[1] != '"' && name_needs_quotes (&xname[1])) \
+ fprintf (FILE, "\"%s\"", &xname[1]); \
+ else \
+ 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 if (xname[0] != '"' && name_needs_quotes (xname)) \
+ fprintf (FILE, "\"%s\"", xname); \
+ else \
+ asm_fprintf (FILE, "%U%s", xname); \
} while (0)
+/* Output before executable code. */
+#undef TEXT_SECTION_ASM_OP
+#define TEXT_SECTION_ASM_OP "\t.text"
+
+/* Output before writable data. */
+
+#undef DATA_SECTION_ASM_OP
+#define DATA_SECTION_ASM_OP "\t.data"
+
#undef ALIGN_ASM_OP
#define ALIGN_ASM_OP ".align"
/* 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), ",%u,%u\n", (SIZE), floor_log2 ((ALIGN) / BITS_PER_UNIT)); \
- if ((DECL) && ((TREE_STATIC (DECL) \
- && (!DECL_COMMON (DECL) || !TREE_PUBLIC (DECL))) \
- || DECL_INITIAL (DECL))) \
- ENCODE_SECTION_INFO (DECL); \
- if ((DECL) && ((TREE_STATIC (DECL) \
- && (!DECL_COMMON (DECL) || !TREE_PUBLIC (DECL))) \
- || DECL_INITIAL (DECL))) \
- machopic_define_name (NAME); \
+#define ASM_OUTPUT_ALIGNED_DECL_LOCAL(FILE, DECL, NAME, SIZE, ALIGN) \
+ do { \
+ unsigned HOST_WIDE_INT _new_size = SIZE; \
+ fputs (".lcomm ", (FILE)); \
+ assemble_name ((FILE), (NAME)); \
+ if (_new_size == 0) _new_size = 1; \
+ fprintf ((FILE), ","HOST_WIDE_INT_PRINT_UNSIGNED",%u\n", _new_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); \
+ machopic_define_symbol (DECL_RTL (DECL)); \
+ } \
} while (0)
-/* Output nothing for #ident. */
-
-#undef ASM_OUTPUT_IDENT
-#define ASM_OUTPUT_IDENT(FILE, NAME)
-
-/* The maximum alignment which the object file format can support.
- For Mach-O, this is 2^15. */
+/* The maximum alignment which the object file format can support in
+ bits. For Mach-O, this is 2^15 bytes. */
#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 PARAMS ((void)); \
-void \
-FUNCTION () \
-{ \
- 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; \
- } \
-} \
-
-#define ALIAS_SECTION(enum_value, alias_name) \
-do { if (!strcmp (alias_name, name)) \
- section_alias[enum_value] = (alias ? get_identifier (alias) : 0); \
- } while (0)
-
-/* 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_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_picsymbol_stub, \
- in_darwin_exception, in_darwin_eh_frame, \
- num_sections
-
-#undef EXTRA_SECTION_FUNCTIONS
-#define EXTRA_SECTION_FUNCTIONS \
-static void objc_section_init PARAMS ((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) \
-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_picsymbol_stub_section, \
- in_machopic_picsymbol_stub, \
- ".picsymbol_stub", 0) \
-SECTION_FUNCTION (darwin_exception_section, \
- in_darwin_exception, \
- ".section __TEXT,__gcc_except_tab", 0) \
-SECTION_FUNCTION (darwin_eh_frame_section, \
- in_darwin_eh_frame, \
- ".section __TEXT,__eh_frame", 0) \
- \
-static void \
-objc_section_init () \
-{ \
- 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 (); \
- } \
-} \
-static tree section_alias[(int) num_sections]; \
-static void try_section_alias PARAMS ((void)); \
-static void try_section_alias () \
-{ \
- if (section_alias[in_section] && asm_out_file) \
- fprintf (asm_out_file, "%s\n", \
- IDENTIFIER_POINTER (section_alias[in_section])); \
-} \
-
-#if 0
-static void alias_section PARAMS ((const char *, const char *)); \
-static void alias_section (name, alias) \
- const char *name, *alias; \
-{ \
- ALIAS_SECTION (in_data, "data"); \
- ALIAS_SECTION (in_text, "text"); \
- ALIAS_SECTION (in_const, "const"); \
- ALIAS_SECTION (in_const_data, "const_data"); \
- ALIAS_SECTION (in_cstring, "cstring"); \
- ALIAS_SECTION (in_literal4, "literal4"); \
- ALIAS_SECTION (in_literal8, "literal8"); \
-}
+#define MAX_OFILE_ALIGNMENT (0x8000 * 8)
+
+/* Declare the section variables. */
+#ifndef USED_FOR_TARGET
+enum darwin_section_enum {
+#define DEF_SECTION(NAME, FLAGS, DIRECTIVE, OBJC) NAME,
+#include "darwin-sections.def"
+#undef DEF_SECTION
+ NUM_DARWIN_SECTIONS
+};
+extern GTY(()) section * darwin_sections[NUM_DARWIN_SECTIONS];
#endif
-#undef READONLY_DATA_SECTION
-#define READONLY_DATA_SECTION const_section
-
-#undef SELECT_SECTION
-#define SELECT_SECTION(exp,reloc,align) \
- do \
- { \
- if (TREE_CODE (exp) == STRING_CST) \
- { \
- if (flag_writable_strings) \
- data_section (); \
- else if (TREE_STRING_LENGTH (exp) != \
- strlen (TREE_STRING_POINTER (exp)) + 1) \
- readonly_data_section (); \
- else \
- cstring_section (); \
- } \
- else if (TREE_CODE (exp) == INTEGER_CST \
- || TREE_CODE (exp) == REAL_CST) \
- { \
- tree size = TYPE_SIZE (TREE_TYPE (exp)); \
- \
- if (TREE_CODE (size) == INTEGER_CST && \
- TREE_INT_CST_LOW (size) == 4 && \
- TREE_INT_CST_HIGH (size) == 0) \
- literal4_section (); \
- else if (TREE_CODE (size) == INTEGER_CST && \
- TREE_INT_CST_LOW (size) == 8 && \
- TREE_INT_CST_HIGH (size) == 0) \
- literal8_section (); \
- else \
- readonly_data_section (); \
- } \
- else if (TREE_CODE (exp) == CONSTRUCTOR \
- && TREE_TYPE (exp) \
- && TREE_CODE (TREE_TYPE (exp)) == RECORD_TYPE \
- && TYPE_NAME (TREE_TYPE (exp))) \
- { \
- tree name = TYPE_NAME (TREE_TYPE (exp)); \
- if (TREE_CODE (name) == TYPE_DECL) \
- name = DECL_NAME (name); \
- if (!strcmp (IDENTIFIER_POINTER (name), "NSConstantString")) \
- objc_constant_string_object_section (); \
- else if (!strcmp (IDENTIFIER_POINTER (name), "NXConstantString")) \
- objc_string_object_section (); \
- else if (TREE_READONLY (exp) || TREE_CONSTANT (exp)) \
- { \
- if (TREE_SIDE_EFFECTS (exp) || flag_pic && reloc) \
- const_data_section (); \
- else \
- readonly_data_section (); \
- } \
- else \
- data_section (); \
- } \
- else if (TREE_CODE (exp) == VAR_DECL && \
- DECL_NAME (exp) && \
- TREE_CODE (DECL_NAME (exp)) == IDENTIFIER_NODE && \
- IDENTIFIER_POINTER (DECL_NAME (exp)) && \
- !strncmp (IDENTIFIER_POINTER (DECL_NAME (exp)), "_OBJC_", 6)) \
- { \
- const char *name = IDENTIFIER_POINTER (DECL_NAME (exp)); \
- \
- if (!strncmp (name, "_OBJC_CLASS_METHODS_", 20)) \
- objc_cls_meth_section (); \
- else if (!strncmp (name, "_OBJC_INSTANCE_METHODS_", 23)) \
- objc_inst_meth_section (); \
- else if (!strncmp (name, "_OBJC_CATEGORY_CLASS_METHODS_", 20)) \
- objc_cat_cls_meth_section (); \
- else if (!strncmp (name, "_OBJC_CATEGORY_INSTANCE_METHODS_", 23)) \
- objc_cat_inst_meth_section (); \
- else if (!strncmp (name, "_OBJC_CLASS_VARIABLES_", 22)) \
- objc_class_vars_section (); \
- else if (!strncmp (name, "_OBJC_INSTANCE_VARIABLES_", 25)) \
- objc_instance_vars_section (); \
- else if (!strncmp (name, "_OBJC_CLASS_PROTOCOLS_", 22)) \
- objc_cat_cls_meth_section (); \
- else if (!strncmp (name, "_OBJC_CLASS_NAME_", 17)) \
- objc_class_names_section (); \
- else if (!strncmp (name, "_OBJC_METH_VAR_NAME_", 20)) \
- objc_meth_var_names_section (); \
- else if (!strncmp (name, "_OBJC_METH_VAR_TYPE_", 20)) \
- objc_meth_var_types_section (); \
- else if (!strncmp (name, "_OBJC_CLASS_REFERENCES", 22)) \
- objc_cls_refs_section (); \
- else if (!strncmp (name, "_OBJC_CLASS_", 12)) \
- objc_class_section (); \
- else if (!strncmp (name, "_OBJC_METACLASS_", 16)) \
- objc_meta_class_section (); \
- else if (!strncmp (name, "_OBJC_CATEGORY_", 15)) \
- objc_category_section (); \
- else if (!strncmp (name, "_OBJC_SELECTOR_REFERENCES", 25)) \
- objc_selector_refs_section (); \
- else if (!strncmp (name, "_OBJC_SELECTOR_FIXUP", 20)) \
- objc_selector_fixup_section (); \
- else if (!strncmp (name, "_OBJC_SYMBOLS", 13)) \
- objc_symbols_section (); \
- else if (!strncmp (name, "_OBJC_MODULES", 13)) \
- objc_module_info_section (); \
- else if (!strncmp (name, "_OBJC_PROTOCOL_INSTANCE_METHODS_", 32)) \
- objc_cat_inst_meth_section (); \
- else if (!strncmp (name, "_OBJC_PROTOCOL_CLASS_METHODS_", 29)) \
- objc_cat_cls_meth_section (); \
- else if (!strncmp (name, "_OBJC_PROTOCOL_REFS_", 20)) \
- objc_cat_cls_meth_section (); \
- else if (!strncmp (name, "_OBJC_PROTOCOL_", 15)) \
- objc_protocol_section (); \
- else if ((TREE_READONLY (exp) || TREE_CONSTANT (exp)) \
- && !TREE_SIDE_EFFECTS (exp)) \
- { if (flag_pic && reloc ) const_data_section (); \
- else readonly_data_section (); } \
- else \
- data_section (); \
- } \
- else if (TREE_READONLY (exp) || TREE_CONSTANT (exp)) \
- { \
- if (TREE_SIDE_EFFECTS (exp) || flag_pic && reloc) \
- const_data_section (); \
- else \
- readonly_data_section (); \
- } \
- else \
- data_section (); \
- try_section_alias (); \
- } \
- while (0)
-
-/* This can be called with address expressions as "rtx".
- They must go in "const". */
-#undef SELECT_RTX_SECTION
-#define SELECT_RTX_SECTION(mode, rtx, align) \
- do \
- { \
- if (GET_MODE_SIZE (mode) == 8) \
- literal8_section (); \
- else if (GET_MODE_SIZE (mode) == 4 \
- && (GET_CODE (rtx) == CONST_INT \
- || GET_CODE (rtx) == CONST_DOUBLE)) \
- literal4_section (); \
- else \
- const_section (); \
- } \
- while (0)
+#undef TARGET_ASM_SELECT_SECTION
+#define TARGET_ASM_SELECT_SECTION machopic_select_section
+#define USE_SELECT_SECTION_FOR_FUNCTIONS
+
+#undef TARGET_ASM_SELECT_RTX_SECTION
+#define TARGET_ASM_SELECT_RTX_SECTION machopic_select_rtx_section
+#undef TARGET_ASM_UNIQUE_SECTION
+#define TARGET_ASM_UNIQUE_SECTION darwin_unique_section
+#undef TARGET_ASM_FUNCTION_RODATA_SECTION
+#define TARGET_ASM_FUNCTION_RODATA_SECTION default_no_function_rodata_section
+#undef TARGET_ASM_RELOC_RW_MASK
+#define TARGET_ASM_RELOC_RW_MASK machopic_reloc_rw_mask
+
#define ASM_DECLARE_UNRESOLVED_REFERENCE(FILE,NAME) \
- do { \
+ do { \
if (FILE) { \
- if (flag_pic) \
+ if (MACHOPIC_INDIRECT) \
fprintf (FILE, "\t.lazy_reference "); \
else \
fprintf (FILE, "\t.reference "); \
do { \
if (FILE) { \
fprintf (FILE, "\t"); \
- assemble_name (FILE, NAME); \
+ assemble_name (FILE, NAME); \
fprintf (FILE, "=0\n"); \
- assemble_global (NAME); \
+ (*targetm.asm_out.globalize_label) (FILE, NAME); \
} \
} while (0)
-#undef ASM_GLOBALIZE_LABEL
-#define ASM_GLOBALIZE_LABEL(FILE,NAME) \
- do { const char *const _x = (NAME); if (!!strncmp (_x, "_OBJC_", 6)) { \
- (fputs (".globl ", FILE), assemble_name (FILE, _x), fputs ("\n", FILE)); \
- }} 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
+
+/* Extra attributes for Darwin. */
+#define SUBTARGET_ATTRIBUTE_TABLE \
+ /* { name, min_len, max_len, decl_req, type_req, fn_type_req, handler } */ \
+ { "apple_kext_compatibility", 0, 0, false, true, false, \
+ darwin_handle_kext_attribute }, \
+ { "weak_import", 0, 0, true, false, false, \
+ darwin_handle_weak_import_attribute }
#undef ASM_GENERATE_INTERNAL_LABEL
#define ASM_GENERATE_INTERNAL_LABEL(LABEL,PREFIX,NUM) \
sprintf (LABEL, "*%s%ld", PREFIX, (long)(NUM))
-/* This is how to output an internal numbered label where PREFIX is
- the class of label and NUM is the number within the class. */
+#undef TARGET_ASM_MARK_DECL_PRESERVED
+#define TARGET_ASM_MARK_DECL_PRESERVED darwin_mark_decl_preserved
-#undef ASM_OUTPUT_INTERNAL_LABEL
-#define ASM_OUTPUT_INTERNAL_LABEL(FILE,PREFIX,NUM) \
- fprintf (FILE, "%s%d:\n", PREFIX, NUM)
+/* Set on a symbol with SYMBOL_FLAG_FUNCTION or
+ MACHO_SYMBOL_FLAG_VARIABLE to indicate that the function or
+ variable has been defined in this translation unit.
+ When porting Mach-O to new architectures you need to make
+ sure these aren't clobbered by the backend. */
-/* Since we have a separate readonly data section, define this so that
- jump tables end up in text rather than data. */
+#define MACHO_SYMBOL_FLAG_VARIABLE (SYMBOL_FLAG_MACH_DEP)
+#define MACHO_SYMBOL_FLAG_DEFINED ((SYMBOL_FLAG_MACH_DEP) << 1)
-#ifndef JUMP_TABLES_IN_TEXT_SECTION
-#define JUMP_TABLES_IN_TEXT_SECTION 1
-#endif
+/* Set on a symbol to indicate when fix-and-continue style code
+ generation is being used and the symbol refers to a static symbol
+ that should be rebound from new instances of a translation unit to
+ the original instance of the data. */
+
+#define MACHO_SYMBOL_STATIC ((SYMBOL_FLAG_MACH_DEP) << 2)
/* Symbolic names for various things we might know about a symbol. */
/* Macros defining the various PIC cases. */
-#define MACHOPIC_INDIRECT (flag_pic)
-#define MACHOPIC_JUST_INDIRECT (flag_pic == 1)
-#define MACHOPIC_PURE (flag_pic == 2)
-
-#define ENCODE_SECTION_INFO(DECL) \
- darwin_encode_section_info (DECL)
-
-/* Be conservative and always redo the encoding. */
+#define MACHO_DYNAMIC_NO_PIC_P (TARGET_DYNAMIC_NO_PIC)
+#define MACHOPIC_INDIRECT (flag_pic || MACHO_DYNAMIC_NO_PIC_P)
+#define MACHOPIC_JUST_INDIRECT (MACHO_DYNAMIC_NO_PIC_P)
+#define MACHOPIC_PURE (flag_pic && ! MACHO_DYNAMIC_NO_PIC_P)
-#define REDO_SECTION_INFO_P(DECL) (1)
-
-#define STRIP_NAME_ENCODING(VAR,SYMBOL_NAME) \
- ((VAR) = ((SYMBOL_NAME[0] == '!') ? (SYMBOL_NAME) + 4 : (SYMBOL_NAME)))
+#undef TARGET_ENCODE_SECTION_INFO
+#define TARGET_ENCODE_SECTION_INFO darwin_encode_section_info
+#undef TARGET_STRIP_NAME_ENCODING
+#define TARGET_STRIP_NAME_ENCODING default_strip_name_encoding
#define GEN_BINDER_NAME_FOR_STUB(BUF,STUB,STUB_LENGTH) \
do { \
#define GEN_LAZY_PTR_NAME_FOR_SYMBOL(BUF,SYMBOL,SYMBOL_LENGTH) \
do { \
- const char *symbol_ = (SYMBOL); \
+ const char *symbol_ = (SYMBOL); \
char *buffer_ = (BUF); \
- STRIP_NAME_ENCODING (symbol_, symbol_); \
if (symbol_[0] == '"') \
{ \
- strcpy (buffer_, "\"L"); \
+ strcpy (buffer_, "\"L"); \
strcpy (buffer_ + 2, symbol_ + 1); \
strcpy (buffer_ + (SYMBOL_LENGTH), "$lazy_ptr\""); \
} \
} \
} while (0)
-#define TARGET_ASM_EXCEPTION_SECTION darwin_exception_section
+#define EH_FRAME_SECTION_NAME "__TEXT"
+#define EH_FRAME_SECTION_ATTR ",coalesced,no_toc+strip_static_syms+live_support"
+
+/* Java runtime class list. */
+#define JCR_SECTION_NAME "__DATA,jcr,regular,no_dead_strip"
-#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) == 1 || (GLOBAL) == 0) ? DW_EH_PE_pcrel : DW_EH_PE_absptr)
-
-#define REGISTER_TARGET_PRAGMAS(PFILE) \
- do { \
- cpp_register_pragma (PFILE, 0, "mark", darwin_pragma_ignore); \
- cpp_register_pragma (PFILE, 0, "options", darwin_pragma_options); \
- cpp_register_pragma (PFILE, 0, "segment", darwin_pragma_ignore); \
- cpp_register_pragma (PFILE, 0, "unused", darwin_pragma_unused); \
+ (((CODE) == 2 && (GLOBAL) == 1) \
+ ? (DW_EH_PE_pcrel | DW_EH_PE_indirect | DW_EH_PE_sdata4) : \
+ ((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 ASM_OUTPUT_DWARF_OFFSET(FILE,SIZE,LABEL,BASE) \
+ darwin_asm_output_dwarf_offset (FILE, SIZE, LABEL, BASE)
+
+#define ASM_MAYBE_OUTPUT_ENCODED_ADDR_RTX(ASM_OUT_FILE, ENCODING, SIZE, ADDR, DONE) \
+ if (ENCODING == ASM_PREFERRED_EH_DATA_FORMAT (2, 1)) { \
+ darwin_non_lazy_pcrel (ASM_OUT_FILE, ADDR); \
+ goto DONE; \
+ }
+
+/* Experimentally, putting jump tables in text is faster on SPEC.
+ Also this is needed for correctness for coalesced functions. */
+
+#ifndef JUMP_TABLES_IN_TEXT_SECTION
+#define JUMP_TABLES_IN_TEXT_SECTION 1
+#endif
+
+#define TARGET_TERMINATE_DW2_EH_FRAME_INFO false
+
+#define TARGET_ASM_INIT_SECTIONS darwin_init_sections
+#undef TARGET_ASM_NAMED_SECTION
+#define TARGET_ASM_NAMED_SECTION darwin_asm_named_section
+
+/* Handle pragma weak and pragma pack. */
+#define HANDLE_SYSV_PRAGMA 1
+
+#define HANDLE_PRAGMA_PACK_PUSH_POP 1
+
+#define DARWIN_REGISTER_TARGET_PRAGMAS() \
+ do { \
+ if (!flag_preprocess_only) \
+ cpp_register_pragma (parse_in, NULL, "mark", \
+ darwin_pragma_ignore, false); \
+ c_register_pragma (0, "options", darwin_pragma_options); \
+ c_register_pragma (0, "segment", darwin_pragma_ignore); \
+ c_register_pragma (0, "unused", darwin_pragma_unused); \
+ c_register_pragma (0, "ms_struct", darwin_pragma_ms_struct); \
} while (0)
+
+#undef ASM_APP_ON
+#define ASM_APP_ON ""
+#undef ASM_APP_OFF
+#define ASM_APP_OFF ""
+
+void darwin_register_frameworks (const char *, const char *, int);
+void darwin_register_objc_includes (const char *, const char *, int);
+#define TARGET_EXTRA_PRE_INCLUDES darwin_register_objc_includes
+#define TARGET_EXTRA_INCLUDES darwin_register_frameworks
+
+void add_framework_path (char *);
+#define TARGET_OPTF add_framework_path
+
+#define TARGET_POSIX_IO
+
+/* All new versions of Darwin have C99 functions. */
+
+#define TARGET_C99_FUNCTIONS 1
+
+#define WINT_TYPE "int"
+
+/* Every program on darwin links against libSystem which contains the pthread
+ routines, so there's no need to explicitly call out when doing threaded
+ work. */
+
+#undef GOMP_SELF_SPECS
+#define GOMP_SELF_SPECS ""
+
+/* Darwin can't support anchors until we can cope with the adjustments
+ to size that ASM_DECLARE_OBJECT_NAME and ASM_DECLARE_CONSTANT_NAME
+ when outputting members of an anchor block and the linker can be
+ taught to keep them together or we find some other suitable
+ code-gen technique. */
+
+#if 0
+#define TARGET_ASM_OUTPUT_ANCHOR darwin_asm_output_anchor
+#else
+#define TARGET_ASM_OUTPUT_ANCHOR NULL
+#endif
+
+/* Attempt to turn on execute permission for the stack. This may be
+ used by INITIALIZE_TRAMPOLINE of the target needs it (that is,
+ if the target machine can change execute permissions on a page).
+
+ There is no way to query the execute permission of the stack, so
+ we always issue the mprotect() call.
+
+ Unfortunately it is not possible to make this namespace-clean.
+
+ Also note that no errors should be emitted by this code; it is
+ considered dangerous for library calls to send messages to
+ stdout/stderr. */
+
+#define ENABLE_EXECUTE_STACK \
+extern void __enable_execute_stack (void *); \
+void \
+__enable_execute_stack (void *addr) \
+{ \
+ extern int mprotect (void *, size_t, int); \
+ extern int getpagesize (void); \
+ static int size; \
+ static long mask; \
+ \
+ char *page, *end; \
+ \
+ if (size == 0) \
+ { \
+ size = getpagesize(); \
+ mask = ~((long) size - 1); \
+ } \
+ \
+ page = (char *) (((long) addr) & mask); \
+ end = (char *) ((((long) (addr + (TARGET_64BIT ? 48 : 40))) & mask) + size); \
+ \
+ /* 7 == PROT_READ | PROT_WRITE | PROT_EXEC */ \
+ (void) mprotect (page, end - page, 7); \
+}
+
+/* For Apple KEXTs, we make the constructors return this to match gcc
+ 2.95. */
+#define TARGET_CXX_CDTOR_RETURNS_THIS (darwin_kextabi_p)
+extern int flag_mkernel;
+extern int flag_apple_kext;
+#define TARGET_KEXTABI flag_apple_kext
+
+#define TARGET_HAS_TARGETCM 1
+
+#ifndef CROSS_DIRECTORY_STRUCTURE
+extern void darwin_default_min_version (int * argc, char *** argv);
+#define GCC_DRIVER_HOST_INITIALIZATION \
+ darwin_default_min_version (&argc, &argv)
+#endif /* CROSS_DIRECTORY_STRUCTURE */
+
+/* The Apple assembler and linker do not support constructor priorities. */
+#undef SUPPORTS_INIT_PRIORITY
+#define SUPPORTS_INIT_PRIORITY 0
+
+#endif /* CONFIG_DARWIN_H */
projects / msp430-gcc.git / blobdiff