/* Target definitions for Darwin (Mac OS X) systems.
Copyright (C) 1989, 1990, 1991, 1992, 1993, 2000, 2001, 2002, 2003, 2004,
- 2005
+ 2005, 2006, 2007, 2008, 2009
Free Software Foundation, Inc.
Contributed by Apple Computer Inc.
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.
GCC is distributed in the hope that it will be useful,
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
-You should have received a copy of the GNU General Public License
-along with GCC; see the file COPYING. If not, write to
-the Free Software Foundation, 51 Franklin Street, Fifth Floor,
-Boston, MA 02110-1301, USA. */
+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
#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 ""
#undef WCHAR_TYPE_SIZE
#define WCHAR_TYPE_SIZE 32
+#define INT8_TYPE "signed char"
+#define INT16_TYPE "short int"
+#define INT32_TYPE "int"
+#define INT64_TYPE "long long int"
+#define UINT8_TYPE "unsigned char"
+#define UINT16_TYPE "short unsigned int"
+#define UINT32_TYPE "unsigned int"
+#define UINT64_TYPE "long long unsigned int"
+
+#define INT_LEAST8_TYPE "signed char"
+#define INT_LEAST16_TYPE "short int"
+#define INT_LEAST32_TYPE "int"
+#define INT_LEAST64_TYPE "long long int"
+#define UINT_LEAST8_TYPE "unsigned char"
+#define UINT_LEAST16_TYPE "short unsigned int"
+#define UINT_LEAST32_TYPE "unsigned int"
+#define UINT_LEAST64_TYPE "long long unsigned int"
+
+#define INT_FAST8_TYPE "signed char"
+#define INT_FAST16_TYPE "short int"
+#define INT_FAST32_TYPE "int"
+#define INT_FAST64_TYPE "long long int"
+#define UINT_FAST8_TYPE "unsigned char"
+#define UINT_FAST16_TYPE "short unsigned int"
+#define UINT_FAST32_TYPE "unsigned int"
+#define UINT_FAST64_TYPE "long long unsigned int"
+
+#define INTPTR_TYPE "long int"
+#define UINTPTR_TYPE "long unsigned int"
+
+#define SIG_ATOMIC_TYPE "int"
+
/* Default to using the NeXT-style runtime, since that's what is
pre-installed on Darwin systems. */
#undef DEFAULT_PCC_STRUCT_RETURN
#define DEFAULT_PCC_STRUCT_RETURN 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
{ "-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", "-Zseg_addr_table_filename" }, \
+ { "-seg_addr_table_filename", "-Zfn_seg_addr_table_filename" }, \
+ { "-umbrella", "-Zumbrella" }, \
+ { "-fapple-kext", "-fapple-kext -static -Wa,-static" }, \
{ "-filelist", "-Xlinker -filelist -Xlinker" }, \
- { "-framework", "-Xlinker -framework -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 SUBTARGET_OS_CPP_BUILTINS() \
- do \
- { \
- if (flag_pic) \
- builtin_define ("__PIC__"); \
- } \
- while (0)
+#define SUBSUBTARGET_OVERRIDE_OPTIONS \
+ do { \
+ darwin_override_options (); \
+ } while (0)
/* These compiler options take n arguments. */
!strcmp (STR, "Zsegs_read_only_addr") ? 1 : \
!strcmp (STR, "Zsegs_read_write_addr") ? 1 : \
!strcmp (STR, "Zseg_addr_table") ? 1 : \
- !strcmp (STR, "Zseg_addr_table_filename") ?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, "umbrella") ? 1 : \
+ !strcmp (STR, "Zumbrella") ? 1 : \
!strcmp (STR, "undefined") ? 1 : \
!strcmp (STR, "Zunexported_symbols_list") ? 1 : \
!strcmp (STR, "Zweak_reference_mismatches") ? 1 : \
!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)
+
/* Machine dependent cpp options. Don't add more options here, add
them to darwin_cpp_builtins in darwin-c.c. */
#undef CPP_SPEC
-#define CPP_SPEC "%{static:%{!dynamic:-D__STATIC__}}%{!static:-D__DYNAMIC__}"
+#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
specifying the handling of options understood by generic Unix
linkers, and for positional arguments like libraries. */
#define LINK_COMMAND_SPEC "\
-%{!fdump=*:%{!fsyntax-only:%{!precomp:%{!c:%{!M:%{!MM:%{!E:%{!S:\
- %{!Zdynamiclib:%(linker)}%{Zdynamiclib:/usr/bin/libtool} \
- %l %X %{d} %{s} %{t} %{Z} \
- %{!Zdynamiclib:%{A} %{e*} %{m} %{N} %{n} %{r} %{u*} %{x} %{z}} \
- %{@:-o %f%u.out}%{!@:%{o*}%{!o:-o a.out}} \
- %{!Zdynamiclib:%{!A:%{!nostdlib:%{!nostartfiles:%S}}}} \
- %{L*} %(link_libgcc) %o %{fprofile-arcs|fprofile-generate|coverage:-lgcov} \
+%{!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*} }}}}}}}}"
+ %{!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
/* Please keep the random linker options in alphabetical order (modulo
- 'Z' and 'no' prefixes). Options that can only go to one of libtool
- or ld must be listed twice, under both !Zdynamiclib and
- Zdynamiclib, with one of the cases reporting an error. */
-/* 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. */
+ '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)} \
%{keep_private_externs} \
%{private_bundle} \
} \
- %{Zdynamiclib: \
+ %{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*} \
- %{current_version*} \
- %{Zforce_cpusubtype_ALL:-arch_only %(darwin_arch)} \
- %{!Zforce_cpusubtype_ALL: -arch_only %(darwin_subarch)} \
+ %{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*:-install_name %*} \
+ %{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}%{Zdynamiclib:%{!Zall_load:-noall_load}} \
+ %{Zall_load:-all_load} \
%{Zallowable_client*:-allowable_client %*} \
%{Zbind_at_load:-bind_at_load} \
%{Zarch_errors_fatal:-arch_errors_fatal} \
%{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*} \
%{Zsegs_read_only_addr*:-segs_read_only_addr %*} \
%{Zsegs_read_write_addr*:-segs_read_write_addr %*} \
%{Zseg_addr_table*: -seg_addr_table %*} \
- %{Zseg_addr_table_filename*:-seg_addr_table_filename %*} \
+ %{Zfn_seg_addr_table_filename*:-seg_addr_table_filename %*} \
%{sub_library*} %{sub_umbrella*} \
- %{isysroot*:-syslibroot %*} \
+ " LINK_SYSROOT_SPEC " \
%{twolevel_namespace} %{twolevel_namespace_hints} \
- %{umbrella*} \
+ %{Zumbrella*: -umbrella %*} \
%{undefined*} \
%{Zunexported_symbols_list*:-unexported_symbols_list %*} \
%{Zweak_reference_mismatches*:-weak_reference_mismatches %*} \
#define LIB_SPEC "%{!static:-lSystem}"
-/* -dynamiclib implies -shared-libgcc just like -shared would on linux. */
-#define REAL_LIBGCC_SPEC \
- "%{static|static-libgcc:-lgcc -lgcc_eh}\
- %{!static:%{!static-libgcc:\
- %{!Zdynamiclib:%{!shared-libgcc:-lgcc -lgcc_eh}\
- %{shared-libgcc:-lgcc_s -lgcc}} %{Zdynamiclib:-lgcc_s -lgcc}}}"
-
-/* We specify crt0.o as -lcrt0.o so that ld will search the library path. */
-/* We don't want anything to do with crt2.o in the 64-bit case;
- testing the PowerPC-specific -m64 flag here is a little irregular,
- but it's overkill to make copies of this spec for each target
- arch. */
+/* 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) \
+ %:version-compare(!> 10.5 mmacosx-version-min= -lgcc_ext.10.4) \
+ %:version-compare(>= 10.5 mmacosx-version-min= -lgcc_ext.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) \
+ %:version-compare(!> 10.5 mmacosx-version-min= -lgcc_ext.10.4) \
+ %:version-compare(>= 10.5 mmacosx-version-min= -lgcc_ext.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:%{Zbundle:%{!static:-lbundle1.o}} \
- %{!Zbundle:%{pg:%{static:-lgcrt0.o} \
- %{!static:%{object:-lgcrt0.o} \
- %{!object:%{preload:-lgcrt0.o} \
- %{!preload:-lgcrt1.o %{!m64: crt2.o%s}}}}} \
- %{!pg:%{static:-lcrt0.o} \
- %{!static:%{object:-lcrt0.o} \
- %{!object:%{preload:-lcrt0.o} \
- %{!preload:-lcrt1.o %{!m64: crt2.o%s}}}}}}}"
+#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 use Dbx symbol format. */
+/* We still allow output of STABS. */
#define DBX_DEBUGGING_INFO 1
-/* Also enable Dwarf 2 as an option. */
-#define DWARF2_DEBUGGING_INFO
+#define DWARF2_DEBUGGING_INFO 1
#define PREFERRED_DEBUGGING_TYPE DBX_DEBUG
-#define DEBUG_FRAME_SECTION "__DWARFA,__debug_frame,coalesced,no_toc+strip_static_syms"
-#define DEBUG_INFO_SECTION "__DWARFA,__debug_info"
-#define DEBUG_ABBREV_SECTION "__DWARFA,__debug_abbrev"
-#define DEBUG_ARANGES_SECTION "__DWARFA,__debug_aranges"
-#define DEBUG_MACINFO_SECTION "__DWARFA,__debug_macinfo"
-#define DEBUG_LINE_SECTION "__DWARFA,__debug_line"
-#define DEBUG_LOC_SECTION "__DWARFA,__debug_loc"
-#define DEBUG_PUBNAMES_SECTION "__DWARFA,__debug_pubnames"
-#define DEBUG_STR_SECTION "__DWARFA,__debug_str"
-#define DEBUG_RANGES_SECTION "__DWARFA,__debug_ranges"
+#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"
/* When generating stabs debugging, use N_BINCL entries. */
#undef TARGET_WEAK_NOT_IN_ARCHIVE_TOC
#define TARGET_WEAK_NOT_IN_ARCHIVE_TOC 1
+/* 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
+
+/* 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
+
/* 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. */
+ 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 "EH_frame"
+#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 1
#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
} while (0)
/* Wrap new method names in quotes so the assembler doesn't gag.
- Make Objective-C internal symbols local. */
+ Make Objective-C internal symbols local and in doing this, we need
+ to accommodate the name mangling done by c++ on file scope locals. */
+
+
+int darwin_label_is_anonymous_local_objc_name (const char *name);
#undef ASM_OUTPUT_LABELREF
#define ASM_OUTPUT_LABELREF(FILE,NAME) \
do { \
const char *xname = (NAME); \
- if (! strcmp (xname, "<pic base>")) \
+ if (! strcmp (xname, MACHOPIC_FUNCTION_BASE_NAME)) \
machopic_output_function_base_name(FILE); \
else if (xname[0] == '&' || xname[0] == '*') \
{ \
} \
else if (xname[0] == '+' || xname[0] == '-') \
fprintf (FILE, "\"%s\"", xname); \
- else if (!strncmp (xname, "_OBJC_", 6)) \
+ else if (darwin_label_is_anonymous_local_objc_name (xname)) \
fprintf (FILE, "L%s", xname); \
else if (!strncmp (xname, ".objc_class_name_", 17)) \
fprintf (FILE, "%s", xname); \
} \
} while (0)
-/* 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 (void); \
-void \
-FUNCTION (void) \
-{ \
- if (in_section != SECTION) \
- { \
- if (OBJC) \
- objc_section_init (); \
- if (asm_out_file) \
- fputs ("\t" DIRECTIVE "\n", asm_out_file); \
- in_section = SECTION; \
- if ((SECTION == in_text_coal) \
- || (SECTION == in_text_unlikely) \
- || (SECTION == in_text_unlikely_coal)) \
- last_text_section = SECTION; \
- } \
-} \
-
-/* Darwin uses many types of special sections. */
-
-#undef EXTRA_SECTIONS
-#define EXTRA_SECTIONS \
- in_text_coal, in_text_unlikely, in_text_unlikely_coal, \
- in_const, in_const_data, in_cstring, in_literal4, in_literal8, \
- in_const_coal, in_const_data_coal, in_data_coal, \
- 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 (text_coal_section, \
- in_text_coal, \
- ".section __TEXT,__textcoal_nt,coalesced," \
- "pure_instructions", 0) \
-SECTION_FUNCTION (text_unlikely_coal_section, \
- in_text_unlikely_coal, \
- ".section __TEXT,__text_unlikely_coal," \
- "coalesced,pure_instructions", 0) \
-SECTION_FUNCTION (const_section, \
- in_const, \
- ".const", 0) \
-SECTION_FUNCTION (const_coal_section, \
- in_const_coal, \
- ".section __TEXT,__const_coal,coalesced", 0) \
-SECTION_FUNCTION (const_data_section, \
- in_const_data, \
- ".const_data", 0) \
-SECTION_FUNCTION (const_data_coal_section, \
- in_const_data_coal, \
- ".section __DATA,__const_coal,coalesced", 0) \
-SECTION_FUNCTION (data_coal_section, \
- in_data_coal, \
- ".section __DATA,__datacoal_nt,coalesced", 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, regular, no_dead_strip", 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, regular, " \
- "no_dead_strip", 1) \
-/* Fix-and-Continue image marker. */ \
-SECTION_FUNCTION (objc_image_info_section, \
- in_objc_image_info, \
- ".section __OBJC, __image_info, regular, " \
- "no_dead_strip", 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 " EH_FRAME_SECTION_NAME ",__eh_frame" \
- EH_FRAME_SECTION_ATTR, 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
+#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 TARGET_ASM_SELECT_SECTION
#define TARGET_ASM_SELECT_SECTION machopic_select_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) \
/* 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 }
/* 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. */
+ 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. */
#define MACHO_SYMBOL_FLAG_VARIABLE (SYMBOL_FLAG_MACH_DEP)
#define MACHO_SYMBOL_FLAG_DEFINED ((SYMBOL_FLAG_MACH_DEP) << 1)
#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)
+#define MACHOPIC_JUST_INDIRECT (MACHO_DYNAMIC_NO_PIC_P)
+#define MACHOPIC_PURE (flag_pic && ! MACHO_DYNAMIC_NO_PIC_P)
#undef TARGET_ENCODE_SECTION_INFO
#define TARGET_ENCODE_SECTION_INFO darwin_encode_section_info
} \
} while (0)
-#define TARGET_ASM_EXCEPTION_SECTION darwin_exception_section
-
-#define TARGET_ASM_EH_FRAME_SECTION darwin_eh_frame_section
-
#define EH_FRAME_SECTION_NAME "__TEXT"
#define EH_FRAME_SECTION_ATTR ",coalesced,no_toc+strip_static_syms+live_support"
#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); \
#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 { \
- c_register_pragma (0, "mark", darwin_pragma_ignore); \
+ 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 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 TARGET_TRAMPOLINE_INIT if 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 */
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