| /* Target definitions for Darwin (Mac OS X) systems. |
| Copyright (C) 1989-2015 Free Software Foundation, Inc. |
| Contributed by Apple Computer Inc. |
| |
| This file is part of GCC. |
| |
| GCC is free software; you can redistribute it and/or modify |
| it under the terms of the GNU General Public License as published by |
| the Free Software Foundation; either version 3, or (at your option) |
| any later version. |
| |
| GCC is distributed in the hope that it will be useful, |
| but WITHOUT ANY WARRANTY; without even the implied warranty of |
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| GNU General Public License for more details. |
| |
| 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 |
| basically a BSD user layer laid over a Mach kernel, then evolved |
| for many years (at NeXT) in parallel with other Unix systems. So |
| while the runtime is a somewhat idiosyncratic Mach-based thing, |
| other definitions look like they would for a BSD variant. */ |
| |
| /* Although NeXT ran on many different architectures, as of Jan 2001 |
| the only supported Darwin targets are PowerPC and x86. */ |
| |
| /* 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. */ |
| |
| #define DARWIN_X86 0 |
| #define DARWIN_PPC 0 |
| |
| /* 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. */ |
| |
| #define HAVE_ATEXIT |
| |
| /* Define an empty body for the function do_global_dtors() in libgcc2.c. */ |
| |
| #define DO_GLOBAL_DTORS_BODY |
| |
| /* The string value for __SIZE_TYPE__. */ |
| |
| #ifndef SIZE_TYPE |
| #define SIZE_TYPE "long unsigned int" |
| #endif |
| |
| /* Type used for ptrdiff_t, as a string used in a declaration. */ |
| |
| #undef PTRDIFF_TYPE |
| #define PTRDIFF_TYPE "int" |
| |
| /* wchar_t is int. */ |
| |
| #undef WCHAR_TYPE |
| #define WCHAR_TYPE "int" |
| #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. */ |
| |
| #define NEXT_OBJC_RUNTIME 1 |
| |
| /* Don't default to pcc-struct-return, because gcc is the only compiler, and |
| we want to retain compatibility with older gcc versions. */ |
| |
| #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; |
| |
| #define DRIVER_SELF_SPECS \ |
| "%{gfull:-g -fno-eliminate-unused-debug-symbols} %<gfull", \ |
| "%{gused:-g -feliminate-unused-debug-symbols} %<gused", \ |
| "%{fapple-kext|mkernel:-static}", \ |
| "%{shared:-Zdynamiclib} %<shared" |
| |
| #define DARWIN_CC1_SPEC \ |
| "%{findirect-virtual-calls: -fapple-kext} %<findirect-virtual-calls " \ |
| "%{fterminated-vtables: -fapple-kext} %<fterminated-vtables " \ |
| "%<filelist* %<framework*" |
| |
| #define SUBSUBTARGET_OVERRIDE_OPTIONS \ |
| do { \ |
| darwin_override_options (); \ |
| } while (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__}" \ |
| " %{pthread:-D_REENTRANT}" |
| |
| /* This is mostly a clone of the standard LINK_COMMAND_SPEC, plus |
| precomp, libtool, and fat build additions. |
| |
| 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_A \ |
| "%{!fdump=*:%{!fsyntax-only:%{!c:%{!M:%{!MM:%{!E:%{!S:\ |
| %(linker)" \ |
| LINK_PLUGIN_SPEC \ |
| "%{flto*:%<fcompare-debug*} \ |
| %{flto*} \ |
| %l " LINK_COMPRESS_DEBUG_SPEC \ |
| "%X %{s} %{t} %{Z} %{u*} \ |
| %{e*} %{r} \ |
| %{o*}%{!o:-o a.out} \ |
| %{!nostdlib:%{!nostartfiles:%S}} \ |
| %{L*} %(link_libgcc) %o %{fprofile-arcs|fprofile-generate*|coverage:-lgcov} \ |
| %{fopenacc|fopenmp|ftree-parallelize-loops=*: \ |
| %{static|static-libgcc|static-libstdc++|static-libgfortran: libgomp.a%s; : -lgomp } } \ |
| %{fgnu-tm: \ |
| %{static|static-libgcc|static-libstdc++|static-libgfortran: libitm.a%s; : -litm } } \ |
| %{!nostdlib:%{!nodefaultlibs:\ |
| %{%:sanitize(address): -lasan } \ |
| %{%:sanitize(undefined): -lubsan } \ |
| %(link_ssp) %(link_gcc_c_sequence)\ |
| }}\ |
| %{!nostdlib:%{!nostartfiles:%E}} %{T*} %{F*} }}}}}}}" |
| |
| #define DSYMUTIL "\ndsymutil" |
| |
| #define DSYMUTIL_SPEC \ |
| "%{!fdump=*:%{!fsyntax-only:%{!c:%{!M:%{!MM:%{!E:%{!S:\ |
| %{v} \ |
| %{gdwarf-2:%{!gstabs*:%{!g0: -idsym}}}\ |
| %{.c|.cc|.C|.cpp|.cp|.c++|.cxx|.CPP|.m|.mm: \ |
| %{gdwarf-2:%{!gstabs*:%{!g0: -dsym}}}}}}}}}}}" |
| |
| #define LINK_COMMAND_SPEC LINK_COMMAND_SPEC_A DSYMUTIL_SPEC |
| |
| /* Tell collect2 to run dsymutil for us as necessary. */ |
| #define COLLECT_RUN_DSYMUTIL 1 |
| |
| /* We only want one instance of %G, since libSystem (Darwin's -lc) does not depend |
| on libgcc. */ |
| #undef LINK_GCC_C_SEQUENCE_SPEC |
| #define LINK_GCC_C_SEQUENCE_SPEC "%G %L" |
| |
| #ifdef TARGET_SYSTEM_ROOT |
| #define LINK_SYSROOT_SPEC \ |
| "%{isysroot*:-syslibroot %*;:-syslibroot " TARGET_SYSTEM_ROOT "}" |
| #else |
| #define LINK_SYSROOT_SPEC "%{isysroot*:-syslibroot %*}" |
| #endif |
| |
| #define PIE_SPEC "%{fpie|pie|fPIE:}" |
| |
| /* 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} \ |
| %:remove-outfile(-ldl) \ |
| %:remove-outfile(-lm) \ |
| %:remove-outfile(-lpthread) \ |
| %{fgnu-runtime: %{static|static-libgcc: \ |
| %:replace-outfile(-lobjc libobjc-gnu.a%s); \ |
| :%:replace-outfile(-lobjc -lobjc-gnu ) } }\ |
| %{static|static-libgcc|static-libgfortran:%:replace-outfile(-lgfortran libgfortran.a%s)}\ |
| %{static|static-libgcc|static-libstdc++|static-libgfortran:%:replace-outfile(-lgomp libgomp.a%s)}\ |
| %{static|static-libgcc|static-libstdc++:%:replace-outfile(-lstdc++ libstdc++.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 %*} \ |
| " PIE_SPEC " \ |
| %{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} " |
| |
| |
| /* Machine dependent libraries. */ |
| |
| #define LIB_SPEC "%{!static:-lSystem}" |
| |
| /* 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 10.6 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 10.6 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: %(darwin_dylib1) %{fgnu-tm: -lcrttms.o}} \ |
| %{!Zdynamiclib:%{Zbundle:%{!static: \ |
| %:version-compare(< 10.6 mmacosx-version-min= -lbundle1.o) \ |
| %{fgnu-tm: -lcrttms.o}}} \ |
| %{!Zbundle:%{pg:%{static:-lgcrt0.o} \ |
| %{!static:%{object:-lgcrt0.o} \ |
| %{!object:%{preload:-lgcrt0.o} \ |
| %{!preload:-lgcrt1.o \ |
| %:version-compare(>= 10.8 mmacosx-version-min= -no_new_main) \ |
| %(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)}" |
| |
| /* We want a destructor last in the list. */ |
| #define TM_DESTRUCTOR "%{fgnu-tm: -lcrttme.o}" |
| #define ENDFILE_SPEC TM_DESTRUCTOR |
| |
| #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 10.6 mmacosx-version-min= -ldylib1.10.5.o)" |
| |
| #define DARWIN_CRT1_SPEC \ |
| "%:version-compare(!> 10.5 mmacosx-version-min= -lcrt1.o) \ |
| %:version-compare(>< 10.5 10.6 mmacosx-version-min= -lcrt1.10.5.o) \ |
| %:version-compare(>< 10.6 10.8 mmacosx-version-min= -lcrt1.10.6.o) \ |
| %{fgnu-tm: -lcrttms.o}" |
| |
| /* Default Darwin ASM_SPEC, very simple. */ |
| #define ASM_SPEC "-arch %(darwin_arch) \ |
| %{Zforce_cpusubtype_ALL:-force_cpusubtype_ALL} \ |
| %{static}" |
| |
| /* Default ASM_DEBUG_SPEC. Darwin's as cannot currently produce dwarf |
| debugging data. */ |
| |
| #define ASM_DEBUG_SPEC "%{g*:%{!g0:%{!gdwarf*:--gstabs}}}" |
| |
| /* We still allow output of STABS if the assembler supports it. */ |
| #ifdef HAVE_AS_STABS_DIRECTIVE |
| #define DBX_DEBUGGING_INFO 1 |
| #define PREFERRED_DEBUGGING_TYPE DBX_DEBUG |
| #endif |
| |
| #define DWARF2_DEBUGGING_INFO 1 |
| |
| #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" |
| #define DEBUG_MACRO_SECTION "__DWARF,__debug_macro,regular,debug" |
| |
| #define TARGET_WANT_DEBUG_PUB_SECTIONS true |
| |
| #define TARGET_FORCE_AT_COMP_DIR true |
| |
| /* When generating stabs debugging, use N_BINCL entries. */ |
| |
| #define DBX_USE_BINCL |
| |
| /* There is no limit to the length of stabs strings. */ |
| |
| #define DBX_CONTIN_LENGTH 0 |
| |
| /* gdb needs a null N_SO at the end of each file for scattered loading. */ |
| |
| #define DBX_OUTPUT_NULL_N_SO_AT_MAIN_SOURCE_FILE_END |
| |
| /* GCC's definition of 'one_only' is the same as its definition of 'weak'. */ |
| #define MAKE_DECL_ONE_ONLY(DECL) (DECL_WEAK (DECL) = 1) |
| |
| /* 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_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) |
| |
| /* 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 |
| |
| /* 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 |
| |
| /* 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. |
| 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 1 |
| |
| #undef INIT_SECTION_ASM_OP |
| #define INIT_SECTION_ASM_OP "" |
| |
| #undef INVOKE__main |
| |
| #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 TARGET_ASM_FILE_END |
| #define TARGET_ASM_FILE_END darwin_file_end |
| |
| /* Because Mach-O relocations have a counter from 1 to 255 for the |
| section number they apply to, it is necessary to output all |
| normal sections before the LTO sections, to make sure that the |
| sections that may have relocations always have a section number |
| smaller than 255. */ |
| #undef TARGET_ASM_LTO_START |
| #define TARGET_ASM_LTO_START darwin_asm_lto_start |
| #undef TARGET_ASM_LTO_END |
| #define TARGET_ASM_LTO_END darwin_asm_lto_end |
| |
| #define ASM_OUTPUT_SKIP(FILE,SIZE) \ |
| fprintf (FILE, "\t.space "HOST_WIDE_INT_PRINT_UNSIGNED"\n", SIZE) |
| |
| /* 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) \ |
| do { if (CAT_NAME) \ |
| sprintf (BUF, "%c[%s(%s) %s]", (IS_INST) ? '-' : '+', \ |
| (CLASS_NAME), (CAT_NAME), (SEL_NAME)); \ |
| else \ |
| sprintf (BUF, "%c[%s %s]", (IS_INST) ? '-' : '+', \ |
| (CLASS_NAME), (SEL_NAME)); \ |
| } while (0) |
| |
| #undef ASM_DECLARE_OBJECT_NAME |
| #define ASM_DECLARE_OBJECT_NAME(FILE, NAME, DECL) \ |
| darwin_asm_declare_object_name ((FILE), (NAME), (DECL)) |
| |
| /* 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_symbol calls are telling the machopic subsystem |
| that the name *is* defined in this module, so it doesn't need to |
| make them indirect. */ |
| |
| #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 (! 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_FUNCTION_LABEL (FILE, xname, DECL); \ |
| } while (0) |
| |
| #undef TARGET_ASM_DECLARE_CONSTANT_NAME |
| #define TARGET_ASM_DECLARE_CONSTANT_NAME darwin_asm_declare_constant_name |
| |
| /* Wrap new method names in quotes so the assembler doesn't gag. |
| 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, 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 (darwin_label_is_anonymous_local_objc_name (xname)) \ |
| fprintf (FILE, "L%s", xname); \ |
| else if (xname[0] != '"' && name_needs_quotes (xname)) \ |
| asm_fprintf (FILE, "\"%U%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" |
| |
| #undef ASM_OUTPUT_ALIGN |
| #define ASM_OUTPUT_ALIGN(FILE,LOG) \ |
| if ((LOG) != 0) \ |
| fprintf (FILE, "\t%s\t%d\n", ALIGN_ASM_OP, (LOG)) |
| |
| /* 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 * 8) |
| |
| #define L2_MAX_OFILE_ALIGNMENT 15 |
| |
| /* These are the three variants that emit referenced blank space. */ |
| #define ASM_OUTPUT_ALIGNED_BSS(FILE, DECL, NAME, SIZE, ALIGN) \ |
| darwin_output_aligned_bss ((FILE), (DECL), (NAME), (SIZE), (ALIGN)) |
| |
| #undef ASM_OUTPUT_ALIGNED_DECL_LOCAL |
| #define ASM_OUTPUT_ALIGNED_DECL_LOCAL(FILE, DECL, NAME, SIZE, ALIGN) \ |
| darwin_asm_output_aligned_decl_local \ |
| ((FILE), (DECL), (NAME), (SIZE), (ALIGN)) |
| |
| #undef ASM_OUTPUT_ALIGNED_DECL_COMMON |
| #define ASM_OUTPUT_ALIGNED_DECL_COMMON(FILE, DECL, NAME, SIZE, ALIGN) \ |
| darwin_asm_output_aligned_decl_common \ |
| ((FILE), (DECL), (NAME), (SIZE), (ALIGN)) |
| |
| /* The generic version, archs should over-ride where required. */ |
| #define MACHOPIC_NL_SYMBOL_PTR_SECTION ".non_lazy_symbol_pointer" |
| |
| /* 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 |
| |
| #undef TARGET_ASM_FUNCTION_SECTION |
| #define TARGET_ASM_FUNCTION_SECTION darwin_function_section |
| |
| #undef TARGET_ASM_FUNCTION_SWITCHED_TEXT_SECTIONS |
| #define TARGET_ASM_FUNCTION_SWITCHED_TEXT_SECTIONS \ |
| darwin_function_switched_text_sections |
| |
| #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_TM_CLONE_TABLE_SECTION |
| #define TARGET_ASM_TM_CLONE_TABLE_SECTION darwin_tm_clone_table_section |
| |
| #undef TARGET_ASM_RELOC_RW_MASK |
| #define TARGET_ASM_RELOC_RW_MASK machopic_reloc_rw_mask |
| |
| /* Globalizing directive for a label. */ |
| #define GLOBAL_ASM_OP "\t.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, \ |
| affects_type_identity } */ \ |
| { "apple_kext_compatibility", 0, 0, false, true, false, \ |
| darwin_handle_kext_attribute, false }, \ |
| { "weak_import", 0, 0, true, false, false, \ |
| darwin_handle_weak_import_attribute, false } |
| |
| #undef ASM_GENERATE_INTERNAL_LABEL |
| #define ASM_GENERATE_INTERNAL_LABEL(LABEL,PREFIX,NUM) \ |
| sprintf (LABEL, "*%s%ld", PREFIX, (long)(NUM)) |
| |
| #undef TARGET_ASM_MARK_DECL_PRESERVED |
| #define TARGET_ASM_MARK_DECL_PRESERVED darwin_mark_decl_preserved |
| |
| /* 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. */ |
| |
| #define MACHO_SYMBOL_FLAG_VARIABLE (SYMBOL_FLAG_MACH_DEP) |
| #define MACHO_SYMBOL_FLAG_DEFINED ((SYMBOL_FLAG_MACH_DEP) << 1) |
| |
| /* 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. */ |
| |
| enum machopic_addr_class { |
| MACHOPIC_UNDEFINED, |
| MACHOPIC_DEFINED_DATA, |
| MACHOPIC_UNDEFINED_DATA, |
| MACHOPIC_DEFINED_FUNCTION, |
| MACHOPIC_UNDEFINED_FUNCTION |
| }; |
| |
| /* Macros defining the various PIC cases. */ |
| |
| #undef MACHO_DYNAMIC_NO_PIC_P |
| #define MACHO_DYNAMIC_NO_PIC_P (TARGET_MACHO_DYNAMIC_NO_PIC) |
| #undef MACHOPIC_INDIRECT |
| #define MACHOPIC_INDIRECT (flag_pic || MACHO_DYNAMIC_NO_PIC_P) |
| #define MACHOPIC_JUST_INDIRECT (MACHO_DYNAMIC_NO_PIC_P) |
| #undef MACHOPIC_PURE |
| #define MACHOPIC_PURE (flag_pic && ! 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 default_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_ = (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 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" |
| |
| #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 | 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 |
| |
| #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 |
| |
| #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 "" |
| #undef GTM_SELF_SPECS |
| #define GTM_SELF_SPECS "" |
| |
| /* Darwin disables section anchors by default. |
| They should be enabled per arch where support exists in that arch. */ |
| #define TARGET_ASM_OUTPUT_ANCHOR NULL |
| #define DARWIN_SECTION_ANCHORS 0 |
| |
| #define HAVE_ENABLE_EXECUTE_STACK |
| |
| /* For Apple KEXTs, we make the constructors return this to match gcc |
| 2.95. */ |
| #define TARGET_CXX_CDTOR_RETURNS_THIS (darwin_kextabi_p) |
| #define TARGET_KEXTABI flag_apple_kext |
| |
| /* We have target-specific builtins. */ |
| #define SUBTARGET_FOLD_BUILTIN darwin_fold_builtin |
| |
| #define TARGET_N_FORMAT_TYPES 1 |
| #define TARGET_FORMAT_TYPES darwin_additional_format_types |
| |
| #ifndef USED_FOR_TARGET |
| extern void darwin_driver_init (unsigned int *,struct cl_decoded_option **); |
| #define GCC_DRIVER_HOST_INITIALIZATION \ |
| darwin_driver_init (&decoded_options_count, &decoded_options) |
| #endif |
| |
| /* The Apple assembler and linker do not support constructor priorities. */ |
| #undef SUPPORTS_INIT_PRIORITY |
| #define SUPPORTS_INIT_PRIORITY 0 |
| |
| /* When building cross-compilers (and native crosses) we shall default to |
| providing an osx-version-min of this unless overridden by the User. */ |
| #define DEF_MIN_OSX_VERSION "10.4" |
| |
| #endif /* CONFIG_DARWIN_H */ |