| /* Target definitions for Darwin (Mac OS X) systems. |
| Copyright (C) 1989-2020 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 |
| |
| /* 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 |
| |
| /* Register static destructors to run from __cxa_atexit instead of putting |
| them into a .mod_term_funcs section. */ |
| |
| #define TARGET_DTORS_FROM_CXA_ATEXIT true |
| |
| /* 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 100508 |
| |
| /* 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; |
| |
| /* Darwin has a user convenience feature where some linker options are exposed |
| at the driver level (so one can type "-all_load" instead of "-Wl,-all_load" |
| or "-Xlinker -all_load"). We retain this, but now these options are all |
| marked as 'Driver' and we process them as early as possible so that they |
| get allocated to the right toolchain command. There are a couple of special |
| cases where these driver opts are used multiple times, or to control |
| operations on more than one command (e.g. dynamiclib). These are handled |
| specially and we then add %<xxxx specs for the commands that _don't_ need |
| them. NOTE: the order of 'shared' and 'dynamiclib' is significant, hence |
| they are placed out of alphabetical order at the start. Likewise, we keep |
| a couple of cases where a negative option originally appeared after the |
| positive alternate, potentially overriding it. |
| When we report an error with %e, it seems necessary to strip the option |
| before doing so, otherwise it survives to the cc1 command line (%e doesn't |
| appear to abort the program before this). |
| Right now there's no mechanism to split up the "variable portion" (%*) of |
| the matched spec string, so where we have some driver specs that take 2 |
| or 3 arguments, these cannot be processed here, but are deferred until the |
| LINK_SPEC, where they are copied verbatim. */ |
| |
| #undef SUBTARGET_DRIVER_SELF_SPECS |
| #define SUBTARGET_DRIVER_SELF_SPECS \ |
| "%{shared:%{!dynamiclib:-dynamiclib}} %<shared", \ |
| "%{static:%{dynamic|dynamiclib:%econflicting code generation switches}}",\ |
| "%{dynamiclib:-Xlinker -dylib \ |
| %{allowable_client*:-Xlinker -allowable_client -Xlinker %*} \ |
| %<allowable_client* \ |
| %{bundle_loader*: %<bundle_loader* \ |
| %e-bundle_loader not allowed with -dynamiclib} \ |
| %{client_name*: %<client_name* \ |
| %e-client_name not allowed with -dynamiclib} \ |
| %{compatibility_version*:\ |
| -Xlinker -dylib_compatibility_version -Xlinker %*} \ |
| %<compatibility_version* \ |
| %{current_version*:-Xlinker -dylib_current_version -Xlinker %*} \ |
| %<current_version* \ |
| %{install_name*:-Xlinker -dylib_install_name -Xlinker %* } \ |
| %<install_name* \ |
| %{keep_private_externs: %<keep_private_externs \ |
| %e-keep_private_externs not allowed with -dynamiclib} \ |
| %{private_bundle: %<private_bundle \ |
| %e-private_bundle not allowed with -dynamiclib} \ |
| }", \ |
| "%{!dynamiclib: \ |
| %{bundle_loader*:-Xlinker -bundle_loader -Xlinker %*} \ |
| %<bundle_loader* \ |
| %{client_name*:-Xlinker -client_name -Xlinker %*} \ |
| %<client_name* \ |
| %{compatibility_version*: %<compatibility_version* \ |
| %e-compatibility_version only allowed with -dynamiclib} \ |
| %{current_version*: %<current_version* \ |
| %e-current_version only allowed with -dynamiclib} \ |
| %{install_name*: %<install_name* \ |
| %e-install_name only allowed with -dynamiclib} \ |
| %{keep_private_externs:-Xlinker -keep_private_externs} \ |
| %<keep_private_externs \ |
| %{private_bundle:-Xlinker -private_bundle} \ |
| %<private_bundle \ |
| }", \ |
| "%{all_load:-Xlinker -all_load} %<all_load", \ |
| "%{arch_errors_fatal:-Xlinker -arch_errors_fatal} \ |
| %<arch_errors_fatal", \ |
| "%{bind_at_load:-Xlinker -bind_at_load} %<bind_at_load", \ |
| "%{bundle:%{!dynamiclib:-Xlinker -bundle; \ |
| :%e-bundle not allowed with -dynamiclib}}", \ |
| "%{dead_strip:-Xlinker -dead_strip} %<dead_strip", \ |
| "%{dylib_file*:-Xlinker -dylib_file -Xlinker %*} %<dylib_file*", \ |
| "%{dylinker:-Xlinker -dylinker} %<dylinker", \ |
| "%{dylinker_install_name*:-Xlinker -dylinker_install_name -Xlinker %*}\ |
| %<dylinker_install_name*", \ |
| "%{exported_symbols_list*:-Xlinker -exported_symbols_list -Xlinker %*}\ |
| %<exported_symbols_list", \ |
| "%{findirect-virtual-calls: -fapple-kext} %<findirect-virtual-calls", \ |
| "%{fterminated-vtables: -fapple-kext} %<fterminated-vtables", \ |
| "%{fapple-kext|mkernel:-static}", \ |
| "%{filelist*:-Xlinker -filelist -Xlinker %*} %<filelist*", \ |
| "%{flat_namespace:-Xlinker -flat_namespace} %<flat_namespace", \ |
| "%{force_cpusubtype_ALL:-Xassembler -force_cpusubtype_ALL} ", \ |
| "%{force_flat_namespace: \ |
| %{!dynamiclib:-Xlinker -force_flat_namespace; \ |
| :%e-force_flat_namespace not allowed with -dynamiclib}} \ |
| %<force_flat_namespace", \ |
| "%{framework*:-Xlinker -framework -Xlinker %*} %<framework*", \ |
| "%{gfull:-g -fno-eliminate-unused-debug-symbols} %<gfull", \ |
| "%{gused:-g -feliminate-unused-debug-symbols} %<gused", \ |
| "%{gsplit-dwarf:%ngsplit-dwarf is not supported on this platform} \ |
| %<gsplit-dwarf", \ |
| "%{headerpad_max_install_names:-Xlinker -headerpad_max_install_names}\ |
| %<headerpad_max_install_names", \ |
| "%{image_base*:-Xlinker -image_base -Xlinker %*} %<image_base*", \ |
| "%{init*:-Xlinker -init -Xlinker %*} %<init*", \ |
| "%{multi_module:-Xlinker -multi_module} %<multi_module", \ |
| "%{multiply_defined*:-Xlinker -multiply_defined -Xlinker %*} \ |
| %<multiply_defined* ", \ |
| "%{multiplydefinedunused*:\ |
| -Xlinker -multiply_defined_unused -Xlinker %*} \ |
| %<multiplydefinedunused* ", \ |
| "%{no_dead_strip_inits_and_terms:\ |
| -Xlinker -no_dead_strip_inits_and_terms} \ |
| %<no_dead_strip_inits_and_terms", \ |
| "%{nofixprebinding:-Xlinker -nofixprebinding} %<nofixprebinding", \ |
| "%{nomultidefs:-Xlinker -nomultidefs} %<nomultidefs", \ |
| "%{pagezero_size*:-Xlinker -pagezero_size -Xlinker %*} \ |
| %<pagezero_size", \ |
| "%{prebind:-Xlinker -prebind} %<prebind", \ |
| "%{noprebind:-Xlinker -noprebind} %<noprebind", \ |
| "%{prebind_all_twolevel_modules:\ |
| -Xlinker -prebind_all_twolevel_modules} \ |
| %<prebind_all_twolevel_modules", \ |
| "%{preload:-Xlinker -preload} %<preload", \ |
| "%{read_only_relocs*:-Xlinker -read_only_relocs -Xlinker %*} \ |
| %<read_only_relocs*", \ |
| "%{rpath*: -Xlinker -rpath -Xlinker %*}", \ |
| "%{seg_addr_table_filename*: \ |
| -Xlinker -seg_addr_table_filename -Xlinker %*} \ |
| %<seg_addr_table_filename*", \ |
| "%{seg_addr_table*:-Xlinker -seg_addr_table -Xlinker %*} \ |
| %<seg_addr_table*", \ |
| "%{seg1addr*:-Xlinker -image_base -Xlinker %*} %<seg1addr*", \ |
| "%{seglinkedit:-Xlinker -seglinkedit} %<seglinkedit", \ |
| "%{noseglinkedit:-Xlinker -noseglinkedit} %<noseglinkedit", \ |
| "%{segs_read_only_addr*:-Xlinker -segs_read_only_addr -Xlinker %*} \ |
| %<segs_read_only_addr*", \ |
| "%{segs_read_write_addr*:-Xlinker -segs_read_write_addr -Xlinker %*} \ |
| %<segs_read_write_addr*", \ |
| "%{single_module:-Xlinker -single_module} %<single_module", \ |
| "%{sub_library*:-Xlinker -sub_library -Xlinker %*} %<sub_library*", \ |
| "%{sub_umbrella*:-Xlinker -sub_umbrella -Xlinker %*} %<sub_umbrella*",\ |
| "%{twolevel_namespace:-Xlinker -twolevel_namespace} \ |
| %<twolevel_namespace", \ |
| "%{twolevel_namespace_hints:-Xlinker -twolevel_namespace_hints} \ |
| %<twolevel_namespace_hints", \ |
| "%{umbrella*:-Xlinker -umbrella -Xlinker %*} %<umbrella*", \ |
| "%{undefined*:-Xlinker -undefined -Xlinker %*} %<undefined*", \ |
| "%{unexported_symbols_list*:\ |
| -Xlinker -unexported_symbols_list -Xlinker %*} \ |
| %<unexported_symbols_list*", \ |
| "%{weak_reference_mismatches*:\ |
| -Xlinker -weak_reference_mismatches -Xlinker %*} \ |
| %<weak_reference_mismatches*", \ |
| "%{whyload:-Xlinker -whyload} %<whyload", \ |
| "%{whatsloaded:-Xlinker -whatsloaded} %<whatsloaded", \ |
| "%{w:-Xlinker -w}", \ |
| "%<y*", \ |
| "%<Mach " |
| |
| #if LD64_HAS_EXPORT_DYNAMIC |
| #define DARWIN_RDYNAMIC "%{rdynamic:-export_dynamic}" |
| #else |
| #define DARWIN_RDYNAMIC "%{rdynamic:%nrdynamic is not supported}" |
| #endif |
| |
| /* FIXME: we should check that the linker supports the -pie and -no_pie. |
| options. */ |
| #define DARWIN_PIE_SPEC \ |
| "%{pie|fpie|fPIE:\ |
| %{mdynamic-no-pic: \ |
| %n'-mdynamic-no-pic' overrides '-pie', '-fpie' or '-fPIE'; \ |
| :%:version-compare(>= 10.5 mmacosx-version-min= -pie) }} " |
| |
| #define DARWIN_NOPIE_SPEC \ |
| "%{no-pie|fno-pie|fno-PIE: \ |
| %:version-compare(>= 10.7 mmacosx-version-min= -no_pie) }" |
| |
| #define DARWIN_CC1_SPEC \ |
| "%<dynamic %<dynamiclib %<force_cpusubtype_ALL " |
| |
| #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 a fix for PR41260 by passing -no_compact_unwind on darwin10 and |
| later until the assembler, linker and libunwind are able to deal with the |
| output from GCC. |
| |
| FIXME: we should check that the linker supports the option. |
| */ |
| |
| #define DARWIN_NOCOMPACT_UNWIND \ |
| " %:version-compare(>= 10.6 mmacosx-version-min= -no_compact_unwind) " |
| |
| /* In Darwin linker specs we can put -lcrt0.o and ld will search the library |
| path for crt0.o or -lcrtx.a and it will search for for libcrtx.a. As for |
| other ports, we can also put xxx.{o,a}%s and get the appropriate complete |
| startfile absolute directory. This latter point is important when we want |
| to override ld's rule of .dylib being found ahead of .a and the user wants |
| the convenience library to be linked. */ |
| |
| /* The LINK_COMMAND spec 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 \ |
| "%{!c:%{!E:%{!S:%{!M:%{!MM:%{!fsyntax-only:%{!fdump=*: \ |
| %(linker)" \ |
| LINK_PLUGIN_SPEC \ |
| "%{flto*:%<fcompare-debug*} \ |
| %{flto} %{fno-lto} %{flto=*} \ |
| %l " LINK_COMPRESS_DEBUG_SPEC \ |
| "%X %{s} %{t} %{Z} %{u*} \ |
| %{e*} %{r} \ |
| %{o*}%{!o:-o a.out} \ |
| %{!r:%{!nostdlib:%{!nostartfiles:%S}}} \ |
| %{L*} %(link_libgcc) %o \ |
| %{!r:%{!nostdlib:%{!nodefaultlibs:\ |
| %{fprofile-arcs|fprofile-generate*|coverage:-lgcov} \ |
| %{fopenacc|fopenmp|%:gt(%{ftree-parallelize-loops=*:%*} 1): \ |
| %{static|static-libgcc|static-libstdc++|static-libgfortran: \ |
| libgomp.a%s; : -lgomp }} \ |
| %{fgnu-tm: \ |
| %{static|static-libgcc|static-libstdc++|static-libgfortran: \ |
| libitm.a%s; : -litm }} \ |
| %{%:sanitize(address): -lasan } \ |
| %{%:sanitize(undefined): -lubsan } \ |
| %(link_ssp) \ |
| %:version-compare(>< 10.6 10.7 mmacosx-version-min= -ld10-uwfef) \ |
| %(link_gcc_c_sequence) \ |
| %{!nodefaultexport:%{dylib|dynamiclib|bundle: \ |
| %:version-compare(>= 10.11 asm_macosx_version_min= -U) \ |
| %:version-compare(>= 10.11 asm_macosx_version_min= ___emutls_get_address) \ |
| %:version-compare(>= 10.11 asm_macosx_version_min= -exported_symbol) \ |
| %:version-compare(>= 10.11 asm_macosx_version_min= ___emutls_get_address) \ |
| %:version-compare(>= 10.11 asm_macosx_version_min= -U) \ |
| %:version-compare(>= 10.11 asm_macosx_version_min= ___emutls_register_common) \ |
| %:version-compare(>= 10.11 asm_macosx_version_min= -exported_symbol) \ |
| %:version-compare(>= 10.11 asm_macosx_version_min= ___emutls_register_common) \ |
| }} \ |
| }}}\ |
| %{!r:%{!nostdlib:%{!nostartfiles:%E}}} %{T*} %{F*} "\ |
| DARWIN_PIE_SPEC \ |
| DARWIN_NOPIE_SPEC \ |
| DARWIN_RDYNAMIC \ |
| DARWIN_NOCOMPACT_UNWIND \ |
| "}}}}}}} %<pie %<no-pie %<rdynamic " |
| |
| /* Spec that controls whether the debug linker is run automatically for |
| a link step. This needs to be done if there is a source file on the |
| command line which will result in a temporary object (and debug is |
| enabled). */ |
| |
| #define DSYMUTIL_SPEC \ |
| "%{!c:%{!E:%{!S:%{!r:%{!M:%{!MM:%{!fsyntax-only:%{!fdump=*:\ |
| %{g*:%{!gstabs*:%{%:debug-level-gt(0): -idsym \ |
| %{.c|.cc|.C|.cpp|.cp|.c++|.cxx|.CPP|.m|.mm|.s|.f|.f90|\ |
| .f95|.f03|.f77|.for|.F|.F90|.F95|.F03|.d: -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 %{!nolibc:%L} " |
| |
| /* ld64 supports a sysroot, it just has a different name and there's no easy |
| way to check for it at config time. */ |
| #undef HAVE_LD_SYSROOT |
| #define HAVE_LD_SYSROOT 1 |
| /* It seems the only (working) way to get a space after %R is to append a |
| dangling '/'. */ |
| #define SYSROOT_SPEC "%{!isysroot*:-syslibroot %R/ } " |
| |
| /* Do the same as clang, for now, and insert the sysroot for ld when an |
| isysroot is specified. */ |
| #define LINK_SYSROOT_SPEC "%{isysroot*:-syslibroot %*} " |
| |
| /* Suppress the addition of extra prefix paths when a sysroot is in use. */ |
| #define STANDARD_STARTFILE_PREFIX_1 "" |
| #define STANDARD_STARTFILE_PREFIX_2 "" |
| |
| |
| /* Please keep the random linker options in alphabetical order. |
| 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:-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)}\ |
| %{force_cpusubtype_ALL:-arch %(darwin_arch)} \ |
| %{!force_cpusubtype_ALL:-arch %(darwin_subarch)} "\ |
| LINK_SYSROOT_SPEC \ |
| "%{mmacosx-version-min=*:-macosx_version_min %*} \ |
| %{!multiply_defined*:%{shared-libgcc: \ |
| %:version-compare(< 10.5 mmacosx-version-min= -multiply_defined) \ |
| %:version-compare(< 10.5 mmacosx-version-min= suppress) }} \ |
| %{sectalign*} %{sectcreate*} %{sectobjectsymbols*} %{sectorder*} \ |
| %{segaddr*} %{segcreate*} %{segprot*} " |
| |
| /* Machine dependent libraries. */ |
| |
| #define LIB_SPEC "%{!static:-lSystem}" |
| |
| /* |
| Note that by default, -lgcc_eh is not linked against. |
| This is because,in general, we need to unwind through system libraries that |
| are linked with the shared unwinder in libunwind (or libgcc_s for 10.4/5). |
| |
| For -static-libgcc: < 10.6, use the unwinder in libgcc_eh (and find |
| the emultls impl. there too). |
| |
| For -static-libgcc: >= 10.6, the unwinder *still* comes from libSystem and |
| we find the emutls impl from lemutls_w. In either case, the builtins etc. |
| are linked from -lgcc. |
| |
| When we have specified shared-libgcc or any case that might require |
| exceptions, we pull the libgcc content (including emulated tls) from |
| -lgcc_s.1 in GCC and the unwinder from /usr/lib/libgcc_s.1 for < 10.6 and |
| libSystem for >= 10.6 respectively. |
| Otherwise, we just link the emutls/builtins from convenience libs. |
| |
| If we need exceptions, prior to 10.3.9, then we have to link the static |
| eh lib, since there's no shared version on the system. |
| |
| In all cases, libgcc_s.1 will be installed with the compiler, or any app |
| built using it, so we can link the builtins and emutls shared on all. |
| |
| We have to work around that DYLD_XXXX are disabled in macOS 10.11+ which |
| means that any bootstrap trying to use a shared libgcc with a bumped SO- |
| name will fail. This means that we do not accept shared libgcc for these |
| versions. |
| |
| For -static-libgcc: >= 10.6, the unwinder *still* comes from libSystem and |
| we find the emutls impl from lemutls_w. In either case, the builtins etc. |
| are linked from -lgcc. |
| > |
| Otherwise, we just link the shared version of gcc_s.1.1 and pick up |
| exceptions: |
| * Prior to 10.3.9, then we have to link the static eh lib, since there |
| is no shared version on the system. |
| * from 10.3.9 to 10.5, from /usr/lib/libgcc_s.1.dylib |
| * from 10.6 onwards, from libSystem.dylib |
| |
| In all cases, libgcc_s.1.1 will be installed with the compiler, or any app |
| built using it, so we can link the builtins and emutls shared on all. |
| */ |
| #undef REAL_LIBGCC_SPEC |
| #define REAL_LIBGCC_SPEC \ |
| "%{static-libgcc|static: \ |
| %:version-compare(!> 10.6 mmacosx-version-min= -lgcc_eh) \ |
| %:version-compare(>= 10.6 mmacosx-version-min= -lemutls_w); \ |
| shared-libgcc|fexceptions|fobjc-exceptions|fgnu-runtime: \ |
| %:version-compare(!> 10.11 mmacosx-version-min= -lgcc_s.1.1) \ |
| %:version-compare(>= 10.11 mmacosx-version-min= -lemutls_w) \ |
| %:version-compare(!> 10.3.9 mmacosx-version-min= -lgcc_eh) \ |
| %: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); \ |
| : -lemutls_w \ |
| } -lgcc " |
| |
| /* We specify crt0.o as -lcrt0.o so that ld will search the library path. */ |
| |
| #undef STARTFILE_SPEC |
| #define STARTFILE_SPEC \ |
| "%{dynamiclib: %(darwin_dylib1) %{fgnu-tm: -lcrttms.o}} \ |
| %{!dynamiclib:%{bundle:%(darwin_bundle1)} \ |
| %{!bundle:%{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)}}}}}} \ |
| %(darwin_crt3) %<dynamiclib " |
| |
| /* 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_crt2", DARWIN_CRT2_SPEC }, \ |
| { "darwin_crt3", DARWIN_CRT3_SPEC }, \ |
| { "darwin_dylib1", DARWIN_DYLIB1_SPEC }, \ |
| { "darwin_bundle1", DARWIN_BUNDLE1_SPEC }, |
| |
| #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}" |
| |
| #define DARWIN_CRT2_SPEC "" |
| |
| /* crt3.o provides __cxa_atexit on systems that don't have it (and a fix |
| up for faulty versions on 10.4). Since it's only used with C++, which |
| requires passing -shared-libgcc, key off that to avoid unnecessarily |
| adding a destructor to every program built for 10.4 or earlier. */ |
| |
| #define DARWIN_CRT3_SPEC \ |
| "%{shared-libgcc:%:version-compare(< 10.5 mmacosx-version-min= crt3.o%s)}" |
| |
| #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_BUNDLE1_SPEC \ |
| "%{!static:%:version-compare(< 10.6 mmacosx-version-min= -lbundle1.o) \ |
| %{fgnu-tm: -lcrttms.o}}" |
| |
| #ifdef HAVE_AS_MMACOSX_VERSION_MIN_OPTION |
| /* Emit macosx version (but only major). */ |
| #define ASM_MMACOSX_VERSION_MIN_SPEC \ |
| "%{asm_macosx_version_min=*: -mmacosx-version-min=%* } \ |
| %<asm_macosx_version_min=* " |
| #else |
| #define ASM_MMACOSX_VERSION_MIN_SPEC " %<asm_macosx_version_min=* " |
| #endif |
| |
| #if HAVE_GNU_AS |
| /* The options are added in gcc.c for this case. */ |
| #define ASM_OPTIONS "" |
| #else |
| /* When we detect that we're cctools or llvm as, we need to insert the right |
| additional options. Actually, currently these are the same as GAS. */ |
| #define ASM_OPTIONS "%{v} %{w:-W} %{I*}" |
| #endif |
| |
| /* Default Darwin ASM_SPEC, very simple. */ |
| #define ASM_SPEC \ |
| "%{static} -arch %(darwin_arch) " \ |
| ASM_OPTIONS ASM_MMACOSX_VERSION_MIN_SPEC |
| |
| #ifdef HAVE_AS_STABS_DIRECTIVE |
| /* We only pass a debug option to the assembler if that supports stabs, since |
| dwarf is not uniformly supported in the assemblers. */ |
| #define ASM_DEBUG_SPEC "%{g*:%{%:debug-level-gt(0):%{!gdwarf*:--gstabs}}}" |
| #else |
| #define ASM_DEBUG_SPEC "" |
| #endif |
| |
| #undef ASM_DEBUG_OPTION_SPEC |
| #define ASM_DEBUG_OPTION_SPEC "" |
| |
| #define ASM_FINAL_SPEC \ |
| "%{gsplit-dwarf:%ngsplit-dwarf is not supported on this platform} \ |
| %<gsplit-dwarf" |
| |
| /* Since we bootstrap with C++ toolchains realistically require DWARF-2, even |
| if stabs is supported by the assembler. */ |
| |
| #define PREFERRED_DEBUGGING_TYPE DWARF2_DEBUG |
| #define DARWIN_PREFER_DWARF |
| #define DWARF2_DEBUGGING_INFO 1 |
| |
| #ifdef HAVE_AS_STABS_DIRECTIVE |
| #define DBX_DEBUGGING_INFO 1 |
| #endif |
| |
| #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_LOCLISTS_SECTION "__DWARF,__debug_loclists,regular,debug" |
| |
| #define DEBUG_STR_SECTION "__DWARF,__debug_str,regular,debug" |
| #define DEBUG_STR_OFFSETS_SECTION "__DWARF,__debug_str_offs,regular,debug" |
| #define DEBUG_RANGES_SECTION "__DWARF,__debug_ranges,regular,debug" |
| #define DEBUG_RNGLISTS_SECTION "__DWARF,__debug_rnglists,regular,debug" |
| #define DEBUG_MACRO_SECTION "__DWARF,__debug_macro,regular,debug" |
| |
| #define DEBUG_LTO_INFO_SECTION "__GNU_DWARF_LTO,__debug_info,regular,debug" |
| #define DEBUG_LTO_ABBREV_SECTION "__GNU_DWARF_LTO,__debug_abbrev,regular,debug" |
| #define DEBUG_LTO_MACINFO_SECTION "__GNU_DWARF_LTO,__debug_macinfo,regular,debug" |
| #define DEBUG_LTO_LINE_SECTION "__GNU_DWARF_LTO,__debug_line,regular,debug" |
| #define DEBUG_LTO_STR_SECTION "__GNU_DWARF_LTO,__debug_str,regular,debug" |
| #define DEBUG_LTO_MACRO_SECTION "__GNU_DWARF_LTO,__debug_macro,regular,debug" |
| |
| #define TARGET_WANT_DEBUG_PUB_SECTIONS true |
| #define DEBUG_PUBNAMES_SECTION ((debug_generate_pub_sections == 2) \ |
| ? "__DWARF,__debug_gnu_pubn,regular,debug" \ |
| : "__DWARF,__debug_pubnames,regular,debug") |
| |
| #define DEBUG_PUBTYPES_SECTION ((debug_generate_pub_sections == 2) \ |
| ? "__DWARF,__debug_gnu_pubt,regular,debug" \ |
| : "__DWARF,__debug_pubtypes,regular,debug") |
| |
| /* 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 |
| |
| /* 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 |
| |
| /* Some of Darwin's unwinders need current frame address state to be reset |
| after a DW_CFA_restore_state recovers the register values. */ |
| #undef TARGET_ASM_SHOULD_RESTORE_CFA_STATE |
| #define TARGET_ASM_SHOULD_RESTORE_CFA_STATE darwin_should_restore_cfa_state |
| |
| /* 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. */ |
| |
| #undef ASM_DECLARE_FUNCTION_NAME |
| #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_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, \ |
| affects_type_identity, handler, exclude } */ \ |
| { "apple_kext_compatibility", 0, 0, false, true, false, false, \ |
| darwin_handle_kext_attribute, NULL }, \ |
| { "weak_import", 0, 0, true, false, false, false, \ |
| darwin_handle_weak_import_attribute, NULL } |
| |
| /* Make local constant labels linker-visible, so that if one follows a |
| weak_global constant, ld64 will be able to separate the atoms. */ |
| #undef ASM_GENERATE_INTERNAL_LABEL |
| #define ASM_GENERATE_INTERNAL_LABEL(LABEL,PREFIX,NUM) \ |
| do { \ |
| if (strcmp ("LC", PREFIX) == 0) \ |
| sprintf (LABEL, "*%s%ld", "lC", (long)(NUM)); \ |
| else if (strcmp ("Lubsan_data", PREFIX) == 0) \ |
| sprintf (LABEL, "*%s%ld", "lubsan_data", (long)(NUM));\ |
| else if (strcmp ("Lubsan_type", PREFIX) == 0) \ |
| sprintf (LABEL, "*%s%ld", "lubsan_type", (long)(NUM));\ |
| else if (strcmp ("LASAN", PREFIX) == 0) \ |
| sprintf (LABEL, "*%s%ld", "lASAN", (long)(NUM));\ |
| else if (strcmp ("LTRAMP", PREFIX) == 0) \ |
| sprintf (LABEL, "*%s%ld", "lTRAMP", (long)(NUM));\ |
| else \ |
| sprintf (LABEL, "*%s%ld", PREFIX, (long)(NUM)); \ |
| } while (0) |
| |
| #undef TARGET_ASM_MARK_DECL_PRESERVED |
| #define TARGET_ASM_MARK_DECL_PRESERVED darwin_mark_decl_preserved |
| |
| /* Any port using this header needs to define the first available |
| subtarget symbol bit: SYMBOL_FLAG_SUBT_DEP. */ |
| |
| /* Is a variable. */ |
| #define MACHO_SYMBOL_FLAG_VARIABLE (SYMBOL_FLAG_SUBT_DEP) |
| #define MACHO_SYMBOL_VARIABLE_P(RTX) \ |
| ((SYMBOL_REF_FLAGS (RTX) & MACHO_SYMBOL_FLAG_VARIABLE) != 0) |
| |
| /* Set on a symbol that must be indirected, even when there is a |
| definition in the TU. The ABI mandates that common symbols are so |
| indirected, as are weak. If 'fix-and-continue' is operational then |
| data symbols might also be. */ |
| |
| #define MACHO_SYMBOL_FLAG_MUST_INDIRECT ((SYMBOL_FLAG_SUBT_DEP) << 1) |
| #define MACHO_SYMBOL_MUST_INDIRECT_P(RTX) \ |
| ((SYMBOL_REF_FLAGS (RTX) & MACHO_SYMBOL_FLAG_MUST_INDIRECT) != 0) |
| |
| /* Set on a symbol with SYMBOL_FLAG_FUNCTION or MACHO_SYMBOL_FLAG_VARIABLE |
| to indicate that the function or variable is considered defined in this |
| translation unit. */ |
| |
| #define MACHO_SYMBOL_FLAG_DEFINED ((SYMBOL_FLAG_SUBT_DEP) << 2) |
| #define MACHO_SYMBOL_DEFINED_P(RTX) \ |
| ((SYMBOL_REF_FLAGS (RTX) & MACHO_SYMBOL_FLAG_DEFINED) != 0) |
| |
| /* Set on a symbol that has specified non-default visibility. */ |
| |
| #define MACHO_SYMBOL_FLAG_HIDDEN_VIS ((SYMBOL_FLAG_SUBT_DEP) << 3) |
| #define MACHO_SYMBOL_HIDDEN_VIS_P(RTX) \ |
| ((SYMBOL_REF_FLAGS (RTX) & MACHO_SYMBOL_FLAG_HIDDEN_VIS) != 0) |
| |
| /* Set on a symbol that should be made visible to the linker (overriding |
| 'L' symbol prefixes). */ |
| |
| #define MACHO_SYMBOL_FLAG_LINKER_VIS ((SYMBOL_FLAG_SUBT_DEP) << 4) |
| #define MACHO_SYMBOL_LINKER_VIS_P(RTX) \ |
| ((SYMBOL_REF_FLAGS (RTX) & MACHO_SYMBOL_FLAG_LINKER_VIS) != 0) |
| |
| /* Set on a symbol that is a pic stub or symbol indirection (i.e. the |
| L_xxxxx${stub,non_lazy_ptr,lazy_ptr}. */ |
| |
| #define MACHO_SYMBOL_FLAG_INDIRECTION ((SYMBOL_FLAG_SUBT_DEP) << 5) |
| #define MACHO_SYMBOL_INDIRECTION_P(RTX) \ |
| ((SYMBOL_REF_FLAGS (RTX) & MACHO_SYMBOL_FLAG_INDIRECTION) != 0) |
| |
| /* 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_FLAG_STATIC ((SYMBOL_FLAG_SUBT_DEP) << 6) |
| #define MACHO_SYMBOL_STATIC_P(RTX) \ |
| ((SYMBOL_REF_FLAGS (RTX) & MACHO_SYMBOL_FLAG_STATIC) != 0) |
| |
| /* 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" |
| |
| #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, 0) |
| |
| #define ASM_OUTPUT_DWARF_OFFSET(FILE,SIZE,LABEL,OFFSET,BASE) \ |
| darwin_asm_output_dwarf_offset (FILE, SIZE, LABEL, OFFSET, 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 |
| |
| #undef STACK_CHECK_STATIC_BUILTIN |
| #define STACK_CHECK_STATIC_BUILTIN 1 |
| |
| /* When building cross-compilers (and native crosses) we shall default to |
| providing an osx-version-min of this unless overridden by the User. |
| 10.5 is the only version that fully supports all our archs so that's the |
| fall-back default. */ |
| #ifndef DEF_MIN_OSX_VERSION |
| #define DEF_MIN_OSX_VERSION "10.5" |
| #endif |
| |
| /* Later versions of ld64 support coalescing weak code/data without requiring |
| that they be placed in specially identified sections. This is the earliest |
| _tested_ version known to support this so far. */ |
| #define MIN_LD64_NO_COAL_SECTS "236.3" |
| |
| /* From at least version 62.1, ld64 can build symbol indirection stubs as |
| needed, and there is no need for the compiler to emit them. */ |
| #define MIN_LD64_OMIT_STUBS "62.1" |
| |
| /* Emit start labels for init and term sections from this version. */ |
| #define MIN_LD64_INIT_TERM_START_LABELS "136.0" |
| |
| /* If we have no definition for the linker version, pick the minimum version |
| that will bootstrap the compiler. */ |
| #ifndef LD64_VERSION |
| # ifndef DEF_LD64 |
| # define LD64_VERSION "85.2.1" |
| # else |
| # define LD64_VERSION DEF_LD64 |
| # endif |
| #endif |
| |
| #endif /* CONFIG_DARWIN_H */ |