gcc/config/darwin.h

   1 /* Target definitions for Darwin (macOS) systems.
   2    Copyright (C) 1989-2024 Free Software Foundation, Inc.
   3    Contributed by Apple Computer Inc.
   4
   5 This file is part of GCC.
   6
   7 GCC is free software; you can redistribute it and/or modify
   8 it under the terms of the GNU General Public License as published by
   9 the Free Software Foundation; either version 3, or (at your option)
  10 any later version.
  11
  12 GCC is distributed in the hope that it will be useful,
  13 but WITHOUT ANY WARRANTY; without even the implied warranty of
  14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15 GNU General Public License for more details.
  16
  17 Under Section 7 of GPL version 3, you are granted additional
  18 permissions described in the GCC Runtime Library Exception, version
  19 3.1, as published by the Free Software Foundation.
  20
  21 You should have received a copy of the GNU General Public License and
  22 a copy of the GCC Runtime Library Exception along with this program;
  23 see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
  24 <http://www.gnu.org/licenses/>.  */
  25
  26 #ifndef CONFIG_DARWIN_H
  27 #define CONFIG_DARWIN_H
  28
  29 /* The definitions in this file are common to all processor types
  30    running Darwin, which is the kernel for macOS.  Darwin is
  31    basically a BSD user layer laid over a Mach kernel, then evolved
  32    for many years (at NeXT) in parallel with other Unix systems.  So
  33    while the runtime is a somewhat idiosyncratic Mach-based thing,
  34    other definitions look like they would for a BSD variant.  */
  35
  36 /* Although NeXT ran on many different architectures, as of Jan 2001
  37    the only supported Darwin targets are PowerPC and x86.  */
  38
  39 /* One of Darwin's NeXT legacies is the Mach-O format, which is partly
  40    like a.out and partly like COFF, with additional features like
  41    multi-architecture binary support.  */
  42
  43 #define DARWIN_X86 0
  44 #define DARWIN_PPC 0
  45
  46 #define OBJECT_FORMAT_MACHO 1
  47
  48 /* Suppress g++ attempt to link in the math library automatically. */
  49 #define MATH_LIBRARY ""
  50
  51 /* We have atexit.  */
  52
  53 #define HAVE_ATEXIT
  54
  55 /* Define an empty body for the function do_global_dtors() in libgcc2.c.  */
  56
  57 #define DO_GLOBAL_DTORS_BODY
  58
  59 /* Register static destructors to run from __cxa_atexit instead of putting
  60    them into a .mod_term_funcs section.  */
  61
  62 #define TARGET_DTORS_FROM_CXA_ATEXIT true
  63
  64 /* The string value for __SIZE_TYPE__.  */
  65
  66 #ifndef SIZE_TYPE
  67 #define SIZE_TYPE "long unsigned int"
  68 #endif
  69
  70 /* Type used for ptrdiff_t, as a string used in a declaration.  */
  71
  72 #undef  PTRDIFF_TYPE
  73 #define PTRDIFF_TYPE "int"
  74
  75 /* wchar_t is int.  */
  76
  77 #undef  WCHAR_TYPE
  78 #define WCHAR_TYPE "int"
  79 #undef  WCHAR_TYPE_SIZE
  80 #define WCHAR_TYPE_SIZE 32
  81
  82 #define INT8_TYPE "signed char"
  83 #define INT16_TYPE "short int"
  84 #define INT32_TYPE "int"
  85 #define INT64_TYPE "long long int"
  86 #define UINT8_TYPE "unsigned char"
  87 #define UINT16_TYPE "short unsigned int"
  88 #define UINT32_TYPE "unsigned int"
  89 #define UINT64_TYPE "long long unsigned int"
  90
  91 #define INT_LEAST8_TYPE "signed char"
  92 #define INT_LEAST16_TYPE "short int"
  93 #define INT_LEAST32_TYPE "int"
  94 #define INT_LEAST64_TYPE "long long int"
  95 #define UINT_LEAST8_TYPE "unsigned char"
  96 #define UINT_LEAST16_TYPE "short unsigned int"
  97 #define UINT_LEAST32_TYPE "unsigned int"
  98 #define UINT_LEAST64_TYPE "long long unsigned int"
  99
 100 #define INT_FAST8_TYPE "signed char"
 101 #define INT_FAST16_TYPE "short int"
 102 #define INT_FAST32_TYPE "int"
 103 #define INT_FAST64_TYPE "long long int"
 104 #define UINT_FAST8_TYPE "unsigned char"
 105 #define UINT_FAST16_TYPE "short unsigned int"
 106 #define UINT_FAST32_TYPE "unsigned int"
 107 #define UINT_FAST64_TYPE "long long unsigned int"
 108
 109 #define INTPTR_TYPE "long int"
 110 #define UINTPTR_TYPE "long unsigned int"
 111
 112 #define SIG_ATOMIC_TYPE "int"
 113
 114 /* Default to using the NeXT-style runtime, since that's what is
 115    pre-installed on Darwin systems.  */
 116
 117 #define NEXT_OBJC_RUNTIME 100508
 118
 119 /* Don't default to pcc-struct-return, because gcc is the only compiler, and
 120    we want to retain compatibility with older gcc versions.  */
 121
 122 #undef  DEFAULT_PCC_STRUCT_RETURN
 123 #define DEFAULT_PCC_STRUCT_RETURN 0
 124
 125 /* True if pragma ms_struct is in effect.  */
 126 extern GTY(()) int darwin_ms_struct;
 127
 128 /* Darwin has a user convenience feature where some linker options are exposed
 129    at the driver level (so one can type "-all_load" instead of "-Wl,-all_load"
 130    or "-Xlinker -all_load").  We retain this, but now these options are all
 131    marked as 'Driver' and we process them as early as possible so that they
 132    get allocated to the right toolchain command.  There are a couple of special
 133    cases where these driver opts are used multiple times, or to control
 134    operations on more than one command (e.g. dynamiclib).  These are handled
 135    specially and we then add %<xxxx specs for the commands that _don't_ need
 136    them.
 137    We keep a couple of cases where a negative option originally appeared after
 138    the positive alternate, potentially overriding it.
 139    When we report an error with %e, it seems necessary to strip the option
 140    before doing so, otherwise it survives to the cc1 command line (%e doesn't
 141    appear to abort the program before this).
 142    Right now there's no mechanism to split up the "variable portion" (%*) of
 143    the matched spec string, so where we have some driver specs that take 2
 144    or 3 arguments, these cannot be processed here, but are deferred until the
 145    LINK_SPEC, where they are copied verbatim.  */
 146
 147 #undef SUBTARGET_DRIVER_SELF_SPECS
 148 #define SUBTARGET_DRIVER_SELF_SPECS                                     \
 149   "%{static|fapple-kext|mkernel:%{shared|dynamic|dynamiclib: \
 150      %econflicting code generation switches}}",\
 151   "%{shared|dynamiclib:-Xlinker -dylib \
 152      %{allowable_client*:-Xlinker -allowable_client -Xlinker %*} \
 153        %<allowable_client* \
 154      %{bundle_loader*: %<bundle_loader* \
 155        %e-bundle_loader not allowed with -dynamiclib} \
 156      %{client_name*: %<client_name* \
 157        %e-client_name not allowed with -dynamiclib} \
 158      %{compatibility_version*:\
 159        -Xlinker -dylib_compatibility_version -Xlinker %*} \
 160        %<compatibility_version* \
 161      %{current_version*:-Xlinker -dylib_current_version -Xlinker %*} \
 162        %<current_version* \
 163      %{install_name*:-Xlinker -dylib_install_name -Xlinker %* } \
 164        %<install_name* \
 165      %{keep_private_externs: %<keep_private_externs \
 166        %e-keep_private_externs not allowed with -dynamiclib} \
 167      %{private_bundle: %<private_bundle \
 168        %e-private_bundle not allowed with -dynamiclib} \
 169     }",                                                 \
 170   "%{!dynamiclib:%{!shared: \
 171      %{bundle_loader*:-Xlinker -bundle_loader -Xlinker %*} \
 172        %<bundle_loader* \
 173      %{client_name*:-Xlinker -client_name -Xlinker %*} \
 174        %<client_name* \
 175      %{compatibility_version*: %<compatibility_version* \
 176        %e-compatibility_version only allowed with -dynamiclib} \
 177      %{current_version*: %<current_version* \
 178        %e-current_version only allowed with -dynamiclib} \
 179      %{install_name*: %<install_name* \
 180        %e-install_name only allowed with -dynamiclib} \
 181      %{keep_private_externs:-Xlinker -keep_private_externs} \
 182        %<keep_private_externs \
 183      %{private_bundle:-Xlinker -private_bundle} \
 184        %<private_bundle \
 185     }}",                                                                        \
 186   "%{all_load:-Xlinker -all_load} %<all_load",                          \
 187   "%{arch_errors_fatal:-Xlinker -arch_errors_fatal} \
 188     %<arch_errors_fatal",                                               \
 189   "%{bind_at_load:-Xlinker -bind_at_load} %<bind_at_load",              \
 190   "%{bundle:%{!dynamiclib:%{!shared: -Xlinker -bundle; \
 191                             :%e-bundle not allowed with -shared}; \
 192               :%e-bundle not allowed with -dynamiclib}}",               \
 193   "%{dead_strip:-Xlinker -dead_strip} %<dead_strip",                    \
 194   "%{dylib_file*:-Xlinker -dylib_file -Xlinker %*} %<dylib_file*",      \
 195   "%{dylinker:-Xlinker -dylinker} %<dylinker",                          \
 196   "%{dylinker_install_name*:-Xlinker -dylinker_install_name -Xlinker %*}\
 197     %<dylinker_install_name*",                                          \
 198   "%{exported_symbols_list*:-Xlinker -exported_symbols_list -Xlinker %*}\
 199     %<exported_symbols_list",                                           \
 200   "%{findirect-virtual-calls: -fapple-kext} %<findirect-virtual-calls", \
 201   "%{fterminated-vtables: -fapple-kext} %<fterminated-vtables",         \
 202   "%{fapple-kext|mkernel:-static}",                                     \
 203   "%{filelist*:-Xlinker -filelist -Xlinker %*} %<filelist*",            \
 204   "%{flat_namespace:-Xlinker -flat_namespace} %<flat_namespace",        \
 205   "%{force_cpusubtype_ALL:-Xassembler -force_cpusubtype_ALL} ",         \
 206   "%{force_flat_namespace: \
 207      %{!dynamiclib:-Xlinker -force_flat_namespace; \
 208        :%e-force_flat_namespace not allowed with -dynamiclib}} \
 209     %<force_flat_namespace",                                            \
 210   "%{framework*:-Xlinker -framework -Xlinker %*} %<framework*",         \
 211   "%{gfull:-g -fno-eliminate-unused-debug-symbols} %<gfull",            \
 212   "%{gused:-g -feliminate-unused-debug-symbols} %<gused",               \
 213   "%{gsplit-dwarf:%ngsplit-dwarf is not supported on this platform} \
 214     %<gsplit-dwarf",                                                    \
 215   "%{headerpad_max_install_names:-Xlinker -headerpad_max_install_names}\
 216     %<headerpad_max_install_names",                                     \
 217   "%{image_base*:-Xlinker -image_base -Xlinker %*} %<image_base*",      \
 218   "%{init*:-Xlinker -init -Xlinker %*} %<init*",                        \
 219   "%{multi_module:-Xlinker -multi_module} %<multi_module",              \
 220   "%{multiply_defined*:-Xlinker -multiply_defined -Xlinker %*} ",       \
 221   "%{multiplydefinedunused*:\
 222      -Xlinker -multiply_defined_unused -Xlinker %*} \
 223      %<multiplydefinedunused* ",                                        \
 224   "%{no_dead_strip_inits_and_terms:\
 225      -Xlinker -no_dead_strip_inits_and_terms} \
 226      %<no_dead_strip_inits_and_terms",                                  \
 227   "%{nofixprebinding:-Xlinker -nofixprebinding} %<nofixprebinding",     \
 228   "%{nomultidefs:-Xlinker -nomultidefs} %<nomultidefs",                 \
 229   "%{pagezero_size*:-Xlinker -pagezero_size -Xlinker %*} \
 230     %<pagezero_size",                                                   \
 231   "%{prebind:-Xlinker -prebind} %<prebind",                             \
 232   "%{noprebind:-Xlinker -noprebind} %<noprebind",                       \
 233   "%{prebind_all_twolevel_modules:\
 234      -Xlinker -prebind_all_twolevel_modules} \
 235      %<prebind_all_twolevel_modules",                                   \
 236   "%{preload:-Xlinker -preload} %<preload",                             \
 237   "%{read_only_relocs*:-Xlinker -read_only_relocs -Xlinker %*} \
 238      %<read_only_relocs*",                                              \
 239   "%{rpath*: -Xlinker -rpath -Xlinker %*}",                             \
 240   "%{seg_addr_table_filename*: \
 241      -Xlinker -seg_addr_table_filename -Xlinker %*} \
 242      %<seg_addr_table_filename*",                                       \
 243   "%{seg_addr_table*:-Xlinker -seg_addr_table -Xlinker %*} \
 244      %<seg_addr_table*",                                                \
 245   "%{seg1addr*:-Xlinker -image_base -Xlinker %*} %<seg1addr*",          \
 246   "%{seglinkedit:-Xlinker -seglinkedit} %<seglinkedit",                 \
 247   "%{noseglinkedit:-Xlinker -noseglinkedit} %<noseglinkedit",           \
 248   "%{segs_read_only_addr*:-Xlinker -segs_read_only_addr -Xlinker %*} \
 249     %<segs_read_only_addr*",                                            \
 250   "%{segs_read_write_addr*:-Xlinker -segs_read_write_addr -Xlinker %*} \
 251     %<segs_read_write_addr*",                                           \
 252   "%{single_module:-Xlinker -single_module} %<single_module",           \
 253   "%{sub_library*:-Xlinker -sub_library -Xlinker %*} %<sub_library*",   \
 254   "%{sub_umbrella*:-Xlinker -sub_umbrella -Xlinker %*} %<sub_umbrella*",\
 255   "%{twolevel_namespace:-Xlinker -twolevel_namespace} \
 256      %<twolevel_namespace",                                             \
 257   "%{twolevel_namespace_hints:-Xlinker -twolevel_namespace_hints} \
 258      %<twolevel_namespace_hints",                                       \
 259   "%{umbrella*:-Xlinker -umbrella -Xlinker %*} %<umbrella*",            \
 260   "%{undefined*:-Xlinker -undefined -Xlinker %*} %<undefined*",         \
 261   "%{unexported_symbols_list*:\
 262      -Xlinker -unexported_symbols_list -Xlinker %*} \
 263      %<unexported_symbols_list*",                                       \
 264   "%{weak_reference_mismatches*:\
 265     -Xlinker -weak_reference_mismatches -Xlinker %*} \
 266     %<weak_reference_mismatches*",                                      \
 267   "%{whyload:-Xlinker -whyload} %<whyload",                             \
 268   "%{whatsloaded:-Xlinker -whatsloaded} %<whatsloaded",                 \
 269   "%{w:-Xlinker -w}",                                                   \
 270   "%<y*",                                                               \
 271   "%<Mach "
 272
 273 #if LD64_HAS_DEMANGLE
 274 #define DARWIN_LD_DEMANGLE " -demangle "
 275 #else
 276 #define DARWIN_LD_DEMANGLE ""
 277 #endif
 278
 279 #if LD64_HAS_EXPORT_DYNAMIC
 280 #define DARWIN_RDYNAMIC "%{rdynamic:-export_dynamic}"
 281 #else
 282 #define DARWIN_RDYNAMIC "%{rdynamic:%nrdynamic is not supported}"
 283 #endif
 284
 285 #if LD64_HAS_PLATFORM_VERSION
 286 #define DARWIN_PLATFORM_ID \
 287   "%{mmacosx-version-min=*: -platform_version macos %* 0.0} "
 288 #else
 289 #define DARWIN_PLATFORM_ID \
 290   "%{mmacosx-version-min=*:-macosx_version_min %*} "
 291 #endif
 292
 293 /* Code built with mdynamic-no-pic does not support PIE/PIC, so  we disallow
 294    these combinations; we also ensure that the no_pie option is passed to
 295    ld64 on system versions that default to PIE when mdynamic-no-pic is given.
 296    FIXME: we should check that the linker supports the -pie and -no_pie.
 297    options.  */
 298 #define DARWIN_PIE_SPEC \
 299 "%{pie|fpie|fPIE:\
 300    %{mdynamic-no-pic: \
 301      %n'-mdynamic-no-pic' overrides '-pie', '-fpie' or '-fPIE'; \
 302      :%:version-compare(>= 10.5 mmacosx-version-min= -pie) }; \
 303    mdynamic-no-pic:%:version-compare(>= 10.7 mmacosx-version-min= -no_pie) } "
 304
 305 #define DARWIN_NOPIE_SPEC \
 306 "%{no-pie|fno-pie|fno-PIE: \
 307    %:version-compare(>= 10.7 mmacosx-version-min= -no_pie) }"
 308
 309 #define DARWIN_CC1_SPEC                                                 \
 310   "%<dynamic %<force_cpusubtype_ALL %<multiply_defined* %<dynamiclib"
 311
 312 /* When we are using embedded runpaths DARWIN_AT_RPATH is set. */
 313 #if DARWIN_AT_RPATH
 314 # define DARWIN_RPATH_LINK \
 315 "%{!r:%{!nostdlib:%{!nodefaultrpaths:%(darwin_rpaths)}}}"
 316 # define DARWIN_SHARED_LIBGCC "-lgcc_s.1.1"
 317 #else
 318 # define DARWIN_RPATH_LINK ""
 319 # define DARWIN_SHARED_LIBGCC \
 320 "%:version-compare(!> 10.11 mmacosx-version-min= -lgcc_s.1.1) \
 321  %:version-compare(>= 10.11 mmacosx-version-min= -lemutls_w) "
 322 #endif
 323
 324 /* We might elect to add a path even when this compiler does not use embedded
 325    run paths, so that we can use libraries from an alternate compiler that is
 326    using embedded runpaths.  */
 327 #if DARWIN_DO_EXTRA_RPATH
 328 # define DARWIN_EXTRA_RPATH \
 329 "%{!r:%{!nostdlib:%{!nodefaultrpaths:\
 330     %:version-compare(>= 10.5 mmacosx-version-min= -rpath) \
 331     %:version-compare(>= 10.5 mmacosx-version-min= " DARWIN_ADD_RPATH ") \
 332   }}}"
 333 #else
 334 # define DARWIN_EXTRA_RPATH ""
 335 #endif
 336
 337 #define SUBSUBTARGET_OVERRIDE_OPTIONS                                   \
 338   do {                                                                  \
 339     darwin_override_options ();                                         \
 340   } while (0)
 341
 342 #define SUBTARGET_C_COMMON_OVERRIDE_OPTIONS do {                        \
 343     if (flag_mkernel || flag_apple_kext)                                \
 344       {                                                                 \
 345         if (flag_use_cxa_atexit == 2)                                   \
 346           flag_use_cxa_atexit = 0;                                      \
 347         /* kexts should always be built without the coalesced sections  \
 348            because the kernel loader doesn't grok such sections.  */    \
 349         flag_weak = 0;                                                  \
 350         /* No RTTI in kexts.  */                                        \
 351         flag_rtti = 0;                                                  \
 352       }                                                                 \
 353   } while (0)
 354
 355 /* Machine dependent cpp options.  Don't add more options here, add
 356    them to darwin_cpp_builtins in darwin-c.cc.  */
 357
 358 #undef  CPP_SPEC
 359 #define CPP_SPEC "%{static:%{!dynamic:-D__STATIC__}}%{!static:-D__DYNAMIC__}" \
 360         " %{pthread:-D_REENTRANT} "
 361
 362 /* This is a fix for PR41260 by passing -no_compact_unwind on darwin10 and
 363    later until the assembler, linker and libunwind are able to deal with the
 364    output from GCC.
 365
 366    FIXME: we should check that the linker supports the option.
 367 */
 368
 369 #define DARWIN_NOCOMPACT_UNWIND \
 370 " %:version-compare(>= 10.6 mmacosx-version-min= -no_compact_unwind) "
 371
 372 /* In Darwin linker specs we can put -lcrt0.o and ld will search the library
 373    path for crt0.o or -lcrtx.a and it will search for libcrtx.a.  As for
 374    other ports, we can also put xxx.{o,a}%s and get the appropriate complete
 375    startfile absolute directory.  This latter point is important when we want
 376    to override ld's rule of .dylib being found ahead of .a and the user wants
 377    the convenience library to be linked.  */
 378
 379 /* The LINK_COMMAND spec is mostly a clone of the standard LINK_COMMAND_SPEC,
 380    plus precomp, libtool, and fat build additions.
 381
 382    In general, random Darwin linker flags should go into LINK_SPEC
 383    instead of LINK_COMMAND_SPEC.  The command spec is better for
 384    specifying the handling of options understood by generic Unix
 385    linkers, and for positional arguments like libraries.  */
 386
 387 #define LINK_COMMAND_SPEC_A \
 388    "%{!c:%{!E:%{!S:%{!M:%{!MM:%{!fsyntax-only:%{!fdump=*: \
 389     %(linker)" \
 390     DARWIN_LD_DEMANGLE \
 391     LINK_PLUGIN_SPEC \
 392     "%{flto*:%<fcompare-debug*} \
 393      %{flto} %{fno-lto} %{flto=*} \
 394     %l " \
 395     DARWIN_PLATFORM_ID \
 396     LINK_COMPRESS_DEBUG_SPEC \
 397    "%X %{s} %{t} %{Z} %{u*} \
 398     %{e*} %{r} \
 399     %{o*}%{!o:-o a.out} \
 400     %{!r:%{!nostdlib:%{!nostartfiles:%S}}} \
 401     %{L*} %(link_libgcc) %o \
 402     %{!r:%{!nostdlib:%{!nodefaultlibs:\
 403       %{fprofile-arcs|fprofile-generate*|coverage:-lgcov} \
 404       %{fopenacc|fopenmp|%:gt(%{ftree-parallelize-loops=*:%*} 1): \
 405         %{static|static-libgcc|static-libstdc++|static-libgfortran: \
 406           libgomp.a%s; : -lgomp }} \
 407       %{fgnu-tm: \
 408         %{static|static-libgcc|static-libstdc++|static-libgfortran: \
 409           libitm.a%s; : -litm }} \
 410       %{%:sanitize(address): -lasan } \
 411       %{%:sanitize(undefined): -lubsan } \
 412       %(link_ssp) \
 413       %:version-compare(>< 10.6 10.7 mmacosx-version-min= -ld10-uwfef) \
 414       %(link_gcc_c_sequence) \
 415       %{!nodefaultexport:%{dylib|dynamiclib|bundle: \
 416         %:version-compare(>= 10.11 asm_macosx_version_min= -U) \
 417         %:version-compare(>= 10.11 asm_macosx_version_min= ___emutls_get_address) \
 418         %:version-compare(>= 10.11 asm_macosx_version_min= -exported_symbol) \
 419         %:version-compare(>= 10.11 asm_macosx_version_min= ___emutls_get_address) \
 420         %:version-compare(>= 10.11 asm_macosx_version_min= -U) \
 421         %:version-compare(>= 10.11 asm_macosx_version_min= ___emutls_register_common) \
 422         %:version-compare(>= 10.11 asm_macosx_version_min= -exported_symbol) \
 423         %:version-compare(>= 10.11 asm_macosx_version_min= ___emutls_register_common) \
 424       }} \
 425     }}}\
 426     %{!r:%{!nostdlib:%{!nostartfiles:%E}}} %{T*} %{F*} "\
 427     DARWIN_PIE_SPEC \
 428     DARWIN_NOPIE_SPEC \
 429     DARWIN_RDYNAMIC \
 430     DARWIN_NOCOMPACT_UNWIND \
 431     DARWIN_EXTRA_RPATH \
 432     DARWIN_RPATH_LINK \
 433     "}}}}}}} %<pie %<no-pie %<rdynamic %<X %<rpath %<nodefaultrpaths "
 434
 435 /* Spec that controls whether the debug linker is run automatically for
 436    a link step.  This needs to be done if there is a source file on the
 437    command line which will result in a temporary object (and debug is
 438    enabled).  */
 439
 440 #define DSYMUTIL_SPEC \
 441   "%{!c:%{!E:%{!S:%{!r:%{!M:%{!MM:%{!fsyntax-only:%{!fdump=*:\
 442      %{g*:%{!gctf:%{!gbtf:%{%:debug-level-gt(0): -idsym \
 443        %{.c|.cc|.C|.cpp|.cp|.c++|.cxx|.CPP|.m|.mm|.s|.f|.f90|\
 444          .f95|.f03|.f77|.for|.F|.F90|.F95|.F03|.d: -dsym }\
 445       }}}}\
 446    }}}}}}}}"
 447
 448 #define LINK_COMMAND_SPEC LINK_COMMAND_SPEC_A DSYMUTIL_SPEC
 449
 450 /* Tell collect2 to run dsymutil for us as necessary.  */
 451 #define COLLECT_RUN_DSYMUTIL 1
 452
 453 /* We only want one instance of %G, since libSystem (Darwin's -lc) does not
 454    depend on libgcc. */
 455 #undef  LINK_GCC_C_SEQUENCE_SPEC
 456 #define LINK_GCC_C_SEQUENCE_SPEC \
 457  "%G %{!nolibc:%L} "
 458
 459 /* ld64 supports a sysroot, it just has a different name and there's no easy
 460    way to check for it at config time.  */
 461 #undef HAVE_LD_SYSROOT
 462 #define HAVE_LD_SYSROOT 1
 463 /* It seems the only (working) way to get a space after %R is to append a
 464    dangling '/'.  */
 465 #define SYSROOT_SPEC "%{!isysroot*:-syslibroot %R/ } "
 466
 467 /* Do the same as clang, for now, and insert the sysroot for ld when an
 468    isysroot is specified.  */
 469 #define LINK_SYSROOT_SPEC "%{isysroot*:-syslibroot %*} "
 470
 471 /* Suppress the addition of extra prefix paths when a sysroot is in use.  */
 472 #define STANDARD_STARTFILE_PREFIX_1 ""
 473 #define STANDARD_STARTFILE_PREFIX_2 ""
 474
 475
 476 /* Please keep the random linker options in alphabetical order.
 477    Note that options taking arguments may appear multiple times on a command
 478    line with different arguments each time, so put a * after their names so
 479    all of them get passed.  */
 480 #define LINK_SPEC  \
 481   "%{static}%{!static:%{!dynamic:-dynamic}} \
 482    %:remove-outfile(-ldl) \
 483    %:remove-outfile(-lm) \
 484    %:remove-outfile(-lpthread) \
 485    %{fgnu-runtime: %{static|static-libgcc: \
 486                      %:replace-outfile(-lobjc libobjc-gnu.a%s); \
 487                     :%:replace-outfile(-lobjc -lobjc-gnu )}}\
 488    %{static|static-libgcc|static-libgfortran:%:replace-outfile(-lgfortran libgfortran.a%s)}\
 489    %{static|static-libgcc|static-libquadmath:%:replace-outfile(-lquadmath libquadmath.a%s)}\
 490    %{static|static-libgcc|static-libphobos:%:replace-outfile(-lgphobos libgphobos.a%s)}\
 491    %{static|static-libgcc|static-libstdc++|static-libgfortran:%:replace-outfile(-lgomp libgomp.a%s)}\
 492    %{static|static-libgcc|static-libstdc++:%:replace-outfile(-lstdc++ libstdc++.a%s)}\
 493    %{static|static-libgm2:%:replace-outfile(-lm2pim libm2pim.a%s)}\
 494    %{static|static-libgm2:%:replace-outfile(-lm2iso libm2iso.a%s)}\
 495    %{static|static-libgm2:%:replace-outfile(-lm2min libm2min.a%s)}\
 496    %{static|static-libgm2:%:replace-outfile(-lm2log libm2log.a%s)}\
 497    %{static|static-libgm2:%:replace-outfile(-lm2cor libm2cor.a%s)}\
 498   %{force_cpusubtype_ALL:-arch %(darwin_arch)} \
 499    %{!force_cpusubtype_ALL:-arch %(darwin_subarch)} "\
 500    LINK_SYSROOT_SPEC \
 501    "%{!multiply_defined*:%{shared-libgcc: \
 502      %:version-compare(< 10.5 mmacosx-version-min= -multiply_defined) \
 503      %:version-compare(< 10.5 mmacosx-version-min= suppress) }} \
 504    %{sectalign*} %{sectcreate*} %{sectobjectsymbols*}  %{sectorder*} \
 505    %{segaddr*} %{segcreate*} %{segprot*} "
 506
 507 /* Machine dependent libraries.  */
 508
 509 #define LIB_SPEC "%{!static:-lSystem}"
 510
 511 /* Note that by default, -lgcc_eh (which provides a statically-linked unwinder)
 512    is not used. This is because, in general, we need to unwind through system
 513    libraries that are linked with the shared unwinder in libunwind (or libgcc_s
 514    for OSX 10.4/5 [darwin8/9]).
 515
 516    When -static-libgcc is forced: < 10.6, use the unwinder in libgcc_eh (and
 517    find the emultls impl. there too).
 518
 519    For -static-libgcc: >= 10.6, the unwinder *still* comes from libSystem and
 520    we find the emutls impl from lemutls_w. In either case, the builtins etc.
 521    are linked from -lgcc.  The eh library is still available so that it could
 522    be specified explicitly if there is some reason to do so.
 523
 524    When we have specified shared-libgcc or any case that might require
 525    exceptions, we pull the libgcc content (including emulated tls) from
 526    -lgcc_s.1.1 in GCC and the unwinder from /usr/lib/libgcc_s.1 for < 10.6 and
 527    libSystem for >= 10.6 respectively.
 528    Otherwise, we just link the emutls/builtins from convenience libs.
 529
 530    We have to work around that DYLD_XXXX are disabled in macOS 10.11+ which
 531    means that any bootstrap trying to use a shared libgcc with a bumped SO-
 532    name will fail.  This means that we do not accept shared libgcc for these
 533    versions (the primary reason for forcing a shared libgcc was that it
 534    contained the unwinder on Darwin8 and 9).
 535
 536    When using the shared version of gcc_s.1.1 the unwinder is provided by:
 537      * Prior to 10.3.9, then we have to link the static eh lib, since there
 538        is no shared unwinder version on the system.
 539      * from 10.3.9 to 10.5, from /usr/lib/libgcc_s.1.dylib
 540      * from 10.6 onwards, from libSystem.dylib
 541 */
 542 #undef REAL_LIBGCC_SPEC
 543 #define REAL_LIBGCC_SPEC \
 544 "%{static-libgcc|static:                                                  \
 545     %:version-compare(!> 10.6 mmacosx-version-min= -lgcc_eh)              \
 546     %:version-compare(>= 10.6 mmacosx-version-min= -lemutls_w);           \
 547    shared-libgcc|fexceptions|fobjc-exceptions|fgnu-runtime:               \
 548    " DARWIN_SHARED_LIBGCC "                                               \
 549     %:version-compare(!> 10.3.9 mmacosx-version-min= -lgcc_eh)            \
 550     %:version-compare(>< 10.3.9 10.5 mmacosx-version-min= -lgcc_s.10.4)   \
 551     %:version-compare(>< 10.5 10.6 mmacosx-version-min= -lgcc_s.10.5);    \
 552    : -lemutls_w                                                           \
 553   } -lgcc "
 554
 555 /* We specify crt0.o as -lcrt0.o so that ld will search the library path.  */
 556
 557 #undef  STARTFILE_SPEC
 558 #define STARTFILE_SPEC                                                      \
 559 "%{dynamiclib|shared: %(darwin_dylib1) %{fgnu-tm: -lcrttms.o}}             \
 560  %{!dynamiclib:%{!shared:%{bundle:%(darwin_bundle1)}                        \
 561      %{!bundle:%{pg:%{static:-lgcrt0.o}                                     \
 562                      %{!static:%{object:-lgcrt0.o}                          \
 563                                %{!object:%{preload:-lgcrt0.o}               \
 564                                  %{!preload:-lgcrt1.o                       \
 565                                  %:version-compare(>= 10.8 mmacosx-version-min= -no_new_main) \
 566                                  %(darwin_crt2)}}}}    \
 567                 %{!pg:%{static:-lcrt0.o}                                    \
 568                       %{!static:%{object:-lcrt0.o}                          \
 569                                 %{!object:%{preload:-lcrt0.o}               \
 570                                   %{!preload: %(darwin_crt1)                \
 571                                               %(darwin_crt2)}}}}}}}         \
 572  %(darwin_crt3) "
 573
 574 /* We want a destructor last in the list.  */
 575 #define TM_DESTRUCTOR "%{fgnu-tm: -lcrttme.o}"
 576 #define ENDFILE_SPEC TM_DESTRUCTOR
 577
 578 #define DARWIN_EXTRA_SPECS                                              \
 579   { "darwin_crt1", DARWIN_CRT1_SPEC },                                  \
 580   { "darwin_crt2", DARWIN_CRT2_SPEC },                                  \
 581   { "darwin_crt3", DARWIN_CRT3_SPEC },                                  \
 582   { "darwin_dylib1", DARWIN_DYLIB1_SPEC },                              \
 583   { "darwin_bundle1", DARWIN_BUNDLE1_SPEC },                            \
 584   { "darwin_rpaths", DARWIN_RPATH_SPEC },
 585
 586 #define DARWIN_CRT1_SPEC                                                \
 587   "%:version-compare(!> 10.5 mmacosx-version-min= -lcrt1.o)             \
 588    %:version-compare(>< 10.5 10.6 mmacosx-version-min= -lcrt1.10.5.o)   \
 589    %:version-compare(>< 10.6 10.8 mmacosx-version-min= -lcrt1.10.6.o)   \
 590    %{fgnu-tm: -lcrttms.o}"
 591
 592 #define DARWIN_CRT2_SPEC ""
 593
 594 /* crt3.o provides __cxa_atexit on systems that don't have it (and a fix
 595    up for faulty versions on 10.4).  Since it's only used with C++, which
 596    requires passing -shared-libgcc, key off that to avoid unnecessarily
 597    adding a destructor to every program built for 10.4 or earlier.  */
 598
 599 #define DARWIN_CRT3_SPEC \
 600 "%{shared-libgcc:%:version-compare(< 10.5 mmacosx-version-min= crt3.o%s)}"
 601
 602 #define DARWIN_DYLIB1_SPEC                                              \
 603   "%:version-compare(!> 10.5 mmacosx-version-min= -ldylib1.o)           \
 604    %:version-compare(>< 10.5 10.6 mmacosx-version-min= -ldylib1.10.5.o)"
 605
 606 #define DARWIN_BUNDLE1_SPEC \
 607 "%{!static:%:version-compare(< 10.6 mmacosx-version-min= -lbundle1.o)   \
 608            %{fgnu-tm: -lcrttms.o}}"
 609
 610 #if DARWIN_AT_RPATH
 611 /* A default rpath, that picks up dependent libraries installed in the same
 612    director as one being loaded.  */
 613 #define DARWIN_RPATH_SPEC \
 614   "%:version-compare(>= 10.5 mmacosx-version-min= -rpath) \
 615    %:version-compare(>= 10.5 mmacosx-version-min= @loader_path) \
 616    %P "
 617 #else
 618 #define DARWIN_RPATH_SPEC ""
 619 #endif
 620
 621 #ifdef HAVE_AS_MMACOSX_VERSION_MIN_OPTION
 622 /* Emit macosx version (but only major).  */
 623 #define ASM_MMACOSX_VERSION_MIN_SPEC \
 624 "%{asm_macosx_version_min=*: -mmacosx-version-min=%* } \
 625    %<asm_macosx_version_min=* "
 626 #else
 627 #define ASM_MMACOSX_VERSION_MIN_SPEC " %<asm_macosx_version_min=* "
 628 #endif
 629
 630 #if HAVE_GNU_AS
 631 /* The options are added in gcc.cc for this case.  */
 632 #define ASM_OPTIONS ""
 633 #else
 634 /* When we detect that we're cctools or llvm as, we need to insert the right
 635    additional options.  Actually, currently these are the same as GAS.  */
 636 #define ASM_OPTIONS "%{v} %{w:-W} %{I*}"
 637 #endif
 638
 639 /* Default Darwin ASM_SPEC, very simple. */
 640 #define ASM_SPEC \
 641 "%{static} -arch %(darwin_arch) " \
 642 ASM_OPTIONS ASM_MMACOSX_VERSION_MIN_SPEC
 643
 644 #define ASM_DEBUG_SPEC  ""
 645 #undef  ASM_DEBUG_OPTION_SPEC
 646 #define ASM_DEBUG_OPTION_SPEC   ""
 647
 648 #define ASM_FINAL_SPEC \
 649   "%{gsplit-dwarf:%ngsplit-dwarf is not supported on this platform} \
 650      %<gsplit-dwarf"
 651
 652 /* We now require C++11 to bootstrap and newer tools than those based on
 653    stabs, so require DWARF-2, even if stabs is supported by the assembler.  */
 654
 655 #define DWARF2_DEBUGGING_INFO 1
 656 #define PREFERRED_DEBUGGING_TYPE DWARF2_DEBUG
 657
 658 #define DEBUG_FRAME_SECTION       "__DWARF,__debug_frame,regular,debug"
 659 #define DEBUG_INFO_SECTION        "__DWARF,__debug_info,regular,debug"
 660 #define DEBUG_ABBREV_SECTION      "__DWARF,__debug_abbrev,regular,debug"
 661 #define DEBUG_ARANGES_SECTION     "__DWARF,__debug_aranges,regular,debug"
 662 #define DEBUG_MACINFO_SECTION     "__DWARF,__debug_macinfo,regular,debug"
 663 #define DEBUG_LINE_SECTION        "__DWARF,__debug_line,regular,debug"
 664 #define DEBUG_LOC_SECTION         "__DWARF,__debug_loc,regular,debug"
 665 #define DEBUG_LOCLISTS_SECTION    "__DWARF,__debug_loclists,regular,debug"
 666
 667 #define DEBUG_STR_SECTION         "__DWARF,__debug_str,regular,debug"
 668 #define DEBUG_STR_OFFSETS_SECTION "__DWARF,__debug_str_offs,regular,debug"
 669 #define DEBUG_RANGES_SECTION      "__DWARF,__debug_ranges,regular,debug"
 670 #define DEBUG_RNGLISTS_SECTION    "__DWARF,__debug_rnglists,regular,debug"
 671 #define DEBUG_MACRO_SECTION       "__DWARF,__debug_macro,regular,debug"
 672
 673 #define DEBUG_LTO_INFO_SECTION    "__GNU_DWARF_LTO,__debug_info,regular,debug"
 674 #define DEBUG_LTO_ABBREV_SECTION  "__GNU_DWARF_LTO,__debug_abbrev,regular,debug"
 675 #define DEBUG_LTO_MACINFO_SECTION "__GNU_DWARF_LTO,__debug_macinfo,regular,debug"
 676 #define DEBUG_LTO_LINE_SECTION    "__GNU_DWARF_LTO,__debug_line,regular,debug"
 677 #define DEBUG_LTO_STR_SECTION     "__GNU_DWARF_LTO,__debug_str,regular,debug"
 678 #define DEBUG_LTO_MACRO_SECTION   "__GNU_DWARF_LTO,__debug_macro,regular,debug"
 679
 680 #define TARGET_WANT_DEBUG_PUB_SECTIONS true
 681 #define DEBUG_PUBNAMES_SECTION   ((debug_generate_pub_sections == 2) \
 682                                ? "__DWARF,__debug_gnu_pubn,regular,debug" \
 683                                : "__DWARF,__debug_pubnames,regular,debug")
 684
 685 #define DEBUG_PUBTYPES_SECTION   ((debug_generate_pub_sections == 2) \
 686                                ? "__DWARF,__debug_gnu_pubt,regular,debug" \
 687                                : "__DWARF,__debug_pubtypes,regular,debug")
 688
 689 /* GCC's definition of 'one_only' is the same as its definition of 'weak'.  */
 690 #define MAKE_DECL_ONE_ONLY(DECL) (DECL_WEAK (DECL) = 1)
 691
 692 /* Mach-O supports 'weak imports', and 'weak definitions' in coalesced
 693    sections.  machopic_select_section ensures that weak variables go in
 694    coalesced sections.  Weak aliases (or any other kind of aliases) are
 695    not supported.  Weak symbols that aren't visible outside the .s file
 696    are not supported.  */
 697 #define ASM_WEAKEN_DECL(FILE, DECL, NAME, ALIAS)                        \
 698   do {                                                                  \
 699     if (ALIAS)                                                          \
 700       {                                                                 \
 701         warning (0, "alias definitions not supported in Mach-O; ignored");      \
 702         break;                                                          \
 703       }                                                                 \
 704                                                                         \
 705     if (! DECL_EXTERNAL (DECL) && TREE_PUBLIC (DECL))                   \
 706       targetm.asm_out.globalize_label (FILE, NAME);                     \
 707     if (DECL_EXTERNAL (DECL))                                           \
 708       fputs ("\t.weak_reference ", FILE);                               \
 709     else if (lookup_attribute ("weak_import", DECL_ATTRIBUTES (DECL)))  \
 710       break;                                                            \
 711     else if (TREE_PUBLIC (DECL))                                        \
 712       fputs ("\t.weak_definition ", FILE);                              \
 713     else                                                                \
 714       break;                                                            \
 715     assemble_name (FILE, NAME);                                         \
 716     fputc ('\n', FILE);                                                 \
 717   } while (0)
 718
 719 /* Darwin has the pthread routines in libSystem, which every program
 720    links to, so there's no need for weak-ness for that.  */
 721 #define GTHREAD_USE_WEAK 0
 722
 723 /* On Darwin, we don't (at the time of writing) have linkonce sections
 724    with names, so it's safe to make the class data not comdat.  */
 725 #define TARGET_CXX_CLASS_DATA_ALWAYS_COMDAT hook_bool_void_false
 726
 727 /* For efficiency, on Darwin the RTTI information that is always
 728    emitted in the standard C++ library should not be COMDAT.  */
 729 #define TARGET_CXX_LIBRARY_RTTI_COMDAT hook_bool_void_false
 730
 731 /* We make exception information linkonce. */
 732 #undef TARGET_USES_WEAK_UNWIND_INFO
 733 #define TARGET_USES_WEAK_UNWIND_INFO 1
 734
 735 /* We need to use a nonlocal label for the start of an EH frame: the
 736    Darwin linker requires that a coalesced section start with a label.
 737    Unfortunately, it also requires that 'debug' sections don't contain
 738    labels.  */
 739 #undef FRAME_BEGIN_LABEL
 740 #define FRAME_BEGIN_LABEL (for_eh ? "EH_frame" : "Lframe")
 741
 742 /* Emit a label for the FDE corresponding to DECL.  EMPTY means
 743    emit a label for an empty FDE. */
 744 #define TARGET_ASM_EMIT_UNWIND_LABEL darwin_emit_unwind_label
 745
 746 /* Emit a label to separate the exception table.  */
 747 #define TARGET_ASM_EMIT_EXCEPT_TABLE_LABEL darwin_emit_except_table_label
 748
 749 /* Make an EH (personality or LDSA) symbol indirect as needed.  */
 750 #define TARGET_ASM_MAKE_EH_SYMBOL_INDIRECT darwin_make_eh_symbol_indirect
 751
 752 /* Some of Darwin's unwinders need current frame address state to be reset
 753    after a DW_CFA_restore_state recovers the register values.  */
 754 #undef TARGET_ASM_SHOULD_RESTORE_CFA_STATE
 755 #define TARGET_ASM_SHOULD_RESTORE_CFA_STATE darwin_should_restore_cfa_state
 756
 757 /* Our profiling scheme doesn't LP labels and counter words.  */
 758
 759 #define NO_PROFILE_COUNTERS     1
 760
 761 #undef  INIT_SECTION_ASM_OP
 762 #define INIT_SECTION_ASM_OP ""
 763
 764 #undef  INVOKE__main
 765
 766 #define TARGET_ASM_CONSTRUCTOR  machopic_asm_out_constructor
 767 #define TARGET_ASM_DESTRUCTOR   machopic_asm_out_destructor
 768
 769 /* Always prefix with an underscore.  */
 770
 771 #define USER_LABEL_PREFIX "_"
 772
 773 /* A dummy symbol that will be replaced with the function base name.  */
 774 #define MACHOPIC_FUNCTION_BASE_NAME "<pic base>"
 775
 776 /* Don't output a .file directive.  That is only used by the assembler for
 777    error reporting.  */
 778 #undef  TARGET_ASM_FILE_START_FILE_DIRECTIVE
 779 #define TARGET_ASM_FILE_START_FILE_DIRECTIVE false
 780
 781 #undef  TARGET_ASM_FILE_END
 782 #define TARGET_ASM_FILE_END darwin_file_end
 783
 784 /* Because Mach-O relocations have a counter from 1 to 255 for the
 785    section number they apply to, it is necessary to output all
 786    normal sections before the LTO sections, to make sure that the
 787    sections that may have relocations always have a section number
 788    smaller than 255.  */
 789 #undef  TARGET_ASM_LTO_START
 790 #define TARGET_ASM_LTO_START darwin_asm_lto_start
 791 #undef  TARGET_ASM_LTO_END
 792 #define TARGET_ASM_LTO_END darwin_asm_lto_end
 793
 794 #define ASM_OUTPUT_SKIP(FILE,SIZE)  \
 795   fprintf (FILE, "\t.space " HOST_WIDE_INT_PRINT_UNSIGNED"\n", SIZE)
 796
 797 /* Give ObjC methods pretty symbol names.  */
 798
 799 #undef  OBJC_GEN_METHOD_LABEL
 800 #define OBJC_GEN_METHOD_LABEL(BUF,IS_INST,CLASS_NAME,CAT_NAME,SEL_NAME,NUM) \
 801   do { if (CAT_NAME)                                                    \
 802          sprintf (BUF, "%c[%s(%s) %s]", (IS_INST) ? '-' : '+',          \
 803                   (CLASS_NAME), (CAT_NAME), (SEL_NAME));                \
 804        else                                                             \
 805          sprintf (BUF, "%c[%s %s]", (IS_INST) ? '-' : '+',              \
 806                   (CLASS_NAME), (SEL_NAME));                            \
 807      } while (0)
 808
 809 #undef ASM_DECLARE_OBJECT_NAME
 810 #define ASM_DECLARE_OBJECT_NAME(FILE, NAME, DECL) \
 811         darwin_asm_declare_object_name ((FILE), (NAME), (DECL))
 812
 813 /* The RTTI data (e.g., __ti4name) is common and public (and static),
 814    but it does need to be referenced via indirect PIC data pointers.
 815    The machopic_define_symbol calls are telling the machopic subsystem
 816    that the name *is* defined in this module, so it doesn't need to
 817    make them indirect.  */
 818
 819 #undef ASM_DECLARE_FUNCTION_NAME
 820 #define ASM_DECLARE_FUNCTION_NAME(FILE, NAME, DECL)                     \
 821   do {                                                                  \
 822     const char *xname = NAME;                                           \
 823     if (GET_CODE (XEXP (DECL_RTL (DECL), 0)) != SYMBOL_REF)             \
 824       xname = IDENTIFIER_POINTER (DECL_NAME (DECL));                    \
 825     if (! DECL_WEAK (DECL)                                              \
 826         && ((TREE_STATIC (DECL)                                         \
 827              && (!DECL_COMMON (DECL) || !TREE_PUBLIC (DECL)))           \
 828             || DECL_INITIAL (DECL)))                                    \
 829         machopic_define_symbol (DECL_RTL (DECL));                       \
 830     if ((TREE_STATIC (DECL)                                             \
 831          && (!DECL_COMMON (DECL) || !TREE_PUBLIC (DECL)))               \
 832         || DECL_INITIAL (DECL))                                         \
 833       (* targetm.encode_section_info) (DECL, DECL_RTL (DECL), false);   \
 834     ASM_OUTPUT_FUNCTION_LABEL (FILE, xname, DECL);                      \
 835   } while (0)
 836
 837 #undef TARGET_ASM_DECLARE_CONSTANT_NAME
 838 #define TARGET_ASM_DECLARE_CONSTANT_NAME darwin_asm_declare_constant_name
 839
 840 /* Wrap new method names in quotes so the assembler doesn't gag.
 841    Make Objective-C internal symbols local and in doing this, we need
 842    to accommodate the name mangling done by c++ on file scope locals.  */
 843
 844 int darwin_label_is_anonymous_local_objc_name (const char *name);
 845
 846 #undef  ASM_OUTPUT_LABELREF
 847 #define ASM_OUTPUT_LABELREF(FILE,NAME)                                       \
 848   do {                                                                       \
 849        const char *xname = (NAME);                                           \
 850        if (! strcmp (xname, MACHOPIC_FUNCTION_BASE_NAME))                    \
 851          machopic_output_function_base_name(FILE);                           \
 852        else if (xname[0] == '&' || xname[0] == '*')                          \
 853          {                                                                   \
 854            int len = strlen (xname);                                         \
 855            if (len > 6 && !strcmp ("$stub", xname + len - 5))                \
 856              machopic_validate_stub_or_non_lazy_ptr (xname);                 \
 857            else if (len > 7 && !strcmp ("$stub\"", xname + len - 6))         \
 858              machopic_validate_stub_or_non_lazy_ptr (xname);                 \
 859            else if (len > 14 && !strcmp ("$non_lazy_ptr", xname + len - 13)) \
 860              machopic_validate_stub_or_non_lazy_ptr (xname);                 \
 861            else if (len > 15 && !strcmp ("$non_lazy_ptr\"", xname + len - 14)) \
 862              machopic_validate_stub_or_non_lazy_ptr (xname);                 \
 863            if (xname[1] != '"' && name_needs_quotes (&xname[1]))             \
 864              fprintf (FILE, "\"%s\"", &xname[1]);                            \
 865            else                                                              \
 866              fputs (&xname[1], FILE);                                        \
 867          }                                                                   \
 868        else if (xname[0] == '+' || xname[0] == '-')                          \
 869          fprintf (FILE, "\"%s\"", xname);                                    \
 870        else if (darwin_label_is_anonymous_local_objc_name (xname))           \
 871         fprintf (FILE, "%c%s", flag_next_runtime ? 'L' : 'l', xname);        \
 872        else if (xname[0] != '"' && name_needs_quotes (xname))                \
 873          asm_fprintf (FILE, "\"%U%s\"", xname);                              \
 874        else                                                                  \
 875          asm_fprintf (FILE, "%U%s", xname);                                  \
 876   } while (0)
 877
 878 /* Output before executable code.  */
 879 #undef TEXT_SECTION_ASM_OP
 880 #define TEXT_SECTION_ASM_OP "\t.text"
 881
 882 /* Output before writable data.  */
 883
 884 #undef DATA_SECTION_ASM_OP
 885 #define DATA_SECTION_ASM_OP "\t.data"
 886
 887 #undef  ALIGN_ASM_OP
 888 #define ALIGN_ASM_OP            ".align"
 889
 890 #undef  ASM_OUTPUT_ALIGN
 891 #define ASM_OUTPUT_ALIGN(FILE,LOG)      \
 892   if ((LOG) != 0)                       \
 893     fprintf (FILE, "\t%s\t%d\n", ALIGN_ASM_OP, (LOG))
 894
 895 /* The maximum alignment which the object file format can support in bits
 896    which depends on the OS version and whether the object is a common
 897    variable.  */
 898
 899 #undef  MAX_OFILE_ALIGNMENT
 900 #define MAX_OFILE_ALIGNMENT ((1U << L2_MAX_OFILE_ALIGNMENT) * 8U)
 901
 902 /*  These are the three variants that emit referenced blank space.  */
 903 #define ASM_OUTPUT_ALIGNED_BSS(FILE, DECL, NAME, SIZE, ALIGN)           \
 904         darwin_output_aligned_bss ((FILE), (DECL), (NAME), (SIZE), (ALIGN))
 905
 906 #undef  ASM_OUTPUT_ALIGNED_DECL_LOCAL
 907 #define ASM_OUTPUT_ALIGNED_DECL_LOCAL(FILE, DECL, NAME, SIZE, ALIGN)    \
 908         darwin_asm_output_aligned_decl_local                            \
 909                                   ((FILE), (DECL), (NAME), (SIZE), (ALIGN))
 910
 911 #undef  ASM_OUTPUT_ALIGNED_DECL_COMMON
 912 #define ASM_OUTPUT_ALIGNED_DECL_COMMON(FILE, DECL, NAME, SIZE, ALIGN)   \
 913         darwin_asm_output_aligned_decl_common                           \
 914                                    ((FILE), (DECL), (NAME), (SIZE), (ALIGN))
 915
 916 /* The generic version, archs should over-ride where required.  */
 917 #define MACHOPIC_NL_SYMBOL_PTR_SECTION ".non_lazy_symbol_pointer"
 918
 919 /* Declare the section variables.  */
 920 #ifndef USED_FOR_TARGET
 921 enum darwin_section_enum {
 922 #define DEF_SECTION(NAME, FLAGS, DIRECTIVE, OBJC) NAME,
 923 #include "darwin-sections.def"
 924 #undef DEF_SECTION
 925   NUM_DARWIN_SECTIONS
 926 };
 927 extern GTY(()) section * darwin_sections[NUM_DARWIN_SECTIONS];
 928 #endif
 929
 930 #undef  TARGET_ASM_SELECT_SECTION
 931 #define TARGET_ASM_SELECT_SECTION machopic_select_section
 932
 933 #undef  TARGET_ASM_FUNCTION_SECTION
 934 #define TARGET_ASM_FUNCTION_SECTION darwin_function_section
 935
 936 #undef  TARGET_ASM_SELECT_RTX_SECTION
 937 #define TARGET_ASM_SELECT_RTX_SECTION machopic_select_rtx_section
 938 #undef  TARGET_ASM_UNIQUE_SECTION
 939 #define TARGET_ASM_UNIQUE_SECTION darwin_unique_section
 940 #undef  TARGET_ASM_FUNCTION_RODATA_SECTION
 941 #define TARGET_ASM_FUNCTION_RODATA_SECTION default_no_function_rodata_section
 942
 943 #undef  TARGET_ASM_TM_CLONE_TABLE_SECTION
 944 #define TARGET_ASM_TM_CLONE_TABLE_SECTION darwin_tm_clone_table_section
 945
 946 #undef  TARGET_ASM_RELOC_RW_MASK
 947 #define TARGET_ASM_RELOC_RW_MASK machopic_reloc_rw_mask
 948
 949 /* Globalizing directive for a label.  */
 950 #define GLOBAL_ASM_OP "\t.globl "
 951 #define TARGET_ASM_GLOBALIZE_LABEL darwin_globalize_label
 952
 953 /* Emit an assembler directive to set visibility for a symbol.  Used
 954    to support visibility attribute and Darwin's private extern
 955    feature.  */
 956 #undef TARGET_ASM_ASSEMBLE_VISIBILITY
 957 #define TARGET_ASM_ASSEMBLE_VISIBILITY darwin_assemble_visibility
 958
 959 /* Extra attributes for Darwin.  */
 960 #define SUBTARGET_ATTRIBUTE_TABLE                                            \
 961   /* { name, min_len, max_len, decl_req, type_req, fn_type_req,              \
 962        affects_type_identity, handler, exclude } */                          \
 963   { "apple_kext_compatibility", 0, 0, false, true, false, false,             \
 964     darwin_handle_kext_attribute, NULL },                                    \
 965   { "weak_import", 0, 0, true, false, false, false,                          \
 966     darwin_handle_weak_import_attribute, NULL }
 967
 968 /* Make local constant labels linker-visible, so that if one follows a
 969    weak_global constant, ld64 will be able to separate the atoms.  */
 970 #undef ASM_GENERATE_INTERNAL_LABEL
 971 #define ASM_GENERATE_INTERNAL_LABEL(LABEL,PREFIX,NUM)   \
 972   do {                                                  \
 973     if (strcmp ("LC", PREFIX) == 0)                     \
 974       sprintf (LABEL, "*%s%ld", "lC", (long)(NUM));     \
 975     else if (strcmp ("Lubsan_data", PREFIX) == 0)       \
 976       sprintf (LABEL, "*%s%ld", "lubsan_data", (long)(NUM));\
 977     else if (strcmp ("Lubsan_type", PREFIX) == 0)       \
 978       sprintf (LABEL, "*%s%ld", "lubsan_type", (long)(NUM));\
 979     else if (strcmp ("LASAN", PREFIX) == 0)     \
 980       sprintf (LABEL, "*%s%ld", "lASAN", (long)(NUM));\
 981     else if (strcmp ("LTRAMP", PREFIX) == 0)    \
 982       sprintf (LABEL, "*%s%ld", "lTRAMP", (long)(NUM));\
 983     else                                                \
 984       sprintf (LABEL, "*%s%ld", PREFIX, (long)(NUM));   \
 985   } while (0)
 986
 987 #undef TARGET_ASM_MARK_DECL_PRESERVED
 988 #define TARGET_ASM_MARK_DECL_PRESERVED darwin_mark_decl_preserved
 989
 990 /* Any port using this header needs to define the first available
 991    subtarget symbol bit: SYMBOL_FLAG_SUBT_DEP.  */
 992
 993 /* Is a variable. */
 994 #define MACHO_SYMBOL_FLAG_VARIABLE (SYMBOL_FLAG_SUBT_DEP)
 995 #define MACHO_SYMBOL_VARIABLE_P(RTX) \
 996   ((SYMBOL_REF_FLAGS (RTX) & MACHO_SYMBOL_FLAG_VARIABLE) != 0)
 997
 998 /* Set on a symbol that must be indirected, even when there is a
 999    definition in the TU.  The ABI mandates that common symbols are so
1000    indirected, as are weak.  If 'fix-and-continue' is operational then
1001    data symbols might also be.  */
1002
1003 #define MACHO_SYMBOL_FLAG_MUST_INDIRECT ((SYMBOL_FLAG_SUBT_DEP) << 1)
1004 #define MACHO_SYMBOL_MUST_INDIRECT_P(RTX) \
1005   ((SYMBOL_REF_FLAGS (RTX) & MACHO_SYMBOL_FLAG_MUST_INDIRECT) != 0)
1006
1007 /* Set on a symbol with SYMBOL_FLAG_FUNCTION or MACHO_SYMBOL_FLAG_VARIABLE
1008    to indicate that the function or variable is considered defined in this
1009    translation unit.  */
1010
1011 #define MACHO_SYMBOL_FLAG_DEFINED ((SYMBOL_FLAG_SUBT_DEP) << 2)
1012 #define MACHO_SYMBOL_DEFINED_P(RTX) \
1013   ((SYMBOL_REF_FLAGS (RTX) & MACHO_SYMBOL_FLAG_DEFINED) != 0)
1014
1015 /* Set on a symbol that has specified non-default visibility.  */
1016
1017 #define MACHO_SYMBOL_FLAG_HIDDEN_VIS ((SYMBOL_FLAG_SUBT_DEP) << 3)
1018 #define MACHO_SYMBOL_HIDDEN_VIS_P(RTX) \
1019   ((SYMBOL_REF_FLAGS (RTX) & MACHO_SYMBOL_FLAG_HIDDEN_VIS) != 0)
1020
1021 /* Set on a symbol that should be made visible to the linker (overriding
1022    'L' symbol prefixes).  */
1023
1024 #define MACHO_SYMBOL_FLAG_LINKER_VIS ((SYMBOL_FLAG_SUBT_DEP) << 4)
1025 #define MACHO_SYMBOL_LINKER_VIS_P(RTX) \
1026   ((SYMBOL_REF_FLAGS (RTX) & MACHO_SYMBOL_FLAG_LINKER_VIS) != 0)
1027
1028 /* Set on a symbol that is a pic stub or symbol indirection (i.e. the
1029    L_xxxxx${stub,non_lazy_ptr,lazy_ptr}.  */
1030
1031 #define MACHO_SYMBOL_FLAG_INDIRECTION ((SYMBOL_FLAG_SUBT_DEP) << 5)
1032 #define MACHO_SYMBOL_INDIRECTION_P(RTX) \
1033   ((SYMBOL_REF_FLAGS (RTX) & MACHO_SYMBOL_FLAG_INDIRECTION) != 0)
1034
1035 /* Set on a symbol to indicate when fix-and-continue style code
1036    generation is being used and the symbol refers to a static symbol
1037    that should be rebound from new instances of a translation unit to
1038    the original instance of the data.  */
1039
1040 #define MACHO_SYMBOL_FLAG_STATIC ((SYMBOL_FLAG_SUBT_DEP) << 6)
1041 #define MACHO_SYMBOL_STATIC_P(RTX) \
1042   ((SYMBOL_REF_FLAGS (RTX) & MACHO_SYMBOL_FLAG_STATIC) != 0)
1043
1044 /* Symbolic names for various things we might know about a symbol.  */
1045
1046 enum machopic_addr_class {
1047   MACHOPIC_UNDEFINED,
1048   MACHOPIC_DEFINED_DATA,
1049   MACHOPIC_UNDEFINED_DATA,
1050   MACHOPIC_DEFINED_FUNCTION,
1051   MACHOPIC_UNDEFINED_FUNCTION
1052 };
1053
1054 /* Macros defining the various PIC cases.  */
1055
1056 #undef  MACHO_DYNAMIC_NO_PIC_P
1057 #define MACHO_DYNAMIC_NO_PIC_P  (TARGET_MACHO_DYNAMIC_NO_PIC)
1058 #undef  MACHOPIC_INDIRECT
1059 #define MACHOPIC_INDIRECT       (flag_pic || MACHO_DYNAMIC_NO_PIC_P)
1060 #define MACHOPIC_JUST_INDIRECT  (MACHO_DYNAMIC_NO_PIC_P)
1061 #undef  MACHOPIC_PURE
1062 #define MACHOPIC_PURE           (flag_pic && ! MACHO_DYNAMIC_NO_PIC_P)
1063
1064 #undef TARGET_ENCODE_SECTION_INFO
1065 #define TARGET_ENCODE_SECTION_INFO  darwin_encode_section_info
1066 #undef TARGET_STRIP_NAME_ENCODING
1067 #define TARGET_STRIP_NAME_ENCODING  default_strip_name_encoding
1068
1069 #define GEN_BINDER_NAME_FOR_STUB(BUF,STUB,STUB_LENGTH)          \
1070   do {                                                          \
1071     const char *const stub_ = (STUB);                           \
1072     char *buffer_ = (BUF);                                      \
1073     strcpy (buffer_, stub_);                                    \
1074     if (stub_[0] == '"')                                        \
1075       {                                                         \
1076         strcpy (buffer_ + (STUB_LENGTH) - 1, "_binder\"");      \
1077       }                                                         \
1078     else                                                        \
1079       {                                                         \
1080         strcpy (buffer_ + (STUB_LENGTH), "_binder");            \
1081       }                                                         \
1082   } while (0)
1083
1084 #define GEN_SYMBOL_NAME_FOR_SYMBOL(BUF,SYMBOL,SYMBOL_LENGTH)    \
1085   do {                                                          \
1086     const char *const symbol_ = (SYMBOL);                       \
1087     char *buffer_ = (BUF);                                      \
1088     if (name_needs_quotes (symbol_) && symbol_[0] != '"')       \
1089       {                                                         \
1090           sprintf (buffer_, "\"%s\"", symbol_);                 \
1091       }                                                         \
1092     else                                                        \
1093       {                                                         \
1094         strcpy (buffer_, symbol_);                              \
1095       }                                                         \
1096   } while (0)
1097
1098 /* Given a symbol name string, create the lazy pointer version
1099    of the symbol name.  */
1100
1101 #define GEN_LAZY_PTR_NAME_FOR_SYMBOL(BUF,SYMBOL,SYMBOL_LENGTH)  \
1102   do {                                                          \
1103     const char *symbol_ = (SYMBOL);                             \
1104     char *buffer_ = (BUF);                                      \
1105     if (symbol_[0] == '"')                                      \
1106       {                                                         \
1107         strcpy (buffer_, "\"L");                                \
1108         strcpy (buffer_ + 2, symbol_ + 1);                      \
1109         strcpy (buffer_ + (SYMBOL_LENGTH), "$lazy_ptr\"");      \
1110       }                                                         \
1111     else if (name_needs_quotes (symbol_))                       \
1112       {                                                         \
1113         strcpy (buffer_, "\"L");                                \
1114         strcpy (buffer_ + 2, symbol_);                          \
1115         strcpy (buffer_ + (SYMBOL_LENGTH) + 2, "$lazy_ptr\"");  \
1116       }                                                         \
1117     else                                                        \
1118       {                                                         \
1119         strcpy (buffer_, "L");                                  \
1120         strcpy (buffer_ + 1, symbol_);                          \
1121         strcpy (buffer_ + (SYMBOL_LENGTH) + 1, "$lazy_ptr");    \
1122       }                                                         \
1123   } while (0)
1124
1125 #define EH_FRAME_SECTION_NAME   "__TEXT"
1126 #define EH_FRAME_SECTION_ATTR ",coalesced,no_toc+strip_static_syms+live_support"
1127
1128 #undef ASM_PREFERRED_EH_DATA_FORMAT
1129 #define ASM_PREFERRED_EH_DATA_FORMAT(CODE,GLOBAL)  \
1130   (((CODE) == 2 && (GLOBAL) == 1) || ((CODE) == 0 && (GLOBAL) == 1) \
1131    ? (DW_EH_PE_pcrel | DW_EH_PE_indirect | DW_EH_PE_sdata4) : \
1132      ((CODE) == 1 || (GLOBAL) == 0) ? DW_EH_PE_pcrel : DW_EH_PE_absptr)
1133
1134 #define ASM_OUTPUT_DWARF_DELTA(FILE,SIZE,LABEL1,LABEL2)  \
1135   darwin_asm_output_dwarf_delta (FILE, SIZE, LABEL1, LABEL2, 0)
1136
1137 #define ASM_OUTPUT_DWARF_OFFSET(FILE,SIZE,LABEL,OFFSET,BASE)  \
1138   darwin_asm_output_dwarf_offset (FILE, SIZE, LABEL, OFFSET, BASE)
1139
1140 #define ASM_MAYBE_OUTPUT_ENCODED_ADDR_RTX(ASM_OUT_FILE, ENCODING, SIZE, ADDR, DONE)     \
1141       if (ENCODING == ASM_PREFERRED_EH_DATA_FORMAT (2, 1)) {                            \
1142         darwin_non_lazy_pcrel (ASM_OUT_FILE, ADDR);                                     \
1143         goto DONE;                                                                      \
1144       }
1145
1146 /* Experimentally, putting jump tables in text is faster on SPEC.
1147    Also this is needed for correctness for coalesced functions.  */
1148
1149 #ifndef JUMP_TABLES_IN_TEXT_SECTION
1150 #define JUMP_TABLES_IN_TEXT_SECTION 1
1151 #endif
1152
1153 #define TARGET_TERMINATE_DW2_EH_FRAME_INFO false
1154
1155 #define TARGET_ASM_INIT_SECTIONS darwin_init_sections
1156 #undef TARGET_ASM_NAMED_SECTION
1157 #define TARGET_ASM_NAMED_SECTION darwin_asm_named_section
1158
1159 #define DARWIN_REGISTER_TARGET_PRAGMAS()                        \
1160   do {                                                          \
1161     if (!flag_preprocess_only)                                  \
1162       cpp_register_pragma (parse_in, NULL, "mark",              \
1163                            darwin_pragma_ignore, false);        \
1164     c_register_pragma (0, "options", darwin_pragma_options);    \
1165     c_register_pragma (0, "segment", darwin_pragma_ignore);     \
1166     c_register_pragma (0, "unused", darwin_pragma_unused);      \
1167     c_register_pragma (0, "ms_struct", darwin_pragma_ms_struct); \
1168   } while (0)
1169
1170 #undef ASM_APP_ON
1171 #define ASM_APP_ON ""
1172 #undef ASM_APP_OFF
1173 #define ASM_APP_OFF ""
1174
1175 void darwin_register_frameworks (const char *, const char *, int);
1176 void darwin_register_objc_includes (const char *, const char *, int);
1177 #define TARGET_EXTRA_PRE_INCLUDES darwin_register_objc_includes
1178 #define TARGET_EXTRA_INCLUDES darwin_register_frameworks
1179
1180 void add_framework_path (char *);
1181 #define TARGET_OPTF add_framework_path
1182
1183 #define TARGET_POSIX_IO
1184
1185 #define WINT_TYPE "int"
1186
1187 /* Every program on darwin links against libSystem which contains the pthread
1188    routines, so there's no need to explicitly call out when doing threaded
1189    work.  */
1190
1191 #undef GOMP_SELF_SPECS
1192 #define GOMP_SELF_SPECS ""
1193 #undef GTM_SELF_SPECS
1194 #define GTM_SELF_SPECS ""
1195
1196 /* Darwin disables section anchors by default.
1197    They should be enabled per arch where support exists in that arch.  */
1198 #define TARGET_ASM_OUTPUT_ANCHOR NULL
1199 #define DARWIN_SECTION_ANCHORS 0
1200
1201 #define HAVE_ENABLE_EXECUTE_STACK
1202
1203 /* For Apple KEXTs, we make the constructors return this to match gcc
1204    2.95.  */
1205 #define TARGET_CXX_CDTOR_RETURNS_THIS (darwin_kextabi_p)
1206 #define TARGET_KEXTABI flag_apple_kext
1207
1208 /* We have target-specific builtins.  */
1209 #define SUBTARGET_FOLD_BUILTIN darwin_fold_builtin
1210
1211 #define TARGET_N_FORMAT_TYPES 1
1212 #define TARGET_FORMAT_TYPES darwin_additional_format_types
1213
1214 #ifndef USED_FOR_TARGET
1215 extern void darwin_driver_init (unsigned int *,struct cl_decoded_option **);
1216 #define GCC_DRIVER_HOST_INITIALIZATION \
1217   darwin_driver_init (&decoded_options_count, &decoded_options)
1218 #endif
1219
1220 /* The Apple assembler and linker do not support constructor priorities.  */
1221 #undef SUPPORTS_INIT_PRIORITY
1222 #define SUPPORTS_INIT_PRIORITY 0
1223
1224 #undef STACK_CHECK_STATIC_BUILTIN
1225 #define STACK_CHECK_STATIC_BUILTIN 1
1226
1227 /* When building cross-compilers (and native crosses) we shall default to
1228    providing an osx-version-min of this unless overridden by the User.
1229    10.5 is the only version that fully supports all our archs so that's the
1230    fall-back default.  */
1231 #ifndef DEF_MIN_OSX_VERSION
1232 #define DEF_MIN_OSX_VERSION "10.5"
1233 #endif
1234
1235 /* Later versions of ld64 support coalescing weak code/data without requiring
1236    that they be placed in specially identified sections.  This is the earliest
1237    _tested_ version known to support this so far.  */
1238 #define MIN_LD64_NO_COAL_SECTS "236.3"
1239
1240 /* From at least version 62.1, ld64 can build symbol indirection stubs as
1241    needed, and there is no need for the compiler to emit them.  */
1242 #define MIN_LD64_OMIT_STUBS "62.1"
1243
1244 /* Emit start labels for init and term sections from this version.  */
1245 #define MIN_LD64_INIT_TERM_START_LABELS "136.0"
1246
1247 /* If we have no definition for the linker version, pick the minimum version
1248    that will bootstrap the compiler.  */
1249 #ifndef LD64_VERSION
1250 # ifndef  DEF_LD64
1251 #  define LD64_VERSION "85.2.1"
1252 # else
1253 #  define LD64_VERSION DEF_LD64
1254 # endif
1255 #endif
1256
1257 /* CTF and BTF support.  */
1258 #undef CTF_INFO_SECTION_NAME
1259 #define CTF_INFO_SECTION_NAME "__CTF_BTF,__ctf,regular,debug"
1260 #undef BTF_INFO_SECTION_NAME
1261 #define BTF_INFO_SECTION_NAME "__CTF_BTF,__btf,regular,debug"
1262
1263 #endif /* CONFIG_DARWIN_H */