gcc/config/darwin.h

   1 /* Target definitions for Darwin (Mac OS X) systems.
   2    Copyright (C) 1989-2013 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 Mac OS X.  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 /* Don't assume anything about the header files.  */
  47 #define NO_IMPLICIT_EXTERN_C
  48
  49 /* Suppress g++ attempt to link in the math library automatically. */
  50 #define MATH_LIBRARY ""
  51
  52 /* We have atexit.  */
  53
  54 #define HAVE_ATEXIT
  55
  56 /* Define an empty body for the function do_global_dtors() in libgcc2.c.  */
  57
  58 #define DO_GLOBAL_DTORS_BODY
  59
  60 /* The string value for __SIZE_TYPE__.  */
  61
  62 #ifndef SIZE_TYPE
  63 #define SIZE_TYPE "long unsigned int"
  64 #endif
  65
  66 /* Type used for ptrdiff_t, as a string used in a declaration.  */
  67
  68 #undef  PTRDIFF_TYPE
  69 #define PTRDIFF_TYPE "int"
  70
  71 /* wchar_t is int.  */
  72
  73 #undef  WCHAR_TYPE
  74 #define WCHAR_TYPE "int"
  75 #undef  WCHAR_TYPE_SIZE
  76 #define WCHAR_TYPE_SIZE 32
  77
  78 #define INT8_TYPE "signed char"
  79 #define INT16_TYPE "short int"
  80 #define INT32_TYPE "int"
  81 #define INT64_TYPE "long long int"
  82 #define UINT8_TYPE "unsigned char"
  83 #define UINT16_TYPE "short unsigned int"
  84 #define UINT32_TYPE "unsigned int"
  85 #define UINT64_TYPE "long long unsigned int"
  86
  87 #define INT_LEAST8_TYPE "signed char"
  88 #define INT_LEAST16_TYPE "short int"
  89 #define INT_LEAST32_TYPE "int"
  90 #define INT_LEAST64_TYPE "long long int"
  91 #define UINT_LEAST8_TYPE "unsigned char"
  92 #define UINT_LEAST16_TYPE "short unsigned int"
  93 #define UINT_LEAST32_TYPE "unsigned int"
  94 #define UINT_LEAST64_TYPE "long long unsigned int"
  95
  96 #define INT_FAST8_TYPE "signed char"
  97 #define INT_FAST16_TYPE "short int"
  98 #define INT_FAST32_TYPE "int"
  99 #define INT_FAST64_TYPE "long long int"
 100 #define UINT_FAST8_TYPE "unsigned char"
 101 #define UINT_FAST16_TYPE "short unsigned int"
 102 #define UINT_FAST32_TYPE "unsigned int"
 103 #define UINT_FAST64_TYPE "long long unsigned int"
 104
 105 #define INTPTR_TYPE "long int"
 106 #define UINTPTR_TYPE "long unsigned int"
 107
 108 #define SIG_ATOMIC_TYPE "int"
 109
 110 /* Default to using the NeXT-style runtime, since that's what is
 111    pre-installed on Darwin systems.  */
 112
 113 #define NEXT_OBJC_RUNTIME 1
 114
 115 /* Don't default to pcc-struct-return, because gcc is the only compiler, and
 116    we want to retain compatibility with older gcc versions.  */
 117
 118 #undef  DEFAULT_PCC_STRUCT_RETURN
 119 #define DEFAULT_PCC_STRUCT_RETURN 0
 120
 121 /* True if pragma ms_struct is in effect.  */
 122 extern GTY(()) int darwin_ms_struct;
 123
 124 #define DRIVER_SELF_SPECS                                       \
 125   "%{gfull:-g -fno-eliminate-unused-debug-symbols} %<gfull",    \
 126   "%{gused:-g -feliminate-unused-debug-symbols} %<gused",       \
 127   "%{fapple-kext|mkernel:-static}",                             \
 128   "%{shared:-Zdynamiclib} %<shared"
 129
 130 #define DARWIN_CC1_SPEC                                                 \
 131   "%{findirect-virtual-calls: -fapple-kext} %<findirect-virtual-calls " \
 132   "%{fterminated-vtables: -fapple-kext} %<fterminated-vtables "         \
 133   "%<filelist* %<framework*"
 134
 135 #define SUBSUBTARGET_OVERRIDE_OPTIONS                                   \
 136   do {                                                                  \
 137     darwin_override_options ();                                         \
 138   } while (0)
 139
 140 #define SUBTARGET_C_COMMON_OVERRIDE_OPTIONS do {                        \
 141     if (flag_mkernel || flag_apple_kext)                                \
 142       {                                                                 \
 143         if (flag_use_cxa_atexit == 2)                                   \
 144           flag_use_cxa_atexit = 0;                                      \
 145         /* kexts should always be built without the coalesced sections  \
 146            because the kernel loader doesn't grok such sections.  */    \
 147         flag_weak = 0;                                                  \
 148         /* No RTTI in kexts.  */                                        \
 149         flag_rtti = 0;                                                  \
 150       }                                                                 \
 151   } while (0)
 152
 153 /* Machine dependent cpp options.  Don't add more options here, add
 154    them to darwin_cpp_builtins in darwin-c.c.  */
 155
 156 #undef  CPP_SPEC
 157 #define CPP_SPEC "%{static:%{!dynamic:-D__STATIC__}}%{!static:-D__DYNAMIC__}" \
 158         " %{pthread:-D_REENTRANT}"
 159
 160 /* This is mostly a clone of the standard LINK_COMMAND_SPEC, plus
 161    precomp, libtool, and fat build additions.
 162
 163    In general, random Darwin linker flags should go into LINK_SPEC
 164    instead of LINK_COMMAND_SPEC.  The command spec is better for
 165    specifying the handling of options understood by generic Unix
 166    linkers, and for positional arguments like libraries.  */
 167
 168 #define LINK_COMMAND_SPEC_A \
 169    "%{!fdump=*:%{!fsyntax-only:%{!c:%{!M:%{!MM:%{!E:%{!S:\
 170     %(linker)" \
 171     LINK_PLUGIN_SPEC \
 172     "%{flto*:%<fcompare-debug*} \
 173     %{flto*} \
 174     %l %X %{s} %{t} %{Z} %{u*} \
 175     %{e*} %{r} \
 176     %{o*}%{!o:-o a.out} \
 177     %{!nostdlib:%{!nostartfiles:%S}} \
 178     %{L*} %(link_libgcc) %o %{fprofile-arcs|fprofile-generate*|coverage:-lgcov} \
 179     %{fopenmp|ftree-parallelize-loops=*: \
 180       %{static|static-libgcc|static-libstdc++|static-libgfortran: libgomp.a%s; : -lgomp } } \
 181     %{fsanitize=address: -lasan } \
 182     %{fgnu-tm: \
 183       %{static|static-libgcc|static-libstdc++|static-libgfortran: libitm.a%s; : -litm } } \
 184     %{!nostdlib:%{!nodefaultlibs:\
 185       %(link_ssp) %(link_gcc_c_sequence)\
 186     }}\
 187     %{!nostdlib:%{!nostartfiles:%E}} %{T*} %{F*} }}}}}}}"
 188
 189 #define DSYMUTIL "\ndsymutil"
 190
 191 #define DSYMUTIL_SPEC \
 192    "%{!fdump=*:%{!fsyntax-only:%{!c:%{!M:%{!MM:%{!E:%{!S:\
 193     %{v} \
 194     %{gdwarf-2:%{!gstabs*:%{!g0: -idsym}}}\
 195     %{.c|.cc|.C|.cpp|.cp|.c++|.cxx|.CPP|.m|.mm: \
 196     %{gdwarf-2:%{!gstabs*:%{!g0: -dsym}}}}}}}}}}}"
 197
 198 #define LINK_COMMAND_SPEC LINK_COMMAND_SPEC_A DSYMUTIL_SPEC
 199
 200 /* Tell collect2 to run dsymutil for us as necessary.  */
 201 #define COLLECT_RUN_DSYMUTIL 1
 202
 203 /* We only want one instance of %G, since libSystem (Darwin's -lc) does not depend
 204    on libgcc.  */
 205 #undef  LINK_GCC_C_SEQUENCE_SPEC
 206 #define LINK_GCC_C_SEQUENCE_SPEC "%G %L"
 207
 208 #ifdef TARGET_SYSTEM_ROOT
 209 #define LINK_SYSROOT_SPEC \
 210   "%{isysroot*:-syslibroot %*;:-syslibroot " TARGET_SYSTEM_ROOT "}"
 211 #else
 212 #define LINK_SYSROOT_SPEC "%{isysroot*:-syslibroot %*}"
 213 #endif
 214
 215 #define PIE_SPEC "%{fpie|pie|fPIE:}"
 216
 217 /* Please keep the random linker options in alphabetical order (modulo
 218    'Z' and 'no' prefixes). Note that options taking arguments may appear
 219    multiple times on a command line with different arguments each time,
 220    so put a * after their names so all of them get passed.  */
 221 #define LINK_SPEC  \
 222   "%{static}%{!static:-dynamic} \
 223    %:remove-outfile(-ldl) \
 224    %:remove-outfile(-lm) \
 225    %:remove-outfile(-lpthread) \
 226    %{fgnu-runtime: %{static|static-libgcc: \
 227                      %:replace-outfile(-lobjc libobjc-gnu.a%s); \
 228                     :%:replace-outfile(-lobjc -lobjc-gnu ) } }\
 229    %{static|static-libgcc|static-libgfortran:%:replace-outfile(-lgfortran libgfortran.a%s)}\
 230    %{static|static-libgcc|static-libstdc++|static-libgfortran:%:replace-outfile(-lgomp libgomp.a%s)}\
 231    %{static|static-libgcc|static-libstdc++:%:replace-outfile(-lstdc++ libstdc++.a%s)}\
 232    %{!Zdynamiclib: \
 233      %{Zforce_cpusubtype_ALL:-arch %(darwin_arch) -force_cpusubtype_ALL} \
 234      %{!Zforce_cpusubtype_ALL:-arch %(darwin_subarch)} \
 235      %{Zbundle:-bundle} \
 236      %{Zbundle_loader*:-bundle_loader %*} \
 237      %{client_name*} \
 238      %{compatibility_version*:%e-compatibility_version only allowed with -dynamiclib\
 239 } \
 240      %{current_version*:%e-current_version only allowed with -dynamiclib} \
 241      %{Zforce_flat_namespace:-force_flat_namespace} \
 242      %{Zinstall_name*:%e-install_name only allowed with -dynamiclib} \
 243      %{keep_private_externs} \
 244      %{private_bundle} \
 245     } \
 246    %{Zdynamiclib: -dylib \
 247      %{Zbundle:%e-bundle not allowed with -dynamiclib} \
 248      %{Zbundle_loader*:%e-bundle_loader not allowed with -dynamiclib} \
 249      %{client_name*:%e-client_name not allowed with -dynamiclib} \
 250      %{compatibility_version*:-dylib_compatibility_version %*} \
 251      %{current_version*:-dylib_current_version %*} \
 252      %{Zforce_cpusubtype_ALL:-arch %(darwin_arch)} \
 253      %{!Zforce_cpusubtype_ALL: -arch %(darwin_subarch)} \
 254      %{Zforce_flat_namespace:%e-force_flat_namespace not allowed with -dynamiclib} \
 255      %{Zinstall_name*:-dylib_install_name %*} \
 256      %{keep_private_externs:%e-keep_private_externs not allowed with -dynamiclib} \
 257      %{private_bundle:%e-private_bundle not allowed with -dynamiclib} \
 258     } \
 259    %{Zall_load:-all_load} \
 260    %{Zallowable_client*:-allowable_client %*} \
 261    %{Zbind_at_load:-bind_at_load} \
 262    %{Zarch_errors_fatal:-arch_errors_fatal} \
 263    %{Zdead_strip:-dead_strip} \
 264    %{Zno_dead_strip_inits_and_terms:-no_dead_strip_inits_and_terms} \
 265    %{Zdylib_file*:-dylib_file %*} \
 266    %{Zdynamic:-dynamic}\
 267    %{Zexported_symbols_list*:-exported_symbols_list %*} \
 268    %{Zflat_namespace:-flat_namespace} \
 269    %{headerpad_max_install_names} \
 270    %{Zimage_base*:-image_base %*} \
 271    %{Zinit*:-init %*} \
 272    %{!mmacosx-version-min=*:-macosx_version_min %(darwin_minversion)} \
 273    %{mmacosx-version-min=*:-macosx_version_min %*} \
 274    %{nomultidefs} \
 275    %{Zmulti_module:-multi_module} %{Zsingle_module:-single_module} \
 276    %{Zmultiply_defined*:-multiply_defined %*} \
 277    %{!Zmultiply_defined*:%{shared-libgcc: \
 278      %:version-compare(< 10.5 mmacosx-version-min= -multiply_defined) \
 279      %:version-compare(< 10.5 mmacosx-version-min= suppress)}} \
 280    %{Zmultiplydefinedunused*:-multiply_defined_unused %*} \
 281    " PIE_SPEC " \
 282    %{prebind} %{noprebind} %{nofixprebinding} %{prebind_all_twolevel_modules} \
 283    %{read_only_relocs} \
 284    %{sectcreate*} %{sectorder*} %{seg1addr*} %{segprot*} \
 285    %{Zsegaddr*:-segaddr %*} \
 286    %{Zsegs_read_only_addr*:-segs_read_only_addr %*} \
 287    %{Zsegs_read_write_addr*:-segs_read_write_addr %*} \
 288    %{Zseg_addr_table*: -seg_addr_table %*} \
 289    %{Zfn_seg_addr_table_filename*:-seg_addr_table_filename %*} \
 290    %{sub_library*} %{sub_umbrella*} \
 291    " LINK_SYSROOT_SPEC " \
 292    %{twolevel_namespace} %{twolevel_namespace_hints} \
 293    %{Zumbrella*: -umbrella %*} \
 294    %{undefined*} \
 295    %{Zunexported_symbols_list*:-unexported_symbols_list %*} \
 296    %{Zweak_reference_mismatches*:-weak_reference_mismatches %*} \
 297    %{!Zweak_reference_mismatches*:-weak_reference_mismatches non-weak} \
 298    %{X} \
 299    %{y*} \
 300    %{w} \
 301    %{pagezero_size*} %{segs_read_*} %{seglinkedit} %{noseglinkedit}  \
 302    %{sectalign*} %{sectobjectsymbols*} %{segcreate*} %{whyload} \
 303    %{whatsloaded} %{dylinker_install_name*} \
 304    %{dylinker} %{Mach} "
 305
 306
 307 /* Machine dependent libraries.  */
 308
 309 #define LIB_SPEC "%{!static:-lSystem}"
 310
 311 /* Support -mmacosx-version-min by supplying different (stub) libgcc_s.dylib
 312    libraries to link against, and by not linking against libgcc_s on
 313    earlier-than-10.3.9.
 314
 315    Note that by default, -lgcc_eh is not linked against!  This is
 316    because in a future version of Darwin the EH frame information may
 317    be in a new format, or the fallback routine might be changed; if
 318    you want to explicitly link against the static version of those
 319    routines, because you know you don't need to unwind through system
 320    libraries, you need to explicitly say -static-libgcc.
 321
 322    If it is linked against, it has to be before -lgcc, because it may
 323    need symbols from -lgcc.  */
 324 #undef REAL_LIBGCC_SPEC
 325 #define REAL_LIBGCC_SPEC                                                   \
 326    "%{static-libgcc|static: -lgcc_eh -lgcc;                                \
 327       shared-libgcc|fexceptions|fgnu-runtime:                              \
 328        %:version-compare(!> 10.5 mmacosx-version-min= -lgcc_s.10.4)        \
 329        %:version-compare(>< 10.5 10.6 mmacosx-version-min= -lgcc_s.10.5)   \
 330        %:version-compare(!> 10.5 mmacosx-version-min= -lgcc_ext.10.4)      \
 331        %:version-compare(>= 10.5 mmacosx-version-min= -lgcc_ext.10.5)      \
 332        -lgcc ;                                                             \
 333       :%:version-compare(>< 10.3.9 10.5 mmacosx-version-min= -lgcc_s.10.4) \
 334        %:version-compare(>< 10.5 10.6 mmacosx-version-min= -lgcc_s.10.5)   \
 335        %:version-compare(!> 10.5 mmacosx-version-min= -lgcc_ext.10.4)      \
 336        %:version-compare(>= 10.5 mmacosx-version-min= -lgcc_ext.10.5)      \
 337        -lgcc }"
 338
 339 /* We specify crt0.o as -lcrt0.o so that ld will search the library path.
 340
 341    crt3.o provides __cxa_atexit on systems that don't have it.  Since
 342    it's only used with C++, which requires passing -shared-libgcc, key
 343    off that to avoid unnecessarily adding a destructor to every
 344    powerpc program built.  */
 345
 346 #undef  STARTFILE_SPEC
 347 #define STARTFILE_SPEC                                                      \
 348   "%{Zdynamiclib: %(darwin_dylib1) %{fgnu-tm: -lcrttms.o}}                  \
 349    %{!Zdynamiclib:%{Zbundle:%{!static:                                      \
 350         %:version-compare(< 10.6 mmacosx-version-min= -lbundle1.o)          \
 351         %{fgnu-tm: -lcrttms.o}}}                                            \
 352      %{!Zbundle:%{pg:%{static:-lgcrt0.o}                                    \
 353                      %{!static:%{object:-lgcrt0.o}                          \
 354                                %{!object:%{preload:-lgcrt0.o}               \
 355                                  %{!preload:-lgcrt1.o                       \
 356                                  %:version-compare(>= 10.8 mmacosx-version-min= -no_new_main) \
 357                                  %(darwin_crt2)}}}}    \
 358                 %{!pg:%{static:-lcrt0.o}                                    \
 359                       %{!static:%{object:-lcrt0.o}                          \
 360                                 %{!object:%{preload:-lcrt0.o}               \
 361                                   %{!preload: %(darwin_crt1)                \
 362                                               %(darwin_crt2)}}}}}}          \
 363   %{shared-libgcc:%:version-compare(< 10.5 mmacosx-version-min= crt3.o%s)}"
 364
 365 /* We want a destructor last in the list.  */
 366 #define TM_DESTRUCTOR "%{fgnu-tm: -lcrttme.o}"
 367 #define ENDFILE_SPEC TM_DESTRUCTOR
 368
 369 #define DARWIN_EXTRA_SPECS                                              \
 370   { "darwin_crt1", DARWIN_CRT1_SPEC },                                  \
 371   { "darwin_dylib1", DARWIN_DYLIB1_SPEC },                              \
 372   { "darwin_minversion", DARWIN_MINVERSION_SPEC },
 373
 374 #define DARWIN_DYLIB1_SPEC                                              \
 375   "%:version-compare(!> 10.5 mmacosx-version-min= -ldylib1.o)           \
 376    %:version-compare(>< 10.5 10.6 mmacosx-version-min= -ldylib1.10.5.o)"
 377
 378 #define DARWIN_CRT1_SPEC                                                \
 379   "%:version-compare(!> 10.5 mmacosx-version-min= -lcrt1.o)             \
 380    %:version-compare(>< 10.5 10.6 mmacosx-version-min= -lcrt1.10.5.o)   \
 381    %:version-compare(>< 10.6 10.8 mmacosx-version-min= -lcrt1.10.6.o)   \
 382    %{fgnu-tm: -lcrttms.o}"
 383
 384 /* Default Darwin ASM_SPEC, very simple.  */
 385 #define ASM_SPEC "-arch %(darwin_arch) \
 386   %{Zforce_cpusubtype_ALL:-force_cpusubtype_ALL} \
 387   %{static}"
 388
 389 /* Default ASM_DEBUG_SPEC.  Darwin's as cannot currently produce dwarf
 390    debugging data.  */
 391
 392 #define ASM_DEBUG_SPEC  "%{g*:%{!g0:%{!gdwarf*:--gstabs}}}"
 393
 394 /* We still allow output of STABS.  */
 395
 396 #define DBX_DEBUGGING_INFO 1
 397
 398 #define DWARF2_DEBUGGING_INFO 1
 399 #define PREFERRED_DEBUGGING_TYPE DBX_DEBUG
 400
 401 #define DEBUG_FRAME_SECTION     "__DWARF,__debug_frame,regular,debug"
 402 #define DEBUG_INFO_SECTION      "__DWARF,__debug_info,regular,debug"
 403 #define DEBUG_ABBREV_SECTION    "__DWARF,__debug_abbrev,regular,debug"
 404 #define DEBUG_ARANGES_SECTION   "__DWARF,__debug_aranges,regular,debug"
 405 #define DEBUG_MACINFO_SECTION   "__DWARF,__debug_macinfo,regular,debug"
 406 #define DEBUG_LINE_SECTION      "__DWARF,__debug_line,regular,debug"
 407 #define DEBUG_LOC_SECTION       "__DWARF,__debug_loc,regular,debug"
 408 #define DEBUG_PUBNAMES_SECTION  "__DWARF,__debug_pubnames,regular,debug"
 409 #define DEBUG_PUBTYPES_SECTION  "__DWARF,__debug_pubtypes,regular,debug"
 410 #define DEBUG_STR_SECTION       "__DWARF,__debug_str,regular,debug"
 411 #define DEBUG_RANGES_SECTION    "__DWARF,__debug_ranges,regular,debug"
 412 #define DEBUG_MACRO_SECTION    "__DWARF,__debug_macro,regular,debug"
 413
 414 #define TARGET_WANT_DEBUG_PUB_SECTIONS true
 415
 416 #define TARGET_FORCE_AT_COMP_DIR true
 417
 418 /* When generating stabs debugging, use N_BINCL entries.  */
 419
 420 #define DBX_USE_BINCL
 421
 422 /* There is no limit to the length of stabs strings.  */
 423
 424 #define DBX_CONTIN_LENGTH 0
 425
 426 /* gdb needs a null N_SO at the end of each file for scattered loading.  */
 427
 428 #define DBX_OUTPUT_NULL_N_SO_AT_MAIN_SOURCE_FILE_END
 429
 430 /* GCC's definition of 'one_only' is the same as its definition of 'weak'.  */
 431 #define MAKE_DECL_ONE_ONLY(DECL) (DECL_WEAK (DECL) = 1)
 432
 433 /* Mach-O supports 'weak imports', and 'weak definitions' in coalesced
 434    sections.  machopic_select_section ensures that weak variables go in
 435    coalesced sections.  Weak aliases (or any other kind of aliases) are
 436    not supported.  Weak symbols that aren't visible outside the .s file
 437    are not supported.  */
 438 #define ASM_WEAKEN_DECL(FILE, DECL, NAME, ALIAS)                        \
 439   do {                                                                  \
 440     if (ALIAS)                                                          \
 441       {                                                                 \
 442         warning (0, "alias definitions not supported in Mach-O; ignored");      \
 443         break;                                                          \
 444       }                                                                 \
 445                                                                         \
 446     if (! DECL_EXTERNAL (DECL) && TREE_PUBLIC (DECL))                   \
 447       targetm.asm_out.globalize_label (FILE, NAME);                     \
 448     if (DECL_EXTERNAL (DECL))                                           \
 449       fputs ("\t.weak_reference ", FILE);                               \
 450     else if (lookup_attribute ("weak_import", DECL_ATTRIBUTES (DECL)))  \
 451       break;                                                            \
 452     else if (TREE_PUBLIC (DECL))                                        \
 453       fputs ("\t.weak_definition ", FILE);                              \
 454     else                                                                \
 455       break;                                                            \
 456     assemble_name (FILE, NAME);                                         \
 457     fputc ('\n', FILE);                                                 \
 458   } while (0)
 459
 460 /* Darwin has the pthread routines in libSystem, which every program
 461    links to, so there's no need for weak-ness for that.  */
 462 #define GTHREAD_USE_WEAK 0
 463
 464 /* The Darwin linker doesn't want coalesced symbols to appear in
 465    a static archive's table of contents. */
 466 #undef TARGET_WEAK_NOT_IN_ARCHIVE_TOC
 467 #define TARGET_WEAK_NOT_IN_ARCHIVE_TOC 1
 468
 469 /* On Darwin, we don't (at the time of writing) have linkonce sections
 470    with names, so it's safe to make the class data not comdat.  */
 471 #define TARGET_CXX_CLASS_DATA_ALWAYS_COMDAT hook_bool_void_false
 472
 473 /* For efficiency, on Darwin the RTTI information that is always
 474    emitted in the standard C++ library should not be COMDAT.  */
 475 #define TARGET_CXX_LIBRARY_RTTI_COMDAT hook_bool_void_false
 476
 477 /* We make exception information linkonce. */
 478 #undef TARGET_USES_WEAK_UNWIND_INFO
 479 #define TARGET_USES_WEAK_UNWIND_INFO 1
 480
 481 /* We need to use a nonlocal label for the start of an EH frame: the
 482    Darwin linker requires that a coalesced section start with a label.
 483    Unfortunately, it also requires that 'debug' sections don't contain
 484    labels.  */
 485 #undef FRAME_BEGIN_LABEL
 486 #define FRAME_BEGIN_LABEL (for_eh ? "EH_frame" : "Lframe")
 487
 488 /* Emit a label for the FDE corresponding to DECL.  EMPTY means
 489    emit a label for an empty FDE. */
 490 #define TARGET_ASM_EMIT_UNWIND_LABEL darwin_emit_unwind_label
 491
 492 /* Emit a label to separate the exception table.  */
 493 #define TARGET_ASM_EMIT_EXCEPT_TABLE_LABEL darwin_emit_except_table_label
 494
 495 /* Our profiling scheme doesn't LP labels and counter words.  */
 496
 497 #define NO_PROFILE_COUNTERS     1
 498
 499 #undef  INIT_SECTION_ASM_OP
 500 #define INIT_SECTION_ASM_OP
 501
 502 #undef  INVOKE__main
 503
 504 #define TARGET_ASM_CONSTRUCTOR  machopic_asm_out_constructor
 505 #define TARGET_ASM_DESTRUCTOR   machopic_asm_out_destructor
 506
 507 /* Always prefix with an underscore.  */
 508
 509 #define USER_LABEL_PREFIX "_"
 510
 511 /* A dummy symbol that will be replaced with the function base name.  */
 512 #define MACHOPIC_FUNCTION_BASE_NAME "<pic base>"
 513
 514 /* Don't output a .file directive.  That is only used by the assembler for
 515    error reporting.  */
 516 #undef  TARGET_ASM_FILE_START_FILE_DIRECTIVE
 517 #define TARGET_ASM_FILE_START_FILE_DIRECTIVE false
 518
 519 #undef  TARGET_ASM_FILE_END
 520 #define TARGET_ASM_FILE_END darwin_file_end
 521
 522 /* Because Mach-O relocations have a counter from 1 to 255 for the
 523    section number they apply to, it is necessary to output all
 524    normal sections before the LTO sections, to make sure that the
 525    sections that may have relocations always have a section number
 526    smaller than 255.  */
 527 #undef  TARGET_ASM_LTO_START
 528 #define TARGET_ASM_LTO_START darwin_asm_lto_start
 529 #undef  TARGET_ASM_LTO_END
 530 #define TARGET_ASM_LTO_END darwin_asm_lto_end
 531
 532 #define ASM_OUTPUT_SKIP(FILE,SIZE)  \
 533   fprintf (FILE, "\t.space "HOST_WIDE_INT_PRINT_UNSIGNED"\n", SIZE)
 534
 535 /* Give ObjC methods pretty symbol names.  */
 536
 537 #undef  OBJC_GEN_METHOD_LABEL
 538 #define OBJC_GEN_METHOD_LABEL(BUF,IS_INST,CLASS_NAME,CAT_NAME,SEL_NAME,NUM) \
 539   do { if (CAT_NAME)                                                    \
 540          sprintf (BUF, "%c[%s(%s) %s]", (IS_INST) ? '-' : '+',          \
 541                   (CLASS_NAME), (CAT_NAME), (SEL_NAME));                \
 542        else                                                             \
 543          sprintf (BUF, "%c[%s %s]", (IS_INST) ? '-' : '+',              \
 544                   (CLASS_NAME), (SEL_NAME));                            \
 545      } while (0)
 546
 547 #undef ASM_DECLARE_OBJECT_NAME
 548 #define ASM_DECLARE_OBJECT_NAME(FILE, NAME, DECL) \
 549         darwin_asm_declare_object_name ((FILE), (NAME), (DECL))
 550
 551 /* The RTTI data (e.g., __ti4name) is common and public (and static),
 552    but it does need to be referenced via indirect PIC data pointers.
 553    The machopic_define_symbol calls are telling the machopic subsystem
 554    that the name *is* defined in this module, so it doesn't need to
 555    make them indirect.  */
 556
 557 #define ASM_DECLARE_FUNCTION_NAME(FILE, NAME, DECL)                     \
 558   do {                                                                  \
 559     const char *xname = NAME;                                           \
 560     if (GET_CODE (XEXP (DECL_RTL (DECL), 0)) != SYMBOL_REF)             \
 561       xname = IDENTIFIER_POINTER (DECL_NAME (DECL));                    \
 562     if (! DECL_WEAK (DECL)                                              \
 563         && ((TREE_STATIC (DECL)                                         \
 564              && (!DECL_COMMON (DECL) || !TREE_PUBLIC (DECL)))           \
 565             || DECL_INITIAL (DECL)))                                    \
 566         machopic_define_symbol (DECL_RTL (DECL));                       \
 567     if ((TREE_STATIC (DECL)                                             \
 568          && (!DECL_COMMON (DECL) || !TREE_PUBLIC (DECL)))               \
 569         || DECL_INITIAL (DECL))                                         \
 570       (* targetm.encode_section_info) (DECL, DECL_RTL (DECL), false);   \
 571     ASM_OUTPUT_FUNCTION_LABEL (FILE, xname, DECL);                      \
 572   } while (0)
 573
 574 #undef TARGET_ASM_DECLARE_CONSTANT_NAME
 575 #define TARGET_ASM_DECLARE_CONSTANT_NAME darwin_asm_declare_constant_name
 576
 577 /* Wrap new method names in quotes so the assembler doesn't gag.
 578    Make Objective-C internal symbols local and in doing this, we need
 579    to accommodate the name mangling done by c++ on file scope locals.  */
 580
 581 int darwin_label_is_anonymous_local_objc_name (const char *name);
 582
 583 #undef  ASM_OUTPUT_LABELREF
 584 #define ASM_OUTPUT_LABELREF(FILE,NAME)                                       \
 585   do {                                                                       \
 586        const char *xname = (NAME);                                           \
 587        if (! strcmp (xname, MACHOPIC_FUNCTION_BASE_NAME))                    \
 588          machopic_output_function_base_name(FILE);                           \
 589        else if (xname[0] == '&' || xname[0] == '*')                          \
 590          {                                                                   \
 591            int len = strlen (xname);                                         \
 592            if (len > 6 && !strcmp ("$stub", xname + len - 5))                \
 593              machopic_validate_stub_or_non_lazy_ptr (xname);                 \
 594            else if (len > 7 && !strcmp ("$stub\"", xname + len - 6))         \
 595              machopic_validate_stub_or_non_lazy_ptr (xname);                 \
 596            else if (len > 14 && !strcmp ("$non_lazy_ptr", xname + len - 13)) \
 597              machopic_validate_stub_or_non_lazy_ptr (xname);                 \
 598            else if (len > 15 && !strcmp ("$non_lazy_ptr\"", xname + len - 14)) \
 599              machopic_validate_stub_or_non_lazy_ptr (xname);                 \
 600            if (xname[1] != '"' && name_needs_quotes (&xname[1]))             \
 601              fprintf (FILE, "\"%s\"", &xname[1]);                            \
 602            else                                                              \
 603              fputs (&xname[1], FILE);                                        \
 604          }                                                                   \
 605        else if (xname[0] == '+' || xname[0] == '-')                          \
 606          fprintf (FILE, "\"%s\"", xname);                                    \
 607        else if (darwin_label_is_anonymous_local_objc_name (xname))           \
 608          fprintf (FILE, "L%s", xname);                                       \
 609        else if (xname[0] != '"' && name_needs_quotes (xname))                \
 610          asm_fprintf (FILE, "\"%U%s\"", xname);                              \
 611        else                                                                  \
 612          asm_fprintf (FILE, "%U%s", xname);                                  \
 613   } while (0)
 614
 615 /* Output before executable code.  */
 616 #undef TEXT_SECTION_ASM_OP
 617 #define TEXT_SECTION_ASM_OP "\t.text"
 618
 619 /* Output before writable data.  */
 620
 621 #undef DATA_SECTION_ASM_OP
 622 #define DATA_SECTION_ASM_OP "\t.data"
 623
 624 #undef  ALIGN_ASM_OP
 625 #define ALIGN_ASM_OP            ".align"
 626
 627 #undef  ASM_OUTPUT_ALIGN
 628 #define ASM_OUTPUT_ALIGN(FILE,LOG)      \
 629   if ((LOG) != 0)                       \
 630     fprintf (FILE, "\t%s\t%d\n", ALIGN_ASM_OP, (LOG))
 631
 632 /* The maximum alignment which the object file format can support in
 633    bits.  For Mach-O, this is 2^15 bytes.  */
 634
 635 #undef  MAX_OFILE_ALIGNMENT
 636 #define MAX_OFILE_ALIGNMENT (0x8000 * 8)
 637
 638 #define L2_MAX_OFILE_ALIGNMENT 15
 639
 640 /*  These are the three variants that emit referenced blank space.  */
 641 #define ASM_OUTPUT_ALIGNED_BSS(FILE, DECL, NAME, SIZE, ALIGN)           \
 642         darwin_output_aligned_bss ((FILE), (DECL), (NAME), (SIZE), (ALIGN))
 643
 644 #undef  ASM_OUTPUT_ALIGNED_DECL_LOCAL
 645 #define ASM_OUTPUT_ALIGNED_DECL_LOCAL(FILE, DECL, NAME, SIZE, ALIGN)    \
 646         darwin_asm_output_aligned_decl_local                            \
 647                                   ((FILE), (DECL), (NAME), (SIZE), (ALIGN))
 648
 649 #undef  ASM_OUTPUT_ALIGNED_DECL_COMMON
 650 #define ASM_OUTPUT_ALIGNED_DECL_COMMON(FILE, DECL, NAME, SIZE, ALIGN)   \
 651         darwin_asm_output_aligned_decl_common                           \
 652                                    ((FILE), (DECL), (NAME), (SIZE), (ALIGN))
 653
 654 /* The generic version, archs should over-ride where required.  */
 655 #define MACHOPIC_NL_SYMBOL_PTR_SECTION ".non_lazy_symbol_pointer"
 656
 657 /* Declare the section variables.  */
 658 #ifndef USED_FOR_TARGET
 659 enum darwin_section_enum {
 660 #define DEF_SECTION(NAME, FLAGS, DIRECTIVE, OBJC) NAME,
 661 #include "darwin-sections.def"
 662 #undef DEF_SECTION
 663   NUM_DARWIN_SECTIONS
 664 };
 665 extern GTY(()) section * darwin_sections[NUM_DARWIN_SECTIONS];
 666 #endif
 667
 668 #undef  TARGET_ASM_SELECT_SECTION
 669 #define TARGET_ASM_SELECT_SECTION machopic_select_section
 670
 671 #undef  TARGET_ASM_FUNCTION_SECTION
 672 #define TARGET_ASM_FUNCTION_SECTION darwin_function_section
 673
 674 #undef  TARGET_ASM_FUNCTION_SWITCHED_TEXT_SECTIONS
 675 #define TARGET_ASM_FUNCTION_SWITCHED_TEXT_SECTIONS \
 676         darwin_function_switched_text_sections
 677
 678 #undef  TARGET_ASM_SELECT_RTX_SECTION
 679 #define TARGET_ASM_SELECT_RTX_SECTION machopic_select_rtx_section
 680 #undef  TARGET_ASM_UNIQUE_SECTION
 681 #define TARGET_ASM_UNIQUE_SECTION darwin_unique_section
 682 #undef  TARGET_ASM_FUNCTION_RODATA_SECTION
 683 #define TARGET_ASM_FUNCTION_RODATA_SECTION default_no_function_rodata_section
 684
 685 #undef  TARGET_ASM_TM_CLONE_TABLE_SECTION
 686 #define TARGET_ASM_TM_CLONE_TABLE_SECTION darwin_tm_clone_table_section
 687
 688 #undef  TARGET_ASM_RELOC_RW_MASK
 689 #define TARGET_ASM_RELOC_RW_MASK machopic_reloc_rw_mask
 690
 691 /* Globalizing directive for a label.  */
 692 #define GLOBAL_ASM_OP "\t.globl "
 693 #define TARGET_ASM_GLOBALIZE_LABEL darwin_globalize_label
 694
 695 /* Emit an assembler directive to set visibility for a symbol.  Used
 696    to support visibility attribute and Darwin's private extern
 697    feature.  */
 698 #undef TARGET_ASM_ASSEMBLE_VISIBILITY
 699 #define TARGET_ASM_ASSEMBLE_VISIBILITY darwin_assemble_visibility
 700
 701 /* Extra attributes for Darwin.  */
 702 #define SUBTARGET_ATTRIBUTE_TABLE                                            \
 703   /* { name, min_len, max_len, decl_req, type_req, fn_type_req, handler,     \
 704        affects_type_identity } */                                                    \
 705   { "apple_kext_compatibility", 0, 0, false, true, false,                    \
 706     darwin_handle_kext_attribute, false },                                   \
 707   { "weak_import", 0, 0, true, false, false,                                 \
 708     darwin_handle_weak_import_attribute, false }
 709
 710 #undef ASM_GENERATE_INTERNAL_LABEL
 711 #define ASM_GENERATE_INTERNAL_LABEL(LABEL,PREFIX,NUM)   \
 712   sprintf (LABEL, "*%s%ld", PREFIX, (long)(NUM))
 713
 714 #undef TARGET_ASM_MARK_DECL_PRESERVED
 715 #define TARGET_ASM_MARK_DECL_PRESERVED darwin_mark_decl_preserved
 716
 717 /* Set on a symbol with SYMBOL_FLAG_FUNCTION or
 718    MACHO_SYMBOL_FLAG_VARIABLE to indicate that the function or
 719    variable has been defined in this translation unit.
 720    When porting Mach-O to new architectures you need to make
 721    sure these aren't clobbered by the backend.  */
 722
 723 #define MACHO_SYMBOL_FLAG_VARIABLE (SYMBOL_FLAG_MACH_DEP)
 724 #define MACHO_SYMBOL_FLAG_DEFINED ((SYMBOL_FLAG_MACH_DEP) << 1)
 725
 726 /* Set on a symbol to indicate when fix-and-continue style code
 727    generation is being used and the symbol refers to a static symbol
 728    that should be rebound from new instances of a translation unit to
 729    the original instance of the data.  */
 730
 731 #define MACHO_SYMBOL_STATIC ((SYMBOL_FLAG_MACH_DEP) << 2)
 732
 733 /* Symbolic names for various things we might know about a symbol.  */
 734
 735 enum machopic_addr_class {
 736   MACHOPIC_UNDEFINED,
 737   MACHOPIC_DEFINED_DATA,
 738   MACHOPIC_UNDEFINED_DATA,
 739   MACHOPIC_DEFINED_FUNCTION,
 740   MACHOPIC_UNDEFINED_FUNCTION
 741 };
 742
 743 /* Macros defining the various PIC cases.  */
 744
 745 #undef  MACHO_DYNAMIC_NO_PIC_P
 746 #define MACHO_DYNAMIC_NO_PIC_P  (TARGET_MACHO_DYNAMIC_NO_PIC)
 747 #undef  MACHOPIC_INDIRECT
 748 #define MACHOPIC_INDIRECT       (flag_pic || MACHO_DYNAMIC_NO_PIC_P)
 749 #define MACHOPIC_JUST_INDIRECT  (MACHO_DYNAMIC_NO_PIC_P)
 750 #undef  MACHOPIC_PURE
 751 #define MACHOPIC_PURE           (flag_pic && ! MACHO_DYNAMIC_NO_PIC_P)
 752
 753 #undef TARGET_ENCODE_SECTION_INFO
 754 #define TARGET_ENCODE_SECTION_INFO  darwin_encode_section_info
 755 #undef TARGET_STRIP_NAME_ENCODING
 756 #define TARGET_STRIP_NAME_ENCODING  default_strip_name_encoding
 757
 758 #define GEN_BINDER_NAME_FOR_STUB(BUF,STUB,STUB_LENGTH)          \
 759   do {                                                          \
 760     const char *const stub_ = (STUB);                           \
 761     char *buffer_ = (BUF);                                      \
 762     strcpy (buffer_, stub_);                                    \
 763     if (stub_[0] == '"')                                        \
 764       {                                                         \
 765         strcpy (buffer_ + (STUB_LENGTH) - 1, "_binder\"");      \
 766       }                                                         \
 767     else                                                        \
 768       {                                                         \
 769         strcpy (buffer_ + (STUB_LENGTH), "_binder");            \
 770       }                                                         \
 771   } while (0)
 772
 773 #define GEN_SYMBOL_NAME_FOR_SYMBOL(BUF,SYMBOL,SYMBOL_LENGTH)    \
 774   do {                                                          \
 775     const char *const symbol_ = (SYMBOL);                       \
 776     char *buffer_ = (BUF);                                      \
 777     if (name_needs_quotes (symbol_) && symbol_[0] != '"')       \
 778       {                                                         \
 779           sprintf (buffer_, "\"%s\"", symbol_);                 \
 780       }                                                         \
 781     else                                                        \
 782       {                                                         \
 783         strcpy (buffer_, symbol_);                              \
 784       }                                                         \
 785   } while (0)
 786
 787 /* Given a symbol name string, create the lazy pointer version
 788    of the symbol name.  */
 789
 790 #define GEN_LAZY_PTR_NAME_FOR_SYMBOL(BUF,SYMBOL,SYMBOL_LENGTH)  \
 791   do {                                                          \
 792     const char *symbol_ = (SYMBOL);                             \
 793     char *buffer_ = (BUF);                                      \
 794     if (symbol_[0] == '"')                                      \
 795       {                                                         \
 796         strcpy (buffer_, "\"L");                                \
 797         strcpy (buffer_ + 2, symbol_ + 1);                      \
 798         strcpy (buffer_ + (SYMBOL_LENGTH), "$lazy_ptr\"");      \
 799       }                                                         \
 800     else if (name_needs_quotes (symbol_))                       \
 801       {                                                         \
 802         strcpy (buffer_, "\"L");                                \
 803         strcpy (buffer_ + 2, symbol_);                          \
 804         strcpy (buffer_ + (SYMBOL_LENGTH) + 2, "$lazy_ptr\"");  \
 805       }                                                         \
 806     else                                                        \
 807       {                                                         \
 808         strcpy (buffer_, "L");                                  \
 809         strcpy (buffer_ + 1, symbol_);                          \
 810         strcpy (buffer_ + (SYMBOL_LENGTH) + 1, "$lazy_ptr");    \
 811       }                                                         \
 812   } while (0)
 813
 814 #define EH_FRAME_SECTION_NAME   "__TEXT"
 815 #define EH_FRAME_SECTION_ATTR ",coalesced,no_toc+strip_static_syms+live_support"
 816
 817 /* Java runtime class list.  */
 818 #define JCR_SECTION_NAME "__DATA,jcr,regular,no_dead_strip"
 819
 820 #undef ASM_PREFERRED_EH_DATA_FORMAT
 821 #define ASM_PREFERRED_EH_DATA_FORMAT(CODE,GLOBAL)  \
 822   (((CODE) == 2 && (GLOBAL) == 1) \
 823    ? (DW_EH_PE_pcrel | DW_EH_PE_indirect | DW_EH_PE_sdata4) : \
 824      ((CODE) == 1 || (GLOBAL) == 0) ? DW_EH_PE_pcrel : DW_EH_PE_absptr)
 825
 826 #define ASM_OUTPUT_DWARF_DELTA(FILE,SIZE,LABEL1,LABEL2)  \
 827   darwin_asm_output_dwarf_delta (FILE, SIZE, LABEL1, LABEL2)
 828
 829 #define ASM_OUTPUT_DWARF_OFFSET(FILE,SIZE,LABEL,BASE)  \
 830   darwin_asm_output_dwarf_offset (FILE, SIZE, LABEL, BASE)
 831
 832 #define ASM_MAYBE_OUTPUT_ENCODED_ADDR_RTX(ASM_OUT_FILE, ENCODING, SIZE, ADDR, DONE)     \
 833       if (ENCODING == ASM_PREFERRED_EH_DATA_FORMAT (2, 1)) {                            \
 834         darwin_non_lazy_pcrel (ASM_OUT_FILE, ADDR);                                     \
 835         goto DONE;                                                                      \
 836       }
 837
 838 /* Experimentally, putting jump tables in text is faster on SPEC.
 839    Also this is needed for correctness for coalesced functions.  */
 840
 841 #ifndef JUMP_TABLES_IN_TEXT_SECTION
 842 #define JUMP_TABLES_IN_TEXT_SECTION 1
 843 #endif
 844
 845 #define TARGET_TERMINATE_DW2_EH_FRAME_INFO false
 846
 847 #define TARGET_ASM_INIT_SECTIONS darwin_init_sections
 848 #undef TARGET_ASM_NAMED_SECTION
 849 #define TARGET_ASM_NAMED_SECTION darwin_asm_named_section
 850
 851 #define DARWIN_REGISTER_TARGET_PRAGMAS()                        \
 852   do {                                                          \
 853     if (!flag_preprocess_only)                                  \
 854       cpp_register_pragma (parse_in, NULL, "mark",              \
 855                            darwin_pragma_ignore, false);        \
 856     c_register_pragma (0, "options", darwin_pragma_options);    \
 857     c_register_pragma (0, "segment", darwin_pragma_ignore);     \
 858     c_register_pragma (0, "unused", darwin_pragma_unused);      \
 859     c_register_pragma (0, "ms_struct", darwin_pragma_ms_struct); \
 860   } while (0)
 861
 862 #undef ASM_APP_ON
 863 #define ASM_APP_ON ""
 864 #undef ASM_APP_OFF
 865 #define ASM_APP_OFF ""
 866
 867 void darwin_register_frameworks (const char *, const char *, int);
 868 void darwin_register_objc_includes (const char *, const char *, int);
 869 #define TARGET_EXTRA_PRE_INCLUDES darwin_register_objc_includes
 870 #define TARGET_EXTRA_INCLUDES darwin_register_frameworks
 871
 872 void add_framework_path (char *);
 873 #define TARGET_OPTF add_framework_path
 874
 875 #define TARGET_POSIX_IO
 876
 877 /* All new versions of Darwin have C99 functions.  */
 878
 879 #define TARGET_C99_FUNCTIONS 1
 880
 881 #define WINT_TYPE "int"
 882
 883 /* Every program on darwin links against libSystem which contains the pthread
 884    routines, so there's no need to explicitly call out when doing threaded
 885    work.  */
 886
 887 #undef GOMP_SELF_SPECS
 888 #define GOMP_SELF_SPECS ""
 889 #undef GTM_SELF_SPECS
 890 #define GTM_SELF_SPECS ""
 891
 892 /* Darwin disables section anchors by default.
 893    They should be enabled per arch where support exists in that arch.  */
 894 #define TARGET_ASM_OUTPUT_ANCHOR NULL
 895 #define DARWIN_SECTION_ANCHORS 0
 896
 897 #define HAVE_ENABLE_EXECUTE_STACK
 898
 899 /* For Apple KEXTs, we make the constructors return this to match gcc
 900    2.95.  */
 901 #define TARGET_CXX_CDTOR_RETURNS_THIS (darwin_kextabi_p)
 902 #define TARGET_KEXTABI flag_apple_kext
 903
 904 /* We have target-specific builtins.  */
 905 #define SUBTARGET_FOLD_BUILTIN darwin_fold_builtin
 906
 907 #define TARGET_N_FORMAT_TYPES 1
 908 #define TARGET_FORMAT_TYPES darwin_additional_format_types
 909
 910 #ifndef USED_FOR_TARGET
 911 extern void darwin_driver_init (unsigned int *,struct cl_decoded_option **);
 912 #define GCC_DRIVER_HOST_INITIALIZATION \
 913   darwin_driver_init (&decoded_options_count, &decoded_options)
 914 #endif
 915
 916 /* The Apple assembler and linker do not support constructor priorities.  */
 917 #undef SUPPORTS_INIT_PRIORITY
 918 #define SUPPORTS_INIT_PRIORITY 0
 919
 920 /* When building cross-compilers (and native crosses) we shall default to
 921    providing an osx-version-min of this unless overridden by the User.  */
 922 #define DEF_MIN_OSX_VERSION "10.4"
 923
 924 #endif /* CONFIG_DARWIN_H */