gcc/config/darwin.h

   1 /* Target definitions for Darwin (Mac OS X) systems.
   2    Copyright (C) 1989-2014 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 " LINK_COMPRESS_DEBUG_SPEC \
 175    "%X %{s} %{t} %{Z} %{u*} \
 176     %{e*} %{r} \
 177     %{o*}%{!o:-o a.out} \
 178     %{!nostdlib:%{!nostartfiles:%S}} \
 179     %{L*} %(link_libgcc) %o %{fprofile-arcs|fprofile-generate*|coverage:-lgcov} \
 180     %{fopenmp|ftree-parallelize-loops=*: \
 181       %{static|static-libgcc|static-libstdc++|static-libgfortran: libgomp.a%s; : -lgomp } } \
 182     %{fgnu-tm: \
 183       %{static|static-libgcc|static-libstdc++|static-libgfortran: libitm.a%s; : -litm } } \
 184     %{!nostdlib:%{!nodefaultlibs:\
 185       %{%:sanitize(address): -lasan } \
 186       %{%:sanitize(undefined): -lubsan } \
 187       %(link_ssp) %(link_gcc_c_sequence)\
 188     }}\
 189     %{!nostdlib:%{!nostartfiles:%E}} %{T*} %{F*} }}}}}}}"
 190
 191 #define DSYMUTIL "\ndsymutil"
 192
 193 #define DSYMUTIL_SPEC \
 194    "%{!fdump=*:%{!fsyntax-only:%{!c:%{!M:%{!MM:%{!E:%{!S:\
 195     %{v} \
 196     %{gdwarf-2:%{!gstabs*:%{!g0: -idsym}}}\
 197     %{.c|.cc|.C|.cpp|.cp|.c++|.cxx|.CPP|.m|.mm: \
 198     %{gdwarf-2:%{!gstabs*:%{!g0: -dsym}}}}}}}}}}}"
 199
 200 #define LINK_COMMAND_SPEC LINK_COMMAND_SPEC_A DSYMUTIL_SPEC
 201
 202 /* Tell collect2 to run dsymutil for us as necessary.  */
 203 #define COLLECT_RUN_DSYMUTIL 1
 204
 205 /* We only want one instance of %G, since libSystem (Darwin's -lc) does not depend
 206    on libgcc.  */
 207 #undef  LINK_GCC_C_SEQUENCE_SPEC
 208 #define LINK_GCC_C_SEQUENCE_SPEC "%G %L"
 209
 210 #ifdef TARGET_SYSTEM_ROOT
 211 #define LINK_SYSROOT_SPEC \
 212   "%{isysroot*:-syslibroot %*;:-syslibroot " TARGET_SYSTEM_ROOT "}"
 213 #else
 214 #define LINK_SYSROOT_SPEC "%{isysroot*:-syslibroot %*}"
 215 #endif
 216
 217 #define PIE_SPEC "%{fpie|pie|fPIE:}"
 218
 219 /* Please keep the random linker options in alphabetical order (modulo
 220    'Z' and 'no' prefixes). Note that options taking arguments may appear
 221    multiple times on a command line with different arguments each time,
 222    so put a * after their names so all of them get passed.  */
 223 #define LINK_SPEC  \
 224   "%{static}%{!static:-dynamic} \
 225    %:remove-outfile(-ldl) \
 226    %:remove-outfile(-lm) \
 227    %:remove-outfile(-lpthread) \
 228    %{fgnu-runtime: %{static|static-libgcc: \
 229                      %:replace-outfile(-lobjc libobjc-gnu.a%s); \
 230                     :%:replace-outfile(-lobjc -lobjc-gnu ) } }\
 231    %{static|static-libgcc|static-libgfortran:%:replace-outfile(-lgfortran libgfortran.a%s)}\
 232    %{static|static-libgcc|static-libstdc++|static-libgfortran:%:replace-outfile(-lgomp libgomp.a%s)}\
 233    %{static|static-libgcc|static-libstdc++:%:replace-outfile(-lstdc++ libstdc++.a%s)}\
 234    %{!Zdynamiclib: \
 235      %{Zforce_cpusubtype_ALL:-arch %(darwin_arch) -force_cpusubtype_ALL} \
 236      %{!Zforce_cpusubtype_ALL:-arch %(darwin_subarch)} \
 237      %{Zbundle:-bundle} \
 238      %{Zbundle_loader*:-bundle_loader %*} \
 239      %{client_name*} \
 240      %{compatibility_version*:%e-compatibility_version only allowed with -dynamiclib\
 241 } \
 242      %{current_version*:%e-current_version only allowed with -dynamiclib} \
 243      %{Zforce_flat_namespace:-force_flat_namespace} \
 244      %{Zinstall_name*:%e-install_name only allowed with -dynamiclib} \
 245      %{keep_private_externs} \
 246      %{private_bundle} \
 247     } \
 248    %{Zdynamiclib: -dylib \
 249      %{Zbundle:%e-bundle not allowed with -dynamiclib} \
 250      %{Zbundle_loader*:%e-bundle_loader not allowed with -dynamiclib} \
 251      %{client_name*:%e-client_name not allowed with -dynamiclib} \
 252      %{compatibility_version*:-dylib_compatibility_version %*} \
 253      %{current_version*:-dylib_current_version %*} \
 254      %{Zforce_cpusubtype_ALL:-arch %(darwin_arch)} \
 255      %{!Zforce_cpusubtype_ALL: -arch %(darwin_subarch)} \
 256      %{Zforce_flat_namespace:%e-force_flat_namespace not allowed with -dynamiclib} \
 257      %{Zinstall_name*:-dylib_install_name %*} \
 258      %{keep_private_externs:%e-keep_private_externs not allowed with -dynamiclib} \
 259      %{private_bundle:%e-private_bundle not allowed with -dynamiclib} \
 260     } \
 261    %{Zall_load:-all_load} \
 262    %{Zallowable_client*:-allowable_client %*} \
 263    %{Zbind_at_load:-bind_at_load} \
 264    %{Zarch_errors_fatal:-arch_errors_fatal} \
 265    %{Zdead_strip:-dead_strip} \
 266    %{Zno_dead_strip_inits_and_terms:-no_dead_strip_inits_and_terms} \
 267    %{Zdylib_file*:-dylib_file %*} \
 268    %{Zdynamic:-dynamic}\
 269    %{Zexported_symbols_list*:-exported_symbols_list %*} \
 270    %{Zflat_namespace:-flat_namespace} \
 271    %{headerpad_max_install_names} \
 272    %{Zimage_base*:-image_base %*} \
 273    %{Zinit*:-init %*} \
 274    %{!mmacosx-version-min=*:-macosx_version_min %(darwin_minversion)} \
 275    %{mmacosx-version-min=*:-macosx_version_min %*} \
 276    %{nomultidefs} \
 277    %{Zmulti_module:-multi_module} %{Zsingle_module:-single_module} \
 278    %{Zmultiply_defined*:-multiply_defined %*} \
 279    %{!Zmultiply_defined*:%{shared-libgcc: \
 280      %:version-compare(< 10.5 mmacosx-version-min= -multiply_defined) \
 281      %:version-compare(< 10.5 mmacosx-version-min= suppress)}} \
 282    %{Zmultiplydefinedunused*:-multiply_defined_unused %*} \
 283    " PIE_SPEC " \
 284    %{prebind} %{noprebind} %{nofixprebinding} %{prebind_all_twolevel_modules} \
 285    %{read_only_relocs} \
 286    %{sectcreate*} %{sectorder*} %{seg1addr*} %{segprot*} \
 287    %{Zsegaddr*:-segaddr %*} \
 288    %{Zsegs_read_only_addr*:-segs_read_only_addr %*} \
 289    %{Zsegs_read_write_addr*:-segs_read_write_addr %*} \
 290    %{Zseg_addr_table*: -seg_addr_table %*} \
 291    %{Zfn_seg_addr_table_filename*:-seg_addr_table_filename %*} \
 292    %{sub_library*} %{sub_umbrella*} \
 293    " LINK_SYSROOT_SPEC " \
 294    %{twolevel_namespace} %{twolevel_namespace_hints} \
 295    %{Zumbrella*: -umbrella %*} \
 296    %{undefined*} \
 297    %{Zunexported_symbols_list*:-unexported_symbols_list %*} \
 298    %{Zweak_reference_mismatches*:-weak_reference_mismatches %*} \
 299    %{!Zweak_reference_mismatches*:-weak_reference_mismatches non-weak} \
 300    %{X} \
 301    %{y*} \
 302    %{w} \
 303    %{pagezero_size*} %{segs_read_*} %{seglinkedit} %{noseglinkedit}  \
 304    %{sectalign*} %{sectobjectsymbols*} %{segcreate*} %{whyload} \
 305    %{whatsloaded} %{dylinker_install_name*} \
 306    %{dylinker} %{Mach} "
 307
 308
 309 /* Machine dependent libraries.  */
 310
 311 #define LIB_SPEC "%{!static:-lSystem}"
 312
 313 /* Support -mmacosx-version-min by supplying different (stub) libgcc_s.dylib
 314    libraries to link against, and by not linking against libgcc_s on
 315    earlier-than-10.3.9.
 316
 317    Note that by default, -lgcc_eh is not linked against!  This is
 318    because in a future version of Darwin the EH frame information may
 319    be in a new format, or the fallback routine might be changed; if
 320    you want to explicitly link against the static version of those
 321    routines, because you know you don't need to unwind through system
 322    libraries, you need to explicitly say -static-libgcc.
 323
 324    If it is linked against, it has to be before -lgcc, because it may
 325    need symbols from -lgcc.  */
 326 #undef REAL_LIBGCC_SPEC
 327 #define REAL_LIBGCC_SPEC                                                   \
 328    "%{static-libgcc|static: -lgcc_eh -lgcc;                                \
 329       shared-libgcc|fexceptions|fgnu-runtime:                              \
 330        %:version-compare(!> 10.5 mmacosx-version-min= -lgcc_s.10.4)        \
 331        %:version-compare(>< 10.5 10.6 mmacosx-version-min= -lgcc_s.10.5)   \
 332        %:version-compare(!> 10.5 mmacosx-version-min= -lgcc_ext.10.4)      \
 333        %:version-compare(>= 10.5 mmacosx-version-min= -lgcc_ext.10.5)      \
 334        -lgcc ;                                                             \
 335       :%:version-compare(>< 10.3.9 10.5 mmacosx-version-min= -lgcc_s.10.4) \
 336        %:version-compare(>< 10.5 10.6 mmacosx-version-min= -lgcc_s.10.5)   \
 337        %:version-compare(!> 10.5 mmacosx-version-min= -lgcc_ext.10.4)      \
 338        %:version-compare(>= 10.5 mmacosx-version-min= -lgcc_ext.10.5)      \
 339        -lgcc }"
 340
 341 /* We specify crt0.o as -lcrt0.o so that ld will search the library path.
 342
 343    crt3.o provides __cxa_atexit on systems that don't have it.  Since
 344    it's only used with C++, which requires passing -shared-libgcc, key
 345    off that to avoid unnecessarily adding a destructor to every
 346    powerpc program built.  */
 347
 348 #undef  STARTFILE_SPEC
 349 #define STARTFILE_SPEC                                                      \
 350   "%{Zdynamiclib: %(darwin_dylib1) %{fgnu-tm: -lcrttms.o}}                  \
 351    %{!Zdynamiclib:%{Zbundle:%{!static:                                      \
 352         %:version-compare(< 10.6 mmacosx-version-min= -lbundle1.o)          \
 353         %{fgnu-tm: -lcrttms.o}}}                                            \
 354      %{!Zbundle:%{pg:%{static:-lgcrt0.o}                                    \
 355                      %{!static:%{object:-lgcrt0.o}                          \
 356                                %{!object:%{preload:-lgcrt0.o}               \
 357                                  %{!preload:-lgcrt1.o                       \
 358                                  %:version-compare(>= 10.8 mmacosx-version-min= -no_new_main) \
 359                                  %(darwin_crt2)}}}}    \
 360                 %{!pg:%{static:-lcrt0.o}                                    \
 361                       %{!static:%{object:-lcrt0.o}                          \
 362                                 %{!object:%{preload:-lcrt0.o}               \
 363                                   %{!preload: %(darwin_crt1)                \
 364                                               %(darwin_crt2)}}}}}}          \
 365   %{shared-libgcc:%:version-compare(< 10.5 mmacosx-version-min= crt3.o%s)}"
 366
 367 /* We want a destructor last in the list.  */
 368 #define TM_DESTRUCTOR "%{fgnu-tm: -lcrttme.o}"
 369 #define ENDFILE_SPEC TM_DESTRUCTOR
 370
 371 #define DARWIN_EXTRA_SPECS                                              \
 372   { "darwin_crt1", DARWIN_CRT1_SPEC },                                  \
 373   { "darwin_dylib1", DARWIN_DYLIB1_SPEC },                              \
 374   { "darwin_minversion", DARWIN_MINVERSION_SPEC },
 375
 376 #define DARWIN_DYLIB1_SPEC                                              \
 377   "%:version-compare(!> 10.5 mmacosx-version-min= -ldylib1.o)           \
 378    %:version-compare(>< 10.5 10.6 mmacosx-version-min= -ldylib1.10.5.o)"
 379
 380 #define DARWIN_CRT1_SPEC                                                \
 381   "%:version-compare(!> 10.5 mmacosx-version-min= -lcrt1.o)             \
 382    %:version-compare(>< 10.5 10.6 mmacosx-version-min= -lcrt1.10.5.o)   \
 383    %:version-compare(>< 10.6 10.8 mmacosx-version-min= -lcrt1.10.6.o)   \
 384    %{fgnu-tm: -lcrttms.o}"
 385
 386 /* Default Darwin ASM_SPEC, very simple.  */
 387 #define ASM_SPEC "-arch %(darwin_arch) \
 388   %{Zforce_cpusubtype_ALL:-force_cpusubtype_ALL} \
 389   %{static}"
 390
 391 /* Default ASM_DEBUG_SPEC.  Darwin's as cannot currently produce dwarf
 392    debugging data.  */
 393
 394 #define ASM_DEBUG_SPEC  "%{g*:%{!g0:%{!gdwarf*:--gstabs}}}"
 395
 396 /* We still allow output of STABS.  */
 397
 398 #define DBX_DEBUGGING_INFO 1
 399
 400 #define DWARF2_DEBUGGING_INFO 1
 401 #define PREFERRED_DEBUGGING_TYPE DBX_DEBUG
 402
 403 #define DEBUG_FRAME_SECTION     "__DWARF,__debug_frame,regular,debug"
 404 #define DEBUG_INFO_SECTION      "__DWARF,__debug_info,regular,debug"
 405 #define DEBUG_ABBREV_SECTION    "__DWARF,__debug_abbrev,regular,debug"
 406 #define DEBUG_ARANGES_SECTION   "__DWARF,__debug_aranges,regular,debug"
 407 #define DEBUG_MACINFO_SECTION   "__DWARF,__debug_macinfo,regular,debug"
 408 #define DEBUG_LINE_SECTION      "__DWARF,__debug_line,regular,debug"
 409 #define DEBUG_LOC_SECTION       "__DWARF,__debug_loc,regular,debug"
 410 #define DEBUG_PUBNAMES_SECTION  "__DWARF,__debug_pubnames,regular,debug"
 411 #define DEBUG_PUBTYPES_SECTION  "__DWARF,__debug_pubtypes,regular,debug"
 412 #define DEBUG_STR_SECTION       "__DWARF,__debug_str,regular,debug"
 413 #define DEBUG_RANGES_SECTION    "__DWARF,__debug_ranges,regular,debug"
 414 #define DEBUG_MACRO_SECTION    "__DWARF,__debug_macro,regular,debug"
 415
 416 #define TARGET_WANT_DEBUG_PUB_SECTIONS true
 417
 418 #define TARGET_FORCE_AT_COMP_DIR true
 419
 420 /* When generating stabs debugging, use N_BINCL entries.  */
 421
 422 #define DBX_USE_BINCL
 423
 424 /* There is no limit to the length of stabs strings.  */
 425
 426 #define DBX_CONTIN_LENGTH 0
 427
 428 /* gdb needs a null N_SO at the end of each file for scattered loading.  */
 429
 430 #define DBX_OUTPUT_NULL_N_SO_AT_MAIN_SOURCE_FILE_END
 431
 432 /* GCC's definition of 'one_only' is the same as its definition of 'weak'.  */
 433 #define MAKE_DECL_ONE_ONLY(DECL) (DECL_WEAK (DECL) = 1)
 434
 435 /* Mach-O supports 'weak imports', and 'weak definitions' in coalesced
 436    sections.  machopic_select_section ensures that weak variables go in
 437    coalesced sections.  Weak aliases (or any other kind of aliases) are
 438    not supported.  Weak symbols that aren't visible outside the .s file
 439    are not supported.  */
 440 #define ASM_WEAKEN_DECL(FILE, DECL, NAME, ALIAS)                        \
 441   do {                                                                  \
 442     if (ALIAS)                                                          \
 443       {                                                                 \
 444         warning (0, "alias definitions not supported in Mach-O; ignored");      \
 445         break;                                                          \
 446       }                                                                 \
 447                                                                         \
 448     if (! DECL_EXTERNAL (DECL) && TREE_PUBLIC (DECL))                   \
 449       targetm.asm_out.globalize_label (FILE, NAME);                     \
 450     if (DECL_EXTERNAL (DECL))                                           \
 451       fputs ("\t.weak_reference ", FILE);                               \
 452     else if (lookup_attribute ("weak_import", DECL_ATTRIBUTES (DECL)))  \
 453       break;                                                            \
 454     else if (TREE_PUBLIC (DECL))                                        \
 455       fputs ("\t.weak_definition ", FILE);                              \
 456     else                                                                \
 457       break;                                                            \
 458     assemble_name (FILE, NAME);                                         \
 459     fputc ('\n', FILE);                                                 \
 460   } while (0)
 461
 462 /* Darwin has the pthread routines in libSystem, which every program
 463    links to, so there's no need for weak-ness for that.  */
 464 #define GTHREAD_USE_WEAK 0
 465
 466 /* The Darwin linker doesn't want coalesced symbols to appear in
 467    a static archive's table of contents. */
 468 #undef TARGET_WEAK_NOT_IN_ARCHIVE_TOC
 469 #define TARGET_WEAK_NOT_IN_ARCHIVE_TOC 1
 470
 471 /* On Darwin, we don't (at the time of writing) have linkonce sections
 472    with names, so it's safe to make the class data not comdat.  */
 473 #define TARGET_CXX_CLASS_DATA_ALWAYS_COMDAT hook_bool_void_false
 474
 475 /* For efficiency, on Darwin the RTTI information that is always
 476    emitted in the standard C++ library should not be COMDAT.  */
 477 #define TARGET_CXX_LIBRARY_RTTI_COMDAT hook_bool_void_false
 478
 479 /* We make exception information linkonce. */
 480 #undef TARGET_USES_WEAK_UNWIND_INFO
 481 #define TARGET_USES_WEAK_UNWIND_INFO 1
 482
 483 /* We need to use a nonlocal label for the start of an EH frame: the
 484    Darwin linker requires that a coalesced section start with a label.
 485    Unfortunately, it also requires that 'debug' sections don't contain
 486    labels.  */
 487 #undef FRAME_BEGIN_LABEL
 488 #define FRAME_BEGIN_LABEL (for_eh ? "EH_frame" : "Lframe")
 489
 490 /* Emit a label for the FDE corresponding to DECL.  EMPTY means
 491    emit a label for an empty FDE. */
 492 #define TARGET_ASM_EMIT_UNWIND_LABEL darwin_emit_unwind_label
 493
 494 /* Emit a label to separate the exception table.  */
 495 #define TARGET_ASM_EMIT_EXCEPT_TABLE_LABEL darwin_emit_except_table_label
 496
 497 /* Our profiling scheme doesn't LP labels and counter words.  */
 498
 499 #define NO_PROFILE_COUNTERS     1
 500
 501 #undef  INIT_SECTION_ASM_OP
 502 #define INIT_SECTION_ASM_OP ""
 503
 504 #undef  INVOKE__main
 505
 506 #define TARGET_ASM_CONSTRUCTOR  machopic_asm_out_constructor
 507 #define TARGET_ASM_DESTRUCTOR   machopic_asm_out_destructor
 508
 509 /* Always prefix with an underscore.  */
 510
 511 #define USER_LABEL_PREFIX "_"
 512
 513 /* A dummy symbol that will be replaced with the function base name.  */
 514 #define MACHOPIC_FUNCTION_BASE_NAME "<pic base>"
 515
 516 /* Don't output a .file directive.  That is only used by the assembler for
 517    error reporting.  */
 518 #undef  TARGET_ASM_FILE_START_FILE_DIRECTIVE
 519 #define TARGET_ASM_FILE_START_FILE_DIRECTIVE false
 520
 521 #undef  TARGET_ASM_FILE_END
 522 #define TARGET_ASM_FILE_END darwin_file_end
 523
 524 /* Because Mach-O relocations have a counter from 1 to 255 for the
 525    section number they apply to, it is necessary to output all
 526    normal sections before the LTO sections, to make sure that the
 527    sections that may have relocations always have a section number
 528    smaller than 255.  */
 529 #undef  TARGET_ASM_LTO_START
 530 #define TARGET_ASM_LTO_START darwin_asm_lto_start
 531 #undef  TARGET_ASM_LTO_END
 532 #define TARGET_ASM_LTO_END darwin_asm_lto_end
 533
 534 #define ASM_OUTPUT_SKIP(FILE,SIZE)  \
 535   fprintf (FILE, "\t.space "HOST_WIDE_INT_PRINT_UNSIGNED"\n", SIZE)
 536
 537 /* Give ObjC methods pretty symbol names.  */
 538
 539 #undef  OBJC_GEN_METHOD_LABEL
 540 #define OBJC_GEN_METHOD_LABEL(BUF,IS_INST,CLASS_NAME,CAT_NAME,SEL_NAME,NUM) \
 541   do { if (CAT_NAME)                                                    \
 542          sprintf (BUF, "%c[%s(%s) %s]", (IS_INST) ? '-' : '+',          \
 543                   (CLASS_NAME), (CAT_NAME), (SEL_NAME));                \
 544        else                                                             \
 545          sprintf (BUF, "%c[%s %s]", (IS_INST) ? '-' : '+',              \
 546                   (CLASS_NAME), (SEL_NAME));                            \
 547      } while (0)
 548
 549 #undef ASM_DECLARE_OBJECT_NAME
 550 #define ASM_DECLARE_OBJECT_NAME(FILE, NAME, DECL) \
 551         darwin_asm_declare_object_name ((FILE), (NAME), (DECL))
 552
 553 /* The RTTI data (e.g., __ti4name) is common and public (and static),
 554    but it does need to be referenced via indirect PIC data pointers.
 555    The machopic_define_symbol calls are telling the machopic subsystem
 556    that the name *is* defined in this module, so it doesn't need to
 557    make them indirect.  */
 558
 559 #define ASM_DECLARE_FUNCTION_NAME(FILE, NAME, DECL)                     \
 560   do {                                                                  \
 561     const char *xname = NAME;                                           \
 562     if (GET_CODE (XEXP (DECL_RTL (DECL), 0)) != SYMBOL_REF)             \
 563       xname = IDENTIFIER_POINTER (DECL_NAME (DECL));                    \
 564     if (! DECL_WEAK (DECL)                                              \
 565         && ((TREE_STATIC (DECL)                                         \
 566              && (!DECL_COMMON (DECL) || !TREE_PUBLIC (DECL)))           \
 567             || DECL_INITIAL (DECL)))                                    \
 568         machopic_define_symbol (DECL_RTL (DECL));                       \
 569     if ((TREE_STATIC (DECL)                                             \
 570          && (!DECL_COMMON (DECL) || !TREE_PUBLIC (DECL)))               \
 571         || DECL_INITIAL (DECL))                                         \
 572       (* targetm.encode_section_info) (DECL, DECL_RTL (DECL), false);   \
 573     ASM_OUTPUT_FUNCTION_LABEL (FILE, xname, DECL);                      \
 574   } while (0)
 575
 576 #undef TARGET_ASM_DECLARE_CONSTANT_NAME
 577 #define TARGET_ASM_DECLARE_CONSTANT_NAME darwin_asm_declare_constant_name
 578
 579 /* Wrap new method names in quotes so the assembler doesn't gag.
 580    Make Objective-C internal symbols local and in doing this, we need
 581    to accommodate the name mangling done by c++ on file scope locals.  */
 582
 583 int darwin_label_is_anonymous_local_objc_name (const char *name);
 584
 585 #undef  ASM_OUTPUT_LABELREF
 586 #define ASM_OUTPUT_LABELREF(FILE,NAME)                                       \
 587   do {                                                                       \
 588        const char *xname = (NAME);                                           \
 589        if (! strcmp (xname, MACHOPIC_FUNCTION_BASE_NAME))                    \
 590          machopic_output_function_base_name(FILE);                           \
 591        else if (xname[0] == '&' || xname[0] == '*')                          \
 592          {                                                                   \
 593            int len = strlen (xname);                                         \
 594            if (len > 6 && !strcmp ("$stub", xname + len - 5))                \
 595              machopic_validate_stub_or_non_lazy_ptr (xname);                 \
 596            else if (len > 7 && !strcmp ("$stub\"", xname + len - 6))         \
 597              machopic_validate_stub_or_non_lazy_ptr (xname);                 \
 598            else if (len > 14 && !strcmp ("$non_lazy_ptr", xname + len - 13)) \
 599              machopic_validate_stub_or_non_lazy_ptr (xname);                 \
 600            else if (len > 15 && !strcmp ("$non_lazy_ptr\"", xname + len - 14)) \
 601              machopic_validate_stub_or_non_lazy_ptr (xname);                 \
 602            if (xname[1] != '"' && name_needs_quotes (&xname[1]))             \
 603              fprintf (FILE, "\"%s\"", &xname[1]);                            \
 604            else                                                              \
 605              fputs (&xname[1], FILE);                                        \
 606          }                                                                   \
 607        else if (xname[0] == '+' || xname[0] == '-')                          \
 608          fprintf (FILE, "\"%s\"", xname);                                    \
 609        else if (darwin_label_is_anonymous_local_objc_name (xname))           \
 610          fprintf (FILE, "L%s", xname);                                       \
 611        else if (xname[0] != '"' && name_needs_quotes (xname))                \
 612          asm_fprintf (FILE, "\"%U%s\"", xname);                              \
 613        else                                                                  \
 614          asm_fprintf (FILE, "%U%s", xname);                                  \
 615   } while (0)
 616
 617 /* Output before executable code.  */
 618 #undef TEXT_SECTION_ASM_OP
 619 #define TEXT_SECTION_ASM_OP "\t.text"
 620
 621 /* Output before writable data.  */
 622
 623 #undef DATA_SECTION_ASM_OP
 624 #define DATA_SECTION_ASM_OP "\t.data"
 625
 626 #undef  ALIGN_ASM_OP
 627 #define ALIGN_ASM_OP            ".align"
 628
 629 #undef  ASM_OUTPUT_ALIGN
 630 #define ASM_OUTPUT_ALIGN(FILE,LOG)      \
 631   if ((LOG) != 0)                       \
 632     fprintf (FILE, "\t%s\t%d\n", ALIGN_ASM_OP, (LOG))
 633
 634 /* The maximum alignment which the object file format can support in
 635    bits.  For Mach-O, this is 2^15 bytes.  */
 636
 637 #undef  MAX_OFILE_ALIGNMENT
 638 #define MAX_OFILE_ALIGNMENT (0x8000 * 8)
 639
 640 #define L2_MAX_OFILE_ALIGNMENT 15
 641
 642 /*  These are the three variants that emit referenced blank space.  */
 643 #define ASM_OUTPUT_ALIGNED_BSS(FILE, DECL, NAME, SIZE, ALIGN)           \
 644         darwin_output_aligned_bss ((FILE), (DECL), (NAME), (SIZE), (ALIGN))
 645
 646 #undef  ASM_OUTPUT_ALIGNED_DECL_LOCAL
 647 #define ASM_OUTPUT_ALIGNED_DECL_LOCAL(FILE, DECL, NAME, SIZE, ALIGN)    \
 648         darwin_asm_output_aligned_decl_local                            \
 649                                   ((FILE), (DECL), (NAME), (SIZE), (ALIGN))
 650
 651 #undef  ASM_OUTPUT_ALIGNED_DECL_COMMON
 652 #define ASM_OUTPUT_ALIGNED_DECL_COMMON(FILE, DECL, NAME, SIZE, ALIGN)   \
 653         darwin_asm_output_aligned_decl_common                           \
 654                                    ((FILE), (DECL), (NAME), (SIZE), (ALIGN))
 655
 656 /* The generic version, archs should over-ride where required.  */
 657 #define MACHOPIC_NL_SYMBOL_PTR_SECTION ".non_lazy_symbol_pointer"
 658
 659 /* Declare the section variables.  */
 660 #ifndef USED_FOR_TARGET
 661 enum darwin_section_enum {
 662 #define DEF_SECTION(NAME, FLAGS, DIRECTIVE, OBJC) NAME,
 663 #include "darwin-sections.def"
 664 #undef DEF_SECTION
 665   NUM_DARWIN_SECTIONS
 666 };
 667 extern GTY(()) section * darwin_sections[NUM_DARWIN_SECTIONS];
 668 #endif
 669
 670 #undef  TARGET_ASM_SELECT_SECTION
 671 #define TARGET_ASM_SELECT_SECTION machopic_select_section
 672
 673 #undef  TARGET_ASM_FUNCTION_SECTION
 674 #define TARGET_ASM_FUNCTION_SECTION darwin_function_section
 675
 676 #undef  TARGET_ASM_FUNCTION_SWITCHED_TEXT_SECTIONS
 677 #define TARGET_ASM_FUNCTION_SWITCHED_TEXT_SECTIONS \
 678         darwin_function_switched_text_sections
 679
 680 #undef  TARGET_ASM_SELECT_RTX_SECTION
 681 #define TARGET_ASM_SELECT_RTX_SECTION machopic_select_rtx_section
 682 #undef  TARGET_ASM_UNIQUE_SECTION
 683 #define TARGET_ASM_UNIQUE_SECTION darwin_unique_section
 684 #undef  TARGET_ASM_FUNCTION_RODATA_SECTION
 685 #define TARGET_ASM_FUNCTION_RODATA_SECTION default_no_function_rodata_section
 686
 687 #undef  TARGET_ASM_TM_CLONE_TABLE_SECTION
 688 #define TARGET_ASM_TM_CLONE_TABLE_SECTION darwin_tm_clone_table_section
 689
 690 #undef  TARGET_ASM_RELOC_RW_MASK
 691 #define TARGET_ASM_RELOC_RW_MASK machopic_reloc_rw_mask
 692
 693 /* Globalizing directive for a label.  */
 694 #define GLOBAL_ASM_OP "\t.globl "
 695 #define TARGET_ASM_GLOBALIZE_LABEL darwin_globalize_label
 696
 697 /* Emit an assembler directive to set visibility for a symbol.  Used
 698    to support visibility attribute and Darwin's private extern
 699    feature.  */
 700 #undef TARGET_ASM_ASSEMBLE_VISIBILITY
 701 #define TARGET_ASM_ASSEMBLE_VISIBILITY darwin_assemble_visibility
 702
 703 /* Extra attributes for Darwin.  */
 704 #define SUBTARGET_ATTRIBUTE_TABLE                                            \
 705   /* { name, min_len, max_len, decl_req, type_req, fn_type_req, handler,     \
 706        affects_type_identity } */                                                    \
 707   { "apple_kext_compatibility", 0, 0, false, true, false,                    \
 708     darwin_handle_kext_attribute, false },                                   \
 709   { "weak_import", 0, 0, true, false, false,                                 \
 710     darwin_handle_weak_import_attribute, false }
 711
 712 #undef ASM_GENERATE_INTERNAL_LABEL
 713 #define ASM_GENERATE_INTERNAL_LABEL(LABEL,PREFIX,NUM)   \
 714   sprintf (LABEL, "*%s%ld", PREFIX, (long)(NUM))
 715
 716 #undef TARGET_ASM_MARK_DECL_PRESERVED
 717 #define TARGET_ASM_MARK_DECL_PRESERVED darwin_mark_decl_preserved
 718
 719 /* Set on a symbol with SYMBOL_FLAG_FUNCTION or
 720    MACHO_SYMBOL_FLAG_VARIABLE to indicate that the function or
 721    variable has been defined in this translation unit.
 722    When porting Mach-O to new architectures you need to make
 723    sure these aren't clobbered by the backend.  */
 724
 725 #define MACHO_SYMBOL_FLAG_VARIABLE (SYMBOL_FLAG_MACH_DEP)
 726 #define MACHO_SYMBOL_FLAG_DEFINED ((SYMBOL_FLAG_MACH_DEP) << 1)
 727
 728 /* Set on a symbol to indicate when fix-and-continue style code
 729    generation is being used and the symbol refers to a static symbol
 730    that should be rebound from new instances of a translation unit to
 731    the original instance of the data.  */
 732
 733 #define MACHO_SYMBOL_STATIC ((SYMBOL_FLAG_MACH_DEP) << 2)
 734
 735 /* Symbolic names for various things we might know about a symbol.  */
 736
 737 enum machopic_addr_class {
 738   MACHOPIC_UNDEFINED,
 739   MACHOPIC_DEFINED_DATA,
 740   MACHOPIC_UNDEFINED_DATA,
 741   MACHOPIC_DEFINED_FUNCTION,
 742   MACHOPIC_UNDEFINED_FUNCTION
 743 };
 744
 745 /* Macros defining the various PIC cases.  */
 746
 747 #undef  MACHO_DYNAMIC_NO_PIC_P
 748 #define MACHO_DYNAMIC_NO_PIC_P  (TARGET_MACHO_DYNAMIC_NO_PIC)
 749 #undef  MACHOPIC_INDIRECT
 750 #define MACHOPIC_INDIRECT       (flag_pic || MACHO_DYNAMIC_NO_PIC_P)
 751 #define MACHOPIC_JUST_INDIRECT  (MACHO_DYNAMIC_NO_PIC_P)
 752 #undef  MACHOPIC_PURE
 753 #define MACHOPIC_PURE           (flag_pic && ! MACHO_DYNAMIC_NO_PIC_P)
 754
 755 #undef TARGET_ENCODE_SECTION_INFO
 756 #define TARGET_ENCODE_SECTION_INFO  darwin_encode_section_info
 757 #undef TARGET_STRIP_NAME_ENCODING
 758 #define TARGET_STRIP_NAME_ENCODING  default_strip_name_encoding
 759
 760 #define GEN_BINDER_NAME_FOR_STUB(BUF,STUB,STUB_LENGTH)          \
 761   do {                                                          \
 762     const char *const stub_ = (STUB);                           \
 763     char *buffer_ = (BUF);                                      \
 764     strcpy (buffer_, stub_);                                    \
 765     if (stub_[0] == '"')                                        \
 766       {                                                         \
 767         strcpy (buffer_ + (STUB_LENGTH) - 1, "_binder\"");      \
 768       }                                                         \
 769     else                                                        \
 770       {                                                         \
 771         strcpy (buffer_ + (STUB_LENGTH), "_binder");            \
 772       }                                                         \
 773   } while (0)
 774
 775 #define GEN_SYMBOL_NAME_FOR_SYMBOL(BUF,SYMBOL,SYMBOL_LENGTH)    \
 776   do {                                                          \
 777     const char *const symbol_ = (SYMBOL);                       \
 778     char *buffer_ = (BUF);                                      \
 779     if (name_needs_quotes (symbol_) && symbol_[0] != '"')       \
 780       {                                                         \
 781           sprintf (buffer_, "\"%s\"", symbol_);                 \
 782       }                                                         \
 783     else                                                        \
 784       {                                                         \
 785         strcpy (buffer_, symbol_);                              \
 786       }                                                         \
 787   } while (0)
 788
 789 /* Given a symbol name string, create the lazy pointer version
 790    of the symbol name.  */
 791
 792 #define GEN_LAZY_PTR_NAME_FOR_SYMBOL(BUF,SYMBOL,SYMBOL_LENGTH)  \
 793   do {                                                          \
 794     const char *symbol_ = (SYMBOL);                             \
 795     char *buffer_ = (BUF);                                      \
 796     if (symbol_[0] == '"')                                      \
 797       {                                                         \
 798         strcpy (buffer_, "\"L");                                \
 799         strcpy (buffer_ + 2, symbol_ + 1);                      \
 800         strcpy (buffer_ + (SYMBOL_LENGTH), "$lazy_ptr\"");      \
 801       }                                                         \
 802     else if (name_needs_quotes (symbol_))                       \
 803       {                                                         \
 804         strcpy (buffer_, "\"L");                                \
 805         strcpy (buffer_ + 2, symbol_);                          \
 806         strcpy (buffer_ + (SYMBOL_LENGTH) + 2, "$lazy_ptr\"");  \
 807       }                                                         \
 808     else                                                        \
 809       {                                                         \
 810         strcpy (buffer_, "L");                                  \
 811         strcpy (buffer_ + 1, symbol_);                          \
 812         strcpy (buffer_ + (SYMBOL_LENGTH) + 1, "$lazy_ptr");    \
 813       }                                                         \
 814   } while (0)
 815
 816 #define EH_FRAME_SECTION_NAME   "__TEXT"
 817 #define EH_FRAME_SECTION_ATTR ",coalesced,no_toc+strip_static_syms+live_support"
 818
 819 /* Java runtime class list.  */
 820 #define JCR_SECTION_NAME "__DATA,jcr,regular,no_dead_strip"
 821
 822 #undef ASM_PREFERRED_EH_DATA_FORMAT
 823 #define ASM_PREFERRED_EH_DATA_FORMAT(CODE,GLOBAL)  \
 824   (((CODE) == 2 && (GLOBAL) == 1) \
 825    ? (DW_EH_PE_pcrel | DW_EH_PE_indirect | DW_EH_PE_sdata4) : \
 826      ((CODE) == 1 || (GLOBAL) == 0) ? DW_EH_PE_pcrel : DW_EH_PE_absptr)
 827
 828 #define ASM_OUTPUT_DWARF_DELTA(FILE,SIZE,LABEL1,LABEL2)  \
 829   darwin_asm_output_dwarf_delta (FILE, SIZE, LABEL1, LABEL2)
 830
 831 #define ASM_OUTPUT_DWARF_OFFSET(FILE,SIZE,LABEL,BASE)  \
 832   darwin_asm_output_dwarf_offset (FILE, SIZE, LABEL, BASE)
 833
 834 #define ASM_MAYBE_OUTPUT_ENCODED_ADDR_RTX(ASM_OUT_FILE, ENCODING, SIZE, ADDR, DONE)     \
 835       if (ENCODING == ASM_PREFERRED_EH_DATA_FORMAT (2, 1)) {                            \
 836         darwin_non_lazy_pcrel (ASM_OUT_FILE, ADDR);                                     \
 837         goto DONE;                                                                      \
 838       }
 839
 840 /* Experimentally, putting jump tables in text is faster on SPEC.
 841    Also this is needed for correctness for coalesced functions.  */
 842
 843 #ifndef JUMP_TABLES_IN_TEXT_SECTION
 844 #define JUMP_TABLES_IN_TEXT_SECTION 1
 845 #endif
 846
 847 #define TARGET_TERMINATE_DW2_EH_FRAME_INFO false
 848
 849 #define TARGET_ASM_INIT_SECTIONS darwin_init_sections
 850 #undef TARGET_ASM_NAMED_SECTION
 851 #define TARGET_ASM_NAMED_SECTION darwin_asm_named_section
 852
 853 #define DARWIN_REGISTER_TARGET_PRAGMAS()                        \
 854   do {                                                          \
 855     if (!flag_preprocess_only)                                  \
 856       cpp_register_pragma (parse_in, NULL, "mark",              \
 857                            darwin_pragma_ignore, false);        \
 858     c_register_pragma (0, "options", darwin_pragma_options);    \
 859     c_register_pragma (0, "segment", darwin_pragma_ignore);     \
 860     c_register_pragma (0, "unused", darwin_pragma_unused);      \
 861     c_register_pragma (0, "ms_struct", darwin_pragma_ms_struct); \
 862   } while (0)
 863
 864 #undef ASM_APP_ON
 865 #define ASM_APP_ON ""
 866 #undef ASM_APP_OFF
 867 #define ASM_APP_OFF ""
 868
 869 void darwin_register_frameworks (const char *, const char *, int);
 870 void darwin_register_objc_includes (const char *, const char *, int);
 871 #define TARGET_EXTRA_PRE_INCLUDES darwin_register_objc_includes
 872 #define TARGET_EXTRA_INCLUDES darwin_register_frameworks
 873
 874 void add_framework_path (char *);
 875 #define TARGET_OPTF add_framework_path
 876
 877 #define TARGET_POSIX_IO
 878
 879 #define WINT_TYPE "int"
 880
 881 /* Every program on darwin links against libSystem which contains the pthread
 882    routines, so there's no need to explicitly call out when doing threaded
 883    work.  */
 884
 885 #undef GOMP_SELF_SPECS
 886 #define GOMP_SELF_SPECS ""
 887 #undef GTM_SELF_SPECS
 888 #define GTM_SELF_SPECS ""
 889
 890 /* Darwin disables section anchors by default.
 891    They should be enabled per arch where support exists in that arch.  */
 892 #define TARGET_ASM_OUTPUT_ANCHOR NULL
 893 #define DARWIN_SECTION_ANCHORS 0
 894
 895 #define HAVE_ENABLE_EXECUTE_STACK
 896
 897 /* For Apple KEXTs, we make the constructors return this to match gcc
 898    2.95.  */
 899 #define TARGET_CXX_CDTOR_RETURNS_THIS (darwin_kextabi_p)
 900 #define TARGET_KEXTABI flag_apple_kext
 901
 902 /* We have target-specific builtins.  */
 903 #define SUBTARGET_FOLD_BUILTIN darwin_fold_builtin
 904
 905 #define TARGET_N_FORMAT_TYPES 1
 906 #define TARGET_FORMAT_TYPES darwin_additional_format_types
 907
 908 #ifndef USED_FOR_TARGET
 909 extern void darwin_driver_init (unsigned int *,struct cl_decoded_option **);
 910 #define GCC_DRIVER_HOST_INITIALIZATION \
 911   darwin_driver_init (&decoded_options_count, &decoded_options)
 912 #endif
 913
 914 /* The Apple assembler and linker do not support constructor priorities.  */
 915 #undef SUPPORTS_INIT_PRIORITY
 916 #define SUPPORTS_INIT_PRIORITY 0
 917
 918 /* When building cross-compilers (and native crosses) we shall default to
 919    providing an osx-version-min of this unless overridden by the User.  */
 920 #define DEF_MIN_OSX_VERSION "10.4"
 921
 922 #endif /* CONFIG_DARWIN_H */