gcc/config/darwin.h

   1 /* Target definitions for Darwin (Mac OS X) systems.
   2    Copyright (C) 1989, 1990, 1991, 1992, 1993, 2000, 2001, 2002, 2003, 2004,
   3    2005, 2006, 2007, 2008, 2009, 2010, 2011
   4    Free Software Foundation, Inc.
   5    Contributed by Apple Computer Inc.
   6
   7 This file is part of GCC.
   8
   9 GCC is free software; you can redistribute it and/or modify
  10 it under the terms of the GNU General Public License as published by
  11 the Free Software Foundation; either version 3, or (at your option)
  12 any later version.
  13
  14 GCC is distributed in the hope that it will be useful,
  15 but WITHOUT ANY WARRANTY; without even the implied warranty of
  16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17 GNU General Public License for more details.
  18
  19 Under Section 7 of GPL version 3, you are granted additional
  20 permissions described in the GCC Runtime Library Exception, version
  21 3.1, as published by the Free Software Foundation.
  22
  23 You should have received a copy of the GNU General Public License and
  24 a copy of the GCC Runtime Library Exception along with this program;
  25 see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
  26 <http://www.gnu.org/licenses/>.  */
  27
  28 #ifndef CONFIG_DARWIN_H
  29 #define CONFIG_DARWIN_H
  30
  31 /* The definitions in this file are common to all processor types
  32    running Darwin, which is the kernel for Mac OS X.  Darwin is
  33    basically a BSD user layer laid over a Mach kernel, then evolved
  34    for many years (at NeXT) in parallel with other Unix systems.  So
  35    while the runtime is a somewhat idiosyncratic Mach-based thing,
  36    other definitions look like they would for a BSD variant.  */
  37
  38 /* Although NeXT ran on many different architectures, as of Jan 2001
  39    the only supported Darwin targets are PowerPC and x86.  */
  40
  41 /* One of Darwin's NeXT legacies is the Mach-O format, which is partly
  42    like a.out and partly like COFF, with additional features like
  43    multi-architecture binary support.  */
  44
  45 #define DARWIN_X86 0
  46 #define DARWIN_PPC 0
  47
  48 /* Don't assume anything about the header files.  */
  49 #define NO_IMPLICIT_EXTERN_C
  50
  51 /* Suppress g++ attempt to link in the math library automatically. */
  52 #define MATH_LIBRARY ""
  53
  54 /* We have atexit.  */
  55
  56 #define HAVE_ATEXIT
  57
  58 /* Define an empty body for the function do_global_dtors() in libgcc2.c.  */
  59
  60 #define DO_GLOBAL_DTORS_BODY
  61
  62 /* The string value for __SIZE_TYPE__.  */
  63
  64 #ifndef SIZE_TYPE
  65 #define SIZE_TYPE "long unsigned int"
  66 #endif
  67
  68 /* Type used for ptrdiff_t, as a string used in a declaration.  */
  69
  70 #undef  PTRDIFF_TYPE
  71 #define PTRDIFF_TYPE "int"
  72
  73 /* wchar_t is int.  */
  74
  75 #undef  WCHAR_TYPE
  76 #define WCHAR_TYPE "int"
  77 #undef  WCHAR_TYPE_SIZE
  78 #define WCHAR_TYPE_SIZE 32
  79
  80 #define INT8_TYPE "signed char"
  81 #define INT16_TYPE "short int"
  82 #define INT32_TYPE "int"
  83 #define INT64_TYPE "long long int"
  84 #define UINT8_TYPE "unsigned char"
  85 #define UINT16_TYPE "short unsigned int"
  86 #define UINT32_TYPE "unsigned int"
  87 #define UINT64_TYPE "long long unsigned int"
  88
  89 #define INT_LEAST8_TYPE "signed char"
  90 #define INT_LEAST16_TYPE "short int"
  91 #define INT_LEAST32_TYPE "int"
  92 #define INT_LEAST64_TYPE "long long int"
  93 #define UINT_LEAST8_TYPE "unsigned char"
  94 #define UINT_LEAST16_TYPE "short unsigned int"
  95 #define UINT_LEAST32_TYPE "unsigned int"
  96 #define UINT_LEAST64_TYPE "long long unsigned int"
  97
  98 #define INT_FAST8_TYPE "signed char"
  99 #define INT_FAST16_TYPE "short int"
 100 #define INT_FAST32_TYPE "int"
 101 #define INT_FAST64_TYPE "long long int"
 102 #define UINT_FAST8_TYPE "unsigned char"
 103 #define UINT_FAST16_TYPE "short unsigned int"
 104 #define UINT_FAST32_TYPE "unsigned int"
 105 #define UINT_FAST64_TYPE "long long unsigned int"
 106
 107 #define INTPTR_TYPE "long int"
 108 #define UINTPTR_TYPE "long unsigned int"
 109
 110 #define SIG_ATOMIC_TYPE "int"
 111
 112 /* Default to using the NeXT-style runtime, since that's what is
 113    pre-installed on Darwin systems.  */
 114
 115 #define NEXT_OBJC_RUNTIME 1
 116
 117 /* Don't default to pcc-struct-return, because gcc is the only compiler, and
 118    we want to retain compatibility with older gcc versions.  */
 119
 120 #undef  DEFAULT_PCC_STRUCT_RETURN
 121 #define DEFAULT_PCC_STRUCT_RETURN 0
 122
 123 /* True if pragma ms_struct is in effect.  */
 124 extern GTY(()) int darwin_ms_struct;
 125
 126 #define DRIVER_SELF_SPECS                                       \
 127   "%{gfull:-g -fno-eliminate-unused-debug-symbols} %<gfull",    \
 128   "%{gused:-g -feliminate-unused-debug-symbols} %<gused",       \
 129   "%{fapple-kext|mkernel:-static}",                             \
 130   "%{shared:-Zdynamiclib} %<shared"
 131
 132 #define DARWIN_CC1_SPEC                                                 \
 133   "%{findirect-virtual-calls: -fapple-kext} %<findirect-virtual-calls " \
 134   "%{fterminated-vtables: -fapple-kext} %<fterminated-vtables "         \
 135   "%<filelist* %<framework*"
 136
 137 #define SUBSUBTARGET_OVERRIDE_OPTIONS                                   \
 138   do {                                                                  \
 139     darwin_override_options ();                                         \
 140   } while (0)
 141
 142 #define SUBTARGET_C_COMMON_OVERRIDE_OPTIONS do {                        \
 143     if (!global_options_set.x_flag_objc_sjlj_exceptions)                \
 144       global_options.x_flag_objc_sjlj_exceptions =                      \
 145                                 flag_next_runtime && !TARGET_64BIT;     \
 146     if (flag_mkernel || flag_apple_kext)                                \
 147       {                                                                 \
 148         if (flag_use_cxa_atexit == 2)                                   \
 149           flag_use_cxa_atexit = 0;                                      \
 150         /* kexts should always be built without the coalesced sections  \
 151            because the kernel loader doesn't grok such sections.  */    \
 152         flag_weak = 0;                                                  \
 153         /* No RTTI in kexts.  */                                        \
 154         flag_rtti = 0;                                                  \
 155       }                                                                 \
 156   } while (0)
 157
 158 /* Machine dependent cpp options.  Don't add more options here, add
 159    them to darwin_cpp_builtins in darwin-c.c.  */
 160
 161 #undef  CPP_SPEC
 162 #define CPP_SPEC "%{static:%{!dynamic:-D__STATIC__}}%{!static:-D__DYNAMIC__}" \
 163         " %{pthread:-D_REENTRANT}"
 164
 165 /* This is mostly a clone of the standard LINK_COMMAND_SPEC, plus
 166    precomp, libtool, and fat build additions.
 167
 168    In general, random Darwin linker flags should go into LINK_SPEC
 169    instead of LINK_COMMAND_SPEC.  The command spec is better for
 170    specifying the handling of options understood by generic Unix
 171    linkers, and for positional arguments like libraries.  */
 172
 173 #define LINK_COMMAND_SPEC_A \
 174    "%{!fdump=*:%{!fsyntax-only:%{!c:%{!M:%{!MM:%{!E:%{!S:\
 175     %(linker)" \
 176     LINK_PLUGIN_SPEC \
 177     "%{flto*:%<fcompare-debug*} \
 178     %{flto*} \
 179     %l %X %{s} %{t} %{Z} %{u*} \
 180     %{e*} %{r} \
 181     %{o*}%{!o:-o a.out} \
 182     %{!nostdlib:%{!nostartfiles:%S}} \
 183     %{L*} %(link_libgcc) %o %{fprofile-arcs|fprofile-generate*|coverage:-lgcov} \
 184     %{fopenmp|ftree-parallelize-loops=*: \
 185       %{static|static-libgcc|static-libstdc++|static-libgfortran: libgomp.a%s; : -lgomp } } \
 186     %{!nostdlib:%{!nodefaultlibs:\
 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 %(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 ENDFILE_SPEC "%{fgnu-tm: -lcrttme.o}"
 367
 368 #define DARWIN_EXTRA_SPECS                                              \
 369   { "darwin_crt1", DARWIN_CRT1_SPEC },                                  \
 370   { "darwin_dylib1", DARWIN_DYLIB1_SPEC },                              \
 371   { "darwin_minversion", DARWIN_MINVERSION_SPEC },
 372
 373 #define DARWIN_DYLIB1_SPEC                                              \
 374   "%:version-compare(!> 10.5 mmacosx-version-min= -ldylib1.o)           \
 375    %:version-compare(>< 10.5 10.6 mmacosx-version-min= -ldylib1.10.5.o)"
 376
 377 #define DARWIN_CRT1_SPEC                                                \
 378   "%:version-compare(!> 10.5 mmacosx-version-min= -lcrt1.o)             \
 379    %:version-compare(>< 10.5 10.6 mmacosx-version-min= -lcrt1.10.5.o)   \
 380    %:version-compare(>= 10.6 mmacosx-version-min= -lcrt1.10.6.o)        \
 381    %{fgnu-tm: -lcrttms.o}"
 382
 383 /* Default Darwin ASM_SPEC, very simple.  */
 384 #define ASM_SPEC "-arch %(darwin_arch) \
 385   %{Zforce_cpusubtype_ALL:-force_cpusubtype_ALL} \
 386   %{static}"
 387
 388 /* Default ASM_DEBUG_SPEC.  Darwin's as cannot currently produce dwarf
 389    debugging data.  */
 390
 391 #define ASM_DEBUG_SPEC  "%{g*:%{!g0:%{!gdwarf*:--gstabs}}}"
 392
 393 /* We still allow output of STABS.  */
 394
 395 #define DBX_DEBUGGING_INFO 1
 396
 397 #define DWARF2_DEBUGGING_INFO 1
 398 #define PREFERRED_DEBUGGING_TYPE DBX_DEBUG
 399
 400 #define DEBUG_FRAME_SECTION     "__DWARF,__debug_frame,regular,debug"
 401 #define DEBUG_INFO_SECTION      "__DWARF,__debug_info,regular,debug"
 402 #define DEBUG_ABBREV_SECTION    "__DWARF,__debug_abbrev,regular,debug"
 403 #define DEBUG_ARANGES_SECTION   "__DWARF,__debug_aranges,regular,debug"
 404 #define DEBUG_MACINFO_SECTION   "__DWARF,__debug_macinfo,regular,debug"
 405 #define DEBUG_LINE_SECTION      "__DWARF,__debug_line,regular,debug"
 406 #define DEBUG_LOC_SECTION       "__DWARF,__debug_loc,regular,debug"
 407 #define DEBUG_PUBNAMES_SECTION  "__DWARF,__debug_pubnames,regular,debug"
 408 #define DEBUG_PUBTYPES_SECTION  "__DWARF,__debug_pubtypes,regular,debug"
 409 #define DEBUG_STR_SECTION       "__DWARF,__debug_str,regular,debug"
 410 #define DEBUG_RANGES_SECTION    "__DWARF,__debug_ranges,regular,debug"
 411 #define DEBUG_MACRO_SECTION    "__DWARF,__debug_macro,regular,debug"
 412
 413 #define TARGET_WANT_DEBUG_PUB_SECTIONS true
 414
 415 /* When generating stabs debugging, use N_BINCL entries.  */
 416
 417 #define DBX_USE_BINCL
 418
 419 /* There is no limit to the length of stabs strings.  */
 420
 421 #define DBX_CONTIN_LENGTH 0
 422
 423 /* gdb needs a null N_SO at the end of each file for scattered loading.  */
 424
 425 #define DBX_OUTPUT_NULL_N_SO_AT_MAIN_SOURCE_FILE_END
 426
 427 /* GCC's definition of 'one_only' is the same as its definition of 'weak'.  */
 428 #define MAKE_DECL_ONE_ONLY(DECL) (DECL_WEAK (DECL) = 1)
 429
 430 /* Mach-O supports 'weak imports', and 'weak definitions' in coalesced
 431    sections.  machopic_select_section ensures that weak variables go in
 432    coalesced sections.  Weak aliases (or any other kind of aliases) are
 433    not supported.  Weak symbols that aren't visible outside the .s file
 434    are not supported.  */
 435 #define ASM_WEAKEN_DECL(FILE, DECL, NAME, ALIAS)                        \
 436   do {                                                                  \
 437     if (ALIAS)                                                          \
 438       {                                                                 \
 439         warning (0, "alias definitions not supported in Mach-O; ignored");      \
 440         break;                                                          \
 441       }                                                                 \
 442                                                                         \
 443     if (! DECL_EXTERNAL (DECL) && TREE_PUBLIC (DECL))                   \
 444       targetm.asm_out.globalize_label (FILE, NAME);                     \
 445     if (DECL_EXTERNAL (DECL))                                           \
 446       fputs ("\t.weak_reference ", FILE);                               \
 447     else if (lookup_attribute ("weak_import", DECL_ATTRIBUTES (DECL)))  \
 448       break;                                                            \
 449     else if (TREE_PUBLIC (DECL))                                        \
 450       fputs ("\t.weak_definition ", FILE);                              \
 451     else                                                                \
 452       break;                                                            \
 453     assemble_name (FILE, NAME);                                         \
 454     fputc ('\n', FILE);                                                 \
 455   } while (0)
 456
 457 /* Darwin has the pthread routines in libSystem, which every program
 458    links to, so there's no need for weak-ness for that.  */
 459 #define GTHREAD_USE_WEAK 0
 460
 461 /* The Darwin linker imposes two limitations on common symbols: they
 462    can't have hidden visibility, and they can't appear in dylibs.  As
 463    a consequence, we should never use common symbols to represent
 464    vague linkage. */
 465 #undef USE_COMMON_FOR_ONE_ONLY
 466 #define USE_COMMON_FOR_ONE_ONLY 0
 467
 468 /* The Darwin linker doesn't want coalesced symbols to appear in
 469    a static archive's table of contents. */
 470 #undef TARGET_WEAK_NOT_IN_ARCHIVE_TOC
 471 #define TARGET_WEAK_NOT_IN_ARCHIVE_TOC 1
 472
 473 /* On Darwin, we don't (at the time of writing) have linkonce sections
 474    with names, so it's safe to make the class data not comdat.  */
 475 #define TARGET_CXX_CLASS_DATA_ALWAYS_COMDAT hook_bool_void_false
 476
 477 /* For efficiency, on Darwin the RTTI information that is always
 478    emitted in the standard C++ library should not be COMDAT.  */
 479 #define TARGET_CXX_LIBRARY_RTTI_COMDAT hook_bool_void_false
 480
 481 /* We make exception information linkonce. */
 482 #undef TARGET_USES_WEAK_UNWIND_INFO
 483 #define TARGET_USES_WEAK_UNWIND_INFO 1
 484
 485 /* We need to use a nonlocal label for the start of an EH frame: the
 486    Darwin linker requires that a coalesced section start with a label.
 487    Unfortunately, it also requires that 'debug' sections don't contain
 488    labels.  */
 489 #undef FRAME_BEGIN_LABEL
 490 #define FRAME_BEGIN_LABEL (for_eh ? "EH_frame" : "Lframe")
 491
 492 /* Emit a label for the FDE corresponding to DECL.  EMPTY means
 493    emit a label for an empty FDE. */
 494 #define TARGET_ASM_EMIT_UNWIND_LABEL darwin_emit_unwind_label
 495
 496 /* Emit a label to separate the exception table.  */
 497 #define TARGET_ASM_EMIT_EXCEPT_TABLE_LABEL darwin_emit_except_table_label
 498
 499 /* Our profiling scheme doesn't LP labels and counter words.  */
 500
 501 #define NO_PROFILE_COUNTERS     1
 502
 503 #undef  INIT_SECTION_ASM_OP
 504 #define INIT_SECTION_ASM_OP
 505
 506 #undef  INVOKE__main
 507
 508 #define TARGET_ASM_CONSTRUCTOR  machopic_asm_out_constructor
 509 #define TARGET_ASM_DESTRUCTOR   machopic_asm_out_destructor
 510
 511 /* Always prefix with an underscore.  */
 512
 513 #define USER_LABEL_PREFIX "_"
 514
 515 /* A dummy symbol that will be replaced with the function base name.  */
 516 #define MACHOPIC_FUNCTION_BASE_NAME "<pic base>"
 517
 518 /* Don't output a .file directive.  That is only used by the assembler for
 519    error reporting.  */
 520 #undef  TARGET_ASM_FILE_START_FILE_DIRECTIVE
 521 #define TARGET_ASM_FILE_START_FILE_DIRECTIVE false
 522
 523 #undef  TARGET_ASM_FILE_END
 524 #define TARGET_ASM_FILE_END darwin_file_end
 525
 526 /* Because Mach-O relocations have a counter from 1 to 255 for the
 527    section number they apply to, it is necessary to output all
 528    normal sections before the LTO sections, to make sure that the
 529    sections that may have relocations always have a section number
 530    smaller than 255.  */
 531 #undef  TARGET_ASM_LTO_START
 532 #define TARGET_ASM_LTO_START darwin_asm_lto_start
 533 #undef  TARGET_ASM_LTO_END
 534 #define TARGET_ASM_LTO_END darwin_asm_lto_end
 535
 536 #define ASM_OUTPUT_SKIP(FILE,SIZE)  \
 537   fprintf (FILE, "\t.space "HOST_WIDE_INT_PRINT_UNSIGNED"\n", SIZE)
 538
 539 /* Give ObjC methods pretty symbol names.  */
 540
 541 #undef  OBJC_GEN_METHOD_LABEL
 542 #define OBJC_GEN_METHOD_LABEL(BUF,IS_INST,CLASS_NAME,CAT_NAME,SEL_NAME,NUM) \
 543   do { if (CAT_NAME)                                                    \
 544          sprintf (BUF, "%c[%s(%s) %s]", (IS_INST) ? '-' : '+',          \
 545                   (CLASS_NAME), (CAT_NAME), (SEL_NAME));                \
 546        else                                                             \
 547          sprintf (BUF, "%c[%s %s]", (IS_INST) ? '-' : '+',              \
 548                   (CLASS_NAME), (SEL_NAME));                            \
 549      } while (0)
 550
 551 #undef ASM_DECLARE_OBJECT_NAME
 552 #define ASM_DECLARE_OBJECT_NAME(FILE, NAME, DECL) \
 553         darwin_asm_declare_object_name ((FILE), (NAME), (DECL))
 554
 555 /* The RTTI data (e.g., __ti4name) is common and public (and static),
 556    but it does need to be referenced via indirect PIC data pointers.
 557    The machopic_define_symbol calls are telling the machopic subsystem
 558    that the name *is* defined in this module, so it doesn't need to
 559    make them indirect.  */
 560
 561 #define ASM_DECLARE_FUNCTION_NAME(FILE, NAME, DECL)                     \
 562   do {                                                                  \
 563     const char *xname = NAME;                                           \
 564     if (GET_CODE (XEXP (DECL_RTL (DECL), 0)) != SYMBOL_REF)             \
 565       xname = IDENTIFIER_POINTER (DECL_NAME (DECL));                    \
 566     if (! DECL_WEAK (DECL)                                              \
 567         && ((TREE_STATIC (DECL)                                         \
 568              && (!DECL_COMMON (DECL) || !TREE_PUBLIC (DECL)))           \
 569             || DECL_INITIAL (DECL)))                                    \
 570         machopic_define_symbol (DECL_RTL (DECL));                       \
 571     if ((TREE_STATIC (DECL)                                             \
 572          && (!DECL_COMMON (DECL) || !TREE_PUBLIC (DECL)))               \
 573         || DECL_INITIAL (DECL))                                         \
 574       (* targetm.encode_section_info) (DECL, DECL_RTL (DECL), false);   \
 575     ASM_OUTPUT_FUNCTION_LABEL (FILE, xname, DECL);                      \
 576   } while (0)
 577
 578 #undef TARGET_ASM_DECLARE_CONSTANT_NAME
 579 #define TARGET_ASM_DECLARE_CONSTANT_NAME darwin_asm_declare_constant_name
 580
 581 /* Wrap new method names in quotes so the assembler doesn't gag.
 582    Make Objective-C internal symbols local and in doing this, we need
 583    to accommodate the name mangling done by c++ on file scope locals.  */
 584
 585 int darwin_label_is_anonymous_local_objc_name (const char *name);
 586
 587 #undef  ASM_OUTPUT_LABELREF
 588 #define ASM_OUTPUT_LABELREF(FILE,NAME)                                       \
 589   do {                                                                       \
 590        const char *xname = (NAME);                                           \
 591        if (! strcmp (xname, MACHOPIC_FUNCTION_BASE_NAME))                    \
 592          machopic_output_function_base_name(FILE);                           \
 593        else if (xname[0] == '&' || xname[0] == '*')                          \
 594          {                                                                   \
 595            int len = strlen (xname);                                         \
 596            if (len > 6 && !strcmp ("$stub", xname + len - 5))                \
 597              machopic_validate_stub_or_non_lazy_ptr (xname);                 \
 598            else if (len > 7 && !strcmp ("$stub\"", xname + len - 6))         \
 599              machopic_validate_stub_or_non_lazy_ptr (xname);                 \
 600            else if (len > 14 && !strcmp ("$non_lazy_ptr", xname + len - 13)) \
 601              machopic_validate_stub_or_non_lazy_ptr (xname);                 \
 602            else if (len > 15 && !strcmp ("$non_lazy_ptr\"", xname + len - 14)) \
 603              machopic_validate_stub_or_non_lazy_ptr (xname);                 \
 604            if (xname[1] != '"' && name_needs_quotes (&xname[1]))             \
 605              fprintf (FILE, "\"%s\"", &xname[1]);                            \
 606            else                                                              \
 607              fputs (&xname[1], FILE);                                        \
 608          }                                                                   \
 609        else if (xname[0] == '+' || xname[0] == '-')                          \
 610          fprintf (FILE, "\"%s\"", xname);                                    \
 611        else if (darwin_label_is_anonymous_local_objc_name (xname))           \
 612          fprintf (FILE, "L%s", xname);                                       \
 613        else if (!strncmp (xname, ".objc_class_name_", 17))                   \
 614          fprintf (FILE, "%s", xname);                                        \
 615        else if (xname[0] != '"' && name_needs_quotes (xname))                \
 616          fprintf (FILE, "\"%s\"", xname);                                    \
 617        else                                                                  \
 618          asm_fprintf (FILE, "%U%s", xname);                                  \
 619   } while (0)
 620
 621 /* Output before executable code.  */
 622 #undef TEXT_SECTION_ASM_OP
 623 #define TEXT_SECTION_ASM_OP "\t.text"
 624
 625 /* Output before writable data.  */
 626
 627 #undef DATA_SECTION_ASM_OP
 628 #define DATA_SECTION_ASM_OP "\t.data"
 629
 630 #undef  ALIGN_ASM_OP
 631 #define ALIGN_ASM_OP            ".align"
 632
 633 #undef  ASM_OUTPUT_ALIGN
 634 #define ASM_OUTPUT_ALIGN(FILE,LOG)      \
 635   if ((LOG) != 0)                       \
 636     fprintf (FILE, "\t%s\t%d\n", ALIGN_ASM_OP, (LOG))
 637
 638 /* The maximum alignment which the object file format can support in
 639    bits.  For Mach-O, this is 2^15 bytes.  */
 640
 641 #undef  MAX_OFILE_ALIGNMENT
 642 #define MAX_OFILE_ALIGNMENT (0x8000 * 8)
 643
 644 #define L2_MAX_OFILE_ALIGNMENT 15
 645
 646 /*  These are the three variants that emit referenced blank space.  */
 647 #define ASM_OUTPUT_ALIGNED_BSS(FILE, DECL, NAME, SIZE, ALIGN)           \
 648         darwin_output_aligned_bss ((FILE), (DECL), (NAME), (SIZE), (ALIGN))
 649
 650 #undef  ASM_OUTPUT_ALIGNED_DECL_LOCAL
 651 #define ASM_OUTPUT_ALIGNED_DECL_LOCAL(FILE, DECL, NAME, SIZE, ALIGN)    \
 652         darwin_asm_output_aligned_decl_local                            \
 653                                   ((FILE), (DECL), (NAME), (SIZE), (ALIGN))
 654
 655 #undef  ASM_OUTPUT_ALIGNED_DECL_COMMON
 656 #define ASM_OUTPUT_ALIGNED_DECL_COMMON(FILE, DECL, NAME, SIZE, ALIGN)   \
 657         darwin_asm_output_aligned_decl_common                           \
 658                                    ((FILE), (DECL), (NAME), (SIZE), (ALIGN))
 659
 660 /* The generic version, archs should over-ride where required.  */
 661 #define MACHOPIC_NL_SYMBOL_PTR_SECTION ".non_lazy_symbol_pointer"
 662
 663 /* Declare the section variables.  */
 664 #ifndef USED_FOR_TARGET
 665 enum darwin_section_enum {
 666 #define DEF_SECTION(NAME, FLAGS, DIRECTIVE, OBJC) NAME,
 667 #include "darwin-sections.def"
 668 #undef DEF_SECTION
 669   NUM_DARWIN_SECTIONS
 670 };
 671 extern GTY(()) section * darwin_sections[NUM_DARWIN_SECTIONS];
 672 #endif
 673
 674 #undef  TARGET_ASM_SELECT_SECTION
 675 #define TARGET_ASM_SELECT_SECTION machopic_select_section
 676
 677 #undef  TARGET_ASM_FUNCTION_SECTION
 678 #define TARGET_ASM_FUNCTION_SECTION darwin_function_section
 679
 680 #undef  TARGET_ASM_FUNCTION_SWITCHED_TEXT_SECTIONS
 681 #define TARGET_ASM_FUNCTION_SWITCHED_TEXT_SECTIONS \
 682         darwin_function_switched_text_sections
 683
 684 #undef  TARGET_ASM_SELECT_RTX_SECTION
 685 #define TARGET_ASM_SELECT_RTX_SECTION machopic_select_rtx_section
 686 #undef  TARGET_ASM_UNIQUE_SECTION
 687 #define TARGET_ASM_UNIQUE_SECTION darwin_unique_section
 688 #undef  TARGET_ASM_FUNCTION_RODATA_SECTION
 689 #define TARGET_ASM_FUNCTION_RODATA_SECTION default_no_function_rodata_section
 690
 691 #undef  TARGET_ASM_TM_CLONE_TABLE_SECTION
 692 #define TARGET_ASM_TM_CLONE_TABLE_SECTION darwin_tm_clone_table_section
 693
 694 #undef  TARGET_ASM_RELOC_RW_MASK
 695 #define TARGET_ASM_RELOC_RW_MASK machopic_reloc_rw_mask
 696
 697
 698 #define ASM_DECLARE_UNRESOLVED_REFERENCE(FILE,NAME)                     \
 699     do {                                                                \
 700          if (FILE) {                                                    \
 701            if (MACHOPIC_INDIRECT)                                       \
 702              fprintf (FILE, "\t.lazy_reference ");                      \
 703            else                                                         \
 704              fprintf (FILE, "\t.reference ");                           \
 705            assemble_name (FILE, NAME);                                  \
 706            fprintf (FILE, "\n");                                        \
 707          }                                                              \
 708        } while (0)
 709
 710 #define ASM_DECLARE_CLASS_REFERENCE(FILE,NAME)                          \
 711     do {                                                                \
 712          if (FILE) {                                                    \
 713            fprintf (FILE, "\t");                                        \
 714            assemble_name (FILE, NAME);                                  \
 715            fprintf (FILE, "=0\n");                                      \
 716            (*targetm.asm_out.globalize_label) (FILE, NAME);             \
 717          }                                                              \
 718        } while (0)
 719
 720 /* Globalizing directive for a label.  */
 721 #define GLOBAL_ASM_OP "\t.globl "
 722 #define TARGET_ASM_GLOBALIZE_LABEL darwin_globalize_label
 723
 724 /* Emit an assembler directive to set visibility for a symbol.  Used
 725    to support visibility attribute and Darwin's private extern
 726    feature.  */
 727 #undef TARGET_ASM_ASSEMBLE_VISIBILITY
 728 #define TARGET_ASM_ASSEMBLE_VISIBILITY darwin_assemble_visibility
 729
 730 /* Extra attributes for Darwin.  */
 731 #define SUBTARGET_ATTRIBUTE_TABLE                                            \
 732   /* { name, min_len, max_len, decl_req, type_req, fn_type_req, handler,     \
 733        affects_type_identity } */                                                    \
 734   { "apple_kext_compatibility", 0, 0, false, true, false,                    \
 735     darwin_handle_kext_attribute, false },                                   \
 736   { "weak_import", 0, 0, true, false, false,                                 \
 737     darwin_handle_weak_import_attribute, false }
 738
 739 #undef ASM_GENERATE_INTERNAL_LABEL
 740 #define ASM_GENERATE_INTERNAL_LABEL(LABEL,PREFIX,NUM)   \
 741   sprintf (LABEL, "*%s%ld", PREFIX, (long)(NUM))
 742
 743 #undef TARGET_ASM_MARK_DECL_PRESERVED
 744 #define TARGET_ASM_MARK_DECL_PRESERVED darwin_mark_decl_preserved
 745
 746 /* Set on a symbol with SYMBOL_FLAG_FUNCTION or
 747    MACHO_SYMBOL_FLAG_VARIABLE to indicate that the function or
 748    variable has been defined in this translation unit.
 749    When porting Mach-O to new architectures you need to make
 750    sure these aren't clobbered by the backend.  */
 751
 752 #define MACHO_SYMBOL_FLAG_VARIABLE (SYMBOL_FLAG_MACH_DEP)
 753 #define MACHO_SYMBOL_FLAG_DEFINED ((SYMBOL_FLAG_MACH_DEP) << 1)
 754
 755 /* Set on a symbol to indicate when fix-and-continue style code
 756    generation is being used and the symbol refers to a static symbol
 757    that should be rebound from new instances of a translation unit to
 758    the original instance of the data.  */
 759
 760 #define MACHO_SYMBOL_STATIC ((SYMBOL_FLAG_MACH_DEP) << 2)
 761
 762 /* Symbolic names for various things we might know about a symbol.  */
 763
 764 enum machopic_addr_class {
 765   MACHOPIC_UNDEFINED,
 766   MACHOPIC_DEFINED_DATA,
 767   MACHOPIC_UNDEFINED_DATA,
 768   MACHOPIC_DEFINED_FUNCTION,
 769   MACHOPIC_UNDEFINED_FUNCTION
 770 };
 771
 772 /* Macros defining the various PIC cases.  */
 773
 774 #undef  MACHO_DYNAMIC_NO_PIC_P
 775 #define MACHO_DYNAMIC_NO_PIC_P  (TARGET_MACHO_DYNAMIC_NO_PIC)
 776 #undef  MACHOPIC_INDIRECT
 777 #define MACHOPIC_INDIRECT       (flag_pic || MACHO_DYNAMIC_NO_PIC_P)
 778 #define MACHOPIC_JUST_INDIRECT  (MACHO_DYNAMIC_NO_PIC_P)
 779 #undef  MACHOPIC_PURE
 780 #define MACHOPIC_PURE           (flag_pic && ! MACHO_DYNAMIC_NO_PIC_P)
 781
 782 #undef TARGET_ENCODE_SECTION_INFO
 783 #define TARGET_ENCODE_SECTION_INFO  darwin_encode_section_info
 784 #undef TARGET_STRIP_NAME_ENCODING
 785 #define TARGET_STRIP_NAME_ENCODING  default_strip_name_encoding
 786
 787 #define GEN_BINDER_NAME_FOR_STUB(BUF,STUB,STUB_LENGTH)          \
 788   do {                                                          \
 789     const char *const stub_ = (STUB);                           \
 790     char *buffer_ = (BUF);                                      \
 791     strcpy (buffer_, stub_);                                    \
 792     if (stub_[0] == '"')                                        \
 793       {                                                         \
 794         strcpy (buffer_ + (STUB_LENGTH) - 1, "_binder\"");      \
 795       }                                                         \
 796     else                                                        \
 797       {                                                         \
 798         strcpy (buffer_ + (STUB_LENGTH), "_binder");            \
 799       }                                                         \
 800   } while (0)
 801
 802 #define GEN_SYMBOL_NAME_FOR_SYMBOL(BUF,SYMBOL,SYMBOL_LENGTH)    \
 803   do {                                                          \
 804     const char *const symbol_ = (SYMBOL);                       \
 805     char *buffer_ = (BUF);                                      \
 806     if (name_needs_quotes (symbol_) && symbol_[0] != '"')       \
 807       {                                                         \
 808           sprintf (buffer_, "\"%s\"", symbol_);                 \
 809       }                                                         \
 810     else                                                        \
 811       {                                                         \
 812         strcpy (buffer_, symbol_);                              \
 813       }                                                         \
 814   } while (0)
 815
 816 /* Given a symbol name string, create the lazy pointer version
 817    of the symbol name.  */
 818
 819 #define GEN_LAZY_PTR_NAME_FOR_SYMBOL(BUF,SYMBOL,SYMBOL_LENGTH)  \
 820   do {                                                          \
 821     const char *symbol_ = (SYMBOL);                             \
 822     char *buffer_ = (BUF);                                      \
 823     if (symbol_[0] == '"')                                      \
 824       {                                                         \
 825         strcpy (buffer_, "\"L");                                \
 826         strcpy (buffer_ + 2, symbol_ + 1);                      \
 827         strcpy (buffer_ + (SYMBOL_LENGTH), "$lazy_ptr\"");      \
 828       }                                                         \
 829     else if (name_needs_quotes (symbol_))                       \
 830       {                                                         \
 831         strcpy (buffer_, "\"L");                                \
 832         strcpy (buffer_ + 2, symbol_);                          \
 833         strcpy (buffer_ + (SYMBOL_LENGTH) + 2, "$lazy_ptr\"");  \
 834       }                                                         \
 835     else                                                        \
 836       {                                                         \
 837         strcpy (buffer_, "L");                                  \
 838         strcpy (buffer_ + 1, symbol_);                          \
 839         strcpy (buffer_ + (SYMBOL_LENGTH) + 1, "$lazy_ptr");    \
 840       }                                                         \
 841   } while (0)
 842
 843 #define EH_FRAME_SECTION_NAME   "__TEXT"
 844 #define EH_FRAME_SECTION_ATTR ",coalesced,no_toc+strip_static_syms+live_support"
 845
 846 /* Java runtime class list.  */
 847 #define JCR_SECTION_NAME "__DATA,jcr,regular,no_dead_strip"
 848
 849 #undef ASM_PREFERRED_EH_DATA_FORMAT
 850 #define ASM_PREFERRED_EH_DATA_FORMAT(CODE,GLOBAL)  \
 851   (((CODE) == 2 && (GLOBAL) == 1) \
 852    ? (DW_EH_PE_pcrel | DW_EH_PE_indirect | DW_EH_PE_sdata4) : \
 853      ((CODE) == 1 || (GLOBAL) == 0) ? DW_EH_PE_pcrel : DW_EH_PE_absptr)
 854
 855 #define ASM_OUTPUT_DWARF_DELTA(FILE,SIZE,LABEL1,LABEL2)  \
 856   darwin_asm_output_dwarf_delta (FILE, SIZE, LABEL1, LABEL2)
 857
 858 #define ASM_OUTPUT_DWARF_OFFSET(FILE,SIZE,LABEL,BASE)  \
 859   darwin_asm_output_dwarf_offset (FILE, SIZE, LABEL, BASE)
 860
 861 #define ASM_MAYBE_OUTPUT_ENCODED_ADDR_RTX(ASM_OUT_FILE, ENCODING, SIZE, ADDR, DONE)     \
 862       if (ENCODING == ASM_PREFERRED_EH_DATA_FORMAT (2, 1)) {                            \
 863         darwin_non_lazy_pcrel (ASM_OUT_FILE, ADDR);                                     \
 864         goto DONE;                                                                      \
 865       }
 866
 867 /* Experimentally, putting jump tables in text is faster on SPEC.
 868    Also this is needed for correctness for coalesced functions.  */
 869
 870 #ifndef JUMP_TABLES_IN_TEXT_SECTION
 871 #define JUMP_TABLES_IN_TEXT_SECTION 1
 872 #endif
 873
 874 #define TARGET_TERMINATE_DW2_EH_FRAME_INFO false
 875
 876 #define TARGET_ASM_INIT_SECTIONS darwin_init_sections
 877 #undef TARGET_ASM_NAMED_SECTION
 878 #define TARGET_ASM_NAMED_SECTION darwin_asm_named_section
 879
 880 #define DARWIN_REGISTER_TARGET_PRAGMAS()                        \
 881   do {                                                          \
 882     if (!flag_preprocess_only)                                  \
 883       cpp_register_pragma (parse_in, NULL, "mark",              \
 884                            darwin_pragma_ignore, false);        \
 885     c_register_pragma (0, "options", darwin_pragma_options);    \
 886     c_register_pragma (0, "segment", darwin_pragma_ignore);     \
 887     c_register_pragma (0, "unused", darwin_pragma_unused);      \
 888     c_register_pragma (0, "ms_struct", darwin_pragma_ms_struct); \
 889   } while (0)
 890
 891 #undef ASM_APP_ON
 892 #define ASM_APP_ON ""
 893 #undef ASM_APP_OFF
 894 #define ASM_APP_OFF ""
 895
 896 void darwin_register_frameworks (const char *, const char *, int);
 897 void darwin_register_objc_includes (const char *, const char *, int);
 898 #define TARGET_EXTRA_PRE_INCLUDES darwin_register_objc_includes
 899 #define TARGET_EXTRA_INCLUDES darwin_register_frameworks
 900
 901 void add_framework_path (char *);
 902 #define TARGET_OPTF add_framework_path
 903
 904 #define TARGET_POSIX_IO
 905
 906 /* All new versions of Darwin have C99 functions.  */
 907
 908 #define TARGET_C99_FUNCTIONS 1
 909
 910 #define WINT_TYPE "int"
 911
 912 /* Every program on darwin links against libSystem which contains the pthread
 913    routines, so there's no need to explicitly call out when doing threaded
 914    work.  */
 915
 916 #undef GOMP_SELF_SPECS
 917 #define GOMP_SELF_SPECS ""
 918
 919 /* Darwin disables section anchors by default.
 920    They should be enabled per arch where support exists in that arch.  */
 921 #define TARGET_ASM_OUTPUT_ANCHOR NULL
 922 #define DARWIN_SECTION_ANCHORS 0
 923
 924 #define HAVE_ENABLE_EXECUTE_STACK
 925
 926 /* For Apple KEXTs, we make the constructors return this to match gcc
 927    2.95.  */
 928 #define TARGET_CXX_CDTOR_RETURNS_THIS (darwin_kextabi_p)
 929 #define TARGET_KEXTABI flag_apple_kext
 930
 931 /* We have target-specific builtins.  */
 932 #define TARGET_FOLD_BUILTIN darwin_fold_builtin
 933
 934 #define TARGET_N_FORMAT_TYPES 1
 935 #define TARGET_FORMAT_TYPES darwin_additional_format_types
 936
 937 #ifndef USED_FOR_TARGET
 938 extern void darwin_driver_init (unsigned int *,struct cl_decoded_option **);
 939 #define GCC_DRIVER_HOST_INITIALIZATION \
 940   darwin_driver_init (&decoded_options_count, &decoded_options)
 941 #endif
 942
 943 /* The Apple assembler and linker do not support constructor priorities.  */
 944 #undef SUPPORTS_INIT_PRIORITY
 945 #define SUPPORTS_INIT_PRIORITY 0
 946
 947 /* When building cross-compilers (and native crosses) we shall default to
 948    providing an osx-version-min of this unless overridden by the User.  */
 949 #define DEF_MIN_OSX_VERSION "10.4"
 950
 951 #endif /* CONFIG_DARWIN_H */