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
 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   /* Unless set, force ABI=2 for NeXT and m64, 0 otherwise.  */         \
 144   if (!global_options_set.x_flag_objc_abi)                              \
 145     global_options.x_flag_objc_abi                                      \
 146         = (flag_next_runtime && TARGET_64BIT) ? 2 : 0;                  \
 147   /* Objective-C family ABI 2 is only valid for next/m64 at present. */ \
 148   if (global_options_set.x_flag_objc_abi && flag_next_runtime)          \
 149     if (TARGET_64BIT && global_options.x_flag_objc_abi < 2)             \
 150       error_at (UNKNOWN_LOCATION, "%<-fobjc-abi-version%> >= 2 is only" \
 151                 " supported on %<-m64%> targets for"                    \
 152                 " %<-fnext-runtime%>");                                 \
 153   /* Sort out ObjC exceptions: If the runtime is NeXT we default to     \
 154      sjlj for m32 only.  */                                             \
 155   if (!global_options_set.x_flag_objc_sjlj_exceptions)                  \
 156     global_options.x_flag_objc_sjlj_exceptions =                        \
 157                                 flag_next_runtime && !TARGET_64BIT;     \
 158     if (flag_mkernel || flag_apple_kext)                                \
 159       {                                                                 \
 160         if (flag_use_cxa_atexit == 2)                                   \
 161           flag_use_cxa_atexit = 0;                                      \
 162         /* kexts should always be built without the coalesced sections  \
 163            because the kernel loader doesn't grok such sections.  */    \
 164         flag_weak = 0;                                                  \
 165         /* No RTTI in kexts.  */                                        \
 166         flag_rtti = 0;                                                  \
 167       }                                                                 \
 168   } while (0)
 169
 170 /* Machine dependent cpp options.  Don't add more options here, add
 171    them to darwin_cpp_builtins in darwin-c.c.  */
 172
 173 #undef  CPP_SPEC
 174 #define CPP_SPEC "%{static:%{!dynamic:-D__STATIC__}}%{!static:-D__DYNAMIC__}" \
 175         " %{pthread:-D_REENTRANT}"
 176
 177 /* This is mostly a clone of the standard LINK_COMMAND_SPEC, plus
 178    precomp, libtool, and fat build additions.
 179
 180    In general, random Darwin linker flags should go into LINK_SPEC
 181    instead of LINK_COMMAND_SPEC.  The command spec is better for
 182    specifying the handling of options understood by generic Unix
 183    linkers, and for positional arguments like libraries.  */
 184
 185 #define LINK_COMMAND_SPEC_A \
 186    "%{!fdump=*:%{!fsyntax-only:%{!c:%{!M:%{!MM:%{!E:%{!S:\
 187     %(linker)" \
 188     LINK_PLUGIN_SPEC \
 189     "%{flto*:%<fcompare-debug*} \
 190     %{flto*} \
 191     %l %X %{s} %{t} %{Z} %{u*} \
 192     %{e*} %{r} \
 193     %{o*}%{!o:-o a.out} \
 194     %{!nostdlib:%{!nostartfiles:%S}} \
 195     %{L*} %(link_libgcc) %o %{fprofile-arcs|fprofile-generate*|coverage:-lgcov} \
 196     %{fopenmp|ftree-parallelize-loops=*: \
 197       %{static|static-libgcc|static-libstdc++|static-libgfortran: libgomp.a%s; : -lgomp } } \
 198     %{!nostdlib:%{!nodefaultlibs:\
 199       %(link_ssp) %(link_gcc_c_sequence)\
 200     }}\
 201     %{!nostdlib:%{!nostartfiles:%E}} %{T*} %{F*} }}}}}}}"
 202
 203 #define DSYMUTIL "\ndsymutil"
 204
 205 #define DSYMUTIL_SPEC \
 206    "%{!fdump=*:%{!fsyntax-only:%{!c:%{!M:%{!MM:%{!E:%{!S:\
 207     %{v} \
 208     %{gdwarf-2:%{!gstabs*:%{!g0: -idsym}}}\
 209     %{.c|.cc|.C|.cpp|.cp|.c++|.cxx|.CPP|.m|.mm: \
 210     %{gdwarf-2:%{!gstabs*:%{!g0: -dsym}}}}}}}}}}}"
 211
 212 #define LINK_COMMAND_SPEC LINK_COMMAND_SPEC_A DSYMUTIL_SPEC
 213
 214 /* Tell collect2 to run dsymutil for us as necessary.  */
 215 #define COLLECT_RUN_DSYMUTIL 1
 216
 217 /* We only want one instance of %G, since libSystem (Darwin's -lc) does not depend
 218    on libgcc.  */
 219 #undef  LINK_GCC_C_SEQUENCE_SPEC
 220 #define LINK_GCC_C_SEQUENCE_SPEC "%G %L"
 221
 222 #ifdef TARGET_SYSTEM_ROOT
 223 #define LINK_SYSROOT_SPEC \
 224   "%{isysroot*:-syslibroot %*;:-syslibroot " TARGET_SYSTEM_ROOT "}"
 225 #else
 226 #define LINK_SYSROOT_SPEC "%{isysroot*:-syslibroot %*}"
 227 #endif
 228
 229 /* Please keep the random linker options in alphabetical order (modulo
 230    'Z' and 'no' prefixes). Note that options taking arguments may appear
 231    multiple times on a command line with different arguments each time,
 232    so put a * after their names so all of them get passed.  */
 233 #define LINK_SPEC  \
 234   "%{static}%{!static:-dynamic} \
 235    %:remove-outfile(-ldl) \
 236    %:remove-outfile(-lm) \
 237    %:remove-outfile(-lpthread) \
 238    %{fgnu-runtime: %{static|static-libgcc: \
 239                      %:replace-outfile(-lobjc libobjc-gnu.a%s); \
 240                     :%:replace-outfile(-lobjc -lobjc-gnu ) } }\
 241    %{static|static-libgcc|static-libgfortran:%:replace-outfile(-lgfortran libgfortran.a%s)}\
 242    %{static|static-libgcc|static-libstdc++|static-libgfortran:%:replace-outfile(-lgomp libgomp.a%s)}\
 243    %{static|static-libgcc|static-libstdc++:%:replace-outfile(-lstdc++ libstdc++.a%s)}\
 244    %{!Zdynamiclib: \
 245      %{Zforce_cpusubtype_ALL:-arch %(darwin_arch) -force_cpusubtype_ALL} \
 246      %{!Zforce_cpusubtype_ALL:-arch %(darwin_subarch)} \
 247      %{Zbundle:-bundle} \
 248      %{Zbundle_loader*:-bundle_loader %*} \
 249      %{client_name*} \
 250      %{compatibility_version*:%e-compatibility_version only allowed with -dynamiclib\
 251 } \
 252      %{current_version*:%e-current_version only allowed with -dynamiclib} \
 253      %{Zforce_flat_namespace:-force_flat_namespace} \
 254      %{Zinstall_name*:%e-install_name only allowed with -dynamiclib} \
 255      %{keep_private_externs} \
 256      %{private_bundle} \
 257     } \
 258    %{Zdynamiclib: -dylib \
 259      %{Zbundle:%e-bundle not allowed with -dynamiclib} \
 260      %{Zbundle_loader*:%e-bundle_loader not allowed with -dynamiclib} \
 261      %{client_name*:%e-client_name not allowed with -dynamiclib} \
 262      %{compatibility_version*:-dylib_compatibility_version %*} \
 263      %{current_version*:-dylib_current_version %*} \
 264      %{Zforce_cpusubtype_ALL:-arch %(darwin_arch)} \
 265      %{!Zforce_cpusubtype_ALL: -arch %(darwin_subarch)} \
 266      %{Zforce_flat_namespace:%e-force_flat_namespace not allowed with -dynamiclib} \
 267      %{Zinstall_name*:-dylib_install_name %*} \
 268      %{keep_private_externs:%e-keep_private_externs not allowed with -dynamiclib} \
 269      %{private_bundle:%e-private_bundle not allowed with -dynamiclib} \
 270     } \
 271    %{Zall_load:-all_load} \
 272    %{Zallowable_client*:-allowable_client %*} \
 273    %{Zbind_at_load:-bind_at_load} \
 274    %{Zarch_errors_fatal:-arch_errors_fatal} \
 275    %{Zdead_strip:-dead_strip} \
 276    %{Zno_dead_strip_inits_and_terms:-no_dead_strip_inits_and_terms} \
 277    %{Zdylib_file*:-dylib_file %*} \
 278    %{Zdynamic:-dynamic}\
 279    %{Zexported_symbols_list*:-exported_symbols_list %*} \
 280    %{Zflat_namespace:-flat_namespace} \
 281    %{headerpad_max_install_names} \
 282    %{Zimage_base*:-image_base %*} \
 283    %{Zinit*:-init %*} \
 284    %{!mmacosx-version-min=*:-macosx_version_min %(darwin_minversion)} \
 285    %{mmacosx-version-min=*:-macosx_version_min %*} \
 286    %{nomultidefs} \
 287    %{Zmulti_module:-multi_module} %{Zsingle_module:-single_module} \
 288    %{Zmultiply_defined*:-multiply_defined %*} \
 289    %{!Zmultiply_defined*:%{shared-libgcc: \
 290      %:version-compare(< 10.5 mmacosx-version-min= -multiply_defined) \
 291      %:version-compare(< 10.5 mmacosx-version-min= suppress)}} \
 292    %{Zmultiplydefinedunused*:-multiply_defined_unused %*} \
 293    %{fpie:-pie} \
 294    %{prebind} %{noprebind} %{nofixprebinding} %{prebind_all_twolevel_modules} \
 295    %{read_only_relocs} \
 296    %{sectcreate*} %{sectorder*} %{seg1addr*} %{segprot*} \
 297    %{Zsegaddr*:-segaddr %*} \
 298    %{Zsegs_read_only_addr*:-segs_read_only_addr %*} \
 299    %{Zsegs_read_write_addr*:-segs_read_write_addr %*} \
 300    %{Zseg_addr_table*: -seg_addr_table %*} \
 301    %{Zfn_seg_addr_table_filename*:-seg_addr_table_filename %*} \
 302    %{sub_library*} %{sub_umbrella*} \
 303    " LINK_SYSROOT_SPEC " \
 304    %{twolevel_namespace} %{twolevel_namespace_hints} \
 305    %{Zumbrella*: -umbrella %*} \
 306    %{undefined*} \
 307    %{Zunexported_symbols_list*:-unexported_symbols_list %*} \
 308    %{Zweak_reference_mismatches*:-weak_reference_mismatches %*} \
 309    %{!Zweak_reference_mismatches*:-weak_reference_mismatches non-weak} \
 310    %{X} \
 311    %{y*} \
 312    %{w} \
 313    %{pagezero_size*} %{segs_read_*} %{seglinkedit} %{noseglinkedit}  \
 314    %{sectalign*} %{sectobjectsymbols*} %{segcreate*} %{whyload} \
 315    %{whatsloaded} %{dylinker_install_name*} \
 316    %{dylinker} %{Mach} "
 317
 318
 319 /* Machine dependent libraries.  */
 320
 321 #define LIB_SPEC "%{!static:-lSystem}"
 322
 323 /* Support -mmacosx-version-min by supplying different (stub) libgcc_s.dylib
 324    libraries to link against, and by not linking against libgcc_s on
 325    earlier-than-10.3.9.
 326
 327    Note that by default, -lgcc_eh is not linked against!  This is
 328    because in a future version of Darwin the EH frame information may
 329    be in a new format, or the fallback routine might be changed; if
 330    you want to explicitly link against the static version of those
 331    routines, because you know you don't need to unwind through system
 332    libraries, you need to explicitly say -static-libgcc.
 333
 334    If it is linked against, it has to be before -lgcc, because it may
 335    need symbols from -lgcc.  */
 336 #undef REAL_LIBGCC_SPEC
 337 #define REAL_LIBGCC_SPEC                                                   \
 338    "%{static-libgcc|static: -lgcc_eh -lgcc;                                \
 339       shared-libgcc|fexceptions|fgnu-runtime:                              \
 340        %:version-compare(!> 10.5 mmacosx-version-min= -lgcc_s.10.4)        \
 341        %:version-compare(>< 10.5 10.6 mmacosx-version-min= -lgcc_s.10.5)   \
 342        %:version-compare(!> 10.5 mmacosx-version-min= -lgcc_ext.10.4)      \
 343        %:version-compare(>= 10.5 mmacosx-version-min= -lgcc_ext.10.5)      \
 344        -lgcc ;                                                             \
 345       :%:version-compare(>< 10.3.9 10.5 mmacosx-version-min= -lgcc_s.10.4) \
 346        %:version-compare(>< 10.5 10.6 mmacosx-version-min= -lgcc_s.10.5)   \
 347        %:version-compare(!> 10.5 mmacosx-version-min= -lgcc_ext.10.4)      \
 348        %:version-compare(>= 10.5 mmacosx-version-min= -lgcc_ext.10.5)      \
 349        -lgcc }"
 350
 351 /* We specify crt0.o as -lcrt0.o so that ld will search the library path.
 352
 353    crt3.o provides __cxa_atexit on systems that don't have it.  Since
 354    it's only used with C++, which requires passing -shared-libgcc, key
 355    off that to avoid unnecessarily adding a destructor to every
 356    powerpc program built.  */
 357
 358 #undef  STARTFILE_SPEC
 359 #define STARTFILE_SPEC                                                      \
 360   "%{Zdynamiclib: %(darwin_dylib1) }                                        \
 361    %{!Zdynamiclib:%{Zbundle:%{!static:-lbundle1.o}}                         \
 362      %{!Zbundle:%{pg:%{static:-lgcrt0.o}                                    \
 363                      %{!static:%{object:-lgcrt0.o}                          \
 364                                %{!object:%{preload:-lgcrt0.o}               \
 365                                  %{!preload:-lgcrt1.o %(darwin_crt2)}}}}    \
 366                 %{!pg:%{static:-lcrt0.o}                                    \
 367                       %{!static:%{object:-lcrt0.o}                          \
 368                                 %{!object:%{preload:-lcrt0.o}               \
 369                                   %{!preload: %(darwin_crt1)                \
 370                                               %(darwin_crt2)}}}}}}          \
 371   %{shared-libgcc:%:version-compare(< 10.5 mmacosx-version-min= crt3.o%s)}"
 372
 373 /* The native Darwin linker doesn't necessarily place files in the order
 374    that they're specified on the link line.  Thus, it is pointless
 375    to put anything in ENDFILE_SPEC.  */
 376 /* #define ENDFILE_SPEC "" */
 377
 378 #define DARWIN_EXTRA_SPECS                                              \
 379   { "darwin_crt1", DARWIN_CRT1_SPEC },                                  \
 380   { "darwin_dylib1", DARWIN_DYLIB1_SPEC },                              \
 381   { "darwin_minversion", DARWIN_MINVERSION_SPEC },
 382
 383 #define DARWIN_DYLIB1_SPEC                                              \
 384   "%:version-compare(!> 10.5 mmacosx-version-min= -ldylib1.o)           \
 385    %:version-compare(>= 10.5 mmacosx-version-min= -ldylib1.10.5.o)"
 386
 387 #define DARWIN_CRT1_SPEC                                                \
 388   "%:version-compare(!> 10.5 mmacosx-version-min= -lcrt1.o)             \
 389    %:version-compare(>= 10.5 mmacosx-version-min= -lcrt1.10.5.o)"
 390
 391 /* Default Darwin ASM_SPEC, very simple.  */
 392 #define ASM_SPEC "-arch %(darwin_arch) \
 393   %{Zforce_cpusubtype_ALL:-force_cpusubtype_ALL} \
 394   %{static}"
 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
 415 #define TARGET_WANT_DEBUG_PUB_SECTIONS true
 416
 417 /* When generating stabs debugging, use N_BINCL entries.  */
 418
 419 #define DBX_USE_BINCL
 420
 421 /* There is no limit to the length of stabs strings.  */
 422
 423 #define DBX_CONTIN_LENGTH 0
 424
 425 /* gdb needs a null N_SO at the end of each file for scattered loading.  */
 426
 427 #define DBX_OUTPUT_NULL_N_SO_AT_MAIN_SOURCE_FILE_END
 428
 429 /* GCC's definition of 'one_only' is the same as its definition of 'weak'.  */
 430 #define MAKE_DECL_ONE_ONLY(DECL) (DECL_WEAK (DECL) = 1)
 431
 432 /* Mach-O supports 'weak imports', and 'weak definitions' in coalesced
 433    sections.  machopic_select_section ensures that weak variables go in
 434    coalesced sections.  Weak aliases (or any other kind of aliases) are
 435    not supported.  Weak symbols that aren't visible outside the .s file
 436    are not supported.  */
 437 #define ASM_WEAKEN_DECL(FILE, DECL, NAME, ALIAS)                        \
 438   do {                                                                  \
 439     if (ALIAS)                                                          \
 440       {                                                                 \
 441         warning (0, "alias definitions not supported in Mach-O; ignored");      \
 442         break;                                                          \
 443       }                                                                 \
 444                                                                         \
 445     if (! DECL_EXTERNAL (DECL) && TREE_PUBLIC (DECL))                   \
 446       targetm.asm_out.globalize_label (FILE, NAME);                     \
 447     if (DECL_EXTERNAL (DECL))                                           \
 448       fputs ("\t.weak_reference ", FILE);                               \
 449     else if (lookup_attribute ("weak_import", DECL_ATTRIBUTES (DECL)))  \
 450       break;                                                            \
 451     else if (TREE_PUBLIC (DECL))                                        \
 452       fputs ("\t.weak_definition ", FILE);                              \
 453     else                                                                \
 454       break;                                                            \
 455     assemble_name (FILE, NAME);                                         \
 456     fputc ('\n', FILE);                                                 \
 457   } while (0)
 458
 459 /* Darwin has the pthread routines in libSystem, which every program
 460    links to, so there's no need for weak-ness for that.  */
 461 #define GTHREAD_USE_WEAK 0
 462
 463 /* The Darwin linker imposes two limitations on common symbols: they
 464    can't have hidden visibility, and they can't appear in dylibs.  As
 465    a consequence, we should never use common symbols to represent
 466    vague linkage. */
 467 #undef USE_COMMON_FOR_ONE_ONLY
 468 #define USE_COMMON_FOR_ONE_ONLY 0
 469
 470 /* The Darwin linker doesn't want coalesced symbols to appear in
 471    a static archive's table of contents. */
 472 #undef TARGET_WEAK_NOT_IN_ARCHIVE_TOC
 473 #define TARGET_WEAK_NOT_IN_ARCHIVE_TOC 1
 474
 475 /* On Darwin, we don't (at the time of writing) have linkonce sections
 476    with names, so it's safe to make the class data not comdat.  */
 477 #define TARGET_CXX_CLASS_DATA_ALWAYS_COMDAT hook_bool_void_false
 478
 479 /* For efficiency, on Darwin the RTTI information that is always
 480    emitted in the standard C++ library should not be COMDAT.  */
 481 #define TARGET_CXX_LIBRARY_RTTI_COMDAT hook_bool_void_false
 482
 483 /* We make exception information linkonce. */
 484 #undef TARGET_USES_WEAK_UNWIND_INFO
 485 #define TARGET_USES_WEAK_UNWIND_INFO 1
 486
 487 /* We need to use a nonlocal label for the start of an EH frame: the
 488    Darwin linker requires that a coalesced section start with a label.
 489    Unfortunately, it also requires that 'debug' sections don't contain
 490    labels.  */
 491 #undef FRAME_BEGIN_LABEL
 492 #define FRAME_BEGIN_LABEL (for_eh ? "EH_frame" : "Lframe")
 493
 494 /* Emit a label for the FDE corresponding to DECL.  EMPTY means
 495    emit a label for an empty FDE. */
 496 #define TARGET_ASM_EMIT_UNWIND_LABEL darwin_emit_unwind_label
 497
 498 /* Emit a label to separate the exception table.  */
 499 #define TARGET_ASM_EMIT_EXCEPT_TABLE_LABEL darwin_emit_except_table_label
 500
 501 /* Our profiling scheme doesn't LP labels and counter words.  */
 502
 503 #define NO_PROFILE_COUNTERS     1
 504
 505 #undef  INIT_SECTION_ASM_OP
 506 #define INIT_SECTION_ASM_OP
 507
 508 #undef  INVOKE__main
 509
 510 #define TARGET_ASM_CONSTRUCTOR  machopic_asm_out_constructor
 511 #define TARGET_ASM_DESTRUCTOR   machopic_asm_out_destructor
 512
 513 /* Always prefix with an underscore.  */
 514
 515 #define USER_LABEL_PREFIX "_"
 516
 517 /* A dummy symbol that will be replaced with the function base name.  */
 518 #define MACHOPIC_FUNCTION_BASE_NAME "<pic base>"
 519
 520 /* Don't output a .file directive.  That is only used by the assembler for
 521    error reporting.  */
 522 #undef  TARGET_ASM_FILE_START_FILE_DIRECTIVE
 523 #define TARGET_ASM_FILE_START_FILE_DIRECTIVE false
 524
 525 #undef  TARGET_ASM_FILE_END
 526 #define TARGET_ASM_FILE_END darwin_file_end
 527
 528 /* Because Mach-O relocations have a counter from 1 to 255 for the
 529    section number they apply to, it is necessary to output all
 530    normal sections before the LTO sections, to make sure that the
 531    sections that may have relocations always have a section number
 532    smaller than 255.  */
 533 #undef  TARGET_ASM_LTO_START
 534 #define TARGET_ASM_LTO_START darwin_asm_lto_start
 535 #undef  TARGET_ASM_LTO_END
 536 #define TARGET_ASM_LTO_END darwin_asm_lto_end
 537
 538 #define ASM_OUTPUT_SKIP(FILE,SIZE)  \
 539   fprintf (FILE, "\t.space "HOST_WIDE_INT_PRINT_UNSIGNED"\n", SIZE)
 540
 541 /* Give ObjC methods pretty symbol names.  */
 542
 543 #undef  OBJC_GEN_METHOD_LABEL
 544 #define OBJC_GEN_METHOD_LABEL(BUF,IS_INST,CLASS_NAME,CAT_NAME,SEL_NAME,NUM) \
 545   do { if (CAT_NAME)                                                    \
 546          sprintf (BUF, "%c[%s(%s) %s]", (IS_INST) ? '-' : '+',          \
 547                   (CLASS_NAME), (CAT_NAME), (SEL_NAME));                \
 548        else                                                             \
 549          sprintf (BUF, "%c[%s %s]", (IS_INST) ? '-' : '+',              \
 550                   (CLASS_NAME), (SEL_NAME));                            \
 551      } while (0)
 552
 553 #undef ASM_DECLARE_OBJECT_NAME
 554 #define ASM_DECLARE_OBJECT_NAME(FILE, NAME, DECL) \
 555         darwin_asm_declare_object_name ((FILE), (NAME), (DECL))
 556
 557 /* The RTTI data (e.g., __ti4name) is common and public (and static),
 558    but it does need to be referenced via indirect PIC data pointers.
 559    The machopic_define_symbol calls are telling the machopic subsystem
 560    that the name *is* defined in this module, so it doesn't need to
 561    make them indirect.  */
 562
 563 #define ASM_DECLARE_FUNCTION_NAME(FILE, NAME, DECL)                     \
 564   do {                                                                  \
 565     const char *xname = NAME;                                           \
 566     if (GET_CODE (XEXP (DECL_RTL (DECL), 0)) != SYMBOL_REF)             \
 567       xname = IDENTIFIER_POINTER (DECL_NAME (DECL));                    \
 568     if (! DECL_WEAK (DECL)                                              \
 569         && ((TREE_STATIC (DECL)                                         \
 570              && (!DECL_COMMON (DECL) || !TREE_PUBLIC (DECL)))           \
 571             || DECL_INITIAL (DECL)))                                    \
 572         machopic_define_symbol (DECL_RTL (DECL));                       \
 573     if ((TREE_STATIC (DECL)                                             \
 574          && (!DECL_COMMON (DECL) || !TREE_PUBLIC (DECL)))               \
 575         || DECL_INITIAL (DECL))                                         \
 576       (* targetm.encode_section_info) (DECL, DECL_RTL (DECL), false);   \
 577     ASM_OUTPUT_FUNCTION_LABEL (FILE, xname, DECL);                      \
 578   } while (0)
 579
 580 #undef TARGET_ASM_DECLARE_CONSTANT_NAME
 581 #define TARGET_ASM_DECLARE_CONSTANT_NAME darwin_asm_declare_constant_name
 582
 583 /* Wrap new method names in quotes so the assembler doesn't gag.
 584    Make Objective-C internal symbols local and in doing this, we need
 585    to accommodate the name mangling done by c++ on file scope locals.  */
 586
 587 int darwin_label_is_anonymous_local_objc_name (const char *name);
 588
 589 #undef  ASM_OUTPUT_LABELREF
 590 #define ASM_OUTPUT_LABELREF(FILE,NAME)                                       \
 591   do {                                                                       \
 592        const char *xname = (NAME);                                           \
 593        if (! strcmp (xname, MACHOPIC_FUNCTION_BASE_NAME))                    \
 594          machopic_output_function_base_name(FILE);                           \
 595        else if (xname[0] == '&' || xname[0] == '*')                          \
 596          {                                                                   \
 597            int len = strlen (xname);                                         \
 598            if (len > 6 && !strcmp ("$stub", xname + len - 5))                \
 599              machopic_validate_stub_or_non_lazy_ptr (xname);                 \
 600            else if (len > 7 && !strcmp ("$stub\"", xname + len - 6))         \
 601              machopic_validate_stub_or_non_lazy_ptr (xname);                 \
 602            else if (len > 14 && !strcmp ("$non_lazy_ptr", xname + len - 13)) \
 603              machopic_validate_stub_or_non_lazy_ptr (xname);                 \
 604            else if (len > 15 && !strcmp ("$non_lazy_ptr\"", xname + len - 14)) \
 605              machopic_validate_stub_or_non_lazy_ptr (xname);                 \
 606            if (xname[1] != '"' && name_needs_quotes (&xname[1]))             \
 607              fprintf (FILE, "\"%s\"", &xname[1]);                            \
 608            else                                                              \
 609              fputs (&xname[1], FILE);                                        \
 610          }                                                                   \
 611        else if (xname[0] == '+' || xname[0] == '-')                          \
 612          fprintf (FILE, "\"%s\"", xname);                                    \
 613        else if (darwin_label_is_anonymous_local_objc_name (xname))           \
 614          fprintf (FILE, "L%s", xname);                                       \
 615        else if (!strncmp (xname, ".objc_class_name_", 17))                   \
 616          fprintf (FILE, "%s", xname);                                        \
 617        else if (xname[0] != '"' && name_needs_quotes (xname))                \
 618          fprintf (FILE, "\"%s\"", xname);                                    \
 619        else                                                                  \
 620          asm_fprintf (FILE, "%U%s", xname);                                  \
 621   } while (0)
 622
 623 /* Output before executable code.  */
 624 #undef TEXT_SECTION_ASM_OP
 625 #define TEXT_SECTION_ASM_OP "\t.text"
 626
 627 /* Output before writable data.  */
 628
 629 #undef DATA_SECTION_ASM_OP
 630 #define DATA_SECTION_ASM_OP "\t.data"
 631
 632 #undef  ALIGN_ASM_OP
 633 #define ALIGN_ASM_OP            ".align"
 634
 635 #undef  ASM_OUTPUT_ALIGN
 636 #define ASM_OUTPUT_ALIGN(FILE,LOG)      \
 637   if ((LOG) != 0)                       \
 638     fprintf (FILE, "\t%s\t%d\n", ALIGN_ASM_OP, (LOG))
 639
 640 /* The maximum alignment which the object file format can support in
 641    bits.  For Mach-O, this is 2^15 bytes.  */
 642
 643 #undef  MAX_OFILE_ALIGNMENT
 644 #define MAX_OFILE_ALIGNMENT (0x8000 * 8)
 645
 646 #define L2_MAX_OFILE_ALIGNMENT 15
 647
 648 /*  These are the three variants that emit referenced blank space.  */
 649 #define ASM_OUTPUT_ALIGNED_BSS(FILE, DECL, NAME, SIZE, ALIGN)           \
 650         darwin_output_aligned_bss ((FILE), (DECL), (NAME), (SIZE), (ALIGN))
 651
 652 #undef  ASM_OUTPUT_ALIGNED_DECL_LOCAL
 653 #define ASM_OUTPUT_ALIGNED_DECL_LOCAL(FILE, DECL, NAME, SIZE, ALIGN)    \
 654         darwin_asm_output_aligned_decl_local                            \
 655                                   ((FILE), (DECL), (NAME), (SIZE), (ALIGN))
 656
 657 #undef  ASM_OUTPUT_ALIGNED_DECL_COMMON
 658 #define ASM_OUTPUT_ALIGNED_DECL_COMMON(FILE, DECL, NAME, SIZE, ALIGN)   \
 659         darwin_asm_output_aligned_decl_common                           \
 660                                    ((FILE), (DECL), (NAME), (SIZE), (ALIGN))
 661
 662 /* The generic version, archs should over-ride where required.  */
 663 #define MACHOPIC_NL_SYMBOL_PTR_SECTION ".non_lazy_symbol_pointer"
 664
 665 /* Declare the section variables.  */
 666 #ifndef USED_FOR_TARGET
 667 enum darwin_section_enum {
 668 #define DEF_SECTION(NAME, FLAGS, DIRECTIVE, OBJC) NAME,
 669 #include "darwin-sections.def"
 670 #undef DEF_SECTION
 671   NUM_DARWIN_SECTIONS
 672 };
 673 extern GTY(()) section * darwin_sections[NUM_DARWIN_SECTIONS];
 674 #endif
 675
 676 #undef  TARGET_ASM_SELECT_SECTION
 677 #define TARGET_ASM_SELECT_SECTION machopic_select_section
 678
 679 #undef  TARGET_ASM_FUNCTION_SECTION
 680 #define TARGET_ASM_FUNCTION_SECTION darwin_function_section
 681
 682 #undef  TARGET_ASM_FUNCTION_SWITCHED_TEXT_SECTIONS
 683 #define TARGET_ASM_FUNCTION_SWITCHED_TEXT_SECTIONS \
 684         darwin_function_switched_text_sections
 685
 686 #undef  TARGET_ASM_SELECT_RTX_SECTION
 687 #define TARGET_ASM_SELECT_RTX_SECTION machopic_select_rtx_section
 688 #undef  TARGET_ASM_UNIQUE_SECTION
 689 #define TARGET_ASM_UNIQUE_SECTION darwin_unique_section
 690 #undef  TARGET_ASM_FUNCTION_RODATA_SECTION
 691 #define TARGET_ASM_FUNCTION_RODATA_SECTION default_no_function_rodata_section
 692 #undef  TARGET_ASM_RELOC_RW_MASK
 693 #define TARGET_ASM_RELOC_RW_MASK machopic_reloc_rw_mask
 694
 695
 696 #define ASM_DECLARE_UNRESOLVED_REFERENCE(FILE,NAME)                     \
 697     do {                                                                \
 698          if (FILE) {                                                    \
 699            if (MACHOPIC_INDIRECT)                                       \
 700              fprintf (FILE, "\t.lazy_reference ");                      \
 701            else                                                         \
 702              fprintf (FILE, "\t.reference ");                           \
 703            assemble_name (FILE, NAME);                                  \
 704            fprintf (FILE, "\n");                                        \
 705          }                                                              \
 706        } while (0)
 707
 708 #define ASM_DECLARE_CLASS_REFERENCE(FILE,NAME)                          \
 709     do {                                                                \
 710          if (FILE) {                                                    \
 711            fprintf (FILE, "\t");                                        \
 712            assemble_name (FILE, NAME);                                  \
 713            fprintf (FILE, "=0\n");                                      \
 714            (*targetm.asm_out.globalize_label) (FILE, NAME);             \
 715          }                                                              \
 716        } while (0)
 717
 718 /* Globalizing directive for a label.  */
 719 #define GLOBAL_ASM_OP "\t.globl "
 720 #define TARGET_ASM_GLOBALIZE_LABEL darwin_globalize_label
 721
 722 /* Emit an assembler directive to set visibility for a symbol.  Used
 723    to support visibility attribute and Darwin's private extern
 724    feature.  */
 725 #undef TARGET_ASM_ASSEMBLE_VISIBILITY
 726 #define TARGET_ASM_ASSEMBLE_VISIBILITY darwin_assemble_visibility
 727
 728 /* Extra attributes for Darwin.  */
 729 #define SUBTARGET_ATTRIBUTE_TABLE                                            \
 730   /* { name, min_len, max_len, decl_req, type_req, fn_type_req, handler,     \
 731        affects_type_identity } */                                                    \
 732   { "apple_kext_compatibility", 0, 0, false, true, false,                    \
 733     darwin_handle_kext_attribute, false },                                   \
 734   { "weak_import", 0, 0, true, false, false,                                 \
 735     darwin_handle_weak_import_attribute, false }
 736
 737 #undef ASM_GENERATE_INTERNAL_LABEL
 738 #define ASM_GENERATE_INTERNAL_LABEL(LABEL,PREFIX,NUM)   \
 739   sprintf (LABEL, "*%s%ld", PREFIX, (long)(NUM))
 740
 741 #undef TARGET_ASM_MARK_DECL_PRESERVED
 742 #define TARGET_ASM_MARK_DECL_PRESERVED darwin_mark_decl_preserved
 743
 744 /* Set on a symbol with SYMBOL_FLAG_FUNCTION or
 745    MACHO_SYMBOL_FLAG_VARIABLE to indicate that the function or
 746    variable has been defined in this translation unit.
 747    When porting Mach-O to new architectures you need to make
 748    sure these aren't clobbered by the backend.  */
 749
 750 #define MACHO_SYMBOL_FLAG_VARIABLE (SYMBOL_FLAG_MACH_DEP)
 751 #define MACHO_SYMBOL_FLAG_DEFINED ((SYMBOL_FLAG_MACH_DEP) << 1)
 752
 753 /* Set on a symbol to indicate when fix-and-continue style code
 754    generation is being used and the symbol refers to a static symbol
 755    that should be rebound from new instances of a translation unit to
 756    the original instance of the data.  */
 757
 758 #define MACHO_SYMBOL_STATIC ((SYMBOL_FLAG_MACH_DEP) << 2)
 759
 760 /* Symbolic names for various things we might know about a symbol.  */
 761
 762 enum machopic_addr_class {
 763   MACHOPIC_UNDEFINED,
 764   MACHOPIC_DEFINED_DATA,
 765   MACHOPIC_UNDEFINED_DATA,
 766   MACHOPIC_DEFINED_FUNCTION,
 767   MACHOPIC_UNDEFINED_FUNCTION
 768 };
 769
 770 /* Macros defining the various PIC cases.  */
 771
 772 #undef  MACHO_DYNAMIC_NO_PIC_P
 773 #define MACHO_DYNAMIC_NO_PIC_P  (TARGET_MACHO_DYNAMIC_NO_PIC)
 774 #undef  MACHOPIC_INDIRECT
 775 #define MACHOPIC_INDIRECT       (flag_pic || MACHO_DYNAMIC_NO_PIC_P)
 776 #define MACHOPIC_JUST_INDIRECT  (MACHO_DYNAMIC_NO_PIC_P)
 777 #undef  MACHOPIC_PURE
 778 #define MACHOPIC_PURE           (flag_pic && ! MACHO_DYNAMIC_NO_PIC_P)
 779
 780 #undef TARGET_ENCODE_SECTION_INFO
 781 #define TARGET_ENCODE_SECTION_INFO  darwin_encode_section_info
 782 #undef TARGET_STRIP_NAME_ENCODING
 783 #define TARGET_STRIP_NAME_ENCODING  default_strip_name_encoding
 784
 785 #define GEN_BINDER_NAME_FOR_STUB(BUF,STUB,STUB_LENGTH)          \
 786   do {                                                          \
 787     const char *const stub_ = (STUB);                           \
 788     char *buffer_ = (BUF);                                      \
 789     strcpy (buffer_, stub_);                                    \
 790     if (stub_[0] == '"')                                        \
 791       {                                                         \
 792         strcpy (buffer_ + (STUB_LENGTH) - 1, "_binder\"");      \
 793       }                                                         \
 794     else                                                        \
 795       {                                                         \
 796         strcpy (buffer_ + (STUB_LENGTH), "_binder");            \
 797       }                                                         \
 798   } while (0)
 799
 800 #define GEN_SYMBOL_NAME_FOR_SYMBOL(BUF,SYMBOL,SYMBOL_LENGTH)    \
 801   do {                                                          \
 802     const char *const symbol_ = (SYMBOL);                       \
 803     char *buffer_ = (BUF);                                      \
 804     if (name_needs_quotes (symbol_) && symbol_[0] != '"')       \
 805       {                                                         \
 806           sprintf (buffer_, "\"%s\"", symbol_);                 \
 807       }                                                         \
 808     else                                                        \
 809       {                                                         \
 810         strcpy (buffer_, symbol_);                              \
 811       }                                                         \
 812   } while (0)
 813
 814 /* Given a symbol name string, create the lazy pointer version
 815    of the symbol name.  */
 816
 817 #define GEN_LAZY_PTR_NAME_FOR_SYMBOL(BUF,SYMBOL,SYMBOL_LENGTH)  \
 818   do {                                                          \
 819     const char *symbol_ = (SYMBOL);                             \
 820     char *buffer_ = (BUF);                                      \
 821     if (symbol_[0] == '"')                                      \
 822       {                                                         \
 823         strcpy (buffer_, "\"L");                                \
 824         strcpy (buffer_ + 2, symbol_ + 1);                      \
 825         strcpy (buffer_ + (SYMBOL_LENGTH), "$lazy_ptr\"");      \
 826       }                                                         \
 827     else if (name_needs_quotes (symbol_))                       \
 828       {                                                         \
 829         strcpy (buffer_, "\"L");                                \
 830         strcpy (buffer_ + 2, symbol_);                          \
 831         strcpy (buffer_ + (SYMBOL_LENGTH) + 2, "$lazy_ptr\"");  \
 832       }                                                         \
 833     else                                                        \
 834       {                                                         \
 835         strcpy (buffer_, "L");                                  \
 836         strcpy (buffer_ + 1, symbol_);                          \
 837         strcpy (buffer_ + (SYMBOL_LENGTH) + 1, "$lazy_ptr");    \
 838       }                                                         \
 839   } while (0)
 840
 841 #define EH_FRAME_SECTION_NAME   "__TEXT"
 842 #define EH_FRAME_SECTION_ATTR ",coalesced,no_toc+strip_static_syms+live_support"
 843
 844 /* Java runtime class list.  */
 845 #define JCR_SECTION_NAME "__DATA,jcr,regular,no_dead_strip"
 846
 847 #undef ASM_PREFERRED_EH_DATA_FORMAT
 848 #define ASM_PREFERRED_EH_DATA_FORMAT(CODE,GLOBAL)  \
 849   (((CODE) == 2 && (GLOBAL) == 1) \
 850    ? (DW_EH_PE_pcrel | DW_EH_PE_indirect | DW_EH_PE_sdata4) : \
 851      ((CODE) == 1 || (GLOBAL) == 0) ? DW_EH_PE_pcrel : DW_EH_PE_absptr)
 852
 853 #define ASM_OUTPUT_DWARF_DELTA(FILE,SIZE,LABEL1,LABEL2)  \
 854   darwin_asm_output_dwarf_delta (FILE, SIZE, LABEL1, LABEL2)
 855
 856 #define ASM_OUTPUT_DWARF_OFFSET(FILE,SIZE,LABEL,BASE)  \
 857   darwin_asm_output_dwarf_offset (FILE, SIZE, LABEL, BASE)
 858
 859 #define ASM_MAYBE_OUTPUT_ENCODED_ADDR_RTX(ASM_OUT_FILE, ENCODING, SIZE, ADDR, DONE)     \
 860       if (ENCODING == ASM_PREFERRED_EH_DATA_FORMAT (2, 1)) {                            \
 861         darwin_non_lazy_pcrel (ASM_OUT_FILE, ADDR);                                     \
 862         goto DONE;                                                                      \
 863       }
 864
 865 /* Experimentally, putting jump tables in text is faster on SPEC.
 866    Also this is needed for correctness for coalesced functions.  */
 867
 868 #ifndef JUMP_TABLES_IN_TEXT_SECTION
 869 #define JUMP_TABLES_IN_TEXT_SECTION 1
 870 #endif
 871
 872 #define TARGET_TERMINATE_DW2_EH_FRAME_INFO false
 873
 874 #define TARGET_ASM_INIT_SECTIONS darwin_init_sections
 875 #undef TARGET_ASM_NAMED_SECTION
 876 #define TARGET_ASM_NAMED_SECTION darwin_asm_named_section
 877
 878 #define DARWIN_REGISTER_TARGET_PRAGMAS()                        \
 879   do {                                                          \
 880     if (!flag_preprocess_only)                                  \
 881       cpp_register_pragma (parse_in, NULL, "mark",              \
 882                            darwin_pragma_ignore, false);        \
 883     c_register_pragma (0, "options", darwin_pragma_options);    \
 884     c_register_pragma (0, "segment", darwin_pragma_ignore);     \
 885     c_register_pragma (0, "unused", darwin_pragma_unused);      \
 886     c_register_pragma (0, "ms_struct", darwin_pragma_ms_struct); \
 887   } while (0)
 888
 889 #undef ASM_APP_ON
 890 #define ASM_APP_ON ""
 891 #undef ASM_APP_OFF
 892 #define ASM_APP_OFF ""
 893
 894 void darwin_register_frameworks (const char *, const char *, int);
 895 void darwin_register_objc_includes (const char *, const char *, int);
 896 #define TARGET_EXTRA_PRE_INCLUDES darwin_register_objc_includes
 897 #define TARGET_EXTRA_INCLUDES darwin_register_frameworks
 898
 899 void add_framework_path (char *);
 900 #define TARGET_OPTF add_framework_path
 901
 902 #define TARGET_POSIX_IO
 903
 904 /* All new versions of Darwin have C99 functions.  */
 905
 906 #define TARGET_C99_FUNCTIONS 1
 907
 908 #define WINT_TYPE "int"
 909
 910 /* Every program on darwin links against libSystem which contains the pthread
 911    routines, so there's no need to explicitly call out when doing threaded
 912    work.  */
 913
 914 #undef GOMP_SELF_SPECS
 915 #define GOMP_SELF_SPECS ""
 916
 917 /* Darwin disables section anchors by default.
 918    They should be enabled per arch where support exists in that arch.  */
 919 #define TARGET_ASM_OUTPUT_ANCHOR NULL
 920 #define DARWIN_SECTION_ANCHORS 0
 921
 922 #define HAVE_ENABLE_EXECUTE_STACK
 923
 924 /* For Apple KEXTs, we make the constructors return this to match gcc
 925    2.95.  */
 926 #define TARGET_CXX_CDTOR_RETURNS_THIS (darwin_kextabi_p)
 927 #define TARGET_KEXTABI flag_apple_kext
 928
 929 /* We have target-specific builtins.  */
 930 #define TARGET_FOLD_BUILTIN darwin_fold_builtin
 931
 932 #define TARGET_N_FORMAT_TYPES 1
 933 #define TARGET_FORMAT_TYPES darwin_additional_format_types
 934
 935 #ifndef USED_FOR_TARGET
 936 extern void darwin_driver_init (unsigned int *,struct cl_decoded_option **);
 937 #define GCC_DRIVER_HOST_INITIALIZATION \
 938   darwin_driver_init (&decoded_options_count, &decoded_options)
 939 #endif
 940
 941 /* The Apple assembler and linker do not support constructor priorities.  */
 942 #undef SUPPORTS_INIT_PRIORITY
 943 #define SUPPORTS_INIT_PRIORITY 0
 944
 945 #endif /* CONFIG_DARWIN_H */