gcc/config/darwin.h

   1 /* Target definitions for Darwin (Mac OS X) systems.
   2    Copyright (C) 1989-2018 Free Software Foundation, Inc.
   3    Contributed by Apple Computer Inc.
   4
   5 This file is part of GCC.
   6
   7 GCC is free software; you can redistribute it and/or modify
   8 it under the terms of the GNU General Public License as published by
   9 the Free Software Foundation; either version 3, or (at your option)
  10 any later version.
  11
  12 GCC is distributed in the hope that it will be useful,
  13 but WITHOUT ANY WARRANTY; without even the implied warranty of
  14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15 GNU General Public License for more details.
  16
  17 Under Section 7 of GPL version 3, you are granted additional
  18 permissions described in the GCC Runtime Library Exception, version
  19 3.1, as published by the Free Software Foundation.
  20
  21 You should have received a copy of the GNU General Public License and
  22 a copy of the GCC Runtime Library Exception along with this program;
  23 see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
  24 <http://www.gnu.org/licenses/>.  */
  25
  26 #ifndef CONFIG_DARWIN_H
  27 #define CONFIG_DARWIN_H
  28
  29 /* The definitions in this file are common to all processor types
  30    running Darwin, which is the kernel for Mac OS X.  Darwin is
  31    basically a BSD user layer laid over a Mach kernel, then evolved
  32    for many years (at NeXT) in parallel with other Unix systems.  So
  33    while the runtime is a somewhat idiosyncratic Mach-based thing,
  34    other definitions look like they would for a BSD variant.  */
  35
  36 /* Although NeXT ran on many different architectures, as of Jan 2001
  37    the only supported Darwin targets are PowerPC and x86.  */
  38
  39 /* One of Darwin's NeXT legacies is the Mach-O format, which is partly
  40    like a.out and partly like COFF, with additional features like
  41    multi-architecture binary support.  */
  42
  43 #define DARWIN_X86 0
  44 #define DARWIN_PPC 0
  45
  46 /* Suppress g++ attempt to link in the math library automatically. */
  47 #define MATH_LIBRARY ""
  48
  49 /* We have atexit.  */
  50
  51 #define HAVE_ATEXIT
  52
  53 /* Define an empty body for the function do_global_dtors() in libgcc2.c.  */
  54
  55 #define DO_GLOBAL_DTORS_BODY
  56
  57 /* The string value for __SIZE_TYPE__.  */
  58
  59 #ifndef SIZE_TYPE
  60 #define SIZE_TYPE "long unsigned int"
  61 #endif
  62
  63 /* Type used for ptrdiff_t, as a string used in a declaration.  */
  64
  65 #undef  PTRDIFF_TYPE
  66 #define PTRDIFF_TYPE "int"
  67
  68 /* wchar_t is int.  */
  69
  70 #undef  WCHAR_TYPE
  71 #define WCHAR_TYPE "int"
  72 #undef  WCHAR_TYPE_SIZE
  73 #define WCHAR_TYPE_SIZE 32
  74
  75 #define INT8_TYPE "signed char"
  76 #define INT16_TYPE "short int"
  77 #define INT32_TYPE "int"
  78 #define INT64_TYPE "long long int"
  79 #define UINT8_TYPE "unsigned char"
  80 #define UINT16_TYPE "short unsigned int"
  81 #define UINT32_TYPE "unsigned int"
  82 #define UINT64_TYPE "long long unsigned int"
  83
  84 #define INT_LEAST8_TYPE "signed char"
  85 #define INT_LEAST16_TYPE "short int"
  86 #define INT_LEAST32_TYPE "int"
  87 #define INT_LEAST64_TYPE "long long int"
  88 #define UINT_LEAST8_TYPE "unsigned char"
  89 #define UINT_LEAST16_TYPE "short unsigned int"
  90 #define UINT_LEAST32_TYPE "unsigned int"
  91 #define UINT_LEAST64_TYPE "long long unsigned int"
  92
  93 #define INT_FAST8_TYPE "signed char"
  94 #define INT_FAST16_TYPE "short int"
  95 #define INT_FAST32_TYPE "int"
  96 #define INT_FAST64_TYPE "long long int"
  97 #define UINT_FAST8_TYPE "unsigned char"
  98 #define UINT_FAST16_TYPE "short unsigned int"
  99 #define UINT_FAST32_TYPE "unsigned int"
 100 #define UINT_FAST64_TYPE "long long unsigned int"
 101
 102 #define INTPTR_TYPE "long int"
 103 #define UINTPTR_TYPE "long unsigned int"
 104
 105 #define SIG_ATOMIC_TYPE "int"
 106
 107 /* Default to using the NeXT-style runtime, since that's what is
 108    pre-installed on Darwin systems.  */
 109
 110 #define NEXT_OBJC_RUNTIME 1
 111
 112 /* Don't default to pcc-struct-return, because gcc is the only compiler, and
 113    we want to retain compatibility with older gcc versions.  */
 114
 115 #undef  DEFAULT_PCC_STRUCT_RETURN
 116 #define DEFAULT_PCC_STRUCT_RETURN 0
 117
 118 /* True if pragma ms_struct is in effect.  */
 119 extern GTY(()) int darwin_ms_struct;
 120
 121 #define DRIVER_SELF_SPECS                                       \
 122   "%{gfull:-g -fno-eliminate-unused-debug-symbols} %<gfull",    \
 123   "%{gused:-g -feliminate-unused-debug-symbols} %<gused",       \
 124   "%{fapple-kext|mkernel:-static}",                             \
 125   "%{shared:-Zdynamiclib} %<shared",                            \
 126   "%{gsplit-dwarf:%ngsplit-dwarf is not supported on this platform } \
 127      %<gsplit-dwarf"
 128
 129 #define DARWIN_CC1_SPEC                                                 \
 130   "%{findirect-virtual-calls: -fapple-kext} %<findirect-virtual-calls " \
 131   "%{fterminated-vtables: -fapple-kext} %<fterminated-vtables "         \
 132   "%<filelist* %<framework*"
 133
 134 #define SUBSUBTARGET_OVERRIDE_OPTIONS                                   \
 135   do {                                                                  \
 136     darwin_override_options ();                                         \
 137   } while (0)
 138
 139 #define SUBTARGET_C_COMMON_OVERRIDE_OPTIONS do {                        \
 140     if (flag_mkernel || flag_apple_kext)                                \
 141       {                                                                 \
 142         if (flag_use_cxa_atexit == 2)                                   \
 143           flag_use_cxa_atexit = 0;                                      \
 144         /* kexts should always be built without the coalesced sections  \
 145            because the kernel loader doesn't grok such sections.  */    \
 146         flag_weak = 0;                                                  \
 147         /* No RTTI in kexts.  */                                        \
 148         flag_rtti = 0;                                                  \
 149       }                                                                 \
 150   } while (0)
 151
 152 /* Machine dependent cpp options.  Don't add more options here, add
 153    them to darwin_cpp_builtins in darwin-c.c.  */
 154
 155 #undef  CPP_SPEC
 156 #define CPP_SPEC "%{static:%{!dynamic:-D__STATIC__}}%{!static:-D__DYNAMIC__}" \
 157         " %{pthread:-D_REENTRANT}"
 158
 159 /* This is mostly a clone of the standard LINK_COMMAND_SPEC, plus
 160    precomp, libtool, and fat build additions.
 161
 162    In general, random Darwin linker flags should go into LINK_SPEC
 163    instead of LINK_COMMAND_SPEC.  The command spec is better for
 164    specifying the handling of options understood by generic Unix
 165    linkers, and for positional arguments like libraries.  */
 166
 167 #if LD64_HAS_EXPORT_DYNAMIC
 168 #define DARWIN_EXPORT_DYNAMIC " %{rdynamic:-export_dynamic}"
 169 #else
 170 #define DARWIN_EXPORT_DYNAMIC " %{rdynamic: %nrdynamic is not supported}"
 171 #endif
 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} %{fno-lto} %{flto=*} \
 179     %l " LINK_COMPRESS_DEBUG_SPEC \
 180    "%X %{s} %{t} %{Z} %{u*} \
 181     %{e*} %{r} \
 182     %{o*}%{!o:-o a.out} \
 183     %{!nostdlib:%{!r:%{!nostartfiles:%S}}} \
 184     %{L*} %(link_libgcc) %o %{fprofile-arcs|fprofile-generate*|coverage:-lgcov} \
 185     %{fopenacc|fopenmp|%:gt(%{ftree-parallelize-loops=*:%*} 1): \
 186       %{static|static-libgcc|static-libstdc++|static-libgfortran: libgomp.a%s; : -lgomp } } \
 187     %{fgnu-tm: \
 188       %{static|static-libgcc|static-libstdc++|static-libgfortran: libitm.a%s; : -litm } } \
 189     %{!nostdlib:%{!r:%{!nodefaultlibs:\
 190       %{%:sanitize(address): -lasan } \
 191       %{%:sanitize(undefined): -lubsan } \
 192       %(link_ssp) \
 193       " DARWIN_EXPORT_DYNAMIC " %<rdynamic \
 194       %(link_gcc_c_sequence) \
 195     }}}\
 196     %{!nostdlib:%{!r:%{!nostartfiles:%E}}} %{T*} %{F*} }}}}}}}"
 197
 198 #define DSYMUTIL "\ndsymutil"
 199
 200 #define DSYMUTIL_SPEC \
 201    "%{!fdump=*:%{!fsyntax-only:%{!c:%{!M:%{!MM:%{!E:%{!S:\
 202     %{v} \
 203     %{gdwarf-2:%{!gstabs*:%{%:debug-level-gt(0): -idsym}}}\
 204     %{.c|.cc|.C|.cpp|.cp|.c++|.cxx|.CPP|.m|.mm: \
 205     %{gdwarf-2:%{!gstabs*:%{%:debug-level-gt(0): -dsym}}}}}}}}}}}"
 206
 207 #define LINK_COMMAND_SPEC LINK_COMMAND_SPEC_A DSYMUTIL_SPEC
 208
 209 /* Tell collect2 to run dsymutil for us as necessary.  */
 210 #define COLLECT_RUN_DSYMUTIL 1
 211
 212 /* We only want one instance of %G, since libSystem (Darwin's -lc) does not depend
 213    on libgcc.  */
 214 #undef  LINK_GCC_C_SEQUENCE_SPEC
 215 #define LINK_GCC_C_SEQUENCE_SPEC "%G %{!nolibc:%L}"
 216
 217 /* ld64 supports a sysroot, it just has a different name and there's no easy
 218    way to check for it at config time.  */
 219 #undef HAVE_LD_SYSROOT
 220 #define HAVE_LD_SYSROOT 1
 221 /* It seems the only (working) way to get a space after %R is to append a
 222    dangling '/'.  */
 223 #define SYSROOT_SPEC "%{!isysroot*:-syslibroot %R/ }"
 224
 225 /* Do the same as clang, for now, and insert the sysroot for ld when an
 226    isysroot is specified.  */
 227 #define LINK_SYSROOT_SPEC "%{isysroot*:-syslibroot %*}"
 228
 229 /* Suppress the addition of extra prefix paths when a sysroot is in use.  */
 230 #define STANDARD_STARTFILE_PREFIX_1 ""
 231 #define STANDARD_STARTFILE_PREFIX_2 ""
 232
 233 #define DARWIN_PIE_SPEC "%{fpie|pie|fPIE:}"
 234
 235 /* Please keep the random linker options in alphabetical order (modulo
 236    'Z' and 'no' prefixes). Note that options taking arguments may appear
 237    multiple times on a command line with different arguments each time,
 238    so put a * after their names so all of them get passed.  */
 239 #define LINK_SPEC  \
 240   "%{static}%{!static:-dynamic} \
 241    %:remove-outfile(-ldl) \
 242    %:remove-outfile(-lm) \
 243    %:remove-outfile(-lpthread) \
 244    %{fgnu-runtime: %{static|static-libgcc: \
 245                      %:replace-outfile(-lobjc libobjc-gnu.a%s); \
 246                     :%:replace-outfile(-lobjc -lobjc-gnu ) } }\
 247    %{static|static-libgcc|static-libgfortran:%:replace-outfile(-lgfortran libgfortran.a%s)}\
 248    %{static|static-libgcc|static-libstdc++|static-libgfortran:%:replace-outfile(-lgomp libgomp.a%s)}\
 249    %{static|static-libgcc|static-libstdc++:%:replace-outfile(-lstdc++ libstdc++.a%s)}\
 250    %{!Zdynamiclib: \
 251      %{Zforce_cpusubtype_ALL:-arch %(darwin_arch) -force_cpusubtype_ALL} \
 252      %{!Zforce_cpusubtype_ALL:-arch %(darwin_subarch)} \
 253      %{Zbundle:-bundle} \
 254      %{Zbundle_loader*:-bundle_loader %*} \
 255      %{client_name*} \
 256      %{compatibility_version*:%e-compatibility_version only allowed with -dynamiclib\
 257 } \
 258      %{current_version*:%e-current_version only allowed with -dynamiclib} \
 259      %{Zforce_flat_namespace:-force_flat_namespace} \
 260      %{Zinstall_name*:%e-install_name only allowed with -dynamiclib} \
 261      %{keep_private_externs} \
 262      %{private_bundle} \
 263     } \
 264    %{Zdynamiclib: -dylib \
 265      %{Zbundle:%e-bundle not allowed with -dynamiclib} \
 266      %{Zbundle_loader*:%e-bundle_loader not allowed with -dynamiclib} \
 267      %{client_name*:%e-client_name not allowed with -dynamiclib} \
 268      %{compatibility_version*:-dylib_compatibility_version %*} \
 269      %{current_version*:-dylib_current_version %*} \
 270      %{Zforce_cpusubtype_ALL:-arch %(darwin_arch)} \
 271      %{!Zforce_cpusubtype_ALL: -arch %(darwin_subarch)} \
 272      %{Zforce_flat_namespace:%e-force_flat_namespace not allowed with -dynamiclib} \
 273      %{Zinstall_name*:-dylib_install_name %*} \
 274      %{keep_private_externs:%e-keep_private_externs not allowed with -dynamiclib} \
 275      %{private_bundle:%e-private_bundle not allowed with -dynamiclib} \
 276     } \
 277    %{Zall_load:-all_load} \
 278    %{Zallowable_client*:-allowable_client %*} \
 279    %{Zbind_at_load:-bind_at_load} \
 280    %{Zarch_errors_fatal:-arch_errors_fatal} \
 281    %{Zdead_strip:-dead_strip} \
 282    %{Zno_dead_strip_inits_and_terms:-no_dead_strip_inits_and_terms} \
 283    %{Zdylib_file*:-dylib_file %*} \
 284    %{Zdynamic:-dynamic}\
 285    %{Zexported_symbols_list*:-exported_symbols_list %*} \
 286    %{Zflat_namespace:-flat_namespace} \
 287    %{headerpad_max_install_names} \
 288    %{Zimage_base*:-image_base %*} \
 289    %{Zinit*:-init %*} \
 290    %{mmacosx-version-min=*:-macosx_version_min %*} \
 291    %{nomultidefs} \
 292    %{Zmulti_module:-multi_module} %{Zsingle_module:-single_module} \
 293    %{Zmultiply_defined*:-multiply_defined %*} \
 294    %{!Zmultiply_defined*:%{shared-libgcc: \
 295      %:version-compare(< 10.5 mmacosx-version-min= -multiply_defined) \
 296      %:version-compare(< 10.5 mmacosx-version-min= suppress)}} \
 297    %{Zmultiplydefinedunused*:-multiply_defined_unused %*} \
 298    " DARWIN_PIE_SPEC " \
 299    %{prebind} %{noprebind} %{nofixprebinding} %{prebind_all_twolevel_modules} \
 300    %{read_only_relocs} \
 301    %{sectcreate*} %{sectorder*} %{seg1addr*} %{segprot*} \
 302    %{Zsegaddr*:-segaddr %*} \
 303    %{Zsegs_read_only_addr*:-segs_read_only_addr %*} \
 304    %{Zsegs_read_write_addr*:-segs_read_write_addr %*} \
 305    %{Zseg_addr_table*: -seg_addr_table %*} \
 306    %{Zfn_seg_addr_table_filename*:-seg_addr_table_filename %*} \
 307    %{sub_library*} %{sub_umbrella*} \
 308    " LINK_SYSROOT_SPEC " \
 309    %{twolevel_namespace} %{twolevel_namespace_hints} \
 310    %{Zumbrella*: -umbrella %*} \
 311    %{undefined*} \
 312    %{Zunexported_symbols_list*:-unexported_symbols_list %*} \
 313    %{Zweak_reference_mismatches*:-weak_reference_mismatches %*} \
 314    %{!Zweak_reference_mismatches*:-weak_reference_mismatches non-weak} \
 315    %{X} \
 316    %{y*} \
 317    %{w} \
 318    %{pagezero_size*} %{segs_read_*} %{seglinkedit} %{noseglinkedit}  \
 319    %{sectalign*} %{sectobjectsymbols*} %{segcreate*} %{whyload} \
 320    %{whatsloaded} %{dylinker_install_name*} \
 321    %{dylinker} %{Mach} "
 322
 323
 324 /* Machine dependent libraries.  */
 325
 326 #define LIB_SPEC "%{!static:-lSystem}"
 327
 328 /* Support -mmacosx-version-min by supplying different (stub) libgcc_s.dylib
 329    libraries to link against, and by not linking against libgcc_s on
 330    earlier-than-10.3.9.
 331
 332    Note that by default, -lgcc_eh is not linked against!  This is
 333    because in a future version of Darwin the EH frame information may
 334    be in a new format, or the fallback routine might be changed; if
 335    you want to explicitly link against the static version of those
 336    routines, because you know you don't need to unwind through system
 337    libraries, you need to explicitly say -static-libgcc.
 338
 339    If it is linked against, it has to be before -lgcc, because it may
 340    need symbols from -lgcc.  */
 341 #undef REAL_LIBGCC_SPEC
 342 #define REAL_LIBGCC_SPEC                                                   \
 343    "%{static-libgcc|static: -lgcc_eh -lgcc;                                \
 344       shared-libgcc|fexceptions|fgnu-runtime:                              \
 345        %:version-compare(!> 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       :%:version-compare(>< 10.3.9 10.5 mmacosx-version-min= -lgcc_s.10.4) \
 351        %:version-compare(>< 10.5 10.6 mmacosx-version-min= -lgcc_s.10.5)   \
 352        %:version-compare(!> 10.5 mmacosx-version-min= -lgcc_ext.10.4)      \
 353        %:version-compare(>= 10.5 mmacosx-version-min= -lgcc_ext.10.5)      \
 354        -lgcc }"
 355
 356 /* We specify crt0.o as -lcrt0.o so that ld will search the library path.
 357
 358    crt3.o provides __cxa_atexit on systems that don't have it.  Since
 359    it's only used with C++, which requires passing -shared-libgcc, key
 360    off that to avoid unnecessarily adding a destructor to every
 361    powerpc program built.  */
 362
 363 #undef  STARTFILE_SPEC
 364 #define STARTFILE_SPEC                                                      \
 365   "%{Zdynamiclib: %(darwin_dylib1) %{fgnu-tm: -lcrttms.o}}                  \
 366    %{!Zdynamiclib:%{Zbundle:%{!static:                                      \
 367         %:version-compare(< 10.6 mmacosx-version-min= -lbundle1.o)          \
 368         %{fgnu-tm: -lcrttms.o}}}                                            \
 369      %{!Zbundle:%{pg:%{static:-lgcrt0.o}                                    \
 370                      %{!static:%{object:-lgcrt0.o}                          \
 371                                %{!object:%{preload:-lgcrt0.o}               \
 372                                  %{!preload:-lgcrt1.o                       \
 373                                  %:version-compare(>= 10.8 mmacosx-version-min= -no_new_main) \
 374                                  %(darwin_crt2)}}}}    \
 375                 %{!pg:%{static:-lcrt0.o}                                    \
 376                       %{!static:%{object:-lcrt0.o}                          \
 377                                 %{!object:%{preload:-lcrt0.o}               \
 378                                   %{!preload: %(darwin_crt1)                \
 379                                               %(darwin_crt2)}}}}}}          \
 380   %{shared-libgcc:%:version-compare(< 10.5 mmacosx-version-min= crt3.o%s)}"
 381
 382 /* We want a destructor last in the list.  */
 383 #define TM_DESTRUCTOR "%{fgnu-tm: -lcrttme.o}"
 384 #define ENDFILE_SPEC TM_DESTRUCTOR
 385
 386 #define DARWIN_EXTRA_SPECS                                              \
 387   { "darwin_crt1", DARWIN_CRT1_SPEC },                                  \
 388   { "darwin_dylib1", DARWIN_DYLIB1_SPEC },
 389
 390 #define DARWIN_DYLIB1_SPEC                                              \
 391   "%:version-compare(!> 10.5 mmacosx-version-min= -ldylib1.o)           \
 392    %:version-compare(>< 10.5 10.6 mmacosx-version-min= -ldylib1.10.5.o)"
 393
 394 #define DARWIN_CRT1_SPEC                                                \
 395   "%:version-compare(!> 10.5 mmacosx-version-min= -lcrt1.o)             \
 396    %:version-compare(>< 10.5 10.6 mmacosx-version-min= -lcrt1.10.5.o)   \
 397    %:version-compare(>< 10.6 10.8 mmacosx-version-min= -lcrt1.10.6.o)   \
 398    %{fgnu-tm: -lcrttms.o}"
 399
 400 #ifdef HAVE_AS_MMACOSX_VERSION_MIN_OPTION
 401 /* Emit macosx version (but only major).  */
 402 #define ASM_MMACOSX_VERSION_MIN_SPEC \
 403   " %{asm_macosx_version_min=*: -mmacosx-version-min=%*} %<asm_macosx_version_min=*"
 404 #else
 405 #define ASM_MMACOSX_VERSION_MIN_SPEC " %<asm_macosx_version_min=*"
 406 #endif
 407
 408 /* When we detect that we're cctools or llvm as, we need to insert the right
 409    additional options.  */
 410 #if HAVE_GNU_AS
 411 #define ASM_OPTIONS ""
 412 #else
 413 #define ASM_OPTIONS "%{v} %{w:-W} %{I*}"
 414 #endif
 415
 416 /* Default Darwin ASM_SPEC, very simple. */
 417 #define ASM_SPEC "-arch %(darwin_arch) \
 418   " ASM_OPTIONS " \
 419   %{Zforce_cpusubtype_ALL:-force_cpusubtype_ALL} \
 420   %{static}" ASM_MMACOSX_VERSION_MIN_SPEC
 421
 422 /* Default ASM_DEBUG_SPEC.  Darwin's as cannot currently produce dwarf
 423    debugging data.  */
 424
 425 #define ASM_DEBUG_SPEC  "%{g*:%{%:debug-level-gt(0):%{!gdwarf*:--gstabs}}}"
 426 #define ASM_FINAL_SPEC \
 427   "%{gsplit-dwarf:%ngsplit-dwarf is not supported on this platform } %<gsplit-dwarf"
 428
 429 /* We still allow output of STABS if the assembler supports it.  */
 430 #ifdef HAVE_AS_STABS_DIRECTIVE
 431 #define DBX_DEBUGGING_INFO 1
 432 #define PREFERRED_DEBUGGING_TYPE DBX_DEBUG
 433 #endif
 434
 435 #define DWARF2_DEBUGGING_INFO 1
 436
 437 #define DEBUG_FRAME_SECTION       "__DWARF,__debug_frame,regular,debug"
 438 #define DEBUG_INFO_SECTION        "__DWARF,__debug_info,regular,debug"
 439 #define DEBUG_ABBREV_SECTION      "__DWARF,__debug_abbrev,regular,debug"
 440 #define DEBUG_ARANGES_SECTION     "__DWARF,__debug_aranges,regular,debug"
 441 #define DEBUG_MACINFO_SECTION     "__DWARF,__debug_macinfo,regular,debug"
 442 #define DEBUG_LINE_SECTION        "__DWARF,__debug_line,regular,debug"
 443 #define DEBUG_LOC_SECTION         "__DWARF,__debug_loc,regular,debug"
 444 #define DEBUG_LOCLISTS_SECTION    "__DWARF,__debug_loclists,regular,debug"
 445
 446 #define DEBUG_STR_SECTION         "__DWARF,__debug_str,regular,debug"
 447 #define DEBUG_STR_OFFSETS_SECTION "__DWARF,__debug_str_offs,regular,debug"
 448 #define DEBUG_RANGES_SECTION      "__DWARF,__debug_ranges,regular,debug"
 449 #define DEBUG_RNGLISTS_SECTION    "__DWARF,__debug_rnglists,regular,debug"
 450 #define DEBUG_MACRO_SECTION       "__DWARF,__debug_macro,regular,debug"
 451
 452 #define DEBUG_LTO_INFO_SECTION    "__GNU_DWARF_LTO,__debug_info,regular,debug"
 453 #define DEBUG_LTO_ABBREV_SECTION  "__GNU_DWARF_LTO,__debug_abbrev,regular,debug"
 454 #define DEBUG_LTO_MACINFO_SECTION "__GNU_DWARF_LTO,__debug_macinfo,regular,debug"
 455 #define DEBUG_LTO_LINE_SECTION    "__GNU_DWARF_LTO,__debug_line,regular,debug"
 456 #define DEBUG_LTO_STR_SECTION     "__GNU_DWARF_LTO,__debug_str,regular,debug"
 457 #define DEBUG_LTO_MACRO_SECTION   "__GNU_DWARF_LTO,__debug_macro,regular,debug"
 458
 459 #define TARGET_WANT_DEBUG_PUB_SECTIONS true
 460 #define DEBUG_PUBNAMES_SECTION   ((debug_generate_pub_sections == 2) \
 461                                ? "__DWARF,__debug_gnu_pubn,regular,debug" \
 462                                : "__DWARF,__debug_pubnames,regular,debug")
 463
 464 #define DEBUG_PUBTYPES_SECTION   ((debug_generate_pub_sections == 2) \
 465                                ? "__DWARF,__debug_gnu_pubt,regular,debug" \
 466                                : "__DWARF,__debug_pubtypes,regular,debug")
 467
 468 /* When generating stabs debugging, use N_BINCL entries.  */
 469
 470 #define DBX_USE_BINCL
 471
 472 /* There is no limit to the length of stabs strings.  */
 473
 474 #define DBX_CONTIN_LENGTH 0
 475
 476 /* gdb needs a null N_SO at the end of each file for scattered loading.  */
 477
 478 #define DBX_OUTPUT_NULL_N_SO_AT_MAIN_SOURCE_FILE_END
 479
 480 /* GCC's definition of 'one_only' is the same as its definition of 'weak'.  */
 481 #define MAKE_DECL_ONE_ONLY(DECL) (DECL_WEAK (DECL) = 1)
 482
 483 /* Mach-O supports 'weak imports', and 'weak definitions' in coalesced
 484    sections.  machopic_select_section ensures that weak variables go in
 485    coalesced sections.  Weak aliases (or any other kind of aliases) are
 486    not supported.  Weak symbols that aren't visible outside the .s file
 487    are not supported.  */
 488 #define ASM_WEAKEN_DECL(FILE, DECL, NAME, ALIAS)                        \
 489   do {                                                                  \
 490     if (ALIAS)                                                          \
 491       {                                                                 \
 492         warning (0, "alias definitions not supported in Mach-O; ignored");      \
 493         break;                                                          \
 494       }                                                                 \
 495                                                                         \
 496     if (! DECL_EXTERNAL (DECL) && TREE_PUBLIC (DECL))                   \
 497       targetm.asm_out.globalize_label (FILE, NAME);                     \
 498     if (DECL_EXTERNAL (DECL))                                           \
 499       fputs ("\t.weak_reference ", FILE);                               \
 500     else if (lookup_attribute ("weak_import", DECL_ATTRIBUTES (DECL)))  \
 501       break;                                                            \
 502     else if (TREE_PUBLIC (DECL))                                        \
 503       fputs ("\t.weak_definition ", FILE);                              \
 504     else                                                                \
 505       break;                                                            \
 506     assemble_name (FILE, NAME);                                         \
 507     fputc ('\n', FILE);                                                 \
 508   } while (0)
 509
 510 /* Darwin has the pthread routines in libSystem, which every program
 511    links to, so there's no need for weak-ness for that.  */
 512 #define GTHREAD_USE_WEAK 0
 513
 514 /* The Darwin linker doesn't want coalesced symbols to appear in
 515    a static archive's table of contents. */
 516 #undef TARGET_WEAK_NOT_IN_ARCHIVE_TOC
 517 #define TARGET_WEAK_NOT_IN_ARCHIVE_TOC 1
 518
 519 /* On Darwin, we don't (at the time of writing) have linkonce sections
 520    with names, so it's safe to make the class data not comdat.  */
 521 #define TARGET_CXX_CLASS_DATA_ALWAYS_COMDAT hook_bool_void_false
 522
 523 /* For efficiency, on Darwin the RTTI information that is always
 524    emitted in the standard C++ library should not be COMDAT.  */
 525 #define TARGET_CXX_LIBRARY_RTTI_COMDAT hook_bool_void_false
 526
 527 /* We make exception information linkonce. */
 528 #undef TARGET_USES_WEAK_UNWIND_INFO
 529 #define TARGET_USES_WEAK_UNWIND_INFO 1
 530
 531 /* We need to use a nonlocal label for the start of an EH frame: the
 532    Darwin linker requires that a coalesced section start with a label.
 533    Unfortunately, it also requires that 'debug' sections don't contain
 534    labels.  */
 535 #undef FRAME_BEGIN_LABEL
 536 #define FRAME_BEGIN_LABEL (for_eh ? "EH_frame" : "Lframe")
 537
 538 /* Emit a label for the FDE corresponding to DECL.  EMPTY means
 539    emit a label for an empty FDE. */
 540 #define TARGET_ASM_EMIT_UNWIND_LABEL darwin_emit_unwind_label
 541
 542 /* Emit a label to separate the exception table.  */
 543 #define TARGET_ASM_EMIT_EXCEPT_TABLE_LABEL darwin_emit_except_table_label
 544
 545 /* Our profiling scheme doesn't LP labels and counter words.  */
 546
 547 #define NO_PROFILE_COUNTERS     1
 548
 549 #undef  INIT_SECTION_ASM_OP
 550 #define INIT_SECTION_ASM_OP ""
 551
 552 #undef  INVOKE__main
 553
 554 #define TARGET_ASM_CONSTRUCTOR  machopic_asm_out_constructor
 555 #define TARGET_ASM_DESTRUCTOR   machopic_asm_out_destructor
 556
 557 /* Always prefix with an underscore.  */
 558
 559 #define USER_LABEL_PREFIX "_"
 560
 561 /* A dummy symbol that will be replaced with the function base name.  */
 562 #define MACHOPIC_FUNCTION_BASE_NAME "<pic base>"
 563
 564 /* Don't output a .file directive.  That is only used by the assembler for
 565    error reporting.  */
 566 #undef  TARGET_ASM_FILE_START_FILE_DIRECTIVE
 567 #define TARGET_ASM_FILE_START_FILE_DIRECTIVE false
 568
 569 #undef  TARGET_ASM_FILE_END
 570 #define TARGET_ASM_FILE_END darwin_file_end
 571
 572 /* Because Mach-O relocations have a counter from 1 to 255 for the
 573    section number they apply to, it is necessary to output all
 574    normal sections before the LTO sections, to make sure that the
 575    sections that may have relocations always have a section number
 576    smaller than 255.  */
 577 #undef  TARGET_ASM_LTO_START
 578 #define TARGET_ASM_LTO_START darwin_asm_lto_start
 579 #undef  TARGET_ASM_LTO_END
 580 #define TARGET_ASM_LTO_END darwin_asm_lto_end
 581
 582 #define ASM_OUTPUT_SKIP(FILE,SIZE)  \
 583   fprintf (FILE, "\t.space " HOST_WIDE_INT_PRINT_UNSIGNED"\n", SIZE)
 584
 585 /* Give ObjC methods pretty symbol names.  */
 586
 587 #undef  OBJC_GEN_METHOD_LABEL
 588 #define OBJC_GEN_METHOD_LABEL(BUF,IS_INST,CLASS_NAME,CAT_NAME,SEL_NAME,NUM) \
 589   do { if (CAT_NAME)                                                    \
 590          sprintf (BUF, "%c[%s(%s) %s]", (IS_INST) ? '-' : '+',          \
 591                   (CLASS_NAME), (CAT_NAME), (SEL_NAME));                \
 592        else                                                             \
 593          sprintf (BUF, "%c[%s %s]", (IS_INST) ? '-' : '+',              \
 594                   (CLASS_NAME), (SEL_NAME));                            \
 595      } while (0)
 596
 597 #undef ASM_DECLARE_OBJECT_NAME
 598 #define ASM_DECLARE_OBJECT_NAME(FILE, NAME, DECL) \
 599         darwin_asm_declare_object_name ((FILE), (NAME), (DECL))
 600
 601 /* The RTTI data (e.g., __ti4name) is common and public (and static),
 602    but it does need to be referenced via indirect PIC data pointers.
 603    The machopic_define_symbol calls are telling the machopic subsystem
 604    that the name *is* defined in this module, so it doesn't need to
 605    make them indirect.  */
 606
 607 #define ASM_DECLARE_FUNCTION_NAME(FILE, NAME, DECL)                     \
 608   do {                                                                  \
 609     const char *xname = NAME;                                           \
 610     if (GET_CODE (XEXP (DECL_RTL (DECL), 0)) != SYMBOL_REF)             \
 611       xname = IDENTIFIER_POINTER (DECL_NAME (DECL));                    \
 612     if (! DECL_WEAK (DECL)                                              \
 613         && ((TREE_STATIC (DECL)                                         \
 614              && (!DECL_COMMON (DECL) || !TREE_PUBLIC (DECL)))           \
 615             || DECL_INITIAL (DECL)))                                    \
 616         machopic_define_symbol (DECL_RTL (DECL));                       \
 617     if ((TREE_STATIC (DECL)                                             \
 618          && (!DECL_COMMON (DECL) || !TREE_PUBLIC (DECL)))               \
 619         || DECL_INITIAL (DECL))                                         \
 620       (* targetm.encode_section_info) (DECL, DECL_RTL (DECL), false);   \
 621     ASM_OUTPUT_FUNCTION_LABEL (FILE, xname, DECL);                      \
 622   } while (0)
 623
 624 #undef TARGET_ASM_DECLARE_CONSTANT_NAME
 625 #define TARGET_ASM_DECLARE_CONSTANT_NAME darwin_asm_declare_constant_name
 626
 627 /* Wrap new method names in quotes so the assembler doesn't gag.
 628    Make Objective-C internal symbols local and in doing this, we need
 629    to accommodate the name mangling done by c++ on file scope locals.  */
 630
 631 int darwin_label_is_anonymous_local_objc_name (const char *name);
 632
 633 #undef  ASM_OUTPUT_LABELREF
 634 #define ASM_OUTPUT_LABELREF(FILE,NAME)                                       \
 635   do {                                                                       \
 636        const char *xname = (NAME);                                           \
 637        if (! strcmp (xname, MACHOPIC_FUNCTION_BASE_NAME))                    \
 638          machopic_output_function_base_name(FILE);                           \
 639        else if (xname[0] == '&' || xname[0] == '*')                          \
 640          {                                                                   \
 641            int len = strlen (xname);                                         \
 642            if (len > 6 && !strcmp ("$stub", xname + len - 5))                \
 643              machopic_validate_stub_or_non_lazy_ptr (xname);                 \
 644            else if (len > 7 && !strcmp ("$stub\"", xname + len - 6))         \
 645              machopic_validate_stub_or_non_lazy_ptr (xname);                 \
 646            else if (len > 14 && !strcmp ("$non_lazy_ptr", xname + len - 13)) \
 647              machopic_validate_stub_or_non_lazy_ptr (xname);                 \
 648            else if (len > 15 && !strcmp ("$non_lazy_ptr\"", xname + len - 14)) \
 649              machopic_validate_stub_or_non_lazy_ptr (xname);                 \
 650            if (xname[1] != '"' && name_needs_quotes (&xname[1]))             \
 651              fprintf (FILE, "\"%s\"", &xname[1]);                            \
 652            else                                                              \
 653              fputs (&xname[1], FILE);                                        \
 654          }                                                                   \
 655        else if (xname[0] == '+' || xname[0] == '-')                          \
 656          fprintf (FILE, "\"%s\"", xname);                                    \
 657        else if (darwin_label_is_anonymous_local_objc_name (xname))           \
 658          fprintf (FILE, "L%s", xname);                                       \
 659        else if (xname[0] != '"' && name_needs_quotes (xname))                \
 660          asm_fprintf (FILE, "\"%U%s\"", xname);                              \
 661        else                                                                  \
 662          asm_fprintf (FILE, "%U%s", xname);                                  \
 663   } while (0)
 664
 665 /* Output before executable code.  */
 666 #undef TEXT_SECTION_ASM_OP
 667 #define TEXT_SECTION_ASM_OP "\t.text"
 668
 669 /* Output before writable data.  */
 670
 671 #undef DATA_SECTION_ASM_OP
 672 #define DATA_SECTION_ASM_OP "\t.data"
 673
 674 #undef  ALIGN_ASM_OP
 675 #define ALIGN_ASM_OP            ".align"
 676
 677 #undef  ASM_OUTPUT_ALIGN
 678 #define ASM_OUTPUT_ALIGN(FILE,LOG)      \
 679   if ((LOG) != 0)                       \
 680     fprintf (FILE, "\t%s\t%d\n", ALIGN_ASM_OP, (LOG))
 681
 682 /* The maximum alignment which the object file format can support in
 683    bits.  For Mach-O, this is 2^15 bytes.  */
 684
 685 #undef  MAX_OFILE_ALIGNMENT
 686 #define MAX_OFILE_ALIGNMENT (0x8000 * 8)
 687
 688 #define L2_MAX_OFILE_ALIGNMENT 15
 689
 690 /*  These are the three variants that emit referenced blank space.  */
 691 #define ASM_OUTPUT_ALIGNED_BSS(FILE, DECL, NAME, SIZE, ALIGN)           \
 692         darwin_output_aligned_bss ((FILE), (DECL), (NAME), (SIZE), (ALIGN))
 693
 694 #undef  ASM_OUTPUT_ALIGNED_DECL_LOCAL
 695 #define ASM_OUTPUT_ALIGNED_DECL_LOCAL(FILE, DECL, NAME, SIZE, ALIGN)    \
 696         darwin_asm_output_aligned_decl_local                            \
 697                                   ((FILE), (DECL), (NAME), (SIZE), (ALIGN))
 698
 699 #undef  ASM_OUTPUT_ALIGNED_DECL_COMMON
 700 #define ASM_OUTPUT_ALIGNED_DECL_COMMON(FILE, DECL, NAME, SIZE, ALIGN)   \
 701         darwin_asm_output_aligned_decl_common                           \
 702                                    ((FILE), (DECL), (NAME), (SIZE), (ALIGN))
 703
 704 /* The generic version, archs should over-ride where required.  */
 705 #define MACHOPIC_NL_SYMBOL_PTR_SECTION ".non_lazy_symbol_pointer"
 706
 707 /* Declare the section variables.  */
 708 #ifndef USED_FOR_TARGET
 709 enum darwin_section_enum {
 710 #define DEF_SECTION(NAME, FLAGS, DIRECTIVE, OBJC) NAME,
 711 #include "darwin-sections.def"
 712 #undef DEF_SECTION
 713   NUM_DARWIN_SECTIONS
 714 };
 715 extern GTY(()) section * darwin_sections[NUM_DARWIN_SECTIONS];
 716 #endif
 717
 718 #undef  TARGET_ASM_SELECT_SECTION
 719 #define TARGET_ASM_SELECT_SECTION machopic_select_section
 720
 721 #undef  TARGET_ASM_FUNCTION_SECTION
 722 #define TARGET_ASM_FUNCTION_SECTION darwin_function_section
 723
 724 #undef  TARGET_ASM_SELECT_RTX_SECTION
 725 #define TARGET_ASM_SELECT_RTX_SECTION machopic_select_rtx_section
 726 #undef  TARGET_ASM_UNIQUE_SECTION
 727 #define TARGET_ASM_UNIQUE_SECTION darwin_unique_section
 728 #undef  TARGET_ASM_FUNCTION_RODATA_SECTION
 729 #define TARGET_ASM_FUNCTION_RODATA_SECTION default_no_function_rodata_section
 730
 731 #undef  TARGET_ASM_TM_CLONE_TABLE_SECTION
 732 #define TARGET_ASM_TM_CLONE_TABLE_SECTION darwin_tm_clone_table_section
 733
 734 #undef  TARGET_ASM_RELOC_RW_MASK
 735 #define TARGET_ASM_RELOC_RW_MASK machopic_reloc_rw_mask
 736
 737 /* Globalizing directive for a label.  */
 738 #define GLOBAL_ASM_OP "\t.globl "
 739 #define TARGET_ASM_GLOBALIZE_LABEL darwin_globalize_label
 740
 741 /* Emit an assembler directive to set visibility for a symbol.  Used
 742    to support visibility attribute and Darwin's private extern
 743    feature.  */
 744 #undef TARGET_ASM_ASSEMBLE_VISIBILITY
 745 #define TARGET_ASM_ASSEMBLE_VISIBILITY darwin_assemble_visibility
 746
 747 /* Extra attributes for Darwin.  */
 748 #define SUBTARGET_ATTRIBUTE_TABLE                                            \
 749   /* { name, min_len, max_len, decl_req, type_req, fn_type_req,              \
 750        affects_type_identity, handler, exclude } */                          \
 751   { "apple_kext_compatibility", 0, 0, false, true, false, false,             \
 752     darwin_handle_kext_attribute, NULL },                                    \
 753   { "weak_import", 0, 0, true, false, false, false,                          \
 754     darwin_handle_weak_import_attribute, NULL }
 755
 756 /* Make local constant labels linker-visible, so that if one follows a
 757    weak_global constant, ld64 will be able to separate the atoms.  */
 758 #undef ASM_GENERATE_INTERNAL_LABEL
 759 #define ASM_GENERATE_INTERNAL_LABEL(LABEL,PREFIX,NUM)   \
 760   do {                                                  \
 761     if (strcmp ("LC", PREFIX) == 0)                     \
 762       sprintf (LABEL, "*%s%ld", "lC", (long)(NUM));     \
 763     else                                                \
 764       sprintf (LABEL, "*%s%ld", PREFIX, (long)(NUM));   \
 765   } while (0)
 766
 767 #undef TARGET_ASM_MARK_DECL_PRESERVED
 768 #define TARGET_ASM_MARK_DECL_PRESERVED darwin_mark_decl_preserved
 769
 770 /* Set on a symbol with SYMBOL_FLAG_FUNCTION or
 771    MACHO_SYMBOL_FLAG_VARIABLE to indicate that the function or
 772    variable has been defined in this translation unit.
 773    When porting Mach-O to new architectures you need to make
 774    sure these aren't clobbered by the backend.  */
 775
 776 #define MACHO_SYMBOL_FLAG_VARIABLE (SYMBOL_FLAG_MACH_DEP)
 777 #define MACHO_SYMBOL_FLAG_DEFINED ((SYMBOL_FLAG_MACH_DEP) << 1)
 778
 779 /* Set on a symbol to indicate when fix-and-continue style code
 780    generation is being used and the symbol refers to a static symbol
 781    that should be rebound from new instances of a translation unit to
 782    the original instance of the data.  */
 783
 784 #define MACHO_SYMBOL_STATIC ((SYMBOL_FLAG_MACH_DEP) << 2)
 785
 786 /* Symbolic names for various things we might know about a symbol.  */
 787
 788 enum machopic_addr_class {
 789   MACHOPIC_UNDEFINED,
 790   MACHOPIC_DEFINED_DATA,
 791   MACHOPIC_UNDEFINED_DATA,
 792   MACHOPIC_DEFINED_FUNCTION,
 793   MACHOPIC_UNDEFINED_FUNCTION
 794 };
 795
 796 /* Macros defining the various PIC cases.  */
 797
 798 #undef  MACHO_DYNAMIC_NO_PIC_P
 799 #define MACHO_DYNAMIC_NO_PIC_P  (TARGET_MACHO_DYNAMIC_NO_PIC)
 800 #undef  MACHOPIC_INDIRECT
 801 #define MACHOPIC_INDIRECT       (flag_pic || MACHO_DYNAMIC_NO_PIC_P)
 802 #define MACHOPIC_JUST_INDIRECT  (MACHO_DYNAMIC_NO_PIC_P)
 803 #undef  MACHOPIC_PURE
 804 #define MACHOPIC_PURE           (flag_pic && ! MACHO_DYNAMIC_NO_PIC_P)
 805
 806 #undef TARGET_ENCODE_SECTION_INFO
 807 #define TARGET_ENCODE_SECTION_INFO  darwin_encode_section_info
 808 #undef TARGET_STRIP_NAME_ENCODING
 809 #define TARGET_STRIP_NAME_ENCODING  default_strip_name_encoding
 810
 811 #define GEN_BINDER_NAME_FOR_STUB(BUF,STUB,STUB_LENGTH)          \
 812   do {                                                          \
 813     const char *const stub_ = (STUB);                           \
 814     char *buffer_ = (BUF);                                      \
 815     strcpy (buffer_, stub_);                                    \
 816     if (stub_[0] == '"')                                        \
 817       {                                                         \
 818         strcpy (buffer_ + (STUB_LENGTH) - 1, "_binder\"");      \
 819       }                                                         \
 820     else                                                        \
 821       {                                                         \
 822         strcpy (buffer_ + (STUB_LENGTH), "_binder");            \
 823       }                                                         \
 824   } while (0)
 825
 826 #define GEN_SYMBOL_NAME_FOR_SYMBOL(BUF,SYMBOL,SYMBOL_LENGTH)    \
 827   do {                                                          \
 828     const char *const symbol_ = (SYMBOL);                       \
 829     char *buffer_ = (BUF);                                      \
 830     if (name_needs_quotes (symbol_) && symbol_[0] != '"')       \
 831       {                                                         \
 832           sprintf (buffer_, "\"%s\"", symbol_);                 \
 833       }                                                         \
 834     else                                                        \
 835       {                                                         \
 836         strcpy (buffer_, symbol_);                              \
 837       }                                                         \
 838   } while (0)
 839
 840 /* Given a symbol name string, create the lazy pointer version
 841    of the symbol name.  */
 842
 843 #define GEN_LAZY_PTR_NAME_FOR_SYMBOL(BUF,SYMBOL,SYMBOL_LENGTH)  \
 844   do {                                                          \
 845     const char *symbol_ = (SYMBOL);                             \
 846     char *buffer_ = (BUF);                                      \
 847     if (symbol_[0] == '"')                                      \
 848       {                                                         \
 849         strcpy (buffer_, "\"L");                                \
 850         strcpy (buffer_ + 2, symbol_ + 1);                      \
 851         strcpy (buffer_ + (SYMBOL_LENGTH), "$lazy_ptr\"");      \
 852       }                                                         \
 853     else if (name_needs_quotes (symbol_))                       \
 854       {                                                         \
 855         strcpy (buffer_, "\"L");                                \
 856         strcpy (buffer_ + 2, symbol_);                          \
 857         strcpy (buffer_ + (SYMBOL_LENGTH) + 2, "$lazy_ptr\"");  \
 858       }                                                         \
 859     else                                                        \
 860       {                                                         \
 861         strcpy (buffer_, "L");                                  \
 862         strcpy (buffer_ + 1, symbol_);                          \
 863         strcpy (buffer_ + (SYMBOL_LENGTH) + 1, "$lazy_ptr");    \
 864       }                                                         \
 865   } while (0)
 866
 867 #define EH_FRAME_SECTION_NAME   "__TEXT"
 868 #define EH_FRAME_SECTION_ATTR ",coalesced,no_toc+strip_static_syms+live_support"
 869
 870 #undef ASM_PREFERRED_EH_DATA_FORMAT
 871 #define ASM_PREFERRED_EH_DATA_FORMAT(CODE,GLOBAL)  \
 872   (((CODE) == 2 && (GLOBAL) == 1) \
 873    ? (DW_EH_PE_pcrel | DW_EH_PE_indirect | DW_EH_PE_sdata4) : \
 874      ((CODE) == 1 || (GLOBAL) == 0) ? DW_EH_PE_pcrel : DW_EH_PE_absptr)
 875
 876 #define ASM_OUTPUT_DWARF_DELTA(FILE,SIZE,LABEL1,LABEL2)  \
 877   darwin_asm_output_dwarf_delta (FILE, SIZE, LABEL1, LABEL2, 0)
 878
 879 #define ASM_OUTPUT_DWARF_OFFSET(FILE,SIZE,LABEL,OFFSET,BASE)  \
 880   darwin_asm_output_dwarf_offset (FILE, SIZE, LABEL, OFFSET, BASE)
 881
 882 #define ASM_MAYBE_OUTPUT_ENCODED_ADDR_RTX(ASM_OUT_FILE, ENCODING, SIZE, ADDR, DONE)     \
 883       if (ENCODING == ASM_PREFERRED_EH_DATA_FORMAT (2, 1)) {                            \
 884         darwin_non_lazy_pcrel (ASM_OUT_FILE, ADDR);                                     \
 885         goto DONE;                                                                      \
 886       }
 887
 888 /* Experimentally, putting jump tables in text is faster on SPEC.
 889    Also this is needed for correctness for coalesced functions.  */
 890
 891 #ifndef JUMP_TABLES_IN_TEXT_SECTION
 892 #define JUMP_TABLES_IN_TEXT_SECTION 1
 893 #endif
 894
 895 #define TARGET_TERMINATE_DW2_EH_FRAME_INFO false
 896
 897 #define TARGET_ASM_INIT_SECTIONS darwin_init_sections
 898 #undef TARGET_ASM_NAMED_SECTION
 899 #define TARGET_ASM_NAMED_SECTION darwin_asm_named_section
 900
 901 #define DARWIN_REGISTER_TARGET_PRAGMAS()                        \
 902   do {                                                          \
 903     if (!flag_preprocess_only)                                  \
 904       cpp_register_pragma (parse_in, NULL, "mark",              \
 905                            darwin_pragma_ignore, false);        \
 906     c_register_pragma (0, "options", darwin_pragma_options);    \
 907     c_register_pragma (0, "segment", darwin_pragma_ignore);     \
 908     c_register_pragma (0, "unused", darwin_pragma_unused);      \
 909     c_register_pragma (0, "ms_struct", darwin_pragma_ms_struct); \
 910   } while (0)
 911
 912 #undef ASM_APP_ON
 913 #define ASM_APP_ON ""
 914 #undef ASM_APP_OFF
 915 #define ASM_APP_OFF ""
 916
 917 void darwin_register_frameworks (const char *, const char *, int);
 918 void darwin_register_objc_includes (const char *, const char *, int);
 919 #define TARGET_EXTRA_PRE_INCLUDES darwin_register_objc_includes
 920 #define TARGET_EXTRA_INCLUDES darwin_register_frameworks
 921
 922 void add_framework_path (char *);
 923 #define TARGET_OPTF add_framework_path
 924
 925 #define TARGET_POSIX_IO
 926
 927 #define WINT_TYPE "int"
 928
 929 /* Every program on darwin links against libSystem which contains the pthread
 930    routines, so there's no need to explicitly call out when doing threaded
 931    work.  */
 932
 933 #undef GOMP_SELF_SPECS
 934 #define GOMP_SELF_SPECS ""
 935 #undef GTM_SELF_SPECS
 936 #define GTM_SELF_SPECS ""
 937
 938 /* Darwin disables section anchors by default.
 939    They should be enabled per arch where support exists in that arch.  */
 940 #define TARGET_ASM_OUTPUT_ANCHOR NULL
 941 #define DARWIN_SECTION_ANCHORS 0
 942
 943 #define HAVE_ENABLE_EXECUTE_STACK
 944
 945 /* For Apple KEXTs, we make the constructors return this to match gcc
 946    2.95.  */
 947 #define TARGET_CXX_CDTOR_RETURNS_THIS (darwin_kextabi_p)
 948 #define TARGET_KEXTABI flag_apple_kext
 949
 950 /* We have target-specific builtins.  */
 951 #define SUBTARGET_FOLD_BUILTIN darwin_fold_builtin
 952
 953 #define TARGET_N_FORMAT_TYPES 1
 954 #define TARGET_FORMAT_TYPES darwin_additional_format_types
 955
 956 #ifndef USED_FOR_TARGET
 957 extern void darwin_driver_init (unsigned int *,struct cl_decoded_option **);
 958 #define GCC_DRIVER_HOST_INITIALIZATION \
 959   darwin_driver_init (&decoded_options_count, &decoded_options)
 960 #endif
 961
 962 /* The Apple assembler and linker do not support constructor priorities.  */
 963 #undef SUPPORTS_INIT_PRIORITY
 964 #define SUPPORTS_INIT_PRIORITY 0
 965
 966 /* When building cross-compilers (and native crosses) we shall default to
 967    providing an osx-version-min of this unless overridden by the User.
 968    10.5 is the only version that fully supports all our archs so that's the
 969    fall-back default.  */
 970 #define DEF_MIN_OSX_VERSION "10.5"
 971
 972 /* Later versions of ld64 support coalescing weak code/data without requiring
 973    that they be placed in specially identified sections.  This is the earliest
 974    _tested_ version known to support this so far.  */
 975 #define MIN_LD64_NO_COAL_SECTS "236.4"
 976
 977 #ifndef LD64_VERSION
 978 #define LD64_VERSION "85.2"
 979 #else
 980 #define DEF_LD64 LD64_VERSION
 981 #endif
 982
 983 #endif /* CONFIG_DARWIN_H */