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 /* Don't assume anything about the header files.  */
  47 #define NO_IMPLICIT_EXTERN_C
  48
  49 /* Suppress g++ attempt to link in the math library automatically. */
  50 #define MATH_LIBRARY ""
  51
  52 /* We have atexit.  */
  53
  54 #define HAVE_ATEXIT
  55
  56 /* Define an empty body for the function do_global_dtors() in libgcc2.c.  */
  57
  58 #define DO_GLOBAL_DTORS_BODY
  59
  60 /* The string value for __SIZE_TYPE__.  */
  61
  62 #ifndef SIZE_TYPE
  63 #define SIZE_TYPE "long unsigned int"
  64 #endif
  65
  66 /* Type used for ptrdiff_t, as a string used in a declaration.  */
  67
  68 #undef  PTRDIFF_TYPE
  69 #define PTRDIFF_TYPE "int"
  70
  71 /* wchar_t is int.  */
  72
  73 #undef  WCHAR_TYPE
  74 #define WCHAR_TYPE "int"
  75 #undef  WCHAR_TYPE_SIZE
  76 #define WCHAR_TYPE_SIZE 32
  77
  78 #define INT8_TYPE "signed char"
  79 #define INT16_TYPE "short int"
  80 #define INT32_TYPE "int"
  81 #define INT64_TYPE "long long int"
  82 #define UINT8_TYPE "unsigned char"
  83 #define UINT16_TYPE "short unsigned int"
  84 #define UINT32_TYPE "unsigned int"
  85 #define UINT64_TYPE "long long unsigned int"
  86
  87 #define INT_LEAST8_TYPE "signed char"
  88 #define INT_LEAST16_TYPE "short int"
  89 #define INT_LEAST32_TYPE "int"
  90 #define INT_LEAST64_TYPE "long long int"
  91 #define UINT_LEAST8_TYPE "unsigned char"
  92 #define UINT_LEAST16_TYPE "short unsigned int"
  93 #define UINT_LEAST32_TYPE "unsigned int"
  94 #define UINT_LEAST64_TYPE "long long unsigned int"
  95
  96 #define INT_FAST8_TYPE "signed char"
  97 #define INT_FAST16_TYPE "short int"
  98 #define INT_FAST32_TYPE "int"
  99 #define INT_FAST64_TYPE "long long int"
 100 #define UINT_FAST8_TYPE "unsigned char"
 101 #define UINT_FAST16_TYPE "short unsigned int"
 102 #define UINT_FAST32_TYPE "unsigned int"
 103 #define UINT_FAST64_TYPE "long long unsigned int"
 104
 105 #define INTPTR_TYPE "long int"
 106 #define UINTPTR_TYPE "long unsigned int"
 107
 108 #define SIG_ATOMIC_TYPE "int"
 109
 110 /* Default to using the NeXT-style runtime, since that's what is
 111    pre-installed on Darwin systems.  */
 112
 113 #define NEXT_OBJC_RUNTIME 1
 114
 115 /* Don't default to pcc-struct-return, because gcc is the only compiler, and
 116    we want to retain compatibility with older gcc versions.  */
 117
 118 #undef  DEFAULT_PCC_STRUCT_RETURN
 119 #define DEFAULT_PCC_STRUCT_RETURN 0
 120
 121 /* True if pragma ms_struct is in effect.  */
 122 extern GTY(()) int darwin_ms_struct;
 123
 124 #define DRIVER_SELF_SPECS                                       \
 125   "%{gfull:-g -fno-eliminate-unused-debug-symbols} %<gfull",    \
 126   "%{gused:-g -feliminate-unused-debug-symbols} %<gused",       \
 127   "%{fapple-kext|mkernel:-static}",                             \
 128   "%{shared:-Zdynamiclib} %<shared"
 129
 130 #define DARWIN_CC1_SPEC                                                 \
 131   "%{findirect-virtual-calls: -fapple-kext} %<findirect-virtual-calls " \
 132   "%{fterminated-vtables: -fapple-kext} %<fterminated-vtables "         \
 133   "%<filelist* %<framework*"
 134
 135 #define SUBSUBTARGET_OVERRIDE_OPTIONS                                   \
 136   do {                                                                  \
 137     darwin_override_options ();                                         \
 138   } while (0)
 139
 140 #define SUBTARGET_C_COMMON_OVERRIDE_OPTIONS do {                        \
 141     if (flag_mkernel || flag_apple_kext)                                \
 142       {                                                                 \
 143         if (flag_use_cxa_atexit == 2)                                   \
 144           flag_use_cxa_atexit = 0;                                      \
 145         /* kexts should always be built without the coalesced sections  \
 146            because the kernel loader doesn't grok such sections.  */    \
 147         flag_weak = 0;                                                  \
 148         /* No RTTI in kexts.  */                                        \
 149         flag_rtti = 0;                                                  \
 150       }                                                                 \
 151   } while (0)
 152
 153 /* Machine dependent cpp options.  Don't add more options here, add
 154    them to darwin_cpp_builtins in darwin-c.c.  */
 155
 156 #undef  CPP_SPEC
 157 #define CPP_SPEC "%{static:%{!dynamic:-D__STATIC__}}%{!static:-D__DYNAMIC__}" \
 158         " %{pthread:-D_REENTRANT}"
 159
 160 /* This is mostly a clone of the standard LINK_COMMAND_SPEC, plus
 161    precomp, libtool, and fat build additions.
 162
 163    In general, random Darwin linker flags should go into LINK_SPEC
 164    instead of LINK_COMMAND_SPEC.  The command spec is better for
 165    specifying the handling of options understood by generic Unix
 166    linkers, and for positional arguments like libraries.  */
 167
 168 #if LD64_HAS_EXPORT_DYNAMIC
 169 #define DARWIN_EXPORT_DYNAMIC " %{rdynamic:-export_dynamic}"
 170 #else
 171 #define DARWIN_EXPORT_DYNAMIC " %{rdynamic: %nrdynamic is not supported}"
 172 #endif
 173
 174 #define LINK_COMMAND_SPEC_A \
 175    "%{!fdump=*:%{!fsyntax-only:%{!c:%{!M:%{!MM:%{!E:%{!S:\
 176     %(linker)" \
 177     LINK_PLUGIN_SPEC \
 178     "%{flto*:%<fcompare-debug*} \
 179     %{flto*} \
 180     %l " LINK_COMPRESS_DEBUG_SPEC \
 181    "%X %{s} %{t} %{Z} %{u*} \
 182     %{e*} %{r} \
 183     %{o*}%{!o:-o a.out} \
 184     %{!nostdlib:%{!nostartfiles:%S}} \
 185     %{L*} %(link_libgcc) %o %{fprofile-arcs|fprofile-generate*|coverage:-lgcov} \
 186     %{fopenacc|fopenmp|%:gt(%{ftree-parallelize-loops=*:%*} 1): \
 187       %{static|static-libgcc|static-libstdc++|static-libgfortran: libgomp.a%s; : -lgomp } } \
 188     %{fgnu-tm: \
 189       %{static|static-libgcc|static-libstdc++|static-libgfortran: libitm.a%s; : -litm } } \
 190     %{!nostdlib:%{!nodefaultlibs:\
 191       %{%:sanitize(address): -lasan } \
 192       %{%:sanitize(undefined): -lubsan } \
 193       %(link_ssp) \
 194       " DARWIN_EXPORT_DYNAMIC " %<rdynamic \
 195       %(link_gcc_c_sequence) \
 196     }}\
 197     %{!nostdlib:%{!nostartfiles:%E}} %{T*} %{F*} }}}}}}}"
 198
 199 #define DSYMUTIL "\ndsymutil"
 200
 201 #define DSYMUTIL_SPEC \
 202    "%{!fdump=*:%{!fsyntax-only:%{!c:%{!M:%{!MM:%{!E:%{!S:\
 203     %{v} \
 204     %{gdwarf-2:%{!gstabs*:%{%:debug-level-gt(0): -idsym}}}\
 205     %{.c|.cc|.C|.cpp|.cp|.c++|.cxx|.CPP|.m|.mm: \
 206     %{gdwarf-2:%{!gstabs*:%{%:debug-level-gt(0): -dsym}}}}}}}}}}}"
 207
 208 #define LINK_COMMAND_SPEC LINK_COMMAND_SPEC_A DSYMUTIL_SPEC
 209
 210 /* Tell collect2 to run dsymutil for us as necessary.  */
 211 #define COLLECT_RUN_DSYMUTIL 1
 212
 213 /* We only want one instance of %G, since libSystem (Darwin's -lc) does not depend
 214    on libgcc.  */
 215 #undef  LINK_GCC_C_SEQUENCE_SPEC
 216 #define LINK_GCC_C_SEQUENCE_SPEC "%G %L"
 217
 218 /* ld64 supports a sysroot, it just has a different name and there's no easy
 219    way to check for it at config time.  */
 220 #undef HAVE_LD_SYSROOT
 221 #define HAVE_LD_SYSROOT 1
 222 /* It seems the only (working) way to get a space after %R is to append a
 223    dangling '/'.  */
 224 #define SYSROOT_SPEC "%{!isysroot*:-syslibroot %R/ }"
 225
 226 /* Do the same as clang, for now, and insert the sysroot for ld when an
 227    isysroot is specified.  */
 228 #define LINK_SYSROOT_SPEC "%{isysroot*:-syslibroot %*}"
 229
 230 /* Suppress the addition of extra prefix paths when a sysroot is in use.  */
 231 #define STANDARD_STARTFILE_PREFIX_1 ""
 232 #define STANDARD_STARTFILE_PREFIX_2 ""
 233
 234 #define DARWIN_PIE_SPEC "%{fpie|pie|fPIE:}"
 235
 236 /* Please keep the random linker options in alphabetical order (modulo
 237    'Z' and 'no' prefixes). Note that options taking arguments may appear
 238    multiple times on a command line with different arguments each time,
 239    so put a * after their names so all of them get passed.  */
 240 #define LINK_SPEC  \
 241   "%{static}%{!static:-dynamic} \
 242    %:remove-outfile(-ldl) \
 243    %:remove-outfile(-lm) \
 244    %:remove-outfile(-lpthread) \
 245    %{fgnu-runtime: %{static|static-libgcc: \
 246                      %:replace-outfile(-lobjc libobjc-gnu.a%s); \
 247                     :%:replace-outfile(-lobjc -lobjc-gnu ) } }\
 248    %{static|static-libgcc|static-libgfortran:%:replace-outfile(-lgfortran libgfortran.a%s)}\
 249    %{static|static-libgcc|static-libstdc++|static-libgfortran:%:replace-outfile(-lgomp libgomp.a%s)}\
 250    %{static|static-libgcc|static-libstdc++:%:replace-outfile(-lstdc++ libstdc++.a%s)}\
 251    %{!Zdynamiclib: \
 252      %{Zforce_cpusubtype_ALL:-arch %(darwin_arch) -force_cpusubtype_ALL} \
 253      %{!Zforce_cpusubtype_ALL:-arch %(darwin_subarch)} \
 254      %{Zbundle:-bundle} \
 255      %{Zbundle_loader*:-bundle_loader %*} \
 256      %{client_name*} \
 257      %{compatibility_version*:%e-compatibility_version only allowed with -dynamiclib\
 258 } \
 259      %{current_version*:%e-current_version only allowed with -dynamiclib} \
 260      %{Zforce_flat_namespace:-force_flat_namespace} \
 261      %{Zinstall_name*:%e-install_name only allowed with -dynamiclib} \
 262      %{keep_private_externs} \
 263      %{private_bundle} \
 264     } \
 265    %{Zdynamiclib: -dylib \
 266      %{Zbundle:%e-bundle not allowed with -dynamiclib} \
 267      %{Zbundle_loader*:%e-bundle_loader not allowed with -dynamiclib} \
 268      %{client_name*:%e-client_name not allowed with -dynamiclib} \
 269      %{compatibility_version*:-dylib_compatibility_version %*} \
 270      %{current_version*:-dylib_current_version %*} \
 271      %{Zforce_cpusubtype_ALL:-arch %(darwin_arch)} \
 272      %{!Zforce_cpusubtype_ALL: -arch %(darwin_subarch)} \
 273      %{Zforce_flat_namespace:%e-force_flat_namespace not allowed with -dynamiclib} \
 274      %{Zinstall_name*:-dylib_install_name %*} \
 275      %{keep_private_externs:%e-keep_private_externs not allowed with -dynamiclib} \
 276      %{private_bundle:%e-private_bundle not allowed with -dynamiclib} \
 277     } \
 278    %{Zall_load:-all_load} \
 279    %{Zallowable_client*:-allowable_client %*} \
 280    %{Zbind_at_load:-bind_at_load} \
 281    %{Zarch_errors_fatal:-arch_errors_fatal} \
 282    %{Zdead_strip:-dead_strip} \
 283    %{Zno_dead_strip_inits_and_terms:-no_dead_strip_inits_and_terms} \
 284    %{Zdylib_file*:-dylib_file %*} \
 285    %{Zdynamic:-dynamic}\
 286    %{Zexported_symbols_list*:-exported_symbols_list %*} \
 287    %{Zflat_namespace:-flat_namespace} \
 288    %{headerpad_max_install_names} \
 289    %{Zimage_base*:-image_base %*} \
 290    %{Zinit*:-init %*} \
 291    %{mmacosx-version-min=*:-macosx_version_min %*} \
 292    %{nomultidefs} \
 293    %{Zmulti_module:-multi_module} %{Zsingle_module:-single_module} \
 294    %{Zmultiply_defined*:-multiply_defined %*} \
 295    %{!Zmultiply_defined*:%{shared-libgcc: \
 296      %:version-compare(< 10.5 mmacosx-version-min= -multiply_defined) \
 297      %:version-compare(< 10.5 mmacosx-version-min= suppress)}} \
 298    %{Zmultiplydefinedunused*:-multiply_defined_unused %*} \
 299    " DARWIN_PIE_SPEC " \
 300    %{prebind} %{noprebind} %{nofixprebinding} %{prebind_all_twolevel_modules} \
 301    %{read_only_relocs} \
 302    %{sectcreate*} %{sectorder*} %{seg1addr*} %{segprot*} \
 303    %{Zsegaddr*:-segaddr %*} \
 304    %{Zsegs_read_only_addr*:-segs_read_only_addr %*} \
 305    %{Zsegs_read_write_addr*:-segs_read_write_addr %*} \
 306    %{Zseg_addr_table*: -seg_addr_table %*} \
 307    %{Zfn_seg_addr_table_filename*:-seg_addr_table_filename %*} \
 308    %{sub_library*} %{sub_umbrella*} \
 309    " LINK_SYSROOT_SPEC " \
 310    %{twolevel_namespace} %{twolevel_namespace_hints} \
 311    %{Zumbrella*: -umbrella %*} \
 312    %{undefined*} \
 313    %{Zunexported_symbols_list*:-unexported_symbols_list %*} \
 314    %{Zweak_reference_mismatches*:-weak_reference_mismatches %*} \
 315    %{!Zweak_reference_mismatches*:-weak_reference_mismatches non-weak} \
 316    %{X} \
 317    %{y*} \
 318    %{w} \
 319    %{pagezero_size*} %{segs_read_*} %{seglinkedit} %{noseglinkedit}  \
 320    %{sectalign*} %{sectobjectsymbols*} %{segcreate*} %{whyload} \
 321    %{whatsloaded} %{dylinker_install_name*} \
 322    %{dylinker} %{Mach} "
 323
 324
 325 /* Machine dependent libraries.  */
 326
 327 #define LIB_SPEC "%{!static:-lSystem}"
 328
 329 /* Support -mmacosx-version-min by supplying different (stub) libgcc_s.dylib
 330    libraries to link against, and by not linking against libgcc_s on
 331    earlier-than-10.3.9.
 332
 333    Note that by default, -lgcc_eh is not linked against!  This is
 334    because in a future version of Darwin the EH frame information may
 335    be in a new format, or the fallback routine might be changed; if
 336    you want to explicitly link against the static version of those
 337    routines, because you know you don't need to unwind through system
 338    libraries, you need to explicitly say -static-libgcc.
 339
 340    If it is linked against, it has to be before -lgcc, because it may
 341    need symbols from -lgcc.  */
 342 #undef REAL_LIBGCC_SPEC
 343 #define REAL_LIBGCC_SPEC                                                   \
 344    "%{static-libgcc|static: -lgcc_eh -lgcc;                                \
 345       shared-libgcc|fexceptions|fgnu-runtime:                              \
 346        %:version-compare(!> 10.5 mmacosx-version-min= -lgcc_s.10.4)        \
 347        %:version-compare(>< 10.5 10.6 mmacosx-version-min= -lgcc_s.10.5)   \
 348        %:version-compare(!> 10.5 mmacosx-version-min= -lgcc_ext.10.4)      \
 349        %:version-compare(>= 10.5 mmacosx-version-min= -lgcc_ext.10.5)      \
 350        -lgcc ;                                                             \
 351       :%:version-compare(>< 10.3.9 10.5 mmacosx-version-min= -lgcc_s.10.4) \
 352        %:version-compare(>< 10.5 10.6 mmacosx-version-min= -lgcc_s.10.5)   \
 353        %:version-compare(!> 10.5 mmacosx-version-min= -lgcc_ext.10.4)      \
 354        %:version-compare(>= 10.5 mmacosx-version-min= -lgcc_ext.10.5)      \
 355        -lgcc }"
 356
 357 /* We specify crt0.o as -lcrt0.o so that ld will search the library path.
 358
 359    crt3.o provides __cxa_atexit on systems that don't have it.  Since
 360    it's only used with C++, which requires passing -shared-libgcc, key
 361    off that to avoid unnecessarily adding a destructor to every
 362    powerpc program built.  */
 363
 364 #undef  STARTFILE_SPEC
 365 #define STARTFILE_SPEC                                                      \
 366   "%{Zdynamiclib: %(darwin_dylib1) %{fgnu-tm: -lcrttms.o}}                  \
 367    %{!Zdynamiclib:%{Zbundle:%{!static:                                      \
 368         %:version-compare(< 10.6 mmacosx-version-min= -lbundle1.o)          \
 369         %{fgnu-tm: -lcrttms.o}}}                                            \
 370      %{!Zbundle:%{pg:%{static:-lgcrt0.o}                                    \
 371                      %{!static:%{object:-lgcrt0.o}                          \
 372                                %{!object:%{preload:-lgcrt0.o}               \
 373                                  %{!preload:-lgcrt1.o                       \
 374                                  %:version-compare(>= 10.8 mmacosx-version-min= -no_new_main) \
 375                                  %(darwin_crt2)}}}}    \
 376                 %{!pg:%{static:-lcrt0.o}                                    \
 377                       %{!static:%{object:-lcrt0.o}                          \
 378                                 %{!object:%{preload:-lcrt0.o}               \
 379                                   %{!preload: %(darwin_crt1)                \
 380                                               %(darwin_crt2)}}}}}}          \
 381   %{shared-libgcc:%:version-compare(< 10.5 mmacosx-version-min= crt3.o%s)}"
 382
 383 /* We want a destructor last in the list.  */
 384 #define TM_DESTRUCTOR "%{fgnu-tm: -lcrttme.o}"
 385 #define ENDFILE_SPEC TM_DESTRUCTOR
 386
 387 #define DARWIN_EXTRA_SPECS                                              \
 388   { "darwin_crt1", DARWIN_CRT1_SPEC },                                  \
 389   { "darwin_dylib1", DARWIN_DYLIB1_SPEC },
 390
 391 #define DARWIN_DYLIB1_SPEC                                              \
 392   "%:version-compare(!> 10.5 mmacosx-version-min= -ldylib1.o)           \
 393    %:version-compare(>< 10.5 10.6 mmacosx-version-min= -ldylib1.10.5.o)"
 394
 395 #define DARWIN_CRT1_SPEC                                                \
 396   "%:version-compare(!> 10.5 mmacosx-version-min= -lcrt1.o)             \
 397    %:version-compare(>< 10.5 10.6 mmacosx-version-min= -lcrt1.10.5.o)   \
 398    %:version-compare(>< 10.6 10.8 mmacosx-version-min= -lcrt1.10.6.o)   \
 399    %{fgnu-tm: -lcrttms.o}"
 400
 401 #ifdef HAVE_AS_MMACOSX_VERSION_MIN_OPTION
 402 /* Emit macosx version (but only major).  */
 403 #define ASM_MMACOSX_VERSION_MIN_SPEC \
 404   " %{asm_macosx_version_min=*: -mmacosx-version-min=%*} %<asm_macosx_version_min=*"
 405 #else
 406 #define ASM_MMACOSX_VERSION_MIN_SPEC " %<asm_macosx_version_min=*"
 407 #endif
 408
 409 /* When we detect that we're cctools or llvm as, we need to insert the right
 410    additional options.  */
 411 #if HAVE_GNU_AS
 412 #define ASM_OPTIONS ""
 413 #else
 414 #define ASM_OPTIONS "%{v} %{w:-W} %{I*}"
 415 #endif
 416
 417 /* Default Darwin ASM_SPEC, very simple. */
 418 #define ASM_SPEC "-arch %(darwin_arch) \
 419   " ASM_OPTIONS " \
 420   %{Zforce_cpusubtype_ALL:-force_cpusubtype_ALL} \
 421   %{static}" ASM_MMACOSX_VERSION_MIN_SPEC
 422
 423 /* Default ASM_DEBUG_SPEC.  Darwin's as cannot currently produce dwarf
 424    debugging data.  */
 425
 426 #define ASM_DEBUG_SPEC  "%{g*:%{%:debug-level-gt(0):%{!gdwarf*:--gstabs}}}"
 427
 428 /* We still allow output of STABS if the assembler supports it.  */
 429 #ifdef HAVE_AS_STABS_DIRECTIVE
 430 #define DBX_DEBUGGING_INFO 1
 431 #define PREFERRED_DEBUGGING_TYPE DBX_DEBUG
 432 #endif
 433
 434 #define DWARF2_DEBUGGING_INFO 1
 435
 436 #define DEBUG_FRAME_SECTION     "__DWARF,__debug_frame,regular,debug"
 437 #define DEBUG_INFO_SECTION      "__DWARF,__debug_info,regular,debug"
 438 #define DEBUG_ABBREV_SECTION    "__DWARF,__debug_abbrev,regular,debug"
 439 #define DEBUG_ARANGES_SECTION   "__DWARF,__debug_aranges,regular,debug"
 440 #define DEBUG_MACINFO_SECTION   "__DWARF,__debug_macinfo,regular,debug"
 441 #define DEBUG_LINE_SECTION      "__DWARF,__debug_line,regular,debug"
 442 #define DEBUG_LOC_SECTION       "__DWARF,__debug_loc,regular,debug"
 443 #define DEBUG_PUBNAMES_SECTION  "__DWARF,__debug_pubnames,regular,debug"
 444 #define DEBUG_PUBTYPES_SECTION  "__DWARF,__debug_pubtypes,regular,debug"
 445 #define DEBUG_STR_SECTION       "__DWARF,__debug_str,regular,debug"
 446 #define DEBUG_RANGES_SECTION    "__DWARF,__debug_ranges,regular,debug"
 447 #define DEBUG_MACRO_SECTION     "__DWARF,__debug_macro,regular,debug"
 448
 449 #define DEBUG_LTO_INFO_SECTION    "__GNU_DWARF_LTO,__debug_info,regular,debug"
 450 #define DEBUG_LTO_ABBREV_SECTION  "__GNU_DWARF_LTO,__debug_abbrev,regular,debug"
 451 #define DEBUG_LTO_MACINFO_SECTION "__GNU_DWARF_LTO,__debug_macinfo,regular,debug"
 452 #define DEBUG_LTO_LINE_SECTION    "__GNU_DWARF_LTO,__debug_line,regular,debug"
 453 #define DEBUG_LTO_STR_SECTION     "__GNU_DWARF_LTO,__debug_str,regular,debug"
 454 #define DEBUG_LTO_MACRO_SECTION   "__GNU_DWARF_LTO,__debug_macro,regular,debug"
 455
 456 #define TARGET_WANT_DEBUG_PUB_SECTIONS true
 457
 458 /* When generating stabs debugging, use N_BINCL entries.  */
 459
 460 #define DBX_USE_BINCL
 461
 462 /* There is no limit to the length of stabs strings.  */
 463
 464 #define DBX_CONTIN_LENGTH 0
 465
 466 /* gdb needs a null N_SO at the end of each file for scattered loading.  */
 467
 468 #define DBX_OUTPUT_NULL_N_SO_AT_MAIN_SOURCE_FILE_END
 469
 470 /* GCC's definition of 'one_only' is the same as its definition of 'weak'.  */
 471 #define MAKE_DECL_ONE_ONLY(DECL) (DECL_WEAK (DECL) = 1)
 472
 473 /* Mach-O supports 'weak imports', and 'weak definitions' in coalesced
 474    sections.  machopic_select_section ensures that weak variables go in
 475    coalesced sections.  Weak aliases (or any other kind of aliases) are
 476    not supported.  Weak symbols that aren't visible outside the .s file
 477    are not supported.  */
 478 #define ASM_WEAKEN_DECL(FILE, DECL, NAME, ALIAS)                        \
 479   do {                                                                  \
 480     if (ALIAS)                                                          \
 481       {                                                                 \
 482         warning (0, "alias definitions not supported in Mach-O; ignored");      \
 483         break;                                                          \
 484       }                                                                 \
 485                                                                         \
 486     if (! DECL_EXTERNAL (DECL) && TREE_PUBLIC (DECL))                   \
 487       targetm.asm_out.globalize_label (FILE, NAME);                     \
 488     if (DECL_EXTERNAL (DECL))                                           \
 489       fputs ("\t.weak_reference ", FILE);                               \
 490     else if (lookup_attribute ("weak_import", DECL_ATTRIBUTES (DECL)))  \
 491       break;                                                            \
 492     else if (TREE_PUBLIC (DECL))                                        \
 493       fputs ("\t.weak_definition ", FILE);                              \
 494     else                                                                \
 495       break;                                                            \
 496     assemble_name (FILE, NAME);                                         \
 497     fputc ('\n', FILE);                                                 \
 498   } while (0)
 499
 500 /* Darwin has the pthread routines in libSystem, which every program
 501    links to, so there's no need for weak-ness for that.  */
 502 #define GTHREAD_USE_WEAK 0
 503
 504 /* The Darwin linker doesn't want coalesced symbols to appear in
 505    a static archive's table of contents. */
 506 #undef TARGET_WEAK_NOT_IN_ARCHIVE_TOC
 507 #define TARGET_WEAK_NOT_IN_ARCHIVE_TOC 1
 508
 509 /* On Darwin, we don't (at the time of writing) have linkonce sections
 510    with names, so it's safe to make the class data not comdat.  */
 511 #define TARGET_CXX_CLASS_DATA_ALWAYS_COMDAT hook_bool_void_false
 512
 513 /* For efficiency, on Darwin the RTTI information that is always
 514    emitted in the standard C++ library should not be COMDAT.  */
 515 #define TARGET_CXX_LIBRARY_RTTI_COMDAT hook_bool_void_false
 516
 517 /* We make exception information linkonce. */
 518 #undef TARGET_USES_WEAK_UNWIND_INFO
 519 #define TARGET_USES_WEAK_UNWIND_INFO 1
 520
 521 /* We need to use a nonlocal label for the start of an EH frame: the
 522    Darwin linker requires that a coalesced section start with a label.
 523    Unfortunately, it also requires that 'debug' sections don't contain
 524    labels.  */
 525 #undef FRAME_BEGIN_LABEL
 526 #define FRAME_BEGIN_LABEL (for_eh ? "EH_frame" : "Lframe")
 527
 528 /* Emit a label for the FDE corresponding to DECL.  EMPTY means
 529    emit a label for an empty FDE. */
 530 #define TARGET_ASM_EMIT_UNWIND_LABEL darwin_emit_unwind_label
 531
 532 /* Emit a label to separate the exception table.  */
 533 #define TARGET_ASM_EMIT_EXCEPT_TABLE_LABEL darwin_emit_except_table_label
 534
 535 /* Our profiling scheme doesn't LP labels and counter words.  */
 536
 537 #define NO_PROFILE_COUNTERS     1
 538
 539 #undef  INIT_SECTION_ASM_OP
 540 #define INIT_SECTION_ASM_OP ""
 541
 542 #undef  INVOKE__main
 543
 544 #define TARGET_ASM_CONSTRUCTOR  machopic_asm_out_constructor
 545 #define TARGET_ASM_DESTRUCTOR   machopic_asm_out_destructor
 546
 547 /* Always prefix with an underscore.  */
 548
 549 #define USER_LABEL_PREFIX "_"
 550
 551 /* A dummy symbol that will be replaced with the function base name.  */
 552 #define MACHOPIC_FUNCTION_BASE_NAME "<pic base>"
 553
 554 /* Don't output a .file directive.  That is only used by the assembler for
 555    error reporting.  */
 556 #undef  TARGET_ASM_FILE_START_FILE_DIRECTIVE
 557 #define TARGET_ASM_FILE_START_FILE_DIRECTIVE false
 558
 559 #undef  TARGET_ASM_FILE_END
 560 #define TARGET_ASM_FILE_END darwin_file_end
 561
 562 /* Because Mach-O relocations have a counter from 1 to 255 for the
 563    section number they apply to, it is necessary to output all
 564    normal sections before the LTO sections, to make sure that the
 565    sections that may have relocations always have a section number
 566    smaller than 255.  */
 567 #undef  TARGET_ASM_LTO_START
 568 #define TARGET_ASM_LTO_START darwin_asm_lto_start
 569 #undef  TARGET_ASM_LTO_END
 570 #define TARGET_ASM_LTO_END darwin_asm_lto_end
 571
 572 #define ASM_OUTPUT_SKIP(FILE,SIZE)  \
 573   fprintf (FILE, "\t.space " HOST_WIDE_INT_PRINT_UNSIGNED"\n", SIZE)
 574
 575 /* Give ObjC methods pretty symbol names.  */
 576
 577 #undef  OBJC_GEN_METHOD_LABEL
 578 #define OBJC_GEN_METHOD_LABEL(BUF,IS_INST,CLASS_NAME,CAT_NAME,SEL_NAME,NUM) \
 579   do { if (CAT_NAME)                                                    \
 580          sprintf (BUF, "%c[%s(%s) %s]", (IS_INST) ? '-' : '+',          \
 581                   (CLASS_NAME), (CAT_NAME), (SEL_NAME));                \
 582        else                                                             \
 583          sprintf (BUF, "%c[%s %s]", (IS_INST) ? '-' : '+',              \
 584                   (CLASS_NAME), (SEL_NAME));                            \
 585      } while (0)
 586
 587 #undef ASM_DECLARE_OBJECT_NAME
 588 #define ASM_DECLARE_OBJECT_NAME(FILE, NAME, DECL) \
 589         darwin_asm_declare_object_name ((FILE), (NAME), (DECL))
 590
 591 /* The RTTI data (e.g., __ti4name) is common and public (and static),
 592    but it does need to be referenced via indirect PIC data pointers.
 593    The machopic_define_symbol calls are telling the machopic subsystem
 594    that the name *is* defined in this module, so it doesn't need to
 595    make them indirect.  */
 596
 597 #define ASM_DECLARE_FUNCTION_NAME(FILE, NAME, DECL)                     \
 598   do {                                                                  \
 599     const char *xname = NAME;                                           \
 600     if (GET_CODE (XEXP (DECL_RTL (DECL), 0)) != SYMBOL_REF)             \
 601       xname = IDENTIFIER_POINTER (DECL_NAME (DECL));                    \
 602     if (! DECL_WEAK (DECL)                                              \
 603         && ((TREE_STATIC (DECL)                                         \
 604              && (!DECL_COMMON (DECL) || !TREE_PUBLIC (DECL)))           \
 605             || DECL_INITIAL (DECL)))                                    \
 606         machopic_define_symbol (DECL_RTL (DECL));                       \
 607     if ((TREE_STATIC (DECL)                                             \
 608          && (!DECL_COMMON (DECL) || !TREE_PUBLIC (DECL)))               \
 609         || DECL_INITIAL (DECL))                                         \
 610       (* targetm.encode_section_info) (DECL, DECL_RTL (DECL), false);   \
 611     ASM_OUTPUT_FUNCTION_LABEL (FILE, xname, DECL);                      \
 612   } while (0)
 613
 614 #undef TARGET_ASM_DECLARE_CONSTANT_NAME
 615 #define TARGET_ASM_DECLARE_CONSTANT_NAME darwin_asm_declare_constant_name
 616
 617 /* Wrap new method names in quotes so the assembler doesn't gag.
 618    Make Objective-C internal symbols local and in doing this, we need
 619    to accommodate the name mangling done by c++ on file scope locals.  */
 620
 621 int darwin_label_is_anonymous_local_objc_name (const char *name);
 622
 623 #undef  ASM_OUTPUT_LABELREF
 624 #define ASM_OUTPUT_LABELREF(FILE,NAME)                                       \
 625   do {                                                                       \
 626        const char *xname = (NAME);                                           \
 627        if (! strcmp (xname, MACHOPIC_FUNCTION_BASE_NAME))                    \
 628          machopic_output_function_base_name(FILE);                           \
 629        else if (xname[0] == '&' || xname[0] == '*')                          \
 630          {                                                                   \
 631            int len = strlen (xname);                                         \
 632            if (len > 6 && !strcmp ("$stub", xname + len - 5))                \
 633              machopic_validate_stub_or_non_lazy_ptr (xname);                 \
 634            else if (len > 7 && !strcmp ("$stub\"", xname + len - 6))         \
 635              machopic_validate_stub_or_non_lazy_ptr (xname);                 \
 636            else if (len > 14 && !strcmp ("$non_lazy_ptr", xname + len - 13)) \
 637              machopic_validate_stub_or_non_lazy_ptr (xname);                 \
 638            else if (len > 15 && !strcmp ("$non_lazy_ptr\"", xname + len - 14)) \
 639              machopic_validate_stub_or_non_lazy_ptr (xname);                 \
 640            if (xname[1] != '"' && name_needs_quotes (&xname[1]))             \
 641              fprintf (FILE, "\"%s\"", &xname[1]);                            \
 642            else                                                              \
 643              fputs (&xname[1], FILE);                                        \
 644          }                                                                   \
 645        else if (xname[0] == '+' || xname[0] == '-')                          \
 646          fprintf (FILE, "\"%s\"", xname);                                    \
 647        else if (darwin_label_is_anonymous_local_objc_name (xname))           \
 648          fprintf (FILE, "L%s", xname);                                       \
 649        else if (xname[0] != '"' && name_needs_quotes (xname))                \
 650          asm_fprintf (FILE, "\"%U%s\"", xname);                              \
 651        else                                                                  \
 652          asm_fprintf (FILE, "%U%s", xname);                                  \
 653   } while (0)
 654
 655 /* Output before executable code.  */
 656 #undef TEXT_SECTION_ASM_OP
 657 #define TEXT_SECTION_ASM_OP "\t.text"
 658
 659 /* Output before writable data.  */
 660
 661 #undef DATA_SECTION_ASM_OP
 662 #define DATA_SECTION_ASM_OP "\t.data"
 663
 664 #undef  ALIGN_ASM_OP
 665 #define ALIGN_ASM_OP            ".align"
 666
 667 #undef  ASM_OUTPUT_ALIGN
 668 #define ASM_OUTPUT_ALIGN(FILE,LOG)      \
 669   if ((LOG) != 0)                       \
 670     fprintf (FILE, "\t%s\t%d\n", ALIGN_ASM_OP, (LOG))
 671
 672 /* The maximum alignment which the object file format can support in
 673    bits.  For Mach-O, this is 2^15 bytes.  */
 674
 675 #undef  MAX_OFILE_ALIGNMENT
 676 #define MAX_OFILE_ALIGNMENT (0x8000 * 8)
 677
 678 #define L2_MAX_OFILE_ALIGNMENT 15
 679
 680 /*  These are the three variants that emit referenced blank space.  */
 681 #define ASM_OUTPUT_ALIGNED_BSS(FILE, DECL, NAME, SIZE, ALIGN)           \
 682         darwin_output_aligned_bss ((FILE), (DECL), (NAME), (SIZE), (ALIGN))
 683
 684 #undef  ASM_OUTPUT_ALIGNED_DECL_LOCAL
 685 #define ASM_OUTPUT_ALIGNED_DECL_LOCAL(FILE, DECL, NAME, SIZE, ALIGN)    \
 686         darwin_asm_output_aligned_decl_local                            \
 687                                   ((FILE), (DECL), (NAME), (SIZE), (ALIGN))
 688
 689 #undef  ASM_OUTPUT_ALIGNED_DECL_COMMON
 690 #define ASM_OUTPUT_ALIGNED_DECL_COMMON(FILE, DECL, NAME, SIZE, ALIGN)   \
 691         darwin_asm_output_aligned_decl_common                           \
 692                                    ((FILE), (DECL), (NAME), (SIZE), (ALIGN))
 693
 694 /* The generic version, archs should over-ride where required.  */
 695 #define MACHOPIC_NL_SYMBOL_PTR_SECTION ".non_lazy_symbol_pointer"
 696
 697 /* Declare the section variables.  */
 698 #ifndef USED_FOR_TARGET
 699 enum darwin_section_enum {
 700 #define DEF_SECTION(NAME, FLAGS, DIRECTIVE, OBJC) NAME,
 701 #include "darwin-sections.def"
 702 #undef DEF_SECTION
 703   NUM_DARWIN_SECTIONS
 704 };
 705 extern GTY(()) section * darwin_sections[NUM_DARWIN_SECTIONS];
 706 #endif
 707
 708 #undef  TARGET_ASM_SELECT_SECTION
 709 #define TARGET_ASM_SELECT_SECTION machopic_select_section
 710
 711 #undef  TARGET_ASM_FUNCTION_SECTION
 712 #define TARGET_ASM_FUNCTION_SECTION darwin_function_section
 713
 714 #undef  TARGET_ASM_FUNCTION_SWITCHED_TEXT_SECTIONS
 715 #define TARGET_ASM_FUNCTION_SWITCHED_TEXT_SECTIONS \
 716         darwin_function_switched_text_sections
 717
 718 #undef  TARGET_ASM_SELECT_RTX_SECTION
 719 #define TARGET_ASM_SELECT_RTX_SECTION machopic_select_rtx_section
 720 #undef  TARGET_ASM_UNIQUE_SECTION
 721 #define TARGET_ASM_UNIQUE_SECTION darwin_unique_section
 722 #undef  TARGET_ASM_FUNCTION_RODATA_SECTION
 723 #define TARGET_ASM_FUNCTION_RODATA_SECTION default_no_function_rodata_section
 724
 725 #undef  TARGET_ASM_TM_CLONE_TABLE_SECTION
 726 #define TARGET_ASM_TM_CLONE_TABLE_SECTION darwin_tm_clone_table_section
 727
 728 #undef  TARGET_ASM_RELOC_RW_MASK
 729 #define TARGET_ASM_RELOC_RW_MASK machopic_reloc_rw_mask
 730
 731 /* Globalizing directive for a label.  */
 732 #define GLOBAL_ASM_OP "\t.globl "
 733 #define TARGET_ASM_GLOBALIZE_LABEL darwin_globalize_label
 734
 735 /* Emit an assembler directive to set visibility for a symbol.  Used
 736    to support visibility attribute and Darwin's private extern
 737    feature.  */
 738 #undef TARGET_ASM_ASSEMBLE_VISIBILITY
 739 #define TARGET_ASM_ASSEMBLE_VISIBILITY darwin_assemble_visibility
 740
 741 /* Extra attributes for Darwin.  */
 742 #define SUBTARGET_ATTRIBUTE_TABLE                                            \
 743   /* { name, min_len, max_len, decl_req, type_req, fn_type_req,              \
 744        affects_type_identity, handler, exclude } */                          \
 745   { "apple_kext_compatibility", 0, 0, false, true, false, false,             \
 746     darwin_handle_kext_attribute, NULL },                                    \
 747   { "weak_import", 0, 0, true, false, false, false,                          \
 748     darwin_handle_weak_import_attribute, NULL }
 749
 750 /* Make local constant labels linker-visible, so that if one follows a
 751    weak_global constant, ld64 will be able to separate the atoms.  */
 752 #undef ASM_GENERATE_INTERNAL_LABEL
 753 #define ASM_GENERATE_INTERNAL_LABEL(LABEL,PREFIX,NUM)   \
 754   do {                                                  \
 755     if (strcmp ("LC", PREFIX) == 0)                     \
 756       sprintf (LABEL, "*%s%ld", "lC", (long)(NUM));     \
 757     else                                                \
 758       sprintf (LABEL, "*%s%ld", PREFIX, (long)(NUM));   \
 759   } while (0)
 760
 761 #undef TARGET_ASM_MARK_DECL_PRESERVED
 762 #define TARGET_ASM_MARK_DECL_PRESERVED darwin_mark_decl_preserved
 763
 764 /* Set on a symbol with SYMBOL_FLAG_FUNCTION or
 765    MACHO_SYMBOL_FLAG_VARIABLE to indicate that the function or
 766    variable has been defined in this translation unit.
 767    When porting Mach-O to new architectures you need to make
 768    sure these aren't clobbered by the backend.  */
 769
 770 #define MACHO_SYMBOL_FLAG_VARIABLE (SYMBOL_FLAG_MACH_DEP)
 771 #define MACHO_SYMBOL_FLAG_DEFINED ((SYMBOL_FLAG_MACH_DEP) << 1)
 772
 773 /* Set on a symbol to indicate when fix-and-continue style code
 774    generation is being used and the symbol refers to a static symbol
 775    that should be rebound from new instances of a translation unit to
 776    the original instance of the data.  */
 777
 778 #define MACHO_SYMBOL_STATIC ((SYMBOL_FLAG_MACH_DEP) << 2)
 779
 780 /* Symbolic names for various things we might know about a symbol.  */
 781
 782 enum machopic_addr_class {
 783   MACHOPIC_UNDEFINED,
 784   MACHOPIC_DEFINED_DATA,
 785   MACHOPIC_UNDEFINED_DATA,
 786   MACHOPIC_DEFINED_FUNCTION,
 787   MACHOPIC_UNDEFINED_FUNCTION
 788 };
 789
 790 /* Macros defining the various PIC cases.  */
 791
 792 #undef  MACHO_DYNAMIC_NO_PIC_P
 793 #define MACHO_DYNAMIC_NO_PIC_P  (TARGET_MACHO_DYNAMIC_NO_PIC)
 794 #undef  MACHOPIC_INDIRECT
 795 #define MACHOPIC_INDIRECT       (flag_pic || MACHO_DYNAMIC_NO_PIC_P)
 796 #define MACHOPIC_JUST_INDIRECT  (MACHO_DYNAMIC_NO_PIC_P)
 797 #undef  MACHOPIC_PURE
 798 #define MACHOPIC_PURE           (flag_pic && ! MACHO_DYNAMIC_NO_PIC_P)
 799
 800 #undef TARGET_ENCODE_SECTION_INFO
 801 #define TARGET_ENCODE_SECTION_INFO  darwin_encode_section_info
 802 #undef TARGET_STRIP_NAME_ENCODING
 803 #define TARGET_STRIP_NAME_ENCODING  default_strip_name_encoding
 804
 805 #define GEN_BINDER_NAME_FOR_STUB(BUF,STUB,STUB_LENGTH)          \
 806   do {                                                          \
 807     const char *const stub_ = (STUB);                           \
 808     char *buffer_ = (BUF);                                      \
 809     strcpy (buffer_, stub_);                                    \
 810     if (stub_[0] == '"')                                        \
 811       {                                                         \
 812         strcpy (buffer_ + (STUB_LENGTH) - 1, "_binder\"");      \
 813       }                                                         \
 814     else                                                        \
 815       {                                                         \
 816         strcpy (buffer_ + (STUB_LENGTH), "_binder");            \
 817       }                                                         \
 818   } while (0)
 819
 820 #define GEN_SYMBOL_NAME_FOR_SYMBOL(BUF,SYMBOL,SYMBOL_LENGTH)    \
 821   do {                                                          \
 822     const char *const symbol_ = (SYMBOL);                       \
 823     char *buffer_ = (BUF);                                      \
 824     if (name_needs_quotes (symbol_) && symbol_[0] != '"')       \
 825       {                                                         \
 826           sprintf (buffer_, "\"%s\"", symbol_);                 \
 827       }                                                         \
 828     else                                                        \
 829       {                                                         \
 830         strcpy (buffer_, symbol_);                              \
 831       }                                                         \
 832   } while (0)
 833
 834 /* Given a symbol name string, create the lazy pointer version
 835    of the symbol name.  */
 836
 837 #define GEN_LAZY_PTR_NAME_FOR_SYMBOL(BUF,SYMBOL,SYMBOL_LENGTH)  \
 838   do {                                                          \
 839     const char *symbol_ = (SYMBOL);                             \
 840     char *buffer_ = (BUF);                                      \
 841     if (symbol_[0] == '"')                                      \
 842       {                                                         \
 843         strcpy (buffer_, "\"L");                                \
 844         strcpy (buffer_ + 2, symbol_ + 1);                      \
 845         strcpy (buffer_ + (SYMBOL_LENGTH), "$lazy_ptr\"");      \
 846       }                                                         \
 847     else if (name_needs_quotes (symbol_))                       \
 848       {                                                         \
 849         strcpy (buffer_, "\"L");                                \
 850         strcpy (buffer_ + 2, symbol_);                          \
 851         strcpy (buffer_ + (SYMBOL_LENGTH) + 2, "$lazy_ptr\"");  \
 852       }                                                         \
 853     else                                                        \
 854       {                                                         \
 855         strcpy (buffer_, "L");                                  \
 856         strcpy (buffer_ + 1, symbol_);                          \
 857         strcpy (buffer_ + (SYMBOL_LENGTH) + 1, "$lazy_ptr");    \
 858       }                                                         \
 859   } while (0)
 860
 861 #define EH_FRAME_SECTION_NAME   "__TEXT"
 862 #define EH_FRAME_SECTION_ATTR ",coalesced,no_toc+strip_static_syms+live_support"
 863
 864 #undef ASM_PREFERRED_EH_DATA_FORMAT
 865 #define ASM_PREFERRED_EH_DATA_FORMAT(CODE,GLOBAL)  \
 866   (((CODE) == 2 && (GLOBAL) == 1) \
 867    ? (DW_EH_PE_pcrel | DW_EH_PE_indirect | DW_EH_PE_sdata4) : \
 868      ((CODE) == 1 || (GLOBAL) == 0) ? DW_EH_PE_pcrel : DW_EH_PE_absptr)
 869
 870 #define ASM_OUTPUT_DWARF_DELTA(FILE,SIZE,LABEL1,LABEL2)  \
 871   darwin_asm_output_dwarf_delta (FILE, SIZE, LABEL1, LABEL2, 0)
 872
 873 #define ASM_OUTPUT_DWARF_OFFSET(FILE,SIZE,LABEL,OFFSET,BASE)  \
 874   darwin_asm_output_dwarf_offset (FILE, SIZE, LABEL, OFFSET, BASE)
 875
 876 #define ASM_MAYBE_OUTPUT_ENCODED_ADDR_RTX(ASM_OUT_FILE, ENCODING, SIZE, ADDR, DONE)     \
 877       if (ENCODING == ASM_PREFERRED_EH_DATA_FORMAT (2, 1)) {                            \
 878         darwin_non_lazy_pcrel (ASM_OUT_FILE, ADDR);                                     \
 879         goto DONE;                                                                      \
 880       }
 881
 882 /* Experimentally, putting jump tables in text is faster on SPEC.
 883    Also this is needed for correctness for coalesced functions.  */
 884
 885 #ifndef JUMP_TABLES_IN_TEXT_SECTION
 886 #define JUMP_TABLES_IN_TEXT_SECTION 1
 887 #endif
 888
 889 #define TARGET_TERMINATE_DW2_EH_FRAME_INFO false
 890
 891 #define TARGET_ASM_INIT_SECTIONS darwin_init_sections
 892 #undef TARGET_ASM_NAMED_SECTION
 893 #define TARGET_ASM_NAMED_SECTION darwin_asm_named_section
 894
 895 #define DARWIN_REGISTER_TARGET_PRAGMAS()                        \
 896   do {                                                          \
 897     if (!flag_preprocess_only)                                  \
 898       cpp_register_pragma (parse_in, NULL, "mark",              \
 899                            darwin_pragma_ignore, false);        \
 900     c_register_pragma (0, "options", darwin_pragma_options);    \
 901     c_register_pragma (0, "segment", darwin_pragma_ignore);     \
 902     c_register_pragma (0, "unused", darwin_pragma_unused);      \
 903     c_register_pragma (0, "ms_struct", darwin_pragma_ms_struct); \
 904   } while (0)
 905
 906 #undef ASM_APP_ON
 907 #define ASM_APP_ON ""
 908 #undef ASM_APP_OFF
 909 #define ASM_APP_OFF ""
 910
 911 void darwin_register_frameworks (const char *, const char *, int);
 912 void darwin_register_objc_includes (const char *, const char *, int);
 913 #define TARGET_EXTRA_PRE_INCLUDES darwin_register_objc_includes
 914 #define TARGET_EXTRA_INCLUDES darwin_register_frameworks
 915
 916 void add_framework_path (char *);
 917 #define TARGET_OPTF add_framework_path
 918
 919 #define TARGET_POSIX_IO
 920
 921 #define WINT_TYPE "int"
 922
 923 /* Every program on darwin links against libSystem which contains the pthread
 924    routines, so there's no need to explicitly call out when doing threaded
 925    work.  */
 926
 927 #undef GOMP_SELF_SPECS
 928 #define GOMP_SELF_SPECS ""
 929 #undef GTM_SELF_SPECS
 930 #define GTM_SELF_SPECS ""
 931
 932 /* Darwin disables section anchors by default.
 933    They should be enabled per arch where support exists in that arch.  */
 934 #define TARGET_ASM_OUTPUT_ANCHOR NULL
 935 #define DARWIN_SECTION_ANCHORS 0
 936
 937 #define HAVE_ENABLE_EXECUTE_STACK
 938
 939 /* For Apple KEXTs, we make the constructors return this to match gcc
 940    2.95.  */
 941 #define TARGET_CXX_CDTOR_RETURNS_THIS (darwin_kextabi_p)
 942 #define TARGET_KEXTABI flag_apple_kext
 943
 944 /* We have target-specific builtins.  */
 945 #define SUBTARGET_FOLD_BUILTIN darwin_fold_builtin
 946
 947 #define TARGET_N_FORMAT_TYPES 1
 948 #define TARGET_FORMAT_TYPES darwin_additional_format_types
 949
 950 #ifndef USED_FOR_TARGET
 951 extern void darwin_driver_init (unsigned int *,struct cl_decoded_option **);
 952 #define GCC_DRIVER_HOST_INITIALIZATION \
 953   darwin_driver_init (&decoded_options_count, &decoded_options)
 954 #endif
 955
 956 /* The Apple assembler and linker do not support constructor priorities.  */
 957 #undef SUPPORTS_INIT_PRIORITY
 958 #define SUPPORTS_INIT_PRIORITY 0
 959
 960 /* When building cross-compilers (and native crosses) we shall default to
 961    providing an osx-version-min of this unless overridden by the User.
 962    10.5 is the only version that fully supports all our archs so that's the
 963    fall-back default.  */
 964 #define DEF_MIN_OSX_VERSION "10.5"
 965
 966 /* Later versions of ld64 support coalescing weak code/data without requiring
 967    that they be placed in specially identified sections.  This is the earliest
 968    _tested_ version known to support this so far.  */
 969 #define MIN_LD64_NO_COAL_SECTS "236.4"
 970
 971 #ifndef LD64_VERSION
 972 #define LD64_VERSION "85.2"
 973 #else
 974 #define DEF_LD64 LD64_VERSION
 975 #endif
 976
 977 #endif /* CONFIG_DARWIN_H */