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