gcc/config/darwin.h

   1 /* Target definitions for Darwin (Mac OS X) systems.
   2    Copyright (C) 1989-2017 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     %{fcilkplus:%:include(libcilkrts.spec)%(link_cilkrts)}\
 189     %{fgnu-tm: \
 190       %{static|static-libgcc|static-libstdc++|static-libgfortran: libitm.a%s; : -litm } } \
 191     %{!nostdlib:%{!nodefaultlibs:\
 192       %{%:sanitize(address): -lasan } \
 193       %{%:sanitize(undefined): -lubsan } \
 194       %(link_ssp) \
 195       " DARWIN_EXPORT_DYNAMIC " %<rdynamic \
 196       %(link_gcc_c_sequence) \
 197     }}\
 198     %{!nostdlib:%{!nostartfiles:%E}} %{T*} %{F*} }}}}}}}"
 199
 200 #define DSYMUTIL "\ndsymutil"
 201
 202 #define DSYMUTIL_SPEC \
 203    "%{!fdump=*:%{!fsyntax-only:%{!c:%{!M:%{!MM:%{!E:%{!S:\
 204     %{v} \
 205     %{gdwarf-2:%{!gstabs*:%{%:debug-level-gt(0): -idsym}}}\
 206     %{.c|.cc|.C|.cpp|.cp|.c++|.cxx|.CPP|.m|.mm: \
 207     %{gdwarf-2:%{!gstabs*:%{%:debug-level-gt(0): -dsym}}}}}}}}}}}"
 208
 209 #define LINK_COMMAND_SPEC LINK_COMMAND_SPEC_A DSYMUTIL_SPEC
 210
 211 /* Tell collect2 to run dsymutil for us as necessary.  */
 212 #define COLLECT_RUN_DSYMUTIL 1
 213
 214 /* We only want one instance of %G, since libSystem (Darwin's -lc) does not depend
 215    on libgcc.  */
 216 #undef  LINK_GCC_C_SEQUENCE_SPEC
 217 #define LINK_GCC_C_SEQUENCE_SPEC "%G %L"
 218
 219 /* ld64 supports a sysroot, it just has a different name and there's no easy
 220    way to check for it at config time.  */
 221 #undef HAVE_LD_SYSROOT
 222 #define HAVE_LD_SYSROOT 1
 223 /* It seems the only (working) way to get a space after %R is to append a
 224    dangling '/'.  */
 225 #define SYSROOT_SPEC "%{!isysroot*:-syslibroot %R/ }"
 226
 227 /* Do the same as clang, for now, and insert the sysroot for ld when an
 228    isysroot is specified.  */
 229 #define LINK_SYSROOT_SPEC "%{isysroot*:-syslibroot %*}"
 230
 231 /* Suppress the addition of extra prefix paths when a sysroot is in use.  */
 232 #define STANDARD_STARTFILE_PREFIX_1 ""
 233 #define STANDARD_STARTFILE_PREFIX_2 ""
 234
 235 #define DARWIN_PIE_SPEC "%{fpie|pie|fPIE:}"
 236
 237 /* Please keep the random linker options in alphabetical order (modulo
 238    'Z' and 'no' prefixes). Note that options taking arguments may appear
 239    multiple times on a command line with different arguments each time,
 240    so put a * after their names so all of them get passed.  */
 241 #define LINK_SPEC  \
 242   "%{static}%{!static:-dynamic} \
 243    %:remove-outfile(-ldl) \
 244    %:remove-outfile(-lm) \
 245    %:remove-outfile(-lpthread) \
 246    %{fgnu-runtime: %{static|static-libgcc: \
 247                      %:replace-outfile(-lobjc libobjc-gnu.a%s); \
 248                     :%:replace-outfile(-lobjc -lobjc-gnu ) } }\
 249    %{static|static-libgcc|static-libgfortran:%:replace-outfile(-lgfortran libgfortran.a%s)}\
 250    %{static|static-libgcc|static-libstdc++|static-libgfortran:%:replace-outfile(-lgomp libgomp.a%s)}\
 251    %{static|static-libgcc|static-libstdc++:%:replace-outfile(-lstdc++ libstdc++.a%s)}\
 252    %{!Zdynamiclib: \
 253      %{Zforce_cpusubtype_ALL:-arch %(darwin_arch) -force_cpusubtype_ALL} \
 254      %{!Zforce_cpusubtype_ALL:-arch %(darwin_subarch)} \
 255      %{Zbundle:-bundle} \
 256      %{Zbundle_loader*:-bundle_loader %*} \
 257      %{client_name*} \
 258      %{compatibility_version*:%e-compatibility_version only allowed with -dynamiclib\
 259 } \
 260      %{current_version*:%e-current_version only allowed with -dynamiclib} \
 261      %{Zforce_flat_namespace:-force_flat_namespace} \
 262      %{Zinstall_name*:%e-install_name only allowed with -dynamiclib} \
 263      %{keep_private_externs} \
 264      %{private_bundle} \
 265     } \
 266    %{Zdynamiclib: -dylib \
 267      %{Zbundle:%e-bundle not allowed with -dynamiclib} \
 268      %{Zbundle_loader*:%e-bundle_loader not allowed with -dynamiclib} \
 269      %{client_name*:%e-client_name not allowed with -dynamiclib} \
 270      %{compatibility_version*:-dylib_compatibility_version %*} \
 271      %{current_version*:-dylib_current_version %*} \
 272      %{Zforce_cpusubtype_ALL:-arch %(darwin_arch)} \
 273      %{!Zforce_cpusubtype_ALL: -arch %(darwin_subarch)} \
 274      %{Zforce_flat_namespace:%e-force_flat_namespace not allowed with -dynamiclib} \
 275      %{Zinstall_name*:-dylib_install_name %*} \
 276      %{keep_private_externs:%e-keep_private_externs not allowed with -dynamiclib} \
 277      %{private_bundle:%e-private_bundle not allowed with -dynamiclib} \
 278     } \
 279    %{Zall_load:-all_load} \
 280    %{Zallowable_client*:-allowable_client %*} \
 281    %{Zbind_at_load:-bind_at_load} \
 282    %{Zarch_errors_fatal:-arch_errors_fatal} \
 283    %{Zdead_strip:-dead_strip} \
 284    %{Zno_dead_strip_inits_and_terms:-no_dead_strip_inits_and_terms} \
 285    %{Zdylib_file*:-dylib_file %*} \
 286    %{Zdynamic:-dynamic}\
 287    %{Zexported_symbols_list*:-exported_symbols_list %*} \
 288    %{Zflat_namespace:-flat_namespace} \
 289    %{headerpad_max_install_names} \
 290    %{Zimage_base*:-image_base %*} \
 291    %{Zinit*:-init %*} \
 292    %{mmacosx-version-min=*:-macosx_version_min %*} \
 293    %{nomultidefs} \
 294    %{Zmulti_module:-multi_module} %{Zsingle_module:-single_module} \
 295    %{Zmultiply_defined*:-multiply_defined %*} \
 296    %{!Zmultiply_defined*:%{shared-libgcc: \
 297      %:version-compare(< 10.5 mmacosx-version-min= -multiply_defined) \
 298      %:version-compare(< 10.5 mmacosx-version-min= suppress)}} \
 299    %{Zmultiplydefinedunused*:-multiply_defined_unused %*} \
 300    " DARWIN_PIE_SPEC " \
 301    %{prebind} %{noprebind} %{nofixprebinding} %{prebind_all_twolevel_modules} \
 302    %{read_only_relocs} \
 303    %{sectcreate*} %{sectorder*} %{seg1addr*} %{segprot*} \
 304    %{Zsegaddr*:-segaddr %*} \
 305    %{Zsegs_read_only_addr*:-segs_read_only_addr %*} \
 306    %{Zsegs_read_write_addr*:-segs_read_write_addr %*} \
 307    %{Zseg_addr_table*: -seg_addr_table %*} \
 308    %{Zfn_seg_addr_table_filename*:-seg_addr_table_filename %*} \
 309    %{sub_library*} %{sub_umbrella*} \
 310    " LINK_SYSROOT_SPEC " \
 311    %{twolevel_namespace} %{twolevel_namespace_hints} \
 312    %{Zumbrella*: -umbrella %*} \
 313    %{undefined*} \
 314    %{Zunexported_symbols_list*:-unexported_symbols_list %*} \
 315    %{Zweak_reference_mismatches*:-weak_reference_mismatches %*} \
 316    %{!Zweak_reference_mismatches*:-weak_reference_mismatches non-weak} \
 317    %{X} \
 318    %{y*} \
 319    %{w} \
 320    %{pagezero_size*} %{segs_read_*} %{seglinkedit} %{noseglinkedit}  \
 321    %{sectalign*} %{sectobjectsymbols*} %{segcreate*} %{whyload} \
 322    %{whatsloaded} %{dylinker_install_name*} \
 323    %{dylinker} %{Mach} "
 324
 325
 326 /* Machine dependent libraries.  */
 327
 328 #define LIB_SPEC "%{!static:-lSystem}"
 329
 330 /* Support -mmacosx-version-min by supplying different (stub) libgcc_s.dylib
 331    libraries to link against, and by not linking against libgcc_s on
 332    earlier-than-10.3.9.
 333
 334    Note that by default, -lgcc_eh is not linked against!  This is
 335    because in a future version of Darwin the EH frame information may
 336    be in a new format, or the fallback routine might be changed; if
 337    you want to explicitly link against the static version of those
 338    routines, because you know you don't need to unwind through system
 339    libraries, you need to explicitly say -static-libgcc.
 340
 341    If it is linked against, it has to be before -lgcc, because it may
 342    need symbols from -lgcc.  */
 343 #undef REAL_LIBGCC_SPEC
 344 #define REAL_LIBGCC_SPEC                                                   \
 345    "%{static-libgcc|static: -lgcc_eh -lgcc;                                \
 346       shared-libgcc|fexceptions|fgnu-runtime:                              \
 347        %:version-compare(!> 10.5 mmacosx-version-min= -lgcc_s.10.4)        \
 348        %:version-compare(>< 10.5 10.6 mmacosx-version-min= -lgcc_s.10.5)   \
 349        %:version-compare(!> 10.5 mmacosx-version-min= -lgcc_ext.10.4)      \
 350        %:version-compare(>= 10.5 mmacosx-version-min= -lgcc_ext.10.5)      \
 351        -lgcc ;                                                             \
 352       :%:version-compare(>< 10.3.9 10.5 mmacosx-version-min= -lgcc_s.10.4) \
 353        %:version-compare(>< 10.5 10.6 mmacosx-version-min= -lgcc_s.10.5)   \
 354        %:version-compare(!> 10.5 mmacosx-version-min= -lgcc_ext.10.4)      \
 355        %:version-compare(>= 10.5 mmacosx-version-min= -lgcc_ext.10.5)      \
 356        -lgcc }"
 357
 358 /* We specify crt0.o as -lcrt0.o so that ld will search the library path.
 359
 360    crt3.o provides __cxa_atexit on systems that don't have it.  Since
 361    it's only used with C++, which requires passing -shared-libgcc, key
 362    off that to avoid unnecessarily adding a destructor to every
 363    powerpc program built.  */
 364
 365 #undef  STARTFILE_SPEC
 366 #define STARTFILE_SPEC                                                      \
 367   "%{Zdynamiclib: %(darwin_dylib1) %{fgnu-tm: -lcrttms.o}}                  \
 368    %{!Zdynamiclib:%{Zbundle:%{!static:                                      \
 369         %:version-compare(< 10.6 mmacosx-version-min= -lbundle1.o)          \
 370         %{fgnu-tm: -lcrttms.o}}}                                            \
 371      %{!Zbundle:%{pg:%{static:-lgcrt0.o}                                    \
 372                      %{!static:%{object:-lgcrt0.o}                          \
 373                                %{!object:%{preload:-lgcrt0.o}               \
 374                                  %{!preload:-lgcrt1.o                       \
 375                                  %:version-compare(>= 10.8 mmacosx-version-min= -no_new_main) \
 376                                  %(darwin_crt2)}}}}    \
 377                 %{!pg:%{static:-lcrt0.o}                                    \
 378                       %{!static:%{object:-lcrt0.o}                          \
 379                                 %{!object:%{preload:-lcrt0.o}               \
 380                                   %{!preload: %(darwin_crt1)                \
 381                                               %(darwin_crt2)}}}}}}          \
 382   %{shared-libgcc:%:version-compare(< 10.5 mmacosx-version-min= crt3.o%s)}"
 383
 384 /* We want a destructor last in the list.  */
 385 #define TM_DESTRUCTOR "%{fgnu-tm: -lcrttme.o}"
 386 #define ENDFILE_SPEC TM_DESTRUCTOR
 387
 388 #define DARWIN_EXTRA_SPECS                                              \
 389   { "darwin_crt1", DARWIN_CRT1_SPEC },                                  \
 390   { "darwin_dylib1", DARWIN_DYLIB1_SPEC },
 391
 392 #define DARWIN_DYLIB1_SPEC                                              \
 393   "%:version-compare(!> 10.5 mmacosx-version-min= -ldylib1.o)           \
 394    %:version-compare(>< 10.5 10.6 mmacosx-version-min= -ldylib1.10.5.o)"
 395
 396 #define DARWIN_CRT1_SPEC                                                \
 397   "%:version-compare(!> 10.5 mmacosx-version-min= -lcrt1.o)             \
 398    %:version-compare(>< 10.5 10.6 mmacosx-version-min= -lcrt1.10.5.o)   \
 399    %:version-compare(>< 10.6 10.8 mmacosx-version-min= -lcrt1.10.6.o)   \
 400    %{fgnu-tm: -lcrttms.o}"
 401
 402 #ifdef HAVE_AS_MMACOSX_VERSION_MIN_OPTION
 403 /* Emit macosx version (but only major).  */
 404 #define ASM_MMACOSX_VERSION_MIN_SPEC \
 405   " %{asm_macosx_version_min=*: -mmacosx-version-min=%*} %<asm_macosx_version_min=*"
 406 #else
 407 #define ASM_MMACOSX_VERSION_MIN_SPEC " %<asm_macosx_version_min=*"
 408 #endif
 409
 410 /* When we detect that we're cctools or llvm as, we need to insert the right
 411    additional options.  */
 412 #if HAVE_GNU_AS
 413 #define ASM_OPTIONS ""
 414 #else
 415 #define ASM_OPTIONS "%{v} %{w:-W} %{I*}"
 416 #endif
 417
 418 /* Default Darwin ASM_SPEC, very simple. */
 419 #define ASM_SPEC "-arch %(darwin_arch) \
 420   " ASM_OPTIONS " \
 421   %{Zforce_cpusubtype_ALL:-force_cpusubtype_ALL} \
 422   %{static}" ASM_MMACOSX_VERSION_MIN_SPEC
 423
 424 /* Default ASM_DEBUG_SPEC.  Darwin's as cannot currently produce dwarf
 425    debugging data.  */
 426
 427 #define ASM_DEBUG_SPEC  "%{g*:%{%:debug-level-gt(0):%{!gdwarf*:--gstabs}}}"
 428
 429 /* We still allow output of STABS if the assembler supports it.  */
 430 #ifdef HAVE_AS_STABS_DIRECTIVE
 431 #define DBX_DEBUGGING_INFO 1
 432 #define PREFERRED_DEBUGGING_TYPE DBX_DEBUG
 433 #endif
 434
 435 #define DWARF2_DEBUGGING_INFO 1
 436
 437 #define DEBUG_FRAME_SECTION     "__DWARF,__debug_frame,regular,debug"
 438 #define DEBUG_INFO_SECTION      "__DWARF,__debug_info,regular,debug"
 439 #define DEBUG_ABBREV_SECTION    "__DWARF,__debug_abbrev,regular,debug"
 440 #define DEBUG_ARANGES_SECTION   "__DWARF,__debug_aranges,regular,debug"
 441 #define DEBUG_MACINFO_SECTION   "__DWARF,__debug_macinfo,regular,debug"
 442 #define DEBUG_LINE_SECTION      "__DWARF,__debug_line,regular,debug"
 443 #define DEBUG_LOC_SECTION       "__DWARF,__debug_loc,regular,debug"
 444 #define DEBUG_PUBNAMES_SECTION  "__DWARF,__debug_pubnames,regular,debug"
 445 #define DEBUG_PUBTYPES_SECTION  "__DWARF,__debug_pubtypes,regular,debug"
 446 #define DEBUG_STR_SECTION       "__DWARF,__debug_str,regular,debug"
 447 #define DEBUG_RANGES_SECTION    "__DWARF,__debug_ranges,regular,debug"
 448 #define DEBUG_MACRO_SECTION     "__DWARF,__debug_macro,regular,debug"
 449
 450 #define DEBUG_LTO_INFO_SECTION    "__GNU_DWARF_LTO,__debug_info,regular,debug"
 451 #define DEBUG_LTO_ABBREV_SECTION  "__GNU_DWARF_LTO,__debug_abbrev,regular,debug"
 452 #define DEBUG_LTO_MACINFO_SECTION "__GNU_DWARF_LTO,__debug_macinfo,regular,debug"
 453 #define DEBUG_LTO_LINE_SECTION    "__GNU_DWARF_LTO,__debug_line,regular,debug"
 454 #define DEBUG_LTO_STR_SECTION     "__GNU_DWARF_LTO,__debug_str,regular,debug"
 455 #define DEBUG_LTO_MACRO_SECTION   "__GNU_DWARF_LTO,__debug_macro,regular,debug"
 456
 457 #define TARGET_WANT_DEBUG_PUB_SECTIONS true
 458
 459 /* When generating stabs debugging, use N_BINCL entries.  */
 460
 461 #define DBX_USE_BINCL
 462
 463 /* There is no limit to the length of stabs strings.  */
 464
 465 #define DBX_CONTIN_LENGTH 0
 466
 467 /* gdb needs a null N_SO at the end of each file for scattered loading.  */
 468
 469 #define DBX_OUTPUT_NULL_N_SO_AT_MAIN_SOURCE_FILE_END
 470
 471 /* GCC's definition of 'one_only' is the same as its definition of 'weak'.  */
 472 #define MAKE_DECL_ONE_ONLY(DECL) (DECL_WEAK (DECL) = 1)
 473
 474 /* Mach-O supports 'weak imports', and 'weak definitions' in coalesced
 475    sections.  machopic_select_section ensures that weak variables go in
 476    coalesced sections.  Weak aliases (or any other kind of aliases) are
 477    not supported.  Weak symbols that aren't visible outside the .s file
 478    are not supported.  */
 479 #define ASM_WEAKEN_DECL(FILE, DECL, NAME, ALIAS)                        \
 480   do {                                                                  \
 481     if (ALIAS)                                                          \
 482       {                                                                 \
 483         warning (0, "alias definitions not supported in Mach-O; ignored");      \
 484         break;                                                          \
 485       }                                                                 \
 486                                                                         \
 487     if (! DECL_EXTERNAL (DECL) && TREE_PUBLIC (DECL))                   \
 488       targetm.asm_out.globalize_label (FILE, NAME);                     \
 489     if (DECL_EXTERNAL (DECL))                                           \
 490       fputs ("\t.weak_reference ", FILE);                               \
 491     else if (lookup_attribute ("weak_import", DECL_ATTRIBUTES (DECL)))  \
 492       break;                                                            \
 493     else if (TREE_PUBLIC (DECL))                                        \
 494       fputs ("\t.weak_definition ", FILE);                              \
 495     else                                                                \
 496       break;                                                            \
 497     assemble_name (FILE, NAME);                                         \
 498     fputc ('\n', FILE);                                                 \
 499   } while (0)
 500
 501 /* Darwin has the pthread routines in libSystem, which every program
 502    links to, so there's no need for weak-ness for that.  */
 503 #define GTHREAD_USE_WEAK 0
 504
 505 /* The Darwin linker doesn't want coalesced symbols to appear in
 506    a static archive's table of contents. */
 507 #undef TARGET_WEAK_NOT_IN_ARCHIVE_TOC
 508 #define TARGET_WEAK_NOT_IN_ARCHIVE_TOC 1
 509
 510 /* On Darwin, we don't (at the time of writing) have linkonce sections
 511    with names, so it's safe to make the class data not comdat.  */
 512 #define TARGET_CXX_CLASS_DATA_ALWAYS_COMDAT hook_bool_void_false
 513
 514 /* For efficiency, on Darwin the RTTI information that is always
 515    emitted in the standard C++ library should not be COMDAT.  */
 516 #define TARGET_CXX_LIBRARY_RTTI_COMDAT hook_bool_void_false
 517
 518 /* We make exception information linkonce. */
 519 #undef TARGET_USES_WEAK_UNWIND_INFO
 520 #define TARGET_USES_WEAK_UNWIND_INFO 1
 521
 522 /* We need to use a nonlocal label for the start of an EH frame: the
 523    Darwin linker requires that a coalesced section start with a label.
 524    Unfortunately, it also requires that 'debug' sections don't contain
 525    labels.  */
 526 #undef FRAME_BEGIN_LABEL
 527 #define FRAME_BEGIN_LABEL (for_eh ? "EH_frame" : "Lframe")
 528
 529 /* Emit a label for the FDE corresponding to DECL.  EMPTY means
 530    emit a label for an empty FDE. */
 531 #define TARGET_ASM_EMIT_UNWIND_LABEL darwin_emit_unwind_label
 532
 533 /* Emit a label to separate the exception table.  */
 534 #define TARGET_ASM_EMIT_EXCEPT_TABLE_LABEL darwin_emit_except_table_label
 535
 536 /* Our profiling scheme doesn't LP labels and counter words.  */
 537
 538 #define NO_PROFILE_COUNTERS     1
 539
 540 #undef  INIT_SECTION_ASM_OP
 541 #define INIT_SECTION_ASM_OP ""
 542
 543 #undef  INVOKE__main
 544
 545 #define TARGET_ASM_CONSTRUCTOR  machopic_asm_out_constructor
 546 #define TARGET_ASM_DESTRUCTOR   machopic_asm_out_destructor
 547
 548 /* Always prefix with an underscore.  */
 549
 550 #define USER_LABEL_PREFIX "_"
 551
 552 /* A dummy symbol that will be replaced with the function base name.  */
 553 #define MACHOPIC_FUNCTION_BASE_NAME "<pic base>"
 554
 555 /* Don't output a .file directive.  That is only used by the assembler for
 556    error reporting.  */
 557 #undef  TARGET_ASM_FILE_START_FILE_DIRECTIVE
 558 #define TARGET_ASM_FILE_START_FILE_DIRECTIVE false
 559
 560 #undef  TARGET_ASM_FILE_END
 561 #define TARGET_ASM_FILE_END darwin_file_end
 562
 563 /* Because Mach-O relocations have a counter from 1 to 255 for the
 564    section number they apply to, it is necessary to output all
 565    normal sections before the LTO sections, to make sure that the
 566    sections that may have relocations always have a section number
 567    smaller than 255.  */
 568 #undef  TARGET_ASM_LTO_START
 569 #define TARGET_ASM_LTO_START darwin_asm_lto_start
 570 #undef  TARGET_ASM_LTO_END
 571 #define TARGET_ASM_LTO_END darwin_asm_lto_end
 572
 573 #define ASM_OUTPUT_SKIP(FILE,SIZE)  \
 574   fprintf (FILE, "\t.space " HOST_WIDE_INT_PRINT_UNSIGNED"\n", SIZE)
 575
 576 /* Give ObjC methods pretty symbol names.  */
 577
 578 #undef  OBJC_GEN_METHOD_LABEL
 579 #define OBJC_GEN_METHOD_LABEL(BUF,IS_INST,CLASS_NAME,CAT_NAME,SEL_NAME,NUM) \
 580   do { if (CAT_NAME)                                                    \
 581          sprintf (BUF, "%c[%s(%s) %s]", (IS_INST) ? '-' : '+',          \
 582                   (CLASS_NAME), (CAT_NAME), (SEL_NAME));                \
 583        else                                                             \
 584          sprintf (BUF, "%c[%s %s]", (IS_INST) ? '-' : '+',              \
 585                   (CLASS_NAME), (SEL_NAME));                            \
 586      } while (0)
 587
 588 #undef ASM_DECLARE_OBJECT_NAME
 589 #define ASM_DECLARE_OBJECT_NAME(FILE, NAME, DECL) \
 590         darwin_asm_declare_object_name ((FILE), (NAME), (DECL))
 591
 592 /* The RTTI data (e.g., __ti4name) is common and public (and static),
 593    but it does need to be referenced via indirect PIC data pointers.
 594    The machopic_define_symbol calls are telling the machopic subsystem
 595    that the name *is* defined in this module, so it doesn't need to
 596    make them indirect.  */
 597
 598 #define ASM_DECLARE_FUNCTION_NAME(FILE, NAME, DECL)                     \
 599   do {                                                                  \
 600     const char *xname = NAME;                                           \
 601     if (GET_CODE (XEXP (DECL_RTL (DECL), 0)) != SYMBOL_REF)             \
 602       xname = IDENTIFIER_POINTER (DECL_NAME (DECL));                    \
 603     if (! DECL_WEAK (DECL)                                              \
 604         && ((TREE_STATIC (DECL)                                         \
 605              && (!DECL_COMMON (DECL) || !TREE_PUBLIC (DECL)))           \
 606             || DECL_INITIAL (DECL)))                                    \
 607         machopic_define_symbol (DECL_RTL (DECL));                       \
 608     if ((TREE_STATIC (DECL)                                             \
 609          && (!DECL_COMMON (DECL) || !TREE_PUBLIC (DECL)))               \
 610         || DECL_INITIAL (DECL))                                         \
 611       (* targetm.encode_section_info) (DECL, DECL_RTL (DECL), false);   \
 612     ASM_OUTPUT_FUNCTION_LABEL (FILE, xname, DECL);                      \
 613   } while (0)
 614
 615 #undef TARGET_ASM_DECLARE_CONSTANT_NAME
 616 #define TARGET_ASM_DECLARE_CONSTANT_NAME darwin_asm_declare_constant_name
 617
 618 /* Wrap new method names in quotes so the assembler doesn't gag.
 619    Make Objective-C internal symbols local and in doing this, we need
 620    to accommodate the name mangling done by c++ on file scope locals.  */
 621
 622 int darwin_label_is_anonymous_local_objc_name (const char *name);
 623
 624 #undef  ASM_OUTPUT_LABELREF
 625 #define ASM_OUTPUT_LABELREF(FILE,NAME)                                       \
 626   do {                                                                       \
 627        const char *xname = (NAME);                                           \
 628        if (! strcmp (xname, MACHOPIC_FUNCTION_BASE_NAME))                    \
 629          machopic_output_function_base_name(FILE);                           \
 630        else if (xname[0] == '&' || xname[0] == '*')                          \
 631          {                                                                   \
 632            int len = strlen (xname);                                         \
 633            if (len > 6 && !strcmp ("$stub", xname + len - 5))                \
 634              machopic_validate_stub_or_non_lazy_ptr (xname);                 \
 635            else if (len > 7 && !strcmp ("$stub\"", xname + len - 6))         \
 636              machopic_validate_stub_or_non_lazy_ptr (xname);                 \
 637            else if (len > 14 && !strcmp ("$non_lazy_ptr", xname + len - 13)) \
 638              machopic_validate_stub_or_non_lazy_ptr (xname);                 \
 639            else if (len > 15 && !strcmp ("$non_lazy_ptr\"", xname + len - 14)) \
 640              machopic_validate_stub_or_non_lazy_ptr (xname);                 \
 641            if (xname[1] != '"' && name_needs_quotes (&xname[1]))             \
 642              fprintf (FILE, "\"%s\"", &xname[1]);                            \
 643            else                                                              \
 644              fputs (&xname[1], FILE);                                        \
 645          }                                                                   \
 646        else if (xname[0] == '+' || xname[0] == '-')                          \
 647          fprintf (FILE, "\"%s\"", xname);                                    \
 648        else if (darwin_label_is_anonymous_local_objc_name (xname))           \
 649          fprintf (FILE, "L%s", xname);                                       \
 650        else if (xname[0] != '"' && name_needs_quotes (xname))                \
 651          asm_fprintf (FILE, "\"%U%s\"", xname);                              \
 652        else                                                                  \
 653          asm_fprintf (FILE, "%U%s", xname);                                  \
 654   } while (0)
 655
 656 /* Output before executable code.  */
 657 #undef TEXT_SECTION_ASM_OP
 658 #define TEXT_SECTION_ASM_OP "\t.text"
 659
 660 /* Output before writable data.  */
 661
 662 #undef DATA_SECTION_ASM_OP
 663 #define DATA_SECTION_ASM_OP "\t.data"
 664
 665 #undef  ALIGN_ASM_OP
 666 #define ALIGN_ASM_OP            ".align"
 667
 668 #undef  ASM_OUTPUT_ALIGN
 669 #define ASM_OUTPUT_ALIGN(FILE,LOG)      \
 670   if ((LOG) != 0)                       \
 671     fprintf (FILE, "\t%s\t%d\n", ALIGN_ASM_OP, (LOG))
 672
 673 /* The maximum alignment which the object file format can support in
 674    bits.  For Mach-O, this is 2^15 bytes.  */
 675
 676 #undef  MAX_OFILE_ALIGNMENT
 677 #define MAX_OFILE_ALIGNMENT (0x8000 * 8)
 678
 679 #define L2_MAX_OFILE_ALIGNMENT 15
 680
 681 /*  These are the three variants that emit referenced blank space.  */
 682 #define ASM_OUTPUT_ALIGNED_BSS(FILE, DECL, NAME, SIZE, ALIGN)           \
 683         darwin_output_aligned_bss ((FILE), (DECL), (NAME), (SIZE), (ALIGN))
 684
 685 #undef  ASM_OUTPUT_ALIGNED_DECL_LOCAL
 686 #define ASM_OUTPUT_ALIGNED_DECL_LOCAL(FILE, DECL, NAME, SIZE, ALIGN)    \
 687         darwin_asm_output_aligned_decl_local                            \
 688                                   ((FILE), (DECL), (NAME), (SIZE), (ALIGN))
 689
 690 #undef  ASM_OUTPUT_ALIGNED_DECL_COMMON
 691 #define ASM_OUTPUT_ALIGNED_DECL_COMMON(FILE, DECL, NAME, SIZE, ALIGN)   \
 692         darwin_asm_output_aligned_decl_common                           \
 693                                    ((FILE), (DECL), (NAME), (SIZE), (ALIGN))
 694
 695 /* The generic version, archs should over-ride where required.  */
 696 #define MACHOPIC_NL_SYMBOL_PTR_SECTION ".non_lazy_symbol_pointer"
 697
 698 /* Declare the section variables.  */
 699 #ifndef USED_FOR_TARGET
 700 enum darwin_section_enum {
 701 #define DEF_SECTION(NAME, FLAGS, DIRECTIVE, OBJC) NAME,
 702 #include "darwin-sections.def"
 703 #undef DEF_SECTION
 704   NUM_DARWIN_SECTIONS
 705 };
 706 extern GTY(()) section * darwin_sections[NUM_DARWIN_SECTIONS];
 707 #endif
 708
 709 #undef  TARGET_ASM_SELECT_SECTION
 710 #define TARGET_ASM_SELECT_SECTION machopic_select_section
 711
 712 #undef  TARGET_ASM_FUNCTION_SECTION
 713 #define TARGET_ASM_FUNCTION_SECTION darwin_function_section
 714
 715 #undef  TARGET_ASM_FUNCTION_SWITCHED_TEXT_SECTIONS
 716 #define TARGET_ASM_FUNCTION_SWITCHED_TEXT_SECTIONS \
 717         darwin_function_switched_text_sections
 718
 719 #undef  TARGET_ASM_SELECT_RTX_SECTION
 720 #define TARGET_ASM_SELECT_RTX_SECTION machopic_select_rtx_section
 721 #undef  TARGET_ASM_UNIQUE_SECTION
 722 #define TARGET_ASM_UNIQUE_SECTION darwin_unique_section
 723 #undef  TARGET_ASM_FUNCTION_RODATA_SECTION
 724 #define TARGET_ASM_FUNCTION_RODATA_SECTION default_no_function_rodata_section
 725
 726 #undef  TARGET_ASM_TM_CLONE_TABLE_SECTION
 727 #define TARGET_ASM_TM_CLONE_TABLE_SECTION darwin_tm_clone_table_section
 728
 729 #undef  TARGET_ASM_RELOC_RW_MASK
 730 #define TARGET_ASM_RELOC_RW_MASK machopic_reloc_rw_mask
 731
 732 /* Globalizing directive for a label.  */
 733 #define GLOBAL_ASM_OP "\t.globl "
 734 #define TARGET_ASM_GLOBALIZE_LABEL darwin_globalize_label
 735
 736 /* Emit an assembler directive to set visibility for a symbol.  Used
 737    to support visibility attribute and Darwin's private extern
 738    feature.  */
 739 #undef TARGET_ASM_ASSEMBLE_VISIBILITY
 740 #define TARGET_ASM_ASSEMBLE_VISIBILITY darwin_assemble_visibility
 741
 742 /* Extra attributes for Darwin.  */
 743 #define SUBTARGET_ATTRIBUTE_TABLE                                            \
 744   /* { name, min_len, max_len, decl_req, type_req, fn_type_req, handler,     \
 745        affects_type_identity } */                                                    \
 746   { "apple_kext_compatibility", 0, 0, false, true, false,                    \
 747     darwin_handle_kext_attribute, false },                                   \
 748   { "weak_import", 0, 0, true, false, false,                                 \
 749     darwin_handle_weak_import_attribute, false }
 750
 751 /* Make local constant labels linker-visible, so that if one follows a
 752    weak_global constant, ld64 will be able to separate the atoms.  */
 753 #undef ASM_GENERATE_INTERNAL_LABEL
 754 #define ASM_GENERATE_INTERNAL_LABEL(LABEL,PREFIX,NUM)   \
 755   do {                                                  \
 756     if (strcmp ("LC", PREFIX) == 0)                     \
 757       sprintf (LABEL, "*%s%ld", "lC", (long)(NUM));     \
 758     else                                                \
 759       sprintf (LABEL, "*%s%ld", PREFIX, (long)(NUM));   \
 760   } while (0)
 761
 762 #undef TARGET_ASM_MARK_DECL_PRESERVED
 763 #define TARGET_ASM_MARK_DECL_PRESERVED darwin_mark_decl_preserved
 764
 765 /* Set on a symbol with SYMBOL_FLAG_FUNCTION or
 766    MACHO_SYMBOL_FLAG_VARIABLE to indicate that the function or
 767    variable has been defined in this translation unit.
 768    When porting Mach-O to new architectures you need to make
 769    sure these aren't clobbered by the backend.  */
 770
 771 #define MACHO_SYMBOL_FLAG_VARIABLE (SYMBOL_FLAG_MACH_DEP)
 772 #define MACHO_SYMBOL_FLAG_DEFINED ((SYMBOL_FLAG_MACH_DEP) << 1)
 773
 774 /* Set on a symbol to indicate when fix-and-continue style code
 775    generation is being used and the symbol refers to a static symbol
 776    that should be rebound from new instances of a translation unit to
 777    the original instance of the data.  */
 778
 779 #define MACHO_SYMBOL_STATIC ((SYMBOL_FLAG_MACH_DEP) << 2)
 780
 781 /* Symbolic names for various things we might know about a symbol.  */
 782
 783 enum machopic_addr_class {
 784   MACHOPIC_UNDEFINED,
 785   MACHOPIC_DEFINED_DATA,
 786   MACHOPIC_UNDEFINED_DATA,
 787   MACHOPIC_DEFINED_FUNCTION,
 788   MACHOPIC_UNDEFINED_FUNCTION
 789 };
 790
 791 /* Macros defining the various PIC cases.  */
 792
 793 #undef  MACHO_DYNAMIC_NO_PIC_P
 794 #define MACHO_DYNAMIC_NO_PIC_P  (TARGET_MACHO_DYNAMIC_NO_PIC)
 795 #undef  MACHOPIC_INDIRECT
 796 #define MACHOPIC_INDIRECT       (flag_pic || MACHO_DYNAMIC_NO_PIC_P)
 797 #define MACHOPIC_JUST_INDIRECT  (MACHO_DYNAMIC_NO_PIC_P)
 798 #undef  MACHOPIC_PURE
 799 #define MACHOPIC_PURE           (flag_pic && ! MACHO_DYNAMIC_NO_PIC_P)
 800
 801 #undef TARGET_ENCODE_SECTION_INFO
 802 #define TARGET_ENCODE_SECTION_INFO  darwin_encode_section_info
 803 #undef TARGET_STRIP_NAME_ENCODING
 804 #define TARGET_STRIP_NAME_ENCODING  default_strip_name_encoding
 805
 806 #define GEN_BINDER_NAME_FOR_STUB(BUF,STUB,STUB_LENGTH)          \
 807   do {                                                          \
 808     const char *const stub_ = (STUB);                           \
 809     char *buffer_ = (BUF);                                      \
 810     strcpy (buffer_, stub_);                                    \
 811     if (stub_[0] == '"')                                        \
 812       {                                                         \
 813         strcpy (buffer_ + (STUB_LENGTH) - 1, "_binder\"");      \
 814       }                                                         \
 815     else                                                        \
 816       {                                                         \
 817         strcpy (buffer_ + (STUB_LENGTH), "_binder");            \
 818       }                                                         \
 819   } while (0)
 820
 821 #define GEN_SYMBOL_NAME_FOR_SYMBOL(BUF,SYMBOL,SYMBOL_LENGTH)    \
 822   do {                                                          \
 823     const char *const symbol_ = (SYMBOL);                       \
 824     char *buffer_ = (BUF);                                      \
 825     if (name_needs_quotes (symbol_) && symbol_[0] != '"')       \
 826       {                                                         \
 827           sprintf (buffer_, "\"%s\"", symbol_);                 \
 828       }                                                         \
 829     else                                                        \
 830       {                                                         \
 831         strcpy (buffer_, symbol_);                              \
 832       }                                                         \
 833   } while (0)
 834
 835 /* Given a symbol name string, create the lazy pointer version
 836    of the symbol name.  */
 837
 838 #define GEN_LAZY_PTR_NAME_FOR_SYMBOL(BUF,SYMBOL,SYMBOL_LENGTH)  \
 839   do {                                                          \
 840     const char *symbol_ = (SYMBOL);                             \
 841     char *buffer_ = (BUF);                                      \
 842     if (symbol_[0] == '"')                                      \
 843       {                                                         \
 844         strcpy (buffer_, "\"L");                                \
 845         strcpy (buffer_ + 2, symbol_ + 1);                      \
 846         strcpy (buffer_ + (SYMBOL_LENGTH), "$lazy_ptr\"");      \
 847       }                                                         \
 848     else if (name_needs_quotes (symbol_))                       \
 849       {                                                         \
 850         strcpy (buffer_, "\"L");                                \
 851         strcpy (buffer_ + 2, symbol_);                          \
 852         strcpy (buffer_ + (SYMBOL_LENGTH) + 2, "$lazy_ptr\"");  \
 853       }                                                         \
 854     else                                                        \
 855       {                                                         \
 856         strcpy (buffer_, "L");                                  \
 857         strcpy (buffer_ + 1, symbol_);                          \
 858         strcpy (buffer_ + (SYMBOL_LENGTH) + 1, "$lazy_ptr");    \
 859       }                                                         \
 860   } while (0)
 861
 862 #define EH_FRAME_SECTION_NAME   "__TEXT"
 863 #define EH_FRAME_SECTION_ATTR ",coalesced,no_toc+strip_static_syms+live_support"
 864
 865 #undef ASM_PREFERRED_EH_DATA_FORMAT
 866 #define ASM_PREFERRED_EH_DATA_FORMAT(CODE,GLOBAL)  \
 867   (((CODE) == 2 && (GLOBAL) == 1) \
 868    ? (DW_EH_PE_pcrel | DW_EH_PE_indirect | DW_EH_PE_sdata4) : \
 869      ((CODE) == 1 || (GLOBAL) == 0) ? DW_EH_PE_pcrel : DW_EH_PE_absptr)
 870
 871 #define ASM_OUTPUT_DWARF_DELTA(FILE,SIZE,LABEL1,LABEL2)  \
 872   darwin_asm_output_dwarf_delta (FILE, SIZE, LABEL1, LABEL2, 0)
 873
 874 #define ASM_OUTPUT_DWARF_OFFSET(FILE,SIZE,LABEL,OFFSET,BASE)  \
 875   darwin_asm_output_dwarf_offset (FILE, SIZE, LABEL, OFFSET, BASE)
 876
 877 #define ASM_MAYBE_OUTPUT_ENCODED_ADDR_RTX(ASM_OUT_FILE, ENCODING, SIZE, ADDR, DONE)     \
 878       if (ENCODING == ASM_PREFERRED_EH_DATA_FORMAT (2, 1)) {                            \
 879         darwin_non_lazy_pcrel (ASM_OUT_FILE, ADDR);                                     \
 880         goto DONE;                                                                      \
 881       }
 882
 883 /* Experimentally, putting jump tables in text is faster on SPEC.
 884    Also this is needed for correctness for coalesced functions.  */
 885
 886 #ifndef JUMP_TABLES_IN_TEXT_SECTION
 887 #define JUMP_TABLES_IN_TEXT_SECTION 1
 888 #endif
 889
 890 #define TARGET_TERMINATE_DW2_EH_FRAME_INFO false
 891
 892 #define TARGET_ASM_INIT_SECTIONS darwin_init_sections
 893 #undef TARGET_ASM_NAMED_SECTION
 894 #define TARGET_ASM_NAMED_SECTION darwin_asm_named_section
 895
 896 #define DARWIN_REGISTER_TARGET_PRAGMAS()                        \
 897   do {                                                          \
 898     if (!flag_preprocess_only)                                  \
 899       cpp_register_pragma (parse_in, NULL, "mark",              \
 900                            darwin_pragma_ignore, false);        \
 901     c_register_pragma (0, "options", darwin_pragma_options);    \
 902     c_register_pragma (0, "segment", darwin_pragma_ignore);     \
 903     c_register_pragma (0, "unused", darwin_pragma_unused);      \
 904     c_register_pragma (0, "ms_struct", darwin_pragma_ms_struct); \
 905   } while (0)
 906
 907 #undef ASM_APP_ON
 908 #define ASM_APP_ON ""
 909 #undef ASM_APP_OFF
 910 #define ASM_APP_OFF ""
 911
 912 void darwin_register_frameworks (const char *, const char *, int);
 913 void darwin_register_objc_includes (const char *, const char *, int);
 914 #define TARGET_EXTRA_PRE_INCLUDES darwin_register_objc_includes
 915 #define TARGET_EXTRA_INCLUDES darwin_register_frameworks
 916
 917 void add_framework_path (char *);
 918 #define TARGET_OPTF add_framework_path
 919
 920 #define TARGET_POSIX_IO
 921
 922 #define WINT_TYPE "int"
 923
 924 /* Every program on darwin links against libSystem which contains the pthread
 925    routines, so there's no need to explicitly call out when doing threaded
 926    work.  */
 927
 928 #undef GOMP_SELF_SPECS
 929 #define GOMP_SELF_SPECS ""
 930 #undef GTM_SELF_SPECS
 931 #define GTM_SELF_SPECS ""
 932
 933 /* Darwin disables section anchors by default.
 934    They should be enabled per arch where support exists in that arch.  */
 935 #define TARGET_ASM_OUTPUT_ANCHOR NULL
 936 #define DARWIN_SECTION_ANCHORS 0
 937
 938 #define HAVE_ENABLE_EXECUTE_STACK
 939
 940 /* For Apple KEXTs, we make the constructors return this to match gcc
 941    2.95.  */
 942 #define TARGET_CXX_CDTOR_RETURNS_THIS (darwin_kextabi_p)
 943 #define TARGET_KEXTABI flag_apple_kext
 944
 945 /* We have target-specific builtins.  */
 946 #define SUBTARGET_FOLD_BUILTIN darwin_fold_builtin
 947
 948 #define TARGET_N_FORMAT_TYPES 1
 949 #define TARGET_FORMAT_TYPES darwin_additional_format_types
 950
 951 #ifndef USED_FOR_TARGET
 952 extern void darwin_driver_init (unsigned int *,struct cl_decoded_option **);
 953 #define GCC_DRIVER_HOST_INITIALIZATION \
 954   darwin_driver_init (&decoded_options_count, &decoded_options)
 955 #endif
 956
 957 /* The Apple assembler and linker do not support constructor priorities.  */
 958 #undef SUPPORTS_INIT_PRIORITY
 959 #define SUPPORTS_INIT_PRIORITY 0
 960
 961 /* When building cross-compilers (and native crosses) we shall default to
 962    providing an osx-version-min of this unless overridden by the User.
 963    10.5 is the only version that fully supports all our archs so that's the
 964    fall-back default.  */
 965 #define DEF_MIN_OSX_VERSION "10.5"
 966
 967 /* Later versions of ld64 support coalescing weak code/data without requiring
 968    that they be placed in specially identified sections.  This is the earliest
 969    _tested_ version known to support this so far.  */
 970 #define MIN_LD64_NO_COAL_SECTS "236.4"
 971
 972 #ifndef LD64_VERSION
 973 #define LD64_VERSION "85.2"
 974 #else
 975 #define DEF_LD64 LD64_VERSION
 976 #endif
 977
 978 #endif /* CONFIG_DARWIN_H */