gcc/config/darwin.h

   1 /* Target definitions for Darwin (Mac OS X) systems.
   2    Copyright (C) 1989, 1990, 1991, 1992, 1993, 2000, 2001, 2002, 2003, 2004
   3    Free Software Foundation, Inc.
   4    Contributed by Apple Computer Inc.
   5
   6 This file is part of GCC.
   7
   8 GCC is free software; you can redistribute it and/or modify
   9 it under the terms of the GNU General Public License as published by
  10 the Free Software Foundation; either version 2, or (at your option)
  11 any later version.
  12
  13 GCC is distributed in the hope that it will be useful,
  14 but WITHOUT ANY WARRANTY; without even the implied warranty of
  15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16 GNU General Public License for more details.
  17
  18 You should have received a copy of the GNU General Public License
  19 along with GCC; see the file COPYING.  If not, write to
  20 the Free Software Foundation, 59 Temple Place - Suite 330,
  21 Boston, MA 02111-1307, USA.  */
  22
  23 #ifndef CONFIG_DARWIN_H
  24 #define CONFIG_DARWIN_H
  25
  26 /* The definitions in this file are common to all processor types
  27    running Darwin, which is the kernel for Mac OS X.  Darwin is
  28    basically a BSD user layer laid over a Mach kernel, then evolved
  29    for many years (at NeXT) in parallel with other Unix systems.  So
  30    while the runtime is a somewhat idiosyncratic Mach-based thing,
  31    other definitions look like they would for a BSD variant.  */
  32
  33 /* Although NeXT ran on many different architectures, as of Jan 2001
  34    the only supported Darwin targets are PowerPC and x86.  */
  35
  36 /* One of Darwin's NeXT legacies is the Mach-O format, which is partly
  37    like a.out and partly like COFF, with additional features like
  38    multi-architecture binary support.  */
  39
  40 #define OBJECT_FORMAT_MACHO
  41
  42 /* Suppress g++ attempt to link in the math library automatically. */
  43 #define MATH_LIBRARY ""
  44
  45 /* We have atexit.  */
  46
  47 #define HAVE_ATEXIT
  48
  49 /* Define an empty body for the function do_global_dtors() in libgcc2.c.  */
  50
  51 #define DO_GLOBAL_DTORS_BODY
  52
  53 /* The string value for __SIZE_TYPE__.  */
  54
  55 #ifndef SIZE_TYPE
  56 #define SIZE_TYPE "long unsigned int"
  57 #endif
  58
  59 /* Type used for ptrdiff_t, as a string used in a declaration.  */
  60
  61 #undef  PTRDIFF_TYPE
  62 #define PTRDIFF_TYPE "int"
  63
  64 /* wchar_t is int.  */
  65
  66 #undef  WCHAR_TYPE
  67 #define WCHAR_TYPE "int"
  68 #undef  WCHAR_TYPE_SIZE
  69 #define WCHAR_TYPE_SIZE 32
  70
  71 /* Default to using the NeXT-style runtime, since that's what is
  72    pre-installed on Darwin systems.  */
  73
  74 #define NEXT_OBJC_RUNTIME
  75
  76 /* Don't default to pcc-struct-return, because gcc is the only compiler, and
  77    we want to retain compatibility with older gcc versions.  */
  78
  79 #undef  DEFAULT_PCC_STRUCT_RETURN
  80 #define DEFAULT_PCC_STRUCT_RETURN 0
  81
  82 /* This table intercepts weirdo options whose names would interfere
  83    with normal driver conventions, and either translates them into
  84    standardly-named options, or adds a 'Z' so that they can get to
  85    specs processing without interference.
  86
  87    Do not expand a linker option to "-Xlinker -<option>", since that
  88    forfeits the ability to control via spec strings later.  However,
  89    as a special exception, do this translation with -filelist, because
  90    otherwise the driver will think there are no input files and quit.
  91    (The alternative would be to hack the driver to recognize -filelist
  92    specially, but it's simpler to use the translation table.)
  93
  94    Note that an option name with a prefix that matches another option
  95    name, that also takes an argument, needs to be modified so the
  96    prefix is different, otherwise a '*' after the shorter option will
  97    match with the longer one.
  98
  99    The SUBTARGET_OPTION_TRANSLATE_TABLE macro, which _must_ be defined
 100    in gcc/config/{i386,rs6000}/darwin.h, should contain any additional
 101    command-line option translations specific to the particular target
 102    architecture.  */
 103
 104 #define TARGET_OPTION_TRANSLATE_TABLE \
 105   { "-all_load", "-Zall_load" },  \
 106   { "-allowable_client", "-Zallowable_client" },  \
 107   { "-arch_errors_fatal", "-Zarch_errors_fatal" },  \
 108   { "-bind_at_load", "-Zbind_at_load" },  \
 109   { "-bundle", "-Zbundle" },  \
 110   { "-bundle_loader", "-Zbundle_loader" },  \
 111   { "-weak_reference_mismatches", "-Zweak_reference_mismatches" },  \
 112   { "-dependency-file", "-MF" }, \
 113   { "-dylib_file", "-Zdylib_file" }, \
 114   { "-dynamic", "-Zdynamic" },  \
 115   { "-dynamiclib", "-Zdynamiclib" },  \
 116   { "-exported_symbols_list", "-Zexported_symbols_list" },  \
 117   { "-seg_addr_table_filename", "-Zseg_addr_table_filename" }, \
 118   { "-filelist", "-Xlinker -filelist -Xlinker" },  \
 119   { "-framework", "-Xlinker -framework -Xlinker" },  \
 120   { "-flat_namespace", "-Zflat_namespace" },  \
 121   { "-force_cpusubtype_ALL", "-Zforce_cpusubtype_ALL" },  \
 122   { "-force_flat_namespace", "-Zforce_flat_namespace" },  \
 123   { "-image_base", "-Zimage_base" },  \
 124   { "-init", "-Zinit" },  \
 125   { "-install_name", "-Zinstall_name" },  \
 126   { "-multiply_defined_unused", "-Zmultiplydefinedunused" },  \
 127   { "-multiply_defined", "-Zmultiply_defined" },  \
 128   { "-multi_module", "-Zmulti_module" },  \
 129   { "-static", "-static -Wa,-static" },  \
 130   { "-single_module", "-Zsingle_module" },  \
 131   { "-unexported_symbols_list", "-Zunexported_symbols_list" }, \
 132   SUBTARGET_OPTION_TRANSLATE_TABLE
 133
 134 /* These compiler options take n arguments.  */
 135
 136 #undef  WORD_SWITCH_TAKES_ARG
 137 #define WORD_SWITCH_TAKES_ARG(STR)              \
 138   (DEFAULT_WORD_SWITCH_TAKES_ARG (STR) ? 1 :    \
 139    !strcmp (STR, "Zallowable_client") ? 1 :     \
 140    !strcmp (STR, "arch") ? 1 :                  \
 141    !strcmp (STR, "arch_only") ? 1 :             \
 142    !strcmp (STR, "Zbundle_loader") ? 1 :        \
 143    !strcmp (STR, "client_name") ? 1 :           \
 144    !strcmp (STR, "compatibility_version") ? 1 : \
 145    !strcmp (STR, "current_version") ? 1 :       \
 146    !strcmp (STR, "Zdylib_file") ? 1 :           \
 147    !strcmp (STR, "Zexported_symbols_list") ? 1 : \
 148    !strcmp (STR, "Zimage_base") ? 1 :           \
 149    !strcmp (STR, "Zinit") ? 1 :                 \
 150    !strcmp (STR, "Zinstall_name") ? 1 :         \
 151    !strcmp (STR, "Zmultiplydefinedunused") ? 1 : \
 152    !strcmp (STR, "Zmultiply_defined") ? 1 :     \
 153    !strcmp (STR, "precomp-trustfile") ? 1 :     \
 154    !strcmp (STR, "read_only_relocs") ? 1 :      \
 155    !strcmp (STR, "sectcreate") ? 3 :            \
 156    !strcmp (STR, "sectorder") ? 3 :             \
 157    !strcmp (STR, "Zseg_addr_table_filename") ?1 :\
 158    !strcmp (STR, "seg1addr") ? 1 :              \
 159    !strcmp (STR, "segprot") ? 3 :               \
 160    !strcmp (STR, "seg_addr_table") ? 1 :        \
 161    !strcmp (STR, "sub_library") ? 1 :           \
 162    !strcmp (STR, "sub_umbrella") ? 1 :          \
 163    !strcmp (STR, "umbrella") ? 1 :              \
 164    !strcmp (STR, "undefined") ? 1 :             \
 165    !strcmp (STR, "Zunexported_symbols_list") ? 1 : \
 166    !strcmp (STR, "Zweak_reference_mismatches") ? 1 : \
 167    !strcmp (STR, "pagezero_size") ? 1 :         \
 168    !strcmp (STR, "segs_read_only_addr") ? 1 :   \
 169    !strcmp (STR, "segs_read_write_addr") ? 1 :  \
 170    !strcmp (STR, "sectalign") ? 3 :             \
 171    !strcmp (STR, "sectobjectsymbols") ? 2 :     \
 172    !strcmp (STR, "segcreate") ? 3 :             \
 173    !strcmp (STR, "dylinker_install_name") ? 1 : \
 174    0)
 175
 176 /* Machine dependent cpp options.  __APPLE_CC__ is defined as the
 177    Apple include files expect it to be defined and won't work if it
 178    isn't.  */
 179
 180 #undef  CPP_SPEC
 181 #define CPP_SPEC "%{static:%{!dynamic:-D__STATIC__}}%{!static:-D__DYNAMIC__}\
 182     -D__APPLE_CC__=1"
 183
 184 /* This is mostly a clone of the standard LINK_COMMAND_SPEC, plus
 185    precomp, libtool, and fat build additions.  Also we
 186    don't specify a second %G after %L because libSystem is
 187    self-contained and doesn't need to link against libgcc.a.  */
 188 /* In general, random Darwin linker flags should go into LINK_SPEC
 189    instead of LINK_COMMAND_SPEC.  The command spec is better for
 190    specifying the handling of options understood by generic Unix
 191    linkers, and for positional arguments like libraries.  */
 192 #define LINK_COMMAND_SPEC "\
 193 %{!fdump=*:%{!fsyntax-only:%{!precomp:%{!c:%{!M:%{!MM:%{!E:%{!S:\
 194     %{!Zdynamiclib:%(linker)}%{Zdynamiclib:/usr/bin/libtool} \
 195     %{!Zdynamiclib:-arch %(darwin_arch)} \
 196     %{Zdynamiclib:-arch_only %(darwin_arch)} \
 197     %l %X %{d} %{s} %{t} %{Z} \
 198     %{!Zdynamiclib:%{A} %{e*} %{m} %{N} %{n} %{r} %{u*} %{x} %{z}} \
 199     %{@:-o %f%u.out}%{!@:%{o*}%{!o:-o a.out}} \
 200     %{!Zdynamiclib:%{!A:%{!nostdlib:%{!nostartfiles:%S}}}} \
 201     %{L*} %(link_libgcc) %o %{fprofile-arcs|fprofile-generate:-lgcov} \
 202     %{!nostdlib:%{!nodefaultlibs:%G %L}} \
 203     %{!A:%{!nostdlib:%{!nostartfiles:%E}}} %{T*} %{F*} \
 204     %{!--help:%{!no-c++filt|c++filt:| c++filt }} }}}}}}}}"
 205
 206 /* Please keep the random linker options in alphabetical order (modulo
 207    'Z' and 'no' prefixes).  Options that can only go to one of libtool
 208    or ld must be listed twice, under both !Zdynamiclib and
 209    Zdynamiclib, with one of the cases reporting an error.  */
 210 /* Note that options taking arguments may appear multiple times on a
 211    command line with different arguments each time, so put a * after
 212    their names so all of them get passed.  */
 213 #define LINK_SPEC  \
 214   "%{static}%{!static:-dynamic} \
 215    %{!Zdynamiclib: \
 216      %{Zbundle:-bundle} \
 217      %{Zbundle_loader*:-bundle_loader %*} \
 218      %{client_name*} \
 219      %{compatibility_version*:%e-compatibility_version only allowed with -dynamiclib\
 220 } \
 221      %{current_version*:%e-current_version only allowed with -dynamiclib} \
 222      %{Zforce_cpusubtype_ALL:-force_cpusubtype_ALL} \
 223      %{Zforce_flat_namespace:-force_flat_namespace} \
 224      %{Zinstall_name*:%e-install_name only allowed with -dynamiclib} \
 225      %{keep_private_externs} \
 226      %{private_bundle} \
 227     } \
 228    %{Zdynamiclib: \
 229      %{Zbundle:%e-bundle not allowed with -dynamiclib} \
 230      %{Zbundle_loader*:%e-bundle_loader not allowed with -dynamiclib} \
 231      %{client_name*:%e-client_name not allowed with -dynamiclib} \
 232      %{compatibility_version*} \
 233      %{current_version*} \
 234      %{Zforce_cpusubtype_ALL:%e-force_cpusubtype_ALL not allowed with -dynamiclib} \
 235      %{Zforce_flat_namespace:%e-force_flat_namespace not allowed with -dynamiclib} \
 236      %{Zinstall_name*:-install_name %*} \
 237      %{keep_private_externs:%e-keep_private_externs not allowed with -dynamiclib} \
 238      %{private_bundle:%e-private_bundle not allowed with -dynamiclib} \
 239     } \
 240    %{Zall_load:-all_load}%{Zdynamiclib:%{!Zall_load:-noall_load}} \
 241    %{Zallowable_client*:-allowable_client %*} \
 242    %{Zbind_at_load:-bind_at_load} \
 243    %{Zarch_errors_fatal:-arch_errors_fatal} \
 244    %{Zdylib_file*:-dylib_file %*} \
 245    %{Zdynamic:-dynamic}\
 246    %{Zexported_symbols_list*:-exported_symbols_list %*} \
 247    %{Zflat_namespace:-flat_namespace} \
 248    %{headerpad_max_install_names*} \
 249    %{Zimage_base*:-image_base %*} \
 250    %{Zinit*:-init %*} \
 251    %{nomultidefs} \
 252    %{Zmulti_module:-multi_module} %{Zsingle_module:-single_module} \
 253    %{Zmultiply_defined*:-multiply_defined %*} \
 254    %{Zmultiplydefinedunused*:-multiply_defined_unused %*} \
 255    %{prebind} %{noprebind} %{nofixprebinding} %{prebind_all_twolevel_modules} \
 256    %{read_only_relocs} \
 257    %{sectcreate*} %{sectorder*} %{seg1addr*} %{segprot*} %{seg_addr_table*} \
 258    %{Zseg_addr_table_filename*:-seg_addr_table_filename %*} \
 259    %{sub_library*} %{sub_umbrella*} \
 260    %{twolevel_namespace} %{twolevel_namespace_hints} \
 261    %{umbrella*} \
 262    %{undefined*} \
 263    %{Zunexported_symbols_list*:-unexported_symbols_list %*} \
 264    %{Zweak_reference_mismatches*:-weak_reference_mismatches %*} \
 265    %{X} \
 266    %{y*} \
 267    %{w} \
 268    %{pagezero_size*} %{segs_read_*} %{seglinkedit} %{noseglinkedit}  \
 269    %{sectalign*} %{sectobjectsymbols*} %{segcreate*} %{whyload} \
 270    %{whatsloaded} %{dylinker_install_name*} \
 271    %{dylinker} %{Mach} "
 272
 273
 274 /* Machine dependent libraries but do not redefine it if we already on 7.0 and
 275    above as it needs to link with libmx also.  */
 276
 277 #ifndef LIB_SPEC
 278 #define LIB_SPEC "%{!static:-lSystem}"
 279 #endif
 280
 281 /* We specify crt0.o as -lcrt0.o so that ld will search the library path.  */
 282
 283 #undef  STARTFILE_SPEC
 284 #define STARTFILE_SPEC  \
 285   "%{!Zdynamiclib:%{Zbundle:%{!static:-lbundle1.o}} \
 286      %{!Zbundle:%{pg:%{static:-lgcrt0.o} \
 287                      %{!static:%{object:-lgcrt0.o} \
 288                                %{!object:%{preload:-lgcrt0.o} \
 289                                  %{!preload:-lgcrt1.o crt2.o%s}}}} \
 290                 %{!pg:%{static:-lcrt0.o} \
 291                       %{!static:%{object:-lcrt0.o} \
 292                                 %{!object:%{preload:-lcrt0.o} \
 293                                   %{!preload:-lcrt1.o crt2.o%s}}}}}}"
 294
 295 /* The native Darwin linker doesn't necessarily place files in the order
 296    that they're specified on the link line.  Thus, it is pointless
 297    to put anything in ENDFILE_SPEC.  */
 298 /* #define ENDFILE_SPEC "" */
 299
 300 /* We use Dbx symbol format.  */
 301
 302 #define DBX_DEBUGGING_INFO 1
 303
 304 /* Also enable Dwarf 2 as an option.  */
 305 #define DWARF2_DEBUGGING_INFO
 306 #define PREFERRED_DEBUGGING_TYPE DBX_DEBUG
 307
 308 #define DEBUG_FRAME_SECTION   "__DWARFA,__debug_frame,coalesced,no_toc+strip_static_syms"
 309 #define DEBUG_INFO_SECTION    "__DWARFA,__debug_info"
 310 #define DEBUG_ABBREV_SECTION  "__DWARFA,__debug_abbrev"
 311 #define DEBUG_ARANGES_SECTION "__DWARFA,__debug_aranges"
 312 #define DEBUG_MACINFO_SECTION "__DWARFA,__debug_macinfo"
 313 #define DEBUG_LINE_SECTION    "__DWARFA,__debug_line"
 314 #define DEBUG_LOC_SECTION     "__DWARFA,__debug_loc"
 315 #define DEBUG_PUBNAMES_SECTION        "__DWARFA,__debug_pubnames"
 316 #define DEBUG_STR_SECTION     "__DWARFA,__debug_str"
 317 #define DEBUG_RANGES_SECTION  "__DWARFA,__debug_ranges"
 318
 319 /* When generating stabs debugging, use N_BINCL entries.  */
 320
 321 #define DBX_USE_BINCL
 322
 323 /* There is no limit to the length of stabs strings.  */
 324
 325 #define DBX_CONTIN_LENGTH 0
 326
 327 /* gdb needs a null N_SO at the end of each file for scattered loading.  */
 328
 329 #undef  DBX_OUTPUT_MAIN_SOURCE_FILE_END
 330 #define DBX_OUTPUT_MAIN_SOURCE_FILE_END(FILE, FILENAME)                 \
 331 do { text_section ();                                                   \
 332      fprintf (FILE,                                                     \
 333               "\t.stabs \"%s\",%d,0,0,Letext\nLetext:\n", "" , N_SO);   \
 334    } while (0)
 335
 336 /* Making a symbols weak on Darwin requires more than just setting DECL_WEAK. */
 337 #define MAKE_DECL_ONE_ONLY(DECL) darwin_make_decl_one_only (DECL)
 338
 339 /* Representation of linkonce symbols for the MACH-O assembler. Linkonce
 340    symbols must be given a special section *and* must be preceded by a
 341    special assembler directive. */
 342 #define ASM_MAKE_LABEL_LINKONCE(FILE,  NAME)                            \
 343  do { const char* _x = (NAME); if (!!strncmp (_x, "_OBJC_", 6)) {       \
 344   fputs (".weak_definition ", FILE); assemble_name (FILE, _x);          \
 345   fputs ("\n", FILE); }} while (0)
 346
 347 /* We support hidden visibility */
 348 #undef TARGET_SUPPORTS_HIDDEN
 349 #define TARGET_SUPPORTS_HIDDEN 1
 350
 351 /* The Darwin linker imposes two limitations on common symbols: they
 352    can't have hidden visibility, and they can't appear in dylibs.  As
 353    a consequence, we should never use common symbols to represent
 354    vague linkage. */
 355 #undef USE_COMMON_FOR_ONE_ONLY
 356 #define USE_COMMON_FOR_ONE_ONLY 0
 357
 358 /* The Darwin linker doesn't want coalesced symbols to appear in
 359    a static archive's table of contents. */
 360 #undef TARGET_WEAK_NOT_IN_ARCHIVE_TOC
 361 #define TARGET_WEAK_NOT_IN_ARCHIVE_TOC 1
 362
 363 /* We make exception information linkonce. */
 364 #undef TARGET_USES_WEAK_UNWIND_INFO
 365 #define TARGET_USES_WEAK_UNWIND_INFO 1
 366
 367 /* We need to use a nonlocal label for the start of an EH frame: the
 368    Darwin linker requires that a coalesced section start with a label. */
 369 #undef FRAME_BEGIN_LABEL
 370 #define FRAME_BEGIN_LABEL "EH_frame"
 371
 372 /* Emit a label for the FDE corresponding to DECL.  EMPTY means
 373    emit a label for an empty FDE. */
 374 #define TARGET_ASM_EMIT_UNWIND_LABEL darwin_emit_unwind_label
 375
 376 /* Our profiling scheme doesn't LP labels and counter words.  */
 377
 378 #define NO_PROFILE_COUNTERS     1
 379
 380 #undef  INIT_SECTION_ASM_OP
 381 #define INIT_SECTION_ASM_OP
 382
 383 #undef  INVOKE__main
 384
 385 #define TARGET_ASM_CONSTRUCTOR  machopic_asm_out_constructor
 386 #define TARGET_ASM_DESTRUCTOR   machopic_asm_out_destructor
 387
 388 /* Always prefix with an underscore.  */
 389
 390 #define USER_LABEL_PREFIX "_"
 391
 392 /* Don't output a .file directive.  That is only used by the assembler for
 393    error reporting.  */
 394 #undef  TARGET_ASM_FILE_START_FILE_DIRECTIVE
 395 #define TARGET_ASM_FILE_START_FILE_DIRECTIVE false
 396
 397 #undef  TARGET_ASM_FILE_END
 398 #define TARGET_ASM_FILE_END darwin_file_end
 399
 400 #define ASM_OUTPUT_SKIP(FILE,SIZE)  \
 401   fprintf (FILE, "\t.space "HOST_WIDE_INT_PRINT_UNSIGNED"\n", SIZE)
 402
 403 /* Give ObjC methods pretty symbol names.  */
 404
 405 #undef  OBJC_GEN_METHOD_LABEL
 406 #define OBJC_GEN_METHOD_LABEL(BUF,IS_INST,CLASS_NAME,CAT_NAME,SEL_NAME,NUM) \
 407   do { if (CAT_NAME)                                                    \
 408          sprintf (BUF, "%c[%s(%s) %s]", (IS_INST) ? '-' : '+',          \
 409                   (CLASS_NAME), (CAT_NAME), (SEL_NAME));                \
 410        else                                                             \
 411          sprintf (BUF, "%c[%s %s]", (IS_INST) ? '-' : '+',              \
 412                   (CLASS_NAME), (SEL_NAME));                            \
 413      } while (0)
 414
 415 /* The RTTI data (e.g., __ti4name) is common and public (and static),
 416    but it does need to be referenced via indirect PIC data pointers.
 417    The machopic_define_name calls are telling the machopic subsystem
 418    that the name *is* defined in this module, so it doesn't need to
 419    make them indirect.  */
 420
 421 #undef ASM_DECLARE_OBJECT_NAME
 422 #define ASM_DECLARE_OBJECT_NAME(FILE, NAME, DECL)                       \
 423   do {                                                                  \
 424     const char *xname = NAME;                                           \
 425     if (GET_CODE (XEXP (DECL_RTL (DECL), 0)) != SYMBOL_REF)             \
 426       xname = IDENTIFIER_POINTER (DECL_NAME (DECL));                    \
 427     if (! DECL_ONE_ONLY (DECL) && ! DECL_WEAK (DECL))                   \
 428       if ((TREE_STATIC (DECL)                                           \
 429            && (!DECL_COMMON (DECL) || !TREE_PUBLIC (DECL)))             \
 430           || DECL_INITIAL (DECL))                                       \
 431         machopic_define_name (xname);                                   \
 432     if ((TREE_STATIC (DECL)                                             \
 433          && (!DECL_COMMON (DECL) || !TREE_PUBLIC (DECL)))               \
 434         || DECL_INITIAL (DECL))                                         \
 435       (* targetm.encode_section_info) (DECL, DECL_RTL (DECL), false);   \
 436     ASM_OUTPUT_LABEL (FILE, xname);                                     \
 437     /* Darwin doesn't support zero-size objects, so give them a \
 438        byte.  */                                                        \
 439     if (tree_low_cst (DECL_SIZE_UNIT (DECL), 1) == 0)                   \
 440       assemble_zeros (1);                                               \
 441   } while (0)
 442
 443 #define ASM_DECLARE_FUNCTION_NAME(FILE, NAME, DECL)                     \
 444   do {                                                                  \
 445     const char *xname = NAME;                                           \
 446     if (GET_CODE (XEXP (DECL_RTL (DECL), 0)) != SYMBOL_REF)             \
 447       xname = IDENTIFIER_POINTER (DECL_NAME (DECL));                    \
 448     if (! DECL_ONE_ONLY (DECL) && ! DECL_WEAK (DECL))                   \
 449       if ((TREE_STATIC (DECL)                                           \
 450            && (!DECL_COMMON (DECL) || !TREE_PUBLIC (DECL)))             \
 451           || DECL_INITIAL (DECL))                                       \
 452         machopic_define_name (xname);                                   \
 453     if ((TREE_STATIC (DECL)                                             \
 454          && (!DECL_COMMON (DECL) || !TREE_PUBLIC (DECL)))               \
 455         || DECL_INITIAL (DECL))                                         \
 456       (* targetm.encode_section_info) (DECL, DECL_RTL (DECL), false);   \
 457     ASM_OUTPUT_LABEL (FILE, xname);                                     \
 458   } while (0)
 459
 460 #define ASM_DECLARE_CONSTANT_NAME(FILE, NAME, EXP, SIZE)        \
 461   do {                                                          \
 462     ASM_OUTPUT_LABEL (FILE, NAME);                              \
 463     /* Darwin doesn't support zero-size objects, so give them a \
 464        byte.  */                                                \
 465     if ((SIZE) == 0)                                            \
 466       assemble_zeros (1);                                       \
 467   } while (0)
 468
 469 /* Wrap new method names in quotes so the assembler doesn't gag.
 470    Make Objective-C internal symbols local.  */
 471
 472 #undef  ASM_OUTPUT_LABELREF
 473 #define ASM_OUTPUT_LABELREF(FILE,NAME)                                       \
 474   do {                                                                       \
 475        const char *xname = darwin_strip_name_encoding (NAME);                \
 476        if (! strcmp (xname, "<pic base>"))                                   \
 477          machopic_output_function_base_name(FILE);                           \
 478        else if (xname[0] == '&' || xname[0] == '*')                          \
 479          {                                                                   \
 480            int len = strlen (xname);                                         \
 481            if (len > 6 && !strcmp ("$stub", xname + len - 5))                \
 482              machopic_validate_stub_or_non_lazy_ptr (xname, 1);              \
 483            else if (len > 7 && !strcmp ("$stub\"", xname + len - 6))         \
 484              machopic_validate_stub_or_non_lazy_ptr (xname, 1);              \
 485            else if (len > 14 && !strcmp ("$non_lazy_ptr", xname + len - 13)) \
 486              machopic_validate_stub_or_non_lazy_ptr (xname, 0);              \
 487            fputs (&xname[1], FILE);                                          \
 488          }                                                                   \
 489        else if (xname[0] == '+' || xname[0] == '-')                          \
 490          fprintf (FILE, "\"%s\"", xname);                                    \
 491        else if (!strncmp (xname, "_OBJC_", 6))                               \
 492          fprintf (FILE, "L%s", xname);                                       \
 493        else if (!strncmp (xname, ".objc_class_name_", 17))                   \
 494          fprintf (FILE, "%s", xname);                                        \
 495        else                                                                  \
 496          fprintf (FILE, "_%s", xname);                                       \
 497   } while (0)
 498
 499 /* Output before executable code.  */
 500 #undef TEXT_SECTION_ASM_OP
 501 #define TEXT_SECTION_ASM_OP ".text"
 502
 503 /* Output before writable data.  */
 504
 505 #undef DATA_SECTION_ASM_OP
 506 #define DATA_SECTION_ASM_OP ".data"
 507
 508 #undef  ALIGN_ASM_OP
 509 #define ALIGN_ASM_OP            ".align"
 510
 511 #undef  ASM_OUTPUT_ALIGN
 512 #define ASM_OUTPUT_ALIGN(FILE,LOG)      \
 513   if ((LOG) != 0)                       \
 514     fprintf (FILE, "\t%s %d\n", ALIGN_ASM_OP, (LOG))
 515
 516 /* Ensure correct alignment of bss data.  */
 517
 518 #undef  ASM_OUTPUT_ALIGNED_DECL_LOCAL
 519 #define ASM_OUTPUT_ALIGNED_DECL_LOCAL(FILE, DECL, NAME, SIZE, ALIGN)    \
 520   do {                                                                  \
 521     fputs (".lcomm ", (FILE));                                          \
 522     assemble_name ((FILE), (NAME));                                     \
 523     fprintf ((FILE), ","HOST_WIDE_INT_PRINT_UNSIGNED",%u\n", (SIZE),    \
 524              floor_log2 ((ALIGN) / BITS_PER_UNIT));                     \
 525     if ((DECL) && ((TREE_STATIC (DECL)                                  \
 526          && (!DECL_COMMON (DECL) || !TREE_PUBLIC (DECL)))               \
 527         || DECL_INITIAL (DECL)))                                        \
 528       (* targetm.encode_section_info) (DECL, DECL_RTL (DECL), false);   \
 529     if ((DECL) && ((TREE_STATIC (DECL)                                  \
 530          && (!DECL_COMMON (DECL) || !TREE_PUBLIC (DECL)))               \
 531         || DECL_INITIAL (DECL)))                                        \
 532       machopic_define_name (NAME);                                      \
 533   } while (0)
 534
 535 /* The maximum alignment which the object file format can support.
 536    For Mach-O, this is 2^15.  */
 537
 538 #undef  MAX_OFILE_ALIGNMENT
 539 #define MAX_OFILE_ALIGNMENT 0x8000
 540
 541 /* Create new Mach-O sections.  */
 542
 543 #undef  SECTION_FUNCTION
 544 #define SECTION_FUNCTION(FUNCTION, SECTION, DIRECTIVE, OBJC)            \
 545 extern void FUNCTION (void);                                            \
 546 void                                                                    \
 547 FUNCTION (void)                                                         \
 548 {                                                                       \
 549   if (in_section != SECTION)                                            \
 550     {                                                                   \
 551       if (OBJC)                                                         \
 552         objc_section_init ();                                           \
 553       data_section ();                                                  \
 554       if (asm_out_file)                                                 \
 555         fprintf (asm_out_file, "%s\n", DIRECTIVE);                      \
 556       in_section = SECTION;                                             \
 557     }                                                                   \
 558 }                                                                       \
 559
 560 /* Darwin uses many types of special sections.  */
 561
 562 #undef  EXTRA_SECTIONS
 563 #define EXTRA_SECTIONS                                  \
 564   in_const, in_const_data, in_cstring, in_literal4, in_literal8,        \
 565   in_constructor, in_destructor, in_mod_init, in_mod_term,              \
 566   in_objc_class, in_objc_meta_class, in_objc_category,  \
 567   in_objc_class_vars, in_objc_instance_vars,            \
 568   in_objc_cls_meth, in_objc_inst_meth,                  \
 569   in_objc_cat_cls_meth, in_objc_cat_inst_meth,          \
 570   in_objc_selector_refs,                                \
 571   in_objc_selector_fixup,                               \
 572   in_objc_symbols, in_objc_module_info,                 \
 573   in_objc_protocol, in_objc_string_object,              \
 574   in_objc_constant_string_object,                       \
 575   in_objc_image_info,                                   \
 576   in_objc_class_names, in_objc_meth_var_names,          \
 577   in_objc_meth_var_types, in_objc_cls_refs,             \
 578   in_machopic_nl_symbol_ptr,                            \
 579   in_machopic_lazy_symbol_ptr,                          \
 580   in_machopic_symbol_stub,                              \
 581   in_machopic_symbol_stub1,                             \
 582   in_machopic_picsymbol_stub,                           \
 583   in_machopic_picsymbol_stub1,                          \
 584   in_darwin_exception, in_darwin_eh_frame,              \
 585   num_sections
 586
 587 #undef  EXTRA_SECTION_FUNCTIONS
 588 #define EXTRA_SECTION_FUNCTIONS                 \
 589 static void objc_section_init (void);           \
 590 SECTION_FUNCTION (const_section,                \
 591                   in_const,                     \
 592                   ".const", 0)                  \
 593 SECTION_FUNCTION (const_data_section,           \
 594                   in_const_data,                \
 595                   ".const_data", 0)             \
 596 SECTION_FUNCTION (cstring_section,              \
 597                   in_cstring,                   \
 598                   ".cstring", 0)                \
 599 SECTION_FUNCTION (literal4_section,             \
 600                   in_literal4,                  \
 601                   ".literal4", 0)               \
 602 SECTION_FUNCTION (literal8_section,             \
 603                   in_literal8,                  \
 604                   ".literal8", 0)               \
 605 SECTION_FUNCTION (constructor_section,          \
 606                   in_constructor,               \
 607                   ".constructor", 0)            \
 608 SECTION_FUNCTION (mod_init_section,             \
 609                   in_mod_init,                  \
 610                   ".mod_init_func", 0)  \
 611 SECTION_FUNCTION (mod_term_section, \
 612                   in_mod_term,                  \
 613                   ".mod_term_func", 0)  \
 614 SECTION_FUNCTION (destructor_section,           \
 615                   in_destructor,                \
 616                   ".destructor", 0)             \
 617 SECTION_FUNCTION (objc_class_section,           \
 618                   in_objc_class,                \
 619                   ".objc_class", 1)             \
 620 SECTION_FUNCTION (objc_meta_class_section,      \
 621                   in_objc_meta_class,           \
 622                   ".objc_meta_class", 1)        \
 623 SECTION_FUNCTION (objc_category_section,        \
 624                   in_objc_category,             \
 625                 ".objc_category", 1)            \
 626 SECTION_FUNCTION (objc_class_vars_section,      \
 627                   in_objc_class_vars,           \
 628                   ".objc_class_vars", 1)        \
 629 SECTION_FUNCTION (objc_instance_vars_section,   \
 630                   in_objc_instance_vars,        \
 631                   ".objc_instance_vars", 1)     \
 632 SECTION_FUNCTION (objc_cls_meth_section,        \
 633                   in_objc_cls_meth,             \
 634                   ".objc_cls_meth", 1)  \
 635 SECTION_FUNCTION (objc_inst_meth_section,       \
 636                   in_objc_inst_meth,            \
 637                   ".objc_inst_meth", 1) \
 638 SECTION_FUNCTION (objc_cat_cls_meth_section,    \
 639                   in_objc_cat_cls_meth,         \
 640                   ".objc_cat_cls_meth", 1)      \
 641 SECTION_FUNCTION (objc_cat_inst_meth_section,   \
 642                   in_objc_cat_inst_meth,        \
 643                   ".objc_cat_inst_meth", 1)     \
 644 SECTION_FUNCTION (objc_selector_refs_section,   \
 645                   in_objc_selector_refs,        \
 646                   ".objc_message_refs", 1)      \
 647 SECTION_FUNCTION (objc_selector_fixup_section,  \
 648                   in_objc_selector_fixup,       \
 649                   ".section __OBJC, __sel_fixup", 1)    \
 650 SECTION_FUNCTION (objc_symbols_section,         \
 651                   in_objc_symbols,              \
 652                   ".objc_symbols", 1)   \
 653 SECTION_FUNCTION (objc_module_info_section,     \
 654                   in_objc_module_info,          \
 655                   ".objc_module_info", 1)       \
 656 SECTION_FUNCTION (objc_protocol_section,        \
 657                   in_objc_protocol,             \
 658                   ".objc_protocol", 1)  \
 659 SECTION_FUNCTION (objc_string_object_section,   \
 660                   in_objc_string_object,        \
 661                   ".objc_string_object", 1)     \
 662 SECTION_FUNCTION (objc_constant_string_object_section,  \
 663                   in_objc_constant_string_object,       \
 664                   ".section __OBJC, __cstring_object", 1)       \
 665 /* Fix-and-Continue image marker.  */           \
 666 SECTION_FUNCTION (objc_image_info_section,      \
 667                   in_objc_image_info,           \
 668                   ".section __OBJC, __image_info", 1)   \
 669 SECTION_FUNCTION (objc_class_names_section,     \
 670                 in_objc_class_names,            \
 671                 ".objc_class_names", 1) \
 672 SECTION_FUNCTION (objc_meth_var_names_section,  \
 673                 in_objc_meth_var_names,         \
 674                 ".objc_meth_var_names", 1)      \
 675 SECTION_FUNCTION (objc_meth_var_types_section,  \
 676                 in_objc_meth_var_types,         \
 677                 ".objc_meth_var_types", 1)      \
 678 SECTION_FUNCTION (objc_cls_refs_section,        \
 679                 in_objc_cls_refs,               \
 680                 ".objc_cls_refs", 1)            \
 681                                                 \
 682 SECTION_FUNCTION (machopic_lazy_symbol_ptr_section,     \
 683                 in_machopic_lazy_symbol_ptr,            \
 684                 ".lazy_symbol_pointer", 0)      \
 685 SECTION_FUNCTION (machopic_nl_symbol_ptr_section,       \
 686                 in_machopic_nl_symbol_ptr,              \
 687                 ".non_lazy_symbol_pointer", 0)  \
 688 SECTION_FUNCTION (machopic_symbol_stub_section,         \
 689                 in_machopic_symbol_stub,                \
 690                 ".symbol_stub", 0)              \
 691 SECTION_FUNCTION (machopic_symbol_stub1_section,        \
 692                 in_machopic_symbol_stub1,               \
 693                 ".section __TEXT,__symbol_stub1,symbol_stubs,pure_instructions,16", 0)\
 694 SECTION_FUNCTION (machopic_picsymbol_stub_section,      \
 695                 in_machopic_picsymbol_stub,             \
 696                 ".picsymbol_stub", 0)           \
 697 SECTION_FUNCTION (machopic_picsymbol_stub1_section,     \
 698                 in_machopic_picsymbol_stub1,            \
 699                 ".section __TEXT,__picsymbolstub1,symbol_stubs,pure_instructions,32", 0)\
 700 SECTION_FUNCTION (darwin_exception_section,             \
 701                 in_darwin_exception,                    \
 702                 ".section __DATA,__gcc_except_tab", 0)  \
 703 SECTION_FUNCTION (darwin_eh_frame_section,              \
 704                 in_darwin_eh_frame,                     \
 705                 ".section " EH_FRAME_SECTION_NAME ",__eh_frame" EH_FRAME_SECTION_ATTR, 0)  \
 706                                                         \
 707 static void                                     \
 708 objc_section_init (void)                        \
 709 {                                               \
 710   static int been_here = 0;                     \
 711                                                 \
 712   if (been_here == 0)                           \
 713     {                                           \
 714       been_here = 1;                            \
 715           /* written, cold -> hot */            \
 716       objc_cat_cls_meth_section ();             \
 717       objc_cat_inst_meth_section ();            \
 718       objc_string_object_section ();            \
 719       objc_constant_string_object_section ();   \
 720       objc_selector_refs_section ();            \
 721       objc_selector_fixup_section ();           \
 722       objc_cls_refs_section ();                 \
 723       objc_class_section ();                    \
 724       objc_meta_class_section ();               \
 725           /* shared, hot -> cold */             \
 726       objc_cls_meth_section ();                 \
 727       objc_inst_meth_section ();                \
 728       objc_protocol_section ();                 \
 729       objc_class_names_section ();              \
 730       objc_meth_var_types_section ();           \
 731       objc_meth_var_names_section ();           \
 732       objc_category_section ();                 \
 733       objc_class_vars_section ();               \
 734       objc_instance_vars_section ();            \
 735       objc_module_info_section ();              \
 736       objc_symbols_section ();                  \
 737     }                                           \
 738 }
 739
 740 #define READONLY_DATA_SECTION const_section
 741
 742 #undef  TARGET_ASM_SELECT_SECTION
 743 #define TARGET_ASM_SELECT_SECTION machopic_select_section
 744 #undef  TARGET_ASM_SELECT_RTX_SECTION
 745 #define TARGET_ASM_SELECT_RTX_SECTION machopic_select_rtx_section
 746 #undef  TARGET_ASM_UNIQUE_SECTION
 747 #define TARGET_ASM_UNIQUE_SECTION darwin_unique_section
 748
 749
 750
 751 #define ASM_DECLARE_UNRESOLVED_REFERENCE(FILE,NAME)                     \
 752     do {                                                                \
 753          if (FILE) {                                                    \
 754            if (MACHOPIC_INDIRECT)                                       \
 755              fprintf (FILE, "\t.lazy_reference ");                      \
 756            else                                                         \
 757              fprintf (FILE, "\t.reference ");                           \
 758            assemble_name (FILE, NAME);                                  \
 759            fprintf (FILE, "\n");                                        \
 760          }                                                              \
 761        } while (0)
 762
 763 #define ASM_DECLARE_CLASS_REFERENCE(FILE,NAME)                          \
 764     do {                                                                \
 765          if (FILE) {                                                    \
 766            fprintf (FILE, "\t");                                        \
 767            assemble_name (FILE, NAME);                                  \
 768            fprintf (FILE, "=0\n");                                      \
 769            (*targetm.asm_out.globalize_label) (FILE, NAME);             \
 770          }                                                              \
 771        } while (0)
 772
 773 /* Globalizing directive for a label.  */
 774 #define GLOBAL_ASM_OP ".globl "
 775 #define TARGET_ASM_GLOBALIZE_LABEL darwin_globalize_label
 776
 777 /* Emit an assembler directive to set visibility for a symbol.  Used
 778    to support visibility attribute and Darwin's private extern
 779    feature.  */
 780 #undef TARGET_ASM_ASSEMBLE_VISIBILITY
 781 #define TARGET_ASM_ASSEMBLE_VISIBILITY darwin_assemble_visibility
 782
 783
 784 #undef ASM_GENERATE_INTERNAL_LABEL
 785 #define ASM_GENERATE_INTERNAL_LABEL(LABEL,PREFIX,NUM)   \
 786   sprintf (LABEL, "*%s%ld", PREFIX, (long)(NUM))
 787
 788 /* Since we have a separate readonly data section, define this so that
 789    jump tables end up in text rather than data.  */
 790
 791 #ifndef JUMP_TABLES_IN_TEXT_SECTION
 792 #define JUMP_TABLES_IN_TEXT_SECTION 1
 793 #endif
 794
 795 /* Symbolic names for various things we might know about a symbol.  */
 796
 797 enum machopic_addr_class {
 798   MACHOPIC_UNDEFINED,
 799   MACHOPIC_DEFINED_DATA,
 800   MACHOPIC_UNDEFINED_DATA,
 801   MACHOPIC_DEFINED_FUNCTION,
 802   MACHOPIC_UNDEFINED_FUNCTION
 803 };
 804
 805 /* Macros defining the various PIC cases.  */
 806
 807 #define MACHO_DYNAMIC_NO_PIC_P  (TARGET_DYNAMIC_NO_PIC)
 808 #define MACHOPIC_INDIRECT       (flag_pic || MACHO_DYNAMIC_NO_PIC_P)
 809 #define MACHOPIC_JUST_INDIRECT  (flag_pic == 1 || MACHO_DYNAMIC_NO_PIC_P)
 810 #define MACHOPIC_PURE           (flag_pic == 2 && ! MACHO_DYNAMIC_NO_PIC_P)
 811
 812 #undef TARGET_ENCODE_SECTION_INFO
 813 #define TARGET_ENCODE_SECTION_INFO  darwin_encode_section_info
 814 #undef TARGET_STRIP_NAME_ENCODING
 815 #define TARGET_STRIP_NAME_ENCODING  darwin_strip_name_encoding
 816
 817 #define GEN_BINDER_NAME_FOR_STUB(BUF,STUB,STUB_LENGTH)          \
 818   do {                                                          \
 819     const char *const stub_ = (STUB);                           \
 820     char *buffer_ = (BUF);                                      \
 821     strcpy (buffer_, stub_);                                    \
 822     if (stub_[0] == '"')                                        \
 823       {                                                         \
 824         strcpy (buffer_ + (STUB_LENGTH) - 1, "_binder\"");      \
 825       }                                                         \
 826     else                                                        \
 827       {                                                         \
 828         strcpy (buffer_ + (STUB_LENGTH), "_binder");            \
 829       }                                                         \
 830   } while (0)
 831
 832 #define GEN_SYMBOL_NAME_FOR_SYMBOL(BUF,SYMBOL,SYMBOL_LENGTH)    \
 833   do {                                                          \
 834     const char *const symbol_ = (SYMBOL);                       \
 835     char *buffer_ = (BUF);                                      \
 836     if (name_needs_quotes (symbol_) && symbol_[0] != '"')       \
 837       {                                                         \
 838           sprintf (buffer_, "\"%s\"", symbol_);                 \
 839       }                                                         \
 840     else                                                        \
 841       {                                                         \
 842         strcpy (buffer_, symbol_);                              \
 843       }                                                         \
 844   } while (0)
 845
 846 /* Given a symbol name string, create the lazy pointer version
 847    of the symbol name.  */
 848
 849 #define GEN_LAZY_PTR_NAME_FOR_SYMBOL(BUF,SYMBOL,SYMBOL_LENGTH)  \
 850   do {                                                          \
 851     const char *symbol_ = darwin_strip_name_encoding (SYMBOL);  \
 852     char *buffer_ = (BUF);                                      \
 853     if (symbol_[0] == '"')                                      \
 854       {                                                         \
 855         strcpy (buffer_, "\"L");                                \
 856         strcpy (buffer_ + 2, symbol_ + 1);                      \
 857         strcpy (buffer_ + (SYMBOL_LENGTH), "$lazy_ptr\"");      \
 858       }                                                         \
 859     else if (name_needs_quotes (symbol_))                       \
 860       {                                                         \
 861         strcpy (buffer_, "\"L");                                \
 862         strcpy (buffer_ + 2, symbol_);                          \
 863         strcpy (buffer_ + (SYMBOL_LENGTH) + 2, "$lazy_ptr\"");  \
 864       }                                                         \
 865     else                                                        \
 866       {                                                         \
 867         strcpy (buffer_, "L");                                  \
 868         strcpy (buffer_ + 1, symbol_);                          \
 869         strcpy (buffer_ + (SYMBOL_LENGTH) + 1, "$lazy_ptr");    \
 870       }                                                         \
 871   } while (0)
 872
 873 #define TARGET_ASM_EXCEPTION_SECTION darwin_exception_section
 874
 875 #define TARGET_ASM_EH_FRAME_SECTION darwin_eh_frame_section
 876
 877 #define EH_FRAME_SECTION_NAME   "__TEXT"
 878 #define EH_FRAME_SECTION_ATTR ",coalesced,no_toc+strip_static_syms"
 879
 880 #undef ASM_PREFERRED_EH_DATA_FORMAT
 881 #define ASM_PREFERRED_EH_DATA_FORMAT(CODE,GLOBAL)  \
 882   (((CODE) == 2 && (GLOBAL) == 1) \
 883    ? (DW_EH_PE_pcrel | DW_EH_PE_indirect) : \
 884      ((CODE) == 1 || (GLOBAL) == 0) ? DW_EH_PE_pcrel : DW_EH_PE_absptr)
 885
 886 #define ASM_OUTPUT_DWARF_DELTA(FILE,SIZE,LABEL1,LABEL2)  \
 887   darwin_asm_output_dwarf_delta (FILE, SIZE, LABEL1, LABEL2)
 888
 889 #define ASM_MAYBE_OUTPUT_ENCODED_ADDR_RTX(ASM_OUT_FILE, ENCODING, SIZE, ADDR, DONE)     \
 890       if (ENCODING == ASM_PREFERRED_EH_DATA_FORMAT (2, 1)) {                            \
 891         darwin_non_lazy_pcrel (ASM_OUT_FILE, ADDR);                                     \
 892         goto DONE;                                                                      \
 893       }
 894
 895
 896 #define TARGET_TERMINATE_DW2_EH_FRAME_INFO false
 897
 898 #undef TARGET_ASM_NAMED_SECTION
 899 #define TARGET_ASM_NAMED_SECTION darwin_asm_named_section
 900 #undef TARGET_SECTION_TYPE_FLAGS
 901 #define TARGET_SECTION_TYPE_FLAGS darwin_section_type_flags
 902
 903 #define DARWIN_REGISTER_TARGET_PRAGMAS()                        \
 904   do {                                                          \
 905     c_register_pragma (0, "mark", darwin_pragma_ignore);        \
 906     c_register_pragma (0, "options", darwin_pragma_options);    \
 907     c_register_pragma (0, "segment", darwin_pragma_ignore);     \
 908     c_register_pragma (0, "unused", darwin_pragma_unused);      \
 909   } while (0)
 910
 911 #undef ASM_APP_ON
 912 #define ASM_APP_ON ""
 913 #undef ASM_APP_OFF
 914 #define ASM_APP_OFF ""
 915
 916 void darwin_register_frameworks (int);
 917 #define TARGET_EXTRA_INCLUDES darwin_register_frameworks
 918
 919 void add_framework_path (char *);
 920 #define TARGET_OPTF add_framework_path
 921
 922 #define TARGET_HAS_F_SETLKW
 923
 924 /* Darwin before 7.0 does not have C99 functions.   */
 925 #ifndef TARGET_C99_FUNCTIONS
 926 #define TARGET_C99_FUNCTIONS 0
 927 #endif
 928
 929 #endif /* CONFIG_DARWIN_H */