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    2005
   4    Free Software Foundation, Inc.
   5    Contributed by Apple Computer Inc.
   6
   7 This file is part of GCC.
   8
   9 GCC is free software; you can redistribute it and/or modify
  10 it under the terms of the GNU General Public License as published by
  11 the Free Software Foundation; either version 2, or (at your option)
  12 any later version.
  13
  14 GCC is distributed in the hope that it will be useful,
  15 but WITHOUT ANY WARRANTY; without even the implied warranty of
  16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17 GNU General Public License for more details.
  18
  19 You should have received a copy of the GNU General Public License
  20 along with GCC; see the file COPYING.  If not, write to
  21 the Free Software Foundation, 59 Temple Place - Suite 330,
  22 Boston, MA 02111-1307, USA.  */
  23
  24 #ifndef CONFIG_DARWIN_H
  25 #define CONFIG_DARWIN_H
  26
  27 /* The definitions in this file are common to all processor types
  28    running Darwin, which is the kernel for Mac OS X.  Darwin is
  29    basically a BSD user layer laid over a Mach kernel, then evolved
  30    for many years (at NeXT) in parallel with other Unix systems.  So
  31    while the runtime is a somewhat idiosyncratic Mach-based thing,
  32    other definitions look like they would for a BSD variant.  */
  33
  34 /* Although NeXT ran on many different architectures, as of Jan 2001
  35    the only supported Darwin targets are PowerPC and x86.  */
  36
  37 /* One of Darwin's NeXT legacies is the Mach-O format, which is partly
  38    like a.out and partly like COFF, with additional features like
  39    multi-architecture binary support.  */
  40
  41 #define OBJECT_FORMAT_MACHO
  42
  43 /* Suppress g++ attempt to link in the math library automatically. */
  44 #define MATH_LIBRARY ""
  45
  46 /* We have atexit.  */
  47
  48 #define HAVE_ATEXIT
  49
  50 /* Define an empty body for the function do_global_dtors() in libgcc2.c.  */
  51
  52 #define DO_GLOBAL_DTORS_BODY
  53
  54 /* The string value for __SIZE_TYPE__.  */
  55
  56 #ifndef SIZE_TYPE
  57 #define SIZE_TYPE "long unsigned int"
  58 #endif
  59
  60 /* Type used for ptrdiff_t, as a string used in a declaration.  */
  61
  62 #undef  PTRDIFF_TYPE
  63 #define PTRDIFF_TYPE "int"
  64
  65 /* wchar_t is int.  */
  66
  67 #undef  WCHAR_TYPE
  68 #define WCHAR_TYPE "int"
  69 #undef  WCHAR_TYPE_SIZE
  70 #define WCHAR_TYPE_SIZE 32
  71
  72 /* Default to using the NeXT-style runtime, since that's what is
  73    pre-installed on Darwin systems.  */
  74
  75 #define NEXT_OBJC_RUNTIME
  76
  77 /* Don't default to pcc-struct-return, because gcc is the only compiler, and
  78    we want to retain compatibility with older gcc versions.  */
  79
  80 #undef  DEFAULT_PCC_STRUCT_RETURN
  81 #define DEFAULT_PCC_STRUCT_RETURN 0
  82
  83 /* This table intercepts weirdo options whose names would interfere
  84    with normal driver conventions, and either translates them into
  85    standardly-named options, or adds a 'Z' so that they can get to
  86    specs processing without interference.
  87
  88    Do not expand a linker option to "-Xlinker -<option>", since that
  89    forfeits the ability to control via spec strings later.  However,
  90    as a special exception, do this translation with -filelist, because
  91    otherwise the driver will think there are no input files and quit.
  92    (The alternative would be to hack the driver to recognize -filelist
  93    specially, but it's simpler to use the translation table.)
  94
  95    Note that an option name with a prefix that matches another option
  96    name, that also takes an argument, needs to be modified so the
  97    prefix is different, otherwise a '*' after the shorter option will
  98    match with the longer one.
  99
 100    The SUBTARGET_OPTION_TRANSLATE_TABLE macro, which _must_ be defined
 101    in gcc/config/{i386,rs6000}/darwin.h, should contain any additional
 102    command-line option translations specific to the particular target
 103    architecture.  */
 104
 105 #define TARGET_OPTION_TRANSLATE_TABLE \
 106   { "-all_load", "-Zall_load" },  \
 107   { "-allowable_client", "-Zallowable_client" },  \
 108   { "-arch_errors_fatal", "-Zarch_errors_fatal" },  \
 109   { "-bind_at_load", "-Zbind_at_load" },  \
 110   { "-bundle", "-Zbundle" },  \
 111   { "-bundle_loader", "-Zbundle_loader" },  \
 112   { "-weak_reference_mismatches", "-Zweak_reference_mismatches" },  \
 113   { "-dead_strip", "-Zdead_strip" }, \
 114   { "-no_dead_strip_inits_and_terms", "-Zno_dead_strip_inits_and_terms" }, \
 115   { "-dependency-file", "-MF" }, \
 116   { "-dylib_file", "-Zdylib_file" }, \
 117   { "-dynamic", "-Zdynamic" },  \
 118   { "-dynamiclib", "-Zdynamiclib" },  \
 119   { "-exported_symbols_list", "-Zexported_symbols_list" },  \
 120   { "-gfull", "-g -fno-eliminate-unused-debug-symbols" }, \
 121   { "-gused", "-g -feliminate-unused-debug-symbols" }, \
 122   { "-segaddr", "-Zsegaddr" }, \
 123   { "-segs_read_only_addr", "-Zsegs_read_only_addr" }, \
 124   { "-segs_read_write_addr", "-Zsegs_read_write_addr" }, \
 125   { "-seg_addr_table", "-Zseg_addr_table" }, \
 126   { "-seg_addr_table_filename", "-Zseg_addr_table_filename" }, \
 127   { "-filelist", "-Xlinker -filelist -Xlinker" },  \
 128   { "-framework", "-Xlinker -framework -Xlinker" },  \
 129   { "-flat_namespace", "-Zflat_namespace" },  \
 130   { "-force_cpusubtype_ALL", "-Zforce_cpusubtype_ALL" },  \
 131   { "-force_flat_namespace", "-Zforce_flat_namespace" },  \
 132   { "-image_base", "-Zimage_base" },  \
 133   { "-init", "-Zinit" },  \
 134   { "-install_name", "-Zinstall_name" },  \
 135   { "-multiply_defined_unused", "-Zmultiplydefinedunused" },  \
 136   { "-multiply_defined", "-Zmultiply_defined" },  \
 137   { "-multi_module", "-Zmulti_module" },  \
 138   { "-static", "-static -Wa,-static" },  \
 139   { "-single_module", "-Zsingle_module" },  \
 140   { "-unexported_symbols_list", "-Zunexported_symbols_list" }, \
 141   SUBTARGET_OPTION_TRANSLATE_TABLE
 142
 143 /* Nonzero if the user has chosen to force sizeof(bool) to be 1
 144    by providing the -mone-byte-bool switch.  It would be better
 145    to use SUBTARGET_SWITCHES for this instead of SUBTARGET_OPTIONS,
 146    but there are no more bits in rs6000 TARGET_SWITCHES.  Note
 147    that this switch has no "no-" variant. */
 148 extern const char *darwin_one_byte_bool;
 149
 150 extern int darwin_fix_and_continue;
 151 extern const char *darwin_fix_and_continue_switch;
 152
 153 #undef SUBTARGET_OPTIONS
 154 #define SUBTARGET_OPTIONS \
 155   {"one-byte-bool", &darwin_one_byte_bool, N_("Set sizeof(bool) to 1"), 0 }, \
 156   {"fix-and-continue", &darwin_fix_and_continue_switch,                 \
 157    N_("Generate code suitable for fast turn around debugging"), 0},     \
 158   {"no-fix-and-continue", &darwin_fix_and_continue_switch,              \
 159    N_("Don't generate code suitable for fast turn around debugging"), 0}
 160
 161 /* These compiler options take n arguments.  */
 162
 163 #undef  WORD_SWITCH_TAKES_ARG
 164 #define WORD_SWITCH_TAKES_ARG(STR)              \
 165   (DEFAULT_WORD_SWITCH_TAKES_ARG (STR) ? 1 :    \
 166    !strcmp (STR, "Zallowable_client") ? 1 :     \
 167    !strcmp (STR, "arch") ? 1 :                  \
 168    !strcmp (STR, "arch_only") ? 1 :             \
 169    !strcmp (STR, "Zbundle_loader") ? 1 :        \
 170    !strcmp (STR, "client_name") ? 1 :           \
 171    !strcmp (STR, "compatibility_version") ? 1 : \
 172    !strcmp (STR, "current_version") ? 1 :       \
 173    !strcmp (STR, "Zdylib_file") ? 1 :           \
 174    !strcmp (STR, "Zexported_symbols_list") ? 1 : \
 175    !strcmp (STR, "Zimage_base") ? 1 :           \
 176    !strcmp (STR, "Zinit") ? 1 :                 \
 177    !strcmp (STR, "Zinstall_name") ? 1 :         \
 178    !strcmp (STR, "Zmultiplydefinedunused") ? 1 : \
 179    !strcmp (STR, "Zmultiply_defined") ? 1 :     \
 180    !strcmp (STR, "precomp-trustfile") ? 1 :     \
 181    !strcmp (STR, "read_only_relocs") ? 1 :      \
 182    !strcmp (STR, "sectcreate") ? 3 :            \
 183    !strcmp (STR, "sectorder") ? 3 :             \
 184    !strcmp (STR, "Zsegaddr") ? 2 :              \
 185    !strcmp (STR, "Zsegs_read_only_addr") ? 1 :  \
 186    !strcmp (STR, "Zsegs_read_write_addr") ? 1 : \
 187    !strcmp (STR, "Zseg_addr_table") ? 1 :       \
 188    !strcmp (STR, "Zseg_addr_table_filename") ?1 :\
 189    !strcmp (STR, "seg1addr") ? 1 :              \
 190    !strcmp (STR, "segprot") ? 3 :               \
 191    !strcmp (STR, "sub_library") ? 1 :           \
 192    !strcmp (STR, "sub_umbrella") ? 1 :          \
 193    !strcmp (STR, "umbrella") ? 1 :              \
 194    !strcmp (STR, "undefined") ? 1 :             \
 195    !strcmp (STR, "Zunexported_symbols_list") ? 1 : \
 196    !strcmp (STR, "Zweak_reference_mismatches") ? 1 : \
 197    !strcmp (STR, "pagezero_size") ? 1 :         \
 198    !strcmp (STR, "segs_read_only_addr") ? 1 :   \
 199    !strcmp (STR, "segs_read_write_addr") ? 1 :  \
 200    !strcmp (STR, "sectalign") ? 3 :             \
 201    !strcmp (STR, "sectobjectsymbols") ? 2 :     \
 202    !strcmp (STR, "segcreate") ? 3 :             \
 203    !strcmp (STR, "dylinker_install_name") ? 1 : \
 204    0)
 205
 206 /* Machine dependent cpp options.  __APPLE_CC__ is defined as the
 207    Apple include files expect it to be defined and won't work if it
 208    isn't.  */
 209
 210 #undef  CPP_SPEC
 211 #define CPP_SPEC "%{static:%{!dynamic:-D__STATIC__}}%{!static:-D__DYNAMIC__}\
 212     -D__APPLE_CC__=1"
 213
 214 /* This is mostly a clone of the standard LINK_COMMAND_SPEC, plus
 215    precomp, libtool, and fat build additions.  Also we
 216    don't specify a second %G after %L because libSystem is
 217    self-contained and doesn't need to link against libgcc.a.  */
 218 /* In general, random Darwin linker flags should go into LINK_SPEC
 219    instead of LINK_COMMAND_SPEC.  The command spec is better for
 220    specifying the handling of options understood by generic Unix
 221    linkers, and for positional arguments like libraries.  */
 222 #define LINK_COMMAND_SPEC "\
 223 %{!fdump=*:%{!fsyntax-only:%{!precomp:%{!c:%{!M:%{!MM:%{!E:%{!S:\
 224     %{!Zdynamiclib:%(linker)}%{Zdynamiclib:/usr/bin/libtool} \
 225     %l %X %{d} %{s} %{t} %{Z} \
 226     %{!Zdynamiclib:%{A} %{e*} %{m} %{N} %{n} %{r} %{u*} %{x} %{z}} \
 227     %{@:-o %f%u.out}%{!@:%{o*}%{!o:-o a.out}} \
 228     %{!Zdynamiclib:%{!A:%{!nostdlib:%{!nostartfiles:%S}}}} \
 229     %{L*} %(link_libgcc) %o %{fprofile-arcs|fprofile-generate|coverage:-lgcov} \
 230     %{!nostdlib:%{!nodefaultlibs:%G %L}} \
 231     %{!A:%{!nostdlib:%{!nostartfiles:%E}}} %{T*} %{F*} }}}}}}}}"
 232
 233 /* Please keep the random linker options in alphabetical order (modulo
 234    'Z' and 'no' prefixes).  Options that can only go to one of libtool
 235    or ld must be listed twice, under both !Zdynamiclib and
 236    Zdynamiclib, with one of the cases reporting an error.  */
 237 /* Note that options taking arguments may appear multiple times on a
 238    command line with different arguments each time, so put a * after
 239    their names so all of them get passed.  */
 240 #define LINK_SPEC  \
 241   "%{static}%{!static:-dynamic} \
 242    %{fgnu-runtime:%:replace-outfile(-lobjc -lobjc-gnu)}\
 243    %{!Zdynamiclib: \
 244      %{Zforce_cpusubtype_ALL:-arch %(darwin_arch) -force_cpusubtype_ALL} \
 245      %{!Zforce_cpusubtype_ALL:-arch %(darwin_subarch)} \
 246      %{Zbundle:-bundle} \
 247      %{Zbundle_loader*:-bundle_loader %*} \
 248      %{client_name*} \
 249      %{compatibility_version*:%e-compatibility_version only allowed with -dynamiclib\
 250 } \
 251      %{current_version*:%e-current_version only allowed with -dynamiclib} \
 252      %{Zforce_flat_namespace:-force_flat_namespace} \
 253      %{Zinstall_name*:%e-install_name only allowed with -dynamiclib} \
 254      %{keep_private_externs} \
 255      %{private_bundle} \
 256     } \
 257    %{Zdynamiclib: \
 258      %{Zbundle:%e-bundle not allowed with -dynamiclib} \
 259      %{Zbundle_loader*:%e-bundle_loader not allowed with -dynamiclib} \
 260      %{client_name*:%e-client_name not allowed with -dynamiclib} \
 261      %{compatibility_version*} \
 262      %{current_version*} \
 263      %{Zforce_cpusubtype_ALL:-arch_only %(darwin_arch)} \
 264      %{!Zforce_cpusubtype_ALL: -arch_only %(darwin_subarch)} \
 265      %{Zforce_flat_namespace:%e-force_flat_namespace not allowed with -dynamiclib} \
 266      %{Zinstall_name*:-install_name %*} \
 267      %{keep_private_externs:%e-keep_private_externs not allowed with -dynamiclib} \
 268      %{private_bundle:%e-private_bundle not allowed with -dynamiclib} \
 269     } \
 270    %{Zall_load:-all_load}%{Zdynamiclib:%{!Zall_load:-noall_load}} \
 271    %{Zallowable_client*:-allowable_client %*} \
 272    %{Zbind_at_load:-bind_at_load} \
 273    %{Zarch_errors_fatal:-arch_errors_fatal} \
 274    %{Zdead_strip:-dead_strip} \
 275    %{Zno_dead_strip_inits_and_terms:-no_dead_strip_inits_and_terms} \
 276    %{Zdylib_file*:-dylib_file %*} \
 277    %{Zdynamic:-dynamic}\
 278    %{Zexported_symbols_list*:-exported_symbols_list %*} \
 279    %{Zflat_namespace:-flat_namespace} \
 280    %{headerpad_max_install_names*} \
 281    %{Zimage_base*:-image_base %*} \
 282    %{Zinit*:-init %*} \
 283    %{nomultidefs} \
 284    %{Zmulti_module:-multi_module} %{Zsingle_module:-single_module} \
 285    %{Zmultiply_defined*:-multiply_defined %*} \
 286    %{Zmultiplydefinedunused*:-multiply_defined_unused %*} \
 287    %{prebind} %{noprebind} %{nofixprebinding} %{prebind_all_twolevel_modules} \
 288    %{read_only_relocs} \
 289    %{sectcreate*} %{sectorder*} %{seg1addr*} %{segprot*} \
 290    %{Zsegaddr*:-segaddr %*} \
 291    %{Zsegs_read_only_addr*:-segs_read_only_addr %*} \
 292    %{Zsegs_read_write_addr*:-segs_read_write_addr %*} \
 293    %{Zseg_addr_table*: -seg_addr_table %*} \
 294    %{Zseg_addr_table_filename*:-seg_addr_table_filename %*} \
 295    %{sub_library*} %{sub_umbrella*} \
 296    %{twolevel_namespace} %{twolevel_namespace_hints} \
 297    %{umbrella*} \
 298    %{undefined*} \
 299    %{Zunexported_symbols_list*:-unexported_symbols_list %*} \
 300    %{Zweak_reference_mismatches*:-weak_reference_mismatches %*} \
 301    %{!Zweak_reference_mismatches*:-weak_reference_mismatches non-weak} \
 302    %{X} \
 303    %{y*} \
 304    %{w} \
 305    %{pagezero_size*} %{segs_read_*} %{seglinkedit} %{noseglinkedit}  \
 306    %{sectalign*} %{sectobjectsymbols*} %{segcreate*} %{whyload} \
 307    %{whatsloaded} %{dylinker_install_name*} \
 308    %{dylinker} %{Mach} "
 309
 310
 311 /* Machine dependent libraries but do not redefine it if we already on 7.0 and
 312    above as it needs to link with libmx also.  */
 313
 314 #ifndef LIB_SPEC
 315 #define LIB_SPEC "%{!static:-lSystem}"
 316 #endif
 317
 318 /* -dynamiclib implies -shared-libgcc just like -shared would on linux.  */
 319 #define REAL_LIBGCC_SPEC \
 320    "%{static|static-libgcc:-lgcc -lgcc_eh}\
 321     %{!static:%{!static-libgcc:\
 322       %{!Zdynamiclib:%{!shared-libgcc:-lgcc -lgcc_eh}\
 323       %{shared-libgcc:-lgcc_s -lgcc}} %{Zdynamiclib:-lgcc_s -lgcc}}}"
 324
 325 /* We specify crt0.o as -lcrt0.o so that ld will search the library path.  */
 326 /* We don't want anything to do with crt2.o in the 64-bit case;
 327    testing the PowerPC-specific -m64 flag here is a little irregular,
 328    but it's overkill to make copies of this spec for each target
 329    arch.  */
 330
 331 #undef  STARTFILE_SPEC
 332 #define STARTFILE_SPEC  \
 333   "%{!Zdynamiclib:%{Zbundle:%{!static:-lbundle1.o}} \
 334      %{!Zbundle:%{pg:%{static:-lgcrt0.o} \
 335                      %{!static:%{object:-lgcrt0.o} \
 336                                %{!object:%{preload:-lgcrt0.o} \
 337                                  %{!preload:-lgcrt1.o %{!m64: crt2.o%s}}}}} \
 338                 %{!pg:%{static:-lcrt0.o} \
 339                       %{!static:%{object:-lcrt0.o} \
 340                                 %{!object:%{preload:-lcrt0.o} \
 341                                   %{!preload:-lcrt1.o %{!m64: crt2.o%s}}}}}}}"
 342
 343 /* The native Darwin linker doesn't necessarily place files in the order
 344    that they're specified on the link line.  Thus, it is pointless
 345    to put anything in ENDFILE_SPEC.  */
 346 /* #define ENDFILE_SPEC "" */
 347
 348 /* Default Darwin ASM_SPEC, very simple.  */
 349 #define ASM_SPEC "-arch %(darwin_arch) \
 350   %{Zforce_cpusubtype_ALL:-force_cpusubtype_ALL}"
 351
 352 /* We use Dbx symbol format.  */
 353
 354 #define DBX_DEBUGGING_INFO 1
 355
 356 /* Also enable Dwarf 2 as an option.  */
 357 #define DWARF2_DEBUGGING_INFO
 358 #define PREFERRED_DEBUGGING_TYPE DBX_DEBUG
 359
 360 #define DEBUG_FRAME_SECTION   "__DWARFA,__debug_frame,coalesced,no_toc+strip_static_syms"
 361 #define DEBUG_INFO_SECTION    "__DWARFA,__debug_info"
 362 #define DEBUG_ABBREV_SECTION  "__DWARFA,__debug_abbrev"
 363 #define DEBUG_ARANGES_SECTION "__DWARFA,__debug_aranges"
 364 #define DEBUG_MACINFO_SECTION "__DWARFA,__debug_macinfo"
 365 #define DEBUG_LINE_SECTION    "__DWARFA,__debug_line"
 366 #define DEBUG_LOC_SECTION     "__DWARFA,__debug_loc"
 367 #define DEBUG_PUBNAMES_SECTION        "__DWARFA,__debug_pubnames"
 368 #define DEBUG_STR_SECTION     "__DWARFA,__debug_str"
 369 #define DEBUG_RANGES_SECTION  "__DWARFA,__debug_ranges"
 370
 371 /* When generating stabs debugging, use N_BINCL entries.  */
 372
 373 #define DBX_USE_BINCL
 374
 375 /* There is no limit to the length of stabs strings.  */
 376
 377 #define DBX_CONTIN_LENGTH 0
 378
 379 /* gdb needs a null N_SO at the end of each file for scattered loading.  */
 380
 381 #define DBX_OUTPUT_NULL_N_SO_AT_MAIN_SOURCE_FILE_END
 382
 383 /* GCC's definition of 'one_only' is the same as its definition of 'weak'.  */
 384 #define MAKE_DECL_ONE_ONLY(DECL) (DECL_WEAK (DECL) = 1)
 385
 386 /* Mach-O supports 'weak imports', and 'weak definitions' in coalesced
 387    sections.  machopic_select_section ensures that weak variables go in
 388    coalesced sections.  Weak aliases (or any other kind of aliases) are
 389    not supported.  Weak symbols that aren't visible outside the .s file
 390    are not supported.  */
 391 #define ASM_WEAKEN_DECL(FILE, DECL, NAME, ALIAS)                        \
 392   do {                                                                  \
 393     if (ALIAS)                                                          \
 394       {                                                                 \
 395         warning ("alias definitions not supported in Mach-O; ignored"); \
 396         break;                                                          \
 397       }                                                                 \
 398                                                                         \
 399     if (! DECL_EXTERNAL (DECL) && TREE_PUBLIC (DECL))                   \
 400       targetm.asm_out.globalize_label (FILE, NAME);                     \
 401     if (DECL_EXTERNAL (DECL))                                           \
 402       fputs ("\t.weak_reference ", FILE);                               \
 403     else if (! lookup_attribute ("weak", DECL_ATTRIBUTES (DECL))        \
 404         && lookup_attribute ("weak_import", DECL_ATTRIBUTES (DECL)))    \
 405       break;                                                            \
 406     else if (TREE_PUBLIC (DECL))                                        \
 407       fputs ("\t.weak_definition ", FILE);                              \
 408     else                                                                \
 409       break;                                                            \
 410     assemble_name (FILE, NAME);                                         \
 411     fputc ('\n', FILE);                                                 \
 412   } while (0)
 413
 414 /* Darwin has the pthread routines in libSystem, which every program
 415    links to, so there's no need for weak-ness for that.  */
 416 #define GTHREAD_USE_WEAK 0
 417
 418 /* The Darwin linker imposes two limitations on common symbols: they
 419    can't have hidden visibility, and they can't appear in dylibs.  As
 420    a consequence, we should never use common symbols to represent
 421    vague linkage. */
 422 #undef USE_COMMON_FOR_ONE_ONLY
 423 #define USE_COMMON_FOR_ONE_ONLY 0
 424
 425 /* The Darwin linker doesn't want coalesced symbols to appear in
 426    a static archive's table of contents. */
 427 #undef TARGET_WEAK_NOT_IN_ARCHIVE_TOC
 428 #define TARGET_WEAK_NOT_IN_ARCHIVE_TOC 1
 429
 430 /* We make exception information linkonce. */
 431 #undef TARGET_USES_WEAK_UNWIND_INFO
 432 #define TARGET_USES_WEAK_UNWIND_INFO 1
 433
 434 /* We need to use a nonlocal label for the start of an EH frame: the
 435    Darwin linker requires that a coalesced section start with a label. */
 436 #undef FRAME_BEGIN_LABEL
 437 #define FRAME_BEGIN_LABEL "EH_frame"
 438
 439 /* Emit a label for the FDE corresponding to DECL.  EMPTY means
 440    emit a label for an empty FDE. */
 441 #define TARGET_ASM_EMIT_UNWIND_LABEL darwin_emit_unwind_label
 442
 443 /* Our profiling scheme doesn't LP labels and counter words.  */
 444
 445 #define NO_PROFILE_COUNTERS     1
 446
 447 #undef  INIT_SECTION_ASM_OP
 448 #define INIT_SECTION_ASM_OP
 449
 450 #undef  INVOKE__main
 451
 452 #define TARGET_ASM_CONSTRUCTOR  machopic_asm_out_constructor
 453 #define TARGET_ASM_DESTRUCTOR   machopic_asm_out_destructor
 454
 455 /* Always prefix with an underscore.  */
 456
 457 #define USER_LABEL_PREFIX "_"
 458
 459 /* Don't output a .file directive.  That is only used by the assembler for
 460    error reporting.  */
 461 #undef  TARGET_ASM_FILE_START_FILE_DIRECTIVE
 462 #define TARGET_ASM_FILE_START_FILE_DIRECTIVE false
 463
 464 #undef  TARGET_ASM_FILE_END
 465 #define TARGET_ASM_FILE_END darwin_file_end
 466
 467 #define ASM_OUTPUT_SKIP(FILE,SIZE)  \
 468   fprintf (FILE, "\t.space "HOST_WIDE_INT_PRINT_UNSIGNED"\n", SIZE)
 469
 470 /* Give ObjC methods pretty symbol names.  */
 471
 472 #undef  OBJC_GEN_METHOD_LABEL
 473 #define OBJC_GEN_METHOD_LABEL(BUF,IS_INST,CLASS_NAME,CAT_NAME,SEL_NAME,NUM) \
 474   do { if (CAT_NAME)                                                    \
 475          sprintf (BUF, "%c[%s(%s) %s]", (IS_INST) ? '-' : '+',          \
 476                   (CLASS_NAME), (CAT_NAME), (SEL_NAME));                \
 477        else                                                             \
 478          sprintf (BUF, "%c[%s %s]", (IS_INST) ? '-' : '+',              \
 479                   (CLASS_NAME), (SEL_NAME));                            \
 480      } while (0)
 481
 482 /* The RTTI data (e.g., __ti4name) is common and public (and static),
 483    but it does need to be referenced via indirect PIC data pointers.
 484    The machopic_define_symbol calls are telling the machopic subsystem
 485    that the name *is* defined in this module, so it doesn't need to
 486    make them indirect.  */
 487
 488 #undef ASM_DECLARE_OBJECT_NAME
 489 #define ASM_DECLARE_OBJECT_NAME(FILE, NAME, DECL)                       \
 490   do {                                                                  \
 491     const char *xname = NAME;                                           \
 492     if (GET_CODE (XEXP (DECL_RTL (DECL), 0)) != SYMBOL_REF)             \
 493       xname = IDENTIFIER_POINTER (DECL_NAME (DECL));                    \
 494     if (! DECL_WEAK (DECL)                                              \
 495         && ((TREE_STATIC (DECL)                                         \
 496              && (!DECL_COMMON (DECL) || !TREE_PUBLIC (DECL)))           \
 497             || DECL_INITIAL (DECL)))                                    \
 498         machopic_define_symbol (DECL_RTL (DECL));                       \
 499     if ((TREE_STATIC (DECL)                                             \
 500          && (!DECL_COMMON (DECL) || !TREE_PUBLIC (DECL)))               \
 501         || DECL_INITIAL (DECL))                                         \
 502       (* targetm.encode_section_info) (DECL, DECL_RTL (DECL), false);   \
 503     ASM_OUTPUT_LABEL (FILE, xname);                                     \
 504     /* Darwin doesn't support zero-size objects, so give them a         \
 505        byte.  */                                                        \
 506     if (tree_low_cst (DECL_SIZE_UNIT (DECL), 1) == 0)                   \
 507       assemble_zeros (1);                                               \
 508   } while (0)
 509
 510 #define ASM_DECLARE_FUNCTION_NAME(FILE, NAME, DECL)                     \
 511   do {                                                                  \
 512     const char *xname = NAME;                                           \
 513     if (GET_CODE (XEXP (DECL_RTL (DECL), 0)) != SYMBOL_REF)             \
 514       xname = IDENTIFIER_POINTER (DECL_NAME (DECL));                    \
 515     if (! DECL_WEAK (DECL)                                              \
 516         && ((TREE_STATIC (DECL)                                         \
 517              && (!DECL_COMMON (DECL) || !TREE_PUBLIC (DECL)))           \
 518             || DECL_INITIAL (DECL)))                                    \
 519         machopic_define_symbol (DECL_RTL (DECL));                       \
 520     if ((TREE_STATIC (DECL)                                             \
 521          && (!DECL_COMMON (DECL) || !TREE_PUBLIC (DECL)))               \
 522         || DECL_INITIAL (DECL))                                         \
 523       (* targetm.encode_section_info) (DECL, DECL_RTL (DECL), false);   \
 524     ASM_OUTPUT_LABEL (FILE, xname);                                     \
 525   } while (0)
 526
 527 #define ASM_DECLARE_CONSTANT_NAME(FILE, NAME, EXP, SIZE)        \
 528   do {                                                          \
 529     ASM_OUTPUT_LABEL (FILE, NAME);                              \
 530     /* Darwin doesn't support zero-size objects, so give them a \
 531        byte.  */                                                \
 532     if ((SIZE) == 0)                                            \
 533       assemble_zeros (1);                                       \
 534   } while (0)
 535
 536 /* Wrap new method names in quotes so the assembler doesn't gag.
 537    Make Objective-C internal symbols local.  */
 538
 539 #undef  ASM_OUTPUT_LABELREF
 540 #define ASM_OUTPUT_LABELREF(FILE,NAME)                                       \
 541   do {                                                                       \
 542        const char *xname = (NAME);                                           \
 543        if (! strcmp (xname, "<pic base>"))                                   \
 544          machopic_output_function_base_name(FILE);                           \
 545        else if (xname[0] == '&' || xname[0] == '*')                          \
 546          {                                                                   \
 547            int len = strlen (xname);                                         \
 548            if (len > 6 && !strcmp ("$stub", xname + len - 5))                \
 549              machopic_validate_stub_or_non_lazy_ptr (xname);                 \
 550            else if (len > 7 && !strcmp ("$stub\"", xname + len - 6))         \
 551              machopic_validate_stub_or_non_lazy_ptr (xname);                 \
 552            else if (len > 14 && !strcmp ("$non_lazy_ptr", xname + len - 13)) \
 553              machopic_validate_stub_or_non_lazy_ptr (xname);                 \
 554            fputs (&xname[1], FILE);                                          \
 555          }                                                                   \
 556        else if (xname[0] == '+' || xname[0] == '-')                          \
 557          fprintf (FILE, "\"%s\"", xname);                                    \
 558        else if (!strncmp (xname, "_OBJC_", 6))                               \
 559          fprintf (FILE, "L%s", xname);                                       \
 560        else if (!strncmp (xname, ".objc_class_name_", 17))                   \
 561          fprintf (FILE, "%s", xname);                                        \
 562        else                                                                  \
 563          asm_fprintf (FILE, "%U%s", xname);                                  \
 564   } while (0)
 565
 566 /* Output before executable code.  */
 567 #undef TEXT_SECTION_ASM_OP
 568 #define TEXT_SECTION_ASM_OP "\t.text"
 569
 570 /* Output before writable data.  */
 571
 572 #undef DATA_SECTION_ASM_OP
 573 #define DATA_SECTION_ASM_OP "\t.data"
 574
 575 #undef  ALIGN_ASM_OP
 576 #define ALIGN_ASM_OP            ".align"
 577
 578 #undef  ASM_OUTPUT_ALIGN
 579 #define ASM_OUTPUT_ALIGN(FILE,LOG)      \
 580   if ((LOG) != 0)                       \
 581     fprintf (FILE, "\t%s %d\n", ALIGN_ASM_OP, (LOG))
 582
 583 /* Ensure correct alignment of bss data.  */
 584
 585 #undef  ASM_OUTPUT_ALIGNED_DECL_LOCAL
 586 #define ASM_OUTPUT_ALIGNED_DECL_LOCAL(FILE, DECL, NAME, SIZE, ALIGN)    \
 587   do {                                                                  \
 588     unsigned HOST_WIDE_INT _new_size = SIZE;                            \
 589     fputs (".lcomm ", (FILE));                                          \
 590     assemble_name ((FILE), (NAME));                                     \
 591     if (_new_size == 0) _new_size = 1;                                  \
 592     fprintf ((FILE), ","HOST_WIDE_INT_PRINT_UNSIGNED",%u\n", _new_size, \
 593              floor_log2 ((ALIGN) / BITS_PER_UNIT));                     \
 594     if ((DECL) && ((TREE_STATIC (DECL)                                  \
 595          && (!DECL_COMMON (DECL) || !TREE_PUBLIC (DECL)))               \
 596         || DECL_INITIAL (DECL)))                                        \
 597       {                                                                 \
 598         (* targetm.encode_section_info) (DECL, DECL_RTL (DECL), false); \
 599         machopic_define_symbol (DECL_RTL (DECL));                       \
 600       }                                                                 \
 601   } while (0)
 602
 603 /* The maximum alignment which the object file format can support.
 604    For Mach-O, this is 2^15.  */
 605
 606 #undef  MAX_OFILE_ALIGNMENT
 607 #define MAX_OFILE_ALIGNMENT 0x8000
 608
 609 /* Create new Mach-O sections.  */
 610
 611 #undef  SECTION_FUNCTION
 612 #define SECTION_FUNCTION(FUNCTION, SECTION, DIRECTIVE, OBJC)            \
 613 extern void FUNCTION (void);                                            \
 614 void                                                                    \
 615 FUNCTION (void)                                                         \
 616 {                                                                       \
 617   if (in_section != SECTION)                                            \
 618     {                                                                   \
 619       if (OBJC)                                                         \
 620         objc_section_init ();                                           \
 621       if (asm_out_file)                                                 \
 622         fputs ("\t" DIRECTIVE "\n", asm_out_file);                      \
 623       in_section = SECTION;                                             \
 624       if ((SECTION == in_text_coal)                                     \
 625           || (SECTION == in_text_unlikely)                              \
 626           || (SECTION == in_text_unlikely_coal))                        \
 627         last_text_section = SECTION;                                    \
 628     }                                                                   \
 629 }                                                                       \
 630
 631 /* Darwin uses many types of special sections.  */
 632
 633 #undef  EXTRA_SECTIONS
 634 #define EXTRA_SECTIONS                                                  \
 635   in_text_coal, in_text_unlikely, in_text_unlikely_coal,                \
 636   in_const, in_const_data, in_cstring, in_literal4, in_literal8,        \
 637   in_const_coal, in_const_data_coal, in_data_coal,                      \
 638   in_constructor, in_destructor, in_mod_init, in_mod_term,              \
 639   in_objc_class, in_objc_meta_class, in_objc_category,                  \
 640   in_objc_class_vars, in_objc_instance_vars,                            \
 641   in_objc_cls_meth, in_objc_inst_meth,                                  \
 642   in_objc_cat_cls_meth, in_objc_cat_inst_meth,                          \
 643   in_objc_selector_refs,                                                \
 644   in_objc_selector_fixup,                                               \
 645   in_objc_symbols, in_objc_module_info,                                 \
 646   in_objc_protocol, in_objc_string_object,                              \
 647   in_objc_constant_string_object,                                       \
 648   in_objc_image_info,                                                   \
 649   in_objc_class_names, in_objc_meth_var_names,                          \
 650   in_objc_meth_var_types, in_objc_cls_refs,                             \
 651   in_machopic_nl_symbol_ptr,                                            \
 652   in_machopic_lazy_symbol_ptr,                                          \
 653   in_machopic_symbol_stub,                                              \
 654   in_machopic_symbol_stub1,                                             \
 655   in_machopic_picsymbol_stub,                                           \
 656   in_machopic_picsymbol_stub1,                                          \
 657   in_darwin_exception, in_darwin_eh_frame,                              \
 658   num_sections
 659
 660 #undef  EXTRA_SECTION_FUNCTIONS
 661 #define EXTRA_SECTION_FUNCTIONS                                 \
 662 static void objc_section_init (void);                           \
 663 SECTION_FUNCTION (text_coal_section,                            \
 664                   in_text_coal,                                 \
 665                   ".section __TEXT,__textcoal_nt,coalesced,"    \
 666                     "pure_instructions", 0)                     \
 667 SECTION_FUNCTION (text_unlikely_coal_section,                   \
 668                   in_text_unlikely_coal,                        \
 669                   ".section __TEXT,__text_unlikely_coal,"       \
 670                     "coalesced,pure_instructions", 0)           \
 671 SECTION_FUNCTION (const_section,                                \
 672                   in_const,                                     \
 673                   ".const", 0)                                  \
 674 SECTION_FUNCTION (const_coal_section,                           \
 675                   in_const_coal,                                \
 676                   ".section __TEXT,__const_coal,coalesced", 0)  \
 677 SECTION_FUNCTION (const_data_section,                           \
 678                   in_const_data,                                \
 679                   ".const_data", 0)                             \
 680 SECTION_FUNCTION (const_data_coal_section,                      \
 681                   in_const_data_coal,                           \
 682                   ".section __DATA,__const_coal,coalesced", 0)  \
 683 SECTION_FUNCTION (data_coal_section,                            \
 684                   in_data_coal,                                 \
 685                   ".section __DATA,__datacoal_nt,coalesced", 0) \
 686 SECTION_FUNCTION (cstring_section,                              \
 687                   in_cstring,                                   \
 688                   ".cstring", 0)                                \
 689 SECTION_FUNCTION (literal4_section,                             \
 690                   in_literal4,                                  \
 691                   ".literal4", 0)                               \
 692 SECTION_FUNCTION (literal8_section,                             \
 693                   in_literal8,                                  \
 694                   ".literal8", 0)                               \
 695 SECTION_FUNCTION (constructor_section,                          \
 696                   in_constructor,                               \
 697                   ".constructor", 0)                            \
 698 SECTION_FUNCTION (mod_init_section,                             \
 699                   in_mod_init,                                  \
 700                   ".mod_init_func", 0)                          \
 701 SECTION_FUNCTION (mod_term_section,                             \
 702                   in_mod_term,                                  \
 703                   ".mod_term_func", 0)                          \
 704 SECTION_FUNCTION (destructor_section,                           \
 705                   in_destructor,                                \
 706                   ".destructor", 0)                             \
 707 SECTION_FUNCTION (objc_class_section,                           \
 708                   in_objc_class,                                \
 709                   ".objc_class", 1)                             \
 710 SECTION_FUNCTION (objc_meta_class_section,                      \
 711                   in_objc_meta_class,                           \
 712                   ".objc_meta_class", 1)                        \
 713 SECTION_FUNCTION (objc_category_section,                        \
 714                   in_objc_category,                             \
 715                 ".objc_category", 1)                            \
 716 SECTION_FUNCTION (objc_class_vars_section,                      \
 717                   in_objc_class_vars,                           \
 718                   ".objc_class_vars", 1)                        \
 719 SECTION_FUNCTION (objc_instance_vars_section,                   \
 720                   in_objc_instance_vars,                        \
 721                   ".objc_instance_vars", 1)                     \
 722 SECTION_FUNCTION (objc_cls_meth_section,                        \
 723                   in_objc_cls_meth,                             \
 724                   ".objc_cls_meth", 1)                          \
 725 SECTION_FUNCTION (objc_inst_meth_section,                       \
 726                   in_objc_inst_meth,                            \
 727                   ".objc_inst_meth", 1)                         \
 728 SECTION_FUNCTION (objc_cat_cls_meth_section,                    \
 729                   in_objc_cat_cls_meth,                         \
 730                   ".objc_cat_cls_meth", 1)                      \
 731 SECTION_FUNCTION (objc_cat_inst_meth_section,                   \
 732                   in_objc_cat_inst_meth,                        \
 733                   ".objc_cat_inst_meth", 1)                     \
 734 SECTION_FUNCTION (objc_selector_refs_section,                   \
 735                   in_objc_selector_refs,                        \
 736                   ".objc_message_refs", 1)                      \
 737 SECTION_FUNCTION (objc_selector_fixup_section,                               \
 738                   in_objc_selector_fixup,                                    \
 739                   ".section __OBJC, __sel_fixup, regular, no_dead_strip", 1) \
 740 SECTION_FUNCTION (objc_symbols_section,                                 \
 741                   in_objc_symbols,                                      \
 742                   ".objc_symbols", 1)                                   \
 743 SECTION_FUNCTION (objc_module_info_section,                             \
 744                   in_objc_module_info,                                  \
 745                   ".objc_module_info", 1)                               \
 746 SECTION_FUNCTION (objc_protocol_section,                                \
 747                   in_objc_protocol,                                     \
 748                   ".objc_protocol", 1)                                  \
 749 SECTION_FUNCTION (objc_string_object_section,                           \
 750                   in_objc_string_object,                                \
 751                   ".objc_string_object", 1)                             \
 752 SECTION_FUNCTION (objc_constant_string_object_section,                  \
 753                   in_objc_constant_string_object,                       \
 754                   ".section __OBJC, __cstring_object, regular, "        \
 755                     "no_dead_strip", 1)                                 \
 756 /* Fix-and-Continue image marker.  */                                   \
 757 SECTION_FUNCTION (objc_image_info_section,                              \
 758                   in_objc_image_info,                                   \
 759                   ".section __OBJC, __image_info, regular, "            \
 760                     "no_dead_strip", 1)                                 \
 761 SECTION_FUNCTION (objc_class_names_section,                             \
 762                 in_objc_class_names,                                    \
 763                 ".objc_class_names", 1)                                 \
 764 SECTION_FUNCTION (objc_meth_var_names_section,                          \
 765                 in_objc_meth_var_names,                                 \
 766                 ".objc_meth_var_names", 1)                              \
 767 SECTION_FUNCTION (objc_meth_var_types_section,                          \
 768                 in_objc_meth_var_types,                                 \
 769                 ".objc_meth_var_types", 1)                              \
 770 SECTION_FUNCTION (objc_cls_refs_section,                                \
 771                 in_objc_cls_refs,                                       \
 772                 ".objc_cls_refs", 1)                                    \
 773 \
 774 SECTION_FUNCTION (machopic_lazy_symbol_ptr_section,                     \
 775                 in_machopic_lazy_symbol_ptr,                            \
 776                 ".lazy_symbol_pointer", 0)                              \
 777 SECTION_FUNCTION (machopic_nl_symbol_ptr_section,                       \
 778                 in_machopic_nl_symbol_ptr,                              \
 779                 ".non_lazy_symbol_pointer", 0)                          \
 780 SECTION_FUNCTION (machopic_symbol_stub_section,                         \
 781                 in_machopic_symbol_stub,                                \
 782                 ".symbol_stub", 0)                                      \
 783 SECTION_FUNCTION (machopic_symbol_stub1_section,                        \
 784                 in_machopic_symbol_stub1,                               \
 785                 ".section __TEXT,__symbol_stub1,symbol_stubs,"          \
 786                   "pure_instructions,16", 0)                            \
 787 SECTION_FUNCTION (machopic_picsymbol_stub_section,                      \
 788                 in_machopic_picsymbol_stub,                             \
 789                 ".picsymbol_stub", 0)                                   \
 790 SECTION_FUNCTION (machopic_picsymbol_stub1_section,                     \
 791                 in_machopic_picsymbol_stub1,                            \
 792                 ".section __TEXT,__picsymbolstub1,symbol_stubs,"        \
 793                   "pure_instructions,32", 0)                            \
 794 SECTION_FUNCTION (darwin_exception_section,                             \
 795                 in_darwin_exception,                                    \
 796                 ".section __DATA,__gcc_except_tab", 0)                  \
 797 SECTION_FUNCTION (darwin_eh_frame_section,                              \
 798                 in_darwin_eh_frame,                                     \
 799                 ".section " EH_FRAME_SECTION_NAME ",__eh_frame"         \
 800                   EH_FRAME_SECTION_ATTR, 0)                             \
 801 \
 802 static void                                     \
 803 objc_section_init (void)                        \
 804 {                                               \
 805   static int been_here = 0;                     \
 806                                                 \
 807   if (been_here == 0)                           \
 808     {                                           \
 809       been_here = 1;                            \
 810           /* written, cold -> hot */            \
 811       objc_cat_cls_meth_section ();             \
 812       objc_cat_inst_meth_section ();            \
 813       objc_string_object_section ();            \
 814       objc_constant_string_object_section ();   \
 815       objc_selector_refs_section ();            \
 816       objc_selector_fixup_section ();           \
 817       objc_cls_refs_section ();                 \
 818       objc_class_section ();                    \
 819       objc_meta_class_section ();               \
 820           /* shared, hot -> cold */             \
 821       objc_cls_meth_section ();                 \
 822       objc_inst_meth_section ();                \
 823       objc_protocol_section ();                 \
 824       objc_class_names_section ();              \
 825       objc_meth_var_types_section ();           \
 826       objc_meth_var_names_section ();           \
 827       objc_category_section ();                 \
 828       objc_class_vars_section ();               \
 829       objc_instance_vars_section ();            \
 830       objc_module_info_section ();              \
 831       objc_symbols_section ();                  \
 832     }                                           \
 833 }
 834
 835 #define READONLY_DATA_SECTION const_section
 836
 837 #undef  TARGET_ASM_SELECT_SECTION
 838 #define TARGET_ASM_SELECT_SECTION machopic_select_section
 839 #define USE_SELECT_SECTION_FOR_FUNCTIONS
 840
 841 #undef  TARGET_ASM_SELECT_RTX_SECTION
 842 #define TARGET_ASM_SELECT_RTX_SECTION machopic_select_rtx_section
 843 #undef  TARGET_ASM_UNIQUE_SECTION
 844 #define TARGET_ASM_UNIQUE_SECTION darwin_unique_section
 845 #undef  TARGET_ASM_FUNCTION_RODATA_SECTION
 846 #define TARGET_ASM_FUNCTION_RODATA_SECTION default_no_function_rodata_section
 847
 848
 849 #define ASM_DECLARE_UNRESOLVED_REFERENCE(FILE,NAME)                     \
 850     do {                                                                \
 851          if (FILE) {                                                    \
 852            if (MACHOPIC_INDIRECT)                                       \
 853              fprintf (FILE, "\t.lazy_reference ");                      \
 854            else                                                         \
 855              fprintf (FILE, "\t.reference ");                           \
 856            assemble_name (FILE, NAME);                                  \
 857            fprintf (FILE, "\n");                                        \
 858          }                                                              \
 859        } while (0)
 860
 861 #define ASM_DECLARE_CLASS_REFERENCE(FILE,NAME)                          \
 862     do {                                                                \
 863          if (FILE) {                                                    \
 864            fprintf (FILE, "\t");                                        \
 865            assemble_name (FILE, NAME);                                  \
 866            fprintf (FILE, "=0\n");                                      \
 867            (*targetm.asm_out.globalize_label) (FILE, NAME);             \
 868          }                                                              \
 869        } while (0)
 870
 871 /* Globalizing directive for a label.  */
 872 #define GLOBAL_ASM_OP ".globl "
 873 #define TARGET_ASM_GLOBALIZE_LABEL darwin_globalize_label
 874
 875 /* Emit an assembler directive to set visibility for a symbol.  Used
 876    to support visibility attribute and Darwin's private extern
 877    feature.  */
 878 #undef TARGET_ASM_ASSEMBLE_VISIBILITY
 879 #define TARGET_ASM_ASSEMBLE_VISIBILITY darwin_assemble_visibility
 880
 881 /* Extra attributes for Darwin.  */
 882 #define SUBTARGET_ATTRIBUTE_TABLE                                            \
 883   /* { name, min_len, max_len, decl_req, type_req, fn_type_req, handler } */ \
 884   { "weak_import", 0, 0, true, false, false,                                 \
 885     darwin_handle_weak_import_attribute }
 886
 887 #undef ASM_GENERATE_INTERNAL_LABEL
 888 #define ASM_GENERATE_INTERNAL_LABEL(LABEL,PREFIX,NUM)   \
 889   sprintf (LABEL, "*%s%ld", PREFIX, (long)(NUM))
 890
 891 #undef TARGET_ASM_MARK_DECL_PRESERVED
 892 #define TARGET_ASM_MARK_DECL_PRESERVED darwin_mark_decl_preserved
 893
 894 /* Set on a symbol with SYMBOL_FLAG_FUNCTION or
 895    MACHO_SYMBOL_FLAG_VARIABLE to indicate that the function or
 896    variable has been defined in this translation unit.  */
 897
 898 #define MACHO_SYMBOL_FLAG_VARIABLE (SYMBOL_FLAG_MACH_DEP)
 899 #define MACHO_SYMBOL_FLAG_DEFINED ((SYMBOL_FLAG_MACH_DEP) << 1)
 900
 901 /* Set on a symbol to indicate when fix-and-continue style code
 902    generation is being used and the symbol refers to a static symbol
 903    that should be rebound from new instances of a translation unit to
 904    the original instance of the data.  */
 905
 906 #define MACHO_SYMBOL_STATIC ((SYMBOL_FLAG_MACH_DEP) << 2)
 907
 908 /* Symbolic names for various things we might know about a symbol.  */
 909
 910 enum machopic_addr_class {
 911   MACHOPIC_UNDEFINED,
 912   MACHOPIC_DEFINED_DATA,
 913   MACHOPIC_UNDEFINED_DATA,
 914   MACHOPIC_DEFINED_FUNCTION,
 915   MACHOPIC_UNDEFINED_FUNCTION
 916 };
 917
 918 /* Macros defining the various PIC cases.  */
 919
 920 #define MACHO_DYNAMIC_NO_PIC_P  (TARGET_DYNAMIC_NO_PIC)
 921 #define MACHOPIC_INDIRECT       (flag_pic || MACHO_DYNAMIC_NO_PIC_P)
 922 #define MACHOPIC_JUST_INDIRECT  (flag_pic == 1 || MACHO_DYNAMIC_NO_PIC_P)
 923 #define MACHOPIC_PURE           (flag_pic == 2 && ! MACHO_DYNAMIC_NO_PIC_P)
 924
 925 #undef TARGET_ENCODE_SECTION_INFO
 926 #define TARGET_ENCODE_SECTION_INFO  darwin_encode_section_info
 927 #undef TARGET_STRIP_NAME_ENCODING
 928 #define TARGET_STRIP_NAME_ENCODING  default_strip_name_encoding
 929
 930 #define GEN_BINDER_NAME_FOR_STUB(BUF,STUB,STUB_LENGTH)          \
 931   do {                                                          \
 932     const char *const stub_ = (STUB);                           \
 933     char *buffer_ = (BUF);                                      \
 934     strcpy (buffer_, stub_);                                    \
 935     if (stub_[0] == '"')                                        \
 936       {                                                         \
 937         strcpy (buffer_ + (STUB_LENGTH) - 1, "_binder\"");      \
 938       }                                                         \
 939     else                                                        \
 940       {                                                         \
 941         strcpy (buffer_ + (STUB_LENGTH), "_binder");            \
 942       }                                                         \
 943   } while (0)
 944
 945 #define GEN_SYMBOL_NAME_FOR_SYMBOL(BUF,SYMBOL,SYMBOL_LENGTH)    \
 946   do {                                                          \
 947     const char *const symbol_ = (SYMBOL);                       \
 948     char *buffer_ = (BUF);                                      \
 949     if (name_needs_quotes (symbol_) && symbol_[0] != '"')       \
 950       {                                                         \
 951           sprintf (buffer_, "\"%s\"", symbol_);                 \
 952       }                                                         \
 953     else                                                        \
 954       {                                                         \
 955         strcpy (buffer_, symbol_);                              \
 956       }                                                         \
 957   } while (0)
 958
 959 /* Given a symbol name string, create the lazy pointer version
 960    of the symbol name.  */
 961
 962 #define GEN_LAZY_PTR_NAME_FOR_SYMBOL(BUF,SYMBOL,SYMBOL_LENGTH)  \
 963   do {                                                          \
 964     const char *symbol_ = (SYMBOL);                             \
 965     char *buffer_ = (BUF);                                      \
 966     if (symbol_[0] == '"')                                      \
 967       {                                                         \
 968         strcpy (buffer_, "\"L");                                \
 969         strcpy (buffer_ + 2, symbol_ + 1);                      \
 970         strcpy (buffer_ + (SYMBOL_LENGTH), "$lazy_ptr\"");      \
 971       }                                                         \
 972     else if (name_needs_quotes (symbol_))                       \
 973       {                                                         \
 974         strcpy (buffer_, "\"L");                                \
 975         strcpy (buffer_ + 2, symbol_);                          \
 976         strcpy (buffer_ + (SYMBOL_LENGTH) + 2, "$lazy_ptr\"");  \
 977       }                                                         \
 978     else                                                        \
 979       {                                                         \
 980         strcpy (buffer_, "L");                                  \
 981         strcpy (buffer_ + 1, symbol_);                          \
 982         strcpy (buffer_ + (SYMBOL_LENGTH) + 1, "$lazy_ptr");    \
 983       }                                                         \
 984   } while (0)
 985
 986 #define TARGET_ASM_EXCEPTION_SECTION darwin_exception_section
 987
 988 #define TARGET_ASM_EH_FRAME_SECTION darwin_eh_frame_section
 989
 990 #define EH_FRAME_SECTION_NAME   "__TEXT"
 991 #define EH_FRAME_SECTION_ATTR ",coalesced,no_toc+strip_static_syms+live_support"
 992
 993 /* Java runtime class list.  */
 994 #define JCR_SECTION_NAME "__DATA,jcr,regular,no_dead_strip"
 995
 996 #undef ASM_PREFERRED_EH_DATA_FORMAT
 997 #define ASM_PREFERRED_EH_DATA_FORMAT(CODE,GLOBAL)  \
 998   (((CODE) == 2 && (GLOBAL) == 1) \
 999    ? (DW_EH_PE_pcrel | DW_EH_PE_indirect | DW_EH_PE_sdata4) : \
1000      ((CODE) == 1 || (GLOBAL) == 0) ? DW_EH_PE_pcrel : DW_EH_PE_absptr)
1001
1002 #define ASM_OUTPUT_DWARF_DELTA(FILE,SIZE,LABEL1,LABEL2)  \
1003   darwin_asm_output_dwarf_delta (FILE, SIZE, LABEL1, LABEL2)
1004
1005 #define ASM_MAYBE_OUTPUT_ENCODED_ADDR_RTX(ASM_OUT_FILE, ENCODING, SIZE, ADDR, DONE)     \
1006       if (ENCODING == ASM_PREFERRED_EH_DATA_FORMAT (2, 1)) {                            \
1007         darwin_non_lazy_pcrel (ASM_OUT_FILE, ADDR);                                     \
1008         goto DONE;                                                                      \
1009       }
1010
1011 /* Experimentally, putting jump tables in text is faster on SPEC.
1012    Also this is needed for correctness for coalesced functions.  */
1013
1014 #ifndef JUMP_TABLES_IN_TEXT_SECTION
1015 #define JUMP_TABLES_IN_TEXT_SECTION 1
1016 #endif
1017
1018 #define TARGET_TERMINATE_DW2_EH_FRAME_INFO false
1019
1020 #undef TARGET_ASM_NAMED_SECTION
1021 #define TARGET_ASM_NAMED_SECTION darwin_asm_named_section
1022
1023 #define DARWIN_REGISTER_TARGET_PRAGMAS()                        \
1024   do {                                                          \
1025     c_register_pragma (0, "mark", darwin_pragma_ignore);        \
1026     c_register_pragma (0, "options", darwin_pragma_options);    \
1027     c_register_pragma (0, "segment", darwin_pragma_ignore);     \
1028     c_register_pragma (0, "unused", darwin_pragma_unused);      \
1029   } while (0)
1030
1031 #undef ASM_APP_ON
1032 #define ASM_APP_ON ""
1033 #undef ASM_APP_OFF
1034 #define ASM_APP_OFF ""
1035
1036 void darwin_register_frameworks (const char *, const char *, int);
1037 void darwin_register_objc_includes (const char *, const char *, int);
1038 #define TARGET_EXTRA_PRE_INCLUDES darwin_register_objc_includes
1039 #define TARGET_EXTRA_INCLUDES darwin_register_frameworks
1040
1041 void add_framework_path (char *);
1042 #define TARGET_OPTF add_framework_path
1043
1044 #define TARGET_HAS_F_SETLKW
1045
1046 /* Darwin before 7.0 does not have C99 functions.   */
1047 #ifndef TARGET_C99_FUNCTIONS
1048 #define TARGET_C99_FUNCTIONS 0
1049 #endif
1050
1051 #define WINT_TYPE "int"
1052
1053 #endif /* CONFIG_DARWIN_H */