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