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 /* These compiler options take n arguments.  */
 144
 145 #undef  WORD_SWITCH_TAKES_ARG
 146 #define WORD_SWITCH_TAKES_ARG(STR)              \
 147   (DEFAULT_WORD_SWITCH_TAKES_ARG (STR) ? 1 :    \
 148    !strcmp (STR, "Zallowable_client") ? 1 :     \
 149    !strcmp (STR, "arch") ? 1 :                  \
 150    !strcmp (STR, "arch_only") ? 1 :             \
 151    !strcmp (STR, "Zbundle_loader") ? 1 :        \
 152    !strcmp (STR, "client_name") ? 1 :           \
 153    !strcmp (STR, "compatibility_version") ? 1 : \
 154    !strcmp (STR, "current_version") ? 1 :       \
 155    !strcmp (STR, "Zdylib_file") ? 1 :           \
 156    !strcmp (STR, "Zexported_symbols_list") ? 1 : \
 157    !strcmp (STR, "Zimage_base") ? 1 :           \
 158    !strcmp (STR, "Zinit") ? 1 :                 \
 159    !strcmp (STR, "Zinstall_name") ? 1 :         \
 160    !strcmp (STR, "Zmultiplydefinedunused") ? 1 : \
 161    !strcmp (STR, "Zmultiply_defined") ? 1 :     \
 162    !strcmp (STR, "precomp-trustfile") ? 1 :     \
 163    !strcmp (STR, "read_only_relocs") ? 1 :      \
 164    !strcmp (STR, "sectcreate") ? 3 :            \
 165    !strcmp (STR, "sectorder") ? 3 :             \
 166    !strcmp (STR, "Zsegaddr") ? 2 :              \
 167    !strcmp (STR, "Zsegs_read_only_addr") ? 1 :  \
 168    !strcmp (STR, "Zsegs_read_write_addr") ? 1 : \
 169    !strcmp (STR, "Zseg_addr_table") ? 1 :       \
 170    !strcmp (STR, "Zseg_addr_table_filename") ?1 :\
 171    !strcmp (STR, "seg1addr") ? 1 :              \
 172    !strcmp (STR, "segprot") ? 3 :               \
 173    !strcmp (STR, "sub_library") ? 1 :           \
 174    !strcmp (STR, "sub_umbrella") ? 1 :          \
 175    !strcmp (STR, "umbrella") ? 1 :              \
 176    !strcmp (STR, "undefined") ? 1 :             \
 177    !strcmp (STR, "Zunexported_symbols_list") ? 1 : \
 178    !strcmp (STR, "Zweak_reference_mismatches") ? 1 : \
 179    !strcmp (STR, "pagezero_size") ? 1 :         \
 180    !strcmp (STR, "segs_read_only_addr") ? 1 :   \
 181    !strcmp (STR, "segs_read_write_addr") ? 1 :  \
 182    !strcmp (STR, "sectalign") ? 3 :             \
 183    !strcmp (STR, "sectobjectsymbols") ? 2 :     \
 184    !strcmp (STR, "segcreate") ? 3 :             \
 185    !strcmp (STR, "dylinker_install_name") ? 1 : \
 186    0)
 187
 188 /* Machine dependent cpp options.  __APPLE_CC__ is defined as the
 189    Apple include files expect it to be defined and won't work if it
 190    isn't.  */
 191
 192 #undef  CPP_SPEC
 193 #define CPP_SPEC "%{static:%{!dynamic:-D__STATIC__}}%{!static:-D__DYNAMIC__}\
 194     -D__APPLE_CC__=1"
 195
 196 /* This is mostly a clone of the standard LINK_COMMAND_SPEC, plus
 197    precomp, libtool, and fat build additions.  Also we
 198    don't specify a second %G after %L because libSystem is
 199    self-contained and doesn't need to link against libgcc.a.  */
 200 /* In general, random Darwin linker flags should go into LINK_SPEC
 201    instead of LINK_COMMAND_SPEC.  The command spec is better for
 202    specifying the handling of options understood by generic Unix
 203    linkers, and for positional arguments like libraries.  */
 204 #define LINK_COMMAND_SPEC "\
 205 %{!fdump=*:%{!fsyntax-only:%{!precomp:%{!c:%{!M:%{!MM:%{!E:%{!S:\
 206     %{!Zdynamiclib:%(linker)}%{Zdynamiclib:/usr/bin/libtool} \
 207     %l %X %{d} %{s} %{t} %{Z} \
 208     %{!Zdynamiclib:%{A} %{e*} %{m} %{N} %{n} %{r} %{u*} %{x} %{z}} \
 209     %{@:-o %f%u.out}%{!@:%{o*}%{!o:-o a.out}} \
 210     %{!Zdynamiclib:%{!A:%{!nostdlib:%{!nostartfiles:%S}}}} \
 211     %{L*} %(link_libgcc) %o %{fprofile-arcs|fprofile-generate|coverage:-lgcov} \
 212     %{!nostdlib:%{!nodefaultlibs:%G %L}} \
 213     %{!A:%{!nostdlib:%{!nostartfiles:%E}}} %{T*} %{F*} }}}}}}}}"
 214
 215 /* Please keep the random linker options in alphabetical order (modulo
 216    'Z' and 'no' prefixes).  Options that can only go to one of libtool
 217    or ld must be listed twice, under both !Zdynamiclib and
 218    Zdynamiclib, with one of the cases reporting an error.  */
 219 /* Note that options taking arguments may appear multiple times on a
 220    command line with different arguments each time, so put a * after
 221    their names so all of them get passed.  */
 222 #define LINK_SPEC  \
 223   "%{static}%{!static:-dynamic} \
 224    %{fgnu-runtime:%:replace-outfile(-lobjc -lobjc-gnu)}\
 225    %{!Zdynamiclib: \
 226      %{Zforce_cpusubtype_ALL:-arch %(darwin_arch) -force_cpusubtype_ALL} \
 227      %{!Zforce_cpusubtype_ALL:-arch %(darwin_subarch)} \
 228      %{Zbundle:-bundle} \
 229      %{Zbundle_loader*:-bundle_loader %*} \
 230      %{client_name*} \
 231      %{compatibility_version*:%e-compatibility_version only allowed with -dynamiclib\
 232 } \
 233      %{current_version*:%e-current_version only allowed with -dynamiclib} \
 234      %{Zforce_flat_namespace:-force_flat_namespace} \
 235      %{Zinstall_name*:%e-install_name only allowed with -dynamiclib} \
 236      %{keep_private_externs} \
 237      %{private_bundle} \
 238     } \
 239    %{Zdynamiclib: \
 240      %{Zbundle:%e-bundle not allowed with -dynamiclib} \
 241      %{Zbundle_loader*:%e-bundle_loader not allowed with -dynamiclib} \
 242      %{client_name*:%e-client_name not allowed with -dynamiclib} \
 243      %{compatibility_version*} \
 244      %{current_version*} \
 245      %{Zforce_cpusubtype_ALL:-arch_only %(darwin_arch)} \
 246      %{!Zforce_cpusubtype_ALL: -arch_only %(darwin_subarch)} \
 247      %{Zforce_flat_namespace:%e-force_flat_namespace not allowed with -dynamiclib} \
 248      %{Zinstall_name*:-install_name %*} \
 249      %{keep_private_externs:%e-keep_private_externs not allowed with -dynamiclib} \
 250      %{private_bundle:%e-private_bundle not allowed with -dynamiclib} \
 251     } \
 252    %{Zall_load:-all_load}%{Zdynamiclib:%{!Zall_load:-noall_load}} \
 253    %{Zallowable_client*:-allowable_client %*} \
 254    %{Zbind_at_load:-bind_at_load} \
 255    %{Zarch_errors_fatal:-arch_errors_fatal} \
 256    %{Zdead_strip:-dead_strip} \
 257    %{Zno_dead_strip_inits_and_terms:-no_dead_strip_inits_and_terms} \
 258    %{Zdylib_file*:-dylib_file %*} \
 259    %{Zdynamic:-dynamic}\
 260    %{Zexported_symbols_list*:-exported_symbols_list %*} \
 261    %{Zflat_namespace:-flat_namespace} \
 262    %{headerpad_max_install_names*} \
 263    %{Zimage_base*:-image_base %*} \
 264    %{Zinit*:-init %*} \
 265    %{nomultidefs} \
 266    %{Zmulti_module:-multi_module} %{Zsingle_module:-single_module} \
 267    %{Zmultiply_defined*:-multiply_defined %*} \
 268    %{Zmultiplydefinedunused*:-multiply_defined_unused %*} \
 269    %{prebind} %{noprebind} %{nofixprebinding} %{prebind_all_twolevel_modules} \
 270    %{read_only_relocs} \
 271    %{sectcreate*} %{sectorder*} %{seg1addr*} %{segprot*} \
 272    %{Zsegaddr*:-segaddr %*} \
 273    %{Zsegs_read_only_addr*:-segs_read_only_addr %*} \
 274    %{Zsegs_read_write_addr*:-segs_read_write_addr %*} \
 275    %{Zseg_addr_table*: -seg_addr_table %*} \
 276    %{Zseg_addr_table_filename*:-seg_addr_table_filename %*} \
 277    %{sub_library*} %{sub_umbrella*} \
 278    %{twolevel_namespace} %{twolevel_namespace_hints} \
 279    %{umbrella*} \
 280    %{undefined*} \
 281    %{Zunexported_symbols_list*:-unexported_symbols_list %*} \
 282    %{Zweak_reference_mismatches*:-weak_reference_mismatches %*} \
 283    %{!Zweak_reference_mismatches*:-weak_reference_mismatches non-weak} \
 284    %{X} \
 285    %{y*} \
 286    %{w} \
 287    %{pagezero_size*} %{segs_read_*} %{seglinkedit} %{noseglinkedit}  \
 288    %{sectalign*} %{sectobjectsymbols*} %{segcreate*} %{whyload} \
 289    %{whatsloaded} %{dylinker_install_name*} \
 290    %{dylinker} %{Mach} "
 291
 292
 293 /* Machine dependent libraries but do not redefine it if we already on 7.0 and
 294    above as it needs to link with libmx also.  */
 295
 296 #ifndef LIB_SPEC
 297 #define LIB_SPEC "%{!static:-lSystem}"
 298 #endif
 299
 300 /* -dynamiclib implies -shared-libgcc just like -shared would on linux.  */
 301 #define REAL_LIBGCC_SPEC \
 302    "%{static|static-libgcc:-lgcc -lgcc_eh}\
 303     %{!static:%{!static-libgcc:\
 304       %{!Zdynamiclib:%{!shared-libgcc:-lgcc -lgcc_eh}\
 305       %{shared-libgcc:-lgcc_s -lgcc}} %{Zdynamiclib:-lgcc_s -lgcc}}}"
 306
 307 /* We specify crt0.o as -lcrt0.o so that ld will search the library path.  */
 308 /* We don't want anything to do with crt2.o in the 64-bit case;
 309    testing the PowerPC-specific -m64 flag here is a little irregular,
 310    but it's overkill to make copies of this spec for each target
 311    arch.  */
 312
 313 #undef  STARTFILE_SPEC
 314 #define STARTFILE_SPEC  \
 315   "%{!Zdynamiclib:%{Zbundle:%{!static:-lbundle1.o}} \
 316      %{!Zbundle:%{pg:%{static:-lgcrt0.o} \
 317                      %{!static:%{object:-lgcrt0.o} \
 318                                %{!object:%{preload:-lgcrt0.o} \
 319                                  %{!preload:-lgcrt1.o %{!m64: crt2.o%s}}}}} \
 320                 %{!pg:%{static:-lcrt0.o} \
 321                       %{!static:%{object:-lcrt0.o} \
 322                                 %{!object:%{preload:-lcrt0.o} \
 323                                   %{!preload:-lcrt1.o %{!m64: crt2.o%s}}}}}}}"
 324
 325 /* The native Darwin linker doesn't necessarily place files in the order
 326    that they're specified on the link line.  Thus, it is pointless
 327    to put anything in ENDFILE_SPEC.  */
 328 /* #define ENDFILE_SPEC "" */
 329
 330 /* Default Darwin ASM_SPEC, very simple.  */
 331 #define ASM_SPEC "-arch %(darwin_arch) \
 332   %{Zforce_cpusubtype_ALL:-force_cpusubtype_ALL}"
 333
 334 /* We use Dbx symbol format.  */
 335
 336 #define DBX_DEBUGGING_INFO 1
 337
 338 /* Also enable Dwarf 2 as an option.  */
 339 #define DWARF2_DEBUGGING_INFO
 340 #define PREFERRED_DEBUGGING_TYPE DBX_DEBUG
 341
 342 #define DEBUG_FRAME_SECTION   "__DWARFA,__debug_frame,coalesced,no_toc+strip_static_syms"
 343 #define DEBUG_INFO_SECTION    "__DWARFA,__debug_info"
 344 #define DEBUG_ABBREV_SECTION  "__DWARFA,__debug_abbrev"
 345 #define DEBUG_ARANGES_SECTION "__DWARFA,__debug_aranges"
 346 #define DEBUG_MACINFO_SECTION "__DWARFA,__debug_macinfo"
 347 #define DEBUG_LINE_SECTION    "__DWARFA,__debug_line"
 348 #define DEBUG_LOC_SECTION     "__DWARFA,__debug_loc"
 349 #define DEBUG_PUBNAMES_SECTION        "__DWARFA,__debug_pubnames"
 350 #define DEBUG_STR_SECTION     "__DWARFA,__debug_str"
 351 #define DEBUG_RANGES_SECTION  "__DWARFA,__debug_ranges"
 352
 353 /* When generating stabs debugging, use N_BINCL entries.  */
 354
 355 #define DBX_USE_BINCL
 356
 357 /* There is no limit to the length of stabs strings.  */
 358
 359 #define DBX_CONTIN_LENGTH 0
 360
 361 /* gdb needs a null N_SO at the end of each file for scattered loading.  */
 362
 363 #define DBX_OUTPUT_NULL_N_SO_AT_MAIN_SOURCE_FILE_END
 364
 365 /* GCC's definition of 'one_only' is the same as its definition of 'weak'.  */
 366 #define MAKE_DECL_ONE_ONLY(DECL) (DECL_WEAK (DECL) = 1)
 367
 368 /* Mach-O supports 'weak imports', and 'weak definitions' in coalesced
 369    sections.  machopic_select_section ensures that weak variables go in
 370    coalesced sections.  Weak aliases (or any other kind of aliases) are
 371    not supported.  Weak symbols that aren't visible outside the .s file
 372    are not supported.  */
 373 #define ASM_WEAKEN_DECL(FILE, DECL, NAME, ALIAS)                        \
 374   do {                                                                  \
 375     if (ALIAS)                                                          \
 376       {                                                                 \
 377         warning ("alias definitions not supported in Mach-O; ignored"); \
 378         break;                                                          \
 379       }                                                                 \
 380                                                                         \
 381     if (! DECL_EXTERNAL (DECL) && TREE_PUBLIC (DECL))                   \
 382       targetm.asm_out.globalize_label (FILE, NAME);                     \
 383     if (DECL_EXTERNAL (DECL))                                           \
 384       fputs ("\t.weak_reference ", FILE);                               \
 385     else if (! lookup_attribute ("weak", DECL_ATTRIBUTES (DECL))        \
 386         && lookup_attribute ("weak_import", DECL_ATTRIBUTES (DECL)))    \
 387       break;                                                            \
 388     else if (TREE_PUBLIC (DECL))                                        \
 389       fputs ("\t.weak_definition ", FILE);                              \
 390     else                                                                \
 391       break;                                                            \
 392     assemble_name (FILE, NAME);                                         \
 393     fputc ('\n', FILE);                                                 \
 394   } while (0)
 395
 396 /* Darwin has the pthread routines in libSystem, which every program
 397    links to, so there's no need for weak-ness for that.  */
 398 #define GTHREAD_USE_WEAK 0
 399
 400 /* The Darwin linker imposes two limitations on common symbols: they
 401    can't have hidden visibility, and they can't appear in dylibs.  As
 402    a consequence, we should never use common symbols to represent
 403    vague linkage. */
 404 #undef USE_COMMON_FOR_ONE_ONLY
 405 #define USE_COMMON_FOR_ONE_ONLY 0
 406
 407 /* The Darwin linker doesn't want coalesced symbols to appear in
 408    a static archive's table of contents. */
 409 #undef TARGET_WEAK_NOT_IN_ARCHIVE_TOC
 410 #define TARGET_WEAK_NOT_IN_ARCHIVE_TOC 1
 411
 412 /* We make exception information linkonce. */
 413 #undef TARGET_USES_WEAK_UNWIND_INFO
 414 #define TARGET_USES_WEAK_UNWIND_INFO 1
 415
 416 /* We need to use a nonlocal label for the start of an EH frame: the
 417    Darwin linker requires that a coalesced section start with a label. */
 418 #undef FRAME_BEGIN_LABEL
 419 #define FRAME_BEGIN_LABEL "EH_frame"
 420
 421 /* Emit a label for the FDE corresponding to DECL.  EMPTY means
 422    emit a label for an empty FDE. */
 423 #define TARGET_ASM_EMIT_UNWIND_LABEL darwin_emit_unwind_label
 424
 425 /* Our profiling scheme doesn't LP labels and counter words.  */
 426
 427 #define NO_PROFILE_COUNTERS     1
 428
 429 #undef  INIT_SECTION_ASM_OP
 430 #define INIT_SECTION_ASM_OP
 431
 432 #undef  INVOKE__main
 433
 434 #define TARGET_ASM_CONSTRUCTOR  machopic_asm_out_constructor
 435 #define TARGET_ASM_DESTRUCTOR   machopic_asm_out_destructor
 436
 437 /* Always prefix with an underscore.  */
 438
 439 #define USER_LABEL_PREFIX "_"
 440
 441 /* Don't output a .file directive.  That is only used by the assembler for
 442    error reporting.  */
 443 #undef  TARGET_ASM_FILE_START_FILE_DIRECTIVE
 444 #define TARGET_ASM_FILE_START_FILE_DIRECTIVE false
 445
 446 #undef  TARGET_ASM_FILE_END
 447 #define TARGET_ASM_FILE_END darwin_file_end
 448
 449 #define ASM_OUTPUT_SKIP(FILE,SIZE)  \
 450   fprintf (FILE, "\t.space "HOST_WIDE_INT_PRINT_UNSIGNED"\n", SIZE)
 451
 452 /* Give ObjC methods pretty symbol names.  */
 453
 454 #undef  OBJC_GEN_METHOD_LABEL
 455 #define OBJC_GEN_METHOD_LABEL(BUF,IS_INST,CLASS_NAME,CAT_NAME,SEL_NAME,NUM) \
 456   do { if (CAT_NAME)                                                    \
 457          sprintf (BUF, "%c[%s(%s) %s]", (IS_INST) ? '-' : '+',          \
 458                   (CLASS_NAME), (CAT_NAME), (SEL_NAME));                \
 459        else                                                             \
 460          sprintf (BUF, "%c[%s %s]", (IS_INST) ? '-' : '+',              \
 461                   (CLASS_NAME), (SEL_NAME));                            \
 462      } while (0)
 463
 464 /* The RTTI data (e.g., __ti4name) is common and public (and static),
 465    but it does need to be referenced via indirect PIC data pointers.
 466    The machopic_define_symbol calls are telling the machopic subsystem
 467    that the name *is* defined in this module, so it doesn't need to
 468    make them indirect.  */
 469
 470 #undef ASM_DECLARE_OBJECT_NAME
 471 #define ASM_DECLARE_OBJECT_NAME(FILE, NAME, DECL)                       \
 472   do {                                                                  \
 473     const char *xname = NAME;                                           \
 474     if (GET_CODE (XEXP (DECL_RTL (DECL), 0)) != SYMBOL_REF)             \
 475       xname = IDENTIFIER_POINTER (DECL_NAME (DECL));                    \
 476     if (! DECL_WEAK (DECL)                                              \
 477         && ((TREE_STATIC (DECL)                                         \
 478              && (!DECL_COMMON (DECL) || !TREE_PUBLIC (DECL)))           \
 479             || DECL_INITIAL (DECL)))                                    \
 480         machopic_define_symbol (DECL_RTL (DECL));                       \
 481     if ((TREE_STATIC (DECL)                                             \
 482          && (!DECL_COMMON (DECL) || !TREE_PUBLIC (DECL)))               \
 483         || DECL_INITIAL (DECL))                                         \
 484       (* targetm.encode_section_info) (DECL, DECL_RTL (DECL), false);   \
 485     ASM_OUTPUT_LABEL (FILE, xname);                                     \
 486     /* Darwin doesn't support zero-size objects, so give them a         \
 487        byte.  */                                                        \
 488     if (tree_low_cst (DECL_SIZE_UNIT (DECL), 1) == 0)                   \
 489       assemble_zeros (1);                                               \
 490   } while (0)
 491
 492 #define ASM_DECLARE_FUNCTION_NAME(FILE, NAME, DECL)                     \
 493   do {                                                                  \
 494     const char *xname = NAME;                                           \
 495     if (GET_CODE (XEXP (DECL_RTL (DECL), 0)) != SYMBOL_REF)             \
 496       xname = IDENTIFIER_POINTER (DECL_NAME (DECL));                    \
 497     if (! DECL_WEAK (DECL)                                              \
 498         && ((TREE_STATIC (DECL)                                         \
 499              && (!DECL_COMMON (DECL) || !TREE_PUBLIC (DECL)))           \
 500             || DECL_INITIAL (DECL)))                                    \
 501         machopic_define_symbol (DECL_RTL (DECL));                       \
 502     if ((TREE_STATIC (DECL)                                             \
 503          && (!DECL_COMMON (DECL) || !TREE_PUBLIC (DECL)))               \
 504         || DECL_INITIAL (DECL))                                         \
 505       (* targetm.encode_section_info) (DECL, DECL_RTL (DECL), false);   \
 506     ASM_OUTPUT_LABEL (FILE, xname);                                     \
 507   } while (0)
 508
 509 #define ASM_DECLARE_CONSTANT_NAME(FILE, NAME, EXP, SIZE)        \
 510   do {                                                          \
 511     ASM_OUTPUT_LABEL (FILE, NAME);                              \
 512     /* Darwin doesn't support zero-size objects, so give them a \
 513        byte.  */                                                \
 514     if ((SIZE) == 0)                                            \
 515       assemble_zeros (1);                                       \
 516   } while (0)
 517
 518 /* Wrap new method names in quotes so the assembler doesn't gag.
 519    Make Objective-C internal symbols local.  */
 520
 521 #undef  ASM_OUTPUT_LABELREF
 522 #define ASM_OUTPUT_LABELREF(FILE,NAME)                                       \
 523   do {                                                                       \
 524        const char *xname = (NAME);                                           \
 525        if (! strcmp (xname, "<pic base>"))                                   \
 526          machopic_output_function_base_name(FILE);                           \
 527        else if (xname[0] == '&' || xname[0] == '*')                          \
 528          {                                                                   \
 529            int len = strlen (xname);                                         \
 530            if (len > 6 && !strcmp ("$stub", xname + len - 5))                \
 531              machopic_validate_stub_or_non_lazy_ptr (xname);                 \
 532            else if (len > 7 && !strcmp ("$stub\"", xname + len - 6))         \
 533              machopic_validate_stub_or_non_lazy_ptr (xname);                 \
 534            else if (len > 14 && !strcmp ("$non_lazy_ptr", xname + len - 13)) \
 535              machopic_validate_stub_or_non_lazy_ptr (xname);                 \
 536            fputs (&xname[1], FILE);                                          \
 537          }                                                                   \
 538        else if (xname[0] == '+' || xname[0] == '-')                          \
 539          fprintf (FILE, "\"%s\"", xname);                                    \
 540        else if (!strncmp (xname, "_OBJC_", 6))                               \
 541          fprintf (FILE, "L%s", xname);                                       \
 542        else if (!strncmp (xname, ".objc_class_name_", 17))                   \
 543          fprintf (FILE, "%s", xname);                                        \
 544        else                                                                  \
 545          asm_fprintf (FILE, "%U%s", xname);                                  \
 546   } while (0)
 547
 548 /* Output before executable code.  */
 549 #undef TEXT_SECTION_ASM_OP
 550 #define TEXT_SECTION_ASM_OP "\t.text"
 551
 552 /* Output before writable data.  */
 553
 554 #undef DATA_SECTION_ASM_OP
 555 #define DATA_SECTION_ASM_OP "\t.data"
 556
 557 #undef  ALIGN_ASM_OP
 558 #define ALIGN_ASM_OP            ".align"
 559
 560 #undef  ASM_OUTPUT_ALIGN
 561 #define ASM_OUTPUT_ALIGN(FILE,LOG)      \
 562   if ((LOG) != 0)                       \
 563     fprintf (FILE, "\t%s %d\n", ALIGN_ASM_OP, (LOG))
 564
 565 /* Ensure correct alignment of bss data.  */
 566
 567 #undef  ASM_OUTPUT_ALIGNED_DECL_LOCAL
 568 #define ASM_OUTPUT_ALIGNED_DECL_LOCAL(FILE, DECL, NAME, SIZE, ALIGN)    \
 569   do {                                                                  \
 570     unsigned HOST_WIDE_INT _new_size = SIZE;                            \
 571     fputs (".lcomm ", (FILE));                                          \
 572     assemble_name ((FILE), (NAME));                                     \
 573     if (_new_size == 0) _new_size = 1;                                  \
 574     fprintf ((FILE), ","HOST_WIDE_INT_PRINT_UNSIGNED",%u\n", _new_size, \
 575              floor_log2 ((ALIGN) / BITS_PER_UNIT));                     \
 576     if ((DECL) && ((TREE_STATIC (DECL)                                  \
 577          && (!DECL_COMMON (DECL) || !TREE_PUBLIC (DECL)))               \
 578         || DECL_INITIAL (DECL)))                                        \
 579       {                                                                 \
 580         (* targetm.encode_section_info) (DECL, DECL_RTL (DECL), false); \
 581         machopic_define_symbol (DECL_RTL (DECL));                       \
 582       }                                                                 \
 583   } while (0)
 584
 585 /* The maximum alignment which the object file format can support.
 586    For Mach-O, this is 2^15.  */
 587
 588 #undef  MAX_OFILE_ALIGNMENT
 589 #define MAX_OFILE_ALIGNMENT 0x8000
 590
 591 /* Create new Mach-O sections.  */
 592
 593 #undef  SECTION_FUNCTION
 594 #define SECTION_FUNCTION(FUNCTION, SECTION, DIRECTIVE, OBJC)            \
 595 extern void FUNCTION (void);                                            \
 596 void                                                                    \
 597 FUNCTION (void)                                                         \
 598 {                                                                       \
 599   if (in_section != SECTION)                                            \
 600     {                                                                   \
 601       if (OBJC)                                                         \
 602         objc_section_init ();                                           \
 603       if (asm_out_file)                                                 \
 604         fputs ("\t" DIRECTIVE "\n", asm_out_file);                      \
 605       in_section = SECTION;                                             \
 606       if ((SECTION == in_text_coal)                                     \
 607           || (SECTION == in_text_unlikely)                              \
 608           || (SECTION == in_text_unlikely_coal))                        \
 609         last_text_section = SECTION;                                    \
 610     }                                                                   \
 611 }                                                                       \
 612
 613 /* Darwin uses many types of special sections.  */
 614
 615 #undef  EXTRA_SECTIONS
 616 #define EXTRA_SECTIONS                                                  \
 617   in_text_coal, in_text_unlikely, in_text_unlikely_coal,                \
 618   in_const, in_const_data, in_cstring, in_literal4, in_literal8,        \
 619   in_const_coal, in_const_data_coal, in_data_coal,                      \
 620   in_constructor, in_destructor, in_mod_init, in_mod_term,              \
 621   in_objc_class, in_objc_meta_class, in_objc_category,                  \
 622   in_objc_class_vars, in_objc_instance_vars,                            \
 623   in_objc_cls_meth, in_objc_inst_meth,                                  \
 624   in_objc_cat_cls_meth, in_objc_cat_inst_meth,                          \
 625   in_objc_selector_refs,                                                \
 626   in_objc_selector_fixup,                                               \
 627   in_objc_symbols, in_objc_module_info,                                 \
 628   in_objc_protocol, in_objc_string_object,                              \
 629   in_objc_constant_string_object,                                       \
 630   in_objc_image_info,                                                   \
 631   in_objc_class_names, in_objc_meth_var_names,                          \
 632   in_objc_meth_var_types, in_objc_cls_refs,                             \
 633   in_machopic_nl_symbol_ptr,                                            \
 634   in_machopic_lazy_symbol_ptr,                                          \
 635   in_machopic_symbol_stub,                                              \
 636   in_machopic_symbol_stub1,                                             \
 637   in_machopic_picsymbol_stub,                                           \
 638   in_machopic_picsymbol_stub1,                                          \
 639   in_darwin_exception, in_darwin_eh_frame,                              \
 640   num_sections
 641
 642 #undef  EXTRA_SECTION_FUNCTIONS
 643 #define EXTRA_SECTION_FUNCTIONS                                 \
 644 static void objc_section_init (void);                           \
 645 SECTION_FUNCTION (text_coal_section,                            \
 646                   in_text_coal,                                 \
 647                   ".section __TEXT,__textcoal_nt,coalesced,"    \
 648                     "pure_instructions", 0)                     \
 649 /* APPLE LOCAL mainline 2005-04-15 <radar 4078608> */           \
 650 SECTION_FUNCTION (text_unlikely_coal_section,                   \
 651                   in_text_unlikely_coal,                        \
 652                   ".section __TEXT,__text_unlikely_coal,"       \
 653                     "coalesced,pure_instructions", 0)           \
 654 SECTION_FUNCTION (const_section,                                \
 655                   in_const,                                     \
 656                   ".const", 0)                                  \
 657 SECTION_FUNCTION (const_coal_section,                           \
 658                   in_const_coal,                                \
 659                   ".section __TEXT,__const_coal,coalesced", 0)  \
 660 SECTION_FUNCTION (const_data_section,                           \
 661                   in_const_data,                                \
 662                   ".const_data", 0)                             \
 663 SECTION_FUNCTION (const_data_coal_section,                      \
 664                   in_const_data_coal,                           \
 665                   ".section __DATA,__const_coal,coalesced", 0)  \
 666 SECTION_FUNCTION (data_coal_section,                            \
 667                   in_data_coal,                                 \
 668                   ".section __DATA,__datacoal_nt,coalesced", 0) \
 669 SECTION_FUNCTION (cstring_section,                              \
 670                   in_cstring,                                   \
 671                   ".cstring", 0)                                \
 672 SECTION_FUNCTION (literal4_section,                             \
 673                   in_literal4,                                  \
 674                   ".literal4", 0)                               \
 675 SECTION_FUNCTION (literal8_section,                             \
 676                   in_literal8,                                  \
 677                   ".literal8", 0)                               \
 678 SECTION_FUNCTION (constructor_section,                          \
 679                   in_constructor,                               \
 680                   ".constructor", 0)                            \
 681 SECTION_FUNCTION (mod_init_section,                             \
 682                   in_mod_init,                                  \
 683                   ".mod_init_func", 0)                          \
 684 SECTION_FUNCTION (mod_term_section,                             \
 685                   in_mod_term,                                  \
 686                   ".mod_term_func", 0)                          \
 687 SECTION_FUNCTION (destructor_section,                           \
 688                   in_destructor,                                \
 689                   ".destructor", 0)                             \
 690 SECTION_FUNCTION (objc_class_section,                           \
 691                   in_objc_class,                                \
 692                   ".objc_class", 1)                             \
 693 SECTION_FUNCTION (objc_meta_class_section,                      \
 694                   in_objc_meta_class,                           \
 695                   ".objc_meta_class", 1)                        \
 696 SECTION_FUNCTION (objc_category_section,                        \
 697                   in_objc_category,                             \
 698                 ".objc_category", 1)                            \
 699 SECTION_FUNCTION (objc_class_vars_section,                      \
 700                   in_objc_class_vars,                           \
 701                   ".objc_class_vars", 1)                        \
 702 SECTION_FUNCTION (objc_instance_vars_section,                   \
 703                   in_objc_instance_vars,                        \
 704                   ".objc_instance_vars", 1)                     \
 705 SECTION_FUNCTION (objc_cls_meth_section,                        \
 706                   in_objc_cls_meth,                             \
 707                   ".objc_cls_meth", 1)                          \
 708 SECTION_FUNCTION (objc_inst_meth_section,                       \
 709                   in_objc_inst_meth,                            \
 710                   ".objc_inst_meth", 1)                         \
 711 SECTION_FUNCTION (objc_cat_cls_meth_section,                    \
 712                   in_objc_cat_cls_meth,                         \
 713                   ".objc_cat_cls_meth", 1)                      \
 714 SECTION_FUNCTION (objc_cat_inst_meth_section,                   \
 715                   in_objc_cat_inst_meth,                        \
 716                   ".objc_cat_inst_meth", 1)                     \
 717 SECTION_FUNCTION (objc_selector_refs_section,                   \
 718                   in_objc_selector_refs,                        \
 719                   ".objc_message_refs", 1)                      \
 720 SECTION_FUNCTION (objc_selector_fixup_section,                               \
 721                   in_objc_selector_fixup,                                    \
 722                   ".section __OBJC, __sel_fixup, regular, no_dead_strip", 1) \
 723 SECTION_FUNCTION (objc_symbols_section,                                 \
 724                   in_objc_symbols,                                      \
 725                   ".objc_symbols", 1)                                   \
 726 SECTION_FUNCTION (objc_module_info_section,                             \
 727                   in_objc_module_info,                                  \
 728                   ".objc_module_info", 1)                               \
 729 SECTION_FUNCTION (objc_protocol_section,                                \
 730                   in_objc_protocol,                                     \
 731                   ".objc_protocol", 1)                                  \
 732 SECTION_FUNCTION (objc_string_object_section,                           \
 733                   in_objc_string_object,                                \
 734                   ".objc_string_object", 1)                             \
 735 SECTION_FUNCTION (objc_constant_string_object_section,                  \
 736                   in_objc_constant_string_object,                       \
 737                   ".section __OBJC, __cstring_object, regular, "        \
 738                     "no_dead_strip", 1)                                 \
 739 /* Fix-and-Continue image marker.  */                                   \
 740 SECTION_FUNCTION (objc_image_info_section,                              \
 741                   in_objc_image_info,                                   \
 742                   ".section __OBJC, __image_info, regular, "            \
 743                     "no_dead_strip", 1)                                 \
 744 SECTION_FUNCTION (objc_class_names_section,                             \
 745                 in_objc_class_names,                                    \
 746                 ".objc_class_names", 1)                                 \
 747 SECTION_FUNCTION (objc_meth_var_names_section,                          \
 748                 in_objc_meth_var_names,                                 \
 749                 ".objc_meth_var_names", 1)                              \
 750 SECTION_FUNCTION (objc_meth_var_types_section,                          \
 751                 in_objc_meth_var_types,                                 \
 752                 ".objc_meth_var_types", 1)                              \
 753 SECTION_FUNCTION (objc_cls_refs_section,                                \
 754                 in_objc_cls_refs,                                       \
 755                 ".objc_cls_refs", 1)                                    \
 756 \
 757 SECTION_FUNCTION (machopic_lazy_symbol_ptr_section,                     \
 758                 in_machopic_lazy_symbol_ptr,                            \
 759                 ".lazy_symbol_pointer", 0)                              \
 760 SECTION_FUNCTION (machopic_nl_symbol_ptr_section,                       \
 761                 in_machopic_nl_symbol_ptr,                              \
 762                 ".non_lazy_symbol_pointer", 0)                          \
 763 SECTION_FUNCTION (machopic_symbol_stub_section,                         \
 764                 in_machopic_symbol_stub,                                \
 765                 ".symbol_stub", 0)                                      \
 766 SECTION_FUNCTION (machopic_symbol_stub1_section,                        \
 767                 in_machopic_symbol_stub1,                               \
 768                 ".section __TEXT,__symbol_stub1,symbol_stubs,"          \
 769                   "pure_instructions,16", 0)                            \
 770 SECTION_FUNCTION (machopic_picsymbol_stub_section,                      \
 771                 in_machopic_picsymbol_stub,                             \
 772                 ".picsymbol_stub", 0)                                   \
 773 SECTION_FUNCTION (machopic_picsymbol_stub1_section,                     \
 774                 in_machopic_picsymbol_stub1,                            \
 775                 ".section __TEXT,__picsymbolstub1,symbol_stubs,"        \
 776                   "pure_instructions,32", 0)                            \
 777 SECTION_FUNCTION (darwin_exception_section,                             \
 778                 in_darwin_exception,                                    \
 779                 ".section __DATA,__gcc_except_tab", 0)                  \
 780 SECTION_FUNCTION (darwin_eh_frame_section,                              \
 781                 in_darwin_eh_frame,                                     \
 782                 ".section " EH_FRAME_SECTION_NAME ",__eh_frame"         \
 783                   EH_FRAME_SECTION_ATTR, 0)                             \
 784 \
 785 static void                                     \
 786 objc_section_init (void)                        \
 787 {                                               \
 788   static int been_here = 0;                     \
 789                                                 \
 790   if (been_here == 0)                           \
 791     {                                           \
 792       been_here = 1;                            \
 793           /* written, cold -> hot */            \
 794       objc_cat_cls_meth_section ();             \
 795       objc_cat_inst_meth_section ();            \
 796       objc_string_object_section ();            \
 797       objc_constant_string_object_section ();   \
 798       objc_selector_refs_section ();            \
 799       objc_selector_fixup_section ();           \
 800       objc_cls_refs_section ();                 \
 801       objc_class_section ();                    \
 802       objc_meta_class_section ();               \
 803           /* shared, hot -> cold */             \
 804       objc_cls_meth_section ();                 \
 805       objc_inst_meth_section ();                \
 806       objc_protocol_section ();                 \
 807       objc_class_names_section ();              \
 808       objc_meth_var_types_section ();           \
 809       objc_meth_var_names_section ();           \
 810       objc_category_section ();                 \
 811       objc_class_vars_section ();               \
 812       objc_instance_vars_section ();            \
 813       objc_module_info_section ();              \
 814       objc_symbols_section ();                  \
 815     }                                           \
 816 }
 817
 818 #define READONLY_DATA_SECTION const_section
 819
 820 #undef  TARGET_ASM_SELECT_SECTION
 821 #define TARGET_ASM_SELECT_SECTION machopic_select_section
 822 #define USE_SELECT_SECTION_FOR_FUNCTIONS
 823
 824 #undef  TARGET_ASM_SELECT_RTX_SECTION
 825 #define TARGET_ASM_SELECT_RTX_SECTION machopic_select_rtx_section
 826 #undef  TARGET_ASM_UNIQUE_SECTION
 827 #define TARGET_ASM_UNIQUE_SECTION darwin_unique_section
 828 #undef  TARGET_ASM_FUNCTION_RODATA_SECTION
 829 #define TARGET_ASM_FUNCTION_RODATA_SECTION default_no_function_rodata_section
 830
 831
 832 #define ASM_DECLARE_UNRESOLVED_REFERENCE(FILE,NAME)                     \
 833     do {                                                                \
 834          if (FILE) {                                                    \
 835            if (MACHOPIC_INDIRECT)                                       \
 836              fprintf (FILE, "\t.lazy_reference ");                      \
 837            else                                                         \
 838              fprintf (FILE, "\t.reference ");                           \
 839            assemble_name (FILE, NAME);                                  \
 840            fprintf (FILE, "\n");                                        \
 841          }                                                              \
 842        } while (0)
 843
 844 #define ASM_DECLARE_CLASS_REFERENCE(FILE,NAME)                          \
 845     do {                                                                \
 846          if (FILE) {                                                    \
 847            fprintf (FILE, "\t");                                        \
 848            assemble_name (FILE, NAME);                                  \
 849            fprintf (FILE, "=0\n");                                      \
 850            (*targetm.asm_out.globalize_label) (FILE, NAME);             \
 851          }                                                              \
 852        } while (0)
 853
 854 /* Globalizing directive for a label.  */
 855 #define GLOBAL_ASM_OP ".globl "
 856 #define TARGET_ASM_GLOBALIZE_LABEL darwin_globalize_label
 857
 858 /* Emit an assembler directive to set visibility for a symbol.  Used
 859    to support visibility attribute and Darwin's private extern
 860    feature.  */
 861 #undef TARGET_ASM_ASSEMBLE_VISIBILITY
 862 #define TARGET_ASM_ASSEMBLE_VISIBILITY darwin_assemble_visibility
 863
 864 /* Extra attributes for Darwin.  */
 865 #define SUBTARGET_ATTRIBUTE_TABLE                                            \
 866   /* { name, min_len, max_len, decl_req, type_req, fn_type_req, handler } */ \
 867   { "weak_import", 0, 0, true, false, false,                                 \
 868     darwin_handle_weak_import_attribute }
 869
 870 #undef ASM_GENERATE_INTERNAL_LABEL
 871 #define ASM_GENERATE_INTERNAL_LABEL(LABEL,PREFIX,NUM)   \
 872   sprintf (LABEL, "*%s%ld", PREFIX, (long)(NUM))
 873
 874 #undef TARGET_ASM_MARK_DECL_PRESERVED
 875 #define TARGET_ASM_MARK_DECL_PRESERVED darwin_mark_decl_preserved
 876
 877 /* Set on a symbol with SYMBOL_FLAG_FUNCTION or
 878    MACHO_SYMBOL_FLAG_VARIABLE to indicate that the function or
 879    variable has been defined in this translation unit.  */
 880
 881 #define MACHO_SYMBOL_FLAG_VARIABLE (SYMBOL_FLAG_MACH_DEP)
 882 #define MACHO_SYMBOL_FLAG_DEFINED ((SYMBOL_FLAG_MACH_DEP) << 1)
 883
 884 /* Set on a symbol to indicate when fix-and-continue style code
 885    generation is being used and the symbol refers to a static symbol
 886    that should be rebound from new instances of a translation unit to
 887    the original instance of the data.  */
 888
 889 #define MACHO_SYMBOL_STATIC ((SYMBOL_FLAG_MACH_DEP) << 2)
 890
 891 /* Symbolic names for various things we might know about a symbol.  */
 892
 893 enum machopic_addr_class {
 894   MACHOPIC_UNDEFINED,
 895   MACHOPIC_DEFINED_DATA,
 896   MACHOPIC_UNDEFINED_DATA,
 897   MACHOPIC_DEFINED_FUNCTION,
 898   MACHOPIC_UNDEFINED_FUNCTION
 899 };
 900
 901 /* Macros defining the various PIC cases.  */
 902
 903 #define MACHO_DYNAMIC_NO_PIC_P  (TARGET_DYNAMIC_NO_PIC)
 904 #define MACHOPIC_INDIRECT       (flag_pic || MACHO_DYNAMIC_NO_PIC_P)
 905 #define MACHOPIC_JUST_INDIRECT  (flag_pic == 1 || MACHO_DYNAMIC_NO_PIC_P)
 906 #define MACHOPIC_PURE           (flag_pic == 2 && ! MACHO_DYNAMIC_NO_PIC_P)
 907
 908 #undef TARGET_ENCODE_SECTION_INFO
 909 #define TARGET_ENCODE_SECTION_INFO  darwin_encode_section_info
 910 #undef TARGET_STRIP_NAME_ENCODING
 911 #define TARGET_STRIP_NAME_ENCODING  default_strip_name_encoding
 912
 913 #define GEN_BINDER_NAME_FOR_STUB(BUF,STUB,STUB_LENGTH)          \
 914   do {                                                          \
 915     const char *const stub_ = (STUB);                           \
 916     char *buffer_ = (BUF);                                      \
 917     strcpy (buffer_, stub_);                                    \
 918     if (stub_[0] == '"')                                        \
 919       {                                                         \
 920         strcpy (buffer_ + (STUB_LENGTH) - 1, "_binder\"");      \
 921       }                                                         \
 922     else                                                        \
 923       {                                                         \
 924         strcpy (buffer_ + (STUB_LENGTH), "_binder");            \
 925       }                                                         \
 926   } while (0)
 927
 928 #define GEN_SYMBOL_NAME_FOR_SYMBOL(BUF,SYMBOL,SYMBOL_LENGTH)    \
 929   do {                                                          \
 930     const char *const symbol_ = (SYMBOL);                       \
 931     char *buffer_ = (BUF);                                      \
 932     if (name_needs_quotes (symbol_) && symbol_[0] != '"')       \
 933       {                                                         \
 934           sprintf (buffer_, "\"%s\"", symbol_);                 \
 935       }                                                         \
 936     else                                                        \
 937       {                                                         \
 938         strcpy (buffer_, symbol_);                              \
 939       }                                                         \
 940   } while (0)
 941
 942 /* Given a symbol name string, create the lazy pointer version
 943    of the symbol name.  */
 944
 945 #define GEN_LAZY_PTR_NAME_FOR_SYMBOL(BUF,SYMBOL,SYMBOL_LENGTH)  \
 946   do {                                                          \
 947     const char *symbol_ = (SYMBOL);                             \
 948     char *buffer_ = (BUF);                                      \
 949     if (symbol_[0] == '"')                                      \
 950       {                                                         \
 951         strcpy (buffer_, "\"L");                                \
 952         strcpy (buffer_ + 2, symbol_ + 1);                      \
 953         strcpy (buffer_ + (SYMBOL_LENGTH), "$lazy_ptr\"");      \
 954       }                                                         \
 955     else if (name_needs_quotes (symbol_))                       \
 956       {                                                         \
 957         strcpy (buffer_, "\"L");                                \
 958         strcpy (buffer_ + 2, symbol_);                          \
 959         strcpy (buffer_ + (SYMBOL_LENGTH) + 2, "$lazy_ptr\"");  \
 960       }                                                         \
 961     else                                                        \
 962       {                                                         \
 963         strcpy (buffer_, "L");                                  \
 964         strcpy (buffer_ + 1, symbol_);                          \
 965         strcpy (buffer_ + (SYMBOL_LENGTH) + 1, "$lazy_ptr");    \
 966       }                                                         \
 967   } while (0)
 968
 969 #define TARGET_ASM_EXCEPTION_SECTION darwin_exception_section
 970
 971 #define TARGET_ASM_EH_FRAME_SECTION darwin_eh_frame_section
 972
 973 #define EH_FRAME_SECTION_NAME   "__TEXT"
 974 #define EH_FRAME_SECTION_ATTR ",coalesced,no_toc+strip_static_syms+live_support"
 975
 976 /* Java runtime class list.  */
 977 #define JCR_SECTION_NAME "__DATA,jcr,regular,no_dead_strip"
 978
 979 #undef ASM_PREFERRED_EH_DATA_FORMAT
 980 #define ASM_PREFERRED_EH_DATA_FORMAT(CODE,GLOBAL)  \
 981   (((CODE) == 2 && (GLOBAL) == 1) \
 982    ? (DW_EH_PE_pcrel | DW_EH_PE_indirect | DW_EH_PE_sdata4) : \
 983      ((CODE) == 1 || (GLOBAL) == 0) ? DW_EH_PE_pcrel : DW_EH_PE_absptr)
 984
 985 #define ASM_OUTPUT_DWARF_DELTA(FILE,SIZE,LABEL1,LABEL2)  \
 986   darwin_asm_output_dwarf_delta (FILE, SIZE, LABEL1, LABEL2)
 987
 988 #define ASM_MAYBE_OUTPUT_ENCODED_ADDR_RTX(ASM_OUT_FILE, ENCODING, SIZE, ADDR, DONE)     \
 989       if (ENCODING == ASM_PREFERRED_EH_DATA_FORMAT (2, 1)) {                            \
 990         darwin_non_lazy_pcrel (ASM_OUT_FILE, ADDR);                                     \
 991         goto DONE;                                                                      \
 992       }
 993
 994 /* Experimentally, putting jump tables in text is faster on SPEC.
 995    Also this is needed for correctness for coalesced functions.  */
 996
 997 #ifndef JUMP_TABLES_IN_TEXT_SECTION
 998 #define JUMP_TABLES_IN_TEXT_SECTION 1
 999 #endif
1000
1001 #define TARGET_TERMINATE_DW2_EH_FRAME_INFO false
1002
1003 #undef TARGET_ASM_NAMED_SECTION
1004 #define TARGET_ASM_NAMED_SECTION darwin_asm_named_section
1005
1006 #define DARWIN_REGISTER_TARGET_PRAGMAS()                        \
1007   do {                                                          \
1008     c_register_pragma (0, "mark", darwin_pragma_ignore);        \
1009     c_register_pragma (0, "options", darwin_pragma_options);    \
1010     c_register_pragma (0, "segment", darwin_pragma_ignore);     \
1011     c_register_pragma (0, "unused", darwin_pragma_unused);      \
1012   } while (0)
1013
1014 #undef ASM_APP_ON
1015 #define ASM_APP_ON ""
1016 #undef ASM_APP_OFF
1017 #define ASM_APP_OFF ""
1018
1019 void darwin_register_frameworks (const char *, const char *, int);
1020 void darwin_register_objc_includes (const char *, const char *, int);
1021 #define TARGET_EXTRA_PRE_INCLUDES darwin_register_objc_includes
1022 #define TARGET_EXTRA_INCLUDES darwin_register_frameworks
1023
1024 void add_framework_path (char *);
1025 #define TARGET_OPTF add_framework_path
1026
1027 #define TARGET_HAS_F_SETLKW
1028
1029 /* Darwin before 7.0 does not have C99 functions.   */
1030 #ifndef TARGET_C99_FUNCTIONS
1031 #define TARGET_C99_FUNCTIONS 0
1032 #endif
1033
1034 #define WINT_TYPE "int"
1035
1036 #endif /* CONFIG_DARWIN_H */