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 (0, "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 ("$non_lazy_ptr", xname + len - 13)) \
 535              machopic_validate_stub_or_non_lazy_ptr (xname);                 \
 536            else if (len > 15 && !strcmp ("$non_lazy_ptr\"", xname + len - 14)) \
 537              machopic_validate_stub_or_non_lazy_ptr (xname);                 \
 538            if (xname[1] != '"' && name_needs_quotes (&xname[1]))             \
 539              fprintf (FILE, "\"%s\"", &xname[1]);                            \
 540            else                                                              \
 541              fputs (&xname[1], FILE);                                        \
 542          }                                                                   \
 543        else if (xname[0] == '+' || xname[0] == '-')                          \
 544          fprintf (FILE, "\"%s\"", xname);                                    \
 545        else if (!strncmp (xname, "_OBJC_", 6))                               \
 546          fprintf (FILE, "L%s", xname);                                       \
 547        else if (!strncmp (xname, ".objc_class_name_", 17))                   \
 548          fprintf (FILE, "%s", xname);                                        \
 549        else if (xname[0] != '"' && name_needs_quotes (xname))                \
 550          fprintf (FILE, "\"%s\"", xname);                                    \
 551        else                                                                  \
 552          asm_fprintf (FILE, "%U%s", xname);                                  \
 553   } while (0)
 554
 555 /* Output before executable code.  */
 556 #undef TEXT_SECTION_ASM_OP
 557 #define TEXT_SECTION_ASM_OP "\t.text"
 558
 559 /* Output before writable data.  */
 560
 561 #undef DATA_SECTION_ASM_OP
 562 #define DATA_SECTION_ASM_OP "\t.data"
 563
 564 #undef  ALIGN_ASM_OP
 565 #define ALIGN_ASM_OP            ".align"
 566
 567 #undef  ASM_OUTPUT_ALIGN
 568 #define ASM_OUTPUT_ALIGN(FILE,LOG)      \
 569   if ((LOG) != 0)                       \
 570     fprintf (FILE, "\t%s %d\n", ALIGN_ASM_OP, (LOG))
 571
 572 /* Ensure correct alignment of bss data.  */
 573
 574 #undef  ASM_OUTPUT_ALIGNED_DECL_LOCAL
 575 #define ASM_OUTPUT_ALIGNED_DECL_LOCAL(FILE, DECL, NAME, SIZE, ALIGN)    \
 576   do {                                                                  \
 577     unsigned HOST_WIDE_INT _new_size = SIZE;                            \
 578     fputs (".lcomm ", (FILE));                                          \
 579     assemble_name ((FILE), (NAME));                                     \
 580     if (_new_size == 0) _new_size = 1;                                  \
 581     fprintf ((FILE), ","HOST_WIDE_INT_PRINT_UNSIGNED",%u\n", _new_size, \
 582              floor_log2 ((ALIGN) / BITS_PER_UNIT));                     \
 583     if ((DECL) && ((TREE_STATIC (DECL)                                  \
 584          && (!DECL_COMMON (DECL) || !TREE_PUBLIC (DECL)))               \
 585         || DECL_INITIAL (DECL)))                                        \
 586       {                                                                 \
 587         (* targetm.encode_section_info) (DECL, DECL_RTL (DECL), false); \
 588         machopic_define_symbol (DECL_RTL (DECL));                       \
 589       }                                                                 \
 590   } while (0)
 591
 592 /* The maximum alignment which the object file format can support.
 593    For Mach-O, this is 2^15.  */
 594
 595 #undef  MAX_OFILE_ALIGNMENT
 596 #define MAX_OFILE_ALIGNMENT 0x8000
 597
 598 /* Create new Mach-O sections.  */
 599
 600 #undef  SECTION_FUNCTION
 601 #define SECTION_FUNCTION(FUNCTION, SECTION, DIRECTIVE, OBJC)            \
 602 extern void FUNCTION (void);                                            \
 603 void                                                                    \
 604 FUNCTION (void)                                                         \
 605 {                                                                       \
 606   if (in_section != SECTION)                                            \
 607     {                                                                   \
 608       if (OBJC)                                                         \
 609         objc_section_init ();                                           \
 610       if (asm_out_file)                                                 \
 611         fputs ("\t" DIRECTIVE "\n", asm_out_file);                      \
 612       in_section = SECTION;                                             \
 613       if ((SECTION == in_text_coal)                                     \
 614           || (SECTION == in_text_unlikely)                              \
 615           || (SECTION == in_text_unlikely_coal))                        \
 616         last_text_section = SECTION;                                    \
 617     }                                                                   \
 618 }                                                                       \
 619
 620 /* Darwin uses many types of special sections.  */
 621
 622 #undef  EXTRA_SECTIONS
 623 #define EXTRA_SECTIONS                                                  \
 624   in_text_coal, in_text_unlikely, in_text_unlikely_coal,                \
 625   in_const, in_const_data, in_cstring, in_literal4, in_literal8,        \
 626   in_const_coal, in_const_data_coal, in_data_coal,                      \
 627   in_constructor, in_destructor, in_mod_init, in_mod_term,              \
 628   in_objc_class, in_objc_meta_class, in_objc_category,                  \
 629   in_objc_class_vars, in_objc_instance_vars,                            \
 630   in_objc_cls_meth, in_objc_inst_meth,                                  \
 631   in_objc_cat_cls_meth, in_objc_cat_inst_meth,                          \
 632   in_objc_selector_refs,                                                \
 633   in_objc_selector_fixup,                                               \
 634   in_objc_symbols, in_objc_module_info,                                 \
 635   in_objc_protocol, in_objc_string_object,                              \
 636   in_objc_constant_string_object,                                       \
 637   in_objc_image_info,                                                   \
 638   in_objc_class_names, in_objc_meth_var_names,                          \
 639   in_objc_meth_var_types, in_objc_cls_refs,                             \
 640   in_machopic_nl_symbol_ptr,                                            \
 641   in_machopic_lazy_symbol_ptr,                                          \
 642   in_machopic_symbol_stub,                                              \
 643   in_machopic_symbol_stub1,                                             \
 644   in_machopic_picsymbol_stub,                                           \
 645   in_machopic_picsymbol_stub1,                                          \
 646   in_darwin_exception, in_darwin_eh_frame,                              \
 647   num_sections
 648
 649 #undef  EXTRA_SECTION_FUNCTIONS
 650 #define EXTRA_SECTION_FUNCTIONS                                 \
 651 static void objc_section_init (void);                           \
 652 SECTION_FUNCTION (text_coal_section,                            \
 653                   in_text_coal,                                 \
 654                   ".section __TEXT,__textcoal_nt,coalesced,"    \
 655                     "pure_instructions", 0)                     \
 656 SECTION_FUNCTION (text_unlikely_coal_section,                   \
 657                   in_text_unlikely_coal,                        \
 658                   ".section __TEXT,__text_unlikely_coal,"       \
 659                     "coalesced,pure_instructions", 0)           \
 660 SECTION_FUNCTION (const_section,                                \
 661                   in_const,                                     \
 662                   ".const", 0)                                  \
 663 SECTION_FUNCTION (const_coal_section,                           \
 664                   in_const_coal,                                \
 665                   ".section __TEXT,__const_coal,coalesced", 0)  \
 666 SECTION_FUNCTION (const_data_section,                           \
 667                   in_const_data,                                \
 668                   ".const_data", 0)                             \
 669 SECTION_FUNCTION (const_data_coal_section,                      \
 670                   in_const_data_coal,                           \
 671                   ".section __DATA,__const_coal,coalesced", 0)  \
 672 SECTION_FUNCTION (data_coal_section,                            \
 673                   in_data_coal,                                 \
 674                   ".section __DATA,__datacoal_nt,coalesced", 0) \
 675 SECTION_FUNCTION (cstring_section,                              \
 676                   in_cstring,                                   \
 677                   ".cstring", 0)                                \
 678 SECTION_FUNCTION (literal4_section,                             \
 679                   in_literal4,                                  \
 680                   ".literal4", 0)                               \
 681 SECTION_FUNCTION (literal8_section,                             \
 682                   in_literal8,                                  \
 683                   ".literal8", 0)                               \
 684 SECTION_FUNCTION (constructor_section,                          \
 685                   in_constructor,                               \
 686                   ".constructor", 0)                            \
 687 SECTION_FUNCTION (mod_init_section,                             \
 688                   in_mod_init,                                  \
 689                   ".mod_init_func", 0)                          \
 690 SECTION_FUNCTION (mod_term_section,                             \
 691                   in_mod_term,                                  \
 692                   ".mod_term_func", 0)                          \
 693 SECTION_FUNCTION (destructor_section,                           \
 694                   in_destructor,                                \
 695                   ".destructor", 0)                             \
 696 SECTION_FUNCTION (objc_class_section,                           \
 697                   in_objc_class,                                \
 698                   ".objc_class", 1)                             \
 699 SECTION_FUNCTION (objc_meta_class_section,                      \
 700                   in_objc_meta_class,                           \
 701                   ".objc_meta_class", 1)                        \
 702 SECTION_FUNCTION (objc_category_section,                        \
 703                   in_objc_category,                             \
 704                 ".objc_category", 1)                            \
 705 SECTION_FUNCTION (objc_class_vars_section,                      \
 706                   in_objc_class_vars,                           \
 707                   ".objc_class_vars", 1)                        \
 708 SECTION_FUNCTION (objc_instance_vars_section,                   \
 709                   in_objc_instance_vars,                        \
 710                   ".objc_instance_vars", 1)                     \
 711 SECTION_FUNCTION (objc_cls_meth_section,                        \
 712                   in_objc_cls_meth,                             \
 713                   ".objc_cls_meth", 1)                          \
 714 SECTION_FUNCTION (objc_inst_meth_section,                       \
 715                   in_objc_inst_meth,                            \
 716                   ".objc_inst_meth", 1)                         \
 717 SECTION_FUNCTION (objc_cat_cls_meth_section,                    \
 718                   in_objc_cat_cls_meth,                         \
 719                   ".objc_cat_cls_meth", 1)                      \
 720 SECTION_FUNCTION (objc_cat_inst_meth_section,                   \
 721                   in_objc_cat_inst_meth,                        \
 722                   ".objc_cat_inst_meth", 1)                     \
 723 SECTION_FUNCTION (objc_selector_refs_section,                   \
 724                   in_objc_selector_refs,                        \
 725                   ".objc_message_refs", 1)                      \
 726 SECTION_FUNCTION (objc_selector_fixup_section,                               \
 727                   in_objc_selector_fixup,                                    \
 728                   ".section __OBJC, __sel_fixup, regular, no_dead_strip", 1) \
 729 SECTION_FUNCTION (objc_symbols_section,                                 \
 730                   in_objc_symbols,                                      \
 731                   ".objc_symbols", 1)                                   \
 732 SECTION_FUNCTION (objc_module_info_section,                             \
 733                   in_objc_module_info,                                  \
 734                   ".objc_module_info", 1)                               \
 735 SECTION_FUNCTION (objc_protocol_section,                                \
 736                   in_objc_protocol,                                     \
 737                   ".objc_protocol", 1)                                  \
 738 SECTION_FUNCTION (objc_string_object_section,                           \
 739                   in_objc_string_object,                                \
 740                   ".objc_string_object", 1)                             \
 741 SECTION_FUNCTION (objc_constant_string_object_section,                  \
 742                   in_objc_constant_string_object,                       \
 743                   ".section __OBJC, __cstring_object, regular, "        \
 744                     "no_dead_strip", 1)                                 \
 745 /* Fix-and-Continue image marker.  */                                   \
 746 SECTION_FUNCTION (objc_image_info_section,                              \
 747                   in_objc_image_info,                                   \
 748                   ".section __OBJC, __image_info, regular, "            \
 749                     "no_dead_strip", 1)                                 \
 750 SECTION_FUNCTION (objc_class_names_section,                             \
 751                 in_objc_class_names,                                    \
 752                 ".objc_class_names", 1)                                 \
 753 SECTION_FUNCTION (objc_meth_var_names_section,                          \
 754                 in_objc_meth_var_names,                                 \
 755                 ".objc_meth_var_names", 1)                              \
 756 SECTION_FUNCTION (objc_meth_var_types_section,                          \
 757                 in_objc_meth_var_types,                                 \
 758                 ".objc_meth_var_types", 1)                              \
 759 SECTION_FUNCTION (objc_cls_refs_section,                                \
 760                 in_objc_cls_refs,                                       \
 761                 ".objc_cls_refs", 1)                                    \
 762 \
 763 SECTION_FUNCTION (machopic_lazy_symbol_ptr_section,                     \
 764                 in_machopic_lazy_symbol_ptr,                            \
 765                 ".lazy_symbol_pointer", 0)                              \
 766 SECTION_FUNCTION (machopic_nl_symbol_ptr_section,                       \
 767                 in_machopic_nl_symbol_ptr,                              \
 768                 ".non_lazy_symbol_pointer", 0)                          \
 769 SECTION_FUNCTION (machopic_symbol_stub_section,                         \
 770                 in_machopic_symbol_stub,                                \
 771                 ".symbol_stub", 0)                                      \
 772 SECTION_FUNCTION (machopic_symbol_stub1_section,                        \
 773                 in_machopic_symbol_stub1,                               \
 774                 ".section __TEXT,__symbol_stub1,symbol_stubs,"          \
 775                   "pure_instructions,16", 0)                            \
 776 SECTION_FUNCTION (machopic_picsymbol_stub_section,                      \
 777                 in_machopic_picsymbol_stub,                             \
 778                 ".picsymbol_stub", 0)                                   \
 779 SECTION_FUNCTION (machopic_picsymbol_stub1_section,                     \
 780                 in_machopic_picsymbol_stub1,                            \
 781                 ".section __TEXT,__picsymbolstub1,symbol_stubs,"        \
 782                   "pure_instructions,32", 0)                            \
 783 SECTION_FUNCTION (darwin_exception_section,                             \
 784                 in_darwin_exception,                                    \
 785                 ".section __DATA,__gcc_except_tab", 0)                  \
 786 SECTION_FUNCTION (darwin_eh_frame_section,                              \
 787                 in_darwin_eh_frame,                                     \
 788                 ".section " EH_FRAME_SECTION_NAME ",__eh_frame"         \
 789                   EH_FRAME_SECTION_ATTR, 0)                             \
 790 \
 791 static void                                     \
 792 objc_section_init (void)                        \
 793 {                                               \
 794   static int been_here = 0;                     \
 795                                                 \
 796   if (been_here == 0)                           \
 797     {                                           \
 798       been_here = 1;                            \
 799           /* written, cold -> hot */            \
 800       objc_cat_cls_meth_section ();             \
 801       objc_cat_inst_meth_section ();            \
 802       objc_string_object_section ();            \
 803       objc_constant_string_object_section ();   \
 804       objc_selector_refs_section ();            \
 805       objc_selector_fixup_section ();           \
 806       objc_cls_refs_section ();                 \
 807       objc_class_section ();                    \
 808       objc_meta_class_section ();               \
 809           /* shared, hot -> cold */             \
 810       objc_cls_meth_section ();                 \
 811       objc_inst_meth_section ();                \
 812       objc_protocol_section ();                 \
 813       objc_class_names_section ();              \
 814       objc_meth_var_types_section ();           \
 815       objc_meth_var_names_section ();           \
 816       objc_category_section ();                 \
 817       objc_class_vars_section ();               \
 818       objc_instance_vars_section ();            \
 819       objc_module_info_section ();              \
 820       objc_symbols_section ();                  \
 821     }                                           \
 822 }
 823
 824 #define READONLY_DATA_SECTION const_section
 825
 826 #undef  TARGET_ASM_SELECT_SECTION
 827 #define TARGET_ASM_SELECT_SECTION machopic_select_section
 828 #define USE_SELECT_SECTION_FOR_FUNCTIONS
 829
 830 #undef  TARGET_ASM_SELECT_RTX_SECTION
 831 #define TARGET_ASM_SELECT_RTX_SECTION machopic_select_rtx_section
 832 #undef  TARGET_ASM_UNIQUE_SECTION
 833 #define TARGET_ASM_UNIQUE_SECTION darwin_unique_section
 834 #undef  TARGET_ASM_FUNCTION_RODATA_SECTION
 835 #define TARGET_ASM_FUNCTION_RODATA_SECTION default_no_function_rodata_section
 836
 837
 838 #define ASM_DECLARE_UNRESOLVED_REFERENCE(FILE,NAME)                     \
 839     do {                                                                \
 840          if (FILE) {                                                    \
 841            if (MACHOPIC_INDIRECT)                                       \
 842              fprintf (FILE, "\t.lazy_reference ");                      \
 843            else                                                         \
 844              fprintf (FILE, "\t.reference ");                           \
 845            assemble_name (FILE, NAME);                                  \
 846            fprintf (FILE, "\n");                                        \
 847          }                                                              \
 848        } while (0)
 849
 850 #define ASM_DECLARE_CLASS_REFERENCE(FILE,NAME)                          \
 851     do {                                                                \
 852          if (FILE) {                                                    \
 853            fprintf (FILE, "\t");                                        \
 854            assemble_name (FILE, NAME);                                  \
 855            fprintf (FILE, "=0\n");                                      \
 856            (*targetm.asm_out.globalize_label) (FILE, NAME);             \
 857          }                                                              \
 858        } while (0)
 859
 860 /* Globalizing directive for a label.  */
 861 #define GLOBAL_ASM_OP ".globl "
 862 #define TARGET_ASM_GLOBALIZE_LABEL darwin_globalize_label
 863
 864 /* Emit an assembler directive to set visibility for a symbol.  Used
 865    to support visibility attribute and Darwin's private extern
 866    feature.  */
 867 #undef TARGET_ASM_ASSEMBLE_VISIBILITY
 868 #define TARGET_ASM_ASSEMBLE_VISIBILITY darwin_assemble_visibility
 869
 870 /* Extra attributes for Darwin.  */
 871 #define SUBTARGET_ATTRIBUTE_TABLE                                            \
 872   /* { name, min_len, max_len, decl_req, type_req, fn_type_req, handler } */ \
 873   { "weak_import", 0, 0, true, false, false,                                 \
 874     darwin_handle_weak_import_attribute }
 875
 876 #undef ASM_GENERATE_INTERNAL_LABEL
 877 #define ASM_GENERATE_INTERNAL_LABEL(LABEL,PREFIX,NUM)   \
 878   sprintf (LABEL, "*%s%ld", PREFIX, (long)(NUM))
 879
 880 #undef TARGET_ASM_MARK_DECL_PRESERVED
 881 #define TARGET_ASM_MARK_DECL_PRESERVED darwin_mark_decl_preserved
 882
 883 /* Set on a symbol with SYMBOL_FLAG_FUNCTION or
 884    MACHO_SYMBOL_FLAG_VARIABLE to indicate that the function or
 885    variable has been defined in this translation unit.  */
 886
 887 #define MACHO_SYMBOL_FLAG_VARIABLE (SYMBOL_FLAG_MACH_DEP)
 888 #define MACHO_SYMBOL_FLAG_DEFINED ((SYMBOL_FLAG_MACH_DEP) << 1)
 889
 890 /* Set on a symbol to indicate when fix-and-continue style code
 891    generation is being used and the symbol refers to a static symbol
 892    that should be rebound from new instances of a translation unit to
 893    the original instance of the data.  */
 894
 895 #define MACHO_SYMBOL_STATIC ((SYMBOL_FLAG_MACH_DEP) << 2)
 896
 897 /* Symbolic names for various things we might know about a symbol.  */
 898
 899 enum machopic_addr_class {
 900   MACHOPIC_UNDEFINED,
 901   MACHOPIC_DEFINED_DATA,
 902   MACHOPIC_UNDEFINED_DATA,
 903   MACHOPIC_DEFINED_FUNCTION,
 904   MACHOPIC_UNDEFINED_FUNCTION
 905 };
 906
 907 /* Macros defining the various PIC cases.  */
 908
 909 #define MACHO_DYNAMIC_NO_PIC_P  (TARGET_DYNAMIC_NO_PIC)
 910 #define MACHOPIC_INDIRECT       (flag_pic || MACHO_DYNAMIC_NO_PIC_P)
 911 #define MACHOPIC_JUST_INDIRECT  (flag_pic == 1 || MACHO_DYNAMIC_NO_PIC_P)
 912 #define MACHOPIC_PURE           (flag_pic == 2 && ! MACHO_DYNAMIC_NO_PIC_P)
 913
 914 #undef TARGET_ENCODE_SECTION_INFO
 915 #define TARGET_ENCODE_SECTION_INFO  darwin_encode_section_info
 916 #undef TARGET_STRIP_NAME_ENCODING
 917 #define TARGET_STRIP_NAME_ENCODING  default_strip_name_encoding
 918
 919 #define GEN_BINDER_NAME_FOR_STUB(BUF,STUB,STUB_LENGTH)          \
 920   do {                                                          \
 921     const char *const stub_ = (STUB);                           \
 922     char *buffer_ = (BUF);                                      \
 923     strcpy (buffer_, stub_);                                    \
 924     if (stub_[0] == '"')                                        \
 925       {                                                         \
 926         strcpy (buffer_ + (STUB_LENGTH) - 1, "_binder\"");      \
 927       }                                                         \
 928     else                                                        \
 929       {                                                         \
 930         strcpy (buffer_ + (STUB_LENGTH), "_binder");            \
 931       }                                                         \
 932   } while (0)
 933
 934 #define GEN_SYMBOL_NAME_FOR_SYMBOL(BUF,SYMBOL,SYMBOL_LENGTH)    \
 935   do {                                                          \
 936     const char *const symbol_ = (SYMBOL);                       \
 937     char *buffer_ = (BUF);                                      \
 938     if (name_needs_quotes (symbol_) && symbol_[0] != '"')       \
 939       {                                                         \
 940           sprintf (buffer_, "\"%s\"", symbol_);                 \
 941       }                                                         \
 942     else                                                        \
 943       {                                                         \
 944         strcpy (buffer_, symbol_);                              \
 945       }                                                         \
 946   } while (0)
 947
 948 /* Given a symbol name string, create the lazy pointer version
 949    of the symbol name.  */
 950
 951 #define GEN_LAZY_PTR_NAME_FOR_SYMBOL(BUF,SYMBOL,SYMBOL_LENGTH)  \
 952   do {                                                          \
 953     const char *symbol_ = (SYMBOL);                             \
 954     char *buffer_ = (BUF);                                      \
 955     if (symbol_[0] == '"')                                      \
 956       {                                                         \
 957         strcpy (buffer_, "\"L");                                \
 958         strcpy (buffer_ + 2, symbol_ + 1);                      \
 959         strcpy (buffer_ + (SYMBOL_LENGTH), "$lazy_ptr\"");      \
 960       }                                                         \
 961     else if (name_needs_quotes (symbol_))                       \
 962       {                                                         \
 963         strcpy (buffer_, "\"L");                                \
 964         strcpy (buffer_ + 2, symbol_);                          \
 965         strcpy (buffer_ + (SYMBOL_LENGTH) + 2, "$lazy_ptr\"");  \
 966       }                                                         \
 967     else                                                        \
 968       {                                                         \
 969         strcpy (buffer_, "L");                                  \
 970         strcpy (buffer_ + 1, symbol_);                          \
 971         strcpy (buffer_ + (SYMBOL_LENGTH) + 1, "$lazy_ptr");    \
 972       }                                                         \
 973   } while (0)
 974
 975 #define TARGET_ASM_EXCEPTION_SECTION darwin_exception_section
 976
 977 #define TARGET_ASM_EH_FRAME_SECTION darwin_eh_frame_section
 978
 979 #define EH_FRAME_SECTION_NAME   "__TEXT"
 980 #define EH_FRAME_SECTION_ATTR ",coalesced,no_toc+strip_static_syms+live_support"
 981
 982 /* Java runtime class list.  */
 983 #define JCR_SECTION_NAME "__DATA,jcr,regular,no_dead_strip"
 984
 985 #undef ASM_PREFERRED_EH_DATA_FORMAT
 986 #define ASM_PREFERRED_EH_DATA_FORMAT(CODE,GLOBAL)  \
 987   (((CODE) == 2 && (GLOBAL) == 1) \
 988    ? (DW_EH_PE_pcrel | DW_EH_PE_indirect | DW_EH_PE_sdata4) : \
 989      ((CODE) == 1 || (GLOBAL) == 0) ? DW_EH_PE_pcrel : DW_EH_PE_absptr)
 990
 991 #define ASM_OUTPUT_DWARF_DELTA(FILE,SIZE,LABEL1,LABEL2)  \
 992   darwin_asm_output_dwarf_delta (FILE, SIZE, LABEL1, LABEL2)
 993
 994 #define ASM_MAYBE_OUTPUT_ENCODED_ADDR_RTX(ASM_OUT_FILE, ENCODING, SIZE, ADDR, DONE)     \
 995       if (ENCODING == ASM_PREFERRED_EH_DATA_FORMAT (2, 1)) {                            \
 996         darwin_non_lazy_pcrel (ASM_OUT_FILE, ADDR);                                     \
 997         goto DONE;                                                                      \
 998       }
 999
1000 /* Experimentally, putting jump tables in text is faster on SPEC.
1001    Also this is needed for correctness for coalesced functions.  */
1002
1003 #ifndef JUMP_TABLES_IN_TEXT_SECTION
1004 #define JUMP_TABLES_IN_TEXT_SECTION 1
1005 #endif
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 */