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, 51 Franklin Street, Fifth Floor,
  22 Boston, MA 02110-1301, 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.  Don't add more options here, add
 189    them to darwin_cpp_builtins in darwin-c.c.  */
 190
 191 #undef  CPP_SPEC
 192 #define CPP_SPEC "%{static:%{!dynamic:-D__STATIC__}}%{!static:-D__DYNAMIC__}"
 193
 194 /* This is mostly a clone of the standard LINK_COMMAND_SPEC, plus
 195    precomp, libtool, and fat build additions.  Also we
 196    don't specify a second %G after %L because libSystem is
 197    self-contained and doesn't need to link against libgcc.a.  */
 198 /* In general, random Darwin linker flags should go into LINK_SPEC
 199    instead of LINK_COMMAND_SPEC.  The command spec is better for
 200    specifying the handling of options understood by generic Unix
 201    linkers, and for positional arguments like libraries.  */
 202 #define LINK_COMMAND_SPEC "\
 203 %{!fdump=*:%{!fsyntax-only:%{!precomp:%{!c:%{!M:%{!MM:%{!E:%{!S:\
 204     %{!Zdynamiclib:%(linker)}%{Zdynamiclib:/usr/bin/libtool} \
 205     %l %X %{d} %{s} %{t} %{Z} \
 206     %{!Zdynamiclib:%{A} %{e*} %{m} %{N} %{n} %{r} %{u*} %{x} %{z}} \
 207     %{@:-o %f%u.out}%{!@:%{o*}%{!o:-o a.out}} \
 208     %{!Zdynamiclib:%{!A:%{!nostdlib:%{!nostartfiles:%S}}}} \
 209     %{L*} %(link_libgcc) %o %{fprofile-arcs|fprofile-generate|coverage:-lgcov} \
 210     %{!nostdlib:%{!nodefaultlibs:%G %L}} \
 211     %{!A:%{!nostdlib:%{!nostartfiles:%E}}} %{T*} %{F*} }}}}}}}}"
 212
 213 /* Please keep the random linker options in alphabetical order (modulo
 214    'Z' and 'no' prefixes).  Options that can only go to one of libtool
 215    or ld must be listed twice, under both !Zdynamiclib and
 216    Zdynamiclib, with one of the cases reporting an error.  */
 217 /* Note that options taking arguments may appear multiple times on a
 218    command line with different arguments each time, so put a * after
 219    their names so all of them get passed.  */
 220 #define LINK_SPEC  \
 221   "%{static}%{!static:-dynamic} \
 222    %{fgnu-runtime:%:replace-outfile(-lobjc -lobjc-gnu)}\
 223    %{!Zdynamiclib: \
 224      %{Zforce_cpusubtype_ALL:-arch %(darwin_arch) -force_cpusubtype_ALL} \
 225      %{!Zforce_cpusubtype_ALL:-arch %(darwin_subarch)} \
 226      %{Zbundle:-bundle} \
 227      %{Zbundle_loader*:-bundle_loader %*} \
 228      %{client_name*} \
 229      %{compatibility_version*:%e-compatibility_version only allowed with -dynamiclib\
 230 } \
 231      %{current_version*:%e-current_version only allowed with -dynamiclib} \
 232      %{Zforce_flat_namespace:-force_flat_namespace} \
 233      %{Zinstall_name*:%e-install_name only allowed with -dynamiclib} \
 234      %{keep_private_externs} \
 235      %{private_bundle} \
 236     } \
 237    %{Zdynamiclib: \
 238      %{Zbundle:%e-bundle not allowed with -dynamiclib} \
 239      %{Zbundle_loader*:%e-bundle_loader not allowed with -dynamiclib} \
 240      %{client_name*:%e-client_name not allowed with -dynamiclib} \
 241      %{compatibility_version*} \
 242      %{current_version*} \
 243      %{Zforce_cpusubtype_ALL:-arch_only %(darwin_arch)} \
 244      %{!Zforce_cpusubtype_ALL: -arch_only %(darwin_subarch)} \
 245      %{Zforce_flat_namespace:%e-force_flat_namespace not allowed with -dynamiclib} \
 246      %{Zinstall_name*:-install_name %*} \
 247      %{keep_private_externs:%e-keep_private_externs not allowed with -dynamiclib} \
 248      %{private_bundle:%e-private_bundle not allowed with -dynamiclib} \
 249     } \
 250    %{Zall_load:-all_load}%{Zdynamiclib:%{!Zall_load:-noall_load}} \
 251    %{Zallowable_client*:-allowable_client %*} \
 252    %{Zbind_at_load:-bind_at_load} \
 253    %{Zarch_errors_fatal:-arch_errors_fatal} \
 254    %{Zdead_strip:-dead_strip} \
 255    %{Zno_dead_strip_inits_and_terms:-no_dead_strip_inits_and_terms} \
 256    %{Zdylib_file*:-dylib_file %*} \
 257    %{Zdynamic:-dynamic}\
 258    %{Zexported_symbols_list*:-exported_symbols_list %*} \
 259    %{Zflat_namespace:-flat_namespace} \
 260    %{headerpad_max_install_names*} \
 261    %{Zimage_base*:-image_base %*} \
 262    %{Zinit*:-init %*} \
 263    %{nomultidefs} \
 264    %{Zmulti_module:-multi_module} %{Zsingle_module:-single_module} \
 265    %{Zmultiply_defined*:-multiply_defined %*} \
 266    %{Zmultiplydefinedunused*:-multiply_defined_unused %*} \
 267    %{prebind} %{noprebind} %{nofixprebinding} %{prebind_all_twolevel_modules} \
 268    %{read_only_relocs} \
 269    %{sectcreate*} %{sectorder*} %{seg1addr*} %{segprot*} \
 270    %{Zsegaddr*:-segaddr %*} \
 271    %{Zsegs_read_only_addr*:-segs_read_only_addr %*} \
 272    %{Zsegs_read_write_addr*:-segs_read_write_addr %*} \
 273    %{Zseg_addr_table*: -seg_addr_table %*} \
 274    %{Zseg_addr_table_filename*:-seg_addr_table_filename %*} \
 275    %{sub_library*} %{sub_umbrella*} \
 276    %{isysroot*:-syslibroot %*} \
 277    %{twolevel_namespace} %{twolevel_namespace_hints} \
 278    %{umbrella*} \
 279    %{undefined*} \
 280    %{Zunexported_symbols_list*:-unexported_symbols_list %*} \
 281    %{Zweak_reference_mismatches*:-weak_reference_mismatches %*} \
 282    %{!Zweak_reference_mismatches*:-weak_reference_mismatches non-weak} \
 283    %{X} \
 284    %{y*} \
 285    %{w} \
 286    %{pagezero_size*} %{segs_read_*} %{seglinkedit} %{noseglinkedit}  \
 287    %{sectalign*} %{sectobjectsymbols*} %{segcreate*} %{whyload} \
 288    %{whatsloaded} %{dylinker_install_name*} \
 289    %{dylinker} %{Mach} "
 290
 291
 292 /* Machine dependent libraries.  */
 293
 294 #define LIB_SPEC "%{!static:-lSystem}"
 295
 296 /* -dynamiclib implies -shared-libgcc just like -shared would on linux.  */
 297 #define REAL_LIBGCC_SPEC \
 298    "%{static|static-libgcc:-lgcc -lgcc_eh}\
 299     %{!static:%{!static-libgcc:\
 300       %{!Zdynamiclib:%{!shared-libgcc:-lgcc -lgcc_eh}\
 301       %{shared-libgcc:-lgcc_s -lgcc}} %{Zdynamiclib:-lgcc_s -lgcc}}}"
 302
 303 /* We specify crt0.o as -lcrt0.o so that ld will search the library path.  */
 304 /* We don't want anything to do with crt2.o in the 64-bit case;
 305    testing the PowerPC-specific -m64 flag here is a little irregular,
 306    but it's overkill to make copies of this spec for each target
 307    arch.  */
 308
 309 #undef  STARTFILE_SPEC
 310 #define STARTFILE_SPEC  \
 311   "%{!Zdynamiclib:%{Zbundle:%{!static:-lbundle1.o}} \
 312      %{!Zbundle:%{pg:%{static:-lgcrt0.o} \
 313                      %{!static:%{object:-lgcrt0.o} \
 314                                %{!object:%{preload:-lgcrt0.o} \
 315                                  %{!preload:-lgcrt1.o %{!m64: crt2.o%s}}}}} \
 316                 %{!pg:%{static:-lcrt0.o} \
 317                       %{!static:%{object:-lcrt0.o} \
 318                                 %{!object:%{preload:-lcrt0.o} \
 319                                   %{!preload:-lcrt1.o %{!m64: crt2.o%s}}}}}}}"
 320
 321 /* The native Darwin linker doesn't necessarily place files in the order
 322    that they're specified on the link line.  Thus, it is pointless
 323    to put anything in ENDFILE_SPEC.  */
 324 /* #define ENDFILE_SPEC "" */
 325
 326 /* Default Darwin ASM_SPEC, very simple.  */
 327 #define ASM_SPEC "-arch %(darwin_arch) \
 328   %{Zforce_cpusubtype_ALL:-force_cpusubtype_ALL}"
 329
 330 /* We use Dbx symbol format.  */
 331
 332 #define DBX_DEBUGGING_INFO 1
 333
 334 /* Also enable Dwarf 2 as an option.  */
 335 #define DWARF2_DEBUGGING_INFO
 336 #define PREFERRED_DEBUGGING_TYPE DBX_DEBUG
 337
 338 #define DEBUG_FRAME_SECTION   "__DWARFA,__debug_frame,coalesced,no_toc+strip_static_syms"
 339 #define DEBUG_INFO_SECTION    "__DWARFA,__debug_info"
 340 #define DEBUG_ABBREV_SECTION  "__DWARFA,__debug_abbrev"
 341 #define DEBUG_ARANGES_SECTION "__DWARFA,__debug_aranges"
 342 #define DEBUG_MACINFO_SECTION "__DWARFA,__debug_macinfo"
 343 #define DEBUG_LINE_SECTION    "__DWARFA,__debug_line"
 344 #define DEBUG_LOC_SECTION     "__DWARFA,__debug_loc"
 345 #define DEBUG_PUBNAMES_SECTION        "__DWARFA,__debug_pubnames"
 346 #define DEBUG_STR_SECTION     "__DWARFA,__debug_str"
 347 #define DEBUG_RANGES_SECTION  "__DWARFA,__debug_ranges"
 348
 349 /* When generating stabs debugging, use N_BINCL entries.  */
 350
 351 #define DBX_USE_BINCL
 352
 353 /* There is no limit to the length of stabs strings.  */
 354
 355 #define DBX_CONTIN_LENGTH 0
 356
 357 /* gdb needs a null N_SO at the end of each file for scattered loading.  */
 358
 359 #define DBX_OUTPUT_NULL_N_SO_AT_MAIN_SOURCE_FILE_END
 360
 361 /* GCC's definition of 'one_only' is the same as its definition of 'weak'.  */
 362 #define MAKE_DECL_ONE_ONLY(DECL) (DECL_WEAK (DECL) = 1)
 363
 364 /* Mach-O supports 'weak imports', and 'weak definitions' in coalesced
 365    sections.  machopic_select_section ensures that weak variables go in
 366    coalesced sections.  Weak aliases (or any other kind of aliases) are
 367    not supported.  Weak symbols that aren't visible outside the .s file
 368    are not supported.  */
 369 #define ASM_WEAKEN_DECL(FILE, DECL, NAME, ALIAS)                        \
 370   do {                                                                  \
 371     if (ALIAS)                                                          \
 372       {                                                                 \
 373         warning (0, "alias definitions not supported in Mach-O; ignored");      \
 374         break;                                                          \
 375       }                                                                 \
 376                                                                         \
 377     if (! DECL_EXTERNAL (DECL) && TREE_PUBLIC (DECL))                   \
 378       targetm.asm_out.globalize_label (FILE, NAME);                     \
 379     if (DECL_EXTERNAL (DECL))                                           \
 380       fputs ("\t.weak_reference ", FILE);                               \
 381     else if (! lookup_attribute ("weak", DECL_ATTRIBUTES (DECL))        \
 382         && lookup_attribute ("weak_import", DECL_ATTRIBUTES (DECL)))    \
 383       break;                                                            \
 384     else if (TREE_PUBLIC (DECL))                                        \
 385       fputs ("\t.weak_definition ", FILE);                              \
 386     else                                                                \
 387       break;                                                            \
 388     assemble_name (FILE, NAME);                                         \
 389     fputc ('\n', FILE);                                                 \
 390   } while (0)
 391
 392 /* Darwin has the pthread routines in libSystem, which every program
 393    links to, so there's no need for weak-ness for that.  */
 394 #define GTHREAD_USE_WEAK 0
 395
 396 /* The Darwin linker imposes two limitations on common symbols: they
 397    can't have hidden visibility, and they can't appear in dylibs.  As
 398    a consequence, we should never use common symbols to represent
 399    vague linkage. */
 400 #undef USE_COMMON_FOR_ONE_ONLY
 401 #define USE_COMMON_FOR_ONE_ONLY 0
 402
 403 /* The Darwin linker doesn't want coalesced symbols to appear in
 404    a static archive's table of contents. */
 405 #undef TARGET_WEAK_NOT_IN_ARCHIVE_TOC
 406 #define TARGET_WEAK_NOT_IN_ARCHIVE_TOC 1
 407
 408 /* We make exception information linkonce. */
 409 #undef TARGET_USES_WEAK_UNWIND_INFO
 410 #define TARGET_USES_WEAK_UNWIND_INFO 1
 411
 412 /* We need to use a nonlocal label for the start of an EH frame: the
 413    Darwin linker requires that a coalesced section start with a label. */
 414 #undef FRAME_BEGIN_LABEL
 415 #define FRAME_BEGIN_LABEL "EH_frame"
 416
 417 /* Emit a label for the FDE corresponding to DECL.  EMPTY means
 418    emit a label for an empty FDE. */
 419 #define TARGET_ASM_EMIT_UNWIND_LABEL darwin_emit_unwind_label
 420
 421 /* Our profiling scheme doesn't LP labels and counter words.  */
 422
 423 #define NO_PROFILE_COUNTERS     1
 424
 425 #undef  INIT_SECTION_ASM_OP
 426 #define INIT_SECTION_ASM_OP
 427
 428 #undef  INVOKE__main
 429
 430 #define TARGET_ASM_CONSTRUCTOR  machopic_asm_out_constructor
 431 #define TARGET_ASM_DESTRUCTOR   machopic_asm_out_destructor
 432
 433 /* Always prefix with an underscore.  */
 434
 435 #define USER_LABEL_PREFIX "_"
 436
 437 /* Don't output a .file directive.  That is only used by the assembler for
 438    error reporting.  */
 439 #undef  TARGET_ASM_FILE_START_FILE_DIRECTIVE
 440 #define TARGET_ASM_FILE_START_FILE_DIRECTIVE false
 441
 442 #undef  TARGET_ASM_FILE_END
 443 #define TARGET_ASM_FILE_END darwin_file_end
 444
 445 #define ASM_OUTPUT_SKIP(FILE,SIZE)  \
 446   fprintf (FILE, "\t.space "HOST_WIDE_INT_PRINT_UNSIGNED"\n", SIZE)
 447
 448 /* Give ObjC methods pretty symbol names.  */
 449
 450 #undef  OBJC_GEN_METHOD_LABEL
 451 #define OBJC_GEN_METHOD_LABEL(BUF,IS_INST,CLASS_NAME,CAT_NAME,SEL_NAME,NUM) \
 452   do { if (CAT_NAME)                                                    \
 453          sprintf (BUF, "%c[%s(%s) %s]", (IS_INST) ? '-' : '+',          \
 454                   (CLASS_NAME), (CAT_NAME), (SEL_NAME));                \
 455        else                                                             \
 456          sprintf (BUF, "%c[%s %s]", (IS_INST) ? '-' : '+',              \
 457                   (CLASS_NAME), (SEL_NAME));                            \
 458      } while (0)
 459
 460 /* The RTTI data (e.g., __ti4name) is common and public (and static),
 461    but it does need to be referenced via indirect PIC data pointers.
 462    The machopic_define_symbol calls are telling the machopic subsystem
 463    that the name *is* defined in this module, so it doesn't need to
 464    make them indirect.  */
 465
 466 #undef ASM_DECLARE_OBJECT_NAME
 467 #define ASM_DECLARE_OBJECT_NAME(FILE, NAME, DECL)                       \
 468   do {                                                                  \
 469     const char *xname = NAME;                                           \
 470     if (GET_CODE (XEXP (DECL_RTL (DECL), 0)) != SYMBOL_REF)             \
 471       xname = IDENTIFIER_POINTER (DECL_NAME (DECL));                    \
 472     if (! DECL_WEAK (DECL)                                              \
 473         && ((TREE_STATIC (DECL)                                         \
 474              && (!DECL_COMMON (DECL) || !TREE_PUBLIC (DECL)))           \
 475             || DECL_INITIAL (DECL)))                                    \
 476         machopic_define_symbol (DECL_RTL (DECL));                       \
 477     if ((TREE_STATIC (DECL)                                             \
 478          && (!DECL_COMMON (DECL) || !TREE_PUBLIC (DECL)))               \
 479         || DECL_INITIAL (DECL))                                         \
 480       (* targetm.encode_section_info) (DECL, DECL_RTL (DECL), false);   \
 481     ASM_OUTPUT_LABEL (FILE, xname);                                     \
 482     /* Darwin doesn't support zero-size objects, so give them a         \
 483        byte.  */                                                        \
 484     if (tree_low_cst (DECL_SIZE_UNIT (DECL), 1) == 0)                   \
 485       assemble_zeros (1);                                               \
 486   } while (0)
 487
 488 #define ASM_DECLARE_FUNCTION_NAME(FILE, NAME, DECL)                     \
 489   do {                                                                  \
 490     const char *xname = NAME;                                           \
 491     if (GET_CODE (XEXP (DECL_RTL (DECL), 0)) != SYMBOL_REF)             \
 492       xname = IDENTIFIER_POINTER (DECL_NAME (DECL));                    \
 493     if (! DECL_WEAK (DECL)                                              \
 494         && ((TREE_STATIC (DECL)                                         \
 495              && (!DECL_COMMON (DECL) || !TREE_PUBLIC (DECL)))           \
 496             || DECL_INITIAL (DECL)))                                    \
 497         machopic_define_symbol (DECL_RTL (DECL));                       \
 498     if ((TREE_STATIC (DECL)                                             \
 499          && (!DECL_COMMON (DECL) || !TREE_PUBLIC (DECL)))               \
 500         || DECL_INITIAL (DECL))                                         \
 501       (* targetm.encode_section_info) (DECL, DECL_RTL (DECL), false);   \
 502     ASM_OUTPUT_LABEL (FILE, xname);                                     \
 503   } while (0)
 504
 505 #define ASM_DECLARE_CONSTANT_NAME(FILE, NAME, EXP, SIZE)        \
 506   do {                                                          \
 507     ASM_OUTPUT_LABEL (FILE, NAME);                              \
 508     /* Darwin doesn't support zero-size objects, so give them a \
 509        byte.  */                                                \
 510     if ((SIZE) == 0)                                            \
 511       assemble_zeros (1);                                       \
 512   } while (0)
 513
 514 /* Wrap new method names in quotes so the assembler doesn't gag.
 515    Make Objective-C internal symbols local.  */
 516
 517 #undef  ASM_OUTPUT_LABELREF
 518 #define ASM_OUTPUT_LABELREF(FILE,NAME)                                       \
 519   do {                                                                       \
 520        const char *xname = (NAME);                                           \
 521        if (! strcmp (xname, "<pic base>"))                                   \
 522          machopic_output_function_base_name(FILE);                           \
 523        else if (xname[0] == '&' || xname[0] == '*')                          \
 524          {                                                                   \
 525            int len = strlen (xname);                                         \
 526            if (len > 6 && !strcmp ("$stub", xname + len - 5))                \
 527              machopic_validate_stub_or_non_lazy_ptr (xname);                 \
 528            else if (len > 7 && !strcmp ("$stub\"", xname + len - 6))         \
 529              machopic_validate_stub_or_non_lazy_ptr (xname);                 \
 530            else if (len > 14 && !strcmp ("$non_lazy_ptr", xname + len - 13)) \
 531              machopic_validate_stub_or_non_lazy_ptr (xname);                 \
 532            else if (len > 15 && !strcmp ("$non_lazy_ptr\"", xname + len - 14)) \
 533              machopic_validate_stub_or_non_lazy_ptr (xname);                 \
 534            if (xname[1] != '"' && name_needs_quotes (&xname[1]))             \
 535              fprintf (FILE, "\"%s\"", &xname[1]);                            \
 536            else                                                              \
 537              fputs (&xname[1], FILE);                                        \
 538          }                                                                   \
 539        else if (xname[0] == '+' || xname[0] == '-')                          \
 540          fprintf (FILE, "\"%s\"", xname);                                    \
 541        else if (!strncmp (xname, "_OBJC_", 6))                               \
 542          fprintf (FILE, "L%s", xname);                                       \
 543        else if (!strncmp (xname, ".objc_class_name_", 17))                   \
 544          fprintf (FILE, "%s", xname);                                        \
 545        else if (xname[0] != '"' && name_needs_quotes (xname))                \
 546          fprintf (FILE, "\"%s\"", xname);                                    \
 547        else                                                                  \
 548          asm_fprintf (FILE, "%U%s", xname);                                  \
 549   } while (0)
 550
 551 /* Output before executable code.  */
 552 #undef TEXT_SECTION_ASM_OP
 553 #define TEXT_SECTION_ASM_OP "\t.text"
 554
 555 /* Output before writable data.  */
 556
 557 #undef DATA_SECTION_ASM_OP
 558 #define DATA_SECTION_ASM_OP "\t.data"
 559
 560 #undef  ALIGN_ASM_OP
 561 #define ALIGN_ASM_OP            ".align"
 562
 563 #undef  ASM_OUTPUT_ALIGN
 564 #define ASM_OUTPUT_ALIGN(FILE,LOG)      \
 565   if ((LOG) != 0)                       \
 566     fprintf (FILE, "\t%s %d\n", ALIGN_ASM_OP, (LOG))
 567
 568 /* Ensure correct alignment of bss data.  */
 569
 570 #undef  ASM_OUTPUT_ALIGNED_DECL_LOCAL
 571 #define ASM_OUTPUT_ALIGNED_DECL_LOCAL(FILE, DECL, NAME, SIZE, ALIGN)    \
 572   do {                                                                  \
 573     unsigned HOST_WIDE_INT _new_size = SIZE;                            \
 574     fputs (".lcomm ", (FILE));                                          \
 575     assemble_name ((FILE), (NAME));                                     \
 576     if (_new_size == 0) _new_size = 1;                                  \
 577     fprintf ((FILE), ","HOST_WIDE_INT_PRINT_UNSIGNED",%u\n", _new_size, \
 578              floor_log2 ((ALIGN) / BITS_PER_UNIT));                     \
 579     if ((DECL) && ((TREE_STATIC (DECL)                                  \
 580          && (!DECL_COMMON (DECL) || !TREE_PUBLIC (DECL)))               \
 581         || DECL_INITIAL (DECL)))                                        \
 582       {                                                                 \
 583         (* targetm.encode_section_info) (DECL, DECL_RTL (DECL), false); \
 584         machopic_define_symbol (DECL_RTL (DECL));                       \
 585       }                                                                 \
 586   } while (0)
 587
 588 /* The maximum alignment which the object file format can support.
 589    For Mach-O, this is 2^15.  */
 590
 591 #undef  MAX_OFILE_ALIGNMENT
 592 #define MAX_OFILE_ALIGNMENT 0x8000
 593
 594 /* Create new Mach-O sections.  */
 595
 596 #undef  SECTION_FUNCTION
 597 #define SECTION_FUNCTION(FUNCTION, SECTION, DIRECTIVE, OBJC)            \
 598 extern void FUNCTION (void);                                            \
 599 void                                                                    \
 600 FUNCTION (void)                                                         \
 601 {                                                                       \
 602   if (in_section != SECTION)                                            \
 603     {                                                                   \
 604       if (OBJC)                                                         \
 605         objc_section_init ();                                           \
 606       if (asm_out_file)                                                 \
 607         fputs ("\t" DIRECTIVE "\n", asm_out_file);                      \
 608       in_section = SECTION;                                             \
 609       if ((SECTION == in_text_coal)                                     \
 610           || (SECTION == in_text_unlikely)                              \
 611           || (SECTION == in_text_unlikely_coal))                        \
 612         last_text_section = SECTION;                                    \
 613     }                                                                   \
 614 }                                                                       \
 615
 616 /* Darwin uses many types of special sections.  */
 617
 618 #undef  EXTRA_SECTIONS
 619 #define EXTRA_SECTIONS                                                  \
 620   in_text_coal, in_text_unlikely, in_text_unlikely_coal,                \
 621   in_const, in_const_data, in_cstring, in_literal4, in_literal8,        \
 622   in_const_coal, in_const_data_coal, in_data_coal,                      \
 623   in_constructor, in_destructor, in_mod_init, in_mod_term,              \
 624   in_objc_class, in_objc_meta_class, in_objc_category,                  \
 625   in_objc_class_vars, in_objc_instance_vars,                            \
 626   in_objc_cls_meth, in_objc_inst_meth,                                  \
 627   in_objc_cat_cls_meth, in_objc_cat_inst_meth,                          \
 628   in_objc_selector_refs,                                                \
 629   in_objc_selector_fixup,                                               \
 630   in_objc_symbols, in_objc_module_info,                                 \
 631   in_objc_protocol, in_objc_string_object,                              \
 632   in_objc_constant_string_object,                                       \
 633   in_objc_image_info,                                                   \
 634   in_objc_class_names, in_objc_meth_var_names,                          \
 635   in_objc_meth_var_types, in_objc_cls_refs,                             \
 636   in_machopic_nl_symbol_ptr,                                            \
 637   in_machopic_lazy_symbol_ptr,                                          \
 638   in_machopic_symbol_stub,                                              \
 639   in_machopic_symbol_stub1,                                             \
 640   in_machopic_picsymbol_stub,                                           \
 641   in_machopic_picsymbol_stub1,                                          \
 642   in_darwin_exception, in_darwin_eh_frame,                              \
 643   num_sections
 644
 645 #undef  EXTRA_SECTION_FUNCTIONS
 646 #define EXTRA_SECTION_FUNCTIONS                                 \
 647 static void objc_section_init (void);                           \
 648 SECTION_FUNCTION (text_coal_section,                            \
 649                   in_text_coal,                                 \
 650                   ".section __TEXT,__textcoal_nt,coalesced,"    \
 651                     "pure_instructions", 0)                     \
 652 SECTION_FUNCTION (text_unlikely_coal_section,                   \
 653                   in_text_unlikely_coal,                        \
 654                   ".section __TEXT,__text_unlikely_coal,"       \
 655                     "coalesced,pure_instructions", 0)           \
 656 SECTION_FUNCTION (const_section,                                \
 657                   in_const,                                     \
 658                   ".const", 0)                                  \
 659 SECTION_FUNCTION (const_coal_section,                           \
 660                   in_const_coal,                                \
 661                   ".section __TEXT,__const_coal,coalesced", 0)  \
 662 SECTION_FUNCTION (const_data_section,                           \
 663                   in_const_data,                                \
 664                   ".const_data", 0)                             \
 665 SECTION_FUNCTION (const_data_coal_section,                      \
 666                   in_const_data_coal,                           \
 667                   ".section __DATA,__const_coal,coalesced", 0)  \
 668 SECTION_FUNCTION (data_coal_section,                            \
 669                   in_data_coal,                                 \
 670                   ".section __DATA,__datacoal_nt,coalesced", 0) \
 671 SECTION_FUNCTION (cstring_section,                              \
 672                   in_cstring,                                   \
 673                   ".cstring", 0)                                \
 674 SECTION_FUNCTION (literal4_section,                             \
 675                   in_literal4,                                  \
 676                   ".literal4", 0)                               \
 677 SECTION_FUNCTION (literal8_section,                             \
 678                   in_literal8,                                  \
 679                   ".literal8", 0)                               \
 680 SECTION_FUNCTION (constructor_section,                          \
 681                   in_constructor,                               \
 682                   ".constructor", 0)                            \
 683 SECTION_FUNCTION (mod_init_section,                             \
 684                   in_mod_init,                                  \
 685                   ".mod_init_func", 0)                          \
 686 SECTION_FUNCTION (mod_term_section,                             \
 687                   in_mod_term,                                  \
 688                   ".mod_term_func", 0)                          \
 689 SECTION_FUNCTION (destructor_section,                           \
 690                   in_destructor,                                \
 691                   ".destructor", 0)                             \
 692 SECTION_FUNCTION (objc_class_section,                           \
 693                   in_objc_class,                                \
 694                   ".objc_class", 1)                             \
 695 SECTION_FUNCTION (objc_meta_class_section,                      \
 696                   in_objc_meta_class,                           \
 697                   ".objc_meta_class", 1)                        \
 698 SECTION_FUNCTION (objc_category_section,                        \
 699                   in_objc_category,                             \
 700                 ".objc_category", 1)                            \
 701 SECTION_FUNCTION (objc_class_vars_section,                      \
 702                   in_objc_class_vars,                           \
 703                   ".objc_class_vars", 1)                        \
 704 SECTION_FUNCTION (objc_instance_vars_section,                   \
 705                   in_objc_instance_vars,                        \
 706                   ".objc_instance_vars", 1)                     \
 707 SECTION_FUNCTION (objc_cls_meth_section,                        \
 708                   in_objc_cls_meth,                             \
 709                   ".objc_cls_meth", 1)                          \
 710 SECTION_FUNCTION (objc_inst_meth_section,                       \
 711                   in_objc_inst_meth,                            \
 712                   ".objc_inst_meth", 1)                         \
 713 SECTION_FUNCTION (objc_cat_cls_meth_section,                    \
 714                   in_objc_cat_cls_meth,                         \
 715                   ".objc_cat_cls_meth", 1)                      \
 716 SECTION_FUNCTION (objc_cat_inst_meth_section,                   \
 717                   in_objc_cat_inst_meth,                        \
 718                   ".objc_cat_inst_meth", 1)                     \
 719 SECTION_FUNCTION (objc_selector_refs_section,                   \
 720                   in_objc_selector_refs,                        \
 721                   ".objc_message_refs", 1)                      \
 722 SECTION_FUNCTION (objc_selector_fixup_section,                               \
 723                   in_objc_selector_fixup,                                    \
 724                   ".section __OBJC, __sel_fixup, regular, no_dead_strip", 1) \
 725 SECTION_FUNCTION (objc_symbols_section,                                 \
 726                   in_objc_symbols,                                      \
 727                   ".objc_symbols", 1)                                   \
 728 SECTION_FUNCTION (objc_module_info_section,                             \
 729                   in_objc_module_info,                                  \
 730                   ".objc_module_info", 1)                               \
 731 SECTION_FUNCTION (objc_protocol_section,                                \
 732                   in_objc_protocol,                                     \
 733                   ".objc_protocol", 1)                                  \
 734 SECTION_FUNCTION (objc_string_object_section,                           \
 735                   in_objc_string_object,                                \
 736                   ".objc_string_object", 1)                             \
 737 SECTION_FUNCTION (objc_constant_string_object_section,                  \
 738                   in_objc_constant_string_object,                       \
 739                   ".section __OBJC, __cstring_object, regular, "        \
 740                     "no_dead_strip", 1)                                 \
 741 /* Fix-and-Continue image marker.  */                                   \
 742 SECTION_FUNCTION (objc_image_info_section,                              \
 743                   in_objc_image_info,                                   \
 744                   ".section __OBJC, __image_info, regular, "            \
 745                     "no_dead_strip", 1)                                 \
 746 SECTION_FUNCTION (objc_class_names_section,                             \
 747                 in_objc_class_names,                                    \
 748                 ".objc_class_names", 1)                                 \
 749 SECTION_FUNCTION (objc_meth_var_names_section,                          \
 750                 in_objc_meth_var_names,                                 \
 751                 ".objc_meth_var_names", 1)                              \
 752 SECTION_FUNCTION (objc_meth_var_types_section,                          \
 753                 in_objc_meth_var_types,                                 \
 754                 ".objc_meth_var_types", 1)                              \
 755 SECTION_FUNCTION (objc_cls_refs_section,                                \
 756                 in_objc_cls_refs,                                       \
 757                 ".objc_cls_refs", 1)                                    \
 758 \
 759 SECTION_FUNCTION (machopic_lazy_symbol_ptr_section,                     \
 760                 in_machopic_lazy_symbol_ptr,                            \
 761                 ".lazy_symbol_pointer", 0)                              \
 762 SECTION_FUNCTION (machopic_nl_symbol_ptr_section,                       \
 763                 in_machopic_nl_symbol_ptr,                              \
 764                 ".non_lazy_symbol_pointer", 0)                          \
 765 SECTION_FUNCTION (machopic_symbol_stub_section,                         \
 766                 in_machopic_symbol_stub,                                \
 767                 ".symbol_stub", 0)                                      \
 768 SECTION_FUNCTION (machopic_symbol_stub1_section,                        \
 769                 in_machopic_symbol_stub1,                               \
 770                 ".section __TEXT,__symbol_stub1,symbol_stubs,"          \
 771                   "pure_instructions,16", 0)                            \
 772 SECTION_FUNCTION (machopic_picsymbol_stub_section,                      \
 773                 in_machopic_picsymbol_stub,                             \
 774                 ".picsymbol_stub", 0)                                   \
 775 SECTION_FUNCTION (machopic_picsymbol_stub1_section,                     \
 776                 in_machopic_picsymbol_stub1,                            \
 777                 ".section __TEXT,__picsymbolstub1,symbol_stubs,"        \
 778                   "pure_instructions,32", 0)                            \
 779 SECTION_FUNCTION (darwin_exception_section,                             \
 780                 in_darwin_exception,                                    \
 781                 ".section __DATA,__gcc_except_tab", 0)                  \
 782 SECTION_FUNCTION (darwin_eh_frame_section,                              \
 783                 in_darwin_eh_frame,                                     \
 784                 ".section " EH_FRAME_SECTION_NAME ",__eh_frame"         \
 785                   EH_FRAME_SECTION_ATTR, 0)                             \
 786 \
 787 static void                                     \
 788 objc_section_init (void)                        \
 789 {                                               \
 790   static int been_here = 0;                     \
 791                                                 \
 792   if (been_here == 0)                           \
 793     {                                           \
 794       been_here = 1;                            \
 795           /* written, cold -> hot */            \
 796       objc_cat_cls_meth_section ();             \
 797       objc_cat_inst_meth_section ();            \
 798       objc_string_object_section ();            \
 799       objc_constant_string_object_section ();   \
 800       objc_selector_refs_section ();            \
 801       objc_selector_fixup_section ();           \
 802       objc_cls_refs_section ();                 \
 803       objc_class_section ();                    \
 804       objc_meta_class_section ();               \
 805           /* shared, hot -> cold */             \
 806       objc_cls_meth_section ();                 \
 807       objc_inst_meth_section ();                \
 808       objc_protocol_section ();                 \
 809       objc_class_names_section ();              \
 810       objc_meth_var_types_section ();           \
 811       objc_meth_var_names_section ();           \
 812       objc_category_section ();                 \
 813       objc_class_vars_section ();               \
 814       objc_instance_vars_section ();            \
 815       objc_module_info_section ();              \
 816       objc_symbols_section ();                  \
 817     }                                           \
 818 }
 819
 820 #define READONLY_DATA_SECTION const_section
 821
 822 #undef  TARGET_ASM_SELECT_SECTION
 823 #define TARGET_ASM_SELECT_SECTION machopic_select_section
 824 #define USE_SELECT_SECTION_FOR_FUNCTIONS
 825
 826 #undef  TARGET_ASM_SELECT_RTX_SECTION
 827 #define TARGET_ASM_SELECT_RTX_SECTION machopic_select_rtx_section
 828 #undef  TARGET_ASM_UNIQUE_SECTION
 829 #define TARGET_ASM_UNIQUE_SECTION darwin_unique_section
 830 #undef  TARGET_ASM_FUNCTION_RODATA_SECTION
 831 #define TARGET_ASM_FUNCTION_RODATA_SECTION default_no_function_rodata_section
 832
 833
 834 #define ASM_DECLARE_UNRESOLVED_REFERENCE(FILE,NAME)                     \
 835     do {                                                                \
 836          if (FILE) {                                                    \
 837            if (MACHOPIC_INDIRECT)                                       \
 838              fprintf (FILE, "\t.lazy_reference ");                      \
 839            else                                                         \
 840              fprintf (FILE, "\t.reference ");                           \
 841            assemble_name (FILE, NAME);                                  \
 842            fprintf (FILE, "\n");                                        \
 843          }                                                              \
 844        } while (0)
 845
 846 #define ASM_DECLARE_CLASS_REFERENCE(FILE,NAME)                          \
 847     do {                                                                \
 848          if (FILE) {                                                    \
 849            fprintf (FILE, "\t");                                        \
 850            assemble_name (FILE, NAME);                                  \
 851            fprintf (FILE, "=0\n");                                      \
 852            (*targetm.asm_out.globalize_label) (FILE, NAME);             \
 853          }                                                              \
 854        } while (0)
 855
 856 /* Globalizing directive for a label.  */
 857 #define GLOBAL_ASM_OP ".globl "
 858 #define TARGET_ASM_GLOBALIZE_LABEL darwin_globalize_label
 859
 860 /* Emit an assembler directive to set visibility for a symbol.  Used
 861    to support visibility attribute and Darwin's private extern
 862    feature.  */
 863 #undef TARGET_ASM_ASSEMBLE_VISIBILITY
 864 #define TARGET_ASM_ASSEMBLE_VISIBILITY darwin_assemble_visibility
 865
 866 /* Extra attributes for Darwin.  */
 867 #define SUBTARGET_ATTRIBUTE_TABLE                                            \
 868   /* { name, min_len, max_len, decl_req, type_req, fn_type_req, handler } */ \
 869   { "weak_import", 0, 0, true, false, false,                                 \
 870     darwin_handle_weak_import_attribute }
 871
 872 #undef ASM_GENERATE_INTERNAL_LABEL
 873 #define ASM_GENERATE_INTERNAL_LABEL(LABEL,PREFIX,NUM)   \
 874   sprintf (LABEL, "*%s%ld", PREFIX, (long)(NUM))
 875
 876 #undef TARGET_ASM_MARK_DECL_PRESERVED
 877 #define TARGET_ASM_MARK_DECL_PRESERVED darwin_mark_decl_preserved
 878
 879 /* Set on a symbol with SYMBOL_FLAG_FUNCTION or
 880    MACHO_SYMBOL_FLAG_VARIABLE to indicate that the function or
 881    variable has been defined in this translation unit.  */
 882
 883 #define MACHO_SYMBOL_FLAG_VARIABLE (SYMBOL_FLAG_MACH_DEP)
 884 #define MACHO_SYMBOL_FLAG_DEFINED ((SYMBOL_FLAG_MACH_DEP) << 1)
 885
 886 /* Set on a symbol to indicate when fix-and-continue style code
 887    generation is being used and the symbol refers to a static symbol
 888    that should be rebound from new instances of a translation unit to
 889    the original instance of the data.  */
 890
 891 #define MACHO_SYMBOL_STATIC ((SYMBOL_FLAG_MACH_DEP) << 2)
 892
 893 /* Symbolic names for various things we might know about a symbol.  */
 894
 895 enum machopic_addr_class {
 896   MACHOPIC_UNDEFINED,
 897   MACHOPIC_DEFINED_DATA,
 898   MACHOPIC_UNDEFINED_DATA,
 899   MACHOPIC_DEFINED_FUNCTION,
 900   MACHOPIC_UNDEFINED_FUNCTION
 901 };
 902
 903 /* Macros defining the various PIC cases.  */
 904
 905 #define MACHO_DYNAMIC_NO_PIC_P  (TARGET_DYNAMIC_NO_PIC)
 906 #define MACHOPIC_INDIRECT       (flag_pic || MACHO_DYNAMIC_NO_PIC_P)
 907 #define MACHOPIC_JUST_INDIRECT  (flag_pic == 1 || MACHO_DYNAMIC_NO_PIC_P)
 908 #define MACHOPIC_PURE           (flag_pic == 2 && ! MACHO_DYNAMIC_NO_PIC_P)
 909
 910 #undef TARGET_ENCODE_SECTION_INFO
 911 #define TARGET_ENCODE_SECTION_INFO  darwin_encode_section_info
 912 #undef TARGET_STRIP_NAME_ENCODING
 913 #define TARGET_STRIP_NAME_ENCODING  default_strip_name_encoding
 914
 915 #define GEN_BINDER_NAME_FOR_STUB(BUF,STUB,STUB_LENGTH)          \
 916   do {                                                          \
 917     const char *const stub_ = (STUB);                           \
 918     char *buffer_ = (BUF);                                      \
 919     strcpy (buffer_, stub_);                                    \
 920     if (stub_[0] == '"')                                        \
 921       {                                                         \
 922         strcpy (buffer_ + (STUB_LENGTH) - 1, "_binder\"");      \
 923       }                                                         \
 924     else                                                        \
 925       {                                                         \
 926         strcpy (buffer_ + (STUB_LENGTH), "_binder");            \
 927       }                                                         \
 928   } while (0)
 929
 930 #define GEN_SYMBOL_NAME_FOR_SYMBOL(BUF,SYMBOL,SYMBOL_LENGTH)    \
 931   do {                                                          \
 932     const char *const symbol_ = (SYMBOL);                       \
 933     char *buffer_ = (BUF);                                      \
 934     if (name_needs_quotes (symbol_) && symbol_[0] != '"')       \
 935       {                                                         \
 936           sprintf (buffer_, "\"%s\"", symbol_);                 \
 937       }                                                         \
 938     else                                                        \
 939       {                                                         \
 940         strcpy (buffer_, symbol_);                              \
 941       }                                                         \
 942   } while (0)
 943
 944 /* Given a symbol name string, create the lazy pointer version
 945    of the symbol name.  */
 946
 947 #define GEN_LAZY_PTR_NAME_FOR_SYMBOL(BUF,SYMBOL,SYMBOL_LENGTH)  \
 948   do {                                                          \
 949     const char *symbol_ = (SYMBOL);                             \
 950     char *buffer_ = (BUF);                                      \
 951     if (symbol_[0] == '"')                                      \
 952       {                                                         \
 953         strcpy (buffer_, "\"L");                                \
 954         strcpy (buffer_ + 2, symbol_ + 1);                      \
 955         strcpy (buffer_ + (SYMBOL_LENGTH), "$lazy_ptr\"");      \
 956       }                                                         \
 957     else if (name_needs_quotes (symbol_))                       \
 958       {                                                         \
 959         strcpy (buffer_, "\"L");                                \
 960         strcpy (buffer_ + 2, symbol_);                          \
 961         strcpy (buffer_ + (SYMBOL_LENGTH) + 2, "$lazy_ptr\"");  \
 962       }                                                         \
 963     else                                                        \
 964       {                                                         \
 965         strcpy (buffer_, "L");                                  \
 966         strcpy (buffer_ + 1, symbol_);                          \
 967         strcpy (buffer_ + (SYMBOL_LENGTH) + 1, "$lazy_ptr");    \
 968       }                                                         \
 969   } while (0)
 970
 971 #define TARGET_ASM_EXCEPTION_SECTION darwin_exception_section
 972
 973 #define TARGET_ASM_EH_FRAME_SECTION darwin_eh_frame_section
 974
 975 #define EH_FRAME_SECTION_NAME   "__TEXT"
 976 #define EH_FRAME_SECTION_ATTR ",coalesced,no_toc+strip_static_syms+live_support"
 977
 978 /* Java runtime class list.  */
 979 #define JCR_SECTION_NAME "__DATA,jcr,regular,no_dead_strip"
 980
 981 #undef ASM_PREFERRED_EH_DATA_FORMAT
 982 #define ASM_PREFERRED_EH_DATA_FORMAT(CODE,GLOBAL)  \
 983   (((CODE) == 2 && (GLOBAL) == 1) \
 984    ? (DW_EH_PE_pcrel | DW_EH_PE_indirect | DW_EH_PE_sdata4) : \
 985      ((CODE) == 1 || (GLOBAL) == 0) ? DW_EH_PE_pcrel : DW_EH_PE_absptr)
 986
 987 #define ASM_OUTPUT_DWARF_DELTA(FILE,SIZE,LABEL1,LABEL2)  \
 988   darwin_asm_output_dwarf_delta (FILE, SIZE, LABEL1, LABEL2)
 989
 990 #define ASM_MAYBE_OUTPUT_ENCODED_ADDR_RTX(ASM_OUT_FILE, ENCODING, SIZE, ADDR, DONE)     \
 991       if (ENCODING == ASM_PREFERRED_EH_DATA_FORMAT (2, 1)) {                            \
 992         darwin_non_lazy_pcrel (ASM_OUT_FILE, ADDR);                                     \
 993         goto DONE;                                                                      \
 994       }
 995
 996 /* Experimentally, putting jump tables in text is faster on SPEC.
 997    Also this is needed for correctness for coalesced functions.  */
 998
 999 #ifndef JUMP_TABLES_IN_TEXT_SECTION
1000 #define JUMP_TABLES_IN_TEXT_SECTION 1
1001 #endif
1002
1003 #define TARGET_TERMINATE_DW2_EH_FRAME_INFO false
1004
1005 #undef TARGET_ASM_NAMED_SECTION
1006 #define TARGET_ASM_NAMED_SECTION darwin_asm_named_section
1007
1008 #define DARWIN_REGISTER_TARGET_PRAGMAS()                        \
1009   do {                                                          \
1010     c_register_pragma (0, "mark", darwin_pragma_ignore);        \
1011     c_register_pragma (0, "options", darwin_pragma_options);    \
1012     c_register_pragma (0, "segment", darwin_pragma_ignore);     \
1013     c_register_pragma (0, "unused", darwin_pragma_unused);      \
1014   } while (0)
1015
1016 #undef ASM_APP_ON
1017 #define ASM_APP_ON ""
1018 #undef ASM_APP_OFF
1019 #define ASM_APP_OFF ""
1020
1021 void darwin_register_frameworks (const char *, const char *, int);
1022 void darwin_register_objc_includes (const char *, const char *, int);
1023 #define TARGET_EXTRA_PRE_INCLUDES darwin_register_objc_includes
1024 #define TARGET_EXTRA_INCLUDES darwin_register_frameworks
1025
1026 void add_framework_path (char *);
1027 #define TARGET_OPTF add_framework_path
1028
1029 #define TARGET_HAS_F_SETLKW
1030
1031 /* All new versions of Darwin have C99 functions.  */
1032 #define TARGET_C99_FUNCTIONS
1033
1034 #define WINT_TYPE "int"
1035
1036 #endif /* CONFIG_DARWIN_H */