gcc/config/darwin.h

   1 /* Target definitions for Darwin (Mac OS X) systems.
   2    Copyright (C) 1989, 1990, 1991, 1992, 1993, 2000, 2001, 2002, 2003, 2004
   3    Free Software Foundation, Inc.
   4    Contributed by Apple Computer Inc.
   5
   6 This file is part of GCC.
   7
   8 GCC is free software; you can redistribute it and/or modify
   9 it under the terms of the GNU General Public License as published by
  10 the Free Software Foundation; either version 2, or (at your option)
  11 any later version.
  12
  13 GCC is distributed in the hope that it will be useful,
  14 but WITHOUT ANY WARRANTY; without even the implied warranty of
  15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16 GNU General Public License for more details.
  17
  18 You should have received a copy of the GNU General Public License
  19 along with GCC; see the file COPYING.  If not, write to
  20 the Free Software Foundation, 59 Temple Place - Suite 330,
  21 Boston, MA 02111-1307, USA.  */
  22
  23 #ifndef CONFIG_DARWIN_H
  24 #define CONFIG_DARWIN_H
  25
  26 /* The definitions in this file are common to all processor types
  27    running Darwin, which is the kernel for Mac OS X.  Darwin is
  28    basically a BSD user layer laid over a Mach kernel, then evolved
  29    for many years (at NeXT) in parallel with other Unix systems.  So
  30    while the runtime is a somewhat idiosyncratic Mach-based thing,
  31    other definitions look like they would for a BSD variant.  */
  32
  33 /* Although NeXT ran on many different architectures, as of Jan 2001
  34    the only supported Darwin targets are PowerPC and x86.  */
  35
  36 /* One of Darwin's NeXT legacies is the Mach-O format, which is partly
  37    like a.out and partly like COFF, with additional features like
  38    multi-architecture binary support.  */
  39
  40 #define OBJECT_FORMAT_MACHO
  41
  42 /* Suppress g++ attempt to link in the math library automatically. */
  43 #define MATH_LIBRARY ""
  44
  45 /* We have atexit.  */
  46
  47 #define HAVE_ATEXIT
  48
  49 /* Define an empty body for the function do_global_dtors() in libgcc2.c.  */
  50
  51 #define DO_GLOBAL_DTORS_BODY
  52
  53 /* The string value for __SIZE_TYPE__.  */
  54
  55 #ifndef SIZE_TYPE
  56 #define SIZE_TYPE "long unsigned int"
  57 #endif
  58
  59 /* Type used for ptrdiff_t, as a string used in a declaration.  */
  60
  61 #undef  PTRDIFF_TYPE
  62 #define PTRDIFF_TYPE "int"
  63
  64 /* wchar_t is int.  */
  65
  66 #undef  WCHAR_TYPE
  67 #define WCHAR_TYPE "int"
  68 #undef  WCHAR_TYPE_SIZE
  69 #define WCHAR_TYPE_SIZE 32
  70
  71 /* Default to using the NeXT-style runtime, since that's what is
  72    pre-installed on Darwin systems.  */
  73
  74 #define NEXT_OBJC_RUNTIME
  75
  76 /* Don't default to pcc-struct-return, because gcc is the only compiler, and
  77    we want to retain compatibility with older gcc versions.  */
  78
  79 #undef  DEFAULT_PCC_STRUCT_RETURN
  80 #define DEFAULT_PCC_STRUCT_RETURN 0
  81
  82 /* This table intercepts weirdo options whose names would interfere
  83    with normal driver conventions, and either translates them into
  84    standardly-named options, or adds a 'Z' so that they can get to
  85    specs processing without interference.
  86
  87    Do not expand a linker option to "-Xlinker -<option>", since that
  88    forfeits the ability to control via spec strings later.  However,
  89    as a special exception, do this translation with -filelist, because
  90    otherwise the driver will think there are no input files and quit.
  91    (The alternative would be to hack the driver to recognize -filelist
  92    specially, but it's simpler to use the translation table.)
  93
  94    Note that an option name with a prefix that matches another option
  95    name, that also takes an argument, needs to be modified so the
  96    prefix is different, otherwise a '*' after the shorter option will
  97    match with the longer one.
  98
  99    The SUBTARGET_OPTION_TRANSLATE_TABLE macro, which _must_ be defined
 100    in gcc/config/{i386,rs6000}/darwin.h, should contain any additional
 101    command-line option translations specific to the particular target
 102    architecture.  */
 103
 104 #define TARGET_OPTION_TRANSLATE_TABLE \
 105   { "-all_load", "-Zall_load" },  \
 106   { "-allowable_client", "-Zallowable_client" },  \
 107   { "-arch_errors_fatal", "-Zarch_errors_fatal" },  \
 108   { "-bind_at_load", "-Zbind_at_load" },  \
 109   { "-bundle", "-Zbundle" },  \
 110   { "-bundle_loader", "-Zbundle_loader" },  \
 111   { "-weak_reference_mismatches", "-Zweak_reference_mismatches" },  \
 112   { "-dead_strip", "-Zdead_strip" }, \
 113   { "-no_dead_strip_inits_and_terms", "-Zno_dead_strip_inits_and_terms" }, \
 114   { "-dependency-file", "-MF" }, \
 115   { "-dylib_file", "-Zdylib_file" }, \
 116   { "-dynamic", "-Zdynamic" },  \
 117   { "-dynamiclib", "-Zdynamiclib" },  \
 118   { "-exported_symbols_list", "-Zexported_symbols_list" },  \
 119   { "-segaddr", "-Zsegaddr" }, \
 120   { "-segs_read_only_addr", "-Zsegs_read_only_addr" }, \
 121   { "-segs_read_write_addr", "-Zsegs_read_write_addr" }, \
 122   { "-seg_addr_table", "-Zseg_addr_table" }, \
 123   { "-seg_addr_table_filename", "-Zseg_addr_table_filename" }, \
 124   { "-filelist", "-Xlinker -filelist -Xlinker" },  \
 125   { "-framework", "-Xlinker -framework -Xlinker" },  \
 126   { "-flat_namespace", "-Zflat_namespace" },  \
 127   { "-force_cpusubtype_ALL", "-Zforce_cpusubtype_ALL" },  \
 128   { "-force_flat_namespace", "-Zforce_flat_namespace" },  \
 129   { "-image_base", "-Zimage_base" },  \
 130   { "-init", "-Zinit" },  \
 131   { "-install_name", "-Zinstall_name" },  \
 132   { "-multiply_defined_unused", "-Zmultiplydefinedunused" },  \
 133   { "-multiply_defined", "-Zmultiply_defined" },  \
 134   { "-multi_module", "-Zmulti_module" },  \
 135   { "-static", "-static -Wa,-static" },  \
 136   { "-single_module", "-Zsingle_module" },  \
 137   { "-unexported_symbols_list", "-Zunexported_symbols_list" }, \
 138   SUBTARGET_OPTION_TRANSLATE_TABLE
 139
 140 /* Nonzero if the user has chosen to force sizeof(bool) to be 1
 141    by providing the -mone-byte-bool switch.  It would be better
 142    to use SUBTARGET_SWITCHES for this instead of SUBTARGET_OPTIONS,
 143    but there are no more bits in rs6000 TARGET_SWITCHES.  Note
 144    that this switch has no "no-" variant. */
 145 extern const char *darwin_one_byte_bool;
 146
 147 extern int darwin_fix_and_continue;
 148 extern const char *darwin_fix_and_continue_switch;
 149
 150 #undef SUBTARGET_OPTIONS
 151 #define SUBTARGET_OPTIONS \
 152   {"one-byte-bool", &darwin_one_byte_bool, N_("Set sizeof(bool) to 1"), 0 }, \
 153   {"fix-and-continue", &darwin_fix_and_continue_switch,                 \
 154    N_("Generate code suitable for fast turn around debugging"), 0},     \
 155   {"no-fix-and-continue", &darwin_fix_and_continue_switch,              \
 156    N_("Don't generate code suitable for fast turn around debugging"), 0}
 157
 158 /* These compiler options take n arguments.  */
 159
 160 #undef  WORD_SWITCH_TAKES_ARG
 161 #define WORD_SWITCH_TAKES_ARG(STR)              \
 162   (DEFAULT_WORD_SWITCH_TAKES_ARG (STR) ? 1 :    \
 163    !strcmp (STR, "Zallowable_client") ? 1 :     \
 164    !strcmp (STR, "arch") ? 1 :                  \
 165    !strcmp (STR, "arch_only") ? 1 :             \
 166    !strcmp (STR, "Zbundle_loader") ? 1 :        \
 167    !strcmp (STR, "client_name") ? 1 :           \
 168    !strcmp (STR, "compatibility_version") ? 1 : \
 169    !strcmp (STR, "current_version") ? 1 :       \
 170    !strcmp (STR, "Zdylib_file") ? 1 :           \
 171    !strcmp (STR, "Zexported_symbols_list") ? 1 : \
 172    !strcmp (STR, "Zimage_base") ? 1 :           \
 173    !strcmp (STR, "Zinit") ? 1 :                 \
 174    !strcmp (STR, "Zinstall_name") ? 1 :         \
 175    !strcmp (STR, "Zmultiplydefinedunused") ? 1 : \
 176    !strcmp (STR, "Zmultiply_defined") ? 1 :     \
 177    !strcmp (STR, "precomp-trustfile") ? 1 :     \
 178    !strcmp (STR, "read_only_relocs") ? 1 :      \
 179    !strcmp (STR, "sectcreate") ? 3 :            \
 180    !strcmp (STR, "sectorder") ? 3 :             \
 181    !strcmp (STR, "Zsegaddr") ? 2 :              \
 182    !strcmp (STR, "Zsegs_read_only_addr") ? 1 :  \
 183    !strcmp (STR, "Zsegs_read_write_addr") ? 1 : \
 184    !strcmp (STR, "Zseg_addr_table") ? 1 :       \
 185    !strcmp (STR, "Zseg_addr_table_filename") ?1 :\
 186    !strcmp (STR, "seg1addr") ? 1 :              \
 187    !strcmp (STR, "segprot") ? 3 :               \
 188    !strcmp (STR, "sub_library") ? 1 :           \
 189    !strcmp (STR, "sub_umbrella") ? 1 :          \
 190    !strcmp (STR, "umbrella") ? 1 :              \
 191    !strcmp (STR, "undefined") ? 1 :             \
 192    !strcmp (STR, "Zunexported_symbols_list") ? 1 : \
 193    !strcmp (STR, "Zweak_reference_mismatches") ? 1 : \
 194    !strcmp (STR, "pagezero_size") ? 1 :         \
 195    !strcmp (STR, "segs_read_only_addr") ? 1 :   \
 196    !strcmp (STR, "segs_read_write_addr") ? 1 :  \
 197    !strcmp (STR, "sectalign") ? 3 :             \
 198    !strcmp (STR, "sectobjectsymbols") ? 2 :     \
 199    !strcmp (STR, "segcreate") ? 3 :             \
 200    !strcmp (STR, "dylinker_install_name") ? 1 : \
 201    0)
 202
 203 /* Machine dependent cpp options.  __APPLE_CC__ is defined as the
 204    Apple include files expect it to be defined and won't work if it
 205    isn't.  */
 206
 207 #undef  CPP_SPEC
 208 #define CPP_SPEC "%{static:%{!dynamic:-D__STATIC__}}%{!static:-D__DYNAMIC__}\
 209     -D__APPLE_CC__=1"
 210
 211 /* This is mostly a clone of the standard LINK_COMMAND_SPEC, plus
 212    precomp, libtool, and fat build additions.  Also we
 213    don't specify a second %G after %L because libSystem is
 214    self-contained and doesn't need to link against libgcc.a.  */
 215 /* In general, random Darwin linker flags should go into LINK_SPEC
 216    instead of LINK_COMMAND_SPEC.  The command spec is better for
 217    specifying the handling of options understood by generic Unix
 218    linkers, and for positional arguments like libraries.  */
 219 #define LINK_COMMAND_SPEC "\
 220 %{!fdump=*:%{!fsyntax-only:%{!precomp:%{!c:%{!M:%{!MM:%{!E:%{!S:\
 221     %{!Zdynamiclib:%(linker)}%{Zdynamiclib:/usr/bin/libtool} \
 222     %l %X %{d} %{s} %{t} %{Z} \
 223     %{!Zdynamiclib:%{A} %{e*} %{m} %{N} %{n} %{r} %{u*} %{x} %{z}} \
 224     %{@:-o %f%u.out}%{!@:%{o*}%{!o:-o a.out}} \
 225     %{!Zdynamiclib:%{!A:%{!nostdlib:%{!nostartfiles:%S}}}} \
 226     %{L*} %(link_libgcc) %o %{fprofile-arcs|fprofile-generate:-lgcov} \
 227     %{!nostdlib:%{!nodefaultlibs:%G %L}} \
 228     %{!A:%{!nostdlib:%{!nostartfiles:%E}}} %{T*} %{F*} }}}}}}}}"
 229
 230 /* Please keep the random linker options in alphabetical order (modulo
 231    'Z' and 'no' prefixes).  Options that can only go to one of libtool
 232    or ld must be listed twice, under both !Zdynamiclib and
 233    Zdynamiclib, with one of the cases reporting an error.  */
 234 /* Note that options taking arguments may appear multiple times on a
 235    command line with different arguments each time, so put a * after
 236    their names so all of them get passed.  */
 237 #define LINK_SPEC  \
 238   "%{static}%{!static:-dynamic} \
 239    %{fgnu-runtime:%:replace-outfile(-lobjc -lobjc-gnu)}\
 240    %{!Zdynamiclib: \
 241      %{Zforce_cpusubtype_ALL:-arch %(darwin_arch) -force_cpusubtype_ALL} \
 242      %{!Zforce_cpusubtype_ALL:-arch %(darwin_subarch)} \
 243      %{Zbundle:-bundle} \
 244      %{Zbundle_loader*:-bundle_loader %*} \
 245      %{client_name*} \
 246      %{compatibility_version*:%e-compatibility_version only allowed with -dynamiclib\
 247 } \
 248      %{current_version*:%e-current_version only allowed with -dynamiclib} \
 249      %{Zforce_flat_namespace:-force_flat_namespace} \
 250      %{Zinstall_name*:%e-install_name only allowed with -dynamiclib} \
 251      %{keep_private_externs} \
 252      %{private_bundle} \
 253     } \
 254    %{Zdynamiclib: \
 255      %{Zbundle:%e-bundle not allowed with -dynamiclib} \
 256      %{Zbundle_loader*:%e-bundle_loader not allowed with -dynamiclib} \
 257      %{client_name*:%e-client_name not allowed with -dynamiclib} \
 258      %{compatibility_version*} \
 259      %{current_version*} \
 260      %{Zforce_cpusubtype_ALL:-arch_only %(darwin_arch)} \
 261      %{!Zforce_cpusubtype_ALL: -arch_only %(darwin_subarch)} \
 262      %{Zforce_flat_namespace:%e-force_flat_namespace not allowed with -dynamiclib} \
 263      %{Zinstall_name*:-install_name %*} \
 264      %{keep_private_externs:%e-keep_private_externs not allowed with -dynamiclib} \
 265      %{private_bundle:%e-private_bundle not allowed with -dynamiclib} \
 266     } \
 267    %{Zall_load:-all_load}%{Zdynamiclib:%{!Zall_load:-noall_load}} \
 268    %{Zallowable_client*:-allowable_client %*} \
 269    %{Zbind_at_load:-bind_at_load} \
 270    %{Zarch_errors_fatal:-arch_errors_fatal} \
 271    %{Zdead_strip:-dead_strip} \
 272    %{Zno_dead_strip_inits_and_terms:-no_dead_strip_inits_and_terms} \
 273    %{Zdylib_file*:-dylib_file %*} \
 274    %{Zdynamic:-dynamic}\
 275    %{Zexported_symbols_list*:-exported_symbols_list %*} \
 276    %{Zflat_namespace:-flat_namespace} \
 277    %{headerpad_max_install_names*} \
 278    %{Zimage_base*:-image_base %*} \
 279    %{Zinit*:-init %*} \
 280    %{nomultidefs} \
 281    %{Zmulti_module:-multi_module} %{Zsingle_module:-single_module} \
 282    %{Zmultiply_defined*:-multiply_defined %*} \
 283    %{Zmultiplydefinedunused*:-multiply_defined_unused %*} \
 284    %{prebind} %{noprebind} %{nofixprebinding} %{prebind_all_twolevel_modules} \
 285    %{read_only_relocs} \
 286    %{sectcreate*} %{sectorder*} %{seg1addr*} %{segprot*} \
 287    %{Zsegaddr*:-segaddr %*} \
 288    %{Zsegs_read_only_addr*:-segs_read_only_addr %*} \
 289    %{Zsegs_read_write_addr*:-segs_read_write_addr %*} \
 290    %{Zseg_addr_table*: -seg_addr_table %*} \
 291    %{Zseg_addr_table_filename*:-seg_addr_table_filename %*} \
 292    %{sub_library*} %{sub_umbrella*} \
 293    %{twolevel_namespace} %{twolevel_namespace_hints} \
 294    %{umbrella*} \
 295    %{undefined*} \
 296    %{Zunexported_symbols_list*:-unexported_symbols_list %*} \
 297    %{Zweak_reference_mismatches*:-weak_reference_mismatches %*} \
 298    %{!Zweak_reference_mismatches*:-weak_reference_mismatches non-weak} \
 299    %{X} \
 300    %{y*} \
 301    %{w} \
 302    %{pagezero_size*} %{segs_read_*} %{seglinkedit} %{noseglinkedit}  \
 303    %{sectalign*} %{sectobjectsymbols*} %{segcreate*} %{whyload} \
 304    %{whatsloaded} %{dylinker_install_name*} \
 305    %{dylinker} %{Mach} "
 306
 307
 308 /* Machine dependent libraries but do not redefine it if we already on 7.0 and
 309    above as it needs to link with libmx also.  */
 310
 311 #ifndef LIB_SPEC
 312 #define LIB_SPEC "%{!static:-lSystem}"
 313 #endif
 314
 315 /* -dynamiclib implies -shared-libgcc just like -shared would on linux.  */
 316 #define REAL_LIBGCC_SPEC \
 317    "%{static|static-libgcc:-lgcc -lgcc_eh}\
 318     %{!static:%{!static-libgcc:\
 319       %{!Zdynamiclib:%{!shared-libgcc:-lgcc  -lgcc_eh}\
 320       %{shared-libgcc:-lgcc_s -lgcc} } %{Zdynamiclib:-lgcc_s}}}"
 321
 322 /* We specify crt0.o as -lcrt0.o so that ld will search the library path.  */
 323
 324 #undef  STARTFILE_SPEC
 325 #define STARTFILE_SPEC  \
 326   "%{!Zdynamiclib:%{Zbundle:%{!static:-lbundle1.o}} \
 327      %{!Zbundle:%{pg:%{static:-lgcrt0.o} \
 328                      %{!static:%{object:-lgcrt0.o} \
 329                                %{!object:%{preload:-lgcrt0.o} \
 330                                  %{!preload:-lgcrt1.o crt2.o%s}}}} \
 331                 %{!pg:%{static:-lcrt0.o} \
 332                       %{!static:%{object:-lcrt0.o} \
 333                                 %{!object:%{preload:-lcrt0.o} \
 334                                   %{!preload:-lcrt1.o crt2.o%s}}}}}}"
 335
 336 /* The native Darwin linker doesn't necessarily place files in the order
 337    that they're specified on the link line.  Thus, it is pointless
 338    to put anything in ENDFILE_SPEC.  */
 339 /* #define ENDFILE_SPEC "" */
 340
 341 /* Default Darwin ASM_SPEC, very simple.  */
 342 #define ASM_SPEC "-arch %(darwin_arch) \
 343   %{Zforce_cpusubtype_ALL:-force_cpusubtype_ALL}"
 344
 345 /* We use Dbx symbol format.  */
 346
 347 #define DBX_DEBUGGING_INFO 1
 348
 349 /* Also enable Dwarf 2 as an option.  */
 350 #define DWARF2_DEBUGGING_INFO
 351 #define PREFERRED_DEBUGGING_TYPE DBX_DEBUG
 352
 353 #define DEBUG_FRAME_SECTION   "__DWARFA,__debug_frame,coalesced,no_toc+strip_static_syms"
 354 #define DEBUG_INFO_SECTION    "__DWARFA,__debug_info"
 355 #define DEBUG_ABBREV_SECTION  "__DWARFA,__debug_abbrev"
 356 #define DEBUG_ARANGES_SECTION "__DWARFA,__debug_aranges"
 357 #define DEBUG_MACINFO_SECTION "__DWARFA,__debug_macinfo"
 358 #define DEBUG_LINE_SECTION    "__DWARFA,__debug_line"
 359 #define DEBUG_LOC_SECTION     "__DWARFA,__debug_loc"
 360 #define DEBUG_PUBNAMES_SECTION        "__DWARFA,__debug_pubnames"
 361 #define DEBUG_STR_SECTION     "__DWARFA,__debug_str"
 362 #define DEBUG_RANGES_SECTION  "__DWARFA,__debug_ranges"
 363
 364 /* When generating stabs debugging, use N_BINCL entries.  */
 365
 366 #define DBX_USE_BINCL
 367
 368 /* There is no limit to the length of stabs strings.  */
 369
 370 #define DBX_CONTIN_LENGTH 0
 371
 372 /* gdb needs a null N_SO at the end of each file for scattered loading.  */
 373
 374 #define DBX_OUTPUT_NULL_N_SO_AT_MAIN_SOURCE_FILE_END
 375
 376 /* GCC's definition of 'one_only' is the same as its definition of 'weak'.  */
 377 #define MAKE_DECL_ONE_ONLY(DECL) (DECL_WEAK (DECL) = 1)
 378
 379 /* Mach-O supports 'weak imports', and 'weak definitions' in coalesced
 380    sections.  machopic_select_section ensures that weak variables go in
 381    coalesced sections.  Weak aliases (or any other kind of aliases) are
 382    not supported.  Weak symbols that aren't visible outside the .s file
 383    are not supported.  */
 384 #define ASM_WEAKEN_DECL(FILE, DECL, NAME, ALIAS)                        \
 385   do {                                                                  \
 386     if (ALIAS)                                                          \
 387       {                                                                 \
 388         warning ("alias definitions not supported in Mach-O; ignored"); \
 389         break;                                                          \
 390       }                                                                 \
 391                                                                         \
 392     if (! DECL_EXTERNAL (DECL) && TREE_PUBLIC (DECL))                   \
 393       targetm.asm_out.globalize_label (FILE, NAME);                     \
 394     if (DECL_EXTERNAL (DECL))                                           \
 395       fputs ("\t.weak_reference ", FILE);                               \
 396     else if (! lookup_attribute ("weak", DECL_ATTRIBUTES (DECL))        \
 397         && lookup_attribute ("weak_import", DECL_ATTRIBUTES (DECL)))    \
 398       break;                                                            \
 399     else if (TREE_PUBLIC (DECL))                                        \
 400       fputs ("\t.weak_definition ", FILE);                              \
 401     else                                                                \
 402       break;                                                            \
 403     assemble_name (FILE, NAME);                                         \
 404     fputc ('\n', FILE);                                                 \
 405   } while (0)
 406
 407 /* Darwin has the pthread routines in libSystem, which every program
 408    links to, so there's no need for weak-ness for that.  */
 409 #define GTHREAD_USE_WEAK 0
 410
 411 /* The Darwin linker imposes two limitations on common symbols: they
 412    can't have hidden visibility, and they can't appear in dylibs.  As
 413    a consequence, we should never use common symbols to represent
 414    vague linkage. */
 415 #undef USE_COMMON_FOR_ONE_ONLY
 416 #define USE_COMMON_FOR_ONE_ONLY 0
 417
 418 /* The Darwin linker doesn't want coalesced symbols to appear in
 419    a static archive's table of contents. */
 420 #undef TARGET_WEAK_NOT_IN_ARCHIVE_TOC
 421 #define TARGET_WEAK_NOT_IN_ARCHIVE_TOC 1
 422
 423 /* We make exception information linkonce. */
 424 #undef TARGET_USES_WEAK_UNWIND_INFO
 425 #define TARGET_USES_WEAK_UNWIND_INFO 1
 426
 427 /* We need to use a nonlocal label for the start of an EH frame: the
 428    Darwin linker requires that a coalesced section start with a label. */
 429 #undef FRAME_BEGIN_LABEL
 430 #define FRAME_BEGIN_LABEL "EH_frame"
 431
 432 /* Emit a label for the FDE corresponding to DECL.  EMPTY means
 433    emit a label for an empty FDE. */
 434 #define TARGET_ASM_EMIT_UNWIND_LABEL darwin_emit_unwind_label
 435
 436 /* Our profiling scheme doesn't LP labels and counter words.  */
 437
 438 #define NO_PROFILE_COUNTERS     1
 439
 440 #undef  INIT_SECTION_ASM_OP
 441 #define INIT_SECTION_ASM_OP
 442
 443 #undef  INVOKE__main
 444
 445 #define TARGET_ASM_CONSTRUCTOR  machopic_asm_out_constructor
 446 #define TARGET_ASM_DESTRUCTOR   machopic_asm_out_destructor
 447
 448 /* Always prefix with an underscore.  */
 449
 450 #define USER_LABEL_PREFIX "_"
 451
 452 /* Don't output a .file directive.  That is only used by the assembler for
 453    error reporting.  */
 454 #undef  TARGET_ASM_FILE_START_FILE_DIRECTIVE
 455 #define TARGET_ASM_FILE_START_FILE_DIRECTIVE false
 456
 457 #undef  TARGET_ASM_FILE_END
 458 #define TARGET_ASM_FILE_END darwin_file_end
 459
 460 #define ASM_OUTPUT_SKIP(FILE,SIZE)  \
 461   fprintf (FILE, "\t.space "HOST_WIDE_INT_PRINT_UNSIGNED"\n", SIZE)
 462
 463 /* Give ObjC methods pretty symbol names.  */
 464
 465 #undef  OBJC_GEN_METHOD_LABEL
 466 #define OBJC_GEN_METHOD_LABEL(BUF,IS_INST,CLASS_NAME,CAT_NAME,SEL_NAME,NUM) \
 467   do { if (CAT_NAME)                                                    \
 468          sprintf (BUF, "%c[%s(%s) %s]", (IS_INST) ? '-' : '+',          \
 469                   (CLASS_NAME), (CAT_NAME), (SEL_NAME));                \
 470        else                                                             \
 471          sprintf (BUF, "%c[%s %s]", (IS_INST) ? '-' : '+',              \
 472                   (CLASS_NAME), (SEL_NAME));                            \
 473      } while (0)
 474
 475 /* The RTTI data (e.g., __ti4name) is common and public (and static),
 476    but it does need to be referenced via indirect PIC data pointers.
 477    The machopic_define_symbol calls are telling the machopic subsystem
 478    that the name *is* defined in this module, so it doesn't need to
 479    make them indirect.  */
 480
 481 #undef ASM_DECLARE_OBJECT_NAME
 482 #define ASM_DECLARE_OBJECT_NAME(FILE, NAME, DECL)                       \
 483   do {                                                                  \
 484     const char *xname = NAME;                                           \
 485     if (GET_CODE (XEXP (DECL_RTL (DECL), 0)) != SYMBOL_REF)             \
 486       xname = IDENTIFIER_POINTER (DECL_NAME (DECL));                    \
 487     if (! DECL_WEAK (DECL)                                              \
 488         && ((TREE_STATIC (DECL)                                         \
 489              && (!DECL_COMMON (DECL) || !TREE_PUBLIC (DECL)))           \
 490             || DECL_INITIAL (DECL)))                                    \
 491         machopic_define_symbol (DECL_RTL (DECL));                       \
 492     if ((TREE_STATIC (DECL)                                             \
 493          && (!DECL_COMMON (DECL) || !TREE_PUBLIC (DECL)))               \
 494         || DECL_INITIAL (DECL))                                         \
 495       (* targetm.encode_section_info) (DECL, DECL_RTL (DECL), false);   \
 496     ASM_OUTPUT_LABEL (FILE, xname);                                     \
 497     /* Darwin doesn't support zero-size objects, so give them a         \
 498        byte.  */                                                        \
 499     if (tree_low_cst (DECL_SIZE_UNIT (DECL), 1) == 0)                   \
 500       assemble_zeros (1);                                               \
 501   } while (0)
 502
 503 #define ASM_DECLARE_FUNCTION_NAME(FILE, NAME, DECL)                     \
 504   do {                                                                  \
 505     const char *xname = NAME;                                           \
 506     if (GET_CODE (XEXP (DECL_RTL (DECL), 0)) != SYMBOL_REF)             \
 507       xname = IDENTIFIER_POINTER (DECL_NAME (DECL));                    \
 508     if (! DECL_WEAK (DECL)                                              \
 509         && ((TREE_STATIC (DECL)                                         \
 510              && (!DECL_COMMON (DECL) || !TREE_PUBLIC (DECL)))           \
 511             || DECL_INITIAL (DECL)))                                    \
 512         machopic_define_symbol (DECL_RTL (DECL));                       \
 513     if ((TREE_STATIC (DECL)                                             \
 514          && (!DECL_COMMON (DECL) || !TREE_PUBLIC (DECL)))               \
 515         || DECL_INITIAL (DECL))                                         \
 516       (* targetm.encode_section_info) (DECL, DECL_RTL (DECL), false);   \
 517     ASM_OUTPUT_LABEL (FILE, xname);                                     \
 518   } while (0)
 519
 520 #define ASM_DECLARE_CONSTANT_NAME(FILE, NAME, EXP, SIZE)        \
 521   do {                                                          \
 522     ASM_OUTPUT_LABEL (FILE, NAME);                              \
 523     /* Darwin doesn't support zero-size objects, so give them a \
 524        byte.  */                                                \
 525     if ((SIZE) == 0)                                            \
 526       assemble_zeros (1);                                       \
 527   } while (0)
 528
 529 /* Wrap new method names in quotes so the assembler doesn't gag.
 530    Make Objective-C internal symbols local.  */
 531
 532 #undef  ASM_OUTPUT_LABELREF
 533 #define ASM_OUTPUT_LABELREF(FILE,NAME)                                       \
 534   do {                                                                       \
 535        const char *xname = (NAME);                                           \
 536        if (! strcmp (xname, "<pic base>"))                                   \
 537          machopic_output_function_base_name(FILE);                           \
 538        else if (xname[0] == '&' || xname[0] == '*')                          \
 539          {                                                                   \
 540            int len = strlen (xname);                                         \
 541            if (len > 6 && !strcmp ("$stub", xname + len - 5))                \
 542              machopic_validate_stub_or_non_lazy_ptr (xname);                 \
 543            else if (len > 7 && !strcmp ("$stub\"", xname + len - 6))         \
 544              machopic_validate_stub_or_non_lazy_ptr (xname);                 \
 545            else if (len > 14 && !strcmp ("$non_lazy_ptr", xname + len - 13)) \
 546              machopic_validate_stub_or_non_lazy_ptr (xname);                 \
 547            fputs (&xname[1], FILE);                                          \
 548          }                                                                   \
 549        else if (xname[0] == '+' || xname[0] == '-')                          \
 550          fprintf (FILE, "\"%s\"", xname);                                    \
 551        else if (!strncmp (xname, "_OBJC_", 6))                               \
 552          fprintf (FILE, "L%s", xname);                                       \
 553        else if (!strncmp (xname, ".objc_class_name_", 17))                   \
 554          fprintf (FILE, "%s", xname);                                        \
 555        else                                                                  \
 556          asm_fprintf (FILE, "%U%s", xname);                                  \
 557   } while (0)
 558
 559 /* Output before executable code.  */
 560 #undef TEXT_SECTION_ASM_OP
 561 #define TEXT_SECTION_ASM_OP "\t.text"
 562
 563 /* Output before writable data.  */
 564
 565 #undef DATA_SECTION_ASM_OP
 566 #define DATA_SECTION_ASM_OP "\t.data"
 567
 568 #undef  ALIGN_ASM_OP
 569 #define ALIGN_ASM_OP            ".align"
 570
 571 #undef  ASM_OUTPUT_ALIGN
 572 #define ASM_OUTPUT_ALIGN(FILE,LOG)      \
 573   if ((LOG) != 0)                       \
 574     fprintf (FILE, "\t%s %d\n", ALIGN_ASM_OP, (LOG))
 575
 576 /* Ensure correct alignment of bss data.  */
 577
 578 #undef  ASM_OUTPUT_ALIGNED_DECL_LOCAL
 579 #define ASM_OUTPUT_ALIGNED_DECL_LOCAL(FILE, DECL, NAME, SIZE, ALIGN)    \
 580   do {                                                                  \
 581     fputs (".lcomm ", (FILE));                                          \
 582     assemble_name ((FILE), (NAME));                                     \
 583     fprintf ((FILE), ","HOST_WIDE_INT_PRINT_UNSIGNED",%u\n", (SIZE),    \
 584              floor_log2 ((ALIGN) / BITS_PER_UNIT));                     \
 585     if ((DECL) && ((TREE_STATIC (DECL)                                  \
 586          && (!DECL_COMMON (DECL) || !TREE_PUBLIC (DECL)))               \
 587         || DECL_INITIAL (DECL)))                                        \
 588       {                                                                 \
 589         (* targetm.encode_section_info) (DECL, DECL_RTL (DECL), false); \
 590         machopic_define_symbol (DECL_RTL (DECL));                       \
 591       }                                                                 \
 592   } while (0)
 593
 594 /* The maximum alignment which the object file format can support.
 595    For Mach-O, this is 2^15.  */
 596
 597 #undef  MAX_OFILE_ALIGNMENT
 598 #define MAX_OFILE_ALIGNMENT 0x8000
 599
 600 /* Create new Mach-O sections.  */
 601
 602 #undef  SECTION_FUNCTION
 603 #define SECTION_FUNCTION(FUNCTION, SECTION, DIRECTIVE, OBJC)            \
 604 extern void FUNCTION (void);                                            \
 605 void                                                                    \
 606 FUNCTION (void)                                                         \
 607 {                                                                       \
 608   if (in_section != SECTION)                                            \
 609     {                                                                   \
 610       if (OBJC)                                                         \
 611         objc_section_init ();                                           \
 612       if (asm_out_file)                                                 \
 613         fputs ("\t" DIRECTIVE "\n", asm_out_file);                      \
 614       in_section = SECTION;                                             \
 615     }                                                                   \
 616 }                                                                       \
 617
 618 /* Darwin uses many types of special sections.  */
 619
 620 #undef  EXTRA_SECTIONS
 621 #define EXTRA_SECTIONS                                                  \
 622   in_text_coal, in_text_unlikely, in_text_unlikely_coal,                \
 623   in_const, in_const_data, in_cstring, in_literal4, in_literal8,        \
 624   in_const_coal, in_const_data_coal, in_data_coal,                      \
 625   in_constructor, in_destructor, in_mod_init, in_mod_term,              \
 626   in_objc_class, in_objc_meta_class, in_objc_category,                  \
 627   in_objc_class_vars, in_objc_instance_vars,                            \
 628   in_objc_cls_meth, in_objc_inst_meth,                                  \
 629   in_objc_cat_cls_meth, in_objc_cat_inst_meth,                          \
 630   in_objc_selector_refs,                                                \
 631   in_objc_selector_fixup,                                               \
 632   in_objc_symbols, in_objc_module_info,                                 \
 633   in_objc_protocol, in_objc_string_object,                              \
 634   in_objc_constant_string_object,                                       \
 635   in_objc_image_info,                                                   \
 636   in_objc_class_names, in_objc_meth_var_names,                          \
 637   in_objc_meth_var_types, in_objc_cls_refs,                             \
 638   in_machopic_nl_symbol_ptr,                                            \
 639   in_machopic_lazy_symbol_ptr,                                          \
 640   in_machopic_symbol_stub,                                              \
 641   in_machopic_symbol_stub1,                                             \
 642   in_machopic_picsymbol_stub,                                           \
 643   in_machopic_picsymbol_stub1,                                          \
 644   in_darwin_exception, in_darwin_eh_frame,                              \
 645   num_sections
 646
 647 #undef  EXTRA_SECTION_FUNCTIONS
 648 #define EXTRA_SECTION_FUNCTIONS                                 \
 649 static void objc_section_init (void);                           \
 650 SECTION_FUNCTION (text_coal_section,                            \
 651                   in_text_coal,                                 \
 652                   ".section __TEXT,__textcoal_nt,coalesced,"    \
 653                     "pure_instructions", 0)                     \
 654 SECTION_FUNCTION (text_unlikely_section,                        \
 655                   in_text_unlikely,                             \
 656                   ".section __TEXT,__text_unlikely,coalesced,"  \
 657                     "pure_instructions", 0)                     \
 658 SECTION_FUNCTION (text_unlikely_coal_section,                   \
 659                   in_text_unlikely_coal,                        \
 660                   ".section __TEXT,__text_unlikely_coal,"       \
 661                     "coalesced,pure_instructions", 0)           \
 662 SECTION_FUNCTION (const_section,                                \
 663                   in_const,                                     \
 664                   ".const", 0)                                  \
 665 SECTION_FUNCTION (const_coal_section,                           \
 666                   in_const_coal,                                \
 667                   ".section __TEXT,__const_coal,coalesced", 0)  \
 668 SECTION_FUNCTION (const_data_section,                           \
 669                   in_const_data,                                \
 670                   ".const_data", 0)                             \
 671 SECTION_FUNCTION (const_data_coal_section,                      \
 672                   in_const_data_coal,                           \
 673                   ".section __DATA,__const_coal,coalesced", 0)  \
 674 SECTION_FUNCTION (data_coal_section,                            \
 675                   in_data_coal,                                 \
 676                   ".section __DATA,__datacoal_nt,coalesced", 0) \
 677 SECTION_FUNCTION (cstring_section,                              \
 678                   in_cstring,                                   \
 679                   ".cstring", 0)                                \
 680 SECTION_FUNCTION (literal4_section,                             \
 681                   in_literal4,                                  \
 682                   ".literal4", 0)                               \
 683 SECTION_FUNCTION (literal8_section,                             \
 684                   in_literal8,                                  \
 685                   ".literal8", 0)                               \
 686 SECTION_FUNCTION (constructor_section,                          \
 687                   in_constructor,                               \
 688                   ".constructor", 0)                            \
 689 SECTION_FUNCTION (mod_init_section,                             \
 690                   in_mod_init,                                  \
 691                   ".mod_init_func", 0)                          \
 692 SECTION_FUNCTION (mod_term_section,                             \
 693                   in_mod_term,                                  \
 694                   ".mod_term_func", 0)                          \
 695 SECTION_FUNCTION (destructor_section,                           \
 696                   in_destructor,                                \
 697                   ".destructor", 0)                             \
 698 SECTION_FUNCTION (objc_class_section,                           \
 699                   in_objc_class,                                \
 700                   ".objc_class", 1)                             \
 701 SECTION_FUNCTION (objc_meta_class_section,                      \
 702                   in_objc_meta_class,                           \
 703                   ".objc_meta_class", 1)                        \
 704 SECTION_FUNCTION (objc_category_section,                        \
 705                   in_objc_category,                             \
 706                 ".objc_category", 1)                            \
 707 SECTION_FUNCTION (objc_class_vars_section,                      \
 708                   in_objc_class_vars,                           \
 709                   ".objc_class_vars", 1)                        \
 710 SECTION_FUNCTION (objc_instance_vars_section,                   \
 711                   in_objc_instance_vars,                        \
 712                   ".objc_instance_vars", 1)                     \
 713 SECTION_FUNCTION (objc_cls_meth_section,                        \
 714                   in_objc_cls_meth,                             \
 715                   ".objc_cls_meth", 1)                          \
 716 SECTION_FUNCTION (objc_inst_meth_section,                       \
 717                   in_objc_inst_meth,                            \
 718                   ".objc_inst_meth", 1)                         \
 719 SECTION_FUNCTION (objc_cat_cls_meth_section,                    \
 720                   in_objc_cat_cls_meth,                         \
 721                   ".objc_cat_cls_meth", 1)                      \
 722 SECTION_FUNCTION (objc_cat_inst_meth_section,                   \
 723                   in_objc_cat_inst_meth,                        \
 724                   ".objc_cat_inst_meth", 1)                     \
 725 SECTION_FUNCTION (objc_selector_refs_section,                   \
 726                   in_objc_selector_refs,                        \
 727                   ".objc_message_refs", 1)                      \
 728 SECTION_FUNCTION (objc_selector_fixup_section,                               \
 729                   in_objc_selector_fixup,                                    \
 730                   ".section __OBJC, __sel_fixup, regular, no_dead_strip", 1) \
 731 SECTION_FUNCTION (objc_symbols_section,                                 \
 732                   in_objc_symbols,                                      \
 733                   ".objc_symbols", 1)                                   \
 734 SECTION_FUNCTION (objc_module_info_section,                             \
 735                   in_objc_module_info,                                  \
 736                   ".objc_module_info", 1)                               \
 737 SECTION_FUNCTION (objc_protocol_section,                                \
 738                   in_objc_protocol,                                     \
 739                   ".objc_protocol", 1)                                  \
 740 SECTION_FUNCTION (objc_string_object_section,                           \
 741                   in_objc_string_object,                                \
 742                   ".objc_string_object", 1)                             \
 743 SECTION_FUNCTION (objc_constant_string_object_section,                  \
 744                   in_objc_constant_string_object,                       \
 745                   ".section __OBJC, __cstring_object, regular, "        \
 746                     "no_dead_strip", 1)                                 \
 747 /* Fix-and-Continue image marker.  */                                   \
 748 SECTION_FUNCTION (objc_image_info_section,                              \
 749                   in_objc_image_info,                                   \
 750                   ".section __OBJC, __image_info, regular, "            \
 751                     "no_dead_strip", 1)                                 \
 752 SECTION_FUNCTION (objc_class_names_section,                             \
 753                 in_objc_class_names,                                    \
 754                 ".objc_class_names", 1)                                 \
 755 SECTION_FUNCTION (objc_meth_var_names_section,                          \
 756                 in_objc_meth_var_names,                                 \
 757                 ".objc_meth_var_names", 1)                              \
 758 SECTION_FUNCTION (objc_meth_var_types_section,                          \
 759                 in_objc_meth_var_types,                                 \
 760                 ".objc_meth_var_types", 1)                              \
 761 SECTION_FUNCTION (objc_cls_refs_section,                                \
 762                 in_objc_cls_refs,                                       \
 763                 ".objc_cls_refs", 1)                                    \
 764 \
 765 SECTION_FUNCTION (machopic_lazy_symbol_ptr_section,                     \
 766                 in_machopic_lazy_symbol_ptr,                            \
 767                 ".lazy_symbol_pointer", 0)                              \
 768 SECTION_FUNCTION (machopic_nl_symbol_ptr_section,                       \
 769                 in_machopic_nl_symbol_ptr,                              \
 770                 ".non_lazy_symbol_pointer", 0)                          \
 771 SECTION_FUNCTION (machopic_symbol_stub_section,                         \
 772                 in_machopic_symbol_stub,                                \
 773                 ".symbol_stub", 0)                                      \
 774 SECTION_FUNCTION (machopic_symbol_stub1_section,                        \
 775                 in_machopic_symbol_stub1,                               \
 776                 ".section __TEXT,__symbol_stub1,symbol_stubs,"          \
 777                   "pure_instructions,16", 0)                            \
 778 SECTION_FUNCTION (machopic_picsymbol_stub_section,                      \
 779                 in_machopic_picsymbol_stub,                             \
 780                 ".picsymbol_stub", 0)                                   \
 781 SECTION_FUNCTION (machopic_picsymbol_stub1_section,                     \
 782                 in_machopic_picsymbol_stub1,                            \
 783                 ".section __TEXT,__picsymbolstub1,symbol_stubs,"        \
 784                   "pure_instructions,32", 0)                            \
 785 SECTION_FUNCTION (darwin_exception_section,                             \
 786                 in_darwin_exception,                                    \
 787                 ".section __DATA,__gcc_except_tab", 0)                  \
 788 SECTION_FUNCTION (darwin_eh_frame_section,                              \
 789                 in_darwin_eh_frame,                                     \
 790                 ".section " EH_FRAME_SECTION_NAME ",__eh_frame"         \
 791                   EH_FRAME_SECTION_ATTR, 0)                             \
 792 \
 793 static void                                     \
 794 objc_section_init (void)                        \
 795 {                                               \
 796   static int been_here = 0;                     \
 797                                                 \
 798   if (been_here == 0)                           \
 799     {                                           \
 800       been_here = 1;                            \
 801           /* written, cold -> hot */            \
 802       objc_cat_cls_meth_section ();             \
 803       objc_cat_inst_meth_section ();            \
 804       objc_string_object_section ();            \
 805       objc_constant_string_object_section ();   \
 806       objc_selector_refs_section ();            \
 807       objc_selector_fixup_section ();           \
 808       objc_cls_refs_section ();                 \
 809       objc_class_section ();                    \
 810       objc_meta_class_section ();               \
 811           /* shared, hot -> cold */             \
 812       objc_cls_meth_section ();                 \
 813       objc_inst_meth_section ();                \
 814       objc_protocol_section ();                 \
 815       objc_class_names_section ();              \
 816       objc_meth_var_types_section ();           \
 817       objc_meth_var_names_section ();           \
 818       objc_category_section ();                 \
 819       objc_class_vars_section ();               \
 820       objc_instance_vars_section ();            \
 821       objc_module_info_section ();              \
 822       objc_symbols_section ();                  \
 823     }                                           \
 824 }
 825
 826 #define READONLY_DATA_SECTION const_section
 827
 828 #undef  TARGET_ASM_SELECT_SECTION
 829 #define TARGET_ASM_SELECT_SECTION machopic_select_section
 830 #define USE_SELECT_SECTION_FOR_FUNCTIONS
 831
 832 #undef  TARGET_ASM_SELECT_RTX_SECTION
 833 #define TARGET_ASM_SELECT_RTX_SECTION machopic_select_rtx_section
 834 #undef  TARGET_ASM_UNIQUE_SECTION
 835 #define TARGET_ASM_UNIQUE_SECTION darwin_unique_section
 836 #undef  TARGET_ASM_FUNCTION_RODATA_SECTION
 837 #define TARGET_ASM_FUNCTION_RODATA_SECTION default_no_function_rodata_section
 838
 839
 840 #define ASM_DECLARE_UNRESOLVED_REFERENCE(FILE,NAME)                     \
 841     do {                                                                \
 842          if (FILE) {                                                    \
 843            if (MACHOPIC_INDIRECT)                                       \
 844              fprintf (FILE, "\t.lazy_reference ");                      \
 845            else                                                         \
 846              fprintf (FILE, "\t.reference ");                           \
 847            assemble_name (FILE, NAME);                                  \
 848            fprintf (FILE, "\n");                                        \
 849          }                                                              \
 850        } while (0)
 851
 852 #define ASM_DECLARE_CLASS_REFERENCE(FILE,NAME)                          \
 853     do {                                                                \
 854          if (FILE) {                                                    \
 855            fprintf (FILE, "\t");                                        \
 856            assemble_name (FILE, NAME);                                  \
 857            fprintf (FILE, "=0\n");                                      \
 858            (*targetm.asm_out.globalize_label) (FILE, NAME);             \
 859          }                                                              \
 860        } while (0)
 861
 862 /* Globalizing directive for a label.  */
 863 #define GLOBAL_ASM_OP ".globl "
 864 #define TARGET_ASM_GLOBALIZE_LABEL darwin_globalize_label
 865
 866 /* Emit an assembler directive to set visibility for a symbol.  Used
 867    to support visibility attribute and Darwin's private extern
 868    feature.  */
 869 #undef TARGET_ASM_ASSEMBLE_VISIBILITY
 870 #define TARGET_ASM_ASSEMBLE_VISIBILITY darwin_assemble_visibility
 871
 872 /* Extra attributes for Darwin.  */
 873 #define SUBTARGET_ATTRIBUTE_TABLE                                            \
 874   /* { name, min_len, max_len, decl_req, type_req, fn_type_req, handler } */ \
 875   { "weak_import", 0, 0, true, false, false,                                 \
 876     darwin_handle_weak_import_attribute }
 877
 878 #undef ASM_GENERATE_INTERNAL_LABEL
 879 #define ASM_GENERATE_INTERNAL_LABEL(LABEL,PREFIX,NUM)   \
 880   sprintf (LABEL, "*%s%ld", PREFIX, (long)(NUM))
 881
 882 #undef TARGET_ASM_MARK_DECL_PRESERVED
 883 #define TARGET_ASM_MARK_DECL_PRESERVED darwin_mark_decl_preserved
 884
 885 /* Set on a symbol with SYMBOL_FLAG_FUNCTION or
 886    MACHO_SYMBOL_FLAG_VARIABLE to indicate that the function or
 887    variable has been defined in this translation unit.  */
 888
 889 #define MACHO_SYMBOL_FLAG_VARIABLE (SYMBOL_FLAG_MACH_DEP)
 890 #define MACHO_SYMBOL_FLAG_DEFINED ((SYMBOL_FLAG_MACH_DEP) << 1)
 891
 892 /* Set on a symbol to indicate when fix-and-continue style code
 893    generation is being used and the symbol refers to a static symbol
 894    that should be rebound from new instances of a translation unit to
 895    the original instance of the data.  */
 896
 897 #define MACHO_SYMBOL_STATIC ((SYMBOL_FLAG_MACH_DEP) << 2)
 898
 899 /* Symbolic names for various things we might know about a symbol.  */
 900
 901 enum machopic_addr_class {
 902   MACHOPIC_UNDEFINED,
 903   MACHOPIC_DEFINED_DATA,
 904   MACHOPIC_UNDEFINED_DATA,
 905   MACHOPIC_DEFINED_FUNCTION,
 906   MACHOPIC_UNDEFINED_FUNCTION
 907 };
 908
 909 /* Macros defining the various PIC cases.  */
 910
 911 #define MACHO_DYNAMIC_NO_PIC_P  (TARGET_DYNAMIC_NO_PIC)
 912 #define MACHOPIC_INDIRECT       (flag_pic || MACHO_DYNAMIC_NO_PIC_P)
 913 #define MACHOPIC_JUST_INDIRECT  (flag_pic == 1 || MACHO_DYNAMIC_NO_PIC_P)
 914 #define MACHOPIC_PURE           (flag_pic == 2 && ! MACHO_DYNAMIC_NO_PIC_P)
 915
 916 #undef TARGET_ENCODE_SECTION_INFO
 917 #define TARGET_ENCODE_SECTION_INFO  darwin_encode_section_info
 918 #undef TARGET_STRIP_NAME_ENCODING
 919 #define TARGET_STRIP_NAME_ENCODING  default_strip_name_encoding
 920
 921 #define GEN_BINDER_NAME_FOR_STUB(BUF,STUB,STUB_LENGTH)          \
 922   do {                                                          \
 923     const char *const stub_ = (STUB);                           \
 924     char *buffer_ = (BUF);                                      \
 925     strcpy (buffer_, stub_);                                    \
 926     if (stub_[0] == '"')                                        \
 927       {                                                         \
 928         strcpy (buffer_ + (STUB_LENGTH) - 1, "_binder\"");      \
 929       }                                                         \
 930     else                                                        \
 931       {                                                         \
 932         strcpy (buffer_ + (STUB_LENGTH), "_binder");            \
 933       }                                                         \
 934   } while (0)
 935
 936 #define GEN_SYMBOL_NAME_FOR_SYMBOL(BUF,SYMBOL,SYMBOL_LENGTH)    \
 937   do {                                                          \
 938     const char *const symbol_ = (SYMBOL);                       \
 939     char *buffer_ = (BUF);                                      \
 940     if (name_needs_quotes (symbol_) && symbol_[0] != '"')       \
 941       {                                                         \
 942           sprintf (buffer_, "\"%s\"", symbol_);                 \
 943       }                                                         \
 944     else                                                        \
 945       {                                                         \
 946         strcpy (buffer_, symbol_);                              \
 947       }                                                         \
 948   } while (0)
 949
 950 /* Given a symbol name string, create the lazy pointer version
 951    of the symbol name.  */
 952
 953 #define GEN_LAZY_PTR_NAME_FOR_SYMBOL(BUF,SYMBOL,SYMBOL_LENGTH)  \
 954   do {                                                          \
 955     const char *symbol_ = (SYMBOL);                             \
 956     char *buffer_ = (BUF);                                      \
 957     if (symbol_[0] == '"')                                      \
 958       {                                                         \
 959         strcpy (buffer_, "\"L");                                \
 960         strcpy (buffer_ + 2, symbol_ + 1);                      \
 961         strcpy (buffer_ + (SYMBOL_LENGTH), "$lazy_ptr\"");      \
 962       }                                                         \
 963     else if (name_needs_quotes (symbol_))                       \
 964       {                                                         \
 965         strcpy (buffer_, "\"L");                                \
 966         strcpy (buffer_ + 2, symbol_);                          \
 967         strcpy (buffer_ + (SYMBOL_LENGTH) + 2, "$lazy_ptr\"");  \
 968       }                                                         \
 969     else                                                        \
 970       {                                                         \
 971         strcpy (buffer_, "L");                                  \
 972         strcpy (buffer_ + 1, symbol_);                          \
 973         strcpy (buffer_ + (SYMBOL_LENGTH) + 1, "$lazy_ptr");    \
 974       }                                                         \
 975   } while (0)
 976
 977 #define TARGET_ASM_EXCEPTION_SECTION darwin_exception_section
 978
 979 #define TARGET_ASM_EH_FRAME_SECTION darwin_eh_frame_section
 980
 981 #define EH_FRAME_SECTION_NAME   "__TEXT"
 982 #define EH_FRAME_SECTION_ATTR ",coalesced,no_toc+strip_static_syms+live_support"
 983
 984 /* Java runtime class list.  */
 985 #define JCR_SECTION_NAME "__DATA,jcr,regular,no_dead_strip"
 986
 987 #undef ASM_PREFERRED_EH_DATA_FORMAT
 988 #define ASM_PREFERRED_EH_DATA_FORMAT(CODE,GLOBAL)  \
 989   (((CODE) == 2 && (GLOBAL) == 1) \
 990    ? (DW_EH_PE_pcrel | DW_EH_PE_indirect) : \
 991      ((CODE) == 1 || (GLOBAL) == 0) ? DW_EH_PE_pcrel : DW_EH_PE_absptr)
 992
 993 #define ASM_OUTPUT_DWARF_DELTA(FILE,SIZE,LABEL1,LABEL2)  \
 994   darwin_asm_output_dwarf_delta (FILE, SIZE, LABEL1, LABEL2)
 995
 996 #define ASM_MAYBE_OUTPUT_ENCODED_ADDR_RTX(ASM_OUT_FILE, ENCODING, SIZE, ADDR, DONE)     \
 997       if (ENCODING == ASM_PREFERRED_EH_DATA_FORMAT (2, 1)) {                            \
 998         darwin_non_lazy_pcrel (ASM_OUT_FILE, ADDR);                                     \
 999         goto DONE;                                                                      \
1000       }
1001
1002 /* Experimentally, putting jump tables in text is faster on SPEC.
1003    Also this is needed for correctness for coalesced functions.  */
1004
1005 #ifndef JUMP_TABLES_IN_TEXT_SECTION
1006 #define JUMP_TABLES_IN_TEXT_SECTION 1
1007 #endif
1008
1009 #define TARGET_TERMINATE_DW2_EH_FRAME_INFO false
1010
1011 #undef TARGET_ASM_NAMED_SECTION
1012 #define TARGET_ASM_NAMED_SECTION darwin_asm_named_section
1013
1014 #define DARWIN_REGISTER_TARGET_PRAGMAS()                        \
1015   do {                                                          \
1016     c_register_pragma (0, "mark", darwin_pragma_ignore);        \
1017     c_register_pragma (0, "options", darwin_pragma_options);    \
1018     c_register_pragma (0, "segment", darwin_pragma_ignore);     \
1019     c_register_pragma (0, "unused", darwin_pragma_unused);      \
1020   } while (0)
1021
1022 #undef ASM_APP_ON
1023 #define ASM_APP_ON ""
1024 #undef ASM_APP_OFF
1025 #define ASM_APP_OFF ""
1026
1027 void darwin_register_frameworks (const char *, const char *, int);
1028 void darwin_register_objc_includes (const char *, const char *, int);
1029 #define TARGET_EXTRA_PRE_INCLUDES darwin_register_objc_includes
1030 #define TARGET_EXTRA_INCLUDES darwin_register_frameworks
1031
1032 void add_framework_path (char *);
1033 #define TARGET_OPTF add_framework_path
1034
1035 #define TARGET_HAS_F_SETLKW
1036
1037 /* Darwin before 7.0 does not have C99 functions.   */
1038 #ifndef TARGET_C99_FUNCTIONS
1039 #define TARGET_C99_FUNCTIONS 0
1040 #endif
1041
1042 #define WINT_TYPE "int"
1043
1044 #endif /* CONFIG_DARWIN_H */