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 /* True if pragma ms_struct is in effect. */ 84 extern GTY(()) int darwin_ms_struct; 85 86 /* This table intercepts weirdo options whose names would interfere 87 with normal driver conventions, and either translates them into 88 standardly-named options, or adds a 'Z' so that they can get to 89 specs processing without interference. 90 91 Do not expand a linker option to "-Xlinker -<option>", since that 92 forfeits the ability to control via spec strings later. However, 93 as a special exception, do this translation with -filelist, because 94 otherwise the driver will think there are no input files and quit. 95 (The alternative would be to hack the driver to recognize -filelist 96 specially, but it's simpler to use the translation table.) 97 98 Note that an option name with a prefix that matches another option 99 name, that also takes an argument, needs to be modified so the 100 prefix is different, otherwise a '*' after the shorter option will 101 match with the longer one. 102 103 The SUBTARGET_OPTION_TRANSLATE_TABLE macro, which _must_ be defined 104 in gcc/config/{i386,rs6000}/darwin.h, should contain any additional 105 command-line option translations specific to the particular target 106 architecture. */ 107 108 #define TARGET_OPTION_TRANSLATE_TABLE \ 109 { "-all_load", "-Zall_load" }, \ 110 { "-allowable_client", "-Zallowable_client" }, \ 111 { "-arch_errors_fatal", "-Zarch_errors_fatal" }, \ 112 { "-bind_at_load", "-Zbind_at_load" }, \ 113 { "-bundle", "-Zbundle" }, \ 114 { "-bundle_loader", "-Zbundle_loader" }, \ 115 { "-weak_reference_mismatches", "-Zweak_reference_mismatches" }, \ 116 { "-dead_strip", "-Zdead_strip" }, \ 117 { "-no_dead_strip_inits_and_terms", "-Zno_dead_strip_inits_and_terms" }, \ 118 { "-dependency-file", "-MF" }, \ 119 { "-dylib_file", "-Zdylib_file" }, \ 120 { "-dynamic", "-Zdynamic" }, \ 121 { "-dynamiclib", "-Zdynamiclib" }, \ 122 { "-exported_symbols_list", "-Zexported_symbols_list" }, \ 123 { "-gfull", "-g -fno-eliminate-unused-debug-symbols" }, \ 124 { "-gused", "-g -feliminate-unused-debug-symbols" }, \ 125 { "-segaddr", "-Zsegaddr" }, \ 126 { "-segs_read_only_addr", "-Zsegs_read_only_addr" }, \ 127 { "-segs_read_write_addr", "-Zsegs_read_write_addr" }, \ 128 { "-seg_addr_table", "-Zseg_addr_table" }, \ 129 { "-seg_addr_table_filename", "-Zfn_seg_addr_table_filename" }, \ 130 { "-fapple-kext", "-fapple-kext -static -Wa,-static" }, \ 131 { "-filelist", "-Xlinker -filelist -Xlinker" }, \ 132 { "-findirect-virtual-calls", "-fapple-kext" }, \ 133 { "-flat_namespace", "-Zflat_namespace" }, \ 134 { "-force_cpusubtype_ALL", "-Zforce_cpusubtype_ALL" }, \ 135 { "-force_flat_namespace", "-Zforce_flat_namespace" }, \ 136 { "-framework", "-Xlinker -framework -Xlinker" }, \ 137 { "-fterminated-vtables", "-fapple-kext" }, \ 138 { "-image_base", "-Zimage_base" }, \ 139 { "-init", "-Zinit" }, \ 140 { "-install_name", "-Zinstall_name" }, \ 141 { "-mkernel", "-mkernel -static -Wa,-static" }, \ 142 { "-multiply_defined_unused", "-Zmultiplydefinedunused" }, \ 143 { "-multiply_defined", "-Zmultiply_defined" }, \ 144 { "-multi_module", "-Zmulti_module" }, \ 145 { "-static", "-static -Wa,-static" }, \ 146 { "-single_module", "-Zsingle_module" }, \ 147 { "-unexported_symbols_list", "-Zunexported_symbols_list" }, \ 148 SUBTARGET_OPTION_TRANSLATE_TABLE 149 150 #define SUBSUBTARGET_OVERRIDE_OPTIONS \ 151 do { \ 152 darwin_override_options (); \ 153 } while (0) 154 155 /* These compiler options take n arguments. */ 156 157 #undef WORD_SWITCH_TAKES_ARG 158 #define WORD_SWITCH_TAKES_ARG(STR) \ 159 (DEFAULT_WORD_SWITCH_TAKES_ARG (STR) ? 1 : \ 160 !strcmp (STR, "Zallowable_client") ? 1 : \ 161 !strcmp (STR, "arch") ? 1 : \ 162 !strcmp (STR, "arch_only") ? 1 : \ 163 !strcmp (STR, "Zbundle_loader") ? 1 : \ 164 !strcmp (STR, "client_name") ? 1 : \ 165 !strcmp (STR, "compatibility_version") ? 1 : \ 166 !strcmp (STR, "current_version") ? 1 : \ 167 !strcmp (STR, "Zdylib_file") ? 1 : \ 168 !strcmp (STR, "Zexported_symbols_list") ? 1 : \ 169 !strcmp (STR, "Zimage_base") ? 1 : \ 170 !strcmp (STR, "Zinit") ? 1 : \ 171 !strcmp (STR, "Zinstall_name") ? 1 : \ 172 !strcmp (STR, "Zmultiplydefinedunused") ? 1 : \ 173 !strcmp (STR, "Zmultiply_defined") ? 1 : \ 174 !strcmp (STR, "precomp-trustfile") ? 1 : \ 175 !strcmp (STR, "read_only_relocs") ? 1 : \ 176 !strcmp (STR, "sectcreate") ? 3 : \ 177 !strcmp (STR, "sectorder") ? 3 : \ 178 !strcmp (STR, "Zsegaddr") ? 2 : \ 179 !strcmp (STR, "Zsegs_read_only_addr") ? 1 : \ 180 !strcmp (STR, "Zsegs_read_write_addr") ? 1 : \ 181 !strcmp (STR, "Zseg_addr_table") ? 1 : \ 182 !strcmp (STR, "Zfn_seg_addr_table_filename") ? 1 :\ 183 !strcmp (STR, "seg1addr") ? 1 : \ 184 !strcmp (STR, "segprot") ? 3 : \ 185 !strcmp (STR, "sub_library") ? 1 : \ 186 !strcmp (STR, "sub_umbrella") ? 1 : \ 187 !strcmp (STR, "umbrella") ? 1 : \ 188 !strcmp (STR, "undefined") ? 1 : \ 189 !strcmp (STR, "Zunexported_symbols_list") ? 1 : \ 190 !strcmp (STR, "Zweak_reference_mismatches") ? 1 : \ 191 !strcmp (STR, "pagezero_size") ? 1 : \ 192 !strcmp (STR, "segs_read_only_addr") ? 1 : \ 193 !strcmp (STR, "segs_read_write_addr") ? 1 : \ 194 !strcmp (STR, "sectalign") ? 3 : \ 195 !strcmp (STR, "sectobjectsymbols") ? 2 : \ 196 !strcmp (STR, "segcreate") ? 3 : \ 197 !strcmp (STR, "dylinker_install_name") ? 1 : \ 198 0) 199 200 #define SUBTARGET_C_COMMON_OVERRIDE_OPTIONS do { \ 201 if (flag_mkernel || flag_apple_kext) \ 202 { \ 203 if (flag_use_cxa_atexit == 2) \ 204 flag_use_cxa_atexit = 0; \ 205 /* kexts should always be built without the coalesced sections \ 206 because the kernel loader doesn't grok such sections. */ \ 207 flag_weak = 0; \ 208 /* No RTTI in kexts. */ \ 209 flag_rtti = 0; \ 210 } \ 211 } while (0) 212 213 /* Machine dependent cpp options. Don't add more options here, add 214 them to darwin_cpp_builtins in darwin-c.c. */ 215 216 #undef CPP_SPEC 217 #define CPP_SPEC "%{static:%{!dynamic:-D__STATIC__}}%{!static:-D__DYNAMIC__}" \ 218 " %{pthread:-D_REENTRANT}" 219 220 /* This is mostly a clone of the standard LINK_COMMAND_SPEC, plus 221 precomp, libtool, and fat build additions. Also we 222 don't specify a second %G after %L because libSystem is 223 self-contained and doesn't need to link against libgcc.a. */ 224 /* In general, random Darwin linker flags should go into LINK_SPEC 225 instead of LINK_COMMAND_SPEC. The command spec is better for 226 specifying the handling of options understood by generic Unix 227 linkers, and for positional arguments like libraries. */ 228 #define LINK_COMMAND_SPEC "\ 229 %{!fdump=*:%{!fsyntax-only:%{!precomp:%{!c:%{!M:%{!MM:%{!E:%{!S:\ 230 %{!Zdynamiclib:%(linker)}%{Zdynamiclib:/usr/bin/libtool} \ 231 %l %X %{d} %{s} %{t} %{Z} \ 232 %{!Zdynamiclib:%{A} %{e*} %{m} %{N} %{n} %{r} %{u*} %{x} %{z}} \ 233 %{@:-o %f%u.out}%{!@:%{o*}%{!o:-o a.out}} \ 234 %{!A:%{!nostdlib:%{!nostartfiles:%S}}} \ 235 %{L*} %{fopenmp:%:include(libgomp.spec)%(link_gomp)} \ 236 %(link_libgcc) %o %{fprofile-arcs|fprofile-generate|coverage:-lgcov} \ 237 %{!nostdlib:%{!nodefaultlibs:%(link_ssp) %G %L}} \ 238 %{!A:%{!nostdlib:%{!nostartfiles:%E}}} %{T*} %{F*} }}}}}}}}" 239 240 #ifdef TARGET_SYSTEM_ROOT 241 #define LINK_SYSROOT_SPEC \ 242 "%{isysroot*:-syslibroot %*;:-syslibroot " TARGET_SYSTEM_ROOT "}" 243 #else 244 #define LINK_SYSROOT_SPEC "%{isysroot*:-syslibroot %*}" 245 #endif 246 247 /* Please keep the random linker options in alphabetical order (modulo 248 'Z' and 'no' prefixes). Options that can only go to one of libtool 249 or ld must be listed twice, under both !Zdynamiclib and 250 Zdynamiclib, with one of the cases reporting an error. */ 251 /* Note that options taking arguments may appear multiple times on a 252 command line with different arguments each time, so put a * after 253 their names so all of them get passed. */ 254 #define LINK_SPEC \ 255 "%{static}%{!static:-dynamic} \ 256 %{fgnu-runtime:%:replace-outfile(-lobjc -lobjc-gnu)}\ 257 %{!Zdynamiclib: \ 258 %{Zforce_cpusubtype_ALL:-arch %(darwin_arch) -force_cpusubtype_ALL} \ 259 %{!Zforce_cpusubtype_ALL:-arch %(darwin_subarch)} \ 260 %{Zbundle:-bundle} \ 261 %{Zbundle_loader*:-bundle_loader %*} \ 262 %{client_name*} \ 263 %{compatibility_version*:%e-compatibility_version only allowed with -dynamiclib\ 264 } \ 265 %{current_version*:%e-current_version only allowed with -dynamiclib} \ 266 %{Zforce_flat_namespace:-force_flat_namespace} \ 267 %{Zinstall_name*:%e-install_name only allowed with -dynamiclib} \ 268 %{keep_private_externs} \ 269 %{private_bundle} \ 270 } \ 271 %{Zdynamiclib: \ 272 %{Zbundle:%e-bundle not allowed with -dynamiclib} \ 273 %{Zbundle_loader*:%e-bundle_loader not allowed with -dynamiclib} \ 274 %{client_name*:%e-client_name not allowed with -dynamiclib} \ 275 %{compatibility_version*} \ 276 %{current_version*} \ 277 %{Zforce_cpusubtype_ALL:-arch_only %(darwin_arch)} \ 278 %{!Zforce_cpusubtype_ALL: -arch_only %(darwin_subarch)} \ 279 %{Zforce_flat_namespace:%e-force_flat_namespace not allowed with -dynamiclib} \ 280 %{Zinstall_name*:-install_name %*} \ 281 %{keep_private_externs:%e-keep_private_externs not allowed with -dynamiclib} \ 282 %{private_bundle:%e-private_bundle not allowed with -dynamiclib} \ 283 } \ 284 %{Zall_load:-all_load}%{Zdynamiclib:%{!Zall_load:-noall_load}} \ 285 %{Zallowable_client*:-allowable_client %*} \ 286 %{Zbind_at_load:-bind_at_load} \ 287 %{Zarch_errors_fatal:-arch_errors_fatal} \ 288 %{Zdead_strip:-dead_strip} \ 289 %{Zno_dead_strip_inits_and_terms:-no_dead_strip_inits_and_terms} \ 290 %{Zdylib_file*:-dylib_file %*} \ 291 %{Zdynamic:-dynamic}\ 292 %{Zexported_symbols_list*:-exported_symbols_list %*} \ 293 %{Zflat_namespace:-flat_namespace} \ 294 %{headerpad_max_install_names*} \ 295 %{Zimage_base*:-image_base %*} \ 296 %{Zinit*:-init %*} \ 297 %{mmacosx-version-min=*:-macosx_version_min %*} \ 298 %{!mmacosx-version-min=*:%{shared-libgcc:-macosx_version_min 10.3}} \ 299 %{nomultidefs} \ 300 %{Zmulti_module:-multi_module} %{Zsingle_module:-single_module} \ 301 %{Zmultiply_defined*:-multiply_defined %*} \ 302 %{!Zmultiply_defined*:%{shared-libgcc: \ 303 %:version-compare(< 10.5 mmacosx-version-min= -multiply_defined) \ 304 %:version-compare(< 10.5 mmacosx-version-min= suppress)}} \ 305 %{Zmultiplydefinedunused*:-multiply_defined_unused %*} \ 306 %{prebind} %{noprebind} %{nofixprebinding} %{prebind_all_twolevel_modules} \ 307 %{read_only_relocs} \ 308 %{sectcreate*} %{sectorder*} %{seg1addr*} %{segprot*} \ 309 %{Zsegaddr*:-segaddr %*} \ 310 %{Zsegs_read_only_addr*:-segs_read_only_addr %*} \ 311 %{Zsegs_read_write_addr*:-segs_read_write_addr %*} \ 312 %{Zseg_addr_table*: -seg_addr_table %*} \ 313 %{Zfn_seg_addr_table_filename*:-seg_addr_table_filename %*} \ 314 %{sub_library*} %{sub_umbrella*} \ 315 " LINK_SYSROOT_SPEC " \ 316 %{twolevel_namespace} %{twolevel_namespace_hints} \ 317 %{umbrella*} \ 318 %{undefined*} \ 319 %{Zunexported_symbols_list*:-unexported_symbols_list %*} \ 320 %{Zweak_reference_mismatches*:-weak_reference_mismatches %*} \ 321 %{!Zweak_reference_mismatches*:-weak_reference_mismatches non-weak} \ 322 %{X} \ 323 %{y*} \ 324 %{w} \ 325 %{pagezero_size*} %{segs_read_*} %{seglinkedit} %{noseglinkedit} \ 326 %{sectalign*} %{sectobjectsymbols*} %{segcreate*} %{whyload} \ 327 %{whatsloaded} %{dylinker_install_name*} \ 328 %{dylinker} %{Mach} " 329 330 331 /* Machine dependent libraries. */ 332 333 #define LIB_SPEC "%{!static:-lSystem}" 334 335 /* Support -mmacosx-version-min by supplying different (stub) libgcc_s.dylib 336 libraries to link against, and by not linking against libgcc_s on 337 earlier-than-10.3.9. 338 339 Note that by default, -lgcc_eh is not linked against! This is 340 because in a future version of Darwin the EH frame information may 341 be in a new format, or the fallback routine might be changed; if 342 you want to explicitly link against the static version of those 343 routines, because you know you don't need to unwind through system 344 libraries, you need to explicitly say -static-libgcc. 345 346 If it is linked against, it has to be before -lgcc, because it may 347 need symbols from -lgcc. */ 348 #undef REAL_LIBGCC_SPEC 349 #define REAL_LIBGCC_SPEC \ 350 "%{static-libgcc|static: -lgcc_eh -lgcc; \ 351 shared-libgcc|fexceptions|fgnu-runtime: \ 352 %:version-compare(!> 10.5 mmacosx-version-min= -lgcc_s.10.4) \ 353 %:version-compare(>= 10.5 mmacosx-version-min= -lgcc_s.10.5) \ 354 -lgcc; \ 355 :%:version-compare(>< 10.3.9 10.5 mmacosx-version-min= -lgcc_s.10.4) \ 356 %:version-compare(>= 10.5 mmacosx-version-min= -lgcc_s.10.5) \ 357 -lgcc}" 358 359 /* We specify crt0.o as -lcrt0.o so that ld will search the library path. 360 361 crt3.o provides __cxa_atexit on systems that don't have it. Since 362 it's only used with C++, which requires passing -shared-libgcc, key 363 off that to avoid unnecessarily adding a destructor to every 364 powerpc program built. */ 365 366 #undef STARTFILE_SPEC 367 #define STARTFILE_SPEC \ 368 "%{!Zdynamiclib:%{Zbundle:%{!static:-lbundle1.o}} \ 369 %{!Zbundle:%{pg:%{static:-lgcrt0.o} \ 370 %{!static:%{object:-lgcrt0.o} \ 371 %{!object:%{preload:-lgcrt0.o} \ 372 %{!preload:-lgcrt1.o %(darwin_crt2)}}}} \ 373 %{!pg:%{static:-lcrt0.o} \ 374 %{!static:%{object:-lcrt0.o} \ 375 %{!object:%{preload:-lcrt0.o} \ 376 %{!preload:-lcrt1.o %(darwin_crt2)}}}}}} \ 377 %{shared-libgcc:%:version-compare(< 10.5 mmacosx-version-min= crt3.o%s)}" 378 379 /* The native Darwin linker doesn't necessarily place files in the order 380 that they're specified on the link line. Thus, it is pointless 381 to put anything in ENDFILE_SPEC. */ 382 /* #define ENDFILE_SPEC "" */ 383 384 /* Default Darwin ASM_SPEC, very simple. */ 385 #define ASM_SPEC "-arch %(darwin_arch) \ 386 %{Zforce_cpusubtype_ALL:-force_cpusubtype_ALL}" 387 388 /* We use Dbx symbol format. */ 389 390 #define DBX_DEBUGGING_INFO 1 391 392 /* Also enable Dwarf 2 as an option. */ 393 #define DWARF2_DEBUGGING_INFO 394 #define PREFERRED_DEBUGGING_TYPE DBX_DEBUG 395 396 #define DEBUG_FRAME_SECTION "__DWARF,__debug_frame,regular,debug" 397 #define DEBUG_INFO_SECTION "__DWARF,__debug_info,regular,debug" 398 #define DEBUG_ABBREV_SECTION "__DWARF,__debug_abbrev,regular,debug" 399 #define DEBUG_ARANGES_SECTION "__DWARF,__debug_aranges,regular,debug" 400 #define DEBUG_MACINFO_SECTION "__DWARF,__debug_macinfo,regular,debug" 401 #define DEBUG_LINE_SECTION "__DWARF,__debug_line,regular,debug" 402 #define DEBUG_LOC_SECTION "__DWARF,__debug_loc,regular,debug" 403 #define DEBUG_PUBNAMES_SECTION "__DWARF,__debug_pubnames,regular,debug" 404 #define DEBUG_STR_SECTION "__DWARF,__debug_str,regular,debug" 405 #define DEBUG_RANGES_SECTION "__DWARF,__debug_ranges,regular,debug" 406 407 /* When generating stabs debugging, use N_BINCL entries. */ 408 409 #define DBX_USE_BINCL 410 411 /* There is no limit to the length of stabs strings. */ 412 413 #define DBX_CONTIN_LENGTH 0 414 415 /* gdb needs a null N_SO at the end of each file for scattered loading. */ 416 417 #define DBX_OUTPUT_NULL_N_SO_AT_MAIN_SOURCE_FILE_END 418 419 /* GCC's definition of 'one_only' is the same as its definition of 'weak'. */ 420 #define MAKE_DECL_ONE_ONLY(DECL) (DECL_WEAK (DECL) = 1) 421 422 /* Mach-O supports 'weak imports', and 'weak definitions' in coalesced 423 sections. machopic_select_section ensures that weak variables go in 424 coalesced sections. Weak aliases (or any other kind of aliases) are 425 not supported. Weak symbols that aren't visible outside the .s file 426 are not supported. */ 427 #define ASM_WEAKEN_DECL(FILE, DECL, NAME, ALIAS) \ 428 do { \ 429 if (ALIAS) \ 430 { \ 431 warning (0, "alias definitions not supported in Mach-O; ignored"); \ 432 break; \ 433 } \ 434 \ 435 if (! DECL_EXTERNAL (DECL) && TREE_PUBLIC (DECL)) \ 436 targetm.asm_out.globalize_label (FILE, NAME); \ 437 if (DECL_EXTERNAL (DECL)) \ 438 fputs ("\t.weak_reference ", FILE); \ 439 else if (! lookup_attribute ("weak", DECL_ATTRIBUTES (DECL)) \ 440 && lookup_attribute ("weak_import", DECL_ATTRIBUTES (DECL))) \ 441 break; \ 442 else if (TREE_PUBLIC (DECL)) \ 443 fputs ("\t.weak_definition ", FILE); \ 444 else \ 445 break; \ 446 assemble_name (FILE, NAME); \ 447 fputc ('\n', FILE); \ 448 } while (0) 449 450 /* Darwin has the pthread routines in libSystem, which every program 451 links to, so there's no need for weak-ness for that. */ 452 #define GTHREAD_USE_WEAK 0 453 454 /* The Darwin linker imposes two limitations on common symbols: they 455 can't have hidden visibility, and they can't appear in dylibs. As 456 a consequence, we should never use common symbols to represent 457 vague linkage. */ 458 #undef USE_COMMON_FOR_ONE_ONLY 459 #define USE_COMMON_FOR_ONE_ONLY 0 460 461 /* The Darwin linker doesn't want coalesced symbols to appear in 462 a static archive's table of contents. */ 463 #undef TARGET_WEAK_NOT_IN_ARCHIVE_TOC 464 #define TARGET_WEAK_NOT_IN_ARCHIVE_TOC 1 465 466 /* On Darwin, we don't (at the time of writing) have linkonce sections 467 with names, so it's safe to make the class data not comdat. */ 468 #define TARGET_CXX_CLASS_DATA_ALWAYS_COMDAT hook_bool_void_false 469 470 /* We make exception information linkonce. */ 471 #undef TARGET_USES_WEAK_UNWIND_INFO 472 #define TARGET_USES_WEAK_UNWIND_INFO 1 473 474 /* We need to use a nonlocal label for the start of an EH frame: the 475 Darwin linker requires that a coalesced section start with a label. 476 Unfortunately, it also requires that 'debug' sections don't contain 477 labels. */ 478 #undef FRAME_BEGIN_LABEL 479 #define FRAME_BEGIN_LABEL (for_eh ? "EH_frame" : "Lframe") 480 481 /* Emit a label for the FDE corresponding to DECL. EMPTY means 482 emit a label for an empty FDE. */ 483 #define TARGET_ASM_EMIT_UNWIND_LABEL darwin_emit_unwind_label 484 485 /* Emit a label to separate the exception table. */ 486 #define TARGET_ASM_EMIT_EXCEPT_TABLE_LABEL darwin_emit_except_table_label 487 488 /* Our profiling scheme doesn't LP labels and counter words. */ 489 490 #define NO_PROFILE_COUNTERS 1 491 492 #undef INIT_SECTION_ASM_OP 493 #define INIT_SECTION_ASM_OP 494 495 #undef INVOKE__main 496 497 #define TARGET_ASM_CONSTRUCTOR machopic_asm_out_constructor 498 #define TARGET_ASM_DESTRUCTOR machopic_asm_out_destructor 499 500 /* Always prefix with an underscore. */ 501 502 #define USER_LABEL_PREFIX "_" 503 504 /* Don't output a .file directive. That is only used by the assembler for 505 error reporting. */ 506 #undef TARGET_ASM_FILE_START_FILE_DIRECTIVE 507 #define TARGET_ASM_FILE_START_FILE_DIRECTIVE false 508 509 #undef TARGET_ASM_FILE_END 510 #define TARGET_ASM_FILE_END darwin_file_end 511 512 #define ASM_OUTPUT_SKIP(FILE,SIZE) \ 513 fprintf (FILE, "\t.space "HOST_WIDE_INT_PRINT_UNSIGNED"\n", SIZE) 514 515 /* Give ObjC methods pretty symbol names. */ 516 517 #undef OBJC_GEN_METHOD_LABEL 518 #define OBJC_GEN_METHOD_LABEL(BUF,IS_INST,CLASS_NAME,CAT_NAME,SEL_NAME,NUM) \ 519 do { if (CAT_NAME) \ 520 sprintf (BUF, "%c[%s(%s) %s]", (IS_INST) ? '-' : '+', \ 521 (CLASS_NAME), (CAT_NAME), (SEL_NAME)); \ 522 else \ 523 sprintf (BUF, "%c[%s %s]", (IS_INST) ? '-' : '+', \ 524 (CLASS_NAME), (SEL_NAME)); \ 525 } while (0) 526 527 /* The RTTI data (e.g., __ti4name) is common and public (and static), 528 but it does need to be referenced via indirect PIC data pointers. 529 The machopic_define_symbol calls are telling the machopic subsystem 530 that the name *is* defined in this module, so it doesn't need to 531 make them indirect. */ 532 533 #undef ASM_DECLARE_OBJECT_NAME 534 #define ASM_DECLARE_OBJECT_NAME(FILE, NAME, DECL) \ 535 do { \ 536 const char *xname = NAME; \ 537 if (GET_CODE (XEXP (DECL_RTL (DECL), 0)) != SYMBOL_REF) \ 538 xname = IDENTIFIER_POINTER (DECL_NAME (DECL)); \ 539 if (! DECL_WEAK (DECL) \ 540 && ((TREE_STATIC (DECL) \ 541 && (!DECL_COMMON (DECL) || !TREE_PUBLIC (DECL))) \ 542 || DECL_INITIAL (DECL))) \ 543 machopic_define_symbol (DECL_RTL (DECL)); \ 544 if ((TREE_STATIC (DECL) \ 545 && (!DECL_COMMON (DECL) || !TREE_PUBLIC (DECL))) \ 546 || DECL_INITIAL (DECL)) \ 547 (* targetm.encode_section_info) (DECL, DECL_RTL (DECL), false); \ 548 ASM_OUTPUT_LABEL (FILE, xname); \ 549 /* Darwin doesn't support zero-size objects, so give them a \ 550 byte. */ \ 551 if (tree_low_cst (DECL_SIZE_UNIT (DECL), 1) == 0) \ 552 assemble_zeros (1); \ 553 } while (0) 554 555 #define ASM_DECLARE_FUNCTION_NAME(FILE, NAME, DECL) \ 556 do { \ 557 const char *xname = NAME; \ 558 if (GET_CODE (XEXP (DECL_RTL (DECL), 0)) != SYMBOL_REF) \ 559 xname = IDENTIFIER_POINTER (DECL_NAME (DECL)); \ 560 if (! DECL_WEAK (DECL) \ 561 && ((TREE_STATIC (DECL) \ 562 && (!DECL_COMMON (DECL) || !TREE_PUBLIC (DECL))) \ 563 || DECL_INITIAL (DECL))) \ 564 machopic_define_symbol (DECL_RTL (DECL)); \ 565 if ((TREE_STATIC (DECL) \ 566 && (!DECL_COMMON (DECL) || !TREE_PUBLIC (DECL))) \ 567 || DECL_INITIAL (DECL)) \ 568 (* targetm.encode_section_info) (DECL, DECL_RTL (DECL), false); \ 569 ASM_OUTPUT_LABEL (FILE, xname); \ 570 } while (0) 571 572 #define ASM_DECLARE_CONSTANT_NAME(FILE, NAME, EXP, SIZE) \ 573 do { \ 574 ASM_OUTPUT_LABEL (FILE, NAME); \ 575 /* Darwin doesn't support zero-size objects, so give them a \ 576 byte. */ \ 577 if ((SIZE) == 0) \ 578 assemble_zeros (1); \ 579 } while (0) 580 581 /* Wrap new method names in quotes so the assembler doesn't gag. 582 Make Objective-C internal symbols local. */ 583 584 #undef ASM_OUTPUT_LABELREF 585 #define ASM_OUTPUT_LABELREF(FILE,NAME) \ 586 do { \ 587 const char *xname = (NAME); \ 588 if (! strcmp (xname, "<pic base>")) \ 589 machopic_output_function_base_name(FILE); \ 590 else if (xname[0] == '&' || xname[0] == '*') \ 591 { \ 592 int len = strlen (xname); \ 593 if (len > 6 && !strcmp ("$stub", xname + len - 5)) \ 594 machopic_validate_stub_or_non_lazy_ptr (xname); \ 595 else if (len > 7 && !strcmp ("$stub\"", xname + len - 6)) \ 596 machopic_validate_stub_or_non_lazy_ptr (xname); \ 597 else if (len > 14 && !strcmp ("$non_lazy_ptr", xname + len - 13)) \ 598 machopic_validate_stub_or_non_lazy_ptr (xname); \ 599 else if (len > 15 && !strcmp ("$non_lazy_ptr\"", xname + len - 14)) \ 600 machopic_validate_stub_or_non_lazy_ptr (xname); \ 601 if (xname[1] != '"' && name_needs_quotes (&xname[1])) \ 602 fprintf (FILE, "\"%s\"", &xname[1]); \ 603 else \ 604 fputs (&xname[1], FILE); \ 605 } \ 606 else if (xname[0] == '+' || xname[0] == '-') \ 607 fprintf (FILE, "\"%s\"", xname); \ 608 else if (!strncmp (xname, "_OBJC_", 6)) \ 609 fprintf (FILE, "L%s", xname); \ 610 else if (!strncmp (xname, ".objc_class_name_", 17)) \ 611 fprintf (FILE, "%s", xname); \ 612 else if (xname[0] != '"' && name_needs_quotes (xname)) \ 613 fprintf (FILE, "\"%s\"", xname); \ 614 else \ 615 asm_fprintf (FILE, "%U%s", xname); \ 616 } while (0) 617 618 /* Output before executable code. */ 619 #undef TEXT_SECTION_ASM_OP 620 #define TEXT_SECTION_ASM_OP "\t.text" 621 622 /* Output before writable data. */ 623 624 #undef DATA_SECTION_ASM_OP 625 #define DATA_SECTION_ASM_OP "\t.data" 626 627 #undef ALIGN_ASM_OP 628 #define ALIGN_ASM_OP ".align" 629 630 #undef ASM_OUTPUT_ALIGN 631 #define ASM_OUTPUT_ALIGN(FILE,LOG) \ 632 if ((LOG) != 0) \ 633 fprintf (FILE, "\t%s %d\n", ALIGN_ASM_OP, (LOG)) 634 635 /* Ensure correct alignment of bss data. */ 636 637 #undef ASM_OUTPUT_ALIGNED_DECL_LOCAL 638 #define ASM_OUTPUT_ALIGNED_DECL_LOCAL(FILE, DECL, NAME, SIZE, ALIGN) \ 639 do { \ 640 unsigned HOST_WIDE_INT _new_size = SIZE; \ 641 fputs (".lcomm ", (FILE)); \ 642 assemble_name ((FILE), (NAME)); \ 643 if (_new_size == 0) _new_size = 1; \ 644 fprintf ((FILE), ","HOST_WIDE_INT_PRINT_UNSIGNED",%u\n", _new_size, \ 645 floor_log2 ((ALIGN) / BITS_PER_UNIT)); \ 646 if ((DECL) && ((TREE_STATIC (DECL) \ 647 && (!DECL_COMMON (DECL) || !TREE_PUBLIC (DECL))) \ 648 || DECL_INITIAL (DECL))) \ 649 { \ 650 (* targetm.encode_section_info) (DECL, DECL_RTL (DECL), false); \ 651 machopic_define_symbol (DECL_RTL (DECL)); \ 652 } \ 653 } while (0) 654 655 /* The maximum alignment which the object file format can support in 656 bits. For Mach-O, this is 2^15 bytes. */ 657 658 #undef MAX_OFILE_ALIGNMENT 659 #define MAX_OFILE_ALIGNMENT (0x8000 * 8) 660 661 /* Declare the section variables. */ 662 #ifndef USED_FOR_TARGET 663 enum darwin_section_enum { 664 #define DEF_SECTION(NAME, FLAGS, DIRECTIVE, OBJC) NAME, 665 #include "darwin-sections.def" 666 #undef DEF_SECTION 667 NUM_DARWIN_SECTIONS 668 }; 669 extern GTY(()) section * darwin_sections[NUM_DARWIN_SECTIONS]; 670 #endif 671 672 #undef TARGET_ASM_SELECT_SECTION 673 #define TARGET_ASM_SELECT_SECTION machopic_select_section 674 #define USE_SELECT_SECTION_FOR_FUNCTIONS 675 676 #undef TARGET_ASM_SELECT_RTX_SECTION 677 #define TARGET_ASM_SELECT_RTX_SECTION machopic_select_rtx_section 678 #undef TARGET_ASM_UNIQUE_SECTION 679 #define TARGET_ASM_UNIQUE_SECTION darwin_unique_section 680 #undef TARGET_ASM_FUNCTION_RODATA_SECTION 681 #define TARGET_ASM_FUNCTION_RODATA_SECTION default_no_function_rodata_section 682 #undef TARGET_ASM_RELOC_RW_MASK 683 #define TARGET_ASM_RELOC_RW_MASK machopic_reloc_rw_mask 684 685 686 #define ASM_DECLARE_UNRESOLVED_REFERENCE(FILE,NAME) \ 687 do { \ 688 if (FILE) { \ 689 if (MACHOPIC_INDIRECT) \ 690 fprintf (FILE, "\t.lazy_reference "); \ 691 else \ 692 fprintf (FILE, "\t.reference "); \ 693 assemble_name (FILE, NAME); \ 694 fprintf (FILE, "\n"); \ 695 } \ 696 } while (0) 697 698 #define ASM_DECLARE_CLASS_REFERENCE(FILE,NAME) \ 699 do { \ 700 if (FILE) { \ 701 fprintf (FILE, "\t"); \ 702 assemble_name (FILE, NAME); \ 703 fprintf (FILE, "=0\n"); \ 704 (*targetm.asm_out.globalize_label) (FILE, NAME); \ 705 } \ 706 } while (0) 707 708 /* Globalizing directive for a label. */ 709 #define GLOBAL_ASM_OP ".globl " 710 #define TARGET_ASM_GLOBALIZE_LABEL darwin_globalize_label 711 712 /* Emit an assembler directive to set visibility for a symbol. Used 713 to support visibility attribute and Darwin's private extern 714 feature. */ 715 #undef TARGET_ASM_ASSEMBLE_VISIBILITY 716 #define TARGET_ASM_ASSEMBLE_VISIBILITY darwin_assemble_visibility 717 718 /* Extra attributes for Darwin. */ 719 #define SUBTARGET_ATTRIBUTE_TABLE \ 720 /* { name, min_len, max_len, decl_req, type_req, fn_type_req, handler } */ \ 721 { "apple_kext_compatibility", 0, 0, false, true, false, \ 722 darwin_handle_kext_attribute }, \ 723 { "weak_import", 0, 0, true, false, false, \ 724 darwin_handle_weak_import_attribute } 725 726 #undef ASM_GENERATE_INTERNAL_LABEL 727 #define ASM_GENERATE_INTERNAL_LABEL(LABEL,PREFIX,NUM) \ 728 sprintf (LABEL, "*%s%ld", PREFIX, (long)(NUM)) 729 730 #undef TARGET_ASM_MARK_DECL_PRESERVED 731 #define TARGET_ASM_MARK_DECL_PRESERVED darwin_mark_decl_preserved 732 733 /* Set on a symbol with SYMBOL_FLAG_FUNCTION or 734 MACHO_SYMBOL_FLAG_VARIABLE to indicate that the function or 735 variable has been defined in this translation unit. 736 When porting Mach-O to new architectures you need to make 737 sure these aren't clobbered by the backend. */ 738 739 #define MACHO_SYMBOL_FLAG_VARIABLE (SYMBOL_FLAG_MACH_DEP) 740 #define MACHO_SYMBOL_FLAG_DEFINED ((SYMBOL_FLAG_MACH_DEP) << 1) 741 742 /* Set on a symbol to indicate when fix-and-continue style code 743 generation is being used and the symbol refers to a static symbol 744 that should be rebound from new instances of a translation unit to 745 the original instance of the data. */ 746 747 #define MACHO_SYMBOL_STATIC ((SYMBOL_FLAG_MACH_DEP) << 2) 748 749 /* Symbolic names for various things we might know about a symbol. */ 750 751 enum machopic_addr_class { 752 MACHOPIC_UNDEFINED, 753 MACHOPIC_DEFINED_DATA, 754 MACHOPIC_UNDEFINED_DATA, 755 MACHOPIC_DEFINED_FUNCTION, 756 MACHOPIC_UNDEFINED_FUNCTION 757 }; 758 759 /* Macros defining the various PIC cases. */ 760 761 #define MACHO_DYNAMIC_NO_PIC_P (TARGET_DYNAMIC_NO_PIC) 762 #define MACHOPIC_INDIRECT (flag_pic || MACHO_DYNAMIC_NO_PIC_P) 763 #define MACHOPIC_JUST_INDIRECT (MACHO_DYNAMIC_NO_PIC_P) 764 #define MACHOPIC_PURE (flag_pic && ! MACHO_DYNAMIC_NO_PIC_P) 765 766 #undef TARGET_ENCODE_SECTION_INFO 767 #define TARGET_ENCODE_SECTION_INFO darwin_encode_section_info 768 #undef TARGET_STRIP_NAME_ENCODING 769 #define TARGET_STRIP_NAME_ENCODING default_strip_name_encoding 770 771 #define GEN_BINDER_NAME_FOR_STUB(BUF,STUB,STUB_LENGTH) \ 772 do { \ 773 const char *const stub_ = (STUB); \ 774 char *buffer_ = (BUF); \ 775 strcpy (buffer_, stub_); \ 776 if (stub_[0] == '"') \ 777 { \ 778 strcpy (buffer_ + (STUB_LENGTH) - 1, "_binder\""); \ 779 } \ 780 else \ 781 { \ 782 strcpy (buffer_ + (STUB_LENGTH), "_binder"); \ 783 } \ 784 } while (0) 785 786 #define GEN_SYMBOL_NAME_FOR_SYMBOL(BUF,SYMBOL,SYMBOL_LENGTH) \ 787 do { \ 788 const char *const symbol_ = (SYMBOL); \ 789 char *buffer_ = (BUF); \ 790 if (name_needs_quotes (symbol_) && symbol_[0] != '"') \ 791 { \ 792 sprintf (buffer_, "\"%s\"", symbol_); \ 793 } \ 794 else \ 795 { \ 796 strcpy (buffer_, symbol_); \ 797 } \ 798 } while (0) 799 800 /* Given a symbol name string, create the lazy pointer version 801 of the symbol name. */ 802 803 #define GEN_LAZY_PTR_NAME_FOR_SYMBOL(BUF,SYMBOL,SYMBOL_LENGTH) \ 804 do { \ 805 const char *symbol_ = (SYMBOL); \ 806 char *buffer_ = (BUF); \ 807 if (symbol_[0] == '"') \ 808 { \ 809 strcpy (buffer_, "\"L"); \ 810 strcpy (buffer_ + 2, symbol_ + 1); \ 811 strcpy (buffer_ + (SYMBOL_LENGTH), "$lazy_ptr\""); \ 812 } \ 813 else if (name_needs_quotes (symbol_)) \ 814 { \ 815 strcpy (buffer_, "\"L"); \ 816 strcpy (buffer_ + 2, symbol_); \ 817 strcpy (buffer_ + (SYMBOL_LENGTH) + 2, "$lazy_ptr\""); \ 818 } \ 819 else \ 820 { \ 821 strcpy (buffer_, "L"); \ 822 strcpy (buffer_ + 1, symbol_); \ 823 strcpy (buffer_ + (SYMBOL_LENGTH) + 1, "$lazy_ptr"); \ 824 } \ 825 } while (0) 826 827 #define EH_FRAME_SECTION_NAME "__TEXT" 828 #define EH_FRAME_SECTION_ATTR ",coalesced,no_toc+strip_static_syms+live_support" 829 830 /* Java runtime class list. */ 831 #define JCR_SECTION_NAME "__DATA,jcr,regular,no_dead_strip" 832 833 #undef ASM_PREFERRED_EH_DATA_FORMAT 834 #define ASM_PREFERRED_EH_DATA_FORMAT(CODE,GLOBAL) \ 835 (((CODE) == 2 && (GLOBAL) == 1) \ 836 ? (DW_EH_PE_pcrel | DW_EH_PE_indirect | DW_EH_PE_sdata4) : \ 837 ((CODE) == 1 || (GLOBAL) == 0) ? DW_EH_PE_pcrel : DW_EH_PE_absptr) 838 839 #define ASM_OUTPUT_DWARF_DELTA(FILE,SIZE,LABEL1,LABEL2) \ 840 darwin_asm_output_dwarf_delta (FILE, SIZE, LABEL1, LABEL2) 841 842 #define ASM_OUTPUT_DWARF_OFFSET(FILE,SIZE,LABEL,BASE) \ 843 darwin_asm_output_dwarf_offset (FILE, SIZE, LABEL, BASE) 844 845 #define ASM_MAYBE_OUTPUT_ENCODED_ADDR_RTX(ASM_OUT_FILE, ENCODING, SIZE, ADDR, DONE) \ 846 if (ENCODING == ASM_PREFERRED_EH_DATA_FORMAT (2, 1)) { \ 847 darwin_non_lazy_pcrel (ASM_OUT_FILE, ADDR); \ 848 goto DONE; \ 849 } 850 851 /* Experimentally, putting jump tables in text is faster on SPEC. 852 Also this is needed for correctness for coalesced functions. */ 853 854 #ifndef JUMP_TABLES_IN_TEXT_SECTION 855 #define JUMP_TABLES_IN_TEXT_SECTION 1 856 #endif 857 858 #define TARGET_TERMINATE_DW2_EH_FRAME_INFO false 859 860 #define TARGET_ASM_INIT_SECTIONS darwin_init_sections 861 #undef TARGET_ASM_NAMED_SECTION 862 #define TARGET_ASM_NAMED_SECTION darwin_asm_named_section 863 864 /* Handle pragma weak and pragma pack. */ 865 #define HANDLE_SYSV_PRAGMA 1 866 867 #define HANDLE_PRAGMA_PACK_PUSH_POP 1 868 869 #define DARWIN_REGISTER_TARGET_PRAGMAS() \ 870 do { \ 871 c_register_pragma (0, "mark", darwin_pragma_ignore); \ 872 c_register_pragma (0, "options", darwin_pragma_options); \ 873 c_register_pragma (0, "segment", darwin_pragma_ignore); \ 874 c_register_pragma (0, "unused", darwin_pragma_unused); \ 875 c_register_pragma (0, "ms_struct", darwin_pragma_ms_struct); \ 876 } while (0) 877 878 #undef ASM_APP_ON 879 #define ASM_APP_ON "" 880 #undef ASM_APP_OFF 881 #define ASM_APP_OFF "" 882 883 void darwin_register_frameworks (const char *, const char *, int); 884 void darwin_register_objc_includes (const char *, const char *, int); 885 #define TARGET_EXTRA_PRE_INCLUDES darwin_register_objc_includes 886 #define TARGET_EXTRA_INCLUDES darwin_register_frameworks 887 888 void add_framework_path (char *); 889 #define TARGET_OPTF add_framework_path 890 891 #define TARGET_POSIX_IO 892 893 /* All new versions of Darwin have C99 functions. */ 894 895 #define TARGET_C99_FUNCTIONS 1 896 897 #define WINT_TYPE "int" 898 899 /* Every program on darwin links against libSystem which contains the pthread 900 routines, so there's no need to explicitly call out when doing threaded 901 work. */ 902 903 #undef GOMP_SELF_SPECS 904 #define GOMP_SELF_SPECS "" 905 906 /* Darwin can't support anchors until we can cope with the adjustments 907 to size that ASM_DECLARE_OBJECT_NAME and ASM_DECLARE_CONSTANT_NAME 908 when outputting members of an anchor block and the linker can be 909 taught to keep them together or we find some other suitable 910 code-gen technique. */ 911 912 #if 0 913 #define TARGET_ASM_OUTPUT_ANCHOR darwin_asm_output_anchor 914 #else 915 #define TARGET_ASM_OUTPUT_ANCHOR NULL 916 #endif 917 918 /* Attempt to turn on execute permission for the stack. This may be 919 used by INITIALIZE_TRAMPOLINE of the target needs it (that is, 920 if the target machine can change execute permissions on a page). 921 922 There is no way to query the execute permission of the stack, so 923 we always issue the mprotect() call. 924 925 Unfortunately it is not possible to make this namespace-clean. 926 927 Also note that no errors should be emitted by this code; it is 928 considered dangerous for library calls to send messages to 929 stdout/stderr. */ 930 931 #define ENABLE_EXECUTE_STACK \ 932 extern void __enable_execute_stack (void *); \ 933 void \ 934 __enable_execute_stack (void *addr) \ 935 { \ 936 extern int mprotect (void *, size_t, int); \ 937 extern int getpagesize (void); \ 938 static int size; \ 939 static long mask; \ 940 \ 941 char *page, *end; \ 942 \ 943 if (size == 0) \ 944 { \ 945 size = getpagesize(); \ 946 mask = ~((long) size - 1); \ 947 } \ 948 \ 949 page = (char *) (((long) addr) & mask); \ 950 end = (char *) ((((long) (addr + (TARGET_64BIT ? 48 : 40))) & mask) + size); \ 951 \ 952 /* 7 == PROT_READ | PROT_WRITE | PROT_EXEC */ \ 953 (void) mprotect (page, end - page, 7); \ 954 } 955 956 /* For Apple KEXTs, we make the constructors return this to match gcc 957 2.95. */ 958 #define TARGET_CXX_CDTOR_RETURNS_THIS (darwin_kextabi_p) 959 extern int flag_mkernel; 960 extern int flag_apple_kext; 961 #define TARGET_KEXTABI flag_apple_kext 962 963 #endif /* CONFIG_DARWIN_H */ 964