1 /* Target definitions for Darwin (Mac OS X) systems. 2 Copyright (C) 1989-2019 Free Software Foundation, Inc. 3 Contributed by Apple Computer Inc. 4 5 This file is part of GCC. 6 7 GCC is free software; you can redistribute it and/or modify 8 it under the terms of the GNU General Public License as published by 9 the Free Software Foundation; either version 3, or (at your option) 10 any later version. 11 12 GCC is distributed in the hope that it will be useful, 13 but WITHOUT ANY WARRANTY; without even the implied warranty of 14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 15 GNU General Public License for more details. 16 17 Under Section 7 of GPL version 3, you are granted additional 18 permissions described in the GCC Runtime Library Exception, version 19 3.1, as published by the Free Software Foundation. 20 21 You should have received a copy of the GNU General Public License and 22 a copy of the GCC Runtime Library Exception along with this program; 23 see the files COPYING3 and COPYING.RUNTIME respectively. If not, see 24 <http://www.gnu.org/licenses/>. */ 25 26 #ifndef CONFIG_DARWIN_H 27 #define CONFIG_DARWIN_H 28 29 /* The definitions in this file are common to all processor types 30 running Darwin, which is the kernel for Mac OS X. Darwin is 31 basically a BSD user layer laid over a Mach kernel, then evolved 32 for many years (at NeXT) in parallel with other Unix systems. So 33 while the runtime is a somewhat idiosyncratic Mach-based thing, 34 other definitions look like they would for a BSD variant. */ 35 36 /* Although NeXT ran on many different architectures, as of Jan 2001 37 the only supported Darwin targets are PowerPC and x86. */ 38 39 /* One of Darwin's NeXT legacies is the Mach-O format, which is partly 40 like a.out and partly like COFF, with additional features like 41 multi-architecture binary support. */ 42 43 #define DARWIN_X86 0 44 #define DARWIN_PPC 0 45 46 /* Suppress g++ attempt to link in the math library automatically. */ 47 #define MATH_LIBRARY "" 48 49 /* We have atexit. */ 50 51 #define HAVE_ATEXIT 52 53 /* Define an empty body for the function do_global_dtors() in libgcc2.c. */ 54 55 #define DO_GLOBAL_DTORS_BODY 56 57 /* The string value for __SIZE_TYPE__. */ 58 59 #ifndef SIZE_TYPE 60 #define SIZE_TYPE "long unsigned int" 61 #endif 62 63 /* Type used for ptrdiff_t, as a string used in a declaration. */ 64 65 #undef PTRDIFF_TYPE 66 #define PTRDIFF_TYPE "int" 67 68 /* wchar_t is int. */ 69 70 #undef WCHAR_TYPE 71 #define WCHAR_TYPE "int" 72 #undef WCHAR_TYPE_SIZE 73 #define WCHAR_TYPE_SIZE 32 74 75 #define INT8_TYPE "signed char" 76 #define INT16_TYPE "short int" 77 #define INT32_TYPE "int" 78 #define INT64_TYPE "long long int" 79 #define UINT8_TYPE "unsigned char" 80 #define UINT16_TYPE "short unsigned int" 81 #define UINT32_TYPE "unsigned int" 82 #define UINT64_TYPE "long long unsigned int" 83 84 #define INT_LEAST8_TYPE "signed char" 85 #define INT_LEAST16_TYPE "short int" 86 #define INT_LEAST32_TYPE "int" 87 #define INT_LEAST64_TYPE "long long int" 88 #define UINT_LEAST8_TYPE "unsigned char" 89 #define UINT_LEAST16_TYPE "short unsigned int" 90 #define UINT_LEAST32_TYPE "unsigned int" 91 #define UINT_LEAST64_TYPE "long long unsigned int" 92 93 #define INT_FAST8_TYPE "signed char" 94 #define INT_FAST16_TYPE "short int" 95 #define INT_FAST32_TYPE "int" 96 #define INT_FAST64_TYPE "long long int" 97 #define UINT_FAST8_TYPE "unsigned char" 98 #define UINT_FAST16_TYPE "short unsigned int" 99 #define UINT_FAST32_TYPE "unsigned int" 100 #define UINT_FAST64_TYPE "long long unsigned int" 101 102 #define INTPTR_TYPE "long int" 103 #define UINTPTR_TYPE "long unsigned int" 104 105 #define SIG_ATOMIC_TYPE "int" 106 107 /* Default to using the NeXT-style runtime, since that's what is 108 pre-installed on Darwin systems. */ 109 110 #define NEXT_OBJC_RUNTIME 1 111 112 /* Don't default to pcc-struct-return, because gcc is the only compiler, and 113 we want to retain compatibility with older gcc versions. */ 114 115 #undef DEFAULT_PCC_STRUCT_RETURN 116 #define DEFAULT_PCC_STRUCT_RETURN 0 117 118 /* True if pragma ms_struct is in effect. */ 119 extern GTY(()) int darwin_ms_struct; 120 121 #define DRIVER_SELF_SPECS \ 122 "%{gfull:-g -fno-eliminate-unused-debug-symbols} %<gfull", \ 123 "%{gused:-g -feliminate-unused-debug-symbols} %<gused", \ 124 "%{fapple-kext|mkernel:-static}", \ 125 "%{shared:-Zdynamiclib} %<shared", \ 126 "%{gsplit-dwarf:%ngsplit-dwarf is not supported on this platform} \ 127 %<gsplit-dwarf" 128 129 #if LD64_HAS_EXPORT_DYNAMIC 130 #define DARWIN_RDYNAMIC "%{rdynamic:-export_dynamic}" 131 #else 132 #define DARWIN_RDYNAMIC "%{rdynamic:%nrdynamic is not supported}" 133 #endif 134 135 /* FIXME: we should check that the linker supports the -pie and -no_pie. 136 options. */ 137 #define DARWIN_PIE_SPEC \ 138 "%{pie|fpie|fPIE:\ 139 %{mdynamic-no-pic: \ 140 %n'-mdynamic-no-pic' overrides '-pie', '-fpie' or '-fPIE'; \ 141 :%:version-compare(>= 10.5 mmacosx-version-min= -pie) }} " 142 143 #define DARWIN_NOPIE_SPEC \ 144 "%{no-pie|fno-pie|fno-PIE: \ 145 %:version-compare(>= 10.7 mmacosx-version-min= -no_pie) }" 146 147 #define DARWIN_CC1_SPEC \ 148 "%{findirect-virtual-calls: -fapple-kext} %<findirect-virtual-calls " \ 149 "%{fterminated-vtables: -fapple-kext} %<fterminated-vtables " \ 150 "%<filelist* %<framework*" 151 152 #define SUBSUBTARGET_OVERRIDE_OPTIONS \ 153 do { \ 154 darwin_override_options (); \ 155 } while (0) 156 157 #define SUBTARGET_C_COMMON_OVERRIDE_OPTIONS do { \ 158 if (flag_mkernel || flag_apple_kext) \ 159 { \ 160 if (flag_use_cxa_atexit == 2) \ 161 flag_use_cxa_atexit = 0; \ 162 /* kexts should always be built without the coalesced sections \ 163 because the kernel loader doesn't grok such sections. */ \ 164 flag_weak = 0; \ 165 /* No RTTI in kexts. */ \ 166 flag_rtti = 0; \ 167 } \ 168 } while (0) 169 170 /* Machine dependent cpp options. Don't add more options here, add 171 them to darwin_cpp_builtins in darwin-c.c. */ 172 173 #undef CPP_SPEC 174 #define CPP_SPEC "%{static:%{!dynamic:-D__STATIC__}}%{!static:-D__DYNAMIC__}" \ 175 " %{pthread:-D_REENTRANT}" 176 177 /* This is a fix for PR41260 by passing -no_compact_unwind on darwin10 and 178 later until the assembler, linker and libunwind are able to deal with the 179 output from GCC. 180 181 FIXME: we should check that the linker supports the option. 182 */ 183 184 #define DARWIN_NOCOMPACT_UNWIND \ 185 " %:version-compare(>= 10.6 mmacosx-version-min= -no_compact_unwind) " 186 187 /* In Darwin linker specs we can put -lcrt0.o and ld will search the library 188 path for crt0.o or -lcrtx.a and it will search for for libcrtx.a. As for 189 other ports, we can also put xxx.{o,a}%s and get the appropriate complete 190 startfile absolute directory. This latter point is important when we want 191 to override ld's rule of .dylib being found ahead of .a and the user wants 192 the convenience library to be linked. */ 193 194 /* The LINK_COMMAND spec is mostly a clone of the standard LINK_COMMAND_SPEC, 195 plus precomp, libtool, and fat build additions. 196 197 In general, random Darwin linker flags should go into LINK_SPEC 198 instead of LINK_COMMAND_SPEC. The command spec is better for 199 specifying the handling of options understood by generic Unix 200 linkers, and for positional arguments like libraries. */ 201 202 #define LINK_COMMAND_SPEC_A \ 203 "%{!fdump=*:%{!fsyntax-only:%{!c:%{!M:%{!MM:%{!E:%{!S:\ 204 %(linker)" \ 205 LINK_PLUGIN_SPEC \ 206 "%{flto*:%<fcompare-debug*} \ 207 %{flto} %{fno-lto} %{flto=*} \ 208 %l " LINK_COMPRESS_DEBUG_SPEC \ 209 "%X %{s} %{t} %{Z} %{u*} \ 210 %{e*} %{r} \ 211 %{o*}%{!o:-o a.out} \ 212 %{!nostdlib:%{!r:%{!nostartfiles:%S}}} \ 213 %{L*} %(link_libgcc) %o %{fprofile-arcs|fprofile-generate*|coverage:-lgcov} \ 214 %{fopenacc|fopenmp|%:gt(%{ftree-parallelize-loops=*:%*} 1): \ 215 %{static|static-libgcc|static-libstdc++|static-libgfortran: libgomp.a%s; : -lgomp } } \ 216 %{fgnu-tm: \ 217 %{static|static-libgcc|static-libstdc++|static-libgfortran: libitm.a%s; : -litm } } \ 218 %{!nostdlib:%{!r:%{!nodefaultlibs:\ 219 %{%:sanitize(address): -lasan } \ 220 %{%:sanitize(undefined): -lubsan } \ 221 %(link_ssp) \ 222 %(link_gcc_c_sequence) \ 223 }}}\ 224 %{!nostdlib:%{!r:%{!nostartfiles:%E}}} %{T*} %{F*} "\ 225 DARWIN_PIE_SPEC \ 226 DARWIN_NOPIE_SPEC \ 227 DARWIN_RDYNAMIC \ 228 DARWIN_NOCOMPACT_UNWIND \ 229 "}}}}}}} %<pie %<no-pie %<rdynamic " 230 231 #define DSYMUTIL "\ndsymutil" 232 233 #define DSYMUTIL_SPEC \ 234 "%{!fdump=*:%{!fsyntax-only:%{!c:%{!M:%{!MM:%{!E:%{!S:\ 235 %{v} \ 236 %{gdwarf-2:%{!gstabs*:%{%:debug-level-gt(0): -idsym}}}\ 237 %{.c|.cc|.C|.cpp|.cp|.c++|.cxx|.CPP|.m|.mm: \ 238 %{gdwarf-2:%{!gstabs*:%{%:debug-level-gt(0): -dsym}}}}}}}}}}}" 239 240 #define LINK_COMMAND_SPEC LINK_COMMAND_SPEC_A DSYMUTIL_SPEC 241 242 /* Tell collect2 to run dsymutil for us as necessary. */ 243 #define COLLECT_RUN_DSYMUTIL 1 244 245 /* We only want one instance of %G, since libSystem (Darwin's -lc) does not depend 246 on libgcc. */ 247 #undef LINK_GCC_C_SEQUENCE_SPEC 248 #define LINK_GCC_C_SEQUENCE_SPEC "%G %{!nolibc:%L}" 249 250 /* ld64 supports a sysroot, it just has a different name and there's no easy 251 way to check for it at config time. */ 252 #undef HAVE_LD_SYSROOT 253 #define HAVE_LD_SYSROOT 1 254 /* It seems the only (working) way to get a space after %R is to append a 255 dangling '/'. */ 256 #define SYSROOT_SPEC "%{!isysroot*:-syslibroot %R/ }" 257 258 /* Do the same as clang, for now, and insert the sysroot for ld when an 259 isysroot is specified. */ 260 #define LINK_SYSROOT_SPEC "%{isysroot*:-syslibroot %*}" 261 262 /* Suppress the addition of extra prefix paths when a sysroot is in use. */ 263 #define STANDARD_STARTFILE_PREFIX_1 "" 264 #define STANDARD_STARTFILE_PREFIX_2 "" 265 266 /* Please keep the random linker options in alphabetical order (modulo 267 'Z' and 'no' prefixes). Note that options taking arguments may appear 268 multiple times on a command line with different arguments each time, 269 so put a * after their names so all of them get passed. */ 270 #define LINK_SPEC \ 271 "%{static}%{!static:-dynamic} \ 272 %:remove-outfile(-ldl) \ 273 %:remove-outfile(-lm) \ 274 %:remove-outfile(-lpthread) \ 275 %{fgnu-runtime: %{static|static-libgcc: \ 276 %:replace-outfile(-lobjc libobjc-gnu.a%s); \ 277 :%:replace-outfile(-lobjc -lobjc-gnu ) } }\ 278 %{static|static-libgcc|static-libgfortran:%:replace-outfile(-lgfortran libgfortran.a%s)}\ 279 %{static|static-libgcc|static-libstdc++|static-libgfortran:%:replace-outfile(-lgomp libgomp.a%s)}\ 280 %{static|static-libgcc|static-libstdc++:%:replace-outfile(-lstdc++ libstdc++.a%s)}\ 281 %{!Zdynamiclib: \ 282 %{Zforce_cpusubtype_ALL:-arch %(darwin_arch) -force_cpusubtype_ALL} \ 283 %{!Zforce_cpusubtype_ALL:-arch %(darwin_subarch)} \ 284 %{Zbundle:-bundle} \ 285 %{Zbundle_loader*:-bundle_loader %*} \ 286 %{client_name*} \ 287 %{compatibility_version*:%e-compatibility_version only allowed with -dynamiclib\ 288 } \ 289 %{current_version*:%e-current_version only allowed with -dynamiclib} \ 290 %{Zforce_flat_namespace:-force_flat_namespace} \ 291 %{Zinstall_name*:%e-install_name only allowed with -dynamiclib} \ 292 %{keep_private_externs} \ 293 %{private_bundle} \ 294 } \ 295 %{Zdynamiclib: -dylib \ 296 %{Zbundle:%e-bundle not allowed with -dynamiclib} \ 297 %{Zbundle_loader*:%e-bundle_loader not allowed with -dynamiclib} \ 298 %{client_name*:%e-client_name not allowed with -dynamiclib} \ 299 %{compatibility_version*:-dylib_compatibility_version %*} \ 300 %{current_version*:-dylib_current_version %*} \ 301 %{Zforce_cpusubtype_ALL:-arch %(darwin_arch)} \ 302 %{!Zforce_cpusubtype_ALL: -arch %(darwin_subarch)} \ 303 %{Zforce_flat_namespace:%e-force_flat_namespace not allowed with -dynamiclib} \ 304 %{Zinstall_name*:-dylib_install_name %*} \ 305 %{keep_private_externs:%e-keep_private_externs not allowed with -dynamiclib} \ 306 %{private_bundle:%e-private_bundle not allowed with -dynamiclib} \ 307 } \ 308 %{Zall_load:-all_load} \ 309 %{Zallowable_client*:-allowable_client %*} \ 310 %{Zbind_at_load:-bind_at_load} \ 311 %{Zarch_errors_fatal:-arch_errors_fatal} \ 312 %{Zdead_strip:-dead_strip} \ 313 %{Zno_dead_strip_inits_and_terms:-no_dead_strip_inits_and_terms} \ 314 %{Zdylib_file*:-dylib_file %*} \ 315 %{Zdynamic:-dynamic}\ 316 %{Zexported_symbols_list*:-exported_symbols_list %*} \ 317 %{Zflat_namespace:-flat_namespace} \ 318 %{headerpad_max_install_names} \ 319 %{Zimage_base*:-image_base %*} \ 320 %{Zinit*:-init %*} \ 321 %{mmacosx-version-min=*:-macosx_version_min %*} \ 322 %{nomultidefs} \ 323 %{Zmulti_module:-multi_module} %{Zsingle_module:-single_module} \ 324 %{Zmultiply_defined*:-multiply_defined %*} \ 325 %{!Zmultiply_defined*:%{shared-libgcc: \ 326 %:version-compare(< 10.5 mmacosx-version-min= -multiply_defined) \ 327 %:version-compare(< 10.5 mmacosx-version-min= suppress)}} \ 328 %{Zmultiplydefinedunused*:-multiply_defined_unused %*} \ 329 %{prebind} %{noprebind} %{nofixprebinding} %{prebind_all_twolevel_modules} \ 330 %{read_only_relocs} \ 331 %{sectcreate*} %{sectorder*} %{seg1addr*} %{segprot*} \ 332 %{Zsegaddr*:-segaddr %*} \ 333 %{Zsegs_read_only_addr*:-segs_read_only_addr %*} \ 334 %{Zsegs_read_write_addr*:-segs_read_write_addr %*} \ 335 %{Zseg_addr_table*: -seg_addr_table %*} \ 336 %{Zfn_seg_addr_table_filename*:-seg_addr_table_filename %*} \ 337 %{sub_library*} %{sub_umbrella*} \ 338 " LINK_SYSROOT_SPEC " \ 339 %{twolevel_namespace} %{twolevel_namespace_hints} \ 340 %{Zumbrella*: -umbrella %*} \ 341 %{undefined*} \ 342 %{Zunexported_symbols_list*:-unexported_symbols_list %*} \ 343 %{Zweak_reference_mismatches*:-weak_reference_mismatches %*} \ 344 %{!Zweak_reference_mismatches*:-weak_reference_mismatches non-weak} \ 345 %{X} \ 346 %{y*} \ 347 %{w} \ 348 %{pagezero_size*} %{segs_read_*} %{seglinkedit} %{noseglinkedit} \ 349 %{sectalign*} %{sectobjectsymbols*} %{segcreate*} %{whyload} \ 350 %{whatsloaded} %{dylinker_install_name*} \ 351 %{dylinker} %{Mach} " 352 353 354 /* Machine dependent libraries. */ 355 356 #define LIB_SPEC "%{!static:-lSystem}" 357 358 /* Support -mmacosx-version-min by supplying different (stub) libgcc_s.dylib 359 libraries to link against, and by not linking against libgcc_s on 360 earlier-than-10.3.9. If we need exceptions, prior to 10.3.9, then we have 361 to link the static eh lib, since there's no shared version on the system. 362 363 Note that by default, except as above, -lgcc_eh is not linked against. 364 This is because,in general, we need to unwind through system libraries that 365 are linked with the shared unwinder in libunwind (or libgcc_s for 10.4/5). 366 367 The static version of the current libgcc unwinder (which differs from the 368 implementation in libunwind.dylib on systems Darwin10 [10.6]+) can be used 369 by specifying -static-libgcc. 370 371 If libgcc_eh is linked against, it has to be before -lgcc, because it might 372 need symbols from -lgcc. */ 373 374 #undef REAL_LIBGCC_SPEC 375 #define REAL_LIBGCC_SPEC \ 376 "%{static-libgcc|static: -lgcc_eh -lgcc; \ 377 shared-libgcc|fexceptions|fobjc-exceptions|fgnu-runtime: \ 378 %:version-compare(!> 10.3.9 mmacosx-version-min= -lgcc_eh) \ 379 %:version-compare(>< 10.3.9 10.5 mmacosx-version-min= -lgcc_s.10.4) \ 380 %:version-compare(>< 10.5 10.6 mmacosx-version-min= -lgcc_s.10.5) \ 381 %:version-compare(>< 10.3.9 10.5 mmacosx-version-min= -lgcc_ext.10.4) \ 382 %:version-compare(>= 10.5 mmacosx-version-min= -lgcc_ext.10.5) \ 383 -lgcc ; \ 384 :%:version-compare(>< 10.3.9 10.5 mmacosx-version-min= -lgcc_s.10.4) \ 385 %:version-compare(>< 10.5 10.6 mmacosx-version-min= -lgcc_s.10.5) \ 386 %:version-compare(>< 10.3.9 10.5 mmacosx-version-min= -lgcc_ext.10.4) \ 387 %:version-compare(>= 10.5 mmacosx-version-min= -lgcc_ext.10.5) \ 388 -lgcc }" 389 390 /* We specify crt0.o as -lcrt0.o so that ld will search the library path. */ 391 392 #undef STARTFILE_SPEC 393 #define STARTFILE_SPEC \ 394 "%{Zdynamiclib: %(darwin_dylib1) %{fgnu-tm: -lcrttms.o}} \ 395 %{!Zdynamiclib:%{Zbundle:%(darwin_bundle1)} \ 396 %{!Zbundle:%{pg:%{static:-lgcrt0.o} \ 397 %{!static:%{object:-lgcrt0.o} \ 398 %{!object:%{preload:-lgcrt0.o} \ 399 %{!preload:-lgcrt1.o \ 400 %:version-compare(>= 10.8 mmacosx-version-min= -no_new_main) \ 401 %(darwin_crt2)}}}} \ 402 %{!pg:%{static:-lcrt0.o} \ 403 %{!static:%{object:-lcrt0.o} \ 404 %{!object:%{preload:-lcrt0.o} \ 405 %{!preload: %(darwin_crt1) \ 406 %(darwin_crt2)}}}}}} \ 407 %(darwin_crt3)" 408 409 /* We want a destructor last in the list. */ 410 #define TM_DESTRUCTOR "%{fgnu-tm: -lcrttme.o}" 411 #define ENDFILE_SPEC TM_DESTRUCTOR 412 413 #define DARWIN_EXTRA_SPECS \ 414 { "darwin_crt1", DARWIN_CRT1_SPEC }, \ 415 { "darwin_crt2", DARWIN_CRT2_SPEC }, \ 416 { "darwin_crt3", DARWIN_CRT3_SPEC }, \ 417 { "darwin_dylib1", DARWIN_DYLIB1_SPEC }, \ 418 { "darwin_bundle1", DARWIN_BUNDLE1_SPEC }, 419 420 #define DARWIN_CRT1_SPEC \ 421 "%:version-compare(!> 10.5 mmacosx-version-min= -lcrt1.o) \ 422 %:version-compare(>< 10.5 10.6 mmacosx-version-min= -lcrt1.10.5.o) \ 423 %:version-compare(>< 10.6 10.8 mmacosx-version-min= -lcrt1.10.6.o) \ 424 %{fgnu-tm: -lcrttms.o}" 425 426 #define DARWIN_CRT2_SPEC "" 427 428 /* crt3.o provides __cxa_atexit on systems that don't have it (and a fix 429 up for faulty versions on 10.4). Since it's only used with C++, which 430 requires passing -shared-libgcc, key off that to avoid unnecessarily 431 adding a destructor to every program built for 10.4 or earlier. */ 432 433 #define DARWIN_CRT3_SPEC \ 434 "%{shared-libgcc:%:version-compare(< 10.5 mmacosx-version-min= crt3.o%s)}" 435 436 #define DARWIN_DYLIB1_SPEC \ 437 "%:version-compare(!> 10.5 mmacosx-version-min= -ldylib1.o) \ 438 %:version-compare(>< 10.5 10.6 mmacosx-version-min= -ldylib1.10.5.o)" 439 440 #define DARWIN_BUNDLE1_SPEC \ 441 "%{!static:%:version-compare(< 10.6 mmacosx-version-min= -lbundle1.o) \ 442 %{fgnu-tm: -lcrttms.o}}" 443 444 #ifdef HAVE_AS_MMACOSX_VERSION_MIN_OPTION 445 /* Emit macosx version (but only major). */ 446 #define ASM_MMACOSX_VERSION_MIN_SPEC \ 447 " %{asm_macosx_version_min=*: -mmacosx-version-min=%*} %<asm_macosx_version_min=*" 448 #else 449 #define ASM_MMACOSX_VERSION_MIN_SPEC " %<asm_macosx_version_min=*" 450 #endif 451 452 /* When we detect that we're cctools or llvm as, we need to insert the right 453 additional options. */ 454 #if HAVE_GNU_AS 455 #define ASM_OPTIONS "" 456 #else 457 #define ASM_OPTIONS "%{v} %{w:-W} %{I*}" 458 #endif 459 460 /* Default Darwin ASM_SPEC, very simple. */ 461 #define ASM_SPEC "-arch %(darwin_arch) \ 462 " ASM_OPTIONS " \ 463 %{Zforce_cpusubtype_ALL:-force_cpusubtype_ALL} \ 464 %{static}" ASM_MMACOSX_VERSION_MIN_SPEC 465 466 /* Default ASM_DEBUG_SPEC. Darwin's as cannot currently produce dwarf 467 debugging data. */ 468 469 #define ASM_DEBUG_SPEC "%{g*:%{%:debug-level-gt(0):%{!gdwarf*:--gstabs}}}" 470 #define ASM_FINAL_SPEC \ 471 "%{gsplit-dwarf:%ngsplit-dwarf is not supported on this platform} %<gsplit-dwarf" 472 473 /* We still allow output of STABS if the assembler supports it. */ 474 #ifdef HAVE_AS_STABS_DIRECTIVE 475 #define DBX_DEBUGGING_INFO 1 476 #define PREFERRED_DEBUGGING_TYPE DBX_DEBUG 477 #endif 478 479 #define DWARF2_DEBUGGING_INFO 1 480 481 #define DEBUG_FRAME_SECTION "__DWARF,__debug_frame,regular,debug" 482 #define DEBUG_INFO_SECTION "__DWARF,__debug_info,regular,debug" 483 #define DEBUG_ABBREV_SECTION "__DWARF,__debug_abbrev,regular,debug" 484 #define DEBUG_ARANGES_SECTION "__DWARF,__debug_aranges,regular,debug" 485 #define DEBUG_MACINFO_SECTION "__DWARF,__debug_macinfo,regular,debug" 486 #define DEBUG_LINE_SECTION "__DWARF,__debug_line,regular,debug" 487 #define DEBUG_LOC_SECTION "__DWARF,__debug_loc,regular,debug" 488 #define DEBUG_LOCLISTS_SECTION "__DWARF,__debug_loclists,regular,debug" 489 490 #define DEBUG_STR_SECTION "__DWARF,__debug_str,regular,debug" 491 #define DEBUG_STR_OFFSETS_SECTION "__DWARF,__debug_str_offs,regular,debug" 492 #define DEBUG_RANGES_SECTION "__DWARF,__debug_ranges,regular,debug" 493 #define DEBUG_RNGLISTS_SECTION "__DWARF,__debug_rnglists,regular,debug" 494 #define DEBUG_MACRO_SECTION "__DWARF,__debug_macro,regular,debug" 495 496 #define DEBUG_LTO_INFO_SECTION "__GNU_DWARF_LTO,__debug_info,regular,debug" 497 #define DEBUG_LTO_ABBREV_SECTION "__GNU_DWARF_LTO,__debug_abbrev,regular,debug" 498 #define DEBUG_LTO_MACINFO_SECTION "__GNU_DWARF_LTO,__debug_macinfo,regular,debug" 499 #define DEBUG_LTO_LINE_SECTION "__GNU_DWARF_LTO,__debug_line,regular,debug" 500 #define DEBUG_LTO_STR_SECTION "__GNU_DWARF_LTO,__debug_str,regular,debug" 501 #define DEBUG_LTO_MACRO_SECTION "__GNU_DWARF_LTO,__debug_macro,regular,debug" 502 503 #define TARGET_WANT_DEBUG_PUB_SECTIONS true 504 #define DEBUG_PUBNAMES_SECTION ((debug_generate_pub_sections == 2) \ 505 ? "__DWARF,__debug_gnu_pubn,regular,debug" \ 506 : "__DWARF,__debug_pubnames,regular,debug") 507 508 #define DEBUG_PUBTYPES_SECTION ((debug_generate_pub_sections == 2) \ 509 ? "__DWARF,__debug_gnu_pubt,regular,debug" \ 510 : "__DWARF,__debug_pubtypes,regular,debug") 511 512 /* When generating stabs debugging, use N_BINCL entries. */ 513 514 #define DBX_USE_BINCL 515 516 /* There is no limit to the length of stabs strings. */ 517 518 #define DBX_CONTIN_LENGTH 0 519 520 /* gdb needs a null N_SO at the end of each file for scattered loading. */ 521 522 #define DBX_OUTPUT_NULL_N_SO_AT_MAIN_SOURCE_FILE_END 523 524 /* GCC's definition of 'one_only' is the same as its definition of 'weak'. */ 525 #define MAKE_DECL_ONE_ONLY(DECL) (DECL_WEAK (DECL) = 1) 526 527 /* Mach-O supports 'weak imports', and 'weak definitions' in coalesced 528 sections. machopic_select_section ensures that weak variables go in 529 coalesced sections. Weak aliases (or any other kind of aliases) are 530 not supported. Weak symbols that aren't visible outside the .s file 531 are not supported. */ 532 #define ASM_WEAKEN_DECL(FILE, DECL, NAME, ALIAS) \ 533 do { \ 534 if (ALIAS) \ 535 { \ 536 warning (0, "alias definitions not supported in Mach-O; ignored"); \ 537 break; \ 538 } \ 539 \ 540 if (! DECL_EXTERNAL (DECL) && TREE_PUBLIC (DECL)) \ 541 targetm.asm_out.globalize_label (FILE, NAME); \ 542 if (DECL_EXTERNAL (DECL)) \ 543 fputs ("\t.weak_reference ", FILE); \ 544 else if (lookup_attribute ("weak_import", DECL_ATTRIBUTES (DECL))) \ 545 break; \ 546 else if (TREE_PUBLIC (DECL)) \ 547 fputs ("\t.weak_definition ", FILE); \ 548 else \ 549 break; \ 550 assemble_name (FILE, NAME); \ 551 fputc ('\n', FILE); \ 552 } while (0) 553 554 /* Darwin has the pthread routines in libSystem, which every program 555 links to, so there's no need for weak-ness for that. */ 556 #define GTHREAD_USE_WEAK 0 557 558 /* On Darwin, we don't (at the time of writing) have linkonce sections 559 with names, so it's safe to make the class data not comdat. */ 560 #define TARGET_CXX_CLASS_DATA_ALWAYS_COMDAT hook_bool_void_false 561 562 /* For efficiency, on Darwin the RTTI information that is always 563 emitted in the standard C++ library should not be COMDAT. */ 564 #define TARGET_CXX_LIBRARY_RTTI_COMDAT hook_bool_void_false 565 566 /* We make exception information linkonce. */ 567 #undef TARGET_USES_WEAK_UNWIND_INFO 568 #define TARGET_USES_WEAK_UNWIND_INFO 1 569 570 /* We need to use a nonlocal label for the start of an EH frame: the 571 Darwin linker requires that a coalesced section start with a label. 572 Unfortunately, it also requires that 'debug' sections don't contain 573 labels. */ 574 #undef FRAME_BEGIN_LABEL 575 #define FRAME_BEGIN_LABEL (for_eh ? "EH_frame" : "Lframe") 576 577 /* Emit a label for the FDE corresponding to DECL. EMPTY means 578 emit a label for an empty FDE. */ 579 #define TARGET_ASM_EMIT_UNWIND_LABEL darwin_emit_unwind_label 580 581 /* Emit a label to separate the exception table. */ 582 #define TARGET_ASM_EMIT_EXCEPT_TABLE_LABEL darwin_emit_except_table_label 583 584 /* Some of Darwin's unwinders need current frame address state to be reset 585 after a DW_CFA_restore_state recovers the register values. */ 586 #undef TARGET_ASM_SHOULD_RESTORE_CFA_STATE 587 #define TARGET_ASM_SHOULD_RESTORE_CFA_STATE darwin_should_restore_cfa_state 588 589 /* Our profiling scheme doesn't LP labels and counter words. */ 590 591 #define NO_PROFILE_COUNTERS 1 592 593 #undef INIT_SECTION_ASM_OP 594 #define INIT_SECTION_ASM_OP "" 595 596 #undef INVOKE__main 597 598 #define TARGET_ASM_CONSTRUCTOR machopic_asm_out_constructor 599 #define TARGET_ASM_DESTRUCTOR machopic_asm_out_destructor 600 601 /* Always prefix with an underscore. */ 602 603 #define USER_LABEL_PREFIX "_" 604 605 /* A dummy symbol that will be replaced with the function base name. */ 606 #define MACHOPIC_FUNCTION_BASE_NAME "<pic base>" 607 608 /* Don't output a .file directive. That is only used by the assembler for 609 error reporting. */ 610 #undef TARGET_ASM_FILE_START_FILE_DIRECTIVE 611 #define TARGET_ASM_FILE_START_FILE_DIRECTIVE false 612 613 #undef TARGET_ASM_FILE_END 614 #define TARGET_ASM_FILE_END darwin_file_end 615 616 /* Because Mach-O relocations have a counter from 1 to 255 for the 617 section number they apply to, it is necessary to output all 618 normal sections before the LTO sections, to make sure that the 619 sections that may have relocations always have a section number 620 smaller than 255. */ 621 #undef TARGET_ASM_LTO_START 622 #define TARGET_ASM_LTO_START darwin_asm_lto_start 623 #undef TARGET_ASM_LTO_END 624 #define TARGET_ASM_LTO_END darwin_asm_lto_end 625 626 #define ASM_OUTPUT_SKIP(FILE,SIZE) \ 627 fprintf (FILE, "\t.space " HOST_WIDE_INT_PRINT_UNSIGNED"\n", SIZE) 628 629 /* Give ObjC methods pretty symbol names. */ 630 631 #undef OBJC_GEN_METHOD_LABEL 632 #define OBJC_GEN_METHOD_LABEL(BUF,IS_INST,CLASS_NAME,CAT_NAME,SEL_NAME,NUM) \ 633 do { if (CAT_NAME) \ 634 sprintf (BUF, "%c[%s(%s) %s]", (IS_INST) ? '-' : '+', \ 635 (CLASS_NAME), (CAT_NAME), (SEL_NAME)); \ 636 else \ 637 sprintf (BUF, "%c[%s %s]", (IS_INST) ? '-' : '+', \ 638 (CLASS_NAME), (SEL_NAME)); \ 639 } while (0) 640 641 #undef ASM_DECLARE_OBJECT_NAME 642 #define ASM_DECLARE_OBJECT_NAME(FILE, NAME, DECL) \ 643 darwin_asm_declare_object_name ((FILE), (NAME), (DECL)) 644 645 /* The RTTI data (e.g., __ti4name) is common and public (and static), 646 but it does need to be referenced via indirect PIC data pointers. 647 The machopic_define_symbol calls are telling the machopic subsystem 648 that the name *is* defined in this module, so it doesn't need to 649 make them indirect. */ 650 651 #define ASM_DECLARE_FUNCTION_NAME(FILE, NAME, DECL) \ 652 do { \ 653 const char *xname = NAME; \ 654 if (GET_CODE (XEXP (DECL_RTL (DECL), 0)) != SYMBOL_REF) \ 655 xname = IDENTIFIER_POINTER (DECL_NAME (DECL)); \ 656 if (! DECL_WEAK (DECL) \ 657 && ((TREE_STATIC (DECL) \ 658 && (!DECL_COMMON (DECL) || !TREE_PUBLIC (DECL))) \ 659 || DECL_INITIAL (DECL))) \ 660 machopic_define_symbol (DECL_RTL (DECL)); \ 661 if ((TREE_STATIC (DECL) \ 662 && (!DECL_COMMON (DECL) || !TREE_PUBLIC (DECL))) \ 663 || DECL_INITIAL (DECL)) \ 664 (* targetm.encode_section_info) (DECL, DECL_RTL (DECL), false); \ 665 ASM_OUTPUT_FUNCTION_LABEL (FILE, xname, DECL); \ 666 } while (0) 667 668 #undef TARGET_ASM_DECLARE_CONSTANT_NAME 669 #define TARGET_ASM_DECLARE_CONSTANT_NAME darwin_asm_declare_constant_name 670 671 /* Wrap new method names in quotes so the assembler doesn't gag. 672 Make Objective-C internal symbols local and in doing this, we need 673 to accommodate the name mangling done by c++ on file scope locals. */ 674 675 int darwin_label_is_anonymous_local_objc_name (const char *name); 676 677 #undef ASM_OUTPUT_LABELREF 678 #define ASM_OUTPUT_LABELREF(FILE,NAME) \ 679 do { \ 680 const char *xname = (NAME); \ 681 if (! strcmp (xname, MACHOPIC_FUNCTION_BASE_NAME)) \ 682 machopic_output_function_base_name(FILE); \ 683 else if (xname[0] == '&' || xname[0] == '*') \ 684 { \ 685 int len = strlen (xname); \ 686 if (len > 6 && !strcmp ("$stub", xname + len - 5)) \ 687 machopic_validate_stub_or_non_lazy_ptr (xname); \ 688 else if (len > 7 && !strcmp ("$stub\"", xname + len - 6)) \ 689 machopic_validate_stub_or_non_lazy_ptr (xname); \ 690 else if (len > 14 && !strcmp ("$non_lazy_ptr", xname + len - 13)) \ 691 machopic_validate_stub_or_non_lazy_ptr (xname); \ 692 else if (len > 15 && !strcmp ("$non_lazy_ptr\"", xname + len - 14)) \ 693 machopic_validate_stub_or_non_lazy_ptr (xname); \ 694 if (xname[1] != '"' && name_needs_quotes (&xname[1])) \ 695 fprintf (FILE, "\"%s\"", &xname[1]); \ 696 else \ 697 fputs (&xname[1], FILE); \ 698 } \ 699 else if (xname[0] == '+' || xname[0] == '-') \ 700 fprintf (FILE, "\"%s\"", xname); \ 701 else if (darwin_label_is_anonymous_local_objc_name (xname)) \ 702 fprintf (FILE, "L%s", xname); \ 703 else if (xname[0] != '"' && name_needs_quotes (xname)) \ 704 asm_fprintf (FILE, "\"%U%s\"", xname); \ 705 else \ 706 asm_fprintf (FILE, "%U%s", xname); \ 707 } while (0) 708 709 /* Output before executable code. */ 710 #undef TEXT_SECTION_ASM_OP 711 #define TEXT_SECTION_ASM_OP "\t.text" 712 713 /* Output before writable data. */ 714 715 #undef DATA_SECTION_ASM_OP 716 #define DATA_SECTION_ASM_OP "\t.data" 717 718 #undef ALIGN_ASM_OP 719 #define ALIGN_ASM_OP ".align" 720 721 #undef ASM_OUTPUT_ALIGN 722 #define ASM_OUTPUT_ALIGN(FILE,LOG) \ 723 if ((LOG) != 0) \ 724 fprintf (FILE, "\t%s\t%d\n", ALIGN_ASM_OP, (LOG)) 725 726 /* The maximum alignment which the object file format can support in 727 bits. For Mach-O, this is 2^15 bytes. */ 728 729 #undef MAX_OFILE_ALIGNMENT 730 #define MAX_OFILE_ALIGNMENT (0x8000 * 8) 731 732 #define L2_MAX_OFILE_ALIGNMENT 15 733 734 /* These are the three variants that emit referenced blank space. */ 735 #define ASM_OUTPUT_ALIGNED_BSS(FILE, DECL, NAME, SIZE, ALIGN) \ 736 darwin_output_aligned_bss ((FILE), (DECL), (NAME), (SIZE), (ALIGN)) 737 738 #undef ASM_OUTPUT_ALIGNED_DECL_LOCAL 739 #define ASM_OUTPUT_ALIGNED_DECL_LOCAL(FILE, DECL, NAME, SIZE, ALIGN) \ 740 darwin_asm_output_aligned_decl_local \ 741 ((FILE), (DECL), (NAME), (SIZE), (ALIGN)) 742 743 #undef ASM_OUTPUT_ALIGNED_DECL_COMMON 744 #define ASM_OUTPUT_ALIGNED_DECL_COMMON(FILE, DECL, NAME, SIZE, ALIGN) \ 745 darwin_asm_output_aligned_decl_common \ 746 ((FILE), (DECL), (NAME), (SIZE), (ALIGN)) 747 748 /* The generic version, archs should over-ride where required. */ 749 #define MACHOPIC_NL_SYMBOL_PTR_SECTION ".non_lazy_symbol_pointer" 750 751 /* Declare the section variables. */ 752 #ifndef USED_FOR_TARGET 753 enum darwin_section_enum { 754 #define DEF_SECTION(NAME, FLAGS, DIRECTIVE, OBJC) NAME, 755 #include "darwin-sections.def" 756 #undef DEF_SECTION 757 NUM_DARWIN_SECTIONS 758 }; 759 extern GTY(()) section * darwin_sections[NUM_DARWIN_SECTIONS]; 760 #endif 761 762 #undef TARGET_ASM_SELECT_SECTION 763 #define TARGET_ASM_SELECT_SECTION machopic_select_section 764 765 #undef TARGET_ASM_FUNCTION_SECTION 766 #define TARGET_ASM_FUNCTION_SECTION darwin_function_section 767 768 #undef TARGET_ASM_SELECT_RTX_SECTION 769 #define TARGET_ASM_SELECT_RTX_SECTION machopic_select_rtx_section 770 #undef TARGET_ASM_UNIQUE_SECTION 771 #define TARGET_ASM_UNIQUE_SECTION darwin_unique_section 772 #undef TARGET_ASM_FUNCTION_RODATA_SECTION 773 #define TARGET_ASM_FUNCTION_RODATA_SECTION default_no_function_rodata_section 774 775 #undef TARGET_ASM_TM_CLONE_TABLE_SECTION 776 #define TARGET_ASM_TM_CLONE_TABLE_SECTION darwin_tm_clone_table_section 777 778 #undef TARGET_ASM_RELOC_RW_MASK 779 #define TARGET_ASM_RELOC_RW_MASK machopic_reloc_rw_mask 780 781 /* Globalizing directive for a label. */ 782 #define GLOBAL_ASM_OP "\t.globl " 783 #define TARGET_ASM_GLOBALIZE_LABEL darwin_globalize_label 784 785 /* Emit an assembler directive to set visibility for a symbol. Used 786 to support visibility attribute and Darwin's private extern 787 feature. */ 788 #undef TARGET_ASM_ASSEMBLE_VISIBILITY 789 #define TARGET_ASM_ASSEMBLE_VISIBILITY darwin_assemble_visibility 790 791 /* Extra attributes for Darwin. */ 792 #define SUBTARGET_ATTRIBUTE_TABLE \ 793 /* { name, min_len, max_len, decl_req, type_req, fn_type_req, \ 794 affects_type_identity, handler, exclude } */ \ 795 { "apple_kext_compatibility", 0, 0, false, true, false, false, \ 796 darwin_handle_kext_attribute, NULL }, \ 797 { "weak_import", 0, 0, true, false, false, false, \ 798 darwin_handle_weak_import_attribute, NULL } 799 800 /* Make local constant labels linker-visible, so that if one follows a 801 weak_global constant, ld64 will be able to separate the atoms. */ 802 #undef ASM_GENERATE_INTERNAL_LABEL 803 #define ASM_GENERATE_INTERNAL_LABEL(LABEL,PREFIX,NUM) \ 804 do { \ 805 if (strcmp ("LC", PREFIX) == 0) \ 806 sprintf (LABEL, "*%s%ld", "lC", (long)(NUM)); \ 807 else if (strcmp ("Lubsan_data", PREFIX) == 0) \ 808 sprintf (LABEL, "*%s%ld", "lubsan_data", (long)(NUM));\ 809 else if (strcmp ("Lubsan_type", PREFIX) == 0) \ 810 sprintf (LABEL, "*%s%ld", "lubsan_type", (long)(NUM));\ 811 else if (strcmp ("LASAN", PREFIX) == 0) \ 812 sprintf (LABEL, "*%s%ld", "lASAN", (long)(NUM));\ 813 else \ 814 sprintf (LABEL, "*%s%ld", PREFIX, (long)(NUM)); \ 815 } while (0) 816 817 #undef TARGET_ASM_MARK_DECL_PRESERVED 818 #define TARGET_ASM_MARK_DECL_PRESERVED darwin_mark_decl_preserved 819 820 /* Any port using this header needs to define the first available 821 subtarget symbol bit: SYMBOL_FLAG_SUBT_DEP. */ 822 823 /* Is a variable. */ 824 #define MACHO_SYMBOL_FLAG_VARIABLE (SYMBOL_FLAG_SUBT_DEP) 825 #define MACHO_SYMBOL_VARIABLE_P(RTX) \ 826 ((SYMBOL_REF_FLAGS (RTX) & MACHO_SYMBOL_FLAG_VARIABLE) != 0) 827 828 /* Set on a symbol that must be indirected, even when there is a 829 definition in the TU. The ABI mandates that common symbols are so 830 indirected, as are weak. If 'fix-and-continue' is operational then 831 data symbols might also be. */ 832 833 #define MACHO_SYMBOL_FLAG_MUST_INDIRECT ((SYMBOL_FLAG_SUBT_DEP) << 1) 834 #define MACHO_SYMBOL_MUST_INDIRECT_P(RTX) \ 835 ((SYMBOL_REF_FLAGS (RTX) & MACHO_SYMBOL_FLAG_MUST_INDIRECT) != 0) 836 837 /* Set on a symbol with SYMBOL_FLAG_FUNCTION or MACHO_SYMBOL_FLAG_VARIABLE 838 to indicate that the function or variable is considered defined in this 839 translation unit. */ 840 841 #define MACHO_SYMBOL_FLAG_DEFINED ((SYMBOL_FLAG_SUBT_DEP) << 2) 842 #define MACHO_SYMBOL_DEFINED_P(RTX) \ 843 ((SYMBOL_REF_FLAGS (RTX) & MACHO_SYMBOL_FLAG_DEFINED) != 0) 844 845 /* Set on a symbol that has specified non-default visibility. */ 846 847 #define MACHO_SYMBOL_FLAG_HIDDEN_VIS ((SYMBOL_FLAG_SUBT_DEP) << 3) 848 #define MACHO_SYMBOL_HIDDEN_VIS_P(RTX) \ 849 ((SYMBOL_REF_FLAGS (RTX) & MACHO_SYMBOL_FLAG_HIDDEN_VIS) != 0) 850 851 /* Set on a symbol that is a pic stub or symbol indirection (i.e. the 852 L_xxxxx${stub,non_lazy_ptr,lazy_ptr}. */ 853 854 #define MACHO_SYMBOL_FLAG_INDIRECTION ((SYMBOL_FLAG_SUBT_DEP) << 5) 855 #define MACHO_SYMBOL_INDIRECTION_P(RTX) \ 856 ((SYMBOL_REF_FLAGS (RTX) & MACHO_SYMBOL_FLAG_INDIRECTION) != 0) 857 858 /* Set on a symbol to indicate when fix-and-continue style code 859 generation is being used and the symbol refers to a static symbol 860 that should be rebound from new instances of a translation unit to 861 the original instance of the data. */ 862 863 #define MACHO_SYMBOL_FLAG_STATIC ((SYMBOL_FLAG_SUBT_DEP) << 6) 864 #define MACHO_SYMBOL_STATIC_P(RTX) \ 865 ((SYMBOL_REF_FLAGS (RTX) & MACHO_SYMBOL_FLAG_STATIC) != 0) 866 867 /* Symbolic names for various things we might know about a symbol. */ 868 869 enum machopic_addr_class { 870 MACHOPIC_UNDEFINED, 871 MACHOPIC_DEFINED_DATA, 872 MACHOPIC_UNDEFINED_DATA, 873 MACHOPIC_DEFINED_FUNCTION, 874 MACHOPIC_UNDEFINED_FUNCTION 875 }; 876 877 /* Macros defining the various PIC cases. */ 878 879 #undef MACHO_DYNAMIC_NO_PIC_P 880 #define MACHO_DYNAMIC_NO_PIC_P (TARGET_MACHO_DYNAMIC_NO_PIC) 881 #undef MACHOPIC_INDIRECT 882 #define MACHOPIC_INDIRECT (flag_pic || MACHO_DYNAMIC_NO_PIC_P) 883 #define MACHOPIC_JUST_INDIRECT (MACHO_DYNAMIC_NO_PIC_P) 884 #undef MACHOPIC_PURE 885 #define MACHOPIC_PURE (flag_pic && ! MACHO_DYNAMIC_NO_PIC_P) 886 887 #undef TARGET_ENCODE_SECTION_INFO 888 #define TARGET_ENCODE_SECTION_INFO darwin_encode_section_info 889 #undef TARGET_STRIP_NAME_ENCODING 890 #define TARGET_STRIP_NAME_ENCODING default_strip_name_encoding 891 892 #define GEN_BINDER_NAME_FOR_STUB(BUF,STUB,STUB_LENGTH) \ 893 do { \ 894 const char *const stub_ = (STUB); \ 895 char *buffer_ = (BUF); \ 896 strcpy (buffer_, stub_); \ 897 if (stub_[0] == '"') \ 898 { \ 899 strcpy (buffer_ + (STUB_LENGTH) - 1, "_binder\""); \ 900 } \ 901 else \ 902 { \ 903 strcpy (buffer_ + (STUB_LENGTH), "_binder"); \ 904 } \ 905 } while (0) 906 907 #define GEN_SYMBOL_NAME_FOR_SYMBOL(BUF,SYMBOL,SYMBOL_LENGTH) \ 908 do { \ 909 const char *const symbol_ = (SYMBOL); \ 910 char *buffer_ = (BUF); \ 911 if (name_needs_quotes (symbol_) && symbol_[0] != '"') \ 912 { \ 913 sprintf (buffer_, "\"%s\"", symbol_); \ 914 } \ 915 else \ 916 { \ 917 strcpy (buffer_, symbol_); \ 918 } \ 919 } while (0) 920 921 /* Given a symbol name string, create the lazy pointer version 922 of the symbol name. */ 923 924 #define GEN_LAZY_PTR_NAME_FOR_SYMBOL(BUF,SYMBOL,SYMBOL_LENGTH) \ 925 do { \ 926 const char *symbol_ = (SYMBOL); \ 927 char *buffer_ = (BUF); \ 928 if (symbol_[0] == '"') \ 929 { \ 930 strcpy (buffer_, "\"L"); \ 931 strcpy (buffer_ + 2, symbol_ + 1); \ 932 strcpy (buffer_ + (SYMBOL_LENGTH), "$lazy_ptr\""); \ 933 } \ 934 else if (name_needs_quotes (symbol_)) \ 935 { \ 936 strcpy (buffer_, "\"L"); \ 937 strcpy (buffer_ + 2, symbol_); \ 938 strcpy (buffer_ + (SYMBOL_LENGTH) + 2, "$lazy_ptr\""); \ 939 } \ 940 else \ 941 { \ 942 strcpy (buffer_, "L"); \ 943 strcpy (buffer_ + 1, symbol_); \ 944 strcpy (buffer_ + (SYMBOL_LENGTH) + 1, "$lazy_ptr"); \ 945 } \ 946 } while (0) 947 948 #define EH_FRAME_SECTION_NAME "__TEXT" 949 #define EH_FRAME_SECTION_ATTR ",coalesced,no_toc+strip_static_syms+live_support" 950 951 #undef ASM_PREFERRED_EH_DATA_FORMAT 952 #define ASM_PREFERRED_EH_DATA_FORMAT(CODE,GLOBAL) \ 953 (((CODE) == 2 && (GLOBAL) == 1) \ 954 ? (DW_EH_PE_pcrel | DW_EH_PE_indirect | DW_EH_PE_sdata4) : \ 955 ((CODE) == 1 || (GLOBAL) == 0) ? DW_EH_PE_pcrel : DW_EH_PE_absptr) 956 957 #define ASM_OUTPUT_DWARF_DELTA(FILE,SIZE,LABEL1,LABEL2) \ 958 darwin_asm_output_dwarf_delta (FILE, SIZE, LABEL1, LABEL2, 0) 959 960 #define ASM_OUTPUT_DWARF_OFFSET(FILE,SIZE,LABEL,OFFSET,BASE) \ 961 darwin_asm_output_dwarf_offset (FILE, SIZE, LABEL, OFFSET, BASE) 962 963 #define ASM_MAYBE_OUTPUT_ENCODED_ADDR_RTX(ASM_OUT_FILE, ENCODING, SIZE, ADDR, DONE) \ 964 if (ENCODING == ASM_PREFERRED_EH_DATA_FORMAT (2, 1)) { \ 965 darwin_non_lazy_pcrel (ASM_OUT_FILE, ADDR); \ 966 goto DONE; \ 967 } 968 969 /* Experimentally, putting jump tables in text is faster on SPEC. 970 Also this is needed for correctness for coalesced functions. */ 971 972 #ifndef JUMP_TABLES_IN_TEXT_SECTION 973 #define JUMP_TABLES_IN_TEXT_SECTION 1 974 #endif 975 976 #define TARGET_TERMINATE_DW2_EH_FRAME_INFO false 977 978 #define TARGET_ASM_INIT_SECTIONS darwin_init_sections 979 #undef TARGET_ASM_NAMED_SECTION 980 #define TARGET_ASM_NAMED_SECTION darwin_asm_named_section 981 982 #define DARWIN_REGISTER_TARGET_PRAGMAS() \ 983 do { \ 984 if (!flag_preprocess_only) \ 985 cpp_register_pragma (parse_in, NULL, "mark", \ 986 darwin_pragma_ignore, false); \ 987 c_register_pragma (0, "options", darwin_pragma_options); \ 988 c_register_pragma (0, "segment", darwin_pragma_ignore); \ 989 c_register_pragma (0, "unused", darwin_pragma_unused); \ 990 c_register_pragma (0, "ms_struct", darwin_pragma_ms_struct); \ 991 } while (0) 992 993 #undef ASM_APP_ON 994 #define ASM_APP_ON "" 995 #undef ASM_APP_OFF 996 #define ASM_APP_OFF "" 997 998 void darwin_register_frameworks (const char *, const char *, int); 999 void darwin_register_objc_includes (const char *, const char *, int); 1000 #define TARGET_EXTRA_PRE_INCLUDES darwin_register_objc_includes 1001 #define TARGET_EXTRA_INCLUDES darwin_register_frameworks 1002 1003 void add_framework_path (char *); 1004 #define TARGET_OPTF add_framework_path 1005 1006 #define TARGET_POSIX_IO 1007 1008 #define WINT_TYPE "int" 1009 1010 /* Every program on darwin links against libSystem which contains the pthread 1011 routines, so there's no need to explicitly call out when doing threaded 1012 work. */ 1013 1014 #undef GOMP_SELF_SPECS 1015 #define GOMP_SELF_SPECS "" 1016 #undef GTM_SELF_SPECS 1017 #define GTM_SELF_SPECS "" 1018 1019 /* Darwin disables section anchors by default. 1020 They should be enabled per arch where support exists in that arch. */ 1021 #define TARGET_ASM_OUTPUT_ANCHOR NULL 1022 #define DARWIN_SECTION_ANCHORS 0 1023 1024 #define HAVE_ENABLE_EXECUTE_STACK 1025 1026 /* For Apple KEXTs, we make the constructors return this to match gcc 1027 2.95. */ 1028 #define TARGET_CXX_CDTOR_RETURNS_THIS (darwin_kextabi_p) 1029 #define TARGET_KEXTABI flag_apple_kext 1030 1031 /* We have target-specific builtins. */ 1032 #define SUBTARGET_FOLD_BUILTIN darwin_fold_builtin 1033 1034 #define TARGET_N_FORMAT_TYPES 1 1035 #define TARGET_FORMAT_TYPES darwin_additional_format_types 1036 1037 #ifndef USED_FOR_TARGET 1038 extern void darwin_driver_init (unsigned int *,struct cl_decoded_option **); 1039 #define GCC_DRIVER_HOST_INITIALIZATION \ 1040 darwin_driver_init (&decoded_options_count, &decoded_options) 1041 #endif 1042 1043 /* The Apple assembler and linker do not support constructor priorities. */ 1044 #undef SUPPORTS_INIT_PRIORITY 1045 #define SUPPORTS_INIT_PRIORITY 0 1046 1047 /* When building cross-compilers (and native crosses) we shall default to 1048 providing an osx-version-min of this unless overridden by the User. 1049 10.5 is the only version that fully supports all our archs so that's the 1050 fall-back default. */ 1051 #define DEF_MIN_OSX_VERSION "10.5" 1052 1053 /* Later versions of ld64 support coalescing weak code/data without requiring 1054 that they be placed in specially identified sections. This is the earliest 1055 _tested_ version known to support this so far. */ 1056 #define MIN_LD64_NO_COAL_SECTS "236.4" 1057 1058 /* From at least version 62.1, ld64 can build symbol indirection stubs as 1059 needed, and there is no need for the compiler to emit them. */ 1060 #define MIN_LD64_OMIT_STUBS "85.2" 1061 1062 #ifndef LD64_VERSION 1063 #define LD64_VERSION "62.1" 1064 #else 1065 #define DEF_LD64 LD64_VERSION 1066 #endif 1067 1068 #endif /* CONFIG_DARWIN_H */ 1069