1 /* Target definitions for Darwin (Mac OS X) systems. 2 Copyright (C) 1989-2021 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 100508 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 /* The majority of Darwin's special driver opts are direct access to ld flags 122 (to save the user typing -Wl,xxxxx or Xlinker xxxxx) but we can't process 123 them here, since doing so will make it appear that there are linker infiles 124 and the linker will invoked even when it is not necessary. 125 126 However, a few can be handled and we can elide options that are silently- 127 ignored defaults, plus warn on obsolete ones that no longer function. */ 128 #undef SUBTARGET_DRIVER_SELF_SPECS 129 #define SUBTARGET_DRIVER_SELF_SPECS \ 130 "%{fapple-kext|mkernel:-static}", \ 131 "%{gfull:-g -fno-eliminate-unused-debug-symbols} %<gfull", \ 132 "%{gsplit-dwarf:%ngsplit-dwarf is not supported on this platform} \ 133 %<gsplit-dwarf", \ 134 "%{gused:-g -feliminate-unused-debug-symbols} %<gused", \ 135 "%{shared:-Zdynamiclib} %<shared", \ 136 "%{static:%{Zdynamic:%e conflicting code gen style switches are used}}",\ 137 "%{y*:%nthe y option is obsolete and ignored} %<y*", \ 138 "%<Mach " 139 140 #if LD64_HAS_EXPORT_DYNAMIC 141 #define DARWIN_RDYNAMIC "%{rdynamic:-export_dynamic}" 142 #else 143 #define DARWIN_RDYNAMIC "%{rdynamic:%nrdynamic is not supported}" 144 #endif 145 146 /* FIXME: we should check that the linker supports the -pie and -no_pie. 147 options. */ 148 #define DARWIN_PIE_SPEC \ 149 "%{pie|fpie|fPIE:\ 150 %{mdynamic-no-pic: \ 151 %n'-mdynamic-no-pic' overrides '-pie', '-fpie' or '-fPIE'; \ 152 :%:version-compare(>= 10.5 mmacosx-version-min= -pie) }} " 153 154 #define DARWIN_NOPIE_SPEC \ 155 "%{no-pie|fno-pie|fno-PIE: \ 156 %:version-compare(>= 10.7 mmacosx-version-min= -no_pie) }" 157 158 #define DARWIN_CC1_SPEC \ 159 "%{findirect-virtual-calls: -fapple-kext} %<findirect-virtual-calls " \ 160 "%{fterminated-vtables: -fapple-kext} %<fterminated-vtables " \ 161 "%<filelist* %<framework*" 162 163 #define SUBSUBTARGET_OVERRIDE_OPTIONS \ 164 do { \ 165 darwin_override_options (); \ 166 } while (0) 167 168 #define SUBTARGET_C_COMMON_OVERRIDE_OPTIONS do { \ 169 if (flag_mkernel || flag_apple_kext) \ 170 { \ 171 if (flag_use_cxa_atexit == 2) \ 172 flag_use_cxa_atexit = 0; \ 173 /* kexts should always be built without the coalesced sections \ 174 because the kernel loader doesn't grok such sections. */ \ 175 flag_weak = 0; \ 176 /* No RTTI in kexts. */ \ 177 flag_rtti = 0; \ 178 } \ 179 } while (0) 180 181 /* Machine dependent cpp options. Don't add more options here, add 182 them to darwin_cpp_builtins in darwin-c.c. */ 183 184 #undef CPP_SPEC 185 #define CPP_SPEC "%{static:%{!dynamic:-D__STATIC__}}%{!static:-D__DYNAMIC__}" \ 186 " %{pthread:-D_REENTRANT}" 187 188 /* This is a fix for PR41260 by passing -no_compact_unwind on darwin10 and 189 later until the assembler, linker and libunwind are able to deal with the 190 output from GCC. 191 192 FIXME: we should check that the linker supports the option. 193 */ 194 195 #define DARWIN_NOCOMPACT_UNWIND \ 196 " %:version-compare(>= 10.6 mmacosx-version-min= -no_compact_unwind) " 197 198 /* In Darwin linker specs we can put -lcrt0.o and ld will search the library 199 path for crt0.o or -lcrtx.a and it will search for for libcrtx.a. As for 200 other ports, we can also put xxx.{o,a}%s and get the appropriate complete 201 startfile absolute directory. This latter point is important when we want 202 to override ld's rule of .dylib being found ahead of .a and the user wants 203 the convenience library to be linked. */ 204 205 /* The LINK_COMMAND spec is mostly a clone of the standard LINK_COMMAND_SPEC, 206 plus precomp, libtool, and fat build additions. 207 208 In general, random Darwin linker flags should go into LINK_SPEC 209 instead of LINK_COMMAND_SPEC. The command spec is better for 210 specifying the handling of options understood by generic Unix 211 linkers, and for positional arguments like libraries. */ 212 213 #define LINK_COMMAND_SPEC_A \ 214 "%{!fdump=*:%{!fsyntax-only:%{!c:%{!M:%{!MM:%{!E:%{!S:\ 215 %(linker)" \ 216 LINK_PLUGIN_SPEC \ 217 "%{flto*:%<fcompare-debug*} \ 218 %{flto} %{fno-lto} %{flto=*} \ 219 %l " LINK_COMPRESS_DEBUG_SPEC \ 220 "%X %{s} %{t} %{Z} %{u*} \ 221 %{e*} %{r} \ 222 %{o*}%{!o:-o a.out} \ 223 %{!nostdlib:%{!r:%{!nostartfiles:%S}}} \ 224 %{L*} %(link_libgcc) %o %{fprofile-arcs|fprofile-generate*|coverage:-lgcov} \ 225 %{fopenacc|fopenmp|%:gt(%{ftree-parallelize-loops=*:%*} 1): \ 226 %{static|static-libgcc|static-libstdc++|static-libgfortran: libgomp.a%s; : -lgomp } } \ 227 %{fgnu-tm: \ 228 %{static|static-libgcc|static-libstdc++|static-libgfortran: libitm.a%s; : -litm } } \ 229 %{!nostdlib:%{!r:%{!nodefaultlibs:\ 230 %{%:sanitize(address): -lasan } \ 231 %{%:sanitize(undefined): -lubsan } \ 232 %(link_ssp) \ 233 %:version-compare(>< 10.6 10.7 mmacosx-version-min= -ld10-uwfef.o) \ 234 %(link_gcc_c_sequence) \ 235 }}}\ 236 %{!nostdlib:%{!r:%{!nostartfiles:%E}}} %{T*} %{F*} "\ 237 DARWIN_PIE_SPEC \ 238 DARWIN_NOPIE_SPEC \ 239 DARWIN_RDYNAMIC \ 240 DARWIN_NOCOMPACT_UNWIND \ 241 "}}}}}}} %<pie %<no-pie %<rdynamic %<X " 242 243 #define DSYMUTIL "\ndsymutil" 244 245 /* Spec that controls whether the debug linker is run automatically for 246 a link step. This needs to be done if there is a source file on the 247 command line which will result in a temporary object (and debug is 248 enabled). */ 249 250 #define DSYMUTIL_SPEC \ 251 "%{!fdump=*:%{!fsyntax-only:%{!c:%{!M:%{!MM:%{!E:%{!S:\ 252 %{v} \ 253 %{g*:%{!gstabs*:%{%:debug-level-gt(0): -idsym}}}\ 254 %{.c|.cc|.C|.cpp|.cp|.c++|.cxx|.CPP|.m|.mm|.s|.f|.f90|\ 255 .f95|.f03|.f77|.for|.F|.F90|.F95|.F03: \ 256 %{g*:%{!gstabs*:%{%:debug-level-gt(0): -dsym}}}}}}}}}}}" 257 258 #define LINK_COMMAND_SPEC LINK_COMMAND_SPEC_A DSYMUTIL_SPEC 259 260 /* Tell collect2 to run dsymutil for us as necessary. */ 261 #define COLLECT_RUN_DSYMUTIL 1 262 263 /* Fix PR47558 by linking against libSystem ahead of libgcc. See also 264 PR 80556 and the fallout from this. */ 265 266 #undef LINK_GCC_C_SEQUENCE_SPEC 267 #define LINK_GCC_C_SEQUENCE_SPEC \ 268 "%{!static:%{!static-libgcc: \ 269 %:version-compare(>= 10.6 mmacosx-version-min= -lSystem) } } \ 270 %G %{!nolibc:%L}" 271 272 /* ld64 supports a sysroot, it just has a different name and there's no easy 273 way to check for it at config time. */ 274 #undef HAVE_LD_SYSROOT 275 #define HAVE_LD_SYSROOT 1 276 /* It seems the only (working) way to get a space after %R is to append a 277 dangling '/'. */ 278 #define SYSROOT_SPEC "%{!isysroot*:-syslibroot %R/ }" 279 280 /* Do the same as clang, for now, and insert the sysroot for ld when an 281 isysroot is specified. */ 282 #define LINK_SYSROOT_SPEC "%{isysroot*:-syslibroot %*}" 283 284 /* Suppress the addition of extra prefix paths when a sysroot is in use. */ 285 #define STANDARD_STARTFILE_PREFIX_1 "" 286 #define STANDARD_STARTFILE_PREFIX_2 "" 287 288 /* Please keep the random linker options in alphabetical order (modulo 289 'Z' and 'no' prefixes). Note that options taking arguments may appear 290 multiple times on a command line with different arguments each time, 291 so put a * after their names so all of them get passed. */ 292 #define LINK_SPEC \ 293 "%{static}%{!static:-dynamic} \ 294 %:remove-outfile(-ldl) \ 295 %:remove-outfile(-lm) \ 296 %:remove-outfile(-lpthread) \ 297 %{fgnu-runtime: %{static|static-libgcc: \ 298 %:replace-outfile(-lobjc libobjc-gnu.a%s); \ 299 :%:replace-outfile(-lobjc -lobjc-gnu ) } }\ 300 %{static|static-libgcc|static-libgfortran:%:replace-outfile(-lgfortran libgfortran.a%s)}\ 301 %{static|static-libgcc|static-libstdc++|static-libgfortran:%:replace-outfile(-lgomp libgomp.a%s)}\ 302 %{static|static-libgcc|static-libstdc++:%:replace-outfile(-lstdc++ libstdc++.a%s)}\ 303 %{!Zdynamiclib: \ 304 %{Zforce_cpusubtype_ALL:-arch %(darwin_arch) -force_cpusubtype_ALL} \ 305 %{!Zforce_cpusubtype_ALL:-arch %(darwin_subarch)} \ 306 %{Zbundle:-bundle} \ 307 %{Zbundle_loader*:-bundle_loader %*} \ 308 %{client_name*} \ 309 %{compatibility_version*:%e-compatibility_version only allowed with -dynamiclib\ 310 } \ 311 %{current_version*:%e-current_version only allowed with -dynamiclib} \ 312 %{Zforce_flat_namespace:-force_flat_namespace} \ 313 %{Zinstall_name*:%e-install_name only allowed with -dynamiclib} \ 314 %{keep_private_externs} \ 315 %{private_bundle} \ 316 } \ 317 %{Zdynamiclib: -dylib \ 318 %{Zbundle:%e-bundle not allowed with -dynamiclib} \ 319 %{Zbundle_loader*:%e-bundle_loader not allowed with -dynamiclib} \ 320 %{client_name*:%e-client_name not allowed with -dynamiclib} \ 321 %{compatibility_version*:-dylib_compatibility_version %*} \ 322 %{current_version*:-dylib_current_version %*} \ 323 %{Zforce_cpusubtype_ALL:-arch %(darwin_arch)} \ 324 %{!Zforce_cpusubtype_ALL: -arch %(darwin_subarch)} \ 325 %{Zforce_flat_namespace:%e-force_flat_namespace not allowed with -dynamiclib} \ 326 %{Zinstall_name*:-dylib_install_name %*} \ 327 %{keep_private_externs:%e-keep_private_externs not allowed with -dynamiclib} \ 328 %{private_bundle:%e-private_bundle not allowed with -dynamiclib} \ 329 } \ 330 %{Zall_load:-all_load} \ 331 %{Zallowable_client*:-allowable_client %*} \ 332 %{Zbind_at_load:-bind_at_load} \ 333 %{Zarch_errors_fatal:-arch_errors_fatal} \ 334 %{Zdead_strip:-dead_strip} \ 335 %{Zno_dead_strip_inits_and_terms:-no_dead_strip_inits_and_terms} \ 336 %{Zdylib_file*:-dylib_file %*} \ 337 %{Zdynamic:-dynamic}\ 338 %{Zexported_symbols_list*:-exported_symbols_list %*} \ 339 %{Zflat_namespace:-flat_namespace} \ 340 %{headerpad_max_install_names} \ 341 %{Zimage_base*:-image_base %*} \ 342 %{Zinit*:-init %*} \ 343 %{mmacosx-version-min=*:-macosx_version_min %*} \ 344 %{nomultidefs} \ 345 %{Zmulti_module:-multi_module} %{Zsingle_module:-single_module} \ 346 %{Zmultiply_defined*:-multiply_defined %*} \ 347 %{!Zmultiply_defined*:%{shared-libgcc: \ 348 %:version-compare(< 10.5 mmacosx-version-min= -multiply_defined) \ 349 %:version-compare(< 10.5 mmacosx-version-min= suppress)}} \ 350 %{Zmultiplydefinedunused*:-multiply_defined_unused %*} \ 351 %{prebind} %{noprebind} %{nofixprebinding} %{prebind_all_twolevel_modules} \ 352 %{read_only_relocs} \ 353 %{sectcreate*} %{sectorder*} %{seg1addr*} %{segprot*} \ 354 %{Zsegaddr*:-segaddr %*} \ 355 %{Zsegs_read_only_addr*:-segs_read_only_addr %*} \ 356 %{Zsegs_read_write_addr*:-segs_read_write_addr %*} \ 357 %{Zseg_addr_table*: -seg_addr_table %*} \ 358 %{Zfn_seg_addr_table_filename*:-seg_addr_table_filename %*} \ 359 %{sub_library*} %{sub_umbrella*} \ 360 " LINK_SYSROOT_SPEC " \ 361 %{twolevel_namespace} %{twolevel_namespace_hints} \ 362 %{Zumbrella*: -umbrella %*} \ 363 %{undefined*} \ 364 %{Zunexported_symbols_list*:-unexported_symbols_list %*} \ 365 %{Zweak_reference_mismatches*:-weak_reference_mismatches %*} \ 366 %{!Zweak_reference_mismatches*:-weak_reference_mismatches non-weak} \ 367 %{w} \ 368 %{pagezero_size*} %{segs_read_*} %{seglinkedit} %{noseglinkedit} \ 369 %{sectalign*} %{sectobjectsymbols*} %{segcreate*} %{whyload} \ 370 %{whatsloaded} %{dylinker_install_name*} \ 371 %{dylinker} " 372 373 374 /* Machine dependent libraries. */ 375 376 #define LIB_SPEC "%{!static:-lSystem}" 377 378 /* Support -mmacosx-version-min by supplying different (stub) libgcc_s.dylib 379 libraries to link against, and by not linking against libgcc_s on 380 earlier-than-10.3.9. If we need exceptions, prior to 10.3.9, then we have 381 to link the static eh lib, since there's no shared version on the system. 382 383 Note that by default, except as above, -lgcc_eh is not linked against. 384 This is because,in general, we need to unwind through system libraries that 385 are linked with the shared unwinder in libunwind (or libgcc_s for 10.4/5). 386 387 The static version of the current libgcc unwinder (which differs from the 388 implementation in libunwind.dylib on systems Darwin10 [10.6]+) can be used 389 by specifying -static-libgcc. 390 391 If libgcc_eh is linked against, it has to be before -lgcc, because it might 392 need symbols from -lgcc. */ 393 394 #undef REAL_LIBGCC_SPEC 395 #define REAL_LIBGCC_SPEC \ 396 "%{static-libgcc|static: -lgcc_eh -lgcc; \ 397 shared-libgcc|fexceptions|fobjc-exceptions|fgnu-runtime: \ 398 %:version-compare(!> 10.3.9 mmacosx-version-min= -lgcc_eh) \ 399 %:version-compare(>< 10.3.9 10.5 mmacosx-version-min= -lgcc_s.10.4) \ 400 %:version-compare(>< 10.5 10.6 mmacosx-version-min= -lgcc_s.10.5) \ 401 %:version-compare(>< 10.3.9 10.5 mmacosx-version-min= -lgcc_ext.10.4) \ 402 %:version-compare(>= 10.5 mmacosx-version-min= -lgcc_ext.10.5) \ 403 -lgcc ; \ 404 :%:version-compare(>< 10.3.9 10.5 mmacosx-version-min= -lgcc_s.10.4) \ 405 %:version-compare(>< 10.5 10.6 mmacosx-version-min= -lgcc_s.10.5) \ 406 %:version-compare(>< 10.3.9 10.5 mmacosx-version-min= -lgcc_ext.10.4) \ 407 %:version-compare(>= 10.5 mmacosx-version-min= -lgcc_ext.10.5) \ 408 -lgcc }" 409 410 /* We specify crt0.o as -lcrt0.o so that ld will search the library path. */ 411 412 #undef STARTFILE_SPEC 413 #define STARTFILE_SPEC \ 414 "%{Zdynamiclib: %(darwin_dylib1) %{fgnu-tm: -lcrttms.o}} \ 415 %{!Zdynamiclib:%{Zbundle:%(darwin_bundle1)} \ 416 %{!Zbundle:%{pg:%{static:-lgcrt0.o} \ 417 %{!static:%{object:-lgcrt0.o} \ 418 %{!object:%{preload:-lgcrt0.o} \ 419 %{!preload:-lgcrt1.o \ 420 %:version-compare(>= 10.8 mmacosx-version-min= -no_new_main) \ 421 %(darwin_crt2)}}}} \ 422 %{!pg:%{static:-lcrt0.o} \ 423 %{!static:%{object:-lcrt0.o} \ 424 %{!object:%{preload:-lcrt0.o} \ 425 %{!preload: %(darwin_crt1) \ 426 %(darwin_crt2)}}}}}} \ 427 %(darwin_crt3)" 428 429 /* We want a destructor last in the list. */ 430 #define TM_DESTRUCTOR "%{fgnu-tm: -lcrttme.o}" 431 #define ENDFILE_SPEC TM_DESTRUCTOR 432 433 #define DARWIN_EXTRA_SPECS \ 434 { "darwin_crt1", DARWIN_CRT1_SPEC }, \ 435 { "darwin_crt2", DARWIN_CRT2_SPEC }, \ 436 { "darwin_crt3", DARWIN_CRT3_SPEC }, \ 437 { "darwin_dylib1", DARWIN_DYLIB1_SPEC }, \ 438 { "darwin_bundle1", DARWIN_BUNDLE1_SPEC }, 439 440 #define DARWIN_CRT1_SPEC \ 441 "%:version-compare(!> 10.5 mmacosx-version-min= -lcrt1.o) \ 442 %:version-compare(>< 10.5 10.6 mmacosx-version-min= -lcrt1.10.5.o) \ 443 %:version-compare(>< 10.6 10.8 mmacosx-version-min= -lcrt1.10.6.o) \ 444 %{fgnu-tm: -lcrttms.o}" 445 446 #define DARWIN_CRT2_SPEC "" 447 448 /* crt3.o provides __cxa_atexit on systems that don't have it (and a fix 449 up for faulty versions on 10.4). Since it's only used with C++, which 450 requires passing -shared-libgcc, key off that to avoid unnecessarily 451 adding a destructor to every program built for 10.4 or earlier. */ 452 453 #define DARWIN_CRT3_SPEC \ 454 "%{shared-libgcc:%:version-compare(< 10.5 mmacosx-version-min= crt3.o%s)}" 455 456 #define DARWIN_DYLIB1_SPEC \ 457 "%:version-compare(!> 10.5 mmacosx-version-min= -ldylib1.o) \ 458 %:version-compare(>< 10.5 10.6 mmacosx-version-min= -ldylib1.10.5.o)" 459 460 #define DARWIN_BUNDLE1_SPEC \ 461 "%{!static:%:version-compare(< 10.6 mmacosx-version-min= -lbundle1.o) \ 462 %{fgnu-tm: -lcrttms.o}}" 463 464 #ifdef HAVE_AS_MMACOSX_VERSION_MIN_OPTION 465 /* Emit macosx version (but only major). */ 466 #define ASM_MMACOSX_VERSION_MIN_SPEC \ 467 " %{asm_macosx_version_min=*: -mmacosx-version-min=%*} %<asm_macosx_version_min=*" 468 #else 469 #define ASM_MMACOSX_VERSION_MIN_SPEC " %<asm_macosx_version_min=*" 470 #endif 471 472 /* When we detect that we're cctools or llvm as, we need to insert the right 473 additional options. */ 474 #if HAVE_GNU_AS 475 #define ASM_OPTIONS "" 476 #else 477 #define ASM_OPTIONS "%{v} %{w:-W} %{I*}" 478 #endif 479 480 /* Default Darwin ASM_SPEC, very simple. */ 481 #define ASM_SPEC "-arch %(darwin_arch) \ 482 " ASM_OPTIONS " \ 483 %{Zforce_cpusubtype_ALL:-force_cpusubtype_ALL} \ 484 %{static}" ASM_MMACOSX_VERSION_MIN_SPEC 485 486 #ifdef HAVE_AS_STABS_DIRECTIVE 487 /* We only pass a debug option to the assembler if that supports stabs, since 488 dwarf is not uniformly supported in the assemblers. */ 489 #define ASM_DEBUG_SPEC "%{g*:%{%:debug-level-gt(0):%{!gdwarf*:--gstabs}}}" 490 #else 491 #define ASM_DEBUG_SPEC "" 492 #endif 493 494 #undef ASM_DEBUG_OPTION_SPEC 495 #define ASM_DEBUG_OPTION_SPEC "" 496 497 #define ASM_FINAL_SPEC \ 498 "%{gsplit-dwarf:%ngsplit-dwarf is not supported on this platform} %<gsplit-dwarf" 499 500 /* We now require C++11 to bootstrap and newer tools than those based on 501 stabs, so require DWARF-2, even if stabs is supported by the assembler. */ 502 503 #define PREFERRED_DEBUGGING_TYPE DWARF2_DEBUG 504 #define DARWIN_PREFER_DWARF 505 #define DWARF2_DEBUGGING_INFO 1 506 507 #ifdef HAVE_AS_STABS_DIRECTIVE 508 #define DBX_DEBUGGING_INFO 1 509 #endif 510 511 #define DEBUG_FRAME_SECTION "__DWARF,__debug_frame,regular,debug" 512 #define DEBUG_INFO_SECTION "__DWARF,__debug_info,regular,debug" 513 #define DEBUG_ABBREV_SECTION "__DWARF,__debug_abbrev,regular,debug" 514 #define DEBUG_ARANGES_SECTION "__DWARF,__debug_aranges,regular,debug" 515 #define DEBUG_MACINFO_SECTION "__DWARF,__debug_macinfo,regular,debug" 516 #define DEBUG_LINE_SECTION "__DWARF,__debug_line,regular,debug" 517 #define DEBUG_LOC_SECTION "__DWARF,__debug_loc,regular,debug" 518 #define DEBUG_LOCLISTS_SECTION "__DWARF,__debug_loclists,regular,debug" 519 520 #define DEBUG_STR_SECTION "__DWARF,__debug_str,regular,debug" 521 #define DEBUG_STR_OFFSETS_SECTION "__DWARF,__debug_str_offs,regular,debug" 522 #define DEBUG_RANGES_SECTION "__DWARF,__debug_ranges,regular,debug" 523 #define DEBUG_RNGLISTS_SECTION "__DWARF,__debug_rnglists,regular,debug" 524 #define DEBUG_MACRO_SECTION "__DWARF,__debug_macro,regular,debug" 525 526 #define DEBUG_LTO_INFO_SECTION "__GNU_DWARF_LTO,__debug_info,regular,debug" 527 #define DEBUG_LTO_ABBREV_SECTION "__GNU_DWARF_LTO,__debug_abbrev,regular,debug" 528 #define DEBUG_LTO_MACINFO_SECTION "__GNU_DWARF_LTO,__debug_macinfo,regular,debug" 529 #define DEBUG_LTO_LINE_SECTION "__GNU_DWARF_LTO,__debug_line,regular,debug" 530 #define DEBUG_LTO_STR_SECTION "__GNU_DWARF_LTO,__debug_str,regular,debug" 531 #define DEBUG_LTO_MACRO_SECTION "__GNU_DWARF_LTO,__debug_macro,regular,debug" 532 533 #define TARGET_WANT_DEBUG_PUB_SECTIONS true 534 #define DEBUG_PUBNAMES_SECTION ((debug_generate_pub_sections == 2) \ 535 ? "__DWARF,__debug_gnu_pubn,regular,debug" \ 536 : "__DWARF,__debug_pubnames,regular,debug") 537 538 #define DEBUG_PUBTYPES_SECTION ((debug_generate_pub_sections == 2) \ 539 ? "__DWARF,__debug_gnu_pubt,regular,debug" \ 540 : "__DWARF,__debug_pubtypes,regular,debug") 541 542 /* When generating stabs debugging, use N_BINCL entries. */ 543 544 #define DBX_USE_BINCL 545 546 /* There is no limit to the length of stabs strings. */ 547 548 #define DBX_CONTIN_LENGTH 0 549 550 /* gdb needs a null N_SO at the end of each file for scattered loading. */ 551 552 #define DBX_OUTPUT_NULL_N_SO_AT_MAIN_SOURCE_FILE_END 553 554 /* GCC's definition of 'one_only' is the same as its definition of 'weak'. */ 555 #define MAKE_DECL_ONE_ONLY(DECL) (DECL_WEAK (DECL) = 1) 556 557 /* Mach-O supports 'weak imports', and 'weak definitions' in coalesced 558 sections. machopic_select_section ensures that weak variables go in 559 coalesced sections. Weak aliases (or any other kind of aliases) are 560 not supported. Weak symbols that aren't visible outside the .s file 561 are not supported. */ 562 #define ASM_WEAKEN_DECL(FILE, DECL, NAME, ALIAS) \ 563 do { \ 564 if (ALIAS) \ 565 { \ 566 warning (0, "alias definitions not supported in Mach-O; ignored"); \ 567 break; \ 568 } \ 569 \ 570 if (! DECL_EXTERNAL (DECL) && TREE_PUBLIC (DECL)) \ 571 targetm.asm_out.globalize_label (FILE, NAME); \ 572 if (DECL_EXTERNAL (DECL)) \ 573 fputs ("\t.weak_reference ", FILE); \ 574 else if (lookup_attribute ("weak_import", DECL_ATTRIBUTES (DECL))) \ 575 break; \ 576 else if (TREE_PUBLIC (DECL)) \ 577 fputs ("\t.weak_definition ", FILE); \ 578 else \ 579 break; \ 580 assemble_name (FILE, NAME); \ 581 fputc ('\n', FILE); \ 582 } while (0) 583 584 /* Darwin has the pthread routines in libSystem, which every program 585 links to, so there's no need for weak-ness for that. */ 586 #define GTHREAD_USE_WEAK 0 587 588 /* On Darwin, we don't (at the time of writing) have linkonce sections 589 with names, so it's safe to make the class data not comdat. */ 590 #define TARGET_CXX_CLASS_DATA_ALWAYS_COMDAT hook_bool_void_false 591 592 /* For efficiency, on Darwin the RTTI information that is always 593 emitted in the standard C++ library should not be COMDAT. */ 594 #define TARGET_CXX_LIBRARY_RTTI_COMDAT hook_bool_void_false 595 596 /* We make exception information linkonce. */ 597 #undef TARGET_USES_WEAK_UNWIND_INFO 598 #define TARGET_USES_WEAK_UNWIND_INFO 1 599 600 /* We need to use a nonlocal label for the start of an EH frame: the 601 Darwin linker requires that a coalesced section start with a label. 602 Unfortunately, it also requires that 'debug' sections don't contain 603 labels. */ 604 #undef FRAME_BEGIN_LABEL 605 #define FRAME_BEGIN_LABEL (for_eh ? "EH_frame" : "Lframe") 606 607 /* Emit a label for the FDE corresponding to DECL. EMPTY means 608 emit a label for an empty FDE. */ 609 #define TARGET_ASM_EMIT_UNWIND_LABEL darwin_emit_unwind_label 610 611 /* Emit a label to separate the exception table. */ 612 #define TARGET_ASM_EMIT_EXCEPT_TABLE_LABEL darwin_emit_except_table_label 613 614 /* Make an EH (personality or LDSA) symbol indirect as needed. */ 615 #define TARGET_ASM_MAKE_EH_SYMBOL_INDIRECT darwin_make_eh_symbol_indirect 616 617 /* Some of Darwin's unwinders need current frame address state to be reset 618 after a DW_CFA_restore_state recovers the register values. */ 619 #undef TARGET_ASM_SHOULD_RESTORE_CFA_STATE 620 #define TARGET_ASM_SHOULD_RESTORE_CFA_STATE darwin_should_restore_cfa_state 621 622 /* Our profiling scheme doesn't LP labels and counter words. */ 623 624 #define NO_PROFILE_COUNTERS 1 625 626 #undef INIT_SECTION_ASM_OP 627 #define INIT_SECTION_ASM_OP "" 628 629 #undef INVOKE__main 630 631 #define TARGET_ASM_CONSTRUCTOR machopic_asm_out_constructor 632 #define TARGET_ASM_DESTRUCTOR machopic_asm_out_destructor 633 634 /* Always prefix with an underscore. */ 635 636 #define USER_LABEL_PREFIX "_" 637 638 /* A dummy symbol that will be replaced with the function base name. */ 639 #define MACHOPIC_FUNCTION_BASE_NAME "<pic base>" 640 641 /* Don't output a .file directive. That is only used by the assembler for 642 error reporting. */ 643 #undef TARGET_ASM_FILE_START_FILE_DIRECTIVE 644 #define TARGET_ASM_FILE_START_FILE_DIRECTIVE false 645 646 #undef TARGET_ASM_FILE_END 647 #define TARGET_ASM_FILE_END darwin_file_end 648 649 /* Because Mach-O relocations have a counter from 1 to 255 for the 650 section number they apply to, it is necessary to output all 651 normal sections before the LTO sections, to make sure that the 652 sections that may have relocations always have a section number 653 smaller than 255. */ 654 #undef TARGET_ASM_LTO_START 655 #define TARGET_ASM_LTO_START darwin_asm_lto_start 656 #undef TARGET_ASM_LTO_END 657 #define TARGET_ASM_LTO_END darwin_asm_lto_end 658 659 #define ASM_OUTPUT_SKIP(FILE,SIZE) \ 660 fprintf (FILE, "\t.space " HOST_WIDE_INT_PRINT_UNSIGNED"\n", SIZE) 661 662 /* Give ObjC methods pretty symbol names. */ 663 664 #undef OBJC_GEN_METHOD_LABEL 665 #define OBJC_GEN_METHOD_LABEL(BUF,IS_INST,CLASS_NAME,CAT_NAME,SEL_NAME,NUM) \ 666 do { if (CAT_NAME) \ 667 sprintf (BUF, "%c[%s(%s) %s]", (IS_INST) ? '-' : '+', \ 668 (CLASS_NAME), (CAT_NAME), (SEL_NAME)); \ 669 else \ 670 sprintf (BUF, "%c[%s %s]", (IS_INST) ? '-' : '+', \ 671 (CLASS_NAME), (SEL_NAME)); \ 672 } while (0) 673 674 #undef ASM_DECLARE_OBJECT_NAME 675 #define ASM_DECLARE_OBJECT_NAME(FILE, NAME, DECL) \ 676 darwin_asm_declare_object_name ((FILE), (NAME), (DECL)) 677 678 /* The RTTI data (e.g., __ti4name) is common and public (and static), 679 but it does need to be referenced via indirect PIC data pointers. 680 The machopic_define_symbol calls are telling the machopic subsystem 681 that the name *is* defined in this module, so it doesn't need to 682 make them indirect. */ 683 684 #undef ASM_DECLARE_FUNCTION_NAME 685 #define ASM_DECLARE_FUNCTION_NAME(FILE, NAME, DECL) \ 686 do { \ 687 const char *xname = NAME; \ 688 if (GET_CODE (XEXP (DECL_RTL (DECL), 0)) != SYMBOL_REF) \ 689 xname = IDENTIFIER_POINTER (DECL_NAME (DECL)); \ 690 if (! DECL_WEAK (DECL) \ 691 && ((TREE_STATIC (DECL) \ 692 && (!DECL_COMMON (DECL) || !TREE_PUBLIC (DECL))) \ 693 || DECL_INITIAL (DECL))) \ 694 machopic_define_symbol (DECL_RTL (DECL)); \ 695 if ((TREE_STATIC (DECL) \ 696 && (!DECL_COMMON (DECL) || !TREE_PUBLIC (DECL))) \ 697 || DECL_INITIAL (DECL)) \ 698 (* targetm.encode_section_info) (DECL, DECL_RTL (DECL), false); \ 699 ASM_OUTPUT_FUNCTION_LABEL (FILE, xname, DECL); \ 700 } while (0) 701 702 #undef TARGET_ASM_DECLARE_CONSTANT_NAME 703 #define TARGET_ASM_DECLARE_CONSTANT_NAME darwin_asm_declare_constant_name 704 705 /* Wrap new method names in quotes so the assembler doesn't gag. 706 Make Objective-C internal symbols local and in doing this, we need 707 to accommodate the name mangling done by c++ on file scope locals. */ 708 709 int darwin_label_is_anonymous_local_objc_name (const char *name); 710 711 #undef ASM_OUTPUT_LABELREF 712 #define ASM_OUTPUT_LABELREF(FILE,NAME) \ 713 do { \ 714 const char *xname = (NAME); \ 715 if (! strcmp (xname, MACHOPIC_FUNCTION_BASE_NAME)) \ 716 machopic_output_function_base_name(FILE); \ 717 else if (xname[0] == '&' || xname[0] == '*') \ 718 { \ 719 int len = strlen (xname); \ 720 if (len > 6 && !strcmp ("$stub", xname + len - 5)) \ 721 machopic_validate_stub_or_non_lazy_ptr (xname); \ 722 else if (len > 7 && !strcmp ("$stub\"", xname + len - 6)) \ 723 machopic_validate_stub_or_non_lazy_ptr (xname); \ 724 else if (len > 14 && !strcmp ("$non_lazy_ptr", xname + len - 13)) \ 725 machopic_validate_stub_or_non_lazy_ptr (xname); \ 726 else if (len > 15 && !strcmp ("$non_lazy_ptr\"", xname + len - 14)) \ 727 machopic_validate_stub_or_non_lazy_ptr (xname); \ 728 if (xname[1] != '"' && name_needs_quotes (&xname[1])) \ 729 fprintf (FILE, "\"%s\"", &xname[1]); \ 730 else \ 731 fputs (&xname[1], FILE); \ 732 } \ 733 else if (xname[0] == '+' || xname[0] == '-') \ 734 fprintf (FILE, "\"%s\"", xname); \ 735 else if (darwin_label_is_anonymous_local_objc_name (xname)) \ 736 fprintf (FILE, "L%s", xname); \ 737 else if (xname[0] != '"' && name_needs_quotes (xname)) \ 738 asm_fprintf (FILE, "\"%U%s\"", xname); \ 739 else \ 740 asm_fprintf (FILE, "%U%s", xname); \ 741 } while (0) 742 743 /* Output before executable code. */ 744 #undef TEXT_SECTION_ASM_OP 745 #define TEXT_SECTION_ASM_OP "\t.text" 746 747 /* Output before writable data. */ 748 749 #undef DATA_SECTION_ASM_OP 750 #define DATA_SECTION_ASM_OP "\t.data" 751 752 #undef ALIGN_ASM_OP 753 #define ALIGN_ASM_OP ".align" 754 755 #undef ASM_OUTPUT_ALIGN 756 #define ASM_OUTPUT_ALIGN(FILE,LOG) \ 757 if ((LOG) != 0) \ 758 fprintf (FILE, "\t%s\t%d\n", ALIGN_ASM_OP, (LOG)) 759 760 /* The maximum alignment which the object file format can support in 761 bits. For Mach-O, this is 2^15 bytes. */ 762 763 #undef MAX_OFILE_ALIGNMENT 764 #define MAX_OFILE_ALIGNMENT (0x8000 * 8) 765 766 #define L2_MAX_OFILE_ALIGNMENT 15 767 768 /* These are the three variants that emit referenced blank space. */ 769 #define ASM_OUTPUT_ALIGNED_BSS(FILE, DECL, NAME, SIZE, ALIGN) \ 770 darwin_output_aligned_bss ((FILE), (DECL), (NAME), (SIZE), (ALIGN)) 771 772 #undef ASM_OUTPUT_ALIGNED_DECL_LOCAL 773 #define ASM_OUTPUT_ALIGNED_DECL_LOCAL(FILE, DECL, NAME, SIZE, ALIGN) \ 774 darwin_asm_output_aligned_decl_local \ 775 ((FILE), (DECL), (NAME), (SIZE), (ALIGN)) 776 777 #undef ASM_OUTPUT_ALIGNED_DECL_COMMON 778 #define ASM_OUTPUT_ALIGNED_DECL_COMMON(FILE, DECL, NAME, SIZE, ALIGN) \ 779 darwin_asm_output_aligned_decl_common \ 780 ((FILE), (DECL), (NAME), (SIZE), (ALIGN)) 781 782 /* The generic version, archs should over-ride where required. */ 783 #define MACHOPIC_NL_SYMBOL_PTR_SECTION ".non_lazy_symbol_pointer" 784 785 /* Declare the section variables. */ 786 #ifndef USED_FOR_TARGET 787 enum darwin_section_enum { 788 #define DEF_SECTION(NAME, FLAGS, DIRECTIVE, OBJC) NAME, 789 #include "darwin-sections.def" 790 #undef DEF_SECTION 791 NUM_DARWIN_SECTIONS 792 }; 793 extern GTY(()) section * darwin_sections[NUM_DARWIN_SECTIONS]; 794 #endif 795 796 #undef TARGET_ASM_SELECT_SECTION 797 #define TARGET_ASM_SELECT_SECTION machopic_select_section 798 799 #undef TARGET_ASM_FUNCTION_SECTION 800 #define TARGET_ASM_FUNCTION_SECTION darwin_function_section 801 802 #undef TARGET_ASM_SELECT_RTX_SECTION 803 #define TARGET_ASM_SELECT_RTX_SECTION machopic_select_rtx_section 804 #undef TARGET_ASM_UNIQUE_SECTION 805 #define TARGET_ASM_UNIQUE_SECTION darwin_unique_section 806 #undef TARGET_ASM_FUNCTION_RODATA_SECTION 807 #define TARGET_ASM_FUNCTION_RODATA_SECTION default_no_function_rodata_section 808 809 #undef TARGET_ASM_TM_CLONE_TABLE_SECTION 810 #define TARGET_ASM_TM_CLONE_TABLE_SECTION darwin_tm_clone_table_section 811 812 #undef TARGET_ASM_RELOC_RW_MASK 813 #define TARGET_ASM_RELOC_RW_MASK machopic_reloc_rw_mask 814 815 /* Globalizing directive for a label. */ 816 #define GLOBAL_ASM_OP "\t.globl " 817 #define TARGET_ASM_GLOBALIZE_LABEL darwin_globalize_label 818 819 /* Emit an assembler directive to set visibility for a symbol. Used 820 to support visibility attribute and Darwin's private extern 821 feature. */ 822 #undef TARGET_ASM_ASSEMBLE_VISIBILITY 823 #define TARGET_ASM_ASSEMBLE_VISIBILITY darwin_assemble_visibility 824 825 /* Extra attributes for Darwin. */ 826 #define SUBTARGET_ATTRIBUTE_TABLE \ 827 /* { name, min_len, max_len, decl_req, type_req, fn_type_req, \ 828 affects_type_identity, handler, exclude } */ \ 829 { "apple_kext_compatibility", 0, 0, false, true, false, false, \ 830 darwin_handle_kext_attribute, NULL }, \ 831 { "weak_import", 0, 0, true, false, false, false, \ 832 darwin_handle_weak_import_attribute, NULL } 833 834 /* Make local constant labels linker-visible, so that if one follows a 835 weak_global constant, ld64 will be able to separate the atoms. */ 836 #undef ASM_GENERATE_INTERNAL_LABEL 837 #define ASM_GENERATE_INTERNAL_LABEL(LABEL,PREFIX,NUM) \ 838 do { \ 839 if (strcmp ("LC", PREFIX) == 0) \ 840 sprintf (LABEL, "*%s%ld", "lC", (long)(NUM)); \ 841 else if (strcmp ("Lubsan_data", PREFIX) == 0) \ 842 sprintf (LABEL, "*%s%ld", "lubsan_data", (long)(NUM));\ 843 else if (strcmp ("Lubsan_type", PREFIX) == 0) \ 844 sprintf (LABEL, "*%s%ld", "lubsan_type", (long)(NUM));\ 845 else if (strcmp ("LASAN", PREFIX) == 0) \ 846 sprintf (LABEL, "*%s%ld", "lASAN", (long)(NUM));\ 847 else \ 848 sprintf (LABEL, "*%s%ld", PREFIX, (long)(NUM)); \ 849 } while (0) 850 851 #undef TARGET_ASM_MARK_DECL_PRESERVED 852 #define TARGET_ASM_MARK_DECL_PRESERVED darwin_mark_decl_preserved 853 854 /* Any port using this header needs to define the first available 855 subtarget symbol bit: SYMBOL_FLAG_SUBT_DEP. */ 856 857 /* Is a variable. */ 858 #define MACHO_SYMBOL_FLAG_VARIABLE (SYMBOL_FLAG_SUBT_DEP) 859 #define MACHO_SYMBOL_VARIABLE_P(RTX) \ 860 ((SYMBOL_REF_FLAGS (RTX) & MACHO_SYMBOL_FLAG_VARIABLE) != 0) 861 862 /* Set on a symbol that must be indirected, even when there is a 863 definition in the TU. The ABI mandates that common symbols are so 864 indirected, as are weak. If 'fix-and-continue' is operational then 865 data symbols might also be. */ 866 867 #define MACHO_SYMBOL_FLAG_MUST_INDIRECT ((SYMBOL_FLAG_SUBT_DEP) << 1) 868 #define MACHO_SYMBOL_MUST_INDIRECT_P(RTX) \ 869 ((SYMBOL_REF_FLAGS (RTX) & MACHO_SYMBOL_FLAG_MUST_INDIRECT) != 0) 870 871 /* Set on a symbol with SYMBOL_FLAG_FUNCTION or MACHO_SYMBOL_FLAG_VARIABLE 872 to indicate that the function or variable is considered defined in this 873 translation unit. */ 874 875 #define MACHO_SYMBOL_FLAG_DEFINED ((SYMBOL_FLAG_SUBT_DEP) << 2) 876 #define MACHO_SYMBOL_DEFINED_P(RTX) \ 877 ((SYMBOL_REF_FLAGS (RTX) & MACHO_SYMBOL_FLAG_DEFINED) != 0) 878 879 /* Set on a symbol that has specified non-default visibility. */ 880 881 #define MACHO_SYMBOL_FLAG_HIDDEN_VIS ((SYMBOL_FLAG_SUBT_DEP) << 3) 882 #define MACHO_SYMBOL_HIDDEN_VIS_P(RTX) \ 883 ((SYMBOL_REF_FLAGS (RTX) & MACHO_SYMBOL_FLAG_HIDDEN_VIS) != 0) 884 885 /* Set on a symbol that should be made visible to the linker (overriding 886 'L' symbol prefixes). */ 887 888 #define MACHO_SYMBOL_FLAG_LINKER_VIS ((SYMBOL_FLAG_SUBT_DEP) << 4) 889 #define MACHO_SYMBOL_LINKER_VIS_P(RTX) \ 890 ((SYMBOL_REF_FLAGS (RTX) & MACHO_SYMBOL_FLAG_LINKER_VIS) != 0) 891 892 /* Set on a symbol that is a pic stub or symbol indirection (i.e. the 893 L_xxxxx${stub,non_lazy_ptr,lazy_ptr}. */ 894 895 #define MACHO_SYMBOL_FLAG_INDIRECTION ((SYMBOL_FLAG_SUBT_DEP) << 5) 896 #define MACHO_SYMBOL_INDIRECTION_P(RTX) \ 897 ((SYMBOL_REF_FLAGS (RTX) & MACHO_SYMBOL_FLAG_INDIRECTION) != 0) 898 899 /* Set on a symbol to indicate when fix-and-continue style code 900 generation is being used and the symbol refers to a static symbol 901 that should be rebound from new instances of a translation unit to 902 the original instance of the data. */ 903 904 #define MACHO_SYMBOL_FLAG_STATIC ((SYMBOL_FLAG_SUBT_DEP) << 6) 905 #define MACHO_SYMBOL_STATIC_P(RTX) \ 906 ((SYMBOL_REF_FLAGS (RTX) & MACHO_SYMBOL_FLAG_STATIC) != 0) 907 908 /* Symbolic names for various things we might know about a symbol. */ 909 910 enum machopic_addr_class { 911 MACHOPIC_UNDEFINED, 912 MACHOPIC_DEFINED_DATA, 913 MACHOPIC_UNDEFINED_DATA, 914 MACHOPIC_DEFINED_FUNCTION, 915 MACHOPIC_UNDEFINED_FUNCTION 916 }; 917 918 /* Macros defining the various PIC cases. */ 919 920 #undef MACHO_DYNAMIC_NO_PIC_P 921 #define MACHO_DYNAMIC_NO_PIC_P (TARGET_MACHO_DYNAMIC_NO_PIC) 922 #undef MACHOPIC_INDIRECT 923 #define MACHOPIC_INDIRECT (flag_pic || MACHO_DYNAMIC_NO_PIC_P) 924 #define MACHOPIC_JUST_INDIRECT (MACHO_DYNAMIC_NO_PIC_P) 925 #undef MACHOPIC_PURE 926 #define MACHOPIC_PURE (flag_pic && ! MACHO_DYNAMIC_NO_PIC_P) 927 928 #undef TARGET_ENCODE_SECTION_INFO 929 #define TARGET_ENCODE_SECTION_INFO darwin_encode_section_info 930 #undef TARGET_STRIP_NAME_ENCODING 931 #define TARGET_STRIP_NAME_ENCODING default_strip_name_encoding 932 933 #define GEN_BINDER_NAME_FOR_STUB(BUF,STUB,STUB_LENGTH) \ 934 do { \ 935 const char *const stub_ = (STUB); \ 936 char *buffer_ = (BUF); \ 937 strcpy (buffer_, stub_); \ 938 if (stub_[0] == '"') \ 939 { \ 940 strcpy (buffer_ + (STUB_LENGTH) - 1, "_binder\""); \ 941 } \ 942 else \ 943 { \ 944 strcpy (buffer_ + (STUB_LENGTH), "_binder"); \ 945 } \ 946 } while (0) 947 948 #define GEN_SYMBOL_NAME_FOR_SYMBOL(BUF,SYMBOL,SYMBOL_LENGTH) \ 949 do { \ 950 const char *const symbol_ = (SYMBOL); \ 951 char *buffer_ = (BUF); \ 952 if (name_needs_quotes (symbol_) && symbol_[0] != '"') \ 953 { \ 954 sprintf (buffer_, "\"%s\"", symbol_); \ 955 } \ 956 else \ 957 { \ 958 strcpy (buffer_, symbol_); \ 959 } \ 960 } while (0) 961 962 /* Given a symbol name string, create the lazy pointer version 963 of the symbol name. */ 964 965 #define GEN_LAZY_PTR_NAME_FOR_SYMBOL(BUF,SYMBOL,SYMBOL_LENGTH) \ 966 do { \ 967 const char *symbol_ = (SYMBOL); \ 968 char *buffer_ = (BUF); \ 969 if (symbol_[0] == '"') \ 970 { \ 971 strcpy (buffer_, "\"L"); \ 972 strcpy (buffer_ + 2, symbol_ + 1); \ 973 strcpy (buffer_ + (SYMBOL_LENGTH), "$lazy_ptr\""); \ 974 } \ 975 else if (name_needs_quotes (symbol_)) \ 976 { \ 977 strcpy (buffer_, "\"L"); \ 978 strcpy (buffer_ + 2, symbol_); \ 979 strcpy (buffer_ + (SYMBOL_LENGTH) + 2, "$lazy_ptr\""); \ 980 } \ 981 else \ 982 { \ 983 strcpy (buffer_, "L"); \ 984 strcpy (buffer_ + 1, symbol_); \ 985 strcpy (buffer_ + (SYMBOL_LENGTH) + 1, "$lazy_ptr"); \ 986 } \ 987 } while (0) 988 989 #define EH_FRAME_SECTION_NAME "__TEXT" 990 #define EH_FRAME_SECTION_ATTR ",coalesced,no_toc+strip_static_syms+live_support" 991 992 #undef ASM_PREFERRED_EH_DATA_FORMAT 993 #define ASM_PREFERRED_EH_DATA_FORMAT(CODE,GLOBAL) \ 994 (((CODE) == 2 && (GLOBAL) == 1) \ 995 ? (DW_EH_PE_pcrel | DW_EH_PE_indirect | DW_EH_PE_sdata4) : \ 996 ((CODE) == 1 || (GLOBAL) == 0) ? DW_EH_PE_pcrel : DW_EH_PE_absptr) 997 998 #define ASM_OUTPUT_DWARF_DELTA(FILE,SIZE,LABEL1,LABEL2) \ 999 darwin_asm_output_dwarf_delta (FILE, SIZE, LABEL1, LABEL2, 0) 1000 1001 #define ASM_OUTPUT_DWARF_OFFSET(FILE,SIZE,LABEL,OFFSET,BASE) \ 1002 darwin_asm_output_dwarf_offset (FILE, SIZE, LABEL, OFFSET, BASE) 1003 1004 #define ASM_MAYBE_OUTPUT_ENCODED_ADDR_RTX(ASM_OUT_FILE, ENCODING, SIZE, ADDR, DONE) \ 1005 if (ENCODING == ASM_PREFERRED_EH_DATA_FORMAT (2, 1)) { \ 1006 darwin_non_lazy_pcrel (ASM_OUT_FILE, ADDR); \ 1007 goto DONE; \ 1008 } 1009 1010 /* Experimentally, putting jump tables in text is faster on SPEC. 1011 Also this is needed for correctness for coalesced functions. */ 1012 1013 #ifndef JUMP_TABLES_IN_TEXT_SECTION 1014 #define JUMP_TABLES_IN_TEXT_SECTION 1 1015 #endif 1016 1017 #define TARGET_TERMINATE_DW2_EH_FRAME_INFO false 1018 1019 #define TARGET_ASM_INIT_SECTIONS darwin_init_sections 1020 #undef TARGET_ASM_NAMED_SECTION 1021 #define TARGET_ASM_NAMED_SECTION darwin_asm_named_section 1022 1023 #define DARWIN_REGISTER_TARGET_PRAGMAS() \ 1024 do { \ 1025 if (!flag_preprocess_only) \ 1026 cpp_register_pragma (parse_in, NULL, "mark", \ 1027 darwin_pragma_ignore, false); \ 1028 c_register_pragma (0, "options", darwin_pragma_options); \ 1029 c_register_pragma (0, "segment", darwin_pragma_ignore); \ 1030 c_register_pragma (0, "unused", darwin_pragma_unused); \ 1031 c_register_pragma (0, "ms_struct", darwin_pragma_ms_struct); \ 1032 } while (0) 1033 1034 #undef ASM_APP_ON 1035 #define ASM_APP_ON "" 1036 #undef ASM_APP_OFF 1037 #define ASM_APP_OFF "" 1038 1039 void darwin_register_frameworks (const char *, const char *, int); 1040 void darwin_register_objc_includes (const char *, const char *, int); 1041 #define TARGET_EXTRA_PRE_INCLUDES darwin_register_objc_includes 1042 #define TARGET_EXTRA_INCLUDES darwin_register_frameworks 1043 1044 void add_framework_path (char *); 1045 #define TARGET_OPTF add_framework_path 1046 1047 #define TARGET_POSIX_IO 1048 1049 #define WINT_TYPE "int" 1050 1051 /* Every program on darwin links against libSystem which contains the pthread 1052 routines, so there's no need to explicitly call out when doing threaded 1053 work. */ 1054 1055 #undef GOMP_SELF_SPECS 1056 #define GOMP_SELF_SPECS "" 1057 #undef GTM_SELF_SPECS 1058 #define GTM_SELF_SPECS "" 1059 1060 /* Darwin disables section anchors by default. 1061 They should be enabled per arch where support exists in that arch. */ 1062 #define TARGET_ASM_OUTPUT_ANCHOR NULL 1063 #define DARWIN_SECTION_ANCHORS 0 1064 1065 #define HAVE_ENABLE_EXECUTE_STACK 1066 1067 /* For Apple KEXTs, we make the constructors return this to match gcc 1068 2.95. */ 1069 #define TARGET_CXX_CDTOR_RETURNS_THIS (darwin_kextabi_p) 1070 #define TARGET_KEXTABI flag_apple_kext 1071 1072 /* We have target-specific builtins. */ 1073 #define SUBTARGET_FOLD_BUILTIN darwin_fold_builtin 1074 1075 #define TARGET_N_FORMAT_TYPES 1 1076 #define TARGET_FORMAT_TYPES darwin_additional_format_types 1077 1078 #ifndef USED_FOR_TARGET 1079 extern void darwin_driver_init (unsigned int *,struct cl_decoded_option **); 1080 #define GCC_DRIVER_HOST_INITIALIZATION \ 1081 darwin_driver_init (&decoded_options_count, &decoded_options) 1082 #endif 1083 1084 /* The Apple assembler and linker do not support constructor priorities. */ 1085 #undef SUPPORTS_INIT_PRIORITY 1086 #define SUPPORTS_INIT_PRIORITY 0 1087 1088 #undef STACK_CHECK_STATIC_BUILTIN 1089 #define STACK_CHECK_STATIC_BUILTIN 1 1090 1091 /* When building cross-compilers (and native crosses) we shall default to 1092 providing an osx-version-min of this unless overridden by the User. 1093 10.5 is the only version that fully supports all our archs so that's the 1094 fall-back default. */ 1095 #ifndef DEF_MIN_OSX_VERSION 1096 #define DEF_MIN_OSX_VERSION "10.5" 1097 #endif 1098 1099 /* Later versions of ld64 support coalescing weak code/data without requiring 1100 that they be placed in specially identified sections. This is the earliest 1101 _tested_ version known to support this so far. */ 1102 #define MIN_LD64_NO_COAL_SECTS "236.3" 1103 1104 /* From at least version 62.1, ld64 can build symbol indirection stubs as 1105 needed, and there is no need for the compiler to emit them. */ 1106 #define MIN_LD64_OMIT_STUBS "62.1" 1107 1108 /* If we have no definition for the linker version, pick the minimum version 1109 that will bootstrap the compiler. */ 1110 #ifndef LD64_VERSION 1111 # ifndef DEF_LD64 1112 # define LD64_VERSION "85.2.1" 1113 # else 1114 # define LD64_VERSION DEF_LD64 1115 # endif 1116 #endif 1117 1118 #endif /* CONFIG_DARWIN_H */ 1119