* config/sparc/driver-sparc.c (cpu_names): Add SPARC-T5 entry.
[official-gcc.git] / gcc / config / darwin.h
bloba8397cd2331875edf41dd45fd46cdf04bf73723d
1 /* Target definitions for Darwin (Mac OS X) systems.
2 Copyright (C) 1989-2017 Free Software Foundation, Inc.
3 Contributed by Apple Computer Inc.
5 This file is part of GCC.
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.
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.
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.
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/>. */
26 #ifndef CONFIG_DARWIN_H
27 #define CONFIG_DARWIN_H
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. */
36 /* Although NeXT ran on many different architectures, as of Jan 2001
37 the only supported Darwin targets are PowerPC and x86. */
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. */
43 #define DARWIN_X86 0
44 #define DARWIN_PPC 0
46 /* Don't assume anything about the header files. */
47 #define NO_IMPLICIT_EXTERN_C
49 /* Suppress g++ attempt to link in the math library automatically. */
50 #define MATH_LIBRARY ""
52 /* We have atexit. */
54 #define HAVE_ATEXIT
56 /* Define an empty body for the function do_global_dtors() in libgcc2.c. */
58 #define DO_GLOBAL_DTORS_BODY
60 /* The string value for __SIZE_TYPE__. */
62 #ifndef SIZE_TYPE
63 #define SIZE_TYPE "long unsigned int"
64 #endif
66 /* Type used for ptrdiff_t, as a string used in a declaration. */
68 #undef PTRDIFF_TYPE
69 #define PTRDIFF_TYPE "int"
71 /* wchar_t is int. */
73 #undef WCHAR_TYPE
74 #define WCHAR_TYPE "int"
75 #undef WCHAR_TYPE_SIZE
76 #define WCHAR_TYPE_SIZE 32
78 #define INT8_TYPE "signed char"
79 #define INT16_TYPE "short int"
80 #define INT32_TYPE "int"
81 #define INT64_TYPE "long long int"
82 #define UINT8_TYPE "unsigned char"
83 #define UINT16_TYPE "short unsigned int"
84 #define UINT32_TYPE "unsigned int"
85 #define UINT64_TYPE "long long unsigned int"
87 #define INT_LEAST8_TYPE "signed char"
88 #define INT_LEAST16_TYPE "short int"
89 #define INT_LEAST32_TYPE "int"
90 #define INT_LEAST64_TYPE "long long int"
91 #define UINT_LEAST8_TYPE "unsigned char"
92 #define UINT_LEAST16_TYPE "short unsigned int"
93 #define UINT_LEAST32_TYPE "unsigned int"
94 #define UINT_LEAST64_TYPE "long long unsigned int"
96 #define INT_FAST8_TYPE "signed char"
97 #define INT_FAST16_TYPE "short int"
98 #define INT_FAST32_TYPE "int"
99 #define INT_FAST64_TYPE "long long int"
100 #define UINT_FAST8_TYPE "unsigned char"
101 #define UINT_FAST16_TYPE "short unsigned int"
102 #define UINT_FAST32_TYPE "unsigned int"
103 #define UINT_FAST64_TYPE "long long unsigned int"
105 #define INTPTR_TYPE "long int"
106 #define UINTPTR_TYPE "long unsigned int"
108 #define SIG_ATOMIC_TYPE "int"
110 /* Default to using the NeXT-style runtime, since that's what is
111 pre-installed on Darwin systems. */
113 #define NEXT_OBJC_RUNTIME 1
115 /* Don't default to pcc-struct-return, because gcc is the only compiler, and
116 we want to retain compatibility with older gcc versions. */
118 #undef DEFAULT_PCC_STRUCT_RETURN
119 #define DEFAULT_PCC_STRUCT_RETURN 0
121 /* True if pragma ms_struct is in effect. */
122 extern GTY(()) int darwin_ms_struct;
124 #define DRIVER_SELF_SPECS \
125 "%{gfull:-g -fno-eliminate-unused-debug-symbols} %<gfull", \
126 "%{gused:-g -feliminate-unused-debug-symbols} %<gused", \
127 "%{fapple-kext|mkernel:-static}", \
128 "%{shared:-Zdynamiclib} %<shared"
130 #define DARWIN_CC1_SPEC \
131 "%{findirect-virtual-calls: -fapple-kext} %<findirect-virtual-calls " \
132 "%{fterminated-vtables: -fapple-kext} %<fterminated-vtables " \
133 "%<filelist* %<framework*"
135 #define SUBSUBTARGET_OVERRIDE_OPTIONS \
136 do { \
137 darwin_override_options (); \
138 } while (0)
140 #define SUBTARGET_C_COMMON_OVERRIDE_OPTIONS do { \
141 if (flag_mkernel || flag_apple_kext) \
143 if (flag_use_cxa_atexit == 2) \
144 flag_use_cxa_atexit = 0; \
145 /* kexts should always be built without the coalesced sections \
146 because the kernel loader doesn't grok such sections. */ \
147 flag_weak = 0; \
148 /* No RTTI in kexts. */ \
149 flag_rtti = 0; \
151 } while (0)
153 /* Machine dependent cpp options. Don't add more options here, add
154 them to darwin_cpp_builtins in darwin-c.c. */
156 #undef CPP_SPEC
157 #define CPP_SPEC "%{static:%{!dynamic:-D__STATIC__}}%{!static:-D__DYNAMIC__}" \
158 " %{pthread:-D_REENTRANT}"
160 /* This is mostly a clone of the standard LINK_COMMAND_SPEC, plus
161 precomp, libtool, and fat build additions.
163 In general, random Darwin linker flags should go into LINK_SPEC
164 instead of LINK_COMMAND_SPEC. The command spec is better for
165 specifying the handling of options understood by generic Unix
166 linkers, and for positional arguments like libraries. */
168 #if LD64_HAS_EXPORT_DYNAMIC
169 #define DARWIN_EXPORT_DYNAMIC " %{rdynamic:-export_dynamic}"
170 #else
171 #define DARWIN_EXPORT_DYNAMIC " %{rdynamic: %nrdynamic is not supported}"
172 #endif
174 #define LINK_COMMAND_SPEC_A \
175 "%{!fdump=*:%{!fsyntax-only:%{!c:%{!M:%{!MM:%{!E:%{!S:\
176 %(linker)" \
177 LINK_PLUGIN_SPEC \
178 "%{flto*:%<fcompare-debug*} \
179 %{flto*} \
180 %l " LINK_COMPRESS_DEBUG_SPEC \
181 "%X %{s} %{t} %{Z} %{u*} \
182 %{e*} %{r} \
183 %{o*}%{!o:-o a.out} \
184 %{!nostdlib:%{!nostartfiles:%S}} \
185 %{L*} %(link_libgcc) %o %{fprofile-arcs|fprofile-generate*|coverage:-lgcov} \
186 %{fopenacc|fopenmp|%:gt(%{ftree-parallelize-loops=*:%*} 1): \
187 %{static|static-libgcc|static-libstdc++|static-libgfortran: libgomp.a%s; : -lgomp } } \
188 %{fcilkplus:%:include(libcilkrts.spec)%(link_cilkrts)}\
189 %{fgnu-tm: \
190 %{static|static-libgcc|static-libstdc++|static-libgfortran: libitm.a%s; : -litm } } \
191 %{!nostdlib:%{!nodefaultlibs:\
192 %{%:sanitize(address): -lasan } \
193 %{%:sanitize(undefined): -lubsan } \
194 %(link_ssp) \
195 " DARWIN_EXPORT_DYNAMIC " %<rdynamic \
196 %(link_gcc_c_sequence) \
198 %{!nostdlib:%{!nostartfiles:%E}} %{T*} %{F*} }}}}}}}"
200 #define DSYMUTIL "\ndsymutil"
202 #define DSYMUTIL_SPEC \
203 "%{!fdump=*:%{!fsyntax-only:%{!c:%{!M:%{!MM:%{!E:%{!S:\
204 %{v} \
205 %{gdwarf-2:%{!gstabs*:%{%:debug-level-gt(0): -idsym}}}\
206 %{.c|.cc|.C|.cpp|.cp|.c++|.cxx|.CPP|.m|.mm: \
207 %{gdwarf-2:%{!gstabs*:%{%:debug-level-gt(0): -dsym}}}}}}}}}}}"
209 #define LINK_COMMAND_SPEC LINK_COMMAND_SPEC_A DSYMUTIL_SPEC
211 /* Tell collect2 to run dsymutil for us as necessary. */
212 #define COLLECT_RUN_DSYMUTIL 1
214 /* We only want one instance of %G, since libSystem (Darwin's -lc) does not depend
215 on libgcc. */
216 #undef LINK_GCC_C_SEQUENCE_SPEC
217 #define LINK_GCC_C_SEQUENCE_SPEC "%G %L"
219 /* ld64 supports a sysroot, it just has a different name and there's no easy
220 way to check for it at config time. */
221 #undef HAVE_LD_SYSROOT
222 #define HAVE_LD_SYSROOT 1
223 /* It seems the only (working) way to get a space after %R is to append a
224 dangling '/'. */
225 #define SYSROOT_SPEC "%{!isysroot*:-syslibroot %R/ }"
227 /* Do the same as clang, for now, and insert the sysroot for ld when an
228 isysroot is specified. */
229 #define LINK_SYSROOT_SPEC "%{isysroot*:-syslibroot %*}"
231 /* Suppress the addition of extra prefix paths when a sysroot is in use. */
232 #define STANDARD_STARTFILE_PREFIX_1 ""
233 #define STANDARD_STARTFILE_PREFIX_2 ""
235 #define DARWIN_PIE_SPEC "%{fpie|pie|fPIE:}"
237 /* Please keep the random linker options in alphabetical order (modulo
238 'Z' and 'no' prefixes). Note that options taking arguments may appear
239 multiple times on a command line with different arguments each time,
240 so put a * after their names so all of them get passed. */
241 #define LINK_SPEC \
242 "%{static}%{!static:-dynamic} \
243 %:remove-outfile(-ldl) \
244 %:remove-outfile(-lm) \
245 %:remove-outfile(-lpthread) \
246 %{fgnu-runtime: %{static|static-libgcc: \
247 %:replace-outfile(-lobjc libobjc-gnu.a%s); \
248 :%:replace-outfile(-lobjc -lobjc-gnu ) } }\
249 %{static|static-libgcc|static-libgfortran:%:replace-outfile(-lgfortran libgfortran.a%s)}\
250 %{static|static-libgcc|static-libstdc++|static-libgfortran:%:replace-outfile(-lgomp libgomp.a%s)}\
251 %{static|static-libgcc|static-libstdc++:%:replace-outfile(-lstdc++ libstdc++.a%s)}\
252 %{!Zdynamiclib: \
253 %{Zforce_cpusubtype_ALL:-arch %(darwin_arch) -force_cpusubtype_ALL} \
254 %{!Zforce_cpusubtype_ALL:-arch %(darwin_subarch)} \
255 %{Zbundle:-bundle} \
256 %{Zbundle_loader*:-bundle_loader %*} \
257 %{client_name*} \
258 %{compatibility_version*:%e-compatibility_version only allowed with -dynamiclib\
260 %{current_version*:%e-current_version only allowed with -dynamiclib} \
261 %{Zforce_flat_namespace:-force_flat_namespace} \
262 %{Zinstall_name*:%e-install_name only allowed with -dynamiclib} \
263 %{keep_private_externs} \
264 %{private_bundle} \
266 %{Zdynamiclib: -dylib \
267 %{Zbundle:%e-bundle not allowed with -dynamiclib} \
268 %{Zbundle_loader*:%e-bundle_loader not allowed with -dynamiclib} \
269 %{client_name*:%e-client_name not allowed with -dynamiclib} \
270 %{compatibility_version*:-dylib_compatibility_version %*} \
271 %{current_version*:-dylib_current_version %*} \
272 %{Zforce_cpusubtype_ALL:-arch %(darwin_arch)} \
273 %{!Zforce_cpusubtype_ALL: -arch %(darwin_subarch)} \
274 %{Zforce_flat_namespace:%e-force_flat_namespace not allowed with -dynamiclib} \
275 %{Zinstall_name*:-dylib_install_name %*} \
276 %{keep_private_externs:%e-keep_private_externs not allowed with -dynamiclib} \
277 %{private_bundle:%e-private_bundle not allowed with -dynamiclib} \
279 %{Zall_load:-all_load} \
280 %{Zallowable_client*:-allowable_client %*} \
281 %{Zbind_at_load:-bind_at_load} \
282 %{Zarch_errors_fatal:-arch_errors_fatal} \
283 %{Zdead_strip:-dead_strip} \
284 %{Zno_dead_strip_inits_and_terms:-no_dead_strip_inits_and_terms} \
285 %{Zdylib_file*:-dylib_file %*} \
286 %{Zdynamic:-dynamic}\
287 %{Zexported_symbols_list*:-exported_symbols_list %*} \
288 %{Zflat_namespace:-flat_namespace} \
289 %{headerpad_max_install_names} \
290 %{Zimage_base*:-image_base %*} \
291 %{Zinit*:-init %*} \
292 %{mmacosx-version-min=*:-macosx_version_min %*} \
293 %{nomultidefs} \
294 %{Zmulti_module:-multi_module} %{Zsingle_module:-single_module} \
295 %{Zmultiply_defined*:-multiply_defined %*} \
296 %{!Zmultiply_defined*:%{shared-libgcc: \
297 %:version-compare(< 10.5 mmacosx-version-min= -multiply_defined) \
298 %:version-compare(< 10.5 mmacosx-version-min= suppress)}} \
299 %{Zmultiplydefinedunused*:-multiply_defined_unused %*} \
300 " DARWIN_PIE_SPEC " \
301 %{prebind} %{noprebind} %{nofixprebinding} %{prebind_all_twolevel_modules} \
302 %{read_only_relocs} \
303 %{sectcreate*} %{sectorder*} %{seg1addr*} %{segprot*} \
304 %{Zsegaddr*:-segaddr %*} \
305 %{Zsegs_read_only_addr*:-segs_read_only_addr %*} \
306 %{Zsegs_read_write_addr*:-segs_read_write_addr %*} \
307 %{Zseg_addr_table*: -seg_addr_table %*} \
308 %{Zfn_seg_addr_table_filename*:-seg_addr_table_filename %*} \
309 %{sub_library*} %{sub_umbrella*} \
310 " LINK_SYSROOT_SPEC " \
311 %{twolevel_namespace} %{twolevel_namespace_hints} \
312 %{Zumbrella*: -umbrella %*} \
313 %{undefined*} \
314 %{Zunexported_symbols_list*:-unexported_symbols_list %*} \
315 %{Zweak_reference_mismatches*:-weak_reference_mismatches %*} \
316 %{!Zweak_reference_mismatches*:-weak_reference_mismatches non-weak} \
317 %{X} \
318 %{y*} \
319 %{w} \
320 %{pagezero_size*} %{segs_read_*} %{seglinkedit} %{noseglinkedit} \
321 %{sectalign*} %{sectobjectsymbols*} %{segcreate*} %{whyload} \
322 %{whatsloaded} %{dylinker_install_name*} \
323 %{dylinker} %{Mach} "
326 /* Machine dependent libraries. */
328 #define LIB_SPEC "%{!static:-lSystem}"
330 /* Support -mmacosx-version-min by supplying different (stub) libgcc_s.dylib
331 libraries to link against, and by not linking against libgcc_s on
332 earlier-than-10.3.9.
334 Note that by default, -lgcc_eh is not linked against! This is
335 because in a future version of Darwin the EH frame information may
336 be in a new format, or the fallback routine might be changed; if
337 you want to explicitly link against the static version of those
338 routines, because you know you don't need to unwind through system
339 libraries, you need to explicitly say -static-libgcc.
341 If it is linked against, it has to be before -lgcc, because it may
342 need symbols from -lgcc. */
343 #undef REAL_LIBGCC_SPEC
344 #define REAL_LIBGCC_SPEC \
345 "%{static-libgcc|static: -lgcc_eh -lgcc; \
346 shared-libgcc|fexceptions|fgnu-runtime: \
347 %:version-compare(!> 10.5 mmacosx-version-min= -lgcc_s.10.4) \
348 %:version-compare(>< 10.5 10.6 mmacosx-version-min= -lgcc_s.10.5) \
349 %:version-compare(!> 10.5 mmacosx-version-min= -lgcc_ext.10.4) \
350 %:version-compare(>= 10.5 mmacosx-version-min= -lgcc_ext.10.5) \
351 -lgcc ; \
352 :%:version-compare(>< 10.3.9 10.5 mmacosx-version-min= -lgcc_s.10.4) \
353 %:version-compare(>< 10.5 10.6 mmacosx-version-min= -lgcc_s.10.5) \
354 %:version-compare(!> 10.5 mmacosx-version-min= -lgcc_ext.10.4) \
355 %:version-compare(>= 10.5 mmacosx-version-min= -lgcc_ext.10.5) \
356 -lgcc }"
358 /* We specify crt0.o as -lcrt0.o so that ld will search the library path.
360 crt3.o provides __cxa_atexit on systems that don't have it. Since
361 it's only used with C++, which requires passing -shared-libgcc, key
362 off that to avoid unnecessarily adding a destructor to every
363 powerpc program built. */
365 #undef STARTFILE_SPEC
366 #define STARTFILE_SPEC \
367 "%{Zdynamiclib: %(darwin_dylib1) %{fgnu-tm: -lcrttms.o}} \
368 %{!Zdynamiclib:%{Zbundle:%{!static: \
369 %:version-compare(< 10.6 mmacosx-version-min= -lbundle1.o) \
370 %{fgnu-tm: -lcrttms.o}}} \
371 %{!Zbundle:%{pg:%{static:-lgcrt0.o} \
372 %{!static:%{object:-lgcrt0.o} \
373 %{!object:%{preload:-lgcrt0.o} \
374 %{!preload:-lgcrt1.o \
375 %:version-compare(>= 10.8 mmacosx-version-min= -no_new_main) \
376 %(darwin_crt2)}}}} \
377 %{!pg:%{static:-lcrt0.o} \
378 %{!static:%{object:-lcrt0.o} \
379 %{!object:%{preload:-lcrt0.o} \
380 %{!preload: %(darwin_crt1) \
381 %(darwin_crt2)}}}}}} \
382 %{shared-libgcc:%:version-compare(< 10.5 mmacosx-version-min= crt3.o%s)}"
384 /* We want a destructor last in the list. */
385 #define TM_DESTRUCTOR "%{fgnu-tm: -lcrttme.o}"
386 #define ENDFILE_SPEC TM_DESTRUCTOR
388 #define DARWIN_EXTRA_SPECS \
389 { "darwin_crt1", DARWIN_CRT1_SPEC }, \
390 { "darwin_dylib1", DARWIN_DYLIB1_SPEC },
392 #define DARWIN_DYLIB1_SPEC \
393 "%:version-compare(!> 10.5 mmacosx-version-min= -ldylib1.o) \
394 %:version-compare(>< 10.5 10.6 mmacosx-version-min= -ldylib1.10.5.o)"
396 #define DARWIN_CRT1_SPEC \
397 "%:version-compare(!> 10.5 mmacosx-version-min= -lcrt1.o) \
398 %:version-compare(>< 10.5 10.6 mmacosx-version-min= -lcrt1.10.5.o) \
399 %:version-compare(>< 10.6 10.8 mmacosx-version-min= -lcrt1.10.6.o) \
400 %{fgnu-tm: -lcrttms.o}"
402 #ifdef HAVE_AS_MMACOSX_VERSION_MIN_OPTION
403 /* Emit macosx version (but only major). */
404 #define ASM_MMACOSX_VERSION_MIN_SPEC \
405 " %{asm_macosx_version_min=*: -mmacosx-version-min=%*} %<asm_macosx_version_min=*"
406 #else
407 #define ASM_MMACOSX_VERSION_MIN_SPEC " %<asm_macosx_version_min=*"
408 #endif
410 /* When we detect that we're cctools or llvm as, we need to insert the right
411 additional options. */
412 #if HAVE_GNU_AS
413 #define ASM_OPTIONS ""
414 #else
415 #define ASM_OPTIONS "%{v} %{w:-W} %{I*}"
416 #endif
418 /* Default Darwin ASM_SPEC, very simple. */
419 #define ASM_SPEC "-arch %(darwin_arch) \
420 " ASM_OPTIONS " \
421 %{Zforce_cpusubtype_ALL:-force_cpusubtype_ALL} \
422 %{static}" ASM_MMACOSX_VERSION_MIN_SPEC
424 /* Default ASM_DEBUG_SPEC. Darwin's as cannot currently produce dwarf
425 debugging data. */
427 #define ASM_DEBUG_SPEC "%{g*:%{%:debug-level-gt(0):%{!gdwarf*:--gstabs}}}"
429 /* We still allow output of STABS if the assembler supports it. */
430 #ifdef HAVE_AS_STABS_DIRECTIVE
431 #define DBX_DEBUGGING_INFO 1
432 #define PREFERRED_DEBUGGING_TYPE DBX_DEBUG
433 #endif
435 #define DWARF2_DEBUGGING_INFO 1
437 #define DEBUG_FRAME_SECTION "__DWARF,__debug_frame,regular,debug"
438 #define DEBUG_INFO_SECTION "__DWARF,__debug_info,regular,debug"
439 #define DEBUG_ABBREV_SECTION "__DWARF,__debug_abbrev,regular,debug"
440 #define DEBUG_ARANGES_SECTION "__DWARF,__debug_aranges,regular,debug"
441 #define DEBUG_MACINFO_SECTION "__DWARF,__debug_macinfo,regular,debug"
442 #define DEBUG_LINE_SECTION "__DWARF,__debug_line,regular,debug"
443 #define DEBUG_LOC_SECTION "__DWARF,__debug_loc,regular,debug"
444 #define DEBUG_PUBNAMES_SECTION "__DWARF,__debug_pubnames,regular,debug"
445 #define DEBUG_PUBTYPES_SECTION "__DWARF,__debug_pubtypes,regular,debug"
446 #define DEBUG_STR_SECTION "__DWARF,__debug_str,regular,debug"
447 #define DEBUG_RANGES_SECTION "__DWARF,__debug_ranges,regular,debug"
448 #define DEBUG_MACRO_SECTION "__DWARF,__debug_macro,regular,debug"
450 #define TARGET_WANT_DEBUG_PUB_SECTIONS true
452 /* When generating stabs debugging, use N_BINCL entries. */
454 #define DBX_USE_BINCL
456 /* There is no limit to the length of stabs strings. */
458 #define DBX_CONTIN_LENGTH 0
460 /* gdb needs a null N_SO at the end of each file for scattered loading. */
462 #define DBX_OUTPUT_NULL_N_SO_AT_MAIN_SOURCE_FILE_END
464 /* GCC's definition of 'one_only' is the same as its definition of 'weak'. */
465 #define MAKE_DECL_ONE_ONLY(DECL) (DECL_WEAK (DECL) = 1)
467 /* Mach-O supports 'weak imports', and 'weak definitions' in coalesced
468 sections. machopic_select_section ensures that weak variables go in
469 coalesced sections. Weak aliases (or any other kind of aliases) are
470 not supported. Weak symbols that aren't visible outside the .s file
471 are not supported. */
472 #define ASM_WEAKEN_DECL(FILE, DECL, NAME, ALIAS) \
473 do { \
474 if (ALIAS) \
476 warning (0, "alias definitions not supported in Mach-O; ignored"); \
477 break; \
480 if (! DECL_EXTERNAL (DECL) && TREE_PUBLIC (DECL)) \
481 targetm.asm_out.globalize_label (FILE, NAME); \
482 if (DECL_EXTERNAL (DECL)) \
483 fputs ("\t.weak_reference ", FILE); \
484 else if (lookup_attribute ("weak_import", DECL_ATTRIBUTES (DECL))) \
485 break; \
486 else if (TREE_PUBLIC (DECL)) \
487 fputs ("\t.weak_definition ", FILE); \
488 else \
489 break; \
490 assemble_name (FILE, NAME); \
491 fputc ('\n', FILE); \
492 } while (0)
494 /* Darwin has the pthread routines in libSystem, which every program
495 links to, so there's no need for weak-ness for that. */
496 #define GTHREAD_USE_WEAK 0
498 /* The Darwin linker doesn't want coalesced symbols to appear in
499 a static archive's table of contents. */
500 #undef TARGET_WEAK_NOT_IN_ARCHIVE_TOC
501 #define TARGET_WEAK_NOT_IN_ARCHIVE_TOC 1
503 /* On Darwin, we don't (at the time of writing) have linkonce sections
504 with names, so it's safe to make the class data not comdat. */
505 #define TARGET_CXX_CLASS_DATA_ALWAYS_COMDAT hook_bool_void_false
507 /* For efficiency, on Darwin the RTTI information that is always
508 emitted in the standard C++ library should not be COMDAT. */
509 #define TARGET_CXX_LIBRARY_RTTI_COMDAT hook_bool_void_false
511 /* We make exception information linkonce. */
512 #undef TARGET_USES_WEAK_UNWIND_INFO
513 #define TARGET_USES_WEAK_UNWIND_INFO 1
515 /* We need to use a nonlocal label for the start of an EH frame: the
516 Darwin linker requires that a coalesced section start with a label.
517 Unfortunately, it also requires that 'debug' sections don't contain
518 labels. */
519 #undef FRAME_BEGIN_LABEL
520 #define FRAME_BEGIN_LABEL (for_eh ? "EH_frame" : "Lframe")
522 /* Emit a label for the FDE corresponding to DECL. EMPTY means
523 emit a label for an empty FDE. */
524 #define TARGET_ASM_EMIT_UNWIND_LABEL darwin_emit_unwind_label
526 /* Emit a label to separate the exception table. */
527 #define TARGET_ASM_EMIT_EXCEPT_TABLE_LABEL darwin_emit_except_table_label
529 /* Our profiling scheme doesn't LP labels and counter words. */
531 #define NO_PROFILE_COUNTERS 1
533 #undef INIT_SECTION_ASM_OP
534 #define INIT_SECTION_ASM_OP ""
536 #undef INVOKE__main
538 #define TARGET_ASM_CONSTRUCTOR machopic_asm_out_constructor
539 #define TARGET_ASM_DESTRUCTOR machopic_asm_out_destructor
541 /* Always prefix with an underscore. */
543 #define USER_LABEL_PREFIX "_"
545 /* A dummy symbol that will be replaced with the function base name. */
546 #define MACHOPIC_FUNCTION_BASE_NAME "<pic base>"
548 /* Don't output a .file directive. That is only used by the assembler for
549 error reporting. */
550 #undef TARGET_ASM_FILE_START_FILE_DIRECTIVE
551 #define TARGET_ASM_FILE_START_FILE_DIRECTIVE false
553 #undef TARGET_ASM_FILE_END
554 #define TARGET_ASM_FILE_END darwin_file_end
556 /* Because Mach-O relocations have a counter from 1 to 255 for the
557 section number they apply to, it is necessary to output all
558 normal sections before the LTO sections, to make sure that the
559 sections that may have relocations always have a section number
560 smaller than 255. */
561 #undef TARGET_ASM_LTO_START
562 #define TARGET_ASM_LTO_START darwin_asm_lto_start
563 #undef TARGET_ASM_LTO_END
564 #define TARGET_ASM_LTO_END darwin_asm_lto_end
566 #define ASM_OUTPUT_SKIP(FILE,SIZE) \
567 fprintf (FILE, "\t.space " HOST_WIDE_INT_PRINT_UNSIGNED"\n", SIZE)
569 /* Give ObjC methods pretty symbol names. */
571 #undef OBJC_GEN_METHOD_LABEL
572 #define OBJC_GEN_METHOD_LABEL(BUF,IS_INST,CLASS_NAME,CAT_NAME,SEL_NAME,NUM) \
573 do { if (CAT_NAME) \
574 sprintf (BUF, "%c[%s(%s) %s]", (IS_INST) ? '-' : '+', \
575 (CLASS_NAME), (CAT_NAME), (SEL_NAME)); \
576 else \
577 sprintf (BUF, "%c[%s %s]", (IS_INST) ? '-' : '+', \
578 (CLASS_NAME), (SEL_NAME)); \
579 } while (0)
581 #undef ASM_DECLARE_OBJECT_NAME
582 #define ASM_DECLARE_OBJECT_NAME(FILE, NAME, DECL) \
583 darwin_asm_declare_object_name ((FILE), (NAME), (DECL))
585 /* The RTTI data (e.g., __ti4name) is common and public (and static),
586 but it does need to be referenced via indirect PIC data pointers.
587 The machopic_define_symbol calls are telling the machopic subsystem
588 that the name *is* defined in this module, so it doesn't need to
589 make them indirect. */
591 #define ASM_DECLARE_FUNCTION_NAME(FILE, NAME, DECL) \
592 do { \
593 const char *xname = NAME; \
594 if (GET_CODE (XEXP (DECL_RTL (DECL), 0)) != SYMBOL_REF) \
595 xname = IDENTIFIER_POINTER (DECL_NAME (DECL)); \
596 if (! DECL_WEAK (DECL) \
597 && ((TREE_STATIC (DECL) \
598 && (!DECL_COMMON (DECL) || !TREE_PUBLIC (DECL))) \
599 || DECL_INITIAL (DECL))) \
600 machopic_define_symbol (DECL_RTL (DECL)); \
601 if ((TREE_STATIC (DECL) \
602 && (!DECL_COMMON (DECL) || !TREE_PUBLIC (DECL))) \
603 || DECL_INITIAL (DECL)) \
604 (* targetm.encode_section_info) (DECL, DECL_RTL (DECL), false); \
605 ASM_OUTPUT_FUNCTION_LABEL (FILE, xname, DECL); \
606 } while (0)
608 #undef TARGET_ASM_DECLARE_CONSTANT_NAME
609 #define TARGET_ASM_DECLARE_CONSTANT_NAME darwin_asm_declare_constant_name
611 /* Wrap new method names in quotes so the assembler doesn't gag.
612 Make Objective-C internal symbols local and in doing this, we need
613 to accommodate the name mangling done by c++ on file scope locals. */
615 int darwin_label_is_anonymous_local_objc_name (const char *name);
617 #undef ASM_OUTPUT_LABELREF
618 #define ASM_OUTPUT_LABELREF(FILE,NAME) \
619 do { \
620 const char *xname = (NAME); \
621 if (! strcmp (xname, MACHOPIC_FUNCTION_BASE_NAME)) \
622 machopic_output_function_base_name(FILE); \
623 else if (xname[0] == '&' || xname[0] == '*') \
625 int len = strlen (xname); \
626 if (len > 6 && !strcmp ("$stub", xname + len - 5)) \
627 machopic_validate_stub_or_non_lazy_ptr (xname); \
628 else if (len > 7 && !strcmp ("$stub\"", xname + len - 6)) \
629 machopic_validate_stub_or_non_lazy_ptr (xname); \
630 else if (len > 14 && !strcmp ("$non_lazy_ptr", xname + len - 13)) \
631 machopic_validate_stub_or_non_lazy_ptr (xname); \
632 else if (len > 15 && !strcmp ("$non_lazy_ptr\"", xname + len - 14)) \
633 machopic_validate_stub_or_non_lazy_ptr (xname); \
634 if (xname[1] != '"' && name_needs_quotes (&xname[1])) \
635 fprintf (FILE, "\"%s\"", &xname[1]); \
636 else \
637 fputs (&xname[1], FILE); \
639 else if (xname[0] == '+' || xname[0] == '-') \
640 fprintf (FILE, "\"%s\"", xname); \
641 else if (darwin_label_is_anonymous_local_objc_name (xname)) \
642 fprintf (FILE, "L%s", xname); \
643 else if (xname[0] != '"' && name_needs_quotes (xname)) \
644 asm_fprintf (FILE, "\"%U%s\"", xname); \
645 else \
646 asm_fprintf (FILE, "%U%s", xname); \
647 } while (0)
649 /* Output before executable code. */
650 #undef TEXT_SECTION_ASM_OP
651 #define TEXT_SECTION_ASM_OP "\t.text"
653 /* Output before writable data. */
655 #undef DATA_SECTION_ASM_OP
656 #define DATA_SECTION_ASM_OP "\t.data"
658 #undef ALIGN_ASM_OP
659 #define ALIGN_ASM_OP ".align"
661 #undef ASM_OUTPUT_ALIGN
662 #define ASM_OUTPUT_ALIGN(FILE,LOG) \
663 if ((LOG) != 0) \
664 fprintf (FILE, "\t%s\t%d\n", ALIGN_ASM_OP, (LOG))
666 /* The maximum alignment which the object file format can support in
667 bits. For Mach-O, this is 2^15 bytes. */
669 #undef MAX_OFILE_ALIGNMENT
670 #define MAX_OFILE_ALIGNMENT (0x8000 * 8)
672 #define L2_MAX_OFILE_ALIGNMENT 15
674 /* These are the three variants that emit referenced blank space. */
675 #define ASM_OUTPUT_ALIGNED_BSS(FILE, DECL, NAME, SIZE, ALIGN) \
676 darwin_output_aligned_bss ((FILE), (DECL), (NAME), (SIZE), (ALIGN))
678 #undef ASM_OUTPUT_ALIGNED_DECL_LOCAL
679 #define ASM_OUTPUT_ALIGNED_DECL_LOCAL(FILE, DECL, NAME, SIZE, ALIGN) \
680 darwin_asm_output_aligned_decl_local \
681 ((FILE), (DECL), (NAME), (SIZE), (ALIGN))
683 #undef ASM_OUTPUT_ALIGNED_DECL_COMMON
684 #define ASM_OUTPUT_ALIGNED_DECL_COMMON(FILE, DECL, NAME, SIZE, ALIGN) \
685 darwin_asm_output_aligned_decl_common \
686 ((FILE), (DECL), (NAME), (SIZE), (ALIGN))
688 /* The generic version, archs should over-ride where required. */
689 #define MACHOPIC_NL_SYMBOL_PTR_SECTION ".non_lazy_symbol_pointer"
691 /* Declare the section variables. */
692 #ifndef USED_FOR_TARGET
693 enum darwin_section_enum {
694 #define DEF_SECTION(NAME, FLAGS, DIRECTIVE, OBJC) NAME,
695 #include "darwin-sections.def"
696 #undef DEF_SECTION
697 NUM_DARWIN_SECTIONS
699 extern GTY(()) section * darwin_sections[NUM_DARWIN_SECTIONS];
700 #endif
702 #undef TARGET_ASM_SELECT_SECTION
703 #define TARGET_ASM_SELECT_SECTION machopic_select_section
705 #undef TARGET_ASM_FUNCTION_SECTION
706 #define TARGET_ASM_FUNCTION_SECTION darwin_function_section
708 #undef TARGET_ASM_FUNCTION_SWITCHED_TEXT_SECTIONS
709 #define TARGET_ASM_FUNCTION_SWITCHED_TEXT_SECTIONS \
710 darwin_function_switched_text_sections
712 #undef TARGET_ASM_SELECT_RTX_SECTION
713 #define TARGET_ASM_SELECT_RTX_SECTION machopic_select_rtx_section
714 #undef TARGET_ASM_UNIQUE_SECTION
715 #define TARGET_ASM_UNIQUE_SECTION darwin_unique_section
716 #undef TARGET_ASM_FUNCTION_RODATA_SECTION
717 #define TARGET_ASM_FUNCTION_RODATA_SECTION default_no_function_rodata_section
719 #undef TARGET_ASM_TM_CLONE_TABLE_SECTION
720 #define TARGET_ASM_TM_CLONE_TABLE_SECTION darwin_tm_clone_table_section
722 #undef TARGET_ASM_RELOC_RW_MASK
723 #define TARGET_ASM_RELOC_RW_MASK machopic_reloc_rw_mask
725 /* Globalizing directive for a label. */
726 #define GLOBAL_ASM_OP "\t.globl "
727 #define TARGET_ASM_GLOBALIZE_LABEL darwin_globalize_label
729 /* Emit an assembler directive to set visibility for a symbol. Used
730 to support visibility attribute and Darwin's private extern
731 feature. */
732 #undef TARGET_ASM_ASSEMBLE_VISIBILITY
733 #define TARGET_ASM_ASSEMBLE_VISIBILITY darwin_assemble_visibility
735 /* Extra attributes for Darwin. */
736 #define SUBTARGET_ATTRIBUTE_TABLE \
737 /* { name, min_len, max_len, decl_req, type_req, fn_type_req, handler, \
738 affects_type_identity } */ \
739 { "apple_kext_compatibility", 0, 0, false, true, false, \
740 darwin_handle_kext_attribute, false }, \
741 { "weak_import", 0, 0, true, false, false, \
742 darwin_handle_weak_import_attribute, false }
744 /* Make local constant labels linker-visible, so that if one follows a
745 weak_global constant, ld64 will be able to separate the atoms. */
746 #undef ASM_GENERATE_INTERNAL_LABEL
747 #define ASM_GENERATE_INTERNAL_LABEL(LABEL,PREFIX,NUM) \
748 do { \
749 if (strcmp ("LC", PREFIX) == 0) \
750 sprintf (LABEL, "*%s%ld", "lC", (long)(NUM)); \
751 else \
752 sprintf (LABEL, "*%s%ld", PREFIX, (long)(NUM)); \
753 } while (0)
755 #undef TARGET_ASM_MARK_DECL_PRESERVED
756 #define TARGET_ASM_MARK_DECL_PRESERVED darwin_mark_decl_preserved
758 /* Set on a symbol with SYMBOL_FLAG_FUNCTION or
759 MACHO_SYMBOL_FLAG_VARIABLE to indicate that the function or
760 variable has been defined in this translation unit.
761 When porting Mach-O to new architectures you need to make
762 sure these aren't clobbered by the backend. */
764 #define MACHO_SYMBOL_FLAG_VARIABLE (SYMBOL_FLAG_MACH_DEP)
765 #define MACHO_SYMBOL_FLAG_DEFINED ((SYMBOL_FLAG_MACH_DEP) << 1)
767 /* Set on a symbol to indicate when fix-and-continue style code
768 generation is being used and the symbol refers to a static symbol
769 that should be rebound from new instances of a translation unit to
770 the original instance of the data. */
772 #define MACHO_SYMBOL_STATIC ((SYMBOL_FLAG_MACH_DEP) << 2)
774 /* Symbolic names for various things we might know about a symbol. */
776 enum machopic_addr_class {
777 MACHOPIC_UNDEFINED,
778 MACHOPIC_DEFINED_DATA,
779 MACHOPIC_UNDEFINED_DATA,
780 MACHOPIC_DEFINED_FUNCTION,
781 MACHOPIC_UNDEFINED_FUNCTION
784 /* Macros defining the various PIC cases. */
786 #undef MACHO_DYNAMIC_NO_PIC_P
787 #define MACHO_DYNAMIC_NO_PIC_P (TARGET_MACHO_DYNAMIC_NO_PIC)
788 #undef MACHOPIC_INDIRECT
789 #define MACHOPIC_INDIRECT (flag_pic || MACHO_DYNAMIC_NO_PIC_P)
790 #define MACHOPIC_JUST_INDIRECT (MACHO_DYNAMIC_NO_PIC_P)
791 #undef MACHOPIC_PURE
792 #define MACHOPIC_PURE (flag_pic && ! MACHO_DYNAMIC_NO_PIC_P)
794 #undef TARGET_ENCODE_SECTION_INFO
795 #define TARGET_ENCODE_SECTION_INFO darwin_encode_section_info
796 #undef TARGET_STRIP_NAME_ENCODING
797 #define TARGET_STRIP_NAME_ENCODING default_strip_name_encoding
799 #define GEN_BINDER_NAME_FOR_STUB(BUF,STUB,STUB_LENGTH) \
800 do { \
801 const char *const stub_ = (STUB); \
802 char *buffer_ = (BUF); \
803 strcpy (buffer_, stub_); \
804 if (stub_[0] == '"') \
806 strcpy (buffer_ + (STUB_LENGTH) - 1, "_binder\""); \
808 else \
810 strcpy (buffer_ + (STUB_LENGTH), "_binder"); \
812 } while (0)
814 #define GEN_SYMBOL_NAME_FOR_SYMBOL(BUF,SYMBOL,SYMBOL_LENGTH) \
815 do { \
816 const char *const symbol_ = (SYMBOL); \
817 char *buffer_ = (BUF); \
818 if (name_needs_quotes (symbol_) && symbol_[0] != '"') \
820 sprintf (buffer_, "\"%s\"", symbol_); \
822 else \
824 strcpy (buffer_, symbol_); \
826 } while (0)
828 /* Given a symbol name string, create the lazy pointer version
829 of the symbol name. */
831 #define GEN_LAZY_PTR_NAME_FOR_SYMBOL(BUF,SYMBOL,SYMBOL_LENGTH) \
832 do { \
833 const char *symbol_ = (SYMBOL); \
834 char *buffer_ = (BUF); \
835 if (symbol_[0] == '"') \
837 strcpy (buffer_, "\"L"); \
838 strcpy (buffer_ + 2, symbol_ + 1); \
839 strcpy (buffer_ + (SYMBOL_LENGTH), "$lazy_ptr\""); \
841 else if (name_needs_quotes (symbol_)) \
843 strcpy (buffer_, "\"L"); \
844 strcpy (buffer_ + 2, symbol_); \
845 strcpy (buffer_ + (SYMBOL_LENGTH) + 2, "$lazy_ptr\""); \
847 else \
849 strcpy (buffer_, "L"); \
850 strcpy (buffer_ + 1, symbol_); \
851 strcpy (buffer_ + (SYMBOL_LENGTH) + 1, "$lazy_ptr"); \
853 } while (0)
855 #define EH_FRAME_SECTION_NAME "__TEXT"
856 #define EH_FRAME_SECTION_ATTR ",coalesced,no_toc+strip_static_syms+live_support"
858 #undef ASM_PREFERRED_EH_DATA_FORMAT
859 #define ASM_PREFERRED_EH_DATA_FORMAT(CODE,GLOBAL) \
860 (((CODE) == 2 && (GLOBAL) == 1) \
861 ? (DW_EH_PE_pcrel | DW_EH_PE_indirect | DW_EH_PE_sdata4) : \
862 ((CODE) == 1 || (GLOBAL) == 0) ? DW_EH_PE_pcrel : DW_EH_PE_absptr)
864 #define ASM_OUTPUT_DWARF_DELTA(FILE,SIZE,LABEL1,LABEL2) \
865 darwin_asm_output_dwarf_delta (FILE, SIZE, LABEL1, LABEL2, 0)
867 #define ASM_OUTPUT_DWARF_OFFSET(FILE,SIZE,LABEL,OFFSET,BASE) \
868 darwin_asm_output_dwarf_offset (FILE, SIZE, LABEL, OFFSET, BASE)
870 #define ASM_MAYBE_OUTPUT_ENCODED_ADDR_RTX(ASM_OUT_FILE, ENCODING, SIZE, ADDR, DONE) \
871 if (ENCODING == ASM_PREFERRED_EH_DATA_FORMAT (2, 1)) { \
872 darwin_non_lazy_pcrel (ASM_OUT_FILE, ADDR); \
873 goto DONE; \
876 /* Experimentally, putting jump tables in text is faster on SPEC.
877 Also this is needed for correctness for coalesced functions. */
879 #ifndef JUMP_TABLES_IN_TEXT_SECTION
880 #define JUMP_TABLES_IN_TEXT_SECTION 1
881 #endif
883 #define TARGET_TERMINATE_DW2_EH_FRAME_INFO false
885 #define TARGET_ASM_INIT_SECTIONS darwin_init_sections
886 #undef TARGET_ASM_NAMED_SECTION
887 #define TARGET_ASM_NAMED_SECTION darwin_asm_named_section
889 #define DARWIN_REGISTER_TARGET_PRAGMAS() \
890 do { \
891 if (!flag_preprocess_only) \
892 cpp_register_pragma (parse_in, NULL, "mark", \
893 darwin_pragma_ignore, false); \
894 c_register_pragma (0, "options", darwin_pragma_options); \
895 c_register_pragma (0, "segment", darwin_pragma_ignore); \
896 c_register_pragma (0, "unused", darwin_pragma_unused); \
897 c_register_pragma (0, "ms_struct", darwin_pragma_ms_struct); \
898 } while (0)
900 #undef ASM_APP_ON
901 #define ASM_APP_ON ""
902 #undef ASM_APP_OFF
903 #define ASM_APP_OFF ""
905 void darwin_register_frameworks (const char *, const char *, int);
906 void darwin_register_objc_includes (const char *, const char *, int);
907 #define TARGET_EXTRA_PRE_INCLUDES darwin_register_objc_includes
908 #define TARGET_EXTRA_INCLUDES darwin_register_frameworks
910 void add_framework_path (char *);
911 #define TARGET_OPTF add_framework_path
913 #define TARGET_POSIX_IO
915 #define WINT_TYPE "int"
917 /* Every program on darwin links against libSystem which contains the pthread
918 routines, so there's no need to explicitly call out when doing threaded
919 work. */
921 #undef GOMP_SELF_SPECS
922 #define GOMP_SELF_SPECS ""
923 #undef GTM_SELF_SPECS
924 #define GTM_SELF_SPECS ""
926 /* Darwin disables section anchors by default.
927 They should be enabled per arch where support exists in that arch. */
928 #define TARGET_ASM_OUTPUT_ANCHOR NULL
929 #define DARWIN_SECTION_ANCHORS 0
931 #define HAVE_ENABLE_EXECUTE_STACK
933 /* For Apple KEXTs, we make the constructors return this to match gcc
934 2.95. */
935 #define TARGET_CXX_CDTOR_RETURNS_THIS (darwin_kextabi_p)
936 #define TARGET_KEXTABI flag_apple_kext
938 /* We have target-specific builtins. */
939 #define SUBTARGET_FOLD_BUILTIN darwin_fold_builtin
941 #define TARGET_N_FORMAT_TYPES 1
942 #define TARGET_FORMAT_TYPES darwin_additional_format_types
944 #ifndef USED_FOR_TARGET
945 extern void darwin_driver_init (unsigned int *,struct cl_decoded_option **);
946 #define GCC_DRIVER_HOST_INITIALIZATION \
947 darwin_driver_init (&decoded_options_count, &decoded_options)
948 #endif
950 /* The Apple assembler and linker do not support constructor priorities. */
951 #undef SUPPORTS_INIT_PRIORITY
952 #define SUPPORTS_INIT_PRIORITY 0
954 /* When building cross-compilers (and native crosses) we shall default to
955 providing an osx-version-min of this unless overridden by the User.
956 10.5 is the only version that fully supports all our archs so that's the
957 fall-back default. */
958 #define DEF_MIN_OSX_VERSION "10.5"
960 /* Later versions of ld64 support coalescing weak code/data without requiring
961 that they be placed in specially identified sections. This is the earliest
962 _tested_ version known to support this so far. */
963 #define MIN_LD64_NO_COAL_SECTS "236.4"
965 #ifndef LD64_VERSION
966 #define LD64_VERSION "85.2"
967 #else
968 #define DEF_LD64 LD64_VERSION
969 #endif
971 #endif /* CONFIG_DARWIN_H */