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Remove outermost loop parameter.
[official-gcc/graphite-test-results.git] / gcc / config / darwin.h
blob149ef4a697289c2fe0e0cffdf2070cdf51b7f47e
1 /* Target definitions for Darwin (Mac OS X) systems.
2 Copyright (C) 1989, 1990, 1991, 1992, 1993, 2000, 2001, 2002, 2003, 2004,
3 2005, 2006, 2007, 2008, 2009, 2010
4 Free Software Foundation, Inc.
5 Contributed by Apple Computer Inc.
6
7 This file is part of GCC.
8
9 GCC is free software; you can redistribute it and/or modify
10 it under the terms of the GNU General Public License as published by
11 the Free Software Foundation; either version 3, or (at your option)
12 any later version.
13
14 GCC is distributed in the hope that it will be useful,
15 but WITHOUT ANY WARRANTY; without even the implied warranty of
16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 GNU General Public License for more details.
18
19 Under Section 7 of GPL version 3, you are granted additional
20 permissions described in the GCC Runtime Library Exception, version
21 3.1, as published by the Free Software Foundation.
22
23 You should have received a copy of the GNU General Public License and
24 a copy of the GCC Runtime Library Exception along with this program;
25 see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
26 <http://www.gnu.org/licenses/>. */
27
28 #ifndef CONFIG_DARWIN_H
29 #define CONFIG_DARWIN_H
30
31 /* The definitions in this file are common to all processor types
32 running Darwin, which is the kernel for Mac OS X. Darwin is
33 basically a BSD user layer laid over a Mach kernel, then evolved
34 for many years (at NeXT) in parallel with other Unix systems. So
35 while the runtime is a somewhat idiosyncratic Mach-based thing,
36 other definitions look like they would for a BSD variant. */
37
38 /* Although NeXT ran on many different architectures, as of Jan 2001
39 the only supported Darwin targets are PowerPC and x86. */
40
41 /* One of Darwin's NeXT legacies is the Mach-O format, which is partly
42 like a.out and partly like COFF, with additional features like
43 multi-architecture binary support. */
44
45 #define OBJECT_FORMAT_MACHO
46
47 /* Don't assume anything about the header files. */
48 #define NO_IMPLICIT_EXTERN_C
49
50 /* Suppress g++ attempt to link in the math library automatically. */
51 #define MATH_LIBRARY ""
52
53 /* We have atexit. */
54
55 #define HAVE_ATEXIT
56
57 /* Define an empty body for the function do_global_dtors() in libgcc2.c. */
58
59 #define DO_GLOBAL_DTORS_BODY
60
61 /* The string value for __SIZE_TYPE__. */
62
63 #ifndef SIZE_TYPE
64 #define SIZE_TYPE "long unsigned int"
65 #endif
66
67 /* Type used for ptrdiff_t, as a string used in a declaration. */
68
69 #undef PTRDIFF_TYPE
70 #define PTRDIFF_TYPE "int"
71
72 /* wchar_t is int. */
73
74 #undef WCHAR_TYPE
75 #define WCHAR_TYPE "int"
76 #undef WCHAR_TYPE_SIZE
77 #define WCHAR_TYPE_SIZE 32
78
79 #define INT8_TYPE "signed char"
80 #define INT16_TYPE "short int"
81 #define INT32_TYPE "int"
82 #define INT64_TYPE "long long int"
83 #define UINT8_TYPE "unsigned char"
84 #define UINT16_TYPE "short unsigned int"
85 #define UINT32_TYPE "unsigned int"
86 #define UINT64_TYPE "long long unsigned int"
87
88 #define INT_LEAST8_TYPE "signed char"
89 #define INT_LEAST16_TYPE "short int"
90 #define INT_LEAST32_TYPE "int"
91 #define INT_LEAST64_TYPE "long long int"
92 #define UINT_LEAST8_TYPE "unsigned char"
93 #define UINT_LEAST16_TYPE "short unsigned int"
94 #define UINT_LEAST32_TYPE "unsigned int"
95 #define UINT_LEAST64_TYPE "long long unsigned int"
96
97 #define INT_FAST8_TYPE "signed char"
98 #define INT_FAST16_TYPE "short int"
99 #define INT_FAST32_TYPE "int"
100 #define INT_FAST64_TYPE "long long int"
101 #define UINT_FAST8_TYPE "unsigned char"
102 #define UINT_FAST16_TYPE "short unsigned int"
103 #define UINT_FAST32_TYPE "unsigned int"
104 #define UINT_FAST64_TYPE "long long unsigned int"
105
106 #define INTPTR_TYPE "long int"
107 #define UINTPTR_TYPE "long unsigned int"
108
109 #define SIG_ATOMIC_TYPE "int"
110
111 /* Default to using the NeXT-style runtime, since that's what is
112 pre-installed on Darwin systems. */
113
114 #define NEXT_OBJC_RUNTIME
115
116 /* Don't default to pcc-struct-return, because gcc is the only compiler, and
117 we want to retain compatibility with older gcc versions. */
118
119 #undef DEFAULT_PCC_STRUCT_RETURN
120 #define DEFAULT_PCC_STRUCT_RETURN 0
121
122 /* True if pragma ms_struct is in effect. */
123 extern GTY(()) int darwin_ms_struct;
124
125 /* This table intercepts weirdo options whose names would interfere
126 with normal driver conventions, and either translates them into
127 standardly-named options, or adds a 'Z' so that they can get to
128 specs processing without interference.
129
130 Do not expand a linker option to "-Xlinker -<option>", since that
131 forfeits the ability to control via spec strings later. However,
132 as a special exception, do this translation with -filelist, because
133 otherwise the driver will think there are no input files and quit.
134 (The alternative would be to hack the driver to recognize -filelist
135 specially, but it's simpler to use the translation table.)
136
137 Note that an option name with a prefix that matches another option
138 name, that also takes an argument, needs to be modified so the
139 prefix is different, otherwise a '*' after the shorter option will
140 match with the longer one.
141
142 The SUBTARGET_OPTION_TRANSLATE_TABLE macro, which _must_ be defined
143 in gcc/config/{i386,rs6000}/darwin.h, should contain any additional
144 command-line option translations specific to the particular target
145 architecture. */
146
147 #define TARGET_OPTION_TRANSLATE_TABLE \
148 { "-all_load", "-Zall_load" }, \
149 { "-allowable_client", "-Zallowable_client" }, \
150 { "-arch_errors_fatal", "-Zarch_errors_fatal" }, \
151 { "-bind_at_load", "-Zbind_at_load" }, \
152 { "-bundle", "-Zbundle" }, \
153 { "-bundle_loader", "-Zbundle_loader" }, \
154 { "-weak_reference_mismatches", "-Zweak_reference_mismatches" }, \
155 { "-dead_strip", "-Zdead_strip" }, \
156 { "-no_dead_strip_inits_and_terms", "-Zno_dead_strip_inits_and_terms" }, \
157 { "-dependency-file", "-MF" }, \
158 { "-dylib_file", "-Zdylib_file" }, \
159 { "-dynamic", "-Zdynamic" }, \
160 { "-dynamiclib", "-Zdynamiclib" }, \
161 { "-exported_symbols_list", "-Zexported_symbols_list" }, \
162 { "-gfull", "-g -fno-eliminate-unused-debug-symbols" }, \
163 { "-gused", "-g -feliminate-unused-debug-symbols" }, \
164 { "-segaddr", "-Zsegaddr" }, \
165 { "-segs_read_only_addr", "-Zsegs_read_only_addr" }, \
166 { "-segs_read_write_addr", "-Zsegs_read_write_addr" }, \
167 { "-seg_addr_table", "-Zseg_addr_table" }, \
168 { "-seg_addr_table_filename", "-Zfn_seg_addr_table_filename" }, \
169 { "-umbrella", "-Zumbrella" }, \
170 { "-fapple-kext", "-fapple-kext -static -Wa,-static" }, \
171 { "-filelist", "-Xlinker -filelist -Xlinker" }, \
172 { "-findirect-virtual-calls", "-fapple-kext" }, \
173 { "-flat_namespace", "-Zflat_namespace" }, \
174 { "-force_cpusubtype_ALL", "-Zforce_cpusubtype_ALL" }, \
175 { "-force_flat_namespace", "-Zforce_flat_namespace" }, \
176 { "-framework", "-Xlinker -framework -Xlinker" }, \
177 { "-fterminated-vtables", "-fapple-kext" }, \
178 { "-image_base", "-Zimage_base" }, \
179 { "-init", "-Zinit" }, \
180 { "-install_name", "-Zinstall_name" }, \
181 { "-mkernel", "-mkernel -static -Wa,-static" }, \
182 { "-multiply_defined_unused", "-Zmultiplydefinedunused" }, \
183 { "-multiply_defined", "-Zmultiply_defined" }, \
184 { "-multi_module", "-Zmulti_module" }, \
185 { "-static", "-static -Wa,-static" }, \
186 { "-shared", "-Zdynamiclib" }, \
187 { "-single_module", "-Zsingle_module" }, \
188 { "-unexported_symbols_list", "-Zunexported_symbols_list" }, \
189 SUBTARGET_OPTION_TRANSLATE_TABLE
190
191 #define SUBSUBTARGET_OVERRIDE_OPTIONS \
192 do { \
193 darwin_override_options (); \
194 } while (0)
195
196 /* These compiler options take n arguments. */
197
198 #undef WORD_SWITCH_TAKES_ARG
199 #define WORD_SWITCH_TAKES_ARG(STR) \
200 (DEFAULT_WORD_SWITCH_TAKES_ARG (STR) ? 1 : \
201 !strcmp (STR, "Zallowable_client") ? 1 : \
202 !strcmp (STR, "arch") ? 1 : \
203 !strcmp (STR, "arch_only") ? 1 : \
204 !strcmp (STR, "Zbundle_loader") ? 1 : \
205 !strcmp (STR, "client_name") ? 1 : \
206 !strcmp (STR, "compatibility_version") ? 1 : \
207 !strcmp (STR, "current_version") ? 1 : \
208 !strcmp (STR, "Zdylib_file") ? 1 : \
209 !strcmp (STR, "Zexported_symbols_list") ? 1 : \
210 !strcmp (STR, "Zimage_base") ? 1 : \
211 !strcmp (STR, "Zinit") ? 1 : \
212 !strcmp (STR, "Zinstall_name") ? 1 : \
213 !strcmp (STR, "Zmultiplydefinedunused") ? 1 : \
214 !strcmp (STR, "Zmultiply_defined") ? 1 : \
215 !strcmp (STR, "precomp-trustfile") ? 1 : \
216 !strcmp (STR, "read_only_relocs") ? 1 : \
217 !strcmp (STR, "sectcreate") ? 3 : \
218 !strcmp (STR, "sectorder") ? 3 : \
219 !strcmp (STR, "Zsegaddr") ? 2 : \
220 !strcmp (STR, "Zsegs_read_only_addr") ? 1 : \
221 !strcmp (STR, "Zsegs_read_write_addr") ? 1 : \
222 !strcmp (STR, "Zseg_addr_table") ? 1 : \
223 !strcmp (STR, "Zfn_seg_addr_table_filename") ? 1 :\
224 !strcmp (STR, "seg1addr") ? 1 : \
225 !strcmp (STR, "segprot") ? 3 : \
226 !strcmp (STR, "sub_library") ? 1 : \
227 !strcmp (STR, "sub_umbrella") ? 1 : \
228 !strcmp (STR, "Zumbrella") ? 1 : \
229 !strcmp (STR, "undefined") ? 1 : \
230 !strcmp (STR, "Zunexported_symbols_list") ? 1 : \
231 !strcmp (STR, "Zweak_reference_mismatches") ? 1 : \
232 !strcmp (STR, "pagezero_size") ? 1 : \
233 !strcmp (STR, "segs_read_only_addr") ? 1 : \
234 !strcmp (STR, "segs_read_write_addr") ? 1 : \
235 !strcmp (STR, "sectalign") ? 3 : \
236 !strcmp (STR, "sectobjectsymbols") ? 2 : \
237 !strcmp (STR, "segcreate") ? 3 : \
238 !strcmp (STR, "dylinker_install_name") ? 1 : \
239 0)
240
241 #define SUBTARGET_C_COMMON_OVERRIDE_OPTIONS do { \
242 if (flag_mkernel || flag_apple_kext) \
243 { \
244 if (flag_use_cxa_atexit == 2) \
245 flag_use_cxa_atexit = 0; \
246 /* kexts should always be built without the coalesced sections \
247 because the kernel loader doesn't grok such sections. */ \
248 flag_weak = 0; \
249 /* No RTTI in kexts. */ \
250 flag_rtti = 0; \
251 } \
252 } while (0)
253
254 /* Machine dependent cpp options. Don't add more options here, add
255 them to darwin_cpp_builtins in darwin-c.c. */
256
257 #undef CPP_SPEC
258 #define CPP_SPEC "%{static:%{!dynamic:-D__STATIC__}}%{!static:-D__DYNAMIC__}" \
259 " %{pthread:-D_REENTRANT}"
260
261 /* This is mostly a clone of the standard LINK_COMMAND_SPEC, plus
262 precomp, libtool, and fat build additions. Also we
263 don't specify a second %G after %L because libSystem is
264 self-contained and doesn't need to link against libgcc.a. */
265 /* In general, random Darwin linker flags should go into LINK_SPEC
266 instead of LINK_COMMAND_SPEC. The command spec is better for
267 specifying the handling of options understood by generic Unix
268 linkers, and for positional arguments like libraries. */
269 #define LINK_COMMAND_SPEC "\
270 %{!fdump=*:%{!fsyntax-only:%{!c:%{!M:%{!MM:%{!E:%{!S:\
271 %(linker) %l %X %{d} %{s} %{t} %{Z} %{u*} \
272 %{A} %{e*} %{m} %{r} %{x} \
273 %{o*}%{!o:-o a.out} \
274 %{!A:%{!nostdlib:%{!nostartfiles:%S}}} \
275 %{L*} %(link_libgcc) %o %{fprofile-arcs|fprofile-generate*|coverage:-lgcov} \
276 %{flto} %{fwhopr} \
277 %{fopenmp|ftree-parallelize-loops=*: \
278 %{static|static-libgcc|static-libstdc++|static-libgfortran: libgomp.a%s; : -lgomp } } \
279 %{!nostdlib:%{!nodefaultlibs: %(link_ssp) %G %L }} \
280 %{!A:%{!nostdlib:%{!nostartfiles:%E}}} %{T*} %{F*} }}}}}}}\n\
281 %{!fdump=*:%{!fsyntax-only:%{!c:%{!M:%{!MM:%{!E:%{!S:\
282 %{.c|.cc|.C|.cpp|.cp|.c++|.cxx|.CPP|.m|.mm: \
283 %{gdwarf-2:%{!gstabs*:%{!g0: dsymutil %{o*:%*}%{!o:a.out}}}}}}}}}}}}"
284
285 #ifdef TARGET_SYSTEM_ROOT
286 #define LINK_SYSROOT_SPEC \
287 "%{isysroot*:-syslibroot %*;:-syslibroot " TARGET_SYSTEM_ROOT "}"
288 #else
289 #define LINK_SYSROOT_SPEC "%{isysroot*:-syslibroot %*}"
290 #endif
291
292 /* Please keep the random linker options in alphabetical order (modulo
293 'Z' and 'no' prefixes). Note that options taking arguments may appear
294 multiple times on a command line with different arguments each time,
295 so put a * after their names so all of them get passed. */
296 #define LINK_SPEC \
297 "%{static}%{!static:-dynamic} \
298 %{fgnu-runtime: %{static|static-libgcc: \
299 %:replace-outfile(-lobjc libobjc-gnu.a%s); \
300 :%:replace-outfile(-lobjc -lobjc-gnu ) } }\
301 %{static|static-libgcc|static-libgfortran:%:replace-outfile(-lgfortran libgfortran.a%s)}\
302 %{static|static-libgcc|static-libstdc++|static-libgfortran:%:replace-outfile(-lgomp libgomp.a%s)}\
303 %{static|static-libgcc|static-libstdc++:%:replace-outfile(-lstdc++ libstdc++.a%s)}\
304 %{!Zdynamiclib: \
305 %{Zforce_cpusubtype_ALL:-arch %(darwin_arch) -force_cpusubtype_ALL} \
306 %{!Zforce_cpusubtype_ALL:-arch %(darwin_subarch)} \
307 %{Zbundle:-bundle} \
308 %{Zbundle_loader*:-bundle_loader %*} \
309 %{client_name*} \
310 %{compatibility_version*:%e-compatibility_version only allowed with -dynamiclib\
311 } \
312 %{current_version*:%e-current_version only allowed with -dynamiclib} \
313 %{Zforce_flat_namespace:-force_flat_namespace} \
314 %{Zinstall_name*:%e-install_name only allowed with -dynamiclib} \
315 %{keep_private_externs} \
316 %{private_bundle} \
317 } \
318 %{Zdynamiclib: -dylib \
319 %{Zbundle:%e-bundle not allowed with -dynamiclib} \
320 %{Zbundle_loader*:%e-bundle_loader not allowed with -dynamiclib} \
321 %{client_name*:%e-client_name not allowed with -dynamiclib} \
322 %{compatibility_version*:-dylib_compatibility_version %*} \
323 %{current_version*:-dylib_current_version %*} \
324 %{Zforce_cpusubtype_ALL:-arch %(darwin_arch)} \
325 %{!Zforce_cpusubtype_ALL: -arch %(darwin_subarch)} \
326 %{Zforce_flat_namespace:%e-force_flat_namespace not allowed with -dynamiclib} \
327 %{Zinstall_name*:-dylib_install_name %*} \
328 %{keep_private_externs:%e-keep_private_externs not allowed with -dynamiclib} \
329 %{private_bundle:%e-private_bundle not allowed with -dynamiclib} \
330 } \
331 %{Zall_load:-all_load} \
332 %{Zallowable_client*:-allowable_client %*} \
333 %{Zbind_at_load:-bind_at_load} \
334 %{Zarch_errors_fatal:-arch_errors_fatal} \
335 %{Zdead_strip:-dead_strip} \
336 %{Zno_dead_strip_inits_and_terms:-no_dead_strip_inits_and_terms} \
337 %{Zdylib_file*:-dylib_file %*} \
338 %{Zdynamic:-dynamic}\
339 %{Zexported_symbols_list*:-exported_symbols_list %*} \
340 %{Zflat_namespace:-flat_namespace} \
341 %{headerpad_max_install_names*} \
342 %{Zimage_base*:-image_base %*} \
343 %{Zinit*:-init %*} \
344 %{!mmacosx-version-min=*:-macosx_version_min %(darwin_minversion)} \
345 %{mmacosx-version-min=*:-macosx_version_min %*} \
346 %{nomultidefs} \
347 %{Zmulti_module:-multi_module} %{Zsingle_module:-single_module} \
348 %{Zmultiply_defined*:-multiply_defined %*} \
349 %{!Zmultiply_defined*:%{shared-libgcc: \
350 %:version-compare(< 10.5 mmacosx-version-min= -multiply_defined) \
351 %:version-compare(< 10.5 mmacosx-version-min= suppress)}} \
352 %{Zmultiplydefinedunused*:-multiply_defined_unused %*} \
353 %{fpie:-pie} \
354 %{prebind} %{noprebind} %{nofixprebinding} %{prebind_all_twolevel_modules} \
355 %{read_only_relocs} \
356 %{sectcreate*} %{sectorder*} %{seg1addr*} %{segprot*} \
357 %{Zsegaddr*:-segaddr %*} \
358 %{Zsegs_read_only_addr*:-segs_read_only_addr %*} \
359 %{Zsegs_read_write_addr*:-segs_read_write_addr %*} \
360 %{Zseg_addr_table*: -seg_addr_table %*} \
361 %{Zfn_seg_addr_table_filename*:-seg_addr_table_filename %*} \
362 %{sub_library*} %{sub_umbrella*} \
363 " LINK_SYSROOT_SPEC " \
364 %{twolevel_namespace} %{twolevel_namespace_hints} \
365 %{Zumbrella*: -umbrella %*} \
366 %{undefined*} \
367 %{Zunexported_symbols_list*:-unexported_symbols_list %*} \
368 %{Zweak_reference_mismatches*:-weak_reference_mismatches %*} \
369 %{!Zweak_reference_mismatches*:-weak_reference_mismatches non-weak} \
370 %{X} \
371 %{y*} \
372 %{w} \
373 %{pagezero_size*} %{segs_read_*} %{seglinkedit} %{noseglinkedit} \
374 %{sectalign*} %{sectobjectsymbols*} %{segcreate*} %{whyload} \
375 %{whatsloaded} %{dylinker_install_name*} \
376 %{dylinker} %{Mach} "
377
378
379 /* Machine dependent libraries. */
380
381 #define LIB_SPEC "%{!static:-lSystem}"
382
383 /* Support -mmacosx-version-min by supplying different (stub) libgcc_s.dylib
384 libraries to link against, and by not linking against libgcc_s on
385 earlier-than-10.3.9.
386
387 Note that by default, -lgcc_eh is not linked against! This is
388 because in a future version of Darwin the EH frame information may
389 be in a new format, or the fallback routine might be changed; if
390 you want to explicitly link against the static version of those
391 routines, because you know you don't need to unwind through system
392 libraries, you need to explicitly say -static-libgcc.
393
394 If it is linked against, it has to be before -lgcc, because it may
395 need symbols from -lgcc. */
396 #undef REAL_LIBGCC_SPEC
397 #define REAL_LIBGCC_SPEC \
398 "%{static-libgcc|static: -lgcc_eh -lgcc; \
399 shared-libgcc|fexceptions|fgnu-runtime: \
400 %:version-compare(!> 10.5 mmacosx-version-min= -lgcc_s.10.4) \
401 %:version-compare(>= 10.5 mmacosx-version-min= -lgcc_s.10.5) \
402 %:version-compare(!> 10.5 mmacosx-version-min= -lgcc_ext.10.4) \
403 %:version-compare(>= 10.5 mmacosx-version-min= -lgcc_ext.10.5) \
404 -lgcc; \
405 :%:version-compare(>< 10.3.9 10.5 mmacosx-version-min= -lgcc_s.10.4) \
406 %:version-compare(>= 10.5 mmacosx-version-min= -lgcc_s.10.5) \
407 %:version-compare(!> 10.5 mmacosx-version-min= -lgcc_ext.10.4) \
408 %:version-compare(>= 10.5 mmacosx-version-min= -lgcc_ext.10.5) \
409 -lgcc}"
410
411 /* We specify crt0.o as -lcrt0.o so that ld will search the library path.
412
413 crt3.o provides __cxa_atexit on systems that don't have it. Since
414 it's only used with C++, which requires passing -shared-libgcc, key
415 off that to avoid unnecessarily adding a destructor to every
416 powerpc program built. */
417
418 #undef STARTFILE_SPEC
419 #define STARTFILE_SPEC \
420 "%{Zdynamiclib: %(darwin_dylib1) } \
421 %{!Zdynamiclib:%{Zbundle:%{!static:-lbundle1.o}} \
422 %{!Zbundle:%{pg:%{static:-lgcrt0.o} \
423 %{!static:%{object:-lgcrt0.o} \
424 %{!object:%{preload:-lgcrt0.o} \
425 %{!preload:-lgcrt1.o %(darwin_crt2)}}}} \
426 %{!pg:%{static:-lcrt0.o} \
427 %{!static:%{object:-lcrt0.o} \
428 %{!object:%{preload:-lcrt0.o} \
429 %{!preload: %(darwin_crt1) \
430 %(darwin_crt2)}}}}}} \
431 %{shared-libgcc:%:version-compare(< 10.5 mmacosx-version-min= crt3.o%s)}"
432
433 /* The native Darwin linker doesn't necessarily place files in the order
434 that they're specified on the link line. Thus, it is pointless
435 to put anything in ENDFILE_SPEC. */
436 /* #define ENDFILE_SPEC "" */
437
438 #define DARWIN_EXTRA_SPECS \
439 { "darwin_crt1", DARWIN_CRT1_SPEC }, \
440 { "darwin_dylib1", DARWIN_DYLIB1_SPEC }, \
441 { "darwin_minversion", DARWIN_MINVERSION_SPEC },
442
443 #define DARWIN_DYLIB1_SPEC \
444 "%:version-compare(!> 10.5 mmacosx-version-min= -ldylib1.o) \
445 %:version-compare(>= 10.5 mmacosx-version-min= -ldylib1.10.5.o)"
446
447 #define DARWIN_CRT1_SPEC \
448 "%:version-compare(!> 10.5 mmacosx-version-min= -lcrt1.o) \
449 %:version-compare(>= 10.5 mmacosx-version-min= -lcrt1.10.5.o)"
450
451 /* Default Darwin ASM_SPEC, very simple. */
452 #define ASM_SPEC "-arch %(darwin_arch) \
453 %{Zforce_cpusubtype_ALL:-force_cpusubtype_ALL}"
454
455 /* We still allow output of STABS. */
456
457 #define DBX_DEBUGGING_INFO 1
458
459 #define DWARF2_DEBUGGING_INFO 1
460 #define PREFERRED_DEBUGGING_TYPE DBX_DEBUG
461
462 #define DEBUG_FRAME_SECTION "__DWARF,__debug_frame,regular,debug"
463 #define DEBUG_INFO_SECTION "__DWARF,__debug_info,regular,debug"
464 #define DEBUG_ABBREV_SECTION "__DWARF,__debug_abbrev,regular,debug"
465 #define DEBUG_ARANGES_SECTION "__DWARF,__debug_aranges,regular,debug"
466 #define DEBUG_MACINFO_SECTION "__DWARF,__debug_macinfo,regular,debug"
467 #define DEBUG_LINE_SECTION "__DWARF,__debug_line,regular,debug"
468 #define DEBUG_LOC_SECTION "__DWARF,__debug_loc,regular,debug"
469 #define DEBUG_PUBNAMES_SECTION "__DWARF,__debug_pubnames,regular,debug"
470 #define DEBUG_PUBTYPES_SECTION "__DWARF,__debug_pubtypes,regular,debug"
471 #define DEBUG_STR_SECTION "__DWARF,__debug_str,regular,debug"
472 #define DEBUG_RANGES_SECTION "__DWARF,__debug_ranges,regular,debug"
473
474 /* When generating stabs debugging, use N_BINCL entries. */
475
476 #define DBX_USE_BINCL
477
478 /* There is no limit to the length of stabs strings. */
479
480 #define DBX_CONTIN_LENGTH 0
481
482 /* gdb needs a null N_SO at the end of each file for scattered loading. */
483
484 #define DBX_OUTPUT_NULL_N_SO_AT_MAIN_SOURCE_FILE_END
485
486 /* GCC's definition of 'one_only' is the same as its definition of 'weak'. */
487 #define MAKE_DECL_ONE_ONLY(DECL) (DECL_WEAK (DECL) = 1)
488
489 /* Mach-O supports 'weak imports', and 'weak definitions' in coalesced
490 sections. machopic_select_section ensures that weak variables go in
491 coalesced sections. Weak aliases (or any other kind of aliases) are
492 not supported. Weak symbols that aren't visible outside the .s file
493 are not supported. */
494 #define ASM_WEAKEN_DECL(FILE, DECL, NAME, ALIAS) \
495 do { \
496 if (ALIAS) \
497 { \
498 warning (0, "alias definitions not supported in Mach-O; ignored"); \
499 break; \
500 } \
501 \
502 if (! DECL_EXTERNAL (DECL) && TREE_PUBLIC (DECL)) \
503 targetm.asm_out.globalize_label (FILE, NAME); \
504 if (DECL_EXTERNAL (DECL)) \
505 fputs ("\t.weak_reference ", FILE); \
506 else if (lookup_attribute ("weak_import", DECL_ATTRIBUTES (DECL))) \
507 break; \
508 else if (TREE_PUBLIC (DECL)) \
509 fputs ("\t.weak_definition ", FILE); \
510 else \
511 break; \
512 assemble_name (FILE, NAME); \
513 fputc ('\n', FILE); \
514 } while (0)
515
516 /* Darwin has the pthread routines in libSystem, which every program
517 links to, so there's no need for weak-ness for that. */
518 #define GTHREAD_USE_WEAK 0
519
520 /* The Darwin linker imposes two limitations on common symbols: they
521 can't have hidden visibility, and they can't appear in dylibs. As
522 a consequence, we should never use common symbols to represent
523 vague linkage. */
524 #undef USE_COMMON_FOR_ONE_ONLY
525 #define USE_COMMON_FOR_ONE_ONLY 0
526
527 /* The Darwin linker doesn't want coalesced symbols to appear in
528 a static archive's table of contents. */
529 #undef TARGET_WEAK_NOT_IN_ARCHIVE_TOC
530 #define TARGET_WEAK_NOT_IN_ARCHIVE_TOC 1
531
532 /* On Darwin, we don't (at the time of writing) have linkonce sections
533 with names, so it's safe to make the class data not comdat. */
534 #define TARGET_CXX_CLASS_DATA_ALWAYS_COMDAT hook_bool_void_false
535
536 /* For efficiency, on Darwin the RTTI information that is always
537 emitted in the standard C++ library should not be COMDAT. */
538 #define TARGET_CXX_LIBRARY_RTTI_COMDAT hook_bool_void_false
539
540 /* We make exception information linkonce. */
541 #undef TARGET_USES_WEAK_UNWIND_INFO
542 #define TARGET_USES_WEAK_UNWIND_INFO 1
543
544 /* We need to use a nonlocal label for the start of an EH frame: the
545 Darwin linker requires that a coalesced section start with a label.
546 Unfortunately, it also requires that 'debug' sections don't contain
547 labels. */
548 #undef FRAME_BEGIN_LABEL
549 #define FRAME_BEGIN_LABEL (for_eh ? "EH_frame" : "Lframe")
550
551 /* Emit a label for the FDE corresponding to DECL. EMPTY means
552 emit a label for an empty FDE. */
553 #define TARGET_ASM_EMIT_UNWIND_LABEL darwin_emit_unwind_label
554
555 /* Emit a label to separate the exception table. */
556 #define TARGET_ASM_EMIT_EXCEPT_TABLE_LABEL darwin_emit_except_table_label
557
558 /* Our profiling scheme doesn't LP labels and counter words. */
559
560 #define NO_PROFILE_COUNTERS 1
561
562 #undef INIT_SECTION_ASM_OP
563 #define INIT_SECTION_ASM_OP
564
565 #undef INVOKE__main
566
567 #define TARGET_ASM_CONSTRUCTOR machopic_asm_out_constructor
568 #define TARGET_ASM_DESTRUCTOR machopic_asm_out_destructor
569
570 /* Always prefix with an underscore. */
571
572 #define USER_LABEL_PREFIX "_"
573
574 /* A dummy symbol that will be replaced with the function base name. */
575 #define MACHOPIC_FUNCTION_BASE_NAME "<pic base>"
576
577 /* Don't output a .file directive. That is only used by the assembler for
578 error reporting. */
579 #undef TARGET_ASM_FILE_START_FILE_DIRECTIVE
580 #define TARGET_ASM_FILE_START_FILE_DIRECTIVE false
581
582 #undef TARGET_ASM_FILE_END
583 #define TARGET_ASM_FILE_END darwin_file_end
584
585 /* Because Mach-O relocations have a counter from 1 to 255 for the
586 section number they apply to, it is necessary to output all
587 normal sections before the LTO sections, to make sure that the
588 sections that may have relocations always have a section number
589 smaller than 255. */
590 #undef TARGET_ASM_LTO_START
591 #define TARGET_ASM_LTO_START darwin_asm_lto_start
592 #undef TARGET_ASM_LTO_END
593 #define TARGET_ASM_LTO_END darwin_asm_lto_end
594
595 #define ASM_OUTPUT_SKIP(FILE,SIZE) \
596 fprintf (FILE, "\t.space "HOST_WIDE_INT_PRINT_UNSIGNED"\n", SIZE)
597
598 /* Give ObjC methods pretty symbol names. */
599
600 #undef OBJC_GEN_METHOD_LABEL
601 #define OBJC_GEN_METHOD_LABEL(BUF,IS_INST,CLASS_NAME,CAT_NAME,SEL_NAME,NUM) \
602 do { if (CAT_NAME) \
603 sprintf (BUF, "%c[%s(%s) %s]", (IS_INST) ? '-' : '+', \
604 (CLASS_NAME), (CAT_NAME), (SEL_NAME)); \
605 else \
606 sprintf (BUF, "%c[%s %s]", (IS_INST) ? '-' : '+', \
607 (CLASS_NAME), (SEL_NAME)); \
608 } while (0)
609
610 /* The RTTI data (e.g., __ti4name) is common and public (and static),
611 but it does need to be referenced via indirect PIC data pointers.
612 The machopic_define_symbol calls are telling the machopic subsystem
613 that the name *is* defined in this module, so it doesn't need to
614 make them indirect. */
615
616 #undef ASM_DECLARE_OBJECT_NAME
617 #define ASM_DECLARE_OBJECT_NAME(FILE, NAME, DECL) \
618 do { \
619 const char *xname = NAME; \
620 if (GET_CODE (XEXP (DECL_RTL (DECL), 0)) != SYMBOL_REF) \
621 xname = IDENTIFIER_POINTER (DECL_NAME (DECL)); \
622 if (! DECL_WEAK (DECL) \
623 && ((TREE_STATIC (DECL) \
624 && (!DECL_COMMON (DECL) || !TREE_PUBLIC (DECL))) \
625 || DECL_INITIAL (DECL))) \
626 machopic_define_symbol (DECL_RTL (DECL)); \
627 if ((TREE_STATIC (DECL) \
628 && (!DECL_COMMON (DECL) || !TREE_PUBLIC (DECL))) \
629 || DECL_INITIAL (DECL)) \
630 (* targetm.encode_section_info) (DECL, DECL_RTL (DECL), false); \
631 ASM_OUTPUT_LABEL (FILE, xname); \
632 /* Darwin doesn't support zero-size objects, so give them a \
633 byte. */ \
634 if (tree_low_cst (DECL_SIZE_UNIT (DECL), 1) == 0) \
635 assemble_zeros (1); \
636 } while (0)
637
638 #define ASM_DECLARE_FUNCTION_NAME(FILE, NAME, DECL) \
639 do { \
640 const char *xname = NAME; \
641 if (GET_CODE (XEXP (DECL_RTL (DECL), 0)) != SYMBOL_REF) \
642 xname = IDENTIFIER_POINTER (DECL_NAME (DECL)); \
643 if (! DECL_WEAK (DECL) \
644 && ((TREE_STATIC (DECL) \
645 && (!DECL_COMMON (DECL) || !TREE_PUBLIC (DECL))) \
646 || DECL_INITIAL (DECL))) \
647 machopic_define_symbol (DECL_RTL (DECL)); \
648 if ((TREE_STATIC (DECL) \
649 && (!DECL_COMMON (DECL) || !TREE_PUBLIC (DECL))) \
650 || DECL_INITIAL (DECL)) \
651 (* targetm.encode_section_info) (DECL, DECL_RTL (DECL), false); \
652 ASM_OUTPUT_LABEL (FILE, xname); \
653 } while (0)
654
655 #define ASM_DECLARE_CONSTANT_NAME(FILE, NAME, EXP, SIZE) \
656 do { \
657 ASM_OUTPUT_LABEL (FILE, NAME); \
658 /* Darwin doesn't support zero-size objects, so give them a \
659 byte. */ \
660 if ((SIZE) == 0) \
661 assemble_zeros (1); \
662 } while (0)
663
664 /* Wrap new method names in quotes so the assembler doesn't gag.
665 Make Objective-C internal symbols local and in doing this, we need
666 to accommodate the name mangling done by c++ on file scope locals. */
667
668
669 int darwin_label_is_anonymous_local_objc_name (const char *name);
670
671 #undef ASM_OUTPUT_LABELREF
672 #define ASM_OUTPUT_LABELREF(FILE,NAME) \
673 do { \
674 const char *xname = (NAME); \
675 if (! strcmp (xname, MACHOPIC_FUNCTION_BASE_NAME)) \
676 machopic_output_function_base_name(FILE); \
677 else if (xname[0] == '&' || xname[0] == '*') \
678 { \
679 int len = strlen (xname); \
680 if (len > 6 && !strcmp ("$stub", xname + len - 5)) \
681 machopic_validate_stub_or_non_lazy_ptr (xname); \
682 else if (len > 7 && !strcmp ("$stub\"", xname + len - 6)) \
683 machopic_validate_stub_or_non_lazy_ptr (xname); \
684 else if (len > 14 && !strcmp ("$non_lazy_ptr", xname + len - 13)) \
685 machopic_validate_stub_or_non_lazy_ptr (xname); \
686 else if (len > 15 && !strcmp ("$non_lazy_ptr\"", xname + len - 14)) \
687 machopic_validate_stub_or_non_lazy_ptr (xname); \
688 if (xname[1] != '"' && name_needs_quotes (&xname[1])) \
689 fprintf (FILE, "\"%s\"", &xname[1]); \
690 else \
691 fputs (&xname[1], FILE); \
692 } \
693 else if (xname[0] == '+' || xname[0] == '-') \
694 fprintf (FILE, "\"%s\"", xname); \
695 else if (darwin_label_is_anonymous_local_objc_name (xname)) \
696 fprintf (FILE, "L%s", xname); \
697 else if (!strncmp (xname, ".objc_class_name_", 17)) \
698 fprintf (FILE, "%s", xname); \
699 else if (xname[0] != '"' && name_needs_quotes (xname)) \
700 fprintf (FILE, "\"%s\"", xname); \
701 else \
702 asm_fprintf (FILE, "%U%s", xname); \
703 } while (0)
704
705 /* Output before executable code. */
706 #undef TEXT_SECTION_ASM_OP
707 #define TEXT_SECTION_ASM_OP "\t.text"
708
709 /* Output before writable data. */
710
711 #undef DATA_SECTION_ASM_OP
712 #define DATA_SECTION_ASM_OP "\t.data"
713
714 #undef ALIGN_ASM_OP
715 #define ALIGN_ASM_OP ".align"
716
717 #undef ASM_OUTPUT_ALIGN
718 #define ASM_OUTPUT_ALIGN(FILE,LOG) \
719 if ((LOG) != 0) \
720 fprintf (FILE, "\t%s %d\n", ALIGN_ASM_OP, (LOG))
721
722 /* Ensure correct alignment of bss data. */
723
724 #undef ASM_OUTPUT_ALIGNED_DECL_LOCAL
725 #define ASM_OUTPUT_ALIGNED_DECL_LOCAL(FILE, DECL, NAME, SIZE, ALIGN) \
726 do { \
727 unsigned HOST_WIDE_INT _new_size = SIZE; \
728 fputs ("\t.lcomm ", (FILE)); \
729 assemble_name ((FILE), (NAME)); \
730 if (_new_size == 0) _new_size = 1; \
731 fprintf ((FILE), ","HOST_WIDE_INT_PRINT_UNSIGNED",%u\n", _new_size, \
732 floor_log2 ((ALIGN) / BITS_PER_UNIT)); \
733 if ((DECL) && ((TREE_STATIC (DECL) \
734 && (!DECL_COMMON (DECL) || !TREE_PUBLIC (DECL))) \
735 || DECL_INITIAL (DECL))) \
736 { \
737 (* targetm.encode_section_info) (DECL, DECL_RTL (DECL), false); \
738 machopic_define_symbol (DECL_RTL (DECL)); \
739 } \
740 } while (0)
741
742 /* The maximum alignment which the object file format can support in
743 bits. For Mach-O, this is 2^15 bytes. */
744
745 #undef MAX_OFILE_ALIGNMENT
746 #define MAX_OFILE_ALIGNMENT (0x8000 * 8)
747
748 /* Declare the section variables. */
749 #ifndef USED_FOR_TARGET
750 enum darwin_section_enum {
751 #define DEF_SECTION(NAME, FLAGS, DIRECTIVE, OBJC) NAME,
752 #include "darwin-sections.def"
753 #undef DEF_SECTION
754 NUM_DARWIN_SECTIONS
755 };
756 extern GTY(()) section * darwin_sections[NUM_DARWIN_SECTIONS];
757 #endif
758
759 #undef TARGET_ASM_SELECT_SECTION
760 #define TARGET_ASM_SELECT_SECTION machopic_select_section
761 #define USE_SELECT_SECTION_FOR_FUNCTIONS
762
763 #undef TARGET_ASM_SELECT_RTX_SECTION
764 #define TARGET_ASM_SELECT_RTX_SECTION machopic_select_rtx_section
765 #undef TARGET_ASM_UNIQUE_SECTION
766 #define TARGET_ASM_UNIQUE_SECTION darwin_unique_section
767 #undef TARGET_ASM_FUNCTION_RODATA_SECTION
768 #define TARGET_ASM_FUNCTION_RODATA_SECTION default_no_function_rodata_section
769 #undef TARGET_ASM_RELOC_RW_MASK
770 #define TARGET_ASM_RELOC_RW_MASK machopic_reloc_rw_mask
771
772
773 #define ASM_DECLARE_UNRESOLVED_REFERENCE(FILE,NAME) \
774 do { \
775 if (FILE) { \
776 if (MACHOPIC_INDIRECT) \
777 fprintf (FILE, "\t.lazy_reference "); \
778 else \
779 fprintf (FILE, "\t.reference "); \
780 assemble_name (FILE, NAME); \
781 fprintf (FILE, "\n"); \
782 } \
783 } while (0)
784
785 #define ASM_DECLARE_CLASS_REFERENCE(FILE,NAME) \
786 do { \
787 if (FILE) { \
788 fprintf (FILE, "\t"); \
789 assemble_name (FILE, NAME); \
790 fprintf (FILE, "=0\n"); \
791 (*targetm.asm_out.globalize_label) (FILE, NAME); \
792 } \
793 } while (0)
794
795 /* Globalizing directive for a label. */
796 #define GLOBAL_ASM_OP "\t.globl "
797 #define TARGET_ASM_GLOBALIZE_LABEL darwin_globalize_label
798
799 /* Emit an assembler directive to set visibility for a symbol. Used
800 to support visibility attribute and Darwin's private extern
801 feature. */
802 #undef TARGET_ASM_ASSEMBLE_VISIBILITY
803 #define TARGET_ASM_ASSEMBLE_VISIBILITY darwin_assemble_visibility
804
805 /* Extra attributes for Darwin. */
806 #define SUBTARGET_ATTRIBUTE_TABLE \
807 /* { name, min_len, max_len, decl_req, type_req, fn_type_req, handler } */ \
808 { "apple_kext_compatibility", 0, 0, false, true, false, \
809 darwin_handle_kext_attribute }, \
810 { "weak_import", 0, 0, true, false, false, \
811 darwin_handle_weak_import_attribute }
812
813 #undef ASM_GENERATE_INTERNAL_LABEL
814 #define ASM_GENERATE_INTERNAL_LABEL(LABEL,PREFIX,NUM) \
815 sprintf (LABEL, "*%s%ld", PREFIX, (long)(NUM))
816
817 #undef TARGET_ASM_MARK_DECL_PRESERVED
818 #define TARGET_ASM_MARK_DECL_PRESERVED darwin_mark_decl_preserved
819
820 /* Set on a symbol with SYMBOL_FLAG_FUNCTION or
821 MACHO_SYMBOL_FLAG_VARIABLE to indicate that the function or
822 variable has been defined in this translation unit.
823 When porting Mach-O to new architectures you need to make
824 sure these aren't clobbered by the backend. */
825
826 #define MACHO_SYMBOL_FLAG_VARIABLE (SYMBOL_FLAG_MACH_DEP)
827 #define MACHO_SYMBOL_FLAG_DEFINED ((SYMBOL_FLAG_MACH_DEP) << 1)
828
829 /* Set on a symbol to indicate when fix-and-continue style code
830 generation is being used and the symbol refers to a static symbol
831 that should be rebound from new instances of a translation unit to
832 the original instance of the data. */
833
834 #define MACHO_SYMBOL_STATIC ((SYMBOL_FLAG_MACH_DEP) << 2)
835
836 /* Symbolic names for various things we might know about a symbol. */
837
838 enum machopic_addr_class {
839 MACHOPIC_UNDEFINED,
840 MACHOPIC_DEFINED_DATA,
841 MACHOPIC_UNDEFINED_DATA,
842 MACHOPIC_DEFINED_FUNCTION,
843 MACHOPIC_UNDEFINED_FUNCTION
844 };
845
846 /* Macros defining the various PIC cases. */
847
848 #define MACHO_DYNAMIC_NO_PIC_P (TARGET_DYNAMIC_NO_PIC)
849 #define MACHOPIC_INDIRECT (flag_pic || MACHO_DYNAMIC_NO_PIC_P)
850 #define MACHOPIC_JUST_INDIRECT (MACHO_DYNAMIC_NO_PIC_P)
851 #define MACHOPIC_PURE (flag_pic && ! MACHO_DYNAMIC_NO_PIC_P)
852
853 #undef TARGET_ENCODE_SECTION_INFO
854 #define TARGET_ENCODE_SECTION_INFO darwin_encode_section_info
855 #undef TARGET_STRIP_NAME_ENCODING
856 #define TARGET_STRIP_NAME_ENCODING default_strip_name_encoding
857
858 #define GEN_BINDER_NAME_FOR_STUB(BUF,STUB,STUB_LENGTH) \
859 do { \
860 const char *const stub_ = (STUB); \
861 char *buffer_ = (BUF); \
862 strcpy (buffer_, stub_); \
863 if (stub_[0] == '"') \
864 { \
865 strcpy (buffer_ + (STUB_LENGTH) - 1, "_binder\""); \
866 } \
867 else \
868 { \
869 strcpy (buffer_ + (STUB_LENGTH), "_binder"); \
870 } \
871 } while (0)
872
873 #define GEN_SYMBOL_NAME_FOR_SYMBOL(BUF,SYMBOL,SYMBOL_LENGTH) \
874 do { \
875 const char *const symbol_ = (SYMBOL); \
876 char *buffer_ = (BUF); \
877 if (name_needs_quotes (symbol_) && symbol_[0] != '"') \
878 { \
879 sprintf (buffer_, "\"%s\"", symbol_); \
880 } \
881 else \
882 { \
883 strcpy (buffer_, symbol_); \
884 } \
885 } while (0)
886
887 /* Given a symbol name string, create the lazy pointer version
888 of the symbol name. */
889
890 #define GEN_LAZY_PTR_NAME_FOR_SYMBOL(BUF,SYMBOL,SYMBOL_LENGTH) \
891 do { \
892 const char *symbol_ = (SYMBOL); \
893 char *buffer_ = (BUF); \
894 if (symbol_[0] == '"') \
895 { \
896 strcpy (buffer_, "\"L"); \
897 strcpy (buffer_ + 2, symbol_ + 1); \
898 strcpy (buffer_ + (SYMBOL_LENGTH), "$lazy_ptr\""); \
899 } \
900 else if (name_needs_quotes (symbol_)) \
901 { \
902 strcpy (buffer_, "\"L"); \
903 strcpy (buffer_ + 2, symbol_); \
904 strcpy (buffer_ + (SYMBOL_LENGTH) + 2, "$lazy_ptr\""); \
905 } \
906 else \
907 { \
908 strcpy (buffer_, "L"); \
909 strcpy (buffer_ + 1, symbol_); \
910 strcpy (buffer_ + (SYMBOL_LENGTH) + 1, "$lazy_ptr"); \
911 } \
912 } while (0)
913
914 #define EH_FRAME_SECTION_NAME "__TEXT"
915 #define EH_FRAME_SECTION_ATTR ",coalesced,no_toc+strip_static_syms+live_support"
916
917 /* Java runtime class list. */
918 #define JCR_SECTION_NAME "__DATA,jcr,regular,no_dead_strip"
919
920 #undef ASM_PREFERRED_EH_DATA_FORMAT
921 #define ASM_PREFERRED_EH_DATA_FORMAT(CODE,GLOBAL) \
922 (((CODE) == 2 && (GLOBAL) == 1) \
923 ? (DW_EH_PE_pcrel | DW_EH_PE_indirect | DW_EH_PE_sdata4) : \
924 ((CODE) == 1 || (GLOBAL) == 0) ? DW_EH_PE_pcrel : DW_EH_PE_absptr)
925
926 #define ASM_OUTPUT_DWARF_DELTA(FILE,SIZE,LABEL1,LABEL2) \
927 darwin_asm_output_dwarf_delta (FILE, SIZE, LABEL1, LABEL2)
928
929 #define ASM_OUTPUT_DWARF_OFFSET(FILE,SIZE,LABEL,BASE) \
930 darwin_asm_output_dwarf_offset (FILE, SIZE, LABEL, BASE)
931
932 #define ASM_MAYBE_OUTPUT_ENCODED_ADDR_RTX(ASM_OUT_FILE, ENCODING, SIZE, ADDR, DONE) \
933 if (ENCODING == ASM_PREFERRED_EH_DATA_FORMAT (2, 1)) { \
934 darwin_non_lazy_pcrel (ASM_OUT_FILE, ADDR); \
935 goto DONE; \
936 }
937
938 /* Experimentally, putting jump tables in text is faster on SPEC.
939 Also this is needed for correctness for coalesced functions. */
940
941 #ifndef JUMP_TABLES_IN_TEXT_SECTION
942 #define JUMP_TABLES_IN_TEXT_SECTION 1
943 #endif
944
945 #define TARGET_TERMINATE_DW2_EH_FRAME_INFO false
946
947 #define TARGET_ASM_INIT_SECTIONS darwin_init_sections
948 #undef TARGET_ASM_NAMED_SECTION
949 #define TARGET_ASM_NAMED_SECTION darwin_asm_named_section
950
951 /* Handle pragma weak and pragma pack. */
952 #define HANDLE_SYSV_PRAGMA 1
953
954 #define HANDLE_PRAGMA_PACK_PUSH_POP 1
955
956 #define DARWIN_REGISTER_TARGET_PRAGMAS() \
957 do { \
958 if (!flag_preprocess_only) \
959 cpp_register_pragma (parse_in, NULL, "mark", \
960 darwin_pragma_ignore, false); \
961 c_register_pragma (0, "options", darwin_pragma_options); \
962 c_register_pragma (0, "segment", darwin_pragma_ignore); \
963 c_register_pragma (0, "unused", darwin_pragma_unused); \
964 c_register_pragma (0, "ms_struct", darwin_pragma_ms_struct); \
965 } while (0)
966
967 #undef ASM_APP_ON
968 #define ASM_APP_ON ""
969 #undef ASM_APP_OFF
970 #define ASM_APP_OFF ""
971
972 void darwin_register_frameworks (const char *, const char *, int);
973 void darwin_register_objc_includes (const char *, const char *, int);
974 #define TARGET_EXTRA_PRE_INCLUDES darwin_register_objc_includes
975 #define TARGET_EXTRA_INCLUDES darwin_register_frameworks
976
977 void add_framework_path (char *);
978 #define TARGET_OPTF add_framework_path
979
980 #define TARGET_POSIX_IO
981
982 /* All new versions of Darwin have C99 functions. */
983
984 #define TARGET_C99_FUNCTIONS 1
985
986 #define WINT_TYPE "int"
987
988 /* Every program on darwin links against libSystem which contains the pthread
989 routines, so there's no need to explicitly call out when doing threaded
990 work. */
991
992 #undef GOMP_SELF_SPECS
993 #define GOMP_SELF_SPECS ""
994
995 /* Darwin can't support anchors until we can cope with the adjustments
996 to size that ASM_DECLARE_OBJECT_NAME and ASM_DECLARE_CONSTANT_NAME
997 when outputting members of an anchor block and the linker can be
998 taught to keep them together or we find some other suitable
999 code-gen technique. */
1000
1001 #if 0
1002 #define TARGET_ASM_OUTPUT_ANCHOR darwin_asm_output_anchor
1003 #else
1004 #define TARGET_ASM_OUTPUT_ANCHOR NULL
1005 #endif
1006
1007 /* Attempt to turn on execute permission for the stack. This may be
1008 used by TARGET_TRAMPOLINE_INIT if the target needs it (that is,
1009 if the target machine can change execute permissions on a page).
1010
1011 There is no way to query the execute permission of the stack, so
1012 we always issue the mprotect() call.
1013
1014 Unfortunately it is not possible to make this namespace-clean.
1015
1016 Also note that no errors should be emitted by this code; it is
1017 considered dangerous for library calls to send messages to
1018 stdout/stderr. */
1019
1020 #define ENABLE_EXECUTE_STACK \
1021 extern void __enable_execute_stack (void *); \
1022 void \
1023 __enable_execute_stack (void *addr) \
1024 { \
1025 extern int mprotect (void *, size_t, int); \
1026 extern int getpagesize (void); \
1027 static int size; \
1028 static long mask; \
1029 \
1030 char *page, *end; \
1031 \
1032 if (size == 0) \
1033 { \
1034 size = getpagesize(); \
1035 mask = ~((long) size - 1); \
1036 } \
1037 \
1038 page = (char *) (((long) addr) & mask); \
1039 end = (char *) ((((long) (addr + (TARGET_64BIT ? 48 : 40))) & mask) + size); \
1040 \
1041 /* 7 == PROT_READ | PROT_WRITE | PROT_EXEC */ \
1042 (void) mprotect (page, end - page, 7); \
1043 }
1044
1045 /* For Apple KEXTs, we make the constructors return this to match gcc
1046 2.95. */
1047 #define TARGET_CXX_CDTOR_RETURNS_THIS (darwin_kextabi_p)
1048 extern int flag_mkernel;
1049 extern int flag_apple_kext;
1050 #define TARGET_KEXTABI flag_apple_kext
1051
1052 #define TARGET_HAS_TARGETCM 1
1053
1054 #ifndef CROSS_DIRECTORY_STRUCTURE
1055 extern void darwin_default_min_version (int * argc, char *** argv);
1056 #define GCC_DRIVER_HOST_INITIALIZATION \
1057 darwin_default_min_version (&argc, &argv)
1058 #endif /* CROSS_DIRECTORY_STRUCTURE */
1059
1060 /* The Apple assembler and linker do not support constructor priorities. */
1061 #undef SUPPORTS_INIT_PRIORITY
1062 #define SUPPORTS_INIT_PRIORITY 0
1063
1064 #endif /* CONFIG_DARWIN_H */
GCC graphite test results