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.
7 This file is part of GCC.
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)
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.
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.
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/>. */
28 #ifndef CONFIG_DARWIN_H
29 #define CONFIG_DARWIN_H
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. */
38 /* Although NeXT ran on many different architectures, as of Jan 2001
39 the only supported Darwin targets are PowerPC and x86. */
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. */
45 #define OBJECT_FORMAT_MACHO
47 /* Don't assume anything about the header files. */
48 #define NO_IMPLICIT_EXTERN_C
50 /* Suppress g++ attempt to link in the math library automatically. */
51 #define MATH_LIBRARY ""
57 /* Define an empty body for the function do_global_dtors() in libgcc2.c. */
59 #define DO_GLOBAL_DTORS_BODY
61 /* The string value for __SIZE_TYPE__. */
64 #define SIZE_TYPE "long unsigned int"
67 /* Type used for ptrdiff_t, as a string used in a declaration. */
70 #define PTRDIFF_TYPE "int"
75 #define WCHAR_TYPE "int"
76 #undef WCHAR_TYPE_SIZE
77 #define WCHAR_TYPE_SIZE 32
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"
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"
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"
106 #define INTPTR_TYPE "long int"
107 #define UINTPTR_TYPE "long unsigned int"
109 #define SIG_ATOMIC_TYPE "int"
111 /* Default to using the NeXT-style runtime, since that's what is
112 pre-installed on Darwin systems. */
114 #define NEXT_OBJC_RUNTIME
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. */
119 #undef DEFAULT_PCC_STRUCT_RETURN
120 #define DEFAULT_PCC_STRUCT_RETURN 0
122 /* True if pragma ms_struct is in effect. */
123 extern GTY(()) int darwin_ms_struct;
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.
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.)
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.
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
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
191 #define SUBSUBTARGET_OVERRIDE_OPTIONS \
193 darwin_override_options (); \
196 /* These compiler options take n arguments. */
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 !strcmp (STR, "iframework") ? 1 : \
242 #define SUBTARGET_C_COMMON_OVERRIDE_OPTIONS do { \
243 if (flag_mkernel || flag_apple_kext) \
245 if (flag_use_cxa_atexit == 2) \
246 flag_use_cxa_atexit = 0; \
247 /* kexts should always be built without the coalesced sections \
248 because the kernel loader doesn't grok such sections. */ \
250 /* No RTTI in kexts. */ \
255 /* Machine dependent cpp options. Don't add more options here, add
256 them to darwin_cpp_builtins in darwin-c.c. */
259 #define CPP_SPEC "%{static:%{!dynamic:-D__STATIC__}}%{!static:-D__DYNAMIC__}" \
260 " %{pthread:-D_REENTRANT}"
262 /* This is mostly a clone of the standard LINK_COMMAND_SPEC, plus
263 precomp, libtool, and fat build additions. Also we
264 don't specify a second %G after %L because libSystem is
265 self-contained and doesn't need to link against libgcc.a. */
266 /* In general, random Darwin linker flags should go into LINK_SPEC
267 instead of LINK_COMMAND_SPEC. The command spec is better for
268 specifying the handling of options understood by generic Unix
269 linkers, and for positional arguments like libraries. */
271 #define LINK_COMMAND_SPEC_A \
272 "%{!fdump=*:%{!fsyntax-only:%{!c:%{!M:%{!MM:%{!E:%{!S:\
273 %(linker) %l %X %{d} %{s} %{t} %{Z} %{u*} \
274 %{A} %{e*} %{m} %{r} %{x} \
275 %{o*}%{!o:-o a.out} \
276 %{!A:%{!nostdlib:%{!nostartfiles:%S}}} \
277 %{L*} %(link_libgcc) %o %{fprofile-arcs|fprofile-generate*|coverage:-lgcov} \
279 %{fopenmp|ftree-parallelize-loops=*: \
280 %{static|static-libgcc|static-libstdc++|static-libgfortran: libgomp.a%s; : -lgomp } } \
281 %{!nostdlib:%{!nodefaultlibs: %(link_ssp) %G %L }} \
282 %{!A:%{!nostdlib:%{!nostartfiles:%E}}} %{T*} %{F*} }}}}}}}\n"
284 #define DSYMUTIL "dsymutil"
286 #define DSYMUTIL_SPEC \
287 "%{!fdump=*:%{!fsyntax-only:%{!c:%{!M:%{!MM:%{!E:%{!S:\
288 %{.c|.cc|.C|.cpp|.cp|.c++|.cxx|.CPP|.m|.mm: \
289 %{gdwarf-2:%{!gstabs*:%{!g0: " DSYMUTIL " %{o*:%*}%{!o:a.out}}}}}}}}}}}}"
291 #define LINK_COMMAND_SPEC LINK_COMMAND_SPEC_A DSYMUTIL_SPEC
293 #ifdef TARGET_SYSTEM_ROOT
294 #define LINK_SYSROOT_SPEC \
295 "%{isysroot*:-syslibroot %*;:-syslibroot " TARGET_SYSTEM_ROOT "}"
297 #define LINK_SYSROOT_SPEC "%{isysroot*:-syslibroot %*}"
300 /* Please keep the random linker options in alphabetical order (modulo
301 'Z' and 'no' prefixes). Note that options taking arguments may appear
302 multiple times on a command line with different arguments each time,
303 so put a * after their names so all of them get passed. */
305 "%{static}%{!static:-dynamic} \
306 %:remove-outfile(-ldl) \
307 %:remove-outfile(-lm) \
308 %:remove-outfile(-lpthread) \
309 %{fgnu-runtime: %{static|static-libgcc: \
310 %:replace-outfile(-lobjc libobjc-gnu.a%s); \
311 :%:replace-outfile(-lobjc -lobjc-gnu ) } }\
312 %{static|static-libgcc|static-libgfortran:%:replace-outfile(-lgfortran libgfortran.a%s)}\
313 %{static|static-libgcc|static-libstdc++|static-libgfortran:%:replace-outfile(-lgomp libgomp.a%s)}\
314 %{static|static-libgcc|static-libstdc++:%:replace-outfile(-lstdc++ libstdc++.a%s)}\
316 %{Zforce_cpusubtype_ALL:-arch %(darwin_arch) -force_cpusubtype_ALL} \
317 %{!Zforce_cpusubtype_ALL:-arch %(darwin_subarch)} \
319 %{Zbundle_loader*:-bundle_loader %*} \
321 %{compatibility_version*:%e-compatibility_version only allowed with -dynamiclib\
323 %{current_version*:%e-current_version only allowed with -dynamiclib} \
324 %{Zforce_flat_namespace:-force_flat_namespace} \
325 %{Zinstall_name*:%e-install_name only allowed with -dynamiclib} \
326 %{keep_private_externs} \
329 %{Zdynamiclib: -dylib \
330 %{Zbundle:%e-bundle not allowed with -dynamiclib} \
331 %{Zbundle_loader*:%e-bundle_loader not allowed with -dynamiclib} \
332 %{client_name*:%e-client_name not allowed with -dynamiclib} \
333 %{compatibility_version*:-dylib_compatibility_version %*} \
334 %{current_version*:-dylib_current_version %*} \
335 %{Zforce_cpusubtype_ALL:-arch %(darwin_arch)} \
336 %{!Zforce_cpusubtype_ALL: -arch %(darwin_subarch)} \
337 %{Zforce_flat_namespace:%e-force_flat_namespace not allowed with -dynamiclib} \
338 %{Zinstall_name*:-dylib_install_name %*} \
339 %{keep_private_externs:%e-keep_private_externs not allowed with -dynamiclib} \
340 %{private_bundle:%e-private_bundle not allowed with -dynamiclib} \
342 %{Zall_load:-all_load} \
343 %{Zallowable_client*:-allowable_client %*} \
344 %{Zbind_at_load:-bind_at_load} \
345 %{Zarch_errors_fatal:-arch_errors_fatal} \
346 %{Zdead_strip:-dead_strip} \
347 %{Zno_dead_strip_inits_and_terms:-no_dead_strip_inits_and_terms} \
348 %{Zdylib_file*:-dylib_file %*} \
349 %{Zdynamic:-dynamic}\
350 %{Zexported_symbols_list*:-exported_symbols_list %*} \
351 %{Zflat_namespace:-flat_namespace} \
352 %{headerpad_max_install_names*} \
353 %{Zimage_base*:-image_base %*} \
355 %{!mmacosx-version-min=*:-macosx_version_min %(darwin_minversion)} \
356 %{mmacosx-version-min=*:-macosx_version_min %*} \
358 %{Zmulti_module:-multi_module} %{Zsingle_module:-single_module} \
359 %{Zmultiply_defined*:-multiply_defined %*} \
360 %{!Zmultiply_defined*:%{shared-libgcc: \
361 %:version-compare(< 10.5 mmacosx-version-min= -multiply_defined) \
362 %:version-compare(< 10.5 mmacosx-version-min= suppress)}} \
363 %{Zmultiplydefinedunused*:-multiply_defined_unused %*} \
365 %{prebind} %{noprebind} %{nofixprebinding} %{prebind_all_twolevel_modules} \
366 %{read_only_relocs} \
367 %{sectcreate*} %{sectorder*} %{seg1addr*} %{segprot*} \
368 %{Zsegaddr*:-segaddr %*} \
369 %{Zsegs_read_only_addr*:-segs_read_only_addr %*} \
370 %{Zsegs_read_write_addr*:-segs_read_write_addr %*} \
371 %{Zseg_addr_table*: -seg_addr_table %*} \
372 %{Zfn_seg_addr_table_filename*:-seg_addr_table_filename %*} \
373 %{sub_library*} %{sub_umbrella*} \
374 " LINK_SYSROOT_SPEC " \
375 %{twolevel_namespace} %{twolevel_namespace_hints} \
376 %{Zumbrella*: -umbrella %*} \
378 %{Zunexported_symbols_list*:-unexported_symbols_list %*} \
379 %{Zweak_reference_mismatches*:-weak_reference_mismatches %*} \
380 %{!Zweak_reference_mismatches*:-weak_reference_mismatches non-weak} \
384 %{pagezero_size*} %{segs_read_*} %{seglinkedit} %{noseglinkedit} \
385 %{sectalign*} %{sectobjectsymbols*} %{segcreate*} %{whyload} \
386 %{whatsloaded} %{dylinker_install_name*} \
387 %{dylinker} %{Mach} "
390 /* Machine dependent libraries. */
392 #define LIB_SPEC "%{!static:-lSystem}"
394 /* Support -mmacosx-version-min by supplying different (stub) libgcc_s.dylib
395 libraries to link against, and by not linking against libgcc_s on
398 Note that by default, -lgcc_eh is not linked against! This is
399 because in a future version of Darwin the EH frame information may
400 be in a new format, or the fallback routine might be changed; if
401 you want to explicitly link against the static version of those
402 routines, because you know you don't need to unwind through system
403 libraries, you need to explicitly say -static-libgcc.
405 If it is linked against, it has to be before -lgcc, because it may
406 need symbols from -lgcc. */
407 #undef REAL_LIBGCC_SPEC
408 #define REAL_LIBGCC_SPEC \
409 "%{static-libgcc|static: -lgcc_eh -lgcc; \
410 shared-libgcc|fexceptions|fgnu-runtime: \
411 %:version-compare(!> 10.5 mmacosx-version-min= -lgcc_s.10.4) \
412 %:version-compare(>< 10.5 10.6 mmacosx-version-min= -lgcc_s.10.5) \
413 %:version-compare(!> 10.5 mmacosx-version-min= -lgcc_ext.10.4) \
414 %:version-compare(>= 10.5 mmacosx-version-min= -lgcc_ext.10.5) \
416 :%:version-compare(>< 10.3.9 10.5 mmacosx-version-min= -lgcc_s.10.4) \
417 %:version-compare(>< 10.5 10.6 mmacosx-version-min= -lgcc_s.10.5) \
418 %:version-compare(!> 10.5 mmacosx-version-min= -lgcc_ext.10.4) \
419 %:version-compare(>= 10.5 mmacosx-version-min= -lgcc_ext.10.5) \
422 /* We specify crt0.o as -lcrt0.o so that ld will search the library path.
424 crt3.o provides __cxa_atexit on systems that don't have it. Since
425 it's only used with C++, which requires passing -shared-libgcc, key
426 off that to avoid unnecessarily adding a destructor to every
427 powerpc program built. */
429 #undef STARTFILE_SPEC
430 #define STARTFILE_SPEC \
431 "%{Zdynamiclib: %(darwin_dylib1) } \
432 %{!Zdynamiclib:%{Zbundle:%{!static:-lbundle1.o}} \
433 %{!Zbundle:%{pg:%{static:-lgcrt0.o} \
434 %{!static:%{object:-lgcrt0.o} \
435 %{!object:%{preload:-lgcrt0.o} \
436 %{!preload:-lgcrt1.o %(darwin_crt2)}}}} \
437 %{!pg:%{static:-lcrt0.o} \
438 %{!static:%{object:-lcrt0.o} \
439 %{!object:%{preload:-lcrt0.o} \
440 %{!preload: %(darwin_crt1) \
441 %(darwin_crt2)}}}}}} \
442 %{shared-libgcc:%:version-compare(< 10.5 mmacosx-version-min= crt3.o%s)}"
444 /* The native Darwin linker doesn't necessarily place files in the order
445 that they're specified on the link line. Thus, it is pointless
446 to put anything in ENDFILE_SPEC. */
447 /* #define ENDFILE_SPEC "" */
449 #define DARWIN_EXTRA_SPECS \
450 { "darwin_crt1", DARWIN_CRT1_SPEC }, \
451 { "darwin_dylib1", DARWIN_DYLIB1_SPEC }, \
452 { "darwin_minversion", DARWIN_MINVERSION_SPEC },
454 #define DARWIN_DYLIB1_SPEC \
455 "%:version-compare(!> 10.5 mmacosx-version-min= -ldylib1.o) \
456 %:version-compare(>= 10.5 mmacosx-version-min= -ldylib1.10.5.o)"
458 #define DARWIN_CRT1_SPEC \
459 "%:version-compare(!> 10.5 mmacosx-version-min= -lcrt1.o) \
460 %:version-compare(>= 10.5 mmacosx-version-min= -lcrt1.10.5.o)"
462 /* Default Darwin ASM_SPEC, very simple. */
463 #define ASM_SPEC "-arch %(darwin_arch) \
464 %{Zforce_cpusubtype_ALL:-force_cpusubtype_ALL}"
466 /* We still allow output of STABS. */
468 #define DBX_DEBUGGING_INFO 1
470 #define DWARF2_DEBUGGING_INFO 1
471 #define PREFERRED_DEBUGGING_TYPE DBX_DEBUG
473 #define DEBUG_FRAME_SECTION "__DWARF,__debug_frame,regular,debug"
474 #define DEBUG_INFO_SECTION "__DWARF,__debug_info,regular,debug"
475 #define DEBUG_ABBREV_SECTION "__DWARF,__debug_abbrev,regular,debug"
476 #define DEBUG_ARANGES_SECTION "__DWARF,__debug_aranges,regular,debug"
477 #define DEBUG_MACINFO_SECTION "__DWARF,__debug_macinfo,regular,debug"
478 #define DEBUG_LINE_SECTION "__DWARF,__debug_line,regular,debug"
479 #define DEBUG_LOC_SECTION "__DWARF,__debug_loc,regular,debug"
480 #define DEBUG_PUBNAMES_SECTION "__DWARF,__debug_pubnames,regular,debug"
481 #define DEBUG_PUBTYPES_SECTION "__DWARF,__debug_pubtypes,regular,debug"
482 #define DEBUG_STR_SECTION "__DWARF,__debug_str,regular,debug"
483 #define DEBUG_RANGES_SECTION "__DWARF,__debug_ranges,regular,debug"
485 #define TARGET_WANT_DEBUG_PUB_SECTIONS true
487 /* When generating stabs debugging, use N_BINCL entries. */
489 #define DBX_USE_BINCL
491 /* There is no limit to the length of stabs strings. */
493 #define DBX_CONTIN_LENGTH 0
495 /* gdb needs a null N_SO at the end of each file for scattered loading. */
497 #define DBX_OUTPUT_NULL_N_SO_AT_MAIN_SOURCE_FILE_END
499 /* GCC's definition of 'one_only' is the same as its definition of 'weak'. */
500 #define MAKE_DECL_ONE_ONLY(DECL) (DECL_WEAK (DECL) = 1)
502 /* Mach-O supports 'weak imports', and 'weak definitions' in coalesced
503 sections. machopic_select_section ensures that weak variables go in
504 coalesced sections. Weak aliases (or any other kind of aliases) are
505 not supported. Weak symbols that aren't visible outside the .s file
506 are not supported. */
507 #define ASM_WEAKEN_DECL(FILE, DECL, NAME, ALIAS) \
511 warning (0, "alias definitions not supported in Mach-O; ignored"); \
515 if (! DECL_EXTERNAL (DECL) && TREE_PUBLIC (DECL)) \
516 targetm.asm_out.globalize_label (FILE, NAME); \
517 if (DECL_EXTERNAL (DECL)) \
518 fputs ("\t.weak_reference ", FILE); \
519 else if (lookup_attribute ("weak_import", DECL_ATTRIBUTES (DECL))) \
521 else if (TREE_PUBLIC (DECL)) \
522 fputs ("\t.weak_definition ", FILE); \
525 assemble_name (FILE, NAME); \
526 fputc ('\n', FILE); \
529 /* Darwin has the pthread routines in libSystem, which every program
530 links to, so there's no need for weak-ness for that. */
531 #define GTHREAD_USE_WEAK 0
533 /* The Darwin linker imposes two limitations on common symbols: they
534 can't have hidden visibility, and they can't appear in dylibs. As
535 a consequence, we should never use common symbols to represent
537 #undef USE_COMMON_FOR_ONE_ONLY
538 #define USE_COMMON_FOR_ONE_ONLY 0
540 /* The Darwin linker doesn't want coalesced symbols to appear in
541 a static archive's table of contents. */
542 #undef TARGET_WEAK_NOT_IN_ARCHIVE_TOC
543 #define TARGET_WEAK_NOT_IN_ARCHIVE_TOC 1
545 /* On Darwin, we don't (at the time of writing) have linkonce sections
546 with names, so it's safe to make the class data not comdat. */
547 #define TARGET_CXX_CLASS_DATA_ALWAYS_COMDAT hook_bool_void_false
549 /* For efficiency, on Darwin the RTTI information that is always
550 emitted in the standard C++ library should not be COMDAT. */
551 #define TARGET_CXX_LIBRARY_RTTI_COMDAT hook_bool_void_false
553 /* We make exception information linkonce. */
554 #undef TARGET_USES_WEAK_UNWIND_INFO
555 #define TARGET_USES_WEAK_UNWIND_INFO 1
557 /* We need to use a nonlocal label for the start of an EH frame: the
558 Darwin linker requires that a coalesced section start with a label.
559 Unfortunately, it also requires that 'debug' sections don't contain
561 #undef FRAME_BEGIN_LABEL
562 #define FRAME_BEGIN_LABEL (for_eh ? "EH_frame" : "Lframe")
564 /* Emit a label for the FDE corresponding to DECL. EMPTY means
565 emit a label for an empty FDE. */
566 #define TARGET_ASM_EMIT_UNWIND_LABEL darwin_emit_unwind_label
568 /* Emit a label to separate the exception table. */
569 #define TARGET_ASM_EMIT_EXCEPT_TABLE_LABEL darwin_emit_except_table_label
571 /* Our profiling scheme doesn't LP labels and counter words. */
573 #define NO_PROFILE_COUNTERS 1
575 #undef INIT_SECTION_ASM_OP
576 #define INIT_SECTION_ASM_OP
580 #define TARGET_ASM_CONSTRUCTOR machopic_asm_out_constructor
581 #define TARGET_ASM_DESTRUCTOR machopic_asm_out_destructor
583 /* Always prefix with an underscore. */
585 #define USER_LABEL_PREFIX "_"
587 /* A dummy symbol that will be replaced with the function base name. */
588 #define MACHOPIC_FUNCTION_BASE_NAME "<pic base>"
590 /* Don't output a .file directive. That is only used by the assembler for
592 #undef TARGET_ASM_FILE_START_FILE_DIRECTIVE
593 #define TARGET_ASM_FILE_START_FILE_DIRECTIVE false
595 #undef TARGET_ASM_FILE_END
596 #define TARGET_ASM_FILE_END darwin_file_end
598 /* Because Mach-O relocations have a counter from 1 to 255 for the
599 section number they apply to, it is necessary to output all
600 normal sections before the LTO sections, to make sure that the
601 sections that may have relocations always have a section number
603 #undef TARGET_ASM_LTO_START
604 #define TARGET_ASM_LTO_START darwin_asm_lto_start
605 #undef TARGET_ASM_LTO_END
606 #define TARGET_ASM_LTO_END darwin_asm_lto_end
608 #define ASM_OUTPUT_SKIP(FILE,SIZE) \
609 fprintf (FILE, "\t.space "HOST_WIDE_INT_PRINT_UNSIGNED"\n", SIZE)
611 /* Give ObjC methods pretty symbol names. */
613 #undef OBJC_GEN_METHOD_LABEL
614 #define OBJC_GEN_METHOD_LABEL(BUF,IS_INST,CLASS_NAME,CAT_NAME,SEL_NAME,NUM) \
616 sprintf (BUF, "%c[%s(%s) %s]", (IS_INST) ? '-' : '+', \
617 (CLASS_NAME), (CAT_NAME), (SEL_NAME)); \
619 sprintf (BUF, "%c[%s %s]", (IS_INST) ? '-' : '+', \
620 (CLASS_NAME), (SEL_NAME)); \
623 /* The RTTI data (e.g., __ti4name) is common and public (and static),
624 but it does need to be referenced via indirect PIC data pointers.
625 The machopic_define_symbol calls are telling the machopic subsystem
626 that the name *is* defined in this module, so it doesn't need to
627 make them indirect. */
629 #undef ASM_DECLARE_OBJECT_NAME
630 #define ASM_DECLARE_OBJECT_NAME(FILE, NAME, DECL) \
632 const char *xname = NAME; \
633 if (GET_CODE (XEXP (DECL_RTL (DECL), 0)) != SYMBOL_REF) \
634 xname = IDENTIFIER_POINTER (DECL_NAME (DECL)); \
635 if (! DECL_WEAK (DECL) \
636 && ((TREE_STATIC (DECL) \
637 && (!DECL_COMMON (DECL) || !TREE_PUBLIC (DECL))) \
638 || DECL_INITIAL (DECL))) \
639 machopic_define_symbol (DECL_RTL (DECL)); \
640 if ((TREE_STATIC (DECL) \
641 && (!DECL_COMMON (DECL) || !TREE_PUBLIC (DECL))) \
642 || DECL_INITIAL (DECL)) \
643 (* targetm.encode_section_info) (DECL, DECL_RTL (DECL), false); \
644 ASM_OUTPUT_LABEL (FILE, xname); \
645 /* Darwin doesn't support zero-size objects, so give them a \
647 if (tree_low_cst (DECL_SIZE_UNIT (DECL), 1) == 0) \
648 assemble_zeros (1); \
651 #define ASM_DECLARE_FUNCTION_NAME(FILE, NAME, DECL) \
653 const char *xname = NAME; \
654 if (GET_CODE (XEXP (DECL_RTL (DECL), 0)) != SYMBOL_REF) \
655 xname = IDENTIFIER_POINTER (DECL_NAME (DECL)); \
656 if (! DECL_WEAK (DECL) \
657 && ((TREE_STATIC (DECL) \
658 && (!DECL_COMMON (DECL) || !TREE_PUBLIC (DECL))) \
659 || DECL_INITIAL (DECL))) \
660 machopic_define_symbol (DECL_RTL (DECL)); \
661 if ((TREE_STATIC (DECL) \
662 && (!DECL_COMMON (DECL) || !TREE_PUBLIC (DECL))) \
663 || DECL_INITIAL (DECL)) \
664 (* targetm.encode_section_info) (DECL, DECL_RTL (DECL), false); \
665 ASM_OUTPUT_FUNCTION_LABEL (FILE, xname, DECL); \
668 #undef TARGET_ASM_DECLARE_CONSTANT_NAME
669 #define TARGET_ASM_DECLARE_CONSTANT_NAME darwin_asm_declare_constant_name
671 /* Wrap new method names in quotes so the assembler doesn't gag.
672 Make Objective-C internal symbols local and in doing this, we need
673 to accommodate the name mangling done by c++ on file scope locals. */
676 int darwin_label_is_anonymous_local_objc_name (const char *name);
678 #undef ASM_OUTPUT_LABELREF
679 #define ASM_OUTPUT_LABELREF(FILE,NAME) \
681 const char *xname = (NAME); \
682 if (! strcmp (xname, MACHOPIC_FUNCTION_BASE_NAME)) \
683 machopic_output_function_base_name(FILE); \
684 else if (xname[0] == '&' || xname[0] == '*') \
686 int len = strlen (xname); \
687 if (len > 6 && !strcmp ("$stub", xname + len - 5)) \
688 machopic_validate_stub_or_non_lazy_ptr (xname); \
689 else if (len > 7 && !strcmp ("$stub\"", xname + len - 6)) \
690 machopic_validate_stub_or_non_lazy_ptr (xname); \
691 else if (len > 14 && !strcmp ("$non_lazy_ptr", xname + len - 13)) \
692 machopic_validate_stub_or_non_lazy_ptr (xname); \
693 else if (len > 15 && !strcmp ("$non_lazy_ptr\"", xname + len - 14)) \
694 machopic_validate_stub_or_non_lazy_ptr (xname); \
695 if (xname[1] != '"' && name_needs_quotes (&xname[1])) \
696 fprintf (FILE, "\"%s\"", &xname[1]); \
698 fputs (&xname[1], FILE); \
700 else if (xname[0] == '+' || xname[0] == '-') \
701 fprintf (FILE, "\"%s\"", xname); \
702 else if (darwin_label_is_anonymous_local_objc_name (xname)) \
703 fprintf (FILE, "L%s", xname); \
704 else if (!strncmp (xname, ".objc_class_name_", 17)) \
705 fprintf (FILE, "%s", xname); \
706 else if (xname[0] != '"' && name_needs_quotes (xname)) \
707 fprintf (FILE, "\"%s\"", xname); \
709 asm_fprintf (FILE, "%U%s", xname); \
712 /* Output before executable code. */
713 #undef TEXT_SECTION_ASM_OP
714 #define TEXT_SECTION_ASM_OP "\t.text"
716 /* Output before writable data. */
718 #undef DATA_SECTION_ASM_OP
719 #define DATA_SECTION_ASM_OP "\t.data"
722 #define ALIGN_ASM_OP ".align"
724 #undef ASM_OUTPUT_ALIGN
725 #define ASM_OUTPUT_ALIGN(FILE,LOG) \
727 fprintf (FILE, "\t%s %d\n", ALIGN_ASM_OP, (LOG))
729 /* Ensure correct alignment of bss data. */
731 #undef ASM_OUTPUT_ALIGNED_DECL_LOCAL
732 #define ASM_OUTPUT_ALIGNED_DECL_LOCAL(FILE, DECL, NAME, SIZE, ALIGN) \
734 unsigned HOST_WIDE_INT _new_size = SIZE; \
735 fputs ("\t.lcomm ", (FILE)); \
736 assemble_name ((FILE), (NAME)); \
737 if (_new_size == 0) _new_size = 1; \
738 fprintf ((FILE), ","HOST_WIDE_INT_PRINT_UNSIGNED",%u\n", _new_size, \
739 floor_log2 ((ALIGN) / BITS_PER_UNIT)); \
740 if ((DECL) && ((TREE_STATIC (DECL) \
741 && (!DECL_COMMON (DECL) || !TREE_PUBLIC (DECL))) \
742 || DECL_INITIAL (DECL))) \
744 (* targetm.encode_section_info) (DECL, DECL_RTL (DECL), false); \
745 machopic_define_symbol (DECL_RTL (DECL)); \
749 /* The maximum alignment which the object file format can support in
750 bits. For Mach-O, this is 2^15 bytes. */
752 #undef MAX_OFILE_ALIGNMENT
753 #define MAX_OFILE_ALIGNMENT (0x8000 * 8)
755 /* Declare the section variables. */
756 #ifndef USED_FOR_TARGET
757 enum darwin_section_enum {
758 #define DEF_SECTION(NAME, FLAGS, DIRECTIVE, OBJC) NAME,
759 #include "darwin-sections.def"
763 extern GTY(()) section * darwin_sections[NUM_DARWIN_SECTIONS];
766 #undef TARGET_ASM_SELECT_SECTION
767 #define TARGET_ASM_SELECT_SECTION machopic_select_section
768 #define USE_SELECT_SECTION_FOR_FUNCTIONS
770 #undef TARGET_ASM_SELECT_RTX_SECTION
771 #define TARGET_ASM_SELECT_RTX_SECTION machopic_select_rtx_section
772 #undef TARGET_ASM_UNIQUE_SECTION
773 #define TARGET_ASM_UNIQUE_SECTION darwin_unique_section
774 #undef TARGET_ASM_FUNCTION_RODATA_SECTION
775 #define TARGET_ASM_FUNCTION_RODATA_SECTION default_no_function_rodata_section
776 #undef TARGET_ASM_RELOC_RW_MASK
777 #define TARGET_ASM_RELOC_RW_MASK machopic_reloc_rw_mask
780 #define ASM_DECLARE_UNRESOLVED_REFERENCE(FILE,NAME) \
783 if (MACHOPIC_INDIRECT) \
784 fprintf (FILE, "\t.lazy_reference "); \
786 fprintf (FILE, "\t.reference "); \
787 assemble_name (FILE, NAME); \
788 fprintf (FILE, "\n"); \
792 #define ASM_DECLARE_CLASS_REFERENCE(FILE,NAME) \
795 fprintf (FILE, "\t"); \
796 assemble_name (FILE, NAME); \
797 fprintf (FILE, "=0\n"); \
798 (*targetm.asm_out.globalize_label) (FILE, NAME); \
802 /* Globalizing directive for a label. */
803 #define GLOBAL_ASM_OP "\t.globl "
804 #define TARGET_ASM_GLOBALIZE_LABEL darwin_globalize_label
806 /* Emit an assembler directive to set visibility for a symbol. Used
807 to support visibility attribute and Darwin's private extern
809 #undef TARGET_ASM_ASSEMBLE_VISIBILITY
810 #define TARGET_ASM_ASSEMBLE_VISIBILITY darwin_assemble_visibility
812 /* Extra attributes for Darwin. */
813 #define SUBTARGET_ATTRIBUTE_TABLE \
814 /* { name, min_len, max_len, decl_req, type_req, fn_type_req, handler } */ \
815 { "apple_kext_compatibility", 0, 0, false, true, false, \
816 darwin_handle_kext_attribute }, \
817 { "weak_import", 0, 0, true, false, false, \
818 darwin_handle_weak_import_attribute }
820 #undef ASM_GENERATE_INTERNAL_LABEL
821 #define ASM_GENERATE_INTERNAL_LABEL(LABEL,PREFIX,NUM) \
822 sprintf (LABEL, "*%s%ld", PREFIX, (long)(NUM))
824 #undef TARGET_ASM_MARK_DECL_PRESERVED
825 #define TARGET_ASM_MARK_DECL_PRESERVED darwin_mark_decl_preserved
827 /* Set on a symbol with SYMBOL_FLAG_FUNCTION or
828 MACHO_SYMBOL_FLAG_VARIABLE to indicate that the function or
829 variable has been defined in this translation unit.
830 When porting Mach-O to new architectures you need to make
831 sure these aren't clobbered by the backend. */
833 #define MACHO_SYMBOL_FLAG_VARIABLE (SYMBOL_FLAG_MACH_DEP)
834 #define MACHO_SYMBOL_FLAG_DEFINED ((SYMBOL_FLAG_MACH_DEP) << 1)
836 /* Set on a symbol to indicate when fix-and-continue style code
837 generation is being used and the symbol refers to a static symbol
838 that should be rebound from new instances of a translation unit to
839 the original instance of the data. */
841 #define MACHO_SYMBOL_STATIC ((SYMBOL_FLAG_MACH_DEP) << 2)
843 /* Symbolic names for various things we might know about a symbol. */
845 enum machopic_addr_class {
847 MACHOPIC_DEFINED_DATA,
848 MACHOPIC_UNDEFINED_DATA,
849 MACHOPIC_DEFINED_FUNCTION,
850 MACHOPIC_UNDEFINED_FUNCTION
853 /* Macros defining the various PIC cases. */
855 #define MACHO_DYNAMIC_NO_PIC_P (TARGET_DYNAMIC_NO_PIC)
856 #define MACHOPIC_INDIRECT (flag_pic || MACHO_DYNAMIC_NO_PIC_P)
857 #define MACHOPIC_JUST_INDIRECT (MACHO_DYNAMIC_NO_PIC_P)
858 #define MACHOPIC_PURE (flag_pic && ! MACHO_DYNAMIC_NO_PIC_P)
860 #undef TARGET_ENCODE_SECTION_INFO
861 #define TARGET_ENCODE_SECTION_INFO darwin_encode_section_info
862 #undef TARGET_STRIP_NAME_ENCODING
863 #define TARGET_STRIP_NAME_ENCODING default_strip_name_encoding
865 #define GEN_BINDER_NAME_FOR_STUB(BUF,STUB,STUB_LENGTH) \
867 const char *const stub_ = (STUB); \
868 char *buffer_ = (BUF); \
869 strcpy (buffer_, stub_); \
870 if (stub_[0] == '"') \
872 strcpy (buffer_ + (STUB_LENGTH) - 1, "_binder\""); \
876 strcpy (buffer_ + (STUB_LENGTH), "_binder"); \
880 #define GEN_SYMBOL_NAME_FOR_SYMBOL(BUF,SYMBOL,SYMBOL_LENGTH) \
882 const char *const symbol_ = (SYMBOL); \
883 char *buffer_ = (BUF); \
884 if (name_needs_quotes (symbol_) && symbol_[0] != '"') \
886 sprintf (buffer_, "\"%s\"", symbol_); \
890 strcpy (buffer_, symbol_); \
894 /* Given a symbol name string, create the lazy pointer version
895 of the symbol name. */
897 #define GEN_LAZY_PTR_NAME_FOR_SYMBOL(BUF,SYMBOL,SYMBOL_LENGTH) \
899 const char *symbol_ = (SYMBOL); \
900 char *buffer_ = (BUF); \
901 if (symbol_[0] == '"') \
903 strcpy (buffer_, "\"L"); \
904 strcpy (buffer_ + 2, symbol_ + 1); \
905 strcpy (buffer_ + (SYMBOL_LENGTH), "$lazy_ptr\""); \
907 else if (name_needs_quotes (symbol_)) \
909 strcpy (buffer_, "\"L"); \
910 strcpy (buffer_ + 2, symbol_); \
911 strcpy (buffer_ + (SYMBOL_LENGTH) + 2, "$lazy_ptr\""); \
915 strcpy (buffer_, "L"); \
916 strcpy (buffer_ + 1, symbol_); \
917 strcpy (buffer_ + (SYMBOL_LENGTH) + 1, "$lazy_ptr"); \
921 #define EH_FRAME_SECTION_NAME "__TEXT"
922 #define EH_FRAME_SECTION_ATTR ",coalesced,no_toc+strip_static_syms+live_support"
924 /* Java runtime class list. */
925 #define JCR_SECTION_NAME "__DATA,jcr,regular,no_dead_strip"
927 #undef ASM_PREFERRED_EH_DATA_FORMAT
928 #define ASM_PREFERRED_EH_DATA_FORMAT(CODE,GLOBAL) \
929 (((CODE) == 2 && (GLOBAL) == 1) \
930 ? (DW_EH_PE_pcrel | DW_EH_PE_indirect | DW_EH_PE_sdata4) : \
931 ((CODE) == 1 || (GLOBAL) == 0) ? DW_EH_PE_pcrel : DW_EH_PE_absptr)
933 #define ASM_OUTPUT_DWARF_DELTA(FILE,SIZE,LABEL1,LABEL2) \
934 darwin_asm_output_dwarf_delta (FILE, SIZE, LABEL1, LABEL2)
936 #define ASM_OUTPUT_DWARF_OFFSET(FILE,SIZE,LABEL,BASE) \
937 darwin_asm_output_dwarf_offset (FILE, SIZE, LABEL, BASE)
939 #define ASM_MAYBE_OUTPUT_ENCODED_ADDR_RTX(ASM_OUT_FILE, ENCODING, SIZE, ADDR, DONE) \
940 if (ENCODING == ASM_PREFERRED_EH_DATA_FORMAT (2, 1)) { \
941 darwin_non_lazy_pcrel (ASM_OUT_FILE, ADDR); \
945 /* Experimentally, putting jump tables in text is faster on SPEC.
946 Also this is needed for correctness for coalesced functions. */
948 #ifndef JUMP_TABLES_IN_TEXT_SECTION
949 #define JUMP_TABLES_IN_TEXT_SECTION 1
952 #define TARGET_TERMINATE_DW2_EH_FRAME_INFO false
954 #define TARGET_ASM_INIT_SECTIONS darwin_init_sections
955 #undef TARGET_ASM_NAMED_SECTION
956 #define TARGET_ASM_NAMED_SECTION darwin_asm_named_section
958 /* Handle pragma weak and pragma pack. */
959 #define HANDLE_SYSV_PRAGMA 1
961 #define HANDLE_PRAGMA_PACK_PUSH_POP 1
963 #define DARWIN_REGISTER_TARGET_PRAGMAS() \
965 if (!flag_preprocess_only) \
966 cpp_register_pragma (parse_in, NULL, "mark", \
967 darwin_pragma_ignore, false); \
968 c_register_pragma (0, "options", darwin_pragma_options); \
969 c_register_pragma (0, "segment", darwin_pragma_ignore); \
970 c_register_pragma (0, "unused", darwin_pragma_unused); \
971 c_register_pragma (0, "ms_struct", darwin_pragma_ms_struct); \
975 #define ASM_APP_ON ""
977 #define ASM_APP_OFF ""
979 void darwin_register_frameworks (const char *, const char *, int);
980 void darwin_register_objc_includes (const char *, const char *, int);
981 #define TARGET_EXTRA_PRE_INCLUDES darwin_register_objc_includes
982 #define TARGET_EXTRA_INCLUDES darwin_register_frameworks
984 void add_framework_path (char *);
985 #define TARGET_OPTF add_framework_path
987 #define TARGET_POSIX_IO
989 /* All new versions of Darwin have C99 functions. */
991 #define TARGET_C99_FUNCTIONS 1
993 #define WINT_TYPE "int"
995 /* Every program on darwin links against libSystem which contains the pthread
996 routines, so there's no need to explicitly call out when doing threaded
999 #undef GOMP_SELF_SPECS
1000 #define GOMP_SELF_SPECS ""
1002 /* Darwin can't support anchors until we can cope with the adjustments
1003 to size that ASM_DECLARE_OBJECT_NAME and ASM_DECLARE_CONSTANT_NAME
1004 when outputting members of an anchor block and the linker can be
1005 taught to keep them together or we find some other suitable
1006 code-gen technique. */
1009 #define TARGET_ASM_OUTPUT_ANCHOR darwin_asm_output_anchor
1011 #define TARGET_ASM_OUTPUT_ANCHOR NULL
1014 /* Attempt to turn on execute permission for the stack. This may be
1015 used by TARGET_TRAMPOLINE_INIT if the target needs it (that is,
1016 if the target machine can change execute permissions on a page).
1018 There is no way to query the execute permission of the stack, so
1019 we always issue the mprotect() call.
1021 Unfortunately it is not possible to make this namespace-clean.
1023 Also note that no errors should be emitted by this code; it is
1024 considered dangerous for library calls to send messages to
1027 #define ENABLE_EXECUTE_STACK \
1028 extern void __enable_execute_stack (void *); \
1030 __enable_execute_stack (void *addr) \
1032 extern int mprotect (void *, size_t, int); \
1033 extern int getpagesize (void); \
1041 size = getpagesize(); \
1042 mask = ~((long) size - 1); \
1045 page = (char *) (((long) addr) & mask); \
1046 end = (char *) ((((long) (addr + (TARGET_64BIT ? 48 : 40))) & mask) + size); \
1048 /* 7 == PROT_READ | PROT_WRITE | PROT_EXEC */ \
1049 (void) mprotect (page, end - page, 7); \
1052 /* For Apple KEXTs, we make the constructors return this to match gcc
1054 #define TARGET_CXX_CDTOR_RETURNS_THIS (darwin_kextabi_p)
1055 extern int flag_mkernel;
1056 extern int flag_apple_kext;
1057 #define TARGET_KEXTABI flag_apple_kext
1059 #define TARGET_HAS_TARGETCM 1
1061 #ifndef CROSS_DIRECTORY_STRUCTURE
1062 extern void darwin_default_min_version (int * argc, char *** argv);
1063 #define GCC_DRIVER_HOST_INITIALIZATION \
1064 darwin_default_min_version (&argc, &argv)
1065 #endif /* CROSS_DIRECTORY_STRUCTURE */
1067 /* The Apple assembler and linker do not support constructor priorities. */
1068 #undef SUPPORTS_INIT_PRIORITY
1069 #define SUPPORTS_INIT_PRIORITY 0
1071 #endif /* CONFIG_DARWIN_H */