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2007-03-01 Paul Brook <paul@codesourcery.com>
[official-gcc.git] / gcc / config / darwin.h
bloba1cc46cf43bef014927f67817f212c5b5ab7d3e8
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
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 2, 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 You should have received a copy of the GNU General Public License
20 along with GCC; see the file COPYING. If not, write to
21 the Free Software Foundation, 51 Franklin Street, Fifth Floor,
22 Boston, MA 02110-1301, USA. */
23
24 #ifndef CONFIG_DARWIN_H
25 #define CONFIG_DARWIN_H
26
27 /* The definitions in this file are common to all processor types
28 running Darwin, which is the kernel for Mac OS X. Darwin is
29 basically a BSD user layer laid over a Mach kernel, then evolved
30 for many years (at NeXT) in parallel with other Unix systems. So
31 while the runtime is a somewhat idiosyncratic Mach-based thing,
32 other definitions look like they would for a BSD variant. */
33
34 /* Although NeXT ran on many different architectures, as of Jan 2001
35 the only supported Darwin targets are PowerPC and x86. */
36
37 /* One of Darwin's NeXT legacies is the Mach-O format, which is partly
38 like a.out and partly like COFF, with additional features like
39 multi-architecture binary support. */
40
41 #define OBJECT_FORMAT_MACHO
42
43 /* Don't assume anything about the header files. */
44 #define NO_IMPLICIT_EXTERN_C
45
46 /* Suppress g++ attempt to link in the math library automatically. */
47 #define MATH_LIBRARY ""
48
49 /* We have atexit. */
50
51 #define HAVE_ATEXIT
52
53 /* Define an empty body for the function do_global_dtors() in libgcc2.c. */
54
55 #define DO_GLOBAL_DTORS_BODY
56
57 /* The string value for __SIZE_TYPE__. */
58
59 #ifndef SIZE_TYPE
60 #define SIZE_TYPE "long unsigned int"
61 #endif
62
63 /* Type used for ptrdiff_t, as a string used in a declaration. */
64
65 #undef PTRDIFF_TYPE
66 #define PTRDIFF_TYPE "int"
67
68 /* wchar_t is int. */
69
70 #undef WCHAR_TYPE
71 #define WCHAR_TYPE "int"
72 #undef WCHAR_TYPE_SIZE
73 #define WCHAR_TYPE_SIZE 32
74
75 /* Default to using the NeXT-style runtime, since that's what is
76 pre-installed on Darwin systems. */
77
78 #define NEXT_OBJC_RUNTIME
79
80 /* Don't default to pcc-struct-return, because gcc is the only compiler, and
81 we want to retain compatibility with older gcc versions. */
82
83 #undef DEFAULT_PCC_STRUCT_RETURN
84 #define DEFAULT_PCC_STRUCT_RETURN 0
85
86 /* True if pragma ms_struct is in effect. */
87 extern GTY(()) int darwin_ms_struct;
88
89 /* This table intercepts weirdo options whose names would interfere
90 with normal driver conventions, and either translates them into
91 standardly-named options, or adds a 'Z' so that they can get to
92 specs processing without interference.
93
94 Do not expand a linker option to "-Xlinker -<option>", since that
95 forfeits the ability to control via spec strings later. However,
96 as a special exception, do this translation with -filelist, because
97 otherwise the driver will think there are no input files and quit.
98 (The alternative would be to hack the driver to recognize -filelist
99 specially, but it's simpler to use the translation table.)
100
101 Note that an option name with a prefix that matches another option
102 name, that also takes an argument, needs to be modified so the
103 prefix is different, otherwise a '*' after the shorter option will
104 match with the longer one.
105
106 The SUBTARGET_OPTION_TRANSLATE_TABLE macro, which _must_ be defined
107 in gcc/config/{i386,rs6000}/darwin.h, should contain any additional
108 command-line option translations specific to the particular target
109 architecture. */
110
111 #define TARGET_OPTION_TRANSLATE_TABLE \
112 { "-all_load", "-Zall_load" }, \
113 { "-allowable_client", "-Zallowable_client" }, \
114 { "-arch_errors_fatal", "-Zarch_errors_fatal" }, \
115 { "-bind_at_load", "-Zbind_at_load" }, \
116 { "-bundle", "-Zbundle" }, \
117 { "-bundle_loader", "-Zbundle_loader" }, \
118 { "-weak_reference_mismatches", "-Zweak_reference_mismatches" }, \
119 { "-dead_strip", "-Zdead_strip" }, \
120 { "-no_dead_strip_inits_and_terms", "-Zno_dead_strip_inits_and_terms" }, \
121 { "-dependency-file", "-MF" }, \
122 { "-dylib_file", "-Zdylib_file" }, \
123 { "-dynamic", "-Zdynamic" }, \
124 { "-dynamiclib", "-Zdynamiclib" }, \
125 { "-exported_symbols_list", "-Zexported_symbols_list" }, \
126 { "-gfull", "-g -fno-eliminate-unused-debug-symbols" }, \
127 { "-gused", "-g -feliminate-unused-debug-symbols" }, \
128 { "-segaddr", "-Zsegaddr" }, \
129 { "-segs_read_only_addr", "-Zsegs_read_only_addr" }, \
130 { "-segs_read_write_addr", "-Zsegs_read_write_addr" }, \
131 { "-seg_addr_table", "-Zseg_addr_table" }, \
132 { "-seg_addr_table_filename", "-Zfn_seg_addr_table_filename" }, \
133 { "-umbrella", "-Zumbrella" }, \
134 { "-fapple-kext", "-fapple-kext -static -Wa,-static" }, \
135 { "-filelist", "-Xlinker -filelist -Xlinker" }, \
136 { "-findirect-virtual-calls", "-fapple-kext" }, \
137 { "-flat_namespace", "-Zflat_namespace" }, \
138 { "-force_cpusubtype_ALL", "-Zforce_cpusubtype_ALL" }, \
139 { "-force_flat_namespace", "-Zforce_flat_namespace" }, \
140 { "-framework", "-Xlinker -framework -Xlinker" }, \
141 { "-fterminated-vtables", "-fapple-kext" }, \
142 { "-image_base", "-Zimage_base" }, \
143 { "-init", "-Zinit" }, \
144 { "-install_name", "-Zinstall_name" }, \
145 { "-mkernel", "-mkernel -static -Wa,-static" }, \
146 { "-multiply_defined_unused", "-Zmultiplydefinedunused" }, \
147 { "-multiply_defined", "-Zmultiply_defined" }, \
148 { "-multi_module", "-Zmulti_module" }, \
149 { "-static", "-static -Wa,-static" }, \
150 { "-single_module", "-Zsingle_module" }, \
151 { "-unexported_symbols_list", "-Zunexported_symbols_list" }, \
152 SUBTARGET_OPTION_TRANSLATE_TABLE
153
154 #define SUBSUBTARGET_OVERRIDE_OPTIONS \
155 do { \
156 darwin_override_options (); \
157 } while (0)
158
159 /* These compiler options take n arguments. */
160
161 #undef WORD_SWITCH_TAKES_ARG
162 #define WORD_SWITCH_TAKES_ARG(STR) \
163 (DEFAULT_WORD_SWITCH_TAKES_ARG (STR) ? 1 : \
164 !strcmp (STR, "Zallowable_client") ? 1 : \
165 !strcmp (STR, "arch") ? 1 : \
166 !strcmp (STR, "arch_only") ? 1 : \
167 !strcmp (STR, "Zbundle_loader") ? 1 : \
168 !strcmp (STR, "client_name") ? 1 : \
169 !strcmp (STR, "compatibility_version") ? 1 : \
170 !strcmp (STR, "current_version") ? 1 : \
171 !strcmp (STR, "Zdylib_file") ? 1 : \
172 !strcmp (STR, "Zexported_symbols_list") ? 1 : \
173 !strcmp (STR, "Zimage_base") ? 1 : \
174 !strcmp (STR, "Zinit") ? 1 : \
175 !strcmp (STR, "Zinstall_name") ? 1 : \
176 !strcmp (STR, "Zmultiplydefinedunused") ? 1 : \
177 !strcmp (STR, "Zmultiply_defined") ? 1 : \
178 !strcmp (STR, "precomp-trustfile") ? 1 : \
179 !strcmp (STR, "read_only_relocs") ? 1 : \
180 !strcmp (STR, "sectcreate") ? 3 : \
181 !strcmp (STR, "sectorder") ? 3 : \
182 !strcmp (STR, "Zsegaddr") ? 2 : \
183 !strcmp (STR, "Zsegs_read_only_addr") ? 1 : \
184 !strcmp (STR, "Zsegs_read_write_addr") ? 1 : \
185 !strcmp (STR, "Zseg_addr_table") ? 1 : \
186 !strcmp (STR, "Zfn_seg_addr_table_filename") ? 1 :\
187 !strcmp (STR, "seg1addr") ? 1 : \
188 !strcmp (STR, "segprot") ? 3 : \
189 !strcmp (STR, "sub_library") ? 1 : \
190 !strcmp (STR, "sub_umbrella") ? 1 : \
191 !strcmp (STR, "Zumbrella") ? 1 : \
192 !strcmp (STR, "undefined") ? 1 : \
193 !strcmp (STR, "Zunexported_symbols_list") ? 1 : \
194 !strcmp (STR, "Zweak_reference_mismatches") ? 1 : \
195 !strcmp (STR, "pagezero_size") ? 1 : \
196 !strcmp (STR, "segs_read_only_addr") ? 1 : \
197 !strcmp (STR, "segs_read_write_addr") ? 1 : \
198 !strcmp (STR, "sectalign") ? 3 : \
199 !strcmp (STR, "sectobjectsymbols") ? 2 : \
200 !strcmp (STR, "segcreate") ? 3 : \
201 !strcmp (STR, "dylinker_install_name") ? 1 : \
202 0)
203
204 #define SUBTARGET_C_COMMON_OVERRIDE_OPTIONS do { \
205 if (flag_mkernel || flag_apple_kext) \
206 { \
207 if (flag_use_cxa_atexit == 2) \
208 flag_use_cxa_atexit = 0; \
209 /* kexts should always be built without the coalesced sections \
210 because the kernel loader doesn't grok such sections. */ \
211 flag_weak = 0; \
212 /* No RTTI in kexts. */ \
213 flag_rtti = 0; \
214 } \
215 } while (0)
216
217 /* Machine dependent cpp options. Don't add more options here, add
218 them to darwin_cpp_builtins in darwin-c.c. */
219
220 #undef CPP_SPEC
221 #define CPP_SPEC "%{static:%{!dynamic:-D__STATIC__}}%{!static:-D__DYNAMIC__}" \
222 " %{pthread:-D_REENTRANT}"
223
224 /* This is mostly a clone of the standard LINK_COMMAND_SPEC, plus
225 precomp, libtool, and fat build additions. Also we
226 don't specify a second %G after %L because libSystem is
227 self-contained and doesn't need to link against libgcc.a. */
228 /* In general, random Darwin linker flags should go into LINK_SPEC
229 instead of LINK_COMMAND_SPEC. The command spec is better for
230 specifying the handling of options understood by generic Unix
231 linkers, and for positional arguments like libraries. */
232 #define LINK_COMMAND_SPEC "\
233 %{!fdump=*:%{!fsyntax-only:%{!c:%{!M:%{!MM:%{!E:%{!S:\
234 %(linker) %l %X %{d} %{s} %{t} %{Z} %{u*} \
235 %{A} %{e*} %{m} %{r} %{x} \
236 %{o*}%{!o:-o a.out} \
237 %{!A:%{!nostdlib:%{!nostartfiles:%S}}} \
238 %{L*} %{fopenmp:%:include(libgomp.spec)%(link_gomp)} \
239 %(link_libgcc) %o %{fprofile-arcs|fprofile-generate|coverage:-lgcov} \
240 %{!nostdlib:%{!nodefaultlibs:%(link_ssp) %G %L}} \
241 %{!A:%{!nostdlib:%{!nostartfiles:%E}}} %{T*} %{F*} }}}}}}}\n\
242 %{!fdump=*:%{!fsyntax-only:%{!c:%{!M:%{!MM:%{!E:%{!S:\
243 %{.c|.cc|.C|.cpp|.c++|.CPP|.m|.mm: \
244 %{gdwarf-2:%{!gstabs*:%{!g0: dsymutil %{o*:%*}%{!o:a.out}}}}}}}}}}}}"
245
246 #ifdef TARGET_SYSTEM_ROOT
247 #define LINK_SYSROOT_SPEC \
248 "%{isysroot*:-syslibroot %*;:-syslibroot " TARGET_SYSTEM_ROOT "}"
249 #else
250 #define LINK_SYSROOT_SPEC "%{isysroot*:-syslibroot %*}"
251 #endif
252
253 /* Please keep the random linker options in alphabetical order (modulo
254 'Z' and 'no' prefixes). Note that options taking arguments may appear
255 multiple times on a command line with different arguments each time,
256 so put a * after their names so all of them get passed. */
257 #define LINK_SPEC \
258 "%{static}%{!static:-dynamic} \
259 %{fgnu-runtime:%:replace-outfile(-lobjc -lobjc-gnu)}\
260 %{!Zdynamiclib: \
261 %{Zforce_cpusubtype_ALL:-arch %(darwin_arch) -force_cpusubtype_ALL} \
262 %{!Zforce_cpusubtype_ALL:-arch %(darwin_subarch)} \
263 %{Zbundle:-bundle} \
264 %{Zbundle_loader*:-bundle_loader %*} \
265 %{client_name*} \
266 %{compatibility_version*:%e-compatibility_version only allowed with -dynamiclib\
267 } \
268 %{current_version*:%e-current_version only allowed with -dynamiclib} \
269 %{Zforce_flat_namespace:-force_flat_namespace} \
270 %{Zinstall_name*:%e-install_name only allowed with -dynamiclib} \
271 %{keep_private_externs} \
272 %{private_bundle} \
273 } \
274 %{Zdynamiclib: -dylib \
275 %{Zbundle:%e-bundle not allowed with -dynamiclib} \
276 %{Zbundle_loader*:%e-bundle_loader not allowed with -dynamiclib} \
277 %{client_name*:%e-client_name not allowed with -dynamiclib} \
278 %{compatibility_version*:-dylib_compatibility_version %*} \
279 %{current_version*:-dylib_current_version %*} \
280 %{Zforce_cpusubtype_ALL:-arch %(darwin_arch)} \
281 %{!Zforce_cpusubtype_ALL: -arch %(darwin_subarch)} \
282 %{Zforce_flat_namespace:%e-force_flat_namespace not allowed with -dynamiclib} \
283 %{Zinstall_name*:-dylib_install_name %*} \
284 %{keep_private_externs:%e-keep_private_externs not allowed with -dynamiclib} \
285 %{private_bundle:%e-private_bundle not allowed with -dynamiclib} \
286 } \
287 %{Zall_load:-all_load} \
288 %{Zallowable_client*:-allowable_client %*} \
289 %{Zbind_at_load:-bind_at_load} \
290 %{Zarch_errors_fatal:-arch_errors_fatal} \
291 %{Zdead_strip:-dead_strip} \
292 %{Zno_dead_strip_inits_and_terms:-no_dead_strip_inits_and_terms} \
293 %{Zdylib_file*:-dylib_file %*} \
294 %{Zdynamic:-dynamic}\
295 %{Zexported_symbols_list*:-exported_symbols_list %*} \
296 %{Zflat_namespace:-flat_namespace} \
297 %{headerpad_max_install_names*} \
298 %{Zimage_base*:-image_base %*} \
299 %{Zinit*:-init %*} \
300 %{!mmacosx-version-min=*:-macosx_version_min %(darwin_minversion)} \
301 %{mmacosx-version-min=*:-macosx_version_min %*} \
302 %{nomultidefs} \
303 %{Zmulti_module:-multi_module} %{Zsingle_module:-single_module} \
304 %{Zmultiply_defined*:-multiply_defined %*} \
305 %{!Zmultiply_defined*:%{shared-libgcc: \
306 %:version-compare(< 10.5 mmacosx-version-min= -multiply_defined) \
307 %:version-compare(< 10.5 mmacosx-version-min= suppress)}} \
308 %{Zmultiplydefinedunused*:-multiply_defined_unused %*} \
309 %{prebind} %{noprebind} %{nofixprebinding} %{prebind_all_twolevel_modules} \
310 %{read_only_relocs} \
311 %{sectcreate*} %{sectorder*} %{seg1addr*} %{segprot*} \
312 %{Zsegaddr*:-segaddr %*} \
313 %{Zsegs_read_only_addr*:-segs_read_only_addr %*} \
314 %{Zsegs_read_write_addr*:-segs_read_write_addr %*} \
315 %{Zseg_addr_table*: -seg_addr_table %*} \
316 %{Zfn_seg_addr_table_filename*:-seg_addr_table_filename %*} \
317 %{sub_library*} %{sub_umbrella*} \
318 " LINK_SYSROOT_SPEC " \
319 %{twolevel_namespace} %{twolevel_namespace_hints} \
320 %{Zumbrella*: -umbrella %*} \
321 %{undefined*} \
322 %{Zunexported_symbols_list*:-unexported_symbols_list %*} \
323 %{Zweak_reference_mismatches*:-weak_reference_mismatches %*} \
324 %{!Zweak_reference_mismatches*:-weak_reference_mismatches non-weak} \
325 %{X} \
326 %{y*} \
327 %{w} \
328 %{pagezero_size*} %{segs_read_*} %{seglinkedit} %{noseglinkedit} \
329 %{sectalign*} %{sectobjectsymbols*} %{segcreate*} %{whyload} \
330 %{whatsloaded} %{dylinker_install_name*} \
331 %{dylinker} %{Mach} "
332
333
334 /* Machine dependent libraries. */
335
336 #define LIB_SPEC "%{!static:-lSystem}"
337
338 /* Support -mmacosx-version-min by supplying different (stub) libgcc_s.dylib
339 libraries to link against, and by not linking against libgcc_s on
340 earlier-than-10.3.9.
341
342 Note that by default, -lgcc_eh is not linked against! This is
343 because in a future version of Darwin the EH frame information may
344 be in a new format, or the fallback routine might be changed; if
345 you want to explicitly link against the static version of those
346 routines, because you know you don't need to unwind through system
347 libraries, you need to explicitly say -static-libgcc.
348
349 If it is linked against, it has to be before -lgcc, because it may
350 need symbols from -lgcc. */
351 #undef REAL_LIBGCC_SPEC
352 #define REAL_LIBGCC_SPEC \
353 "%{static-libgcc|static: -lgcc_eh -lgcc; \
354 shared-libgcc|fexceptions: \
355 %:version-compare(!> 10.5 mmacosx-version-min= -lgcc_s.10.4) \
356 %:version-compare(>= 10.5 mmacosx-version-min= -lgcc_s.10.5) \
357 -lgcc; \
358 :%:version-compare(>< 10.3.9 10.5 mmacosx-version-min= -lgcc_s.10.4) \
359 %:version-compare(>= 10.5 mmacosx-version-min= -lgcc_s.10.5) \
360 -lgcc}"
361
362 /* We specify crt0.o as -lcrt0.o so that ld will search the library path.
363
364 crt3.o provides __cxa_atexit on systems that don't have it. Since
365 it's only used with C++, which requires passing -shared-libgcc, key
366 off that to avoid unnecessarily adding a destructor to every
367 powerpc program built. */
368
369 #undef STARTFILE_SPEC
370 #define STARTFILE_SPEC \
371 "%{Zdynamiclib: %(darwin_dylib1) } \
372 %{!Zdynamiclib:%{Zbundle:%{!static:-lbundle1.o}} \
373 %{!Zbundle:%{pg:%{static:-lgcrt0.o} \
374 %{!static:%{object:-lgcrt0.o} \
375 %{!object:%{preload:-lgcrt0.o} \
376 %{!preload:-lgcrt1.o %(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)}"
383
384 /* The native Darwin linker doesn't necessarily place files in the order
385 that they're specified on the link line. Thus, it is pointless
386 to put anything in ENDFILE_SPEC. */
387 /* #define ENDFILE_SPEC "" */
388
389 #define DARWIN_EXTRA_SPECS \
390 { "darwin_crt1", DARWIN_CRT1_SPEC }, \
391 { "darwin_dylib1", DARWIN_DYLIB1_SPEC }, \
392 { "darwin_minversion", DARWIN_MINVERSION_SPEC },
393
394 #define DARWIN_DYLIB1_SPEC \
395 "%:version-compare(!> 10.5 mmacosx-version-min= -ldylib1.o) \
396 %:version-compare(>= 10.5 mmacosx-version-min= -ldylib1.10.5.o)"
397
398 #define DARWIN_CRT1_SPEC \
399 "%:version-compare(!> 10.5 mmacosx-version-min= -lcrt1.o) \
400 %:version-compare(>= 10.5 mmacosx-version-min= -lcrt1.10.5.o)"
401
402 /* Default Darwin ASM_SPEC, very simple. */
403 #define ASM_SPEC "-arch %(darwin_arch) \
404 %{Zforce_cpusubtype_ALL:-force_cpusubtype_ALL}"
405
406 /* We still allow output of STABS. */
407
408 #define DBX_DEBUGGING_INFO 1
409
410 #define DWARF2_DEBUGGING_INFO
411 #define PREFERRED_DEBUGGING_TYPE DBX_DEBUG
412
413 #define DEBUG_FRAME_SECTION "__DWARF,__debug_frame,regular,debug"
414 #define DEBUG_INFO_SECTION "__DWARF,__debug_info,regular,debug"
415 #define DEBUG_ABBREV_SECTION "__DWARF,__debug_abbrev,regular,debug"
416 #define DEBUG_ARANGES_SECTION "__DWARF,__debug_aranges,regular,debug"
417 #define DEBUG_MACINFO_SECTION "__DWARF,__debug_macinfo,regular,debug"
418 #define DEBUG_LINE_SECTION "__DWARF,__debug_line,regular,debug"
419 #define DEBUG_LOC_SECTION "__DWARF,__debug_loc,regular,debug"
420 #define DEBUG_PUBNAMES_SECTION "__DWARF,__debug_pubnames,regular,debug"
421 #define DEBUG_PUBTYPES_SECTION "__DWARF,__debug_pubtypes,regular,debug"
422 #define DEBUG_STR_SECTION "__DWARF,__debug_str,regular,debug"
423 #define DEBUG_RANGES_SECTION "__DWARF,__debug_ranges,regular,debug"
424
425 /* When generating stabs debugging, use N_BINCL entries. */
426
427 #define DBX_USE_BINCL
428
429 /* There is no limit to the length of stabs strings. */
430
431 #define DBX_CONTIN_LENGTH 0
432
433 /* gdb needs a null N_SO at the end of each file for scattered loading. */
434
435 #define DBX_OUTPUT_NULL_N_SO_AT_MAIN_SOURCE_FILE_END
436
437 /* GCC's definition of 'one_only' is the same as its definition of 'weak'. */
438 #define MAKE_DECL_ONE_ONLY(DECL) (DECL_WEAK (DECL) = 1)
439
440 /* Mach-O supports 'weak imports', and 'weak definitions' in coalesced
441 sections. machopic_select_section ensures that weak variables go in
442 coalesced sections. Weak aliases (or any other kind of aliases) are
443 not supported. Weak symbols that aren't visible outside the .s file
444 are not supported. */
445 #define ASM_WEAKEN_DECL(FILE, DECL, NAME, ALIAS) \
446 do { \
447 if (ALIAS) \
448 { \
449 warning (0, "alias definitions not supported in Mach-O; ignored"); \
450 break; \
451 } \
452 \
453 if (! DECL_EXTERNAL (DECL) && TREE_PUBLIC (DECL)) \
454 targetm.asm_out.globalize_label (FILE, NAME); \
455 if (DECL_EXTERNAL (DECL)) \
456 fputs ("\t.weak_reference ", FILE); \
457 else if (! lookup_attribute ("weak", DECL_ATTRIBUTES (DECL)) \
458 && lookup_attribute ("weak_import", DECL_ATTRIBUTES (DECL))) \
459 break; \
460 else if (TREE_PUBLIC (DECL)) \
461 fputs ("\t.weak_definition ", FILE); \
462 else \
463 break; \
464 assemble_name (FILE, NAME); \
465 fputc ('\n', FILE); \
466 } while (0)
467
468 /* Darwin has the pthread routines in libSystem, which every program
469 links to, so there's no need for weak-ness for that. */
470 #define GTHREAD_USE_WEAK 0
471
472 /* The Darwin linker imposes two limitations on common symbols: they
473 can't have hidden visibility, and they can't appear in dylibs. As
474 a consequence, we should never use common symbols to represent
475 vague linkage. */
476 #undef USE_COMMON_FOR_ONE_ONLY
477 #define USE_COMMON_FOR_ONE_ONLY 0
478
479 /* The Darwin linker doesn't want coalesced symbols to appear in
480 a static archive's table of contents. */
481 #undef TARGET_WEAK_NOT_IN_ARCHIVE_TOC
482 #define TARGET_WEAK_NOT_IN_ARCHIVE_TOC 1
483
484 /* On Darwin, we don't (at the time of writing) have linkonce sections
485 with names, so it's safe to make the class data not comdat. */
486 #define TARGET_CXX_CLASS_DATA_ALWAYS_COMDAT hook_bool_void_false
487
488 /* For efficiency, on Darwin the RTTI information that is always
489 emitted in the standard C++ library should not be COMDAT. */
490 #define TARGET_CXX_LIBRARY_RTTI_COMDAT hook_bool_void_false
491
492 /* We make exception information linkonce. */
493 #undef TARGET_USES_WEAK_UNWIND_INFO
494 #define TARGET_USES_WEAK_UNWIND_INFO 1
495
496 /* We need to use a nonlocal label for the start of an EH frame: the
497 Darwin linker requires that a coalesced section start with a label.
498 Unfortunately, it also requires that 'debug' sections don't contain
499 labels. */
500 #undef FRAME_BEGIN_LABEL
501 #define FRAME_BEGIN_LABEL (for_eh ? "EH_frame" : "Lframe")
502
503 /* Emit a label for the FDE corresponding to DECL. EMPTY means
504 emit a label for an empty FDE. */
505 #define TARGET_ASM_EMIT_UNWIND_LABEL darwin_emit_unwind_label
506
507 /* Emit a label to separate the exception table. */
508 #define TARGET_ASM_EMIT_EXCEPT_TABLE_LABEL darwin_emit_except_table_label
509
510 /* Our profiling scheme doesn't LP labels and counter words. */
511
512 #define NO_PROFILE_COUNTERS 1
513
514 #undef INIT_SECTION_ASM_OP
515 #define INIT_SECTION_ASM_OP
516
517 #undef INVOKE__main
518
519 #define TARGET_ASM_CONSTRUCTOR machopic_asm_out_constructor
520 #define TARGET_ASM_DESTRUCTOR machopic_asm_out_destructor
521
522 /* Always prefix with an underscore. */
523
524 #define USER_LABEL_PREFIX "_"
525
526 /* Don't output a .file directive. That is only used by the assembler for
527 error reporting. */
528 #undef TARGET_ASM_FILE_START_FILE_DIRECTIVE
529 #define TARGET_ASM_FILE_START_FILE_DIRECTIVE false
530
531 #undef TARGET_ASM_FILE_END
532 #define TARGET_ASM_FILE_END darwin_file_end
533
534 #define ASM_OUTPUT_SKIP(FILE,SIZE) \
535 fprintf (FILE, "\t.space "HOST_WIDE_INT_PRINT_UNSIGNED"\n", SIZE)
536
537 /* Give ObjC methods pretty symbol names. */
538
539 #undef OBJC_GEN_METHOD_LABEL
540 #define OBJC_GEN_METHOD_LABEL(BUF,IS_INST,CLASS_NAME,CAT_NAME,SEL_NAME,NUM) \
541 do { if (CAT_NAME) \
542 sprintf (BUF, "%c[%s(%s) %s]", (IS_INST) ? '-' : '+', \
543 (CLASS_NAME), (CAT_NAME), (SEL_NAME)); \
544 else \
545 sprintf (BUF, "%c[%s %s]", (IS_INST) ? '-' : '+', \
546 (CLASS_NAME), (SEL_NAME)); \
547 } while (0)
548
549 /* The RTTI data (e.g., __ti4name) is common and public (and static),
550 but it does need to be referenced via indirect PIC data pointers.
551 The machopic_define_symbol calls are telling the machopic subsystem
552 that the name *is* defined in this module, so it doesn't need to
553 make them indirect. */
554
555 #undef ASM_DECLARE_OBJECT_NAME
556 #define ASM_DECLARE_OBJECT_NAME(FILE, NAME, DECL) \
557 do { \
558 const char *xname = NAME; \
559 if (GET_CODE (XEXP (DECL_RTL (DECL), 0)) != SYMBOL_REF) \
560 xname = IDENTIFIER_POINTER (DECL_NAME (DECL)); \
561 if (! DECL_WEAK (DECL) \
562 && ((TREE_STATIC (DECL) \
563 && (!DECL_COMMON (DECL) || !TREE_PUBLIC (DECL))) \
564 || DECL_INITIAL (DECL))) \
565 machopic_define_symbol (DECL_RTL (DECL)); \
566 if ((TREE_STATIC (DECL) \
567 && (!DECL_COMMON (DECL) || !TREE_PUBLIC (DECL))) \
568 || DECL_INITIAL (DECL)) \
569 (* targetm.encode_section_info) (DECL, DECL_RTL (DECL), false); \
570 ASM_OUTPUT_LABEL (FILE, xname); \
571 /* Darwin doesn't support zero-size objects, so give them a \
572 byte. */ \
573 if (tree_low_cst (DECL_SIZE_UNIT (DECL), 1) == 0) \
574 assemble_zeros (1); \
575 } while (0)
576
577 #define ASM_DECLARE_FUNCTION_NAME(FILE, NAME, DECL) \
578 do { \
579 const char *xname = NAME; \
580 if (GET_CODE (XEXP (DECL_RTL (DECL), 0)) != SYMBOL_REF) \
581 xname = IDENTIFIER_POINTER (DECL_NAME (DECL)); \
582 if (! DECL_WEAK (DECL) \
583 && ((TREE_STATIC (DECL) \
584 && (!DECL_COMMON (DECL) || !TREE_PUBLIC (DECL))) \
585 || DECL_INITIAL (DECL))) \
586 machopic_define_symbol (DECL_RTL (DECL)); \
587 if ((TREE_STATIC (DECL) \
588 && (!DECL_COMMON (DECL) || !TREE_PUBLIC (DECL))) \
589 || DECL_INITIAL (DECL)) \
590 (* targetm.encode_section_info) (DECL, DECL_RTL (DECL), false); \
591 ASM_OUTPUT_LABEL (FILE, xname); \
592 } while (0)
593
594 #define ASM_DECLARE_CONSTANT_NAME(FILE, NAME, EXP, SIZE) \
595 do { \
596 ASM_OUTPUT_LABEL (FILE, NAME); \
597 /* Darwin doesn't support zero-size objects, so give them a \
598 byte. */ \
599 if ((SIZE) == 0) \
600 assemble_zeros (1); \
601 } while (0)
602
603 /* Wrap new method names in quotes so the assembler doesn't gag.
604 Make Objective-C internal symbols local. */
605
606 #undef ASM_OUTPUT_LABELREF
607 #define ASM_OUTPUT_LABELREF(FILE,NAME) \
608 do { \
609 const char *xname = (NAME); \
610 if (! strcmp (xname, "<pic base>")) \
611 machopic_output_function_base_name(FILE); \
612 else if (xname[0] == '&' || xname[0] == '*') \
613 { \
614 int len = strlen (xname); \
615 if (len > 6 && !strcmp ("$stub", xname + len - 5)) \
616 machopic_validate_stub_or_non_lazy_ptr (xname); \
617 else if (len > 7 && !strcmp ("$stub\"", xname + len - 6)) \
618 machopic_validate_stub_or_non_lazy_ptr (xname); \
619 else if (len > 14 && !strcmp ("$non_lazy_ptr", xname + len - 13)) \
620 machopic_validate_stub_or_non_lazy_ptr (xname); \
621 else if (len > 15 && !strcmp ("$non_lazy_ptr\"", xname + len - 14)) \
622 machopic_validate_stub_or_non_lazy_ptr (xname); \
623 if (xname[1] != '"' && name_needs_quotes (&xname[1])) \
624 fprintf (FILE, "\"%s\"", &xname[1]); \
625 else \
626 fputs (&xname[1], FILE); \
627 } \
628 else if (xname[0] == '+' || xname[0] == '-') \
629 fprintf (FILE, "\"%s\"", xname); \
630 else if (!strncmp (xname, "_OBJC_", 6)) \
631 fprintf (FILE, "L%s", xname); \
632 else if (!strncmp (xname, ".objc_class_name_", 17)) \
633 fprintf (FILE, "%s", xname); \
634 else if (xname[0] != '"' && name_needs_quotes (xname)) \
635 fprintf (FILE, "\"%s\"", xname); \
636 else \
637 asm_fprintf (FILE, "%U%s", xname); \
638 } while (0)
639
640 /* Output before executable code. */
641 #undef TEXT_SECTION_ASM_OP
642 #define TEXT_SECTION_ASM_OP "\t.text"
643
644 /* Output before writable data. */
645
646 #undef DATA_SECTION_ASM_OP
647 #define DATA_SECTION_ASM_OP "\t.data"
648
649 #undef ALIGN_ASM_OP
650 #define ALIGN_ASM_OP ".align"
651
652 #undef ASM_OUTPUT_ALIGN
653 #define ASM_OUTPUT_ALIGN(FILE,LOG) \
654 if ((LOG) != 0) \
655 fprintf (FILE, "\t%s %d\n", ALIGN_ASM_OP, (LOG))
656
657 /* Ensure correct alignment of bss data. */
658
659 #undef ASM_OUTPUT_ALIGNED_DECL_LOCAL
660 #define ASM_OUTPUT_ALIGNED_DECL_LOCAL(FILE, DECL, NAME, SIZE, ALIGN) \
661 do { \
662 unsigned HOST_WIDE_INT _new_size = SIZE; \
663 fputs (".lcomm ", (FILE)); \
664 assemble_name ((FILE), (NAME)); \
665 if (_new_size == 0) _new_size = 1; \
666 fprintf ((FILE), ","HOST_WIDE_INT_PRINT_UNSIGNED",%u\n", _new_size, \
667 floor_log2 ((ALIGN) / BITS_PER_UNIT)); \
668 if ((DECL) && ((TREE_STATIC (DECL) \
669 && (!DECL_COMMON (DECL) || !TREE_PUBLIC (DECL))) \
670 || DECL_INITIAL (DECL))) \
671 { \
672 (* targetm.encode_section_info) (DECL, DECL_RTL (DECL), false); \
673 machopic_define_symbol (DECL_RTL (DECL)); \
674 } \
675 } while (0)
676
677 /* The maximum alignment which the object file format can support.
678 For Mach-O, this is 2^15. */
679
680 #undef MAX_OFILE_ALIGNMENT
681 #define MAX_OFILE_ALIGNMENT 0x8000
682
683 /* Declare the section variables. */
684 #ifndef USED_FOR_TARGET
685 enum darwin_section_enum {
686 #define DEF_SECTION(NAME, FLAGS, DIRECTIVE, OBJC) NAME,
687 #include "darwin-sections.def"
688 #undef DEF_SECTION
689 NUM_DARWIN_SECTIONS
690 };
691 extern GTY(()) section * darwin_sections[NUM_DARWIN_SECTIONS];
692 #endif
693
694 #undef TARGET_ASM_SELECT_SECTION
695 #define TARGET_ASM_SELECT_SECTION machopic_select_section
696 #define USE_SELECT_SECTION_FOR_FUNCTIONS
697
698 #undef TARGET_ASM_SELECT_RTX_SECTION
699 #define TARGET_ASM_SELECT_RTX_SECTION machopic_select_rtx_section
700 #undef TARGET_ASM_UNIQUE_SECTION
701 #define TARGET_ASM_UNIQUE_SECTION darwin_unique_section
702 #undef TARGET_ASM_FUNCTION_RODATA_SECTION
703 #define TARGET_ASM_FUNCTION_RODATA_SECTION default_no_function_rodata_section
704
705
706 #define ASM_DECLARE_UNRESOLVED_REFERENCE(FILE,NAME) \
707 do { \
708 if (FILE) { \
709 if (MACHOPIC_INDIRECT) \
710 fprintf (FILE, "\t.lazy_reference "); \
711 else \
712 fprintf (FILE, "\t.reference "); \
713 assemble_name (FILE, NAME); \
714 fprintf (FILE, "\n"); \
715 } \
716 } while (0)
717
718 #define ASM_DECLARE_CLASS_REFERENCE(FILE,NAME) \
719 do { \
720 if (FILE) { \
721 fprintf (FILE, "\t"); \
722 assemble_name (FILE, NAME); \
723 fprintf (FILE, "=0\n"); \
724 (*targetm.asm_out.globalize_label) (FILE, NAME); \
725 } \
726 } while (0)
727
728 /* Globalizing directive for a label. */
729 #define GLOBAL_ASM_OP ".globl "
730 #define TARGET_ASM_GLOBALIZE_LABEL darwin_globalize_label
731
732 /* Emit an assembler directive to set visibility for a symbol. Used
733 to support visibility attribute and Darwin's private extern
734 feature. */
735 #undef TARGET_ASM_ASSEMBLE_VISIBILITY
736 #define TARGET_ASM_ASSEMBLE_VISIBILITY darwin_assemble_visibility
737
738 /* Extra attributes for Darwin. */
739 #define SUBTARGET_ATTRIBUTE_TABLE \
740 /* { name, min_len, max_len, decl_req, type_req, fn_type_req, handler } */ \
741 { "apple_kext_compatibility", 0, 0, false, true, false, \
742 darwin_handle_kext_attribute }, \
743 { "weak_import", 0, 0, true, false, false, \
744 darwin_handle_weak_import_attribute }
745
746 #undef ASM_GENERATE_INTERNAL_LABEL
747 #define ASM_GENERATE_INTERNAL_LABEL(LABEL,PREFIX,NUM) \
748 sprintf (LABEL, "*%s%ld", PREFIX, (long)(NUM))
749
750 #undef TARGET_ASM_MARK_DECL_PRESERVED
751 #define TARGET_ASM_MARK_DECL_PRESERVED darwin_mark_decl_preserved
752
753 /* Set on a symbol with SYMBOL_FLAG_FUNCTION or
754 MACHO_SYMBOL_FLAG_VARIABLE to indicate that the function or
755 variable has been defined in this translation unit.
756 When porting Mach-O to new architectures you need to make
757 sure these aren't clobbered by the backend. */
758
759 #define MACHO_SYMBOL_FLAG_VARIABLE (SYMBOL_FLAG_MACH_DEP)
760 #define MACHO_SYMBOL_FLAG_DEFINED ((SYMBOL_FLAG_MACH_DEP) << 1)
761
762 /* Set on a symbol to indicate when fix-and-continue style code
763 generation is being used and the symbol refers to a static symbol
764 that should be rebound from new instances of a translation unit to
765 the original instance of the data. */
766
767 #define MACHO_SYMBOL_STATIC ((SYMBOL_FLAG_MACH_DEP) << 2)
768
769 /* Symbolic names for various things we might know about a symbol. */
770
771 enum machopic_addr_class {
772 MACHOPIC_UNDEFINED,
773 MACHOPIC_DEFINED_DATA,
774 MACHOPIC_UNDEFINED_DATA,
775 MACHOPIC_DEFINED_FUNCTION,
776 MACHOPIC_UNDEFINED_FUNCTION
777 };
778
779 /* Macros defining the various PIC cases. */
780
781 #define MACHO_DYNAMIC_NO_PIC_P (TARGET_DYNAMIC_NO_PIC)
782 #define MACHOPIC_INDIRECT (flag_pic || MACHO_DYNAMIC_NO_PIC_P)
783 #define MACHOPIC_JUST_INDIRECT (MACHO_DYNAMIC_NO_PIC_P)
784 #define MACHOPIC_PURE (flag_pic && ! MACHO_DYNAMIC_NO_PIC_P)
785
786 #undef TARGET_ENCODE_SECTION_INFO
787 #define TARGET_ENCODE_SECTION_INFO darwin_encode_section_info
788 #undef TARGET_STRIP_NAME_ENCODING
789 #define TARGET_STRIP_NAME_ENCODING default_strip_name_encoding
790
791 #define GEN_BINDER_NAME_FOR_STUB(BUF,STUB,STUB_LENGTH) \
792 do { \
793 const char *const stub_ = (STUB); \
794 char *buffer_ = (BUF); \
795 strcpy (buffer_, stub_); \
796 if (stub_[0] == '"') \
797 { \
798 strcpy (buffer_ + (STUB_LENGTH) - 1, "_binder\""); \
799 } \
800 else \
801 { \
802 strcpy (buffer_ + (STUB_LENGTH), "_binder"); \
803 } \
804 } while (0)
805
806 #define GEN_SYMBOL_NAME_FOR_SYMBOL(BUF,SYMBOL,SYMBOL_LENGTH) \
807 do { \
808 const char *const symbol_ = (SYMBOL); \
809 char *buffer_ = (BUF); \
810 if (name_needs_quotes (symbol_) && symbol_[0] != '"') \
811 { \
812 sprintf (buffer_, "\"%s\"", symbol_); \
813 } \
814 else \
815 { \
816 strcpy (buffer_, symbol_); \
817 } \
818 } while (0)
819
820 /* Given a symbol name string, create the lazy pointer version
821 of the symbol name. */
822
823 #define GEN_LAZY_PTR_NAME_FOR_SYMBOL(BUF,SYMBOL,SYMBOL_LENGTH) \
824 do { \
825 const char *symbol_ = (SYMBOL); \
826 char *buffer_ = (BUF); \
827 if (symbol_[0] == '"') \
828 { \
829 strcpy (buffer_, "\"L"); \
830 strcpy (buffer_ + 2, symbol_ + 1); \
831 strcpy (buffer_ + (SYMBOL_LENGTH), "$lazy_ptr\""); \
832 } \
833 else if (name_needs_quotes (symbol_)) \
834 { \
835 strcpy (buffer_, "\"L"); \
836 strcpy (buffer_ + 2, symbol_); \
837 strcpy (buffer_ + (SYMBOL_LENGTH) + 2, "$lazy_ptr\""); \
838 } \
839 else \
840 { \
841 strcpy (buffer_, "L"); \
842 strcpy (buffer_ + 1, symbol_); \
843 strcpy (buffer_ + (SYMBOL_LENGTH) + 1, "$lazy_ptr"); \
844 } \
845 } while (0)
846
847 #define EH_FRAME_SECTION_NAME "__TEXT"
848 #define EH_FRAME_SECTION_ATTR ",coalesced,no_toc+strip_static_syms+live_support"
849
850 /* Java runtime class list. */
851 #define JCR_SECTION_NAME "__DATA,jcr,regular,no_dead_strip"
852
853 #undef ASM_PREFERRED_EH_DATA_FORMAT
854 #define ASM_PREFERRED_EH_DATA_FORMAT(CODE,GLOBAL) \
855 (((CODE) == 2 && (GLOBAL) == 1) \
856 ? (DW_EH_PE_pcrel | DW_EH_PE_indirect | DW_EH_PE_sdata4) : \
857 ((CODE) == 1 || (GLOBAL) == 0) ? DW_EH_PE_pcrel : DW_EH_PE_absptr)
858
859 #define ASM_OUTPUT_DWARF_DELTA(FILE,SIZE,LABEL1,LABEL2) \
860 darwin_asm_output_dwarf_delta (FILE, SIZE, LABEL1, LABEL2)
861
862 #define ASM_OUTPUT_DWARF_OFFSET(FILE,SIZE,LABEL,BASE) \
863 darwin_asm_output_dwarf_offset (FILE, SIZE, LABEL, BASE)
864
865 #define ASM_MAYBE_OUTPUT_ENCODED_ADDR_RTX(ASM_OUT_FILE, ENCODING, SIZE, ADDR, DONE) \
866 if (ENCODING == ASM_PREFERRED_EH_DATA_FORMAT (2, 1)) { \
867 darwin_non_lazy_pcrel (ASM_OUT_FILE, ADDR); \
868 goto DONE; \
869 }
870
871 /* Experimentally, putting jump tables in text is faster on SPEC.
872 Also this is needed for correctness for coalesced functions. */
873
874 #ifndef JUMP_TABLES_IN_TEXT_SECTION
875 #define JUMP_TABLES_IN_TEXT_SECTION 1
876 #endif
877
878 #define TARGET_TERMINATE_DW2_EH_FRAME_INFO false
879
880 #define TARGET_ASM_INIT_SECTIONS darwin_init_sections
881 #undef TARGET_ASM_NAMED_SECTION
882 #define TARGET_ASM_NAMED_SECTION darwin_asm_named_section
883
884 /* Handle pragma weak and pragma pack. */
885 #define HANDLE_SYSV_PRAGMA 1
886
887 #define HANDLE_PRAGMA_PACK_PUSH_POP 1
888
889 #define DARWIN_REGISTER_TARGET_PRAGMAS() \
890 do { \
891 c_register_pragma (0, "mark", darwin_pragma_ignore); \
892 c_register_pragma (0, "options", darwin_pragma_options); \
893 c_register_pragma (0, "segment", darwin_pragma_ignore); \
894 c_register_pragma (0, "unused", darwin_pragma_unused); \
895 c_register_pragma (0, "ms_struct", darwin_pragma_ms_struct); \
896 } while (0)
897
898 #undef ASM_APP_ON
899 #define ASM_APP_ON ""
900 #undef ASM_APP_OFF
901 #define ASM_APP_OFF ""
902
903 void darwin_register_frameworks (const char *, const char *, int);
904 void darwin_register_objc_includes (const char *, const char *, int);
905 #define TARGET_EXTRA_PRE_INCLUDES darwin_register_objc_includes
906 #define TARGET_EXTRA_INCLUDES darwin_register_frameworks
907
908 void add_framework_path (char *);
909 #define TARGET_OPTF add_framework_path
910
911 #define TARGET_POSIX_IO
912
913 /* All new versions of Darwin have C99 functions. */
914
915 #define TARGET_C99_FUNCTIONS 1
916
917 #define WINT_TYPE "int"
918
919 /* Every program on darwin links against libSystem which contains the pthread
920 routines, so there's no need to explicitly call out when doing threaded
921 work. */
922
923 #undef GOMP_SELF_SPECS
924 #define GOMP_SELF_SPECS ""
925
926 /* Darwin can't support anchors until we can cope with the adjustments
927 to size that ASM_DECLARE_OBJECT_NAME and ASM_DECLARE_CONSTANT_NAME
928 when outputting members of an anchor block and the linker can be
929 taught to keep them together or we find some other suitable
930 code-gen technique. */
931
932 #if 0
933 #define TARGET_ASM_OUTPUT_ANCHOR darwin_asm_output_anchor
934 #else
935 #define TARGET_ASM_OUTPUT_ANCHOR NULL
936 #endif
937
938 /* Attempt to turn on execute permission for the stack. This may be
939 used by INITIALIZE_TRAMPOLINE of the target needs it (that is,
940 if the target machine can change execute permissions on a page).
941
942 There is no way to query the execute permission of the stack, so
943 we always issue the mprotect() call.
944
945 Unfortunately it is not possible to make this namespace-clean.
946
947 Also note that no errors should be emitted by this code; it is
948 considered dangerous for library calls to send messages to
949 stdout/stderr. */
950
951 #define ENABLE_EXECUTE_STACK \
952 extern void __enable_execute_stack (void *); \
953 void \
954 __enable_execute_stack (void *addr) \
955 { \
956 extern int mprotect (void *, size_t, int); \
957 extern int getpagesize (void); \
958 static int size; \
959 static long mask; \
960 \
961 char *page, *end; \
962 \
963 if (size == 0) \
964 { \
965 size = getpagesize(); \
966 mask = ~((long) size - 1); \
967 } \
968 \
969 page = (char *) (((long) addr) & mask); \
970 end = (char *) ((((long) (addr + (TARGET_64BIT ? 48 : 40))) & mask) + size); \
971 \
972 /* 7 == PROT_READ | PROT_WRITE | PROT_EXEC */ \
973 (void) mprotect (page, end - page, 7); \
974 }
975
976 /* For Apple KEXTs, we make the constructors return this to match gcc
977 2.95. */
978 #define TARGET_CXX_CDTOR_RETURNS_THIS (darwin_kextabi_p)
979 extern int flag_mkernel;
980 extern int flag_apple_kext;
981 #define TARGET_KEXTABI flag_apple_kext
982
983 #endif /* CONFIG_DARWIN_H */
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