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* config/darwin.h: Don't include darwin-sections.def to declare
[official-gcc.git] / gcc / config / darwin.h
blob757bedc57e156bb6ba3f370f0b225925852ddb28
1 /* Target definitions for Darwin (Mac OS X) systems.
2 Copyright (C) 1989, 1990, 1991, 1992, 1993, 2000, 2001, 2002, 2003, 2004,
3 2005
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 /* Suppress g++ attempt to link in the math library automatically. */
44 #define MATH_LIBRARY ""
45
46 /* We have atexit. */
47
48 #define HAVE_ATEXIT
49
50 /* Define an empty body for the function do_global_dtors() in libgcc2.c. */
51
52 #define DO_GLOBAL_DTORS_BODY
53
54 /* The string value for __SIZE_TYPE__. */
55
56 #ifndef SIZE_TYPE
57 #define SIZE_TYPE "long unsigned int"
58 #endif
59
60 /* Type used for ptrdiff_t, as a string used in a declaration. */
61
62 #undef PTRDIFF_TYPE
63 #define PTRDIFF_TYPE "int"
64
65 /* wchar_t is int. */
66
67 #undef WCHAR_TYPE
68 #define WCHAR_TYPE "int"
69 #undef WCHAR_TYPE_SIZE
70 #define WCHAR_TYPE_SIZE 32
71
72 /* Default to using the NeXT-style runtime, since that's what is
73 pre-installed on Darwin systems. */
74
75 #define NEXT_OBJC_RUNTIME
76
77 /* Don't default to pcc-struct-return, because gcc is the only compiler, and
78 we want to retain compatibility with older gcc versions. */
79
80 #undef DEFAULT_PCC_STRUCT_RETURN
81 #define DEFAULT_PCC_STRUCT_RETURN 0
82
83 /* This table intercepts weirdo options whose names would interfere
84 with normal driver conventions, and either translates them into
85 standardly-named options, or adds a 'Z' so that they can get to
86 specs processing without interference.
87
88 Do not expand a linker option to "-Xlinker -<option>", since that
89 forfeits the ability to control via spec strings later. However,
90 as a special exception, do this translation with -filelist, because
91 otherwise the driver will think there are no input files and quit.
92 (The alternative would be to hack the driver to recognize -filelist
93 specially, but it's simpler to use the translation table.)
94
95 Note that an option name with a prefix that matches another option
96 name, that also takes an argument, needs to be modified so the
97 prefix is different, otherwise a '*' after the shorter option will
98 match with the longer one.
99
100 The SUBTARGET_OPTION_TRANSLATE_TABLE macro, which _must_ be defined
101 in gcc/config/{i386,rs6000}/darwin.h, should contain any additional
102 command-line option translations specific to the particular target
103 architecture. */
104
105 #define TARGET_OPTION_TRANSLATE_TABLE \
106 { "-all_load", "-Zall_load" }, \
107 { "-allowable_client", "-Zallowable_client" }, \
108 { "-arch_errors_fatal", "-Zarch_errors_fatal" }, \
109 { "-bind_at_load", "-Zbind_at_load" }, \
110 { "-bundle", "-Zbundle" }, \
111 { "-bundle_loader", "-Zbundle_loader" }, \
112 { "-weak_reference_mismatches", "-Zweak_reference_mismatches" }, \
113 { "-dead_strip", "-Zdead_strip" }, \
114 { "-no_dead_strip_inits_and_terms", "-Zno_dead_strip_inits_and_terms" }, \
115 { "-dependency-file", "-MF" }, \
116 { "-dylib_file", "-Zdylib_file" }, \
117 { "-dynamic", "-Zdynamic" }, \
118 { "-dynamiclib", "-Zdynamiclib" }, \
119 { "-exported_symbols_list", "-Zexported_symbols_list" }, \
120 { "-gfull", "-g -fno-eliminate-unused-debug-symbols" }, \
121 { "-gused", "-g -feliminate-unused-debug-symbols" }, \
122 { "-segaddr", "-Zsegaddr" }, \
123 { "-segs_read_only_addr", "-Zsegs_read_only_addr" }, \
124 { "-segs_read_write_addr", "-Zsegs_read_write_addr" }, \
125 { "-seg_addr_table", "-Zseg_addr_table" }, \
126 { "-seg_addr_table_filename", "-Zseg_addr_table_filename" }, \
127 { "-filelist", "-Xlinker -filelist -Xlinker" }, \
128 { "-framework", "-Xlinker -framework -Xlinker" }, \
129 { "-flat_namespace", "-Zflat_namespace" }, \
130 { "-force_cpusubtype_ALL", "-Zforce_cpusubtype_ALL" }, \
131 { "-force_flat_namespace", "-Zforce_flat_namespace" }, \
132 { "-image_base", "-Zimage_base" }, \
133 { "-init", "-Zinit" }, \
134 { "-install_name", "-Zinstall_name" }, \
135 { "-multiply_defined_unused", "-Zmultiplydefinedunused" }, \
136 { "-multiply_defined", "-Zmultiply_defined" }, \
137 { "-multi_module", "-Zmulti_module" }, \
138 { "-static", "-static -Wa,-static" }, \
139 { "-single_module", "-Zsingle_module" }, \
140 { "-unexported_symbols_list", "-Zunexported_symbols_list" }, \
141 SUBTARGET_OPTION_TRANSLATE_TABLE
142
143 /* These compiler options take n arguments. */
144
145 #undef WORD_SWITCH_TAKES_ARG
146 #define WORD_SWITCH_TAKES_ARG(STR) \
147 (DEFAULT_WORD_SWITCH_TAKES_ARG (STR) ? 1 : \
148 !strcmp (STR, "Zallowable_client") ? 1 : \
149 !strcmp (STR, "arch") ? 1 : \
150 !strcmp (STR, "arch_only") ? 1 : \
151 !strcmp (STR, "Zbundle_loader") ? 1 : \
152 !strcmp (STR, "client_name") ? 1 : \
153 !strcmp (STR, "compatibility_version") ? 1 : \
154 !strcmp (STR, "current_version") ? 1 : \
155 !strcmp (STR, "Zdylib_file") ? 1 : \
156 !strcmp (STR, "Zexported_symbols_list") ? 1 : \
157 !strcmp (STR, "Zimage_base") ? 1 : \
158 !strcmp (STR, "Zinit") ? 1 : \
159 !strcmp (STR, "Zinstall_name") ? 1 : \
160 !strcmp (STR, "Zmultiplydefinedunused") ? 1 : \
161 !strcmp (STR, "Zmultiply_defined") ? 1 : \
162 !strcmp (STR, "precomp-trustfile") ? 1 : \
163 !strcmp (STR, "read_only_relocs") ? 1 : \
164 !strcmp (STR, "sectcreate") ? 3 : \
165 !strcmp (STR, "sectorder") ? 3 : \
166 !strcmp (STR, "Zsegaddr") ? 2 : \
167 !strcmp (STR, "Zsegs_read_only_addr") ? 1 : \
168 !strcmp (STR, "Zsegs_read_write_addr") ? 1 : \
169 !strcmp (STR, "Zseg_addr_table") ? 1 : \
170 !strcmp (STR, "Zseg_addr_table_filename") ?1 :\
171 !strcmp (STR, "seg1addr") ? 1 : \
172 !strcmp (STR, "segprot") ? 3 : \
173 !strcmp (STR, "sub_library") ? 1 : \
174 !strcmp (STR, "sub_umbrella") ? 1 : \
175 !strcmp (STR, "umbrella") ? 1 : \
176 !strcmp (STR, "undefined") ? 1 : \
177 !strcmp (STR, "Zunexported_symbols_list") ? 1 : \
178 !strcmp (STR, "Zweak_reference_mismatches") ? 1 : \
179 !strcmp (STR, "pagezero_size") ? 1 : \
180 !strcmp (STR, "segs_read_only_addr") ? 1 : \
181 !strcmp (STR, "segs_read_write_addr") ? 1 : \
182 !strcmp (STR, "sectalign") ? 3 : \
183 !strcmp (STR, "sectobjectsymbols") ? 2 : \
184 !strcmp (STR, "segcreate") ? 3 : \
185 !strcmp (STR, "dylinker_install_name") ? 1 : \
186 0)
187
188 /* Machine dependent cpp options. Don't add more options here, add
189 them to darwin_cpp_builtins in darwin-c.c. */
190
191 #undef CPP_SPEC
192 #define CPP_SPEC "%{static:%{!dynamic:-D__STATIC__}}%{!static:-D__DYNAMIC__}"
193
194 /* This is mostly a clone of the standard LINK_COMMAND_SPEC, plus
195 precomp, libtool, and fat build additions. Also we
196 don't specify a second %G after %L because libSystem is
197 self-contained and doesn't need to link against libgcc.a. */
198 /* In general, random Darwin linker flags should go into LINK_SPEC
199 instead of LINK_COMMAND_SPEC. The command spec is better for
200 specifying the handling of options understood by generic Unix
201 linkers, and for positional arguments like libraries. */
202 #define LINK_COMMAND_SPEC "\
203 %{!fdump=*:%{!fsyntax-only:%{!precomp:%{!c:%{!M:%{!MM:%{!E:%{!S:\
204 %{!Zdynamiclib:%(linker)}%{Zdynamiclib:/usr/bin/libtool} \
205 %l %X %{d} %{s} %{t} %{Z} \
206 %{!Zdynamiclib:%{A} %{e*} %{m} %{N} %{n} %{r} %{u*} %{x} %{z}} \
207 %{@:-o %f%u.out}%{!@:%{o*}%{!o:-o a.out}} \
208 %{!Zdynamiclib:%{!A:%{!nostdlib:%{!nostartfiles:%S}}}} \
209 %{L*} %(link_libgcc) %o %{fprofile-arcs|fprofile-generate|coverage:-lgcov} \
210 %{!nostdlib:%{!nodefaultlibs:%(link_ssp) %G %L}} \
211 %{!A:%{!nostdlib:%{!nostartfiles:%E}}} %{T*} %{F*} }}}}}}}}"
212
213 /* Please keep the random linker options in alphabetical order (modulo
214 'Z' and 'no' prefixes). Options that can only go to one of libtool
215 or ld must be listed twice, under both !Zdynamiclib and
216 Zdynamiclib, with one of the cases reporting an error. */
217 /* Note that options taking arguments may appear multiple times on a
218 command line with different arguments each time, so put a * after
219 their names so all of them get passed. */
220 #define LINK_SPEC \
221 "%{static}%{!static:-dynamic} \
222 %{fgnu-runtime:%:replace-outfile(-lobjc -lobjc-gnu)}\
223 %{!Zdynamiclib: \
224 %{Zforce_cpusubtype_ALL:-arch %(darwin_arch) -force_cpusubtype_ALL} \
225 %{!Zforce_cpusubtype_ALL:-arch %(darwin_subarch)} \
226 %{Zbundle:-bundle} \
227 %{Zbundle_loader*:-bundle_loader %*} \
228 %{client_name*} \
229 %{compatibility_version*:%e-compatibility_version only allowed with -dynamiclib\
230 } \
231 %{current_version*:%e-current_version only allowed with -dynamiclib} \
232 %{Zforce_flat_namespace:-force_flat_namespace} \
233 %{Zinstall_name*:%e-install_name only allowed with -dynamiclib} \
234 %{keep_private_externs} \
235 %{private_bundle} \
236 } \
237 %{Zdynamiclib: \
238 %{Zbundle:%e-bundle not allowed with -dynamiclib} \
239 %{Zbundle_loader*:%e-bundle_loader not allowed with -dynamiclib} \
240 %{client_name*:%e-client_name not allowed with -dynamiclib} \
241 %{compatibility_version*} \
242 %{current_version*} \
243 %{Zforce_cpusubtype_ALL:-arch_only %(darwin_arch)} \
244 %{!Zforce_cpusubtype_ALL: -arch_only %(darwin_subarch)} \
245 %{Zforce_flat_namespace:%e-force_flat_namespace not allowed with -dynamiclib} \
246 %{Zinstall_name*:-install_name %*} \
247 %{keep_private_externs:%e-keep_private_externs not allowed with -dynamiclib} \
248 %{private_bundle:%e-private_bundle not allowed with -dynamiclib} \
249 } \
250 %{Zall_load:-all_load}%{Zdynamiclib:%{!Zall_load:-noall_load}} \
251 %{Zallowable_client*:-allowable_client %*} \
252 %{Zbind_at_load:-bind_at_load} \
253 %{Zarch_errors_fatal:-arch_errors_fatal} \
254 %{Zdead_strip:-dead_strip} \
255 %{Zno_dead_strip_inits_and_terms:-no_dead_strip_inits_and_terms} \
256 %{Zdylib_file*:-dylib_file %*} \
257 %{Zdynamic:-dynamic}\
258 %{Zexported_symbols_list*:-exported_symbols_list %*} \
259 %{Zflat_namespace:-flat_namespace} \
260 %{headerpad_max_install_names*} \
261 %{Zimage_base*:-image_base %*} \
262 %{Zinit*:-init %*} \
263 %{mmacosx-version-min=*:-macosx_version_min %*} \
264 %{nomultidefs} \
265 %{Zmulti_module:-multi_module} %{Zsingle_module:-single_module} \
266 %{Zmultiply_defined*:-multiply_defined %*} \
267 %{Zmultiplydefinedunused*:-multiply_defined_unused %*} \
268 %{prebind} %{noprebind} %{nofixprebinding} %{prebind_all_twolevel_modules} \
269 %{read_only_relocs} \
270 %{sectcreate*} %{sectorder*} %{seg1addr*} %{segprot*} \
271 %{Zsegaddr*:-segaddr %*} \
272 %{Zsegs_read_only_addr*:-segs_read_only_addr %*} \
273 %{Zsegs_read_write_addr*:-segs_read_write_addr %*} \
274 %{Zseg_addr_table*: -seg_addr_table %*} \
275 %{Zseg_addr_table_filename*:-seg_addr_table_filename %*} \
276 %{sub_library*} %{sub_umbrella*} \
277 %{isysroot*:-syslibroot %*} \
278 %{twolevel_namespace} %{twolevel_namespace_hints} \
279 %{umbrella*} \
280 %{undefined*} \
281 %{Zunexported_symbols_list*:-unexported_symbols_list %*} \
282 %{Zweak_reference_mismatches*:-weak_reference_mismatches %*} \
283 %{!Zweak_reference_mismatches*:-weak_reference_mismatches non-weak} \
284 %{X} \
285 %{y*} \
286 %{w} \
287 %{pagezero_size*} %{segs_read_*} %{seglinkedit} %{noseglinkedit} \
288 %{sectalign*} %{sectobjectsymbols*} %{segcreate*} %{whyload} \
289 %{whatsloaded} %{dylinker_install_name*} \
290 %{dylinker} %{Mach} "
291
292
293 /* Machine dependent libraries. */
294
295 #define LIB_SPEC "%{!static:-lSystem}"
296
297 /* Support -mmacosx-version-min by supplying different (stub) libgcc_s.dylib
298 libraries to link against, and by not linking against libgcc_s on
299 earlier-than-10.3.9.
300
301 Note that by default, -lgcc_eh is not linked against! This is
302 because in a future version of Darwin the EH frame information may
303 be in a new format, or the fallback routine might be changed; if
304 you want to explicitly link against the static version of those
305 routines, because you know you don't need to unwind through system
306 libraries, you need to explicitly say -static-libgcc.
307
308 If it is linked against, it has to be before -lgcc, because it may
309 need symbols from -lgcc. */
310 #undef REAL_LIBGCC_SPEC
311 #define REAL_LIBGCC_SPEC \
312 "%{static-libgcc|static: -lgcc_eh -lgcc; \
313 shared-libgcc|fexceptions: \
314 %:version-compare(!> 10.5 mmacosx-version-min= -lgcc_s.10.4) \
315 %:version-compare(>= 10.5 mmacosx-version-min= -lgcc_s.10.5) \
316 -lgcc; \
317 :%:version-compare(>< 10.3.9 10.5 mmacosx-version-min= -lgcc_s.10.4) \
318 %:version-compare(>= 10.5 mmacosx-version-min= -lgcc_s.10.5) \
319 -lgcc}"
320
321 /* We specify crt0.o as -lcrt0.o so that ld will search the library path. */
322
323 #undef STARTFILE_SPEC
324 #define STARTFILE_SPEC \
325 "%{!Zdynamiclib:%{Zbundle:%{!static:-lbundle1.o}} \
326 %{!Zbundle:%{pg:%{static:-lgcrt0.o} \
327 %{!static:%{object:-lgcrt0.o} \
328 %{!object:%{preload:-lgcrt0.o} \
329 %{!preload:-lgcrt1.o %(darwin_crt2)}}}} \
330 %{!pg:%{static:-lcrt0.o} \
331 %{!static:%{object:-lcrt0.o} \
332 %{!object:%{preload:-lcrt0.o} \
333 %{!preload:-lcrt1.o %(darwin_crt2)}}}}}}"
334
335 /* The native Darwin linker doesn't necessarily place files in the order
336 that they're specified on the link line. Thus, it is pointless
337 to put anything in ENDFILE_SPEC. */
338 /* #define ENDFILE_SPEC "" */
339
340 /* Default Darwin ASM_SPEC, very simple. */
341 #define ASM_SPEC "-arch %(darwin_arch) \
342 %{Zforce_cpusubtype_ALL:-force_cpusubtype_ALL}"
343
344 /* We use Dbx symbol format. */
345
346 #define DBX_DEBUGGING_INFO 1
347
348 /* Also enable Dwarf 2 as an option. */
349 #define DWARF2_DEBUGGING_INFO
350 #define PREFERRED_DEBUGGING_TYPE DBX_DEBUG
351
352 #define DEBUG_FRAME_SECTION "__DWARFA,__debug_frame,coalesced,no_toc+strip_static_syms"
353 #define DEBUG_INFO_SECTION "__DWARFA,__debug_info"
354 #define DEBUG_ABBREV_SECTION "__DWARFA,__debug_abbrev"
355 #define DEBUG_ARANGES_SECTION "__DWARFA,__debug_aranges"
356 #define DEBUG_MACINFO_SECTION "__DWARFA,__debug_macinfo"
357 #define DEBUG_LINE_SECTION "__DWARFA,__debug_line"
358 #define DEBUG_LOC_SECTION "__DWARFA,__debug_loc"
359 #define DEBUG_PUBNAMES_SECTION "__DWARFA,__debug_pubnames"
360 #define DEBUG_STR_SECTION "__DWARFA,__debug_str"
361 #define DEBUG_RANGES_SECTION "__DWARFA,__debug_ranges"
362
363 /* When generating stabs debugging, use N_BINCL entries. */
364
365 #define DBX_USE_BINCL
366
367 /* There is no limit to the length of stabs strings. */
368
369 #define DBX_CONTIN_LENGTH 0
370
371 /* gdb needs a null N_SO at the end of each file for scattered loading. */
372
373 #define DBX_OUTPUT_NULL_N_SO_AT_MAIN_SOURCE_FILE_END
374
375 /* GCC's definition of 'one_only' is the same as its definition of 'weak'. */
376 #define MAKE_DECL_ONE_ONLY(DECL) (DECL_WEAK (DECL) = 1)
377
378 /* Mach-O supports 'weak imports', and 'weak definitions' in coalesced
379 sections. machopic_select_section ensures that weak variables go in
380 coalesced sections. Weak aliases (or any other kind of aliases) are
381 not supported. Weak symbols that aren't visible outside the .s file
382 are not supported. */
383 #define ASM_WEAKEN_DECL(FILE, DECL, NAME, ALIAS) \
384 do { \
385 if (ALIAS) \
386 { \
387 warning (0, "alias definitions not supported in Mach-O; ignored"); \
388 break; \
389 } \
390 \
391 if (! DECL_EXTERNAL (DECL) && TREE_PUBLIC (DECL)) \
392 targetm.asm_out.globalize_label (FILE, NAME); \
393 if (DECL_EXTERNAL (DECL)) \
394 fputs ("\t.weak_reference ", FILE); \
395 else if (! lookup_attribute ("weak", DECL_ATTRIBUTES (DECL)) \
396 && lookup_attribute ("weak_import", DECL_ATTRIBUTES (DECL))) \
397 break; \
398 else if (TREE_PUBLIC (DECL)) \
399 fputs ("\t.weak_definition ", FILE); \
400 else \
401 break; \
402 assemble_name (FILE, NAME); \
403 fputc ('\n', FILE); \
404 } while (0)
405
406 /* Darwin has the pthread routines in libSystem, which every program
407 links to, so there's no need for weak-ness for that. */
408 #define GTHREAD_USE_WEAK 0
409
410 /* The Darwin linker imposes two limitations on common symbols: they
411 can't have hidden visibility, and they can't appear in dylibs. As
412 a consequence, we should never use common symbols to represent
413 vague linkage. */
414 #undef USE_COMMON_FOR_ONE_ONLY
415 #define USE_COMMON_FOR_ONE_ONLY 0
416
417 /* The Darwin linker doesn't want coalesced symbols to appear in
418 a static archive's table of contents. */
419 #undef TARGET_WEAK_NOT_IN_ARCHIVE_TOC
420 #define TARGET_WEAK_NOT_IN_ARCHIVE_TOC 1
421
422 /* On Darwin, we don't (at the time of writing) have linkonce sections
423 with names, so it's safe to make the class data not comdat. */
424 #define TARGET_CXX_CLASS_DATA_ALWAYS_COMDAT hook_bool_void_false
425
426 /* We make exception information linkonce. */
427 #undef TARGET_USES_WEAK_UNWIND_INFO
428 #define TARGET_USES_WEAK_UNWIND_INFO 1
429
430 /* We need to use a nonlocal label for the start of an EH frame: the
431 Darwin linker requires that a coalesced section start with a label. */
432 #undef FRAME_BEGIN_LABEL
433 #define FRAME_BEGIN_LABEL "EH_frame"
434
435 /* Emit a label for the FDE corresponding to DECL. EMPTY means
436 emit a label for an empty FDE. */
437 #define TARGET_ASM_EMIT_UNWIND_LABEL darwin_emit_unwind_label
438
439 /* Our profiling scheme doesn't LP labels and counter words. */
440
441 #define NO_PROFILE_COUNTERS 1
442
443 #undef INIT_SECTION_ASM_OP
444 #define INIT_SECTION_ASM_OP
445
446 #undef INVOKE__main
447
448 #define TARGET_ASM_CONSTRUCTOR machopic_asm_out_constructor
449 #define TARGET_ASM_DESTRUCTOR machopic_asm_out_destructor
450
451 /* Always prefix with an underscore. */
452
453 #define USER_LABEL_PREFIX "_"
454
455 /* Don't output a .file directive. That is only used by the assembler for
456 error reporting. */
457 #undef TARGET_ASM_FILE_START_FILE_DIRECTIVE
458 #define TARGET_ASM_FILE_START_FILE_DIRECTIVE false
459
460 #undef TARGET_ASM_FILE_END
461 #define TARGET_ASM_FILE_END darwin_file_end
462
463 #define ASM_OUTPUT_SKIP(FILE,SIZE) \
464 fprintf (FILE, "\t.space "HOST_WIDE_INT_PRINT_UNSIGNED"\n", SIZE)
465
466 /* Give ObjC methods pretty symbol names. */
467
468 #undef OBJC_GEN_METHOD_LABEL
469 #define OBJC_GEN_METHOD_LABEL(BUF,IS_INST,CLASS_NAME,CAT_NAME,SEL_NAME,NUM) \
470 do { if (CAT_NAME) \
471 sprintf (BUF, "%c[%s(%s) %s]", (IS_INST) ? '-' : '+', \
472 (CLASS_NAME), (CAT_NAME), (SEL_NAME)); \
473 else \
474 sprintf (BUF, "%c[%s %s]", (IS_INST) ? '-' : '+', \
475 (CLASS_NAME), (SEL_NAME)); \
476 } while (0)
477
478 /* The RTTI data (e.g., __ti4name) is common and public (and static),
479 but it does need to be referenced via indirect PIC data pointers.
480 The machopic_define_symbol calls are telling the machopic subsystem
481 that the name *is* defined in this module, so it doesn't need to
482 make them indirect. */
483
484 #undef ASM_DECLARE_OBJECT_NAME
485 #define ASM_DECLARE_OBJECT_NAME(FILE, NAME, DECL) \
486 do { \
487 const char *xname = NAME; \
488 if (GET_CODE (XEXP (DECL_RTL (DECL), 0)) != SYMBOL_REF) \
489 xname = IDENTIFIER_POINTER (DECL_NAME (DECL)); \
490 if (! DECL_WEAK (DECL) \
491 && ((TREE_STATIC (DECL) \
492 && (!DECL_COMMON (DECL) || !TREE_PUBLIC (DECL))) \
493 || DECL_INITIAL (DECL))) \
494 machopic_define_symbol (DECL_RTL (DECL)); \
495 if ((TREE_STATIC (DECL) \
496 && (!DECL_COMMON (DECL) || !TREE_PUBLIC (DECL))) \
497 || DECL_INITIAL (DECL)) \
498 (* targetm.encode_section_info) (DECL, DECL_RTL (DECL), false); \
499 ASM_OUTPUT_LABEL (FILE, xname); \
500 /* Darwin doesn't support zero-size objects, so give them a \
501 byte. */ \
502 if (tree_low_cst (DECL_SIZE_UNIT (DECL), 1) == 0) \
503 assemble_zeros (1); \
504 } while (0)
505
506 #define ASM_DECLARE_FUNCTION_NAME(FILE, NAME, DECL) \
507 do { \
508 const char *xname = NAME; \
509 if (GET_CODE (XEXP (DECL_RTL (DECL), 0)) != SYMBOL_REF) \
510 xname = IDENTIFIER_POINTER (DECL_NAME (DECL)); \
511 if (! DECL_WEAK (DECL) \
512 && ((TREE_STATIC (DECL) \
513 && (!DECL_COMMON (DECL) || !TREE_PUBLIC (DECL))) \
514 || DECL_INITIAL (DECL))) \
515 machopic_define_symbol (DECL_RTL (DECL)); \
516 if ((TREE_STATIC (DECL) \
517 && (!DECL_COMMON (DECL) || !TREE_PUBLIC (DECL))) \
518 || DECL_INITIAL (DECL)) \
519 (* targetm.encode_section_info) (DECL, DECL_RTL (DECL), false); \
520 ASM_OUTPUT_LABEL (FILE, xname); \
521 } while (0)
522
523 #define ASM_DECLARE_CONSTANT_NAME(FILE, NAME, EXP, SIZE) \
524 do { \
525 ASM_OUTPUT_LABEL (FILE, NAME); \
526 /* Darwin doesn't support zero-size objects, so give them a \
527 byte. */ \
528 if ((SIZE) == 0) \
529 assemble_zeros (1); \
530 } while (0)
531
532 /* Wrap new method names in quotes so the assembler doesn't gag.
533 Make Objective-C internal symbols local. */
534
535 #undef ASM_OUTPUT_LABELREF
536 #define ASM_OUTPUT_LABELREF(FILE,NAME) \
537 do { \
538 const char *xname = (NAME); \
539 if (! strcmp (xname, "<pic base>")) \
540 machopic_output_function_base_name(FILE); \
541 else if (xname[0] == '&' || xname[0] == '*') \
542 { \
543 int len = strlen (xname); \
544 if (len > 6 && !strcmp ("$stub", xname + len - 5)) \
545 machopic_validate_stub_or_non_lazy_ptr (xname); \
546 else if (len > 7 && !strcmp ("$stub\"", xname + len - 6)) \
547 machopic_validate_stub_or_non_lazy_ptr (xname); \
548 else if (len > 14 && !strcmp ("$non_lazy_ptr", xname + len - 13)) \
549 machopic_validate_stub_or_non_lazy_ptr (xname); \
550 else if (len > 15 && !strcmp ("$non_lazy_ptr\"", xname + len - 14)) \
551 machopic_validate_stub_or_non_lazy_ptr (xname); \
552 if (xname[1] != '"' && name_needs_quotes (&xname[1])) \
553 fprintf (FILE, "\"%s\"", &xname[1]); \
554 else \
555 fputs (&xname[1], FILE); \
556 } \
557 else if (xname[0] == '+' || xname[0] == '-') \
558 fprintf (FILE, "\"%s\"", xname); \
559 else if (!strncmp (xname, "_OBJC_", 6)) \
560 fprintf (FILE, "L%s", xname); \
561 else if (!strncmp (xname, ".objc_class_name_", 17)) \
562 fprintf (FILE, "%s", xname); \
563 else if (xname[0] != '"' && name_needs_quotes (xname)) \
564 fprintf (FILE, "\"%s\"", xname); \
565 else \
566 asm_fprintf (FILE, "%U%s", xname); \
567 } while (0)
568
569 /* Output before executable code. */
570 #undef TEXT_SECTION_ASM_OP
571 #define TEXT_SECTION_ASM_OP "\t.text"
572
573 /* Output before writable data. */
574
575 #undef DATA_SECTION_ASM_OP
576 #define DATA_SECTION_ASM_OP "\t.data"
577
578 #undef ALIGN_ASM_OP
579 #define ALIGN_ASM_OP ".align"
580
581 #undef ASM_OUTPUT_ALIGN
582 #define ASM_OUTPUT_ALIGN(FILE,LOG) \
583 if ((LOG) != 0) \
584 fprintf (FILE, "\t%s %d\n", ALIGN_ASM_OP, (LOG))
585
586 /* Ensure correct alignment of bss data. */
587
588 #undef ASM_OUTPUT_ALIGNED_DECL_LOCAL
589 #define ASM_OUTPUT_ALIGNED_DECL_LOCAL(FILE, DECL, NAME, SIZE, ALIGN) \
590 do { \
591 unsigned HOST_WIDE_INT _new_size = SIZE; \
592 fputs (".lcomm ", (FILE)); \
593 assemble_name ((FILE), (NAME)); \
594 if (_new_size == 0) _new_size = 1; \
595 fprintf ((FILE), ","HOST_WIDE_INT_PRINT_UNSIGNED",%u\n", _new_size, \
596 floor_log2 ((ALIGN) / BITS_PER_UNIT)); \
597 if ((DECL) && ((TREE_STATIC (DECL) \
598 && (!DECL_COMMON (DECL) || !TREE_PUBLIC (DECL))) \
599 || DECL_INITIAL (DECL))) \
600 { \
601 (* targetm.encode_section_info) (DECL, DECL_RTL (DECL), false); \
602 machopic_define_symbol (DECL_RTL (DECL)); \
603 } \
604 } while (0)
605
606 /* The maximum alignment which the object file format can support.
607 For Mach-O, this is 2^15. */
608
609 #undef MAX_OFILE_ALIGNMENT
610 #define MAX_OFILE_ALIGNMENT 0x8000
611
612 /* Declare the section variables. */
613 #ifndef USED_FOR_TARGET
614 enum darwin_section_enum {
615 #define DEF_SECTION(NAME, FLAGS, DIRECTIVE, OBJC) NAME,
616 #include "darwin-sections.def"
617 #undef DEF_SECTION
618 NUM_DARWIN_SECTIONS
619 };
620 extern GTY(()) section * darwin_sections[NUM_DARWIN_SECTIONS];
621 #endif
622
623 #undef TARGET_ASM_SELECT_SECTION
624 #define TARGET_ASM_SELECT_SECTION machopic_select_section
625 #define USE_SELECT_SECTION_FOR_FUNCTIONS
626
627 #undef TARGET_ASM_SELECT_RTX_SECTION
628 #define TARGET_ASM_SELECT_RTX_SECTION machopic_select_rtx_section
629 #undef TARGET_ASM_UNIQUE_SECTION
630 #define TARGET_ASM_UNIQUE_SECTION darwin_unique_section
631 #undef TARGET_ASM_FUNCTION_RODATA_SECTION
632 #define TARGET_ASM_FUNCTION_RODATA_SECTION default_no_function_rodata_section
633
634
635 #define ASM_DECLARE_UNRESOLVED_REFERENCE(FILE,NAME) \
636 do { \
637 if (FILE) { \
638 if (MACHOPIC_INDIRECT) \
639 fprintf (FILE, "\t.lazy_reference "); \
640 else \
641 fprintf (FILE, "\t.reference "); \
642 assemble_name (FILE, NAME); \
643 fprintf (FILE, "\n"); \
644 } \
645 } while (0)
646
647 #define ASM_DECLARE_CLASS_REFERENCE(FILE,NAME) \
648 do { \
649 if (FILE) { \
650 fprintf (FILE, "\t"); \
651 assemble_name (FILE, NAME); \
652 fprintf (FILE, "=0\n"); \
653 (*targetm.asm_out.globalize_label) (FILE, NAME); \
654 } \
655 } while (0)
656
657 /* Globalizing directive for a label. */
658 #define GLOBAL_ASM_OP ".globl "
659 #define TARGET_ASM_GLOBALIZE_LABEL darwin_globalize_label
660
661 /* Emit an assembler directive to set visibility for a symbol. Used
662 to support visibility attribute and Darwin's private extern
663 feature. */
664 #undef TARGET_ASM_ASSEMBLE_VISIBILITY
665 #define TARGET_ASM_ASSEMBLE_VISIBILITY darwin_assemble_visibility
666
667 /* Extra attributes for Darwin. */
668 #define SUBTARGET_ATTRIBUTE_TABLE \
669 /* { name, min_len, max_len, decl_req, type_req, fn_type_req, handler } */ \
670 { "weak_import", 0, 0, true, false, false, \
671 darwin_handle_weak_import_attribute }
672
673 #undef ASM_GENERATE_INTERNAL_LABEL
674 #define ASM_GENERATE_INTERNAL_LABEL(LABEL,PREFIX,NUM) \
675 sprintf (LABEL, "*%s%ld", PREFIX, (long)(NUM))
676
677 #undef TARGET_ASM_MARK_DECL_PRESERVED
678 #define TARGET_ASM_MARK_DECL_PRESERVED darwin_mark_decl_preserved
679
680 /* Set on a symbol with SYMBOL_FLAG_FUNCTION or
681 MACHO_SYMBOL_FLAG_VARIABLE to indicate that the function or
682 variable has been defined in this translation unit. */
683
684 #define MACHO_SYMBOL_FLAG_VARIABLE (SYMBOL_FLAG_MACH_DEP)
685 #define MACHO_SYMBOL_FLAG_DEFINED ((SYMBOL_FLAG_MACH_DEP) << 1)
686
687 /* Set on a symbol to indicate when fix-and-continue style code
688 generation is being used and the symbol refers to a static symbol
689 that should be rebound from new instances of a translation unit to
690 the original instance of the data. */
691
692 #define MACHO_SYMBOL_STATIC ((SYMBOL_FLAG_MACH_DEP) << 2)
693
694 /* Symbolic names for various things we might know about a symbol. */
695
696 enum machopic_addr_class {
697 MACHOPIC_UNDEFINED,
698 MACHOPIC_DEFINED_DATA,
699 MACHOPIC_UNDEFINED_DATA,
700 MACHOPIC_DEFINED_FUNCTION,
701 MACHOPIC_UNDEFINED_FUNCTION
702 };
703
704 /* Macros defining the various PIC cases. */
705
706 #define MACHO_DYNAMIC_NO_PIC_P (TARGET_DYNAMIC_NO_PIC)
707 #define MACHOPIC_INDIRECT (flag_pic || MACHO_DYNAMIC_NO_PIC_P)
708 #define MACHOPIC_JUST_INDIRECT (flag_pic == 1 || MACHO_DYNAMIC_NO_PIC_P)
709 #define MACHOPIC_PURE (flag_pic == 2 && ! MACHO_DYNAMIC_NO_PIC_P)
710
711 #undef TARGET_ENCODE_SECTION_INFO
712 #define TARGET_ENCODE_SECTION_INFO darwin_encode_section_info
713 #undef TARGET_STRIP_NAME_ENCODING
714 #define TARGET_STRIP_NAME_ENCODING default_strip_name_encoding
715
716 #define GEN_BINDER_NAME_FOR_STUB(BUF,STUB,STUB_LENGTH) \
717 do { \
718 const char *const stub_ = (STUB); \
719 char *buffer_ = (BUF); \
720 strcpy (buffer_, stub_); \
721 if (stub_[0] == '"') \
722 { \
723 strcpy (buffer_ + (STUB_LENGTH) - 1, "_binder\""); \
724 } \
725 else \
726 { \
727 strcpy (buffer_ + (STUB_LENGTH), "_binder"); \
728 } \
729 } while (0)
730
731 #define GEN_SYMBOL_NAME_FOR_SYMBOL(BUF,SYMBOL,SYMBOL_LENGTH) \
732 do { \
733 const char *const symbol_ = (SYMBOL); \
734 char *buffer_ = (BUF); \
735 if (name_needs_quotes (symbol_) && symbol_[0] != '"') \
736 { \
737 sprintf (buffer_, "\"%s\"", symbol_); \
738 } \
739 else \
740 { \
741 strcpy (buffer_, symbol_); \
742 } \
743 } while (0)
744
745 /* Given a symbol name string, create the lazy pointer version
746 of the symbol name. */
747
748 #define GEN_LAZY_PTR_NAME_FOR_SYMBOL(BUF,SYMBOL,SYMBOL_LENGTH) \
749 do { \
750 const char *symbol_ = (SYMBOL); \
751 char *buffer_ = (BUF); \
752 if (symbol_[0] == '"') \
753 { \
754 strcpy (buffer_, "\"L"); \
755 strcpy (buffer_ + 2, symbol_ + 1); \
756 strcpy (buffer_ + (SYMBOL_LENGTH), "$lazy_ptr\""); \
757 } \
758 else if (name_needs_quotes (symbol_)) \
759 { \
760 strcpy (buffer_, "\"L"); \
761 strcpy (buffer_ + 2, symbol_); \
762 strcpy (buffer_ + (SYMBOL_LENGTH) + 2, "$lazy_ptr\""); \
763 } \
764 else \
765 { \
766 strcpy (buffer_, "L"); \
767 strcpy (buffer_ + 1, symbol_); \
768 strcpy (buffer_ + (SYMBOL_LENGTH) + 1, "$lazy_ptr"); \
769 } \
770 } while (0)
771
772 #define EH_FRAME_SECTION_NAME "__TEXT"
773 #define EH_FRAME_SECTION_ATTR ",coalesced,no_toc+strip_static_syms+live_support"
774
775 /* Java runtime class list. */
776 #define JCR_SECTION_NAME "__DATA,jcr,regular,no_dead_strip"
777
778 #undef ASM_PREFERRED_EH_DATA_FORMAT
779 #define ASM_PREFERRED_EH_DATA_FORMAT(CODE,GLOBAL) \
780 (((CODE) == 2 && (GLOBAL) == 1) \
781 ? (DW_EH_PE_pcrel | DW_EH_PE_indirect | DW_EH_PE_sdata4) : \
782 ((CODE) == 1 || (GLOBAL) == 0) ? DW_EH_PE_pcrel : DW_EH_PE_absptr)
783
784 #define ASM_OUTPUT_DWARF_DELTA(FILE,SIZE,LABEL1,LABEL2) \
785 darwin_asm_output_dwarf_delta (FILE, SIZE, LABEL1, LABEL2)
786
787 #define ASM_MAYBE_OUTPUT_ENCODED_ADDR_RTX(ASM_OUT_FILE, ENCODING, SIZE, ADDR, DONE) \
788 if (ENCODING == ASM_PREFERRED_EH_DATA_FORMAT (2, 1)) { \
789 darwin_non_lazy_pcrel (ASM_OUT_FILE, ADDR); \
790 goto DONE; \
791 }
792
793 /* Experimentally, putting jump tables in text is faster on SPEC.
794 Also this is needed for correctness for coalesced functions. */
795
796 #ifndef JUMP_TABLES_IN_TEXT_SECTION
797 #define JUMP_TABLES_IN_TEXT_SECTION 1
798 #endif
799
800 #define TARGET_TERMINATE_DW2_EH_FRAME_INFO false
801
802 #define TARGET_ASM_INIT_SECTIONS darwin_init_sections
803 #undef TARGET_ASM_NAMED_SECTION
804 #define TARGET_ASM_NAMED_SECTION darwin_asm_named_section
805
806 #define DARWIN_REGISTER_TARGET_PRAGMAS() \
807 do { \
808 c_register_pragma (0, "mark", darwin_pragma_ignore); \
809 c_register_pragma (0, "options", darwin_pragma_options); \
810 c_register_pragma (0, "segment", darwin_pragma_ignore); \
811 c_register_pragma (0, "unused", darwin_pragma_unused); \
812 } while (0)
813
814 #undef ASM_APP_ON
815 #define ASM_APP_ON ""
816 #undef ASM_APP_OFF
817 #define ASM_APP_OFF ""
818
819 void darwin_register_frameworks (const char *, const char *, int);
820 void darwin_register_objc_includes (const char *, const char *, int);
821 #define TARGET_EXTRA_PRE_INCLUDES darwin_register_objc_includes
822 #define TARGET_EXTRA_INCLUDES darwin_register_frameworks
823
824 void add_framework_path (char *);
825 #define TARGET_OPTF add_framework_path
826
827 #define TARGET_POSIX_IO
828
829 /* All new versions of Darwin have C99 functions. */
830 #define TARGET_C99_FUNCTIONS 1
831
832 #define WINT_TYPE "int"
833
834 #endif /* CONFIG_DARWIN_H */
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