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2005-03-29 Paul Brook <paul@codesourcery.com>
[official-gcc.git] / gcc / config / darwin.h
blobb26715e26effcf1902a7fcb40822500ca3af7b7f
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, 59 Temple Place - Suite 330,
22 Boston, MA 02111-1307, 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 /* Nonzero if the user has chosen to force sizeof(bool) to be 1
144 by providing the -mone-byte-bool switch. It would be better
145 to use SUBTARGET_SWITCHES for this instead of SUBTARGET_OPTIONS,
146 but there are no more bits in rs6000 TARGET_SWITCHES. Note
147 that this switch has no "no-" variant. */
148 extern const char *darwin_one_byte_bool;
149
150 extern int darwin_fix_and_continue;
151 extern const char *darwin_fix_and_continue_switch;
152
153 #undef SUBTARGET_OPTIONS
154 #define SUBTARGET_OPTIONS \
155 {"one-byte-bool", &darwin_one_byte_bool, N_("Set sizeof(bool) to 1"), 0 }, \
156 {"fix-and-continue", &darwin_fix_and_continue_switch, \
157 N_("Generate code suitable for fast turn around debugging"), 0}, \
158 {"no-fix-and-continue", &darwin_fix_and_continue_switch, \
159 N_("Don't generate code suitable for fast turn around debugging"), 0}
160
161 /* These compiler options take n arguments. */
162
163 #undef WORD_SWITCH_TAKES_ARG
164 #define WORD_SWITCH_TAKES_ARG(STR) \
165 (DEFAULT_WORD_SWITCH_TAKES_ARG (STR) ? 1 : \
166 !strcmp (STR, "Zallowable_client") ? 1 : \
167 !strcmp (STR, "arch") ? 1 : \
168 !strcmp (STR, "arch_only") ? 1 : \
169 !strcmp (STR, "Zbundle_loader") ? 1 : \
170 !strcmp (STR, "client_name") ? 1 : \
171 !strcmp (STR, "compatibility_version") ? 1 : \
172 !strcmp (STR, "current_version") ? 1 : \
173 !strcmp (STR, "Zdylib_file") ? 1 : \
174 !strcmp (STR, "Zexported_symbols_list") ? 1 : \
175 !strcmp (STR, "Zimage_base") ? 1 : \
176 !strcmp (STR, "Zinit") ? 1 : \
177 !strcmp (STR, "Zinstall_name") ? 1 : \
178 !strcmp (STR, "Zmultiplydefinedunused") ? 1 : \
179 !strcmp (STR, "Zmultiply_defined") ? 1 : \
180 !strcmp (STR, "precomp-trustfile") ? 1 : \
181 !strcmp (STR, "read_only_relocs") ? 1 : \
182 !strcmp (STR, "sectcreate") ? 3 : \
183 !strcmp (STR, "sectorder") ? 3 : \
184 !strcmp (STR, "Zsegaddr") ? 2 : \
185 !strcmp (STR, "Zsegs_read_only_addr") ? 1 : \
186 !strcmp (STR, "Zsegs_read_write_addr") ? 1 : \
187 !strcmp (STR, "Zseg_addr_table") ? 1 : \
188 !strcmp (STR, "Zseg_addr_table_filename") ?1 :\
189 !strcmp (STR, "seg1addr") ? 1 : \
190 !strcmp (STR, "segprot") ? 3 : \
191 !strcmp (STR, "sub_library") ? 1 : \
192 !strcmp (STR, "sub_umbrella") ? 1 : \
193 !strcmp (STR, "umbrella") ? 1 : \
194 !strcmp (STR, "undefined") ? 1 : \
195 !strcmp (STR, "Zunexported_symbols_list") ? 1 : \
196 !strcmp (STR, "Zweak_reference_mismatches") ? 1 : \
197 !strcmp (STR, "pagezero_size") ? 1 : \
198 !strcmp (STR, "segs_read_only_addr") ? 1 : \
199 !strcmp (STR, "segs_read_write_addr") ? 1 : \
200 !strcmp (STR, "sectalign") ? 3 : \
201 !strcmp (STR, "sectobjectsymbols") ? 2 : \
202 !strcmp (STR, "segcreate") ? 3 : \
203 !strcmp (STR, "dylinker_install_name") ? 1 : \
204 0)
205
206 /* Machine dependent cpp options. __APPLE_CC__ is defined as the
207 Apple include files expect it to be defined and won't work if it
208 isn't. */
209
210 #undef CPP_SPEC
211 #define CPP_SPEC "%{static:%{!dynamic:-D__STATIC__}}%{!static:-D__DYNAMIC__}\
212 -D__APPLE_CC__=1"
213
214 /* This is mostly a clone of the standard LINK_COMMAND_SPEC, plus
215 precomp, libtool, and fat build additions. Also we
216 don't specify a second %G after %L because libSystem is
217 self-contained and doesn't need to link against libgcc.a. */
218 /* In general, random Darwin linker flags should go into LINK_SPEC
219 instead of LINK_COMMAND_SPEC. The command spec is better for
220 specifying the handling of options understood by generic Unix
221 linkers, and for positional arguments like libraries. */
222 #define LINK_COMMAND_SPEC "\
223 %{!fdump=*:%{!fsyntax-only:%{!precomp:%{!c:%{!M:%{!MM:%{!E:%{!S:\
224 %{!Zdynamiclib:%(linker)}%{Zdynamiclib:/usr/bin/libtool} \
225 %l %X %{d} %{s} %{t} %{Z} \
226 %{!Zdynamiclib:%{A} %{e*} %{m} %{N} %{n} %{r} %{u*} %{x} %{z}} \
227 %{@:-o %f%u.out}%{!@:%{o*}%{!o:-o a.out}} \
228 %{!Zdynamiclib:%{!A:%{!nostdlib:%{!nostartfiles:%S}}}} \
229 %{L*} %(link_libgcc) %o %{fprofile-arcs|fprofile-generate|coverage:-lgcov} \
230 %{!nostdlib:%{!nodefaultlibs:%G %L}} \
231 %{!A:%{!nostdlib:%{!nostartfiles:%E}}} %{T*} %{F*} }}}}}}}}"
232
233 /* Please keep the random linker options in alphabetical order (modulo
234 'Z' and 'no' prefixes). Options that can only go to one of libtool
235 or ld must be listed twice, under both !Zdynamiclib and
236 Zdynamiclib, with one of the cases reporting an error. */
237 /* Note that options taking arguments may appear multiple times on a
238 command line with different arguments each time, so put a * after
239 their names so all of them get passed. */
240 #define LINK_SPEC \
241 "%{static}%{!static:-dynamic} \
242 %{fgnu-runtime:%:replace-outfile(-lobjc -lobjc-gnu)}\
243 %{!Zdynamiclib: \
244 %{Zforce_cpusubtype_ALL:-arch %(darwin_arch) -force_cpusubtype_ALL} \
245 %{!Zforce_cpusubtype_ALL:-arch %(darwin_subarch)} \
246 %{Zbundle:-bundle} \
247 %{Zbundle_loader*:-bundle_loader %*} \
248 %{client_name*} \
249 %{compatibility_version*:%e-compatibility_version only allowed with -dynamiclib\
250 } \
251 %{current_version*:%e-current_version only allowed with -dynamiclib} \
252 %{Zforce_flat_namespace:-force_flat_namespace} \
253 %{Zinstall_name*:%e-install_name only allowed with -dynamiclib} \
254 %{keep_private_externs} \
255 %{private_bundle} \
256 } \
257 %{Zdynamiclib: \
258 %{Zbundle:%e-bundle not allowed with -dynamiclib} \
259 %{Zbundle_loader*:%e-bundle_loader not allowed with -dynamiclib} \
260 %{client_name*:%e-client_name not allowed with -dynamiclib} \
261 %{compatibility_version*} \
262 %{current_version*} \
263 %{Zforce_cpusubtype_ALL:-arch_only %(darwin_arch)} \
264 %{!Zforce_cpusubtype_ALL: -arch_only %(darwin_subarch)} \
265 %{Zforce_flat_namespace:%e-force_flat_namespace not allowed with -dynamiclib} \
266 %{Zinstall_name*:-install_name %*} \
267 %{keep_private_externs:%e-keep_private_externs not allowed with -dynamiclib} \
268 %{private_bundle:%e-private_bundle not allowed with -dynamiclib} \
269 } \
270 %{Zall_load:-all_load}%{Zdynamiclib:%{!Zall_load:-noall_load}} \
271 %{Zallowable_client*:-allowable_client %*} \
272 %{Zbind_at_load:-bind_at_load} \
273 %{Zarch_errors_fatal:-arch_errors_fatal} \
274 %{Zdead_strip:-dead_strip} \
275 %{Zno_dead_strip_inits_and_terms:-no_dead_strip_inits_and_terms} \
276 %{Zdylib_file*:-dylib_file %*} \
277 %{Zdynamic:-dynamic}\
278 %{Zexported_symbols_list*:-exported_symbols_list %*} \
279 %{Zflat_namespace:-flat_namespace} \
280 %{headerpad_max_install_names*} \
281 %{Zimage_base*:-image_base %*} \
282 %{Zinit*:-init %*} \
283 %{nomultidefs} \
284 %{Zmulti_module:-multi_module} %{Zsingle_module:-single_module} \
285 %{Zmultiply_defined*:-multiply_defined %*} \
286 %{Zmultiplydefinedunused*:-multiply_defined_unused %*} \
287 %{prebind} %{noprebind} %{nofixprebinding} %{prebind_all_twolevel_modules} \
288 %{read_only_relocs} \
289 %{sectcreate*} %{sectorder*} %{seg1addr*} %{segprot*} \
290 %{Zsegaddr*:-segaddr %*} \
291 %{Zsegs_read_only_addr*:-segs_read_only_addr %*} \
292 %{Zsegs_read_write_addr*:-segs_read_write_addr %*} \
293 %{Zseg_addr_table*: -seg_addr_table %*} \
294 %{Zseg_addr_table_filename*:-seg_addr_table_filename %*} \
295 %{sub_library*} %{sub_umbrella*} \
296 %{twolevel_namespace} %{twolevel_namespace_hints} \
297 %{umbrella*} \
298 %{undefined*} \
299 %{Zunexported_symbols_list*:-unexported_symbols_list %*} \
300 %{Zweak_reference_mismatches*:-weak_reference_mismatches %*} \
301 %{!Zweak_reference_mismatches*:-weak_reference_mismatches non-weak} \
302 %{X} \
303 %{y*} \
304 %{w} \
305 %{pagezero_size*} %{segs_read_*} %{seglinkedit} %{noseglinkedit} \
306 %{sectalign*} %{sectobjectsymbols*} %{segcreate*} %{whyload} \
307 %{whatsloaded} %{dylinker_install_name*} \
308 %{dylinker} %{Mach} "
309
310
311 /* Machine dependent libraries but do not redefine it if we already on 7.0 and
312 above as it needs to link with libmx also. */
313
314 #ifndef LIB_SPEC
315 #define LIB_SPEC "%{!static:-lSystem}"
316 #endif
317
318 /* -dynamiclib implies -shared-libgcc just like -shared would on linux. */
319 #define REAL_LIBGCC_SPEC \
320 "%{static|static-libgcc:-lgcc -lgcc_eh}\
321 %{!static:%{!static-libgcc:\
322 %{!Zdynamiclib:%{!shared-libgcc:-lgcc -lgcc_eh}\
323 %{shared-libgcc:-lgcc_s -lgcc}} %{Zdynamiclib:-lgcc_s -lgcc}}}"
324
325 /* We specify crt0.o as -lcrt0.o so that ld will search the library path. */
326 /* We don't want anything to do with crt2.o in the 64-bit case;
327 testing the PowerPC-specific -m64 flag here is a little irregular,
328 but it's overkill to make copies of this spec for each target
329 arch. */
330
331 #undef STARTFILE_SPEC
332 #define STARTFILE_SPEC \
333 "%{!Zdynamiclib:%{Zbundle:%{!static:-lbundle1.o}} \
334 %{!Zbundle:%{pg:%{static:-lgcrt0.o} \
335 %{!static:%{object:-lgcrt0.o} \
336 %{!object:%{preload:-lgcrt0.o} \
337 %{!preload:-lgcrt1.o %{!m64: crt2.o%s}}}}} \
338 %{!pg:%{static:-lcrt0.o} \
339 %{!static:%{object:-lcrt0.o} \
340 %{!object:%{preload:-lcrt0.o} \
341 %{!preload:-lcrt1.o %{!m64: crt2.o%s}}}}}}}"
342
343 /* The native Darwin linker doesn't necessarily place files in the order
344 that they're specified on the link line. Thus, it is pointless
345 to put anything in ENDFILE_SPEC. */
346 /* #define ENDFILE_SPEC "" */
347
348 /* Default Darwin ASM_SPEC, very simple. */
349 #define ASM_SPEC "-arch %(darwin_arch) \
350 %{Zforce_cpusubtype_ALL:-force_cpusubtype_ALL}"
351
352 /* We use Dbx symbol format. */
353
354 #define DBX_DEBUGGING_INFO 1
355
356 /* Also enable Dwarf 2 as an option. */
357 #define DWARF2_DEBUGGING_INFO
358 #define PREFERRED_DEBUGGING_TYPE DBX_DEBUG
359
360 #define DEBUG_FRAME_SECTION "__DWARFA,__debug_frame,coalesced,no_toc+strip_static_syms"
361 #define DEBUG_INFO_SECTION "__DWARFA,__debug_info"
362 #define DEBUG_ABBREV_SECTION "__DWARFA,__debug_abbrev"
363 #define DEBUG_ARANGES_SECTION "__DWARFA,__debug_aranges"
364 #define DEBUG_MACINFO_SECTION "__DWARFA,__debug_macinfo"
365 #define DEBUG_LINE_SECTION "__DWARFA,__debug_line"
366 #define DEBUG_LOC_SECTION "__DWARFA,__debug_loc"
367 #define DEBUG_PUBNAMES_SECTION "__DWARFA,__debug_pubnames"
368 #define DEBUG_STR_SECTION "__DWARFA,__debug_str"
369 #define DEBUG_RANGES_SECTION "__DWARFA,__debug_ranges"
370
371 /* When generating stabs debugging, use N_BINCL entries. */
372
373 #define DBX_USE_BINCL
374
375 /* There is no limit to the length of stabs strings. */
376
377 #define DBX_CONTIN_LENGTH 0
378
379 /* gdb needs a null N_SO at the end of each file for scattered loading. */
380
381 #define DBX_OUTPUT_NULL_N_SO_AT_MAIN_SOURCE_FILE_END
382
383 /* GCC's definition of 'one_only' is the same as its definition of 'weak'. */
384 #define MAKE_DECL_ONE_ONLY(DECL) (DECL_WEAK (DECL) = 1)
385
386 /* Mach-O supports 'weak imports', and 'weak definitions' in coalesced
387 sections. machopic_select_section ensures that weak variables go in
388 coalesced sections. Weak aliases (or any other kind of aliases) are
389 not supported. Weak symbols that aren't visible outside the .s file
390 are not supported. */
391 #define ASM_WEAKEN_DECL(FILE, DECL, NAME, ALIAS) \
392 do { \
393 if (ALIAS) \
394 { \
395 warning ("alias definitions not supported in Mach-O; ignored"); \
396 break; \
397 } \
398 \
399 if (! DECL_EXTERNAL (DECL) && TREE_PUBLIC (DECL)) \
400 targetm.asm_out.globalize_label (FILE, NAME); \
401 if (DECL_EXTERNAL (DECL)) \
402 fputs ("\t.weak_reference ", FILE); \
403 else if (! lookup_attribute ("weak", DECL_ATTRIBUTES (DECL)) \
404 && lookup_attribute ("weak_import", DECL_ATTRIBUTES (DECL))) \
405 break; \
406 else if (TREE_PUBLIC (DECL)) \
407 fputs ("\t.weak_definition ", FILE); \
408 else \
409 break; \
410 assemble_name (FILE, NAME); \
411 fputc ('\n', FILE); \
412 } while (0)
413
414 /* Darwin has the pthread routines in libSystem, which every program
415 links to, so there's no need for weak-ness for that. */
416 #define GTHREAD_USE_WEAK 0
417
418 /* The Darwin linker imposes two limitations on common symbols: they
419 can't have hidden visibility, and they can't appear in dylibs. As
420 a consequence, we should never use common symbols to represent
421 vague linkage. */
422 #undef USE_COMMON_FOR_ONE_ONLY
423 #define USE_COMMON_FOR_ONE_ONLY 0
424
425 /* The Darwin linker doesn't want coalesced symbols to appear in
426 a static archive's table of contents. */
427 #undef TARGET_WEAK_NOT_IN_ARCHIVE_TOC
428 #define TARGET_WEAK_NOT_IN_ARCHIVE_TOC 1
429
430 /* We make exception information linkonce. */
431 #undef TARGET_USES_WEAK_UNWIND_INFO
432 #define TARGET_USES_WEAK_UNWIND_INFO 1
433
434 /* We need to use a nonlocal label for the start of an EH frame: the
435 Darwin linker requires that a coalesced section start with a label. */
436 #undef FRAME_BEGIN_LABEL
437 #define FRAME_BEGIN_LABEL "EH_frame"
438
439 /* Emit a label for the FDE corresponding to DECL. EMPTY means
440 emit a label for an empty FDE. */
441 #define TARGET_ASM_EMIT_UNWIND_LABEL darwin_emit_unwind_label
442
443 /* Our profiling scheme doesn't LP labels and counter words. */
444
445 #define NO_PROFILE_COUNTERS 1
446
447 #undef INIT_SECTION_ASM_OP
448 #define INIT_SECTION_ASM_OP
449
450 #undef INVOKE__main
451
452 #define TARGET_ASM_CONSTRUCTOR machopic_asm_out_constructor
453 #define TARGET_ASM_DESTRUCTOR machopic_asm_out_destructor
454
455 /* Always prefix with an underscore. */
456
457 #define USER_LABEL_PREFIX "_"
458
459 /* Don't output a .file directive. That is only used by the assembler for
460 error reporting. */
461 #undef TARGET_ASM_FILE_START_FILE_DIRECTIVE
462 #define TARGET_ASM_FILE_START_FILE_DIRECTIVE false
463
464 #undef TARGET_ASM_FILE_END
465 #define TARGET_ASM_FILE_END darwin_file_end
466
467 #define ASM_OUTPUT_SKIP(FILE,SIZE) \
468 fprintf (FILE, "\t.space "HOST_WIDE_INT_PRINT_UNSIGNED"\n", SIZE)
469
470 /* Give ObjC methods pretty symbol names. */
471
472 #undef OBJC_GEN_METHOD_LABEL
473 #define OBJC_GEN_METHOD_LABEL(BUF,IS_INST,CLASS_NAME,CAT_NAME,SEL_NAME,NUM) \
474 do { if (CAT_NAME) \
475 sprintf (BUF, "%c[%s(%s) %s]", (IS_INST) ? '-' : '+', \
476 (CLASS_NAME), (CAT_NAME), (SEL_NAME)); \
477 else \
478 sprintf (BUF, "%c[%s %s]", (IS_INST) ? '-' : '+', \
479 (CLASS_NAME), (SEL_NAME)); \
480 } while (0)
481
482 /* The RTTI data (e.g., __ti4name) is common and public (and static),
483 but it does need to be referenced via indirect PIC data pointers.
484 The machopic_define_symbol calls are telling the machopic subsystem
485 that the name *is* defined in this module, so it doesn't need to
486 make them indirect. */
487
488 #undef ASM_DECLARE_OBJECT_NAME
489 #define ASM_DECLARE_OBJECT_NAME(FILE, NAME, DECL) \
490 do { \
491 const char *xname = NAME; \
492 if (GET_CODE (XEXP (DECL_RTL (DECL), 0)) != SYMBOL_REF) \
493 xname = IDENTIFIER_POINTER (DECL_NAME (DECL)); \
494 if (! DECL_WEAK (DECL) \
495 && ((TREE_STATIC (DECL) \
496 && (!DECL_COMMON (DECL) || !TREE_PUBLIC (DECL))) \
497 || DECL_INITIAL (DECL))) \
498 machopic_define_symbol (DECL_RTL (DECL)); \
499 if ((TREE_STATIC (DECL) \
500 && (!DECL_COMMON (DECL) || !TREE_PUBLIC (DECL))) \
501 || DECL_INITIAL (DECL)) \
502 (* targetm.encode_section_info) (DECL, DECL_RTL (DECL), false); \
503 ASM_OUTPUT_LABEL (FILE, xname); \
504 /* Darwin doesn't support zero-size objects, so give them a \
505 byte. */ \
506 if (tree_low_cst (DECL_SIZE_UNIT (DECL), 1) == 0) \
507 assemble_zeros (1); \
508 } while (0)
509
510 #define ASM_DECLARE_FUNCTION_NAME(FILE, NAME, DECL) \
511 do { \
512 const char *xname = NAME; \
513 if (GET_CODE (XEXP (DECL_RTL (DECL), 0)) != SYMBOL_REF) \
514 xname = IDENTIFIER_POINTER (DECL_NAME (DECL)); \
515 if (! DECL_WEAK (DECL) \
516 && ((TREE_STATIC (DECL) \
517 && (!DECL_COMMON (DECL) || !TREE_PUBLIC (DECL))) \
518 || DECL_INITIAL (DECL))) \
519 machopic_define_symbol (DECL_RTL (DECL)); \
520 if ((TREE_STATIC (DECL) \
521 && (!DECL_COMMON (DECL) || !TREE_PUBLIC (DECL))) \
522 || DECL_INITIAL (DECL)) \
523 (* targetm.encode_section_info) (DECL, DECL_RTL (DECL), false); \
524 ASM_OUTPUT_LABEL (FILE, xname); \
525 } while (0)
526
527 #define ASM_DECLARE_CONSTANT_NAME(FILE, NAME, EXP, SIZE) \
528 do { \
529 ASM_OUTPUT_LABEL (FILE, NAME); \
530 /* Darwin doesn't support zero-size objects, so give them a \
531 byte. */ \
532 if ((SIZE) == 0) \
533 assemble_zeros (1); \
534 } while (0)
535
536 /* Wrap new method names in quotes so the assembler doesn't gag.
537 Make Objective-C internal symbols local. */
538
539 #undef ASM_OUTPUT_LABELREF
540 #define ASM_OUTPUT_LABELREF(FILE,NAME) \
541 do { \
542 const char *xname = (NAME); \
543 if (! strcmp (xname, "<pic base>")) \
544 machopic_output_function_base_name(FILE); \
545 else if (xname[0] == '&' || xname[0] == '*') \
546 { \
547 int len = strlen (xname); \
548 if (len > 6 && !strcmp ("$stub", xname + len - 5)) \
549 machopic_validate_stub_or_non_lazy_ptr (xname); \
550 else if (len > 7 && !strcmp ("$stub\"", xname + len - 6)) \
551 machopic_validate_stub_or_non_lazy_ptr (xname); \
552 else if (len > 14 && !strcmp ("$non_lazy_ptr", xname + len - 13)) \
553 machopic_validate_stub_or_non_lazy_ptr (xname); \
554 fputs (&xname[1], FILE); \
555 } \
556 else if (xname[0] == '+' || xname[0] == '-') \
557 fprintf (FILE, "\"%s\"", xname); \
558 else if (!strncmp (xname, "_OBJC_", 6)) \
559 fprintf (FILE, "L%s", xname); \
560 else if (!strncmp (xname, ".objc_class_name_", 17)) \
561 fprintf (FILE, "%s", xname); \
562 else \
563 asm_fprintf (FILE, "%U%s", xname); \
564 } while (0)
565
566 /* Output before executable code. */
567 #undef TEXT_SECTION_ASM_OP
568 #define TEXT_SECTION_ASM_OP "\t.text"
569
570 /* Output before writable data. */
571
572 #undef DATA_SECTION_ASM_OP
573 #define DATA_SECTION_ASM_OP "\t.data"
574
575 #undef ALIGN_ASM_OP
576 #define ALIGN_ASM_OP ".align"
577
578 #undef ASM_OUTPUT_ALIGN
579 #define ASM_OUTPUT_ALIGN(FILE,LOG) \
580 if ((LOG) != 0) \
581 fprintf (FILE, "\t%s %d\n", ALIGN_ASM_OP, (LOG))
582
583 /* Ensure correct alignment of bss data. */
584
585 #undef ASM_OUTPUT_ALIGNED_DECL_LOCAL
586 #define ASM_OUTPUT_ALIGNED_DECL_LOCAL(FILE, DECL, NAME, SIZE, ALIGN) \
587 do { \
588 unsigned HOST_WIDE_INT _new_size = SIZE; \
589 fputs (".lcomm ", (FILE)); \
590 assemble_name ((FILE), (NAME)); \
591 if (_new_size == 0) _new_size = 1; \
592 fprintf ((FILE), ","HOST_WIDE_INT_PRINT_UNSIGNED",%u\n", _new_size, \
593 floor_log2 ((ALIGN) / BITS_PER_UNIT)); \
594 if ((DECL) && ((TREE_STATIC (DECL) \
595 && (!DECL_COMMON (DECL) || !TREE_PUBLIC (DECL))) \
596 || DECL_INITIAL (DECL))) \
597 { \
598 (* targetm.encode_section_info) (DECL, DECL_RTL (DECL), false); \
599 machopic_define_symbol (DECL_RTL (DECL)); \
600 } \
601 } while (0)
602
603 /* The maximum alignment which the object file format can support.
604 For Mach-O, this is 2^15. */
605
606 #undef MAX_OFILE_ALIGNMENT
607 #define MAX_OFILE_ALIGNMENT 0x8000
608
609 /* Create new Mach-O sections. */
610
611 #undef SECTION_FUNCTION
612 #define SECTION_FUNCTION(FUNCTION, SECTION, DIRECTIVE, OBJC) \
613 extern void FUNCTION (void); \
614 void \
615 FUNCTION (void) \
616 { \
617 if (in_section != SECTION) \
618 { \
619 if (OBJC) \
620 objc_section_init (); \
621 if (asm_out_file) \
622 fputs ("\t" DIRECTIVE "\n", asm_out_file); \
623 in_section = SECTION; \
624 } \
625 } \
626
627 /* Darwin uses many types of special sections. */
628
629 #undef EXTRA_SECTIONS
630 #define EXTRA_SECTIONS \
631 in_text_coal, in_text_unlikely, in_text_unlikely_coal, \
632 in_const, in_const_data, in_cstring, in_literal4, in_literal8, \
633 in_const_coal, in_const_data_coal, in_data_coal, \
634 in_constructor, in_destructor, in_mod_init, in_mod_term, \
635 in_objc_class, in_objc_meta_class, in_objc_category, \
636 in_objc_class_vars, in_objc_instance_vars, \
637 in_objc_cls_meth, in_objc_inst_meth, \
638 in_objc_cat_cls_meth, in_objc_cat_inst_meth, \
639 in_objc_selector_refs, \
640 in_objc_selector_fixup, \
641 in_objc_symbols, in_objc_module_info, \
642 in_objc_protocol, in_objc_string_object, \
643 in_objc_constant_string_object, \
644 in_objc_image_info, \
645 in_objc_class_names, in_objc_meth_var_names, \
646 in_objc_meth_var_types, in_objc_cls_refs, \
647 in_machopic_nl_symbol_ptr, \
648 in_machopic_lazy_symbol_ptr, \
649 in_machopic_symbol_stub, \
650 in_machopic_symbol_stub1, \
651 in_machopic_picsymbol_stub, \
652 in_machopic_picsymbol_stub1, \
653 in_darwin_exception, in_darwin_eh_frame, \
654 num_sections
655
656 #undef EXTRA_SECTION_FUNCTIONS
657 #define EXTRA_SECTION_FUNCTIONS \
658 static void objc_section_init (void); \
659 SECTION_FUNCTION (text_coal_section, \
660 in_text_coal, \
661 ".section __TEXT,__textcoal_nt,coalesced," \
662 "pure_instructions", 0) \
663 SECTION_FUNCTION (text_unlikely_section, \
664 in_text_unlikely, \
665 ".section __TEXT,__text_unlikely,coalesced," \
666 "pure_instructions", 0) \
667 SECTION_FUNCTION (text_unlikely_coal_section, \
668 in_text_unlikely_coal, \
669 ".section __TEXT,__text_unlikely_coal," \
670 "coalesced,pure_instructions", 0) \
671 SECTION_FUNCTION (const_section, \
672 in_const, \
673 ".const", 0) \
674 SECTION_FUNCTION (const_coal_section, \
675 in_const_coal, \
676 ".section __TEXT,__const_coal,coalesced", 0) \
677 SECTION_FUNCTION (const_data_section, \
678 in_const_data, \
679 ".const_data", 0) \
680 SECTION_FUNCTION (const_data_coal_section, \
681 in_const_data_coal, \
682 ".section __DATA,__const_coal,coalesced", 0) \
683 SECTION_FUNCTION (data_coal_section, \
684 in_data_coal, \
685 ".section __DATA,__datacoal_nt,coalesced", 0) \
686 SECTION_FUNCTION (cstring_section, \
687 in_cstring, \
688 ".cstring", 0) \
689 SECTION_FUNCTION (literal4_section, \
690 in_literal4, \
691 ".literal4", 0) \
692 SECTION_FUNCTION (literal8_section, \
693 in_literal8, \
694 ".literal8", 0) \
695 SECTION_FUNCTION (constructor_section, \
696 in_constructor, \
697 ".constructor", 0) \
698 SECTION_FUNCTION (mod_init_section, \
699 in_mod_init, \
700 ".mod_init_func", 0) \
701 SECTION_FUNCTION (mod_term_section, \
702 in_mod_term, \
703 ".mod_term_func", 0) \
704 SECTION_FUNCTION (destructor_section, \
705 in_destructor, \
706 ".destructor", 0) \
707 SECTION_FUNCTION (objc_class_section, \
708 in_objc_class, \
709 ".objc_class", 1) \
710 SECTION_FUNCTION (objc_meta_class_section, \
711 in_objc_meta_class, \
712 ".objc_meta_class", 1) \
713 SECTION_FUNCTION (objc_category_section, \
714 in_objc_category, \
715 ".objc_category", 1) \
716 SECTION_FUNCTION (objc_class_vars_section, \
717 in_objc_class_vars, \
718 ".objc_class_vars", 1) \
719 SECTION_FUNCTION (objc_instance_vars_section, \
720 in_objc_instance_vars, \
721 ".objc_instance_vars", 1) \
722 SECTION_FUNCTION (objc_cls_meth_section, \
723 in_objc_cls_meth, \
724 ".objc_cls_meth", 1) \
725 SECTION_FUNCTION (objc_inst_meth_section, \
726 in_objc_inst_meth, \
727 ".objc_inst_meth", 1) \
728 SECTION_FUNCTION (objc_cat_cls_meth_section, \
729 in_objc_cat_cls_meth, \
730 ".objc_cat_cls_meth", 1) \
731 SECTION_FUNCTION (objc_cat_inst_meth_section, \
732 in_objc_cat_inst_meth, \
733 ".objc_cat_inst_meth", 1) \
734 SECTION_FUNCTION (objc_selector_refs_section, \
735 in_objc_selector_refs, \
736 ".objc_message_refs", 1) \
737 SECTION_FUNCTION (objc_selector_fixup_section, \
738 in_objc_selector_fixup, \
739 ".section __OBJC, __sel_fixup, regular, no_dead_strip", 1) \
740 SECTION_FUNCTION (objc_symbols_section, \
741 in_objc_symbols, \
742 ".objc_symbols", 1) \
743 SECTION_FUNCTION (objc_module_info_section, \
744 in_objc_module_info, \
745 ".objc_module_info", 1) \
746 SECTION_FUNCTION (objc_protocol_section, \
747 in_objc_protocol, \
748 ".objc_protocol", 1) \
749 SECTION_FUNCTION (objc_string_object_section, \
750 in_objc_string_object, \
751 ".objc_string_object", 1) \
752 SECTION_FUNCTION (objc_constant_string_object_section, \
753 in_objc_constant_string_object, \
754 ".section __OBJC, __cstring_object, regular, " \
755 "no_dead_strip", 1) \
756 /* Fix-and-Continue image marker. */ \
757 SECTION_FUNCTION (objc_image_info_section, \
758 in_objc_image_info, \
759 ".section __OBJC, __image_info, regular, " \
760 "no_dead_strip", 1) \
761 SECTION_FUNCTION (objc_class_names_section, \
762 in_objc_class_names, \
763 ".objc_class_names", 1) \
764 SECTION_FUNCTION (objc_meth_var_names_section, \
765 in_objc_meth_var_names, \
766 ".objc_meth_var_names", 1) \
767 SECTION_FUNCTION (objc_meth_var_types_section, \
768 in_objc_meth_var_types, \
769 ".objc_meth_var_types", 1) \
770 SECTION_FUNCTION (objc_cls_refs_section, \
771 in_objc_cls_refs, \
772 ".objc_cls_refs", 1) \
773 \
774 SECTION_FUNCTION (machopic_lazy_symbol_ptr_section, \
775 in_machopic_lazy_symbol_ptr, \
776 ".lazy_symbol_pointer", 0) \
777 SECTION_FUNCTION (machopic_nl_symbol_ptr_section, \
778 in_machopic_nl_symbol_ptr, \
779 ".non_lazy_symbol_pointer", 0) \
780 SECTION_FUNCTION (machopic_symbol_stub_section, \
781 in_machopic_symbol_stub, \
782 ".symbol_stub", 0) \
783 SECTION_FUNCTION (machopic_symbol_stub1_section, \
784 in_machopic_symbol_stub1, \
785 ".section __TEXT,__symbol_stub1,symbol_stubs," \
786 "pure_instructions,16", 0) \
787 SECTION_FUNCTION (machopic_picsymbol_stub_section, \
788 in_machopic_picsymbol_stub, \
789 ".picsymbol_stub", 0) \
790 SECTION_FUNCTION (machopic_picsymbol_stub1_section, \
791 in_machopic_picsymbol_stub1, \
792 ".section __TEXT,__picsymbolstub1,symbol_stubs," \
793 "pure_instructions,32", 0) \
794 SECTION_FUNCTION (darwin_exception_section, \
795 in_darwin_exception, \
796 ".section __DATA,__gcc_except_tab", 0) \
797 SECTION_FUNCTION (darwin_eh_frame_section, \
798 in_darwin_eh_frame, \
799 ".section " EH_FRAME_SECTION_NAME ",__eh_frame" \
800 EH_FRAME_SECTION_ATTR, 0) \
801 \
802 static void \
803 objc_section_init (void) \
804 { \
805 static int been_here = 0; \
806 \
807 if (been_here == 0) \
808 { \
809 been_here = 1; \
810 /* written, cold -> hot */ \
811 objc_cat_cls_meth_section (); \
812 objc_cat_inst_meth_section (); \
813 objc_string_object_section (); \
814 objc_constant_string_object_section (); \
815 objc_selector_refs_section (); \
816 objc_selector_fixup_section (); \
817 objc_cls_refs_section (); \
818 objc_class_section (); \
819 objc_meta_class_section (); \
820 /* shared, hot -> cold */ \
821 objc_cls_meth_section (); \
822 objc_inst_meth_section (); \
823 objc_protocol_section (); \
824 objc_class_names_section (); \
825 objc_meth_var_types_section (); \
826 objc_meth_var_names_section (); \
827 objc_category_section (); \
828 objc_class_vars_section (); \
829 objc_instance_vars_section (); \
830 objc_module_info_section (); \
831 objc_symbols_section (); \
832 } \
833 }
834
835 #define READONLY_DATA_SECTION const_section
836
837 #undef TARGET_ASM_SELECT_SECTION
838 #define TARGET_ASM_SELECT_SECTION machopic_select_section
839 #define USE_SELECT_SECTION_FOR_FUNCTIONS
840
841 #undef TARGET_ASM_SELECT_RTX_SECTION
842 #define TARGET_ASM_SELECT_RTX_SECTION machopic_select_rtx_section
843 #undef TARGET_ASM_UNIQUE_SECTION
844 #define TARGET_ASM_UNIQUE_SECTION darwin_unique_section
845 #undef TARGET_ASM_FUNCTION_RODATA_SECTION
846 #define TARGET_ASM_FUNCTION_RODATA_SECTION default_no_function_rodata_section
847
848
849 #define ASM_DECLARE_UNRESOLVED_REFERENCE(FILE,NAME) \
850 do { \
851 if (FILE) { \
852 if (MACHOPIC_INDIRECT) \
853 fprintf (FILE, "\t.lazy_reference "); \
854 else \
855 fprintf (FILE, "\t.reference "); \
856 assemble_name (FILE, NAME); \
857 fprintf (FILE, "\n"); \
858 } \
859 } while (0)
860
861 #define ASM_DECLARE_CLASS_REFERENCE(FILE,NAME) \
862 do { \
863 if (FILE) { \
864 fprintf (FILE, "\t"); \
865 assemble_name (FILE, NAME); \
866 fprintf (FILE, "=0\n"); \
867 (*targetm.asm_out.globalize_label) (FILE, NAME); \
868 } \
869 } while (0)
870
871 /* Globalizing directive for a label. */
872 #define GLOBAL_ASM_OP ".globl "
873 #define TARGET_ASM_GLOBALIZE_LABEL darwin_globalize_label
874
875 /* Emit an assembler directive to set visibility for a symbol. Used
876 to support visibility attribute and Darwin's private extern
877 feature. */
878 #undef TARGET_ASM_ASSEMBLE_VISIBILITY
879 #define TARGET_ASM_ASSEMBLE_VISIBILITY darwin_assemble_visibility
880
881 /* Extra attributes for Darwin. */
882 #define SUBTARGET_ATTRIBUTE_TABLE \
883 /* { name, min_len, max_len, decl_req, type_req, fn_type_req, handler } */ \
884 { "weak_import", 0, 0, true, false, false, \
885 darwin_handle_weak_import_attribute }
886
887 #undef ASM_GENERATE_INTERNAL_LABEL
888 #define ASM_GENERATE_INTERNAL_LABEL(LABEL,PREFIX,NUM) \
889 sprintf (LABEL, "*%s%ld", PREFIX, (long)(NUM))
890
891 #undef TARGET_ASM_MARK_DECL_PRESERVED
892 #define TARGET_ASM_MARK_DECL_PRESERVED darwin_mark_decl_preserved
893
894 /* Set on a symbol with SYMBOL_FLAG_FUNCTION or
895 MACHO_SYMBOL_FLAG_VARIABLE to indicate that the function or
896 variable has been defined in this translation unit. */
897
898 #define MACHO_SYMBOL_FLAG_VARIABLE (SYMBOL_FLAG_MACH_DEP)
899 #define MACHO_SYMBOL_FLAG_DEFINED ((SYMBOL_FLAG_MACH_DEP) << 1)
900
901 /* Set on a symbol to indicate when fix-and-continue style code
902 generation is being used and the symbol refers to a static symbol
903 that should be rebound from new instances of a translation unit to
904 the original instance of the data. */
905
906 #define MACHO_SYMBOL_STATIC ((SYMBOL_FLAG_MACH_DEP) << 2)
907
908 /* Symbolic names for various things we might know about a symbol. */
909
910 enum machopic_addr_class {
911 MACHOPIC_UNDEFINED,
912 MACHOPIC_DEFINED_DATA,
913 MACHOPIC_UNDEFINED_DATA,
914 MACHOPIC_DEFINED_FUNCTION,
915 MACHOPIC_UNDEFINED_FUNCTION
916 };
917
918 /* Macros defining the various PIC cases. */
919
920 #define MACHO_DYNAMIC_NO_PIC_P (TARGET_DYNAMIC_NO_PIC)
921 #define MACHOPIC_INDIRECT (flag_pic || MACHO_DYNAMIC_NO_PIC_P)
922 #define MACHOPIC_JUST_INDIRECT (flag_pic == 1 || MACHO_DYNAMIC_NO_PIC_P)
923 #define MACHOPIC_PURE (flag_pic == 2 && ! MACHO_DYNAMIC_NO_PIC_P)
924
925 #undef TARGET_ENCODE_SECTION_INFO
926 #define TARGET_ENCODE_SECTION_INFO darwin_encode_section_info
927 #undef TARGET_STRIP_NAME_ENCODING
928 #define TARGET_STRIP_NAME_ENCODING default_strip_name_encoding
929
930 #define GEN_BINDER_NAME_FOR_STUB(BUF,STUB,STUB_LENGTH) \
931 do { \
932 const char *const stub_ = (STUB); \
933 char *buffer_ = (BUF); \
934 strcpy (buffer_, stub_); \
935 if (stub_[0] == '"') \
936 { \
937 strcpy (buffer_ + (STUB_LENGTH) - 1, "_binder\""); \
938 } \
939 else \
940 { \
941 strcpy (buffer_ + (STUB_LENGTH), "_binder"); \
942 } \
943 } while (0)
944
945 #define GEN_SYMBOL_NAME_FOR_SYMBOL(BUF,SYMBOL,SYMBOL_LENGTH) \
946 do { \
947 const char *const symbol_ = (SYMBOL); \
948 char *buffer_ = (BUF); \
949 if (name_needs_quotes (symbol_) && symbol_[0] != '"') \
950 { \
951 sprintf (buffer_, "\"%s\"", symbol_); \
952 } \
953 else \
954 { \
955 strcpy (buffer_, symbol_); \
956 } \
957 } while (0)
958
959 /* Given a symbol name string, create the lazy pointer version
960 of the symbol name. */
961
962 #define GEN_LAZY_PTR_NAME_FOR_SYMBOL(BUF,SYMBOL,SYMBOL_LENGTH) \
963 do { \
964 const char *symbol_ = (SYMBOL); \
965 char *buffer_ = (BUF); \
966 if (symbol_[0] == '"') \
967 { \
968 strcpy (buffer_, "\"L"); \
969 strcpy (buffer_ + 2, symbol_ + 1); \
970 strcpy (buffer_ + (SYMBOL_LENGTH), "$lazy_ptr\""); \
971 } \
972 else if (name_needs_quotes (symbol_)) \
973 { \
974 strcpy (buffer_, "\"L"); \
975 strcpy (buffer_ + 2, symbol_); \
976 strcpy (buffer_ + (SYMBOL_LENGTH) + 2, "$lazy_ptr\""); \
977 } \
978 else \
979 { \
980 strcpy (buffer_, "L"); \
981 strcpy (buffer_ + 1, symbol_); \
982 strcpy (buffer_ + (SYMBOL_LENGTH) + 1, "$lazy_ptr"); \
983 } \
984 } while (0)
985
986 #define TARGET_ASM_EXCEPTION_SECTION darwin_exception_section
987
988 #define TARGET_ASM_EH_FRAME_SECTION darwin_eh_frame_section
989
990 #define EH_FRAME_SECTION_NAME "__TEXT"
991 #define EH_FRAME_SECTION_ATTR ",coalesced,no_toc+strip_static_syms+live_support"
992
993 /* Java runtime class list. */
994 #define JCR_SECTION_NAME "__DATA,jcr,regular,no_dead_strip"
995
996 #undef ASM_PREFERRED_EH_DATA_FORMAT
997 #define ASM_PREFERRED_EH_DATA_FORMAT(CODE,GLOBAL) \
998 (((CODE) == 2 && (GLOBAL) == 1) \
999 ? (DW_EH_PE_pcrel | DW_EH_PE_indirect | DW_EH_PE_sdata4) : \
1000 ((CODE) == 1 || (GLOBAL) == 0) ? DW_EH_PE_pcrel : DW_EH_PE_absptr)
1001
1002 #define ASM_OUTPUT_DWARF_DELTA(FILE,SIZE,LABEL1,LABEL2) \
1003 darwin_asm_output_dwarf_delta (FILE, SIZE, LABEL1, LABEL2)
1004
1005 #define ASM_MAYBE_OUTPUT_ENCODED_ADDR_RTX(ASM_OUT_FILE, ENCODING, SIZE, ADDR, DONE) \
1006 if (ENCODING == ASM_PREFERRED_EH_DATA_FORMAT (2, 1)) { \
1007 darwin_non_lazy_pcrel (ASM_OUT_FILE, ADDR); \
1008 goto DONE; \
1009 }
1010
1011 /* Experimentally, putting jump tables in text is faster on SPEC.
1012 Also this is needed for correctness for coalesced functions. */
1013
1014 #ifndef JUMP_TABLES_IN_TEXT_SECTION
1015 #define JUMP_TABLES_IN_TEXT_SECTION 1
1016 #endif
1017
1018 #define TARGET_TERMINATE_DW2_EH_FRAME_INFO false
1019
1020 #undef TARGET_ASM_NAMED_SECTION
1021 #define TARGET_ASM_NAMED_SECTION darwin_asm_named_section
1022
1023 #define DARWIN_REGISTER_TARGET_PRAGMAS() \
1024 do { \
1025 c_register_pragma (0, "mark", darwin_pragma_ignore); \
1026 c_register_pragma (0, "options", darwin_pragma_options); \
1027 c_register_pragma (0, "segment", darwin_pragma_ignore); \
1028 c_register_pragma (0, "unused", darwin_pragma_unused); \
1029 } while (0)
1030
1031 #undef ASM_APP_ON
1032 #define ASM_APP_ON ""
1033 #undef ASM_APP_OFF
1034 #define ASM_APP_OFF ""
1035
1036 void darwin_register_frameworks (const char *, const char *, int);
1037 void darwin_register_objc_includes (const char *, const char *, int);
1038 #define TARGET_EXTRA_PRE_INCLUDES darwin_register_objc_includes
1039 #define TARGET_EXTRA_INCLUDES darwin_register_frameworks
1040
1041 void add_framework_path (char *);
1042 #define TARGET_OPTF add_framework_path
1043
1044 #define TARGET_HAS_F_SETLKW
1045
1046 /* Darwin before 7.0 does not have C99 functions. */
1047 #ifndef TARGET_C99_FUNCTIONS
1048 #define TARGET_C99_FUNCTIONS 0
1049 #endif
1050
1051 #define WINT_TYPE "int"
1052
1053 #endif /* CONFIG_DARWIN_H */
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