1 /* Target definitions for Darwin (Mac OS X) systems.
2 Copyright (C) 1989, 1990, 1991, 1992, 1993, 2000, 2001, 2002, 2003
3 Free Software Foundation, Inc.
4 Contributed by Apple Computer Inc.
6 This file is part of GCC.
8 GCC is free software; you can redistribute it and/or modify
9 it under the terms of the GNU General Public License as published by
10 the Free Software Foundation; either version 2, or (at your option)
13 GCC is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
18 You should have received a copy of the GNU General Public License
19 along with GCC; see the file COPYING. If not, write to
20 the Free Software Foundation, 59 Temple Place - Suite 330,
21 Boston, MA 02111-1307, USA. */
23 /* The definitions in this file are common to all processor types
24 running Darwin, which is the kernel for Mac OS X. Darwin is
25 basically a BSD user layer laid over a Mach kernel, then evolved
26 for many years (at NeXT) in parallel with other Unix systems. So
27 while the runtime is a somewhat idiosyncratic Mach-based thing,
28 other definitions look like they would for a BSD variant. */
30 /* Although NeXT ran on many different architectures, as of Jan 2001
31 the only supported Darwin targets are PowerPC and x86. */
33 /* Technically, STANDARD_EXEC_PREFIX should be /usr/libexec/, but in
34 practice this makes it hard to install new compilers elsewhere, so
35 leave it undefined and expect system builders to set configure args
38 /* One of Darwin's NeXT legacies is the Mach-O format, which is partly
39 like a.out and partly like COFF, with additional features like
40 multi-architecture binary support. */
42 #define OBJECT_FORMAT_MACHO
44 /* Suppress g++ attempt to link in the math library automatically.
45 (Some Darwin versions have a libm, but they seem to cause problems
46 for C++ executables.) */
48 #define MATH_LIBRARY ""
54 /* Define an empty body for the function do_global_dtors() in libgcc2.c. */
56 #define DO_GLOBAL_DTORS_BODY
58 /* The string value for __SIZE_TYPE__. */
61 #define SIZE_TYPE "long unsigned int"
64 /* Type used for ptrdiff_t, as a string used in a declaration. */
67 #define PTRDIFF_TYPE "int"
72 #define WCHAR_TYPE "int"
73 #undef WCHAR_TYPE_SIZE
74 #define WCHAR_TYPE_SIZE 32
76 /* Default to using the NeXT-style runtime, since that's what is
77 pre-installed on Darwin systems. */
79 #define NEXT_OBJC_RUNTIME
81 /* Don't default to pcc-struct-return, because gcc is the only compiler, and
82 we want to retain compatibility with older gcc versions. */
84 #undef DEFAULT_PCC_STRUCT_RETURN
85 #define DEFAULT_PCC_STRUCT_RETURN 0
87 /* This table intercepts weirdo options whose names would interfere
88 with normal driver conventions, and either translates them into
89 standardly-named options, or adds a 'Z' so that they can get to
90 specs processing without interference.
92 Do not expand a linker option to "-Xlinker -<option>", since that
93 forfeits the ability to control via spec strings later. However,
94 as a special exception, do this translation with -filelist, because
95 otherwise the driver will think there are no input files and quit.
96 (The alternative would be to hack the driver to recognize -filelist
97 specially, but it's simpler to use the translation table.)
99 Note that an option name with a prefix that matches another option
100 name, that also takes an argument, needs to be modified so the
101 prefix is different, otherwise a '*' after the shorter option will
102 match with the longer one. */
103 #define TARGET_OPTION_TRANSLATE_TABLE \
104 { "-all_load", "-Zall_load" }, \
105 { "-allowable_client", "-Zallowable_client" }, \
106 { "-arch_errors_fatal", "-Zarch_errors_fatal" }, \
107 { "-bind_at_load", "-Zbind_at_load" }, \
108 { "-bundle", "-Zbundle" }, \
109 { "-bundle_loader", "-Zbundle_loader" }, \
110 { "-weak_reference_mismatches", "-Zweak_reference_mismatches" }, \
111 { "-dependency-file", "-MF" }, \
112 { "-dylib_file", "-Zdylib_file" }, \
113 { "-dynamic", "-Zdynamic" }, \
114 { "-dynamiclib", "-Zdynamiclib" }, \
115 { "-exported_symbols_list", "-Zexported_symbols_list" }, \
116 { "-seg_addr_table_filename", "-Zseg_addr_table_filename" }, \
117 { "-filelist", "-Xlinker -filelist -Xlinker" }, \
118 { "-flat_namespace", "-Zflat_namespace" }, \
119 { "-force_cpusubtype_ALL", "-Zforce_cpusubtype_ALL" }, \
120 { "-force_flat_namespace", "-Zforce_flat_namespace" }, \
121 { "-image_base", "-Zimage_base" }, \
122 { "-init", "-Zinit" }, \
123 { "-install_name", "-Zinstall_name" }, \
124 { "-multiply_defined_unused", "-Zmultiplydefinedunused" }, \
125 { "-multiply_defined", "-Zmultiply_defined" }, \
126 { "-multi_module", "-Zmulti_module" }, \
127 { "-static", "-static -Wa,-static" }, \
128 { "-single_module", "-Zsingle_module" }, \
129 { "-unexported_symbols_list", "-Zunexported_symbols_list" }
131 /* These compiler options take n arguments. */
133 #undef WORD_SWITCH_TAKES_ARG
134 #define WORD_SWITCH_TAKES_ARG(STR) \
135 (DEFAULT_WORD_SWITCH_TAKES_ARG (STR) ? 1 : \
136 !strcmp (STR, "Zallowable_client") ? 1 : \
137 !strcmp (STR, "arch") ? 1 : \
138 !strcmp (STR, "arch_only") ? 1 : \
139 !strcmp (STR, "Zbundle_loader") ? 1 : \
140 !strcmp (STR, "client_name") ? 1 : \
141 !strcmp (STR, "compatibility_version") ? 1 : \
142 !strcmp (STR, "current_version") ? 1 : \
143 !strcmp (STR, "Zdylib_file") ? 1 : \
144 !strcmp (STR, "Zexported_symbols_list") ? 1 : \
145 !strcmp (STR, "Zimage_base") ? 1 : \
146 !strcmp (STR, "Zinit") ? 1 : \
147 !strcmp (STR, "Zinstall_name") ? 1 : \
148 !strcmp (STR, "Zmultiplydefinedunused") ? 1 : \
149 !strcmp (STR, "Zmultiply_defined") ? 1 : \
150 !strcmp (STR, "precomp-trustfile") ? 1 : \
151 !strcmp (STR, "read_only_relocs") ? 1 : \
152 !strcmp (STR, "sectcreate") ? 3 : \
153 !strcmp (STR, "sectorder") ? 3 : \
154 !strcmp (STR, "Zseg_addr_table_filename") ?1 :\
155 !strcmp (STR, "seg1addr") ? 1 : \
156 !strcmp (STR, "segprot") ? 3 : \
157 !strcmp (STR, "seg_addr_table") ? 1 : \
158 !strcmp (STR, "sub_library") ? 1 : \
159 !strcmp (STR, "sub_umbrella") ? 1 : \
160 !strcmp (STR, "umbrella") ? 1 : \
161 !strcmp (STR, "undefined") ? 1 : \
162 !strcmp (STR, "Zunexported_symbols_list") ? 1 : \
163 !strcmp (STR, "Zweak_reference_mismatches") ? 1 : \
164 !strcmp (STR, "pagezero_size") ? 1 : \
165 !strcmp (STR, "segs_read_only_addr") ? 1 : \
166 !strcmp (STR, "segs_read_write_addr") ? 1 : \
167 !strcmp (STR, "sectalign") ? 3 : \
168 !strcmp (STR, "sectobjectsymbols") ? 2 : \
169 !strcmp (STR, "segcreate") ? 3 : \
170 !strcmp (STR, "dylinker_install_name") ? 1 : \
173 /* Machine dependent cpp options. */
176 #define CPP_SPEC "%{static:%{!dynamic:-D__STATIC__}}%{!static:-D__DYNAMIC__}"
178 /* This is mostly a clone of the standard LINK_COMMAND_SPEC, plus
179 precomp, libtool, and fat build additions. Also we
180 don't specify a second %G after %L because libSystem is
181 self-contained and doesn't need to link against libgcc.a. */
182 /* In general, random Darwin linker flags should go into LINK_SPEC
183 instead of LINK_COMMAND_SPEC. The command spec is better for
184 specifying the handling of options understood by generic Unix
185 linkers, and for positional arguments like libraries. */
186 #define LINK_COMMAND_SPEC "\
187 %{!fdump=*:%{!fsyntax-only:%{!precomp:%{!c:%{!M:%{!MM:%{!E:%{!S:\
188 %{!Zdynamiclib:%(linker)}%{Zdynamiclib:/usr/bin/libtool} \
189 %{!Zdynamiclib:-arch %(darwin_arch)} \
190 %{Zdynamiclib:-arch_only %(darwin_arch)} \
191 %l %X %{d} %{s} %{t} %{Z} \
192 %{!Zdynamiclib:%{A} %{e*} %{m} %{N} %{n} %{r} %{u*} %{x} %{z}} \
193 %{@:-o %f%u.out}%{!@:%{o*}%{!o:-o a.out}} \
194 %{!Zdynamiclib:%{!A:%{!nostdlib:%{!nostartfiles:%S}}}} \
195 %{L*} %(link_libgcc) %o %{fprofile-arcs|fprofile-generate:-lgcov} \
196 %{!nostdlib:%{!nodefaultlibs:%G %L}} \
197 %{!A:%{!nostdlib:%{!nostartfiles:%E}}} %{T*} %{F*} \
198 %{!--help:%{!no-c++filt|c++filt:| c++filt3 }} }}}}}}}}"
200 /* Please keep the random linker options in alphabetical order (modulo
201 'Z' and 'no' prefixes). Options that can only go to one of libtool
202 or ld must be listed twice, under both !Zdynamiclib and
203 Zdynamiclib, with one of the cases reporting an error. */
204 /* Note that options taking arguments may appear multiple times on a
205 command line with different arguments each time, so put a * after
206 their names so all of them get passed. */
208 "%{static}%{!static:-dynamic} \
211 %{Zbundle_loader*:-bundle_loader %*} \
213 %{compatibility_version*:%e-compatibility_version only allowed with -dynamiclib\
215 %{current_version*:%e-current_version only allowed with -dynamiclib} \
216 %{Zforce_cpusubtype_ALL:-force_cpusubtype_ALL} \
217 %{Zforce_flat_namespace:-force_flat_namespace} \
218 %{Zinstall_name*:%e-install_name only allowed with -dynamiclib} \
219 %{keep_private_externs} \
223 %{Zbundle:%e-bundle not allowed with -dynamiclib} \
224 %{Zbundle_loader*:%e-bundle_loader not allowed with -dynamiclib} \
225 %{client_name*:%e-client_name not allowed with -dynamiclib} \
226 %{compatibility_version*} \
227 %{current_version*} \
228 %{Zforce_cpusubtype_ALL:%e-force_cpusubtype_ALL not allowed with -dynamiclib} \
229 %{Zforce_flat_namespace:%e-force_flat_namespace not allowed with -dynamiclib} \
230 %{Zinstall_name*:-install_name %*} \
231 %{keep_private_externs:%e-keep_private_externs not allowed with -dynamiclib} \
232 %{private_bundle:%e-private_bundle not allowed with -dynamiclib} \
234 %{Zall_load:-all_load}%{Zdynamiclib:%{!Zall_load:-noall_load}} \
235 %{Zallowable_client*:-allowable_client %*} \
236 %{Zbind_at_load:-bind_at_load} \
237 %{Zarch_errors_fatal:-arch_errors_fatal} \
238 %{Zdylib_file*:-dylib_file %*} \
239 %{Zdynamic:-dynamic}\
240 %{Zexported_symbols_list*:-exported_symbols_list %*} \
241 %{Zflat_namespace:-flat_namespace} \
242 %{headerpad_max_install_names*} \
243 %{Zimage_base*:-image_base %*} \
246 %{Zmulti_module:-multi_module} %{Zsingle_module:-single_module} \
247 %{Zmultiply_defined*:-multiply_defined %*} \
248 %{Zmultiplydefinedunused*:-multiply_defined_unused %*} \
249 %{prebind} %{noprebind} %{nofixprebinding} %{prebind_all_twolevel_modules} \
250 %{read_only_relocs} \
251 %{sectcreate*} %{sectorder*} %{seg1addr*} %{segprot*} %{seg_addr_table*} \
252 %{Zseg_addr_table_filename*:-seg_addr_table_filename %*} \
253 %{sub_library*} %{sub_umbrella*} \
254 %{twolevel_namespace} %{twolevel_namespace_hints} \
257 %{Zunexported_symbols_list*:-unexported_symbols_list %*} \
258 %{Zweak_reference_mismatches*:-weak_reference_mismatches %*} \
262 %{pagezero_size*} %{segs_read_*} %{seglinkedit} %{noseglinkedit} \
263 %{sectalign*} %{sectobjectsymbols*} %{segcreate*} %{whyload} \
264 %{whatsloaded} %{dylinker_install_name*} \
265 %{dylinker} %{Mach} "
268 /* Machine dependent libraries. */
271 #define LIB_SPEC "%{!static:-lSystem}"
273 /* We specify crt0.o as -lcrt0.o so that ld will search the library path. */
275 #undef STARTFILE_SPEC
276 #define STARTFILE_SPEC \
277 "%{!Zdynamiclib:%{Zbundle:%{!static:-lbundle1.o}} \
278 %{!Zbundle:%{pg:%{static:-lgcrt0.o} \
279 %{!static:%{object:-lgcrt0.o} \
280 %{!object:%{preload:-lgcrt0.o} \
281 %{!preload:-lgcrt1.o -lcrt2.o}}}} \
282 %{!pg:%{static:-lcrt0.o} \
283 %{!static:%{object:-lcrt0.o} \
284 %{!object:%{preload:-lcrt0.o} \
285 %{!preload:-lcrt1.o -lcrt2.o}}}}}}"
287 /* The native Darwin linker doesn't necessarily place files in the order
288 that they're specified on the link line. Thus, it is pointless
289 to put anything in ENDFILE_SPEC. */
290 /* #define ENDFILE_SPEC "" */
292 /* We use Dbx symbol format. */
294 #define DBX_DEBUGGING_INFO 1
296 /* When generating stabs debugging, use N_BINCL entries. */
298 #define DBX_USE_BINCL
300 /* There is no limit to the length of stabs strings. */
302 #define DBX_CONTIN_LENGTH 0
304 /* gdb needs a null N_SO at the end of each file for scattered loading. */
306 #undef DBX_OUTPUT_MAIN_SOURCE_FILE_END
307 #define DBX_OUTPUT_MAIN_SOURCE_FILE_END(FILE, FILENAME) \
308 do { text_section (); \
310 "\t.stabs \"%s\",%d,0,0,Letext\nLetext:\n", "" , N_SO); \
313 /* Our profiling scheme doesn't LP labels and counter words. */
315 #define NO_PROFILE_COUNTERS 1
317 #undef INIT_SECTION_ASM_OP
318 #define INIT_SECTION_ASM_OP
322 #define TARGET_ASM_CONSTRUCTOR machopic_asm_out_constructor
323 #define TARGET_ASM_DESTRUCTOR machopic_asm_out_destructor
325 /* Always prefix with an underscore. */
327 #define USER_LABEL_PREFIX "_"
329 /* Don't output a .file directive. That is only used by the assembler for
331 #undef TARGET_ASM_FILE_START_FILE_DIRECTIVE
332 #define TARGET_ASM_FILE_START_FILE_DIRECTIVE false
334 #undef TARGET_ASM_FILE_END
335 #define TARGET_ASM_FILE_END darwin_file_end
337 #define ASM_OUTPUT_SKIP(FILE,SIZE) \
338 fprintf (FILE, "\t.space "HOST_WIDE_INT_PRINT_UNSIGNED"\n", SIZE)
340 /* Give ObjC methods pretty symbol names. */
342 #undef OBJC_GEN_METHOD_LABEL
343 #define OBJC_GEN_METHOD_LABEL(BUF,IS_INST,CLASS_NAME,CAT_NAME,SEL_NAME,NUM) \
345 sprintf (BUF, "%c[%s(%s) %s]", (IS_INST) ? '-' : '+', \
346 (CLASS_NAME), (CAT_NAME), (SEL_NAME)); \
348 sprintf (BUF, "%c[%s %s]", (IS_INST) ? '-' : '+', \
349 (CLASS_NAME), (SEL_NAME)); \
352 /* The RTTI data (e.g., __ti4name) is common and public (and static),
353 but it does need to be referenced via indirect PIC data pointers.
354 The machopic_define_name calls are telling the machopic subsystem
355 that the name *is* defined in this module, so it doesn't need to
356 make them indirect. */
358 #undef ASM_DECLARE_OBJECT_NAME
359 #define ASM_DECLARE_OBJECT_NAME(FILE, NAME, DECL) \
361 const char *xname = NAME; \
362 if (GET_CODE (XEXP (DECL_RTL (DECL), 0)) != SYMBOL_REF) \
363 xname = IDENTIFIER_POINTER (DECL_NAME (DECL)); \
364 if ((TREE_STATIC (DECL) \
365 && (!DECL_COMMON (DECL) || !TREE_PUBLIC (DECL))) \
366 || DECL_INITIAL (DECL)) \
367 machopic_define_name (xname); \
368 if ((TREE_STATIC (DECL) \
369 && (!DECL_COMMON (DECL) || !TREE_PUBLIC (DECL))) \
370 || DECL_INITIAL (DECL)) \
371 (* targetm.encode_section_info) (DECL, DECL_RTL (DECL), false); \
372 ASM_OUTPUT_LABEL (FILE, xname); \
373 /* Darwin doesn't support zero-size objects, so give them a \
375 if (tree_low_cst (DECL_SIZE_UNIT (DECL), 1) == 0) \
376 assemble_zeros (1); \
379 #define ASM_DECLARE_FUNCTION_NAME(FILE, NAME, DECL) \
381 const char *xname = NAME; \
382 if (GET_CODE (XEXP (DECL_RTL (DECL), 0)) != SYMBOL_REF) \
383 xname = IDENTIFIER_POINTER (DECL_NAME (DECL)); \
384 if ((TREE_STATIC (DECL) \
385 && (!DECL_COMMON (DECL) || !TREE_PUBLIC (DECL))) \
386 || DECL_INITIAL (DECL)) \
387 machopic_define_name (xname); \
388 if ((TREE_STATIC (DECL) \
389 && (!DECL_COMMON (DECL) || !TREE_PUBLIC (DECL))) \
390 || DECL_INITIAL (DECL)) \
391 (* targetm.encode_section_info) (DECL, DECL_RTL (DECL), false); \
392 ASM_OUTPUT_LABEL (FILE, xname); \
393 /* Avoid generating stubs for functions we've just defined by \
394 outputting any required stub name label now. */ \
395 machopic_output_possible_stub_label (FILE, xname); \
398 #define ASM_DECLARE_CONSTANT_NAME(FILE, NAME, EXP, SIZE) \
400 ASM_OUTPUT_LABEL (FILE, NAME); \
401 /* Darwin doesn't support zero-size objects, so give them a \
404 assemble_zeros (1); \
407 /* Wrap new method names in quotes so the assembler doesn't gag.
408 Make Objective-C internal symbols local. */
410 #undef ASM_OUTPUT_LABELREF
411 #define ASM_OUTPUT_LABELREF(FILE,NAME) \
413 const char *xname = darwin_strip_name_encoding (NAME); \
414 if (! strcmp (xname, "<pic base>")) \
415 machopic_output_function_base_name(FILE); \
416 else if (xname[0] == '&' || xname[0] == '*') \
418 int len = strlen (xname); \
419 if (len > 6 && !strcmp ("$stub", xname + len - 5)) \
420 machopic_validate_stub_or_non_lazy_ptr (xname, 1); \
421 else if (len > 7 && !strcmp ("$stub\"", xname + len - 6)) \
422 machopic_validate_stub_or_non_lazy_ptr (xname, 1); \
423 else if (len > 14 && !strcmp ("$non_lazy_ptr", xname + len - 13)) \
424 machopic_validate_stub_or_non_lazy_ptr (xname, 0); \
425 fputs (&xname[1], FILE); \
427 else if (xname[0] == '+' || xname[0] == '-') \
428 fprintf (FILE, "\"%s\"", xname); \
429 else if (!strncmp (xname, "_OBJC_", 6)) \
430 fprintf (FILE, "L%s", xname); \
431 else if (!strncmp (xname, ".objc_class_name_", 17)) \
432 fprintf (FILE, "%s", xname); \
434 fprintf (FILE, "_%s", xname); \
437 /* Output before executable code. */
438 #undef TEXT_SECTION_ASM_OP
439 #define TEXT_SECTION_ASM_OP ".text"
441 /* Output before writable data. */
443 #undef DATA_SECTION_ASM_OP
444 #define DATA_SECTION_ASM_OP ".data"
447 #define ALIGN_ASM_OP ".align"
449 #undef ASM_OUTPUT_ALIGN
450 #define ASM_OUTPUT_ALIGN(FILE,LOG) \
452 fprintf (FILE, "\t%s %d\n", ALIGN_ASM_OP, (LOG))
454 /* Ensure correct alignment of bss data. */
456 #undef ASM_OUTPUT_ALIGNED_DECL_LOCAL
457 #define ASM_OUTPUT_ALIGNED_DECL_LOCAL(FILE, DECL, NAME, SIZE, ALIGN) \
459 fputs (".lcomm ", (FILE)); \
460 assemble_name ((FILE), (NAME)); \
461 fprintf ((FILE), ","HOST_WIDE_INT_PRINT_UNSIGNED",%u\n", (SIZE), \
462 floor_log2 ((ALIGN) / BITS_PER_UNIT)); \
463 if ((DECL) && ((TREE_STATIC (DECL) \
464 && (!DECL_COMMON (DECL) || !TREE_PUBLIC (DECL))) \
465 || DECL_INITIAL (DECL))) \
466 (* targetm.encode_section_info) (DECL, DECL_RTL (DECL), false); \
467 if ((DECL) && ((TREE_STATIC (DECL) \
468 && (!DECL_COMMON (DECL) || !TREE_PUBLIC (DECL))) \
469 || DECL_INITIAL (DECL))) \
470 machopic_define_name (NAME); \
473 /* The maximum alignment which the object file format can support.
474 For Mach-O, this is 2^15. */
476 #undef MAX_OFILE_ALIGNMENT
477 #define MAX_OFILE_ALIGNMENT 0x8000
479 /* Create new Mach-O sections. */
481 #undef SECTION_FUNCTION
482 #define SECTION_FUNCTION(FUNCTION, SECTION, DIRECTIVE, OBJC) \
483 extern void FUNCTION (void); \
487 if (in_section != SECTION) \
490 objc_section_init (); \
493 fprintf (asm_out_file, "%s\n", DIRECTIVE); \
494 in_section = SECTION; \
498 /* Darwin uses many types of special sections. */
500 #undef EXTRA_SECTIONS
501 #define EXTRA_SECTIONS \
502 in_const, in_const_data, in_cstring, in_literal4, in_literal8, \
503 in_constructor, in_destructor, in_mod_init, in_mod_term, \
504 in_objc_class, in_objc_meta_class, in_objc_category, \
505 in_objc_class_vars, in_objc_instance_vars, \
506 in_objc_cls_meth, in_objc_inst_meth, \
507 in_objc_cat_cls_meth, in_objc_cat_inst_meth, \
508 in_objc_selector_refs, \
509 in_objc_selector_fixup, \
510 in_objc_symbols, in_objc_module_info, \
511 in_objc_protocol, in_objc_string_object, \
512 in_objc_constant_string_object, \
513 in_objc_image_info, \
514 in_objc_class_names, in_objc_meth_var_names, \
515 in_objc_meth_var_types, in_objc_cls_refs, \
516 in_machopic_nl_symbol_ptr, \
517 in_machopic_lazy_symbol_ptr, \
518 in_machopic_symbol_stub, \
519 in_machopic_symbol_stub1, \
520 in_machopic_picsymbol_stub, \
521 in_machopic_picsymbol_stub1, \
522 in_darwin_exception, in_darwin_eh_frame, \
525 #undef EXTRA_SECTION_FUNCTIONS
526 #define EXTRA_SECTION_FUNCTIONS \
527 static void objc_section_init (void); \
528 SECTION_FUNCTION (const_section, \
531 SECTION_FUNCTION (const_data_section, \
534 SECTION_FUNCTION (cstring_section, \
537 SECTION_FUNCTION (literal4_section, \
540 SECTION_FUNCTION (literal8_section, \
543 SECTION_FUNCTION (constructor_section, \
546 SECTION_FUNCTION (mod_init_section, \
548 ".mod_init_func", 0) \
549 SECTION_FUNCTION (mod_term_section, \
551 ".mod_term_func", 0) \
552 SECTION_FUNCTION (destructor_section, \
555 SECTION_FUNCTION (objc_class_section, \
558 SECTION_FUNCTION (objc_meta_class_section, \
559 in_objc_meta_class, \
560 ".objc_meta_class", 1) \
561 SECTION_FUNCTION (objc_category_section, \
563 ".objc_category", 1) \
564 SECTION_FUNCTION (objc_class_vars_section, \
565 in_objc_class_vars, \
566 ".objc_class_vars", 1) \
567 SECTION_FUNCTION (objc_instance_vars_section, \
568 in_objc_instance_vars, \
569 ".objc_instance_vars", 1) \
570 SECTION_FUNCTION (objc_cls_meth_section, \
572 ".objc_cls_meth", 1) \
573 SECTION_FUNCTION (objc_inst_meth_section, \
575 ".objc_inst_meth", 1) \
576 SECTION_FUNCTION (objc_cat_cls_meth_section, \
577 in_objc_cat_cls_meth, \
578 ".objc_cat_cls_meth", 1) \
579 SECTION_FUNCTION (objc_cat_inst_meth_section, \
580 in_objc_cat_inst_meth, \
581 ".objc_cat_inst_meth", 1) \
582 SECTION_FUNCTION (objc_selector_refs_section, \
583 in_objc_selector_refs, \
584 ".objc_message_refs", 1) \
585 SECTION_FUNCTION (objc_selector_fixup_section, \
586 in_objc_selector_fixup, \
587 ".section __OBJC, __sel_fixup", 1) \
588 SECTION_FUNCTION (objc_symbols_section, \
590 ".objc_symbols", 1) \
591 SECTION_FUNCTION (objc_module_info_section, \
592 in_objc_module_info, \
593 ".objc_module_info", 1) \
594 SECTION_FUNCTION (objc_protocol_section, \
596 ".objc_protocol", 1) \
597 SECTION_FUNCTION (objc_string_object_section, \
598 in_objc_string_object, \
599 ".objc_string_object", 1) \
600 SECTION_FUNCTION (objc_constant_string_object_section, \
601 in_objc_constant_string_object, \
602 ".section __OBJC, __cstring_object", 1) \
603 /* Fix-and-Continue image marker. */ \
604 SECTION_FUNCTION (objc_image_info_section, \
605 in_objc_image_info, \
606 ".section __OBJC, __image_info", 1) \
607 SECTION_FUNCTION (objc_class_names_section, \
608 in_objc_class_names, \
609 ".objc_class_names", 1) \
610 SECTION_FUNCTION (objc_meth_var_names_section, \
611 in_objc_meth_var_names, \
612 ".objc_meth_var_names", 1) \
613 SECTION_FUNCTION (objc_meth_var_types_section, \
614 in_objc_meth_var_types, \
615 ".objc_meth_var_types", 1) \
616 SECTION_FUNCTION (objc_cls_refs_section, \
618 ".objc_cls_refs", 1) \
620 SECTION_FUNCTION (machopic_lazy_symbol_ptr_section, \
621 in_machopic_lazy_symbol_ptr, \
622 ".lazy_symbol_pointer", 0) \
623 SECTION_FUNCTION (machopic_nl_symbol_ptr_section, \
624 in_machopic_nl_symbol_ptr, \
625 ".non_lazy_symbol_pointer", 0) \
626 SECTION_FUNCTION (machopic_symbol_stub_section, \
627 in_machopic_symbol_stub, \
629 SECTION_FUNCTION (machopic_symbol_stub1_section, \
630 in_machopic_symbol_stub1, \
631 ".section __TEXT,__symbol_stub1,symbol_stubs,pure_instructions,16", 0)\
632 SECTION_FUNCTION (machopic_picsymbol_stub_section, \
633 in_machopic_picsymbol_stub, \
634 ".picsymbol_stub", 0) \
635 SECTION_FUNCTION (machopic_picsymbol_stub1_section, \
636 in_machopic_picsymbol_stub1, \
637 ".section __TEXT,__picsymbolstub1,symbol_stubs,pure_instructions,32", 0)\
638 SECTION_FUNCTION (darwin_exception_section, \
639 in_darwin_exception, \
640 ".section __DATA,__gcc_except_tab", 0) \
641 SECTION_FUNCTION (darwin_eh_frame_section, \
642 in_darwin_eh_frame, \
643 ".section __TEXT,__eh_frame", 0) \
646 objc_section_init (void) \
648 static int been_here = 0; \
650 if (been_here == 0) \
653 /* written, cold -> hot */ \
654 objc_cat_cls_meth_section (); \
655 objc_cat_inst_meth_section (); \
656 objc_string_object_section (); \
657 objc_constant_string_object_section (); \
658 objc_selector_refs_section (); \
659 objc_selector_fixup_section (); \
660 objc_cls_refs_section (); \
661 objc_class_section (); \
662 objc_meta_class_section (); \
663 /* shared, hot -> cold */ \
664 objc_cls_meth_section (); \
665 objc_inst_meth_section (); \
666 objc_protocol_section (); \
667 objc_class_names_section (); \
668 objc_meth_var_types_section (); \
669 objc_meth_var_names_section (); \
670 objc_category_section (); \
671 objc_class_vars_section (); \
672 objc_instance_vars_section (); \
673 objc_module_info_section (); \
674 objc_symbols_section (); \
678 #define READONLY_DATA_SECTION const_section
680 #undef TARGET_ASM_SELECT_SECTION
681 #define TARGET_ASM_SELECT_SECTION machopic_select_section
682 #undef TARGET_ASM_SELECT_RTX_SECTION
683 #define TARGET_ASM_SELECT_RTX_SECTION machopic_select_rtx_section
685 #define ASM_DECLARE_UNRESOLVED_REFERENCE(FILE,NAME) \
688 if (MACHOPIC_INDIRECT) \
689 fprintf (FILE, "\t.lazy_reference "); \
691 fprintf (FILE, "\t.reference "); \
692 assemble_name (FILE, NAME); \
693 fprintf (FILE, "\n"); \
697 #define ASM_DECLARE_CLASS_REFERENCE(FILE,NAME) \
700 fprintf (FILE, "\t"); \
701 assemble_name (FILE, NAME); \
702 fprintf (FILE, "=0\n"); \
703 (*targetm.asm_out.globalize_label) (FILE, NAME); \
707 /* Globalizing directive for a label. */
708 #define GLOBAL_ASM_OP ".globl "
709 #define TARGET_ASM_GLOBALIZE_LABEL darwin_globalize_label
711 /* Emit an assembler directive to set visibility for a symbol. Used
712 to support visibility attribute and Darwin's private extern
714 #undef TARGET_ASM_ASSEMBLE_VISIBILITY
715 #define TARGET_ASM_ASSEMBLE_VISIBILITY darwin_assemble_visibility
718 #undef ASM_GENERATE_INTERNAL_LABEL
719 #define ASM_GENERATE_INTERNAL_LABEL(LABEL,PREFIX,NUM) \
720 sprintf (LABEL, "*%s%ld", PREFIX, (long)(NUM))
722 /* Since we have a separate readonly data section, define this so that
723 jump tables end up in text rather than data. */
725 #ifndef JUMP_TABLES_IN_TEXT_SECTION
726 #define JUMP_TABLES_IN_TEXT_SECTION 1
729 /* Symbolic names for various things we might know about a symbol. */
731 enum machopic_addr_class
{
733 MACHOPIC_DEFINED_DATA
,
734 MACHOPIC_UNDEFINED_DATA
,
735 MACHOPIC_DEFINED_FUNCTION
,
736 MACHOPIC_UNDEFINED_FUNCTION
739 /* Macros defining the various PIC cases. */
741 #define MACHO_DYNAMIC_NO_PIC_P (TARGET_DYNAMIC_NO_PIC)
742 #define MACHOPIC_INDIRECT (flag_pic || MACHO_DYNAMIC_NO_PIC_P)
743 #define MACHOPIC_JUST_INDIRECT (flag_pic == 1 || MACHO_DYNAMIC_NO_PIC_P)
744 #define MACHOPIC_PURE (flag_pic == 2 && ! MACHO_DYNAMIC_NO_PIC_P)
746 #undef TARGET_ENCODE_SECTION_INFO
747 #define TARGET_ENCODE_SECTION_INFO darwin_encode_section_info
748 #undef TARGET_STRIP_NAME_ENCODING
749 #define TARGET_STRIP_NAME_ENCODING darwin_strip_name_encoding
751 #define GEN_BINDER_NAME_FOR_STUB(BUF,STUB,STUB_LENGTH) \
753 const char *const stub_ = (STUB); \
754 char *buffer_ = (BUF); \
755 strcpy (buffer_, stub_); \
756 if (stub_[0] == '"') \
758 strcpy (buffer_ + (STUB_LENGTH) - 1, "_binder\""); \
762 strcpy (buffer_ + (STUB_LENGTH), "_binder"); \
766 #define GEN_SYMBOL_NAME_FOR_SYMBOL(BUF,SYMBOL,SYMBOL_LENGTH) \
768 const char *const symbol_ = (SYMBOL); \
769 char *buffer_ = (BUF); \
770 if (name_needs_quotes (symbol_) && symbol_[0] != '"') \
772 sprintf (buffer_, "\"%s\"", symbol_); \
776 strcpy (buffer_, symbol_); \
780 /* Given a symbol name string, create the lazy pointer version
781 of the symbol name. */
783 #define GEN_LAZY_PTR_NAME_FOR_SYMBOL(BUF,SYMBOL,SYMBOL_LENGTH) \
785 const char *symbol_ = darwin_strip_name_encoding (SYMBOL); \
786 char *buffer_ = (BUF); \
787 if (symbol_[0] == '"') \
789 strcpy (buffer_, "\"L"); \
790 strcpy (buffer_ + 2, symbol_ + 1); \
791 strcpy (buffer_ + (SYMBOL_LENGTH), "$lazy_ptr\""); \
793 else if (name_needs_quotes (symbol_)) \
795 strcpy (buffer_, "\"L"); \
796 strcpy (buffer_ + 2, symbol_); \
797 strcpy (buffer_ + (SYMBOL_LENGTH) + 2, "$lazy_ptr\""); \
801 strcpy (buffer_, "L"); \
802 strcpy (buffer_ + 1, symbol_); \
803 strcpy (buffer_ + (SYMBOL_LENGTH) + 1, "$lazy_ptr"); \
807 #define TARGET_ASM_EXCEPTION_SECTION darwin_exception_section
809 #define TARGET_ASM_EH_FRAME_SECTION darwin_eh_frame_section
811 #undef ASM_PREFERRED_EH_DATA_FORMAT
812 #define ASM_PREFERRED_EH_DATA_FORMAT(CODE,GLOBAL) \
813 (((CODE) == 2 && (GLOBAL) == 1) \
814 ? (DW_EH_PE_pcrel | DW_EH_PE_indirect) : \
815 ((CODE) == 1 || (GLOBAL) == 0) ? DW_EH_PE_pcrel : DW_EH_PE_absptr)
817 #define ASM_OUTPUT_DWARF_DELTA(FILE,SIZE,LABEL1,LABEL2) \
818 darwin_asm_output_dwarf_delta (FILE, SIZE, LABEL1, LABEL2)
820 #define TARGET_TERMINATE_DW2_EH_FRAME_INFO false
822 #define DARWIN_REGISTER_TARGET_PRAGMAS() \
824 c_register_pragma (0, "mark", darwin_pragma_ignore); \
825 c_register_pragma (0, "options", darwin_pragma_options); \
826 c_register_pragma (0, "segment", darwin_pragma_ignore); \
827 c_register_pragma (0, "unused", darwin_pragma_unused); \
831 #define ASM_APP_ON ""
833 #define ASM_APP_OFF ""