1 /* Target definitions for Darwin (Mac OS X) systems.
2 Copyright (C) 1989, 1990, 1991, 1992, 1993, 2000, 2001, 2002
3 Free Software Foundation, Inc.
4 Contributed by Apple Computer Inc.
6 This file is part of GNU CC.
8 GNU CC 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 GNU CC 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 GNU CC; 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 %l %X %{d} %{s} %{t} %{Z} \
190 %{!Zdynamiclib:%{A} %{e*} %{m} %{N} %{n} %{r} %{u*} %{x} %{z}} \
191 %{@:-o %f%u.out}%{!@:%{o*}%{!o:-o a.out}} \
192 %{!Zdynamiclib:%{!A:%{!nostdlib:%{!nostartfiles:%S}}}} \
193 %{L*} %(link_libgcc) %o %{!nostdlib:%{!nodefaultlibs:%G %L}} \
194 %{!A:%{!nostdlib:%{!nostartfiles:%E}}} %{T*} %{F*} \
195 %{!--help:%{!no-c++filt|c++filt:| c++filt3 }} }}}}}}}}"
197 /* Please keep the random linker options in alphabetical order (modulo
198 'Z' and 'no' prefixes). Options that can only go to one of libtool
199 or ld must be listed twice, under both !Zdynamiclib and
200 Zdynamiclib, with one of the cases reporting an error. */
201 /* Note that options taking arguments may appear multiple times on a
202 command line with different arguments each time, so put a * after
203 their names so all of them get passed. */
205 "%{static}%{!static:-dynamic} \
208 %{Zbundle_loader*:-bundle_loader %*} \
210 %{compatibility_version*:%e-compatibility_version only allowed with -dynamiclib\
212 %{current_version*:%e-current_version only allowed with -dynamiclib} \
213 %{Zforce_cpusubtype_ALL:-force_cpusubtype_ALL} \
214 %{Zforce_flat_namespace:-force_flat_namespace} \
215 %{Zinstall_name*:%e-install_name only allowed with -dynamiclib} \
216 %{keep_private_externs} \
220 %{Zbundle:%e-bundle not allowed with -dynamiclib} \
221 %{Zbundle_loader*:%e-bundle_loader not allowed with -dynamiclib} \
222 %{client_name*:%e-client_name not allowed with -dynamiclib} \
223 %{compatibility_version*} \
224 %{current_version*} \
225 %{Zforce_cpusubtype_ALL:%e-force_cpusubtype_ALL not allowed with -dynamiclib} \
226 %{Zforce_flat_namespace:%e-force_flat_namespace not allowed with -dynamiclib} \
227 %{Zinstall_name*:-install_name %*} \
228 %{keep_private_externs:%e-keep_private_externs not allowed with -dynamiclib} \
229 %{private_bundle:%e-private_bundle not allowed with -dynamiclib} \
231 %{Zall_load:-all_load}%{Zdynamiclib:%{!Zall_load:-noall_load}} \
232 %{Zallowable_client*:-allowable_client %*} \
233 %{Zbind_at_load:-bind_at_load} \
234 %{Zarch_errors_fatal:-arch_errors_fatal} \
235 %{Zdylib_file*:-dylib_file %*} \
236 %{Zdynamic:-dynamic}\
237 %{Zexported_symbols_list*:-exported_symbols_list %*} \
238 %{Zflat_namespace:-flat_namespace} \
239 %{headerpad_max_install_names*} \
240 %{Zimage_base*:-image_base %*} \
243 %{Zmulti_module:-multi_module} %{Zsingle_module:-single_module} \
244 %{Zmultiply_defined*:-multiply_defined %*} \
245 %{Zmultiplydefinedunused*:-multiply_defined_unused %*} \
246 %{prebind} %{noprebind} %{prebind_all_twolevel_modules} \
247 %{read_only_relocs} \
248 %{sectcreate*} %{sectorder*} %{seg1addr*} %{segprot*} %{seg_addr_table*} \
249 %{Zseg_addr_table_filename*:-seg_addr_table_filename %*} \
250 %{sub_library*} %{sub_umbrella*} \
251 %{twolevel_namespace} %{twolevel_namespace_hints} \
254 %{Zunexported_symbols_list*:-unexported_symbols_list %*} \
255 %{Zweak_reference_mismatches*:-weak_reference_mismatches %*} \
259 %{pagezero_size*} %{segs_read_*} %{seglinkedit} %{noseglinkedit} \
260 %{sectalign*} %{sectobjectsymbols*} %{segcreate*} %{whyload} \
261 %{whatsloaded} %{dylinker_install_name*} \
262 %{dylinker} %{Mach} "
265 /* Machine dependent libraries. */
268 #define LIB_SPEC "%{!static:-lSystem}"
270 /* We specify crt0.o as -lcrt0.o so that ld will search the library path. */
272 #undef STARTFILE_SPEC
273 #define STARTFILE_SPEC \
274 "%{!Zdynamiclib:%{Zbundle:%{!static:-lbundle1.o}} \
275 %{!Zbundle:%{pg:%{static:-lgcrt0.o} \
276 %{!static:%{object:-lgcrt0.o} \
277 %{!object:%{preload:-lgcrt0.o} \
278 %{!preload:-lgcrt1.o -lcrt2.o}}}} \
279 %{!pg:%{static:-lcrt0.o} \
280 %{!static:%{object:-lcrt0.o} \
281 %{!object:%{preload:-lcrt0.o} \
282 %{!preload:-lcrt1.o -lcrt2.o}}}}}}"
284 /* The native Darwin linker doesn't necessarily place files in the order
285 that they're specified on the link line. Thus, it is pointless
286 to put anything in ENDFILE_SPEC. */
287 /* #define ENDFILE_SPEC "" */
289 #undef DOLLARS_IN_IDENTIFIERS
290 #define DOLLARS_IN_IDENTIFIERS 2
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
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
332 #undef ASM_FILE_START
333 #define ASM_FILE_START(FILE)
336 #define ASM_FILE_END(FILE) \
338 machopic_finish (asm_out_file); \
339 if (strcmp (lang_hooks.name, "GNU C++") == 0) \
341 constructor_section (); \
342 destructor_section (); \
343 ASM_OUTPUT_ALIGN (FILE, 1); \
347 #define ASM_OUTPUT_SKIP(FILE,SIZE) \
348 fprintf (FILE, "\t.space %d\n", SIZE)
350 /* Give ObjC methods pretty symbol names. */
352 #undef OBJC_GEN_METHOD_LABEL
353 #define OBJC_GEN_METHOD_LABEL(BUF,IS_INST,CLASS_NAME,CAT_NAME,SEL_NAME,NUM) \
355 sprintf (BUF, "%c[%s(%s) %s]", (IS_INST) ? '-' : '+', \
356 (CLASS_NAME), (CAT_NAME), (SEL_NAME)); \
358 sprintf (BUF, "%c[%s %s]", (IS_INST) ? '-' : '+', \
359 (CLASS_NAME), (SEL_NAME)); \
362 /* The RTTI data (e.g., __ti4name) is common and public (and static),
363 but it does need to be referenced via indirect PIC data pointers.
364 The machopic_define_name calls are telling the machopic subsystem
365 that the name *is* defined in this module, so it doesn't need to
366 make them indirect. */
368 #undef ASM_DECLARE_OBJECT_NAME
369 #define ASM_DECLARE_OBJECT_NAME(FILE, NAME, DECL) \
371 const char *xname = NAME; \
372 if (GET_CODE (XEXP (DECL_RTL (DECL), 0)) != SYMBOL_REF) \
373 xname = IDENTIFIER_POINTER (DECL_NAME (DECL)); \
374 if ((TREE_STATIC (DECL) \
375 && (!DECL_COMMON (DECL) || !TREE_PUBLIC (DECL))) \
376 || DECL_INITIAL (DECL)) \
377 machopic_define_name (xname); \
378 if ((TREE_STATIC (DECL) \
379 && (!DECL_COMMON (DECL) || !TREE_PUBLIC (DECL))) \
380 || DECL_INITIAL (DECL)) \
381 (* targetm.encode_section_info) (DECL, false); \
382 ASM_OUTPUT_LABEL (FILE, xname); \
385 #define ASM_DECLARE_FUNCTION_NAME(FILE, NAME, DECL) \
387 const char *xname = NAME; \
388 if (GET_CODE (XEXP (DECL_RTL (DECL), 0)) != SYMBOL_REF) \
389 xname = IDENTIFIER_POINTER (DECL_NAME (DECL)); \
390 if ((TREE_STATIC (DECL) \
391 && (!DECL_COMMON (DECL) || !TREE_PUBLIC (DECL))) \
392 || DECL_INITIAL (DECL)) \
393 machopic_define_name (xname); \
394 if ((TREE_STATIC (DECL) \
395 && (!DECL_COMMON (DECL) || !TREE_PUBLIC (DECL))) \
396 || DECL_INITIAL (DECL)) \
397 (* targetm.encode_section_info) (DECL, false); \
398 ASM_OUTPUT_LABEL (FILE, xname); \
399 /* Avoid generating stubs for functions we've just defined by \
400 outputting any required stub name label now. */ \
401 machopic_output_possible_stub_label (FILE, xname); \
404 /* Wrap new method names in quotes so the assembler doesn't gag.
405 Make Objective-C internal symbols local. */
407 #undef ASM_OUTPUT_LABELREF
408 #define ASM_OUTPUT_LABELREF(FILE,NAME) \
410 const char *xname = darwin_strip_name_encoding (NAME); \
411 if (xname[0] == '&' || xname[0] == '*') \
413 int len = strlen (xname); \
414 if (len > 6 && !strcmp ("$stub", xname + len - 5)) \
415 machopic_validate_stub_or_non_lazy_ptr (xname, 1); \
416 else if (len > 7 && !strcmp ("$stub\"", xname + len - 6)) \
417 machopic_validate_stub_or_non_lazy_ptr (xname, 1); \
418 else if (len > 14 && !strcmp ("$non_lazy_ptr", xname + len - 13)) \
419 machopic_validate_stub_or_non_lazy_ptr (xname, 0); \
420 fputs (&xname[1], FILE); \
422 else if (xname[0] == '+' || xname[0] == '-') \
423 fprintf (FILE, "\"%s\"", xname); \
424 else if (!strncmp (xname, "_OBJC_", 6)) \
425 fprintf (FILE, "L%s", xname); \
426 else if (!strncmp (xname, ".objc_class_name_", 17)) \
427 fprintf (FILE, "%s", xname); \
429 fprintf (FILE, "_%s", xname); \
432 /* Output before executable code. */
433 #undef TEXT_SECTION_ASM_OP
434 #define TEXT_SECTION_ASM_OP ".text"
436 /* Output before writable data. */
438 #undef DATA_SECTION_ASM_OP
439 #define DATA_SECTION_ASM_OP ".data"
442 #define ALIGN_ASM_OP ".align"
444 #undef ASM_OUTPUT_ALIGN
445 #define ASM_OUTPUT_ALIGN(FILE,LOG) \
447 fprintf (FILE, "\t%s %d\n", ALIGN_ASM_OP, (LOG))
449 /* Ensure correct alignment of bss data. */
451 #undef ASM_OUTPUT_ALIGNED_DECL_LOCAL
452 #define ASM_OUTPUT_ALIGNED_DECL_LOCAL(FILE, DECL, NAME, SIZE, ALIGN) \
454 fputs (".lcomm ", (FILE)); \
455 assemble_name ((FILE), (NAME)); \
456 fprintf ((FILE), ",%u,%u\n", (SIZE), \
457 floor_log2 ((ALIGN) / BITS_PER_UNIT)); \
458 if ((DECL) && ((TREE_STATIC (DECL) \
459 && (!DECL_COMMON (DECL) || !TREE_PUBLIC (DECL))) \
460 || DECL_INITIAL (DECL))) \
461 (* targetm.encode_section_info) (DECL, false); \
462 if ((DECL) && ((TREE_STATIC (DECL) \
463 && (!DECL_COMMON (DECL) || !TREE_PUBLIC (DECL))) \
464 || DECL_INITIAL (DECL))) \
465 machopic_define_name (NAME); \
468 /* The maximum alignment which the object file format can support.
469 For Mach-O, this is 2^15. */
471 #undef MAX_OFILE_ALIGNMENT
472 #define MAX_OFILE_ALIGNMENT 0x8000
474 /* Create new Mach-O sections. */
476 #undef SECTION_FUNCTION
477 #define SECTION_FUNCTION(FUNCTION, SECTION, DIRECTIVE, OBJC) \
478 extern void FUNCTION PARAMS ((void)); \
482 if (in_section != SECTION) \
485 objc_section_init (); \
488 fprintf (asm_out_file, "%s\n", DIRECTIVE); \
489 in_section = SECTION; \
493 /* Darwin uses many types of special sections. */
495 #undef EXTRA_SECTIONS
496 #define EXTRA_SECTIONS \
497 in_const, in_const_data, in_cstring, in_literal4, in_literal8, \
498 in_constructor, in_destructor, in_mod_init, in_mod_term, \
499 in_objc_class, in_objc_meta_class, in_objc_category, \
500 in_objc_class_vars, in_objc_instance_vars, \
501 in_objc_cls_meth, in_objc_inst_meth, \
502 in_objc_cat_cls_meth, in_objc_cat_inst_meth, \
503 in_objc_selector_refs, \
504 in_objc_selector_fixup, \
505 in_objc_symbols, in_objc_module_info, \
506 in_objc_protocol, in_objc_string_object, \
507 in_objc_constant_string_object, \
508 in_objc_class_names, in_objc_meth_var_names, \
509 in_objc_meth_var_types, in_objc_cls_refs, \
510 in_machopic_nl_symbol_ptr, \
511 in_machopic_lazy_symbol_ptr, \
512 in_machopic_symbol_stub, \
513 in_machopic_picsymbol_stub, \
514 in_darwin_exception, in_darwin_eh_frame, \
517 #undef EXTRA_SECTION_FUNCTIONS
518 #define EXTRA_SECTION_FUNCTIONS \
519 static void objc_section_init PARAMS ((void)); \
520 SECTION_FUNCTION (const_section, \
523 SECTION_FUNCTION (const_data_section, \
526 SECTION_FUNCTION (cstring_section, \
529 SECTION_FUNCTION (literal4_section, \
532 SECTION_FUNCTION (literal8_section, \
535 SECTION_FUNCTION (constructor_section, \
538 SECTION_FUNCTION (mod_init_section, \
540 ".mod_init_func", 0) \
541 SECTION_FUNCTION (mod_term_section, \
543 ".mod_term_func", 0) \
544 SECTION_FUNCTION (destructor_section, \
547 SECTION_FUNCTION (objc_class_section, \
550 SECTION_FUNCTION (objc_meta_class_section, \
551 in_objc_meta_class, \
552 ".objc_meta_class", 1) \
553 SECTION_FUNCTION (objc_category_section, \
555 ".objc_category", 1) \
556 SECTION_FUNCTION (objc_class_vars_section, \
557 in_objc_class_vars, \
558 ".objc_class_vars", 1) \
559 SECTION_FUNCTION (objc_instance_vars_section, \
560 in_objc_instance_vars, \
561 ".objc_instance_vars", 1) \
562 SECTION_FUNCTION (objc_cls_meth_section, \
564 ".objc_cls_meth", 1) \
565 SECTION_FUNCTION (objc_inst_meth_section, \
567 ".objc_inst_meth", 1) \
568 SECTION_FUNCTION (objc_cat_cls_meth_section, \
569 in_objc_cat_cls_meth, \
570 ".objc_cat_cls_meth", 1) \
571 SECTION_FUNCTION (objc_cat_inst_meth_section, \
572 in_objc_cat_inst_meth, \
573 ".objc_cat_inst_meth", 1) \
574 SECTION_FUNCTION (objc_selector_refs_section, \
575 in_objc_selector_refs, \
576 ".objc_message_refs", 1) \
577 SECTION_FUNCTION (objc_selector_fixup_section, \
578 in_objc_selector_fixup, \
579 ".section __OBJC, __sel_fixup", 1) \
580 SECTION_FUNCTION (objc_symbols_section, \
582 ".objc_symbols", 1) \
583 SECTION_FUNCTION (objc_module_info_section, \
584 in_objc_module_info, \
585 ".objc_module_info", 1) \
586 SECTION_FUNCTION (objc_protocol_section, \
588 ".objc_protocol", 1) \
589 SECTION_FUNCTION (objc_string_object_section, \
590 in_objc_string_object, \
591 ".objc_string_object", 1) \
592 SECTION_FUNCTION (objc_constant_string_object_section, \
593 in_objc_constant_string_object, \
594 ".section __OBJC, __cstring_object", 1) \
595 SECTION_FUNCTION (objc_class_names_section, \
596 in_objc_class_names, \
597 ".objc_class_names", 1) \
598 SECTION_FUNCTION (objc_meth_var_names_section, \
599 in_objc_meth_var_names, \
600 ".objc_meth_var_names", 1) \
601 SECTION_FUNCTION (objc_meth_var_types_section, \
602 in_objc_meth_var_types, \
603 ".objc_meth_var_types", 1) \
604 SECTION_FUNCTION (objc_cls_refs_section, \
606 ".objc_cls_refs", 1) \
608 SECTION_FUNCTION (machopic_lazy_symbol_ptr_section, \
609 in_machopic_lazy_symbol_ptr, \
610 ".lazy_symbol_pointer", 0) \
611 SECTION_FUNCTION (machopic_nl_symbol_ptr_section, \
612 in_machopic_nl_symbol_ptr, \
613 ".non_lazy_symbol_pointer", 0) \
614 SECTION_FUNCTION (machopic_symbol_stub_section, \
615 in_machopic_symbol_stub, \
617 SECTION_FUNCTION (machopic_picsymbol_stub_section, \
618 in_machopic_picsymbol_stub, \
619 ".picsymbol_stub", 0) \
620 SECTION_FUNCTION (darwin_exception_section, \
621 in_darwin_exception, \
622 ".section __DATA,__gcc_except_tab", 0) \
623 SECTION_FUNCTION (darwin_eh_frame_section, \
624 in_darwin_eh_frame, \
625 ".section __TEXT,__eh_frame", 0) \
628 objc_section_init () \
630 static int been_here = 0; \
632 if (been_here == 0) \
635 /* written, cold -> hot */ \
636 objc_cat_cls_meth_section (); \
637 objc_cat_inst_meth_section (); \
638 objc_string_object_section (); \
639 objc_constant_string_object_section (); \
640 objc_selector_refs_section (); \
641 objc_selector_fixup_section (); \
642 objc_cls_refs_section (); \
643 objc_class_section (); \
644 objc_meta_class_section (); \
645 /* shared, hot -> cold */ \
646 objc_cls_meth_section (); \
647 objc_inst_meth_section (); \
648 objc_protocol_section (); \
649 objc_class_names_section (); \
650 objc_meth_var_types_section (); \
651 objc_meth_var_names_section (); \
652 objc_category_section (); \
653 objc_class_vars_section (); \
654 objc_instance_vars_section (); \
655 objc_module_info_section (); \
656 objc_symbols_section (); \
660 #define READONLY_DATA_SECTION const_section
662 #undef TARGET_ASM_SELECT_SECTION
663 #define TARGET_ASM_SELECT_SECTION machopic_select_section
664 #undef TARGET_ASM_SELECT_RTX_SECTION
665 #define TARGET_ASM_SELECT_RTX_SECTION machopic_select_rtx_section
667 #define ASM_DECLARE_UNRESOLVED_REFERENCE(FILE,NAME) \
671 fprintf (FILE, "\t.lazy_reference "); \
673 fprintf (FILE, "\t.reference "); \
674 assemble_name (FILE, NAME); \
675 fprintf (FILE, "\n"); \
679 #define ASM_DECLARE_CLASS_REFERENCE(FILE,NAME) \
682 fprintf (FILE, "\t"); \
683 assemble_name (FILE, NAME); \
684 fprintf (FILE, "=0\n"); \
685 (*targetm.asm_out.globalize_label) (FILE, NAME); \
689 /* Globalizing directive for a label. */
690 #define GLOBAL_ASM_OP ".globl "
691 #define TARGET_ASM_GLOBALIZE_LABEL darwin_globalize_label
693 #undef ASM_GENERATE_INTERNAL_LABEL
694 #define ASM_GENERATE_INTERNAL_LABEL(LABEL,PREFIX,NUM) \
695 sprintf (LABEL, "*%s%ld", PREFIX, (long)(NUM))
697 /* Since we have a separate readonly data section, define this so that
698 jump tables end up in text rather than data. */
700 #ifndef JUMP_TABLES_IN_TEXT_SECTION
701 #define JUMP_TABLES_IN_TEXT_SECTION 1
704 /* Symbolic names for various things we might know about a symbol. */
706 enum machopic_addr_class
{
708 MACHOPIC_DEFINED_DATA
,
709 MACHOPIC_UNDEFINED_DATA
,
710 MACHOPIC_DEFINED_FUNCTION
,
711 MACHOPIC_UNDEFINED_FUNCTION
714 /* Macros defining the various PIC cases. */
716 #define MACHOPIC_INDIRECT (flag_pic)
717 #define MACHOPIC_JUST_INDIRECT (flag_pic == 1)
718 #define MACHOPIC_PURE (flag_pic == 2)
720 #undef TARGET_ENCODE_SECTION_INFO
721 #define TARGET_ENCODE_SECTION_INFO darwin_encode_section_info
722 #undef TARGET_STRIP_NAME_ENCODING
723 #define TARGET_STRIP_NAME_ENCODING darwin_strip_name_encoding
725 #define GEN_BINDER_NAME_FOR_STUB(BUF,STUB,STUB_LENGTH) \
727 const char *const stub_ = (STUB); \
728 char *buffer_ = (BUF); \
729 strcpy (buffer_, stub_); \
730 if (stub_[0] == '"') \
732 strcpy (buffer_ + (STUB_LENGTH) - 1, "_binder\""); \
736 strcpy (buffer_ + (STUB_LENGTH), "_binder"); \
740 #define GEN_SYMBOL_NAME_FOR_SYMBOL(BUF,SYMBOL,SYMBOL_LENGTH) \
742 const char *const symbol_ = (SYMBOL); \
743 char *buffer_ = (BUF); \
744 if (name_needs_quotes (symbol_) && symbol_[0] != '"') \
746 sprintf (buffer_, "\"%s\"", symbol_); \
750 strcpy (buffer_, symbol_); \
754 /* Given a symbol name string, create the lazy pointer version
755 of the symbol name. */
757 #define GEN_LAZY_PTR_NAME_FOR_SYMBOL(BUF,SYMBOL,SYMBOL_LENGTH) \
759 const char *symbol_ = darwin_strip_name_encoding (SYMBOL); \
760 char *buffer_ = (BUF); \
761 if (symbol_[0] == '"') \
763 strcpy (buffer_, "\"L"); \
764 strcpy (buffer_ + 2, symbol_ + 1); \
765 strcpy (buffer_ + (SYMBOL_LENGTH), "$lazy_ptr\""); \
767 else if (name_needs_quotes (symbol_)) \
769 strcpy (buffer_, "\"L"); \
770 strcpy (buffer_ + 2, symbol_); \
771 strcpy (buffer_ + (SYMBOL_LENGTH) + 2, "$lazy_ptr\""); \
775 strcpy (buffer_, "L"); \
776 strcpy (buffer_ + 1, symbol_); \
777 strcpy (buffer_ + (SYMBOL_LENGTH) + 1, "$lazy_ptr"); \
781 #define TARGET_ASM_EXCEPTION_SECTION darwin_exception_section
783 #define TARGET_ASM_EH_FRAME_SECTION darwin_eh_frame_section
785 #undef ASM_PREFERRED_EH_DATA_FORMAT
786 #define ASM_PREFERRED_EH_DATA_FORMAT(CODE,GLOBAL) \
787 (((CODE) == 2 && (GLOBAL) == 1) \
788 ? (DW_EH_PE_pcrel | DW_EH_PE_indirect) : \
789 ((CODE) == 1 || (GLOBAL) == 0) ? DW_EH_PE_pcrel : DW_EH_PE_absptr)
791 #define ASM_OUTPUT_DWARF_DELTA(FILE,SIZE,LABEL1,LABEL2) \
792 darwin_asm_output_dwarf_delta (FILE, SIZE, LABEL1, LABEL2)
794 #define TARGET_TERMINATE_DW2_EH_FRAME_INFO false
796 #define DARWIN_REGISTER_TARGET_PRAGMAS(PFILE) \
798 cpp_register_pragma (PFILE, 0, "mark", darwin_pragma_ignore); \
799 cpp_register_pragma (PFILE, 0, "options", darwin_pragma_options); \
800 cpp_register_pragma (PFILE, 0, "segment", darwin_pragma_ignore); \
801 cpp_register_pragma (PFILE, 0, "unused", darwin_pragma_unused); \
805 #define ASM_APP_ON ""
807 #define ASM_APP_OFF ""