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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.
5
6 This file is part of GNU CC.
7
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)
11 any later version.
12
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.
17
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. */
22
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. */
29
30 /* Although NeXT ran on many different architectures, as of Jan 2001
31 the only supported Darwin targets are PowerPC and x86. */
32
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
36 correctly. */
37
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. */
41
42 #define OBJECT_FORMAT_MACHO
43
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.) */
47
48 #define MATH_LIBRARY ""
49
50 /* We have atexit. */
51
52 #define HAVE_ATEXIT
53
54 /* Define an empty body for the function do_global_dtors() in libgcc2.c. */
55
56 #define DO_GLOBAL_DTORS_BODY
57
58 /* The string value for __SIZE_TYPE__. */
59
60 #ifndef SIZE_TYPE
61 #define SIZE_TYPE "long unsigned int"
62 #endif
63
64 /* Type used for ptrdiff_t, as a string used in a declaration. */
65
66 #undef PTRDIFF_TYPE
67 #define PTRDIFF_TYPE "int"
68
69 /* wchar_t is int. */
70
71 #undef WCHAR_TYPE
72 #define WCHAR_TYPE "int"
73 #undef WCHAR_TYPE_SIZE
74 #define WCHAR_TYPE_SIZE 32
75
76 /* Default to using the NeXT-style runtime, since that's what is
77 pre-installed on Darwin systems. */
78
79 #define NEXT_OBJC_RUNTIME
80
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. */
83
84 #undef DEFAULT_PCC_STRUCT_RETURN
85 #define DEFAULT_PCC_STRUCT_RETURN 0
86
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.
91
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.)
98
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 /* Ignore -dynamic for now */
104 #define TARGET_OPTION_TRANSLATE_TABLE \
105 { "-all_load", "-Zall_load" }, \
106 { "-allowable_client", "-Zallowable_client" }, \
107 { "-arch_errors_fatal", "-Zarch_errors_fatal" }, \
108 { "-bind_at_load", "-Zbind_at_load" }, \
109 { "-bundle", "-Zbundle" }, \
110 { "-bundle_loader", "-Zbundle_loader" }, \
111 { "-weak_reference_mismatches", "-Zweak_reference_mismatches" }, \
112 { "-dependency-file", "-MF" }, \
113 { "-dylib_file", "-Zdylib_file" }, \
114 { "-dynamic", " " }, \
115 { "-dynamiclib", "-Zdynamiclib" }, \
116 { "-exported_symbols_list", "-Zexported_symbols_list" }, \
117 { "-seg_addr_table_filename", "-Zseg_addr_table_filename" }, \
118 { "-filelist", "-Xlinker -filelist -Xlinker" }, \
119 { "-flat_namespace", "-Zflat_namespace" }, \
120 { "-force_cpusubtype_ALL", "-Zforce_cpusubtype_ALL" }, \
121 { "-force_flat_namespace", "-Zforce_flat_namespace" }, \
122 { "-image_base", "-Zimage_base" }, \
123 { "-init", "-Zinit" }, \
124 { "-install_name", "-Zinstall_name" }, \
125 { "-multiply_defined_unused", "-Zmultiplydefinedunused" }, \
126 { "-multiply_defined", "-Zmultiply_defined" }, \
127 { "-multi_module", "-Zmulti_module" }, \
128 { "-static", "-static -Wa,-static" }, \
129 { "-single_module", "-Zsingle_module" }, \
130 { "-unexported_symbols_list", "-Zunexported_symbols_list" }
131
132 /* These compiler options take n arguments. */
133
134 #undef WORD_SWITCH_TAKES_ARG
135 #define WORD_SWITCH_TAKES_ARG(STR) \
136 (DEFAULT_WORD_SWITCH_TAKES_ARG (STR) ? 1 : \
137 !strcmp (STR, "Zallowable_client") ? 1 : \
138 !strcmp (STR, "arch") ? 1 : \
139 !strcmp (STR, "arch_only") ? 1 : \
140 !strcmp (STR, "Zbundle_loader") ? 1 : \
141 !strcmp (STR, "client_name") ? 1 : \
142 !strcmp (STR, "compatibility_version") ? 1 : \
143 !strcmp (STR, "current_version") ? 1 : \
144 !strcmp (STR, "Zdylib_file") ? 1 : \
145 !strcmp (STR, "Zexported_symbols_list") ? 1 : \
146 !strcmp (STR, "Zimage_base") ? 1 : \
147 !strcmp (STR, "Zinit") ? 1 : \
148 !strcmp (STR, "Zinstall_name") ? 1 : \
149 !strcmp (STR, "Zmultiplydefinedunused") ? 1 : \
150 !strcmp (STR, "Zmultiply_defined") ? 1 : \
151 !strcmp (STR, "precomp-trustfile") ? 1 : \
152 !strcmp (STR, "read_only_relocs") ? 1 : \
153 !strcmp (STR, "sectcreate") ? 3 : \
154 !strcmp (STR, "sectorder") ? 3 : \
155 !strcmp (STR, "Zseg_addr_table_filename") ?1 :\
156 !strcmp (STR, "seg1addr") ? 1 : \
157 !strcmp (STR, "segprot") ? 3 : \
158 !strcmp (STR, "seg_addr_table") ? 1 : \
159 !strcmp (STR, "sub_library") ? 1 : \
160 !strcmp (STR, "sub_umbrella") ? 1 : \
161 !strcmp (STR, "umbrella") ? 1 : \
162 !strcmp (STR, "undefined") ? 1 : \
163 !strcmp (STR, "Zunexported_symbols_list") ? 1 : \
164 !strcmp (STR, "Zweak_reference_mismatches") ? 1 : \
165 !strcmp (STR, "pagezero_size") ? 1 : \
166 !strcmp (STR, "segs_read_only_addr") ? 1 : \
167 !strcmp (STR, "segs_read_write_addr") ? 1 : \
168 !strcmp (STR, "sectalign") ? 3 : \
169 !strcmp (STR, "sectobjectsymbols") ? 2 : \
170 !strcmp (STR, "segcreate") ? 3 : \
171 !strcmp (STR, "dylinker_install_name") ? 1 : \
172 0)
173
174 /* Machine dependent cpp options. */
175
176 #undef CPP_SPEC
177 #define CPP_SPEC "%{static:-D__STATIC__}%{!static:-D__DYNAMIC__}"
178
179 /* This is mostly a clone of the standard LINK_COMMAND_SPEC, plus
180 precomp, libtool, and fat build additions. Also we
181 don't specify a second %G after %L because libSystem is
182 self-contained and doesn't need to link against libgcc.a. */
183 /* In general, random Darwin linker flags should go into LINK_SPEC
184 instead of LINK_COMMAND_SPEC. The command spec is better for
185 specifying the handling of options understood by generic Unix
186 linkers, and for positional arguments like libraries. */
187 #define LINK_COMMAND_SPEC "\
188 %{!fdump=*:%{!fsyntax-only:%{!precomp:%{!c:%{!M:%{!MM:%{!E:%{!S:\
189 %{!Zdynamiclib:%(linker)}%{Zdynamiclib:/usr/bin/libtool} \
190 %l %X %{d} %{s} %{t} %{Z} \
191 %{!Zdynamiclib:%{A} %{e*} %{m} %{N} %{n} %{r} %{u*} %{x} %{z}} \
192 %{@:-o %f%u.out}%{!@:%{o*}%{!o:-o a.out}} \
193 %{!Zdynamiclib:%{!A:%{!nostdlib:%{!nostartfiles:%S}}}} \
194 %{L*} %(link_libgcc) %o %{!nostdlib:%{!nodefaultlibs:%G %L}} \
195 %{!A:%{!nostdlib:%{!nostartfiles:%E}}} %{T*} %{F*} \
196 %{!--help:%{!no-c++filt|c++filt:| c++filt3 }} }}}}}}}}"
197
198 /* Please keep the random linker options in alphabetical order (modulo
199 'Z' and 'no' prefixes). Options that can only go to one of libtool
200 or ld must be listed twice, under both !Zdynamiclib and
201 Zdynamiclib, with one of the cases reporting an error. */
202 /* Note that options taking arguments may appear multiple times on a
203 command line with different arguments each time, so put a * after
204 their names so all of them get passed. */
205 #define LINK_SPEC \
206 "%{static}%{!static:-dynamic} \
207 %{!Zdynamiclib: \
208 %{Zbundle:-bundle} \
209 %{Zbundle_loader*:-bundle_loader %*} \
210 %{client_name*} \
211 %{compatibility_version*:%e-compatibility_version only allowed with -dynamiclib\
212 } \
213 %{current_version*:%e-current_version only allowed with -dynamiclib} \
214 %{Zforce_cpusubtype_ALL:-force_cpusubtype_ALL} \
215 %{Zforce_flat_namespace:-force_flat_namespace} \
216 %{Zinstall_name*:%e-install_name only allowed with -dynamiclib} \
217 %{keep_private_externs} \
218 %{private_bundle} \
219 } \
220 %{Zdynamiclib: \
221 %{Zbundle:%e-bundle not allowed with -dynamiclib} \
222 %{Zbundle_loader*:%e-bundle_loader not allowed with -dynamiclib} \
223 %{client_name*:%e-client_name not allowed with -dynamiclib} \
224 %{compatibility_version*} \
225 %{current_version*} \
226 %{Zforce_cpusubtype_ALL:%e-force_cpusubtype_ALL not allowed with -dynamiclib} \
227 %{Zforce_flat_namespace:%e-force_flat_namespace not allowed with -dynamiclib} \
228 %{Zinstall_name*:-install_name %*} \
229 %{keep_private_externs:%e-keep_private_externs not allowed with -dynamiclib} \
230 %{private_bundle:%e-private_bundle not allowed with -dynamiclib} \
231 } \
232 %{Zall_load:-all_load}%{Zdynamiclib:%{!Zall_load:-noall_load}} \
233 %{Zallowable_client*:-allowable_client %*} \
234 %{Zbind_at_load:-bind_at_load} \
235 %{Zarch_errors_fatal:-arch_errors_fatal} \
236 %{Zdylib_file*:-dylib_file %*} \
237 %{Zexported_symbols_list*:-exported_symbols_list %*} \
238 %{Zflat_namespace:-flat_namespace} \
239 %{headerpad_max_install_names*} \
240 %{Zimage_base*:-image_base %*} \
241 %{Zinit*:-init %*} \
242 %{nomultidefs} \
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} \
252 %{umbrella*} \
253 %{undefined*} \
254 %{Zunexported_symbols_list*:-unexported_symbols_list %*} \
255 %{Zweak_reference_mismatches*:-weak_reference_mismatches %*} \
256 %{X} \
257 %{y*} \
258 %{w} \
259 %{pagezero_size*} %{segs_read_*} %{seglinkedit} %{noseglinkedit} \
260 %{sectalign*} %{sectobjectsymbols*} %{segcreate*} %{whyload} \
261 %{whatsloaded} %{dylinker_install_name*} \
262 %{dylinker} %{Mach} "
263
264
265 /* Machine dependent libraries. */
266
267 #undef LIB_SPEC
268 #define LIB_SPEC "%{!static:-lSystem}"
269
270 /* We specify crt0.o as -lcrt0.o so that ld will search the library path. */
271
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}}}}}}"
283
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 "" */
288
289 #undef DOLLARS_IN_IDENTIFIERS
290 #define DOLLARS_IN_IDENTIFIERS 2
291
292 /* We use Dbx symbol format. */
293
294 #define DBX_DEBUGGING_INFO 1
295
296 /* When generating stabs debugging, use N_BINCL entries. */
297
298 #define DBX_USE_BINCL
299
300 /* There is no limit to the length of stabs strings. */
301
302 #define DBX_CONTIN_LENGTH 0
303
304 /* gdb needs a null N_SO at the end of each file for scattered loading. */
305
306 #undef DBX_OUTPUT_MAIN_SOURCE_FILE_END
307 #define DBX_OUTPUT_MAIN_SOURCE_FILE_END(FILE, FILENAME) \
308 do { text_section (); \
309 fprintf (FILE, \
310 "\t.stabs \"%s\",%d,0,0,Letext\nLetext:\n", "" , N_SO); \
311 } while (0)
312
313 /* Our profiling scheme doesn't LP labels and counter words. */
314
315 #define NO_PROFILE_COUNTERS
316
317 #undef INIT_SECTION_ASM_OP
318 #define INIT_SECTION_ASM_OP
319
320 #undef INVOKE__main
321
322 #define TARGET_ASM_CONSTRUCTOR machopic_asm_out_constructor
323 #define TARGET_ASM_DESTRUCTOR machopic_asm_out_destructor
324
325 /* Always prefix with an underscore. */
326
327 #define USER_LABEL_PREFIX "_"
328
329 /* Don't output a .file directive. That is only used by the assembler for
330 error reporting. */
331
332 #undef ASM_FILE_START
333 #define ASM_FILE_START(FILE)
334
335 #undef ASM_FILE_END
336 #define ASM_FILE_END(FILE) \
337 do { \
338 machopic_finish (asm_out_file); \
339 if (strcmp (lang_hooks.name, "GNU C++") == 0) \
340 { \
341 constructor_section (); \
342 destructor_section (); \
343 ASM_OUTPUT_ALIGN (FILE, 1); \
344 } \
345 } while (0)
346
347 #define ASM_OUTPUT_SKIP(FILE,SIZE) \
348 fprintf (FILE, "\t.space %d\n", SIZE)
349
350 /* Give ObjC methods pretty symbol names. */
351
352 #undef OBJC_GEN_METHOD_LABEL
353 #define OBJC_GEN_METHOD_LABEL(BUF,IS_INST,CLASS_NAME,CAT_NAME,SEL_NAME,NUM) \
354 do { if (CAT_NAME) \
355 sprintf (BUF, "%c[%s(%s) %s]", (IS_INST) ? '-' : '+', \
356 (CLASS_NAME), (CAT_NAME), (SEL_NAME)); \
357 else \
358 sprintf (BUF, "%c[%s %s]", (IS_INST) ? '-' : '+', \
359 (CLASS_NAME), (SEL_NAME)); \
360 } while (0)
361
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. */
367
368 #undef ASM_DECLARE_OBJECT_NAME
369 #define ASM_DECLARE_OBJECT_NAME(FILE, NAME, DECL) \
370 do { \
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); \
383 } while (0)
384
385 #define ASM_DECLARE_FUNCTION_NAME(FILE, NAME, DECL) \
386 do { \
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); \
402 } while (0)
403
404 /* Wrap new method names in quotes so the assembler doesn't gag.
405 Make Objective-C internal symbols local. */
406
407 #undef ASM_OUTPUT_LABELREF
408 #define ASM_OUTPUT_LABELREF(FILE,NAME) \
409 do { \
410 const char *xname = darwin_strip_name_encoding (NAME); \
411 if (xname[0] == '&' || xname[0] == '*') \
412 { \
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); \
421 } \
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); \
428 else \
429 fprintf (FILE, "_%s", xname); \
430 } while (0)
431
432 /* Output before executable code. */
433 #undef TEXT_SECTION_ASM_OP
434 #define TEXT_SECTION_ASM_OP ".text"
435
436 /* Output before writable data. */
437
438 #undef DATA_SECTION_ASM_OP
439 #define DATA_SECTION_ASM_OP ".data"
440
441 #undef ALIGN_ASM_OP
442 #define ALIGN_ASM_OP ".align"
443
444 #undef ASM_OUTPUT_ALIGN
445 #define ASM_OUTPUT_ALIGN(FILE,LOG) \
446 if ((LOG) != 0) \
447 fprintf (FILE, "\t%s %d\n", ALIGN_ASM_OP, (LOG))
448
449 /* Ensure correct alignment of bss data. */
450
451 #undef ASM_OUTPUT_ALIGNED_DECL_LOCAL
452 #define ASM_OUTPUT_ALIGNED_DECL_LOCAL(FILE, DECL, NAME, SIZE, ALIGN) \
453 do { \
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); \
466 } while (0)
467
468 /* The maximum alignment which the object file format can support.
469 For Mach-O, this is 2^15. */
470
471 #undef MAX_OFILE_ALIGNMENT
472 #define MAX_OFILE_ALIGNMENT 0x8000
473
474 /* Create new Mach-O sections. */
475
476 #undef SECTION_FUNCTION
477 #define SECTION_FUNCTION(FUNCTION, SECTION, DIRECTIVE, OBJC) \
478 extern void FUNCTION PARAMS ((void)); \
479 void \
480 FUNCTION () \
481 { \
482 if (in_section != SECTION) \
483 { \
484 if (OBJC) \
485 objc_section_init (); \
486 data_section (); \
487 if (asm_out_file) \
488 fprintf (asm_out_file, "%s\n", DIRECTIVE); \
489 in_section = SECTION; \
490 } \
491 } \
492
493 /* Darwin uses many types of special sections. */
494
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, \
515 num_sections
516
517 #undef EXTRA_SECTION_FUNCTIONS
518 #define EXTRA_SECTION_FUNCTIONS \
519 static void objc_section_init PARAMS ((void)); \
520 SECTION_FUNCTION (const_section, \
521 in_const, \
522 ".const", 0) \
523 SECTION_FUNCTION (const_data_section, \
524 in_const_data, \
525 ".const_data", 0) \
526 SECTION_FUNCTION (cstring_section, \
527 in_cstring, \
528 ".cstring", 0) \
529 SECTION_FUNCTION (literal4_section, \
530 in_literal4, \
531 ".literal4", 0) \
532 SECTION_FUNCTION (literal8_section, \
533 in_literal8, \
534 ".literal8", 0) \
535 SECTION_FUNCTION (constructor_section, \
536 in_constructor, \
537 ".constructor", 0) \
538 SECTION_FUNCTION (mod_init_section, \
539 in_mod_init, \
540 ".mod_init_func", 0) \
541 SECTION_FUNCTION (mod_term_section, \
542 in_mod_term, \
543 ".mod_term_func", 0) \
544 SECTION_FUNCTION (destructor_section, \
545 in_destructor, \
546 ".destructor", 0) \
547 SECTION_FUNCTION (objc_class_section, \
548 in_objc_class, \
549 ".objc_class", 1) \
550 SECTION_FUNCTION (objc_meta_class_section, \
551 in_objc_meta_class, \
552 ".objc_meta_class", 1) \
553 SECTION_FUNCTION (objc_category_section, \
554 in_objc_category, \
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, \
563 in_objc_cls_meth, \
564 ".objc_cls_meth", 1) \
565 SECTION_FUNCTION (objc_inst_meth_section, \
566 in_objc_inst_meth, \
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, \
581 in_objc_symbols, \
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, \
587 in_objc_protocol, \
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, \
605 in_objc_cls_refs, \
606 ".objc_cls_refs", 1) \
607 \
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, \
616 ".symbol_stub", 0) \
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) \
626 \
627 static void \
628 objc_section_init () \
629 { \
630 static int been_here = 0; \
631 \
632 if (been_here == 0) \
633 { \
634 been_here = 1; \
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 (); \
657 } \
658 }
659
660 #define READONLY_DATA_SECTION const_section
661
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
666
667 #define ASM_DECLARE_UNRESOLVED_REFERENCE(FILE,NAME) \
668 do { \
669 if (FILE) { \
670 if (flag_pic) \
671 fprintf (FILE, "\t.lazy_reference "); \
672 else \
673 fprintf (FILE, "\t.reference "); \
674 assemble_name (FILE, NAME); \
675 fprintf (FILE, "\n"); \
676 } \
677 } while (0)
678
679 #define ASM_DECLARE_CLASS_REFERENCE(FILE,NAME) \
680 do { \
681 if (FILE) { \
682 fprintf (FILE, "\t"); \
683 assemble_name (FILE, NAME); \
684 fprintf (FILE, "=0\n"); \
685 (*targetm.asm_out.globalize_label) (FILE, NAME); \
686 } \
687 } while (0)
688
689 /* Globalizing directive for a label. */
690 #define GLOBAL_ASM_OP ".globl "
691 #define TARGET_ASM_GLOBALIZE_LABEL darwin_globalize_label
692
693 #undef ASM_GENERATE_INTERNAL_LABEL
694 #define ASM_GENERATE_INTERNAL_LABEL(LABEL,PREFIX,NUM) \
695 sprintf (LABEL, "*%s%ld", PREFIX, (long)(NUM))
696
697 /* This is how to output an internal numbered label where PREFIX is
698 the class of label and NUM is the number within the class. */
699
700 #undef ASM_OUTPUT_INTERNAL_LABEL
701 #define ASM_OUTPUT_INTERNAL_LABEL(FILE,PREFIX,NUM) \
702 fprintf (FILE, "%s%d:\n", PREFIX, NUM)
703
704 /* Since we have a separate readonly data section, define this so that
705 jump tables end up in text rather than data. */
706
707 #ifndef JUMP_TABLES_IN_TEXT_SECTION
708 #define JUMP_TABLES_IN_TEXT_SECTION 1
709 #endif
710
711 /* Symbolic names for various things we might know about a symbol. */
712
713 enum machopic_addr_class {
714 MACHOPIC_UNDEFINED,
715 MACHOPIC_DEFINED_DATA,
716 MACHOPIC_UNDEFINED_DATA,
717 MACHOPIC_DEFINED_FUNCTION,
718 MACHOPIC_UNDEFINED_FUNCTION
719 };
720
721 /* Macros defining the various PIC cases. */
722
723 #define MACHOPIC_INDIRECT (flag_pic)
724 #define MACHOPIC_JUST_INDIRECT (flag_pic == 1)
725 #define MACHOPIC_PURE (flag_pic == 2)
726
727 #undef TARGET_ENCODE_SECTION_INFO
728 #define TARGET_ENCODE_SECTION_INFO darwin_encode_section_info
729 #undef TARGET_STRIP_NAME_ENCODING
730 #define TARGET_STRIP_NAME_ENCODING darwin_strip_name_encoding
731
732 #define GEN_BINDER_NAME_FOR_STUB(BUF,STUB,STUB_LENGTH) \
733 do { \
734 const char *const stub_ = (STUB); \
735 char *buffer_ = (BUF); \
736 strcpy (buffer_, stub_); \
737 if (stub_[0] == '"') \
738 { \
739 strcpy (buffer_ + (STUB_LENGTH) - 1, "_binder\""); \
740 } \
741 else \
742 { \
743 strcpy (buffer_ + (STUB_LENGTH), "_binder"); \
744 } \
745 } while (0)
746
747 #define GEN_SYMBOL_NAME_FOR_SYMBOL(BUF,SYMBOL,SYMBOL_LENGTH) \
748 do { \
749 const char *const symbol_ = (SYMBOL); \
750 char *buffer_ = (BUF); \
751 if (name_needs_quotes (symbol_) && symbol_[0] != '"') \
752 { \
753 sprintf (buffer_, "\"%s\"", symbol_); \
754 } \
755 else \
756 { \
757 strcpy (buffer_, symbol_); \
758 } \
759 } while (0)
760
761 /* Given a symbol name string, create the lazy pointer version
762 of the symbol name. */
763
764 #define GEN_LAZY_PTR_NAME_FOR_SYMBOL(BUF,SYMBOL,SYMBOL_LENGTH) \
765 do { \
766 const char *symbol_ = darwin_strip_name_encoding (SYMBOL); \
767 char *buffer_ = (BUF); \
768 if (symbol_[0] == '"') \
769 { \
770 strcpy (buffer_, "\"L"); \
771 strcpy (buffer_ + 2, symbol_ + 1); \
772 strcpy (buffer_ + (SYMBOL_LENGTH), "$lazy_ptr\""); \
773 } \
774 else if (name_needs_quotes (symbol_)) \
775 { \
776 strcpy (buffer_, "\"L"); \
777 strcpy (buffer_ + 2, symbol_); \
778 strcpy (buffer_ + (SYMBOL_LENGTH) + 2, "$lazy_ptr\""); \
779 } \
780 else \
781 { \
782 strcpy (buffer_, "L"); \
783 strcpy (buffer_ + 1, symbol_); \
784 strcpy (buffer_ + (SYMBOL_LENGTH) + 1, "$lazy_ptr"); \
785 } \
786 } while (0)
787
788 #define TARGET_ASM_EXCEPTION_SECTION darwin_exception_section
789
790 #define TARGET_ASM_EH_FRAME_SECTION darwin_eh_frame_section
791
792 #undef ASM_PREFERRED_EH_DATA_FORMAT
793 #define ASM_PREFERRED_EH_DATA_FORMAT(CODE,GLOBAL) \
794 (((CODE) == 2 && (GLOBAL) == 1) \
795 ? (DW_EH_PE_pcrel | DW_EH_PE_indirect) : \
796 ((CODE) == 1 || (GLOBAL) == 0) ? DW_EH_PE_pcrel : DW_EH_PE_absptr)
797
798 #define ASM_OUTPUT_DWARF_DELTA(FILE,SIZE,LABEL1,LABEL2) \
799 darwin_asm_output_dwarf_delta (FILE, SIZE, LABEL1, LABEL2)
800
801 #define TARGET_TERMINATE_DW2_EH_FRAME_INFO false
802
803 #define DARWIN_REGISTER_TARGET_PRAGMAS(PFILE) \
804 do { \
805 cpp_register_pragma (PFILE, 0, "mark", darwin_pragma_ignore); \
806 cpp_register_pragma (PFILE, 0, "options", darwin_pragma_options); \
807 cpp_register_pragma (PFILE, 0, "segment", darwin_pragma_ignore); \
808 cpp_register_pragma (PFILE, 0, "unused", darwin_pragma_unused); \
809 } while (0)
810
811 #undef ASM_APP_ON
812 #define ASM_APP_ON ""
813 #undef ASM_APP_OFF
814 #define ASM_APP_OFF ""
Mirror of https://gcc.gnu.org/git/gcc.git