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eff01bb6 | 1 | /* Definitions of various defaults for tm.h macros. |
ad616de1 KH |
2 | Copyright (C) 1992, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, |
3 | 2005 | |
d8ea8f28 | 4 | Free Software Foundation, Inc. |
b33c316c | 5 | Contributed by Ron Guilmette (rfg@monkeys.com) |
c53a8ab6 | 6 | |
1322177d | 7 | This file is part of GCC. |
c53a8ab6 | 8 | |
1322177d LB |
9 | GCC is free software; you can redistribute it and/or modify it under |
10 | the terms of the GNU General Public License as published by the Free | |
11 | Software Foundation; either version 2, or (at your option) any later | |
12 | version. | |
c53a8ab6 | 13 | |
1322177d LB |
14 | GCC is distributed in the hope that it will be useful, but WITHOUT ANY |
15 | WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
16 | FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
17 | for more details. | |
c53a8ab6 RS |
18 | |
19 | You should have received a copy of the GNU General Public License | |
1322177d LB |
20 | along with GCC; see the file COPYING. If not, write to the Free |
21 | Software Foundation, 59 Temple Place - Suite 330, Boston, MA | |
22 | 02111-1307, USA. */ | |
c53a8ab6 | 23 | |
d8ea8f28 ZW |
24 | #ifndef GCC_DEFAULTS_H |
25 | #define GCC_DEFAULTS_H | |
26 | ||
2f8dd115 NB |
27 | #ifndef GET_ENVIRONMENT |
28 | #define GET_ENVIRONMENT(VALUE, NAME) do { (VALUE) = getenv (NAME); } while (0) | |
29 | #endif | |
30 | ||
95ec27aa SB |
31 | #define obstack_chunk_alloc ((void *(*) (long)) xmalloc) |
32 | #define obstack_chunk_free ((void (*) (void *)) free) | |
33 | #define OBSTACK_CHUNK_SIZE 0 | |
34 | #define gcc_obstack_init(OBSTACK) \ | |
35 | _obstack_begin ((OBSTACK), OBSTACK_CHUNK_SIZE, 0, \ | |
36 | obstack_chunk_alloc, \ | |
37 | obstack_chunk_free) | |
4fa31c2a | 38 | |
4977bab6 ZW |
39 | /* Store in OUTPUT a string (made with alloca) containing an |
40 | assembler-name for a local static variable or function named NAME. | |
7b73db04 CH |
41 | LABELNO is an integer which is different for each call. */ |
42 | ||
4977bab6 ZW |
43 | #ifndef ASM_PN_FORMAT |
44 | # ifndef NO_DOT_IN_LABEL | |
45 | # define ASM_PN_FORMAT "%s.%lu" | |
46 | # else | |
47 | # ifndef NO_DOLLAR_IN_LABEL | |
48 | # define ASM_PN_FORMAT "%s$%lu" | |
49 | # else | |
50 | # define ASM_PN_FORMAT "__%s_%lu" | |
51 | # endif | |
52 | # endif | |
53 | #endif /* ! ASM_PN_FORMAT */ | |
54 | ||
7b73db04 | 55 | #ifndef ASM_FORMAT_PRIVATE_NAME |
4977bab6 ZW |
56 | # define ASM_FORMAT_PRIVATE_NAME(OUTPUT, NAME, LABELNO) \ |
57 | do { const char *const name_ = (NAME); \ | |
28dab132 BI |
58 | char *const output_ = (OUTPUT) = \ |
59 | (char *) alloca (strlen (name_) + 32); \ | |
4977bab6 | 60 | sprintf (output_, ASM_PN_FORMAT, name_, (unsigned long)(LABELNO)); \ |
7b73db04 CH |
61 | } while (0) |
62 | #endif | |
63 | ||
7b73db04 CH |
64 | /* This is how to output an element of a case-vector that is absolute. |
65 | Some targets don't use this, but we have to define it anyway. */ | |
66 | ||
67 | #ifndef ASM_OUTPUT_ADDR_VEC_ELT | |
68 | #define ASM_OUTPUT_ADDR_VEC_ELT(FILE, VALUE) \ | |
07b50aad | 69 | do { fputs (integer_asm_op (POINTER_SIZE / BITS_PER_UNIT, TRUE), FILE); \ |
4977bab6 | 70 | (*targetm.asm_out.internal_label) (FILE, "L", (VALUE)); \ |
7b73db04 CH |
71 | fputc ('\n', FILE); \ |
72 | } while (0) | |
73 | #endif | |
74 | ||
e0a21ab9 | 75 | /* Choose a reasonable default for ASM_OUTPUT_ASCII. */ |
c53a8ab6 RS |
76 | |
77 | #ifndef ASM_OUTPUT_ASCII | |
78 | #define ASM_OUTPUT_ASCII(MYFILE, MYSTRING, MYLENGTH) \ | |
79 | do { \ | |
80 | FILE *_hide_asm_out_file = (MYFILE); \ | |
47ee9bcb | 81 | const unsigned char *_hide_p = (const unsigned char *) (MYSTRING); \ |
c53a8ab6 RS |
82 | int _hide_thissize = (MYLENGTH); \ |
83 | { \ | |
84 | FILE *asm_out_file = _hide_asm_out_file; \ | |
47ee9bcb | 85 | const unsigned char *p = _hide_p; \ |
c53a8ab6 RS |
86 | int thissize = _hide_thissize; \ |
87 | int i; \ | |
88 | fprintf (asm_out_file, "\t.ascii \""); \ | |
89 | \ | |
90 | for (i = 0; i < thissize; i++) \ | |
91 | { \ | |
b3694847 | 92 | int c = p[i]; \ |
c53a8ab6 RS |
93 | if (c == '\"' || c == '\\') \ |
94 | putc ('\\', asm_out_file); \ | |
5f6d3823 | 95 | if (ISPRINT(c)) \ |
c53a8ab6 RS |
96 | putc (c, asm_out_file); \ |
97 | else \ | |
98 | { \ | |
99 | fprintf (asm_out_file, "\\%o", c); \ | |
100 | /* After an octal-escape, if a digit follows, \ | |
101 | terminate one string constant and start another. \ | |
8aeea6e6 | 102 | The VAX assembler fails to stop reading the escape \ |
c53a8ab6 RS |
103 | after three digits, so this is the only way we \ |
104 | can get it to parse the data properly. */ \ | |
d07ecc3b | 105 | if (i < thissize - 1 && ISDIGIT(p[i + 1])) \ |
c53a8ab6 RS |
106 | fprintf (asm_out_file, "\"\n\t.ascii \""); \ |
107 | } \ | |
108 | } \ | |
109 | fprintf (asm_out_file, "\"\n"); \ | |
110 | } \ | |
111 | } \ | |
112 | while (0) | |
113 | #endif | |
d0d4af87 | 114 | |
650f773a JW |
115 | /* This is how we tell the assembler to equate two values. */ |
116 | #ifdef SET_ASM_OP | |
117 | #ifndef ASM_OUTPUT_DEF | |
118 | #define ASM_OUTPUT_DEF(FILE,LABEL1,LABEL2) \ | |
e8638df0 | 119 | do { fprintf ((FILE), "%s", SET_ASM_OP); \ |
650f773a JW |
120 | assemble_name (FILE, LABEL1); \ |
121 | fprintf (FILE, ","); \ | |
122 | assemble_name (FILE, LABEL2); \ | |
123 | fprintf (FILE, "\n"); \ | |
124 | } while (0) | |
125 | #endif | |
126 | #endif | |
daefd78b | 127 | |
083b6717 JDA |
128 | /* Decide whether to defer emitting the assembler output for an equate |
129 | of two values. The default is to not defer output. */ | |
130 | #ifndef TARGET_DEFERRED_OUTPUT_DEFS | |
131 | #define TARGET_DEFERRED_OUTPUT_DEFS(DECL,TARGET) false | |
132 | #endif | |
133 | ||
4ad5e05d KG |
134 | /* This is how to output the definition of a user-level label named |
135 | NAME, such as the label on a static function or variable NAME. */ | |
136 | ||
137 | #ifndef ASM_OUTPUT_LABEL | |
138 | #define ASM_OUTPUT_LABEL(FILE,NAME) \ | |
139 | do { assemble_name ((FILE), (NAME)); fputs (":\n", (FILE)); } while (0) | |
140 | #endif | |
141 | ||
57829bc4 MM |
142 | /* Output the definition of a compiler-generated label named NAME. */ |
143 | #ifndef ASM_OUTPUT_INTERNAL_LABEL | |
144 | #define ASM_OUTPUT_INTERNAL_LABEL(FILE,NAME) \ | |
145 | do { \ | |
146 | assemble_name_raw ((FILE), (NAME)); \ | |
147 | fputs (":\n", (FILE)); \ | |
148 | } while (0) | |
149 | #endif | |
150 | ||
81d77cda RK |
151 | /* This is how to output a reference to a user-level label named NAME. */ |
152 | ||
153 | #ifndef ASM_OUTPUT_LABELREF | |
19283265 | 154 | #define ASM_OUTPUT_LABELREF(FILE,NAME) asm_fprintf ((FILE), "%U%s", (NAME)) |
81d77cda RK |
155 | #endif |
156 | ||
8215347e JW |
157 | /* Allow target to print debug info labels specially. This is useful for |
158 | VLIW targets, since debug info labels should go into the middle of | |
159 | instruction bundles instead of breaking them. */ | |
160 | ||
161 | #ifndef ASM_OUTPUT_DEBUG_LABEL | |
162 | #define ASM_OUTPUT_DEBUG_LABEL(FILE, PREFIX, NUM) \ | |
4977bab6 | 163 | (*targetm.asm_out.internal_label) (FILE, PREFIX, NUM) |
8215347e JW |
164 | #endif |
165 | ||
3aa8ab7b | 166 | /* This is how we tell the assembler that a symbol is weak. */ |
20c93f7c RO |
167 | #ifndef ASM_OUTPUT_WEAK_ALIAS |
168 | #if defined (ASM_WEAKEN_LABEL) && defined (ASM_OUTPUT_DEF) | |
3aa8ab7b L |
169 | #define ASM_OUTPUT_WEAK_ALIAS(STREAM, NAME, VALUE) \ |
170 | do \ | |
171 | { \ | |
172 | ASM_WEAKEN_LABEL (STREAM, NAME); \ | |
173 | if (VALUE) \ | |
174 | ASM_OUTPUT_DEF (STREAM, NAME, VALUE); \ | |
175 | } \ | |
176 | while (0) | |
177 | #endif | |
20c93f7c | 178 | #endif |
3aa8ab7b | 179 | |
2be2ac70 ZW |
180 | /* How to emit a .type directive. */ |
181 | #ifndef ASM_OUTPUT_TYPE_DIRECTIVE | |
182 | #if defined TYPE_ASM_OP && defined TYPE_OPERAND_FMT | |
183 | #define ASM_OUTPUT_TYPE_DIRECTIVE(STREAM, NAME, TYPE) \ | |
184 | do \ | |
185 | { \ | |
186 | fputs (TYPE_ASM_OP, STREAM); \ | |
187 | assemble_name (STREAM, NAME); \ | |
188 | fputs (", ", STREAM); \ | |
189 | fprintf (STREAM, TYPE_OPERAND_FMT, TYPE); \ | |
190 | putc ('\n', STREAM); \ | |
191 | } \ | |
192 | while (0) | |
193 | #endif | |
194 | #endif | |
195 | ||
196 | /* How to emit a .size directive. */ | |
197 | #ifndef ASM_OUTPUT_SIZE_DIRECTIVE | |
198 | #ifdef SIZE_ASM_OP | |
199 | #define ASM_OUTPUT_SIZE_DIRECTIVE(STREAM, NAME, SIZE) \ | |
200 | do \ | |
201 | { \ | |
202 | HOST_WIDE_INT size_ = (SIZE); \ | |
203 | fputs (SIZE_ASM_OP, STREAM); \ | |
204 | assemble_name (STREAM, NAME); \ | |
90ff44cf | 205 | fprintf (STREAM, ", " HOST_WIDE_INT_PRINT_DEC "\n", size_); \ |
2be2ac70 ZW |
206 | } \ |
207 | while (0) | |
208 | ||
99086d59 | 209 | #define ASM_OUTPUT_MEASURED_SIZE(STREAM, NAME) \ |
2be2ac70 ZW |
210 | do \ |
211 | { \ | |
212 | fputs (SIZE_ASM_OP, STREAM); \ | |
99086d59 ZW |
213 | assemble_name (STREAM, NAME); \ |
214 | fputs (", .-", STREAM); \ | |
215 | assemble_name (STREAM, NAME); \ | |
2be2ac70 ZW |
216 | putc ('\n', STREAM); \ |
217 | } \ | |
218 | while (0) | |
219 | ||
220 | #endif | |
221 | #endif | |
222 | ||
daefd78b JM |
223 | /* This determines whether or not we support weak symbols. */ |
224 | #ifndef SUPPORTS_WEAK | |
79c4e63f | 225 | #if defined (ASM_WEAKEN_LABEL) || defined (ASM_WEAKEN_DECL) |
daefd78b JM |
226 | #define SUPPORTS_WEAK 1 |
227 | #else | |
228 | #define SUPPORTS_WEAK 0 | |
229 | #endif | |
230 | #endif | |
a6ab3aad | 231 | |
1ca894a0 MM |
232 | /* This determines whether or not we support link-once semantics. */ |
233 | #ifndef SUPPORTS_ONE_ONLY | |
234 | #ifdef MAKE_DECL_ONE_ONLY | |
235 | #define SUPPORTS_ONE_ONLY 1 | |
236 | #else | |
237 | #define SUPPORTS_ONE_ONLY 0 | |
238 | #endif | |
239 | #endif | |
240 | ||
0524c91d MA |
241 | /* This determines whether weak symbols must be left out of a static |
242 | archive's table of contents. Defining this macro to be nonzero has | |
243 | the consequence that certain symbols will not be made weak that | |
244 | otherwise would be. The C++ ABI requires this macro to be zero; | |
8c27b7d4 | 245 | see the documentation. */ |
0524c91d MA |
246 | #ifndef TARGET_WEAK_NOT_IN_ARCHIVE_TOC |
247 | #define TARGET_WEAK_NOT_IN_ARCHIVE_TOC 0 | |
4746cf84 MA |
248 | #endif |
249 | ||
ea4b7848 | 250 | /* This determines whether or not we need linkonce unwind information. */ |
4746cf84 MA |
251 | #ifndef TARGET_USES_WEAK_UNWIND_INFO |
252 | #define TARGET_USES_WEAK_UNWIND_INFO 0 | |
253 | #endif | |
254 | ||
d48fd218 ZW |
255 | /* By default, there is no prefix on user-defined symbols. */ |
256 | #ifndef USER_LABEL_PREFIX | |
257 | #define USER_LABEL_PREFIX "" | |
258 | #endif | |
259 | ||
8f08ea1e | 260 | /* If the target supports weak symbols, define TARGET_ATTRIBUTE_WEAK to |
f676971a | 261 | provide a weak attribute. Else define it to nothing. |
8f08ea1e | 262 | |
d02af173 | 263 | This would normally belong in ansidecl.h, but SUPPORTS_WEAK is |
8f08ea1e L |
264 | not available at that time. |
265 | ||
266 | Note, this is only for use by target files which we know are to be | |
267 | compiled by GCC. */ | |
268 | #ifndef TARGET_ATTRIBUTE_WEAK | |
269 | # if SUPPORTS_WEAK | |
270 | # define TARGET_ATTRIBUTE_WEAK __attribute__ ((weak)) | |
271 | # else | |
272 | # define TARGET_ATTRIBUTE_WEAK | |
273 | # endif | |
274 | #endif | |
275 | ||
4746cf84 | 276 | /* Determines whether we may use common symbols to represent one-only |
9cf737f8 | 277 | semantics (a.k.a. "vague linkage"). */ |
4746cf84 MA |
278 | #ifndef USE_COMMON_FOR_ONE_ONLY |
279 | # define USE_COMMON_FOR_ONE_ONLY 1 | |
280 | #endif | |
281 | ||
15072eb1 ZW |
282 | /* By default we can assume that all global symbols are in one namespace, |
283 | across all shared libraries. */ | |
284 | #ifndef MULTIPLE_SYMBOL_SPACES | |
285 | # define MULTIPLE_SYMBOL_SPACES 0 | |
286 | #endif | |
4746cf84 | 287 | |
ea4f1fce JO |
288 | /* If the target supports init_priority C++ attribute, give |
289 | SUPPORTS_INIT_PRIORITY a nonzero value. */ | |
290 | #ifndef SUPPORTS_INIT_PRIORITY | |
291 | #define SUPPORTS_INIT_PRIORITY 1 | |
292 | #endif /* SUPPORTS_INIT_PRIORITY */ | |
293 | ||
5897739e JO |
294 | /* If duplicate library search directories can be removed from a |
295 | linker command without changing the linker's semantics, give this | |
296 | symbol a nonzero. */ | |
297 | #ifndef LINK_ELIMINATE_DUPLICATE_LDIRECTORIES | |
298 | #define LINK_ELIMINATE_DUPLICATE_LDIRECTORIES 0 | |
299 | #endif /* LINK_ELIMINATE_DUPLICATE_LDIRECTORIES */ | |
300 | ||
a6ab3aad JM |
301 | /* If we have a definition of INCOMING_RETURN_ADDR_RTX, assume that |
302 | the rest of the DWARF 2 frame unwind support is also provided. */ | |
0021b564 JM |
303 | #if !defined (DWARF2_UNWIND_INFO) && defined (INCOMING_RETURN_ADDR_RTX) |
304 | #define DWARF2_UNWIND_INFO 1 | |
a6ab3aad | 305 | #endif |
b366352b | 306 | |
2cc07db4 RH |
307 | /* If we have named sections, and we're using crtstuff to run ctors, |
308 | use them for registering eh frame information. */ | |
bc2a8f08 RH |
309 | #if defined (TARGET_ASM_NAMED_SECTION) && DWARF2_UNWIND_INFO \ |
310 | && !defined(EH_FRAME_IN_DATA_SECTION) | |
7c262518 RH |
311 | #ifndef EH_FRAME_SECTION_NAME |
312 | #define EH_FRAME_SECTION_NAME ".eh_frame" | |
313 | #endif | |
31cf0144 JM |
314 | #endif |
315 | ||
1a35e62d MM |
316 | /* On many systems, different EH table encodings are used under |
317 | difference circumstances. Some will require runtime relocations; | |
318 | some will not. For those that do not require runtime relocations, | |
319 | we would like to make the table read-only. However, since the | |
320 | read-only tables may need to be combined with read-write tables | |
321 | that do require runtime relocation, it is not safe to make the | |
322 | tables read-only unless the linker will merge read-only and | |
323 | read-write sections into a single read-write section. If your | |
324 | linker does not have this ability, but your system is such that no | |
325 | encoding used with non-PIC code will ever require a runtime | |
326 | relocation, then you can define EH_TABLES_CAN_BE_READ_ONLY to 1 in | |
327 | your target configuration file. */ | |
328 | #ifndef EH_TABLES_CAN_BE_READ_ONLY | |
329 | #ifdef HAVE_LD_RO_RW_SECTION_MIXING | |
330 | #define EH_TABLES_CAN_BE_READ_ONLY 1 | |
331 | #else | |
332 | #define EH_TABLES_CAN_BE_READ_ONLY 0 | |
333 | #endif | |
334 | #endif | |
335 | ||
6351543d AG |
336 | /* If we have named section and we support weak symbols, then use the |
337 | .jcr section for recording java classes which need to be registered | |
338 | at program start-up time. */ | |
339 | #if defined (TARGET_ASM_NAMED_SECTION) && SUPPORTS_WEAK | |
340 | #ifndef JCR_SECTION_NAME | |
341 | #define JCR_SECTION_NAME ".jcr" | |
342 | #endif | |
343 | #endif | |
344 | ||
adb35797 | 345 | /* This decision to use a .jcr section can be overridden by defining |
e50e6b88 DS |
346 | USE_JCR_SECTION to 0 in target file. This is necessary if target |
347 | can define JCR_SECTION_NAME but does not have crtstuff or | |
348 | linker support for .jcr section. */ | |
349 | #ifndef TARGET_USE_JCR_SECTION | |
350 | #ifdef JCR_SECTION_NAME | |
351 | #define TARGET_USE_JCR_SECTION 1 | |
352 | #else | |
353 | #define TARGET_USE_JCR_SECTION 0 | |
354 | #endif | |
355 | #endif | |
356 | ||
c478efd1 GDR |
357 | /* Number of hardware registers that go into the DWARF-2 unwind info. |
358 | If not defined, equals FIRST_PSEUDO_REGISTER */ | |
359 | ||
360 | #ifndef DWARF_FRAME_REGISTERS | |
361 | #define DWARF_FRAME_REGISTERS FIRST_PSEUDO_REGISTER | |
362 | #endif | |
d8ea8f28 | 363 | |
4617e3b5 KG |
364 | /* How to renumber registers for dbx and gdb. If not defined, assume |
365 | no renumbering is necessary. */ | |
366 | ||
367 | #ifndef DBX_REGISTER_NUMBER | |
368 | #define DBX_REGISTER_NUMBER(REGNO) (REGNO) | |
369 | #endif | |
370 | ||
d8ea8f28 ZW |
371 | /* Default sizes for base C types. If the sizes are different for |
372 | your target, you should override these values by defining the | |
373 | appropriate symbols in your tm.h file. */ | |
374 | ||
5c60f03d KG |
375 | #ifndef BITS_PER_UNIT |
376 | #define BITS_PER_UNIT 8 | |
377 | #endif | |
378 | ||
e81dd381 KG |
379 | #ifndef BITS_PER_WORD |
380 | #define BITS_PER_WORD (BITS_PER_UNIT * UNITS_PER_WORD) | |
381 | #endif | |
382 | ||
d8ea8f28 ZW |
383 | #ifndef CHAR_TYPE_SIZE |
384 | #define CHAR_TYPE_SIZE BITS_PER_UNIT | |
385 | #endif | |
386 | ||
609688f3 JM |
387 | #ifndef BOOL_TYPE_SIZE |
388 | /* `bool' has size and alignment `1', on almost all platforms. */ | |
389 | #define BOOL_TYPE_SIZE CHAR_TYPE_SIZE | |
390 | #endif | |
391 | ||
d8ea8f28 ZW |
392 | #ifndef SHORT_TYPE_SIZE |
393 | #define SHORT_TYPE_SIZE (BITS_PER_UNIT * MIN ((UNITS_PER_WORD + 1) / 2, 2)) | |
394 | #endif | |
395 | ||
396 | #ifndef INT_TYPE_SIZE | |
397 | #define INT_TYPE_SIZE BITS_PER_WORD | |
398 | #endif | |
399 | ||
400 | #ifndef LONG_TYPE_SIZE | |
401 | #define LONG_TYPE_SIZE BITS_PER_WORD | |
402 | #endif | |
403 | ||
404 | #ifndef LONG_LONG_TYPE_SIZE | |
405 | #define LONG_LONG_TYPE_SIZE (BITS_PER_WORD * 2) | |
406 | #endif | |
407 | ||
408 | #ifndef WCHAR_TYPE_SIZE | |
409 | #define WCHAR_TYPE_SIZE INT_TYPE_SIZE | |
410 | #endif | |
411 | ||
d8ea8f28 ZW |
412 | #ifndef FLOAT_TYPE_SIZE |
413 | #define FLOAT_TYPE_SIZE BITS_PER_WORD | |
414 | #endif | |
415 | ||
416 | #ifndef DOUBLE_TYPE_SIZE | |
417 | #define DOUBLE_TYPE_SIZE (BITS_PER_WORD * 2) | |
418 | #endif | |
419 | ||
420 | #ifndef LONG_DOUBLE_TYPE_SIZE | |
421 | #define LONG_DOUBLE_TYPE_SIZE (BITS_PER_WORD * 2) | |
422 | #endif | |
423 | ||
2465bf76 KG |
424 | /* Width in bits of a pointer. Mind the value of the macro `Pmode'. */ |
425 | #ifndef POINTER_SIZE | |
426 | #define POINTER_SIZE BITS_PER_WORD | |
427 | #endif | |
428 | ||
848e0190 JH |
429 | #ifndef PIC_OFFSET_TABLE_REGNUM |
430 | #define PIC_OFFSET_TABLE_REGNUM INVALID_REGNUM | |
431 | #endif | |
432 | ||
b2ca3702 MM |
433 | #ifndef TARGET_DLLIMPORT_DECL_ATTRIBUTES |
434 | #define TARGET_DLLIMPORT_DECL_ATTRIBUTES 0 | |
435 | #endif | |
436 | ||
63c5b495 | 437 | #ifndef TARGET_DECLSPEC |
b2ca3702 | 438 | #if TARGET_DLLIMPORT_DECL_ATTRIBUTES |
63c5b495 MM |
439 | /* If the target supports the "dllimport" attribute, users are |
440 | probably used to the "__declspec" syntax. */ | |
441 | #define TARGET_DECLSPEC 1 | |
442 | #else | |
443 | #define TARGET_DECLSPEC 0 | |
444 | #endif | |
445 | #endif | |
446 | ||
a9374841 MM |
447 | /* By default, the preprocessor should be invoked the same way in C++ |
448 | as in C. */ | |
449 | #ifndef CPLUSPLUS_CPP_SPEC | |
450 | #ifdef CPP_SPEC | |
451 | #define CPLUSPLUS_CPP_SPEC CPP_SPEC | |
452 | #endif | |
453 | #endif | |
454 | ||
bf501a65 RH |
455 | #ifndef ACCUMULATE_OUTGOING_ARGS |
456 | #define ACCUMULATE_OUTGOING_ARGS 0 | |
457 | #endif | |
458 | ||
459 | /* Supply a default definition for PUSH_ARGS. */ | |
460 | #ifndef PUSH_ARGS | |
461 | #ifdef PUSH_ROUNDING | |
462 | #define PUSH_ARGS !ACCUMULATE_OUTGOING_ARGS | |
463 | #else | |
464 | #define PUSH_ARGS 0 | |
465 | #endif | |
466 | #endif | |
467 | ||
9d6bef95 JM |
468 | /* Decide whether a function's arguments should be processed |
469 | from first to last or from last to first. | |
470 | ||
471 | They should if the stack and args grow in opposite directions, but | |
472 | only if we have push insns. */ | |
473 | ||
474 | #ifdef PUSH_ROUNDING | |
475 | ||
476 | #ifndef PUSH_ARGS_REVERSED | |
477 | #if defined (STACK_GROWS_DOWNWARD) != defined (ARGS_GROW_DOWNWARD) | |
478 | #define PUSH_ARGS_REVERSED PUSH_ARGS | |
479 | #endif | |
480 | #endif | |
481 | ||
482 | #endif | |
483 | ||
484 | #ifndef PUSH_ARGS_REVERSED | |
485 | #define PUSH_ARGS_REVERSED 0 | |
486 | #endif | |
487 | ||
31cdd499 ZW |
488 | /* If PREFERRED_STACK_BOUNDARY is not defined, set it to STACK_BOUNDARY. |
489 | STACK_BOUNDARY is required. */ | |
490 | #ifndef PREFERRED_STACK_BOUNDARY | |
491 | #define PREFERRED_STACK_BOUNDARY STACK_BOUNDARY | |
492 | #endif | |
493 | ||
467cecf3 JB |
494 | #ifndef TARGET_DEFAULT_PACK_STRUCT |
495 | #define TARGET_DEFAULT_PACK_STRUCT 0 | |
496 | #endif | |
497 | ||
67231816 | 498 | /* By default, the C++ compiler will use function addresses in the |
cc2902df | 499 | vtable entries. Setting this nonzero tells the compiler to use |
67231816 | 500 | function descriptors instead. The value of this macro says how |
f676971a | 501 | many words wide the descriptor is (normally 2). It is assumed |
67231816 RH |
502 | that the address of a function descriptor may be treated as a |
503 | pointer to a function. */ | |
504 | #ifndef TARGET_VTABLE_USES_DESCRIPTORS | |
505 | #define TARGET_VTABLE_USES_DESCRIPTORS 0 | |
506 | #endif | |
507 | ||
a6f5e048 RH |
508 | /* By default, the vtable entries are void pointers, the so the alignment |
509 | is the same as pointer alignment. The value of this macro specifies | |
510 | the alignment of the vtable entry in bits. It should be defined only | |
4b7e68e7 | 511 | when special alignment is necessary. */ |
a6f5e048 RH |
512 | #ifndef TARGET_VTABLE_ENTRY_ALIGN |
513 | #define TARGET_VTABLE_ENTRY_ALIGN POINTER_SIZE | |
514 | #endif | |
515 | ||
516 | /* There are a few non-descriptor entries in the vtable at offsets below | |
517 | zero. If these entries must be padded (say, to preserve the alignment | |
518 | specified by TARGET_VTABLE_ENTRY_ALIGN), set this to the number of | |
519 | words in each data entry. */ | |
520 | #ifndef TARGET_VTABLE_DATA_ENTRY_DISTANCE | |
521 | #define TARGET_VTABLE_DATA_ENTRY_DISTANCE 1 | |
522 | #endif | |
523 | ||
4a77e08c DS |
524 | /* Decide whether it is safe to use a local alias for a virtual function |
525 | when constructing thunks. */ | |
526 | #ifndef TARGET_USE_LOCAL_THUNK_ALIAS_P | |
527 | #ifdef ASM_OUTPUT_DEF | |
528 | #define TARGET_USE_LOCAL_THUNK_ALIAS_P(DECL) 1 | |
529 | #else | |
530 | #define TARGET_USE_LOCAL_THUNK_ALIAS_P(DECL) 0 | |
531 | #endif | |
532 | #endif | |
533 | ||
2a1ee410 RH |
534 | /* Select a format to encode pointers in exception handling data. We |
535 | prefer those that result in fewer dynamic relocations. Assume no | |
536 | special support here and encode direct references. */ | |
537 | #ifndef ASM_PREFERRED_EH_DATA_FORMAT | |
538 | #define ASM_PREFERRED_EH_DATA_FORMAT(CODE,GLOBAL) DW_EH_PE_absptr | |
539 | #endif | |
540 | ||
f3c55c97 AO |
541 | /* By default, the C++ compiler will use the lowest bit of the pointer |
542 | to function to indicate a pointer-to-member-function points to a | |
543 | virtual member function. However, if FUNCTION_BOUNDARY indicates | |
544 | function addresses aren't always even, the lowest bit of the delta | |
545 | field will be used. */ | |
546 | #ifndef TARGET_PTRMEMFUNC_VBIT_LOCATION | |
547 | #define TARGET_PTRMEMFUNC_VBIT_LOCATION \ | |
548 | (FUNCTION_BOUNDARY >= 2 * BITS_PER_UNIT \ | |
549 | ? ptrmemfunc_vbit_in_pfn : ptrmemfunc_vbit_in_delta) | |
550 | #endif | |
551 | ||
5f0e9ea2 GK |
552 | #ifndef DEFAULT_GDB_EXTENSIONS |
553 | #define DEFAULT_GDB_EXTENSIONS 1 | |
554 | #endif | |
555 | ||
556 | /* If more than one debugging type is supported, you must define | |
f8ca7e49 | 557 | PREFERRED_DEBUGGING_TYPE to choose the default. */ |
5f0e9ea2 | 558 | |
f8ca7e49 ZW |
559 | #if 1 < (defined (DBX_DEBUGGING_INFO) + defined (SDB_DEBUGGING_INFO) \ |
560 | + defined (DWARF2_DEBUGGING_INFO) + defined (XCOFF_DEBUGGING_INFO) \ | |
561 | + defined (VMS_DEBUGGING_INFO)) | |
5f0e9ea2 | 562 | #ifndef PREFERRED_DEBUGGING_TYPE |
f8ca7e49 | 563 | #error You must define PREFERRED_DEBUGGING_TYPE |
5f0e9ea2 | 564 | #endif /* no PREFERRED_DEBUGGING_TYPE */ |
f8ca7e49 ZW |
565 | |
566 | /* If only one debugging format is supported, define PREFERRED_DEBUGGING_TYPE | |
567 | here so other code needn't care. */ | |
568 | #elif defined DBX_DEBUGGING_INFO | |
5f0e9ea2 | 569 | #define PREFERRED_DEBUGGING_TYPE DBX_DEBUG |
f8ca7e49 ZW |
570 | |
571 | #elif defined SDB_DEBUGGING_INFO | |
5f0e9ea2 | 572 | #define PREFERRED_DEBUGGING_TYPE SDB_DEBUG |
f8ca7e49 ZW |
573 | |
574 | #elif defined DWARF2_DEBUGGING_INFO | |
5f0e9ea2 | 575 | #define PREFERRED_DEBUGGING_TYPE DWARF2_DEBUG |
f8ca7e49 ZW |
576 | |
577 | #elif defined VMS_DEBUGGING_INFO | |
7a0c8d71 | 578 | #define PREFERRED_DEBUGGING_TYPE VMS_AND_DWARF2_DEBUG |
f8ca7e49 ZW |
579 | |
580 | #elif defined XCOFF_DEBUGGING_INFO | |
5f0e9ea2 | 581 | #define PREFERRED_DEBUGGING_TYPE XCOFF_DEBUG |
5f0e9ea2 | 582 | |
f8ca7e49 ZW |
583 | #else |
584 | /* No debugging format is supported by this target. */ | |
5f0e9ea2 GK |
585 | #define PREFERRED_DEBUGGING_TYPE NO_DEBUG |
586 | #endif | |
587 | ||
66d93b5a RH |
588 | /* Define codes for all the float formats that we know of. */ |
589 | #define UNKNOWN_FLOAT_FORMAT 0 | |
590 | #define IEEE_FLOAT_FORMAT 1 | |
591 | #define VAX_FLOAT_FORMAT 2 | |
592 | #define IBM_FLOAT_FORMAT 3 | |
593 | #define C4X_FLOAT_FORMAT 4 | |
594 | ||
595 | /* Default to IEEE float if not specified. Nearly all machines use it. */ | |
596 | #ifndef TARGET_FLOAT_FORMAT | |
597 | #define TARGET_FLOAT_FORMAT IEEE_FLOAT_FORMAT | |
598 | #endif | |
599 | ||
888d2cd6 DJ |
600 | /* Some macros can be defined by the backend in either a mode-dependent |
601 | or mode-independent form. The compiler proper should only use the | |
602 | mode-dependent form, providing VOIDmode when the mode is unknown. | |
603 | We can't poison the macros because the backend may reference them. */ | |
604 | ||
605 | #ifndef REGNO_MODE_OK_FOR_BASE_P | |
606 | #define REGNO_MODE_OK_FOR_BASE_P(REGNO, MODE) REGNO_OK_FOR_BASE_P (REGNO) | |
607 | #endif | |
608 | ||
609 | #ifndef REG_MODE_OK_FOR_BASE_P | |
610 | #define REG_MODE_OK_FOR_BASE_P(REG, MODE) REG_OK_FOR_BASE_P (REG) | |
611 | #endif | |
612 | ||
3dcc68a4 NC |
613 | /* Determine the register class for registers suitable to be the base |
614 | address register in a MEM. Allow the choice to be dependent upon | |
615 | the mode of the memory access. */ | |
616 | #ifndef MODE_BASE_REG_CLASS | |
617 | #define MODE_BASE_REG_CLASS(MODE) BASE_REG_CLASS | |
618 | #endif | |
619 | ||
888d2cd6 DJ |
620 | /* Some machines require a different base register class if the index |
621 | is a register. By default, assume that a base register is acceptable. */ | |
622 | #ifndef MODE_BASE_REG_REG_CLASS | |
623 | #define MODE_BASE_REG_REG_CLASS(MODE) MODE_BASE_REG_CLASS(MODE) | |
624 | #endif | |
625 | ||
626 | #ifndef REGNO_MODE_OK_FOR_REG_BASE_P | |
627 | #define REGNO_MODE_OK_FOR_REG_BASE_P(REGNO, MODE) REGNO_MODE_OK_FOR_BASE_P (REGNO, MODE) | |
628 | #endif | |
629 | ||
630 | #ifndef REG_MODE_OK_FOR_REG_BASE_P | |
631 | #define REG_MODE_OK_FOR_REG_BASE_P(REGNO, MODE) REG_MODE_OK_FOR_BASE_P (REGNO, MODE) | |
632 | #endif | |
633 | ||
3fcaac1d RS |
634 | #ifndef LARGEST_EXPONENT_IS_NORMAL |
635 | #define LARGEST_EXPONENT_IS_NORMAL(SIZE) 0 | |
636 | #endif | |
637 | ||
638 | #ifndef ROUND_TOWARDS_ZERO | |
639 | #define ROUND_TOWARDS_ZERO 0 | |
640 | #endif | |
641 | ||
71925bc0 | 642 | #ifndef MODE_HAS_NANS |
3fcaac1d RS |
643 | #define MODE_HAS_NANS(MODE) \ |
644 | (FLOAT_MODE_P (MODE) \ | |
645 | && TARGET_FLOAT_FORMAT == IEEE_FLOAT_FORMAT \ | |
646 | && !LARGEST_EXPONENT_IS_NORMAL (GET_MODE_BITSIZE (MODE))) | |
71925bc0 RS |
647 | #endif |
648 | ||
649 | #ifndef MODE_HAS_INFINITIES | |
3fcaac1d RS |
650 | #define MODE_HAS_INFINITIES(MODE) \ |
651 | (FLOAT_MODE_P (MODE) \ | |
652 | && TARGET_FLOAT_FORMAT == IEEE_FLOAT_FORMAT \ | |
653 | && !LARGEST_EXPONENT_IS_NORMAL (GET_MODE_BITSIZE (MODE))) | |
71925bc0 RS |
654 | #endif |
655 | ||
656 | #ifndef MODE_HAS_SIGNED_ZEROS | |
657 | #define MODE_HAS_SIGNED_ZEROS(MODE) \ | |
658 | (FLOAT_MODE_P (MODE) && TARGET_FLOAT_FORMAT == IEEE_FLOAT_FORMAT) | |
659 | #endif | |
660 | ||
661 | #ifndef MODE_HAS_SIGN_DEPENDENT_ROUNDING | |
3fcaac1d RS |
662 | #define MODE_HAS_SIGN_DEPENDENT_ROUNDING(MODE) \ |
663 | (FLOAT_MODE_P (MODE) \ | |
664 | && TARGET_FLOAT_FORMAT == IEEE_FLOAT_FORMAT \ | |
665 | && !ROUND_TOWARDS_ZERO) | |
71925bc0 RS |
666 | #endif |
667 | ||
c15c90bb ZW |
668 | #ifndef FLOAT_LIB_COMPARE_RETURNS_BOOL |
669 | #define FLOAT_LIB_COMPARE_RETURNS_BOOL(MODE, COMPARISON) false | |
670 | #endif | |
671 | ||
6cb38cd4 | 672 | /* True if the targets integer-comparison functions return { 0, 1, 2 |
b3f8d95d MM |
673 | } to indicate { <, ==, > }. False if { -1, 0, 1 } is used |
674 | instead. The libgcc routines are biased. */ | |
675 | #ifndef TARGET_LIB_INT_CMP_BIASED | |
676 | #define TARGET_LIB_INT_CMP_BIASED (true) | |
677 | #endif | |
678 | ||
2d295af5 ZW |
679 | /* If FLOAT_WORDS_BIG_ENDIAN is not defined in the header files, |
680 | then the word-endianness is the same as for integers. */ | |
efdc7e19 RH |
681 | #ifndef FLOAT_WORDS_BIG_ENDIAN |
682 | #define FLOAT_WORDS_BIG_ENDIAN WORDS_BIG_ENDIAN | |
683 | #endif | |
684 | ||
d57a4b98 RH |
685 | #ifndef TARGET_FLT_EVAL_METHOD |
686 | #define TARGET_FLT_EVAL_METHOD 0 | |
687 | #endif | |
688 | ||
194734e9 | 689 | #ifndef HOT_TEXT_SECTION_NAME |
3a4bdd05 | 690 | #define HOT_TEXT_SECTION_NAME ".text.hot" |
194734e9 JH |
691 | #endif |
692 | ||
693 | #ifndef UNLIKELY_EXECUTED_TEXT_SECTION_NAME | |
3a4bdd05 | 694 | #define UNLIKELY_EXECUTED_TEXT_SECTION_NAME ".text.unlikely" |
194734e9 JH |
695 | #endif |
696 | ||
750054a2 CT |
697 | #ifndef HAS_LONG_COND_BRANCH |
698 | #define HAS_LONG_COND_BRANCH 0 | |
699 | #endif | |
700 | ||
701 | #ifndef HAS_LONG_UNCOND_BRANCH | |
702 | #define HAS_LONG_UNCOND_BRANCH 0 | |
703 | #endif | |
704 | ||
79fe1b3b DN |
705 | #ifndef UNITS_PER_SIMD_WORD |
706 | #define UNITS_PER_SIMD_WORD 0 | |
707 | #endif | |
708 | ||
4bafaa6f | 709 | /* Determine whether __cxa_atexit, rather than atexit, is used to |
4b7e68e7 | 710 | register C++ destructors for local statics and global objects. */ |
4bafaa6f L |
711 | #ifndef DEFAULT_USE_CXA_ATEXIT |
712 | #define DEFAULT_USE_CXA_ATEXIT 0 | |
713 | #endif | |
714 | ||
ccfc6cc8 UW |
715 | /* Determine whether extra constraint letter should be handled |
716 | via address reload (like 'o'). */ | |
717 | #ifndef EXTRA_MEMORY_CONSTRAINT | |
97488870 | 718 | #define EXTRA_MEMORY_CONSTRAINT(C,STR) 0 |
ccfc6cc8 UW |
719 | #endif |
720 | ||
721 | /* Determine whether extra constraint letter should be handled | |
722 | as an address (like 'p'). */ | |
723 | #ifndef EXTRA_ADDRESS_CONSTRAINT | |
97488870 R |
724 | #define EXTRA_ADDRESS_CONSTRAINT(C,STR) 0 |
725 | #endif | |
726 | ||
727 | /* When a port defines CONSTRAINT_LEN, it should use DEFAULT_CONSTRAINT_LEN | |
728 | for all the characters that it does not want to change, so things like the | |
729 | 'length' of a digit in a matching constraint is an implementation detail, | |
730 | and not part of the interface. */ | |
731 | #define DEFAULT_CONSTRAINT_LEN(C,STR) 1 | |
732 | ||
733 | #ifndef CONSTRAINT_LEN | |
734 | #define CONSTRAINT_LEN(C,STR) DEFAULT_CONSTRAINT_LEN (C, STR) | |
735 | #endif | |
736 | ||
737 | #if defined (CONST_OK_FOR_LETTER_P) && ! defined (CONST_OK_FOR_CONSTRAINT_P) | |
738 | #define CONST_OK_FOR_CONSTRAINT_P(VAL,C,STR) CONST_OK_FOR_LETTER_P (VAL, C) | |
739 | #endif | |
740 | ||
741 | #if defined (CONST_DOUBLE_OK_FOR_LETTER_P) && ! defined (CONST_DOUBLE_OK_FOR_CONSTRAINT_P) | |
742 | #define CONST_DOUBLE_OK_FOR_CONSTRAINT_P(OP,C,STR) \ | |
743 | CONST_DOUBLE_OK_FOR_LETTER_P (OP, C) | |
744 | #endif | |
745 | ||
3ff5ef1b | 746 | #ifndef REG_CLASS_FROM_CONSTRAINT |
97488870 | 747 | #define REG_CLASS_FROM_CONSTRAINT(C,STR) REG_CLASS_FROM_LETTER (C) |
3ff5ef1b | 748 | #endif |
97488870 R |
749 | |
750 | #if defined (EXTRA_CONSTRAINT) && ! defined (EXTRA_CONSTRAINT_STR) | |
751 | #define EXTRA_CONSTRAINT_STR(OP, C,STR) EXTRA_CONSTRAINT (OP, C) | |
ccfc6cc8 UW |
752 | #endif |
753 | ||
37706dd1 HPN |
754 | #ifndef REGISTER_MOVE_COST |
755 | #define REGISTER_MOVE_COST(m, x, y) 2 | |
756 | #endif | |
757 | ||
272f51a3 JH |
758 | /* Determine whether the the entire c99 runtime |
759 | is present in the runtime library. */ | |
760 | #ifndef TARGET_C99_FUNCTIONS | |
761 | #define TARGET_C99_FUNCTIONS 0 | |
762 | #endif | |
763 | ||
7dba8395 | 764 | /* Indicate that CLZ and CTZ are undefined at zero. */ |
f676971a | 765 | #ifndef CLZ_DEFINED_VALUE_AT_ZERO |
7dba8395 RH |
766 | #define CLZ_DEFINED_VALUE_AT_ZERO(MODE, VALUE) 0 |
767 | #endif | |
f676971a | 768 | #ifndef CTZ_DEFINED_VALUE_AT_ZERO |
7dba8395 RH |
769 | #define CTZ_DEFINED_VALUE_AT_ZERO(MODE, VALUE) 0 |
770 | #endif | |
771 | ||
06f31100 RS |
772 | /* Provide a default value for STORE_FLAG_VALUE. */ |
773 | #ifndef STORE_FLAG_VALUE | |
774 | #define STORE_FLAG_VALUE 1 | |
775 | #endif | |
776 | ||
436bcda1 GK |
777 | /* This macro is used to determine what the largest unit size that |
778 | move_by_pieces can use is. */ | |
779 | ||
780 | /* MOVE_MAX_PIECES is the number of bytes at a time which we can | |
781 | move efficiently, as opposed to MOVE_MAX which is the maximum | |
782 | number of bytes we can move with a single instruction. */ | |
783 | ||
784 | #ifndef MOVE_MAX_PIECES | |
785 | #define MOVE_MAX_PIECES MOVE_MAX | |
786 | #endif | |
787 | ||
a594a19c GK |
788 | #ifndef STACK_POINTER_OFFSET |
789 | #define STACK_POINTER_OFFSET 0 | |
790 | #endif | |
791 | ||
cca8fb0e KH |
792 | #ifndef LOCAL_REGNO |
793 | #define LOCAL_REGNO(REGNO) 0 | |
794 | #endif | |
795 | ||
9d05bbce KH |
796 | /* EXIT_IGNORE_STACK should be nonzero if, when returning from a function, |
797 | the stack pointer does not matter. The value is tested only in | |
798 | functions that have frame pointers. */ | |
799 | #ifndef EXIT_IGNORE_STACK | |
800 | #define EXIT_IGNORE_STACK 0 | |
801 | #endif | |
802 | ||
0ede749d KH |
803 | /* Assume that case vectors are not pc-relative. */ |
804 | #ifndef CASE_VECTOR_PC_RELATIVE | |
805 | #define CASE_VECTOR_PC_RELATIVE 0 | |
806 | #endif | |
807 | ||
6de9cd9a DN |
808 | /* Assume that trampolines need function alignment. */ |
809 | #ifndef TRAMPOLINE_ALIGNMENT | |
810 | #define TRAMPOLINE_ALIGNMENT FUNCTION_BOUNDARY | |
811 | #endif | |
812 | ||
d220de0e KH |
813 | /* Register mappings for target machines without register windows. */ |
814 | #ifndef INCOMING_REGNO | |
815 | #define INCOMING_REGNO(N) (N) | |
816 | #endif | |
817 | ||
818 | #ifndef OUTGOING_REGNO | |
819 | #define OUTGOING_REGNO(N) (N) | |
820 | #endif | |
821 | ||
bee07d3f KH |
822 | #ifndef SHIFT_COUNT_TRUNCATED |
823 | #define SHIFT_COUNT_TRUNCATED 0 | |
824 | #endif | |
825 | ||
3e759eda KH |
826 | #ifndef LEGITIMIZE_ADDRESS |
827 | #define LEGITIMIZE_ADDRESS(X, OLDX, MODE, WIN) | |
828 | #endif | |
829 | ||
2e4e72b1 ZW |
830 | #ifndef LEGITIMATE_PIC_OPERAND_P |
831 | #define LEGITIMATE_PIC_OPERAND_P(X) 1 | |
832 | #endif | |
833 | ||
1f8551b2 KH |
834 | #ifndef REVERSIBLE_CC_MODE |
835 | #define REVERSIBLE_CC_MODE(MODE) 0 | |
836 | #endif | |
837 | ||
07e15286 DE |
838 | /* Biggest alignment supported by the object file format of this machine. */ |
839 | #ifndef MAX_OFILE_ALIGNMENT | |
840 | #define MAX_OFILE_ALIGNMENT BIGGEST_ALIGNMENT | |
841 | #endif | |
842 | ||
88657302 | 843 | #endif /* ! GCC_DEFAULTS_H */ |