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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 | 20 | along with GCC; see the file COPYING. If not, write to the Free |
366ccddb KC |
21 | Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA |
22 | 02110-1301, 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 | ||
e0a21ab9 | 64 | /* Choose a reasonable default for ASM_OUTPUT_ASCII. */ |
c53a8ab6 RS |
65 | |
66 | #ifndef ASM_OUTPUT_ASCII | |
67 | #define ASM_OUTPUT_ASCII(MYFILE, MYSTRING, MYLENGTH) \ | |
68 | do { \ | |
69 | FILE *_hide_asm_out_file = (MYFILE); \ | |
47ee9bcb | 70 | const unsigned char *_hide_p = (const unsigned char *) (MYSTRING); \ |
c53a8ab6 RS |
71 | int _hide_thissize = (MYLENGTH); \ |
72 | { \ | |
73 | FILE *asm_out_file = _hide_asm_out_file; \ | |
47ee9bcb | 74 | const unsigned char *p = _hide_p; \ |
c53a8ab6 RS |
75 | int thissize = _hide_thissize; \ |
76 | int i; \ | |
77 | fprintf (asm_out_file, "\t.ascii \""); \ | |
78 | \ | |
79 | for (i = 0; i < thissize; i++) \ | |
80 | { \ | |
b3694847 | 81 | int c = p[i]; \ |
c53a8ab6 RS |
82 | if (c == '\"' || c == '\\') \ |
83 | putc ('\\', asm_out_file); \ | |
5f6d3823 | 84 | if (ISPRINT(c)) \ |
c53a8ab6 RS |
85 | putc (c, asm_out_file); \ |
86 | else \ | |
87 | { \ | |
88 | fprintf (asm_out_file, "\\%o", c); \ | |
89 | /* After an octal-escape, if a digit follows, \ | |
90 | terminate one string constant and start another. \ | |
8aeea6e6 | 91 | The VAX assembler fails to stop reading the escape \ |
c53a8ab6 RS |
92 | after three digits, so this is the only way we \ |
93 | can get it to parse the data properly. */ \ | |
d07ecc3b | 94 | if (i < thissize - 1 && ISDIGIT(p[i + 1])) \ |
c53a8ab6 RS |
95 | fprintf (asm_out_file, "\"\n\t.ascii \""); \ |
96 | } \ | |
97 | } \ | |
98 | fprintf (asm_out_file, "\"\n"); \ | |
99 | } \ | |
100 | } \ | |
101 | while (0) | |
102 | #endif | |
d0d4af87 | 103 | |
650f773a JW |
104 | /* This is how we tell the assembler to equate two values. */ |
105 | #ifdef SET_ASM_OP | |
106 | #ifndef ASM_OUTPUT_DEF | |
107 | #define ASM_OUTPUT_DEF(FILE,LABEL1,LABEL2) \ | |
e8638df0 | 108 | do { fprintf ((FILE), "%s", SET_ASM_OP); \ |
650f773a JW |
109 | assemble_name (FILE, LABEL1); \ |
110 | fprintf (FILE, ","); \ | |
111 | assemble_name (FILE, LABEL2); \ | |
112 | fprintf (FILE, "\n"); \ | |
113 | } while (0) | |
114 | #endif | |
115 | #endif | |
daefd78b | 116 | |
083b6717 JDA |
117 | /* Decide whether to defer emitting the assembler output for an equate |
118 | of two values. The default is to not defer output. */ | |
119 | #ifndef TARGET_DEFERRED_OUTPUT_DEFS | |
120 | #define TARGET_DEFERRED_OUTPUT_DEFS(DECL,TARGET) false | |
121 | #endif | |
122 | ||
4ad5e05d KG |
123 | /* This is how to output the definition of a user-level label named |
124 | NAME, such as the label on a static function or variable NAME. */ | |
125 | ||
126 | #ifndef ASM_OUTPUT_LABEL | |
127 | #define ASM_OUTPUT_LABEL(FILE,NAME) \ | |
128 | do { assemble_name ((FILE), (NAME)); fputs (":\n", (FILE)); } while (0) | |
129 | #endif | |
130 | ||
57829bc4 MM |
131 | /* Output the definition of a compiler-generated label named NAME. */ |
132 | #ifndef ASM_OUTPUT_INTERNAL_LABEL | |
133 | #define ASM_OUTPUT_INTERNAL_LABEL(FILE,NAME) \ | |
134 | do { \ | |
135 | assemble_name_raw ((FILE), (NAME)); \ | |
136 | fputs (":\n", (FILE)); \ | |
137 | } while (0) | |
138 | #endif | |
139 | ||
81d77cda RK |
140 | /* This is how to output a reference to a user-level label named NAME. */ |
141 | ||
142 | #ifndef ASM_OUTPUT_LABELREF | |
19283265 | 143 | #define ASM_OUTPUT_LABELREF(FILE,NAME) asm_fprintf ((FILE), "%U%s", (NAME)) |
81d77cda RK |
144 | #endif |
145 | ||
8215347e JW |
146 | /* Allow target to print debug info labels specially. This is useful for |
147 | VLIW targets, since debug info labels should go into the middle of | |
148 | instruction bundles instead of breaking them. */ | |
149 | ||
150 | #ifndef ASM_OUTPUT_DEBUG_LABEL | |
151 | #define ASM_OUTPUT_DEBUG_LABEL(FILE, PREFIX, NUM) \ | |
4977bab6 | 152 | (*targetm.asm_out.internal_label) (FILE, PREFIX, NUM) |
8215347e JW |
153 | #endif |
154 | ||
3aa8ab7b | 155 | /* This is how we tell the assembler that a symbol is weak. */ |
20c93f7c RO |
156 | #ifndef ASM_OUTPUT_WEAK_ALIAS |
157 | #if defined (ASM_WEAKEN_LABEL) && defined (ASM_OUTPUT_DEF) | |
3aa8ab7b L |
158 | #define ASM_OUTPUT_WEAK_ALIAS(STREAM, NAME, VALUE) \ |
159 | do \ | |
160 | { \ | |
161 | ASM_WEAKEN_LABEL (STREAM, NAME); \ | |
162 | if (VALUE) \ | |
163 | ASM_OUTPUT_DEF (STREAM, NAME, VALUE); \ | |
164 | } \ | |
165 | while (0) | |
166 | #endif | |
20c93f7c | 167 | #endif |
3aa8ab7b | 168 | |
2be2ac70 ZW |
169 | /* How to emit a .type directive. */ |
170 | #ifndef ASM_OUTPUT_TYPE_DIRECTIVE | |
171 | #if defined TYPE_ASM_OP && defined TYPE_OPERAND_FMT | |
172 | #define ASM_OUTPUT_TYPE_DIRECTIVE(STREAM, NAME, TYPE) \ | |
173 | do \ | |
174 | { \ | |
175 | fputs (TYPE_ASM_OP, STREAM); \ | |
176 | assemble_name (STREAM, NAME); \ | |
177 | fputs (", ", STREAM); \ | |
178 | fprintf (STREAM, TYPE_OPERAND_FMT, TYPE); \ | |
179 | putc ('\n', STREAM); \ | |
180 | } \ | |
181 | while (0) | |
182 | #endif | |
183 | #endif | |
184 | ||
185 | /* How to emit a .size directive. */ | |
186 | #ifndef ASM_OUTPUT_SIZE_DIRECTIVE | |
187 | #ifdef SIZE_ASM_OP | |
188 | #define ASM_OUTPUT_SIZE_DIRECTIVE(STREAM, NAME, SIZE) \ | |
189 | do \ | |
190 | { \ | |
191 | HOST_WIDE_INT size_ = (SIZE); \ | |
192 | fputs (SIZE_ASM_OP, STREAM); \ | |
193 | assemble_name (STREAM, NAME); \ | |
90ff44cf | 194 | fprintf (STREAM, ", " HOST_WIDE_INT_PRINT_DEC "\n", size_); \ |
2be2ac70 ZW |
195 | } \ |
196 | while (0) | |
197 | ||
99086d59 | 198 | #define ASM_OUTPUT_MEASURED_SIZE(STREAM, NAME) \ |
2be2ac70 ZW |
199 | do \ |
200 | { \ | |
201 | fputs (SIZE_ASM_OP, STREAM); \ | |
99086d59 ZW |
202 | assemble_name (STREAM, NAME); \ |
203 | fputs (", .-", STREAM); \ | |
204 | assemble_name (STREAM, NAME); \ | |
2be2ac70 ZW |
205 | putc ('\n', STREAM); \ |
206 | } \ | |
207 | while (0) | |
208 | ||
209 | #endif | |
210 | #endif | |
211 | ||
daefd78b JM |
212 | /* This determines whether or not we support weak symbols. */ |
213 | #ifndef SUPPORTS_WEAK | |
79c4e63f | 214 | #if defined (ASM_WEAKEN_LABEL) || defined (ASM_WEAKEN_DECL) |
daefd78b JM |
215 | #define SUPPORTS_WEAK 1 |
216 | #else | |
217 | #define SUPPORTS_WEAK 0 | |
218 | #endif | |
219 | #endif | |
a6ab3aad | 220 | |
1ca894a0 MM |
221 | /* This determines whether or not we support link-once semantics. */ |
222 | #ifndef SUPPORTS_ONE_ONLY | |
223 | #ifdef MAKE_DECL_ONE_ONLY | |
224 | #define SUPPORTS_ONE_ONLY 1 | |
225 | #else | |
226 | #define SUPPORTS_ONE_ONLY 0 | |
227 | #endif | |
228 | #endif | |
229 | ||
0524c91d MA |
230 | /* This determines whether weak symbols must be left out of a static |
231 | archive's table of contents. Defining this macro to be nonzero has | |
232 | the consequence that certain symbols will not be made weak that | |
233 | otherwise would be. The C++ ABI requires this macro to be zero; | |
8c27b7d4 | 234 | see the documentation. */ |
0524c91d MA |
235 | #ifndef TARGET_WEAK_NOT_IN_ARCHIVE_TOC |
236 | #define TARGET_WEAK_NOT_IN_ARCHIVE_TOC 0 | |
4746cf84 MA |
237 | #endif |
238 | ||
ea4b7848 | 239 | /* This determines whether or not we need linkonce unwind information. */ |
4746cf84 MA |
240 | #ifndef TARGET_USES_WEAK_UNWIND_INFO |
241 | #define TARGET_USES_WEAK_UNWIND_INFO 0 | |
242 | #endif | |
243 | ||
d48fd218 ZW |
244 | /* By default, there is no prefix on user-defined symbols. */ |
245 | #ifndef USER_LABEL_PREFIX | |
246 | #define USER_LABEL_PREFIX "" | |
247 | #endif | |
248 | ||
8f08ea1e | 249 | /* If the target supports weak symbols, define TARGET_ATTRIBUTE_WEAK to |
f676971a | 250 | provide a weak attribute. Else define it to nothing. |
8f08ea1e | 251 | |
d02af173 | 252 | This would normally belong in ansidecl.h, but SUPPORTS_WEAK is |
8f08ea1e L |
253 | not available at that time. |
254 | ||
255 | Note, this is only for use by target files which we know are to be | |
256 | compiled by GCC. */ | |
257 | #ifndef TARGET_ATTRIBUTE_WEAK | |
258 | # if SUPPORTS_WEAK | |
259 | # define TARGET_ATTRIBUTE_WEAK __attribute__ ((weak)) | |
260 | # else | |
261 | # define TARGET_ATTRIBUTE_WEAK | |
262 | # endif | |
263 | #endif | |
264 | ||
4746cf84 | 265 | /* Determines whether we may use common symbols to represent one-only |
9cf737f8 | 266 | semantics (a.k.a. "vague linkage"). */ |
4746cf84 MA |
267 | #ifndef USE_COMMON_FOR_ONE_ONLY |
268 | # define USE_COMMON_FOR_ONE_ONLY 1 | |
269 | #endif | |
270 | ||
15072eb1 ZW |
271 | /* By default we can assume that all global symbols are in one namespace, |
272 | across all shared libraries. */ | |
273 | #ifndef MULTIPLE_SYMBOL_SPACES | |
274 | # define MULTIPLE_SYMBOL_SPACES 0 | |
275 | #endif | |
4746cf84 | 276 | |
ea4f1fce JO |
277 | /* If the target supports init_priority C++ attribute, give |
278 | SUPPORTS_INIT_PRIORITY a nonzero value. */ | |
279 | #ifndef SUPPORTS_INIT_PRIORITY | |
280 | #define SUPPORTS_INIT_PRIORITY 1 | |
281 | #endif /* SUPPORTS_INIT_PRIORITY */ | |
282 | ||
5897739e JO |
283 | /* If duplicate library search directories can be removed from a |
284 | linker command without changing the linker's semantics, give this | |
285 | symbol a nonzero. */ | |
286 | #ifndef LINK_ELIMINATE_DUPLICATE_LDIRECTORIES | |
287 | #define LINK_ELIMINATE_DUPLICATE_LDIRECTORIES 0 | |
288 | #endif /* LINK_ELIMINATE_DUPLICATE_LDIRECTORIES */ | |
289 | ||
a6ab3aad JM |
290 | /* If we have a definition of INCOMING_RETURN_ADDR_RTX, assume that |
291 | the rest of the DWARF 2 frame unwind support is also provided. */ | |
0021b564 JM |
292 | #if !defined (DWARF2_UNWIND_INFO) && defined (INCOMING_RETURN_ADDR_RTX) |
293 | #define DWARF2_UNWIND_INFO 1 | |
a6ab3aad | 294 | #endif |
b366352b | 295 | |
2cc07db4 RH |
296 | /* If we have named sections, and we're using crtstuff to run ctors, |
297 | use them for registering eh frame information. */ | |
bc2a8f08 RH |
298 | #if defined (TARGET_ASM_NAMED_SECTION) && DWARF2_UNWIND_INFO \ |
299 | && !defined(EH_FRAME_IN_DATA_SECTION) | |
7c262518 RH |
300 | #ifndef EH_FRAME_SECTION_NAME |
301 | #define EH_FRAME_SECTION_NAME ".eh_frame" | |
302 | #endif | |
31cf0144 JM |
303 | #endif |
304 | ||
1a35e62d MM |
305 | /* On many systems, different EH table encodings are used under |
306 | difference circumstances. Some will require runtime relocations; | |
307 | some will not. For those that do not require runtime relocations, | |
308 | we would like to make the table read-only. However, since the | |
309 | read-only tables may need to be combined with read-write tables | |
310 | that do require runtime relocation, it is not safe to make the | |
311 | tables read-only unless the linker will merge read-only and | |
312 | read-write sections into a single read-write section. If your | |
313 | linker does not have this ability, but your system is such that no | |
314 | encoding used with non-PIC code will ever require a runtime | |
315 | relocation, then you can define EH_TABLES_CAN_BE_READ_ONLY to 1 in | |
316 | your target configuration file. */ | |
317 | #ifndef EH_TABLES_CAN_BE_READ_ONLY | |
318 | #ifdef HAVE_LD_RO_RW_SECTION_MIXING | |
319 | #define EH_TABLES_CAN_BE_READ_ONLY 1 | |
320 | #else | |
321 | #define EH_TABLES_CAN_BE_READ_ONLY 0 | |
322 | #endif | |
323 | #endif | |
324 | ||
6351543d AG |
325 | /* If we have named section and we support weak symbols, then use the |
326 | .jcr section for recording java classes which need to be registered | |
327 | at program start-up time. */ | |
328 | #if defined (TARGET_ASM_NAMED_SECTION) && SUPPORTS_WEAK | |
329 | #ifndef JCR_SECTION_NAME | |
330 | #define JCR_SECTION_NAME ".jcr" | |
331 | #endif | |
332 | #endif | |
333 | ||
adb35797 | 334 | /* This decision to use a .jcr section can be overridden by defining |
e50e6b88 DS |
335 | USE_JCR_SECTION to 0 in target file. This is necessary if target |
336 | can define JCR_SECTION_NAME but does not have crtstuff or | |
337 | linker support for .jcr section. */ | |
338 | #ifndef TARGET_USE_JCR_SECTION | |
339 | #ifdef JCR_SECTION_NAME | |
340 | #define TARGET_USE_JCR_SECTION 1 | |
341 | #else | |
342 | #define TARGET_USE_JCR_SECTION 0 | |
343 | #endif | |
344 | #endif | |
345 | ||
c478efd1 GDR |
346 | /* Number of hardware registers that go into the DWARF-2 unwind info. |
347 | If not defined, equals FIRST_PSEUDO_REGISTER */ | |
348 | ||
349 | #ifndef DWARF_FRAME_REGISTERS | |
350 | #define DWARF_FRAME_REGISTERS FIRST_PSEUDO_REGISTER | |
351 | #endif | |
d8ea8f28 | 352 | |
4617e3b5 KG |
353 | /* How to renumber registers for dbx and gdb. If not defined, assume |
354 | no renumbering is necessary. */ | |
355 | ||
356 | #ifndef DBX_REGISTER_NUMBER | |
357 | #define DBX_REGISTER_NUMBER(REGNO) (REGNO) | |
358 | #endif | |
359 | ||
d8ea8f28 ZW |
360 | /* Default sizes for base C types. If the sizes are different for |
361 | your target, you should override these values by defining the | |
362 | appropriate symbols in your tm.h file. */ | |
363 | ||
5c60f03d KG |
364 | #ifndef BITS_PER_UNIT |
365 | #define BITS_PER_UNIT 8 | |
366 | #endif | |
367 | ||
e81dd381 KG |
368 | #ifndef BITS_PER_WORD |
369 | #define BITS_PER_WORD (BITS_PER_UNIT * UNITS_PER_WORD) | |
370 | #endif | |
371 | ||
d8ea8f28 ZW |
372 | #ifndef CHAR_TYPE_SIZE |
373 | #define CHAR_TYPE_SIZE BITS_PER_UNIT | |
374 | #endif | |
375 | ||
609688f3 JM |
376 | #ifndef BOOL_TYPE_SIZE |
377 | /* `bool' has size and alignment `1', on almost all platforms. */ | |
378 | #define BOOL_TYPE_SIZE CHAR_TYPE_SIZE | |
379 | #endif | |
380 | ||
d8ea8f28 ZW |
381 | #ifndef SHORT_TYPE_SIZE |
382 | #define SHORT_TYPE_SIZE (BITS_PER_UNIT * MIN ((UNITS_PER_WORD + 1) / 2, 2)) | |
383 | #endif | |
384 | ||
385 | #ifndef INT_TYPE_SIZE | |
386 | #define INT_TYPE_SIZE BITS_PER_WORD | |
387 | #endif | |
388 | ||
389 | #ifndef LONG_TYPE_SIZE | |
390 | #define LONG_TYPE_SIZE BITS_PER_WORD | |
391 | #endif | |
392 | ||
393 | #ifndef LONG_LONG_TYPE_SIZE | |
394 | #define LONG_LONG_TYPE_SIZE (BITS_PER_WORD * 2) | |
395 | #endif | |
396 | ||
397 | #ifndef WCHAR_TYPE_SIZE | |
398 | #define WCHAR_TYPE_SIZE INT_TYPE_SIZE | |
399 | #endif | |
400 | ||
d8ea8f28 ZW |
401 | #ifndef FLOAT_TYPE_SIZE |
402 | #define FLOAT_TYPE_SIZE BITS_PER_WORD | |
403 | #endif | |
404 | ||
405 | #ifndef DOUBLE_TYPE_SIZE | |
406 | #define DOUBLE_TYPE_SIZE (BITS_PER_WORD * 2) | |
407 | #endif | |
408 | ||
409 | #ifndef LONG_DOUBLE_TYPE_SIZE | |
410 | #define LONG_DOUBLE_TYPE_SIZE (BITS_PER_WORD * 2) | |
411 | #endif | |
412 | ||
2465bf76 KG |
413 | /* Width in bits of a pointer. Mind the value of the macro `Pmode'. */ |
414 | #ifndef POINTER_SIZE | |
415 | #define POINTER_SIZE BITS_PER_WORD | |
416 | #endif | |
417 | ||
848e0190 JH |
418 | #ifndef PIC_OFFSET_TABLE_REGNUM |
419 | #define PIC_OFFSET_TABLE_REGNUM INVALID_REGNUM | |
420 | #endif | |
421 | ||
b2ca3702 MM |
422 | #ifndef TARGET_DLLIMPORT_DECL_ATTRIBUTES |
423 | #define TARGET_DLLIMPORT_DECL_ATTRIBUTES 0 | |
424 | #endif | |
425 | ||
63c5b495 | 426 | #ifndef TARGET_DECLSPEC |
b2ca3702 | 427 | #if TARGET_DLLIMPORT_DECL_ATTRIBUTES |
63c5b495 MM |
428 | /* If the target supports the "dllimport" attribute, users are |
429 | probably used to the "__declspec" syntax. */ | |
430 | #define TARGET_DECLSPEC 1 | |
431 | #else | |
432 | #define TARGET_DECLSPEC 0 | |
433 | #endif | |
434 | #endif | |
435 | ||
a9374841 MM |
436 | /* By default, the preprocessor should be invoked the same way in C++ |
437 | as in C. */ | |
438 | #ifndef CPLUSPLUS_CPP_SPEC | |
439 | #ifdef CPP_SPEC | |
440 | #define CPLUSPLUS_CPP_SPEC CPP_SPEC | |
441 | #endif | |
442 | #endif | |
443 | ||
bf501a65 RH |
444 | #ifndef ACCUMULATE_OUTGOING_ARGS |
445 | #define ACCUMULATE_OUTGOING_ARGS 0 | |
446 | #endif | |
447 | ||
448 | /* Supply a default definition for PUSH_ARGS. */ | |
449 | #ifndef PUSH_ARGS | |
450 | #ifdef PUSH_ROUNDING | |
451 | #define PUSH_ARGS !ACCUMULATE_OUTGOING_ARGS | |
452 | #else | |
453 | #define PUSH_ARGS 0 | |
454 | #endif | |
455 | #endif | |
456 | ||
9d6bef95 JM |
457 | /* Decide whether a function's arguments should be processed |
458 | from first to last or from last to first. | |
459 | ||
460 | They should if the stack and args grow in opposite directions, but | |
461 | only if we have push insns. */ | |
462 | ||
463 | #ifdef PUSH_ROUNDING | |
464 | ||
465 | #ifndef PUSH_ARGS_REVERSED | |
466 | #if defined (STACK_GROWS_DOWNWARD) != defined (ARGS_GROW_DOWNWARD) | |
467 | #define PUSH_ARGS_REVERSED PUSH_ARGS | |
468 | #endif | |
469 | #endif | |
470 | ||
471 | #endif | |
472 | ||
473 | #ifndef PUSH_ARGS_REVERSED | |
474 | #define PUSH_ARGS_REVERSED 0 | |
475 | #endif | |
476 | ||
31cdd499 ZW |
477 | /* If PREFERRED_STACK_BOUNDARY is not defined, set it to STACK_BOUNDARY. |
478 | STACK_BOUNDARY is required. */ | |
479 | #ifndef PREFERRED_STACK_BOUNDARY | |
480 | #define PREFERRED_STACK_BOUNDARY STACK_BOUNDARY | |
481 | #endif | |
482 | ||
467cecf3 JB |
483 | #ifndef TARGET_DEFAULT_PACK_STRUCT |
484 | #define TARGET_DEFAULT_PACK_STRUCT 0 | |
485 | #endif | |
486 | ||
67231816 | 487 | /* By default, the C++ compiler will use function addresses in the |
cc2902df | 488 | vtable entries. Setting this nonzero tells the compiler to use |
67231816 | 489 | function descriptors instead. The value of this macro says how |
f676971a | 490 | many words wide the descriptor is (normally 2). It is assumed |
67231816 RH |
491 | that the address of a function descriptor may be treated as a |
492 | pointer to a function. */ | |
493 | #ifndef TARGET_VTABLE_USES_DESCRIPTORS | |
494 | #define TARGET_VTABLE_USES_DESCRIPTORS 0 | |
495 | #endif | |
496 | ||
a6f5e048 RH |
497 | /* By default, the vtable entries are void pointers, the so the alignment |
498 | is the same as pointer alignment. The value of this macro specifies | |
499 | the alignment of the vtable entry in bits. It should be defined only | |
4b7e68e7 | 500 | when special alignment is necessary. */ |
a6f5e048 RH |
501 | #ifndef TARGET_VTABLE_ENTRY_ALIGN |
502 | #define TARGET_VTABLE_ENTRY_ALIGN POINTER_SIZE | |
503 | #endif | |
504 | ||
505 | /* There are a few non-descriptor entries in the vtable at offsets below | |
506 | zero. If these entries must be padded (say, to preserve the alignment | |
507 | specified by TARGET_VTABLE_ENTRY_ALIGN), set this to the number of | |
508 | words in each data entry. */ | |
509 | #ifndef TARGET_VTABLE_DATA_ENTRY_DISTANCE | |
510 | #define TARGET_VTABLE_DATA_ENTRY_DISTANCE 1 | |
511 | #endif | |
512 | ||
4a77e08c DS |
513 | /* Decide whether it is safe to use a local alias for a virtual function |
514 | when constructing thunks. */ | |
515 | #ifndef TARGET_USE_LOCAL_THUNK_ALIAS_P | |
516 | #ifdef ASM_OUTPUT_DEF | |
517 | #define TARGET_USE_LOCAL_THUNK_ALIAS_P(DECL) 1 | |
518 | #else | |
519 | #define TARGET_USE_LOCAL_THUNK_ALIAS_P(DECL) 0 | |
520 | #endif | |
521 | #endif | |
522 | ||
2a1ee410 RH |
523 | /* Select a format to encode pointers in exception handling data. We |
524 | prefer those that result in fewer dynamic relocations. Assume no | |
525 | special support here and encode direct references. */ | |
526 | #ifndef ASM_PREFERRED_EH_DATA_FORMAT | |
527 | #define ASM_PREFERRED_EH_DATA_FORMAT(CODE,GLOBAL) DW_EH_PE_absptr | |
528 | #endif | |
529 | ||
f3c55c97 AO |
530 | /* By default, the C++ compiler will use the lowest bit of the pointer |
531 | to function to indicate a pointer-to-member-function points to a | |
532 | virtual member function. However, if FUNCTION_BOUNDARY indicates | |
533 | function addresses aren't always even, the lowest bit of the delta | |
534 | field will be used. */ | |
535 | #ifndef TARGET_PTRMEMFUNC_VBIT_LOCATION | |
536 | #define TARGET_PTRMEMFUNC_VBIT_LOCATION \ | |
537 | (FUNCTION_BOUNDARY >= 2 * BITS_PER_UNIT \ | |
538 | ? ptrmemfunc_vbit_in_pfn : ptrmemfunc_vbit_in_delta) | |
539 | #endif | |
540 | ||
5f0e9ea2 GK |
541 | #ifndef DEFAULT_GDB_EXTENSIONS |
542 | #define DEFAULT_GDB_EXTENSIONS 1 | |
543 | #endif | |
544 | ||
545 | /* If more than one debugging type is supported, you must define | |
f8ca7e49 | 546 | PREFERRED_DEBUGGING_TYPE to choose the default. */ |
5f0e9ea2 | 547 | |
f8ca7e49 ZW |
548 | #if 1 < (defined (DBX_DEBUGGING_INFO) + defined (SDB_DEBUGGING_INFO) \ |
549 | + defined (DWARF2_DEBUGGING_INFO) + defined (XCOFF_DEBUGGING_INFO) \ | |
550 | + defined (VMS_DEBUGGING_INFO)) | |
5f0e9ea2 | 551 | #ifndef PREFERRED_DEBUGGING_TYPE |
f8ca7e49 | 552 | #error You must define PREFERRED_DEBUGGING_TYPE |
5f0e9ea2 | 553 | #endif /* no PREFERRED_DEBUGGING_TYPE */ |
f8ca7e49 ZW |
554 | |
555 | /* If only one debugging format is supported, define PREFERRED_DEBUGGING_TYPE | |
556 | here so other code needn't care. */ | |
557 | #elif defined DBX_DEBUGGING_INFO | |
5f0e9ea2 | 558 | #define PREFERRED_DEBUGGING_TYPE DBX_DEBUG |
f8ca7e49 ZW |
559 | |
560 | #elif defined SDB_DEBUGGING_INFO | |
5f0e9ea2 | 561 | #define PREFERRED_DEBUGGING_TYPE SDB_DEBUG |
f8ca7e49 ZW |
562 | |
563 | #elif defined DWARF2_DEBUGGING_INFO | |
5f0e9ea2 | 564 | #define PREFERRED_DEBUGGING_TYPE DWARF2_DEBUG |
f8ca7e49 ZW |
565 | |
566 | #elif defined VMS_DEBUGGING_INFO | |
7a0c8d71 | 567 | #define PREFERRED_DEBUGGING_TYPE VMS_AND_DWARF2_DEBUG |
f8ca7e49 ZW |
568 | |
569 | #elif defined XCOFF_DEBUGGING_INFO | |
5f0e9ea2 | 570 | #define PREFERRED_DEBUGGING_TYPE XCOFF_DEBUG |
5f0e9ea2 | 571 | |
f8ca7e49 ZW |
572 | #else |
573 | /* No debugging format is supported by this target. */ | |
5f0e9ea2 GK |
574 | #define PREFERRED_DEBUGGING_TYPE NO_DEBUG |
575 | #endif | |
576 | ||
66d93b5a RH |
577 | /* Define codes for all the float formats that we know of. */ |
578 | #define UNKNOWN_FLOAT_FORMAT 0 | |
579 | #define IEEE_FLOAT_FORMAT 1 | |
580 | #define VAX_FLOAT_FORMAT 2 | |
581 | #define IBM_FLOAT_FORMAT 3 | |
582 | #define C4X_FLOAT_FORMAT 4 | |
583 | ||
584 | /* Default to IEEE float if not specified. Nearly all machines use it. */ | |
585 | #ifndef TARGET_FLOAT_FORMAT | |
586 | #define TARGET_FLOAT_FORMAT IEEE_FLOAT_FORMAT | |
587 | #endif | |
588 | ||
888d2cd6 DJ |
589 | /* Some macros can be defined by the backend in either a mode-dependent |
590 | or mode-independent form. The compiler proper should only use the | |
591 | mode-dependent form, providing VOIDmode when the mode is unknown. | |
592 | We can't poison the macros because the backend may reference them. */ | |
593 | ||
594 | #ifndef REGNO_MODE_OK_FOR_BASE_P | |
595 | #define REGNO_MODE_OK_FOR_BASE_P(REGNO, MODE) REGNO_OK_FOR_BASE_P (REGNO) | |
596 | #endif | |
597 | ||
598 | #ifndef REG_MODE_OK_FOR_BASE_P | |
599 | #define REG_MODE_OK_FOR_BASE_P(REG, MODE) REG_OK_FOR_BASE_P (REG) | |
600 | #endif | |
601 | ||
3dcc68a4 NC |
602 | /* Determine the register class for registers suitable to be the base |
603 | address register in a MEM. Allow the choice to be dependent upon | |
604 | the mode of the memory access. */ | |
605 | #ifndef MODE_BASE_REG_CLASS | |
606 | #define MODE_BASE_REG_CLASS(MODE) BASE_REG_CLASS | |
607 | #endif | |
608 | ||
888d2cd6 DJ |
609 | /* Some machines require a different base register class if the index |
610 | is a register. By default, assume that a base register is acceptable. */ | |
611 | #ifndef MODE_BASE_REG_REG_CLASS | |
612 | #define MODE_BASE_REG_REG_CLASS(MODE) MODE_BASE_REG_CLASS(MODE) | |
613 | #endif | |
614 | ||
615 | #ifndef REGNO_MODE_OK_FOR_REG_BASE_P | |
616 | #define REGNO_MODE_OK_FOR_REG_BASE_P(REGNO, MODE) REGNO_MODE_OK_FOR_BASE_P (REGNO, MODE) | |
617 | #endif | |
618 | ||
619 | #ifndef REG_MODE_OK_FOR_REG_BASE_P | |
620 | #define REG_MODE_OK_FOR_REG_BASE_P(REGNO, MODE) REG_MODE_OK_FOR_BASE_P (REGNO, MODE) | |
621 | #endif | |
622 | ||
3fcaac1d RS |
623 | #ifndef LARGEST_EXPONENT_IS_NORMAL |
624 | #define LARGEST_EXPONENT_IS_NORMAL(SIZE) 0 | |
625 | #endif | |
626 | ||
627 | #ifndef ROUND_TOWARDS_ZERO | |
628 | #define ROUND_TOWARDS_ZERO 0 | |
629 | #endif | |
630 | ||
71925bc0 | 631 | #ifndef MODE_HAS_NANS |
3fcaac1d RS |
632 | #define MODE_HAS_NANS(MODE) \ |
633 | (FLOAT_MODE_P (MODE) \ | |
634 | && TARGET_FLOAT_FORMAT == IEEE_FLOAT_FORMAT \ | |
635 | && !LARGEST_EXPONENT_IS_NORMAL (GET_MODE_BITSIZE (MODE))) | |
71925bc0 RS |
636 | #endif |
637 | ||
638 | #ifndef MODE_HAS_INFINITIES | |
3fcaac1d RS |
639 | #define MODE_HAS_INFINITIES(MODE) \ |
640 | (FLOAT_MODE_P (MODE) \ | |
641 | && TARGET_FLOAT_FORMAT == IEEE_FLOAT_FORMAT \ | |
642 | && !LARGEST_EXPONENT_IS_NORMAL (GET_MODE_BITSIZE (MODE))) | |
71925bc0 RS |
643 | #endif |
644 | ||
645 | #ifndef MODE_HAS_SIGNED_ZEROS | |
646 | #define MODE_HAS_SIGNED_ZEROS(MODE) \ | |
647 | (FLOAT_MODE_P (MODE) && TARGET_FLOAT_FORMAT == IEEE_FLOAT_FORMAT) | |
648 | #endif | |
649 | ||
650 | #ifndef MODE_HAS_SIGN_DEPENDENT_ROUNDING | |
3fcaac1d RS |
651 | #define MODE_HAS_SIGN_DEPENDENT_ROUNDING(MODE) \ |
652 | (FLOAT_MODE_P (MODE) \ | |
653 | && TARGET_FLOAT_FORMAT == IEEE_FLOAT_FORMAT \ | |
654 | && !ROUND_TOWARDS_ZERO) | |
71925bc0 RS |
655 | #endif |
656 | ||
c15c90bb ZW |
657 | #ifndef FLOAT_LIB_COMPARE_RETURNS_BOOL |
658 | #define FLOAT_LIB_COMPARE_RETURNS_BOOL(MODE, COMPARISON) false | |
659 | #endif | |
660 | ||
6cb38cd4 | 661 | /* True if the targets integer-comparison functions return { 0, 1, 2 |
b3f8d95d MM |
662 | } to indicate { <, ==, > }. False if { -1, 0, 1 } is used |
663 | instead. The libgcc routines are biased. */ | |
664 | #ifndef TARGET_LIB_INT_CMP_BIASED | |
665 | #define TARGET_LIB_INT_CMP_BIASED (true) | |
666 | #endif | |
667 | ||
2d295af5 ZW |
668 | /* If FLOAT_WORDS_BIG_ENDIAN is not defined in the header files, |
669 | then the word-endianness is the same as for integers. */ | |
efdc7e19 RH |
670 | #ifndef FLOAT_WORDS_BIG_ENDIAN |
671 | #define FLOAT_WORDS_BIG_ENDIAN WORDS_BIG_ENDIAN | |
672 | #endif | |
673 | ||
d57a4b98 RH |
674 | #ifndef TARGET_FLT_EVAL_METHOD |
675 | #define TARGET_FLT_EVAL_METHOD 0 | |
676 | #endif | |
677 | ||
194734e9 | 678 | #ifndef HOT_TEXT_SECTION_NAME |
3a4bdd05 | 679 | #define HOT_TEXT_SECTION_NAME ".text.hot" |
194734e9 JH |
680 | #endif |
681 | ||
682 | #ifndef UNLIKELY_EXECUTED_TEXT_SECTION_NAME | |
3a4bdd05 | 683 | #define UNLIKELY_EXECUTED_TEXT_SECTION_NAME ".text.unlikely" |
194734e9 JH |
684 | #endif |
685 | ||
750054a2 CT |
686 | #ifndef HAS_LONG_COND_BRANCH |
687 | #define HAS_LONG_COND_BRANCH 0 | |
688 | #endif | |
689 | ||
690 | #ifndef HAS_LONG_UNCOND_BRANCH | |
691 | #define HAS_LONG_UNCOND_BRANCH 0 | |
692 | #endif | |
693 | ||
c4336539 PB |
694 | /* By default, only attempt to parallelize bitwise operations, and |
695 | possibly adds/subtracts using bit-twiddling. */ | |
79fe1b3b | 696 | #ifndef UNITS_PER_SIMD_WORD |
c4336539 | 697 | #define UNITS_PER_SIMD_WORD UNITS_PER_WORD |
79fe1b3b DN |
698 | #endif |
699 | ||
4bafaa6f | 700 | /* Determine whether __cxa_atexit, rather than atexit, is used to |
4b7e68e7 | 701 | register C++ destructors for local statics and global objects. */ |
4bafaa6f L |
702 | #ifndef DEFAULT_USE_CXA_ATEXIT |
703 | #define DEFAULT_USE_CXA_ATEXIT 0 | |
704 | #endif | |
705 | ||
ccfc6cc8 UW |
706 | /* Determine whether extra constraint letter should be handled |
707 | via address reload (like 'o'). */ | |
708 | #ifndef EXTRA_MEMORY_CONSTRAINT | |
97488870 | 709 | #define EXTRA_MEMORY_CONSTRAINT(C,STR) 0 |
ccfc6cc8 UW |
710 | #endif |
711 | ||
712 | /* Determine whether extra constraint letter should be handled | |
713 | as an address (like 'p'). */ | |
714 | #ifndef EXTRA_ADDRESS_CONSTRAINT | |
97488870 R |
715 | #define EXTRA_ADDRESS_CONSTRAINT(C,STR) 0 |
716 | #endif | |
717 | ||
718 | /* When a port defines CONSTRAINT_LEN, it should use DEFAULT_CONSTRAINT_LEN | |
719 | for all the characters that it does not want to change, so things like the | |
720 | 'length' of a digit in a matching constraint is an implementation detail, | |
721 | and not part of the interface. */ | |
722 | #define DEFAULT_CONSTRAINT_LEN(C,STR) 1 | |
723 | ||
724 | #ifndef CONSTRAINT_LEN | |
725 | #define CONSTRAINT_LEN(C,STR) DEFAULT_CONSTRAINT_LEN (C, STR) | |
726 | #endif | |
727 | ||
728 | #if defined (CONST_OK_FOR_LETTER_P) && ! defined (CONST_OK_FOR_CONSTRAINT_P) | |
729 | #define CONST_OK_FOR_CONSTRAINT_P(VAL,C,STR) CONST_OK_FOR_LETTER_P (VAL, C) | |
730 | #endif | |
731 | ||
732 | #if defined (CONST_DOUBLE_OK_FOR_LETTER_P) && ! defined (CONST_DOUBLE_OK_FOR_CONSTRAINT_P) | |
733 | #define CONST_DOUBLE_OK_FOR_CONSTRAINT_P(OP,C,STR) \ | |
734 | CONST_DOUBLE_OK_FOR_LETTER_P (OP, C) | |
735 | #endif | |
736 | ||
3ff5ef1b | 737 | #ifndef REG_CLASS_FROM_CONSTRAINT |
97488870 | 738 | #define REG_CLASS_FROM_CONSTRAINT(C,STR) REG_CLASS_FROM_LETTER (C) |
3ff5ef1b | 739 | #endif |
97488870 R |
740 | |
741 | #if defined (EXTRA_CONSTRAINT) && ! defined (EXTRA_CONSTRAINT_STR) | |
742 | #define EXTRA_CONSTRAINT_STR(OP, C,STR) EXTRA_CONSTRAINT (OP, C) | |
ccfc6cc8 UW |
743 | #endif |
744 | ||
37706dd1 HPN |
745 | #ifndef REGISTER_MOVE_COST |
746 | #define REGISTER_MOVE_COST(m, x, y) 2 | |
747 | #endif | |
748 | ||
3f117656 | 749 | /* Determine whether the entire c99 runtime |
272f51a3 JH |
750 | is present in the runtime library. */ |
751 | #ifndef TARGET_C99_FUNCTIONS | |
752 | #define TARGET_C99_FUNCTIONS 0 | |
753 | #endif | |
754 | ||
7dba8395 | 755 | /* Indicate that CLZ and CTZ are undefined at zero. */ |
f676971a | 756 | #ifndef CLZ_DEFINED_VALUE_AT_ZERO |
7dba8395 RH |
757 | #define CLZ_DEFINED_VALUE_AT_ZERO(MODE, VALUE) 0 |
758 | #endif | |
f676971a | 759 | #ifndef CTZ_DEFINED_VALUE_AT_ZERO |
7dba8395 RH |
760 | #define CTZ_DEFINED_VALUE_AT_ZERO(MODE, VALUE) 0 |
761 | #endif | |
762 | ||
06f31100 RS |
763 | /* Provide a default value for STORE_FLAG_VALUE. */ |
764 | #ifndef STORE_FLAG_VALUE | |
765 | #define STORE_FLAG_VALUE 1 | |
766 | #endif | |
767 | ||
436bcda1 GK |
768 | /* This macro is used to determine what the largest unit size that |
769 | move_by_pieces can use is. */ | |
770 | ||
771 | /* MOVE_MAX_PIECES is the number of bytes at a time which we can | |
772 | move efficiently, as opposed to MOVE_MAX which is the maximum | |
773 | number of bytes we can move with a single instruction. */ | |
774 | ||
775 | #ifndef MOVE_MAX_PIECES | |
776 | #define MOVE_MAX_PIECES MOVE_MAX | |
777 | #endif | |
778 | ||
a594a19c GK |
779 | #ifndef STACK_POINTER_OFFSET |
780 | #define STACK_POINTER_OFFSET 0 | |
781 | #endif | |
782 | ||
cca8fb0e KH |
783 | #ifndef LOCAL_REGNO |
784 | #define LOCAL_REGNO(REGNO) 0 | |
785 | #endif | |
786 | ||
9d05bbce KH |
787 | /* EXIT_IGNORE_STACK should be nonzero if, when returning from a function, |
788 | the stack pointer does not matter. The value is tested only in | |
789 | functions that have frame pointers. */ | |
790 | #ifndef EXIT_IGNORE_STACK | |
791 | #define EXIT_IGNORE_STACK 0 | |
792 | #endif | |
793 | ||
0ede749d KH |
794 | /* Assume that case vectors are not pc-relative. */ |
795 | #ifndef CASE_VECTOR_PC_RELATIVE | |
796 | #define CASE_VECTOR_PC_RELATIVE 0 | |
797 | #endif | |
798 | ||
6de9cd9a DN |
799 | /* Assume that trampolines need function alignment. */ |
800 | #ifndef TRAMPOLINE_ALIGNMENT | |
801 | #define TRAMPOLINE_ALIGNMENT FUNCTION_BOUNDARY | |
802 | #endif | |
803 | ||
d220de0e KH |
804 | /* Register mappings for target machines without register windows. */ |
805 | #ifndef INCOMING_REGNO | |
806 | #define INCOMING_REGNO(N) (N) | |
807 | #endif | |
808 | ||
809 | #ifndef OUTGOING_REGNO | |
810 | #define OUTGOING_REGNO(N) (N) | |
811 | #endif | |
812 | ||
bee07d3f KH |
813 | #ifndef SHIFT_COUNT_TRUNCATED |
814 | #define SHIFT_COUNT_TRUNCATED 0 | |
815 | #endif | |
816 | ||
3e759eda KH |
817 | #ifndef LEGITIMIZE_ADDRESS |
818 | #define LEGITIMIZE_ADDRESS(X, OLDX, MODE, WIN) | |
819 | #endif | |
820 | ||
2e4e72b1 ZW |
821 | #ifndef LEGITIMATE_PIC_OPERAND_P |
822 | #define LEGITIMATE_PIC_OPERAND_P(X) 1 | |
823 | #endif | |
824 | ||
1f8551b2 KH |
825 | #ifndef REVERSIBLE_CC_MODE |
826 | #define REVERSIBLE_CC_MODE(MODE) 0 | |
827 | #endif | |
828 | ||
07e15286 DE |
829 | /* Biggest alignment supported by the object file format of this machine. */ |
830 | #ifndef MAX_OFILE_ALIGNMENT | |
831 | #define MAX_OFILE_ALIGNMENT BIGGEST_ALIGNMENT | |
832 | #endif | |
833 | ||
f62c8a5c JJ |
834 | #ifndef FRAME_GROWS_DOWNWARD |
835 | #define FRAME_GROWS_DOWNWARD 0 | |
836 | #endif | |
837 | ||
88657302 | 838 | #endif /* ! GCC_DEFAULTS_H */ |