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eff01bb6 | 1 | /* Definitions of various defaults for tm.h macros. |
d9221e01 | 2 | Copyright (C) 1992, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004 |
d8ea8f28 | 3 | Free Software Foundation, Inc. |
b33c316c | 4 | Contributed by Ron Guilmette (rfg@monkeys.com) |
c53a8ab6 | 5 | |
1322177d | 6 | This file is part of GCC. |
c53a8ab6 | 7 | |
1322177d LB |
8 | GCC is free software; you can redistribute it and/or modify it under |
9 | the terms of the GNU General Public License as published by the Free | |
10 | Software Foundation; either version 2, or (at your option) any later | |
11 | version. | |
c53a8ab6 | 12 | |
1322177d LB |
13 | GCC is distributed in the hope that it will be useful, but WITHOUT ANY |
14 | WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
15 | FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
16 | for more details. | |
c53a8ab6 RS |
17 | |
18 | You should have received a copy of the GNU General Public License | |
1322177d LB |
19 | along with GCC; see the file COPYING. If not, write to the Free |
20 | Software Foundation, 59 Temple Place - Suite 330, Boston, MA | |
21 | 02111-1307, USA. */ | |
c53a8ab6 | 22 | |
d8ea8f28 ZW |
23 | #ifndef GCC_DEFAULTS_H |
24 | #define GCC_DEFAULTS_H | |
25 | ||
2f8dd115 NB |
26 | #ifndef GET_ENVIRONMENT |
27 | #define GET_ENVIRONMENT(VALUE, NAME) do { (VALUE) = getenv (NAME); } while (0) | |
28 | #endif | |
29 | ||
95ec27aa SB |
30 | #define obstack_chunk_alloc ((void *(*) (long)) xmalloc) |
31 | #define obstack_chunk_free ((void (*) (void *)) free) | |
32 | #define OBSTACK_CHUNK_SIZE 0 | |
33 | #define gcc_obstack_init(OBSTACK) \ | |
34 | _obstack_begin ((OBSTACK), OBSTACK_CHUNK_SIZE, 0, \ | |
35 | obstack_chunk_alloc, \ | |
36 | obstack_chunk_free) | |
4fa31c2a | 37 | |
b2b263e1 NB |
38 | /* Define default standard character escape sequences. */ |
39 | #ifndef TARGET_BELL | |
40 | # define TARGET_BELL 007 | |
41 | # define TARGET_BS 010 | |
b2b263e1 | 42 | # define TARGET_CR 015 |
61218d19 | 43 | # define TARGET_DIGIT0 060 |
501990bb | 44 | # define TARGET_ESC 033 |
61218d19 KG |
45 | # define TARGET_FF 014 |
46 | # define TARGET_NEWLINE 012 | |
47 | # define TARGET_TAB 011 | |
48 | # define TARGET_VT 013 | |
b2b263e1 NB |
49 | #endif |
50 | ||
4977bab6 ZW |
51 | /* Store in OUTPUT a string (made with alloca) containing an |
52 | assembler-name for a local static variable or function named NAME. | |
7b73db04 CH |
53 | LABELNO is an integer which is different for each call. */ |
54 | ||
4977bab6 ZW |
55 | #ifndef ASM_PN_FORMAT |
56 | # ifndef NO_DOT_IN_LABEL | |
57 | # define ASM_PN_FORMAT "%s.%lu" | |
58 | # else | |
59 | # ifndef NO_DOLLAR_IN_LABEL | |
60 | # define ASM_PN_FORMAT "%s$%lu" | |
61 | # else | |
62 | # define ASM_PN_FORMAT "__%s_%lu" | |
63 | # endif | |
64 | # endif | |
65 | #endif /* ! ASM_PN_FORMAT */ | |
66 | ||
7b73db04 | 67 | #ifndef ASM_FORMAT_PRIVATE_NAME |
4977bab6 ZW |
68 | # define ASM_FORMAT_PRIVATE_NAME(OUTPUT, NAME, LABELNO) \ |
69 | do { const char *const name_ = (NAME); \ | |
28dab132 BI |
70 | char *const output_ = (OUTPUT) = \ |
71 | (char *) alloca (strlen (name_) + 32); \ | |
4977bab6 | 72 | sprintf (output_, ASM_PN_FORMAT, name_, (unsigned long)(LABELNO)); \ |
7b73db04 CH |
73 | } while (0) |
74 | #endif | |
75 | ||
76 | #ifndef ASM_STABD_OP | |
0a3e1f45 | 77 | #define ASM_STABD_OP "\t.stabd\t" |
7b73db04 CH |
78 | #endif |
79 | ||
80 | /* This is how to output an element of a case-vector that is absolute. | |
81 | Some targets don't use this, but we have to define it anyway. */ | |
82 | ||
83 | #ifndef ASM_OUTPUT_ADDR_VEC_ELT | |
84 | #define ASM_OUTPUT_ADDR_VEC_ELT(FILE, VALUE) \ | |
07b50aad | 85 | do { fputs (integer_asm_op (POINTER_SIZE / BITS_PER_UNIT, TRUE), FILE); \ |
4977bab6 | 86 | (*targetm.asm_out.internal_label) (FILE, "L", (VALUE)); \ |
7b73db04 CH |
87 | fputc ('\n', FILE); \ |
88 | } while (0) | |
89 | #endif | |
90 | ||
e0a21ab9 | 91 | /* Choose a reasonable default for ASM_OUTPUT_ASCII. */ |
c53a8ab6 RS |
92 | |
93 | #ifndef ASM_OUTPUT_ASCII | |
94 | #define ASM_OUTPUT_ASCII(MYFILE, MYSTRING, MYLENGTH) \ | |
95 | do { \ | |
96 | FILE *_hide_asm_out_file = (MYFILE); \ | |
47ee9bcb | 97 | const unsigned char *_hide_p = (const unsigned char *) (MYSTRING); \ |
c53a8ab6 RS |
98 | int _hide_thissize = (MYLENGTH); \ |
99 | { \ | |
100 | FILE *asm_out_file = _hide_asm_out_file; \ | |
47ee9bcb | 101 | const unsigned char *p = _hide_p; \ |
c53a8ab6 RS |
102 | int thissize = _hide_thissize; \ |
103 | int i; \ | |
104 | fprintf (asm_out_file, "\t.ascii \""); \ | |
105 | \ | |
106 | for (i = 0; i < thissize; i++) \ | |
107 | { \ | |
b3694847 | 108 | int c = p[i]; \ |
c53a8ab6 RS |
109 | if (c == '\"' || c == '\\') \ |
110 | putc ('\\', asm_out_file); \ | |
5f6d3823 | 111 | if (ISPRINT(c)) \ |
c53a8ab6 RS |
112 | putc (c, asm_out_file); \ |
113 | else \ | |
114 | { \ | |
115 | fprintf (asm_out_file, "\\%o", c); \ | |
116 | /* After an octal-escape, if a digit follows, \ | |
117 | terminate one string constant and start another. \ | |
8aeea6e6 | 118 | The VAX assembler fails to stop reading the escape \ |
c53a8ab6 RS |
119 | after three digits, so this is the only way we \ |
120 | can get it to parse the data properly. */ \ | |
d07ecc3b | 121 | if (i < thissize - 1 && ISDIGIT(p[i + 1])) \ |
c53a8ab6 RS |
122 | fprintf (asm_out_file, "\"\n\t.ascii \""); \ |
123 | } \ | |
124 | } \ | |
125 | fprintf (asm_out_file, "\"\n"); \ | |
126 | } \ | |
127 | } \ | |
128 | while (0) | |
129 | #endif | |
d0d4af87 | 130 | |
650f773a JW |
131 | /* This is how we tell the assembler to equate two values. */ |
132 | #ifdef SET_ASM_OP | |
133 | #ifndef ASM_OUTPUT_DEF | |
134 | #define ASM_OUTPUT_DEF(FILE,LABEL1,LABEL2) \ | |
e8638df0 | 135 | do { fprintf ((FILE), "%s", SET_ASM_OP); \ |
650f773a JW |
136 | assemble_name (FILE, LABEL1); \ |
137 | fprintf (FILE, ","); \ | |
138 | assemble_name (FILE, LABEL2); \ | |
139 | fprintf (FILE, "\n"); \ | |
140 | } while (0) | |
141 | #endif | |
142 | #endif | |
daefd78b | 143 | |
4ad5e05d KG |
144 | /* This is how to output the definition of a user-level label named |
145 | NAME, such as the label on a static function or variable NAME. */ | |
146 | ||
147 | #ifndef ASM_OUTPUT_LABEL | |
148 | #define ASM_OUTPUT_LABEL(FILE,NAME) \ | |
149 | do { assemble_name ((FILE), (NAME)); fputs (":\n", (FILE)); } while (0) | |
150 | #endif | |
151 | ||
81d77cda RK |
152 | /* This is how to output a reference to a user-level label named NAME. */ |
153 | ||
154 | #ifndef ASM_OUTPUT_LABELREF | |
19283265 | 155 | #define ASM_OUTPUT_LABELREF(FILE,NAME) asm_fprintf ((FILE), "%U%s", (NAME)) |
81d77cda RK |
156 | #endif |
157 | ||
8215347e JW |
158 | /* Allow target to print debug info labels specially. This is useful for |
159 | VLIW targets, since debug info labels should go into the middle of | |
160 | instruction bundles instead of breaking them. */ | |
161 | ||
162 | #ifndef ASM_OUTPUT_DEBUG_LABEL | |
163 | #define ASM_OUTPUT_DEBUG_LABEL(FILE, PREFIX, NUM) \ | |
4977bab6 | 164 | (*targetm.asm_out.internal_label) (FILE, PREFIX, NUM) |
8215347e JW |
165 | #endif |
166 | ||
3aa8ab7b | 167 | /* This is how we tell the assembler that a symbol is weak. */ |
20c93f7c RO |
168 | #ifndef ASM_OUTPUT_WEAK_ALIAS |
169 | #if defined (ASM_WEAKEN_LABEL) && defined (ASM_OUTPUT_DEF) | |
3aa8ab7b L |
170 | #define ASM_OUTPUT_WEAK_ALIAS(STREAM, NAME, VALUE) \ |
171 | do \ | |
172 | { \ | |
173 | ASM_WEAKEN_LABEL (STREAM, NAME); \ | |
174 | if (VALUE) \ | |
175 | ASM_OUTPUT_DEF (STREAM, NAME, VALUE); \ | |
176 | } \ | |
177 | while (0) | |
178 | #endif | |
20c93f7c | 179 | #endif |
3aa8ab7b | 180 | |
2be2ac70 ZW |
181 | /* How to emit a .type directive. */ |
182 | #ifndef ASM_OUTPUT_TYPE_DIRECTIVE | |
183 | #if defined TYPE_ASM_OP && defined TYPE_OPERAND_FMT | |
184 | #define ASM_OUTPUT_TYPE_DIRECTIVE(STREAM, NAME, TYPE) \ | |
185 | do \ | |
186 | { \ | |
187 | fputs (TYPE_ASM_OP, STREAM); \ | |
188 | assemble_name (STREAM, NAME); \ | |
189 | fputs (", ", STREAM); \ | |
190 | fprintf (STREAM, TYPE_OPERAND_FMT, TYPE); \ | |
191 | putc ('\n', STREAM); \ | |
192 | } \ | |
193 | while (0) | |
194 | #endif | |
195 | #endif | |
196 | ||
197 | /* How to emit a .size directive. */ | |
198 | #ifndef ASM_OUTPUT_SIZE_DIRECTIVE | |
199 | #ifdef SIZE_ASM_OP | |
200 | #define ASM_OUTPUT_SIZE_DIRECTIVE(STREAM, NAME, SIZE) \ | |
201 | do \ | |
202 | { \ | |
203 | HOST_WIDE_INT size_ = (SIZE); \ | |
204 | fputs (SIZE_ASM_OP, STREAM); \ | |
205 | assemble_name (STREAM, NAME); \ | |
90ff44cf | 206 | fprintf (STREAM, ", " HOST_WIDE_INT_PRINT_DEC "\n", size_); \ |
2be2ac70 ZW |
207 | } \ |
208 | while (0) | |
209 | ||
99086d59 | 210 | #define ASM_OUTPUT_MEASURED_SIZE(STREAM, NAME) \ |
2be2ac70 ZW |
211 | do \ |
212 | { \ | |
213 | fputs (SIZE_ASM_OP, STREAM); \ | |
99086d59 ZW |
214 | assemble_name (STREAM, NAME); \ |
215 | fputs (", .-", STREAM); \ | |
216 | assemble_name (STREAM, NAME); \ | |
2be2ac70 ZW |
217 | putc ('\n', STREAM); \ |
218 | } \ | |
219 | while (0) | |
220 | ||
221 | #endif | |
222 | #endif | |
223 | ||
daefd78b JM |
224 | /* This determines whether or not we support weak symbols. */ |
225 | #ifndef SUPPORTS_WEAK | |
79c4e63f | 226 | #if defined (ASM_WEAKEN_LABEL) || defined (ASM_WEAKEN_DECL) |
daefd78b JM |
227 | #define SUPPORTS_WEAK 1 |
228 | #else | |
229 | #define SUPPORTS_WEAK 0 | |
230 | #endif | |
231 | #endif | |
a6ab3aad | 232 | |
1ca894a0 MM |
233 | /* This determines whether or not we support link-once semantics. */ |
234 | #ifndef SUPPORTS_ONE_ONLY | |
235 | #ifdef MAKE_DECL_ONE_ONLY | |
236 | #define SUPPORTS_ONE_ONLY 1 | |
237 | #else | |
238 | #define SUPPORTS_ONE_ONLY 0 | |
239 | #endif | |
240 | #endif | |
241 | ||
0524c91d MA |
242 | /* This determines whether weak symbols must be left out of a static |
243 | archive's table of contents. Defining this macro to be nonzero has | |
244 | the consequence that certain symbols will not be made weak that | |
245 | otherwise would be. The C++ ABI requires this macro to be zero; | |
f676971a | 246 | see the documentation. */ |
0524c91d MA |
247 | #ifndef TARGET_WEAK_NOT_IN_ARCHIVE_TOC |
248 | #define TARGET_WEAK_NOT_IN_ARCHIVE_TOC 0 | |
4746cf84 MA |
249 | #endif |
250 | ||
251 | /* This determines whether or not we need linkonce unwind information */ | |
252 | #ifndef TARGET_USES_WEAK_UNWIND_INFO | |
253 | #define TARGET_USES_WEAK_UNWIND_INFO 0 | |
254 | #endif | |
255 | ||
d48fd218 ZW |
256 | /* By default, there is no prefix on user-defined symbols. */ |
257 | #ifndef USER_LABEL_PREFIX | |
258 | #define USER_LABEL_PREFIX "" | |
259 | #endif | |
260 | ||
8f08ea1e | 261 | /* If the target supports weak symbols, define TARGET_ATTRIBUTE_WEAK to |
f676971a | 262 | provide a weak attribute. Else define it to nothing. |
8f08ea1e | 263 | |
d02af173 | 264 | This would normally belong in ansidecl.h, but SUPPORTS_WEAK is |
8f08ea1e L |
265 | not available at that time. |
266 | ||
267 | Note, this is only for use by target files which we know are to be | |
268 | compiled by GCC. */ | |
269 | #ifndef TARGET_ATTRIBUTE_WEAK | |
270 | # if SUPPORTS_WEAK | |
271 | # define TARGET_ATTRIBUTE_WEAK __attribute__ ((weak)) | |
272 | # else | |
273 | # define TARGET_ATTRIBUTE_WEAK | |
274 | # endif | |
275 | #endif | |
276 | ||
4746cf84 MA |
277 | /* This determines whether this target supports hidden visibility. |
278 | This is a weaker condition than HAVE_GAS_HIDDEN, which probes for | |
9cf737f8 | 279 | specific assembler syntax. */ |
4746cf84 MA |
280 | #ifndef TARGET_SUPPORTS_HIDDEN |
281 | # ifdef HAVE_GAS_HIDDEN | |
282 | # define TARGET_SUPPORTS_HIDDEN 1 | |
283 | # else | |
284 | # define TARGET_SUPPORTS_HIDDEN 0 | |
285 | # endif | |
286 | #endif | |
287 | ||
288 | /* Determines whether we may use common symbols to represent one-only | |
9cf737f8 | 289 | semantics (a.k.a. "vague linkage"). */ |
4746cf84 MA |
290 | #ifndef USE_COMMON_FOR_ONE_ONLY |
291 | # define USE_COMMON_FOR_ONE_ONLY 1 | |
292 | #endif | |
293 | ||
294 | ||
ea4f1fce JO |
295 | /* If the target supports init_priority C++ attribute, give |
296 | SUPPORTS_INIT_PRIORITY a nonzero value. */ | |
297 | #ifndef SUPPORTS_INIT_PRIORITY | |
298 | #define SUPPORTS_INIT_PRIORITY 1 | |
299 | #endif /* SUPPORTS_INIT_PRIORITY */ | |
300 | ||
5897739e JO |
301 | /* If duplicate library search directories can be removed from a |
302 | linker command without changing the linker's semantics, give this | |
303 | symbol a nonzero. */ | |
304 | #ifndef LINK_ELIMINATE_DUPLICATE_LDIRECTORIES | |
305 | #define LINK_ELIMINATE_DUPLICATE_LDIRECTORIES 0 | |
306 | #endif /* LINK_ELIMINATE_DUPLICATE_LDIRECTORIES */ | |
307 | ||
a6ab3aad JM |
308 | /* If we have a definition of INCOMING_RETURN_ADDR_RTX, assume that |
309 | the rest of the DWARF 2 frame unwind support is also provided. */ | |
0021b564 JM |
310 | #if !defined (DWARF2_UNWIND_INFO) && defined (INCOMING_RETURN_ADDR_RTX) |
311 | #define DWARF2_UNWIND_INFO 1 | |
a6ab3aad | 312 | #endif |
b366352b | 313 | |
2cc07db4 RH |
314 | /* If we have named sections, and we're using crtstuff to run ctors, |
315 | use them for registering eh frame information. */ | |
bc2a8f08 RH |
316 | #if defined (TARGET_ASM_NAMED_SECTION) && DWARF2_UNWIND_INFO \ |
317 | && !defined(EH_FRAME_IN_DATA_SECTION) | |
7c262518 RH |
318 | #ifndef EH_FRAME_SECTION_NAME |
319 | #define EH_FRAME_SECTION_NAME ".eh_frame" | |
320 | #endif | |
31cf0144 JM |
321 | #endif |
322 | ||
6351543d AG |
323 | /* If we have named section and we support weak symbols, then use the |
324 | .jcr section for recording java classes which need to be registered | |
325 | at program start-up time. */ | |
326 | #if defined (TARGET_ASM_NAMED_SECTION) && SUPPORTS_WEAK | |
327 | #ifndef JCR_SECTION_NAME | |
328 | #define JCR_SECTION_NAME ".jcr" | |
329 | #endif | |
330 | #endif | |
331 | ||
b366352b MM |
332 | /* By default, we generate a label at the beginning and end of the |
333 | text section, and compute the size of the text section by | |
f676971a | 334 | subtracting the two. However, on some platforms that doesn't |
b366352b MM |
335 | work, and we use the section itself, rather than a label at the |
336 | beginning of it, to indicate the start of the section. On such | |
337 | platforms, define this to zero. */ | |
338 | #ifndef DWARF2_GENERATE_TEXT_SECTION_LABEL | |
339 | #define DWARF2_GENERATE_TEXT_SECTION_LABEL 1 | |
340 | #endif | |
246833ac | 341 | |
c478efd1 GDR |
342 | /* Number of hardware registers that go into the DWARF-2 unwind info. |
343 | If not defined, equals FIRST_PSEUDO_REGISTER */ | |
344 | ||
345 | #ifndef DWARF_FRAME_REGISTERS | |
346 | #define DWARF_FRAME_REGISTERS FIRST_PSEUDO_REGISTER | |
347 | #endif | |
d8ea8f28 | 348 | |
4617e3b5 KG |
349 | /* How to renumber registers for dbx and gdb. If not defined, assume |
350 | no renumbering is necessary. */ | |
351 | ||
352 | #ifndef DBX_REGISTER_NUMBER | |
353 | #define DBX_REGISTER_NUMBER(REGNO) (REGNO) | |
354 | #endif | |
355 | ||
d8ea8f28 ZW |
356 | /* Default sizes for base C types. If the sizes are different for |
357 | your target, you should override these values by defining the | |
358 | appropriate symbols in your tm.h file. */ | |
359 | ||
5c60f03d KG |
360 | #ifndef BITS_PER_UNIT |
361 | #define BITS_PER_UNIT 8 | |
362 | #endif | |
363 | ||
e81dd381 KG |
364 | #ifndef BITS_PER_WORD |
365 | #define BITS_PER_WORD (BITS_PER_UNIT * UNITS_PER_WORD) | |
366 | #endif | |
367 | ||
d8ea8f28 ZW |
368 | #ifndef CHAR_TYPE_SIZE |
369 | #define CHAR_TYPE_SIZE BITS_PER_UNIT | |
370 | #endif | |
371 | ||
609688f3 JM |
372 | #ifndef BOOL_TYPE_SIZE |
373 | /* `bool' has size and alignment `1', on almost all platforms. */ | |
374 | #define BOOL_TYPE_SIZE CHAR_TYPE_SIZE | |
375 | #endif | |
376 | ||
d8ea8f28 ZW |
377 | #ifndef SHORT_TYPE_SIZE |
378 | #define SHORT_TYPE_SIZE (BITS_PER_UNIT * MIN ((UNITS_PER_WORD + 1) / 2, 2)) | |
379 | #endif | |
380 | ||
381 | #ifndef INT_TYPE_SIZE | |
382 | #define INT_TYPE_SIZE BITS_PER_WORD | |
383 | #endif | |
384 | ||
385 | #ifndef LONG_TYPE_SIZE | |
386 | #define LONG_TYPE_SIZE BITS_PER_WORD | |
387 | #endif | |
388 | ||
389 | #ifndef LONG_LONG_TYPE_SIZE | |
390 | #define LONG_LONG_TYPE_SIZE (BITS_PER_WORD * 2) | |
391 | #endif | |
392 | ||
393 | #ifndef WCHAR_TYPE_SIZE | |
394 | #define WCHAR_TYPE_SIZE INT_TYPE_SIZE | |
395 | #endif | |
396 | ||
d8ea8f28 ZW |
397 | #ifndef FLOAT_TYPE_SIZE |
398 | #define FLOAT_TYPE_SIZE BITS_PER_WORD | |
399 | #endif | |
400 | ||
401 | #ifndef DOUBLE_TYPE_SIZE | |
402 | #define DOUBLE_TYPE_SIZE (BITS_PER_WORD * 2) | |
403 | #endif | |
404 | ||
405 | #ifndef LONG_DOUBLE_TYPE_SIZE | |
406 | #define LONG_DOUBLE_TYPE_SIZE (BITS_PER_WORD * 2) | |
407 | #endif | |
408 | ||
2465bf76 KG |
409 | /* Width in bits of a pointer. Mind the value of the macro `Pmode'. */ |
410 | #ifndef POINTER_SIZE | |
411 | #define POINTER_SIZE BITS_PER_WORD | |
412 | #endif | |
413 | ||
848e0190 JH |
414 | #ifndef PIC_OFFSET_TABLE_REGNUM |
415 | #define PIC_OFFSET_TABLE_REGNUM INVALID_REGNUM | |
416 | #endif | |
417 | ||
b2ca3702 MM |
418 | #ifndef TARGET_DLLIMPORT_DECL_ATTRIBUTES |
419 | #define TARGET_DLLIMPORT_DECL_ATTRIBUTES 0 | |
420 | #endif | |
421 | ||
63c5b495 | 422 | #ifndef TARGET_DECLSPEC |
b2ca3702 | 423 | #if TARGET_DLLIMPORT_DECL_ATTRIBUTES |
63c5b495 MM |
424 | /* If the target supports the "dllimport" attribute, users are |
425 | probably used to the "__declspec" syntax. */ | |
426 | #define TARGET_DECLSPEC 1 | |
427 | #else | |
428 | #define TARGET_DECLSPEC 0 | |
429 | #endif | |
430 | #endif | |
431 | ||
a9374841 MM |
432 | /* By default, the preprocessor should be invoked the same way in C++ |
433 | as in C. */ | |
434 | #ifndef CPLUSPLUS_CPP_SPEC | |
435 | #ifdef CPP_SPEC | |
436 | #define CPLUSPLUS_CPP_SPEC CPP_SPEC | |
437 | #endif | |
438 | #endif | |
439 | ||
bf501a65 RH |
440 | #ifndef ACCUMULATE_OUTGOING_ARGS |
441 | #define ACCUMULATE_OUTGOING_ARGS 0 | |
442 | #endif | |
443 | ||
444 | /* Supply a default definition for PUSH_ARGS. */ | |
445 | #ifndef PUSH_ARGS | |
446 | #ifdef PUSH_ROUNDING | |
447 | #define PUSH_ARGS !ACCUMULATE_OUTGOING_ARGS | |
448 | #else | |
449 | #define PUSH_ARGS 0 | |
450 | #endif | |
451 | #endif | |
452 | ||
9d6bef95 JM |
453 | /* Decide whether a function's arguments should be processed |
454 | from first to last or from last to first. | |
455 | ||
456 | They should if the stack and args grow in opposite directions, but | |
457 | only if we have push insns. */ | |
458 | ||
459 | #ifdef PUSH_ROUNDING | |
460 | ||
461 | #ifndef PUSH_ARGS_REVERSED | |
462 | #if defined (STACK_GROWS_DOWNWARD) != defined (ARGS_GROW_DOWNWARD) | |
463 | #define PUSH_ARGS_REVERSED PUSH_ARGS | |
464 | #endif | |
465 | #endif | |
466 | ||
467 | #endif | |
468 | ||
469 | #ifndef PUSH_ARGS_REVERSED | |
470 | #define PUSH_ARGS_REVERSED 0 | |
471 | #endif | |
472 | ||
31cdd499 ZW |
473 | /* If PREFERRED_STACK_BOUNDARY is not defined, set it to STACK_BOUNDARY. |
474 | STACK_BOUNDARY is required. */ | |
475 | #ifndef PREFERRED_STACK_BOUNDARY | |
476 | #define PREFERRED_STACK_BOUNDARY STACK_BOUNDARY | |
477 | #endif | |
478 | ||
67231816 | 479 | /* By default, the C++ compiler will use function addresses in the |
cc2902df | 480 | vtable entries. Setting this nonzero tells the compiler to use |
67231816 | 481 | function descriptors instead. The value of this macro says how |
f676971a | 482 | many words wide the descriptor is (normally 2). It is assumed |
67231816 RH |
483 | that the address of a function descriptor may be treated as a |
484 | pointer to a function. */ | |
485 | #ifndef TARGET_VTABLE_USES_DESCRIPTORS | |
486 | #define TARGET_VTABLE_USES_DESCRIPTORS 0 | |
487 | #endif | |
488 | ||
a6f5e048 RH |
489 | /* By default, the vtable entries are void pointers, the so the alignment |
490 | is the same as pointer alignment. The value of this macro specifies | |
491 | the alignment of the vtable entry in bits. It should be defined only | |
4b7e68e7 | 492 | when special alignment is necessary. */ |
a6f5e048 RH |
493 | #ifndef TARGET_VTABLE_ENTRY_ALIGN |
494 | #define TARGET_VTABLE_ENTRY_ALIGN POINTER_SIZE | |
495 | #endif | |
496 | ||
497 | /* There are a few non-descriptor entries in the vtable at offsets below | |
498 | zero. If these entries must be padded (say, to preserve the alignment | |
499 | specified by TARGET_VTABLE_ENTRY_ALIGN), set this to the number of | |
500 | words in each data entry. */ | |
501 | #ifndef TARGET_VTABLE_DATA_ENTRY_DISTANCE | |
502 | #define TARGET_VTABLE_DATA_ENTRY_DISTANCE 1 | |
503 | #endif | |
504 | ||
4a77e08c DS |
505 | /* Decide whether it is safe to use a local alias for a virtual function |
506 | when constructing thunks. */ | |
507 | #ifndef TARGET_USE_LOCAL_THUNK_ALIAS_P | |
508 | #ifdef ASM_OUTPUT_DEF | |
509 | #define TARGET_USE_LOCAL_THUNK_ALIAS_P(DECL) 1 | |
510 | #else | |
511 | #define TARGET_USE_LOCAL_THUNK_ALIAS_P(DECL) 0 | |
512 | #endif | |
513 | #endif | |
514 | ||
2a1ee410 RH |
515 | /* Select a format to encode pointers in exception handling data. We |
516 | prefer those that result in fewer dynamic relocations. Assume no | |
517 | special support here and encode direct references. */ | |
518 | #ifndef ASM_PREFERRED_EH_DATA_FORMAT | |
519 | #define ASM_PREFERRED_EH_DATA_FORMAT(CODE,GLOBAL) DW_EH_PE_absptr | |
520 | #endif | |
521 | ||
f3c55c97 AO |
522 | /* By default, the C++ compiler will use the lowest bit of the pointer |
523 | to function to indicate a pointer-to-member-function points to a | |
524 | virtual member function. However, if FUNCTION_BOUNDARY indicates | |
525 | function addresses aren't always even, the lowest bit of the delta | |
526 | field will be used. */ | |
527 | #ifndef TARGET_PTRMEMFUNC_VBIT_LOCATION | |
528 | #define TARGET_PTRMEMFUNC_VBIT_LOCATION \ | |
529 | (FUNCTION_BOUNDARY >= 2 * BITS_PER_UNIT \ | |
530 | ? ptrmemfunc_vbit_in_pfn : ptrmemfunc_vbit_in_delta) | |
531 | #endif | |
532 | ||
5f0e9ea2 GK |
533 | #ifndef DEFAULT_GDB_EXTENSIONS |
534 | #define DEFAULT_GDB_EXTENSIONS 1 | |
535 | #endif | |
536 | ||
537 | /* If more than one debugging type is supported, you must define | |
f8ca7e49 | 538 | PREFERRED_DEBUGGING_TYPE to choose the default. */ |
5f0e9ea2 | 539 | |
f8ca7e49 ZW |
540 | #if 1 < (defined (DBX_DEBUGGING_INFO) + defined (SDB_DEBUGGING_INFO) \ |
541 | + defined (DWARF2_DEBUGGING_INFO) + defined (XCOFF_DEBUGGING_INFO) \ | |
542 | + defined (VMS_DEBUGGING_INFO)) | |
5f0e9ea2 | 543 | #ifndef PREFERRED_DEBUGGING_TYPE |
f8ca7e49 | 544 | #error You must define PREFERRED_DEBUGGING_TYPE |
5f0e9ea2 | 545 | #endif /* no PREFERRED_DEBUGGING_TYPE */ |
f8ca7e49 ZW |
546 | |
547 | /* If only one debugging format is supported, define PREFERRED_DEBUGGING_TYPE | |
548 | here so other code needn't care. */ | |
549 | #elif defined DBX_DEBUGGING_INFO | |
5f0e9ea2 | 550 | #define PREFERRED_DEBUGGING_TYPE DBX_DEBUG |
f8ca7e49 ZW |
551 | |
552 | #elif defined SDB_DEBUGGING_INFO | |
5f0e9ea2 | 553 | #define PREFERRED_DEBUGGING_TYPE SDB_DEBUG |
f8ca7e49 ZW |
554 | |
555 | #elif defined DWARF2_DEBUGGING_INFO | |
5f0e9ea2 | 556 | #define PREFERRED_DEBUGGING_TYPE DWARF2_DEBUG |
f8ca7e49 ZW |
557 | |
558 | #elif defined VMS_DEBUGGING_INFO | |
7a0c8d71 | 559 | #define PREFERRED_DEBUGGING_TYPE VMS_AND_DWARF2_DEBUG |
f8ca7e49 ZW |
560 | |
561 | #elif defined XCOFF_DEBUGGING_INFO | |
5f0e9ea2 | 562 | #define PREFERRED_DEBUGGING_TYPE XCOFF_DEBUG |
5f0e9ea2 | 563 | |
f8ca7e49 ZW |
564 | #else |
565 | /* No debugging format is supported by this target. */ | |
5f0e9ea2 GK |
566 | #define PREFERRED_DEBUGGING_TYPE NO_DEBUG |
567 | #endif | |
568 | ||
66d93b5a RH |
569 | /* Define codes for all the float formats that we know of. */ |
570 | #define UNKNOWN_FLOAT_FORMAT 0 | |
571 | #define IEEE_FLOAT_FORMAT 1 | |
572 | #define VAX_FLOAT_FORMAT 2 | |
573 | #define IBM_FLOAT_FORMAT 3 | |
574 | #define C4X_FLOAT_FORMAT 4 | |
575 | ||
576 | /* Default to IEEE float if not specified. Nearly all machines use it. */ | |
577 | #ifndef TARGET_FLOAT_FORMAT | |
578 | #define TARGET_FLOAT_FORMAT IEEE_FLOAT_FORMAT | |
579 | #endif | |
580 | ||
3dcc68a4 NC |
581 | /* Determine the register class for registers suitable to be the base |
582 | address register in a MEM. Allow the choice to be dependent upon | |
583 | the mode of the memory access. */ | |
584 | #ifndef MODE_BASE_REG_CLASS | |
585 | #define MODE_BASE_REG_CLASS(MODE) BASE_REG_CLASS | |
586 | #endif | |
587 | ||
3fcaac1d RS |
588 | #ifndef LARGEST_EXPONENT_IS_NORMAL |
589 | #define LARGEST_EXPONENT_IS_NORMAL(SIZE) 0 | |
590 | #endif | |
591 | ||
592 | #ifndef ROUND_TOWARDS_ZERO | |
593 | #define ROUND_TOWARDS_ZERO 0 | |
594 | #endif | |
595 | ||
71925bc0 | 596 | #ifndef MODE_HAS_NANS |
3fcaac1d RS |
597 | #define MODE_HAS_NANS(MODE) \ |
598 | (FLOAT_MODE_P (MODE) \ | |
599 | && TARGET_FLOAT_FORMAT == IEEE_FLOAT_FORMAT \ | |
600 | && !LARGEST_EXPONENT_IS_NORMAL (GET_MODE_BITSIZE (MODE))) | |
71925bc0 RS |
601 | #endif |
602 | ||
603 | #ifndef MODE_HAS_INFINITIES | |
3fcaac1d RS |
604 | #define MODE_HAS_INFINITIES(MODE) \ |
605 | (FLOAT_MODE_P (MODE) \ | |
606 | && TARGET_FLOAT_FORMAT == IEEE_FLOAT_FORMAT \ | |
607 | && !LARGEST_EXPONENT_IS_NORMAL (GET_MODE_BITSIZE (MODE))) | |
71925bc0 RS |
608 | #endif |
609 | ||
610 | #ifndef MODE_HAS_SIGNED_ZEROS | |
611 | #define MODE_HAS_SIGNED_ZEROS(MODE) \ | |
612 | (FLOAT_MODE_P (MODE) && TARGET_FLOAT_FORMAT == IEEE_FLOAT_FORMAT) | |
613 | #endif | |
614 | ||
615 | #ifndef MODE_HAS_SIGN_DEPENDENT_ROUNDING | |
3fcaac1d RS |
616 | #define MODE_HAS_SIGN_DEPENDENT_ROUNDING(MODE) \ |
617 | (FLOAT_MODE_P (MODE) \ | |
618 | && TARGET_FLOAT_FORMAT == IEEE_FLOAT_FORMAT \ | |
619 | && !ROUND_TOWARDS_ZERO) | |
71925bc0 RS |
620 | #endif |
621 | ||
c15c90bb ZW |
622 | #ifndef FLOAT_LIB_COMPARE_RETURNS_BOOL |
623 | #define FLOAT_LIB_COMPARE_RETURNS_BOOL(MODE, COMPARISON) false | |
624 | #endif | |
625 | ||
b3f8d95d MM |
626 | /* True if the targets integer-comparision fucntions return { 0, 1, 2 |
627 | } to indicate { <, ==, > }. False if { -1, 0, 1 } is used | |
628 | instead. The libgcc routines are biased. */ | |
629 | #ifndef TARGET_LIB_INT_CMP_BIASED | |
630 | #define TARGET_LIB_INT_CMP_BIASED (true) | |
631 | #endif | |
632 | ||
2d295af5 ZW |
633 | /* If FLOAT_WORDS_BIG_ENDIAN is not defined in the header files, |
634 | then the word-endianness is the same as for integers. */ | |
efdc7e19 RH |
635 | #ifndef FLOAT_WORDS_BIG_ENDIAN |
636 | #define FLOAT_WORDS_BIG_ENDIAN WORDS_BIG_ENDIAN | |
637 | #endif | |
638 | ||
d57a4b98 RH |
639 | #ifndef TARGET_FLT_EVAL_METHOD |
640 | #define TARGET_FLT_EVAL_METHOD 0 | |
641 | #endif | |
642 | ||
194734e9 | 643 | #ifndef HOT_TEXT_SECTION_NAME |
3a4bdd05 | 644 | #define HOT_TEXT_SECTION_NAME ".text.hot" |
194734e9 JH |
645 | #endif |
646 | ||
647 | #ifndef UNLIKELY_EXECUTED_TEXT_SECTION_NAME | |
3a4bdd05 | 648 | #define UNLIKELY_EXECUTED_TEXT_SECTION_NAME ".text.unlikely" |
194734e9 JH |
649 | #endif |
650 | ||
750054a2 CT |
651 | #ifndef HAS_LONG_COND_BRANCH |
652 | #define HAS_LONG_COND_BRANCH 0 | |
653 | #endif | |
654 | ||
655 | #ifndef HAS_LONG_UNCOND_BRANCH | |
656 | #define HAS_LONG_UNCOND_BRANCH 0 | |
657 | #endif | |
658 | ||
79fe1b3b DN |
659 | #ifndef UNITS_PER_SIMD_WORD |
660 | #define UNITS_PER_SIMD_WORD 0 | |
661 | #endif | |
662 | ||
4bafaa6f | 663 | /* Determine whether __cxa_atexit, rather than atexit, is used to |
4b7e68e7 | 664 | register C++ destructors for local statics and global objects. */ |
4bafaa6f L |
665 | #ifndef DEFAULT_USE_CXA_ATEXIT |
666 | #define DEFAULT_USE_CXA_ATEXIT 0 | |
667 | #endif | |
668 | ||
ccfc6cc8 UW |
669 | /* Determine whether extra constraint letter should be handled |
670 | via address reload (like 'o'). */ | |
671 | #ifndef EXTRA_MEMORY_CONSTRAINT | |
97488870 | 672 | #define EXTRA_MEMORY_CONSTRAINT(C,STR) 0 |
ccfc6cc8 UW |
673 | #endif |
674 | ||
675 | /* Determine whether extra constraint letter should be handled | |
676 | as an address (like 'p'). */ | |
677 | #ifndef EXTRA_ADDRESS_CONSTRAINT | |
97488870 R |
678 | #define EXTRA_ADDRESS_CONSTRAINT(C,STR) 0 |
679 | #endif | |
680 | ||
681 | /* When a port defines CONSTRAINT_LEN, it should use DEFAULT_CONSTRAINT_LEN | |
682 | for all the characters that it does not want to change, so things like the | |
683 | 'length' of a digit in a matching constraint is an implementation detail, | |
684 | and not part of the interface. */ | |
685 | #define DEFAULT_CONSTRAINT_LEN(C,STR) 1 | |
686 | ||
687 | #ifndef CONSTRAINT_LEN | |
688 | #define CONSTRAINT_LEN(C,STR) DEFAULT_CONSTRAINT_LEN (C, STR) | |
689 | #endif | |
690 | ||
691 | #if defined (CONST_OK_FOR_LETTER_P) && ! defined (CONST_OK_FOR_CONSTRAINT_P) | |
692 | #define CONST_OK_FOR_CONSTRAINT_P(VAL,C,STR) CONST_OK_FOR_LETTER_P (VAL, C) | |
693 | #endif | |
694 | ||
695 | #if defined (CONST_DOUBLE_OK_FOR_LETTER_P) && ! defined (CONST_DOUBLE_OK_FOR_CONSTRAINT_P) | |
696 | #define CONST_DOUBLE_OK_FOR_CONSTRAINT_P(OP,C,STR) \ | |
697 | CONST_DOUBLE_OK_FOR_LETTER_P (OP, C) | |
698 | #endif | |
699 | ||
3ff5ef1b | 700 | #ifndef REG_CLASS_FROM_CONSTRAINT |
97488870 | 701 | #define REG_CLASS_FROM_CONSTRAINT(C,STR) REG_CLASS_FROM_LETTER (C) |
3ff5ef1b | 702 | #endif |
97488870 R |
703 | |
704 | #if defined (EXTRA_CONSTRAINT) && ! defined (EXTRA_CONSTRAINT_STR) | |
705 | #define EXTRA_CONSTRAINT_STR(OP, C,STR) EXTRA_CONSTRAINT (OP, C) | |
ccfc6cc8 UW |
706 | #endif |
707 | ||
37706dd1 HPN |
708 | #ifndef REGISTER_MOVE_COST |
709 | #define REGISTER_MOVE_COST(m, x, y) 2 | |
710 | #endif | |
711 | ||
272f51a3 JH |
712 | /* Determine whether the the entire c99 runtime |
713 | is present in the runtime library. */ | |
714 | #ifndef TARGET_C99_FUNCTIONS | |
715 | #define TARGET_C99_FUNCTIONS 0 | |
716 | #endif | |
717 | ||
7dba8395 | 718 | /* Indicate that CLZ and CTZ are undefined at zero. */ |
f676971a | 719 | #ifndef CLZ_DEFINED_VALUE_AT_ZERO |
7dba8395 RH |
720 | #define CLZ_DEFINED_VALUE_AT_ZERO(MODE, VALUE) 0 |
721 | #endif | |
f676971a | 722 | #ifndef CTZ_DEFINED_VALUE_AT_ZERO |
7dba8395 RH |
723 | #define CTZ_DEFINED_VALUE_AT_ZERO(MODE, VALUE) 0 |
724 | #endif | |
725 | ||
06f31100 RS |
726 | /* Provide a default value for STORE_FLAG_VALUE. */ |
727 | #ifndef STORE_FLAG_VALUE | |
728 | #define STORE_FLAG_VALUE 1 | |
729 | #endif | |
730 | ||
436bcda1 GK |
731 | /* This macro is used to determine what the largest unit size that |
732 | move_by_pieces can use is. */ | |
733 | ||
734 | /* MOVE_MAX_PIECES is the number of bytes at a time which we can | |
735 | move efficiently, as opposed to MOVE_MAX which is the maximum | |
736 | number of bytes we can move with a single instruction. */ | |
737 | ||
738 | #ifndef MOVE_MAX_PIECES | |
739 | #define MOVE_MAX_PIECES MOVE_MAX | |
740 | #endif | |
741 | ||
a594a19c GK |
742 | #ifndef STACK_POINTER_OFFSET |
743 | #define STACK_POINTER_OFFSET 0 | |
744 | #endif | |
745 | ||
cca8fb0e KH |
746 | #ifndef LOCAL_REGNO |
747 | #define LOCAL_REGNO(REGNO) 0 | |
748 | #endif | |
749 | ||
9d05bbce KH |
750 | /* EXIT_IGNORE_STACK should be nonzero if, when returning from a function, |
751 | the stack pointer does not matter. The value is tested only in | |
752 | functions that have frame pointers. */ | |
753 | #ifndef EXIT_IGNORE_STACK | |
754 | #define EXIT_IGNORE_STACK 0 | |
755 | #endif | |
756 | ||
0ede749d KH |
757 | /* Assume that case vectors are not pc-relative. */ |
758 | #ifndef CASE_VECTOR_PC_RELATIVE | |
759 | #define CASE_VECTOR_PC_RELATIVE 0 | |
760 | #endif | |
761 | ||
6de9cd9a DN |
762 | /* Assume that trampolines need function alignment. */ |
763 | #ifndef TRAMPOLINE_ALIGNMENT | |
764 | #define TRAMPOLINE_ALIGNMENT FUNCTION_BOUNDARY | |
765 | #endif | |
766 | ||
d220de0e KH |
767 | /* Register mappings for target machines without register windows. */ |
768 | #ifndef INCOMING_REGNO | |
769 | #define INCOMING_REGNO(N) (N) | |
770 | #endif | |
771 | ||
772 | #ifndef OUTGOING_REGNO | |
773 | #define OUTGOING_REGNO(N) (N) | |
774 | #endif | |
775 | ||
bee07d3f KH |
776 | #ifndef SHIFT_COUNT_TRUNCATED |
777 | #define SHIFT_COUNT_TRUNCATED 0 | |
778 | #endif | |
779 | ||
3e759eda KH |
780 | #ifndef LEGITIMIZE_ADDRESS |
781 | #define LEGITIMIZE_ADDRESS(X, OLDX, MODE, WIN) | |
782 | #endif | |
783 | ||
2e4e72b1 ZW |
784 | #ifndef LEGITIMATE_PIC_OPERAND_P |
785 | #define LEGITIMATE_PIC_OPERAND_P(X) 1 | |
786 | #endif | |
787 | ||
1f8551b2 KH |
788 | #ifndef REVERSIBLE_CC_MODE |
789 | #define REVERSIBLE_CC_MODE(MODE) 0 | |
790 | #endif | |
791 | ||
07e15286 DE |
792 | /* Biggest alignment supported by the object file format of this machine. */ |
793 | #ifndef MAX_OFILE_ALIGNMENT | |
794 | #define MAX_OFILE_ALIGNMENT BIGGEST_ALIGNMENT | |
795 | #endif | |
796 | ||
88657302 | 797 | #endif /* ! GCC_DEFAULTS_H */ |