* gcc.dg/store-motion-fgcse-sm.c (dg-final): Cleanup
[official-gcc.git] / gcc / defaults.h
blobd2609e761c2e91ad24fd5472a81c2ca6e5c257a4
1 /* Definitions of various defaults for tm.h macros.
2 Copyright (C) 1992-2014 Free Software Foundation, Inc.
3 Contributed by Ron Guilmette (rfg@monkeys.com)
5 This file is part of GCC.
7 GCC is free software; you can redistribute it and/or modify it under
8 the terms of the GNU General Public License as published by the Free
9 Software Foundation; either version 3, or (at your option) any later
10 version.
12 GCC is distributed in the hope that it will be useful, but WITHOUT ANY
13 WARRANTY; without even the implied warranty of MERCHANTABILITY or
14 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
15 for more details.
17 Under Section 7 of GPL version 3, you are granted additional
18 permissions described in the GCC Runtime Library Exception, version
19 3.1, as published by the Free Software Foundation.
21 You should have received a copy of the GNU General Public License and
22 a copy of the GCC Runtime Library Exception along with this program;
23 see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
24 <http://www.gnu.org/licenses/>. */
26 #ifndef GCC_DEFAULTS_H
27 #define GCC_DEFAULTS_H
29 /* How to start an assembler comment. */
30 #ifndef ASM_COMMENT_START
31 #define ASM_COMMENT_START ";#"
32 #endif
34 /* Store in OUTPUT a string (made with alloca) containing an
35 assembler-name for a local static variable or function named NAME.
36 LABELNO is an integer which is different for each call. */
38 #ifndef ASM_PN_FORMAT
39 # ifndef NO_DOT_IN_LABEL
40 # define ASM_PN_FORMAT "%s.%lu"
41 # else
42 # ifndef NO_DOLLAR_IN_LABEL
43 # define ASM_PN_FORMAT "%s$%lu"
44 # else
45 # define ASM_PN_FORMAT "__%s_%lu"
46 # endif
47 # endif
48 #endif /* ! ASM_PN_FORMAT */
50 #ifndef ASM_FORMAT_PRIVATE_NAME
51 # define ASM_FORMAT_PRIVATE_NAME(OUTPUT, NAME, LABELNO) \
52 do { const char *const name_ = (NAME); \
53 char *const output_ = (OUTPUT) = \
54 (char *) alloca (strlen (name_) + 32); \
55 sprintf (output_, ASM_PN_FORMAT, name_, (unsigned long)(LABELNO)); \
56 } while (0)
57 #endif
59 /* Choose a reasonable default for ASM_OUTPUT_ASCII. */
61 #ifndef ASM_OUTPUT_ASCII
62 #define ASM_OUTPUT_ASCII(MYFILE, MYSTRING, MYLENGTH) \
63 do { \
64 FILE *_hide_asm_out_file = (MYFILE); \
65 const unsigned char *_hide_p = (const unsigned char *) (MYSTRING); \
66 int _hide_thissize = (MYLENGTH); \
67 { \
68 FILE *asm_out_file = _hide_asm_out_file; \
69 const unsigned char *p = _hide_p; \
70 int thissize = _hide_thissize; \
71 int i; \
72 fprintf (asm_out_file, "\t.ascii \""); \
74 for (i = 0; i < thissize; i++) \
75 { \
76 int c = p[i]; \
77 if (c == '\"' || c == '\\') \
78 putc ('\\', asm_out_file); \
79 if (ISPRINT (c)) \
80 putc (c, asm_out_file); \
81 else \
82 { \
83 fprintf (asm_out_file, "\\%o", c); \
84 /* After an octal-escape, if a digit follows, \
85 terminate one string constant and start another. \
86 The VAX assembler fails to stop reading the escape \
87 after three digits, so this is the only way we \
88 can get it to parse the data properly. */ \
89 if (i < thissize - 1 && ISDIGIT (p[i + 1])) \
90 fprintf (asm_out_file, "\"\n\t.ascii \""); \
91 } \
92 } \
93 fprintf (asm_out_file, "\"\n"); \
94 } \
95 } \
96 while (0)
97 #endif
99 /* This is how we tell the assembler to equate two values. */
100 #ifdef SET_ASM_OP
101 #ifndef ASM_OUTPUT_DEF
102 #define ASM_OUTPUT_DEF(FILE,LABEL1,LABEL2) \
103 do { fprintf ((FILE), "%s", SET_ASM_OP); \
104 assemble_name (FILE, LABEL1); \
105 fprintf (FILE, ","); \
106 assemble_name (FILE, LABEL2); \
107 fprintf (FILE, "\n"); \
108 } while (0)
109 #endif
110 #endif
112 #ifndef IFUNC_ASM_TYPE
113 #define IFUNC_ASM_TYPE "gnu_indirect_function"
114 #endif
116 #ifndef TLS_COMMON_ASM_OP
117 #define TLS_COMMON_ASM_OP ".tls_common"
118 #endif
120 #if defined (HAVE_AS_TLS) && !defined (ASM_OUTPUT_TLS_COMMON)
121 #define ASM_OUTPUT_TLS_COMMON(FILE, DECL, NAME, SIZE) \
122 do \
124 fprintf ((FILE), "\t%s\t", TLS_COMMON_ASM_OP); \
125 assemble_name ((FILE), (NAME)); \
126 fprintf ((FILE), ","HOST_WIDE_INT_PRINT_UNSIGNED",%u\n", \
127 (SIZE), DECL_ALIGN (DECL) / BITS_PER_UNIT); \
129 while (0)
130 #endif
132 /* Decide whether to defer emitting the assembler output for an equate
133 of two values. The default is to not defer output. */
134 #ifndef TARGET_DEFERRED_OUTPUT_DEFS
135 #define TARGET_DEFERRED_OUTPUT_DEFS(DECL,TARGET) false
136 #endif
138 /* This is how to output the definition of a user-level label named
139 NAME, such as the label on variable NAME. */
141 #ifndef ASM_OUTPUT_LABEL
142 #define ASM_OUTPUT_LABEL(FILE,NAME) \
143 do { \
144 assemble_name ((FILE), (NAME)); \
145 fputs (":\n", (FILE)); \
146 } while (0)
147 #endif
149 /* This is how to output the definition of a user-level label named
150 NAME, such as the label on a function. */
152 #ifndef ASM_OUTPUT_FUNCTION_LABEL
153 #define ASM_OUTPUT_FUNCTION_LABEL(FILE, NAME, DECL) \
154 ASM_OUTPUT_LABEL ((FILE), (NAME))
155 #endif
157 /* Output the definition of a compiler-generated label named NAME. */
158 #ifndef ASM_OUTPUT_INTERNAL_LABEL
159 #define ASM_OUTPUT_INTERNAL_LABEL(FILE,NAME) \
160 do { \
161 assemble_name_raw ((FILE), (NAME)); \
162 fputs (":\n", (FILE)); \
163 } while (0)
164 #endif
166 /* This is how to output a reference to a user-level label named NAME. */
168 #ifndef ASM_OUTPUT_LABELREF
169 #define ASM_OUTPUT_LABELREF(FILE,NAME) \
170 do { \
171 fputs (user_label_prefix, (FILE)); \
172 fputs ((NAME), (FILE)); \
173 } while (0);
174 #endif
176 /* Allow target to print debug info labels specially. This is useful for
177 VLIW targets, since debug info labels should go into the middle of
178 instruction bundles instead of breaking them. */
180 #ifndef ASM_OUTPUT_DEBUG_LABEL
181 #define ASM_OUTPUT_DEBUG_LABEL(FILE, PREFIX, NUM) \
182 (*targetm.asm_out.internal_label) (FILE, PREFIX, NUM)
183 #endif
185 /* This is how we tell the assembler that a symbol is weak. */
186 #ifndef ASM_OUTPUT_WEAK_ALIAS
187 #if defined (ASM_WEAKEN_LABEL) && defined (ASM_OUTPUT_DEF)
188 #define ASM_OUTPUT_WEAK_ALIAS(STREAM, NAME, VALUE) \
189 do \
191 ASM_WEAKEN_LABEL (STREAM, NAME); \
192 if (VALUE) \
193 ASM_OUTPUT_DEF (STREAM, NAME, VALUE); \
195 while (0)
196 #endif
197 #endif
199 /* This is how we tell the assembler that a symbol is a weak alias to
200 another symbol that doesn't require the other symbol to be defined.
201 Uses of the former will turn into weak uses of the latter, i.e.,
202 uses that, in case the latter is undefined, will not cause errors,
203 and will add it to the symbol table as weak undefined. However, if
204 the latter is referenced directly, a strong reference prevails. */
205 #ifndef ASM_OUTPUT_WEAKREF
206 #if defined HAVE_GAS_WEAKREF
207 #define ASM_OUTPUT_WEAKREF(FILE, DECL, NAME, VALUE) \
208 do \
210 fprintf ((FILE), "\t.weakref\t"); \
211 assemble_name ((FILE), (NAME)); \
212 fprintf ((FILE), ","); \
213 assemble_name ((FILE), (VALUE)); \
214 fprintf ((FILE), "\n"); \
216 while (0)
217 #endif
218 #endif
220 /* How to emit a .type directive. */
221 #ifndef ASM_OUTPUT_TYPE_DIRECTIVE
222 #if defined TYPE_ASM_OP && defined TYPE_OPERAND_FMT
223 #define ASM_OUTPUT_TYPE_DIRECTIVE(STREAM, NAME, TYPE) \
224 do \
226 fputs (TYPE_ASM_OP, STREAM); \
227 assemble_name (STREAM, NAME); \
228 fputs (", ", STREAM); \
229 fprintf (STREAM, TYPE_OPERAND_FMT, TYPE); \
230 putc ('\n', STREAM); \
232 while (0)
233 #endif
234 #endif
236 /* How to emit a .size directive. */
237 #ifndef ASM_OUTPUT_SIZE_DIRECTIVE
238 #ifdef SIZE_ASM_OP
239 #define ASM_OUTPUT_SIZE_DIRECTIVE(STREAM, NAME, SIZE) \
240 do \
242 HOST_WIDE_INT size_ = (SIZE); \
243 fputs (SIZE_ASM_OP, STREAM); \
244 assemble_name (STREAM, NAME); \
245 fprintf (STREAM, ", " HOST_WIDE_INT_PRINT_DEC "\n", size_); \
247 while (0)
249 #define ASM_OUTPUT_MEASURED_SIZE(STREAM, NAME) \
250 do \
252 fputs (SIZE_ASM_OP, STREAM); \
253 assemble_name (STREAM, NAME); \
254 fputs (", .-", STREAM); \
255 assemble_name (STREAM, NAME); \
256 putc ('\n', STREAM); \
258 while (0)
260 #endif
261 #endif
263 /* This determines whether or not we support weak symbols. SUPPORTS_WEAK
264 must be a preprocessor constant. */
265 #ifndef SUPPORTS_WEAK
266 #if defined (ASM_WEAKEN_LABEL) || defined (ASM_WEAKEN_DECL)
267 #define SUPPORTS_WEAK 1
268 #else
269 #define SUPPORTS_WEAK 0
270 #endif
271 #endif
273 /* This determines whether or not we support weak symbols during target
274 code generation. TARGET_SUPPORTS_WEAK can be any valid C expression. */
275 #ifndef TARGET_SUPPORTS_WEAK
276 #define TARGET_SUPPORTS_WEAK (SUPPORTS_WEAK)
277 #endif
279 /* This determines whether or not we support the discriminator
280 attribute in the .loc directive. */
281 #ifndef SUPPORTS_DISCRIMINATOR
282 #ifdef HAVE_GAS_DISCRIMINATOR
283 #define SUPPORTS_DISCRIMINATOR 1
284 #else
285 #define SUPPORTS_DISCRIMINATOR 0
286 #endif
287 #endif
289 /* This determines whether or not we support link-once semantics. */
290 #ifndef SUPPORTS_ONE_ONLY
291 #ifdef MAKE_DECL_ONE_ONLY
292 #define SUPPORTS_ONE_ONLY 1
293 #else
294 #define SUPPORTS_ONE_ONLY 0
295 #endif
296 #endif
298 /* This determines whether weak symbols must be left out of a static
299 archive's table of contents. Defining this macro to be nonzero has
300 the consequence that certain symbols will not be made weak that
301 otherwise would be. The C++ ABI requires this macro to be zero;
302 see the documentation. */
303 #ifndef TARGET_WEAK_NOT_IN_ARCHIVE_TOC
304 #define TARGET_WEAK_NOT_IN_ARCHIVE_TOC 0
305 #endif
307 /* This determines whether or not we need linkonce unwind information. */
308 #ifndef TARGET_USES_WEAK_UNWIND_INFO
309 #define TARGET_USES_WEAK_UNWIND_INFO 0
310 #endif
312 /* By default, there is no prefix on user-defined symbols. */
313 #ifndef USER_LABEL_PREFIX
314 #define USER_LABEL_PREFIX ""
315 #endif
317 /* If the target supports weak symbols, define TARGET_ATTRIBUTE_WEAK to
318 provide a weak attribute. Else define it to nothing.
320 This would normally belong in ansidecl.h, but SUPPORTS_WEAK is
321 not available at that time.
323 Note, this is only for use by target files which we know are to be
324 compiled by GCC. */
325 #ifndef TARGET_ATTRIBUTE_WEAK
326 # if SUPPORTS_WEAK
327 # define TARGET_ATTRIBUTE_WEAK __attribute__ ((weak))
328 # else
329 # define TARGET_ATTRIBUTE_WEAK
330 # endif
331 #endif
333 /* By default we can assume that all global symbols are in one namespace,
334 across all shared libraries. */
335 #ifndef MULTIPLE_SYMBOL_SPACES
336 # define MULTIPLE_SYMBOL_SPACES 0
337 #endif
339 /* If the target supports init_priority C++ attribute, give
340 SUPPORTS_INIT_PRIORITY a nonzero value. */
341 #ifndef SUPPORTS_INIT_PRIORITY
342 #define SUPPORTS_INIT_PRIORITY 1
343 #endif /* SUPPORTS_INIT_PRIORITY */
345 /* If we have a definition of INCOMING_RETURN_ADDR_RTX, assume that
346 the rest of the DWARF 2 frame unwind support is also provided. */
347 #if !defined (DWARF2_UNWIND_INFO) && defined (INCOMING_RETURN_ADDR_RTX)
348 #define DWARF2_UNWIND_INFO 1
349 #endif
351 /* If we have named sections, and we're using crtstuff to run ctors,
352 use them for registering eh frame information. */
353 #if defined (TARGET_ASM_NAMED_SECTION) && DWARF2_UNWIND_INFO \
354 && !defined (EH_FRAME_IN_DATA_SECTION)
355 #ifndef EH_FRAME_SECTION_NAME
356 #define EH_FRAME_SECTION_NAME ".eh_frame"
357 #endif
358 #endif
360 /* On many systems, different EH table encodings are used under
361 difference circumstances. Some will require runtime relocations;
362 some will not. For those that do not require runtime relocations,
363 we would like to make the table read-only. However, since the
364 read-only tables may need to be combined with read-write tables
365 that do require runtime relocation, it is not safe to make the
366 tables read-only unless the linker will merge read-only and
367 read-write sections into a single read-write section. If your
368 linker does not have this ability, but your system is such that no
369 encoding used with non-PIC code will ever require a runtime
370 relocation, then you can define EH_TABLES_CAN_BE_READ_ONLY to 1 in
371 your target configuration file. */
372 #ifndef EH_TABLES_CAN_BE_READ_ONLY
373 #ifdef HAVE_LD_RO_RW_SECTION_MIXING
374 #define EH_TABLES_CAN_BE_READ_ONLY 1
375 #else
376 #define EH_TABLES_CAN_BE_READ_ONLY 0
377 #endif
378 #endif
380 /* If we have named section and we support weak symbols, then use the
381 .jcr section for recording java classes which need to be registered
382 at program start-up time. */
383 #if defined (TARGET_ASM_NAMED_SECTION) && SUPPORTS_WEAK
384 #ifndef JCR_SECTION_NAME
385 #define JCR_SECTION_NAME ".jcr"
386 #endif
387 #endif
389 /* This decision to use a .jcr section can be overridden by defining
390 USE_JCR_SECTION to 0 in target file. This is necessary if target
391 can define JCR_SECTION_NAME but does not have crtstuff or
392 linker support for .jcr section. */
393 #ifndef TARGET_USE_JCR_SECTION
394 #ifdef JCR_SECTION_NAME
395 #define TARGET_USE_JCR_SECTION 1
396 #else
397 #define TARGET_USE_JCR_SECTION 0
398 #endif
399 #endif
401 /* Number of hardware registers that go into the DWARF-2 unwind info.
402 If not defined, equals FIRST_PSEUDO_REGISTER */
404 #ifndef DWARF_FRAME_REGISTERS
405 #define DWARF_FRAME_REGISTERS FIRST_PSEUDO_REGISTER
406 #endif
408 /* Offsets recorded in opcodes are a multiple of this alignment factor. */
409 #ifndef DWARF_CIE_DATA_ALIGNMENT
410 #ifdef STACK_GROWS_DOWNWARD
411 #define DWARF_CIE_DATA_ALIGNMENT (-((int) UNITS_PER_WORD))
412 #else
413 #define DWARF_CIE_DATA_ALIGNMENT ((int) UNITS_PER_WORD)
414 #endif
415 #endif
417 /* The DWARF 2 CFA column which tracks the return address. Normally this
418 is the column for PC, or the first column after all of the hard
419 registers. */
420 #ifndef DWARF_FRAME_RETURN_COLUMN
421 #ifdef PC_REGNUM
422 #define DWARF_FRAME_RETURN_COLUMN DWARF_FRAME_REGNUM (PC_REGNUM)
423 #else
424 #define DWARF_FRAME_RETURN_COLUMN DWARF_FRAME_REGISTERS
425 #endif
426 #endif
428 /* How to renumber registers for dbx and gdb. If not defined, assume
429 no renumbering is necessary. */
431 #ifndef DBX_REGISTER_NUMBER
432 #define DBX_REGISTER_NUMBER(REGNO) (REGNO)
433 #endif
435 /* The mapping from gcc register number to DWARF 2 CFA column number.
436 By default, we just provide columns for all registers. */
437 #ifndef DWARF_FRAME_REGNUM
438 #define DWARF_FRAME_REGNUM(REG) DBX_REGISTER_NUMBER (REG)
439 #endif
441 /* Map register numbers held in the call frame info that gcc has
442 collected using DWARF_FRAME_REGNUM to those that should be output in
443 .debug_frame and .eh_frame. */
444 #ifndef DWARF2_FRAME_REG_OUT
445 #define DWARF2_FRAME_REG_OUT(REGNO, FOR_EH) (REGNO)
446 #endif
448 /* The size of addresses as they appear in the Dwarf 2 data.
449 Some architectures use word addresses to refer to code locations,
450 but Dwarf 2 info always uses byte addresses. On such machines,
451 Dwarf 2 addresses need to be larger than the architecture's
452 pointers. */
453 #ifndef DWARF2_ADDR_SIZE
454 #define DWARF2_ADDR_SIZE ((POINTER_SIZE + BITS_PER_UNIT - 1) / BITS_PER_UNIT)
455 #endif
457 /* The size in bytes of a DWARF field indicating an offset or length
458 relative to a debug info section, specified to be 4 bytes in the
459 DWARF-2 specification. The SGI/MIPS ABI defines it to be the same
460 as PTR_SIZE. */
461 #ifndef DWARF_OFFSET_SIZE
462 #define DWARF_OFFSET_SIZE 4
463 #endif
465 /* The size in bytes of a DWARF 4 type signature. */
466 #ifndef DWARF_TYPE_SIGNATURE_SIZE
467 #define DWARF_TYPE_SIGNATURE_SIZE 8
468 #endif
470 /* Default sizes for base C types. If the sizes are different for
471 your target, you should override these values by defining the
472 appropriate symbols in your tm.h file. */
474 #if BITS_PER_UNIT == 8
475 #define LOG2_BITS_PER_UNIT 3
476 #elif BITS_PER_UNIT == 16
477 #define LOG2_BITS_PER_UNIT 4
478 #else
479 #error Unknown BITS_PER_UNIT
480 #endif
482 #ifndef BITS_PER_WORD
483 #define BITS_PER_WORD (BITS_PER_UNIT * UNITS_PER_WORD)
484 #endif
486 #ifndef CHAR_TYPE_SIZE
487 #define CHAR_TYPE_SIZE BITS_PER_UNIT
488 #endif
490 #ifndef BOOL_TYPE_SIZE
491 /* `bool' has size and alignment `1', on almost all platforms. */
492 #define BOOL_TYPE_SIZE CHAR_TYPE_SIZE
493 #endif
495 #ifndef SHORT_TYPE_SIZE
496 #define SHORT_TYPE_SIZE (BITS_PER_UNIT * MIN ((UNITS_PER_WORD + 1) / 2, 2))
497 #endif
499 #ifndef INT_TYPE_SIZE
500 #define INT_TYPE_SIZE BITS_PER_WORD
501 #endif
503 #ifndef LONG_TYPE_SIZE
504 #define LONG_TYPE_SIZE BITS_PER_WORD
505 #endif
507 #ifndef LONG_LONG_TYPE_SIZE
508 #define LONG_LONG_TYPE_SIZE (BITS_PER_WORD * 2)
509 #endif
511 #ifndef WCHAR_TYPE_SIZE
512 #define WCHAR_TYPE_SIZE INT_TYPE_SIZE
513 #endif
515 #ifndef FLOAT_TYPE_SIZE
516 #define FLOAT_TYPE_SIZE BITS_PER_WORD
517 #endif
519 #ifndef DOUBLE_TYPE_SIZE
520 #define DOUBLE_TYPE_SIZE (BITS_PER_WORD * 2)
521 #endif
523 #ifndef LONG_DOUBLE_TYPE_SIZE
524 #define LONG_DOUBLE_TYPE_SIZE (BITS_PER_WORD * 2)
525 #endif
527 #ifndef DECIMAL32_TYPE_SIZE
528 #define DECIMAL32_TYPE_SIZE 32
529 #endif
531 #ifndef DECIMAL64_TYPE_SIZE
532 #define DECIMAL64_TYPE_SIZE 64
533 #endif
535 #ifndef DECIMAL128_TYPE_SIZE
536 #define DECIMAL128_TYPE_SIZE 128
537 #endif
539 #ifndef SHORT_FRACT_TYPE_SIZE
540 #define SHORT_FRACT_TYPE_SIZE BITS_PER_UNIT
541 #endif
543 #ifndef FRACT_TYPE_SIZE
544 #define FRACT_TYPE_SIZE (BITS_PER_UNIT * 2)
545 #endif
547 #ifndef LONG_FRACT_TYPE_SIZE
548 #define LONG_FRACT_TYPE_SIZE (BITS_PER_UNIT * 4)
549 #endif
551 #ifndef LONG_LONG_FRACT_TYPE_SIZE
552 #define LONG_LONG_FRACT_TYPE_SIZE (BITS_PER_UNIT * 8)
553 #endif
555 #ifndef SHORT_ACCUM_TYPE_SIZE
556 #define SHORT_ACCUM_TYPE_SIZE (SHORT_FRACT_TYPE_SIZE * 2)
557 #endif
559 #ifndef ACCUM_TYPE_SIZE
560 #define ACCUM_TYPE_SIZE (FRACT_TYPE_SIZE * 2)
561 #endif
563 #ifndef LONG_ACCUM_TYPE_SIZE
564 #define LONG_ACCUM_TYPE_SIZE (LONG_FRACT_TYPE_SIZE * 2)
565 #endif
567 #ifndef LONG_LONG_ACCUM_TYPE_SIZE
568 #define LONG_LONG_ACCUM_TYPE_SIZE (LONG_LONG_FRACT_TYPE_SIZE * 2)
569 #endif
571 /* We let tm.h override the types used here, to handle trivial differences
572 such as the choice of unsigned int or long unsigned int for size_t.
573 When machines start needing nontrivial differences in the size type,
574 it would be best to do something here to figure out automatically
575 from other information what type to use. */
577 #ifndef SIZE_TYPE
578 #define SIZE_TYPE "long unsigned int"
579 #endif
581 #ifndef SIZETYPE
582 #define SIZETYPE SIZE_TYPE
583 #endif
585 #ifndef PID_TYPE
586 #define PID_TYPE "int"
587 #endif
589 /* If GCC knows the exact uint_least16_t and uint_least32_t types from
590 <stdint.h>, use them for char16_t and char32_t. Otherwise, use
591 these guesses; getting the wrong type of a given width will not
592 affect C++ name mangling because in C++ these are distinct types
593 not typedefs. */
595 #ifdef UINT_LEAST16_TYPE
596 #define CHAR16_TYPE UINT_LEAST16_TYPE
597 #else
598 #define CHAR16_TYPE "short unsigned int"
599 #endif
601 #ifdef UINT_LEAST32_TYPE
602 #define CHAR32_TYPE UINT_LEAST32_TYPE
603 #else
604 #define CHAR32_TYPE "unsigned int"
605 #endif
607 #ifndef WCHAR_TYPE
608 #define WCHAR_TYPE "int"
609 #endif
611 /* WCHAR_TYPE gets overridden by -fshort-wchar. */
612 #define MODIFIED_WCHAR_TYPE \
613 (flag_short_wchar ? "short unsigned int" : WCHAR_TYPE)
615 #ifndef PTRDIFF_TYPE
616 #define PTRDIFF_TYPE "long int"
617 #endif
619 #ifndef WINT_TYPE
620 #define WINT_TYPE "unsigned int"
621 #endif
623 #ifndef INTMAX_TYPE
624 #define INTMAX_TYPE ((INT_TYPE_SIZE == LONG_LONG_TYPE_SIZE) \
625 ? "int" \
626 : ((LONG_TYPE_SIZE == LONG_LONG_TYPE_SIZE) \
627 ? "long int" \
628 : "long long int"))
629 #endif
631 #ifndef UINTMAX_TYPE
632 #define UINTMAX_TYPE ((INT_TYPE_SIZE == LONG_LONG_TYPE_SIZE) \
633 ? "unsigned int" \
634 : ((LONG_TYPE_SIZE == LONG_LONG_TYPE_SIZE) \
635 ? "long unsigned int" \
636 : "long long unsigned int"))
637 #endif
640 /* There are no default definitions of these <stdint.h> types. */
642 #ifndef SIG_ATOMIC_TYPE
643 #define SIG_ATOMIC_TYPE ((const char *) NULL)
644 #endif
646 #ifndef INT8_TYPE
647 #define INT8_TYPE ((const char *) NULL)
648 #endif
650 #ifndef INT16_TYPE
651 #define INT16_TYPE ((const char *) NULL)
652 #endif
654 #ifndef INT32_TYPE
655 #define INT32_TYPE ((const char *) NULL)
656 #endif
658 #ifndef INT64_TYPE
659 #define INT64_TYPE ((const char *) NULL)
660 #endif
662 #ifndef UINT8_TYPE
663 #define UINT8_TYPE ((const char *) NULL)
664 #endif
666 #ifndef UINT16_TYPE
667 #define UINT16_TYPE ((const char *) NULL)
668 #endif
670 #ifndef UINT32_TYPE
671 #define UINT32_TYPE ((const char *) NULL)
672 #endif
674 #ifndef UINT64_TYPE
675 #define UINT64_TYPE ((const char *) NULL)
676 #endif
678 #ifndef INT_LEAST8_TYPE
679 #define INT_LEAST8_TYPE ((const char *) NULL)
680 #endif
682 #ifndef INT_LEAST16_TYPE
683 #define INT_LEAST16_TYPE ((const char *) NULL)
684 #endif
686 #ifndef INT_LEAST32_TYPE
687 #define INT_LEAST32_TYPE ((const char *) NULL)
688 #endif
690 #ifndef INT_LEAST64_TYPE
691 #define INT_LEAST64_TYPE ((const char *) NULL)
692 #endif
694 #ifndef UINT_LEAST8_TYPE
695 #define UINT_LEAST8_TYPE ((const char *) NULL)
696 #endif
698 #ifndef UINT_LEAST16_TYPE
699 #define UINT_LEAST16_TYPE ((const char *) NULL)
700 #endif
702 #ifndef UINT_LEAST32_TYPE
703 #define UINT_LEAST32_TYPE ((const char *) NULL)
704 #endif
706 #ifndef UINT_LEAST64_TYPE
707 #define UINT_LEAST64_TYPE ((const char *) NULL)
708 #endif
710 #ifndef INT_FAST8_TYPE
711 #define INT_FAST8_TYPE ((const char *) NULL)
712 #endif
714 #ifndef INT_FAST16_TYPE
715 #define INT_FAST16_TYPE ((const char *) NULL)
716 #endif
718 #ifndef INT_FAST32_TYPE
719 #define INT_FAST32_TYPE ((const char *) NULL)
720 #endif
722 #ifndef INT_FAST64_TYPE
723 #define INT_FAST64_TYPE ((const char *) NULL)
724 #endif
726 #ifndef UINT_FAST8_TYPE
727 #define UINT_FAST8_TYPE ((const char *) NULL)
728 #endif
730 #ifndef UINT_FAST16_TYPE
731 #define UINT_FAST16_TYPE ((const char *) NULL)
732 #endif
734 #ifndef UINT_FAST32_TYPE
735 #define UINT_FAST32_TYPE ((const char *) NULL)
736 #endif
738 #ifndef UINT_FAST64_TYPE
739 #define UINT_FAST64_TYPE ((const char *) NULL)
740 #endif
742 #ifndef INTPTR_TYPE
743 #define INTPTR_TYPE ((const char *) NULL)
744 #endif
746 #ifndef UINTPTR_TYPE
747 #define UINTPTR_TYPE ((const char *) NULL)
748 #endif
750 /* Width in bits of a pointer. Mind the value of the macro `Pmode'. */
751 #ifndef POINTER_SIZE
752 #define POINTER_SIZE BITS_PER_WORD
753 #endif
754 #ifndef POINTER_SIZE_UNITS
755 #define POINTER_SIZE_UNITS ((POINTER_SIZE + BITS_PER_UNIT - 1) / BITS_PER_UNIT)
756 #endif
759 #ifndef PIC_OFFSET_TABLE_REGNUM
760 #define PIC_OFFSET_TABLE_REGNUM INVALID_REGNUM
761 #endif
763 #ifndef PIC_OFFSET_TABLE_REG_CALL_CLOBBERED
764 #define PIC_OFFSET_TABLE_REG_CALL_CLOBBERED 0
765 #endif
767 #ifndef TARGET_DLLIMPORT_DECL_ATTRIBUTES
768 #define TARGET_DLLIMPORT_DECL_ATTRIBUTES 0
769 #endif
771 #ifndef TARGET_DECLSPEC
772 #if TARGET_DLLIMPORT_DECL_ATTRIBUTES
773 /* If the target supports the "dllimport" attribute, users are
774 probably used to the "__declspec" syntax. */
775 #define TARGET_DECLSPEC 1
776 #else
777 #define TARGET_DECLSPEC 0
778 #endif
779 #endif
781 /* By default, the preprocessor should be invoked the same way in C++
782 as in C. */
783 #ifndef CPLUSPLUS_CPP_SPEC
784 #ifdef CPP_SPEC
785 #define CPLUSPLUS_CPP_SPEC CPP_SPEC
786 #endif
787 #endif
789 #ifndef ACCUMULATE_OUTGOING_ARGS
790 #define ACCUMULATE_OUTGOING_ARGS 0
791 #endif
793 /* By default, use the GNU runtime for Objective C. */
794 #ifndef NEXT_OBJC_RUNTIME
795 #define NEXT_OBJC_RUNTIME 0
796 #endif
798 /* Supply a default definition for PUSH_ARGS. */
799 #ifndef PUSH_ARGS
800 #ifdef PUSH_ROUNDING
801 #define PUSH_ARGS !ACCUMULATE_OUTGOING_ARGS
802 #else
803 #define PUSH_ARGS 0
804 #endif
805 #endif
807 /* Decide whether a function's arguments should be processed
808 from first to last or from last to first.
810 They should if the stack and args grow in opposite directions, but
811 only if we have push insns. */
813 #ifdef PUSH_ROUNDING
815 #ifndef PUSH_ARGS_REVERSED
816 #if defined (STACK_GROWS_DOWNWARD) != defined (ARGS_GROW_DOWNWARD)
817 #define PUSH_ARGS_REVERSED PUSH_ARGS
818 #endif
819 #endif
821 #endif
823 #ifndef PUSH_ARGS_REVERSED
824 #define PUSH_ARGS_REVERSED 0
825 #endif
827 /* Default value for the alignment (in bits) a C conformant malloc has to
828 provide. This default is intended to be safe and always correct. */
829 #ifndef MALLOC_ABI_ALIGNMENT
830 #define MALLOC_ABI_ALIGNMENT BITS_PER_WORD
831 #endif
833 /* If PREFERRED_STACK_BOUNDARY is not defined, set it to STACK_BOUNDARY.
834 STACK_BOUNDARY is required. */
835 #ifndef PREFERRED_STACK_BOUNDARY
836 #define PREFERRED_STACK_BOUNDARY STACK_BOUNDARY
837 #endif
839 /* Set INCOMING_STACK_BOUNDARY to PREFERRED_STACK_BOUNDARY if it is not
840 defined. */
841 #ifndef INCOMING_STACK_BOUNDARY
842 #define INCOMING_STACK_BOUNDARY PREFERRED_STACK_BOUNDARY
843 #endif
845 #ifndef TARGET_DEFAULT_PACK_STRUCT
846 #define TARGET_DEFAULT_PACK_STRUCT 0
847 #endif
849 /* By default, the vtable entries are void pointers, the so the alignment
850 is the same as pointer alignment. The value of this macro specifies
851 the alignment of the vtable entry in bits. It should be defined only
852 when special alignment is necessary. */
853 #ifndef TARGET_VTABLE_ENTRY_ALIGN
854 #define TARGET_VTABLE_ENTRY_ALIGN POINTER_SIZE
855 #endif
857 /* There are a few non-descriptor entries in the vtable at offsets below
858 zero. If these entries must be padded (say, to preserve the alignment
859 specified by TARGET_VTABLE_ENTRY_ALIGN), set this to the number of
860 words in each data entry. */
861 #ifndef TARGET_VTABLE_DATA_ENTRY_DISTANCE
862 #define TARGET_VTABLE_DATA_ENTRY_DISTANCE 1
863 #endif
865 /* Decide whether it is safe to use a local alias for a virtual function
866 when constructing thunks. */
867 #ifndef TARGET_USE_LOCAL_THUNK_ALIAS_P
868 #ifdef ASM_OUTPUT_DEF
869 #define TARGET_USE_LOCAL_THUNK_ALIAS_P(DECL) 1
870 #else
871 #define TARGET_USE_LOCAL_THUNK_ALIAS_P(DECL) 0
872 #endif
873 #endif
875 /* Select a format to encode pointers in exception handling data. We
876 prefer those that result in fewer dynamic relocations. Assume no
877 special support here and encode direct references. */
878 #ifndef ASM_PREFERRED_EH_DATA_FORMAT
879 #define ASM_PREFERRED_EH_DATA_FORMAT(CODE,GLOBAL) DW_EH_PE_absptr
880 #endif
882 /* By default, the C++ compiler will use the lowest bit of the pointer
883 to function to indicate a pointer-to-member-function points to a
884 virtual member function. However, if FUNCTION_BOUNDARY indicates
885 function addresses aren't always even, the lowest bit of the delta
886 field will be used. */
887 #ifndef TARGET_PTRMEMFUNC_VBIT_LOCATION
888 #define TARGET_PTRMEMFUNC_VBIT_LOCATION \
889 (FUNCTION_BOUNDARY >= 2 * BITS_PER_UNIT \
890 ? ptrmemfunc_vbit_in_pfn : ptrmemfunc_vbit_in_delta)
891 #endif
893 #ifndef DEFAULT_GDB_EXTENSIONS
894 #define DEFAULT_GDB_EXTENSIONS 1
895 #endif
897 /* If more than one debugging type is supported, you must define
898 PREFERRED_DEBUGGING_TYPE to choose the default. */
900 #if 1 < (defined (DBX_DEBUGGING_INFO) + defined (SDB_DEBUGGING_INFO) \
901 + defined (DWARF2_DEBUGGING_INFO) + defined (XCOFF_DEBUGGING_INFO) \
902 + defined (VMS_DEBUGGING_INFO))
903 #ifndef PREFERRED_DEBUGGING_TYPE
904 #error You must define PREFERRED_DEBUGGING_TYPE
905 #endif /* no PREFERRED_DEBUGGING_TYPE */
907 /* If only one debugging format is supported, define PREFERRED_DEBUGGING_TYPE
908 here so other code needn't care. */
909 #elif defined DBX_DEBUGGING_INFO
910 #define PREFERRED_DEBUGGING_TYPE DBX_DEBUG
912 #elif defined SDB_DEBUGGING_INFO
913 #define PREFERRED_DEBUGGING_TYPE SDB_DEBUG
915 #elif defined DWARF2_DEBUGGING_INFO
916 #define PREFERRED_DEBUGGING_TYPE DWARF2_DEBUG
918 #elif defined VMS_DEBUGGING_INFO
919 #define PREFERRED_DEBUGGING_TYPE VMS_AND_DWARF2_DEBUG
921 #elif defined XCOFF_DEBUGGING_INFO
922 #define PREFERRED_DEBUGGING_TYPE XCOFF_DEBUG
924 #else
925 /* No debugging format is supported by this target. */
926 #define PREFERRED_DEBUGGING_TYPE NO_DEBUG
927 #endif
929 #ifndef FLOAT_LIB_COMPARE_RETURNS_BOOL
930 #define FLOAT_LIB_COMPARE_RETURNS_BOOL(MODE, COMPARISON) false
931 #endif
933 /* True if the targets integer-comparison functions return { 0, 1, 2
934 } to indicate { <, ==, > }. False if { -1, 0, 1 } is used
935 instead. The libgcc routines are biased. */
936 #ifndef TARGET_LIB_INT_CMP_BIASED
937 #define TARGET_LIB_INT_CMP_BIASED (true)
938 #endif
940 /* If FLOAT_WORDS_BIG_ENDIAN is not defined in the header files,
941 then the word-endianness is the same as for integers. */
942 #ifndef FLOAT_WORDS_BIG_ENDIAN
943 #define FLOAT_WORDS_BIG_ENDIAN WORDS_BIG_ENDIAN
944 #endif
946 #ifndef REG_WORDS_BIG_ENDIAN
947 #define REG_WORDS_BIG_ENDIAN WORDS_BIG_ENDIAN
948 #endif
950 #ifdef TARGET_FLT_EVAL_METHOD
951 #define TARGET_FLT_EVAL_METHOD_NON_DEFAULT 1
952 #else
953 #define TARGET_FLT_EVAL_METHOD 0
954 #define TARGET_FLT_EVAL_METHOD_NON_DEFAULT 0
955 #endif
957 #ifndef TARGET_DEC_EVAL_METHOD
958 #define TARGET_DEC_EVAL_METHOD 2
959 #endif
961 #ifndef HAS_LONG_COND_BRANCH
962 #define HAS_LONG_COND_BRANCH 0
963 #endif
965 #ifndef HAS_LONG_UNCOND_BRANCH
966 #define HAS_LONG_UNCOND_BRANCH 0
967 #endif
969 /* Determine whether __cxa_atexit, rather than atexit, is used to
970 register C++ destructors for local statics and global objects. */
971 #ifndef DEFAULT_USE_CXA_ATEXIT
972 #define DEFAULT_USE_CXA_ATEXIT 0
973 #endif
975 #if GCC_VERSION >= 3000 && defined IN_GCC
976 /* These old constraint macros shouldn't appear anywhere in a
977 configuration using MD constraint definitions. */
978 #endif
980 /* Determin whether the target runtime library is Bionic */
981 #ifndef TARGET_HAS_BIONIC
982 #define TARGET_HAS_BIONIC 0
983 #endif
985 /* Indicate that CLZ and CTZ are undefined at zero. */
986 #ifndef CLZ_DEFINED_VALUE_AT_ZERO
987 #define CLZ_DEFINED_VALUE_AT_ZERO(MODE, VALUE) 0
988 #endif
989 #ifndef CTZ_DEFINED_VALUE_AT_ZERO
990 #define CTZ_DEFINED_VALUE_AT_ZERO(MODE, VALUE) 0
991 #endif
993 /* Provide a default value for STORE_FLAG_VALUE. */
994 #ifndef STORE_FLAG_VALUE
995 #define STORE_FLAG_VALUE 1
996 #endif
998 /* This macro is used to determine what the largest unit size that
999 move_by_pieces can use is. */
1001 /* MOVE_MAX_PIECES is the number of bytes at a time which we can
1002 move efficiently, as opposed to MOVE_MAX which is the maximum
1003 number of bytes we can move with a single instruction. */
1005 #ifndef MOVE_MAX_PIECES
1006 #define MOVE_MAX_PIECES MOVE_MAX
1007 #endif
1009 /* STORE_MAX_PIECES is the number of bytes at a time that we can
1010 store efficiently. Due to internal GCC limitations, this is
1011 MOVE_MAX_PIECES limited by the number of bytes GCC can represent
1012 for an immediate constant. */
1014 #ifndef STORE_MAX_PIECES
1015 #define STORE_MAX_PIECES MIN (MOVE_MAX_PIECES, 2 * sizeof (HOST_WIDE_INT))
1016 #endif
1018 #ifndef MAX_MOVE_MAX
1019 #define MAX_MOVE_MAX MOVE_MAX
1020 #endif
1022 #ifndef MIN_UNITS_PER_WORD
1023 #define MIN_UNITS_PER_WORD UNITS_PER_WORD
1024 #endif
1026 #ifndef MAX_BITS_PER_WORD
1027 #define MAX_BITS_PER_WORD BITS_PER_WORD
1028 #endif
1030 #ifndef STACK_POINTER_OFFSET
1031 #define STACK_POINTER_OFFSET 0
1032 #endif
1034 #ifndef LOCAL_REGNO
1035 #define LOCAL_REGNO(REGNO) 0
1036 #endif
1038 #ifndef HONOR_REG_ALLOC_ORDER
1039 #define HONOR_REG_ALLOC_ORDER 0
1040 #endif
1042 /* EXIT_IGNORE_STACK should be nonzero if, when returning from a function,
1043 the stack pointer does not matter. The value is tested only in
1044 functions that have frame pointers. */
1045 #ifndef EXIT_IGNORE_STACK
1046 #define EXIT_IGNORE_STACK 0
1047 #endif
1049 /* Assume that case vectors are not pc-relative. */
1050 #ifndef CASE_VECTOR_PC_RELATIVE
1051 #define CASE_VECTOR_PC_RELATIVE 0
1052 #endif
1054 /* Assume that trampolines need function alignment. */
1055 #ifndef TRAMPOLINE_ALIGNMENT
1056 #define TRAMPOLINE_ALIGNMENT FUNCTION_BOUNDARY
1057 #endif
1059 /* Register mappings for target machines without register windows. */
1060 #ifndef INCOMING_REGNO
1061 #define INCOMING_REGNO(N) (N)
1062 #endif
1064 #ifndef OUTGOING_REGNO
1065 #define OUTGOING_REGNO(N) (N)
1066 #endif
1068 #ifndef SHIFT_COUNT_TRUNCATED
1069 #define SHIFT_COUNT_TRUNCATED 0
1070 #endif
1072 #ifndef LEGITIMATE_PIC_OPERAND_P
1073 #define LEGITIMATE_PIC_OPERAND_P(X) 1
1074 #endif
1076 #ifndef TARGET_MEM_CONSTRAINT
1077 #define TARGET_MEM_CONSTRAINT 'm'
1078 #endif
1080 #ifndef REVERSIBLE_CC_MODE
1081 #define REVERSIBLE_CC_MODE(MODE) 0
1082 #endif
1084 /* Biggest alignment supported by the object file format of this machine. */
1085 #ifndef MAX_OFILE_ALIGNMENT
1086 #define MAX_OFILE_ALIGNMENT BIGGEST_ALIGNMENT
1087 #endif
1089 #ifndef FRAME_GROWS_DOWNWARD
1090 #define FRAME_GROWS_DOWNWARD 0
1091 #endif
1093 /* On most machines, the CFA coincides with the first incoming parm. */
1094 #ifndef ARG_POINTER_CFA_OFFSET
1095 #define ARG_POINTER_CFA_OFFSET(FNDECL) \
1096 (FIRST_PARM_OFFSET (FNDECL) + crtl->args.pretend_args_size)
1097 #endif
1099 /* On most machines, we use the CFA as DW_AT_frame_base. */
1100 #ifndef CFA_FRAME_BASE_OFFSET
1101 #define CFA_FRAME_BASE_OFFSET(FNDECL) 0
1102 #endif
1104 /* The offset from the incoming value of %sp to the top of the stack frame
1105 for the current function. */
1106 #ifndef INCOMING_FRAME_SP_OFFSET
1107 #define INCOMING_FRAME_SP_OFFSET 0
1108 #endif
1110 #ifndef HARD_REGNO_NREGS_HAS_PADDING
1111 #define HARD_REGNO_NREGS_HAS_PADDING(REGNO, MODE) 0
1112 #define HARD_REGNO_NREGS_WITH_PADDING(REGNO, MODE) -1
1113 #endif
1115 #ifndef OUTGOING_REG_PARM_STACK_SPACE
1116 #define OUTGOING_REG_PARM_STACK_SPACE(FNTYPE) 0
1117 #endif
1119 /* MAX_STACK_ALIGNMENT is the maximum stack alignment guaranteed by
1120 the backend. MAX_SUPPORTED_STACK_ALIGNMENT is the maximum best
1121 effort stack alignment supported by the backend. If the backend
1122 supports stack alignment, MAX_SUPPORTED_STACK_ALIGNMENT and
1123 MAX_STACK_ALIGNMENT are the same. Otherwise, the incoming stack
1124 boundary will limit the maximum guaranteed stack alignment. */
1125 #ifdef MAX_STACK_ALIGNMENT
1126 #define MAX_SUPPORTED_STACK_ALIGNMENT MAX_STACK_ALIGNMENT
1127 #else
1128 #define MAX_STACK_ALIGNMENT STACK_BOUNDARY
1129 #define MAX_SUPPORTED_STACK_ALIGNMENT PREFERRED_STACK_BOUNDARY
1130 #endif
1132 #define SUPPORTS_STACK_ALIGNMENT (MAX_STACK_ALIGNMENT > STACK_BOUNDARY)
1134 #ifndef LOCAL_ALIGNMENT
1135 #define LOCAL_ALIGNMENT(TYPE, ALIGNMENT) ALIGNMENT
1136 #endif
1138 #ifndef STACK_SLOT_ALIGNMENT
1139 #define STACK_SLOT_ALIGNMENT(TYPE,MODE,ALIGN) \
1140 ((TYPE) ? LOCAL_ALIGNMENT ((TYPE), (ALIGN)) : (ALIGN))
1141 #endif
1143 #ifndef LOCAL_DECL_ALIGNMENT
1144 #define LOCAL_DECL_ALIGNMENT(DECL) \
1145 LOCAL_ALIGNMENT (TREE_TYPE (DECL), DECL_ALIGN (DECL))
1146 #endif
1148 #ifndef MINIMUM_ALIGNMENT
1149 #define MINIMUM_ALIGNMENT(EXP,MODE,ALIGN) (ALIGN)
1150 #endif
1152 /* Alignment value for attribute ((aligned)). */
1153 #ifndef ATTRIBUTE_ALIGNED_VALUE
1154 #define ATTRIBUTE_ALIGNED_VALUE BIGGEST_ALIGNMENT
1155 #endif
1157 #ifndef SLOW_UNALIGNED_ACCESS
1158 #define SLOW_UNALIGNED_ACCESS(MODE, ALIGN) STRICT_ALIGNMENT
1159 #endif
1161 /* For most ports anything that evaluates to a constant symbolic
1162 or integer value is acceptable as a constant address. */
1163 #ifndef CONSTANT_ADDRESS_P
1164 #define CONSTANT_ADDRESS_P(X) (CONSTANT_P (X) && GET_CODE (X) != CONST_DOUBLE)
1165 #endif
1167 #ifndef MAX_FIXED_MODE_SIZE
1168 #define MAX_FIXED_MODE_SIZE GET_MODE_BITSIZE (DImode)
1169 #endif
1171 /* Nonzero if structures and unions should be returned in memory.
1173 This should only be defined if compatibility with another compiler or
1174 with an ABI is needed, because it results in slower code. */
1176 #ifndef DEFAULT_PCC_STRUCT_RETURN
1177 #define DEFAULT_PCC_STRUCT_RETURN 1
1178 #endif
1180 #ifdef GCC_INSN_FLAGS_H
1181 /* Dependent default target macro definitions
1183 This section of defaults.h defines target macros that depend on generated
1184 headers. This is a bit awkward: We want to put all default definitions
1185 for target macros in defaults.h, but some of the defaults depend on the
1186 HAVE_* flags defines of insn-flags.h. But insn-flags.h is not always
1187 included by files that do include defaults.h.
1189 Fortunately, the default macro definitions that depend on the HAVE_*
1190 macros are also the ones that will only be used inside GCC itself, i.e.
1191 not in the gen* programs or in target objects like libgcc.
1193 Obviously, it would be best to keep this section of defaults.h as small
1194 as possible, by converting the macros defined below to target hooks or
1195 functions.
1198 /* The default branch cost is 1. */
1199 #ifndef BRANCH_COST
1200 #define BRANCH_COST(speed_p, predictable_p) 1
1201 #endif
1203 /* If a memory-to-memory move would take MOVE_RATIO or more simple
1204 move-instruction sequences, we will do a movmem or libcall instead. */
1206 #ifndef MOVE_RATIO
1207 #if defined (HAVE_movmemqi) || defined (HAVE_movmemhi) || defined (HAVE_movmemsi) || defined (HAVE_movmemdi) || defined (HAVE_movmemti)
1208 #define MOVE_RATIO(speed) 2
1209 #else
1210 /* If we are optimizing for space (-Os), cut down the default move ratio. */
1211 #define MOVE_RATIO(speed) ((speed) ? 15 : 3)
1212 #endif
1213 #endif
1215 /* If a clear memory operation would take CLEAR_RATIO or more simple
1216 move-instruction sequences, we will do a setmem or libcall instead. */
1218 #ifndef CLEAR_RATIO
1219 #if defined (HAVE_setmemqi) || defined (HAVE_setmemhi) || defined (HAVE_setmemsi) || defined (HAVE_setmemdi) || defined (HAVE_setmemti)
1220 #define CLEAR_RATIO(speed) 2
1221 #else
1222 /* If we are optimizing for space, cut down the default clear ratio. */
1223 #define CLEAR_RATIO(speed) ((speed) ? 15 :3)
1224 #endif
1225 #endif
1227 /* If a memory set (to value other than zero) operation would take
1228 SET_RATIO or more simple move-instruction sequences, we will do a movmem
1229 or libcall instead. */
1230 #ifndef SET_RATIO
1231 #define SET_RATIO(speed) MOVE_RATIO (speed)
1232 #endif
1234 /* Supply a default definition for FUNCTION_ARG_PADDING:
1235 usually pad upward, but pad short args downward on
1236 big-endian machines. */
1238 #define DEFAULT_FUNCTION_ARG_PADDING(MODE, TYPE) \
1239 (! BYTES_BIG_ENDIAN \
1240 ? upward \
1241 : (((MODE) == BLKmode \
1242 ? ((TYPE) && TREE_CODE (TYPE_SIZE (TYPE)) == INTEGER_CST \
1243 && int_size_in_bytes (TYPE) < (PARM_BOUNDARY / BITS_PER_UNIT)) \
1244 : GET_MODE_BITSIZE (MODE) < PARM_BOUNDARY) \
1245 ? downward : upward))
1247 #ifndef FUNCTION_ARG_PADDING
1248 #define FUNCTION_ARG_PADDING(MODE, TYPE) \
1249 DEFAULT_FUNCTION_ARG_PADDING ((MODE), (TYPE))
1250 #endif
1252 /* Supply a default definition of STACK_SAVEAREA_MODE for emit_stack_save.
1253 Normally move_insn, so Pmode stack pointer. */
1255 #ifndef STACK_SAVEAREA_MODE
1256 #define STACK_SAVEAREA_MODE(LEVEL) Pmode
1257 #endif
1259 /* Supply a default definition of STACK_SIZE_MODE for
1260 allocate_dynamic_stack_space. Normally PLUS/MINUS, so word_mode. */
1262 #ifndef STACK_SIZE_MODE
1263 #define STACK_SIZE_MODE word_mode
1264 #endif
1266 /* Provide default values for the macros controlling stack checking. */
1268 /* The default is neither full builtin stack checking... */
1269 #ifndef STACK_CHECK_BUILTIN
1270 #define STACK_CHECK_BUILTIN 0
1271 #endif
1273 /* ...nor static builtin stack checking. */
1274 #ifndef STACK_CHECK_STATIC_BUILTIN
1275 #define STACK_CHECK_STATIC_BUILTIN 0
1276 #endif
1278 /* The default interval is one page (4096 bytes). */
1279 #ifndef STACK_CHECK_PROBE_INTERVAL_EXP
1280 #define STACK_CHECK_PROBE_INTERVAL_EXP 12
1281 #endif
1283 /* The default is not to move the stack pointer. */
1284 #ifndef STACK_CHECK_MOVING_SP
1285 #define STACK_CHECK_MOVING_SP 0
1286 #endif
1288 /* This is a kludge to try to capture the discrepancy between the old
1289 mechanism (generic stack checking) and the new mechanism (static
1290 builtin stack checking). STACK_CHECK_PROTECT needs to be bumped
1291 for the latter because part of the protection area is effectively
1292 included in STACK_CHECK_MAX_FRAME_SIZE for the former. */
1293 #ifdef STACK_CHECK_PROTECT
1294 #define STACK_OLD_CHECK_PROTECT STACK_CHECK_PROTECT
1295 #else
1296 #define STACK_OLD_CHECK_PROTECT \
1297 (targetm_common.except_unwind_info (&global_options) == UI_SJLJ \
1298 ? 75 * UNITS_PER_WORD \
1299 : 8 * 1024)
1300 #endif
1302 /* Minimum amount of stack required to recover from an anticipated stack
1303 overflow detection. The default value conveys an estimate of the amount
1304 of stack required to propagate an exception. */
1305 #ifndef STACK_CHECK_PROTECT
1306 #define STACK_CHECK_PROTECT \
1307 (targetm_common.except_unwind_info (&global_options) == UI_SJLJ \
1308 ? 75 * UNITS_PER_WORD \
1309 : 12 * 1024)
1310 #endif
1312 /* Make the maximum frame size be the largest we can and still only need
1313 one probe per function. */
1314 #ifndef STACK_CHECK_MAX_FRAME_SIZE
1315 #define STACK_CHECK_MAX_FRAME_SIZE \
1316 ((1 << STACK_CHECK_PROBE_INTERVAL_EXP) - UNITS_PER_WORD)
1317 #endif
1319 /* This is arbitrary, but should be large enough everywhere. */
1320 #ifndef STACK_CHECK_FIXED_FRAME_SIZE
1321 #define STACK_CHECK_FIXED_FRAME_SIZE (4 * UNITS_PER_WORD)
1322 #endif
1324 /* Provide a reasonable default for the maximum size of an object to
1325 allocate in the fixed frame. We may need to be able to make this
1326 controllable by the user at some point. */
1327 #ifndef STACK_CHECK_MAX_VAR_SIZE
1328 #define STACK_CHECK_MAX_VAR_SIZE (STACK_CHECK_MAX_FRAME_SIZE / 100)
1329 #endif
1331 /* By default, the C++ compiler will use function addresses in the
1332 vtable entries. Setting this nonzero tells the compiler to use
1333 function descriptors instead. The value of this macro says how
1334 many words wide the descriptor is (normally 2). It is assumed
1335 that the address of a function descriptor may be treated as a
1336 pointer to a function. */
1337 #ifndef TARGET_VTABLE_USES_DESCRIPTORS
1338 #define TARGET_VTABLE_USES_DESCRIPTORS 0
1339 #endif
1341 #ifndef SWITCHABLE_TARGET
1342 #define SWITCHABLE_TARGET 0
1343 #endif
1345 /* If the target supports integers that are wider than two
1346 HOST_WIDE_INTs on the host compiler, then the target should define
1347 TARGET_SUPPORTS_WIDE_INT and make the appropriate fixups.
1348 Otherwise the compiler really is not robust. */
1349 #ifndef TARGET_SUPPORTS_WIDE_INT
1350 #define TARGET_SUPPORTS_WIDE_INT 0
1351 #endif
1353 #endif /* GCC_INSN_FLAGS_H */
1355 #endif /* ! GCC_DEFAULTS_H */