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eff01bb6 1/* Definitions of various defaults for tm.h macros.
5624e564 2 Copyright (C) 1992-2015 Free Software Foundation, Inc.
b33c316c 3 Contributed by Ron Guilmette (rfg@monkeys.com)
c53a8ab6 4
1322177d 5This file is part of GCC.
c53a8ab6 6
1322177d
LB
7GCC is free software; you can redistribute it and/or modify it under
8the terms of the GNU General Public License as published by the Free
9dcd6f09 9Software Foundation; either version 3, or (at your option) any later
1322177d 10version.
c53a8ab6 11
1322177d
LB
12GCC is distributed in the hope that it will be useful, but WITHOUT ANY
13WARRANTY; without even the implied warranty of MERCHANTABILITY or
14FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
15for more details.
c53a8ab6 16
748086b7
JJ
17Under Section 7 of GPL version 3, you are granted additional
18permissions described in the GCC Runtime Library Exception, version
193.1, as published by the Free Software Foundation.
20
21You should have received a copy of the GNU General Public License and
22a copy of the GCC Runtime Library Exception along with this program;
23see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
9dcd6f09 24<http://www.gnu.org/licenses/>. */
c53a8ab6 25
d8ea8f28
ZW
26#ifndef GCC_DEFAULTS_H
27#define GCC_DEFAULTS_H
28
ded49a7f
RH
29/* How to start an assembler comment. */
30#ifndef ASM_COMMENT_START
31#define ASM_COMMENT_START ";#"
32#endif
33
4977bab6
ZW
34/* Store in OUTPUT a string (made with alloca) containing an
35 assembler-name for a local static variable or function named NAME.
7b73db04
CH
36 LABELNO is an integer which is different for each call. */
37
4977bab6
ZW
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 */
49
7b73db04 50#ifndef ASM_FORMAT_PRIVATE_NAME
4977bab6
ZW
51# define ASM_FORMAT_PRIVATE_NAME(OUTPUT, NAME, LABELNO) \
52 do { const char *const name_ = (NAME); \
28dab132
BI
53 char *const output_ = (OUTPUT) = \
54 (char *) alloca (strlen (name_) + 32); \
4977bab6 55 sprintf (output_, ASM_PN_FORMAT, name_, (unsigned long)(LABELNO)); \
7b73db04
CH
56 } while (0)
57#endif
58
e0a21ab9 59/* Choose a reasonable default for ASM_OUTPUT_ASCII. */
c53a8ab6
RS
60
61#ifndef ASM_OUTPUT_ASCII
62#define ASM_OUTPUT_ASCII(MYFILE, MYSTRING, MYLENGTH) \
63 do { \
64 FILE *_hide_asm_out_file = (MYFILE); \
47ee9bcb 65 const unsigned char *_hide_p = (const unsigned char *) (MYSTRING); \
c53a8ab6
RS
66 int _hide_thissize = (MYLENGTH); \
67 { \
68 FILE *asm_out_file = _hide_asm_out_file; \
47ee9bcb 69 const unsigned char *p = _hide_p; \
c53a8ab6
RS
70 int thissize = _hide_thissize; \
71 int i; \
72 fprintf (asm_out_file, "\t.ascii \""); \
73 \
74 for (i = 0; i < thissize; i++) \
75 { \
b3694847 76 int c = p[i]; \
c53a8ab6
RS
77 if (c == '\"' || c == '\\') \
78 putc ('\\', asm_out_file); \
c3284718 79 if (ISPRINT (c)) \
c53a8ab6
RS
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. \
8aeea6e6 86 The VAX assembler fails to stop reading the escape \
c53a8ab6
RS
87 after three digits, so this is the only way we \
88 can get it to parse the data properly. */ \
c3284718 89 if (i < thissize - 1 && ISDIGIT (p[i + 1])) \
c53a8ab6
RS
90 fprintf (asm_out_file, "\"\n\t.ascii \""); \
91 } \
92 } \
93 fprintf (asm_out_file, "\"\n"); \
94 } \
95 } \
96 while (0)
97#endif
d0d4af87 98
650f773a
JW
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) \
e8638df0 103 do { fprintf ((FILE), "%s", SET_ASM_OP); \
650f773a
JW
104 assemble_name (FILE, LABEL1); \
105 fprintf (FILE, ","); \
106 assemble_name (FILE, LABEL2); \
107 fprintf (FILE, "\n"); \
108 } while (0)
109#endif
110#endif
daefd78b 111
ba885ec5
NS
112#ifndef IFUNC_ASM_TYPE
113#define IFUNC_ASM_TYPE "gnu_indirect_function"
114#endif
115
f1c26cad
RO
116#ifndef TLS_COMMON_ASM_OP
117#define TLS_COMMON_ASM_OP ".tls_common"
118#endif
119
a13e882c
JJ
120#if defined (HAVE_AS_TLS) && !defined (ASM_OUTPUT_TLS_COMMON)
121#define ASM_OUTPUT_TLS_COMMON(FILE, DECL, NAME, SIZE) \
122 do \
123 { \
f1c26cad 124 fprintf ((FILE), "\t%s\t", TLS_COMMON_ASM_OP); \
a13e882c
JJ
125 assemble_name ((FILE), (NAME)); \
126 fprintf ((FILE), ","HOST_WIDE_INT_PRINT_UNSIGNED",%u\n", \
127 (SIZE), DECL_ALIGN (DECL) / BITS_PER_UNIT); \
128 } \
129 while (0)
130#endif
131
083b6717
JDA
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
137
4ad5e05d 138/* This is how to output the definition of a user-level label named
135a687e 139 NAME, such as the label on variable NAME. */
4ad5e05d
KG
140
141#ifndef ASM_OUTPUT_LABEL
142#define ASM_OUTPUT_LABEL(FILE,NAME) \
5e3929ed
DA
143 do { \
144 assemble_name ((FILE), (NAME)); \
145 fputs (":\n", (FILE)); \
146 } while (0)
4ad5e05d
KG
147#endif
148
135a687e
KT
149/* This is how to output the definition of a user-level label named
150 NAME, such as the label on a function. */
151
152#ifndef ASM_OUTPUT_FUNCTION_LABEL
153#define ASM_OUTPUT_FUNCTION_LABEL(FILE, NAME, DECL) \
154 ASM_OUTPUT_LABEL ((FILE), (NAME))
155#endif
156
57829bc4
MM
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
165
81d77cda
RK
166/* This is how to output a reference to a user-level label named NAME. */
167
168#ifndef ASM_OUTPUT_LABELREF
5e3929ed
DA
169#define ASM_OUTPUT_LABELREF(FILE,NAME) \
170 do { \
171 fputs (user_label_prefix, (FILE)); \
172 fputs ((NAME), (FILE)); \
173 } while (0);
81d77cda
RK
174#endif
175
8215347e
JW
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. */
179
180#ifndef ASM_OUTPUT_DEBUG_LABEL
181#define ASM_OUTPUT_DEBUG_LABEL(FILE, PREFIX, NUM) \
4977bab6 182 (*targetm.asm_out.internal_label) (FILE, PREFIX, NUM)
8215347e
JW
183#endif
184
3aa8ab7b 185/* This is how we tell the assembler that a symbol is weak. */
20c93f7c
RO
186#ifndef ASM_OUTPUT_WEAK_ALIAS
187#if defined (ASM_WEAKEN_LABEL) && defined (ASM_OUTPUT_DEF)
3aa8ab7b
L
188#define ASM_OUTPUT_WEAK_ALIAS(STREAM, NAME, VALUE) \
189 do \
190 { \
191 ASM_WEAKEN_LABEL (STREAM, NAME); \
192 if (VALUE) \
193 ASM_OUTPUT_DEF (STREAM, NAME, VALUE); \
194 } \
195 while (0)
a0203ca7
AO
196#endif
197#endif
198
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
ff2d10c1 207#define ASM_OUTPUT_WEAKREF(FILE, DECL, NAME, VALUE) \
a0203ca7
AO
208 do \
209 { \
210 fprintf ((FILE), "\t.weakref\t"); \
211 assemble_name ((FILE), (NAME)); \
212 fprintf ((FILE), ","); \
213 assemble_name ((FILE), (VALUE)); \
214 fprintf ((FILE), "\n"); \
215 } \
216 while (0)
3aa8ab7b 217#endif
20c93f7c 218#endif
3aa8ab7b 219
2be2ac70
ZW
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 \
225 { \
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); \
231 } \
232 while (0)
233#endif
234#endif
235
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 \
241 { \
242 HOST_WIDE_INT size_ = (SIZE); \
243 fputs (SIZE_ASM_OP, STREAM); \
244 assemble_name (STREAM, NAME); \
90ff44cf 245 fprintf (STREAM, ", " HOST_WIDE_INT_PRINT_DEC "\n", size_); \
2be2ac70
ZW
246 } \
247 while (0)
248
99086d59 249#define ASM_OUTPUT_MEASURED_SIZE(STREAM, NAME) \
2be2ac70
ZW
250 do \
251 { \
252 fputs (SIZE_ASM_OP, STREAM); \
99086d59
ZW
253 assemble_name (STREAM, NAME); \
254 fputs (", .-", STREAM); \
255 assemble_name (STREAM, NAME); \
2be2ac70
ZW
256 putc ('\n', STREAM); \
257 } \
258 while (0)
259
260#endif
261#endif
262
74b90fe2
JDA
263/* This determines whether or not we support weak symbols. SUPPORTS_WEAK
264 must be a preprocessor constant. */
daefd78b 265#ifndef SUPPORTS_WEAK
79c4e63f 266#if defined (ASM_WEAKEN_LABEL) || defined (ASM_WEAKEN_DECL)
daefd78b
JM
267#define SUPPORTS_WEAK 1
268#else
269#define SUPPORTS_WEAK 0
270#endif
271#endif
a6ab3aad 272
74b90fe2
JDA
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
278
ed5ef2e4
CC
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
288
1ca894a0
MM
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
297
0524c91d
MA
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;
8c27b7d4 302 see the documentation. */
0524c91d
MA
303#ifndef TARGET_WEAK_NOT_IN_ARCHIVE_TOC
304#define TARGET_WEAK_NOT_IN_ARCHIVE_TOC 0
4746cf84
MA
305#endif
306
ea4b7848 307/* This determines whether or not we need linkonce unwind information. */
4746cf84
MA
308#ifndef TARGET_USES_WEAK_UNWIND_INFO
309#define TARGET_USES_WEAK_UNWIND_INFO 0
310#endif
311
d48fd218
ZW
312/* By default, there is no prefix on user-defined symbols. */
313#ifndef USER_LABEL_PREFIX
314#define USER_LABEL_PREFIX ""
315#endif
316
8f08ea1e 317/* If the target supports weak symbols, define TARGET_ATTRIBUTE_WEAK to
f676971a 318 provide a weak attribute. Else define it to nothing.
8f08ea1e 319
d02af173 320 This would normally belong in ansidecl.h, but SUPPORTS_WEAK is
8f08ea1e
L
321 not available at that time.
322
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
332
15072eb1
ZW
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
4746cf84 338
ea4f1fce
JO
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 */
344
a6ab3aad
JM
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. */
f0a0390e 347#if !defined (DWARF2_UNWIND_INFO) && defined (INCOMING_RETURN_ADDR_RTX)
0021b564 348#define DWARF2_UNWIND_INFO 1
a6ab3aad 349#endif
b366352b 350
2cc07db4
RH
351/* If we have named sections, and we're using crtstuff to run ctors,
352 use them for registering eh frame information. */
bc2a8f08 353#if defined (TARGET_ASM_NAMED_SECTION) && DWARF2_UNWIND_INFO \
c3284718 354 && !defined (EH_FRAME_IN_DATA_SECTION)
7c262518
RH
355#ifndef EH_FRAME_SECTION_NAME
356#define EH_FRAME_SECTION_NAME ".eh_frame"
357#endif
31cf0144
JM
358#endif
359
1a35e62d
MM
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
379
9a522505
TS
380/* Provide defaults for stuff that may not be defined when using
381 sjlj exceptions. */
382#ifndef EH_RETURN_DATA_REGNO
383#define EH_RETURN_DATA_REGNO(N) INVALID_REGNUM
384#endif
385
a8a6b3df
TS
386/* Offset between the eh handler address and entry in eh tables. */
387#ifndef RETURN_ADDR_OFFSET
388#define RETURN_ADDR_OFFSET 0
389#endif
390
cbc7d031
TS
391#ifndef MASK_RETURN_ADDR
392#define MASK_RETURN_ADDR NULL_RTX
393#endif
394
6351543d
AG
395/* If we have named section and we support weak symbols, then use the
396 .jcr section for recording java classes which need to be registered
397 at program start-up time. */
398#if defined (TARGET_ASM_NAMED_SECTION) && SUPPORTS_WEAK
399#ifndef JCR_SECTION_NAME
400#define JCR_SECTION_NAME ".jcr"
401#endif
402#endif
403
adb35797 404/* This decision to use a .jcr section can be overridden by defining
e50e6b88
DS
405 USE_JCR_SECTION to 0 in target file. This is necessary if target
406 can define JCR_SECTION_NAME but does not have crtstuff or
407 linker support for .jcr section. */
408#ifndef TARGET_USE_JCR_SECTION
409#ifdef JCR_SECTION_NAME
410#define TARGET_USE_JCR_SECTION 1
411#else
412#define TARGET_USE_JCR_SECTION 0
413#endif
414#endif
415
c478efd1
GDR
416/* Number of hardware registers that go into the DWARF-2 unwind info.
417 If not defined, equals FIRST_PSEUDO_REGISTER */
418
419#ifndef DWARF_FRAME_REGISTERS
420#define DWARF_FRAME_REGISTERS FIRST_PSEUDO_REGISTER
421#endif
d8ea8f28 422
db42e39d
RH
423/* Offsets recorded in opcodes are a multiple of this alignment factor. */
424#ifndef DWARF_CIE_DATA_ALIGNMENT
425#ifdef STACK_GROWS_DOWNWARD
426#define DWARF_CIE_DATA_ALIGNMENT (-((int) UNITS_PER_WORD))
427#else
428#define DWARF_CIE_DATA_ALIGNMENT ((int) UNITS_PER_WORD)
429#endif
430#endif
431
432/* The DWARF 2 CFA column which tracks the return address. Normally this
433 is the column for PC, or the first column after all of the hard
434 registers. */
435#ifndef DWARF_FRAME_RETURN_COLUMN
436#ifdef PC_REGNUM
437#define DWARF_FRAME_RETURN_COLUMN DWARF_FRAME_REGNUM (PC_REGNUM)
438#else
439#define DWARF_FRAME_RETURN_COLUMN DWARF_FRAME_REGISTERS
440#endif
441#endif
442
4617e3b5
KG
443/* How to renumber registers for dbx and gdb. If not defined, assume
444 no renumbering is necessary. */
445
446#ifndef DBX_REGISTER_NUMBER
447#define DBX_REGISTER_NUMBER(REGNO) (REGNO)
448#endif
449
db42e39d
RH
450/* The mapping from gcc register number to DWARF 2 CFA column number.
451 By default, we just provide columns for all registers. */
452#ifndef DWARF_FRAME_REGNUM
453#define DWARF_FRAME_REGNUM(REG) DBX_REGISTER_NUMBER (REG)
454#endif
455
a66272f6
OH
456/* The mapping from dwarf CFA reg number to internal dwarf reg numbers. */
457#ifndef DWARF_REG_TO_UNWIND_COLUMN
458#define DWARF_REG_TO_UNWIND_COLUMN(REGNO) (REGNO)
459#endif
460
db42e39d
RH
461/* Map register numbers held in the call frame info that gcc has
462 collected using DWARF_FRAME_REGNUM to those that should be output in
463 .debug_frame and .eh_frame. */
464#ifndef DWARF2_FRAME_REG_OUT
465#define DWARF2_FRAME_REG_OUT(REGNO, FOR_EH) (REGNO)
466#endif
467
948d330e
RH
468/* The size of addresses as they appear in the Dwarf 2 data.
469 Some architectures use word addresses to refer to code locations,
470 but Dwarf 2 info always uses byte addresses. On such machines,
471 Dwarf 2 addresses need to be larger than the architecture's
472 pointers. */
473#ifndef DWARF2_ADDR_SIZE
50b6ee8b 474#define DWARF2_ADDR_SIZE ((POINTER_SIZE + BITS_PER_UNIT - 1) / BITS_PER_UNIT)
948d330e
RH
475#endif
476
477/* The size in bytes of a DWARF field indicating an offset or length
478 relative to a debug info section, specified to be 4 bytes in the
479 DWARF-2 specification. The SGI/MIPS ABI defines it to be the same
480 as PTR_SIZE. */
481#ifndef DWARF_OFFSET_SIZE
482#define DWARF_OFFSET_SIZE 4
483#endif
484
485/* The size in bytes of a DWARF 4 type signature. */
486#ifndef DWARF_TYPE_SIGNATURE_SIZE
487#define DWARF_TYPE_SIGNATURE_SIZE 8
488#endif
489
d8ea8f28
ZW
490/* Default sizes for base C types. If the sizes are different for
491 your target, you should override these values by defining the
492 appropriate symbols in your tm.h file. */
493
807e902e
KZ
494#if BITS_PER_UNIT == 8
495#define LOG2_BITS_PER_UNIT 3
496#elif BITS_PER_UNIT == 16
497#define LOG2_BITS_PER_UNIT 4
498#else
499#error Unknown BITS_PER_UNIT
500#endif
501
e81dd381
KG
502#ifndef BITS_PER_WORD
503#define BITS_PER_WORD (BITS_PER_UNIT * UNITS_PER_WORD)
504#endif
505
d8ea8f28
ZW
506#ifndef CHAR_TYPE_SIZE
507#define CHAR_TYPE_SIZE BITS_PER_UNIT
508#endif
509
609688f3
JM
510#ifndef BOOL_TYPE_SIZE
511/* `bool' has size and alignment `1', on almost all platforms. */
512#define BOOL_TYPE_SIZE CHAR_TYPE_SIZE
513#endif
514
d8ea8f28
ZW
515#ifndef SHORT_TYPE_SIZE
516#define SHORT_TYPE_SIZE (BITS_PER_UNIT * MIN ((UNITS_PER_WORD + 1) / 2, 2))
517#endif
518
519#ifndef INT_TYPE_SIZE
520#define INT_TYPE_SIZE BITS_PER_WORD
521#endif
522
523#ifndef LONG_TYPE_SIZE
524#define LONG_TYPE_SIZE BITS_PER_WORD
525#endif
526
527#ifndef LONG_LONG_TYPE_SIZE
528#define LONG_LONG_TYPE_SIZE (BITS_PER_WORD * 2)
529#endif
530
531#ifndef WCHAR_TYPE_SIZE
532#define WCHAR_TYPE_SIZE INT_TYPE_SIZE
533#endif
534
d8ea8f28
ZW
535#ifndef FLOAT_TYPE_SIZE
536#define FLOAT_TYPE_SIZE BITS_PER_WORD
537#endif
538
539#ifndef DOUBLE_TYPE_SIZE
540#define DOUBLE_TYPE_SIZE (BITS_PER_WORD * 2)
541#endif
542
543#ifndef LONG_DOUBLE_TYPE_SIZE
544#define LONG_DOUBLE_TYPE_SIZE (BITS_PER_WORD * 2)
545#endif
546
9a8ce21f
JG
547#ifndef DECIMAL32_TYPE_SIZE
548#define DECIMAL32_TYPE_SIZE 32
b8698a0f 549#endif
9a8ce21f 550
b8698a0f 551#ifndef DECIMAL64_TYPE_SIZE
9a8ce21f 552#define DECIMAL64_TYPE_SIZE 64
b8698a0f 553#endif
9a8ce21f
JG
554
555#ifndef DECIMAL128_TYPE_SIZE
556#define DECIMAL128_TYPE_SIZE 128
557#endif
558
325217ed
CF
559#ifndef SHORT_FRACT_TYPE_SIZE
560#define SHORT_FRACT_TYPE_SIZE BITS_PER_UNIT
561#endif
562
563#ifndef FRACT_TYPE_SIZE
564#define FRACT_TYPE_SIZE (BITS_PER_UNIT * 2)
565#endif
566
567#ifndef LONG_FRACT_TYPE_SIZE
568#define LONG_FRACT_TYPE_SIZE (BITS_PER_UNIT * 4)
569#endif
570
571#ifndef LONG_LONG_FRACT_TYPE_SIZE
572#define LONG_LONG_FRACT_TYPE_SIZE (BITS_PER_UNIT * 8)
573#endif
574
575#ifndef SHORT_ACCUM_TYPE_SIZE
576#define SHORT_ACCUM_TYPE_SIZE (SHORT_FRACT_TYPE_SIZE * 2)
577#endif
578
579#ifndef ACCUM_TYPE_SIZE
580#define ACCUM_TYPE_SIZE (FRACT_TYPE_SIZE * 2)
581#endif
582
583#ifndef LONG_ACCUM_TYPE_SIZE
584#define LONG_ACCUM_TYPE_SIZE (LONG_FRACT_TYPE_SIZE * 2)
585#endif
586
587#ifndef LONG_LONG_ACCUM_TYPE_SIZE
588#define LONG_LONG_ACCUM_TYPE_SIZE (LONG_LONG_FRACT_TYPE_SIZE * 2)
589#endif
590
1ffc7157
FXC
591/* We let tm.h override the types used here, to handle trivial differences
592 such as the choice of unsigned int or long unsigned int for size_t.
593 When machines start needing nontrivial differences in the size type,
594 it would be best to do something here to figure out automatically
595 from other information what type to use. */
596
597#ifndef SIZE_TYPE
598#define SIZE_TYPE "long unsigned int"
599#endif
600
18dae016
TG
601#ifndef SIZETYPE
602#define SIZETYPE SIZE_TYPE
603#endif
604
1ffc7157
FXC
605#ifndef PID_TYPE
606#define PID_TYPE "int"
607#endif
608
609/* If GCC knows the exact uint_least16_t and uint_least32_t types from
610 <stdint.h>, use them for char16_t and char32_t. Otherwise, use
611 these guesses; getting the wrong type of a given width will not
612 affect C++ name mangling because in C++ these are distinct types
613 not typedefs. */
614
615#ifdef UINT_LEAST16_TYPE
616#define CHAR16_TYPE UINT_LEAST16_TYPE
617#else
618#define CHAR16_TYPE "short unsigned int"
619#endif
620
621#ifdef UINT_LEAST32_TYPE
622#define CHAR32_TYPE UINT_LEAST32_TYPE
623#else
624#define CHAR32_TYPE "unsigned int"
625#endif
626
627#ifndef WCHAR_TYPE
628#define WCHAR_TYPE "int"
629#endif
630
631/* WCHAR_TYPE gets overridden by -fshort-wchar. */
632#define MODIFIED_WCHAR_TYPE \
633 (flag_short_wchar ? "short unsigned int" : WCHAR_TYPE)
634
635#ifndef PTRDIFF_TYPE
636#define PTRDIFF_TYPE "long int"
637#endif
638
639#ifndef WINT_TYPE
640#define WINT_TYPE "unsigned int"
641#endif
642
643#ifndef INTMAX_TYPE
644#define INTMAX_TYPE ((INT_TYPE_SIZE == LONG_LONG_TYPE_SIZE) \
645 ? "int" \
646 : ((LONG_TYPE_SIZE == LONG_LONG_TYPE_SIZE) \
647 ? "long int" \
648 : "long long int"))
649#endif
650
651#ifndef UINTMAX_TYPE
652#define UINTMAX_TYPE ((INT_TYPE_SIZE == LONG_LONG_TYPE_SIZE) \
653 ? "unsigned int" \
654 : ((LONG_TYPE_SIZE == LONG_LONG_TYPE_SIZE) \
655 ? "long unsigned int" \
656 : "long long unsigned int"))
657#endif
658
659
660/* There are no default definitions of these <stdint.h> types. */
661
662#ifndef SIG_ATOMIC_TYPE
663#define SIG_ATOMIC_TYPE ((const char *) NULL)
664#endif
665
666#ifndef INT8_TYPE
667#define INT8_TYPE ((const char *) NULL)
668#endif
669
670#ifndef INT16_TYPE
671#define INT16_TYPE ((const char *) NULL)
672#endif
673
674#ifndef INT32_TYPE
675#define INT32_TYPE ((const char *) NULL)
676#endif
677
678#ifndef INT64_TYPE
679#define INT64_TYPE ((const char *) NULL)
680#endif
681
682#ifndef UINT8_TYPE
683#define UINT8_TYPE ((const char *) NULL)
684#endif
685
686#ifndef UINT16_TYPE
687#define UINT16_TYPE ((const char *) NULL)
688#endif
689
690#ifndef UINT32_TYPE
691#define UINT32_TYPE ((const char *) NULL)
692#endif
693
694#ifndef UINT64_TYPE
695#define UINT64_TYPE ((const char *) NULL)
696#endif
697
698#ifndef INT_LEAST8_TYPE
699#define INT_LEAST8_TYPE ((const char *) NULL)
700#endif
701
702#ifndef INT_LEAST16_TYPE
703#define INT_LEAST16_TYPE ((const char *) NULL)
704#endif
705
706#ifndef INT_LEAST32_TYPE
707#define INT_LEAST32_TYPE ((const char *) NULL)
708#endif
709
710#ifndef INT_LEAST64_TYPE
711#define INT_LEAST64_TYPE ((const char *) NULL)
712#endif
713
714#ifndef UINT_LEAST8_TYPE
715#define UINT_LEAST8_TYPE ((const char *) NULL)
716#endif
717
718#ifndef UINT_LEAST16_TYPE
719#define UINT_LEAST16_TYPE ((const char *) NULL)
720#endif
721
722#ifndef UINT_LEAST32_TYPE
723#define UINT_LEAST32_TYPE ((const char *) NULL)
724#endif
725
726#ifndef UINT_LEAST64_TYPE
727#define UINT_LEAST64_TYPE ((const char *) NULL)
728#endif
729
730#ifndef INT_FAST8_TYPE
731#define INT_FAST8_TYPE ((const char *) NULL)
732#endif
733
734#ifndef INT_FAST16_TYPE
735#define INT_FAST16_TYPE ((const char *) NULL)
736#endif
737
738#ifndef INT_FAST32_TYPE
739#define INT_FAST32_TYPE ((const char *) NULL)
740#endif
741
742#ifndef INT_FAST64_TYPE
743#define INT_FAST64_TYPE ((const char *) NULL)
744#endif
745
746#ifndef UINT_FAST8_TYPE
747#define UINT_FAST8_TYPE ((const char *) NULL)
748#endif
749
750#ifndef UINT_FAST16_TYPE
751#define UINT_FAST16_TYPE ((const char *) NULL)
752#endif
753
754#ifndef UINT_FAST32_TYPE
755#define UINT_FAST32_TYPE ((const char *) NULL)
756#endif
757
758#ifndef UINT_FAST64_TYPE
759#define UINT_FAST64_TYPE ((const char *) NULL)
760#endif
761
762#ifndef INTPTR_TYPE
763#define INTPTR_TYPE ((const char *) NULL)
764#endif
765
766#ifndef UINTPTR_TYPE
767#define UINTPTR_TYPE ((const char *) NULL)
768#endif
769
2465bf76
KG
770/* Width in bits of a pointer. Mind the value of the macro `Pmode'. */
771#ifndef POINTER_SIZE
772#define POINTER_SIZE BITS_PER_WORD
773#endif
50b6ee8b
DD
774#ifndef POINTER_SIZE_UNITS
775#define POINTER_SIZE_UNITS ((POINTER_SIZE + BITS_PER_UNIT - 1) / BITS_PER_UNIT)
776#endif
777
2465bf76 778
848e0190
JH
779#ifndef PIC_OFFSET_TABLE_REGNUM
780#define PIC_OFFSET_TABLE_REGNUM INVALID_REGNUM
781#endif
782
f8fe0a4a
JM
783#ifndef PIC_OFFSET_TABLE_REG_CALL_CLOBBERED
784#define PIC_OFFSET_TABLE_REG_CALL_CLOBBERED 0
785#endif
786
b2ca3702
MM
787#ifndef TARGET_DLLIMPORT_DECL_ATTRIBUTES
788#define TARGET_DLLIMPORT_DECL_ATTRIBUTES 0
789#endif
790
63c5b495 791#ifndef TARGET_DECLSPEC
b2ca3702 792#if TARGET_DLLIMPORT_DECL_ATTRIBUTES
63c5b495
MM
793/* If the target supports the "dllimport" attribute, users are
794 probably used to the "__declspec" syntax. */
795#define TARGET_DECLSPEC 1
796#else
797#define TARGET_DECLSPEC 0
798#endif
799#endif
800
a9374841
MM
801/* By default, the preprocessor should be invoked the same way in C++
802 as in C. */
803#ifndef CPLUSPLUS_CPP_SPEC
804#ifdef CPP_SPEC
805#define CPLUSPLUS_CPP_SPEC CPP_SPEC
806#endif
807#endif
808
bf501a65
RH
809#ifndef ACCUMULATE_OUTGOING_ARGS
810#define ACCUMULATE_OUTGOING_ARGS 0
811#endif
812
fea3ca91
IS
813/* By default, use the GNU runtime for Objective C. */
814#ifndef NEXT_OBJC_RUNTIME
815#define NEXT_OBJC_RUNTIME 0
816#endif
817
bf501a65
RH
818/* Supply a default definition for PUSH_ARGS. */
819#ifndef PUSH_ARGS
820#ifdef PUSH_ROUNDING
821#define PUSH_ARGS !ACCUMULATE_OUTGOING_ARGS
822#else
823#define PUSH_ARGS 0
824#endif
825#endif
826
9d6bef95
JM
827/* Decide whether a function's arguments should be processed
828 from first to last or from last to first.
829
830 They should if the stack and args grow in opposite directions, but
831 only if we have push insns. */
832
833#ifdef PUSH_ROUNDING
834
835#ifndef PUSH_ARGS_REVERSED
836#if defined (STACK_GROWS_DOWNWARD) != defined (ARGS_GROW_DOWNWARD)
837#define PUSH_ARGS_REVERSED PUSH_ARGS
838#endif
839#endif
840
841#endif
842
843#ifndef PUSH_ARGS_REVERSED
844#define PUSH_ARGS_REVERSED 0
845#endif
846
95331614
OH
847/* Default value for the alignment (in bits) a C conformant malloc has to
848 provide. This default is intended to be safe and always correct. */
849#ifndef MALLOC_ABI_ALIGNMENT
850#define MALLOC_ABI_ALIGNMENT BITS_PER_WORD
851#endif
852
31cdd499
ZW
853/* If PREFERRED_STACK_BOUNDARY is not defined, set it to STACK_BOUNDARY.
854 STACK_BOUNDARY is required. */
855#ifndef PREFERRED_STACK_BOUNDARY
856#define PREFERRED_STACK_BOUNDARY STACK_BOUNDARY
857#endif
858
2e3f842f
L
859/* Set INCOMING_STACK_BOUNDARY to PREFERRED_STACK_BOUNDARY if it is not
860 defined. */
861#ifndef INCOMING_STACK_BOUNDARY
862#define INCOMING_STACK_BOUNDARY PREFERRED_STACK_BOUNDARY
863#endif
864
467cecf3
JB
865#ifndef TARGET_DEFAULT_PACK_STRUCT
866#define TARGET_DEFAULT_PACK_STRUCT 0
867#endif
868
a6f5e048
RH
869/* By default, the vtable entries are void pointers, the so the alignment
870 is the same as pointer alignment. The value of this macro specifies
871 the alignment of the vtable entry in bits. It should be defined only
4b7e68e7 872 when special alignment is necessary. */
a6f5e048
RH
873#ifndef TARGET_VTABLE_ENTRY_ALIGN
874#define TARGET_VTABLE_ENTRY_ALIGN POINTER_SIZE
875#endif
876
877/* There are a few non-descriptor entries in the vtable at offsets below
878 zero. If these entries must be padded (say, to preserve the alignment
879 specified by TARGET_VTABLE_ENTRY_ALIGN), set this to the number of
880 words in each data entry. */
881#ifndef TARGET_VTABLE_DATA_ENTRY_DISTANCE
882#define TARGET_VTABLE_DATA_ENTRY_DISTANCE 1
883#endif
884
4a77e08c
DS
885/* Decide whether it is safe to use a local alias for a virtual function
886 when constructing thunks. */
887#ifndef TARGET_USE_LOCAL_THUNK_ALIAS_P
888#ifdef ASM_OUTPUT_DEF
889#define TARGET_USE_LOCAL_THUNK_ALIAS_P(DECL) 1
890#else
891#define TARGET_USE_LOCAL_THUNK_ALIAS_P(DECL) 0
892#endif
893#endif
894
2a1ee410
RH
895/* Select a format to encode pointers in exception handling data. We
896 prefer those that result in fewer dynamic relocations. Assume no
897 special support here and encode direct references. */
898#ifndef ASM_PREFERRED_EH_DATA_FORMAT
899#define ASM_PREFERRED_EH_DATA_FORMAT(CODE,GLOBAL) DW_EH_PE_absptr
900#endif
901
f3c55c97
AO
902/* By default, the C++ compiler will use the lowest bit of the pointer
903 to function to indicate a pointer-to-member-function points to a
904 virtual member function. However, if FUNCTION_BOUNDARY indicates
905 function addresses aren't always even, the lowest bit of the delta
906 field will be used. */
907#ifndef TARGET_PTRMEMFUNC_VBIT_LOCATION
908#define TARGET_PTRMEMFUNC_VBIT_LOCATION \
909 (FUNCTION_BOUNDARY >= 2 * BITS_PER_UNIT \
910 ? ptrmemfunc_vbit_in_pfn : ptrmemfunc_vbit_in_delta)
911#endif
912
5f0e9ea2
GK
913#ifndef DEFAULT_GDB_EXTENSIONS
914#define DEFAULT_GDB_EXTENSIONS 1
915#endif
916
917/* If more than one debugging type is supported, you must define
f8ca7e49 918 PREFERRED_DEBUGGING_TYPE to choose the default. */
5f0e9ea2 919
f8ca7e49
ZW
920#if 1 < (defined (DBX_DEBUGGING_INFO) + defined (SDB_DEBUGGING_INFO) \
921 + defined (DWARF2_DEBUGGING_INFO) + defined (XCOFF_DEBUGGING_INFO) \
922 + defined (VMS_DEBUGGING_INFO))
5f0e9ea2 923#ifndef PREFERRED_DEBUGGING_TYPE
f8ca7e49 924#error You must define PREFERRED_DEBUGGING_TYPE
5f0e9ea2 925#endif /* no PREFERRED_DEBUGGING_TYPE */
f8ca7e49
ZW
926
927/* If only one debugging format is supported, define PREFERRED_DEBUGGING_TYPE
928 here so other code needn't care. */
929#elif defined DBX_DEBUGGING_INFO
5f0e9ea2 930#define PREFERRED_DEBUGGING_TYPE DBX_DEBUG
f8ca7e49
ZW
931
932#elif defined SDB_DEBUGGING_INFO
5f0e9ea2 933#define PREFERRED_DEBUGGING_TYPE SDB_DEBUG
f8ca7e49
ZW
934
935#elif defined DWARF2_DEBUGGING_INFO
5f0e9ea2 936#define PREFERRED_DEBUGGING_TYPE DWARF2_DEBUG
f8ca7e49
ZW
937
938#elif defined VMS_DEBUGGING_INFO
7a0c8d71 939#define PREFERRED_DEBUGGING_TYPE VMS_AND_DWARF2_DEBUG
f8ca7e49
ZW
940
941#elif defined XCOFF_DEBUGGING_INFO
5f0e9ea2 942#define PREFERRED_DEBUGGING_TYPE XCOFF_DEBUG
5f0e9ea2 943
f8ca7e49
ZW
944#else
945/* No debugging format is supported by this target. */
5f0e9ea2
GK
946#define PREFERRED_DEBUGGING_TYPE NO_DEBUG
947#endif
948
c15c90bb
ZW
949#ifndef FLOAT_LIB_COMPARE_RETURNS_BOOL
950#define FLOAT_LIB_COMPARE_RETURNS_BOOL(MODE, COMPARISON) false
951#endif
952
6cb38cd4 953/* True if the targets integer-comparison functions return { 0, 1, 2
b3f8d95d
MM
954 } to indicate { <, ==, > }. False if { -1, 0, 1 } is used
955 instead. The libgcc routines are biased. */
956#ifndef TARGET_LIB_INT_CMP_BIASED
957#define TARGET_LIB_INT_CMP_BIASED (true)
958#endif
959
2d295af5
ZW
960/* If FLOAT_WORDS_BIG_ENDIAN is not defined in the header files,
961 then the word-endianness is the same as for integers. */
efdc7e19
RH
962#ifndef FLOAT_WORDS_BIG_ENDIAN
963#define FLOAT_WORDS_BIG_ENDIAN WORDS_BIG_ENDIAN
964#endif
965
c0a6a1ef
BS
966#ifndef REG_WORDS_BIG_ENDIAN
967#define REG_WORDS_BIG_ENDIAN WORDS_BIG_ENDIAN
968#endif
969
8ce94e44
JM
970#ifdef TARGET_FLT_EVAL_METHOD
971#define TARGET_FLT_EVAL_METHOD_NON_DEFAULT 1
972#else
d57a4b98 973#define TARGET_FLT_EVAL_METHOD 0
8ce94e44 974#define TARGET_FLT_EVAL_METHOD_NON_DEFAULT 0
d57a4b98
RH
975#endif
976
9a8ce21f
JG
977#ifndef TARGET_DEC_EVAL_METHOD
978#define TARGET_DEC_EVAL_METHOD 2
979#endif
980
750054a2
CT
981#ifndef HAS_LONG_COND_BRANCH
982#define HAS_LONG_COND_BRANCH 0
983#endif
984
985#ifndef HAS_LONG_UNCOND_BRANCH
986#define HAS_LONG_UNCOND_BRANCH 0
987#endif
988
4bafaa6f 989/* Determine whether __cxa_atexit, rather than atexit, is used to
4b7e68e7 990 register C++ destructors for local statics and global objects. */
4bafaa6f
L
991#ifndef DEFAULT_USE_CXA_ATEXIT
992#define DEFAULT_USE_CXA_ATEXIT 0
993#endif
994
f38840db
ZW
995#if GCC_VERSION >= 3000 && defined IN_GCC
996/* These old constraint macros shouldn't appear anywhere in a
997 configuration using MD constraint definitions. */
97488870
R
998#endif
999
4bd5abca
SM
1000/* Determin whether the target runtime library is Bionic */
1001#ifndef TARGET_HAS_BIONIC
1002#define TARGET_HAS_BIONIC 0
1003#endif
1004
7dba8395 1005/* Indicate that CLZ and CTZ are undefined at zero. */
f676971a 1006#ifndef CLZ_DEFINED_VALUE_AT_ZERO
7dba8395
RH
1007#define CLZ_DEFINED_VALUE_AT_ZERO(MODE, VALUE) 0
1008#endif
f676971a 1009#ifndef CTZ_DEFINED_VALUE_AT_ZERO
7dba8395
RH
1010#define CTZ_DEFINED_VALUE_AT_ZERO(MODE, VALUE) 0
1011#endif
1012
06f31100
RS
1013/* Provide a default value for STORE_FLAG_VALUE. */
1014#ifndef STORE_FLAG_VALUE
1015#define STORE_FLAG_VALUE 1
1016#endif
1017
436bcda1
GK
1018/* This macro is used to determine what the largest unit size that
1019 move_by_pieces can use is. */
1020
1021/* MOVE_MAX_PIECES is the number of bytes at a time which we can
1022 move efficiently, as opposed to MOVE_MAX which is the maximum
1023 number of bytes we can move with a single instruction. */
1024
1025#ifndef MOVE_MAX_PIECES
1026#define MOVE_MAX_PIECES MOVE_MAX
1027#endif
1028
7cbed008
JG
1029/* STORE_MAX_PIECES is the number of bytes at a time that we can
1030 store efficiently. Due to internal GCC limitations, this is
1031 MOVE_MAX_PIECES limited by the number of bytes GCC can represent
1032 for an immediate constant. */
1033
1034#ifndef STORE_MAX_PIECES
1035#define STORE_MAX_PIECES MIN (MOVE_MAX_PIECES, 2 * sizeof (HOST_WIDE_INT))
1036#endif
1037
bcbaaba1
RS
1038#ifndef MAX_MOVE_MAX
1039#define MAX_MOVE_MAX MOVE_MAX
1040#endif
1041
1042#ifndef MIN_UNITS_PER_WORD
1043#define MIN_UNITS_PER_WORD UNITS_PER_WORD
1044#endif
1045
d1465187
RS
1046#ifndef MAX_BITS_PER_WORD
1047#define MAX_BITS_PER_WORD BITS_PER_WORD
1048#endif
1049
a594a19c
GK
1050#ifndef STACK_POINTER_OFFSET
1051#define STACK_POINTER_OFFSET 0
1052#endif
1053
cca8fb0e
KH
1054#ifndef LOCAL_REGNO
1055#define LOCAL_REGNO(REGNO) 0
1056#endif
1057
ed15c598
KC
1058#ifndef HONOR_REG_ALLOC_ORDER
1059#define HONOR_REG_ALLOC_ORDER 0
1060#endif
1061
9d05bbce
KH
1062/* EXIT_IGNORE_STACK should be nonzero if, when returning from a function,
1063 the stack pointer does not matter. The value is tested only in
1064 functions that have frame pointers. */
1065#ifndef EXIT_IGNORE_STACK
1066#define EXIT_IGNORE_STACK 0
1067#endif
1068
0ede749d
KH
1069/* Assume that case vectors are not pc-relative. */
1070#ifndef CASE_VECTOR_PC_RELATIVE
1071#define CASE_VECTOR_PC_RELATIVE 0
1072#endif
1073
6de9cd9a
DN
1074/* Assume that trampolines need function alignment. */
1075#ifndef TRAMPOLINE_ALIGNMENT
1076#define TRAMPOLINE_ALIGNMENT FUNCTION_BOUNDARY
1077#endif
1078
d220de0e
KH
1079/* Register mappings for target machines without register windows. */
1080#ifndef INCOMING_REGNO
1081#define INCOMING_REGNO(N) (N)
1082#endif
1083
1084#ifndef OUTGOING_REGNO
1085#define OUTGOING_REGNO(N) (N)
1086#endif
1087
bee07d3f
KH
1088#ifndef SHIFT_COUNT_TRUNCATED
1089#define SHIFT_COUNT_TRUNCATED 0
1090#endif
1091
2e4e72b1
ZW
1092#ifndef LEGITIMATE_PIC_OPERAND_P
1093#define LEGITIMATE_PIC_OPERAND_P(X) 1
1094#endif
1095
a4edaf83
AK
1096#ifndef TARGET_MEM_CONSTRAINT
1097#define TARGET_MEM_CONSTRAINT 'm'
1098#endif
1099
1f8551b2
KH
1100#ifndef REVERSIBLE_CC_MODE
1101#define REVERSIBLE_CC_MODE(MODE) 0
1102#endif
1103
07e15286
DE
1104/* Biggest alignment supported by the object file format of this machine. */
1105#ifndef MAX_OFILE_ALIGNMENT
1106#define MAX_OFILE_ALIGNMENT BIGGEST_ALIGNMENT
1107#endif
1108
f62c8a5c
JJ
1109#ifndef FRAME_GROWS_DOWNWARD
1110#define FRAME_GROWS_DOWNWARD 0
1111#endif
1112
2e612c47
MF
1113#ifndef RETURN_ADDR_IN_PREVIOUS_FRAME
1114#define RETURN_ADDR_IN_PREVIOUS_FRAME 0
1115#endif
1116
30e6f306
RH
1117/* On most machines, the CFA coincides with the first incoming parm. */
1118#ifndef ARG_POINTER_CFA_OFFSET
d17c29c3
PB
1119#define ARG_POINTER_CFA_OFFSET(FNDECL) \
1120 (FIRST_PARM_OFFSET (FNDECL) + crtl->args.pretend_args_size)
30e6f306
RH
1121#endif
1122
35d177a2
AO
1123/* On most machines, we use the CFA as DW_AT_frame_base. */
1124#ifndef CFA_FRAME_BASE_OFFSET
1125#define CFA_FRAME_BASE_OFFSET(FNDECL) 0
1126#endif
1127
30e6f306
RH
1128/* The offset from the incoming value of %sp to the top of the stack frame
1129 for the current function. */
1130#ifndef INCOMING_FRAME_SP_OFFSET
1131#define INCOMING_FRAME_SP_OFFSET 0
1132#endif
1133
8521c414
JM
1134#ifndef HARD_REGNO_NREGS_HAS_PADDING
1135#define HARD_REGNO_NREGS_HAS_PADDING(REGNO, MODE) 0
1136#define HARD_REGNO_NREGS_WITH_PADDING(REGNO, MODE) -1
1137#endif
1138
ac294f0b 1139#ifndef OUTGOING_REG_PARM_STACK_SPACE
81464b2c 1140#define OUTGOING_REG_PARM_STACK_SPACE(FNTYPE) 0
ac294f0b
KT
1141#endif
1142
2e3f842f
L
1143/* MAX_STACK_ALIGNMENT is the maximum stack alignment guaranteed by
1144 the backend. MAX_SUPPORTED_STACK_ALIGNMENT is the maximum best
1145 effort stack alignment supported by the backend. If the backend
1146 supports stack alignment, MAX_SUPPORTED_STACK_ALIGNMENT and
1147 MAX_STACK_ALIGNMENT are the same. Otherwise, the incoming stack
1148 boundary will limit the maximum guaranteed stack alignment. */
1149#ifdef MAX_STACK_ALIGNMENT
1150#define MAX_SUPPORTED_STACK_ALIGNMENT MAX_STACK_ALIGNMENT
1151#else
1152#define MAX_STACK_ALIGNMENT STACK_BOUNDARY
1153#define MAX_SUPPORTED_STACK_ALIGNMENT PREFERRED_STACK_BOUNDARY
1154#endif
1155
1156#define SUPPORTS_STACK_ALIGNMENT (MAX_STACK_ALIGNMENT > STACK_BOUNDARY)
1157
76fe54f0
L
1158#ifndef LOCAL_ALIGNMENT
1159#define LOCAL_ALIGNMENT(TYPE, ALIGNMENT) ALIGNMENT
1160#endif
1161
1162#ifndef STACK_SLOT_ALIGNMENT
1163#define STACK_SLOT_ALIGNMENT(TYPE,MODE,ALIGN) \
1164 ((TYPE) ? LOCAL_ALIGNMENT ((TYPE), (ALIGN)) : (ALIGN))
1165#endif
1166
9bfaf89d
JJ
1167#ifndef LOCAL_DECL_ALIGNMENT
1168#define LOCAL_DECL_ALIGNMENT(DECL) \
1169 LOCAL_ALIGNMENT (TREE_TYPE (DECL), DECL_ALIGN (DECL))
1170#endif
1171
ae58e548
JJ
1172#ifndef MINIMUM_ALIGNMENT
1173#define MINIMUM_ALIGNMENT(EXP,MODE,ALIGN) (ALIGN)
1174#endif
1175
6e4f1168
L
1176/* Alignment value for attribute ((aligned)). */
1177#ifndef ATTRIBUTE_ALIGNED_VALUE
1178#define ATTRIBUTE_ALIGNED_VALUE BIGGEST_ALIGNMENT
1179#endif
1180
08e931f3
RS
1181#ifndef SLOW_UNALIGNED_ACCESS
1182#define SLOW_UNALIGNED_ACCESS(MODE, ALIGN) STRICT_ALIGNMENT
1183#endif
1184
4003023f
NC
1185/* For most ports anything that evaluates to a constant symbolic
1186 or integer value is acceptable as a constant address. */
1187#ifndef CONSTANT_ADDRESS_P
1188#define CONSTANT_ADDRESS_P(X) (CONSTANT_P (X) && GET_CODE (X) != CONST_DOUBLE)
1189#endif
1190
1c314335
L
1191#ifndef MAX_FIXED_MODE_SIZE
1192#define MAX_FIXED_MODE_SIZE GET_MODE_BITSIZE (DImode)
1193#endif
1194
5498f011
JM
1195/* Nonzero if structures and unions should be returned in memory.
1196
1197 This should only be defined if compatibility with another compiler or
1198 with an ABI is needed, because it results in slower code. */
1199
1200#ifndef DEFAULT_PCC_STRUCT_RETURN
1201#define DEFAULT_PCC_STRUCT_RETURN 1
1202#endif
77ec4307 1203
0923e946
TS
1204#ifndef INSN_SETS_ARE_DELAYED
1205#define INSN_SETS_ARE_DELAYED(INSN) false
1206#endif
1207
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SB
1208#ifdef GCC_INSN_FLAGS_H
1209/* Dependent default target macro definitions
1210
1211 This section of defaults.h defines target macros that depend on generated
1212 headers. This is a bit awkward: We want to put all default definitions
1213 for target macros in defaults.h, but some of the defaults depend on the
1214 HAVE_* flags defines of insn-flags.h. But insn-flags.h is not always
1215 included by files that do include defaults.h.
1216
1217 Fortunately, the default macro definitions that depend on the HAVE_*
1218 macros are also the ones that will only be used inside GCC itself, i.e.
1219 not in the gen* programs or in target objects like libgcc.
1220
1221 Obviously, it would be best to keep this section of defaults.h as small
1222 as possible, by converting the macros defined below to target hooks or
1223 functions.
1224*/
1225
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SB
1226/* The default branch cost is 1. */
1227#ifndef BRANCH_COST
1228#define BRANCH_COST(speed_p, predictable_p) 1
1229#endif
1230
1231/* If a memory-to-memory move would take MOVE_RATIO or more simple
1232 move-instruction sequences, we will do a movmem or libcall instead. */
1233
1234#ifndef MOVE_RATIO
1235#if defined (HAVE_movmemqi) || defined (HAVE_movmemhi) || defined (HAVE_movmemsi) || defined (HAVE_movmemdi) || defined (HAVE_movmemti)
1236#define MOVE_RATIO(speed) 2
1237#else
1238/* If we are optimizing for space (-Os), cut down the default move ratio. */
1239#define MOVE_RATIO(speed) ((speed) ? 15 : 3)
1240#endif
1241#endif
1242
1243/* If a clear memory operation would take CLEAR_RATIO or more simple
1244 move-instruction sequences, we will do a setmem or libcall instead. */
1245
1246#ifndef CLEAR_RATIO
1247#if defined (HAVE_setmemqi) || defined (HAVE_setmemhi) || defined (HAVE_setmemsi) || defined (HAVE_setmemdi) || defined (HAVE_setmemti)
1248#define CLEAR_RATIO(speed) 2
1249#else
1250/* If we are optimizing for space, cut down the default clear ratio. */
1251#define CLEAR_RATIO(speed) ((speed) ? 15 :3)
1252#endif
1253#endif
1254
1255/* If a memory set (to value other than zero) operation would take
1256 SET_RATIO or more simple move-instruction sequences, we will do a movmem
1257 or libcall instead. */
1258#ifndef SET_RATIO
c3284718 1259#define SET_RATIO(speed) MOVE_RATIO (speed)
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SB
1260#endif
1261
1262/* Supply a default definition for FUNCTION_ARG_PADDING:
1263 usually pad upward, but pad short args downward on
1264 big-endian machines. */
1265
1266#define DEFAULT_FUNCTION_ARG_PADDING(MODE, TYPE) \
1267 (! BYTES_BIG_ENDIAN \
1268 ? upward \
1269 : (((MODE) == BLKmode \
1270 ? ((TYPE) && TREE_CODE (TYPE_SIZE (TYPE)) == INTEGER_CST \
1271 && int_size_in_bytes (TYPE) < (PARM_BOUNDARY / BITS_PER_UNIT)) \
1272 : GET_MODE_BITSIZE (MODE) < PARM_BOUNDARY) \
1273 ? downward : upward))
1274
1275#ifndef FUNCTION_ARG_PADDING
1276#define FUNCTION_ARG_PADDING(MODE, TYPE) \
1277 DEFAULT_FUNCTION_ARG_PADDING ((MODE), (TYPE))
1278#endif
1279
77ec4307
SB
1280/* Supply a default definition of STACK_SAVEAREA_MODE for emit_stack_save.
1281 Normally move_insn, so Pmode stack pointer. */
1282
1283#ifndef STACK_SAVEAREA_MODE
1284#define STACK_SAVEAREA_MODE(LEVEL) Pmode
1285#endif
1286
1287/* Supply a default definition of STACK_SIZE_MODE for
1288 allocate_dynamic_stack_space. Normally PLUS/MINUS, so word_mode. */
1289
1290#ifndef STACK_SIZE_MODE
1291#define STACK_SIZE_MODE word_mode
1292#endif
1293
1294/* Provide default values for the macros controlling stack checking. */
1295
1296/* The default is neither full builtin stack checking... */
1297#ifndef STACK_CHECK_BUILTIN
1298#define STACK_CHECK_BUILTIN 0
1299#endif
1300
1301/* ...nor static builtin stack checking. */
1302#ifndef STACK_CHECK_STATIC_BUILTIN
1303#define STACK_CHECK_STATIC_BUILTIN 0
1304#endif
1305
1306/* The default interval is one page (4096 bytes). */
1307#ifndef STACK_CHECK_PROBE_INTERVAL_EXP
1308#define STACK_CHECK_PROBE_INTERVAL_EXP 12
1309#endif
1310
1311/* The default is not to move the stack pointer. */
1312#ifndef STACK_CHECK_MOVING_SP
1313#define STACK_CHECK_MOVING_SP 0
1314#endif
1315
1316/* This is a kludge to try to capture the discrepancy between the old
1317 mechanism (generic stack checking) and the new mechanism (static
1318 builtin stack checking). STACK_CHECK_PROTECT needs to be bumped
1319 for the latter because part of the protection area is effectively
1320 included in STACK_CHECK_MAX_FRAME_SIZE for the former. */
1321#ifdef STACK_CHECK_PROTECT
1322#define STACK_OLD_CHECK_PROTECT STACK_CHECK_PROTECT
1323#else
677f3fa8
JM
1324#define STACK_OLD_CHECK_PROTECT \
1325 (targetm_common.except_unwind_info (&global_options) == UI_SJLJ \
1326 ? 75 * UNITS_PER_WORD \
d5fabb58 1327 : 8 * 1024)
77ec4307
SB
1328#endif
1329
1330/* Minimum amount of stack required to recover from an anticipated stack
1331 overflow detection. The default value conveys an estimate of the amount
1332 of stack required to propagate an exception. */
1333#ifndef STACK_CHECK_PROTECT
677f3fa8
JM
1334#define STACK_CHECK_PROTECT \
1335 (targetm_common.except_unwind_info (&global_options) == UI_SJLJ \
1336 ? 75 * UNITS_PER_WORD \
d5fabb58 1337 : 12 * 1024)
77ec4307
SB
1338#endif
1339
1340/* Make the maximum frame size be the largest we can and still only need
1341 one probe per function. */
1342#ifndef STACK_CHECK_MAX_FRAME_SIZE
1343#define STACK_CHECK_MAX_FRAME_SIZE \
1344 ((1 << STACK_CHECK_PROBE_INTERVAL_EXP) - UNITS_PER_WORD)
1345#endif
1346
1347/* This is arbitrary, but should be large enough everywhere. */
1348#ifndef STACK_CHECK_FIXED_FRAME_SIZE
1349#define STACK_CHECK_FIXED_FRAME_SIZE (4 * UNITS_PER_WORD)
1350#endif
1351
1352/* Provide a reasonable default for the maximum size of an object to
1353 allocate in the fixed frame. We may need to be able to make this
1354 controllable by the user at some point. */
1355#ifndef STACK_CHECK_MAX_VAR_SIZE
1356#define STACK_CHECK_MAX_VAR_SIZE (STACK_CHECK_MAX_FRAME_SIZE / 100)
1357#endif
1358
7894073c
SE
1359/* By default, the C++ compiler will use function addresses in the
1360 vtable entries. Setting this nonzero tells the compiler to use
1361 function descriptors instead. The value of this macro says how
1362 many words wide the descriptor is (normally 2). It is assumed
1363 that the address of a function descriptor may be treated as a
1364 pointer to a function. */
1365#ifndef TARGET_VTABLE_USES_DESCRIPTORS
1366#define TARGET_VTABLE_USES_DESCRIPTORS 0
1367#endif
1368
3bd36029
RS
1369#ifndef SWITCHABLE_TARGET
1370#define SWITCHABLE_TARGET 0
1371#endif
1372
807e902e
KZ
1373/* If the target supports integers that are wider than two
1374 HOST_WIDE_INTs on the host compiler, then the target should define
1375 TARGET_SUPPORTS_WIDE_INT and make the appropriate fixups.
1376 Otherwise the compiler really is not robust. */
1377#ifndef TARGET_SUPPORTS_WIDE_INT
1378#define TARGET_SUPPORTS_WIDE_INT 0
1379#endif
1380
77ec4307
SB
1381#endif /* GCC_INSN_FLAGS_H */
1382
88657302 1383#endif /* ! GCC_DEFAULTS_H */