1/* Definitions of various defaults for tm.h macros.
2 Copyright (C) 1992-2017 Free Software Foundation, Inc.
3 Contributed by Ron Guilmette (rfg@monkeys.com)
4
5This file is part of GCC.
6
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
9Software Foundation; either version 3, or (at your option) any later
10version.
11
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.
16
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
24<http://www.gnu.org/licenses/>. */
25
26#ifndef GCC_DEFAULTS_H
27#define GCC_DEFAULTS_H
28
29/* How to start an assembler comment. */
30#ifndef ASM_COMMENT_START
31#define ASM_COMMENT_START ";#"
32#endif
33
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. */
37
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
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
58
59/* Choose a reasonable default for ASM_OUTPUT_ASCII. */
60
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 \""); \
73 \
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
98
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
111
112#ifndef IFUNC_ASM_TYPE
113#define IFUNC_ASM_TYPE "gnu_indirect_function"
114#endif
115
116#ifndef TLS_COMMON_ASM_OP
117#define TLS_COMMON_ASM_OP ".tls_common"
118#endif
119
120#if defined (HAVE_AS_TLS) && !defined (ASM_OUTPUT_TLS_COMMON)
121#define ASM_OUTPUT_TLS_COMMON(FILE, DECL, NAME, SIZE) \
122 do \
123 { \
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); \
128 } \
129 while (0)
130#endif
131
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
138/* This is how to output the definition of a user-level label named
139 NAME, such as the label on variable NAME. */
140
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
148
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
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
166/* This is how to output a reference to a user-level label named NAME. */
167
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
175
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) \
182 (*targetm.asm_out.internal_label) (FILE, PREFIX, NUM)
183#endif
184
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 \
190 { \
191 ASM_WEAKEN_LABEL (STREAM, NAME); \
192 if (VALUE) \
193 ASM_OUTPUT_DEF (STREAM, NAME, VALUE); \
194 } \
195 while (0)
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
207#define ASM_OUTPUT_WEAKREF(FILE, DECL, NAME, VALUE) \
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)
217#endif
218#endif
219
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); \
245 fprintf (STREAM, ", " HOST_WIDE_INT_PRINT_DEC "\n", size_); \
246 } \
247 while (0)
248
249#define ASM_OUTPUT_MEASURED_SIZE(STREAM, NAME) \
250 do \
251 { \
252 fputs (SIZE_ASM_OP, STREAM); \
253 assemble_name (STREAM, NAME); \
254 fputs (", .-", STREAM); \
255 assemble_name (STREAM, NAME); \
256 putc ('\n', STREAM); \
257 } \
258 while (0)
259
260#endif
261#endif
262
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
272
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
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
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
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
306
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
311
312/* By default, there is no prefix on user-defined symbols. */
313#ifndef USER_LABEL_PREFIX
314#define USER_LABEL_PREFIX ""
315#endif
316
317/* If the target supports weak symbols, define TARGET_ATTRIBUTE_WEAK to
318 provide a weak attribute. Else define it to nothing.
319
320 This would normally belong in ansidecl.h, but SUPPORTS_WEAK is
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
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
338
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
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
350
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_THROUGH_COLLECT2)
355#ifndef EH_FRAME_SECTION_NAME
356#define EH_FRAME_SECTION_NAME ".eh_frame"
357#endif
358#endif
359
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
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
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
391#ifndef MASK_RETURN_ADDR
392#define MASK_RETURN_ADDR NULL_RTX
393#endif
394
395/* Number of hardware registers that go into the DWARF-2 unwind info.
396 If not defined, equals FIRST_PSEUDO_REGISTER */
397
398#ifndef DWARF_FRAME_REGISTERS
399#define DWARF_FRAME_REGISTERS FIRST_PSEUDO_REGISTER
400#endif
401
402/* Offsets recorded in opcodes are a multiple of this alignment factor. */
403#ifndef DWARF_CIE_DATA_ALIGNMENT
404#ifdef STACK_GROWS_DOWNWARD
405#define DWARF_CIE_DATA_ALIGNMENT (-((int) UNITS_PER_WORD))
406#else
407#define DWARF_CIE_DATA_ALIGNMENT ((int) UNITS_PER_WORD)
408#endif
409#endif
410
411/* The DWARF 2 CFA column which tracks the return address. Normally this
412 is the column for PC, or the first column after all of the hard
413 registers. */
414#ifndef DWARF_FRAME_RETURN_COLUMN
415#ifdef PC_REGNUM
416#define DWARF_FRAME_RETURN_COLUMN DWARF_FRAME_REGNUM (PC_REGNUM)
417#else
418#define DWARF_FRAME_RETURN_COLUMN DWARF_FRAME_REGISTERS
419#endif
420#endif
421
422/* How to renumber registers for dbx and gdb. If not defined, assume
423 no renumbering is necessary. */
424
425#ifndef DBX_REGISTER_NUMBER
426#define DBX_REGISTER_NUMBER(REGNO) (REGNO)
427#endif
428
429/* The mapping from gcc register number to DWARF 2 CFA column number.
430 By default, we just provide columns for all registers. */
431#ifndef DWARF_FRAME_REGNUM
432#define DWARF_FRAME_REGNUM(REG) DBX_REGISTER_NUMBER (REG)
433#endif
434
435/* The mapping from dwarf CFA reg number to internal dwarf reg numbers. */
436#ifndef DWARF_REG_TO_UNWIND_COLUMN
437#define DWARF_REG_TO_UNWIND_COLUMN(REGNO) (REGNO)
438#endif
439
440/* Map register numbers held in the call frame info that gcc has
441 collected using DWARF_FRAME_REGNUM to those that should be output in
442 .debug_frame and .eh_frame. */
443#ifndef DWARF2_FRAME_REG_OUT
444#define DWARF2_FRAME_REG_OUT(REGNO, FOR_EH) (REGNO)
445#endif
446
447/* The size of addresses as they appear in the Dwarf 2 data.
448 Some architectures use word addresses to refer to code locations,
449 but Dwarf 2 info always uses byte addresses. On such machines,
450 Dwarf 2 addresses need to be larger than the architecture's
451 pointers. */
452#ifndef DWARF2_ADDR_SIZE
453#define DWARF2_ADDR_SIZE ((POINTER_SIZE + BITS_PER_UNIT - 1) / BITS_PER_UNIT)
454#endif
455
456/* The size in bytes of a DWARF field indicating an offset or length
457 relative to a debug info section, specified to be 4 bytes in the
458 DWARF-2 specification. The SGI/MIPS ABI defines it to be the same
459 as PTR_SIZE. */
460#ifndef DWARF_OFFSET_SIZE
461#define DWARF_OFFSET_SIZE 4
462#endif
463
464/* The size in bytes of a DWARF 4 type signature. */
465#ifndef DWARF_TYPE_SIGNATURE_SIZE
466#define DWARF_TYPE_SIGNATURE_SIZE 8
467#endif
468
469/* Default sizes for base C types. If the sizes are different for
470 your target, you should override these values by defining the
471 appropriate symbols in your tm.h file. */
472
473#ifndef BITS_PER_WORD
474#define BITS_PER_WORD (BITS_PER_UNIT * UNITS_PER_WORD)
475#endif
476
477#ifndef CHAR_TYPE_SIZE
478#define CHAR_TYPE_SIZE BITS_PER_UNIT
479#endif
480
481#ifndef BOOL_TYPE_SIZE
482/* `bool' has size and alignment `1', on almost all platforms. */
483#define BOOL_TYPE_SIZE CHAR_TYPE_SIZE
484#endif
485
486#ifndef SHORT_TYPE_SIZE
487#define SHORT_TYPE_SIZE (BITS_PER_UNIT * MIN ((UNITS_PER_WORD + 1) / 2, 2))
488#endif
489
490#ifndef INT_TYPE_SIZE
491#define INT_TYPE_SIZE BITS_PER_WORD
492#endif
493
494#ifndef LONG_TYPE_SIZE
495#define LONG_TYPE_SIZE BITS_PER_WORD
496#endif
497
498#ifndef LONG_LONG_TYPE_SIZE
499#define LONG_LONG_TYPE_SIZE (BITS_PER_WORD * 2)
500#endif
501
502#ifndef WCHAR_TYPE_SIZE
503#define WCHAR_TYPE_SIZE INT_TYPE_SIZE
504#endif
505
506#ifndef FLOAT_TYPE_SIZE
507#define FLOAT_TYPE_SIZE BITS_PER_WORD
508#endif
509
510#ifndef DOUBLE_TYPE_SIZE
511#define DOUBLE_TYPE_SIZE (BITS_PER_WORD * 2)
512#endif
513
514#ifndef LONG_DOUBLE_TYPE_SIZE
515#define LONG_DOUBLE_TYPE_SIZE (BITS_PER_WORD * 2)
516#endif
517
518#ifndef DECIMAL32_TYPE_SIZE
519#define DECIMAL32_TYPE_SIZE 32
520#endif
521
522#ifndef DECIMAL64_TYPE_SIZE
523#define DECIMAL64_TYPE_SIZE 64
524#endif
525
526#ifndef DECIMAL128_TYPE_SIZE
527#define DECIMAL128_TYPE_SIZE 128
528#endif
529
530#ifndef SHORT_FRACT_TYPE_SIZE
531#define SHORT_FRACT_TYPE_SIZE BITS_PER_UNIT
532#endif
533
534#ifndef FRACT_TYPE_SIZE
535#define FRACT_TYPE_SIZE (BITS_PER_UNIT * 2)
536#endif
537
538#ifndef LONG_FRACT_TYPE_SIZE
539#define LONG_FRACT_TYPE_SIZE (BITS_PER_UNIT * 4)
540#endif
541
542#ifndef LONG_LONG_FRACT_TYPE_SIZE
543#define LONG_LONG_FRACT_TYPE_SIZE (BITS_PER_UNIT * 8)
544#endif
545
546#ifndef SHORT_ACCUM_TYPE_SIZE
547#define SHORT_ACCUM_TYPE_SIZE (SHORT_FRACT_TYPE_SIZE * 2)
548#endif
549
550#ifndef ACCUM_TYPE_SIZE
551#define ACCUM_TYPE_SIZE (FRACT_TYPE_SIZE * 2)
552#endif
553
554#ifndef LONG_ACCUM_TYPE_SIZE
555#define LONG_ACCUM_TYPE_SIZE (LONG_FRACT_TYPE_SIZE * 2)
556#endif
557
558#ifndef LONG_LONG_ACCUM_TYPE_SIZE
559#define LONG_LONG_ACCUM_TYPE_SIZE (LONG_LONG_FRACT_TYPE_SIZE * 2)
560#endif
561
562/* We let tm.h override the types used here, to handle trivial differences
563 such as the choice of unsigned int or long unsigned int for size_t.
564 When machines start needing nontrivial differences in the size type,
565 it would be best to do something here to figure out automatically
566 from other information what type to use. */
567
568#ifndef SIZE_TYPE
569#define SIZE_TYPE "long unsigned int"
570#endif
571
572#ifndef SIZETYPE
573#define SIZETYPE SIZE_TYPE
574#endif
575
576#ifndef PID_TYPE
577#define PID_TYPE "int"
578#endif
579
580/* If GCC knows the exact uint_least16_t and uint_least32_t types from
581 <stdint.h>, use them for char16_t and char32_t. Otherwise, use
582 these guesses; getting the wrong type of a given width will not
583 affect C++ name mangling because in C++ these are distinct types
584 not typedefs. */
585
586#ifdef UINT_LEAST16_TYPE
587#define CHAR16_TYPE UINT_LEAST16_TYPE
588#else
589#define CHAR16_TYPE "short unsigned int"
590#endif
591
592#ifdef UINT_LEAST32_TYPE
593#define CHAR32_TYPE UINT_LEAST32_TYPE
594#else
595#define CHAR32_TYPE "unsigned int"
596#endif
597
598#ifndef WCHAR_TYPE
599#define WCHAR_TYPE "int"
600#endif
601
602/* WCHAR_TYPE gets overridden by -fshort-wchar. */
603#define MODIFIED_WCHAR_TYPE \
604 (flag_short_wchar ? "short unsigned int" : WCHAR_TYPE)
605
606#ifndef PTRDIFF_TYPE
607#define PTRDIFF_TYPE "long int"
608#endif
609
610#ifndef WINT_TYPE
611#define WINT_TYPE "unsigned int"
612#endif
613
614#ifndef INTMAX_TYPE
615#define INTMAX_TYPE ((INT_TYPE_SIZE == LONG_LONG_TYPE_SIZE) \
616 ? "int" \
617 : ((LONG_TYPE_SIZE == LONG_LONG_TYPE_SIZE) \
618 ? "long int" \
619 : "long long int"))
620#endif
621
622#ifndef UINTMAX_TYPE
623#define UINTMAX_TYPE ((INT_TYPE_SIZE == LONG_LONG_TYPE_SIZE) \
624 ? "unsigned int" \
625 : ((LONG_TYPE_SIZE == LONG_LONG_TYPE_SIZE) \
626 ? "long unsigned int" \
627 : "long long unsigned int"))
628#endif
629
630
631/* There are no default definitions of these <stdint.h> types. */
632
633#ifndef SIG_ATOMIC_TYPE
634#define SIG_ATOMIC_TYPE ((const char *) NULL)
635#endif
636
637#ifndef INT8_TYPE
638#define INT8_TYPE ((const char *) NULL)
639#endif
640
641#ifndef INT16_TYPE
642#define INT16_TYPE ((const char *) NULL)
643#endif
644
645#ifndef INT32_TYPE
646#define INT32_TYPE ((const char *) NULL)
647#endif
648
649#ifndef INT64_TYPE
650#define INT64_TYPE ((const char *) NULL)
651#endif
652
653#ifndef UINT8_TYPE
654#define UINT8_TYPE ((const char *) NULL)
655#endif
656
657#ifndef UINT16_TYPE
658#define UINT16_TYPE ((const char *) NULL)
659#endif
660
661#ifndef UINT32_TYPE
662#define UINT32_TYPE ((const char *) NULL)
663#endif
664
665#ifndef UINT64_TYPE
666#define UINT64_TYPE ((const char *) NULL)
667#endif
668
669#ifndef INT_LEAST8_TYPE
670#define INT_LEAST8_TYPE ((const char *) NULL)
671#endif
672
673#ifndef INT_LEAST16_TYPE
674#define INT_LEAST16_TYPE ((const char *) NULL)
675#endif
676
677#ifndef INT_LEAST32_TYPE
678#define INT_LEAST32_TYPE ((const char *) NULL)
679#endif
680
681#ifndef INT_LEAST64_TYPE
682#define INT_LEAST64_TYPE ((const char *) NULL)
683#endif
684
685#ifndef UINT_LEAST8_TYPE
686#define UINT_LEAST8_TYPE ((const char *) NULL)
687#endif
688
689#ifndef UINT_LEAST16_TYPE
690#define UINT_LEAST16_TYPE ((const char *) NULL)
691#endif
692
693#ifndef UINT_LEAST32_TYPE
694#define UINT_LEAST32_TYPE ((const char *) NULL)
695#endif
696
697#ifndef UINT_LEAST64_TYPE
698#define UINT_LEAST64_TYPE ((const char *) NULL)
699#endif
700
701#ifndef INT_FAST8_TYPE
702#define INT_FAST8_TYPE ((const char *) NULL)
703#endif
704
705#ifndef INT_FAST16_TYPE
706#define INT_FAST16_TYPE ((const char *) NULL)
707#endif
708
709#ifndef INT_FAST32_TYPE
710#define INT_FAST32_TYPE ((const char *) NULL)
711#endif
712
713#ifndef INT_FAST64_TYPE
714#define INT_FAST64_TYPE ((const char *) NULL)
715#endif
716
717#ifndef UINT_FAST8_TYPE
718#define UINT_FAST8_TYPE ((const char *) NULL)
719#endif
720
721#ifndef UINT_FAST16_TYPE
722#define UINT_FAST16_TYPE ((const char *) NULL)
723#endif
724
725#ifndef UINT_FAST32_TYPE
726#define UINT_FAST32_TYPE ((const char *) NULL)
727#endif
728
729#ifndef UINT_FAST64_TYPE
730#define UINT_FAST64_TYPE ((const char *) NULL)
731#endif
732
733#ifndef INTPTR_TYPE
734#define INTPTR_TYPE ((const char *) NULL)
735#endif
736
737#ifndef UINTPTR_TYPE
738#define UINTPTR_TYPE ((const char *) NULL)
739#endif
740
741/* Width in bits of a pointer. Mind the value of the macro `Pmode'. */
742#ifndef POINTER_SIZE
743#define POINTER_SIZE BITS_PER_WORD
744#endif
745#ifndef POINTER_SIZE_UNITS
746#define POINTER_SIZE_UNITS ((POINTER_SIZE + BITS_PER_UNIT - 1) / BITS_PER_UNIT)
747#endif
748
749
750#ifndef PIC_OFFSET_TABLE_REGNUM
751#define PIC_OFFSET_TABLE_REGNUM INVALID_REGNUM
752#endif
753
754#ifndef PIC_OFFSET_TABLE_REG_CALL_CLOBBERED
755#define PIC_OFFSET_TABLE_REG_CALL_CLOBBERED 0
756#endif
757
758#ifndef TARGET_DLLIMPORT_DECL_ATTRIBUTES
759#define TARGET_DLLIMPORT_DECL_ATTRIBUTES 0
760#endif
761
762#ifndef TARGET_DECLSPEC
763#if TARGET_DLLIMPORT_DECL_ATTRIBUTES
764/* If the target supports the "dllimport" attribute, users are
765 probably used to the "__declspec" syntax. */
766#define TARGET_DECLSPEC 1
767#else
768#define TARGET_DECLSPEC 0
769#endif
770#endif
771
772/* By default, the preprocessor should be invoked the same way in C++
773 as in C. */
774#ifndef CPLUSPLUS_CPP_SPEC
775#ifdef CPP_SPEC
776#define CPLUSPLUS_CPP_SPEC CPP_SPEC
777#endif
778#endif
779
780#ifndef ACCUMULATE_OUTGOING_ARGS
781#define ACCUMULATE_OUTGOING_ARGS 0
782#endif
783
784/* By default, use the GNU runtime for Objective C. */
785#ifndef NEXT_OBJC_RUNTIME
786#define NEXT_OBJC_RUNTIME 0
787#endif
788
789/* Supply a default definition for PUSH_ARGS. */
790#ifndef PUSH_ARGS
791#ifdef PUSH_ROUNDING
792#define PUSH_ARGS !ACCUMULATE_OUTGOING_ARGS
793#else
794#define PUSH_ARGS 0
795#endif
796#endif
797
798/* Decide whether a function's arguments should be processed
799 from first to last or from last to first.
800
801 They should if the stack and args grow in opposite directions, but
802 only if we have push insns. */
803
804#ifdef PUSH_ROUNDING
805
806#ifndef PUSH_ARGS_REVERSED
807#if defined (STACK_GROWS_DOWNWARD) != defined (ARGS_GROW_DOWNWARD)
808#define PUSH_ARGS_REVERSED PUSH_ARGS
809#endif
810#endif
811
812#endif
813
814#ifndef PUSH_ARGS_REVERSED
815#define PUSH_ARGS_REVERSED 0
816#endif
817
818/* Default value for the alignment (in bits) a C conformant malloc has to
819 provide. This default is intended to be safe and always correct. */
820#ifndef MALLOC_ABI_ALIGNMENT
821#define MALLOC_ABI_ALIGNMENT BITS_PER_WORD
822#endif
823
824/* If PREFERRED_STACK_BOUNDARY is not defined, set it to STACK_BOUNDARY.
825 STACK_BOUNDARY is required. */
826#ifndef PREFERRED_STACK_BOUNDARY
827#define PREFERRED_STACK_BOUNDARY STACK_BOUNDARY
828#endif
829
830/* Set INCOMING_STACK_BOUNDARY to PREFERRED_STACK_BOUNDARY if it is not
831 defined. */
832#ifndef INCOMING_STACK_BOUNDARY
833#define INCOMING_STACK_BOUNDARY PREFERRED_STACK_BOUNDARY
834#endif
835
836#ifndef TARGET_DEFAULT_PACK_STRUCT
837#define TARGET_DEFAULT_PACK_STRUCT 0
838#endif
839
840/* By default, the vtable entries are void pointers, the so the alignment
841 is the same as pointer alignment. The value of this macro specifies
842 the alignment of the vtable entry in bits. It should be defined only
843 when special alignment is necessary. */
844#ifndef TARGET_VTABLE_ENTRY_ALIGN
845#define TARGET_VTABLE_ENTRY_ALIGN POINTER_SIZE
846#endif
847
848/* There are a few non-descriptor entries in the vtable at offsets below
849 zero. If these entries must be padded (say, to preserve the alignment
850 specified by TARGET_VTABLE_ENTRY_ALIGN), set this to the number of
851 words in each data entry. */
852#ifndef TARGET_VTABLE_DATA_ENTRY_DISTANCE
853#define TARGET_VTABLE_DATA_ENTRY_DISTANCE 1
854#endif
855
856/* Decide whether it is safe to use a local alias for a virtual function
857 when constructing thunks. */
858#ifndef TARGET_USE_LOCAL_THUNK_ALIAS_P
859#ifdef ASM_OUTPUT_DEF
860#define TARGET_USE_LOCAL_THUNK_ALIAS_P(DECL) 1
861#else
862#define TARGET_USE_LOCAL_THUNK_ALIAS_P(DECL) 0
863#endif
864#endif
865
866/* Decide whether target supports aliases. */
867#ifndef TARGET_SUPPORTS_ALIASES
868#ifdef ASM_OUTPUT_DEF
869#define TARGET_SUPPORTS_ALIASES 1
870#else
871#define TARGET_SUPPORTS_ALIASES 0
872#endif
873#endif
874
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
881
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
892
893#ifndef DEFAULT_GDB_EXTENSIONS
894#define DEFAULT_GDB_EXTENSIONS 1
895#endif
896
897/* If more than one debugging type is supported, you must define
898 PREFERRED_DEBUGGING_TYPE to choose the default. */
899
900#if 1 < (defined (DBX_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 */
906
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
911
912#elif defined DWARF2_DEBUGGING_INFO || defined DWARF2_LINENO_DEBUGGING_INFO
913#define PREFERRED_DEBUGGING_TYPE DWARF2_DEBUG
914
915#elif defined VMS_DEBUGGING_INFO
916#define PREFERRED_DEBUGGING_TYPE VMS_AND_DWARF2_DEBUG
917
918#elif defined XCOFF_DEBUGGING_INFO
919#define PREFERRED_DEBUGGING_TYPE XCOFF_DEBUG
920
921#else
922/* No debugging format is supported by this target. */
923#define PREFERRED_DEBUGGING_TYPE NO_DEBUG
924#endif
925
926#ifndef FLOAT_LIB_COMPARE_RETURNS_BOOL
927#define FLOAT_LIB_COMPARE_RETURNS_BOOL(MODE, COMPARISON) false
928#endif
929
930/* True if the targets integer-comparison functions return { 0, 1, 2
931 } to indicate { <, ==, > }. False if { -1, 0, 1 } is used
932 instead. The libgcc routines are biased. */
933#ifndef TARGET_LIB_INT_CMP_BIASED
934#define TARGET_LIB_INT_CMP_BIASED (true)
935#endif
936
937/* If FLOAT_WORDS_BIG_ENDIAN is not defined in the header files,
938 then the word-endianness is the same as for integers. */
939#ifndef FLOAT_WORDS_BIG_ENDIAN
940#define FLOAT_WORDS_BIG_ENDIAN WORDS_BIG_ENDIAN
941#endif
942
943#ifndef REG_WORDS_BIG_ENDIAN
944#define REG_WORDS_BIG_ENDIAN WORDS_BIG_ENDIAN
945#endif
946
947
948#ifndef TARGET_DEC_EVAL_METHOD
949#define TARGET_DEC_EVAL_METHOD 2
950#endif
951
952#ifndef HAS_LONG_COND_BRANCH
953#define HAS_LONG_COND_BRANCH 0
954#endif
955
956#ifndef HAS_LONG_UNCOND_BRANCH
957#define HAS_LONG_UNCOND_BRANCH 0
958#endif
959
960/* Determine whether __cxa_atexit, rather than atexit, is used to
961 register C++ destructors for local statics and global objects. */
962#ifndef DEFAULT_USE_CXA_ATEXIT
963#define DEFAULT_USE_CXA_ATEXIT 0
964#endif
965
966#if GCC_VERSION >= 3000 && defined IN_GCC
967/* These old constraint macros shouldn't appear anywhere in a
968 configuration using MD constraint definitions. */
969#endif
970
971/* Determin whether the target runtime library is Bionic */
972#ifndef TARGET_HAS_BIONIC
973#define TARGET_HAS_BIONIC 0
974#endif
975
976/* Indicate that CLZ and CTZ are undefined at zero. */
977#ifndef CLZ_DEFINED_VALUE_AT_ZERO
978#define CLZ_DEFINED_VALUE_AT_ZERO(MODE, VALUE) 0
979#endif
980#ifndef CTZ_DEFINED_VALUE_AT_ZERO
981#define CTZ_DEFINED_VALUE_AT_ZERO(MODE, VALUE) 0
982#endif
983
984/* Provide a default value for STORE_FLAG_VALUE. */
985#ifndef STORE_FLAG_VALUE
986#define STORE_FLAG_VALUE 1
987#endif
988
989/* This macro is used to determine what the largest unit size that
990 move_by_pieces can use is. */
991
992/* MOVE_MAX_PIECES is the number of bytes at a time which we can
993 move efficiently, as opposed to MOVE_MAX which is the maximum
994 number of bytes we can move with a single instruction. */
995
996#ifndef MOVE_MAX_PIECES
997#define MOVE_MAX_PIECES MOVE_MAX
998#endif
999
1000/* STORE_MAX_PIECES is the number of bytes at a time that we can
1001 store efficiently. Due to internal GCC limitations, this is
1002 MOVE_MAX_PIECES limited by the number of bytes GCC can represent
1003 for an immediate constant. */
1004
1005#ifndef STORE_MAX_PIECES
1006#define STORE_MAX_PIECES MIN (MOVE_MAX_PIECES, 2 * sizeof (HOST_WIDE_INT))
1007#endif
1008
1009/* Likewise for block comparisons. */
1010#ifndef COMPARE_MAX_PIECES
1011#define COMPARE_MAX_PIECES MOVE_MAX_PIECES
1012#endif
1013
1014#ifndef MAX_MOVE_MAX
1015#define MAX_MOVE_MAX MOVE_MAX
1016#endif
1017
1018#ifndef MIN_UNITS_PER_WORD
1019#define MIN_UNITS_PER_WORD UNITS_PER_WORD
1020#endif
1021
1022#ifndef MAX_BITS_PER_WORD
1023#define MAX_BITS_PER_WORD BITS_PER_WORD
1024#endif
1025
1026#ifndef STACK_POINTER_OFFSET
1027#define STACK_POINTER_OFFSET 0
1028#endif
1029
1030#ifndef LOCAL_REGNO
1031#define LOCAL_REGNO(REGNO) 0
1032#endif
1033
1034#ifndef HONOR_REG_ALLOC_ORDER
1035#define HONOR_REG_ALLOC_ORDER 0
1036#endif
1037
1038/* EXIT_IGNORE_STACK should be nonzero if, when returning from a function,
1039 the stack pointer does not matter. The value is tested only in
1040 functions that have frame pointers. */
1041#ifndef EXIT_IGNORE_STACK
1042#define EXIT_IGNORE_STACK 0
1043#endif
1044
1045/* Assume that case vectors are not pc-relative. */
1046#ifndef CASE_VECTOR_PC_RELATIVE
1047#define CASE_VECTOR_PC_RELATIVE 0
1048#endif
1049
1050/* Force minimum alignment to be able to use the least significant bits
1051 for distinguishing descriptor addresses from code addresses. */
1052#define FUNCTION_ALIGNMENT(ALIGN) \
1053 (lang_hooks.custom_function_descriptors \
1054 && targetm.calls.custom_function_descriptors > 0 \
1055 ? MAX ((ALIGN), \
1056 2 * targetm.calls.custom_function_descriptors * BITS_PER_UNIT)\
1057 : (ALIGN))
1058
1059/* Assume that trampolines need function alignment. */
1060#ifndef TRAMPOLINE_ALIGNMENT
1061#define TRAMPOLINE_ALIGNMENT FUNCTION_ALIGNMENT (FUNCTION_BOUNDARY)
1062#endif
1063
1064/* Register mappings for target machines without register windows. */
1065#ifndef INCOMING_REGNO
1066#define INCOMING_REGNO(N) (N)
1067#endif
1068
1069#ifndef OUTGOING_REGNO
1070#define OUTGOING_REGNO(N) (N)
1071#endif
1072
1073#ifndef SHIFT_COUNT_TRUNCATED
1074#define SHIFT_COUNT_TRUNCATED 0
1075#endif
1076
1077#ifndef LEGITIMATE_PIC_OPERAND_P
1078#define LEGITIMATE_PIC_OPERAND_P(X) 1
1079#endif
1080
1081#ifndef TARGET_MEM_CONSTRAINT
1082#define TARGET_MEM_CONSTRAINT 'm'
1083#endif
1084
1085#ifndef REVERSIBLE_CC_MODE
1086#define REVERSIBLE_CC_MODE(MODE) 0
1087#endif
1088
1089/* Biggest alignment supported by the object file format of this machine. */
1090#ifndef MAX_OFILE_ALIGNMENT
1091#define MAX_OFILE_ALIGNMENT BIGGEST_ALIGNMENT
1092#endif
1093
1094#ifndef FRAME_GROWS_DOWNWARD
1095#define FRAME_GROWS_DOWNWARD 0
1096#endif
1097
1098#ifndef RETURN_ADDR_IN_PREVIOUS_FRAME
1099#define RETURN_ADDR_IN_PREVIOUS_FRAME 0
1100#endif
1101
1102/* On most machines, the CFA coincides with the first incoming parm. */
1103#ifndef ARG_POINTER_CFA_OFFSET
1104#define ARG_POINTER_CFA_OFFSET(FNDECL) \
1105 (FIRST_PARM_OFFSET (FNDECL) + crtl->args.pretend_args_size)
1106#endif
1107
1108/* On most machines, we use the CFA as DW_AT_frame_base. */
1109#ifndef CFA_FRAME_BASE_OFFSET
1110#define CFA_FRAME_BASE_OFFSET(FNDECL) 0
1111#endif
1112
1113/* The offset from the incoming value of %sp to the top of the stack frame
1114 for the current function. */
1115#ifndef INCOMING_FRAME_SP_OFFSET
1116#define INCOMING_FRAME_SP_OFFSET 0
1117#endif
1118
1119#ifndef HARD_REGNO_NREGS_HAS_PADDING
1120#define HARD_REGNO_NREGS_HAS_PADDING(REGNO, MODE) 0
1121#define HARD_REGNO_NREGS_WITH_PADDING(REGNO, MODE) -1
1122#endif
1123
1124#ifndef OUTGOING_REG_PARM_STACK_SPACE
1125#define OUTGOING_REG_PARM_STACK_SPACE(FNTYPE) 0
1126#endif
1127
1128/* MAX_STACK_ALIGNMENT is the maximum stack alignment guaranteed by
1129 the backend. MAX_SUPPORTED_STACK_ALIGNMENT is the maximum best
1130 effort stack alignment supported by the backend. If the backend
1131 supports stack alignment, MAX_SUPPORTED_STACK_ALIGNMENT and
1132 MAX_STACK_ALIGNMENT are the same. Otherwise, the incoming stack
1133 boundary will limit the maximum guaranteed stack alignment. */
1134#ifdef MAX_STACK_ALIGNMENT
1135#define MAX_SUPPORTED_STACK_ALIGNMENT MAX_STACK_ALIGNMENT
1136#else
1137#define MAX_STACK_ALIGNMENT STACK_BOUNDARY
1138#define MAX_SUPPORTED_STACK_ALIGNMENT PREFERRED_STACK_BOUNDARY
1139#endif
1140
1141#define SUPPORTS_STACK_ALIGNMENT (MAX_STACK_ALIGNMENT > STACK_BOUNDARY)
1142
1143#ifndef LOCAL_ALIGNMENT
1144#define LOCAL_ALIGNMENT(TYPE, ALIGNMENT) ALIGNMENT
1145#endif
1146
1147#ifndef STACK_SLOT_ALIGNMENT
1148#define STACK_SLOT_ALIGNMENT(TYPE,MODE,ALIGN) \
1149 ((TYPE) ? LOCAL_ALIGNMENT ((TYPE), (ALIGN)) : (ALIGN))
1150#endif
1151
1152#ifndef LOCAL_DECL_ALIGNMENT
1153#define LOCAL_DECL_ALIGNMENT(DECL) \
1154 LOCAL_ALIGNMENT (TREE_TYPE (DECL), DECL_ALIGN (DECL))
1155#endif
1156
1157#ifndef MINIMUM_ALIGNMENT
1158#define MINIMUM_ALIGNMENT(EXP,MODE,ALIGN) (ALIGN)
1159#endif
1160
1161/* Alignment value for attribute ((aligned)). */
1162#ifndef ATTRIBUTE_ALIGNED_VALUE
1163#define ATTRIBUTE_ALIGNED_VALUE BIGGEST_ALIGNMENT
1164#endif
1165
1166/* For most ports anything that evaluates to a constant symbolic
1167 or integer value is acceptable as a constant address. */
1168#ifndef CONSTANT_ADDRESS_P
1169#define CONSTANT_ADDRESS_P(X) (CONSTANT_P (X) && GET_CODE (X) != CONST_DOUBLE)
1170#endif
1171
1172#ifndef MAX_FIXED_MODE_SIZE
1173#define MAX_FIXED_MODE_SIZE GET_MODE_BITSIZE (DImode)
1174#endif
1175
1176/* Nonzero if structures and unions should be returned in memory.
1177
1178 This should only be defined if compatibility with another compiler or
1179 with an ABI is needed, because it results in slower code. */
1180
1181#ifndef DEFAULT_PCC_STRUCT_RETURN
1182#define DEFAULT_PCC_STRUCT_RETURN 1
1183#endif
1184
1185#ifndef PCC_BITFIELD_TYPE_MATTERS
1186#define PCC_BITFIELD_TYPE_MATTERS false
1187#endif
1188
1189#ifndef INSN_SETS_ARE_DELAYED
1190#define INSN_SETS_ARE_DELAYED(INSN) false
1191#endif
1192
1193#ifndef INSN_REFERENCES_ARE_DELAYED
1194#define INSN_REFERENCES_ARE_DELAYED(INSN) false
1195#endif
1196
1197#ifndef NO_FUNCTION_CSE
1198#define NO_FUNCTION_CSE false
1199#endif
1200
1201#ifndef HARD_REGNO_RENAME_OK
1202#define HARD_REGNO_RENAME_OK(FROM, TO) true
1203#endif
1204
1205#ifndef EPILOGUE_USES
1206#define EPILOGUE_USES(REG) false
1207#endif
1208
1209#ifndef ARGS_GROW_DOWNWARD
1210#define ARGS_GROW_DOWNWARD 0
1211#endif
1212
1213#ifndef STACK_GROWS_DOWNWARD
1214#define STACK_GROWS_DOWNWARD 0
1215#endif
1216
1217#ifndef STACK_PUSH_CODE
1218#if STACK_GROWS_DOWNWARD
1219#define STACK_PUSH_CODE PRE_DEC
1220#else
1221#define STACK_PUSH_CODE PRE_INC
1222#endif
1223#endif
1224
1225/* Default value for flag_pie when flag_pie is initialized to -1:
1226 --enable-default-pie: Default flag_pie to -fPIE.
1227 --disable-default-pie: Default flag_pie to 0.
1228 */
1229#ifdef ENABLE_DEFAULT_PIE
1230# ifndef DEFAULT_FLAG_PIE
1231# define DEFAULT_FLAG_PIE 2
1232# endif
1233#else
1234# define DEFAULT_FLAG_PIE 0
1235#endif
1236
1237#ifndef SWITCHABLE_TARGET
1238#define SWITCHABLE_TARGET 0
1239#endif
1240
1241/* If the target supports integers that are wider than two
1242 HOST_WIDE_INTs on the host compiler, then the target should define
1243 TARGET_SUPPORTS_WIDE_INT and make the appropriate fixups.
1244 Otherwise the compiler really is not robust. */
1245#ifndef TARGET_SUPPORTS_WIDE_INT
1246#define TARGET_SUPPORTS_WIDE_INT 0
1247#endif
1248
1249#ifndef SHORT_IMMEDIATES_SIGN_EXTEND
1250#define SHORT_IMMEDIATES_SIGN_EXTEND 0
1251#endif
1252
1253#ifndef WORD_REGISTER_OPERATIONS
1254#define WORD_REGISTER_OPERATIONS 0
1255#endif
1256
1257#ifndef LOAD_EXTEND_OP
1258#define LOAD_EXTEND_OP(M) UNKNOWN
1259#endif
1260
1261#ifndef INITIAL_FRAME_ADDRESS_RTX
1262#define INITIAL_FRAME_ADDRESS_RTX NULL
1263#endif
1264
1265#ifndef SETUP_FRAME_ADDRESSES
1266#define SETUP_FRAME_ADDRESSES() do { } while (0)
1267#endif
1268
1269#ifndef DYNAMIC_CHAIN_ADDRESS
1270#define DYNAMIC_CHAIN_ADDRESS(x) (x)
1271#endif
1272
1273#ifndef FRAME_ADDR_RTX
1274#define FRAME_ADDR_RTX(x) (x)
1275#endif
1276
1277#ifndef REVERSE_CONDITION
1278#define REVERSE_CONDITION(code, mode) reverse_condition (code)
1279#endif
1280
1281#ifndef TARGET_PECOFF
1282#define TARGET_PECOFF 0
1283#endif
1284
1285#ifndef EH_RETURN_HANDLER_RTX
1286#define EH_RETURN_HANDLER_RTX NULL
1287#endif
1288
1289#ifdef GCC_INSN_FLAGS_H
1290/* Dependent default target macro definitions
1291
1292 This section of defaults.h defines target macros that depend on generated
1293 headers. This is a bit awkward: We want to put all default definitions
1294 for target macros in defaults.h, but some of the defaults depend on the
1295 HAVE_* flags defines of insn-flags.h. But insn-flags.h is not always
1296 included by files that do include defaults.h.
1297
1298 Fortunately, the default macro definitions that depend on the HAVE_*
1299 macros are also the ones that will only be used inside GCC itself, i.e.
1300 not in the gen* programs or in target objects like libgcc.
1301
1302 Obviously, it would be best to keep this section of defaults.h as small
1303 as possible, by converting the macros defined below to target hooks or
1304 functions.
1305*/
1306
1307/* The default branch cost is 1. */
1308#ifndef BRANCH_COST
1309#define BRANCH_COST(speed_p, predictable_p) 1
1310#endif
1311
1312/* If a memory-to-memory move would take MOVE_RATIO or more simple
1313 move-instruction sequences, we will do a movmem or libcall instead. */
1314
1315#ifndef MOVE_RATIO
1316#if defined (HAVE_movmemqi) || defined (HAVE_movmemhi) || defined (HAVE_movmemsi) || defined (HAVE_movmemdi) || defined (HAVE_movmemti)
1317#define MOVE_RATIO(speed) 2
1318#else
1319/* If we are optimizing for space (-Os), cut down the default move ratio. */
1320#define MOVE_RATIO(speed) ((speed) ? 15 : 3)
1321#endif
1322#endif
1323
1324/* If a clear memory operation would take CLEAR_RATIO or more simple
1325 move-instruction sequences, we will do a setmem or libcall instead. */
1326
1327#ifndef CLEAR_RATIO
1328#if defined (HAVE_setmemqi) || defined (HAVE_setmemhi) || defined (HAVE_setmemsi) || defined (HAVE_setmemdi) || defined (HAVE_setmemti)
1329#define CLEAR_RATIO(speed) 2
1330#else
1331/* If we are optimizing for space, cut down the default clear ratio. */
1332#define CLEAR_RATIO(speed) ((speed) ? 15 :3)
1333#endif
1334#endif
1335
1336/* If a memory set (to value other than zero) operation would take
1337 SET_RATIO or more simple move-instruction sequences, we will do a movmem
1338 or libcall instead. */
1339#ifndef SET_RATIO
1340#define SET_RATIO(speed) MOVE_RATIO (speed)
1341#endif
1342
1343/* Supply a default definition of STACK_SAVEAREA_MODE for emit_stack_save.
1344 Normally move_insn, so Pmode stack pointer. */
1345
1346#ifndef STACK_SAVEAREA_MODE
1347#define STACK_SAVEAREA_MODE(LEVEL) Pmode
1348#endif
1349
1350/* Supply a default definition of STACK_SIZE_MODE for
1351 allocate_dynamic_stack_space. Normally PLUS/MINUS, so word_mode. */
1352
1353#ifndef STACK_SIZE_MODE
1354#define STACK_SIZE_MODE word_mode
1355#endif
1356
1357/* Default value for flag_stack_protect when flag_stack_protect is initialized to -1:
1358 --enable-default-ssp: Default flag_stack_protect to -fstack-protector-strong.
1359 --disable-default-ssp: Default flag_stack_protect to 0.
1360 */
1361#ifdef ENABLE_DEFAULT_SSP
1362# ifndef DEFAULT_FLAG_SSP
1363# define DEFAULT_FLAG_SSP 3
1364# endif
1365#else
1366# define DEFAULT_FLAG_SSP 0
1367#endif
1368
1369/* Provide default values for the macros controlling stack checking. */
1370
1371/* The default is neither full builtin stack checking... */
1372#ifndef STACK_CHECK_BUILTIN
1373#define STACK_CHECK_BUILTIN 0
1374#endif
1375
1376/* ...nor static builtin stack checking. */
1377#ifndef STACK_CHECK_STATIC_BUILTIN
1378#define STACK_CHECK_STATIC_BUILTIN 0
1379#endif
1380
1381/* The default interval is one page (4096 bytes). */
1382#ifndef STACK_CHECK_PROBE_INTERVAL_EXP
1383#define STACK_CHECK_PROBE_INTERVAL_EXP 12
1384#endif
1385
1386/* The default is not to move the stack pointer. */
1387#ifndef STACK_CHECK_MOVING_SP
1388#define STACK_CHECK_MOVING_SP 0
1389#endif
1390
1391/* This is a kludge to try to capture the discrepancy between the old
1392 mechanism (generic stack checking) and the new mechanism (static
1393 builtin stack checking). STACK_CHECK_PROTECT needs to be bumped
1394 for the latter because part of the protection area is effectively
1395 included in STACK_CHECK_MAX_FRAME_SIZE for the former. */
1396#ifdef STACK_CHECK_PROTECT
1397#define STACK_OLD_CHECK_PROTECT STACK_CHECK_PROTECT
1398#else
1399#define STACK_OLD_CHECK_PROTECT \
1400 (!global_options.x_flag_exceptions \
1401 ? 75 * UNITS_PER_WORD \
1402 : targetm_common.except_unwind_info (&global_options) == UI_SJLJ \
1403 ? 4 * 1024 \
1404 : 8 * 1024)
1405#endif
1406
1407/* Minimum amount of stack required to recover from an anticipated stack
1408 overflow detection. The default value conveys an estimate of the amount
1409 of stack required to propagate an exception. */
1410#ifndef STACK_CHECK_PROTECT
1411#define STACK_CHECK_PROTECT \
1412 (!global_options.x_flag_exceptions \
1413 ? 4 * 1024 \
1414 : targetm_common.except_unwind_info (&global_options) == UI_SJLJ \
1415 ? 8 * 1024 \
1416 : 12 * 1024)
1417#endif
1418
1419/* Make the maximum frame size be the largest we can and still only need
1420 one probe per function. */
1421#ifndef STACK_CHECK_MAX_FRAME_SIZE
1422#define STACK_CHECK_MAX_FRAME_SIZE \
1423 ((1 << STACK_CHECK_PROBE_INTERVAL_EXP) - UNITS_PER_WORD)
1424#endif
1425
1426/* This is arbitrary, but should be large enough everywhere. */
1427#ifndef STACK_CHECK_FIXED_FRAME_SIZE
1428#define STACK_CHECK_FIXED_FRAME_SIZE (4 * UNITS_PER_WORD)
1429#endif
1430
1431/* Provide a reasonable default for the maximum size of an object to
1432 allocate in the fixed frame. We may need to be able to make this
1433 controllable by the user at some point. */
1434#ifndef STACK_CHECK_MAX_VAR_SIZE
1435#define STACK_CHECK_MAX_VAR_SIZE (STACK_CHECK_MAX_FRAME_SIZE / 100)
1436#endif
1437
1438/* By default, the C++ compiler will use function addresses in the
1439 vtable entries. Setting this nonzero tells the compiler to use
1440 function descriptors instead. The value of this macro says how
1441 many words wide the descriptor is (normally 2). It is assumed
1442 that the address of a function descriptor may be treated as a
1443 pointer to a function. */
1444#ifndef TARGET_VTABLE_USES_DESCRIPTORS
1445#define TARGET_VTABLE_USES_DESCRIPTORS 0
1446#endif
1447
1448#endif /* GCC_INSN_FLAGS_H */
1449
1450#ifndef DWARF_GNAT_ENCODINGS_DEFAULT
1451#define DWARF_GNAT_ENCODINGS_DEFAULT DWARF_GNAT_ENCODINGS_GDB
1452#endif
1453
1454#endif /* ! GCC_DEFAULTS_H */
1455