1 /* Get common system includes and various definitions and declarations based
2 on autoconf macros.
3 Copyright (C) 1998-2023 Free Software Foundation, Inc.
4
5 This file is part of GCC.
6
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.
11
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.
16
17 You should have received a copy of the GNU General Public License
18 along with GCC; see the file COPYING3. If not see
19 <http://www.gnu.org/licenses/>. */
20
21
22 #ifndef GCC_SYSTEM_H
23 #define GCC_SYSTEM_H
24
25 /* Define this so that inttypes.h defines the PRI?64 macros even
26 when compiling with a C++ compiler. Define it here so in the
27 event inttypes.h gets pulled in by another header it is already
28 defined. */
29 #define __STDC_FORMAT_MACROS
30
31 /* We must include stdarg.h before stdio.h. */
32 #include <stdarg.h>
33
34 #ifndef va_copy
35 # ifdef __va_copy
36 # define va_copy(d,s) __va_copy (d, s)
37 # else
38 # define va_copy(d,s) ((d) = (s))
39 # endif
40 #endif
41
42 #ifdef HAVE_STDDEF_H
43 # include <stddef.h>
44 #endif
45
46 #include <stdio.h>
47
48 /* Define a generic NULL if one hasn't already been defined. */
49 #ifndef NULL
50 #define NULL 0
51 #endif
52
53 /* Use the unlocked open routines from libiberty. */
54
55 /* Some of these are #define on some systems, e.g. on AIX to redirect
56 the names to 64bit capable functions for LARGE_FILES support. These
57 redefs are pointless here so we can override them. */
58
59 #undef fopen
60 #undef freopen
61
62 #define fopen(PATH, MODE) fopen_unlocked (PATH, MODE)
63 #define fdopen(FILDES, MODE) fdopen_unlocked (FILDES, MODE)
64 #define freopen(PATH, MODE, STREAM) freopen_unlocked (PATH, MODE, STREAM)
65
66 /* The compiler is not a multi-threaded application and therefore we
67 do not have to use the locking functions. In fact, using the locking
68 functions can cause the compiler to be significantly slower under
69 I/O bound conditions (such as -g -O0 on very large source files).
70
71 HAVE_DECL_PUTC_UNLOCKED actually indicates whether or not the stdio
72 code is multi-thread safe by default. If it is set to 0, then do
73 not worry about using the _unlocked functions.
74
75 fputs_unlocked, fwrite_unlocked, and fprintf_unlocked are
76 extensions and need to be prototyped by hand (since we do not
77 define _GNU_SOURCE). */
78
79 #if defined HAVE_DECL_PUTC_UNLOCKED && HAVE_DECL_PUTC_UNLOCKED
80
81 # ifdef HAVE_PUTC_UNLOCKED
82 # undef putc
83 # define putc(C, Stream) putc_unlocked (C, Stream)
84 # endif
85 # ifdef HAVE_PUTCHAR_UNLOCKED
86 # undef putchar
87 # define putchar(C) putchar_unlocked (C)
88 # endif
89 # ifdef HAVE_GETC_UNLOCKED
90 # undef getc
91 # define getc(Stream) getc_unlocked (Stream)
92 # endif
93 # ifdef HAVE_GETCHAR_UNLOCKED
94 # undef getchar
95 # define getchar() getchar_unlocked ()
96 # endif
97 # ifdef HAVE_FPUTC_UNLOCKED
98 # undef fputc
99 # define fputc(C, Stream) fputc_unlocked (C, Stream)
100 # endif
101
102 #ifdef __cplusplus
103 extern "C" {
104 #endif
105
106 # ifdef HAVE_CLEARERR_UNLOCKED
107 # undef clearerr
108 # define clearerr(Stream) clearerr_unlocked (Stream)
109 # if defined (HAVE_DECL_CLEARERR_UNLOCKED) && !HAVE_DECL_CLEARERR_UNLOCKED
110 extern void clearerr_unlocked (FILE *);
111 # endif
112 # endif
113 # ifdef HAVE_FEOF_UNLOCKED
114 # undef feof
115 # define feof(Stream) feof_unlocked (Stream)
116 # if defined (HAVE_DECL_FEOF_UNLOCKED) && !HAVE_DECL_FEOF_UNLOCKED
117 extern int feof_unlocked (FILE *);
118 # endif
119 # endif
120 # ifdef HAVE_FILENO_UNLOCKED
121 # undef fileno
122 # define fileno(Stream) fileno_unlocked (Stream)
123 # if defined (HAVE_DECL_FILENO_UNLOCKED) && !HAVE_DECL_FILENO_UNLOCKED
124 extern int fileno_unlocked (FILE *);
125 # endif
126 # endif
127 # ifdef HAVE_FFLUSH_UNLOCKED
128 # undef fflush
129 # define fflush(Stream) fflush_unlocked (Stream)
130 # if defined (HAVE_DECL_FFLUSH_UNLOCKED) && !HAVE_DECL_FFLUSH_UNLOCKED
131 extern int fflush_unlocked (FILE *);
132 # endif
133 # endif
134 # ifdef HAVE_FGETC_UNLOCKED
135 # undef fgetc
136 # define fgetc(Stream) fgetc_unlocked (Stream)
137 # if defined (HAVE_DECL_FGETC_UNLOCKED) && !HAVE_DECL_FGETC_UNLOCKED
138 extern int fgetc_unlocked (FILE *);
139 # endif
140 # endif
141 # ifdef HAVE_FGETS_UNLOCKED
142 # undef fgets
143 # define fgets(S, n, Stream) fgets_unlocked (S, n, Stream)
144 # if defined (HAVE_DECL_FGETS_UNLOCKED) && !HAVE_DECL_FGETS_UNLOCKED
145 extern char *fgets_unlocked (char *, int, FILE *);
146 # endif
147 # endif
148 # ifdef HAVE_FPUTS_UNLOCKED
149 # undef fputs
150 # define fputs(String, Stream) fputs_unlocked (String, Stream)
151 # if defined (HAVE_DECL_FPUTS_UNLOCKED) && !HAVE_DECL_FPUTS_UNLOCKED
152 extern int fputs_unlocked (const char *, FILE *);
153 # endif
154 # endif
155 # ifdef HAVE_FERROR_UNLOCKED
156 # undef ferror
157 # define ferror(Stream) ferror_unlocked (Stream)
158 # if defined (HAVE_DECL_FERROR_UNLOCKED) && !HAVE_DECL_FERROR_UNLOCKED
159 extern int ferror_unlocked (FILE *);
160 # endif
161 # endif
162 # ifdef HAVE_FREAD_UNLOCKED
163 # undef fread
164 # define fread(Ptr, Size, N, Stream) fread_unlocked (Ptr, Size, N, Stream)
165 # if defined (HAVE_DECL_FREAD_UNLOCKED) && !HAVE_DECL_FREAD_UNLOCKED
166 extern size_t fread_unlocked (void *, size_t, size_t, FILE *);
167 # endif
168 # endif
169 # ifdef HAVE_FWRITE_UNLOCKED
170 # undef fwrite
171 # define fwrite(Ptr, Size, N, Stream) fwrite_unlocked (Ptr, Size, N, Stream)
172 # if defined (HAVE_DECL_FWRITE_UNLOCKED) && !HAVE_DECL_FWRITE_UNLOCKED
173 extern size_t fwrite_unlocked (const void *, size_t, size_t, FILE *);
174 # endif
175 # endif
176 # ifdef HAVE_FPRINTF_UNLOCKED
177 # undef fprintf
178 /* We can't use a function-like macro here because we don't know if
179 we have varargs macros. */
180 # define fprintf fprintf_unlocked
181 # if defined (HAVE_DECL_FPRINTF_UNLOCKED) && !HAVE_DECL_FPRINTF_UNLOCKED
182 extern int fprintf_unlocked (FILE *, const char *, ...);
183 # endif
184 # endif
185
186 #ifdef __cplusplus
187 }
188 #endif
189
190 #endif
191
192 /* ??? Glibc's fwrite/fread_unlocked macros cause
193 "warning: signed and unsigned type in conditional expression". */
194 #undef fread_unlocked
195 #undef fwrite_unlocked
196
197 /* Include <string> before "safe-ctype.h" to avoid GCC poisoning
198 the ctype macros through safe-ctype.h */
199
200 #ifdef __cplusplus
201 #ifdef INCLUDE_STRING
202 # include <string>
203 #endif
204 #endif
205
206 /* There are an extraordinary number of issues with <ctype.h>.
207 The last straw is that it varies with the locale. Use libiberty's
208 replacement instead. */
209 #include "safe-ctype.h"
210
211 #include <sys/types.h>
212
213 #include <errno.h>
214
215 #if !defined (errno) && defined (HAVE_DECL_ERRNO) && !HAVE_DECL_ERRNO
216 extern int errno;
217 #endif
218
219 #ifdef __cplusplus
220 #if defined (INCLUDE_ALGORITHM) || !defined (HAVE_SWAP_IN_UTILITY)
221 # include <algorithm>
222 #endif
223 #ifdef INCLUDE_LIST
224 # include <list>
225 #endif
226 #ifdef INCLUDE_MAP
227 # include <map>
228 #endif
229 #ifdef INCLUDE_SET
230 # include <set>
231 #endif
232 #ifdef INCLUDE_VECTOR
233 # include <vector>
234 #endif
235 #ifdef INCLUDE_ARRAY
236 # include <array>
237 #endif
238 #ifdef INCLUDE_FUNCTIONAL
239 # include <functional>
240 #endif
241 # include <cstring>
242 # include <initializer_list>
243 # include <new>
244 # include <utility>
245 # include <type_traits>
246 #endif
247
248 /* Some of glibc's string inlines cause warnings. Plus we'd rather
249 rely on (and therefore test) GCC's string builtins. */
250 #define __NO_STRING_INLINES
251
252 #ifdef STRING_WITH_STRINGS
253 # include <string.h>
254 # include <strings.h>
255 #else
256 # ifdef HAVE_STRING_H
257 # include <string.h>
258 # else
259 # ifdef HAVE_STRINGS_H
260 # include <strings.h>
261 # endif
262 # endif
263 #endif
264
265 #ifdef HAVE_STDLIB_H
266 # include <stdlib.h>
267 #endif
268
269 /* When compiling C++ we need to include <cstdlib> as well as <stdlib.h> so
270 that it is processed before we poison "malloc"; otherwise, if a source
271 file uses a standard library header that includes <cstdlib>, we will get
272 an error about 'using std::malloc'. */
273 #ifdef __cplusplus
274 #include <cstdlib>
275 #endif
276
277 /* Undef vec_free from AIX stdlib.h header which conflicts with vec.h. */
278 #undef vec_free
279
280 /* If we don't have an overriding definition, set SUCCESS_EXIT_CODE and
281 FATAL_EXIT_CODE to EXIT_SUCCESS and EXIT_FAILURE respectively,
282 or 0 and 1 if those macros are not defined. */
283 #ifndef SUCCESS_EXIT_CODE
284 # ifdef EXIT_SUCCESS
285 # define SUCCESS_EXIT_CODE EXIT_SUCCESS
286 # else
287 # define SUCCESS_EXIT_CODE 0
288 # endif
289 #endif
290
291 #ifndef FATAL_EXIT_CODE
292 # ifdef EXIT_FAILURE
293 # define FATAL_EXIT_CODE EXIT_FAILURE
294 # else
295 # define FATAL_EXIT_CODE 1
296 # endif
297 #endif
298
299 #define ICE_EXIT_CODE 4
300
301 #ifdef HAVE_UNISTD_H
302 # include <unistd.h>
303 #endif
304
305 #ifdef HAVE_SYS_PARAM_H
306 # include <sys/param.h>
307 /* We use these identifiers later and they appear in some vendor param.h's. */
308 # undef PREFETCH
309 # undef m_slot
310 #endif
311
312 #if HAVE_LIMITS_H
313 # include <limits.h>
314 #endif
315
316 /* A macro to determine whether a VALUE lies inclusively within a
317 certain range without evaluating the VALUE more than once. This
318 macro won't warn if the VALUE is unsigned and the LOWER bound is
319 zero, as it would e.g. with "VALUE >= 0 && ...". Note the LOWER
320 bound *is* evaluated twice, and LOWER must not be greater than
321 UPPER. However the bounds themselves can be either positive or
322 negative. */
323 #define IN_RANGE(VALUE, LOWER, UPPER) \
324 ((unsigned HOST_WIDE_INT) (VALUE) - (unsigned HOST_WIDE_INT) (LOWER) \
325 <= (unsigned HOST_WIDE_INT) (UPPER) - (unsigned HOST_WIDE_INT) (LOWER))
326
327 /* Infrastructure for defining missing _MAX and _MIN macros. Note that
328 macros defined with these cannot be used in #if. */
329
330 /* The extra casts work around common compiler bugs. */
331 #define INTTYPE_SIGNED(t) (! ((t) 0 < (t) -1))
332 /* The outer cast is needed to work around a bug in Cray C 5.0.3.0.
333 It is necessary at least when t == time_t. */
334 #define INTTYPE_MINIMUM(t) ((t) (INTTYPE_SIGNED (t) \
335 ? (t) 1 << (sizeof (t) * CHAR_BIT - 1) : (t) 0))
336 #define INTTYPE_MAXIMUM(t) ((t) (~ (t) 0 - INTTYPE_MINIMUM (t)))
337
338 /* Use that infrastructure to provide a few constants. */
339 #ifndef UCHAR_MAX
340 # define UCHAR_MAX INTTYPE_MAXIMUM (unsigned char)
341 #endif
342
343 #ifdef TIME_WITH_SYS_TIME
344 # include <sys/time.h>
345 # include <time.h>
346 #else
347 # if HAVE_SYS_TIME_H
348 # include <sys/time.h>
349 # else
350 # ifdef HAVE_TIME_H
351 # include <time.h>
352 # endif
353 # endif
354 #endif
355
356 #ifdef HAVE_FCNTL_H
357 # include <fcntl.h>
358 #else
359 # ifdef HAVE_SYS_FILE_H
360 # include <sys/file.h>
361 # endif
362 #endif
363
364 #ifdef HAVE_SYS_LOCKING_H
365 # include <sys/locking.h>
366 #endif
367
368 #ifndef SEEK_SET
369 # define SEEK_SET 0
370 # define SEEK_CUR 1
371 # define SEEK_END 2
372 #endif
373 #ifndef F_OK
374 # define F_OK 0
375 # define X_OK 1
376 # define W_OK 2
377 # define R_OK 4
378 #endif
379 #ifndef O_RDONLY
380 # define O_RDONLY 0
381 #endif
382 #ifndef O_WRONLY
383 # define O_WRONLY 1
384 #endif
385 #ifndef O_BINARY
386 # define O_BINARY 0
387 #endif
388
389 /* Some systems define these in, e.g., param.h. We undefine these names
390 here to avoid the warnings. We prefer to use our definitions since we
391 know they are correct. */
392
393 #undef MIN
394 #undef MAX
395 #define MIN(X,Y) ((X) < (Y) ? (X) : (Y))
396 #define MAX(X,Y) ((X) > (Y) ? (X) : (Y))
397
398 /* Returns the least number N such that N * Y >= X. */
399 #define CEIL(x,y) (((x) + (y) - 1) / (y))
400
401 /* This macro rounds x up to the y boundary. */
402 #define ROUND_UP(x,y) (((x) + (y) - 1) & ~((y) - 1))
403
404 /* This macro rounds x down to the y boundary. */
405 #define ROUND_DOWN(x,y) ((x) & ~((y) - 1))
406
407 #ifdef HAVE_SYS_WAIT_H
408 #include <sys/wait.h>
409 #endif
410
411 #ifndef WIFSIGNALED
412 #define WIFSIGNALED(S) (((S) & 0xff) != 0 && ((S) & 0xff) != 0x7f)
413 #endif
414 #ifndef WTERMSIG
415 #define WTERMSIG(S) ((S) & 0x7f)
416 #endif
417 #ifndef WIFEXITED
418 #define WIFEXITED(S) (((S) & 0xff) == 0)
419 #endif
420 #ifndef WEXITSTATUS
421 #define WEXITSTATUS(S) (((S) & 0xff00) >> 8)
422 #endif
423 #ifndef WSTOPSIG
424 #define WSTOPSIG WEXITSTATUS
425 #endif
426 #ifndef WCOREDUMP
427 #define WCOREDUMP(S) ((S) & WCOREFLG)
428 #endif
429 #ifndef WCOREFLG
430 #define WCOREFLG 0200
431 #endif
432
433 #include <signal.h>
434 #if !defined (SIGCHLD) && defined (SIGCLD)
435 # define SIGCHLD SIGCLD
436 #endif
437
438 #ifdef HAVE_SYS_MMAN_H
439 # include <sys/mman.h>
440 #endif
441
442 #ifndef MAP_FAILED
443 # define MAP_FAILED ((void *)-1)
444 #endif
445
446 #if !defined (MAP_ANONYMOUS) && defined (MAP_ANON)
447 # define MAP_ANONYMOUS MAP_ANON
448 #endif
449
450 #ifdef HAVE_SYS_RESOURCE_H
451 # include <sys/resource.h>
452 #endif
453
454 #ifdef HAVE_SYS_TIMES_H
455 # include <sys/times.h>
456 #endif
457
458 /* The HAVE_DECL_* macros are three-state, undefined, 0 or 1. If they
459 are defined to 0 then we must provide the relevant declaration
460 here. These checks will be in the undefined state while configure
461 is running so be careful to test "defined (HAVE_DECL_*)". */
462
463 #ifdef __cplusplus
464 extern "C" {
465 #endif
466
467 #if defined (HAVE_DECL_ATOF) && !HAVE_DECL_ATOF
468 extern double atof (const char *);
469 #endif
470
471 #if defined (HAVE_DECL_ATOL) && !HAVE_DECL_ATOL
472 extern long atol (const char *);
473 #endif
474
475 #if defined (HAVE_DECL_FREE) && !HAVE_DECL_FREE
476 extern void free (void *);
477 #endif
478
479 #if defined (HAVE_DECL_GETCWD) && !HAVE_DECL_GETCWD
480 extern char *getcwd (char *, size_t);
481 #endif
482
483 #if defined (HAVE_DECL_GETENV) && !HAVE_DECL_GETENV
484 extern char *getenv (const char *);
485 #endif
486
487 #if defined (HAVE_DECL_GETOPT) && !HAVE_DECL_GETOPT
488 extern int getopt (int, char * const *, const char *);
489 #endif
490
491 #if defined (HAVE_DECL_GETPAGESIZE) && !HAVE_DECL_GETPAGESIZE
492 extern int getpagesize (void);
493 #endif
494
495 #if defined (HAVE_DECL_GETWD) && !HAVE_DECL_GETWD
496 extern char *getwd (char *);
497 #endif
498
499 #if defined (HAVE_DECL_SBRK) && !HAVE_DECL_SBRK
500 extern void *sbrk (int);
501 #endif
502
503 #if defined (HAVE_DECL_SETENV) && !HAVE_DECL_SETENV
504 int setenv(const char *, const char *, int);
505 #endif
506
507 #if defined (HAVE_DECL_STRSTR) && !HAVE_DECL_STRSTR
508 extern char *strstr (const char *, const char *);
509 #endif
510
511 #if defined (HAVE_DECL_STPCPY) && !HAVE_DECL_STPCPY
512 extern char *stpcpy (char *, const char *);
513 #endif
514
515 #if defined (HAVE_DECL_UNSETENV) && !HAVE_DECL_UNSETENV
516 int unsetenv(const char *);
517 #endif
518
519 #if defined (HAVE_DECL_MALLOC) && !HAVE_DECL_MALLOC
520 extern void *malloc (size_t);
521 #endif
522
523 #if defined (HAVE_DECL_CALLOC) && !HAVE_DECL_CALLOC
524 extern void *calloc (size_t, size_t);
525 #endif
526
527 #if defined (HAVE_DECL_REALLOC) && !HAVE_DECL_REALLOC
528 extern void *realloc (void *, size_t);
529 #endif
530
531 #ifdef __cplusplus
532 }
533 #endif
534
535 #ifdef HAVE_STDINT_H
536 #include <stdint.h>
537 #endif
538
539 #ifdef HAVE_INTTYPES_H
540 #include <inttypes.h>
541 #endif
542
543 #ifndef SIZE_MAX
544 # define SIZE_MAX INTTYPE_MAXIMUM (size_t)
545 #endif
546
547 #ifdef __cplusplus
548 extern "C" {
549 #endif
550
551 /* If the system doesn't provide strsignal, we get it defined in
552 libiberty but no declaration is supplied. */
553 #if !defined (HAVE_STRSIGNAL) \
554 || (defined (HAVE_DECL_STRSIGNAL) && !HAVE_DECL_STRSIGNAL)
555 # ifndef strsignal
556 extern const char *strsignal (int);
557 # endif
558 #endif
559
560 #ifdef HAVE_GETRLIMIT
561 # if defined (HAVE_DECL_GETRLIMIT) && !HAVE_DECL_GETRLIMIT
562 # ifndef getrlimit
563 struct rlimit;
564 extern int getrlimit (int, struct rlimit *);
565 # endif
566 # endif
567 #endif
568
569 #ifdef HAVE_SETRLIMIT
570 # if defined (HAVE_DECL_SETRLIMIT) && !HAVE_DECL_SETRLIMIT
571 # ifndef setrlimit
572 struct rlimit;
573 extern int setrlimit (int, const struct rlimit *);
574 # endif
575 # endif
576 #endif
577
578 #if defined (HAVE_DECL_ABORT) && !HAVE_DECL_ABORT
579 extern void abort (void);
580 #endif
581
582 #if defined (HAVE_DECL_SNPRINTF) && !HAVE_DECL_SNPRINTF
583 extern int snprintf (char *, size_t, const char *, ...);
584 #endif
585
586 #if defined (HAVE_DECL_VSNPRINTF) && !HAVE_DECL_VSNPRINTF
587 extern int vsnprintf (char *, size_t, const char *, va_list);
588 #endif
589
590 #ifdef __cplusplus
591 }
592 #endif
593
594 /* 1 if we have C99 designated initializers. */
595 #if !defined(HAVE_DESIGNATED_INITIALIZERS)
596 #ifdef __cplusplus
597 #define HAVE_DESIGNATED_INITIALIZERS 0
598 #else
599 #define HAVE_DESIGNATED_INITIALIZERS \
600 ((GCC_VERSION >= 2007) || (__STDC_VERSION__ >= 199901L))
601 #endif
602 #endif
603
604 #if !defined(HAVE_DESIGNATED_UNION_INITIALIZERS)
605 #ifdef __cplusplus
606 #define HAVE_DESIGNATED_UNION_INITIALIZERS (GCC_VERSION >= 4007)
607 #else
608 #define HAVE_DESIGNATED_UNION_INITIALIZERS \
609 ((GCC_VERSION >= 2007) || (__STDC_VERSION__ >= 199901L))
610 #endif
611 #endif
612
613 #if HAVE_SYS_STAT_H
614 # include <sys/stat.h>
615 #endif
616
617 /* Test if something is a normal file. */
618 #ifndef S_ISREG
619 #define S_ISREG(m) (((m) & S_IFMT) == S_IFREG)
620 #endif
621
622 /* Test if something is a directory. */
623 #ifndef S_ISDIR
624 #define S_ISDIR(m) (((m) & S_IFMT) == S_IFDIR)
625 #endif
626
627 /* Test if something is a character special file. */
628 #ifndef S_ISCHR
629 #define S_ISCHR(m) (((m) & S_IFMT) == S_IFCHR)
630 #endif
631
632 /* Test if something is a block special file. */
633 #ifndef S_ISBLK
634 #define S_ISBLK(m) (((m) & S_IFMT) == S_IFBLK)
635 #endif
636
637 /* Test if something is a socket. */
638 #ifndef S_ISSOCK
639 # ifdef S_IFSOCK
640 # define S_ISSOCK(m) (((m) & S_IFMT) == S_IFSOCK)
641 # else
642 # define S_ISSOCK(m) 0
643 # endif
644 #endif
645
646 /* Test if something is a FIFO. */
647 #ifndef S_ISFIFO
648 # ifdef S_IFIFO
649 # define S_ISFIFO(m) (((m) & S_IFMT) == S_IFIFO)
650 # else
651 # define S_ISFIFO(m) 0
652 # endif
653 #endif
654
655 /* Define well known filenos if the system does not define them. */
656 #ifndef STDIN_FILENO
657 # define STDIN_FILENO 0
658 #endif
659 #ifndef STDOUT_FILENO
660 # define STDOUT_FILENO 1
661 #endif
662 #ifndef STDERR_FILENO
663 # define STDERR_FILENO 2
664 #endif
665
666 /* Some systems have mkdir that takes a single argument. */
667 #ifdef MKDIR_TAKES_ONE_ARG
668 # define mkdir(a,b) mkdir (a)
669 #endif
670
671 #ifndef HAVE_KILL
672 # define kill(p,s) raise (s)
673 #endif
674
675 /* Provide a way to print an address via printf. */
676 #ifndef HOST_PTR_PRINTF
677 #define HOST_PTR_PRINTF "%p"
678 #endif /* ! HOST_PTR_PRINTF */
679
680 /* By default, colon separates directories in a path. */
681 #ifndef PATH_SEPARATOR
682 #define PATH_SEPARATOR ':'
683 #endif
684
685 /* Filename handling macros. */
686 #include "filenames.h"
687
688 /* These should be phased out in favor of IS_DIR_SEPARATOR, where possible. */
689 #ifndef DIR_SEPARATOR
690 # define DIR_SEPARATOR '/'
691 # ifdef HAVE_DOS_BASED_FILE_SYSTEM
692 # define DIR_SEPARATOR_2 '\\'
693 # endif
694 #endif
695
696 #if defined (ENABLE_PLUGIN) && defined (HAVE_DLFCN_H)
697 /* If plugin support is enabled, we could use libdl. */
698 #include <dlfcn.h>
699 #endif
700
701 /* Do not introduce a gmp.h dependency on the build system. */
702 #ifndef GENERATOR_FILE
703 #include <gmp.h>
704 #endif
705
706 /* Get libiberty declarations. */
707 #include "libiberty.h"
708
709 #undef FFS /* Some systems predefine this symbol; don't let it interfere. */
710 #undef FLOAT /* Likewise. */
711 #undef ABS /* Likewise. */
712 #undef PC /* Likewise. */
713
714 /* Provide a default for the HOST_BIT_BUCKET.
715 This suffices for POSIX-like hosts. */
716
717 #ifndef HOST_BIT_BUCKET
718 #define HOST_BIT_BUCKET "/dev/null"
719 #endif
720
721 #ifndef offsetof
722 #define offsetof(TYPE, MEMBER) ((size_t) &((TYPE *) 0)->MEMBER)
723 #endif
724
725 /* Various error reporting routines want to use __FUNCTION__. */
726 #if (GCC_VERSION < 2007)
727 #ifndef __FUNCTION__
728 #define __FUNCTION__ "?"
729 #endif /* ! __FUNCTION__ */
730 #endif
731
732 /* __builtin_expect(A, B) evaluates to A, but notifies the compiler that
733 the most likely value of A is B. This feature was added at some point
734 between 2.95 and 3.0. Let's use 3.0 as the lower bound for now. */
735 #if (GCC_VERSION < 3000)
736 #define __builtin_expect(a, b) (a)
737 #endif
738
739 #define LIKELY(x) (__builtin_expect ((x), 1))
740 #define UNLIKELY(x) (__builtin_expect ((x), 0))
741
742 /* Some of the headers included by <memory> can use "abort" within a
743 namespace, e.g. "_VSTD::abort();", which fails after we use the
744 preprocessor to redefine "abort" as "fancy_abort" below. */
745
746 #ifdef INCLUDE_MEMORY
747 # include <memory>
748 #endif
749
750 #ifdef INCLUDE_MUTEX
751 # include <mutex>
752 #endif
753
754 #ifdef INCLUDE_SSTREAM
755 # include <sstream>
756 #endif
757
758 #ifdef INCLUDE_MALLOC_H
759 #if defined(HAVE_MALLINFO) || defined(HAVE_MALLINFO2)
760 #include <malloc.h>
761 #endif
762 #endif
763
764 #ifdef INCLUDE_PTHREAD_H
765 #include <pthread.h>
766 #endif
767
768 #ifdef INCLUDE_ISL
769 #ifdef HAVE_isl
770 #include <isl/options.h>
771 #include <isl/ctx.h>
772 #include <isl/val.h>
773 #include <isl/set.h>
774 #include <isl/union_set.h>
775 #include <isl/map.h>
776 #include <isl/union_map.h>
777 #include <isl/aff.h>
778 #include <isl/constraint.h>
779 #include <isl/flow.h>
780 #include <isl/ilp.h>
781 #include <isl/schedule.h>
782 #include <isl/ast_build.h>
783 #include <isl/schedule_node.h>
784 #include <isl/id.h>
785 #include <isl/space.h>
786 #endif
787 #endif
788
789 /* Redefine 'abort' to report an internal error w/o coredump, and
790 reporting the location of the error in the source file.
791 Instead of directly calling 'abort' or 'fancy_abort', GCC code
792 should normally call 'internal_error' with a specific message. */
793 extern void fancy_abort (const char *, int, const char *)
794 ATTRIBUTE_NORETURN ATTRIBUTE_COLD;
795 #define abort() fancy_abort (__FILE__, __LINE__, __FUNCTION__)
796
797 /* Use gcc_assert(EXPR) to test invariants. */
798 #if ENABLE_ASSERT_CHECKING
799 #define gcc_assert(EXPR) \
800 ((void)(!(EXPR) ? fancy_abort (__FILE__, __LINE__, __FUNCTION__), 0 : 0))
801 #elif (GCC_VERSION >= 4005)
802 #define gcc_assert(EXPR) \
803 ((void)(UNLIKELY (!(EXPR)) ? __builtin_unreachable (), 0 : 0))
804 #else
805 /* Include EXPR, so that unused variable warnings do not occur. */
806 #define gcc_assert(EXPR) ((void)(0 && (EXPR)))
807 #endif
808
809 #if CHECKING_P
810 #define gcc_checking_assert(EXPR) gcc_assert (EXPR)
811 #else
812 /* N.B.: in release build EXPR is not evaluated. */
813 #define gcc_checking_assert(EXPR) ((void)(0 && (EXPR)))
814 #endif
815
816 #if GCC_VERSION >= 4000
817 #define ALWAYS_INLINE inline __attribute__ ((always_inline))
818 #else
819 #define ALWAYS_INLINE inline
820 #endif
821
822 #if GCC_VERSION >= 3004
823 #define WARN_UNUSED_RESULT __attribute__ ((__warn_unused_result__))
824 #else
825 #define WARN_UNUSED_RESULT
826 #endif
827
828 /* Use gcc_unreachable() to mark unreachable locations (like an
829 unreachable default case of a switch. Do not use gcc_assert(0). */
830 #if (GCC_VERSION >= 4005) && !ENABLE_ASSERT_CHECKING
831 #define gcc_unreachable() __builtin_unreachable ()
832 #else
833 #define gcc_unreachable() (fancy_abort (__FILE__, __LINE__, __FUNCTION__))
834 #endif
835
836 #if GCC_VERSION >= 7000 && defined(__has_attribute)
837 # if __has_attribute(fallthrough)
838 # define gcc_fallthrough() __attribute__((fallthrough))
839 # else
840 # define gcc_fallthrough()
841 # endif
842 #else
843 # define gcc_fallthrough()
844 #endif
845
846 #if GCC_VERSION >= 3001
847 #define STATIC_CONSTANT_P(X) (__builtin_constant_p (X) && (X))
848 #else
849 #define STATIC_CONSTANT_P(X) (false && (X))
850 #endif
851
852 #ifdef __cplusplus
853 #define STATIC_ASSERT(X) \
854 static_assert ((X), #X)
855 #else
856 #define STATIC_ASSERT(X) \
857 typedef int assertion1[(X) ? 1 : -1] ATTRIBUTE_UNUSED
858 #endif
859
860 /* Provide a fake boolean type. We make no attempt to use the
861 C99 _Bool, as it may not be available in the bootstrap compiler,
862 and even if it is, it is liable to be buggy.
863 This must be after all inclusion of system headers, as some of
864 them will mess us up. */
865
866 #undef TRUE
867 #undef FALSE
868
869 #ifdef __cplusplus
870 /* Obsolete. */
871 # define TRUE true
872 # define FALSE false
873 #else /* !__cplusplus */
874 # undef bool
875 # undef true
876 # undef false
877
878 # define bool unsigned char
879 # define true 1
880 # define false 0
881
882 /* Obsolete. */
883 # define TRUE true
884 # define FALSE false
885 #endif /* !__cplusplus */
886
887 /* Some compilers do not allow the use of unsigned char in bitfields. */
888 #define BOOL_BITFIELD unsigned int
889
890 /* GCC older than 4.4 have broken C++ value initialization handling, see
891 PR11309, PR30111, PR33916, PR82939 and PR84405 for more details. */
892 #if GCC_VERSION > 0 && GCC_VERSION < 4004 && !defined(__clang__)
893 # define BROKEN_VALUE_INITIALIZATION
894 #endif
895
896 /* As the last action in this file, we poison the identifiers that
897 shouldn't be used. Note, luckily gcc-3.0's token-based integrated
898 preprocessor won't trip on poisoned identifiers that arrive from
899 the expansion of macros. E.g. #define strrchr rindex, won't error
900 if rindex is poisoned after this directive is issued and later on
901 strrchr is called.
902
903 Note: We define bypass macros for the few cases where we really
904 want to use the libc memory allocation routines. Otherwise we
905 insist you use the "x" versions from libiberty. */
906
907 #define really_call_malloc malloc
908 #define really_call_calloc calloc
909 #define really_call_realloc realloc
910
911 #if defined(FLEX_SCANNER) || defined(YYBISON) || defined(YYBYACC)
912 /* Flex and bison use malloc and realloc. Yuk. Note that this means
913 really_call_* cannot be used in a .l or .y file. */
914 #define malloc xmalloc
915 #define realloc xrealloc
916 #endif
917
918 #if (GCC_VERSION >= 3000)
919
920 /* Note autoconf checks for prototype declarations and includes
921 system.h while doing so. Only poison these tokens if actually
922 compiling gcc, so that the autoconf declaration tests for malloc
923 etc don't spuriously fail. */
924 #ifdef IN_GCC
925
926 #undef calloc
927 #undef strdup
928 #undef strndup
929 #pragma GCC poison calloc strdup strndup
930
931 #if !defined(FLEX_SCANNER) && !defined(YYBISON)
932 #undef malloc
933 #undef realloc
934 #pragma GCC poison malloc realloc
935 #endif
936
937 /* The %m format should be used when GCC's main diagnostic functions
938 supporting %m are available, and xstrerror from libiberty
939 otherwise. */
940 #undef strerror
941 #pragma GCC poison strerror
942
943 /* loc_t is defined on some systems and too inviting for some
944 programmers to avoid. */
945 #undef loc_t
946 #pragma GCC poison loc_t
947
948 /* Old target macros that have moved to the target hooks structure. */
949 #pragma GCC poison ASM_OPEN_PAREN ASM_CLOSE_PAREN \
950 FUNCTION_PROLOGUE FUNCTION_EPILOGUE \
951 FUNCTION_END_PROLOGUE FUNCTION_BEGIN_EPILOGUE \
952 DECL_MACHINE_ATTRIBUTES COMP_TYPE_ATTRIBUTES INSERT_ATTRIBUTES \
953 VALID_MACHINE_DECL_ATTRIBUTE VALID_MACHINE_TYPE_ATTRIBUTE \
954 SET_DEFAULT_TYPE_ATTRIBUTES SET_DEFAULT_DECL_ATTRIBUTES \
955 MERGE_MACHINE_TYPE_ATTRIBUTES MERGE_MACHINE_DECL_ATTRIBUTES \
956 MD_INIT_BUILTINS MD_EXPAND_BUILTIN ASM_OUTPUT_CONSTRUCTOR \
957 ASM_OUTPUT_DESTRUCTOR SIGNED_CHAR_SPEC MAX_CHAR_TYPE_SIZE \
958 WCHAR_UNSIGNED UNIQUE_SECTION SELECT_SECTION SELECT_RTX_SECTION \
959 ENCODE_SECTION_INFO STRIP_NAME_ENCODING ASM_GLOBALIZE_LABEL \
960 ASM_OUTPUT_MI_THUNK CONST_COSTS RTX_COSTS DEFAULT_RTX_COSTS \
961 ADDRESS_COST MACHINE_DEPENDENT_REORG ASM_FILE_START ASM_FILE_END \
962 ASM_SIMPLIFY_DWARF_ADDR INIT_TARGET_OPTABS INIT_SUBTARGET_OPTABS \
963 INIT_GOFAST_OPTABS MULSI3_LIBCALL MULDI3_LIBCALL DIVSI3_LIBCALL \
964 DIVDI3_LIBCALL UDIVSI3_LIBCALL UDIVDI3_LIBCALL MODSI3_LIBCALL \
965 MODDI3_LIBCALL UMODSI3_LIBCALL UMODDI3_LIBCALL BUILD_VA_LIST_TYPE \
966 PRETEND_OUTGOING_VARARGS_NAMED STRUCT_VALUE_INCOMING_REGNUM \
967 ASM_OUTPUT_SECTION_NAME PROMOTE_FUNCTION_ARGS PROMOTE_FUNCTION_MODE \
968 STRUCT_VALUE_INCOMING STRICT_ARGUMENT_NAMING \
969 PROMOTE_FUNCTION_RETURN PROMOTE_PROTOTYPES STRUCT_VALUE_REGNUM \
970 SETUP_INCOMING_VARARGS EXPAND_BUILTIN_SAVEREGS \
971 DEFAULT_SHORT_ENUMS SPLIT_COMPLEX_ARGS MD_ASM_CLOBBERS \
972 HANDLE_PRAGMA_REDEFINE_EXTNAME HANDLE_PRAGMA_EXTERN_PREFIX \
973 MUST_PASS_IN_STACK FUNCTION_ARG_PASS_BY_REFERENCE \
974 VECTOR_MODE_SUPPORTED_P TARGET_SUPPORTS_HIDDEN \
975 FUNCTION_ARG_PARTIAL_NREGS ASM_OUTPUT_DWARF_DTPREL \
976 ALLOCATE_INITIAL_VALUE LEGITIMIZE_ADDRESS FRAME_POINTER_REQUIRED \
977 CAN_ELIMINATE TRAMPOLINE_TEMPLATE INITIALIZE_TRAMPOLINE \
978 TRAMPOLINE_ADJUST_ADDRESS STATIC_CHAIN STATIC_CHAIN_INCOMING \
979 RETURN_POPS_ARGS UNITS_PER_SIMD_WORD OVERRIDE_OPTIONS \
980 OPTIMIZATION_OPTIONS CLASS_LIKELY_SPILLED_P \
981 USING_SJLJ_EXCEPTIONS TARGET_UNWIND_INFO \
982 CAN_DEBUG_WITHOUT_FP UNLIKELY_EXECUTED_TEXT_SECTION_NAME \
983 HOT_TEXT_SECTION_NAME LEGITIMATE_CONSTANT_P ALWAYS_STRIP_DOTDOT \
984 OUTPUT_ADDR_CONST_EXTRA SMALL_REGISTER_CLASSES ASM_OUTPUT_IDENT \
985 ASM_BYTE_OP MEMBER_TYPE_FORCES_BLK LIBGCC2_HAS_SF_MODE \
986 LIBGCC2_HAS_DF_MODE LIBGCC2_HAS_XF_MODE LIBGCC2_HAS_TF_MODE \
987 CLEAR_BY_PIECES_P MOVE_BY_PIECES_P SET_BY_PIECES_P \
988 STORE_BY_PIECES_P TARGET_FLT_EVAL_METHOD \
989 HARD_REGNO_CALL_PART_CLOBBERED HARD_REGNO_MODE_OK \
990 MODES_TIEABLE_P FUNCTION_ARG_PADDING SLOW_UNALIGNED_ACCESS \
991 HARD_REGNO_NREGS SECONDARY_MEMORY_NEEDED_MODE \
992 SECONDARY_MEMORY_NEEDED CANNOT_CHANGE_MODE_CLASS \
993 TRULY_NOOP_TRUNCATION FUNCTION_ARG_OFFSET CONSTANT_ALIGNMENT \
994 STARTING_FRAME_OFFSET
995
996 /* Target macros only used for code built for the target, that have
997 moved to libgcc-tm.h or have never been present elsewhere. */
998 #pragma GCC poison DECLARE_LIBRARY_RENAMES LIBGCC2_GNU_PREFIX \
999 MD_UNWIND_SUPPORT MD_FROB_UPDATE_CONTEXT ENABLE_EXECUTE_STACK \
1000 REG_VALUE_IN_UNWIND_CONTEXT ASSUME_EXTENDED_UNWIND_CONTEXT
1001
1002 /* Other obsolete target macros, or macros that used to be in target
1003 headers and were not used, and may be obsolete or may never have
1004 been used. */
1005 #pragma GCC poison INT_ASM_OP ASM_OUTPUT_EH_REGION_BEG CPP_PREDEFINES \
1006 ASM_OUTPUT_EH_REGION_END ASM_OUTPUT_LABELREF_AS_INT SMALL_STACK \
1007 DOESNT_NEED_UNWINDER EH_TABLE_LOOKUP OBJC_SELECTORS_WITHOUT_LABELS \
1008 OMIT_EH_TABLE EASY_DIV_EXPR IMPLICIT_FIX_EXPR \
1009 LONGJMP_RESTORE_FROM_STACK MAX_INT_TYPE_SIZE ASM_IDENTIFY_GCC \
1010 STDC_VALUE TRAMPOLINE_ALIGN ASM_IDENTIFY_GCC_AFTER_SOURCE \
1011 SLOW_ZERO_EXTEND SUBREG_REGNO_OFFSET DWARF_LINE_MIN_INSTR_LENGTH \
1012 TRADITIONAL_RETURN_FLOAT NO_BUILTIN_SIZE_TYPE \
1013 NO_BUILTIN_PTRDIFF_TYPE NO_BUILTIN_WCHAR_TYPE NO_BUILTIN_WINT_TYPE \
1014 BLOCK_PROFILER BLOCK_PROFILER_CODE FUNCTION_BLOCK_PROFILER \
1015 FUNCTION_BLOCK_PROFILER_EXIT MACHINE_STATE_SAVE \
1016 MACHINE_STATE_RESTORE SCCS_DIRECTIVE SECTION_ASM_OP BYTEORDER \
1017 ASM_OUTPUT_DEFINE_LABEL_DIFFERENCE_SYMBOL HOST_WORDS_BIG_ENDIAN \
1018 OBJC_PROLOGUE ALLOCATE_TRAMPOLINE HANDLE_PRAGMA ROUND_TYPE_SIZE \
1019 ROUND_TYPE_SIZE_UNIT CONST_SECTION_ASM_OP CRT_GET_RFIB_TEXT \
1020 INSN_CACHE_DEPTH INSN_CACHE_SIZE \
1021 INSN_CACHE_LINE_WIDTH INIT_SECTION_PREAMBLE NEED_ATEXIT ON_EXIT \
1022 EXIT_BODY OBJECT_FORMAT_ROSE MULTIBYTE_CHARS MAP_CHARACTER \
1023 LIBGCC_NEEDS_DOUBLE FINAL_PRESCAN_LABEL DEFAULT_CALLER_SAVES \
1024 LOAD_ARGS_REVERSED MAX_INTEGER_COMPUTATION_MODE \
1025 CONVERT_HARD_REGISTER_TO_SSA_P ASM_OUTPUT_MAIN_SOURCE_FILENAME \
1026 FIRST_INSN_ADDRESS TEXT_SECTION SHARED_BSS_SECTION_ASM_OP \
1027 PROMOTED_MODE EXPAND_BUILTIN_VA_END \
1028 LINKER_DOES_NOT_WORK_WITH_DWARF2 FUNCTION_ARG_KEEP_AS_REFERENCE \
1029 GIV_SORT_CRITERION MAX_LONG_TYPE_SIZE MAX_LONG_DOUBLE_TYPE_SIZE \
1030 MAX_WCHAR_TYPE_SIZE SHARED_SECTION_ASM_OP INTEGRATE_THRESHOLD \
1031 FINAL_REG_PARM_STACK_SPACE MAYBE_REG_PARM_STACK_SPACE \
1032 TRADITIONAL_PIPELINE_INTERFACE DFA_PIPELINE_INTERFACE \
1033 BUILTIN_SETJMP_FRAME_VALUE \
1034 SUNOS4_SHARED_LIBRARIES PROMOTE_FOR_CALL_ONLY \
1035 SPACE_AFTER_L_OPTION NO_RECURSIVE_FUNCTION_CSE \
1036 DEFAULT_MAIN_RETURN TARGET_MEM_FUNCTIONS EXPAND_BUILTIN_VA_ARG \
1037 COLLECT_PARSE_FLAG DWARF2_GENERATE_TEXT_SECTION_LABEL WINNING_GDB \
1038 ASM_OUTPUT_FILENAME ASM_OUTPUT_SOURCE_LINE FILE_NAME_JOINER \
1039 GDB_INV_REF_REGPARM_STABS_LETTER \
1040 PUT_SDB_SRC_FILE STABS_GCC_MARKER SDB_GENERATE_FAKE \
1041 NON_SAVING_SETJMP TARGET_LATE_RTL_PROLOGUE_EPILOGUE \
1042 CASE_DROPS_THROUGH TARGET_BELL TARGET_BS TARGET_CR TARGET_DIGIT0 \
1043 TARGET_ESC TARGET_FF TARGET_NEWLINE TARGET_TAB TARGET_VT \
1044 LINK_LIBGCC_SPECIAL DONT_ACCESS_GBLS_AFTER_EPILOGUE \
1045 TARGET_OPTIONS TARGET_SWITCHES EXTRA_CC_MODES FINALIZE_PIC \
1046 PREDICATE_CODES SPECIAL_MODE_PREDICATES UNALIGNED_WORD_ASM_OP \
1047 EXTRA_SECTIONS EXTRA_SECTION_FUNCTIONS READONLY_DATA_SECTION \
1048 TARGET_ASM_EXCEPTION_SECTION TARGET_ASM_EH_FRAME_SECTION \
1049 SMALL_ARG_MAX ASM_OUTPUT_SHARED_BSS ASM_OUTPUT_SHARED_COMMON \
1050 ASM_OUTPUT_SHARED_LOCAL ASM_MAKE_LABEL_LINKONCE \
1051 STACK_CHECK_PROBE_INTERVAL STACK_CHECK_PROBE_LOAD \
1052 ORDER_REGS_FOR_LOCAL_ALLOC FUNCTION_OUTGOING_VALUE \
1053 ASM_DECLARE_CONSTANT_NAME MODIFY_TARGET_NAME SWITCHES_NEED_SPACES \
1054 SWITCH_CURTAILS_COMPILATION SWITCH_TAKES_ARG WORD_SWITCH_TAKES_ARG \
1055 TARGET_OPTION_TRANSLATE_TABLE HANDLE_PRAGMA_PACK_PUSH_POP \
1056 HANDLE_SYSV_PRAGMA HANDLE_PRAGMA_WEAK CONDITIONAL_REGISTER_USAGE \
1057 FUNCTION_ARG_BOUNDARY MUST_USE_SJLJ_EXCEPTIONS US_SOFTWARE_GOFAST \
1058 USING_SVR4_H SVR4_ASM_SPEC FUNCTION_ARG FUNCTION_ARG_ADVANCE \
1059 FUNCTION_INCOMING_ARG IRA_COVER_CLASSES TARGET_VERSION \
1060 MACHINE_TYPE TARGET_HAS_TARGETCM ASM_OUTPUT_BSS \
1061 SETJMP_VIA_SAVE_AREA FORBIDDEN_INC_DEC_CLASSES \
1062 PREFERRED_OUTPUT_RELOAD_CLASS SYSTEM_INCLUDE_DIR \
1063 STANDARD_INCLUDE_DIR STANDARD_INCLUDE_COMPONENT \
1064 LINK_ELIMINATE_DUPLICATE_LDIRECTORIES MIPS_DEBUGGING_INFO \
1065 IDENT_ASM_OP ALL_COP_ADDITIONAL_REGISTER_NAMES \
1066 RANGE_TEST_NON_SHORT_CIRCUIT \
1067 REAL_VALUE_TRUNCATE REVERSE_CONDEXEC_PREDICATES_P \
1068 TARGET_ALIGN_ANON_BITFIELDS TARGET_NARROW_VOLATILE_BITFIELDS \
1069 IDENT_ASM_OP UNALIGNED_SHORT_ASM_OP UNALIGNED_INT_ASM_OP \
1070 UNALIGNED_LONG_ASM_OP UNALIGNED_DOUBLE_INT_ASM_OP \
1071 USE_COMMON_FOR_ONE_ONLY IFCVT_EXTRA_FIELDS IFCVT_INIT_EXTRA_FIELDS \
1072 CASE_USE_BIT_TESTS FIXUNS_TRUNC_LIKE_FIX_TRUNC \
1073 GO_IF_MODE_DEPENDENT_ADDRESS DELAY_SLOTS_FOR_EPILOGUE \
1074 ELIGIBLE_FOR_EPILOGUE_DELAY TARGET_C99_FUNCTIONS TARGET_HAS_SINCOS \
1075 REG_CLASS_FROM_LETTER CONST_OK_FOR_LETTER_P \
1076 CONST_DOUBLE_OK_FOR_LETTER_P EXTRA_CONSTRAINT \
1077 REG_CLASS_FROM_CONSTRAINT REG_CLASS_FOR_CONSTRAINT \
1078 EXTRA_CONSTRAINT_STR EXTRA_MEMORY_CONSTRAINT \
1079 EXTRA_ADDRESS_CONSTRAINT CONST_DOUBLE_OK_FOR_CONSTRAINT_P \
1080 CALLER_SAVE_PROFITABLE LARGEST_EXPONENT_IS_NORMAL \
1081 ROUND_TOWARDS_ZERO SF_SIZE DF_SIZE XF_SIZE TF_SIZE LIBGCC2_TF_CEXT \
1082 LIBGCC2_LONG_DOUBLE_TYPE_SIZE STRUCT_VALUE \
1083 EH_FRAME_IN_DATA_SECTION TARGET_FLT_EVAL_METHOD_NON_DEFAULT \
1084 JCR_SECTION_NAME TARGET_USE_JCR_SECTION SDB_DEBUGGING_INFO \
1085 SDB_DEBUG NO_IMPLICIT_EXTERN_C NOTICE_UPDATE_CC \
1086 CC_STATUS_MDEP_INIT CC_STATUS_MDEP CC_STATUS SLOW_SHORT_ACCESS
1087
1088 /* Hooks that are no longer used. */
1089 #pragma GCC poison LANG_HOOKS_FUNCTION_MARK LANG_HOOKS_FUNCTION_FREE \
1090 LANG_HOOKS_MARK_TREE LANG_HOOKS_INSERT_DEFAULT_ATTRIBUTES \
1091 LANG_HOOKS_TREE_INLINING_ESTIMATE_NUM_INSNS \
1092 LANG_HOOKS_PUSHLEVEL LANG_HOOKS_SET_BLOCK \
1093 LANG_HOOKS_MAYBE_BUILD_CLEANUP LANG_HOOKS_UPDATE_DECL_AFTER_SAVING \
1094 LANG_HOOKS_POPLEVEL LANG_HOOKS_TRUTHVALUE_CONVERSION \
1095 TARGET_PROMOTE_FUNCTION_ARGS TARGET_PROMOTE_FUNCTION_RETURN \
1096 LANG_HOOKS_MISSING_ARGUMENT LANG_HOOKS_HASH_TYPES \
1097 TARGET_HANDLE_OFAST TARGET_OPTION_OPTIMIZATION \
1098 TARGET_IRA_COVER_CLASSES TARGET_HELP \
1099 TARGET_HANDLE_PRAGMA_EXTERN_PREFIX \
1100 TARGET_VECTORIZE_BUILTIN_MUL_WIDEN_EVEN \
1101 TARGET_VECTORIZE_BUILTIN_MUL_WIDEN_ODD \
1102 TARGET_MD_ASM_CLOBBERS TARGET_RELAXED_ORDERING \
1103 EXTENDED_SDB_BASIC_TYPES TARGET_INVALID_PARAMETER_TYPE \
1104 TARGET_INVALID_RETURN_TYPE
1105
1106 /* Arrays that were deleted in favor of a functional interface. */
1107 #pragma GCC poison built_in_decls implicit_built_in_decls
1108
1109 /* Hooks into libgcc2. */
1110 #pragma GCC poison LIBGCC2_DOUBLE_TYPE_SIZE LIBGCC2_WORDS_BIG_ENDIAN \
1111 LIBGCC2_FLOAT_WORDS_BIG_ENDIAN
1112
1113 /* Miscellaneous macros that are no longer used. */
1114 #pragma GCC poison USE_MAPPED_LOCATION GET_ENVIRONMENT
1115
1116 /* Libiberty macros that are no longer used in GCC. */
1117 #undef ANSI_PROTOTYPES
1118 #undef PTR_CONST
1119 #undef LONG_DOUBLE
1120 #undef VPARAMS
1121 #undef VA_OPEN
1122 #undef VA_FIXEDARG
1123 #undef VA_CLOSE
1124 #undef VA_START
1125 #pragma GCC poison ANSI_PROTOTYPES PTR_CONST LONG_DOUBLE VPARAMS VA_OPEN \
1126 VA_FIXEDARG VA_CLOSE VA_START
1127 #endif /* IN_GCC */
1128
1129 /* Front ends should never have to include middle-end headers. Enforce
1130 this by poisoning the header double-include protection defines. */
1131 #ifdef IN_GCC_FRONTEND
1132 #pragma GCC poison GCC_RTL_H GCC_EXCEPT_H GCC_EXPR_H
1133 #endif
1134
1135 /* Note: not all uses of the `index' token (e.g. variable names and
1136 structure members) have been eliminated. */
1137 #undef bcopy
1138 #undef bzero
1139 #undef bcmp
1140 #undef rindex
1141 #pragma GCC poison bcopy bzero bcmp rindex
1142
1143 /* Poison ENABLE_CHECKING macro that should be replaced with
1144 'if (flag_checking)', or with CHECKING_P macro. */
1145 #pragma GCC poison ENABLE_CHECKING
1146
1147 #endif /* GCC >= 3.0 */
1148
1149 /* This macro allows casting away const-ness to pass -Wcast-qual
1150 warnings. DO NOT USE THIS UNLESS YOU REALLY HAVE TO! It should
1151 only be used in certain specific cases. One valid case is where
1152 the C standard definitions or prototypes force you to. E.g. if you
1153 need to free a const object, or if you pass a const string to
1154 execv, et al. Another valid use would be in an allocation function
1155 that creates const objects that need to be initialized. In some
1156 cases we have non-const functions that return the argument
1157 (e.g. next_nonnote_insn). Rather than create const shadow
1158 functions, we can cast away const-ness in calling these interfaces
1159 if we're careful to verify that the called function does indeed not
1160 modify its argument and the return value is only used in a const
1161 context. (This can be somewhat dangerous as these assumptions can
1162 change after the fact). Beyond these uses, most other cases of
1163 using this macro should be viewed with extreme caution. */
1164
1165 #ifdef __cplusplus
1166 #define CONST_CAST2(TOTYPE,FROMTYPE,X) (const_cast<TOTYPE> (X))
1167 #else
1168 #if defined(__GNUC__) && GCC_VERSION > 4000
1169 /* GCC 4.0.x has a bug where it may ICE on this expression,
1170 so does GCC 3.4.x (PR17436). */
1171 #define CONST_CAST2(TOTYPE,FROMTYPE,X) ((__extension__(union {FROMTYPE _q; TOTYPE _nq;})(X))._nq)
1172 #elif defined(__GNUC__)
1173 inline char *
1174 helper_const_non_const_cast (const char *p)
1175 {
1176 union {
1177 const char *const_c;
1178 char *c;
1179 } val;
1180 val.const_c = p;
1181 return val.c;
1182 }
1183
1184 #define CONST_CAST2(TOTYPE,FROMTYPE,X) \
1185 ((TOTYPE) helper_const_non_const_cast ((const char *) (FROMTYPE) (X)))
1186 #else
1187 #define CONST_CAST2(TOTYPE,FROMTYPE,X) ((TOTYPE)(FROMTYPE)(X))
1188 #endif
1189 #endif
1190 #define CONST_CAST(TYPE,X) CONST_CAST2 (TYPE, const TYPE, (X))
1191 #define CONST_CAST_TREE(X) CONST_CAST (union tree_node *, (X))
1192 #define CONST_CAST_RTX(X) CONST_CAST (struct rtx_def *, (X))
1193 #define CONST_CAST_RTX_INSN(X) CONST_CAST (struct rtx_insn *, (X))
1194 #define CONST_CAST_BB(X) CONST_CAST (struct basic_block_def *, (X))
1195 #define CONST_CAST_GIMPLE(X) CONST_CAST (gimple *, (X))
1196
1197 /* Activate certain diagnostics as warnings (not errors via the
1198 -Werror flag). */
1199 #if GCC_VERSION >= 4003
1200 /* If asserts are disabled, activate -Wuninitialized as a warning (not
1201 an error/-Werror). */
1202 #ifndef ENABLE_ASSERT_CHECKING
1203 #pragma GCC diagnostic warning "-Wuninitialized"
1204 #endif
1205 #endif
1206
1207 #ifdef ENABLE_VALGRIND_ANNOTATIONS
1208 # ifdef HAVE_VALGRIND_MEMCHECK_H
1209 # include <valgrind/memcheck.h>
1210 # elif defined HAVE_MEMCHECK_H
1211 # include <memcheck.h>
1212 # else
1213 # include <valgrind.h>
1214 # endif
1215 /* Compatibility macros to let valgrind 3.1 work. */
1216 # ifndef VALGRIND_MAKE_MEM_NOACCESS
1217 # define VALGRIND_MAKE_MEM_NOACCESS VALGRIND_MAKE_NOACCESS
1218 # endif
1219 # ifndef VALGRIND_MAKE_MEM_DEFINED
1220 # define VALGRIND_MAKE_MEM_DEFINED VALGRIND_MAKE_READABLE
1221 # endif
1222 # ifndef VALGRIND_MAKE_MEM_UNDEFINED
1223 # define VALGRIND_MAKE_MEM_UNDEFINED VALGRIND_MAKE_WRITABLE
1224 # endif
1225 #else
1226 /* Avoid #ifdef:s when we can help it. */
1227 #define VALGRIND_DISCARD(x)
1228 #define VALGRIND_MALLOCLIKE_BLOCK(w,x,y,z)
1229 #define VALGRIND_FREELIKE_BLOCK(x,y)
1230 #endif
1231
1232 /* Macros to temporarily ignore some warnings. */
1233 #if GCC_VERSION >= 6000
1234 #define GCC_DIAGNOSTIC_STRINGIFY(x) #x
1235 #define GCC_DIAGNOSTIC_PUSH_IGNORED(x) \
1236 _Pragma ("GCC diagnostic push") \
1237 _Pragma (GCC_DIAGNOSTIC_STRINGIFY (GCC diagnostic ignored #x))
1238 #define GCC_DIAGNOSTIC_POP _Pragma ("GCC diagnostic pop")
1239 #else
1240 #define GCC_DIAGNOSTIC_PUSH_IGNORED(x)
1241 #define GCC_DIAGNOSTIC_POP
1242 #endif
1243
1244 /* In LTO -fwhole-program build we still want to keep the debug functions available
1245 for debugger. Mark them as used to prevent removal. */
1246 #if (GCC_VERSION > 4000)
1247 #define DEBUG_FUNCTION __attribute__ ((__used__))
1248 #define DEBUG_VARIABLE __attribute__ ((__used__))
1249 #else
1250 #define DEBUG_FUNCTION
1251 #define DEBUG_VARIABLE
1252 #endif
1253
1254 /* General macro to extract bit Y of X. */
1255 #define TEST_BIT(X, Y) (((X) >> (Y)) & 1)
1256
1257 /* Get definitions of HOST_WIDE_INT. */
1258 #include "hwint.h"
1259
1260 typedef int sort_r_cmp_fn (const void *, const void *, void *);
1261 void qsort_chk (void *, size_t, size_t, sort_r_cmp_fn *, void *);
1262 void gcc_sort_r (void *, size_t, size_t, sort_r_cmp_fn *, void *);
1263 void gcc_qsort (void *, size_t, size_t, int (*)(const void *, const void *));
1264 void gcc_stablesort (void *, size_t, size_t,
1265 int (*)(const void *, const void *));
1266 void gcc_stablesort_r (void *, size_t, size_t, sort_r_cmp_fn *, void *data);
1267 /* Redirect four-argument qsort calls to gcc_qsort; one-argument invocations
1268 correspond to vec::qsort, and use C qsort internally. */
1269 #define PP_5th(a1, a2, a3, a4, a5, ...) a5
1270 #undef qsort
1271 #define qsort(...) PP_5th (__VA_ARGS__, gcc_qsort, 3, 2, qsort, 0) (__VA_ARGS__)
1272
1273 #define ONE_K 1024
1274 #define ONE_M (ONE_K * ONE_K)
1275 #define ONE_G (ONE_K * ONE_M)
1276
1277 /* Display a number as an integer multiple of either:
1278 - 1024, if said integer is >= to 10 K (in base 2)
1279 - 1024 * 1024, if said integer is >= 10 M in (base 2)
1280 */
1281 #define SIZE_SCALE(x) (((x) < 10 * ONE_K \
1282 ? (x) \
1283 : ((x) < 10 * ONE_M \
1284 ? (x) / ONE_K \
1285 : (x) / ONE_M)))
1286
1287 /* For a given integer, display either:
1288 - the character 'k', if the number is higher than 10 K (in base 2)
1289 but strictly lower than 10 M (in base 2)
1290 - the character 'M' if the number is higher than 10 M (in base2)
1291 - the charcter ' ' if the number is strictly lower than 10 K */
1292 #define SIZE_LABEL(x) ((x) < 10 * ONE_K ? ' ' : ((x) < 10 * ONE_M ? 'k' : 'M'))
1293
1294 /* Display an integer amount as multiple of 1K or 1M (in base 2).
1295 Display the correct unit (either k, M, or ' ') after the amount, as
1296 well. */
1297 #define SIZE_AMOUNT(size) (uint64_t)SIZE_SCALE (size), SIZE_LABEL (size)
1298
1299 /* Format string particle for printing a SIZE_AMOUNT with N being the width
1300 of the number. */
1301 #define PRsa(n) "%" #n PRIu64 "%c"
1302
1303 /* System headers may define NULL to be an integer (e.g. 0L), which cannot be
1304 used safely in certain contexts (e.g. as sentinels). Redefine NULL to
1305 nullptr in order to make it safer. Note that this might confuse system
1306 headers, however, by convention they must not be included after this point.
1307 */
1308 #ifdef __cplusplus
1309 #undef NULL
1310 #define NULL nullptr
1311 #endif
1312
1313 /* Return true if STR string starts with PREFIX. */
1314
1315 inline bool
1316 startswith (const char *str, const char *prefix)
1317 {
1318 return strncmp (str, prefix, strlen (prefix)) == 0;
1319 }
1320
1321 /* Return true if STR string ends with SUFFIX. */
1322
1323 inline bool
1324 endswith (const char *str, const char *suffix)
1325 {
1326 size_t str_len = strlen (str);
1327 size_t suffix_len = strlen (suffix);
1328 if (str_len < suffix_len)
1329 return false;
1330
1331 return memcmp (str + str_len - suffix_len, suffix, suffix_len) == 0;
1332 }
1333
1334 #endif /* ! GCC_SYSTEM_H */