1 /* Get common system includes and various definitions and declarations based
2 on autoconf macros.
3 Copyright (C) 1998-2021 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 <new>
243 # include <utility>
244 # include <type_traits>
245 #endif
246
247 /* Some of glibc's string inlines cause warnings. Plus we'd rather
248 rely on (and therefore test) GCC's string builtins. */
249 #define __NO_STRING_INLINES
250
251 #ifdef STRING_WITH_STRINGS
252 # include <string.h>
253 # include <strings.h>
254 #else
255 # ifdef HAVE_STRING_H
256 # include <string.h>
257 # else
258 # ifdef HAVE_STRINGS_H
259 # include <strings.h>
260 # endif
261 # endif
262 #endif
263
264 #ifdef HAVE_STDLIB_H
265 # include <stdlib.h>
266 #endif
267
268 /* When compiling C++ we need to include <cstdlib> as well as <stdlib.h> so
269 that it is processed before we poison "malloc"; otherwise, if a source
270 file uses a standard library header that includes <cstdlib>, we will get
271 an error about 'using std::malloc'. */
272 #ifdef __cplusplus
273 #include <cstdlib>
274 #endif
275
276 /* Undef vec_free from AIX stdlib.h header which conflicts with vec.h. */
277 #undef vec_free
278
279 /* If we don't have an overriding definition, set SUCCESS_EXIT_CODE and
280 FATAL_EXIT_CODE to EXIT_SUCCESS and EXIT_FAILURE respectively,
281 or 0 and 1 if those macros are not defined. */
282 #ifndef SUCCESS_EXIT_CODE
283 # ifdef EXIT_SUCCESS
284 # define SUCCESS_EXIT_CODE EXIT_SUCCESS
285 # else
286 # define SUCCESS_EXIT_CODE 0
287 # endif
288 #endif
289
290 #ifndef FATAL_EXIT_CODE
291 # ifdef EXIT_FAILURE
292 # define FATAL_EXIT_CODE EXIT_FAILURE
293 # else
294 # define FATAL_EXIT_CODE 1
295 # endif
296 #endif
297
298 #define ICE_EXIT_CODE 4
299
300 #ifdef HAVE_UNISTD_H
301 # include <unistd.h>
302 #endif
303
304 #ifdef HAVE_SYS_PARAM_H
305 # include <sys/param.h>
306 /* We use these identifiers later and they appear in some vendor param.h's. */
307 # undef PREFETCH
308 # undef m_slot
309 #endif
310
311 #if HAVE_LIMITS_H
312 # include <limits.h>
313 #endif
314
315 /* A macro to determine whether a VALUE lies inclusively within a
316 certain range without evaluating the VALUE more than once. This
317 macro won't warn if the VALUE is unsigned and the LOWER bound is
318 zero, as it would e.g. with "VALUE >= 0 && ...". Note the LOWER
319 bound *is* evaluated twice, and LOWER must not be greater than
320 UPPER. However the bounds themselves can be either positive or
321 negative. */
322 #define IN_RANGE(VALUE, LOWER, UPPER) \
323 ((unsigned HOST_WIDE_INT) (VALUE) - (unsigned HOST_WIDE_INT) (LOWER) \
324 <= (unsigned HOST_WIDE_INT) (UPPER) - (unsigned HOST_WIDE_INT) (LOWER))
325
326 /* Infrastructure for defining missing _MAX and _MIN macros. Note that
327 macros defined with these cannot be used in #if. */
328
329 /* The extra casts work around common compiler bugs. */
330 #define INTTYPE_SIGNED(t) (! ((t) 0 < (t) -1))
331 /* The outer cast is needed to work around a bug in Cray C 5.0.3.0.
332 It is necessary at least when t == time_t. */
333 #define INTTYPE_MINIMUM(t) ((t) (INTTYPE_SIGNED (t) \
334 ? (t) 1 << (sizeof (t) * CHAR_BIT - 1) : (t) 0))
335 #define INTTYPE_MAXIMUM(t) ((t) (~ (t) 0 - INTTYPE_MINIMUM (t)))
336
337 /* Use that infrastructure to provide a few constants. */
338 #ifndef UCHAR_MAX
339 # define UCHAR_MAX INTTYPE_MAXIMUM (unsigned char)
340 #endif
341
342 #ifdef TIME_WITH_SYS_TIME
343 # include <sys/time.h>
344 # include <time.h>
345 #else
346 # if HAVE_SYS_TIME_H
347 # include <sys/time.h>
348 # else
349 # ifdef HAVE_TIME_H
350 # include <time.h>
351 # endif
352 # endif
353 #endif
354
355 #ifdef HAVE_FCNTL_H
356 # include <fcntl.h>
357 #else
358 # ifdef HAVE_SYS_FILE_H
359 # include <sys/file.h>
360 # endif
361 #endif
362
363 #ifdef HAVE_SYS_LOCKING_H
364 # include <sys/locking.h>
365 #endif
366
367 #ifndef SEEK_SET
368 # define SEEK_SET 0
369 # define SEEK_CUR 1
370 # define SEEK_END 2
371 #endif
372 #ifndef F_OK
373 # define F_OK 0
374 # define X_OK 1
375 # define W_OK 2
376 # define R_OK 4
377 #endif
378 #ifndef O_RDONLY
379 # define O_RDONLY 0
380 #endif
381 #ifndef O_WRONLY
382 # define O_WRONLY 1
383 #endif
384 #ifndef O_BINARY
385 # define O_BINARY 0
386 #endif
387
388 /* Some systems define these in, e.g., param.h. We undefine these names
389 here to avoid the warnings. We prefer to use our definitions since we
390 know they are correct. */
391
392 #undef MIN
393 #undef MAX
394 #define MIN(X,Y) ((X) < (Y) ? (X) : (Y))
395 #define MAX(X,Y) ((X) > (Y) ? (X) : (Y))
396
397 /* Returns the least number N such that N * Y >= X. */
398 #define CEIL(x,y) (((x) + (y) - 1) / (y))
399
400 /* This macro rounds x up to the y boundary. */
401 #define ROUND_UP(x,y) (((x) + (y) - 1) & ~((y) - 1))
402
403 /* This macro rounds x down to the y boundary. */
404 #define ROUND_DOWN(x,y) ((x) & ~((y) - 1))
405
406 #ifdef HAVE_SYS_WAIT_H
407 #include <sys/wait.h>
408 #endif
409
410 #ifndef WIFSIGNALED
411 #define WIFSIGNALED(S) (((S) & 0xff) != 0 && ((S) & 0xff) != 0x7f)
412 #endif
413 #ifndef WTERMSIG
414 #define WTERMSIG(S) ((S) & 0x7f)
415 #endif
416 #ifndef WIFEXITED
417 #define WIFEXITED(S) (((S) & 0xff) == 0)
418 #endif
419 #ifndef WEXITSTATUS
420 #define WEXITSTATUS(S) (((S) & 0xff00) >> 8)
421 #endif
422 #ifndef WSTOPSIG
423 #define WSTOPSIG WEXITSTATUS
424 #endif
425 #ifndef WCOREDUMP
426 #define WCOREDUMP(S) ((S) & WCOREFLG)
427 #endif
428 #ifndef WCOREFLG
429 #define WCOREFLG 0200
430 #endif
431
432 #include <signal.h>
433 #if !defined (SIGCHLD) && defined (SIGCLD)
434 # define SIGCHLD SIGCLD
435 #endif
436
437 #ifdef HAVE_SYS_MMAN_H
438 # include <sys/mman.h>
439 #endif
440
441 #ifndef MAP_FAILED
442 # define MAP_FAILED ((void *)-1)
443 #endif
444
445 #if !defined (MAP_ANONYMOUS) && defined (MAP_ANON)
446 # define MAP_ANONYMOUS MAP_ANON
447 #endif
448
449 #ifdef HAVE_SYS_RESOURCE_H
450 # include <sys/resource.h>
451 #endif
452
453 #ifdef HAVE_SYS_TIMES_H
454 # include <sys/times.h>
455 #endif
456
457 /* The HAVE_DECL_* macros are three-state, undefined, 0 or 1. If they
458 are defined to 0 then we must provide the relevant declaration
459 here. These checks will be in the undefined state while configure
460 is running so be careful to test "defined (HAVE_DECL_*)". */
461
462 #ifdef __cplusplus
463 extern "C" {
464 #endif
465
466 #if defined (HAVE_DECL_ATOF) && !HAVE_DECL_ATOF
467 extern double atof (const char *);
468 #endif
469
470 #if defined (HAVE_DECL_ATOL) && !HAVE_DECL_ATOL
471 extern long atol (const char *);
472 #endif
473
474 #if defined (HAVE_DECL_FREE) && !HAVE_DECL_FREE
475 extern void free (void *);
476 #endif
477
478 #if defined (HAVE_DECL_GETCWD) && !HAVE_DECL_GETCWD
479 extern char *getcwd (char *, size_t);
480 #endif
481
482 #if defined (HAVE_DECL_GETENV) && !HAVE_DECL_GETENV
483 extern char *getenv (const char *);
484 #endif
485
486 #if defined (HAVE_DECL_GETOPT) && !HAVE_DECL_GETOPT
487 extern int getopt (int, char * const *, const char *);
488 #endif
489
490 #if defined (HAVE_DECL_GETPAGESIZE) && !HAVE_DECL_GETPAGESIZE
491 extern int getpagesize (void);
492 #endif
493
494 #if defined (HAVE_DECL_GETWD) && !HAVE_DECL_GETWD
495 extern char *getwd (char *);
496 #endif
497
498 #if defined (HAVE_DECL_SBRK) && !HAVE_DECL_SBRK
499 extern void *sbrk (int);
500 #endif
501
502 #if defined (HAVE_DECL_SETENV) && !HAVE_DECL_SETENV
503 int setenv(const char *, const char *, int);
504 #endif
505
506 #if defined (HAVE_DECL_STRSTR) && !HAVE_DECL_STRSTR
507 extern char *strstr (const char *, const char *);
508 #endif
509
510 #if defined (HAVE_DECL_STPCPY) && !HAVE_DECL_STPCPY
511 extern char *stpcpy (char *, const char *);
512 #endif
513
514 #if defined (HAVE_DECL_UNSETENV) && !HAVE_DECL_UNSETENV
515 int unsetenv(const char *);
516 #endif
517
518 #if defined (HAVE_DECL_MALLOC) && !HAVE_DECL_MALLOC
519 extern void *malloc (size_t);
520 #endif
521
522 #if defined (HAVE_DECL_CALLOC) && !HAVE_DECL_CALLOC
523 extern void *calloc (size_t, size_t);
524 #endif
525
526 #if defined (HAVE_DECL_REALLOC) && !HAVE_DECL_REALLOC
527 extern void *realloc (void *, size_t);
528 #endif
529
530 #ifdef __cplusplus
531 }
532 #endif
533
534 #ifdef HAVE_STDINT_H
535 #include <stdint.h>
536 #endif
537
538 #ifdef HAVE_INTTYPES_H
539 #include <inttypes.h>
540 #endif
541
542 #ifndef SIZE_MAX
543 # define SIZE_MAX INTTYPE_MAXIMUM (size_t)
544 #endif
545
546 #ifdef __cplusplus
547 extern "C" {
548 #endif
549
550 /* If the system doesn't provide strsignal, we get it defined in
551 libiberty but no declaration is supplied. */
552 #if !defined (HAVE_STRSIGNAL) \
553 || (defined (HAVE_DECL_STRSIGNAL) && !HAVE_DECL_STRSIGNAL)
554 # ifndef strsignal
555 extern const char *strsignal (int);
556 # endif
557 #endif
558
559 #ifdef HAVE_GETRLIMIT
560 # if defined (HAVE_DECL_GETRLIMIT) && !HAVE_DECL_GETRLIMIT
561 # ifndef getrlimit
562 struct rlimit;
563 extern int getrlimit (int, struct rlimit *);
564 # endif
565 # endif
566 #endif
567
568 #ifdef HAVE_SETRLIMIT
569 # if defined (HAVE_DECL_SETRLIMIT) && !HAVE_DECL_SETRLIMIT
570 # ifndef setrlimit
571 struct rlimit;
572 extern int setrlimit (int, const struct rlimit *);
573 # endif
574 # endif
575 #endif
576
577 #if defined (HAVE_DECL_ABORT) && !HAVE_DECL_ABORT
578 extern void abort (void);
579 #endif
580
581 #if defined (HAVE_DECL_SNPRINTF) && !HAVE_DECL_SNPRINTF
582 extern int snprintf (char *, size_t, const char *, ...);
583 #endif
584
585 #if defined (HAVE_DECL_VSNPRINTF) && !HAVE_DECL_VSNPRINTF
586 extern int vsnprintf (char *, size_t, const char *, va_list);
587 #endif
588
589 #ifdef __cplusplus
590 }
591 #endif
592
593 /* 1 if we have C99 designated initializers. */
594 #if !defined(HAVE_DESIGNATED_INITIALIZERS)
595 #ifdef __cplusplus
596 #define HAVE_DESIGNATED_INITIALIZERS 0
597 #else
598 #define HAVE_DESIGNATED_INITIALIZERS \
599 ((GCC_VERSION >= 2007) || (__STDC_VERSION__ >= 199901L))
600 #endif
601 #endif
602
603 #if !defined(HAVE_DESIGNATED_UNION_INITIALIZERS)
604 #ifdef __cplusplus
605 #define HAVE_DESIGNATED_UNION_INITIALIZERS (GCC_VERSION >= 4007)
606 #else
607 #define HAVE_DESIGNATED_UNION_INITIALIZERS \
608 ((GCC_VERSION >= 2007) || (__STDC_VERSION__ >= 199901L))
609 #endif
610 #endif
611
612 #if HAVE_SYS_STAT_H
613 # include <sys/stat.h>
614 #endif
615
616 /* Test if something is a normal file. */
617 #ifndef S_ISREG
618 #define S_ISREG(m) (((m) & S_IFMT) == S_IFREG)
619 #endif
620
621 /* Test if something is a directory. */
622 #ifndef S_ISDIR
623 #define S_ISDIR(m) (((m) & S_IFMT) == S_IFDIR)
624 #endif
625
626 /* Test if something is a character special file. */
627 #ifndef S_ISCHR
628 #define S_ISCHR(m) (((m) & S_IFMT) == S_IFCHR)
629 #endif
630
631 /* Test if something is a block special file. */
632 #ifndef S_ISBLK
633 #define S_ISBLK(m) (((m) & S_IFMT) == S_IFBLK)
634 #endif
635
636 /* Test if something is a socket. */
637 #ifndef S_ISSOCK
638 # ifdef S_IFSOCK
639 # define S_ISSOCK(m) (((m) & S_IFMT) == S_IFSOCK)
640 # else
641 # define S_ISSOCK(m) 0
642 # endif
643 #endif
644
645 /* Test if something is a FIFO. */
646 #ifndef S_ISFIFO
647 # ifdef S_IFIFO
648 # define S_ISFIFO(m) (((m) & S_IFMT) == S_IFIFO)
649 # else
650 # define S_ISFIFO(m) 0
651 # endif
652 #endif
653
654 /* Define well known filenos if the system does not define them. */
655 #ifndef STDIN_FILENO
656 # define STDIN_FILENO 0
657 #endif
658 #ifndef STDOUT_FILENO
659 # define STDOUT_FILENO 1
660 #endif
661 #ifndef STDERR_FILENO
662 # define STDERR_FILENO 2
663 #endif
664
665 /* Some systems have mkdir that takes a single argument. */
666 #ifdef MKDIR_TAKES_ONE_ARG
667 # define mkdir(a,b) mkdir (a)
668 #endif
669
670 #ifndef HAVE_KILL
671 # define kill(p,s) raise (s)
672 #endif
673
674 /* Provide a way to print an address via printf. */
675 #ifndef HOST_PTR_PRINTF
676 #define HOST_PTR_PRINTF "%p"
677 #endif /* ! HOST_PTR_PRINTF */
678
679 /* By default, colon separates directories in a path. */
680 #ifndef PATH_SEPARATOR
681 #define PATH_SEPARATOR ':'
682 #endif
683
684 /* Filename handling macros. */
685 #include "filenames.h"
686
687 /* These should be phased out in favor of IS_DIR_SEPARATOR, where possible. */
688 #ifndef DIR_SEPARATOR
689 # define DIR_SEPARATOR '/'
690 # ifdef HAVE_DOS_BASED_FILE_SYSTEM
691 # define DIR_SEPARATOR_2 '\\'
692 # endif
693 #endif
694
695 #if defined (ENABLE_PLUGIN) && defined (HAVE_DLFCN_H)
696 /* If plugin support is enabled, we could use libdl. */
697 #include <dlfcn.h>
698 #endif
699
700 /* Do not introduce a gmp.h dependency on the build system. */
701 #ifndef GENERATOR_FILE
702 #include <gmp.h>
703 #endif
704
705 /* Get libiberty declarations. */
706 #include "libiberty.h"
707
708 #undef FFS /* Some systems predefine this symbol; don't let it interfere. */
709 #undef FLOAT /* Likewise. */
710 #undef ABS /* Likewise. */
711 #undef PC /* Likewise. */
712
713 /* Provide a default for the HOST_BIT_BUCKET.
714 This suffices for POSIX-like hosts. */
715
716 #ifndef HOST_BIT_BUCKET
717 #define HOST_BIT_BUCKET "/dev/null"
718 #endif
719
720 #ifndef offsetof
721 #define offsetof(TYPE, MEMBER) ((size_t) &((TYPE *) 0)->MEMBER)
722 #endif
723
724 /* Various error reporting routines want to use __FUNCTION__. */
725 #if (GCC_VERSION < 2007)
726 #ifndef __FUNCTION__
727 #define __FUNCTION__ "?"
728 #endif /* ! __FUNCTION__ */
729 #endif
730
731 /* __builtin_expect(A, B) evaluates to A, but notifies the compiler that
732 the most likely value of A is B. This feature was added at some point
733 between 2.95 and 3.0. Let's use 3.0 as the lower bound for now. */
734 #if (GCC_VERSION < 3000)
735 #define __builtin_expect(a, b) (a)
736 #endif
737
738 /* Some of the headers included by <memory> can use "abort" within a
739 namespace, e.g. "_VSTD::abort();", which fails after we use the
740 preprocessor to redefine "abort" as "fancy_abort" below.
741 Given that unique-ptr.h can use "free", we need to do this after "free"
742 is declared but before "abort" is overridden. */
743
744 #ifdef INCLUDE_UNIQUE_PTR
745 # include "unique-ptr.h"
746 #endif
747
748 #ifdef INCLUDE_MALLOC_H
749 #if defined(HAVE_MALLINFO) || defined(HAVE_MALLINFO2)
750 #include <malloc.h>
751 #endif
752 #endif
753
754 #ifdef INCLUDE_ISL
755 #ifdef HAVE_isl
756 #include <isl/options.h>
757 #include <isl/ctx.h>
758 #include <isl/val.h>
759 #include <isl/set.h>
760 #include <isl/union_set.h>
761 #include <isl/map.h>
762 #include <isl/union_map.h>
763 #include <isl/aff.h>
764 #include <isl/constraint.h>
765 #include <isl/flow.h>
766 #include <isl/ilp.h>
767 #include <isl/schedule.h>
768 #include <isl/ast_build.h>
769 #include <isl/schedule_node.h>
770 #include <isl/id.h>
771 #include <isl/space.h>
772 #endif
773 #endif
774
775 /* Redefine abort to report an internal error w/o coredump, and
776 reporting the location of the error in the source file. */
777 extern void fancy_abort (const char *, int, const char *)
778 ATTRIBUTE_NORETURN ATTRIBUTE_COLD;
779 #define abort() fancy_abort (__FILE__, __LINE__, __FUNCTION__)
780
781 /* Use gcc_assert(EXPR) to test invariants. */
782 #if ENABLE_ASSERT_CHECKING
783 #define gcc_assert(EXPR) \
784 ((void)(!(EXPR) ? fancy_abort (__FILE__, __LINE__, __FUNCTION__), 0 : 0))
785 #elif (GCC_VERSION >= 4005)
786 #define gcc_assert(EXPR) \
787 ((void)(__builtin_expect (!(EXPR), 0) ? __builtin_unreachable (), 0 : 0))
788 #else
789 /* Include EXPR, so that unused variable warnings do not occur. */
790 #define gcc_assert(EXPR) ((void)(0 && (EXPR)))
791 #endif
792
793 #if CHECKING_P
794 #define gcc_checking_assert(EXPR) gcc_assert (EXPR)
795 #else
796 /* N.B.: in release build EXPR is not evaluated. */
797 #define gcc_checking_assert(EXPR) ((void)(0 && (EXPR)))
798 #endif
799
800 #if GCC_VERSION >= 4000
801 #define ALWAYS_INLINE inline __attribute__ ((always_inline))
802 #else
803 #define ALWAYS_INLINE inline
804 #endif
805
806 #if GCC_VERSION >= 3004
807 #define WARN_UNUSED_RESULT __attribute__ ((__warn_unused_result__))
808 #else
809 #define WARN_UNUSED_RESULT
810 #endif
811
812 /* Use gcc_unreachable() to mark unreachable locations (like an
813 unreachable default case of a switch. Do not use gcc_assert(0). */
814 #if (GCC_VERSION >= 4005) && !ENABLE_ASSERT_CHECKING
815 #define gcc_unreachable() __builtin_unreachable ()
816 #else
817 #define gcc_unreachable() (fancy_abort (__FILE__, __LINE__, __FUNCTION__))
818 #endif
819
820 #if GCC_VERSION >= 7000 && defined(__has_attribute)
821 # if __has_attribute(fallthrough)
822 # define gcc_fallthrough() __attribute__((fallthrough))
823 # else
824 # define gcc_fallthrough()
825 # endif
826 #else
827 # define gcc_fallthrough()
828 #endif
829
830 #if GCC_VERSION >= 3001
831 #define STATIC_CONSTANT_P(X) (__builtin_constant_p (X) && (X))
832 #else
833 #define STATIC_CONSTANT_P(X) (false && (X))
834 #endif
835
836 /* static_assert (COND, MESSAGE) is available in C++11 onwards. */
837 #if __cplusplus >= 201103L
838 #define STATIC_ASSERT(X) \
839 static_assert ((X), #X)
840 #else
841 #define STATIC_ASSERT(X) \
842 typedef int assertion1[(X) ? 1 : -1] ATTRIBUTE_UNUSED
843 #endif
844
845 /* Provide a fake boolean type. We make no attempt to use the
846 C99 _Bool, as it may not be available in the bootstrap compiler,
847 and even if it is, it is liable to be buggy.
848 This must be after all inclusion of system headers, as some of
849 them will mess us up. */
850
851 #undef TRUE
852 #undef FALSE
853
854 #ifdef __cplusplus
855 /* Obsolete. */
856 # define TRUE true
857 # define FALSE false
858 #else /* !__cplusplus */
859 # undef bool
860 # undef true
861 # undef false
862
863 # define bool unsigned char
864 # define true 1
865 # define false 0
866
867 /* Obsolete. */
868 # define TRUE true
869 # define FALSE false
870 #endif /* !__cplusplus */
871
872 /* Some compilers do not allow the use of unsigned char in bitfields. */
873 #define BOOL_BITFIELD unsigned int
874
875 /* GCC older than 4.4 have broken C++ value initialization handling, see
876 PR11309, PR30111, PR33916, PR82939 and PR84405 for more details. */
877 #if GCC_VERSION > 0 && GCC_VERSION < 4004 && !defined(__clang__)
878 # define BROKEN_VALUE_INITIALIZATION
879 #endif
880
881 /* As the last action in this file, we poison the identifiers that
882 shouldn't be used. Note, luckily gcc-3.0's token-based integrated
883 preprocessor won't trip on poisoned identifiers that arrive from
884 the expansion of macros. E.g. #define strrchr rindex, won't error
885 if rindex is poisoned after this directive is issued and later on
886 strrchr is called.
887
888 Note: We define bypass macros for the few cases where we really
889 want to use the libc memory allocation routines. Otherwise we
890 insist you use the "x" versions from libiberty. */
891
892 #define really_call_malloc malloc
893 #define really_call_calloc calloc
894 #define really_call_realloc realloc
895
896 #if defined(FLEX_SCANNER) || defined(YYBISON) || defined(YYBYACC)
897 /* Flex and bison use malloc and realloc. Yuk. Note that this means
898 really_call_* cannot be used in a .l or .y file. */
899 #define malloc xmalloc
900 #define realloc xrealloc
901 #endif
902
903 #if (GCC_VERSION >= 3000)
904
905 /* Note autoconf checks for prototype declarations and includes
906 system.h while doing so. Only poison these tokens if actually
907 compiling gcc, so that the autoconf declaration tests for malloc
908 etc don't spuriously fail. */
909 #ifdef IN_GCC
910
911 #undef calloc
912 #undef strdup
913 #undef strndup
914 #pragma GCC poison calloc strdup strndup
915
916 #if !defined(FLEX_SCANNER) && !defined(YYBISON)
917 #undef malloc
918 #undef realloc
919 #pragma GCC poison malloc realloc
920 #endif
921
922 /* The %m format should be used when GCC's main diagnostic functions
923 supporting %m are available, and xstrerror from libiberty
924 otherwise. */
925 #undef strerror
926 #pragma GCC poison strerror
927
928 /* loc_t is defined on some systems and too inviting for some
929 programmers to avoid. */
930 #undef loc_t
931 #pragma GCC poison loc_t
932
933 /* Old target macros that have moved to the target hooks structure. */
934 #pragma GCC poison ASM_OPEN_PAREN ASM_CLOSE_PAREN \
935 FUNCTION_PROLOGUE FUNCTION_EPILOGUE \
936 FUNCTION_END_PROLOGUE FUNCTION_BEGIN_EPILOGUE \
937 DECL_MACHINE_ATTRIBUTES COMP_TYPE_ATTRIBUTES INSERT_ATTRIBUTES \
938 VALID_MACHINE_DECL_ATTRIBUTE VALID_MACHINE_TYPE_ATTRIBUTE \
939 SET_DEFAULT_TYPE_ATTRIBUTES SET_DEFAULT_DECL_ATTRIBUTES \
940 MERGE_MACHINE_TYPE_ATTRIBUTES MERGE_MACHINE_DECL_ATTRIBUTES \
941 MD_INIT_BUILTINS MD_EXPAND_BUILTIN ASM_OUTPUT_CONSTRUCTOR \
942 ASM_OUTPUT_DESTRUCTOR SIGNED_CHAR_SPEC MAX_CHAR_TYPE_SIZE \
943 WCHAR_UNSIGNED UNIQUE_SECTION SELECT_SECTION SELECT_RTX_SECTION \
944 ENCODE_SECTION_INFO STRIP_NAME_ENCODING ASM_GLOBALIZE_LABEL \
945 ASM_OUTPUT_MI_THUNK CONST_COSTS RTX_COSTS DEFAULT_RTX_COSTS \
946 ADDRESS_COST MACHINE_DEPENDENT_REORG ASM_FILE_START ASM_FILE_END \
947 ASM_SIMPLIFY_DWARF_ADDR INIT_TARGET_OPTABS INIT_SUBTARGET_OPTABS \
948 INIT_GOFAST_OPTABS MULSI3_LIBCALL MULDI3_LIBCALL DIVSI3_LIBCALL \
949 DIVDI3_LIBCALL UDIVSI3_LIBCALL UDIVDI3_LIBCALL MODSI3_LIBCALL \
950 MODDI3_LIBCALL UMODSI3_LIBCALL UMODDI3_LIBCALL BUILD_VA_LIST_TYPE \
951 PRETEND_OUTGOING_VARARGS_NAMED STRUCT_VALUE_INCOMING_REGNUM \
952 ASM_OUTPUT_SECTION_NAME PROMOTE_FUNCTION_ARGS PROMOTE_FUNCTION_MODE \
953 STRUCT_VALUE_INCOMING STRICT_ARGUMENT_NAMING \
954 PROMOTE_FUNCTION_RETURN PROMOTE_PROTOTYPES STRUCT_VALUE_REGNUM \
955 SETUP_INCOMING_VARARGS EXPAND_BUILTIN_SAVEREGS \
956 DEFAULT_SHORT_ENUMS SPLIT_COMPLEX_ARGS MD_ASM_CLOBBERS \
957 HANDLE_PRAGMA_REDEFINE_EXTNAME HANDLE_PRAGMA_EXTERN_PREFIX \
958 MUST_PASS_IN_STACK FUNCTION_ARG_PASS_BY_REFERENCE \
959 VECTOR_MODE_SUPPORTED_P TARGET_SUPPORTS_HIDDEN \
960 FUNCTION_ARG_PARTIAL_NREGS ASM_OUTPUT_DWARF_DTPREL \
961 ALLOCATE_INITIAL_VALUE LEGITIMIZE_ADDRESS FRAME_POINTER_REQUIRED \
962 CAN_ELIMINATE TRAMPOLINE_TEMPLATE INITIALIZE_TRAMPOLINE \
963 TRAMPOLINE_ADJUST_ADDRESS STATIC_CHAIN STATIC_CHAIN_INCOMING \
964 RETURN_POPS_ARGS UNITS_PER_SIMD_WORD OVERRIDE_OPTIONS \
965 OPTIMIZATION_OPTIONS CLASS_LIKELY_SPILLED_P \
966 USING_SJLJ_EXCEPTIONS TARGET_UNWIND_INFO \
967 CAN_DEBUG_WITHOUT_FP UNLIKELY_EXECUTED_TEXT_SECTION_NAME \
968 HOT_TEXT_SECTION_NAME LEGITIMATE_CONSTANT_P ALWAYS_STRIP_DOTDOT \
969 OUTPUT_ADDR_CONST_EXTRA SMALL_REGISTER_CLASSES ASM_OUTPUT_IDENT \
970 ASM_BYTE_OP MEMBER_TYPE_FORCES_BLK LIBGCC2_HAS_SF_MODE \
971 LIBGCC2_HAS_DF_MODE LIBGCC2_HAS_XF_MODE LIBGCC2_HAS_TF_MODE \
972 CLEAR_BY_PIECES_P MOVE_BY_PIECES_P SET_BY_PIECES_P \
973 STORE_BY_PIECES_P TARGET_FLT_EVAL_METHOD \
974 HARD_REGNO_CALL_PART_CLOBBERED HARD_REGNO_MODE_OK \
975 MODES_TIEABLE_P FUNCTION_ARG_PADDING SLOW_UNALIGNED_ACCESS \
976 HARD_REGNO_NREGS SECONDARY_MEMORY_NEEDED_MODE \
977 SECONDARY_MEMORY_NEEDED CANNOT_CHANGE_MODE_CLASS \
978 TRULY_NOOP_TRUNCATION FUNCTION_ARG_OFFSET CONSTANT_ALIGNMENT \
979 STARTING_FRAME_OFFSET
980
981 /* Target macros only used for code built for the target, that have
982 moved to libgcc-tm.h or have never been present elsewhere. */
983 #pragma GCC poison DECLARE_LIBRARY_RENAMES LIBGCC2_GNU_PREFIX \
984 MD_UNWIND_SUPPORT MD_FROB_UPDATE_CONTEXT ENABLE_EXECUTE_STACK \
985 REG_VALUE_IN_UNWIND_CONTEXT ASSUME_EXTENDED_UNWIND_CONTEXT
986
987 /* Other obsolete target macros, or macros that used to be in target
988 headers and were not used, and may be obsolete or may never have
989 been used. */
990 #pragma GCC poison INT_ASM_OP ASM_OUTPUT_EH_REGION_BEG CPP_PREDEFINES \
991 ASM_OUTPUT_EH_REGION_END ASM_OUTPUT_LABELREF_AS_INT SMALL_STACK \
992 DOESNT_NEED_UNWINDER EH_TABLE_LOOKUP OBJC_SELECTORS_WITHOUT_LABELS \
993 OMIT_EH_TABLE EASY_DIV_EXPR IMPLICIT_FIX_EXPR \
994 LONGJMP_RESTORE_FROM_STACK MAX_INT_TYPE_SIZE ASM_IDENTIFY_GCC \
995 STDC_VALUE TRAMPOLINE_ALIGN ASM_IDENTIFY_GCC_AFTER_SOURCE \
996 SLOW_ZERO_EXTEND SUBREG_REGNO_OFFSET DWARF_LINE_MIN_INSTR_LENGTH \
997 TRADITIONAL_RETURN_FLOAT NO_BUILTIN_SIZE_TYPE \
998 NO_BUILTIN_PTRDIFF_TYPE NO_BUILTIN_WCHAR_TYPE NO_BUILTIN_WINT_TYPE \
999 BLOCK_PROFILER BLOCK_PROFILER_CODE FUNCTION_BLOCK_PROFILER \
1000 FUNCTION_BLOCK_PROFILER_EXIT MACHINE_STATE_SAVE \
1001 MACHINE_STATE_RESTORE SCCS_DIRECTIVE SECTION_ASM_OP BYTEORDER \
1002 ASM_OUTPUT_DEFINE_LABEL_DIFFERENCE_SYMBOL HOST_WORDS_BIG_ENDIAN \
1003 OBJC_PROLOGUE ALLOCATE_TRAMPOLINE HANDLE_PRAGMA ROUND_TYPE_SIZE \
1004 ROUND_TYPE_SIZE_UNIT CONST_SECTION_ASM_OP CRT_GET_RFIB_TEXT \
1005 DBX_LBRAC_FIRST DBX_OUTPUT_ENUM DBX_OUTPUT_SOURCE_FILENAME \
1006 DBX_WORKING_DIRECTORY INSN_CACHE_DEPTH INSN_CACHE_SIZE \
1007 INSN_CACHE_LINE_WIDTH INIT_SECTION_PREAMBLE NEED_ATEXIT ON_EXIT \
1008 EXIT_BODY OBJECT_FORMAT_ROSE MULTIBYTE_CHARS MAP_CHARACTER \
1009 LIBGCC_NEEDS_DOUBLE FINAL_PRESCAN_LABEL DEFAULT_CALLER_SAVES \
1010 LOAD_ARGS_REVERSED MAX_INTEGER_COMPUTATION_MODE \
1011 CONVERT_HARD_REGISTER_TO_SSA_P ASM_OUTPUT_MAIN_SOURCE_FILENAME \
1012 FIRST_INSN_ADDRESS TEXT_SECTION SHARED_BSS_SECTION_ASM_OP \
1013 PROMOTED_MODE EXPAND_BUILTIN_VA_END \
1014 LINKER_DOES_NOT_WORK_WITH_DWARF2 FUNCTION_ARG_KEEP_AS_REFERENCE \
1015 GIV_SORT_CRITERION MAX_LONG_TYPE_SIZE MAX_LONG_DOUBLE_TYPE_SIZE \
1016 MAX_WCHAR_TYPE_SIZE SHARED_SECTION_ASM_OP INTEGRATE_THRESHOLD \
1017 FINAL_REG_PARM_STACK_SPACE MAYBE_REG_PARM_STACK_SPACE \
1018 TRADITIONAL_PIPELINE_INTERFACE DFA_PIPELINE_INTERFACE \
1019 DBX_OUTPUT_STANDARD_TYPES BUILTIN_SETJMP_FRAME_VALUE \
1020 SUNOS4_SHARED_LIBRARIES PROMOTE_FOR_CALL_ONLY \
1021 SPACE_AFTER_L_OPTION NO_RECURSIVE_FUNCTION_CSE \
1022 DEFAULT_MAIN_RETURN TARGET_MEM_FUNCTIONS EXPAND_BUILTIN_VA_ARG \
1023 COLLECT_PARSE_FLAG DWARF2_GENERATE_TEXT_SECTION_LABEL WINNING_GDB \
1024 ASM_OUTPUT_FILENAME ASM_OUTPUT_SOURCE_LINE FILE_NAME_JOINER \
1025 GDB_INV_REF_REGPARM_STABS_LETTER DBX_MEMPARM_STABS_LETTER \
1026 PUT_SDB_SRC_FILE STABS_GCC_MARKER DBX_OUTPUT_FUNCTION_END \
1027 DBX_OUTPUT_GCC_MARKER DBX_FINISH_SYMBOL SDB_GENERATE_FAKE \
1028 NON_SAVING_SETJMP TARGET_LATE_RTL_PROLOGUE_EPILOGUE \
1029 CASE_DROPS_THROUGH TARGET_BELL TARGET_BS TARGET_CR TARGET_DIGIT0 \
1030 TARGET_ESC TARGET_FF TARGET_NEWLINE TARGET_TAB TARGET_VT \
1031 LINK_LIBGCC_SPECIAL DONT_ACCESS_GBLS_AFTER_EPILOGUE \
1032 TARGET_OPTIONS TARGET_SWITCHES EXTRA_CC_MODES FINALIZE_PIC \
1033 PREDICATE_CODES SPECIAL_MODE_PREDICATES UNALIGNED_WORD_ASM_OP \
1034 EXTRA_SECTIONS EXTRA_SECTION_FUNCTIONS READONLY_DATA_SECTION \
1035 TARGET_ASM_EXCEPTION_SECTION TARGET_ASM_EH_FRAME_SECTION \
1036 SMALL_ARG_MAX ASM_OUTPUT_SHARED_BSS ASM_OUTPUT_SHARED_COMMON \
1037 ASM_OUTPUT_SHARED_LOCAL ASM_MAKE_LABEL_LINKONCE \
1038 STACK_CHECK_PROBE_INTERVAL STACK_CHECK_PROBE_LOAD \
1039 ORDER_REGS_FOR_LOCAL_ALLOC FUNCTION_OUTGOING_VALUE \
1040 ASM_DECLARE_CONSTANT_NAME MODIFY_TARGET_NAME SWITCHES_NEED_SPACES \
1041 SWITCH_CURTAILS_COMPILATION SWITCH_TAKES_ARG WORD_SWITCH_TAKES_ARG \
1042 TARGET_OPTION_TRANSLATE_TABLE HANDLE_PRAGMA_PACK_PUSH_POP \
1043 HANDLE_SYSV_PRAGMA HANDLE_PRAGMA_WEAK CONDITIONAL_REGISTER_USAGE \
1044 FUNCTION_ARG_BOUNDARY MUST_USE_SJLJ_EXCEPTIONS US_SOFTWARE_GOFAST \
1045 USING_SVR4_H SVR4_ASM_SPEC FUNCTION_ARG FUNCTION_ARG_ADVANCE \
1046 FUNCTION_INCOMING_ARG IRA_COVER_CLASSES TARGET_VERSION \
1047 MACHINE_TYPE TARGET_HAS_TARGETCM ASM_OUTPUT_BSS \
1048 SETJMP_VIA_SAVE_AREA FORBIDDEN_INC_DEC_CLASSES \
1049 PREFERRED_OUTPUT_RELOAD_CLASS SYSTEM_INCLUDE_DIR \
1050 STANDARD_INCLUDE_DIR STANDARD_INCLUDE_COMPONENT \
1051 LINK_ELIMINATE_DUPLICATE_LDIRECTORIES MIPS_DEBUGGING_INFO \
1052 IDENT_ASM_OP ALL_COP_ADDITIONAL_REGISTER_NAMES DBX_OUTPUT_LBRAC \
1053 DBX_OUTPUT_NFUN DBX_OUTPUT_RBRAC RANGE_TEST_NON_SHORT_CIRCUIT \
1054 REAL_VALUE_TRUNCATE REVERSE_CONDEXEC_PREDICATES_P \
1055 TARGET_ALIGN_ANON_BITFIELDS TARGET_NARROW_VOLATILE_BITFIELDS \
1056 IDENT_ASM_OP UNALIGNED_SHORT_ASM_OP UNALIGNED_INT_ASM_OP \
1057 UNALIGNED_LONG_ASM_OP UNALIGNED_DOUBLE_INT_ASM_OP \
1058 USE_COMMON_FOR_ONE_ONLY IFCVT_EXTRA_FIELDS IFCVT_INIT_EXTRA_FIELDS \
1059 CASE_USE_BIT_TESTS FIXUNS_TRUNC_LIKE_FIX_TRUNC \
1060 GO_IF_MODE_DEPENDENT_ADDRESS DELAY_SLOTS_FOR_EPILOGUE \
1061 ELIGIBLE_FOR_EPILOGUE_DELAY TARGET_C99_FUNCTIONS TARGET_HAS_SINCOS \
1062 REG_CLASS_FROM_LETTER CONST_OK_FOR_LETTER_P \
1063 CONST_DOUBLE_OK_FOR_LETTER_P EXTRA_CONSTRAINT \
1064 REG_CLASS_FROM_CONSTRAINT REG_CLASS_FOR_CONSTRAINT \
1065 EXTRA_CONSTRAINT_STR EXTRA_MEMORY_CONSTRAINT \
1066 EXTRA_ADDRESS_CONSTRAINT CONST_DOUBLE_OK_FOR_CONSTRAINT_P \
1067 CALLER_SAVE_PROFITABLE LARGEST_EXPONENT_IS_NORMAL \
1068 ROUND_TOWARDS_ZERO SF_SIZE DF_SIZE XF_SIZE TF_SIZE LIBGCC2_TF_CEXT \
1069 LIBGCC2_LONG_DOUBLE_TYPE_SIZE STRUCT_VALUE \
1070 EH_FRAME_IN_DATA_SECTION TARGET_FLT_EVAL_METHOD_NON_DEFAULT \
1071 JCR_SECTION_NAME TARGET_USE_JCR_SECTION SDB_DEBUGGING_INFO \
1072 SDB_DEBUG NO_IMPLICIT_EXTERN_C NOTICE_UPDATE_CC \
1073 CC_STATUS_MDEP_INIT CC_STATUS_MDEP CC_STATUS
1074
1075 /* Hooks that are no longer used. */
1076 #pragma GCC poison LANG_HOOKS_FUNCTION_MARK LANG_HOOKS_FUNCTION_FREE \
1077 LANG_HOOKS_MARK_TREE LANG_HOOKS_INSERT_DEFAULT_ATTRIBUTES \
1078 LANG_HOOKS_TREE_INLINING_ESTIMATE_NUM_INSNS \
1079 LANG_HOOKS_PUSHLEVEL LANG_HOOKS_SET_BLOCK \
1080 LANG_HOOKS_MAYBE_BUILD_CLEANUP LANG_HOOKS_UPDATE_DECL_AFTER_SAVING \
1081 LANG_HOOKS_POPLEVEL LANG_HOOKS_TRUTHVALUE_CONVERSION \
1082 TARGET_PROMOTE_FUNCTION_ARGS TARGET_PROMOTE_FUNCTION_RETURN \
1083 LANG_HOOKS_MISSING_ARGUMENT LANG_HOOKS_HASH_TYPES \
1084 TARGET_HANDLE_OFAST TARGET_OPTION_OPTIMIZATION \
1085 TARGET_IRA_COVER_CLASSES TARGET_HELP \
1086 TARGET_HANDLE_PRAGMA_EXTERN_PREFIX \
1087 TARGET_VECTORIZE_BUILTIN_MUL_WIDEN_EVEN \
1088 TARGET_VECTORIZE_BUILTIN_MUL_WIDEN_ODD \
1089 TARGET_MD_ASM_CLOBBERS TARGET_RELAXED_ORDERING \
1090 EXTENDED_SDB_BASIC_TYPES TARGET_INVALID_PARAMETER_TYPE \
1091 TARGET_INVALID_RETURN_TYPE
1092
1093 /* Arrays that were deleted in favor of a functional interface. */
1094 #pragma GCC poison built_in_decls implicit_built_in_decls
1095
1096 /* Hooks into libgcc2. */
1097 #pragma GCC poison LIBGCC2_DOUBLE_TYPE_SIZE LIBGCC2_WORDS_BIG_ENDIAN \
1098 LIBGCC2_FLOAT_WORDS_BIG_ENDIAN
1099
1100 /* Miscellaneous macros that are no longer used. */
1101 #pragma GCC poison USE_MAPPED_LOCATION GET_ENVIRONMENT
1102
1103 /* Libiberty macros that are no longer used in GCC. */
1104 #undef ANSI_PROTOTYPES
1105 #undef PTR_CONST
1106 #undef LONG_DOUBLE
1107 #undef VPARAMS
1108 #undef VA_OPEN
1109 #undef VA_FIXEDARG
1110 #undef VA_CLOSE
1111 #undef VA_START
1112 #pragma GCC poison ANSI_PROTOTYPES PTR_CONST LONG_DOUBLE VPARAMS VA_OPEN \
1113 VA_FIXEDARG VA_CLOSE VA_START
1114 #endif /* IN_GCC */
1115
1116 /* Front ends should never have to include middle-end headers. Enforce
1117 this by poisoning the header double-include protection defines. */
1118 #ifdef IN_GCC_FRONTEND
1119 #pragma GCC poison GCC_RTL_H GCC_EXCEPT_H GCC_EXPR_H
1120 #endif
1121
1122 /* Note: not all uses of the `index' token (e.g. variable names and
1123 structure members) have been eliminated. */
1124 #undef bcopy
1125 #undef bzero
1126 #undef bcmp
1127 #undef rindex
1128 #pragma GCC poison bcopy bzero bcmp rindex
1129
1130 /* Poison ENABLE_CHECKING macro that should be replaced with
1131 'if (flag_checking)', or with CHECKING_P macro. */
1132 #pragma GCC poison ENABLE_CHECKING
1133
1134 #endif /* GCC >= 3.0 */
1135
1136 /* This macro allows casting away const-ness to pass -Wcast-qual
1137 warnings. DO NOT USE THIS UNLESS YOU REALLY HAVE TO! It should
1138 only be used in certain specific cases. One valid case is where
1139 the C standard definitions or prototypes force you to. E.g. if you
1140 need to free a const object, or if you pass a const string to
1141 execv, et al. Another valid use would be in an allocation function
1142 that creates const objects that need to be initialized. In some
1143 cases we have non-const functions that return the argument
1144 (e.g. next_nonnote_insn). Rather than create const shadow
1145 functions, we can cast away const-ness in calling these interfaces
1146 if we're careful to verify that the called function does indeed not
1147 modify its argument and the return value is only used in a const
1148 context. (This can be somewhat dangerous as these assumptions can
1149 change after the fact). Beyond these uses, most other cases of
1150 using this macro should be viewed with extreme caution. */
1151
1152 #ifdef __cplusplus
1153 #define CONST_CAST2(TOTYPE,FROMTYPE,X) (const_cast<TOTYPE> (X))
1154 #else
1155 #if defined(__GNUC__) && GCC_VERSION > 4000
1156 /* GCC 4.0.x has a bug where it may ICE on this expression,
1157 so does GCC 3.4.x (PR17436). */
1158 #define CONST_CAST2(TOTYPE,FROMTYPE,X) ((__extension__(union {FROMTYPE _q; TOTYPE _nq;})(X))._nq)
1159 #elif defined(__GNUC__)
1160 static inline char *
helper_const_non_const_cast(const char * p)1161 helper_const_non_const_cast (const char *p)
1162 {
1163 union {
1164 const char *const_c;
1165 char *c;
1166 } val;
1167 val.const_c = p;
1168 return val.c;
1169 }
1170
1171 #define CONST_CAST2(TOTYPE,FROMTYPE,X) \
1172 ((TOTYPE) helper_const_non_const_cast ((const char *) (FROMTYPE) (X)))
1173 #else
1174 #define CONST_CAST2(TOTYPE,FROMTYPE,X) ((TOTYPE)(FROMTYPE)(X))
1175 #endif
1176 #endif
1177 #define CONST_CAST(TYPE,X) CONST_CAST2 (TYPE, const TYPE, (X))
1178 #define CONST_CAST_TREE(X) CONST_CAST (union tree_node *, (X))
1179 #define CONST_CAST_RTX(X) CONST_CAST (struct rtx_def *, (X))
1180 #define CONST_CAST_RTX_INSN(X) CONST_CAST (struct rtx_insn *, (X))
1181 #define CONST_CAST_BB(X) CONST_CAST (struct basic_block_def *, (X))
1182 #define CONST_CAST_GIMPLE(X) CONST_CAST (gimple *, (X))
1183
1184 /* Activate certain diagnostics as warnings (not errors via the
1185 -Werror flag). */
1186 #if GCC_VERSION >= 4003
1187 /* If asserts are disabled, activate -Wuninitialized as a warning (not
1188 an error/-Werror). */
1189 #ifndef ENABLE_ASSERT_CHECKING
1190 #pragma GCC diagnostic warning "-Wuninitialized"
1191 #endif
1192 #endif
1193
1194 #ifdef ENABLE_VALGRIND_ANNOTATIONS
1195 # ifdef HAVE_VALGRIND_MEMCHECK_H
1196 # include <valgrind/memcheck.h>
1197 # elif defined HAVE_MEMCHECK_H
1198 # include <memcheck.h>
1199 # else
1200 # include <valgrind.h>
1201 # endif
1202 /* Compatibility macros to let valgrind 3.1 work. */
1203 # ifndef VALGRIND_MAKE_MEM_NOACCESS
1204 # define VALGRIND_MAKE_MEM_NOACCESS VALGRIND_MAKE_NOACCESS
1205 # endif
1206 # ifndef VALGRIND_MAKE_MEM_DEFINED
1207 # define VALGRIND_MAKE_MEM_DEFINED VALGRIND_MAKE_READABLE
1208 # endif
1209 # ifndef VALGRIND_MAKE_MEM_UNDEFINED
1210 # define VALGRIND_MAKE_MEM_UNDEFINED VALGRIND_MAKE_WRITABLE
1211 # endif
1212 #else
1213 /* Avoid #ifdef:s when we can help it. */
1214 #define VALGRIND_DISCARD(x)
1215 #define VALGRIND_MALLOCLIKE_BLOCK(w,x,y,z)
1216 #define VALGRIND_FREELIKE_BLOCK(x,y)
1217 #endif
1218
1219 /* Macros to temporarily ignore some warnings. */
1220 #if GCC_VERSION >= 6000
1221 #define GCC_DIAGNOSTIC_STRINGIFY(x) #x
1222 #define GCC_DIAGNOSTIC_PUSH_IGNORED(x) \
1223 _Pragma ("GCC diagnostic push") \
1224 _Pragma (GCC_DIAGNOSTIC_STRINGIFY (GCC diagnostic ignored #x))
1225 #define GCC_DIAGNOSTIC_POP _Pragma ("GCC diagnostic pop")
1226 #else
1227 #define GCC_DIAGNOSTIC_PUSH_IGNORED(x)
1228 #define GCC_DIAGNOSTIC_POP
1229 #endif
1230
1231 /* In LTO -fwhole-program build we still want to keep the debug functions available
1232 for debugger. Mark them as used to prevent removal. */
1233 #if (GCC_VERSION > 4000)
1234 #define DEBUG_FUNCTION __attribute__ ((__used__))
1235 #define DEBUG_VARIABLE __attribute__ ((__used__))
1236 #else
1237 #define DEBUG_FUNCTION
1238 #define DEBUG_VARIABLE
1239 #endif
1240
1241 /* General macro to extract bit Y of X. */
1242 #define TEST_BIT(X, Y) (((X) >> (Y)) & 1)
1243
1244 /* Get definitions of HOST_WIDE_INT. */
1245 #include "hwint.h"
1246
1247 typedef int sort_r_cmp_fn (const void *, const void *, void *);
1248 void qsort_chk (void *, size_t, size_t, sort_r_cmp_fn *, void *);
1249 void gcc_sort_r (void *, size_t, size_t, sort_r_cmp_fn *, void *);
1250 void gcc_qsort (void *, size_t, size_t, int (*)(const void *, const void *));
1251 void gcc_stablesort (void *, size_t, size_t,
1252 int (*)(const void *, const void *));
1253 void gcc_stablesort_r (void *, size_t, size_t, sort_r_cmp_fn *, void *data);
1254 /* Redirect four-argument qsort calls to gcc_qsort; one-argument invocations
1255 correspond to vec::qsort, and use C qsort internally. */
1256 #define PP_5th(a1, a2, a3, a4, a5, ...) a5
1257 #undef qsort
1258 #define qsort(...) PP_5th (__VA_ARGS__, gcc_qsort, 3, 2, qsort, 0) (__VA_ARGS__)
1259
1260 #define ONE_K 1024
1261 #define ONE_M (ONE_K * ONE_K)
1262 #define ONE_G (ONE_K * ONE_M)
1263
1264 /* Display a number as an integer multiple of either:
1265 - 1024, if said integer is >= to 10 K (in base 2)
1266 - 1024 * 1024, if said integer is >= 10 M in (base 2)
1267 */
1268 #define SIZE_SCALE(x) (((x) < 10 * ONE_K \
1269 ? (x) \
1270 : ((x) < 10 * ONE_M \
1271 ? (x) / ONE_K \
1272 : (x) / ONE_M)))
1273
1274 /* For a given integer, display either:
1275 - the character 'k', if the number is higher than 10 K (in base 2)
1276 but strictly lower than 10 M (in base 2)
1277 - the character 'M' if the number is higher than 10 M (in base2)
1278 - the charcter ' ' if the number is strictly lower than 10 K */
1279 #define SIZE_LABEL(x) ((x) < 10 * ONE_K ? ' ' : ((x) < 10 * ONE_M ? 'k' : 'M'))
1280
1281 /* Display an integer amount as multiple of 1K or 1M (in base 2).
1282 Display the correct unit (either k, M, or ' ') after the amount, as
1283 well. */
1284 #define SIZE_AMOUNT(size) (uint64_t)SIZE_SCALE (size), SIZE_LABEL (size)
1285
1286 /* Format string particle for printing a SIZE_AMOUNT with N being the width
1287 of the number. */
1288 #define PRsa(n) "%" #n PRIu64 "%c"
1289
1290 /* System headers may define NULL to be an integer (e.g. 0L), which cannot be
1291 used safely in certain contexts (e.g. as sentinels). Redefine NULL to
1292 nullptr in order to make it safer. Note that this might confuse system
1293 headers, however, by convention they must not be included after this point.
1294 */
1295 #ifdef __cplusplus
1296 #undef NULL
1297 #define NULL nullptr
1298 #endif
1299
1300 /* Return true if STR string starts with PREFIX. */
1301
1302 static inline bool
startswith(const char * str,const char * prefix)1303 startswith (const char *str, const char *prefix)
1304 {
1305 return strncmp (str, prefix, strlen (prefix)) == 0;
1306 }
1307
1308 /* Return true if STR string ends with SUFFIX. */
1309
1310 static inline bool
endswith(const char * str,const char * suffix)1311 endswith (const char *str, const char *suffix)
1312 {
1313 size_t str_len = strlen (str);
1314 size_t suffix_len = strlen (suffix);
1315 if (str_len < suffix_len)
1316 return false;
1317
1318 return memcmp (str + str_len - suffix_len, suffix, suffix_len) == 0;
1319 }
1320
1321 #endif /* ! GCC_SYSTEM_H */
1322