1 /* Get common system includes and various definitions and declarations based
2 on autoconf macros.
3 Copyright (C) 1998-2022 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 #ifndef GENERATOR_FILE
47 #ifdef __cplusplus
48 # include <cstdio>
49 #endif
50 #endif
51
52 #include <stdio.h>
53
54 /* Define a generic NULL if one hasn't already been defined. */
55 #ifndef NULL
56 #define NULL 0
57 #endif
58
59 /* Use the unlocked open routines from libiberty. */
60
61 /* Some of these are #define on some systems, e.g. on AIX to redirect
62 the names to 64bit capable functions for LARGE_FILES support. These
63 redefs are pointless here so we can override them. */
64
65 #undef fopen
66 #undef freopen
67
68 #define fopen(PATH, MODE) fopen_unlocked (PATH, MODE)
69 #define fdopen(FILDES, MODE) fdopen_unlocked (FILDES, MODE)
70 #define freopen(PATH, MODE, STREAM) freopen_unlocked (PATH, MODE, STREAM)
71
72 /* The compiler is not a multi-threaded application and therefore we
73 do not have to use the locking functions. In fact, using the locking
74 functions can cause the compiler to be significantly slower under
75 I/O bound conditions (such as -g -O0 on very large source files).
76
77 HAVE_DECL_PUTC_UNLOCKED actually indicates whether or not the stdio
78 code is multi-thread safe by default. If it is set to 0, then do
79 not worry about using the _unlocked functions.
80
81 fputs_unlocked, fwrite_unlocked, and fprintf_unlocked are
82 extensions and need to be prototyped by hand (since we do not
83 define _GNU_SOURCE). */
84
85 #if defined HAVE_DECL_PUTC_UNLOCKED && HAVE_DECL_PUTC_UNLOCKED
86
87 # ifdef HAVE_PUTC_UNLOCKED
88 # undef putc
89 # define putc(C, Stream) putc_unlocked (C, Stream)
90 # endif
91 # ifdef HAVE_PUTCHAR_UNLOCKED
92 # undef putchar
93 # define putchar(C) putchar_unlocked (C)
94 # endif
95 # ifdef HAVE_GETC_UNLOCKED
96 # undef getc
97 # define getc(Stream) getc_unlocked (Stream)
98 # endif
99 # ifdef HAVE_GETCHAR_UNLOCKED
100 # undef getchar
101 # define getchar() getchar_unlocked ()
102 # endif
103 # ifdef HAVE_FPUTC_UNLOCKED
104 # undef fputc
105 # define fputc(C, Stream) fputc_unlocked (C, Stream)
106 # endif
107
108 #ifdef __cplusplus
109 extern "C" {
110 #endif
111
112 # ifdef HAVE_CLEARERR_UNLOCKED
113 # undef clearerr
114 # define clearerr(Stream) clearerr_unlocked (Stream)
115 # if defined (HAVE_DECL_CLEARERR_UNLOCKED) && !HAVE_DECL_CLEARERR_UNLOCKED
116 extern void clearerr_unlocked (FILE *);
117 # endif
118 # endif
119 # ifdef HAVE_FEOF_UNLOCKED
120 # undef feof
121 # define feof(Stream) feof_unlocked (Stream)
122 # if defined (HAVE_DECL_FEOF_UNLOCKED) && !HAVE_DECL_FEOF_UNLOCKED
123 extern int feof_unlocked (FILE *);
124 # endif
125 # endif
126 # ifdef HAVE_FILENO_UNLOCKED
127 # undef fileno
128 # define fileno(Stream) fileno_unlocked (Stream)
129 # if defined (HAVE_DECL_FILENO_UNLOCKED) && !HAVE_DECL_FILENO_UNLOCKED
130 extern int fileno_unlocked (FILE *);
131 # endif
132 # endif
133 # ifdef HAVE_FFLUSH_UNLOCKED
134 # undef fflush
135 # define fflush(Stream) fflush_unlocked (Stream)
136 # if defined (HAVE_DECL_FFLUSH_UNLOCKED) && !HAVE_DECL_FFLUSH_UNLOCKED
137 extern int fflush_unlocked (FILE *);
138 # endif
139 # endif
140 # ifdef HAVE_FGETC_UNLOCKED
141 # undef fgetc
142 # define fgetc(Stream) fgetc_unlocked (Stream)
143 # if defined (HAVE_DECL_FGETC_UNLOCKED) && !HAVE_DECL_FGETC_UNLOCKED
144 extern int fgetc_unlocked (FILE *);
145 # endif
146 # endif
147 # ifdef HAVE_FGETS_UNLOCKED
148 # undef fgets
149 # define fgets(S, n, Stream) fgets_unlocked (S, n, Stream)
150 # if defined (HAVE_DECL_FGETS_UNLOCKED) && !HAVE_DECL_FGETS_UNLOCKED
151 extern char *fgets_unlocked (char *, int, FILE *);
152 # endif
153 # endif
154 # ifdef HAVE_FPUTS_UNLOCKED
155 # undef fputs
156 # define fputs(String, Stream) fputs_unlocked (String, Stream)
157 # if defined (HAVE_DECL_FPUTS_UNLOCKED) && !HAVE_DECL_FPUTS_UNLOCKED
158 extern int fputs_unlocked (const char *, FILE *);
159 # endif
160 # endif
161 # ifdef HAVE_FERROR_UNLOCKED
162 # undef ferror
163 # define ferror(Stream) ferror_unlocked (Stream)
164 # if defined (HAVE_DECL_FERROR_UNLOCKED) && !HAVE_DECL_FERROR_UNLOCKED
165 extern int ferror_unlocked (FILE *);
166 # endif
167 # endif
168 # ifdef HAVE_FREAD_UNLOCKED
169 # undef fread
170 # define fread(Ptr, Size, N, Stream) fread_unlocked (Ptr, Size, N, Stream)
171 # if defined (HAVE_DECL_FREAD_UNLOCKED) && !HAVE_DECL_FREAD_UNLOCKED
172 extern size_t fread_unlocked (void *, size_t, size_t, FILE *);
173 # endif
174 # endif
175 # ifdef HAVE_FWRITE_UNLOCKED
176 # undef fwrite
177 # define fwrite(Ptr, Size, N, Stream) fwrite_unlocked (Ptr, Size, N, Stream)
178 # if defined (HAVE_DECL_FWRITE_UNLOCKED) && !HAVE_DECL_FWRITE_UNLOCKED
179 extern size_t fwrite_unlocked (const void *, size_t, size_t, FILE *);
180 # endif
181 # endif
182 # ifdef HAVE_FPRINTF_UNLOCKED
183 # undef fprintf
184 /* We can't use a function-like macro here because we don't know if
185 we have varargs macros. */
186 # define fprintf fprintf_unlocked
187 # if defined (HAVE_DECL_FPRINTF_UNLOCKED) && !HAVE_DECL_FPRINTF_UNLOCKED
188 extern int fprintf_unlocked (FILE *, const char *, ...);
189 # endif
190 # endif
191
192 #ifdef __cplusplus
193 }
194 #endif
195
196 #endif
197
198 /* ??? Glibc's fwrite/fread_unlocked macros cause
199 "warning: signed and unsigned type in conditional expression". */
200 #undef fread_unlocked
201 #undef fwrite_unlocked
202
203 /* Include C++ standard headers before "safe-ctype.h" to avoid GCC
204 poisoning the ctype macros through safe-ctype.h */
205
206 #ifdef __cplusplus
207 #if defined (INCLUDE_ALGORITHM) || !defined (HAVE_SWAP_IN_UTILITY)
208 # include <algorithm>
209 #endif
210 #ifdef INCLUDE_LIST
211 # include <list>
212 #endif
213 #ifdef INCLUDE_MAP
214 # include <map>
215 #endif
216 #ifdef INCLUDE_SET
217 # include <set>
218 #endif
219 #ifdef INCLUDE_STRING
220 # include <string>
221 #endif
222 #ifdef INCLUDE_VECTOR
223 # include <vector>
224 #endif
225 #ifdef INCLUDE_ARRAY
226 # include <array>
227 #endif
228 #ifdef INCLUDE_FUNCTIONAL
229 # include <functional>
230 #endif
231 # include <cstring>
232 # include <initializer_list>
233 # include <new>
234 # include <utility>
235 # include <type_traits>
236 #endif
237
238 /* There are an extraordinary number of issues with <ctype.h>.
239 The last straw is that it varies with the locale. Use libiberty's
240 replacement instead. */
241 #include "safe-ctype.h"
242
243 #include <sys/types.h>
244
245 #include <errno.h>
246
247 #if !defined (errno) && defined (HAVE_DECL_ERRNO) && !HAVE_DECL_ERRNO
248 extern int errno;
249 #endif
250
251 /* Some of glibc's string inlines cause warnings. Plus we'd rather
252 rely on (and therefore test) GCC's string builtins. */
253 #define __NO_STRING_INLINES
254
255 #ifdef STRING_WITH_STRINGS
256 # include <string.h>
257 # include <strings.h>
258 #else
259 # ifdef HAVE_STRING_H
260 # include <string.h>
261 # else
262 # ifdef HAVE_STRINGS_H
263 # include <strings.h>
264 # endif
265 # endif
266 #endif
267
268 #ifdef HAVE_STDLIB_H
269 # include <stdlib.h>
270 #endif
271
272 /* When compiling C++ we need to include <cstdlib> as well as <stdlib.h> so
273 that it is processed before we poison "malloc"; otherwise, if a source
274 file uses a standard library header that includes <cstdlib>, we will get
275 an error about 'using std::malloc'. */
276 #ifdef __cplusplus
277 #include <cstdlib>
278 #endif
279
280 /* Undef vec_free from AIX stdlib.h header which conflicts with vec.h. */
281 #undef vec_free
282
283 /* If we don't have an overriding definition, set SUCCESS_EXIT_CODE and
284 FATAL_EXIT_CODE to EXIT_SUCCESS and EXIT_FAILURE respectively,
285 or 0 and 1 if those macros are not defined. */
286 #ifndef SUCCESS_EXIT_CODE
287 # ifdef EXIT_SUCCESS
288 # define SUCCESS_EXIT_CODE EXIT_SUCCESS
289 # else
290 # define SUCCESS_EXIT_CODE 0
291 # endif
292 #endif
293
294 #ifndef FATAL_EXIT_CODE
295 # ifdef EXIT_FAILURE
296 # define FATAL_EXIT_CODE EXIT_FAILURE
297 # else
298 # define FATAL_EXIT_CODE 1
299 # endif
300 #endif
301
302 #define ICE_EXIT_CODE 4
303
304 #ifdef HAVE_UNISTD_H
305 # include <unistd.h>
306 #endif
307
308 #ifdef HAVE_SYS_PARAM_H
309 # include <sys/param.h>
310 /* We use these identifiers later and they appear in some vendor param.h's. */
311 # undef PREFETCH
312 # undef m_slot
313 #endif
314
315 #if HAVE_LIMITS_H
316 # include <limits.h>
317 #endif
318
319 /* A macro to determine whether a VALUE lies inclusively within a
320 certain range without evaluating the VALUE more than once. This
321 macro won't warn if the VALUE is unsigned and the LOWER bound is
322 zero, as it would e.g. with "VALUE >= 0 && ...". Note the LOWER
323 bound *is* evaluated twice, and LOWER must not be greater than
324 UPPER. However the bounds themselves can be either positive or
325 negative. */
326 #define IN_RANGE(VALUE, LOWER, UPPER) \
327 ((unsigned HOST_WIDE_INT) (VALUE) - (unsigned HOST_WIDE_INT) (LOWER) \
328 <= (unsigned HOST_WIDE_INT) (UPPER) - (unsigned HOST_WIDE_INT) (LOWER))
329
330 /* Infrastructure for defining missing _MAX and _MIN macros. Note that
331 macros defined with these cannot be used in #if. */
332
333 /* The extra casts work around common compiler bugs. */
334 #define INTTYPE_SIGNED(t) (! ((t) 0 < (t) -1))
335 /* The outer cast is needed to work around a bug in Cray C 5.0.3.0.
336 It is necessary at least when t == time_t. */
337 #define INTTYPE_MINIMUM(t) ((t) (INTTYPE_SIGNED (t) \
338 ? (t) 1 << (sizeof (t) * CHAR_BIT - 1) : (t) 0))
339 #define INTTYPE_MAXIMUM(t) ((t) (~ (t) 0 - INTTYPE_MINIMUM (t)))
340
341 /* Use that infrastructure to provide a few constants. */
342 #ifndef UCHAR_MAX
343 # define UCHAR_MAX INTTYPE_MAXIMUM (unsigned char)
344 #endif
345
346 #ifdef TIME_WITH_SYS_TIME
347 # include <sys/time.h>
348 # include <time.h>
349 #else
350 # if HAVE_SYS_TIME_H
351 # include <sys/time.h>
352 # else
353 # ifdef HAVE_TIME_H
354 # include <time.h>
355 # endif
356 # endif
357 #endif
358
359 #ifdef HAVE_FCNTL_H
360 # include <fcntl.h>
361 #else
362 # ifdef HAVE_SYS_FILE_H
363 # include <sys/file.h>
364 # endif
365 #endif
366
367 #ifdef HAVE_SYS_LOCKING_H
368 # include <sys/locking.h>
369 #endif
370
371 #ifndef SEEK_SET
372 # define SEEK_SET 0
373 # define SEEK_CUR 1
374 # define SEEK_END 2
375 #endif
376 #ifndef F_OK
377 # define F_OK 0
378 # define X_OK 1
379 # define W_OK 2
380 # define R_OK 4
381 #endif
382 #ifndef O_RDONLY
383 # define O_RDONLY 0
384 #endif
385 #ifndef O_WRONLY
386 # define O_WRONLY 1
387 #endif
388 #ifndef O_BINARY
389 # define O_BINARY 0
390 #endif
391
392 /* Some systems define these in, e.g., param.h. We undefine these names
393 here to avoid the warnings. We prefer to use our definitions since we
394 know they are correct. */
395
396 #undef MIN
397 #undef MAX
398 #define MIN(X,Y) ((X) < (Y) ? (X) : (Y))
399 #define MAX(X,Y) ((X) > (Y) ? (X) : (Y))
400
401 /* Returns the least number N such that N * Y >= X. */
402 #define CEIL(x,y) (((x) + (y) - 1) / (y))
403
404 /* This macro rounds x up to the y boundary. */
405 #define ROUND_UP(x,y) (((x) + (y) - 1) & ~((y) - 1))
406
407 /* This macro rounds x down to the y boundary. */
408 #define ROUND_DOWN(x,y) ((x) & ~((y) - 1))
409
410 #ifdef HAVE_SYS_WAIT_H
411 #include <sys/wait.h>
412 #endif
413
414 #ifndef WIFSIGNALED
415 #define WIFSIGNALED(S) (((S) & 0xff) != 0 && ((S) & 0xff) != 0x7f)
416 #endif
417 #ifndef WTERMSIG
418 #define WTERMSIG(S) ((S) & 0x7f)
419 #endif
420 #ifndef WIFEXITED
421 #define WIFEXITED(S) (((S) & 0xff) == 0)
422 #endif
423 #ifndef WEXITSTATUS
424 #define WEXITSTATUS(S) (((S) & 0xff00) >> 8)
425 #endif
426 #ifndef WSTOPSIG
427 #define WSTOPSIG WEXITSTATUS
428 #endif
429 #ifndef WCOREDUMP
430 #define WCOREDUMP(S) ((S) & WCOREFLG)
431 #endif
432 #ifndef WCOREFLG
433 #define WCOREFLG 0200
434 #endif
435
436 #include <signal.h>
437 #if !defined (SIGCHLD) && defined (SIGCLD)
438 # define SIGCHLD SIGCLD
439 #endif
440
441 #ifdef HAVE_SYS_MMAN_H
442 # include <sys/mman.h>
443 #endif
444
445 #ifndef MAP_FAILED
446 # define MAP_FAILED ((void *)-1)
447 #endif
448
449 #if !defined (MAP_ANONYMOUS) && defined (MAP_ANON)
450 # define MAP_ANONYMOUS MAP_ANON
451 #endif
452
453 #ifdef HAVE_SYS_RESOURCE_H
454 # include <sys/resource.h>
455 #endif
456
457 #ifdef HAVE_SYS_TIMES_H
458 # include <sys/times.h>
459 #endif
460
461 /* The HAVE_DECL_* macros are three-state, undefined, 0 or 1. If they
462 are defined to 0 then we must provide the relevant declaration
463 here. These checks will be in the undefined state while configure
464 is running so be careful to test "defined (HAVE_DECL_*)". */
465
466 #ifdef __cplusplus
467 extern "C" {
468 #endif
469
470 #if defined (HAVE_DECL_ATOF) && !HAVE_DECL_ATOF
471 extern double atof (const char *);
472 #endif
473
474 #if defined (HAVE_DECL_ATOL) && !HAVE_DECL_ATOL
475 extern long atol (const char *);
476 #endif
477
478 #if defined (HAVE_DECL_FREE) && !HAVE_DECL_FREE
479 extern void free (void *);
480 #endif
481
482 #if defined (HAVE_DECL_GETCWD) && !HAVE_DECL_GETCWD
483 extern char *getcwd (char *, size_t);
484 #endif
485
486 #if defined (HAVE_DECL_GETENV) && !HAVE_DECL_GETENV
487 extern char *getenv (const char *);
488 #endif
489
490 #if defined (HAVE_DECL_GETOPT) && !HAVE_DECL_GETOPT
491 extern int getopt (int, char * const *, const char *);
492 #endif
493
494 #if defined (HAVE_DECL_GETPAGESIZE) && !HAVE_DECL_GETPAGESIZE
495 extern int getpagesize (void);
496 #endif
497
498 #if defined (HAVE_DECL_GETWD) && !HAVE_DECL_GETWD
499 extern char *getwd (char *);
500 #endif
501
502 #if defined (HAVE_DECL_SBRK) && !HAVE_DECL_SBRK
503 extern void *sbrk (int);
504 #endif
505
506 #if defined (HAVE_DECL_SETENV) && !HAVE_DECL_SETENV
507 int setenv(const char *, const char *, int);
508 #endif
509
510 #if defined (HAVE_DECL_STRSTR) && !HAVE_DECL_STRSTR
511 extern char *strstr (const char *, const char *);
512 #endif
513
514 #if defined (HAVE_DECL_STPCPY) && !HAVE_DECL_STPCPY
515 extern char *stpcpy (char *, const char *);
516 #endif
517
518 #if defined (HAVE_DECL_UNSETENV) && !HAVE_DECL_UNSETENV
519 int unsetenv(const char *);
520 #endif
521
522 #if defined (HAVE_DECL_MALLOC) && !HAVE_DECL_MALLOC
523 extern void *malloc (size_t);
524 #endif
525
526 #if defined (HAVE_DECL_CALLOC) && !HAVE_DECL_CALLOC
527 extern void *calloc (size_t, size_t);
528 #endif
529
530 #if defined (HAVE_DECL_REALLOC) && !HAVE_DECL_REALLOC
531 extern void *realloc (void *, size_t);
532 #endif
533
534 #ifdef __cplusplus
535 }
536 #endif
537
538 #ifdef HAVE_STDINT_H
539 #include <stdint.h>
540 #endif
541
542 #ifdef HAVE_INTTYPES_H
543 #include <inttypes.h>
544 #endif
545
546 #ifndef SIZE_MAX
547 # define SIZE_MAX INTTYPE_MAXIMUM (size_t)
548 #endif
549
550 #ifdef __cplusplus
551 extern "C" {
552 #endif
553
554 /* If the system doesn't provide strsignal, we get it defined in
555 libiberty but no declaration is supplied. */
556 #if !defined (HAVE_STRSIGNAL) \
557 || (defined (HAVE_DECL_STRSIGNAL) && !HAVE_DECL_STRSIGNAL)
558 # ifndef strsignal
559 extern const char *strsignal (int);
560 # endif
561 #endif
562
563 #ifdef HAVE_GETRLIMIT
564 # if defined (HAVE_DECL_GETRLIMIT) && !HAVE_DECL_GETRLIMIT
565 # ifndef getrlimit
566 struct rlimit;
567 extern int getrlimit (int, struct rlimit *);
568 # endif
569 # endif
570 #endif
571
572 #ifdef HAVE_SETRLIMIT
573 # if defined (HAVE_DECL_SETRLIMIT) && !HAVE_DECL_SETRLIMIT
574 # ifndef setrlimit
575 struct rlimit;
576 extern int setrlimit (int, const struct rlimit *);
577 # endif
578 # endif
579 #endif
580
581 #if defined (HAVE_DECL_ABORT) && !HAVE_DECL_ABORT
582 extern void abort (void);
583 #endif
584
585 #if defined (HAVE_DECL_SNPRINTF) && !HAVE_DECL_SNPRINTF
586 extern int snprintf (char *, size_t, const char *, ...);
587 #endif
588
589 #if defined (HAVE_DECL_VSNPRINTF) && !HAVE_DECL_VSNPRINTF
590 extern int vsnprintf (char *, size_t, const char *, va_list);
591 #endif
592
593 #ifdef __cplusplus
594 }
595 #endif
596
597 /* 1 if we have C99 designated initializers. */
598 #if !defined(HAVE_DESIGNATED_INITIALIZERS)
599 #ifdef __cplusplus
600 #define HAVE_DESIGNATED_INITIALIZERS 0
601 #else
602 #define HAVE_DESIGNATED_INITIALIZERS \
603 ((GCC_VERSION >= 2007) || (__STDC_VERSION__ >= 199901L))
604 #endif
605 #endif
606
607 #if !defined(HAVE_DESIGNATED_UNION_INITIALIZERS)
608 #ifdef __cplusplus
609 #define HAVE_DESIGNATED_UNION_INITIALIZERS (GCC_VERSION >= 4007)
610 #else
611 #define HAVE_DESIGNATED_UNION_INITIALIZERS \
612 ((GCC_VERSION >= 2007) || (__STDC_VERSION__ >= 199901L))
613 #endif
614 #endif
615
616 #if HAVE_SYS_STAT_H
617 # include <sys/stat.h>
618 #endif
619
620 /* Test if something is a normal file. */
621 #ifndef S_ISREG
622 #define S_ISREG(m) (((m) & S_IFMT) == S_IFREG)
623 #endif
624
625 /* Test if something is a directory. */
626 #ifndef S_ISDIR
627 #define S_ISDIR(m) (((m) & S_IFMT) == S_IFDIR)
628 #endif
629
630 /* Test if something is a character special file. */
631 #ifndef S_ISCHR
632 #define S_ISCHR(m) (((m) & S_IFMT) == S_IFCHR)
633 #endif
634
635 /* Test if something is a block special file. */
636 #ifndef S_ISBLK
637 #define S_ISBLK(m) (((m) & S_IFMT) == S_IFBLK)
638 #endif
639
640 /* Test if something is a socket. */
641 #ifndef S_ISSOCK
642 # ifdef S_IFSOCK
643 # define S_ISSOCK(m) (((m) & S_IFMT) == S_IFSOCK)
644 # else
645 # define S_ISSOCK(m) 0
646 # endif
647 #endif
648
649 /* Test if something is a FIFO. */
650 #ifndef S_ISFIFO
651 # ifdef S_IFIFO
652 # define S_ISFIFO(m) (((m) & S_IFMT) == S_IFIFO)
653 # else
654 # define S_ISFIFO(m) 0
655 # endif
656 #endif
657
658 /* Define well known filenos if the system does not define them. */
659 #ifndef STDIN_FILENO
660 # define STDIN_FILENO 0
661 #endif
662 #ifndef STDOUT_FILENO
663 # define STDOUT_FILENO 1
664 #endif
665 #ifndef STDERR_FILENO
666 # define STDERR_FILENO 2
667 #endif
668
669 /* Some systems have mkdir that takes a single argument. */
670 #ifdef MKDIR_TAKES_ONE_ARG
671 # define mkdir(a,b) mkdir (a)
672 #endif
673
674 #ifndef HAVE_KILL
675 # define kill(p,s) raise (s)
676 #endif
677
678 /* Provide a way to print an address via printf. */
679 #ifndef HOST_PTR_PRINTF
680 #define HOST_PTR_PRINTF "%p"
681 #endif /* ! HOST_PTR_PRINTF */
682
683 /* By default, colon separates directories in a path. */
684 #ifndef PATH_SEPARATOR
685 #define PATH_SEPARATOR ':'
686 #endif
687
688 /* Filename handling macros. */
689 #include "filenames.h"
690
691 /* These should be phased out in favor of IS_DIR_SEPARATOR, where possible. */
692 #ifndef DIR_SEPARATOR
693 # define DIR_SEPARATOR '/'
694 # ifdef HAVE_DOS_BASED_FILE_SYSTEM
695 # define DIR_SEPARATOR_2 '\\'
696 # endif
697 #endif
698
699 #if defined (ENABLE_PLUGIN) && defined (HAVE_DLFCN_H)
700 /* If plugin support is enabled, we could use libdl. */
701 #include <dlfcn.h>
702 #endif
703
704 /* Do not introduce a gmp.h dependency on the build system. */
705 #ifndef GENERATOR_FILE
706 #include <gmp.h>
707 #endif
708
709 /* Get libiberty declarations. */
710 #include "libiberty.h"
711
712 #undef FFS /* Some systems predefine this symbol; don't let it interfere. */
713 #undef FLOAT /* Likewise. */
714 #undef ABS /* Likewise. */
715 #undef PC /* Likewise. */
716
717 /* Provide a default for the HOST_BIT_BUCKET.
718 This suffices for POSIX-like hosts. */
719
720 #ifndef HOST_BIT_BUCKET
721 #define HOST_BIT_BUCKET "/dev/null"
722 #endif
723
724 #ifndef offsetof
725 #define offsetof(TYPE, MEMBER) ((size_t) &((TYPE *) 0)->MEMBER)
726 #endif
727
728 /* Various error reporting routines want to use __FUNCTION__. */
729 #if (GCC_VERSION < 2007)
730 #ifndef __FUNCTION__
731 #define __FUNCTION__ "?"
732 #endif /* ! __FUNCTION__ */
733 #endif
734
735 /* __builtin_expect(A, B) evaluates to A, but notifies the compiler that
736 the most likely value of A is B. This feature was added at some point
737 between 2.95 and 3.0. Let's use 3.0 as the lower bound for now. */
738 #if (GCC_VERSION < 3000)
739 #define __builtin_expect(a, b) (a)
740 #endif
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_MALLOC_H
751 #if defined(HAVE_MALLINFO) || defined(HAVE_MALLINFO2)
752 #include <malloc.h>
753 #endif
754 #endif
755
756 #ifdef INCLUDE_PTHREAD_H
757 #include <pthread.h>
758 #endif
759
760 #ifdef INCLUDE_ISL
761 #ifdef HAVE_isl
762 #include <isl/options.h>
763 #include <isl/ctx.h>
764 #include <isl/val.h>
765 #include <isl/set.h>
766 #include <isl/union_set.h>
767 #include <isl/map.h>
768 #include <isl/union_map.h>
769 #include <isl/aff.h>
770 #include <isl/constraint.h>
771 #include <isl/flow.h>
772 #include <isl/ilp.h>
773 #include <isl/schedule.h>
774 #include <isl/ast_build.h>
775 #include <isl/schedule_node.h>
776 #include <isl/id.h>
777 #include <isl/space.h>
778 #endif
779 #endif
780
781 /* Redefine abort to report an internal error w/o coredump, and
782 reporting the location of the error in the source file. */
783 extern void fancy_abort (const char *, int, const char *)
784 ATTRIBUTE_NORETURN ATTRIBUTE_COLD;
785 #define abort() fancy_abort (__FILE__, __LINE__, __FUNCTION__)
786
787 /* Use gcc_assert(EXPR) to test invariants. */
788 #if ENABLE_ASSERT_CHECKING
789 #define gcc_assert(EXPR) \
790 ((void)(!(EXPR) ? fancy_abort (__FILE__, __LINE__, __FUNCTION__), 0 : 0))
791 #elif (GCC_VERSION >= 4005)
792 #define gcc_assert(EXPR) \
793 ((void)(__builtin_expect (!(EXPR), 0) ? __builtin_unreachable (), 0 : 0))
794 #else
795 /* Include EXPR, so that unused variable warnings do not occur. */
796 #define gcc_assert(EXPR) ((void)(0 && (EXPR)))
797 #endif
798
799 #if CHECKING_P
800 #define gcc_checking_assert(EXPR) gcc_assert (EXPR)
801 #else
802 /* N.B.: in release build EXPR is not evaluated. */
803 #define gcc_checking_assert(EXPR) ((void)(0 && (EXPR)))
804 #endif
805
806 #if GCC_VERSION >= 4000
807 #define ALWAYS_INLINE inline __attribute__ ((always_inline))
808 #else
809 #define ALWAYS_INLINE inline
810 #endif
811
812 #if GCC_VERSION >= 3004
813 #define WARN_UNUSED_RESULT __attribute__ ((__warn_unused_result__))
814 #else
815 #define WARN_UNUSED_RESULT
816 #endif
817
818 /* Use gcc_unreachable() to mark unreachable locations (like an
819 unreachable default case of a switch. Do not use gcc_assert(0). */
820 #if (GCC_VERSION >= 4005) && !ENABLE_ASSERT_CHECKING
821 #define gcc_unreachable() __builtin_unreachable ()
822 #else
823 #define gcc_unreachable() (fancy_abort (__FILE__, __LINE__, __FUNCTION__))
824 #endif
825
826 #if GCC_VERSION >= 7000 && defined(__has_attribute)
827 # if __has_attribute(fallthrough)
828 # define gcc_fallthrough() __attribute__((fallthrough))
829 # else
830 # define gcc_fallthrough()
831 # endif
832 #else
833 # define gcc_fallthrough()
834 #endif
835
836 #if GCC_VERSION >= 3001
837 #define STATIC_CONSTANT_P(X) (__builtin_constant_p (X) && (X))
838 #else
839 #define STATIC_CONSTANT_P(X) (false && (X))
840 #endif
841
842 /* static_assert (COND, MESSAGE) is available in C++11 onwards. */
843 #if __cplusplus >= 201103L
844 #define STATIC_ASSERT(X) \
845 static_assert ((X), #X)
846 #else
847 #define STATIC_ASSERT(X) \
848 typedef int assertion1[(X) ? 1 : -1] ATTRIBUTE_UNUSED
849 #endif
850
851 /* Provide a fake boolean type. We make no attempt to use the
852 C99 _Bool, as it may not be available in the bootstrap compiler,
853 and even if it is, it is liable to be buggy.
854 This must be after all inclusion of system headers, as some of
855 them will mess us up. */
856
857 #undef TRUE
858 #undef FALSE
859
860 #ifdef __cplusplus
861 /* Obsolete. */
862 # define TRUE true
863 # define FALSE false
864 #else /* !__cplusplus */
865 # undef bool
866 # undef true
867 # undef false
868
869 # define bool unsigned char
870 # define true 1
871 # define false 0
872
873 /* Obsolete. */
874 # define TRUE true
875 # define FALSE false
876 #endif /* !__cplusplus */
877
878 /* Some compilers do not allow the use of unsigned char in bitfields. */
879 #define BOOL_BITFIELD unsigned int
880
881 /* GCC older than 4.4 have broken C++ value initialization handling, see
882 PR11309, PR30111, PR33916, PR82939 and PR84405 for more details. */
883 #if GCC_VERSION > 0 && GCC_VERSION < 4004 && !defined(__clang__)
884 # define BROKEN_VALUE_INITIALIZATION
885 #endif
886
887 /* As the last action in this file, we poison the identifiers that
888 shouldn't be used. Note, luckily gcc-3.0's token-based integrated
889 preprocessor won't trip on poisoned identifiers that arrive from
890 the expansion of macros. E.g. #define strrchr rindex, won't error
891 if rindex is poisoned after this directive is issued and later on
892 strrchr is called.
893
894 Note: We define bypass macros for the few cases where we really
895 want to use the libc memory allocation routines. Otherwise we
896 insist you use the "x" versions from libiberty. */
897
898 #define really_call_malloc malloc
899 #define really_call_calloc calloc
900 #define really_call_realloc realloc
901
902 #if defined(FLEX_SCANNER) || defined(YYBISON) || defined(YYBYACC)
903 /* Flex and bison use malloc and realloc. Yuk. Note that this means
904 really_call_* cannot be used in a .l or .y file. */
905 #define malloc xmalloc
906 #define realloc xrealloc
907 #endif
908
909 #if (GCC_VERSION >= 3000)
910
911 /* Note autoconf checks for prototype declarations and includes
912 system.h while doing so. Only poison these tokens if actually
913 compiling gcc, so that the autoconf declaration tests for malloc
914 etc don't spuriously fail. */
915 #ifdef IN_GCC
916
917 #undef calloc
918 #undef strdup
919 #undef strndup
920 #pragma GCC poison calloc strdup strndup
921
922 #if !defined(FLEX_SCANNER) && !defined(YYBISON)
923 #undef malloc
924 #undef realloc
925 #pragma GCC poison malloc realloc
926 #endif
927
928 /* The %m format should be used when GCC's main diagnostic functions
929 supporting %m are available, and xstrerror from libiberty
930 otherwise. */
931 #undef strerror
932 #pragma GCC poison strerror
933
934 /* loc_t is defined on some systems and too inviting for some
935 programmers to avoid. */
936 #undef loc_t
937 #pragma GCC poison loc_t
938
939 /* Old target macros that have moved to the target hooks structure. */
940 #pragma GCC poison ASM_OPEN_PAREN ASM_CLOSE_PAREN \
941 FUNCTION_PROLOGUE FUNCTION_EPILOGUE \
942 FUNCTION_END_PROLOGUE FUNCTION_BEGIN_EPILOGUE \
943 DECL_MACHINE_ATTRIBUTES COMP_TYPE_ATTRIBUTES INSERT_ATTRIBUTES \
944 VALID_MACHINE_DECL_ATTRIBUTE VALID_MACHINE_TYPE_ATTRIBUTE \
945 SET_DEFAULT_TYPE_ATTRIBUTES SET_DEFAULT_DECL_ATTRIBUTES \
946 MERGE_MACHINE_TYPE_ATTRIBUTES MERGE_MACHINE_DECL_ATTRIBUTES \
947 MD_INIT_BUILTINS MD_EXPAND_BUILTIN ASM_OUTPUT_CONSTRUCTOR \
948 ASM_OUTPUT_DESTRUCTOR SIGNED_CHAR_SPEC MAX_CHAR_TYPE_SIZE \
949 WCHAR_UNSIGNED UNIQUE_SECTION SELECT_SECTION SELECT_RTX_SECTION \
950 ENCODE_SECTION_INFO STRIP_NAME_ENCODING ASM_GLOBALIZE_LABEL \
951 ASM_OUTPUT_MI_THUNK CONST_COSTS RTX_COSTS DEFAULT_RTX_COSTS \
952 ADDRESS_COST MACHINE_DEPENDENT_REORG ASM_FILE_START ASM_FILE_END \
953 ASM_SIMPLIFY_DWARF_ADDR INIT_TARGET_OPTABS INIT_SUBTARGET_OPTABS \
954 INIT_GOFAST_OPTABS MULSI3_LIBCALL MULDI3_LIBCALL DIVSI3_LIBCALL \
955 DIVDI3_LIBCALL UDIVSI3_LIBCALL UDIVDI3_LIBCALL MODSI3_LIBCALL \
956 MODDI3_LIBCALL UMODSI3_LIBCALL UMODDI3_LIBCALL BUILD_VA_LIST_TYPE \
957 PRETEND_OUTGOING_VARARGS_NAMED STRUCT_VALUE_INCOMING_REGNUM \
958 ASM_OUTPUT_SECTION_NAME PROMOTE_FUNCTION_ARGS PROMOTE_FUNCTION_MODE \
959 STRUCT_VALUE_INCOMING STRICT_ARGUMENT_NAMING \
960 PROMOTE_FUNCTION_RETURN PROMOTE_PROTOTYPES STRUCT_VALUE_REGNUM \
961 SETUP_INCOMING_VARARGS EXPAND_BUILTIN_SAVEREGS \
962 DEFAULT_SHORT_ENUMS SPLIT_COMPLEX_ARGS MD_ASM_CLOBBERS \
963 HANDLE_PRAGMA_REDEFINE_EXTNAME HANDLE_PRAGMA_EXTERN_PREFIX \
964 MUST_PASS_IN_STACK FUNCTION_ARG_PASS_BY_REFERENCE \
965 VECTOR_MODE_SUPPORTED_P TARGET_SUPPORTS_HIDDEN \
966 FUNCTION_ARG_PARTIAL_NREGS ASM_OUTPUT_DWARF_DTPREL \
967 ALLOCATE_INITIAL_VALUE LEGITIMIZE_ADDRESS FRAME_POINTER_REQUIRED \
968 CAN_ELIMINATE TRAMPOLINE_TEMPLATE INITIALIZE_TRAMPOLINE \
969 TRAMPOLINE_ADJUST_ADDRESS STATIC_CHAIN STATIC_CHAIN_INCOMING \
970 RETURN_POPS_ARGS UNITS_PER_SIMD_WORD OVERRIDE_OPTIONS \
971 OPTIMIZATION_OPTIONS CLASS_LIKELY_SPILLED_P \
972 USING_SJLJ_EXCEPTIONS TARGET_UNWIND_INFO \
973 CAN_DEBUG_WITHOUT_FP UNLIKELY_EXECUTED_TEXT_SECTION_NAME \
974 HOT_TEXT_SECTION_NAME LEGITIMATE_CONSTANT_P ALWAYS_STRIP_DOTDOT \
975 OUTPUT_ADDR_CONST_EXTRA SMALL_REGISTER_CLASSES ASM_OUTPUT_IDENT \
976 ASM_BYTE_OP MEMBER_TYPE_FORCES_BLK LIBGCC2_HAS_SF_MODE \
977 LIBGCC2_HAS_DF_MODE LIBGCC2_HAS_XF_MODE LIBGCC2_HAS_TF_MODE \
978 CLEAR_BY_PIECES_P MOVE_BY_PIECES_P SET_BY_PIECES_P \
979 STORE_BY_PIECES_P TARGET_FLT_EVAL_METHOD \
980 HARD_REGNO_CALL_PART_CLOBBERED HARD_REGNO_MODE_OK \
981 MODES_TIEABLE_P FUNCTION_ARG_PADDING SLOW_UNALIGNED_ACCESS \
982 HARD_REGNO_NREGS SECONDARY_MEMORY_NEEDED_MODE \
983 SECONDARY_MEMORY_NEEDED CANNOT_CHANGE_MODE_CLASS \
984 TRULY_NOOP_TRUNCATION FUNCTION_ARG_OFFSET CONSTANT_ALIGNMENT \
985 STARTING_FRAME_OFFSET
986
987 /* Target macros only used for code built for the target, that have
988 moved to libgcc-tm.h or have never been present elsewhere. */
989 #pragma GCC poison DECLARE_LIBRARY_RENAMES LIBGCC2_GNU_PREFIX \
990 MD_UNWIND_SUPPORT MD_FROB_UPDATE_CONTEXT ENABLE_EXECUTE_STACK \
991 REG_VALUE_IN_UNWIND_CONTEXT ASSUME_EXTENDED_UNWIND_CONTEXT
992
993 /* Other obsolete target macros, or macros that used to be in target
994 headers and were not used, and may be obsolete or may never have
995 been used. */
996 #pragma GCC poison INT_ASM_OP ASM_OUTPUT_EH_REGION_BEG CPP_PREDEFINES \
997 ASM_OUTPUT_EH_REGION_END ASM_OUTPUT_LABELREF_AS_INT SMALL_STACK \
998 DOESNT_NEED_UNWINDER EH_TABLE_LOOKUP OBJC_SELECTORS_WITHOUT_LABELS \
999 OMIT_EH_TABLE EASY_DIV_EXPR IMPLICIT_FIX_EXPR \
1000 LONGJMP_RESTORE_FROM_STACK MAX_INT_TYPE_SIZE ASM_IDENTIFY_GCC \
1001 STDC_VALUE TRAMPOLINE_ALIGN ASM_IDENTIFY_GCC_AFTER_SOURCE \
1002 SLOW_ZERO_EXTEND SUBREG_REGNO_OFFSET DWARF_LINE_MIN_INSTR_LENGTH \
1003 TRADITIONAL_RETURN_FLOAT NO_BUILTIN_SIZE_TYPE \
1004 NO_BUILTIN_PTRDIFF_TYPE NO_BUILTIN_WCHAR_TYPE NO_BUILTIN_WINT_TYPE \
1005 BLOCK_PROFILER BLOCK_PROFILER_CODE FUNCTION_BLOCK_PROFILER \
1006 FUNCTION_BLOCK_PROFILER_EXIT MACHINE_STATE_SAVE \
1007 MACHINE_STATE_RESTORE SCCS_DIRECTIVE SECTION_ASM_OP BYTEORDER \
1008 ASM_OUTPUT_DEFINE_LABEL_DIFFERENCE_SYMBOL HOST_WORDS_BIG_ENDIAN \
1009 OBJC_PROLOGUE ALLOCATE_TRAMPOLINE HANDLE_PRAGMA ROUND_TYPE_SIZE \
1010 ROUND_TYPE_SIZE_UNIT CONST_SECTION_ASM_OP CRT_GET_RFIB_TEXT \
1011 DBX_LBRAC_FIRST DBX_OUTPUT_ENUM DBX_OUTPUT_SOURCE_FILENAME \
1012 DBX_WORKING_DIRECTORY INSN_CACHE_DEPTH INSN_CACHE_SIZE \
1013 INSN_CACHE_LINE_WIDTH INIT_SECTION_PREAMBLE NEED_ATEXIT ON_EXIT \
1014 EXIT_BODY OBJECT_FORMAT_ROSE MULTIBYTE_CHARS MAP_CHARACTER \
1015 LIBGCC_NEEDS_DOUBLE FINAL_PRESCAN_LABEL DEFAULT_CALLER_SAVES \
1016 LOAD_ARGS_REVERSED MAX_INTEGER_COMPUTATION_MODE \
1017 CONVERT_HARD_REGISTER_TO_SSA_P ASM_OUTPUT_MAIN_SOURCE_FILENAME \
1018 FIRST_INSN_ADDRESS TEXT_SECTION SHARED_BSS_SECTION_ASM_OP \
1019 PROMOTED_MODE EXPAND_BUILTIN_VA_END \
1020 LINKER_DOES_NOT_WORK_WITH_DWARF2 FUNCTION_ARG_KEEP_AS_REFERENCE \
1021 GIV_SORT_CRITERION MAX_LONG_TYPE_SIZE MAX_LONG_DOUBLE_TYPE_SIZE \
1022 MAX_WCHAR_TYPE_SIZE SHARED_SECTION_ASM_OP INTEGRATE_THRESHOLD \
1023 FINAL_REG_PARM_STACK_SPACE MAYBE_REG_PARM_STACK_SPACE \
1024 TRADITIONAL_PIPELINE_INTERFACE DFA_PIPELINE_INTERFACE \
1025 DBX_OUTPUT_STANDARD_TYPES BUILTIN_SETJMP_FRAME_VALUE \
1026 SUNOS4_SHARED_LIBRARIES PROMOTE_FOR_CALL_ONLY \
1027 SPACE_AFTER_L_OPTION NO_RECURSIVE_FUNCTION_CSE \
1028 DEFAULT_MAIN_RETURN TARGET_MEM_FUNCTIONS EXPAND_BUILTIN_VA_ARG \
1029 COLLECT_PARSE_FLAG DWARF2_GENERATE_TEXT_SECTION_LABEL WINNING_GDB \
1030 ASM_OUTPUT_FILENAME ASM_OUTPUT_SOURCE_LINE FILE_NAME_JOINER \
1031 GDB_INV_REF_REGPARM_STABS_LETTER DBX_MEMPARM_STABS_LETTER \
1032 PUT_SDB_SRC_FILE STABS_GCC_MARKER DBX_OUTPUT_FUNCTION_END \
1033 DBX_OUTPUT_GCC_MARKER DBX_FINISH_SYMBOL SDB_GENERATE_FAKE \
1034 NON_SAVING_SETJMP TARGET_LATE_RTL_PROLOGUE_EPILOGUE \
1035 CASE_DROPS_THROUGH TARGET_BELL TARGET_BS TARGET_CR TARGET_DIGIT0 \
1036 TARGET_ESC TARGET_FF TARGET_NEWLINE TARGET_TAB TARGET_VT \
1037 LINK_LIBGCC_SPECIAL DONT_ACCESS_GBLS_AFTER_EPILOGUE \
1038 TARGET_OPTIONS TARGET_SWITCHES EXTRA_CC_MODES FINALIZE_PIC \
1039 PREDICATE_CODES SPECIAL_MODE_PREDICATES UNALIGNED_WORD_ASM_OP \
1040 EXTRA_SECTIONS EXTRA_SECTION_FUNCTIONS READONLY_DATA_SECTION \
1041 TARGET_ASM_EXCEPTION_SECTION TARGET_ASM_EH_FRAME_SECTION \
1042 SMALL_ARG_MAX ASM_OUTPUT_SHARED_BSS ASM_OUTPUT_SHARED_COMMON \
1043 ASM_OUTPUT_SHARED_LOCAL ASM_MAKE_LABEL_LINKONCE \
1044 STACK_CHECK_PROBE_INTERVAL STACK_CHECK_PROBE_LOAD \
1045 ORDER_REGS_FOR_LOCAL_ALLOC FUNCTION_OUTGOING_VALUE \
1046 ASM_DECLARE_CONSTANT_NAME MODIFY_TARGET_NAME SWITCHES_NEED_SPACES \
1047 SWITCH_CURTAILS_COMPILATION SWITCH_TAKES_ARG WORD_SWITCH_TAKES_ARG \
1048 TARGET_OPTION_TRANSLATE_TABLE HANDLE_PRAGMA_PACK_PUSH_POP \
1049 HANDLE_SYSV_PRAGMA HANDLE_PRAGMA_WEAK CONDITIONAL_REGISTER_USAGE \
1050 FUNCTION_ARG_BOUNDARY MUST_USE_SJLJ_EXCEPTIONS US_SOFTWARE_GOFAST \
1051 USING_SVR4_H SVR4_ASM_SPEC FUNCTION_ARG FUNCTION_ARG_ADVANCE \
1052 FUNCTION_INCOMING_ARG IRA_COVER_CLASSES TARGET_VERSION \
1053 MACHINE_TYPE TARGET_HAS_TARGETCM ASM_OUTPUT_BSS \
1054 SETJMP_VIA_SAVE_AREA FORBIDDEN_INC_DEC_CLASSES \
1055 PREFERRED_OUTPUT_RELOAD_CLASS SYSTEM_INCLUDE_DIR \
1056 STANDARD_INCLUDE_DIR STANDARD_INCLUDE_COMPONENT \
1057 LINK_ELIMINATE_DUPLICATE_LDIRECTORIES MIPS_DEBUGGING_INFO \
1058 IDENT_ASM_OP ALL_COP_ADDITIONAL_REGISTER_NAMES DBX_OUTPUT_LBRAC \
1059 DBX_OUTPUT_NFUN DBX_OUTPUT_RBRAC RANGE_TEST_NON_SHORT_CIRCUIT \
1060 REAL_VALUE_TRUNCATE REVERSE_CONDEXEC_PREDICATES_P \
1061 TARGET_ALIGN_ANON_BITFIELDS TARGET_NARROW_VOLATILE_BITFIELDS \
1062 IDENT_ASM_OP UNALIGNED_SHORT_ASM_OP UNALIGNED_INT_ASM_OP \
1063 UNALIGNED_LONG_ASM_OP UNALIGNED_DOUBLE_INT_ASM_OP \
1064 USE_COMMON_FOR_ONE_ONLY IFCVT_EXTRA_FIELDS IFCVT_INIT_EXTRA_FIELDS \
1065 CASE_USE_BIT_TESTS FIXUNS_TRUNC_LIKE_FIX_TRUNC \
1066 GO_IF_MODE_DEPENDENT_ADDRESS DELAY_SLOTS_FOR_EPILOGUE \
1067 ELIGIBLE_FOR_EPILOGUE_DELAY TARGET_C99_FUNCTIONS TARGET_HAS_SINCOS \
1068 REG_CLASS_FROM_LETTER CONST_OK_FOR_LETTER_P \
1069 CONST_DOUBLE_OK_FOR_LETTER_P EXTRA_CONSTRAINT \
1070 REG_CLASS_FROM_CONSTRAINT REG_CLASS_FOR_CONSTRAINT \
1071 EXTRA_CONSTRAINT_STR EXTRA_MEMORY_CONSTRAINT \
1072 EXTRA_ADDRESS_CONSTRAINT CONST_DOUBLE_OK_FOR_CONSTRAINT_P \
1073 CALLER_SAVE_PROFITABLE LARGEST_EXPONENT_IS_NORMAL \
1074 ROUND_TOWARDS_ZERO SF_SIZE DF_SIZE XF_SIZE TF_SIZE LIBGCC2_TF_CEXT \
1075 LIBGCC2_LONG_DOUBLE_TYPE_SIZE STRUCT_VALUE \
1076 EH_FRAME_IN_DATA_SECTION TARGET_FLT_EVAL_METHOD_NON_DEFAULT \
1077 JCR_SECTION_NAME TARGET_USE_JCR_SECTION SDB_DEBUGGING_INFO \
1078 SDB_DEBUG NO_IMPLICIT_EXTERN_C NOTICE_UPDATE_CC \
1079 CC_STATUS_MDEP_INIT CC_STATUS_MDEP CC_STATUS
1080
1081 /* Hooks that are no longer used. */
1082 #pragma GCC poison LANG_HOOKS_FUNCTION_MARK LANG_HOOKS_FUNCTION_FREE \
1083 LANG_HOOKS_MARK_TREE LANG_HOOKS_INSERT_DEFAULT_ATTRIBUTES \
1084 LANG_HOOKS_TREE_INLINING_ESTIMATE_NUM_INSNS \
1085 LANG_HOOKS_PUSHLEVEL LANG_HOOKS_SET_BLOCK \
1086 LANG_HOOKS_MAYBE_BUILD_CLEANUP LANG_HOOKS_UPDATE_DECL_AFTER_SAVING \
1087 LANG_HOOKS_POPLEVEL LANG_HOOKS_TRUTHVALUE_CONVERSION \
1088 TARGET_PROMOTE_FUNCTION_ARGS TARGET_PROMOTE_FUNCTION_RETURN \
1089 LANG_HOOKS_MISSING_ARGUMENT LANG_HOOKS_HASH_TYPES \
1090 TARGET_HANDLE_OFAST TARGET_OPTION_OPTIMIZATION \
1091 TARGET_IRA_COVER_CLASSES TARGET_HELP \
1092 TARGET_HANDLE_PRAGMA_EXTERN_PREFIX \
1093 TARGET_VECTORIZE_BUILTIN_MUL_WIDEN_EVEN \
1094 TARGET_VECTORIZE_BUILTIN_MUL_WIDEN_ODD \
1095 TARGET_MD_ASM_CLOBBERS TARGET_RELAXED_ORDERING \
1096 EXTENDED_SDB_BASIC_TYPES TARGET_INVALID_PARAMETER_TYPE \
1097 TARGET_INVALID_RETURN_TYPE
1098
1099 /* Arrays that were deleted in favor of a functional interface. */
1100 #pragma GCC poison built_in_decls implicit_built_in_decls
1101
1102 /* Hooks into libgcc2. */
1103 #pragma GCC poison LIBGCC2_DOUBLE_TYPE_SIZE LIBGCC2_WORDS_BIG_ENDIAN \
1104 LIBGCC2_FLOAT_WORDS_BIG_ENDIAN
1105
1106 /* Miscellaneous macros that are no longer used. */
1107 #pragma GCC poison USE_MAPPED_LOCATION GET_ENVIRONMENT
1108
1109 /* Libiberty macros that are no longer used in GCC. */
1110 #undef ANSI_PROTOTYPES
1111 #undef PTR_CONST
1112 #undef LONG_DOUBLE
1113 #undef VPARAMS
1114 #undef VA_OPEN
1115 #undef VA_FIXEDARG
1116 #undef VA_CLOSE
1117 #undef VA_START
1118 #pragma GCC poison ANSI_PROTOTYPES PTR_CONST LONG_DOUBLE VPARAMS VA_OPEN \
1119 VA_FIXEDARG VA_CLOSE VA_START
1120 #endif /* IN_GCC */
1121
1122 /* Front ends should never have to include middle-end headers. Enforce
1123 this by poisoning the header double-include protection defines. */
1124 #ifdef IN_GCC_FRONTEND
1125 #pragma GCC poison GCC_RTL_H GCC_EXCEPT_H GCC_EXPR_H
1126 #endif
1127
1128 /* Note: not all uses of the `index' token (e.g. variable names and
1129 structure members) have been eliminated. */
1130 #undef bcopy
1131 #undef bzero
1132 #undef bcmp
1133 #undef rindex
1134 #pragma GCC poison bcopy bzero bcmp rindex
1135
1136 /* Poison ENABLE_CHECKING macro that should be replaced with
1137 'if (flag_checking)', or with CHECKING_P macro. */
1138 #pragma GCC poison ENABLE_CHECKING
1139
1140 #endif /* GCC >= 3.0 */
1141
1142 /* This macro allows casting away const-ness to pass -Wcast-qual
1143 warnings. DO NOT USE THIS UNLESS YOU REALLY HAVE TO! It should
1144 only be used in certain specific cases. One valid case is where
1145 the C standard definitions or prototypes force you to. E.g. if you
1146 need to free a const object, or if you pass a const string to
1147 execv, et al. Another valid use would be in an allocation function
1148 that creates const objects that need to be initialized. In some
1149 cases we have non-const functions that return the argument
1150 (e.g. next_nonnote_insn). Rather than create const shadow
1151 functions, we can cast away const-ness in calling these interfaces
1152 if we're careful to verify that the called function does indeed not
1153 modify its argument and the return value is only used in a const
1154 context. (This can be somewhat dangerous as these assumptions can
1155 change after the fact). Beyond these uses, most other cases of
1156 using this macro should be viewed with extreme caution. */
1157
1158 #ifdef __cplusplus
1159 #define CONST_CAST2(TOTYPE,FROMTYPE,X) (const_cast<TOTYPE> (X))
1160 #else
1161 #if defined(__GNUC__) && GCC_VERSION > 4000
1162 /* GCC 4.0.x has a bug where it may ICE on this expression,
1163 so does GCC 3.4.x (PR17436). */
1164 #define CONST_CAST2(TOTYPE,FROMTYPE,X) ((__extension__(union {FROMTYPE _q; TOTYPE _nq;})(X))._nq)
1165 #elif defined(__GNUC__)
1166 static inline char *
helper_const_non_const_cast(const char * p)1167 helper_const_non_const_cast (const char *p)
1168 {
1169 union {
1170 const char *const_c;
1171 char *c;
1172 } val;
1173 val.const_c = p;
1174 return val.c;
1175 }
1176
1177 #define CONST_CAST2(TOTYPE,FROMTYPE,X) \
1178 ((TOTYPE) helper_const_non_const_cast ((const char *) (FROMTYPE) (X)))
1179 #else
1180 #define CONST_CAST2(TOTYPE,FROMTYPE,X) ((TOTYPE)(FROMTYPE)(X))
1181 #endif
1182 #endif
1183 #define CONST_CAST(TYPE,X) CONST_CAST2 (TYPE, const TYPE, (X))
1184 #define CONST_CAST_TREE(X) CONST_CAST (union tree_node *, (X))
1185 #define CONST_CAST_RTX(X) CONST_CAST (struct rtx_def *, (X))
1186 #define CONST_CAST_RTX_INSN(X) CONST_CAST (struct rtx_insn *, (X))
1187 #define CONST_CAST_BB(X) CONST_CAST (struct basic_block_def *, (X))
1188 #define CONST_CAST_GIMPLE(X) CONST_CAST (gimple *, (X))
1189
1190 /* Activate certain diagnostics as warnings (not errors via the
1191 -Werror flag). */
1192 #if GCC_VERSION >= 4003
1193 /* If asserts are disabled, activate -Wuninitialized as a warning (not
1194 an error/-Werror). */
1195 #ifndef ENABLE_ASSERT_CHECKING
1196 #pragma GCC diagnostic warning "-Wuninitialized"
1197 #endif
1198 #endif
1199
1200 #ifdef ENABLE_VALGRIND_ANNOTATIONS
1201 # ifdef HAVE_VALGRIND_MEMCHECK_H
1202 # include <valgrind/memcheck.h>
1203 # elif defined HAVE_MEMCHECK_H
1204 # include <memcheck.h>
1205 # else
1206 # include <valgrind.h>
1207 # endif
1208 /* Compatibility macros to let valgrind 3.1 work. */
1209 # ifndef VALGRIND_MAKE_MEM_NOACCESS
1210 # define VALGRIND_MAKE_MEM_NOACCESS VALGRIND_MAKE_NOACCESS
1211 # endif
1212 # ifndef VALGRIND_MAKE_MEM_DEFINED
1213 # define VALGRIND_MAKE_MEM_DEFINED VALGRIND_MAKE_READABLE
1214 # endif
1215 # ifndef VALGRIND_MAKE_MEM_UNDEFINED
1216 # define VALGRIND_MAKE_MEM_UNDEFINED VALGRIND_MAKE_WRITABLE
1217 # endif
1218 #else
1219 /* Avoid #ifdef:s when we can help it. */
1220 #define VALGRIND_DISCARD(x)
1221 #define VALGRIND_MALLOCLIKE_BLOCK(w,x,y,z)
1222 #define VALGRIND_FREELIKE_BLOCK(x,y)
1223 #endif
1224
1225 /* Macros to temporarily ignore some warnings. */
1226 #if GCC_VERSION >= 6000
1227 #define GCC_DIAGNOSTIC_STRINGIFY(x) #x
1228 #define GCC_DIAGNOSTIC_PUSH_IGNORED(x) \
1229 _Pragma ("GCC diagnostic push") \
1230 _Pragma (GCC_DIAGNOSTIC_STRINGIFY (GCC diagnostic ignored #x))
1231 #define GCC_DIAGNOSTIC_POP _Pragma ("GCC diagnostic pop")
1232 #else
1233 #define GCC_DIAGNOSTIC_PUSH_IGNORED(x)
1234 #define GCC_DIAGNOSTIC_POP
1235 #endif
1236
1237 /* In LTO -fwhole-program build we still want to keep the debug functions available
1238 for debugger. Mark them as used to prevent removal. */
1239 #if (GCC_VERSION > 4000)
1240 #define DEBUG_FUNCTION __attribute__ ((__used__))
1241 #define DEBUG_VARIABLE __attribute__ ((__used__))
1242 #else
1243 #define DEBUG_FUNCTION
1244 #define DEBUG_VARIABLE
1245 #endif
1246
1247 /* General macro to extract bit Y of X. */
1248 #define TEST_BIT(X, Y) (((X) >> (Y)) & 1)
1249
1250 /* Get definitions of HOST_WIDE_INT. */
1251 #include "hwint.h"
1252
1253 typedef int sort_r_cmp_fn (const void *, const void *, void *);
1254 void qsort_chk (void *, size_t, size_t, sort_r_cmp_fn *, void *);
1255 void gcc_sort_r (void *, size_t, size_t, sort_r_cmp_fn *, void *);
1256 void gcc_qsort (void *, size_t, size_t, int (*)(const void *, const void *));
1257 void gcc_stablesort (void *, size_t, size_t,
1258 int (*)(const void *, const void *));
1259 void gcc_stablesort_r (void *, size_t, size_t, sort_r_cmp_fn *, void *data);
1260 /* Redirect four-argument qsort calls to gcc_qsort; one-argument invocations
1261 correspond to vec::qsort, and use C qsort internally. */
1262 #define PP_5th(a1, a2, a3, a4, a5, ...) a5
1263 #undef qsort
1264 #define qsort(...) PP_5th (__VA_ARGS__, gcc_qsort, 3, 2, qsort, 0) (__VA_ARGS__)
1265
1266 #define ONE_K 1024
1267 #define ONE_M (ONE_K * ONE_K)
1268 #define ONE_G (ONE_K * ONE_M)
1269
1270 /* Display a number as an integer multiple of either:
1271 - 1024, if said integer is >= to 10 K (in base 2)
1272 - 1024 * 1024, if said integer is >= 10 M in (base 2)
1273 */
1274 #define SIZE_SCALE(x) (((x) < 10 * ONE_K \
1275 ? (x) \
1276 : ((x) < 10 * ONE_M \
1277 ? (x) / ONE_K \
1278 : (x) / ONE_M)))
1279
1280 /* For a given integer, display either:
1281 - the character 'k', if the number is higher than 10 K (in base 2)
1282 but strictly lower than 10 M (in base 2)
1283 - the character 'M' if the number is higher than 10 M (in base2)
1284 - the charcter ' ' if the number is strictly lower than 10 K */
1285 #define SIZE_LABEL(x) ((x) < 10 * ONE_K ? ' ' : ((x) < 10 * ONE_M ? 'k' : 'M'))
1286
1287 /* Display an integer amount as multiple of 1K or 1M (in base 2).
1288 Display the correct unit (either k, M, or ' ') after the amount, as
1289 well. */
1290 #define SIZE_AMOUNT(size) (uint64_t)SIZE_SCALE (size), SIZE_LABEL (size)
1291
1292 /* Format string particle for printing a SIZE_AMOUNT with N being the width
1293 of the number. */
1294 #define PRsa(n) "%" #n PRIu64 "%c"
1295
1296 /* System headers may define NULL to be an integer (e.g. 0L), which cannot be
1297 used safely in certain contexts (e.g. as sentinels). Redefine NULL to
1298 nullptr in order to make it safer. Note that this might confuse system
1299 headers, however, by convention they must not be included after this point.
1300 */
1301 #ifdef __cplusplus
1302 #undef NULL
1303 #define NULL nullptr
1304 #endif
1305
1306 /* Return true if STR string starts with PREFIX. */
1307
1308 static inline bool
startswith(const char * str,const char * prefix)1309 startswith (const char *str, const char *prefix)
1310 {
1311 return strncmp (str, prefix, strlen (prefix)) == 0;
1312 }
1313
1314 /* Return true if STR string ends with SUFFIX. */
1315
1316 static inline bool
endswith(const char * str,const char * suffix)1317 endswith (const char *str, const char *suffix)
1318 {
1319 size_t str_len = strlen (str);
1320 size_t suffix_len = strlen (suffix);
1321 if (str_len < suffix_len)
1322 return false;
1323
1324 return memcmp (str + str_len - suffix_len, suffix, suffix_len) == 0;
1325 }
1326
1327 #endif /* ! GCC_SYSTEM_H */
1328