1/* Get common system includes and various definitions and declarations based
2 on autoconf macros.
3 Copyright (C) 1998-2025 Free Software Foundation, Inc.
4
5This file is part of GCC.
6
7GCC is free software; you can redistribute it and/or modify it under
8the terms of the GNU General Public License as published by the Free
9Software Foundation; either version 3, or (at your option) any later
10version.
11
12GCC is distributed in the hope that it will be useful, but WITHOUT ANY
13WARRANTY; without even the implied warranty of MERCHANTABILITY or
14FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
15for more details.
16
17You should have received a copy of the GNU General Public License
18along 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
103extern "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
110extern 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
117extern 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
124extern 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
131extern 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
138extern 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
145extern 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
152extern 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
159extern 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
166extern 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
173extern 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
182extern 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 C++ standard headers before "safe-ctype.h" to avoid GCC
198 poisoning the ctype macros through safe-ctype.h */
199
200#ifdef __cplusplus
201#if defined (INCLUDE_ALGORITHM) || !defined (HAVE_SWAP_IN_UTILITY)
202# include <algorithm>
203#endif
204#ifdef INCLUDE_LIST
205# include <list>
206#endif
207#ifdef INCLUDE_MAP
208# include <map>
209#endif
210#ifdef INCLUDE_SET
211# include <set>
212#endif
213#ifdef INCLUDE_STRING
214# include <string>
215#endif
216#ifdef INCLUDE_VECTOR
217# include <vector>
218#endif
219#ifdef INCLUDE_ARRAY
220# include <array>
221#endif
222#ifdef INCLUDE_FUNCTIONAL
223# include <functional>
224#endif
225#ifdef INCLUDE_SSTREAM
226# include <sstream>
227#endif
228# include <memory>
229# include <cstring>
230# include <initializer_list>
231# include <new>
232# include <utility>
233# include <type_traits>
234#endif
235
236/* There are an extraordinary number of issues with <ctype.h>.
237 The last straw is that it varies with the locale. Use libiberty's
238 replacement instead. */
239#include "safe-ctype.h"
240
241#include <sys/types.h>
242
243#include <errno.h>
244
245#if !defined (errno) && defined (HAVE_DECL_ERRNO) && !HAVE_DECL_ERRNO
246extern int errno;
247#endif
248
249/* Some of glibc's string inlines cause warnings. Plus we'd rather
250 rely on (and therefore test) GCC's string builtins. */
251#define __NO_STRING_INLINES
252
253#ifdef STRING_WITH_STRINGS
254# include <string.h>
255# include <strings.h>
256#else
257# ifdef HAVE_STRING_H
258# include <string.h>
259# else
260# ifdef HAVE_STRINGS_H
261# include <strings.h>
262# endif
263# endif
264#endif
265
266#ifdef HAVE_STDLIB_H
267# include <stdlib.h>
268#endif
269
270/* When compiling C++ we need to include <cstdlib> as well as <stdlib.h> so
271 that it is processed before we poison "malloc"; otherwise, if a source
272 file uses a standard library header that includes <cstdlib>, we will get
273 an error about 'using std::malloc'. */
274#ifdef __cplusplus
275#include <cstdlib>
276#endif
277
278/* Undef vec_free from AIX stdlib.h header which conflicts with vec.h. */
279#undef vec_free
280
281/* If we don't have an overriding definition, set SUCCESS_EXIT_CODE and
282 FATAL_EXIT_CODE to EXIT_SUCCESS and EXIT_FAILURE respectively,
283 or 0 and 1 if those macros are not defined. */
284#ifndef SUCCESS_EXIT_CODE
285# ifdef EXIT_SUCCESS
286# define SUCCESS_EXIT_CODE EXIT_SUCCESS
287# else
288# define SUCCESS_EXIT_CODE 0
289# endif
290#endif
291
292#ifndef FATAL_EXIT_CODE
293# ifdef EXIT_FAILURE
294# define FATAL_EXIT_CODE EXIT_FAILURE
295# else
296# define FATAL_EXIT_CODE 1
297# endif
298#endif
299
300#define ICE_EXIT_CODE 4
301
302#ifdef HAVE_UNISTD_H
303# include <unistd.h>
304#endif
305
306#ifdef HAVE_SYS_PARAM_H
307# include <sys/param.h>
308/* We use these identifiers later and they appear in some vendor param.h's. */
309# undef PREFETCH
310# undef m_slot
311#endif
312
313#if HAVE_LIMITS_H
314# include <limits.h>
315#endif
316
317/* A macro to determine whether a VALUE lies inclusively within a
318 certain range without evaluating the VALUE more than once. This
319 macro won't warn if the VALUE is unsigned and the LOWER bound is
320 zero, as it would e.g. with "VALUE >= 0 && ...". Note the LOWER
321 bound *is* evaluated twice, and LOWER must not be greater than
322 UPPER. However the bounds themselves can be either positive or
323 negative. */
324#define IN_RANGE(VALUE, LOWER, UPPER) \
325 ((unsigned HOST_WIDE_INT) (VALUE) - (unsigned HOST_WIDE_INT) (LOWER) \
326 <= (unsigned HOST_WIDE_INT) (UPPER) - (unsigned HOST_WIDE_INT) (LOWER))
327
328/* Infrastructure for defining missing _MAX and _MIN macros. Note that
329 macros defined with these cannot be used in #if. */
330
331/* The extra casts work around common compiler bugs. */
332#define INTTYPE_SIGNED(t) (! ((t) 0 < (t) -1))
333/* The outer cast is needed to work around a bug in Cray C 5.0.3.0.
334 It is necessary at least when t == time_t. */
335#define INTTYPE_MINIMUM(t) ((t) (INTTYPE_SIGNED (t) \
336 ? (t) 1 << (sizeof (t) * CHAR_BIT - 1) : (t) 0))
337#define INTTYPE_MAXIMUM(t) ((t) (~ (t) 0 - INTTYPE_MINIMUM (t)))
338
339/* Use that infrastructure to provide a few constants. */
340#ifndef UCHAR_MAX
341# define UCHAR_MAX INTTYPE_MAXIMUM (unsigned char)
342#endif
343
344#ifdef TIME_WITH_SYS_TIME
345# include <sys/time.h>
346# include <time.h>
347#else
348# if HAVE_SYS_TIME_H
349# include <sys/time.h>
350# else
351# ifdef HAVE_TIME_H
352# include <time.h>
353# endif
354# endif
355#endif
356
357#ifdef HAVE_FCNTL_H
358# include <fcntl.h>
359#else
360# ifdef HAVE_SYS_FILE_H
361# include <sys/file.h>
362# endif
363#endif
364
365#ifdef HAVE_SYS_LOCKING_H
366# include <sys/locking.h>
367#endif
368
369#ifndef SEEK_SET
370# define SEEK_SET 0
371# define SEEK_CUR 1
372# define SEEK_END 2
373#endif
374#ifndef F_OK
375# define F_OK 0
376# define X_OK 1
377# define W_OK 2
378# define R_OK 4
379#endif
380#ifndef O_RDONLY
381# define O_RDONLY 0
382#endif
383#ifndef O_WRONLY
384# define O_WRONLY 1
385#endif
386#ifndef O_BINARY
387# define O_BINARY 0
388#endif
389
390/* Some systems define these in, e.g., param.h. We undefine these names
391 here to avoid the warnings. We prefer to use our definitions since we
392 know they are correct. */
393
394#undef MIN
395#undef MAX
396#define MIN(X,Y) ((X) < (Y) ? (X) : (Y))
397#define MAX(X,Y) ((X) > (Y) ? (X) : (Y))
398
399/* Returns the least number N such that N * Y >= X. */
400#define CEIL(x,y) (((x) + (y) - 1) / (y))
401
402/* This macro rounds x up to the y boundary. */
403#define ROUND_UP(x,y) (((x) + (y) - 1) & ~((y) - 1))
404
405/* This macro rounds x down to the y boundary. */
406#define ROUND_DOWN(x,y) ((x) & ~((y) - 1))
407
408#ifdef HAVE_SYS_WAIT_H
409#include <sys/wait.h>
410#endif
411
412#ifndef WIFSIGNALED
413#define WIFSIGNALED(S) (((S) & 0xff) != 0 && ((S) & 0xff) != 0x7f)
414#endif
415#ifndef WTERMSIG
416#define WTERMSIG(S) ((S) & 0x7f)
417#endif
418#ifndef WIFEXITED
419#define WIFEXITED(S) (((S) & 0xff) == 0)
420#endif
421#ifndef WEXITSTATUS
422#define WEXITSTATUS(S) (((S) & 0xff00) >> 8)
423#endif
424#ifndef WSTOPSIG
425#define WSTOPSIG WEXITSTATUS
426#endif
427#ifndef WCOREDUMP
428#define WCOREDUMP(S) ((S) & WCOREFLG)
429#endif
430#ifndef WCOREFLG
431#define WCOREFLG 0200
432#endif
433
434#include <signal.h>
435#if !defined (SIGCHLD) && defined (SIGCLD)
436# define SIGCHLD SIGCLD
437#endif
438
439#ifdef HAVE_SYS_MMAN_H
440# include <sys/mman.h>
441#endif
442
443#ifndef MAP_FAILED
444# define MAP_FAILED ((void *)-1)
445#endif
446
447#if !defined (MAP_ANONYMOUS) && defined (MAP_ANON)
448# define MAP_ANONYMOUS MAP_ANON
449#endif
450
451#ifdef HAVE_SYS_RESOURCE_H
452# include <sys/resource.h>
453#endif
454
455#ifdef HAVE_SYS_TIMES_H
456# include <sys/times.h>
457#endif
458
459/* The HAVE_DECL_* macros are three-state, undefined, 0 or 1. If they
460 are defined to 0 then we must provide the relevant declaration
461 here. These checks will be in the undefined state while configure
462 is running so be careful to test "defined (HAVE_DECL_*)". */
463
464#ifdef __cplusplus
465extern "C" {
466#endif
467
468#if defined (HAVE_DECL_ATOF) && !HAVE_DECL_ATOF
469extern double atof (const char *);
470#endif
471
472#if defined (HAVE_DECL_ATOL) && !HAVE_DECL_ATOL
473extern long atol (const char *);
474#endif
475
476#if defined (HAVE_DECL_FREE) && !HAVE_DECL_FREE
477extern void free (void *);
478#endif
479
480#if defined (HAVE_DECL_GETCWD) && !HAVE_DECL_GETCWD
481extern char *getcwd (char *, size_t);
482#endif
483
484#if defined (HAVE_DECL_GETENV) && !HAVE_DECL_GETENV
485extern char *getenv (const char *);
486#endif
487
488#if defined (HAVE_DECL_GETOPT) && !HAVE_DECL_GETOPT
489extern int getopt (int, char * const *, const char *);
490#endif
491
492#if defined (HAVE_DECL_GETPAGESIZE) && !HAVE_DECL_GETPAGESIZE
493extern int getpagesize (void);
494#endif
495
496#if defined (HAVE_DECL_GETWD) && !HAVE_DECL_GETWD
497extern char *getwd (char *);
498#endif
499
500#if defined (HAVE_DECL_SBRK) && !HAVE_DECL_SBRK
501extern void *sbrk (int);
502#endif
503
504#if defined (HAVE_DECL_SETENV) && !HAVE_DECL_SETENV
505int setenv(const char *, const char *, int);
506#endif
507
508#if defined (HAVE_DECL_STRSTR) && !HAVE_DECL_STRSTR
509extern char *strstr (const char *, const char *);
510#endif
511
512#if defined (HAVE_DECL_STPCPY) && !HAVE_DECL_STPCPY
513extern char *stpcpy (char *, const char *);
514#endif
515
516#if defined (HAVE_DECL_UNSETENV) && !HAVE_DECL_UNSETENV
517int unsetenv(const char *);
518#endif
519
520#if defined (HAVE_DECL_MALLOC) && !HAVE_DECL_MALLOC
521extern void *malloc (size_t);
522#endif
523
524#if defined (HAVE_DECL_CALLOC) && !HAVE_DECL_CALLOC
525extern void *calloc (size_t, size_t);
526#endif
527
528#if defined (HAVE_DECL_REALLOC) && !HAVE_DECL_REALLOC
529extern void *realloc (void *, size_t);
530#endif
531
532#ifdef __cplusplus
533}
534#endif
535
536#ifdef HAVE_STDINT_H
537#include <stdint.h>
538#endif
539
540#ifdef HAVE_INTTYPES_H
541#include <inttypes.h>
542#endif
543
544#ifndef SIZE_MAX
545# define SIZE_MAX INTTYPE_MAXIMUM (size_t)
546#endif
547
548#ifdef __cplusplus
549extern "C" {
550#endif
551
552/* If the system doesn't provide strsignal, we get it defined in
553 libiberty but no declaration is supplied. */
554#if !defined (HAVE_STRSIGNAL) \
555 || (defined (HAVE_DECL_STRSIGNAL) && !HAVE_DECL_STRSIGNAL)
556# ifndef strsignal
557extern const char *strsignal (int);
558# endif
559#endif
560
561#ifdef HAVE_GETRLIMIT
562# if defined (HAVE_DECL_GETRLIMIT) && !HAVE_DECL_GETRLIMIT
563# ifndef getrlimit
564struct rlimit;
565extern int getrlimit (int, struct rlimit *);
566# endif
567# endif
568#endif
569
570#ifdef HAVE_SETRLIMIT
571# if defined (HAVE_DECL_SETRLIMIT) && !HAVE_DECL_SETRLIMIT
572# ifndef setrlimit
573struct rlimit;
574extern int setrlimit (int, const struct rlimit *);
575# endif
576# endif
577#endif
578
579#if defined (HAVE_DECL_ABORT) && !HAVE_DECL_ABORT
580extern void abort (void);
581#endif
582
583#if defined (HAVE_DECL_SNPRINTF) && !HAVE_DECL_SNPRINTF
584extern int snprintf (char *, size_t, const char *, ...);
585#endif
586
587#if defined (HAVE_DECL_VSNPRINTF) && !HAVE_DECL_VSNPRINTF
588extern int vsnprintf (char *, size_t, const char *, va_list);
589#endif
590
591#ifdef __cplusplus
592}
593#endif
594
595/* 1 if we have C99 designated initializers. */
596#if !defined(HAVE_DESIGNATED_INITIALIZERS)
597#ifdef __cplusplus
598#define HAVE_DESIGNATED_INITIALIZERS 0
599#else
600#define HAVE_DESIGNATED_INITIALIZERS \
601 ((GCC_VERSION >= 2007) || (__STDC_VERSION__ >= 199901L))
602#endif
603#endif
604
605#if !defined(HAVE_DESIGNATED_UNION_INITIALIZERS)
606#ifdef __cplusplus
607#define HAVE_DESIGNATED_UNION_INITIALIZERS (GCC_VERSION >= 4007)
608#else
609#define HAVE_DESIGNATED_UNION_INITIALIZERS \
610 ((GCC_VERSION >= 2007) || (__STDC_VERSION__ >= 199901L))
611#endif
612#endif
613
614#if HAVE_SYS_STAT_H
615# include <sys/stat.h>
616#endif
617
618/* Test if something is a normal file. */
619#ifndef S_ISREG
620#define S_ISREG(m) (((m) & S_IFMT) == S_IFREG)
621#endif
622
623/* Test if something is a directory. */
624#ifndef S_ISDIR
625#define S_ISDIR(m) (((m) & S_IFMT) == S_IFDIR)
626#endif
627
628/* Test if something is a character special file. */
629#ifndef S_ISCHR
630#define S_ISCHR(m) (((m) & S_IFMT) == S_IFCHR)
631#endif
632
633/* Test if something is a block special file. */
634#ifndef S_ISBLK
635#define S_ISBLK(m) (((m) & S_IFMT) == S_IFBLK)
636#endif
637
638/* Test if something is a socket. */
639#ifndef S_ISSOCK
640# ifdef S_IFSOCK
641# define S_ISSOCK(m) (((m) & S_IFMT) == S_IFSOCK)
642# else
643# define S_ISSOCK(m) 0
644# endif
645#endif
646
647/* Test if something is a FIFO. */
648#ifndef S_ISFIFO
649# ifdef S_IFIFO
650# define S_ISFIFO(m) (((m) & S_IFMT) == S_IFIFO)
651# else
652# define S_ISFIFO(m) 0
653# endif
654#endif
655
656/* Define well known filenos if the system does not define them. */
657#ifndef STDIN_FILENO
658# define STDIN_FILENO 0
659#endif
660#ifndef STDOUT_FILENO
661# define STDOUT_FILENO 1
662#endif
663#ifndef STDERR_FILENO
664# define STDERR_FILENO 2
665#endif
666
667/* Some systems have mkdir that takes a single argument. */
668#ifdef MKDIR_TAKES_ONE_ARG
669# define mkdir(a,b) mkdir (a)
670#endif
671
672#ifndef HAVE_KILL
673# define kill(p,s) raise (s)
674#endif
675
676/* Provide a way to print an address via printf. */
677#ifndef HOST_PTR_PRINTF
678#define HOST_PTR_PRINTF "%p"
679#endif /* ! HOST_PTR_PRINTF */
680
681/* By default, colon separates directories in a path. */
682#ifndef PATH_SEPARATOR
683#define PATH_SEPARATOR ':'
684#endif
685
686/* Filename handling macros. */
687#include "filenames.h"
688
689/* These should be phased out in favor of IS_DIR_SEPARATOR, where possible. */
690#ifndef DIR_SEPARATOR
691# define DIR_SEPARATOR '/'
692# ifdef HAVE_DOS_BASED_FILE_SYSTEM
693# define DIR_SEPARATOR_2 '\\'
694# endif
695#endif
696
697#if defined (INCLUDE_DLFCN_H) && defined (HAVE_DLFCN_H)
698/* If plugin support is enabled, we could use libdl. */
699#include <dlfcn.h>
700#endif
701
702/* Do not introduce a gmp.h dependency on the build system. */
703#ifndef GENERATOR_FILE
704#include <gmp.h>
705
706class auto_mpz
707{
708public:
709 auto_mpz () { mpz_init (m_mpz); }
710 ~auto_mpz () { mpz_clear (m_mpz); }
711
712 operator mpz_t& () { return m_mpz; }
713 mpz_ptr operator-> () { return m_mpz; }
714
715 auto_mpz (const auto_mpz &) = delete;
716 auto_mpz &operator= (const auto_mpz &) = delete;
717
718#if GCC_VERSION < 4008 || GCC_VERSION >= 5000
719 /* GCC 4.8 and 4.9 don't support this, only fixed in PR62101 for 5.0. */
720 friend void mpz_clear (auto_mpz&) = delete;
721 friend void mpz_init (auto_mpz&) = delete;
722#endif
723
724private:
725 mpz_t m_mpz;
726};
727#endif
728
729/* Get libiberty declarations. */
730#include "libiberty.h"
731
732#undef FFS /* Some systems predefine this symbol; don't let it interfere. */
733#undef FLOAT /* Likewise. */
734#undef ABS /* Likewise. */
735#undef PC /* Likewise. */
736
737/* Provide a default for the HOST_BIT_BUCKET.
738 This suffices for POSIX-like hosts. */
739
740#ifndef HOST_BIT_BUCKET
741#define HOST_BIT_BUCKET "/dev/null"
742#endif
743
744#ifndef offsetof
745#define offsetof(TYPE, MEMBER) ((size_t) &((TYPE *) 0)->MEMBER)
746#endif
747
748/* Various error reporting routines want to use __FUNCTION__. */
749#if (GCC_VERSION < 2007)
750#ifndef __FUNCTION__
751#define __FUNCTION__ "?"
752#endif /* ! __FUNCTION__ */
753#endif
754
755/* __builtin_expect(A, B) evaluates to A, but notifies the compiler that
756 the most likely value of A is B. This feature was added at some point
757 between 2.95 and 3.0. Let's use 3.0 as the lower bound for now. */
758#if (GCC_VERSION < 3000)
759#define __builtin_expect(a, b) (a)
760#endif
761
762#define LIKELY(x) (__builtin_expect ((x), 1))
763#define UNLIKELY(x) (__builtin_expect ((x), 0))
764
765
766#ifdef INCLUDE_MUTEX
767# include <mutex>
768#endif
769
770#ifdef INCLUDE_MALLOC_H
771#if defined(HAVE_MALLINFO) || defined(HAVE_MALLINFO2)
772#include <malloc.h>
773#endif
774#endif
775
776#ifdef INCLUDE_ISL
777#ifdef HAVE_isl
778#include <isl/options.h>
779#include <isl/ctx.h>
780#include <isl/val.h>
781#include <isl/set.h>
782#include <isl/union_set.h>
783#include <isl/map.h>
784#include <isl/union_map.h>
785#include <isl/aff.h>
786#include <isl/constraint.h>
787#include <isl/flow.h>
788#include <isl/ilp.h>
789#include <isl/schedule.h>
790#include <isl/ast_build.h>
791#include <isl/schedule_node.h>
792#include <isl/id.h>
793#include <isl/space.h>
794#endif
795#endif
796
797/* Redefine 'abort' to report an internal error w/o coredump, and
798 reporting the location of the error in the source file.
799 Instead of directly calling 'abort' or 'fancy_abort', GCC code
800 should normally call 'internal_error' with a specific message. */
801extern void fancy_abort (const char *, int, const char *)
802 ATTRIBUTE_NORETURN ATTRIBUTE_COLD;
803#define abort() fancy_abort (__FILE__, __LINE__, __FUNCTION__)
804
805/* Use gcc_assert(EXPR) to test invariants. */
806#if ENABLE_ASSERT_CHECKING
807#define gcc_assert(EXPR) \
808 ((void)(!(EXPR) ? fancy_abort (__FILE__, __LINE__, __FUNCTION__), 0 : 0))
809#elif (GCC_VERSION >= 4005)
810#define gcc_assert(EXPR) \
811 ((void)(UNLIKELY (!(EXPR)) ? __builtin_unreachable (), 0 : 0))
812#else
813/* Include EXPR, so that unused variable warnings do not occur. */
814#define gcc_assert(EXPR) ((void)(0 && (EXPR)))
815#endif
816
817#if CHECKING_P
818#define gcc_checking_assert(EXPR) gcc_assert (EXPR)
819#else
820/* N.B.: in release build EXPR is not evaluated. */
821#define gcc_checking_assert(EXPR) ((void)(0 && (EXPR)))
822#endif
823
824#if GCC_VERSION >= 4000
825#define ALWAYS_INLINE inline __attribute__ ((always_inline))
826#else
827#define ALWAYS_INLINE inline
828#endif
829
830#if GCC_VERSION >= 3004
831#define WARN_UNUSED_RESULT __attribute__ ((__warn_unused_result__))
832#else
833#define WARN_UNUSED_RESULT
834#endif
835
836/* Use gcc_unreachable() to mark unreachable locations (like an
837 unreachable default case of a switch. Do not use gcc_assert(0). */
838#if (GCC_VERSION >= 4005) && !ENABLE_ASSERT_CHECKING
839#define gcc_unreachable() __builtin_unreachable ()
840#else
841#define gcc_unreachable() (fancy_abort (__FILE__, __LINE__, __FUNCTION__))
842#endif
843
844#if GCC_VERSION >= 7000 && defined(__has_attribute)
845# if __has_attribute(fallthrough)
846# define gcc_fallthrough() __attribute__((fallthrough))
847# else
848# define gcc_fallthrough()
849# endif
850#else
851# define gcc_fallthrough()
852#endif
853
854#if GCC_VERSION >= 3001
855#define STATIC_CONSTANT_P(X) (__builtin_constant_p (X) && (X))
856#else
857#define STATIC_CONSTANT_P(X) (false && (X))
858#endif
859
860#ifdef __cplusplus
861#define STATIC_ASSERT(X) \
862 static_assert ((X), #X)
863#else
864#define STATIC_ASSERT(X) \
865 typedef int assertion1[(X) ? 1 : -1] ATTRIBUTE_UNUSED
866#endif
867
868/* Provide a fake boolean type. We make no attempt to use the
869 C99 _Bool, as it may not be available in the bootstrap compiler,
870 and even if it is, it is liable to be buggy.
871 This must be after all inclusion of system headers, as some of
872 them will mess us up. */
873
874#undef TRUE
875#undef FALSE
876
877#ifdef __cplusplus
878 /* Obsolete. */
879# define TRUE true
880# define FALSE false
881#else /* !__cplusplus */
882# undef bool
883# undef true
884# undef false
885
886# define bool unsigned char
887# define true 1
888# define false 0
889
890 /* Obsolete. */
891# define TRUE true
892# define FALSE false
893#endif /* !__cplusplus */
894
895/* Some compilers do not allow the use of unsigned char in bitfields. */
896#define BOOL_BITFIELD unsigned int
897
898/* As the last action in this file, we poison the identifiers that
899 shouldn't be used. Note, luckily gcc-3.0's token-based integrated
900 preprocessor won't trip on poisoned identifiers that arrive from
901 the expansion of macros. E.g. #define strrchr rindex, won't error
902 if rindex is poisoned after this directive is issued and later on
903 strrchr is called.
904
905 Note: We define bypass macros for the few cases where we really
906 want to use the libc memory allocation routines. Otherwise we
907 insist you use the "x" versions from libiberty. */
908
909#define really_call_malloc malloc
910#define really_call_calloc calloc
911#define really_call_realloc realloc
912
913#if defined(FLEX_SCANNER) || defined(YYBISON) || defined(YYBYACC)
914/* Flex and bison use malloc and realloc. Yuk. Note that this means
915 really_call_* cannot be used in a .l or .y file. */
916#define malloc xmalloc
917#define realloc xrealloc
918#endif
919
920#if (GCC_VERSION >= 3000)
921
922/* Note autoconf checks for prototype declarations and includes
923 system.h while doing so. Only poison these tokens if actually
924 compiling gcc, so that the autoconf declaration tests for malloc
925 etc don't spuriously fail. */
926#ifdef IN_GCC
927
928#undef calloc
929#undef strdup
930#undef strndup
931 #pragma GCC poison calloc strdup strndup
932
933#if !defined(FLEX_SCANNER) && !defined(YYBISON)
934#undef malloc
935#undef realloc
936 #pragma GCC poison malloc realloc
937#endif
938
939/* The %m format should be used when GCC's main diagnostic functions
940 supporting %m are available, and xstrerror from libiberty
941 otherwise. */
942#undef strerror
943 #pragma GCC poison strerror
944
945/* loc_t is defined on some systems and too inviting for some
946 programmers to avoid. */
947#undef loc_t
948 #pragma GCC poison loc_t
949
950/* Old target macros that have moved to the target hooks structure. */
951 #pragma GCC poison ASM_OPEN_PAREN ASM_CLOSE_PAREN \
952 FUNCTION_PROLOGUE FUNCTION_EPILOGUE \
953 FUNCTION_END_PROLOGUE FUNCTION_BEGIN_EPILOGUE \
954 DECL_MACHINE_ATTRIBUTES COMP_TYPE_ATTRIBUTES INSERT_ATTRIBUTES \
955 VALID_MACHINE_DECL_ATTRIBUTE VALID_MACHINE_TYPE_ATTRIBUTE \
956 SET_DEFAULT_TYPE_ATTRIBUTES SET_DEFAULT_DECL_ATTRIBUTES \
957 MERGE_MACHINE_TYPE_ATTRIBUTES MERGE_MACHINE_DECL_ATTRIBUTES \
958 MD_INIT_BUILTINS MD_EXPAND_BUILTIN ASM_OUTPUT_CONSTRUCTOR \
959 ASM_OUTPUT_DESTRUCTOR SIGNED_CHAR_SPEC MAX_CHAR_TYPE_SIZE \
960 WCHAR_UNSIGNED UNIQUE_SECTION SELECT_SECTION SELECT_RTX_SECTION \
961 ENCODE_SECTION_INFO STRIP_NAME_ENCODING ASM_GLOBALIZE_LABEL \
962 ASM_OUTPUT_MI_THUNK CONST_COSTS RTX_COSTS DEFAULT_RTX_COSTS \
963 ADDRESS_COST MACHINE_DEPENDENT_REORG ASM_FILE_START ASM_FILE_END \
964 ASM_SIMPLIFY_DWARF_ADDR INIT_TARGET_OPTABS INIT_SUBTARGET_OPTABS \
965 INIT_GOFAST_OPTABS MULSI3_LIBCALL MULDI3_LIBCALL DIVSI3_LIBCALL \
966 DIVDI3_LIBCALL UDIVSI3_LIBCALL UDIVDI3_LIBCALL MODSI3_LIBCALL \
967 MODDI3_LIBCALL UMODSI3_LIBCALL UMODDI3_LIBCALL BUILD_VA_LIST_TYPE \
968 PRETEND_OUTGOING_VARARGS_NAMED STRUCT_VALUE_INCOMING_REGNUM \
969 ASM_OUTPUT_SECTION_NAME PROMOTE_FUNCTION_ARGS PROMOTE_FUNCTION_MODE \
970 STRUCT_VALUE_INCOMING STRICT_ARGUMENT_NAMING \
971 PROMOTE_FUNCTION_RETURN PROMOTE_PROTOTYPES STRUCT_VALUE_REGNUM \
972 SETUP_INCOMING_VARARGS EXPAND_BUILTIN_SAVEREGS \
973 DEFAULT_SHORT_ENUMS SPLIT_COMPLEX_ARGS MD_ASM_CLOBBERS \
974 HANDLE_PRAGMA_REDEFINE_EXTNAME HANDLE_PRAGMA_EXTERN_PREFIX \
975 MUST_PASS_IN_STACK FUNCTION_ARG_PASS_BY_REFERENCE \
976 VECTOR_MODE_SUPPORTED_P TARGET_SUPPORTS_HIDDEN \
977 FUNCTION_ARG_PARTIAL_NREGS ASM_OUTPUT_DWARF_DTPREL \
978 ALLOCATE_INITIAL_VALUE LEGITIMIZE_ADDRESS FRAME_POINTER_REQUIRED \
979 CAN_ELIMINATE TRAMPOLINE_TEMPLATE INITIALIZE_TRAMPOLINE \
980 TRAMPOLINE_ADJUST_ADDRESS STATIC_CHAIN STATIC_CHAIN_INCOMING \
981 RETURN_POPS_ARGS UNITS_PER_SIMD_WORD OVERRIDE_OPTIONS \
982 OPTIMIZATION_OPTIONS CLASS_LIKELY_SPILLED_P \
983 USING_SJLJ_EXCEPTIONS TARGET_UNWIND_INFO \
984 CAN_DEBUG_WITHOUT_FP UNLIKELY_EXECUTED_TEXT_SECTION_NAME \
985 HOT_TEXT_SECTION_NAME LEGITIMATE_CONSTANT_P ALWAYS_STRIP_DOTDOT \
986 OUTPUT_ADDR_CONST_EXTRA SMALL_REGISTER_CLASSES ASM_OUTPUT_IDENT \
987 ASM_BYTE_OP MEMBER_TYPE_FORCES_BLK LIBGCC2_HAS_SF_MODE \
988 LIBGCC2_HAS_DF_MODE LIBGCC2_HAS_XF_MODE LIBGCC2_HAS_TF_MODE \
989 CLEAR_BY_PIECES_P MOVE_BY_PIECES_P SET_BY_PIECES_P \
990 STORE_BY_PIECES_P TARGET_FLT_EVAL_METHOD \
991 HARD_REGNO_CALL_PART_CLOBBERED HARD_REGNO_MODE_OK \
992 MODES_TIEABLE_P FUNCTION_ARG_PADDING SLOW_UNALIGNED_ACCESS \
993 HARD_REGNO_NREGS SECONDARY_MEMORY_NEEDED_MODE \
994 SECONDARY_MEMORY_NEEDED CANNOT_CHANGE_MODE_CLASS \
995 TRULY_NOOP_TRUNCATION FUNCTION_ARG_OFFSET CONSTANT_ALIGNMENT \
996 STARTING_FRAME_OFFSET FLOAT_TYPE_SIZE DOUBLE_TYPE_SIZE \
997 LONG_DOUBLE_TYPE_SIZE
998
999/* Target macros only used for code built for the target, that have
1000 moved to libgcc-tm.h or have never been present elsewhere. */
1001 #pragma GCC poison DECLARE_LIBRARY_RENAMES LIBGCC2_GNU_PREFIX \
1002 MD_UNWIND_SUPPORT MD_FROB_UPDATE_CONTEXT ENABLE_EXECUTE_STACK \
1003 REG_VALUE_IN_UNWIND_CONTEXT ASSUME_EXTENDED_UNWIND_CONTEXT
1004
1005/* Other obsolete target macros, or macros that used to be in target
1006 headers and were not used, and may be obsolete or may never have
1007 been used. */
1008 #pragma GCC poison INT_ASM_OP ASM_OUTPUT_EH_REGION_BEG CPP_PREDEFINES \
1009 ASM_OUTPUT_EH_REGION_END ASM_OUTPUT_LABELREF_AS_INT SMALL_STACK \
1010 DOESNT_NEED_UNWINDER EH_TABLE_LOOKUP OBJC_SELECTORS_WITHOUT_LABELS \
1011 OMIT_EH_TABLE EASY_DIV_EXPR IMPLICIT_FIX_EXPR \
1012 LONGJMP_RESTORE_FROM_STACK MAX_INT_TYPE_SIZE ASM_IDENTIFY_GCC \
1013 STDC_VALUE TRAMPOLINE_ALIGN ASM_IDENTIFY_GCC_AFTER_SOURCE \
1014 SLOW_ZERO_EXTEND SUBREG_REGNO_OFFSET DWARF_LINE_MIN_INSTR_LENGTH \
1015 TRADITIONAL_RETURN_FLOAT NO_BUILTIN_SIZE_TYPE \
1016 NO_BUILTIN_PTRDIFF_TYPE NO_BUILTIN_WCHAR_TYPE NO_BUILTIN_WINT_TYPE \
1017 BLOCK_PROFILER BLOCK_PROFILER_CODE FUNCTION_BLOCK_PROFILER \
1018 FUNCTION_BLOCK_PROFILER_EXIT MACHINE_STATE_SAVE \
1019 MACHINE_STATE_RESTORE SCCS_DIRECTIVE SECTION_ASM_OP BYTEORDER \
1020 ASM_OUTPUT_DEFINE_LABEL_DIFFERENCE_SYMBOL HOST_WORDS_BIG_ENDIAN \
1021 OBJC_PROLOGUE ALLOCATE_TRAMPOLINE HANDLE_PRAGMA ROUND_TYPE_SIZE \
1022 ROUND_TYPE_SIZE_UNIT CONST_SECTION_ASM_OP CRT_GET_RFIB_TEXT \
1023 INSN_CACHE_DEPTH INSN_CACHE_SIZE \
1024 INSN_CACHE_LINE_WIDTH INIT_SECTION_PREAMBLE NEED_ATEXIT ON_EXIT \
1025 EXIT_BODY OBJECT_FORMAT_ROSE MULTIBYTE_CHARS MAP_CHARACTER \
1026 LIBGCC_NEEDS_DOUBLE FINAL_PRESCAN_LABEL DEFAULT_CALLER_SAVES \
1027 LOAD_ARGS_REVERSED MAX_INTEGER_COMPUTATION_MODE \
1028 CONVERT_HARD_REGISTER_TO_SSA_P ASM_OUTPUT_MAIN_SOURCE_FILENAME \
1029 FIRST_INSN_ADDRESS TEXT_SECTION SHARED_BSS_SECTION_ASM_OP \
1030 PROMOTED_MODE EXPAND_BUILTIN_VA_END \
1031 LINKER_DOES_NOT_WORK_WITH_DWARF2 FUNCTION_ARG_KEEP_AS_REFERENCE \
1032 GIV_SORT_CRITERION MAX_LONG_TYPE_SIZE MAX_LONG_DOUBLE_TYPE_SIZE \
1033 MAX_WCHAR_TYPE_SIZE SHARED_SECTION_ASM_OP INTEGRATE_THRESHOLD \
1034 FINAL_REG_PARM_STACK_SPACE MAYBE_REG_PARM_STACK_SPACE \
1035 TRADITIONAL_PIPELINE_INTERFACE DFA_PIPELINE_INTERFACE \
1036 BUILTIN_SETJMP_FRAME_VALUE \
1037 SUNOS4_SHARED_LIBRARIES PROMOTE_FOR_CALL_ONLY \
1038 SPACE_AFTER_L_OPTION NO_RECURSIVE_FUNCTION_CSE \
1039 DEFAULT_MAIN_RETURN TARGET_MEM_FUNCTIONS EXPAND_BUILTIN_VA_ARG \
1040 COLLECT_PARSE_FLAG DWARF2_GENERATE_TEXT_SECTION_LABEL WINNING_GDB \
1041 ASM_OUTPUT_FILENAME ASM_OUTPUT_SOURCE_LINE FILE_NAME_JOINER \
1042 GDB_INV_REF_REGPARM_STABS_LETTER \
1043 PUT_SDB_SRC_FILE STABS_GCC_MARKER SDB_GENERATE_FAKE \
1044 NON_SAVING_SETJMP TARGET_LATE_RTL_PROLOGUE_EPILOGUE \
1045 CASE_DROPS_THROUGH TARGET_BELL TARGET_BS TARGET_CR TARGET_DIGIT0 \
1046 TARGET_ESC TARGET_FF TARGET_NEWLINE TARGET_TAB TARGET_VT \
1047 LINK_LIBGCC_SPECIAL DONT_ACCESS_GBLS_AFTER_EPILOGUE \
1048 TARGET_OPTIONS TARGET_SWITCHES EXTRA_CC_MODES FINALIZE_PIC \
1049 PREDICATE_CODES SPECIAL_MODE_PREDICATES UNALIGNED_WORD_ASM_OP \
1050 EXTRA_SECTIONS EXTRA_SECTION_FUNCTIONS READONLY_DATA_SECTION \
1051 TARGET_ASM_EXCEPTION_SECTION TARGET_ASM_EH_FRAME_SECTION \
1052 SMALL_ARG_MAX ASM_OUTPUT_SHARED_BSS ASM_OUTPUT_SHARED_COMMON \
1053 ASM_OUTPUT_SHARED_LOCAL ASM_MAKE_LABEL_LINKONCE \
1054 STACK_CHECK_PROBE_INTERVAL STACK_CHECK_PROBE_LOAD \
1055 ORDER_REGS_FOR_LOCAL_ALLOC FUNCTION_OUTGOING_VALUE \
1056 ASM_DECLARE_CONSTANT_NAME MODIFY_TARGET_NAME SWITCHES_NEED_SPACES \
1057 SWITCH_CURTAILS_COMPILATION SWITCH_TAKES_ARG WORD_SWITCH_TAKES_ARG \
1058 TARGET_OPTION_TRANSLATE_TABLE HANDLE_PRAGMA_PACK_PUSH_POP \
1059 HANDLE_SYSV_PRAGMA HANDLE_PRAGMA_WEAK CONDITIONAL_REGISTER_USAGE \
1060 FUNCTION_ARG_BOUNDARY MUST_USE_SJLJ_EXCEPTIONS US_SOFTWARE_GOFAST \
1061 USING_SVR4_H SVR4_ASM_SPEC FUNCTION_ARG FUNCTION_ARG_ADVANCE \
1062 FUNCTION_INCOMING_ARG IRA_COVER_CLASSES TARGET_VERSION \
1063 MACHINE_TYPE TARGET_HAS_TARGETCM ASM_OUTPUT_BSS \
1064 SETJMP_VIA_SAVE_AREA FORBIDDEN_INC_DEC_CLASSES \
1065 PREFERRED_OUTPUT_RELOAD_CLASS SYSTEM_INCLUDE_DIR \
1066 STANDARD_INCLUDE_DIR STANDARD_INCLUDE_COMPONENT \
1067 LINK_ELIMINATE_DUPLICATE_LDIRECTORIES MIPS_DEBUGGING_INFO \
1068 IDENT_ASM_OP ALL_COP_ADDITIONAL_REGISTER_NAMES \
1069 RANGE_TEST_NON_SHORT_CIRCUIT \
1070 REAL_VALUE_TRUNCATE REVERSE_CONDEXEC_PREDICATES_P \
1071 TARGET_ALIGN_ANON_BITFIELDS TARGET_NARROW_VOLATILE_BITFIELDS \
1072 IDENT_ASM_OP UNALIGNED_SHORT_ASM_OP UNALIGNED_INT_ASM_OP \
1073 UNALIGNED_LONG_ASM_OP UNALIGNED_DOUBLE_INT_ASM_OP \
1074 USE_COMMON_FOR_ONE_ONLY IFCVT_EXTRA_FIELDS IFCVT_INIT_EXTRA_FIELDS \
1075 CASE_USE_BIT_TESTS FIXUNS_TRUNC_LIKE_FIX_TRUNC \
1076 GO_IF_MODE_DEPENDENT_ADDRESS DELAY_SLOTS_FOR_EPILOGUE \
1077 ELIGIBLE_FOR_EPILOGUE_DELAY TARGET_C99_FUNCTIONS TARGET_HAS_SINCOS \
1078 REG_CLASS_FROM_LETTER CONST_OK_FOR_LETTER_P \
1079 CONST_DOUBLE_OK_FOR_LETTER_P EXTRA_CONSTRAINT \
1080 REG_CLASS_FROM_CONSTRAINT REG_CLASS_FOR_CONSTRAINT \
1081 EXTRA_CONSTRAINT_STR EXTRA_MEMORY_CONSTRAINT \
1082 EXTRA_ADDRESS_CONSTRAINT CONST_DOUBLE_OK_FOR_CONSTRAINT_P \
1083 CALLER_SAVE_PROFITABLE LARGEST_EXPONENT_IS_NORMAL \
1084 ROUND_TOWARDS_ZERO SF_SIZE DF_SIZE XF_SIZE TF_SIZE LIBGCC2_TF_CEXT \
1085 LIBGCC2_LONG_DOUBLE_TYPE_SIZE STRUCT_VALUE \
1086 EH_FRAME_IN_DATA_SECTION TARGET_FLT_EVAL_METHOD_NON_DEFAULT \
1087 JCR_SECTION_NAME TARGET_USE_JCR_SECTION SDB_DEBUGGING_INFO \
1088 SDB_DEBUG NO_IMPLICIT_EXTERN_C NOTICE_UPDATE_CC \
1089 CC_STATUS_MDEP_INIT CC_STATUS_MDEP CC_STATUS SLOW_SHORT_ACCESS
1090
1091/* Hooks that are no longer used. */
1092 #pragma GCC poison LANG_HOOKS_FUNCTION_MARK LANG_HOOKS_FUNCTION_FREE \
1093 LANG_HOOKS_MARK_TREE LANG_HOOKS_INSERT_DEFAULT_ATTRIBUTES \
1094 LANG_HOOKS_TREE_INLINING_ESTIMATE_NUM_INSNS \
1095 LANG_HOOKS_PUSHLEVEL LANG_HOOKS_SET_BLOCK \
1096 LANG_HOOKS_MAYBE_BUILD_CLEANUP LANG_HOOKS_UPDATE_DECL_AFTER_SAVING \
1097 LANG_HOOKS_POPLEVEL LANG_HOOKS_TRUTHVALUE_CONVERSION \
1098 TARGET_PROMOTE_FUNCTION_ARGS TARGET_PROMOTE_FUNCTION_RETURN \
1099 LANG_HOOKS_MISSING_ARGUMENT LANG_HOOKS_HASH_TYPES \
1100 TARGET_HANDLE_OFAST TARGET_OPTION_OPTIMIZATION \
1101 TARGET_IRA_COVER_CLASSES TARGET_HELP \
1102 TARGET_HANDLE_PRAGMA_EXTERN_PREFIX \
1103 TARGET_VECTORIZE_BUILTIN_MUL_WIDEN_EVEN \
1104 TARGET_VECTORIZE_BUILTIN_MUL_WIDEN_ODD \
1105 TARGET_MD_ASM_CLOBBERS TARGET_RELAXED_ORDERING \
1106 EXTENDED_SDB_BASIC_TYPES TARGET_INVALID_PARAMETER_TYPE \
1107 TARGET_INVALID_RETURN_TYPE
1108
1109/* Arrays that were deleted in favor of a functional interface. */
1110 #pragma GCC poison built_in_decls implicit_built_in_decls
1111
1112/* Hooks into libgcc2. */
1113 #pragma GCC poison LIBGCC2_DOUBLE_TYPE_SIZE LIBGCC2_WORDS_BIG_ENDIAN \
1114 LIBGCC2_FLOAT_WORDS_BIG_ENDIAN
1115
1116/* Miscellaneous macros that are no longer used. */
1117 #pragma GCC poison USE_MAPPED_LOCATION GET_ENVIRONMENT
1118
1119/* Libiberty macros that are no longer used in GCC. */
1120#undef ANSI_PROTOTYPES
1121#undef PTR_CONST
1122#undef LONG_DOUBLE
1123#undef VPARAMS
1124#undef VA_OPEN
1125#undef VA_FIXEDARG
1126#undef VA_CLOSE
1127#undef VA_START
1128 #pragma GCC poison ANSI_PROTOTYPES PTR_CONST LONG_DOUBLE VPARAMS VA_OPEN \
1129 VA_FIXEDARG VA_CLOSE VA_START
1130#endif /* IN_GCC */
1131
1132/* Front ends should never have to include middle-end headers. Enforce
1133 this by poisoning the header double-include protection defines. */
1134#ifdef IN_GCC_FRONTEND
1135#pragma GCC poison GCC_RTL_H GCC_EXCEPT_H GCC_EXPR_H
1136#endif
1137
1138/* Note: not all uses of the `index' token (e.g. variable names and
1139 structure members) have been eliminated. */
1140#undef bcopy
1141#undef bzero
1142#undef bcmp
1143#undef rindex
1144 #pragma GCC poison bcopy bzero bcmp rindex
1145
1146/* Poison ENABLE_CHECKING macro that should be replaced with
1147 'if (flag_checking)', or with CHECKING_P macro. */
1148#pragma GCC poison ENABLE_CHECKING
1149
1150#endif /* GCC >= 3.0 */
1151
1152/* This macro allows casting away const-ness to pass -Wcast-qual
1153 warnings. DO NOT USE THIS UNLESS YOU REALLY HAVE TO! It should
1154 only be used in certain specific cases. One valid case is where
1155 the C standard definitions or prototypes force you to. E.g. if you
1156 need to free a const object, or if you pass a const string to
1157 execv, et al. Another valid use would be in an allocation function
1158 that creates const objects that need to be initialized. In some
1159 cases we have non-const functions that return the argument
1160 (e.g. next_nonnote_insn). Rather than create const shadow
1161 functions, we can cast away const-ness in calling these interfaces
1162 if we're careful to verify that the called function does indeed not
1163 modify its argument and the return value is only used in a const
1164 context. (This can be somewhat dangerous as these assumptions can
1165 change after the fact). Beyond these uses, most other cases of
1166 using this macro should be viewed with extreme caution. */
1167
1168#ifdef __cplusplus
1169#define CONST_CAST2(TOTYPE,FROMTYPE,X) (const_cast<TOTYPE> (X))
1170#else
1171#if defined(__GNUC__) && GCC_VERSION > 4000
1172/* GCC 4.0.x has a bug where it may ICE on this expression,
1173 so does GCC 3.4.x (PR17436). */
1174#define CONST_CAST2(TOTYPE,FROMTYPE,X) ((__extension__(union {FROMTYPE _q; TOTYPE _nq;})(X))._nq)
1175#elif defined(__GNUC__)
1176inline char *
1177helper_const_non_const_cast (const char *p)
1178{
1179 union {
1180 const char *const_c;
1181 char *c;
1182 } val;
1183 val.const_c = p;
1184 return val.c;
1185}
1186
1187#define CONST_CAST2(TOTYPE,FROMTYPE,X) \
1188 ((TOTYPE) helper_const_non_const_cast ((const char *) (FROMTYPE) (X)))
1189#else
1190#define CONST_CAST2(TOTYPE,FROMTYPE,X) ((TOTYPE)(FROMTYPE)(X))
1191#endif
1192#endif
1193#define CONST_CAST(TYPE,X) CONST_CAST2 (TYPE, const TYPE, (X))
1194#define CONST_CAST_TREE(X) CONST_CAST (union tree_node *, (X))
1195#define CONST_CAST_RTX(X) CONST_CAST (struct rtx_def *, (X))
1196#define CONST_CAST_RTX_INSN(X) CONST_CAST (struct rtx_insn *, (X))
1197#define CONST_CAST_BB(X) CONST_CAST (struct basic_block_def *, (X))
1198#define CONST_CAST_GIMPLE(X) CONST_CAST (gimple *, (X))
1199
1200/* Activate certain diagnostics as warnings (not errors via the
1201 -Werror flag). */
1202#if GCC_VERSION >= 4003
1203/* If asserts are disabled, activate -Wuninitialized as a warning (not
1204 an error/-Werror). */
1205#ifndef ENABLE_ASSERT_CHECKING
1206#pragma GCC diagnostic warning "-Wuninitialized"
1207#endif
1208#endif
1209
1210#ifdef ENABLE_VALGRIND_ANNOTATIONS
1211#include <valgrind/memcheck.h>
1212#else
1213/* VALGRIND_DISCARD unregisters the given block handle,
1214 but our code misuses it for discarding annotations. */
1215#define VALGRIND_DISCARD(x)
1216#endif
1217
1218/* Macros to temporarily ignore some warnings. */
1219#if GCC_VERSION >= 6000
1220#define GCC_DIAGNOSTIC_STRINGIFY(x) #x
1221#define GCC_DIAGNOSTIC_PUSH_IGNORED(x) \
1222 _Pragma ("GCC diagnostic push") \
1223 _Pragma (GCC_DIAGNOSTIC_STRINGIFY (GCC diagnostic ignored #x))
1224#define GCC_DIAGNOSTIC_POP _Pragma ("GCC diagnostic pop")
1225#else
1226#define GCC_DIAGNOSTIC_PUSH_IGNORED(x)
1227#define GCC_DIAGNOSTIC_POP
1228#endif
1229
1230/* In LTO -fwhole-program build we still want to keep the debug functions available
1231 for debugger. Mark them as used to prevent removal. */
1232#if (GCC_VERSION > 4000)
1233#define DEBUG_FUNCTION __attribute__ ((__used__))
1234#define DEBUG_VARIABLE __attribute__ ((__used__))
1235#else
1236#define DEBUG_FUNCTION
1237#define DEBUG_VARIABLE
1238#endif
1239
1240/* General macro to extract bit Y of X. */
1241#define TEST_BIT(X, Y) (((X) >> (Y)) & 1)
1242
1243/* Get definitions of HOST_WIDE_INT. */
1244#include "hwint.h"
1245
1246typedef int sort_r_cmp_fn (const void *, const void *, void *);
1247void qsort_chk (void *, size_t, size_t, sort_r_cmp_fn *, void *);
1248void gcc_sort_r (void *, size_t, size_t, sort_r_cmp_fn *, void *);
1249void gcc_qsort (void *, size_t, size_t, int (*)(const void *, const void *));
1250void gcc_stablesort (void *, size_t, size_t,
1251 int (*)(const void *, const void *));
1252void gcc_stablesort_r (void *, size_t, size_t, sort_r_cmp_fn *, void *data);
1253/* Redirect four-argument qsort calls to gcc_qsort; one-argument invocations
1254 correspond to vec::qsort, and use C qsort internally. */
1255#define PP_5th(a1, a2, a3, a4, a5, ...) a5
1256#undef qsort
1257#define qsort(...) PP_5th (__VA_ARGS__, gcc_qsort, 3, 2, qsort, 0) (__VA_ARGS__)
1258
1259#define ONE_K 1024
1260#define ONE_M (ONE_K * ONE_K)
1261#define ONE_G (ONE_K * ONE_M)
1262
1263/* Display a number as an integer multiple of either:
1264 - 1024, if said integer is >= to 10 K (in base 2)
1265 - 1024 * 1024, if said integer is >= 10 M in (base 2)
1266 */
1267#define SIZE_SCALE(x) (((x) < 10 * ONE_K \
1268 ? (x) \
1269 : ((x) < 10 * ONE_M \
1270 ? (x) / ONE_K \
1271 : (x) / ONE_M)))
1272
1273/* For a given integer, display either:
1274 - the character 'k', if the number is higher than 10 K (in base 2)
1275 but strictly lower than 10 M (in base 2)
1276 - the character 'M' if the number is higher than 10 M (in base2)
1277 - the charcter ' ' if the number is strictly lower than 10 K */
1278#define SIZE_LABEL(x) ((x) < 10 * ONE_K ? ' ' : ((x) < 10 * ONE_M ? 'k' : 'M'))
1279
1280/* Display an integer amount as multiple of 1K or 1M (in base 2).
1281 Display the correct unit (either k, M, or ' ') after the amount, as
1282 well. */
1283#define SIZE_AMOUNT(size) (uint64_t)SIZE_SCALE (size), SIZE_LABEL (size)
1284
1285/* Format string particle for printing a SIZE_AMOUNT with N being the width
1286 of the number. */
1287#define PRsa(n) "%" #n PRIu64 "%c"
1288
1289/* System headers may define NULL to be an integer (e.g. 0L), which cannot be
1290 used safely in certain contexts (e.g. as sentinels). Redefine NULL to
1291 nullptr in order to make it safer. Note that this might confuse system
1292 headers, however, by convention they must not be included after this point.
1293*/
1294#ifdef __cplusplus
1295#undef NULL
1296#define NULL nullptr
1297#endif
1298
1299/* Workaround clang on PowerPC which has vec_step as reserved keyword
1300 rather than function-like macro defined in <altivec.h>. See PR114369. */
1301#if defined(__clang__) && defined(__powerpc__)
1302#define vec_step vec_step_
1303#endif
1304
1305/* Return true if STR string starts with PREFIX. */
1306
1307inline bool
1308startswith (const char *str, const char *prefix)
1309{
1310 return strncmp (s1: str, s2: prefix, n: strlen (s: prefix)) == 0;
1311}
1312
1313/* Return true if STR string ends with SUFFIX. */
1314
1315inline bool
1316endswith (const char *str, const char *suffix)
1317{
1318 size_t str_len = strlen (s: str);
1319 size_t suffix_len = strlen (s: suffix);
1320 if (str_len < suffix_len)
1321 return false;
1322
1323 return memcmp (s1: str + str_len - suffix_len, s2: suffix, n: suffix_len) == 0;
1324}
1325
1326#endif /* ! GCC_SYSTEM_H */
1327

source code of gcc/system.h