]>
gcc.gnu.org Git - gcc.git/blob - gcc/system.h
1 /* Get common system includes and various definitions and declarations based
3 Copyright (C) 1998-2014 Free Software Foundation, Inc.
5 This file is part of GCC.
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
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
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/>. */
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
29 #define __STDC_FORMAT_MACROS
31 /* We must include stdarg.h before stdio.h. */
36 # define va_copy(d,s) __va_copy (d, s)
38 # define va_copy(d,s) ((d) = (s))
48 /* Define a generic NULL if one hasn't already been defined. */
53 /* Use the unlocked open routines from libiberty. */
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. */
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)
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).
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.
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). */
79 #if defined HAVE_DECL_PUTC_UNLOCKED && HAVE_DECL_PUTC_UNLOCKED
81 # ifdef HAVE_PUTC_UNLOCKED
83 # define putc(C, Stream) putc_unlocked (C, Stream)
85 # ifdef HAVE_PUTCHAR_UNLOCKED
87 # define putchar(C) putchar_unlocked (C)
89 # ifdef HAVE_GETC_UNLOCKED
91 # define getc(Stream) getc_unlocked (Stream)
93 # ifdef HAVE_GETCHAR_UNLOCKED
95 # define getchar() getchar_unlocked ()
97 # ifdef HAVE_FPUTC_UNLOCKED
99 # define fputc(C, Stream) fputc_unlocked (C, Stream)
106 # ifdef HAVE_CLEARERR_UNLOCKED
108 # define clearerr(Stream) clearerr_unlocked (Stream)
109 # if defined (HAVE_DECL_CLEARERR_UNLOCKED) && !HAVE_DECL_CLEARERR_UNLOCKED
110 extern void clearerr_unlocked (FILE *);
113 # ifdef HAVE_FEOF_UNLOCKED
115 # define feof(Stream) feof_unlocked (Stream)
116 # if defined (HAVE_DECL_FEOF_UNLOCKED) && !HAVE_DECL_FEOF_UNLOCKED
117 extern int feof_unlocked (FILE *);
120 # ifdef HAVE_FILENO_UNLOCKED
122 # define fileno(Stream) fileno_unlocked (Stream)
123 # if defined (HAVE_DECL_FILENO_UNLOCKED) && !HAVE_DECL_FILENO_UNLOCKED
124 extern int fileno_unlocked (FILE *);
127 # ifdef HAVE_FFLUSH_UNLOCKED
129 # define fflush(Stream) fflush_unlocked (Stream)
130 # if defined (HAVE_DECL_FFLUSH_UNLOCKED) && !HAVE_DECL_FFLUSH_UNLOCKED
131 extern int fflush_unlocked (FILE *);
134 # ifdef HAVE_FGETC_UNLOCKED
136 # define fgetc(Stream) fgetc_unlocked (Stream)
137 # if defined (HAVE_DECL_FGETC_UNLOCKED) && !HAVE_DECL_FGETC_UNLOCKED
138 extern int fgetc_unlocked (FILE *);
141 # ifdef HAVE_FGETS_UNLOCKED
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 *);
148 # ifdef HAVE_FPUTS_UNLOCKED
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 *);
155 # ifdef HAVE_FERROR_UNLOCKED
157 # define ferror(Stream) ferror_unlocked (Stream)
158 # if defined (HAVE_DECL_FERROR_UNLOCKED) && !HAVE_DECL_FERROR_UNLOCKED
159 extern int ferror_unlocked (FILE *);
162 # ifdef HAVE_FREAD_UNLOCKED
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 *);
169 # ifdef HAVE_FWRITE_UNLOCKED
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 *);
176 # ifdef HAVE_FPRINTF_UNLOCKED
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 *, ...);
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
197 /* There are an extraordinary number of issues with <ctype.h>.
198 The last straw is that it varies with the locale. Use libiberty's
199 replacement instead. */
200 #include "safe-ctype.h"
202 #include <sys/types.h>
206 #if !defined (errno) && defined (HAVE_DECL_ERRNO) && !HAVE_DECL_ERRNO
214 /* Some of glibc's string inlines cause warnings. Plus we'd rather
215 rely on (and therefore test) GCC's string builtins. */
216 #define __NO_STRING_INLINES
218 #ifdef STRING_WITH_STRINGS
220 # include <strings.h>
222 # ifdef HAVE_STRING_H
225 # ifdef HAVE_STRINGS_H
226 # include <strings.h>
235 /* When compiling C++ we need to include <cstdlib> as well as <stdlib.h> so
236 that it is processed before we poison "malloc"; otherwise, if a source
237 file uses a standard library header that includes <cstdlib>, we will get
238 an error about 'using std::malloc'. */
243 /* Undef vec_free from AIX stdlib.h header which conflicts with vec.h. */
246 /* If we don't have an overriding definition, set SUCCESS_EXIT_CODE and
247 FATAL_EXIT_CODE to EXIT_SUCCESS and EXIT_FAILURE respectively,
248 or 0 and 1 if those macros are not defined. */
249 #ifndef SUCCESS_EXIT_CODE
251 # define SUCCESS_EXIT_CODE EXIT_SUCCESS
253 # define SUCCESS_EXIT_CODE 0
257 #ifndef FATAL_EXIT_CODE
259 # define FATAL_EXIT_CODE EXIT_FAILURE
261 # define FATAL_EXIT_CODE 1
265 #define ICE_EXIT_CODE 4
271 #ifdef HAVE_SYS_PARAM_H
272 # include <sys/param.h>
273 /* We use these identifiers later and they appear in some vendor param.h's. */
282 /* A macro to determine whether a VALUE lies inclusively within a
283 certain range without evaluating the VALUE more than once. This
284 macro won't warn if the VALUE is unsigned and the LOWER bound is
285 zero, as it would e.g. with "VALUE >= 0 && ...". Note the LOWER
286 bound *is* evaluated twice, and LOWER must not be greater than
287 UPPER. However the bounds themselves can be either positive or
289 #define IN_RANGE(VALUE, LOWER, UPPER) \
290 ((unsigned HOST_WIDE_INT) (VALUE) - (unsigned HOST_WIDE_INT) (LOWER) \
291 <= (unsigned HOST_WIDE_INT) (UPPER) - (unsigned HOST_WIDE_INT) (LOWER))
293 /* Infrastructure for defining missing _MAX and _MIN macros. Note that
294 macros defined with these cannot be used in #if. */
296 /* The extra casts work around common compiler bugs. */
297 #define INTTYPE_SIGNED(t) (! ((t) 0 < (t) -1))
298 /* The outer cast is needed to work around a bug in Cray C 5.0.3.0.
299 It is necessary at least when t == time_t. */
300 #define INTTYPE_MINIMUM(t) ((t) (INTTYPE_SIGNED (t) \
301 ? ~ (t) 0 << (sizeof (t) * CHAR_BIT - 1) : (t) 0))
302 #define INTTYPE_MAXIMUM(t) ((t) (~ (t) 0 - INTTYPE_MINIMUM (t)))
304 /* Use that infrastructure to provide a few constants. */
306 # define UCHAR_MAX INTTYPE_MAXIMUM (unsigned char)
309 #ifdef TIME_WITH_SYS_TIME
310 # include <sys/time.h>
314 # include <sys/time.h>
325 # ifdef HAVE_SYS_FILE_H
326 # include <sys/file.h>
351 /* Some systems define these in, e.g., param.h. We undefine these names
352 here to avoid the warnings. We prefer to use our definitions since we
353 know they are correct. */
357 #define MIN(X,Y) ((X) < (Y) ? (X) : (Y))
358 #define MAX(X,Y) ((X) > (Y) ? (X) : (Y))
360 /* Returns the least number N such that N * Y >= X. */
361 #define CEIL(x,y) (((x) + (y) - 1) / (y))
363 #ifdef HAVE_SYS_WAIT_H
364 #include <sys/wait.h>
368 #define WIFSIGNALED(S) (((S) & 0xff) != 0 && ((S) & 0xff) != 0x7f)
371 #define WTERMSIG(S) ((S) & 0x7f)
374 #define WIFEXITED(S) (((S) & 0xff) == 0)
377 #define WEXITSTATUS(S) (((S) & 0xff00) >> 8)
380 #define WSTOPSIG WEXITSTATUS
383 #define WCOREDUMP(S) ((S) & WCOREFLG)
386 #define WCOREFLG 0200
390 #if !defined (SIGCHLD) && defined (SIGCLD)
391 # define SIGCHLD SIGCLD
394 #ifdef HAVE_SYS_MMAN_H
395 # include <sys/mman.h>
399 # define MAP_FAILED ((void *)-1)
402 #if !defined (MAP_ANONYMOUS) && defined (MAP_ANON)
403 # define MAP_ANONYMOUS MAP_ANON
406 #ifdef HAVE_SYS_RESOURCE_H
407 # include <sys/resource.h>
410 #ifdef HAVE_SYS_TIMES_H
411 # include <sys/times.h>
414 /* The HAVE_DECL_* macros are three-state, undefined, 0 or 1. If they
415 are defined to 0 then we must provide the relevant declaration
416 here. These checks will be in the undefined state while configure
417 is running so be careful to test "defined (HAVE_DECL_*)". */
423 #if defined (HAVE_DECL_ATOF) && !HAVE_DECL_ATOF
424 extern double atof (const char *);
427 #if defined (HAVE_DECL_ATOL) && !HAVE_DECL_ATOL
428 extern long atol (const char *);
431 #if defined (HAVE_DECL_FREE) && !HAVE_DECL_FREE
432 extern void free (void *);
435 #if defined (HAVE_DECL_GETCWD) && !HAVE_DECL_GETCWD
436 extern char *getcwd (char *, size_t);
439 #if defined (HAVE_DECL_GETENV) && !HAVE_DECL_GETENV
440 extern char *getenv (const char *);
443 #if defined (HAVE_DECL_GETOPT) && !HAVE_DECL_GETOPT
444 extern int getopt (int, char * const *, const char *);
447 #if defined (HAVE_DECL_GETPAGESIZE) && !HAVE_DECL_GETPAGESIZE
448 extern int getpagesize (void);
451 #if defined (HAVE_DECL_GETWD) && !HAVE_DECL_GETWD
452 extern char *getwd (char *);
455 #if defined (HAVE_DECL_SBRK) && !HAVE_DECL_SBRK
456 extern void *sbrk (int);
459 #if defined (HAVE_DECL_STRSTR) && !HAVE_DECL_STRSTR
460 extern char *strstr (const char *, const char *);
463 #if defined (HAVE_DECL_STPCPY) && !HAVE_DECL_STPCPY
464 extern char *stpcpy (char *, const char *);
479 #if defined (HAVE_DECL_MALLOC) && !HAVE_DECL_MALLOC
480 extern void *malloc (size_t);
483 #if defined (HAVE_DECL_CALLOC) && !HAVE_DECL_CALLOC
484 extern void *calloc (size_t, size_t);
487 #if defined (HAVE_DECL_REALLOC) && !HAVE_DECL_REALLOC
488 extern void *realloc (void *, size_t);
499 #ifdef HAVE_INTTYPES_H
500 #include <inttypes.h>
507 /* If the system doesn't provide strsignal, we get it defined in
508 libiberty but no declaration is supplied. */
509 #if !defined (HAVE_STRSIGNAL) \
510 || (defined (HAVE_DECL_STRSIGNAL) && !HAVE_DECL_STRSIGNAL)
512 extern const char *strsignal (int);
516 #ifdef HAVE_GETRLIMIT
517 # if defined (HAVE_DECL_GETRLIMIT) && !HAVE_DECL_GETRLIMIT
520 extern int getrlimit (int, struct rlimit
*);
525 #ifdef HAVE_SETRLIMIT
526 # if defined (HAVE_DECL_SETRLIMIT) && !HAVE_DECL_SETRLIMIT
529 extern int setrlimit (int, const struct rlimit
*);
534 #if defined (HAVE_DECL_ABORT) && !HAVE_DECL_ABORT
535 extern void abort (void);
538 #if defined (HAVE_DECL_SNPRINTF) && !HAVE_DECL_SNPRINTF
539 extern int snprintf (char *, size_t, const char *, ...);
542 #if defined (HAVE_DECL_VSNPRINTF) && !HAVE_DECL_VSNPRINTF
543 extern int vsnprintf (char *, size_t, const char *, va_list);
550 /* 1 if we have C99 designated initializers. */
551 #if !defined(HAVE_DESIGNATED_INITIALIZERS)
552 #define HAVE_DESIGNATED_INITIALIZERS \
553 (((GCC_VERSION >= 2007) || (__STDC_VERSION__ >= 199901L)) \
554 && !defined(__cplusplus))
557 #if !defined(HAVE_DESIGNATED_UNION_INITIALIZERS)
558 #define HAVE_DESIGNATED_UNION_INITIALIZERS \
559 (((GCC_VERSION >= 2007) || (__STDC_VERSION__ >= 199901L)) \
560 && (!defined(__cplusplus) || (GCC_VERSION >= 4007)))
564 # include <sys/stat.h>
567 /* Test if something is a normal file. */
569 #define S_ISREG(m) (((m) & S_IFMT) == S_IFREG)
572 /* Test if something is a directory. */
574 #define S_ISDIR(m) (((m) & S_IFMT) == S_IFDIR)
577 /* Test if something is a character special file. */
579 #define S_ISCHR(m) (((m) & S_IFMT) == S_IFCHR)
582 /* Test if something is a block special file. */
584 #define S_ISBLK(m) (((m) & S_IFMT) == S_IFBLK)
587 /* Test if something is a socket. */
590 # define S_ISSOCK(m) (((m) & S_IFMT) == S_IFSOCK)
592 # define S_ISSOCK(m) 0
596 /* Test if something is a FIFO. */
599 # define S_ISFIFO(m) (((m) & S_IFMT) == S_IFIFO)
601 # define S_ISFIFO(m) 0
605 /* Define well known filenos if the system does not define them. */
607 # define STDIN_FILENO 0
609 #ifndef STDOUT_FILENO
610 # define STDOUT_FILENO 1
612 #ifndef STDERR_FILENO
613 # define STDERR_FILENO 2
616 /* Some systems have mkdir that takes a single argument. */
617 #ifdef MKDIR_TAKES_ONE_ARG
618 # define mkdir(a,b) mkdir (a)
622 # define kill(p,s) raise (s)
625 /* Provide a way to print an address via printf. */
626 #ifndef HOST_PTR_PRINTF
627 #define HOST_PTR_PRINTF "%p"
628 #endif /* ! HOST_PTR_PRINTF */
630 /* By default, colon separates directories in a path. */
631 #ifndef PATH_SEPARATOR
632 #define PATH_SEPARATOR ':'
635 /* Filename handling macros. */
636 #include "filenames.h"
638 /* These should be phased out in favor of IS_DIR_SEPARATOR, where possible. */
639 #ifndef DIR_SEPARATOR
640 # define DIR_SEPARATOR '/'
641 # ifdef HAVE_DOS_BASED_FILE_SYSTEM
642 # define DIR_SEPARATOR_2 '\\'
646 #if defined (ENABLE_PLUGIN) && defined (HAVE_DLFCN_H)
647 /* If plugin support is enabled, we could use libdl. */
651 /* Do not introduce a gmp.h dependency on the build system. */
652 #ifndef GENERATOR_FILE
656 /* Get libiberty declarations. */
657 #include "libiberty.h"
659 #undef FFS /* Some systems predefine this symbol; don't let it interfere. */
660 #undef FLOAT /* Likewise. */
661 #undef ABS /* Likewise. */
662 #undef PC /* Likewise. */
664 /* Provide a default for the HOST_BIT_BUCKET.
665 This suffices for POSIX-like hosts. */
667 #ifndef HOST_BIT_BUCKET
668 #define HOST_BIT_BUCKET "/dev/null"
672 #define offsetof(TYPE, MEMBER) ((size_t) &((TYPE *) 0)->MEMBER)
675 /* Various error reporting routines want to use __FUNCTION__. */
676 #if (GCC_VERSION < 2007)
678 #define __FUNCTION__ "?"
679 #endif /* ! __FUNCTION__ */
682 /* __builtin_expect(A, B) evaluates to A, but notifies the compiler that
683 the most likely value of A is B. This feature was added at some point
684 between 2.95 and 3.0. Let's use 3.0 as the lower bound for now. */
685 #if (GCC_VERSION < 3000)
686 #define __builtin_expect(a, b) (a)
689 /* Redefine abort to report an internal error w/o coredump, and
690 reporting the location of the error in the source file. */
691 extern void fancy_abort (const char *, int, const char *) ATTRIBUTE_NORETURN
;
692 #define abort() fancy_abort (__FILE__, __LINE__, __FUNCTION__)
694 /* Use gcc_assert(EXPR) to test invariants. */
695 #if ENABLE_ASSERT_CHECKING
696 #define gcc_assert(EXPR) \
697 ((void)(!(EXPR) ? fancy_abort (__FILE__, __LINE__, __FUNCTION__), 0 : 0))
698 #elif (GCC_VERSION >= 4005)
699 #define gcc_assert(EXPR) \
700 ((void)(__builtin_expect (!(EXPR), 0) ? __builtin_unreachable (), 0 : 0))
702 /* Include EXPR, so that unused variable warnings do not occur. */
703 #define gcc_assert(EXPR) ((void)(0 && (EXPR)))
706 #ifdef ENABLE_CHECKING
707 #define gcc_checking_assert(EXPR) gcc_assert (EXPR)
709 #define gcc_checking_assert(EXPR) ((void)(0 && (EXPR)))
712 /* Use gcc_unreachable() to mark unreachable locations (like an
713 unreachable default case of a switch. Do not use gcc_assert(0). */
714 #if (GCC_VERSION >= 4005) && !ENABLE_ASSERT_CHECKING
715 #define gcc_unreachable() __builtin_unreachable ()
717 #define gcc_unreachable() (fancy_abort (__FILE__, __LINE__, __FUNCTION__))
720 #if GCC_VERSION >= 3001
721 #define STATIC_CONSTANT_P(X) (__builtin_constant_p (X) && (X))
723 #define STATIC_CONSTANT_P(X) (false && (X))
726 /* Until we can use C++11's static_assert. */
727 #define STATIC_ASSERT(X) \
728 typedef int assertion1[(X) ? 1 : -1] ATTRIBUTE_UNUSED
730 /* Provide a fake boolean type. We make no attempt to use the
731 C99 _Bool, as it may not be available in the bootstrap compiler,
732 and even if it is, it is liable to be buggy.
733 This must be after all inclusion of system headers, as some of
734 them will mess us up. */
743 #else /* !__cplusplus */
748 # define bool unsigned char
755 #endif /* !__cplusplus */
757 /* Some compilers do not allow the use of unsigned char in bitfields. */
758 #define BOOL_BITFIELD unsigned int
760 /* As the last action in this file, we poison the identifiers that
761 shouldn't be used. Note, luckily gcc-3.0's token-based integrated
762 preprocessor won't trip on poisoned identifiers that arrive from
763 the expansion of macros. E.g. #define strrchr rindex, won't error
764 if rindex is poisoned after this directive is issued and later on
767 Note: We define bypass macros for the few cases where we really
768 want to use the libc memory allocation routines. Otherwise we
769 insist you use the "x" versions from libiberty. */
771 #define really_call_malloc malloc
772 #define really_call_calloc calloc
773 #define really_call_realloc realloc
775 #if defined(FLEX_SCANNER) || defined(YYBISON) || defined(YYBYACC)
776 /* Flex and bison use malloc and realloc. Yuk. Note that this means
777 really_call_* cannot be used in a .l or .y file. */
778 #define malloc xmalloc
779 #define realloc xrealloc
782 #if (GCC_VERSION >= 3000)
784 /* Note autoconf checks for prototype declarations and includes
785 system.h while doing so. Only poison these tokens if actually
786 compiling gcc, so that the autoconf declaration tests for malloc
787 etc don't spuriously fail. */
791 #pragma GCC poison calloc strdup
793 #if !defined(FLEX_SCANNER) && !defined(YYBISON)
796 #pragma GCC poison malloc realloc
799 /* The %m format should be used when GCC's main diagnostic functions
800 supporting %m are available, and xstrerror from libiberty
803 #pragma GCC poison strerror
805 /* loc_t is defined on some systems and too inviting for some
806 programmers to avoid. */
808 #pragma GCC poison loc_t
810 /* Old target macros that have moved to the target hooks structure. */
811 #pragma GCC poison ASM_OPEN_PAREN ASM_CLOSE_PAREN \
812 FUNCTION_PROLOGUE FUNCTION_EPILOGUE \
813 FUNCTION_END_PROLOGUE FUNCTION_BEGIN_EPILOGUE \
814 DECL_MACHINE_ATTRIBUTES COMP_TYPE_ATTRIBUTES INSERT_ATTRIBUTES \
815 VALID_MACHINE_DECL_ATTRIBUTE VALID_MACHINE_TYPE_ATTRIBUTE \
816 SET_DEFAULT_TYPE_ATTRIBUTES SET_DEFAULT_DECL_ATTRIBUTES \
817 MERGE_MACHINE_TYPE_ATTRIBUTES MERGE_MACHINE_DECL_ATTRIBUTES \
818 MD_INIT_BUILTINS MD_EXPAND_BUILTIN ASM_OUTPUT_CONSTRUCTOR \
819 ASM_OUTPUT_DESTRUCTOR SIGNED_CHAR_SPEC MAX_CHAR_TYPE_SIZE \
820 WCHAR_UNSIGNED UNIQUE_SECTION SELECT_SECTION SELECT_RTX_SECTION \
821 ENCODE_SECTION_INFO STRIP_NAME_ENCODING ASM_GLOBALIZE_LABEL \
822 ASM_OUTPUT_MI_THUNK CONST_COSTS RTX_COSTS DEFAULT_RTX_COSTS \
823 ADDRESS_COST MACHINE_DEPENDENT_REORG ASM_FILE_START ASM_FILE_END \
824 ASM_SIMPLIFY_DWARF_ADDR INIT_TARGET_OPTABS INIT_SUBTARGET_OPTABS \
825 INIT_GOFAST_OPTABS MULSI3_LIBCALL MULDI3_LIBCALL DIVSI3_LIBCALL \
826 DIVDI3_LIBCALL UDIVSI3_LIBCALL UDIVDI3_LIBCALL MODSI3_LIBCALL \
827 MODDI3_LIBCALL UMODSI3_LIBCALL UMODDI3_LIBCALL BUILD_VA_LIST_TYPE \
828 PRETEND_OUTGOING_VARARGS_NAMED STRUCT_VALUE_INCOMING_REGNUM \
829 ASM_OUTPUT_SECTION_NAME PROMOTE_FUNCTION_ARGS PROMOTE_FUNCTION_MODE \
830 STRUCT_VALUE_INCOMING STRICT_ARGUMENT_NAMING \
831 PROMOTE_FUNCTION_RETURN PROMOTE_PROTOTYPES STRUCT_VALUE_REGNUM \
832 SETUP_INCOMING_VARARGS EXPAND_BUILTIN_SAVEREGS \
833 DEFAULT_SHORT_ENUMS SPLIT_COMPLEX_ARGS MD_ASM_CLOBBERS \
834 HANDLE_PRAGMA_REDEFINE_EXTNAME HANDLE_PRAGMA_EXTERN_PREFIX \
835 MUST_PASS_IN_STACK FUNCTION_ARG_PASS_BY_REFERENCE \
836 VECTOR_MODE_SUPPORTED_P TARGET_SUPPORTS_HIDDEN \
837 FUNCTION_ARG_PARTIAL_NREGS ASM_OUTPUT_DWARF_DTPREL \
838 ALLOCATE_INITIAL_VALUE LEGITIMIZE_ADDRESS FRAME_POINTER_REQUIRED \
839 CAN_ELIMINATE TRAMPOLINE_TEMPLATE INITIALIZE_TRAMPOLINE \
840 TRAMPOLINE_ADJUST_ADDRESS STATIC_CHAIN STATIC_CHAIN_INCOMING \
841 RETURN_POPS_ARGS UNITS_PER_SIMD_WORD OVERRIDE_OPTIONS \
842 OPTIMIZATION_OPTIONS CLASS_LIKELY_SPILLED_P \
843 USING_SJLJ_EXCEPTIONS TARGET_UNWIND_INFO \
844 LABEL_ALIGN_MAX_SKIP LOOP_ALIGN_MAX_SKIP \
845 LABEL_ALIGN_AFTER_BARRIER_MAX_SKIP JUMP_ALIGN_MAX_SKIP \
846 CAN_DEBUG_WITHOUT_FP UNLIKELY_EXECUTED_TEXT_SECTION_NAME \
847 HOT_TEXT_SECTION_NAME LEGITIMATE_CONSTANT_P ALWAYS_STRIP_DOTDOT \
848 OUTPUT_ADDR_CONST_EXTRA SMALL_REGISTER_CLASSES ASM_OUTPUT_IDENT \
849 ASM_BYTE_OP MEMBER_TYPE_FORCES_BLK LIBGCC2_HAS_SF_MODE \
850 LIBGCC2_HAS_DF_MODE LIBGCC2_HAS_XF_MODE LIBGCC2_HAS_TF_MODE
852 /* Target macros only used for code built for the target, that have
853 moved to libgcc-tm.h or have never been present elsewhere. */
854 #pragma GCC poison DECLARE_LIBRARY_RENAMES LIBGCC2_GNU_PREFIX \
855 MD_UNWIND_SUPPORT MD_FROB_UPDATE_CONTEXT ENABLE_EXECUTE_STACK \
856 REG_VALUE_IN_UNWIND_CONTEXT ASSUME_EXTENDED_UNWIND_CONTEXT
858 /* Other obsolete target macros, or macros that used to be in target
859 headers and were not used, and may be obsolete or may never have
861 #pragma GCC poison INT_ASM_OP ASM_OUTPUT_EH_REGION_BEG CPP_PREDEFINES \
862 ASM_OUTPUT_EH_REGION_END ASM_OUTPUT_LABELREF_AS_INT SMALL_STACK \
863 DOESNT_NEED_UNWINDER EH_TABLE_LOOKUP OBJC_SELECTORS_WITHOUT_LABELS \
864 OMIT_EH_TABLE EASY_DIV_EXPR IMPLICIT_FIX_EXPR \
865 LONGJMP_RESTORE_FROM_STACK MAX_INT_TYPE_SIZE ASM_IDENTIFY_GCC \
866 STDC_VALUE TRAMPOLINE_ALIGN ASM_IDENTIFY_GCC_AFTER_SOURCE \
867 SLOW_ZERO_EXTEND SUBREG_REGNO_OFFSET DWARF_LINE_MIN_INSTR_LENGTH \
868 TRADITIONAL_RETURN_FLOAT NO_BUILTIN_SIZE_TYPE \
869 NO_BUILTIN_PTRDIFF_TYPE NO_BUILTIN_WCHAR_TYPE NO_BUILTIN_WINT_TYPE \
870 BLOCK_PROFILER BLOCK_PROFILER_CODE FUNCTION_BLOCK_PROFILER \
871 FUNCTION_BLOCK_PROFILER_EXIT MACHINE_STATE_SAVE \
872 MACHINE_STATE_RESTORE SCCS_DIRECTIVE SECTION_ASM_OP BYTEORDER \
873 ASM_OUTPUT_DEFINE_LABEL_DIFFERENCE_SYMBOL HOST_WORDS_BIG_ENDIAN \
874 OBJC_PROLOGUE ALLOCATE_TRAMPOLINE HANDLE_PRAGMA ROUND_TYPE_SIZE \
875 ROUND_TYPE_SIZE_UNIT CONST_SECTION_ASM_OP CRT_GET_RFIB_TEXT \
876 DBX_LBRAC_FIRST DBX_OUTPUT_ENUM DBX_OUTPUT_SOURCE_FILENAME \
877 DBX_WORKING_DIRECTORY INSN_CACHE_DEPTH INSN_CACHE_SIZE \
878 INSN_CACHE_LINE_WIDTH INIT_SECTION_PREAMBLE NEED_ATEXIT ON_EXIT \
879 EXIT_BODY OBJECT_FORMAT_ROSE MULTIBYTE_CHARS MAP_CHARACTER \
880 LIBGCC_NEEDS_DOUBLE FINAL_PRESCAN_LABEL DEFAULT_CALLER_SAVES \
881 LOAD_ARGS_REVERSED MAX_INTEGER_COMPUTATION_MODE \
882 CONVERT_HARD_REGISTER_TO_SSA_P ASM_OUTPUT_MAIN_SOURCE_FILENAME \
883 FIRST_INSN_ADDRESS TEXT_SECTION SHARED_BSS_SECTION_ASM_OP \
884 PROMOTED_MODE EXPAND_BUILTIN_VA_END \
885 LINKER_DOES_NOT_WORK_WITH_DWARF2 FUNCTION_ARG_KEEP_AS_REFERENCE \
886 GIV_SORT_CRITERION MAX_LONG_TYPE_SIZE MAX_LONG_DOUBLE_TYPE_SIZE \
887 MAX_WCHAR_TYPE_SIZE SHARED_SECTION_ASM_OP INTEGRATE_THRESHOLD \
888 FINAL_REG_PARM_STACK_SPACE MAYBE_REG_PARM_STACK_SPACE \
889 TRADITIONAL_PIPELINE_INTERFACE DFA_PIPELINE_INTERFACE \
890 DBX_OUTPUT_STANDARD_TYPES BUILTIN_SETJMP_FRAME_VALUE \
891 SUNOS4_SHARED_LIBRARIES PROMOTE_FOR_CALL_ONLY \
892 SPACE_AFTER_L_OPTION NO_RECURSIVE_FUNCTION_CSE \
893 DEFAULT_MAIN_RETURN TARGET_MEM_FUNCTIONS EXPAND_BUILTIN_VA_ARG \
894 COLLECT_PARSE_FLAG DWARF2_GENERATE_TEXT_SECTION_LABEL WINNING_GDB \
895 ASM_OUTPUT_FILENAME ASM_OUTPUT_SOURCE_LINE FILE_NAME_JOINER \
896 GDB_INV_REF_REGPARM_STABS_LETTER DBX_MEMPARM_STABS_LETTER \
897 PUT_SDB_SRC_FILE STABS_GCC_MARKER DBX_OUTPUT_FUNCTION_END \
898 DBX_OUTPUT_GCC_MARKER DBX_FINISH_SYMBOL SDB_GENERATE_FAKE \
899 NON_SAVING_SETJMP TARGET_LATE_RTL_PROLOGUE_EPILOGUE \
900 CASE_DROPS_THROUGH TARGET_BELL TARGET_BS TARGET_CR TARGET_DIGIT0 \
901 TARGET_ESC TARGET_FF TARGET_NEWLINE TARGET_TAB TARGET_VT \
902 LINK_LIBGCC_SPECIAL DONT_ACCESS_GBLS_AFTER_EPILOGUE \
903 TARGET_OPTIONS TARGET_SWITCHES EXTRA_CC_MODES FINALIZE_PIC \
904 PREDICATE_CODES SPECIAL_MODE_PREDICATES UNALIGNED_WORD_ASM_OP \
905 EXTRA_SECTIONS EXTRA_SECTION_FUNCTIONS READONLY_DATA_SECTION \
906 TARGET_ASM_EXCEPTION_SECTION TARGET_ASM_EH_FRAME_SECTION \
907 SMALL_ARG_MAX ASM_OUTPUT_SHARED_BSS ASM_OUTPUT_SHARED_COMMON \
908 ASM_OUTPUT_SHARED_LOCAL ASM_MAKE_LABEL_LINKONCE \
909 STACK_CHECK_PROBE_INTERVAL STACK_CHECK_PROBE_LOAD \
910 ORDER_REGS_FOR_LOCAL_ALLOC FUNCTION_OUTGOING_VALUE \
911 ASM_DECLARE_CONSTANT_NAME MODIFY_TARGET_NAME SWITCHES_NEED_SPACES \
912 SWITCH_CURTAILS_COMPILATION SWITCH_TAKES_ARG WORD_SWITCH_TAKES_ARG \
913 TARGET_OPTION_TRANSLATE_TABLE HANDLE_PRAGMA_PACK_PUSH_POP \
914 HANDLE_SYSV_PRAGMA HANDLE_PRAGMA_WEAK CONDITIONAL_REGISTER_USAGE \
915 FUNCTION_ARG_BOUNDARY MUST_USE_SJLJ_EXCEPTIONS US_SOFTWARE_GOFAST \
916 USING_SVR4_H SVR4_ASM_SPEC FUNCTION_ARG FUNCTION_ARG_ADVANCE \
917 FUNCTION_INCOMING_ARG IRA_COVER_CLASSES TARGET_VERSION \
918 MACHINE_TYPE TARGET_HAS_TARGETCM ASM_OUTPUT_BSS \
919 SETJMP_VIA_SAVE_AREA FORBIDDEN_INC_DEC_CLASSES \
920 PREFERRED_OUTPUT_RELOAD_CLASS SYSTEM_INCLUDE_DIR \
921 STANDARD_INCLUDE_DIR STANDARD_INCLUDE_COMPONENT \
922 LINK_ELIMINATE_DUPLICATE_LDIRECTORIES MIPS_DEBUGGING_INFO \
923 IDENT_ASM_OP ALL_COP_ADDITIONAL_REGISTER_NAMES DBX_OUTPUT_LBRAC \
924 DBX_OUTPUT_NFUN DBX_OUTPUT_RBRAC RANGE_TEST_NON_SHORT_CIRCUIT \
925 REAL_VALUE_TRUNCATE REVERSE_CONDEXEC_PREDICATES_P \
926 TARGET_ALIGN_ANON_BITFIELDS TARGET_NARROW_VOLATILE_BITFIELDS \
927 IDENT_ASM_OP UNALIGNED_SHORT_ASM_OP UNALIGNED_INT_ASM_OP \
928 UNALIGNED_LONG_ASM_OP UNALIGNED_DOUBLE_INT_ASM_OP \
929 USE_COMMON_FOR_ONE_ONLY IFCVT_EXTRA_FIELDS IFCVT_INIT_EXTRA_FIELDS \
930 CASE_USE_BIT_TESTS FIXUNS_TRUNC_LIKE_FIX_TRUNC \
931 GO_IF_MODE_DEPENDENT_ADDRESS DELAY_SLOTS_FOR_EPILOGUE \
932 ELIGIBLE_FOR_EPILOGUE_DELAY TARGET_C99_FUNCTIONS TARGET_HAS_SINCOS \
933 REG_CLASS_FROM_LETTER CONST_OK_FOR_LETTER_P \
934 CONST_DOUBLE_OK_FOR_LETTER_P EXTRA_CONSTRAINT \
935 REG_CLASS_FROM_CONSTRAINT REG_CLASS_FOR_CONSTRAINT \
936 EXTRA_CONSTRAINT_STR EXTRA_MEMORY_CONSTRAINT \
937 EXTRA_ADDRESS_CONSTRAINT CONST_DOUBLE_OK_FOR_CONSTRAINT_P \
938 CALLER_SAVE_PROFITABLE LARGEST_EXPONENT_IS_NORMAL \
939 ROUND_TOWARDS_ZERO SF_SIZE DF_SIZE XF_SIZE TF_SIZE LIBGCC2_TF_CEXT
941 /* Hooks that are no longer used. */
942 #pragma GCC poison LANG_HOOKS_FUNCTION_MARK LANG_HOOKS_FUNCTION_FREE \
943 LANG_HOOKS_MARK_TREE LANG_HOOKS_INSERT_DEFAULT_ATTRIBUTES \
944 LANG_HOOKS_TREE_INLINING_ESTIMATE_NUM_INSNS \
945 LANG_HOOKS_PUSHLEVEL LANG_HOOKS_SET_BLOCK \
946 LANG_HOOKS_MAYBE_BUILD_CLEANUP LANG_HOOKS_UPDATE_DECL_AFTER_SAVING \
947 LANG_HOOKS_POPLEVEL LANG_HOOKS_TRUTHVALUE_CONVERSION \
948 TARGET_PROMOTE_FUNCTION_ARGS TARGET_PROMOTE_FUNCTION_RETURN \
949 LANG_HOOKS_MISSING_ARGUMENT LANG_HOOKS_HASH_TYPES \
950 TARGET_HANDLE_OFAST TARGET_OPTION_OPTIMIZATION \
951 TARGET_IRA_COVER_CLASSES TARGET_HELP \
952 TARGET_HANDLE_PRAGMA_EXTERN_PREFIX \
953 TARGET_VECTORIZE_BUILTIN_MUL_WIDEN_EVEN \
954 TARGET_VECTORIZE_BUILTIN_MUL_WIDEN_ODD \
956 /* Arrays that were deleted in favor of a functional interface. */
957 #pragma GCC poison built_in_decls implicit_built_in_decls
959 /* Hooks into libgcc2. */
960 #pragma GCC poison LIBGCC2_DOUBLE_TYPE_SIZE LIBGCC2_WORDS_BIG_ENDIAN \
961 LIBGCC2_FLOAT_WORDS_BIG_ENDIAN
963 /* Miscellaneous macros that are no longer used. */
964 #pragma GCC poison USE_MAPPED_LOCATION GET_ENVIRONMENT
966 /* Libiberty macros that are no longer used in GCC. */
967 #undef ANSI_PROTOTYPES
975 #pragma GCC poison ANSI_PROTOTYPES PTR_CONST LONG_DOUBLE VPARAMS VA_OPEN \
976 VA_FIXEDARG VA_CLOSE VA_START
979 /* Front ends should never have to include middle-end headers. Enforce
980 this by poisoning the header double-include protection defines. */
981 #ifdef IN_GCC_FRONTEND
982 #pragma GCC poison GCC_RTL_H GCC_EXCEPT_H GCC_EXPR_H
985 /* Note: not all uses of the `index' token (e.g. variable names and
986 structure members) have been eliminated. */
991 #pragma GCC poison bcopy bzero bcmp rindex
993 #endif /* GCC >= 3.0 */
995 /* This macro allows casting away const-ness to pass -Wcast-qual
996 warnings. DO NOT USE THIS UNLESS YOU REALLY HAVE TO! It should
997 only be used in certain specific cases. One valid case is where
998 the C standard definitions or prototypes force you to. E.g. if you
999 need to free a const object, or if you pass a const string to
1000 execv, et al. Another valid use would be in an allocation function
1001 that creates const objects that need to be initialized. In some
1002 cases we have non-const functions that return the argument
1003 (e.g. next_nonnote_insn). Rather than create const shadow
1004 functions, we can cast away const-ness in calling these interfaces
1005 if we're careful to verify that the called function does indeed not
1006 modify its argument and the return value is only used in a const
1007 context. (This can be somewhat dangerous as these assumptions can
1008 change after the fact). Beyond these uses, most other cases of
1009 using this macro should be viewed with extreme caution. */
1012 #define CONST_CAST2(TOTYPE,FROMTYPE,X) (const_cast<TOTYPE> (X))
1014 #if defined(__GNUC__) && GCC_VERSION > 4000
1015 /* GCC 4.0.x has a bug where it may ICE on this expression,
1016 so does GCC 3.4.x (PR17436). */
1017 #define CONST_CAST2(TOTYPE,FROMTYPE,X) ((__extension__(union {FROMTYPE _q; TOTYPE _nq;})(X))._nq)
1018 #elif defined(__GNUC__)
1019 static inline char *
1020 helper_const_non_const_cast (const char *p
)
1023 const char *const_c
;
1030 #define CONST_CAST2(TOTYPE,FROMTYPE,X) \
1031 ((TOTYPE) helper_const_non_const_cast ((const char *) (FROMTYPE) (X)))
1033 #define CONST_CAST2(TOTYPE,FROMTYPE,X) ((TOTYPE)(FROMTYPE)(X))
1036 #define CONST_CAST(TYPE,X) CONST_CAST2 (TYPE, const TYPE, (X))
1037 #define CONST_CAST_TREE(X) CONST_CAST (union tree_node *, (X))
1038 #define CONST_CAST_RTX(X) CONST_CAST (struct rtx_def *, (X))
1039 #define CONST_CAST_RTX_INSN(X) CONST_CAST (struct rtx_insn *, (X))
1040 #define CONST_CAST_BB(X) CONST_CAST (struct basic_block_def *, (X))
1041 #define CONST_CAST_GIMPLE(X) CONST_CAST (struct gimple_statement_base *, (X))
1043 /* Activate certain diagnostics as warnings (not errors via the
1045 #if GCC_VERSION >= 4003
1046 /* If asserts are disabled, activate -Wuninitialized as a warning (not
1047 an error/-Werror). */
1048 #ifndef ENABLE_ASSERT_CHECKING
1049 #pragma GCC diagnostic warning "-Wuninitialized"
1053 #ifdef ENABLE_VALGRIND_ANNOTATIONS
1054 # ifdef HAVE_VALGRIND_MEMCHECK_H
1055 # include <valgrind/memcheck.h>
1056 # elif defined HAVE_MEMCHECK_H
1057 # include <memcheck.h>
1059 # include <valgrind.h>
1061 /* Compatibility macros to let valgrind 3.1 work. */
1062 # ifndef VALGRIND_MAKE_MEM_NOACCESS
1063 # define VALGRIND_MAKE_MEM_NOACCESS VALGRIND_MAKE_NOACCESS
1065 # ifndef VALGRIND_MAKE_MEM_DEFINED
1066 # define VALGRIND_MAKE_MEM_DEFINED VALGRIND_MAKE_READABLE
1068 # ifndef VALGRIND_MAKE_MEM_UNDEFINED
1069 # define VALGRIND_MAKE_MEM_UNDEFINED VALGRIND_MAKE_WRITABLE
1072 /* Avoid #ifdef:s when we can help it. */
1073 #define VALGRIND_DISCARD(x)
1074 #define VALGRIND_MALLOCLIKE_BLOCK(w,x,y,z)
1075 #define VALGRIND_FREELIKE_BLOCK(x,y)
1078 /* In LTO -fwhole-program build we still want to keep the debug functions available
1079 for debugger. Mark them as used to prevent removal. */
1080 #if (GCC_VERSION > 4000)
1081 #define DEBUG_FUNCTION __attribute__ ((__used__))
1082 #define DEBUG_VARIABLE __attribute__ ((__used__))
1084 #define DEBUG_FUNCTION
1085 #define DEBUG_VARIABLE
1088 /* General macro to extract bit Y of X. */
1089 #define TEST_BIT(X, Y) (((X) >> (Y)) & 1)
1091 /* Get definitions of HOST_WIDE_INT. */
1094 #endif /* ! GCC_SYSTEM_H */
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