1 /* Get common system includes and various definitions and declarations based
3 Copyright (C) 1998, 1999, 2000, 2001, 2002 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 2, 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 COPYING. If not, write to the Free
19 Software Foundation, 59 Temple Place - Suite 330, Boston, MA
26 /* This is the location of the online document giving information how
27 to report bugs. If you change this string, also check for strings
28 not under control of the preprocessor. */
29 #define GCCBUGURL "<URL:http://sdcc.sourceforge.net>"
33 /* We must include stdarg.h/varargs.h before stdio.h. */
34 #ifdef ANSI_PROTOTYPES
42 # define va_copy(d,s) __va_copy((d),(s))
44 # define va_copy(d,s) ((d) = (s))
56 /* Define a generic NULL if one hasn't already been defined. */
61 /* There are an extraordinary number of issues with <ctype.h>.
62 The last straw is that it varies with the locale. Use libiberty's
63 replacement instead. */
64 #if defined(__APPLE__) && defined(__MACH__)
65 #include <libiberty/safe-ctype.h>
67 #include <safe-ctype.h>
70 #include <sys/types.h>
74 #if !defined (errno) && defined (HAVE_DECL_ERRNO) && !HAVE_DECL_ERRNO
78 #ifdef STRING_WITH_STRINGS
85 # ifdef HAVE_STRINGS_H
95 /* If we don't have an overriding definition, set SUCCESS_EXIT_CODE and
96 FATAL_EXIT_CODE to EXIT_SUCCESS and EXIT_FAILURE respectively,
97 or 0 and 1 if those macros are not defined. */
98 #ifndef SUCCESS_EXIT_CODE
100 # define SUCCESS_EXIT_CODE EXIT_SUCCESS
102 # define SUCCESS_EXIT_CODE 0
106 #ifndef FATAL_EXIT_CODE
108 # define FATAL_EXIT_CODE EXIT_FAILURE
110 # define FATAL_EXIT_CODE 1
118 #ifdef HAVE_SYS_PARAM_H
119 # include <sys/param.h>
120 /* We use this identifier later and it appears in some vendor param.h's. */
128 /* Get definitions of HOST_WIDE_INT and HOST_WIDEST_INT. */
131 /* A macro to determine whether a VALUE lies inclusively within a
132 certain range without evaluating the VALUE more than once. This
133 macro won't warn if the VALUE is unsigned and the LOWER bound is
134 zero, as it would e.g. with "VALUE >= 0 && ...". Note the LOWER
135 bound *is* evaluated twice, and LOWER must not be greater than
136 UPPER. However the bounds themselves can be either positive or
138 #define IN_RANGE(VALUE, LOWER, UPPER) \
139 ((unsigned HOST_WIDE_INT) ((VALUE) - (LOWER)) <= ((UPPER) - (LOWER)))
141 /* Infrastructure for defining missing _MAX and _MIN macros. Note that
142 macros defined with these cannot be used in #if. */
144 /* The extra casts work around common compiler bugs. */
145 #define INTTYPE_SIGNED(t) (! ((t) 0 < (t) -1))
146 /* The outer cast is needed to work around a bug in Cray C 5.0.3.0.
147 It is necessary at least when t == time_t. */
148 #define INTTYPE_MINIMUM(t) ((t) (INTTYPE_SIGNED (t) \
149 ? ~ (t) 0 << (sizeof(t) * CHAR_BIT - 1) : (t) 0))
150 #define INTTYPE_MAXIMUM(t) ((t) (~ (t) 0 - INTTYPE_MINIMUM (t)))
152 /* Use that infrastructure to provide a few constants. */
154 # define UCHAR_MAX INTTYPE_MAXIMUM (unsigned char)
157 #ifdef TIME_WITH_SYS_TIME
158 # include <sys/time.h>
162 # include <sys/time.h>
173 # ifdef HAVE_SYS_FILE_H
174 # include <sys/file.h>
196 /* Some systems define these in, e.g., param.h. We undefine these names
197 here to avoid the warnings. We prefer to use our definitions since we
198 know they are correct. */
202 #define MIN(X,Y) ((X) < (Y) ? (X) : (Y))
203 #define MAX(X,Y) ((X) > (Y) ? (X) : (Y))
205 /* Returns the least number N such that N * Y >= X. */
206 #define CEIL(x,y) (((x) + (y) - 1) / (y))
208 #ifdef HAVE_SYS_WAIT_H
209 #include <sys/wait.h>
213 #define WIFSIGNALED(S) (((S) & 0xff) != 0 && ((S) & 0xff) != 0x7f)
216 #define WTERMSIG(S) ((S) & 0x7f)
219 #define WIFEXITED(S) (((S) & 0xff) == 0)
222 #define WEXITSTATUS(S) (((S) & 0xff00) >> 8)
225 #define WSTOPSIG WEXITSTATUS
228 #define WCOREDUMP(S) ((S) & WCOREFLG)
231 #define WCOREFLG 0200
234 /* The HAVE_DECL_* macros are three-state, undefined, 0 or 1. If they
235 are defined to 0 then we must provide the relevant declaration
236 here. These checks will be in the undefined state while configure
237 is running so be careful to test "defined (HAVE_DECL_*)". */
239 #if defined (HAVE_DECL_ATOF) && !HAVE_DECL_ATOF
240 extern double atof PARAMS ((const char *));
243 #if defined (HAVE_DECL_ATOL) && !HAVE_DECL_ATOL
244 extern long atol PARAMS ((const char *));
247 #if defined (HAVE_DECL_FREE) && !HAVE_DECL_FREE
248 extern void free PARAMS ((PTR));
251 #if defined (HAVE_DECL_GETENV) && !HAVE_DECL_GETENV
252 extern char *getenv PARAMS ((const char *));
255 #if defined (HAVE_DECL_STRSTR) && !HAVE_DECL_STRSTR
256 extern char *strstr PARAMS ((const char *, const char *));
263 #if defined (HAVE_DECL_MALLOC) && !HAVE_DECL_MALLOC
264 extern PTR malloc PARAMS ((size_t));
267 #if defined (HAVE_DECL_CALLOC) && !HAVE_DECL_CALLOC
268 extern PTR calloc PARAMS ((size_t, size_t));
271 #if defined (HAVE_DECL_REALLOC) && !HAVE_DECL_REALLOC
272 extern PTR realloc PARAMS ((PTR, size_t));
275 #if !defined(__STDC__) && !defined(volatile)
279 #if defined (HAVE_DECL_ABORT) && !HAVE_DECL_ABORT
280 extern void abort PARAMS ((void));
283 /* 1 if we have C99 designated initializers. */
284 #if !defined(HAVE_DESIGNATED_INITIALIZERS)
285 #if defined(__APPLE__) && (__MACH__)
286 #define HAVE_DESIGNATED_INITIALIZERS 0
288 #define HAVE_DESIGNATED_INITIALIZERS \
289 ((GCC_VERSION >= 2007) || (__STDC_VERSION__ >= 199901L))
294 # include <sys/stat.h>
297 /* Test if something is a normal file. */
299 #define S_ISREG(m) (((m) & S_IFMT) == S_IFREG)
302 /* Test if something is a directory. */
304 #define S_ISDIR(m) (((m) & S_IFMT) == S_IFDIR)
307 /* Test if something is a character special file. */
309 #define S_ISCHR(m) (((m) & S_IFMT) == S_IFCHR)
312 /* Test if something is a block special file. */
314 #define S_ISBLK(m) (((m) & S_IFMT) == S_IFBLK)
317 /* Test if something is a socket. */
320 # define S_ISSOCK(m) (((m) & S_IFMT) == S_IFSOCK)
322 # define S_ISSOCK(m) 0
326 /* Test if something is a FIFO. */
329 # define S_ISFIFO(m) (((m) & S_IFMT) == S_IFIFO)
331 # define S_ISFIFO(m) 0
335 /* Approximate O_NONBLOCK. */
337 #define O_NONBLOCK O_NDELAY
340 /* Approximate O_NOCTTY. */
345 /* Define well known filenos if the system does not define them. */
347 # define STDIN_FILENO 0
349 #ifndef STDOUT_FILENO
350 # define STDOUT_FILENO 1
352 #ifndef STDERR_FILENO
353 # define STDERR_FILENO 2
356 /* Some systems have mkdir that takes a single argument. */
357 #ifdef MKDIR_TAKES_ONE_ARG
358 # define mkdir(a,b) mkdir(a)
361 /* Provide a way to print an address via printf. */
362 #ifndef HOST_PTR_PRINTF
363 # ifdef HAVE_PRINTF_PTR
364 # define HOST_PTR_PRINTF "%p"
366 # define HOST_PTR_PRINTF \
367 (sizeof (int) == sizeof (char *) ? "%x" \
368 : sizeof (long) == sizeof (char *) ? "%lx" : "%llx")
370 #endif /* ! HOST_PTR_PRINTF */
372 /* By default, colon separates directories in a path. */
373 #ifndef PATH_SEPARATOR
374 #define PATH_SEPARATOR ':'
377 #ifndef DIR_SEPARATOR
378 #define DIR_SEPARATOR '/'
381 /* Define IS_DIR_SEPARATOR. */
382 #ifndef DIR_SEPARATOR_2
383 # define IS_DIR_SEPARATOR(CH) ((CH) == DIR_SEPARATOR)
384 #else /* DIR_SEPARATOR_2 */
385 # define IS_DIR_SEPARATOR(CH) \
386 (((CH) == DIR_SEPARATOR) || ((CH) == DIR_SEPARATOR_2))
387 #endif /* DIR_SEPARATOR_2 */
389 /* Say how to test for an absolute pathname. On Unix systems, this is if
390 it starts with a leading slash or a '$', the latter meaning the value of
391 an environment variable is to be used. On machien with DOS-based
392 file systems, it is also absolute if it starts with a drive identifier. */
393 #ifdef HAVE_DOS_BASED_FILE_SYSTEM
394 #define IS_ABSOLUTE_PATHNAME(STR) \
395 (IS_DIR_SEPARATOR ((STR)[0]) || (STR)[0] == '$' \
396 || ((STR)[0] != '\0' && (STR)[1] == ':' && IS_DIR_SEPARATOR ((STR)[2])))
398 #define IS_ABSOLUTE_PATHNAME(STR) \
399 (IS_DIR_SEPARATOR ((STR)[0]) || (STR)[0] == '$')
402 /* Get libiberty declarations. */
403 #include "libiberty.h"
407 /* Provide a default for the HOST_BIT_BUCKET.
408 This suffices for POSIX-like hosts. */
410 #ifndef HOST_BIT_BUCKET
411 #define HOST_BIT_BUCKET "/dev/null"
414 /* Be conservative and only use enum bitfields with GCC.
415 FIXME: provide a complete autoconf test for buggy enum bitfields. */
417 #if (GCC_VERSION > 2000)
418 #define ENUM_BITFIELD(TYPE) enum TYPE
420 #define ENUM_BITFIELD(TYPE) unsigned int
424 #define offsetof(TYPE, MEMBER) ((size_t) &((TYPE *) 0)->MEMBER)
427 /* Traditional C cannot initialize union members of structs. Provide
428 a macro which expands appropriately to handle it. This only works
429 if you intend to initialize the union member to zero since it relies
430 on default initialization to zero in the traditional C case. */
432 #define UNION_INIT_ZERO , {0}
434 #define UNION_INIT_ZERO
437 /* Various error reporting routines want to use __FUNCTION__. */
438 #if (GCC_VERSION < 2007)
440 #define __FUNCTION__ "?"
441 #endif /* ! __FUNCTION__ */
444 /* __builtin_expect(A, B) evaluates to A, but notifies the compiler that
445 the most likely value of A is B. This feature was added at some point
446 between 2.95 and 3.0. Let's use 3.0 as the lower bound for now. */
447 #if (GCC_VERSION < 3000)
448 #define __builtin_expect(a, b) (a)
451 /* Provide some sort of boolean type. We use stdbool.h if it's
452 available. This must be after all inclusion of system headers,
453 as some of them will mess us up. */
460 #ifdef HAVE_STDBOOL_H
461 # include <stdbool.h>
474 /* As the last action in this file, we poison the identifiers that
475 shouldn't be used. Note, luckily gcc-3.0's token-based integrated
476 preprocessor won't trip on poisoned identifiers that arrive from
477 the expansion of macros. E.g. #define strrchr rindex, won't error
478 if rindex is poisoned after this directive is issued and later on
481 Note: We define bypass macros for the few cases where we really
482 want to use the libc memory allocation routines. Otherwise we
483 insist you use the "x" versions from libiberty. */
485 #define really_call_malloc malloc
486 #define really_call_calloc calloc
487 #define really_call_realloc realloc
489 #if (GCC_VERSION >= 3000)
491 /* Note autoconf checks for prototype declarations and includes
492 system.h while doing so. Only poison these tokens if actually
493 compiling gcc, so that the autoconf declaration tests for malloc
494 etc don't spuriously fail. */
500 #pragma GCC poison malloc realloc calloc strdup
502 /* Old target macros that have moved to the target hooks structure. */
503 #pragma GCC poison ASM_OPEN_PAREN ASM_CLOSE_PAREN \
504 FUNCTION_PROLOGUE FUNCTION_EPILOGUE \
505 FUNCTION_END_PROLOGUE FUNCTION_BEGIN_EPILOGUE \
506 DECL_MACHINE_ATTRIBUTES COMP_TYPE_ATTRIBUTES INSERT_ATTRIBUTES \
507 VALID_MACHINE_DECL_ATTRIBUTE VALID_MACHINE_TYPE_ATTRIBUTE \
508 SET_DEFAULT_TYPE_ATTRIBUTES SET_DEFAULT_DECL_ATTRIBUTES \
509 MERGE_MACHINE_TYPE_ATTRIBUTES MERGE_MACHINE_DECL_ATTRIBUTES \
510 MD_INIT_BUILTINS MD_EXPAND_BUILTIN ASM_OUTPUT_CONSTRUCTOR \
511 ASM_OUTPUT_DESTRUCTOR SIGNED_CHAR_SPEC
513 /* And other obsolete target macros, or macros that used to be in target
514 headers and were not used, and may be obsolete or may never have
516 #pragma GCC poison INT_ASM_OP ASM_OUTPUT_EH_REGION_BEG \
517 ASM_OUTPUT_EH_REGION_END ASM_OUTPUT_LABELREF_AS_INT \
518 DOESNT_NEED_UNWINDER EH_TABLE_LOOKUP OBJC_SELECTORS_WITHOUT_LABELS \
519 OMIT_EH_TABLE EASY_DIV_EXPR IMPLICIT_FIX_EXPR \
520 LONGJMP_RESTORE_FROM_STACK MAX_INT_TYPE_SIZE ASM_IDENTIFY_GCC \
521 STDC_VALUE TRAMPOLINE_ALIGN ASM_IDENTIFY_GCC_AFTER_SOURCE \
522 SLOW_ZERO_EXTEND SUBREG_REGNO_OFFSET DWARF_LINE_MIN_INSTR_LENGTH \
523 BLOCK_PROFILER BLOCK_PROFILER_CODE FUNCTION_BLOCK_PROFILER \
524 FUNCTION_BLOCK_PROFILER_EXIT MACHINE_STATE_SAVE \
525 MACHINE_STATE_RESTORE
529 /* Note: not all uses of the `index' token (e.g. variable names and
530 structure members) have been eliminated. */
535 #pragma GCC poison bcopy bzero bcmp rindex
537 #endif /* GCC >= 3.0 */
539 #endif /* ! GCC_SYSTEM_H */