1fb908c0db
OpenWatcom 1.8 has a C99 mode, which implements _Bool and <stdbool.h>. Unfortunately the implementation is broken, and doesn't let _Bool be implicitly converted to integer (as required by the C99 spec). Detect this case in autoconf.
150 lines
3.9 KiB
C
150 lines
3.9 KiB
C
/* ----------------------------------------------------------------------- *
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*
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* Copyright 2007-2008 The NASM Authors - All Rights Reserved
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the license given in the file "LICENSE"
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* distributed in the NASM archive.
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*
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* ----------------------------------------------------------------------- */
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/*
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* compiler.h
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*
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* Compiler-specific macros for NASM. Feel free to add support for
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* other compilers in here.
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*
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* This header file should be included before any other header.
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*/
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#ifndef NASM_COMPILER_H
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#define NASM_COMPILER_H 1
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#ifdef HAVE_CONFIG_H
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# include "config.h"
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/* autoconf doesn't define these if they are redundant, but we want to
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be able to #ifdef them... */
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#else
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/* Default these to unsupported unless we have config.h */
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# ifndef inline
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# define inline
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# endif
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# ifndef restrict
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# define restrict
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# endif
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#endif /* HAVE_CONFIG_H */
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/* This is required to get the standard <inttypes.h> macros when compiling
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with a C++ compiler. This must be defined *before* <inttypes.h> is
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included, directly or indirectly. */
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#define __STDC_CONSTANT_MACROS 1
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#define __STDC_LIMIT_MACROS 1
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#define __STDC_FORMAT_MACROS 1
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#ifdef __GNUC__
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# if __GNUC__ >= 4
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# define HAVE_GNUC_4
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# endif
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# if __GNUC__ >= 3
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# define HAVE_GNUC_3
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# endif
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#endif
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#ifdef __GNUC__
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# define _unused __attribute__((unused))
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#else
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# define _unused
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#endif
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/* Some versions of MSVC have these only with underscores in front */
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#include <stddef.h>
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#include <stdarg.h>
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#include <stdio.h>
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#ifndef HAVE_SNPRINTF
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# ifdef HAVE__SNPRINTF
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# define snprintf _snprintf
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# else
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int snprintf(char *, size_t, const char *, ...);
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# endif
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#endif
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#ifndef HAVE_VSNPRINTF
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# ifdef HAVE__VSNPRINT
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# define vsnprintf _vsnprintf
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# else
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int vsnprintf(char *, size_t, const char *, va_list);
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# endif
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#endif
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#ifndef __cplusplus /* C++ has false, true, bool as keywords */
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# if defined(HAVE_STDBOOL_H) && defined(HAVE_WORKING_BOOL)
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# include <stdbool.h>
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# else
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/* This is sort of dangerous, since casts will behave different than
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casting to the standard boolean type. Always use !!, not (bool). */
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typedef enum bool { false, true } bool;
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# endif
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#endif
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/* Provide a substitute for offsetof() if we don't have one. This
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variant works on most (but not *all*) systems... */
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#ifndef offsetof
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# define offsetof(t,m) ((size_t)&(((t *)0)->m))
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#endif
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/* The container_of construct: if p is a pointer to member m of
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container class c, then return a pointer to the container of which
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*p is a member. */
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#ifndef container_of
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# define container_of(p, c, m) ((c *)((char *)(p) - offsetof(c,m)))
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#endif
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/* Some misguided platforms hide the defs for these */
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#if defined(HAVE_STRCASECMP) && !HAVE_DECL_STRCASECMP
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int strcasecmp(const char *, const char *);
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#endif
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#if defined(HAVE_STRICMP) && !HAVE_DECL_STRICMP
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int stricmp(const char *, const char *);
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#endif
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#if defined(HAVE_STRNCASECMP) && !HAVE_DECL_STRNCASECMP
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int strncasecmp(const char *, const char *, size_t);
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#endif
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#if defined(HAVE_STRNICMP) && !HAVE_DECL_STRNICMP
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int strnicmp(const char *, const char *, size_t);
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#endif
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#if defined(HAVE_STRSEP) && !HAVE_DECL_STRSEP
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char *strsep(char **, const char *);
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#endif
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/*
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* Define this to 1 for faster performance if this is a littleendian
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* platform which can do unaligned memory references. It is safe
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* to leave it defined to 0 even if that is true.
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*/
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#if defined(__386__) || defined(__i386__) || defined(__x86_64__)
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# define X86_MEMORY 1
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# ifndef WORDS_LITTLEENDIAN
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# define WORDS_LITTLEENDIAN 1
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# endif
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#else
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# define X86_MEMORY 0
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#endif
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/*
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* Hints to the compiler that a particular branch of code is more or
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* less likely to be taken.
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*/
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#if defined(__GNUC__) && __GNUC__ >= 3
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# define likely(x) __builtin_expect(!!(x), 1)
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# define unlikely(x) __builtin_expect(!!(x), 0)
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#else
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# define likely(x) (!!(x))
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# define unlikely(x) (!!(x))
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#endif
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#endif /* NASM_COMPILER_H */
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