1 /* ----------------------------------------------------------------------- * 2 * 3 * Copyright 2007-2009 The NASM Authors - All Rights Reserved 4 * See the file AUTHORS included with the NASM distribution for 5 * the specific copyright holders. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following 9 * conditions are met: 10 * 11 * * Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * * Redistributions in binary form must reproduce the above 14 * copyright notice, this list of conditions and the following 15 * disclaimer in the documentation and/or other materials provided 16 * with the distribution. 17 * 18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND 19 * CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, 20 * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 21 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 22 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR 23 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 24 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 25 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 26 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 28 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR 29 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, 30 * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 31 * 32 * ----------------------------------------------------------------------- */ 33 34 /* 35 * compiler.h 36 * 37 * Compiler-specific macros for NASM. Feel free to add support for 38 * other compilers in here. 39 * 40 * This header file should be included before any other header. 41 */ 42 43 #ifndef NASM_COMPILER_H 44 #define NASM_COMPILER_H 1 45 46 #ifdef __APPLE__ 47 #define _FORTIFY_SOURCE 0 //aris002 - in the future evaluate how unsafe are the safe funtions and vice versa 48 #endif 49 50 #ifdef HAVE_CONFIG_H 51 # include "config.h" 52 /* autoconf doesn't define these if they are redundant, but we want to 53 be able to #ifdef them... */ 54 #else 55 /* Default these to unsupported unless we have config.h */ 56 # ifndef restrict 57 # define restrict 58 # endif 59 #endif /* HAVE_CONFIG_H */ 60 61 /* This is required to get the standard <inttypes.h> macros when compiling 62 with a C++ compiler. This must be defined *before* <inttypes.h> is 63 included, directly or indirectly. */ 64 #define __STDC_CONSTANT_MACROS 1 65 #define __STDC_LIMIT_MACROS 1 66 #define __STDC_FORMAT_MACROS 1 67 68 #ifdef __GNUC__ 69 # if __GNUC__ >= 4 70 # define HAVE_GNUC_4 71 # endif 72 # if __GNUC__ >= 3 73 # define HAVE_GNUC_3 74 # endif 75 76 #define HAVE_SNPRINTF 77 #define HAVE_VSNPRINTF 78 79 #endif 80 81 #ifdef __GNUC__ 82 # define _unused __attribute__((unused)) 83 #else 84 # define _unused 85 #endif 86 87 /* Some versions of MSVC have these only with underscores in front */ 88 #include <stddef.h> 89 #include <stdarg.h> 90 #include <stdio.h> 91 92 #ifdef _MSC_VER 93 #define HAVE__SNPRINTF 94 #endif 95 96 #ifndef HAVE_SNPRINTF 97 # ifdef HAVE__SNPRINTF 98 # define snprintf _snprintf 99 # else 100 int snprintf(char *, size_t, const char *, ...); 101 # endif 102 #endif 103 104 #ifndef HAVE_VSNPRINTF 105 # ifdef HAVE__VSNPRINT 106 # define vsnprintf _vsnprintf 107 # else 108 int vsnprintf(char *, size_t, const char *, va_list); 109 # endif 110 #endif 111 112 #if !defined(HAVE_STRLCPY) || !HAVE_DECL_STRLCPY 113 size_t strlcpy(char *, const char *, size_t); 114 #endif 115 116 #ifndef __cplusplus /* C++ has false, true, bool as keywords */ 117 # if defined(HAVE_STDBOOL_H) && defined(HAVE_WORKING_BOOL) 118 # include <stdbool.h> 119 # else 120 /* This is sort of dangerous, since casts will behave different than 121 casting to the standard boolean type. Always use !!, not (bool). */ 122 typedef enum bool { false, true } bool; 123 # endif 124 #endif 125 126 /* Provide a substitute for offsetof() if we don't have one. This 127 variant works on most (but not *all*) systems... */ 128 #ifndef offsetof 129 # define offsetof(t,m) ((size_t)&(((t *)0)->m)) 130 #endif 131 132 /* The container_of construct: if p is a pointer to member m of 133 container class c, then return a pointer to the container of which 134 *p is a member. */ 135 #ifndef container_of 136 # define container_of(p, c, m) ((c *)((char *)(p) - offsetof(c,m))) 137 #endif 138 139 /* Some misguided platforms hide the defs for these */ 140 #if defined(HAVE_STRCASECMP) && !HAVE_DECL_STRCASECMP 141 int strcasecmp(const char *, const char *); 142 #endif 143 144 #if defined(HAVE_STRICMP) && !HAVE_DECL_STRICMP 145 int stricmp(const char *, const char *); 146 #endif 147 148 #if defined(HAVE_STRNCASECMP) && !HAVE_DECL_STRNCASECMP 149 int strncasecmp(const char *, const char *, size_t); 150 #endif 151 152 #if defined(HAVE_STRNICMP) && !HAVE_DECL_STRNICMP 153 int strnicmp(const char *, const char *, size_t); 154 #endif 155 156 #if defined(HAVE_STRSEP) && !HAVE_DECL_STRSEP 157 char *strsep(char **, const char *); 158 #endif 159 160 /* 161 * Define this to 1 for faster performance if this is a littleendian 162 * platform which can do unaligned memory references. It is safe 163 * to leave it defined to 0 even if that is true. 164 */ 165 #if defined(__386__) || defined(__i386__) || defined(__x86_64__) 166 # define X86_MEMORY 1 167 # ifndef WORDS_LITTLEENDIAN 168 # define WORDS_LITTLEENDIAN 1 169 # endif 170 #else 171 # define X86_MEMORY 0 172 #endif 173 174 /* 175 * Hints to the compiler that a particular branch of code is more or 176 * less likely to be taken. 177 */ 178 #if defined(__GNUC__) && __GNUC__ >= 3 179 # define likely(x) __builtin_expect(!!(x), 1) 180 # define unlikely(x) __builtin_expect(!!(x), 0) 181 #else 182 # define likely(x) (!!(x)) 183 # define unlikely(x) (!!(x)) 184 #endif 185 186 /* 187 * How to tell the compiler that a function doesn't return 188 */ 189 #ifdef __GNUC__ 190 # define no_return void __attribute__((noreturn)) 191 #else 192 # define no_return void 193 #endif 194 195 #endif /* NASM_COMPILER_H */ 196