1 /* ----------------------------------------------------------------------- *
3 * Copyright 2007-2016 The NASM Authors - All Rights Reserved
4 * See the file AUTHORS included with the NASM distribution for
5 * the specific copyright holders.
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following
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.
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.
32 * ----------------------------------------------------------------------- */
37 * Compiler-specific macros for NASM. Feel free to add support for
38 * other compilers in here.
40 * This header file should be included before any other header.
43 #ifndef NASM_COMPILER_H
44 #define NASM_COMPILER_H 1
47 /* DJGPP has header file problems if __STRICT_ANSI__ is defined */
48 # undef __STRICT_ANSI__
53 /* autoconf doesn't define these if they are redundant, but we want to
54 be able to #ifdef them... */
56 /* Default these to unsupported unless we have config.h */
63 #endif /* HAVE_CONFIG_H */
65 /* This is required to get the standard <inttypes.h> macros when compiling
66 with a C++ compiler. This must be defined *before* <inttypes.h> is
67 included, directly or indirectly. */
68 #define __STDC_CONSTANT_MACROS 1
69 #define __STDC_LIMIT_MACROS 1
70 #define __STDC_FORMAT_MACROS 1
82 # define _unused __attribute__((unused))
87 /* Some versions of MSVC have these only with underscores in front */
93 # ifdef HAVE__SNPRINTF
94 # define snprintf _snprintf
96 int snprintf(char *, size_t, const char *, ...);
100 #ifndef HAVE_VSNPRINTF
101 # ifdef HAVE__VSNPRINTF
102 # define vsnprintf _vsnprintf
104 int vsnprintf(char *, size_t, const char *, va_list);
108 #if !defined(HAVE_STRLCPY) || !HAVE_DECL_STRLCPY
109 size_t strlcpy(char *, const char *, size_t);
112 #ifndef __cplusplus /* C++ has false, true, bool as keywords */
113 # if defined(HAVE_STDBOOL_H) && defined(HAVE_WORKING_BOOL)
114 # include <stdbool.h>
116 /* This is sort of dangerous, since casts will behave different than
117 casting to the standard boolean type. Always use !!, not (bool). */
118 typedef enum bool { false, true } bool;
122 /* Provide a substitute for offsetof() if we don't have one. This
123 variant works on most (but not *all*) systems... */
125 # define offsetof(t,m) ((size_t)&(((t *)0)->m))
128 /* The container_of construct: if p is a pointer to member m of
129 container class c, then return a pointer to the container of which
132 # define container_of(p, c, m) ((c *)((char *)(p) - offsetof(c,m)))
135 /* Some misguided platforms hide the defs for these */
136 #if defined(HAVE_STRCASECMP) && !HAVE_DECL_STRCASECMP
137 int strcasecmp(const char *, const char *);
140 #if defined(HAVE_STRICMP) && !HAVE_DECL_STRICMP
141 int stricmp(const char *, const char *);
144 #if defined(HAVE_STRNCASECMP) && !HAVE_DECL_STRNCASECMP
145 int strncasecmp(const char *, const char *, size_t);
148 #if defined(HAVE_STRNICMP) && !HAVE_DECL_STRNICMP
149 int strnicmp(const char *, const char *, size_t);
152 #if defined(HAVE_STRSEP) && !HAVE_DECL_STRSEP
153 char *strsep(char **, const char *);
157 * Define this to 1 for faster performance if this is a littleendian
158 * platform which can do unaligned memory references. It is safe
159 * to leave it defined to 0 even if that is true.
161 #if defined(__386__) || defined(__i386__) || defined(__x86_64__)
162 # define X86_MEMORY 1
163 # ifndef WORDS_LITTLEENDIAN
164 # define WORDS_LITTLEENDIAN 1
167 # define X86_MEMORY 0
171 * Hints to the compiler that a particular branch of code is more or
172 * less likely to be taken.
174 #if defined(__GNUC__) && __GNUC__ >= 3
175 # define likely(x) __builtin_expect(!!(x), 1)
176 # define unlikely(x) __builtin_expect(!!(x), 0)
178 # define likely(x) (!!(x))
179 # define unlikely(x) (!!(x))
183 * How to tell the compiler that a function doesn't return
186 # define no_return void __attribute__((noreturn))
188 # define no_return void
191 #endif /* NASM_COMPILER_H */