| /* |
| * Copyright (c) 2008 Travis Geiselbrecht |
| * |
| * Permission is hereby granted, free of charge, to any person obtaining |
| * a copy of this software and associated documentation files |
| * (the "Software"), to deal in the Software without restriction, |
| * including without limitation the rights to use, copy, modify, merge, |
| * publish, distribute, sublicense, and/or sell copies of the Software, |
| * and to permit persons to whom the Software is furnished to do so, |
| * subject to the following conditions: |
| * |
| * The above copyright notice and this permission notice shall be |
| * included in all copies or substantial portions of the Software. |
| * |
| * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, |
| * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF |
| * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. |
| * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY |
| * CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, |
| * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE |
| * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. |
| */ |
| #ifndef __COMPILER_H |
| #define __COMPILER_H |
| |
| #ifndef __ASSEMBLY__ |
| |
| #if __GNUC__ |
| #define likely(x) __builtin_expect(!!(x), 1) |
| #define unlikely(x) __builtin_expect(!!(x), 0) |
| #define __UNUSED __attribute__((__unused__)) |
| #define __PACKED __attribute__((packed)) |
| #define __ALIGNED(x) __attribute__((aligned(x))) |
| #define __PRINTFLIKE(__fmt,__varargs) __attribute__((__format__ (__printf__, __fmt, __varargs))) |
| #define __SCANFLIKE(__fmt,__varargs) __attribute__((__format__ (__scanf__, __fmt, __varargs))) |
| #define __SECTION(x) __attribute((section(x))) |
| #define __PURE __attribute((pure)) |
| #define __CONST __attribute((const)) |
| #define __NO_RETURN __attribute__((noreturn)) |
| #define __MALLOC __attribute__((malloc)) |
| #define __WEAK __attribute__((weak)) |
| #define __GNU_INLINE __attribute__((gnu_inline)) |
| #define __GET_CALLER(x) __builtin_return_address(0) |
| |
| /* look for gcc 3.0 and above */ |
| #if (__GNUC__ > 3) || (__GNUC__ == 3 && __GNUC_MINOR__ >= 0) |
| #define __ALWAYS_INLINE __attribute__((always_inline)) |
| #else |
| #define __ALWAYS_INLINE |
| #endif |
| |
| /* look for gcc 3.1 and above */ |
| #if !defined(__DEPRECATED) // seems to be built in in some versions of the compiler |
| #if (__GNUC__ > 3) || (__GNUC__ == 3 && __GNUC_MINOR__ >= 1) |
| #define __DEPRECATED __attribute((deprecated)) |
| #else |
| #define __DEPRECATED |
| #endif |
| #endif |
| |
| /* look for gcc 3.3 and above */ |
| #if (__GNUC__ > 3) || (__GNUC__ == 3 && __GNUC_MINOR__ >= 3) |
| /* the may_alias attribute was introduced in gcc 3.3; before that, there |
| * was no way to specify aliasiang rules on a type-by-type basis */ |
| #define __MAY_ALIAS __attribute__((may_alias)) |
| |
| /* nonnull was added in gcc 3.3 as well */ |
| #define __NONNULL(x) __attribute((nonnull x)) |
| #else |
| #define __MAY_ALIAS |
| #define __NONNULL(x) |
| #endif |
| |
| /* look for gcc 3.4 and above */ |
| #if (__GNUC__ > 3) || (__GNUC__ == 3 && __GNUC_MINOR__ >= 4) |
| #define __WARN_UNUSED_RESULT __attribute((warn_unused_result)) |
| #else |
| #define __WARN_UNUSED_RESULT |
| #endif |
| |
| #if (__GNUC__ > 4) || (__GNUC__ == 4 && __GNUC_MINOR__ >= 1) |
| #define __EXTERNALLY_VISIBLE __attribute__((externally_visible)) |
| #else |
| #define __EXTERNALLY_VISIBLE |
| #endif |
| |
| #else |
| |
| #define likely(x) (x) |
| #define unlikely(x) (x) |
| #define __UNUSED |
| #define __PACKED |
| #define __ALIGNED(x) |
| #define __PRINTFLIKE(__fmt,__varargs) |
| #define __SCANFLIKE(__fmt,__varargs) |
| #define __SECTION(x) |
| #define __PURE |
| #define __CONST |
| #define __NONNULL(x) |
| #define __DEPRECATED |
| #define __WARN_UNUSED_RESULT |
| #define __ALWAYS_INLINE |
| #define __MAY_ALIAS |
| #define __NO_RETURN |
| #endif |
| |
| #endif |
| |
| #endif |