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Diffstat (limited to 'firmware/include/gcc_extensions.h')
-rw-r--r-- | firmware/include/gcc_extensions.h | 46 |
1 files changed, 46 insertions, 0 deletions
diff --git a/firmware/include/gcc_extensions.h b/firmware/include/gcc_extensions.h new file mode 100644 index 0000000000..a58c2e7e45 --- /dev/null +++ b/firmware/include/gcc_extensions.h | |||
@@ -0,0 +1,46 @@ | |||
1 | /*************************************************************************** | ||
2 | * __________ __ ___. | ||
3 | * Open \______ \ ____ ____ | | _\_ |__ _______ ___ | ||
4 | * Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ / | ||
5 | * Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < < | ||
6 | * Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \ | ||
7 | * \/ \/ \/ \/ \/ | ||
8 | * | ||
9 | * Copyright © 2010 Rafaël Carré | ||
10 | * | ||
11 | * This program is free software; you can redistribute it and/or | ||
12 | * modify it under the terms of the GNU General Public License | ||
13 | * as published by the Free Software Foundation; either version 2 | ||
14 | * of the License, or (at your option) any later version. | ||
15 | * | ||
16 | * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY | ||
17 | * KIND, either express or implied. | ||
18 | * | ||
19 | ****************************************************************************/ | ||
20 | |||
21 | #ifndef _GCC_EXTENSIONS_H_ | ||
22 | #define _GCC_EXTENSIONS_H_ | ||
23 | |||
24 | /* Support for some GCC extensions */ | ||
25 | |||
26 | /* Compile time check of format for printf/scanf like functions */ | ||
27 | #ifdef __GNUC__ | ||
28 | #define ATTRIBUTE_PRINTF(fmt, arg1) __attribute__( ( format( printf, fmt, arg1 ) ) ) | ||
29 | #define ATTRIBUTE_SCANF(fmt, arg1) __attribute__( ( format( scanf, fmt, arg1 ) ) ) | ||
30 | #else | ||
31 | #define ATTRIBUTE_PRINTF(fmt, arg1) | ||
32 | #define ATTRIBUTE_SCANF(fmt, arg1) | ||
33 | #endif | ||
34 | |||
35 | |||
36 | /* Use to give gcc hints on which branch is most likely taken */ | ||
37 | #if defined(__GNUC__) && __GNUC__ >= 3 | ||
38 | #define LIKELY(x) __builtin_expect(!!(x), 1) | ||
39 | #define UNLIKELY(x) __builtin_expect(!!(x), 0) | ||
40 | #else | ||
41 | #define LIKELY(x) (x) | ||
42 | #define UNLIKELY(x) (x) | ||
43 | #endif | ||
44 | |||
45 | |||
46 | #endif /* _GCC_EXTENSIONS_H_ */ | ||