diff options
Diffstat (limited to 'include/common.h')
| -rw-r--r-- | include/common.h | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/include/common.h b/include/common.h index 59e66b7f29..af451a3ec9 100644 --- a/include/common.h +++ b/include/common.h @@ -58,6 +58,16 @@ #define __packed __attribute__((packed)) #endif +/* + * Force the toolchain to keep a symbol even with Link Time Optimization + * activated. + * + * Useful for C functions called only from assembly or through special sections. + */ +#ifndef __keep +#define __keep __attribute__((used)) __attribute__((externally_visible)) +#endif + /* There isn't really a better place for this */ #define C_TO_K(temp_c) ((temp_c) + 273) #define K_TO_C(temp_c) ((temp_c) - 273) |