diff options
Diffstat (limited to 'erts/emulator/hipe/hipe_x86.h')
| -rw-r--r-- | erts/emulator/hipe/hipe_x86.h | 25 |
1 files changed, 18 insertions, 7 deletions
diff --git a/erts/emulator/hipe/hipe_x86.h b/erts/emulator/hipe/hipe_x86.h index 8967793171..a1fe75e792 100644 --- a/erts/emulator/hipe/hipe_x86.h +++ b/erts/emulator/hipe/hipe_x86.h @@ -22,17 +22,28 @@ #ifndef HIPE_X86_H #define HIPE_X86_H -static __inline__ void hipe_flush_icache_word(void *address) -{ - /* Do nothing. This works as long as compiled code is - executed by a single CPU thread. */ -} +#ifndef __has_builtin +# define __has_builtin(x) 0 +#endif static __inline__ void hipe_flush_icache_range(void *address, unsigned int nbytes) { - /* Do nothing. This works as long as compiled code is - executed by a single CPU thread. */ + void* end = (char*)address + nbytes; + +#if ERTS_AT_LEAST_GCC_VSN__(4, 3, 0) || __has_builtin(__builtin___clear_cache) + __builtin___clear_cache(address, end); +#elif defined(__clang__) + void __clear_cache(void *start, void *end); + __clear_cache(address, end); +#else +# warning "Don't know how to flush instruction cache" +#endif +} + +static __inline__ void hipe_flush_icache_word(void *address) +{ + hipe_flush_icache_range(address, sizeof(void*)); } /* for stack descriptor hash lookup */ |