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| author | Sverker Eriksson <[email protected]> | 2019-06-19 17:37:23 +0200 |
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| committer | Sverker Eriksson <[email protected]> | 2019-06-19 17:37:23 +0200 |
| commit | a8d573d92e1c83748d1e5d45187c8a379e349fa8 (patch) | |
| tree | f82b4470d0d808ac8b15f4fa1f0cf6b4aad6275a /erts/emulator/hipe | |
| parent | 09e386cd37747c9f6634b061d75910a3e27f3f35 (diff) | |
| parent | dc67b706ea7091caae2d55eab45f59f1d125fa1d (diff) | |
| download | otp-a8d573d92e1c83748d1e5d45187c8a379e349fa8.tar.gz otp-a8d573d92e1c83748d1e5d45187c8a379e349fa8.tar.bz2 otp-a8d573d92e1c83748d1e5d45187c8a379e349fa8.zip | |
Merge branch 'sverker/hipe-x86-flush-icache' into maint
Diffstat (limited to 'erts/emulator/hipe')
| -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 */ |