ag/cpython-source-deps
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

Darwin/aarch64: Use Clang cache invalidation builtin

Browse Source
This commit is contained in:
Zachary Waldowski
2013-11-30 02:08:14 -05:00
parent 9fa7998d5f
commit 4260badc37
1 changed files with 16 additions and 1 deletions
Download Patch File Download Diff File Expand all files Collapse all files

17
src/aarch64/ffi.c
View File

@@ -49,6 +49,21 @@ struct call_context
} v [AARCH64_N_VREG];
};
#if defined(__clang__) && defined(__APPLE__)
void sys_icache_invalidate(void *start, size_t len);
#endif
static inline void ffi_clear_cache(void *start, void *end)
{
#if defined(__clang__) && defined(__APPLE__)
sys_icache_invalidate(start, (char *)end-(char *)start);
#elif defined(__GNUC__)
__builtin___clear_cache(start, end);
#else
#error "Missing builtin to flush instruction cache"
#endif
}
static void *
get_x_addr (struct call_context *context, unsigned n)
{
@@ -840,7 +855,7 @@ static unsigned char trampoline [] =
memcpy (__tramp + 12, &__fun, sizeof (__fun)); \
memcpy (__tramp + 20, &__ctx, sizeof (__ctx)); \
memcpy (__tramp + 28, &__flags, sizeof (__flags)); \
__clear_cache(__tramp, __tramp + FFI_TRAMPOLINE_SIZE); \
ffi_clear_cache(__tramp, __tramp + FFI_TRAMPOLINE_SIZE); \
})
ffi_status