| //===-- clear_cache.c - Implement __clear_cache ---------------------------===// |
| // |
| // The LLVM Compiler Infrastructure |
| // |
| // This file is distributed under the University of Illinois Open Source |
| // License. See LICENSE.TXT for details. |
| // |
| //===----------------------------------------------------------------------===// |
| |
| #include <stdlib.h> |
| |
| #if __APPLE__ |
| #include <libkern/OSCacheControl.h> |
| #endif |
| |
| // |
| // The compiler generates calls to __clear_cache() when creating |
| // trampoline functions on the stack for use with nested functions. |
| // It is expected to invalidate the instruction cache for the |
| // specified range. |
| // |
| void __clear_cache(void* start, void* end) |
| { |
| #if __i386__ || __x86_64__ |
| // |
| // Intel processors have a unified instruction and data cache |
| // so there is nothing to do |
| // |
| #else |
| #if __APPLE__ |
| // On Darwin, sys_icache_invalidate() provides this functionality |
| sys_icache_invalidate(start, end-start); |
| #else |
| abort(); |
| #endif |
| #endif |
| } |
| |