1 // Copyright 2012 the V8 project authors. All rights reserved. 2 // Use of this source code is governed by a BSD-style license that can be 3 // found in the LICENSE file. 4 5 // CPU specific code for arm independent of OS goes here. 6 7 #include <sys/syscall.h> 8 #include <unistd.h> 9 10 #ifdef __mips 11 #include <asm/cachectl.h> 12 #endif // #ifdef __mips 13 14 #if V8_TARGET_ARCH_MIPS 15 16 #include "src/codegen/cpu-features.h" 17 18 namespace v8 { 19 namespace internal { 20 FlushICache(void * start,size_t size)21void CpuFeatures::FlushICache(void* start, size_t size) { 22 #if !defined(USE_SIMULATOR) 23 // Nothing to do, flushing no instructions. 24 if (size == 0) { 25 return; 26 } 27 28 #if defined(ANDROID) 29 // Bionic cacheflush can typically run in userland, avoiding kernel call. 30 char* end = reinterpret_cast<char*>(start) + size; 31 cacheflush(reinterpret_cast<intptr_t>(start), reinterpret_cast<intptr_t>(end), 32 0); 33 #else // ANDROID 34 int res; 35 // See http://www.linux-mips.org/wiki/Cacheflush_Syscall. 36 res = syscall(__NR_cacheflush, start, size, ICACHE); 37 if (res) FATAL("Failed to flush the instruction cache"); 38 #endif // ANDROID 39 #endif // !USE_SIMULATOR. 40 } 41 42 } // namespace internal 43 } // namespace v8 44 45 #endif // V8_TARGET_ARCH_MIPS 46