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_MIPS64 15 16#include "src/assembler.h" 17#include "src/macro-assembler.h" 18 19#include "src/simulator.h" // For cache flushing. 20 21namespace v8 { 22namespace internal { 23 24 25void CpuFeatures::FlushICache(void* start, size_t size) { 26#if !defined(USE_SIMULATOR) 27 // Nothing to do, flushing no instructions. 28 if (size == 0) { 29 return; 30 } 31 32#if defined(ANDROID) && !defined(__LP64__) 33 // Bionic cacheflush can typically run in userland, avoiding kernel call. 34 char *end = reinterpret_cast<char *>(start) + size; 35 cacheflush( 36 reinterpret_cast<intptr_t>(start), reinterpret_cast<intptr_t>(end), 0); 37#else // ANDROID 38 long res; // NOLINT(runtime/int) 39 // See http://www.linux-mips.org/wiki/Cacheflush_Syscall. 40 res = syscall(__NR_cacheflush, start, size, ICACHE); 41 if (res) { 42 V8_Fatal(__FILE__, __LINE__, "Failed to flush the instruction cache"); 43 } 44#endif // ANDROID 45#endif // !USE_SIMULATOR. 46} 47 48} // namespace internal 49} // namespace v8 50 51#endif // V8_TARGET_ARCH_MIPS64 52