1 // Copyright 2021 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 LoongArch independent of OS goes here. 6 7 #include <sys/syscall.h> 8 #include <unistd.h> 9 10 #if V8_TARGET_ARCH_LOONG64 11 12 #include "src/codegen/cpu-features.h" 13 14 namespace v8 { 15 namespace internal { 16 FlushICache(void * start,size_t size)17void CpuFeatures::FlushICache(void* start, size_t size) { 18 #if defined(V8_HOST_ARCH_LOONG64) 19 // Nothing to do, flushing no instructions. 20 if (size == 0) { 21 return; 22 } 23 24 #if defined(ANDROID) && !defined(__LP64__) 25 // Bionic cacheflush can typically run in userland, avoiding kernel call. 26 char* end = reinterpret_cast<char*>(start) + size; 27 cacheflush(reinterpret_cast<intptr_t>(start), reinterpret_cast<intptr_t>(end), 28 0); 29 #else // ANDROID 30 asm("ibar 0\n"); 31 #endif // ANDROID 32 #endif // V8_HOST_ARCH_LOONG64 33 } 34 35 } // namespace internal 36 } // namespace v8 37 38 #endif // V8_TARGET_ARCH_LOONG64 39