1 // Copyright 2014 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 ppc independent of OS goes here. 6 7 #if V8_TARGET_ARCH_PPC || V8_TARGET_ARCH_PPC64 8 9 #include "src/codegen/cpu-features.h" 10 11 #define INSTR_AND_DATA_CACHE_COHERENCY PPC_6_PLUS 12 13 namespace v8 { 14 namespace internal { 15 FlushICache(void * buffer,size_t size)16void CpuFeatures::FlushICache(void* buffer, size_t size) { 17 #if !defined(USE_SIMULATOR) 18 if (CpuFeatures::IsSupported(INSTR_AND_DATA_CACHE_COHERENCY)) { 19 __asm__ __volatile__( 20 "sync \n" 21 "icbi 0, %0 \n" 22 "isync \n" 23 : /* no output */ 24 : "r"(buffer) 25 : "memory"); 26 return; 27 } 28 29 const int kCacheLineSize = CpuFeatures::icache_line_size(); 30 intptr_t mask = kCacheLineSize - 1; 31 byte* start = 32 reinterpret_cast<byte*>(reinterpret_cast<intptr_t>(buffer) & ~mask); 33 byte* end = static_cast<byte*>(buffer) + size; 34 for (byte* pointer = start; pointer < end; pointer += kCacheLineSize) { 35 __asm__( 36 "dcbf 0, %0 \n" 37 "sync \n" 38 "icbi 0, %0 \n" 39 "isync \n" 40 : /* no output */ 41 : "r"(pointer)); 42 } 43 44 #endif // !USE_SIMULATOR 45 } 46 } // namespace internal 47 } // namespace v8 48 49 #undef INSTR_AND_DATA_CACHE_COHERENCY 50 #endif // V8_TARGET_ARCH_PPC || V8_TARGET_ARCH_PPC64 51