| // Copyright 2016 Google Inc. All Rights Reserved. |
| // |
| // Licensed under the Apache License, Version 2.0 (the "License"); |
| // you may not use this file except in compliance with the License. |
| // You may obtain a copy of the License at |
| // |
| // http://www.apache.org/licenses/LICENSE-2.0 |
| // |
| // Unless required by applicable law or agreed to in writing, software |
| // distributed under the License is distributed on an "AS IS" BASIS, |
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| // See the License for the specific language governing permissions and |
| // limitations under the License. |
| |
| #include "starboard/memory.h" |
| |
| #include <sys/mman.h> |
| |
| #include <iomanip> |
| |
| #include "starboard/log.h" |
| |
| #if !SB_CAN(MAP_EXECUTABLE_MEMORY) |
| #error "You shouldn't implement SbMemoryFlush unless you can map " \ |
| "memory pages as executable" |
| #endif |
| |
| void SbMemoryFlush(void* virtual_address, int64_t size_bytes) { |
| char* memory = reinterpret_cast<char*>(virtual_address); |
| #if !SB_IS(ARCH_ARM) |
| int result = msync(memory, size_bytes, MS_SYNC); |
| SB_DCHECK(result == 0) << "msync failed: 0x" << std::hex << result << " (" |
| << std::dec << result << "d)"; |
| #endif |
| |
| #if !defined(__has_builtin) |
| #define __has_builtin(a) (0) |
| #endif |
| |
| #if __has_builtin(__builtin___clear_cache) |
| __builtin___clear_cache(memory, memory + size_bytes); |
| #elif defined(__clear_cache) |
| __clear_cache(memory, memory + size_bytes); |
| #endif |
| } |
