| // Copyright (c) 2012, the Dart project authors. Please see the AUTHORS file |
| // for details. All rights reserved. Use of this source code is governed by a |
| // BSD-style license that can be found in the LICENSE file. |
| |
| #include "vm/globals.h" |
| |
| #if defined(TARGET_ARCH_ARM) |
| |
| #if defined(HOST_ARCH_ARM) |
| #include <sys/syscall.h> /* NOLINT */ |
| #include <unistd.h> /* NOLINT */ |
| #endif |
| |
| #include "vm/cpu.h" |
| |
| namespace dart { |
| |
| void CPU::FlushICache(uword start, uword size) { |
| #if defined(HOST_ARCH_ARM) |
| // Nothing to do. Flushing no instructions. |
| if (size == 0) { |
| return; |
| } |
| |
| // ARM recommends using the gcc intrinsic __clear_cache on Linux, and the |
| // library call cacheflush from unistd.h on Android: |
| // blogs.arm.com/software-enablement/141-caches-and-self-modifying-code/ |
| #if defined(__linux__) && !defined(ANDROID) |
| extern void __clear_cache(char*, char*); |
| char* beg = reinterpret_cast<char*>(start); |
| char* end = reinterpret_cast<char*>(start + size); |
| ::__clear_cache(beg, end); |
| #elif defined(ANDROID) |
| cacheflush(start, start + size, 0); |
| #else |
| #error FlushICache only tested/supported on Linux and Android |
| #endif |
| |
| #endif |
| } |
| |
| |
| const char* CPU::Id() { |
| return |
| #if !defined(HOST_ARCH_ARM) |
| "sim" |
| #endif // !defined(HOST_ARCH_ARM) |
| "arm"; |
| } |
| |
| } // namespace dart |
| |
| #endif // defined TARGET_ARCH_ARM |