Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 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 | #include "src/v8.h" |
| 15 | |
| 16 | #if V8_TARGET_ARCH_MIPS64 |
| 17 | |
| 18 | #include "src/assembler.h" |
| 19 | #include "src/macro-assembler.h" |
| 20 | |
| 21 | #include "src/simulator.h" // For cache flushing. |
| 22 | |
| 23 | namespace v8 { |
| 24 | namespace internal { |
| 25 | |
| 26 | |
| 27 | void CpuFeatures::FlushICache(void* start, size_t size) { |
| 28 | // Nothing to do, flushing no instructions. |
| 29 | if (size == 0) { |
| 30 | return; |
| 31 | } |
| 32 | |
| 33 | #if !defined (USE_SIMULATOR) |
| 34 | #if defined(ANDROID) && !defined(__LP64__) |
| 35 | // Bionic cacheflush can typically run in userland, avoiding kernel call. |
| 36 | char *end = reinterpret_cast<char *>(start) + size; |
| 37 | cacheflush( |
| 38 | reinterpret_cast<intptr_t>(start), reinterpret_cast<intptr_t>(end), 0); |
| 39 | #else // ANDROID |
| 40 | int res; |
| 41 | // See http://www.linux-mips.org/wiki/Cacheflush_Syscall. |
| 42 | res = syscall(__NR_cacheflush, start, size, ICACHE); |
| 43 | if (res) { |
| 44 | V8_Fatal(__FILE__, __LINE__, "Failed to flush the instruction cache"); |
| 45 | } |
| 46 | #endif // ANDROID |
| 47 | #else // USE_SIMULATOR. |
| 48 | // Not generating mips instructions for C-code. This means that we are |
| 49 | // building a mips emulator based target. We should notify the simulator |
| 50 | // that the Icache was flushed. |
| 51 | // None of this code ends up in the snapshot so there are no issues |
| 52 | // around whether or not to generate the code when building snapshots. |
| 53 | Simulator::FlushICache(Isolate::Current()->simulator_i_cache(), start, size); |
| 54 | #endif // USE_SIMULATOR. |
| 55 | } |
| 56 | |
| 57 | } } // namespace v8::internal |
| 58 | |
| 59 | #endif // V8_TARGET_ARCH_MIPS64 |