Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 1 | // Copyright 2010 the V8 project authors. All rights reserved. |
| 2 | // Redistribution and use in source and binary forms, with or without |
| 3 | // modification, are permitted provided that the following conditions are |
| 4 | // met: |
| 5 | // |
| 6 | // * Redistributions of source code must retain the above copyright |
| 7 | // notice, this list of conditions and the following disclaimer. |
| 8 | // * Redistributions in binary form must reproduce the above |
| 9 | // copyright notice, this list of conditions and the following |
| 10 | // disclaimer in the documentation and/or other materials provided |
| 11 | // with the distribution. |
| 12 | // * Neither the name of Google Inc. nor the names of its |
| 13 | // contributors may be used to endorse or promote products derived |
| 14 | // from this software without specific prior written permission. |
| 15 | // |
| 16 | // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| 17 | // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| 18 | // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
| 19 | // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
| 20 | // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| 21 | // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
| 22 | // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| 23 | // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| 24 | // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| 25 | // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| 26 | // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| 27 | |
| 28 | // CPU specific code for arm independent of OS goes here. |
| 29 | |
| 30 | #include <sys/syscall.h> |
| 31 | #include <unistd.h> |
| 32 | |
| 33 | #ifdef __mips |
| 34 | #include <asm/cachectl.h> |
| 35 | #endif // #ifdef __mips |
| 36 | |
| 37 | #include "v8.h" |
Leon Clarke | f7060e2 | 2010-06-03 12:02:55 +0100 | [diff] [blame] | 38 | |
| 39 | #if defined(V8_TARGET_ARCH_MIPS) |
| 40 | |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 41 | #include "cpu.h" |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame^] | 42 | #include "macro-assembler.h" |
| 43 | |
| 44 | #include "simulator.h" // For cache flushing. |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 45 | |
| 46 | namespace v8 { |
| 47 | namespace internal { |
| 48 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame^] | 49 | |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 50 | void CPU::Setup() { |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame^] | 51 | CpuFeatures* cpu_features = Isolate::Current()->cpu_features(); |
| 52 | cpu_features->Probe(true); |
| 53 | if (!cpu_features->IsSupported(FPU) || Serializer::enabled()) { |
| 54 | V8::DisableCrankshaft(); |
| 55 | } |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 56 | } |
| 57 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame^] | 58 | |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 59 | void CPU::FlushICache(void* start, size_t size) { |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame^] | 60 | #if !defined (USE_SIMULATOR) |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 61 | int res; |
| 62 | |
| 63 | // See http://www.linux-mips.org/wiki/Cacheflush_Syscall |
| 64 | res = syscall(__NR_cacheflush, start, size, ICACHE); |
| 65 | |
| 66 | if (res) { |
| 67 | V8_Fatal(__FILE__, __LINE__, "Failed to flush the instruction cache"); |
| 68 | } |
| 69 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame^] | 70 | #else // USE_SIMULATOR. |
| 71 | // Not generating mips instructions for C-code. This means that we are |
| 72 | // building a mips emulator based target. We should notify the simulator |
| 73 | // that the Icache was flushed. |
| 74 | // None of this code ends up in the snapshot so there are no issues |
| 75 | // around whether or not to generate the code when building snapshots. |
| 76 | Simulator::FlushICache(Isolate::Current()->simulator_i_cache(), start, size); |
| 77 | #endif // USE_SIMULATOR. |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 78 | } |
| 79 | |
| 80 | |
| 81 | void CPU::DebugBreak() { |
| 82 | #ifdef __mips |
| 83 | asm volatile("break"); |
| 84 | #endif // #ifdef __mips |
| 85 | } |
| 86 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame^] | 87 | |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 88 | } } // namespace v8::internal |
| 89 | |
Leon Clarke | f7060e2 | 2010-06-03 12:02:55 +0100 | [diff] [blame] | 90 | #endif // V8_TARGET_ARCH_MIPS |