1e42e70021
conversion in bit operation stubs. Disable serialization support by default to allow us to use SSE3 instructions and faster write barrier code when running without snapshot. Review URL: http://codereview.chromium.org/27046 git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@1364 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
66 lines
2.5 KiB
C++
66 lines
2.5 KiB
C++
// Copyright 2006-2008 the V8 project authors. All rights reserved.
|
|
// Redistribution and use in source and binary forms, with or without
|
|
// modification, are permitted provided that the following conditions are
|
|
// met:
|
|
//
|
|
// * Redistributions of source code must retain the above copyright
|
|
// notice, this list of conditions and the following disclaimer.
|
|
// * Redistributions in binary form must reproduce the above
|
|
// copyright notice, this list of conditions and the following
|
|
// disclaimer in the documentation and/or other materials provided
|
|
// with the distribution.
|
|
// * Neither the name of Google Inc. nor the names of its
|
|
// contributors may be used to endorse or promote products derived
|
|
// from this software without specific prior written permission.
|
|
//
|
|
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
|
|
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
|
|
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
|
|
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
|
|
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
|
|
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
|
|
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
|
|
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
|
|
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
|
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
|
|
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
|
|
|
// CPU specific code for ia32 independent of OS goes here.
|
|
|
|
#include "v8.h"
|
|
|
|
#include "cpu.h"
|
|
#include "macro-assembler.h"
|
|
|
|
namespace v8 { namespace internal {
|
|
|
|
void CPU::Setup() {
|
|
CpuFeatures::Probe();
|
|
}
|
|
|
|
|
|
void CPU::FlushICache(void* start, size_t size) {
|
|
// No need to flush the instruction cache on Intel. On Intel instruction
|
|
// cache flushing is only necessary when multiple cores running the same
|
|
// code simultaneously. V8 (and JavaScript) is single threaded and when code
|
|
// is patched on an intel CPU the core performing the patching will have its
|
|
// own instruction cache updated automatically.
|
|
|
|
// If flushing of the instruction cache becomes necessary Windows have the
|
|
// API function FlushInstructionCache.
|
|
}
|
|
|
|
|
|
void CPU::DebugBreak() {
|
|
#ifdef _MSC_VER
|
|
// To avoid Visual Studio runtime support the following code can be used
|
|
// instead
|
|
// __asm { int 3 }
|
|
__debugbreak();
|
|
#else
|
|
asm("int $3");
|
|
#endif
|
|
}
|
|
|
|
} } // namespace v8::internal
|