/* * Copyright (C) 2011, 2013 Apple Inc. All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. 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. * * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``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 APPLE INC. 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. */ #include "config.h" #include "DFGOSRExit.h" #if ENABLE(DFG_JIT) #include "AssemblyHelpers.h" #include "DFGGraph.h" #include "DFGSpeculativeJIT.h" #include "JSCInlines.h" namespace JSC { namespace DFG { OSRExit::OSRExit(ExitKind kind, JSValueSource jsValueSource, MethodOfGettingAValueProfile valueProfile, SpeculativeJIT* jit, unsigned streamIndex, unsigned recoveryIndex) : OSRExitBase(kind, jit->m_codeOriginForExitTarget, jit->m_codeOriginForExitProfile) , m_jsValueSource(jsValueSource) , m_valueProfile(valueProfile) , m_patchableCodeOffset(0) , m_recoveryIndex(recoveryIndex) , m_streamIndex(streamIndex) { ASSERT(m_codeOrigin.isSet()); } void OSRExit::setPatchableCodeOffset(MacroAssembler::PatchableJump check) { m_patchableCodeOffset = check.m_jump.m_label.m_offset; } MacroAssembler::Jump OSRExit::getPatchableCodeOffsetAsJump() const { return MacroAssembler::Jump(AssemblerLabel(m_patchableCodeOffset)); } CodeLocationJump OSRExit::codeLocationForRepatch(CodeBlock* dfgCodeBlock) const { return CodeLocationJump(dfgCodeBlock->jitCode()->dataAddressAtOffset(m_patchableCodeOffset)); } void OSRExit::correctJump(LinkBuffer& linkBuffer) { MacroAssembler::Label label; label.m_label.m_offset = m_patchableCodeOffset; m_patchableCodeOffset = linkBuffer.offsetOf(label); } } } // namespace JSC::DFG #endif // ENABLE(DFG_JIT)