JavaScriptCore-7601.1.46.3.tar.gz

[apple/javascriptcore.git] / ftl / FTLOSRExit.cpp

/*
 * Copyright (C) 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 "FTLOSRExit.h"

#if ENABLE(FTL_JIT)

#include "CodeBlock.h"
#include "DFGBasicBlock.h"
#include "DFGNode.h"
#include "FTLExitArgument.h"
#include "FTLExitArgumentList.h"
#include "FTLJITCode.h"
#include "JSCInlines.h"

namespace JSC { namespace FTL {

using namespace DFG;

OSRExit::OSRExit(
    ExitKind exitKind, ValueFormat profileValueFormat,
    MethodOfGettingAValueProfile valueProfile, CodeOrigin codeOrigin,
    CodeOrigin originForProfile, unsigned numberOfArguments,
    unsigned numberOfLocals)
    : OSRExitBase(exitKind, codeOrigin, originForProfile)
    , m_profileValueFormat(profileValueFormat)
    , m_valueProfile(valueProfile)
    , m_patchableCodeOffset(0)
    , m_values(numberOfArguments, numberOfLocals)
{
}

CodeLocationJump OSRExit::codeLocationForRepatch(CodeBlock* ftlCodeBlock) const
{
    return CodeLocationJump(
        reinterpret_cast<char*>(
            ftlCodeBlock->jitCode()->ftl()->exitThunks().dataLocation()) +
        m_patchableCodeOffset);
}

void OSRExit::validateReferences(const TrackedReferences& trackedReferences)
{
    for (unsigned i = m_values.size(); i--;)
        m_values[i].validateReferences(trackedReferences);
    
    for (ExitTimeObjectMaterialization* materialization : m_materializations)
        materialization->validateReferences(trackedReferences);
}

} } // namespace JSC::FTL

#endif // ENABLE(FTL_JIT)