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Copy pathFTLJITCode.cpp
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131 lines (109 loc) · 3.34 KB
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/*
* 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 "FTLJITCode.h"
#if ENABLE(FTL_JIT)
namespace JSC { namespace FTL {
JITCode::JITCode()
: JSC::JITCode(FTLJIT)
{
}
JITCode::~JITCode()
{
}
void JITCode::initializeExitThunks(CodeRef exitThunks)
{
m_exitThunks = exitThunks;
}
void JITCode::addHandle(PassRefPtr<ExecutableMemoryHandle> handle)
{
m_handles.append(handle);
}
void JITCode::addDataSection(PassRefPtr<DataSection> dataSection)
{
m_dataSections.append(dataSection);
}
void JITCode::initializeArityCheckEntrypoint(CodeRef entrypoint)
{
m_arityCheckEntrypoint = entrypoint;
}
void JITCode::initializeAddressForCall(CodePtr address)
{
m_addressForCall = address;
}
JITCode::CodePtr JITCode::addressForCall(VM&, ExecutableBase*, ArityCheckMode arityCheck, RegisterPreservationMode)
{
switch (arityCheck) {
case ArityCheckNotRequired:
return m_addressForCall;
case MustCheckArity:
return m_arityCheckEntrypoint.code();
}
RELEASE_ASSERT_NOT_REACHED();
return CodePtr();
}
void* JITCode::executableAddressAtOffset(size_t offset)
{
return reinterpret_cast<char*>(m_addressForCall.executableAddress()) + offset;
}
void* JITCode::dataAddressAtOffset(size_t)
{
// We can't patch FTL code, yet. Even if we did, it's not clear that we would do so
// through this API.
RELEASE_ASSERT_NOT_REACHED();
return 0;
}
unsigned JITCode::offsetOf(void*)
{
// We currently don't have visibility into the FTL code.
RELEASE_ASSERT_NOT_REACHED();
return 0;
}
size_t JITCode::size()
{
// We don't know the size of FTL code, yet. Make a wild guess. This is mostly used for
// GC load estimates.
return 1000;
}
bool JITCode::contains(void*)
{
// We have no idea what addresses the FTL code contains, yet.
RELEASE_ASSERT_NOT_REACHED();
return false;
}
JITCode::CodePtr JITCode::exitThunks()
{
return m_exitThunks.code();
}
JITCode* JITCode::ftl()
{
return this;
}
DFG::CommonData* JITCode::dfgCommon()
{
return &common;
}
} } // namespace JSC::FTL
#endif // ENABLE(FTL_JIT)