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* Copyright (C) 2008 Apple Inc. All rights reserved.
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
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* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR
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* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
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* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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#include <wtf/Platform.h>
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#include "CallFrame.h"
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#include "MacroAssemblerCodeRef.h"
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typedef MacroAssemblerCodeRef CodeRef;
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typedef MacroAssemblerCodePtr CodePtr;
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JITCode(const CodeRef ref)
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bool operator !() const
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return !m_ref.m_code.executableAddress();
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CodePtr addressForCall()
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// This function returns the offset in bytes of 'pointerIntoCode' into
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// this block of code. The pointer provided must be a pointer into this
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// block of code. It is ASSERTed that no codeblock >4gb in size.
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unsigned offsetOf(void* pointerIntoCode)
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intptr_t result = reinterpret_cast<intptr_t>(pointerIntoCode) - reinterpret_cast<intptr_t>(m_ref.m_code.executableAddress());
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ASSERT(static_cast<intptr_t>(static_cast<unsigned>(result)) == result);
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return static_cast<unsigned>(result);
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inline JSValue execute(RegisterFile* registerFile, CallFrame* callFrame, JSGlobalData* globalData, JSValue* exception)
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return JSValue::decode(ctiTrampoline(m_ref.m_code.executableAddress(), registerFile, callFrame, exception, Profiler::enabledProfilerReference(), globalData));
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return m_ref.m_code.dataLocation();
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ASSERT(m_ref.m_code.executableAddress());
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ExecutablePool* getExecutablePool()
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return m_ref.m_executablePool.get();
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// Host functions are a bit special; they have a m_code pointer but they
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// do not individully ref the executable pool containing the trampoline.
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static JITCode HostFunction(CodePtr code)
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return JITCode(code.dataLocation(), 0, 0);
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JITCode(void* code, PassRefPtr<ExecutablePool> executablePool, size_t size)
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: m_ref(code, executablePool, size)