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/*
* Copyright (C) 2008 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.
*/
#ifndef JITStubCall_h
#define JITStubCall_h
#include <wtf/Platform.h>
#if ENABLE(JIT)
namespace JSC {
class JITStubCall {
public:
JITStubCall(JIT* jit, JSObject* (JIT_STUB *stub)(STUB_ARGS_DECLARATION))
: m_jit(jit)
, m_stub(reinterpret_cast<void*>(stub))
, m_returnType(Value)
, m_argumentIndex(1) // Index 0 is reserved for restoreArgumentReference();
{
}
JITStubCall(JIT* jit, JSPropertyNameIterator* (JIT_STUB *stub)(STUB_ARGS_DECLARATION))
: m_jit(jit)
, m_stub(reinterpret_cast<void*>(stub))
, m_returnType(Value)
, m_argumentIndex(1) // Index 0 is reserved for restoreArgumentReference();
{
}
JITStubCall(JIT* jit, void* (JIT_STUB *stub)(STUB_ARGS_DECLARATION))
: m_jit(jit)
, m_stub(reinterpret_cast<void*>(stub))
, m_returnType(Value)
, m_argumentIndex(1) // Index 0 is reserved for restoreArgumentReference();
{
}
JITStubCall(JIT* jit, int (JIT_STUB *stub)(STUB_ARGS_DECLARATION))
: m_jit(jit)
, m_stub(reinterpret_cast<void*>(stub))
, m_returnType(Value)
, m_argumentIndex(1) // Index 0 is reserved for restoreArgumentReference();
{
}
JITStubCall(JIT* jit, void (JIT_STUB *stub)(STUB_ARGS_DECLARATION))
: m_jit(jit)
, m_stub(reinterpret_cast<void*>(stub))
, m_returnType(Void)
, m_argumentIndex(1) // Index 0 is reserved for restoreArgumentReference();
{
}
// Arguments are added first to last.
void addArgument(JIT::Imm32 argument)
{
m_jit->poke(argument, m_argumentIndex);
++m_argumentIndex;
}
void addArgument(JIT::ImmPtr argument)
{
m_jit->poke(argument, m_argumentIndex);
++m_argumentIndex;
}
void addArgument(JIT::RegisterID argument)
{
m_jit->poke(argument, m_argumentIndex);
++m_argumentIndex;
}
void addArgument(unsigned src, JIT::RegisterID scratchRegister) // src is a virtual register.
{
if (m_jit->m_codeBlock->isConstantRegisterIndex(src))
addArgument(JIT::ImmPtr(JSValue::encode(m_jit->m_codeBlock->getConstant(src))));
else {
m_jit->loadPtr(JIT::Address(JIT::callFrameRegister, src * sizeof(Register)), scratchRegister);
addArgument(scratchRegister);
}
m_jit->killLastResultRegister();
}
JIT::Call call()
{
#if ENABLE(OPCODE_SAMPLING)
if (m_jit->m_bytecodeIndex != (unsigned)-1)
m_jit->sampleInstruction(m_jit->m_codeBlock->instructions().begin() + m_jit->m_bytecodeIndex, true);
#endif
m_jit->restoreArgumentReference();
JIT::Call call = m_jit->call();
m_jit->m_calls.append(CallRecord(call, m_jit->m_bytecodeIndex, m_stub));
#if ENABLE(OPCODE_SAMPLING)
if (m_jit->m_bytecodeIndex != (unsigned)-1)
m_jit->sampleInstruction(m_jit->m_codeBlock->instructions().begin() + m_jit->m_bytecodeIndex, false);
#endif
m_jit->killLastResultRegister();
return call;
}
JIT::Call call(unsigned dst) // dst is a virtual register.
{
ASSERT(m_returnType == Value);
JIT::Call call = this->call();
m_jit->emitPutVirtualRegister(dst);
return call;
}
JIT::Call call(JIT::RegisterID dst)
{
ASSERT(m_returnType == Value);
JIT::Call call = this->call();
if (dst != JIT::returnValueRegister)
m_jit->move(JIT::returnValueRegister, dst);
return call;
}
private:
JIT* m_jit;
void* m_stub;
enum { Value, Void } m_returnType;
size_t m_argumentIndex;
};
class CallEvalJITStub : public JITStubCall {
public:
CallEvalJITStub(JIT* jit, Instruction* instruction)
: JITStubCall(jit, JITStubs::cti_op_call_eval)
{
int callee = instruction[2].u.operand;
int argCount = instruction[3].u.operand;
int registerOffset = instruction[4].u.operand;
addArgument(callee, JIT::regT2);
addArgument(JIT::Imm32(registerOffset));
addArgument(JIT::Imm32(argCount));
}
};
}
#endif // ENABLE(JIT)
#endif // JITStubCall_h
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