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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 "MacroAssemblerCodeRef.h"
#if ENABLE(JIT)
namespace JSC {
class JITStubCall {
public:
JITStubCall(JIT* jit, JSObject* (JIT_STUB *stub)(STUB_ARGS_DECLARATION))
: m_jit(jit)
, m_stub(stub)
#if USE(JSVALUE32_64) || !ASSERT_DISABLED
, m_returnType(Cell)
#endif
, m_stackIndex(JITSTACKFRAME_ARGS_INDEX)
{
}
JITStubCall(JIT* jit, JSPropertyNameIterator* (JIT_STUB *stub)(STUB_ARGS_DECLARATION))
: m_jit(jit)
, m_stub(stub)
#if USE(JSVALUE32_64) || !ASSERT_DISABLED
, m_returnType(Cell)
#endif
, m_stackIndex(JITSTACKFRAME_ARGS_INDEX)
{
}
JITStubCall(JIT* jit, void* (JIT_STUB *stub)(STUB_ARGS_DECLARATION))
: m_jit(jit)
, m_stub(stub)
#if USE(JSVALUE32_64) || !ASSERT_DISABLED
, m_returnType(VoidPtr)
#endif
, m_stackIndex(JITSTACKFRAME_ARGS_INDEX)
{
}
JITStubCall(JIT* jit, int (JIT_STUB *stub)(STUB_ARGS_DECLARATION))
: m_jit(jit)
, m_stub(stub)
#if USE(JSVALUE32_64) || !ASSERT_DISABLED
, m_returnType(Int)
#endif
, m_stackIndex(JITSTACKFRAME_ARGS_INDEX)
{
}
JITStubCall(JIT* jit, bool (JIT_STUB *stub)(STUB_ARGS_DECLARATION))
: m_jit(jit)
, m_stub(stub)
#if USE(JSVALUE32_64) || !ASSERT_DISABLED
, m_returnType(Int)
#endif
, m_stackIndex(JITSTACKFRAME_ARGS_INDEX)
{
}
JITStubCall(JIT* jit, void (JIT_STUB *stub)(STUB_ARGS_DECLARATION))
: m_jit(jit)
, m_stub(stub)
#if USE(JSVALUE32_64) || !ASSERT_DISABLED
, m_returnType(Void)
#endif
, m_stackIndex(JITSTACKFRAME_ARGS_INDEX)
{
}
JITStubCall(JIT* jit, EncodedJSValue (JIT_STUB *stub)(STUB_ARGS_DECLARATION))
: m_jit(jit)
, m_stub(stub)
#if USE(JSVALUE32_64) || !ASSERT_DISABLED
, m_returnType(Value)
#endif
, m_stackIndex(JITSTACKFRAME_ARGS_INDEX)
{
}
// Arguments are added first to last.
void skipArgument()
{
m_stackIndex += stackIndexStep;
}
void addArgument(JIT::TrustedImm32 argument)
{
m_jit->poke(argument, m_stackIndex);
m_stackIndex += stackIndexStep;
}
void addArgument(JIT::Imm32 argument)
{
m_jit->poke(argument, m_stackIndex);
m_stackIndex += stackIndexStep;
}
void addArgument(JIT::TrustedImmPtr argument)
{
m_jit->poke(argument, m_stackIndex);
m_stackIndex += stackIndexStep;
}
void addArgument(JIT::ImmPtr argument)
{
m_jit->poke(argument, m_stackIndex);
m_stackIndex += stackIndexStep;
}
void addArgument(JIT::RegisterID argument)
{
#if USE(JSVALUE32_64)
m_jit->poke(argument, m_stackIndex);
#else
m_jit->poke64(argument, m_stackIndex);
#endif
m_stackIndex += stackIndexStep;
}
#if USE(JSVALUE32_64)
void addArgument(const JSValue& value)
{
m_jit->poke(JIT::Imm32(value.payload()), m_stackIndex);
m_jit->poke(JIT::Imm32(value.tag()), m_stackIndex + 1);
m_stackIndex += stackIndexStep;
}
#else
void addArgument(JIT::TrustedImm64 argument)
{
m_jit->poke(argument, m_stackIndex);
m_stackIndex += stackIndexStep;
}
void addArgument(JIT::Imm64 argument)
{
m_jit->poke(argument, m_stackIndex);
m_stackIndex += stackIndexStep;
}
#endif
void addArgument(JIT::RegisterID tag, JIT::RegisterID payload)
{
m_jit->poke(payload, m_stackIndex);
m_jit->poke(tag, m_stackIndex + 1);
m_stackIndex += stackIndexStep;
}
#if USE(JSVALUE32_64)
void addArgument(unsigned srcVirtualRegister)
{
if (m_jit->m_codeBlock->isConstantRegisterIndex(srcVirtualRegister)) {
addArgument(m_jit->getConstantOperand(srcVirtualRegister));
return;
}
m_jit->emitLoad(srcVirtualRegister, JIT::regT1, JIT::regT0);
addArgument(JIT::regT1, JIT::regT0);
}
void getArgument(size_t argumentNumber, JIT::RegisterID tag, JIT::RegisterID payload)
{
size_t stackIndex = JITSTACKFRAME_ARGS_INDEX + (argumentNumber * stackIndexStep);
m_jit->peek(payload, stackIndex);
m_jit->peek(tag, stackIndex + 1);
}
#else
void addArgument(unsigned src, JIT::RegisterID scratchRegister) // src is a virtual register.
{
if (m_jit->m_codeBlock->isConstantRegisterIndex(src))
addArgument(JIT::Imm64(JSValue::encode(m_jit->m_codeBlock->getConstant(src))));
else {
m_jit->load64(JIT::Address(JIT::callFrameRegister, src * sizeof(Register)), scratchRegister);
addArgument(scratchRegister);
}
m_jit->killLastResultRegister();
}
#endif
JIT::Call call()
{
#if ENABLE(OPCODE_SAMPLING)
if (m_jit->m_bytecodeOffset != (unsigned)-1)
m_jit->sampleInstruction(m_jit->m_codeBlock->instructions().begin() + m_jit->m_bytecodeOffset, true);
#endif
m_jit->restoreArgumentReference();
m_jit->updateTopCallFrame();
JIT::Call call = m_jit->call();
m_jit->m_calls.append(CallRecord(call, m_jit->m_bytecodeOffset, m_stub.value()));
#if ENABLE(OPCODE_SAMPLING)
if (m_jit->m_bytecodeOffset != (unsigned)-1)
m_jit->sampleInstruction(m_jit->m_codeBlock->instructions().begin() + m_jit->m_bytecodeOffset, false);
#endif
#if USE(JSVALUE32_64)
m_jit->unmap();
#else
m_jit->killLastResultRegister();
#endif
return call;
}
#if USE(JSVALUE32_64)
JIT::Call call(unsigned dst) // dst is a virtual register.
{
ASSERT(m_returnType == Value || m_returnType == Cell);
JIT::Call call = this->call();
if (m_returnType == Value)
m_jit->emitStore(dst, JIT::regT1, JIT::regT0);
else
m_jit->emitStoreCell(dst, JIT::returnValueRegister);
return call;
}
JIT::Call callWithValueProfiling(unsigned dst)
{
ASSERT(m_returnType == Value || m_returnType == Cell);
JIT::Call call = this->call();
ASSERT(JIT::returnValueRegister == JIT::regT0);
if (m_returnType == Cell)
m_jit->move(JIT::TrustedImm32(JSValue::CellTag), JIT::regT1);
m_jit->emitValueProfilingSite();
if (m_returnType == Value)
m_jit->emitStore(dst, JIT::regT1, JIT::regT0);
else
m_jit->emitStoreCell(dst, JIT::returnValueRegister);
return call;
}
#else
JIT::Call call(unsigned dst) // dst is a virtual register.
{
ASSERT(m_returnType == Value || m_returnType == Cell);
JIT::Call call = this->call();
m_jit->emitPutVirtualRegister(dst);
return call;
}
JIT::Call callWithValueProfiling(unsigned dst)
{
ASSERT(m_returnType == Value || m_returnType == Cell);
JIT::Call call = this->call();
ASSERT(JIT::returnValueRegister == JIT::regT0);
m_jit->emitValueProfilingSite();
m_jit->emitPutVirtualRegister(dst);
return call;
}
#endif
JIT::Call call(JIT::RegisterID dst) // dst is a machine register.
{
#if USE(JSVALUE32_64) || !ASSERT_DISABLED
ASSERT(m_returnType == Value || m_returnType == VoidPtr || m_returnType == Int || m_returnType == Cell);
#endif
JIT::Call call = this->call();
if (dst != JIT::returnValueRegister)
m_jit->move(JIT::returnValueRegister, dst);
return call;
}
private:
static const size_t stackIndexStep = sizeof(EncodedJSValue) == 2 * sizeof(void*) ? 2 : 1;
JIT* m_jit;
FunctionPtr m_stub;
#if USE(JSVALUE32_64) || !ASSERT_DISABLED
enum { Void, VoidPtr, Int, Value, Cell } m_returnType;
#endif
size_t m_stackIndex;
};
}
#endif // ENABLE(JIT)
#endif // JITStubCall_h
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