| /* |
| * 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) |
| , m_returnType(Cell) |
| , m_stackIndex(stackIndexStart) |
| { |
| } |
| |
| JITStubCall(JIT* jit, JSPropertyNameIterator* (JIT_STUB *stub)(STUB_ARGS_DECLARATION)) |
| : m_jit(jit) |
| , m_stub(stub) |
| , m_returnType(Cell) |
| , m_stackIndex(stackIndexStart) |
| { |
| } |
| |
| JITStubCall(JIT* jit, void* (JIT_STUB *stub)(STUB_ARGS_DECLARATION)) |
| : m_jit(jit) |
| , m_stub(stub) |
| , m_returnType(VoidPtr) |
| , m_stackIndex(stackIndexStart) |
| { |
| } |
| |
| JITStubCall(JIT* jit, int (JIT_STUB *stub)(STUB_ARGS_DECLARATION)) |
| : m_jit(jit) |
| , m_stub(stub) |
| , m_returnType(Int) |
| , m_stackIndex(stackIndexStart) |
| { |
| } |
| |
| JITStubCall(JIT* jit, bool (JIT_STUB *stub)(STUB_ARGS_DECLARATION)) |
| : m_jit(jit) |
| , m_stub(stub) |
| , m_returnType(Int) |
| , m_stackIndex(stackIndexStart) |
| { |
| } |
| |
| JITStubCall(JIT* jit, void (JIT_STUB *stub)(STUB_ARGS_DECLARATION)) |
| : m_jit(jit) |
| , m_stub(stub) |
| , m_returnType(Void) |
| , m_stackIndex(stackIndexStart) |
| { |
| } |
| |
| #if USE(JSVALUE32_64) |
| JITStubCall(JIT* jit, EncodedJSValue (JIT_STUB *stub)(STUB_ARGS_DECLARATION)) |
| : m_jit(jit) |
| , m_stub(stub) |
| , m_returnType(Value) |
| , m_stackIndex(stackIndexStart) |
| { |
| } |
| #endif |
| |
| // Arguments are added first to last. |
| |
| void skipArgument() |
| { |
| m_stackIndex += stackIndexStep; |
| } |
| |
| void addArgument(JIT::Imm32 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) |
| { |
| m_jit->poke(argument, m_stackIndex); |
| m_stackIndex += stackIndexStep; |
| } |
| |
| 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; |
| } |
| |
| 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 = stackIndexStart + (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::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(); |
| } |
| #endif |
| |
| 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.value())); |
| |
| #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 |
| |
| #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; |
| } |
| #else |
| JIT::Call call(unsigned dst) // dst is a virtual register. |
| { |
| ASSERT(m_returnType == VoidPtr || m_returnType == Cell); |
| JIT::Call call = this->call(); |
| m_jit->emitPutVirtualRegister(dst); |
| return call; |
| } |
| #endif |
| |
| JIT::Call call(JIT::RegisterID dst) // dst is a machine register. |
| { |
| #if USE(JSVALUE32_64) |
| ASSERT(m_returnType == Value || m_returnType == VoidPtr || m_returnType == Int || m_returnType == Cell); |
| #else |
| ASSERT(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; |
| static const size_t stackIndexStart = 1; // Index 0 is reserved for restoreArgumentReference(). |
| |
| JIT* m_jit; |
| FunctionPtr m_stub; |
| enum { Void, VoidPtr, Int, Value, Cell } m_returnType; |
| size_t m_stackIndex; |
| }; |
| } |
| |
| #endif // ENABLE(JIT) |
| |
| #endif // JITStubCall_h |
