C++ (Cpp) emitDumbVirtualCall示例

示例#1

文件： JITCall.cpp 项目： ollie314/webkit

void JIT::compileCallEvalSlowCase(Instruction* instruction, Vector<SlowCaseEntry>::iterator& iter)
{
    CallLinkInfo* info = m_codeBlock->addCallLinkInfo();
    info->setUpCall(CallLinkInfo::Call, CodeOrigin(m_bytecodeOffset), regT0);

    linkSlowCase(iter);
    int registerOffset = -instruction[4].u.operand;

    addPtr(TrustedImm32(registerOffset * sizeof(Register) + sizeof(CallerFrameAndPC)), callFrameRegister, stackPointerRegister);

    load64(Address(stackPointerRegister, sizeof(Register) * CallFrameSlot::callee - sizeof(CallerFrameAndPC)), regT0);
    emitDumbVirtualCall(info);
    addPtr(TrustedImm32(stackPointerOffsetFor(m_codeBlock) * sizeof(Register)), callFrameRegister, stackPointerRegister);
    checkStackPointerAlignment();

    sampleCodeBlock(m_codeBlock);
    
    emitPutCallResult(instruction);
}

示例#2

文件： JITCall32_64.cpp 项目： wolfviking0/webcl-webkit

void JIT::compileCallEvalSlowCase(const Instruction* instruction, Vector<SlowCaseEntry>::iterator& iter)
{
    linkAllSlowCases(iter);

    auto bytecode = instruction->as<OpCallEval>();
    CallLinkInfo* info = m_codeBlock->addCallLinkInfo();
    info->setUpCall(CallLinkInfo::Call, CodeOrigin(m_bytecodeOffset), regT0);

    int registerOffset = -bytecode.m_argv;
    int callee = bytecode.m_callee.offset();

    addPtr(TrustedImm32(registerOffset * sizeof(Register) + sizeof(CallerFrameAndPC)), callFrameRegister, stackPointerRegister);

    emitLoad(callee, regT1, regT0);
    emitDumbVirtualCall(*vm(), info);
    addPtr(TrustedImm32(stackPointerOffsetFor(m_codeBlock) * sizeof(Register)), callFrameRegister, stackPointerRegister);
    checkStackPointerAlignment();

    sampleCodeBlock(m_codeBlock);
    
    emitPutCallResult(bytecode);
}