C++ (Cpp) emitGetFromCallFrameHeaderPtr Beispiele

Beispiel #1

Datei: JITCall32_64.cpp Projekt: youtube/h5vcc_hh

void JIT::emit_op_ret_object_or_this(Instruction* currentInstruction)
{
    unsigned result = currentInstruction[1].u.operand;
    unsigned thisReg = currentInstruction[2].u.operand;

    // We could JIT generate the deref, only calling out to C when the refcount hits zero.
    if (m_codeBlock->needsFullScopeChain())
        JITStubCall(this, cti_op_ret_scopeChain).call();

    emitLoad(result, regT1, regT0);
    Jump notJSCell = branch32(NotEqual, regT1, Imm32(JSValue::CellTag));
    loadPtr(Address(regT0, OBJECT_OFFSETOF(JSCell, m_structure)), regT2);
    Jump notObject = branch8(NotEqual, Address(regT2, OBJECT_OFFSETOF(Structure, m_typeInfo) + OBJECT_OFFSETOF(TypeInfo, m_type)), Imm32(ObjectType));

    emitGetFromCallFrameHeaderPtr(RegisterFile::ReturnPC, regT2);
    emitGetFromCallFrameHeaderPtr(RegisterFile::CallerFrame, callFrameRegister);

    restoreReturnAddressBeforeReturn(regT2);
    ret();

    notJSCell.link(this);
    notObject.link(this);
    emitLoad(thisReg, regT1, regT0);

    emitGetFromCallFrameHeaderPtr(RegisterFile::ReturnPC, regT2);
    emitGetFromCallFrameHeaderPtr(RegisterFile::CallerFrame, callFrameRegister);

    restoreReturnAddressBeforeReturn(regT2);
    ret();
}

Beispiel #2

void JIT::emit_op_ret_object_or_this(Instruction* currentInstruction)
{
    unsigned result = currentInstruction[1].u.operand;
    unsigned thisReg = currentInstruction[2].u.operand;

    emitLoad(result, regT1, regT0);
    Jump notJSCell = branch32(NotEqual, regT1, TrustedImm32(JSValue::CellTag));
    loadPtr(Address(regT0, JSCell::structureOffset()), regT2);
    Jump notObject = emitJumpIfNotObject(regT2);

    emitGetFromCallFrameHeaderPtr(JSStack::ReturnPC, regT2);
    emitGetFromCallFrameHeaderPtr(JSStack::CallerFrame, callFrameRegister);

    restoreReturnAddressBeforeReturn(regT2);
    ret();

    notJSCell.link(this);
    notObject.link(this);
    emitLoad(thisReg, regT1, regT0);

    emitGetFromCallFrameHeaderPtr(JSStack::ReturnPC, regT2);
    emitGetFromCallFrameHeaderPtr(JSStack::CallerFrame, callFrameRegister);

    restoreReturnAddressBeforeReturn(regT2);
    ret();
}

Beispiel #3

void JIT::emit_op_ret(Instruction* currentInstruction)
{
    unsigned dst = currentInstruction[1].u.operand;

    emitLoad(dst, regT1, regT0);
    emitGetFromCallFrameHeaderPtr(JSStack::ReturnPC, regT2);
    emitGetFromCallFrameHeaderPtr(JSStack::CallerFrame, callFrameRegister);

    restoreReturnAddressBeforeReturn(regT2);
    ret();
}

Beispiel #4

Datei: JITCall32_64.cpp Projekt: youtube/h5vcc_hh

void JIT::emit_op_ret(Instruction* currentInstruction)
{
    unsigned dst = currentInstruction[1].u.operand;

    // We could JIT generate the deref, only calling out to C when the refcount hits zero.
    if (m_codeBlock->needsFullScopeChain())
        JITStubCall(this, cti_op_ret_scopeChain).call();

    emitLoad(dst, regT1, regT0);
    emitGetFromCallFrameHeaderPtr(RegisterFile::ReturnPC, regT2);
    emitGetFromCallFrameHeaderPtr(RegisterFile::CallerFrame, callFrameRegister);

    restoreReturnAddressBeforeReturn(regT2);
    ret();
}

Beispiel #5

Datei: JITCall.cpp Projekt: fatman2021/webkitgtk

void JIT::compileCallEval()
{
    JITStubCall stubCall(this, cti_op_call_eval); // Initializes ScopeChain; ReturnPC; CodeBlock.
    stubCall.call();
    addSlowCase(branch64(Equal, regT0, TrustedImm64(JSValue::encode(JSValue()))));
    emitGetFromCallFrameHeaderPtr(JSStack::CallerFrame, callFrameRegister);

    sampleCodeBlock(m_codeBlock);
}

Beispiel #6

Datei: JITCall32_64.cpp Projekt: xiaolu31/webkit-node

void JIT::compileCallEval()
{
    JITStubCall stubCall(this, cti_op_call_eval); // Initializes ScopeChain; ReturnPC; CodeBlock.
    stubCall.call();
    addSlowCase(branch32(Equal, regT1, TrustedImm32(JSValue::EmptyValueTag)));
    emitGetFromCallFrameHeaderPtr(RegisterFile::CallerFrame, callFrameRegister);

    sampleCodeBlock(m_codeBlock);
}

Beispiel #7

void JIT::compileCallEvalSlowCase(Vector<SlowCaseEntry>::iterator& iter)
{
    linkSlowCase(iter);

    emitGetFromCallFrameHeaderPtr(RegisterFile::Callee, regT0);
    emitNakedCall(m_globalData->jitStubs->ctiVirtualCall());

    sampleCodeBlock(m_codeBlock);
}

Beispiel #8

void JIT::compileCallEval(Instruction* instruction)
{
    callOperationWithCallFrameRollbackOnException(operationCallEval);
    addSlowCase(branch32(Equal, regT1, TrustedImm32(JSValue::EmptyValueTag)));
    emitGetFromCallFrameHeaderPtr(JSStack::CallerFrame, callFrameRegister);

    sampleCodeBlock(m_codeBlock);
    
    emitPutCallResult(instruction);
}

Beispiel #9

Datei: JITCall32_64.cpp Projekt: pelegri/WebKit-PlayBook

void JIT::emit_op_ret(Instruction* currentInstruction)
{
    unsigned dst = currentInstruction[1].u.operand;

    // We could JIT generate the deref, only calling out to C when the refcount hits zero.
    if (m_codeBlock->needsFullScopeChain()) {
        Jump activationNotCreated = branch32(Equal, tagFor(m_codeBlock->activationRegister()), Imm32(JSValue::EmptyValueTag));
        JITStubCall(this, cti_op_ret_scopeChain).call();
        activationNotCreated.link(this);
    }
    emitLoad(dst, regT1, regT0);
#ifdef OPT_SCHED
    emitGetFromCallFrameHeaderPtr(RegisterFile::ReturnPC, regLink);
    emitGetFromCallFrameHeaderPtr(RegisterFile::CallerFrame, callFrameRegister);
#else
    emitGetFromCallFrameHeaderPtr(RegisterFile::ReturnPC, regT2);
    emitGetFromCallFrameHeaderPtr(RegisterFile::CallerFrame, callFrameRegister);

    restoreReturnAddressBeforeReturn(regT2);
#endif
    ret();
}