C++ (Cpp) callFrame Examples

Example #1

File: StackVisitor.cpp Project: houzhenggang/webkit

Arguments* StackVisitor::Frame::existingArguments()
{
    if (codeBlock()->codeType() != FunctionCode)
        return 0;
    if (!codeBlock()->usesArguments())
        return 0;
    
    VirtualRegister reg;
        
#if ENABLE(DFG_JIT)
    if (isInlinedFrame())
        reg = inlineCallFrame()->argumentsRegister;
    else
#endif // ENABLE(DFG_JIT)
        reg = codeBlock()->argumentsRegister();

    // Care should be taken here since exception fuzzing may raise exceptions in
    // places where they would be otherwise impossible. Therefore, callFrame may
    // lack activation even if the codeBlock signals need of activation. Also,
    // even if codeBlock signals the use of arguments, the
    // unmodifiedArgumentsRegister may not be initialized yet (neither locally
    // nor in lexicalEnvironment).
    JSValue result = jsUndefined();
    if (codeBlock()->needsActivation() && callFrame()->hasActivation())
        result = callFrame()->lexicalEnvironment()->registerAt(unmodifiedArgumentsRegister(reg).offset()).get();
    if (!result || !result.isCell()) // Try local unmodifiedArgumentsRegister if lexicalEnvironment is not present (generally possible) or has not set up registers yet (only possible if fuzzing exceptions).
        result = callFrame()->r(unmodifiedArgumentsRegister(reg).offset()).jsValue();
    if (!result || !result.isCell()) // Protect against the case when exception fuzzing throws when unmodifiedArgumentsRegister is not set up yet (e.g., in op_enter).
        return 0;
    return jsCast<Arguments*>(result);
}

Example #2

File: StackVisitor.cpp Project: wolfviking0/webcl-webkit

String StackVisitor::Frame::functionName() const
{
    String traceLine;

    switch (codeType()) {
    case CodeType::Wasm:
        traceLine = makeString(m_wasmFunctionIndexOrName);
        break;
    case CodeType::Eval:
        traceLine = "eval code"_s;
        break;
    case CodeType::Module:
        traceLine = "module code"_s;
        break;
    case CodeType::Native: {
        JSCell* callee = this->callee().asCell();
        if (callee)
            traceLine = getCalculatedDisplayName(callFrame()->vm(), jsCast<JSObject*>(callee)).impl();
        break;
    }
    case CodeType::Function: 
        traceLine = getCalculatedDisplayName(callFrame()->vm(), jsCast<JSObject*>(this->callee().asCell())).impl();
        break;
    case CodeType::Global:
        traceLine = "global code"_s;
        break;
    }
    return traceLine.isNull() ? emptyString() : traceLine;
}

Example #3

File: StackVisitor.cpp Project: EQ4/webkit-mips

String StackVisitor::Frame::functionName()
{
    String traceLine;
    JSObject* callee = this->callee();

    switch (codeType()) {
    case CodeType::Eval:
        traceLine = ASCIILiteral("eval code");
        break;
    case CodeType::Module:
        traceLine = ASCIILiteral("module code");
        break;
    case CodeType::Native:
        if (callee)
            traceLine = getCalculatedDisplayName(callFrame(), callee).impl();
        break;
    case CodeType::Function:
        traceLine = getCalculatedDisplayName(callFrame(), callee).impl();
        break;
    case CodeType::Global:
        traceLine = ASCIILiteral("global code");
        break;
    }
    return traceLine.isNull() ? emptyString() : traceLine;
}

Example #4

File: DebuggerCallFrame.cpp Project: Czerrr/ISeeBrowser

DebuggerCallFrame::Type DebuggerCallFrame::type() const
{
    if (callFrame()[RegisterFile::Callee].getJSValue())
        return FunctionType;

    return ProgramType;
}

Example #5

File: DebuggerCallFrame.cpp Project: Czerrr/ISeeBrowser

const UString* DebuggerCallFrame::functionName() const
{
    if (!m_codeBlock)
        return 0;

    JSFunction* function = static_cast<JSFunction*>(callFrame()[RegisterFile::Callee].getJSValue());
    if (!function)
        return 0;
    return &function->name(m_exec);
}

Example #6

File: StackVisitor.cpp Project: chenbk85/webkit2-wincairo

Arguments* StackVisitor::Frame::existingArguments()
{
    if (codeBlock()->codeType() != FunctionCode)
        return 0;
    if (!codeBlock()->usesArguments())
        return 0;
    
    VirtualRegister reg;
        
#if ENABLE(DFG_JIT)
    if (isInlinedFrame())
        reg = inlineCallFrame()->argumentsRegister;
    else
#endif // ENABLE(DFG_JIT)
        reg = codeBlock()->argumentsRegister();
    
    JSValue result = callFrame()->r(unmodifiedArgumentsRegister(reg).offset()).jsValue();
    if (!result || !result.isCell()) // Protect against Undefined in case we throw in op_enter.
        return 0;
    return jsCast<Arguments*>(result);
}