Exemplos de jumpToExceptionHandler em C++ (Cpp)

Exemplo n.º 1

Arquivo: DFGJITCompiler.cpp Projeto: ewmailing/webkit

void JITCompiler::compileExceptionHandlers()
{
    if (m_exceptionChecks.empty() && m_exceptionChecksWithCallFrameRollback.empty())
        return;

    Jump doLookup;

    if (!m_exceptionChecksWithCallFrameRollback.empty()) {
        m_exceptionChecksWithCallFrameRollback.link(this);
        emitGetCallerFrameFromCallFrameHeaderPtr(GPRInfo::argumentGPR0);
        doLookup = jump();
    }

    if (!m_exceptionChecks.empty())
        m_exceptionChecks.link(this);

    // lookupExceptionHandler is passed one argument, the exec (the CallFrame*).
    move(GPRInfo::callFrameRegister, GPRInfo::argumentGPR0);

    if (doLookup.isSet())
        doLookup.link(this);

#if CPU(X86)
    // FIXME: should use the call abstraction, but this is currently in the SpeculativeJIT layer!
    poke(GPRInfo::argumentGPR0);
#endif
    m_calls.append(CallLinkRecord(call(), lookupExceptionHandler));
    jumpToExceptionHandler();
}

Exemplo n.º 2

Arquivo: DFGJITCompiler.cpp Projeto: icepy/JavaScriptCore

void JITCompiler::compileExceptionHandlers()
{
    if (!m_exceptionChecksWithCallFrameRollback.empty()) {
        m_exceptionChecksWithCallFrameRollback.link(this);

        copyCalleeSavesToVMCalleeSavesBuffer();

        // lookupExceptionHandlerFromCallerFrame is passed two arguments, the VM and the exec (the CallFrame*).
        move(TrustedImmPtr(vm()), GPRInfo::argumentGPR0);
        move(GPRInfo::callFrameRegister, GPRInfo::argumentGPR1);
        addPtr(TrustedImm32(m_graph.stackPointerOffset() * sizeof(Register)), GPRInfo::callFrameRegister, stackPointerRegister);

#if CPU(X86)
        // FIXME: should use the call abstraction, but this is currently in the SpeculativeJIT layer!
        poke(GPRInfo::argumentGPR0);
        poke(GPRInfo::argumentGPR1, 1);
#endif
        m_calls.append(CallLinkRecord(call(), lookupExceptionHandlerFromCallerFrame));

        jumpToExceptionHandler();
    }

    if (!m_exceptionChecks.empty()) {
        m_exceptionChecks.link(this);

        copyCalleeSavesToVMCalleeSavesBuffer();

        // lookupExceptionHandler is passed two arguments, the VM and the exec (the CallFrame*).
        move(TrustedImmPtr(vm()), GPRInfo::argumentGPR0);
        move(GPRInfo::callFrameRegister, GPRInfo::argumentGPR1);

#if CPU(X86)
        // FIXME: should use the call abstraction, but this is currently in the SpeculativeJIT layer!
        poke(GPRInfo::argumentGPR0);
        poke(GPRInfo::argumentGPR1, 1);
#endif
        m_calls.append(CallLinkRecord(call(), lookupExceptionHandler));

        jumpToExceptionHandler();
    }
}