u16 DSPLLE::DSP_WriteControlRegister(u16 _uFlag)
{
UDSPControl Temp(_uFlag);
if (!m_InitMixer)
{
if (!Temp.DSPHalt)
{
InitMixer();
}
}
DSPInterpreter::WriteCR(_uFlag);
// Check if the CPU has set an external interrupt (CR_EXTERNAL_INT)
// and immediately process it, if it has.
if (_uFlag & 2)
{
if (!m_bDSPThread)
{
DSPCore_CheckExternalInterrupt();
DSPCore_CheckExceptions();
}
else
{
DSPCore_SetExternalInterrupt(true);
}
}
return DSPInterpreter::ReadCR();
}
void Step()
{
DSPCore_CheckExceptions();
g_dsp.step_counter++;
#if PROFILE
g_dsp.err_pc = g_dsp.pc;
ProfilerAddDelta(g_dsp.err_pc, 1);
if (g_dsp.step_counter == 1)
{
ProfilerInit();
}
if ((g_dsp.step_counter & 0xFFFFF) == 0)
{
ProfilerDump(g_dsp.step_counter);
}
#endif
u16 opc = dsp_fetch_code();
ExecuteInstruction(UDSPInstruction(opc));
if (DSPAnalyzer::code_flags[g_dsp.pc - 1] & DSPAnalyzer::CODE_LOOP_END)
HandleLoop();
}
// Delegate to JIT or interpreter as appropriate.
// Handle state changes and stepping.
int DSPCore_RunCycles(int cycles)
{
if (dspjit)
{
if (g_dsp.external_interrupt_waiting)
{
DSPCore_CheckExternalInterrupt();
DSPCore_CheckExceptions();
DSPCore_SetExternalInterrupt(false);
}
cyclesLeft = cycles;
DSPCompiledCode pExecAddr = (DSPCompiledCode)dspjit->enterDispatcher;
pExecAddr();
if (g_dsp.reset_dspjit_codespace)
dspjit->ClearIRAMandDSPJITCodespaceReset();
return cyclesLeft;
}
while (cycles > 0)
{
switch (core_state)
{
case DSPCORE_RUNNING:
// Seems to slow things down
#if defined(_DEBUG) || defined(DEBUGFAST)
cycles = DSPInterpreter::RunCyclesDebug(cycles);
#else
cycles = DSPInterpreter::RunCycles(cycles);
#endif
break;
case DSPCORE_STEPPING:
step_event.Wait();
if (core_state != DSPCORE_STEPPING)
continue;
DSPInterpreter::Step();
cycles--;
DSPHost::UpdateDebugger();
break;
case DSPCORE_STOP:
break;
}
}
return cycles;
}
u16 DSPLLE::DSP_WriteControlRegister(u16 _uFlag)
{
DSPInterpreter::WriteCR(_uFlag);
if (_uFlag & 2)
{
if (!m_bDSPThread)
{
DSPCore_CheckExternalInterrupt();
DSPCore_CheckExceptions();
}
else
{
// External interrupt pending: this is the zelda ucode.
// Disable the DSP thread because there is no performance gain.
requestDisableThread = true;
DSPCore_SetExternalInterrupt(true);
}
}
return DSPInterpreter::ReadCR();
}