/// <summary>
/// Tells the module to begin x86 execution at the specified Entry Point
/// </summary>
/// <param name="entryPoint">Entry Point where execution will begin</param>
/// <param name="channelNumber">Channel Number calling for execution</param>
/// <param name="simulateCallFar">Are we simulating a CALL FAR? This is usually when we're calling a local function pointer</param>
/// <param name="bypassSetState">Should we bypass setting a startup state? This is true for execution of things like Text Variable processing</param>
/// <param name="initialStackValues">Initial Stack Values to be pushed to the stack prior to executing (simulating parameters on a method call)</param>
/// <param name="initialStackPointer">
/// Initial Stack Pointer Value. Because EU's share the same memory space, including stack space, we need to sometimes need to manually decrement the
/// stack pointer enough to where the stack on the nested call won't overlap with the stack on the parent caller.
/// </param>
/// <returns></returns>
public CpuRegisters Execute(FarPtr entryPoint, ushort channelNumber, bool simulateCallFar = false, bool bypassSetState = false,
Queue <ushort> initialStackValues = null, ushort initialStackPointer = CpuCore.STACK_BASE)
{
//Set the proper DLL making the call based on the Segment
for (ushort i = 0; i < ModuleDlls.Count; i++)
{
var dll = ModuleDlls[i];
if (entryPoint.Segment >= dll.SegmentOffset &&
entryPoint.Segment <= (dll.SegmentOffset + dll.File.SegmentTable.Count))
{
foreach (var(_, value) in ExportedModuleDictionary)
{
((ExportedModuleBase)value).ModuleDll = i;
}
}
}
//Try to dequeue an execution unit, if one doesn't exist, create a new one
if (!ExecutionUnits.TryDequeue(out var executionUnit))
{
_logger.Debug($"({ModuleIdentifier}) Exhausted execution Units, creating additional");
executionUnit = new ExecutionUnit(Memory, _clock, ExportedModuleDictionary, _logger, ModulePath);
}
var resultRegisters = executionUnit.Execute(entryPoint, channelNumber, simulateCallFar, bypassSetState, initialStackValues, initialStackPointer);
ExecutionUnits.Enqueue(executionUnit);
return(resultRegisters);
}
/// <summary>
/// Tells the module to begin x86 execution at the specified Entry Point
/// </summary>
/// <param name="entryPoint">Entry Point where execution will begin</param>
/// <param name="channelNumber">Channel Number calling for execution</param>
/// <param name="simulateCallFar">Are we simulating a CALL FAR? This is usually when we're calling a local function pointer</param>
/// <param name="bypassSetState">Should we bypass setting a startup state? This is true for execution of things like Text Variable processing</param>
/// <param name="initialStackValues">Initial Stack Values to be pushed to the stack prior to executing (simulating parameters on a method call)</param>
/// <param name="initialStackPointer">
/// Initial Stack Pointer Value. Because EU's share the same memory space, including stack space, we need to sometimes need to manually decrement the
/// stack pointer enough to where the stack on the nested call won't overlap with the stack on the parent caller.
/// </param>
/// <returns></returns>
public CpuRegisters Execute(IntPtr16 entryPoint, ushort channelNumber, bool simulateCallFar = false, bool bypassSetState = false,
Queue <ushort> initialStackValues = null, ushort initialStackPointer = CpuCore.STACK_BASE)
{
//Try to dequeue an execution unit, if one doesn't exist, create a new one
if (!ExecutionUnits.TryDequeue(out var executionUnit))
{
_logger.Warn($"{ModuleIdentifier} exhausted execution Units, creating additional");
executionUnit = new ExecutionUnit(Memory, ExportedModuleDictionary);
}
var resultRegisters = executionUnit.Execute(entryPoint, channelNumber, simulateCallFar, bypassSetState, initialStackValues, initialStackPointer);
ExecutionUnits.Enqueue(executionUnit);
return(resultRegisters);
}
