147 lines
4.2 KiB
C#
147 lines
4.2 KiB
C#
using ARMeilleure.Memory;
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using System;
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using System.Diagnostics;
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namespace ARMeilleure.State
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{
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public class ExecutionContext
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{
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private const int MinCountForCheck = 4000;
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private NativeContext _nativeContext;
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internal IntPtr NativeContextPtr => _nativeContext.BasePtr;
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private bool _interrupted;
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private static Stopwatch _tickCounter;
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private static double _hostTickFreq;
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public uint CtrEl0 => 0x8444c004;
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public uint DczidEl0 => 0x00000004;
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public ulong CntfrqEl0 { get; set; }
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public ulong CntpctEl0
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{
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get
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{
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double ticks = _tickCounter.ElapsedTicks * _hostTickFreq;
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return (ulong)(ticks * CntfrqEl0);
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}
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}
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// CNTVCT_EL0 = CNTPCT_EL0 - CNTVOFF_EL2
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// Since EL2 isn't implemented, CNTVOFF_EL2 = 0
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public ulong CntvctEl0 => CntpctEl0;
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public static TimeSpan ElapsedTime => _tickCounter.Elapsed;
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public long TpidrEl0 { get; set; }
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public long Tpidr { get; set; }
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public FPCR Fpcr { get; set; }
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public FPSR Fpsr { get; set; }
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public FPCR StandardFpcrValue => (Fpcr & (FPCR.Ahp)) | FPCR.Dn | FPCR.Fz;
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public bool IsAarch32 { get; set; }
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internal ExecutionMode ExecutionMode
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{
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get
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{
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if (IsAarch32)
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{
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return GetPstateFlag(PState.TFlag)
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? ExecutionMode.Aarch32Thumb
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: ExecutionMode.Aarch32Arm;
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}
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else
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{
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return ExecutionMode.Aarch64;
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}
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}
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}
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internal bool Running { get; private set; }
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public event EventHandler<EventArgs> Interrupt;
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public event EventHandler<InstExceptionEventArgs> Break;
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public event EventHandler<InstExceptionEventArgs> SupervisorCall;
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public event EventHandler<InstUndefinedEventArgs> Undefined;
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static ExecutionContext()
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{
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_hostTickFreq = 1.0 / Stopwatch.Frequency;
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_tickCounter = new Stopwatch();
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_tickCounter.Start();
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}
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public ExecutionContext(IJitMemoryAllocator allocator)
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{
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_nativeContext = new NativeContext(allocator);
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Running = true;
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_nativeContext.SetCounter(MinCountForCheck);
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}
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public ulong GetX(int index) => _nativeContext.GetX(index);
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public void SetX(int index, ulong value) => _nativeContext.SetX(index, value);
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public V128 GetV(int index) => _nativeContext.GetV(index);
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public void SetV(int index, V128 value) => _nativeContext.SetV(index, value);
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public bool GetPstateFlag(PState flag) => _nativeContext.GetPstateFlag(flag);
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public void SetPstateFlag(PState flag, bool value) => _nativeContext.SetPstateFlag(flag, value);
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public bool GetFPstateFlag(FPState flag) => _nativeContext.GetFPStateFlag(flag);
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public void SetFPstateFlag(FPState flag, bool value) => _nativeContext.SetFPStateFlag(flag, value);
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internal void CheckInterrupt()
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{
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if (_interrupted)
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{
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_interrupted = false;
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Interrupt?.Invoke(this, EventArgs.Empty);
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}
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_nativeContext.SetCounter(MinCountForCheck);
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}
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public void RequestInterrupt()
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{
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_interrupted = true;
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}
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internal void OnBreak(ulong address, int imm)
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{
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Break?.Invoke(this, new InstExceptionEventArgs(address, imm));
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}
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internal void OnSupervisorCall(ulong address, int imm)
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{
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SupervisorCall?.Invoke(this, new InstExceptionEventArgs(address, imm));
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}
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internal void OnUndefined(ulong address, int opCode)
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{
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Undefined?.Invoke(this, new InstUndefinedEventArgs(address, opCode));
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}
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public void StopRunning()
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{
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Running = false;
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_nativeContext.SetCounter(0);
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}
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public void Dispose()
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{
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_nativeContext.Dispose();
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}
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}
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} |