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Add pl:u stub, use higher precision on CNTPCT_EL0 register tick count

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This commit is contained in:
gdkchan 2018-03-13 21:24:17 -03:00
parent 67bd1505df
commit 25d8e7e733
2 changed files with 24 additions and 3 deletions
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1
Instruction/AInstEmitSystem.cs
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@ -30,6 +30,7 @@ namespace ChocolArm64.Instruction
case 0b11_011_0100_0100_001: PropName = nameof(AThreadState.Fpsr); break;
case 0b11_011_1101_0000_010: PropName = nameof(AThreadState.TpidrEl0); break;
case 0b11_011_1101_0000_011: PropName = nameof(AThreadState.Tpidr); break;
case 0b11_011_1110_0000_000: PropName = nameof(AThreadState.CntfrqEl0); break;
case 0b11_011_1110_0000_001: PropName = nameof(AThreadState.CntpctEl0); break;
default: throw new NotImplementedException($"Unknown MRS at {Op.Position:x16}");

26
State/AThreadState.cs
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@ -1,5 +1,6 @@
using ChocolArm64.Events;
using System;
using System.Diagnostics;
namespace ChocolArm64.State
{
@ -40,15 +41,34 @@ namespace ChocolArm64.State
public uint CtrEl0 => 0x8444c004;
public uint DczidEl0 => 0x00000004;
private const ulong TicksPerS = 19_200_000;
private const ulong TicksPerMS = TicksPerS / 1_000;
public ulong CntfrqEl0 { get; set; }
public ulong CntpctEl0
{
get
{
double Ticks = TickCounter.ElapsedTicks * HostTickFreq;
public ulong CntpctEl0 => (ulong)Environment.TickCount * TicksPerMS;
return (ulong)(Ticks * CntfrqEl0);
}
}
public event EventHandler<AInstExceptionEventArgs> Break;
public event EventHandler<AInstExceptionEventArgs> SvcCall;
public event EventHandler<AInstUndefinedEventArgs> Undefined;
private static Stopwatch TickCounter;
private static double HostTickFreq;
static AThreadState()
{
HostTickFreq = 1.0 / Stopwatch.Frequency;
TickCounter = new Stopwatch();
TickCounter.Start();
}
internal void OnBreak(int Imm)
{
Break?.Invoke(this, new AInstExceptionEventArgs(Imm));