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using ARMeilleure.Memory;
using System;
namespace ARMeilleure.State
{
public class ExecutionContext
{
private const int MinCountForCheck = 4000;
private NativeContext _nativeContext;
internal IntPtr NativeContextPtr => _nativeContext.BasePtr;
private bool _interrupted;
private readonly ICounter _counter;
public ulong Pc => _nativeContext.GetPc();
public uint CtrEl0 => 0x8444c004;
public uint DczidEl0 => 0x00000004;
public ulong CntfrqEl0 => _counter.Frequency;
public ulong CntpctEl0 => _counter.Counter;
// CNTVCT_EL0 = CNTPCT_EL0 - CNTVOFF_EL2
// Since EL2 isn't implemented, CNTVOFF_EL2 = 0
public ulong CntvctEl0 => CntpctEl0;
public long TpidrEl0 { get; set; }
public long TpidrroEl0 { get; set; }
public uint Pstate
{
get => _nativeContext.GetPstate();
set => _nativeContext.SetPstate(value);
}
public FPSR Fpsr
{
get => (FPSR)_nativeContext.GetFPState((uint)FPSR.Mask);
set => _nativeContext.SetFPState((uint)value, (uint)FPSR.Mask);
}
public FPCR Fpcr
{
get => (FPCR)_nativeContext.GetFPState((uint)FPCR.Mask);
set => _nativeContext.SetFPState((uint)value, (uint)FPCR.Mask);
}
public FPCR StandardFpcrValue => (Fpcr & (FPCR.Ahp)) | FPCR.Dn | FPCR.Fz;
public FPSCR Fpscr
{
get => (FPSCR)_nativeContext.GetFPState((uint)FPSCR.Mask);
set => _nativeContext.SetFPState((uint)value, (uint)FPSCR.Mask);
}
public bool IsAarch32 { get; set; }
internal ExecutionMode ExecutionMode
{
get
{
if (IsAarch32)
{
return GetPstateFlag(PState.TFlag)
? ExecutionMode.Aarch32Thumb
: ExecutionMode.Aarch32Arm;
}
else
{
return ExecutionMode.Aarch64;
}
}
}
public bool Running
{
get => _nativeContext.GetRunning();
private set => _nativeContext.SetRunning(value);
}
private readonly ExceptionCallbackNoArgs _interruptCallback;
private readonly ExceptionCallback _breakCallback;
private readonly ExceptionCallback _supervisorCallback;
private readonly ExceptionCallback _undefinedCallback;
public ExecutionContext(
IJitMemoryAllocator allocator,
ICounter counter,
ExceptionCallbackNoArgs interruptCallback = null,
ExceptionCallback breakCallback = null,
ExceptionCallback supervisorCallback = null,
ExceptionCallback undefinedCallback = null)
{
_nativeContext = new NativeContext(allocator);
_counter = counter;
_interruptCallback = interruptCallback;
_breakCallback = breakCallback;
_supervisorCallback = supervisorCallback;
_undefinedCallback = undefinedCallback;
Running = true;
_nativeContext.SetCounter(MinCountForCheck);
}
public ulong GetX(int index) => _nativeContext.GetX(index);
public void SetX(int index, ulong value) => _nativeContext.SetX(index, value);
public V128 GetV(int index) => _nativeContext.GetV(index);
public void SetV(int index, V128 value) => _nativeContext.SetV(index, value);
public bool GetPstateFlag(PState flag) => _nativeContext.GetPstateFlag(flag);
public void SetPstateFlag(PState flag, bool value) => _nativeContext.SetPstateFlag(flag, value);
public bool GetFPstateFlag(FPState flag) => _nativeContext.GetFPStateFlag(flag);
public void SetFPstateFlag(FPState flag, bool value) => _nativeContext.SetFPStateFlag(flag, value);
internal void CheckInterrupt()
{
if (_interrupted)
{
_interrupted = false;
_interruptCallback?.Invoke(this);
}
_nativeContext.SetCounter(MinCountForCheck);
}
public void RequestInterrupt()
{
_interrupted = true;
}
internal void OnBreak(ulong address, int imm)
{
_breakCallback?.Invoke(this, address, imm);
}
internal void OnSupervisorCall(ulong address, int imm)
{
_supervisorCallback?.Invoke(this, address, imm);
}
internal void OnUndefined(ulong address, int opCode)
{
_undefinedCallback?.Invoke(this, address, opCode);
}
public void StopRunning()
{
Running = false;
_nativeContext.SetCounter(0);
}
public void Dispose()
{
_nativeContext.Dispose();
}
}
}
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