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ryujinx-final/ChocolArm64/Memory/AMemory.cs

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using ChocolArm64.Exceptions;
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using ChocolArm64.State;
using System;
using System.Collections.Generic;
using System.Runtime.CompilerServices;
using System.Runtime.InteropServices;
using System.Runtime.Intrinsics;
using System.Runtime.Intrinsics.X86;
using System.Threading;
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namespace ChocolArm64.Memory
{
public unsafe class AMemory : IAMemory, IDisposable
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{
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private const long ErgMask = (4 << AThreadState.ErgSizeLog2) - 1;
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public AMemoryMgr Manager { get; private set; }
private class ArmMonitor
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{
public long Position;
public bool ExState;
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public bool HasExclusiveAccess(long Position)
{
return this.Position == Position && ExState;
}
}
private Dictionary<int, ArmMonitor> Monitors;
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public IntPtr Ram { get; private set; }
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private byte* RamPtr;
private int HostPageSize;
public AMemory()
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{
Manager = new AMemoryMgr();
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Monitors = new Dictionary<int, ArmMonitor>();
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IntPtr Size = (IntPtr)AMemoryMgr.RamSize + AMemoryMgr.PageSize;
if (RuntimeInformation.IsOSPlatform(OSPlatform.Windows))
{
Ram = AMemoryWin32.Allocate(Size);
HostPageSize = AMemoryWin32.GetPageSize(Ram, Size);
}
else
{
Ram = Marshal.AllocHGlobal(Size);
}
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RamPtr = (byte*)Ram;
}
public void RemoveMonitor(AThreadState State)
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{
lock (Monitors)
{
ClearExclusive(State);
Monitors.Remove(State.ThreadId);
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}
}
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public void SetExclusive(AThreadState ThreadState, long Position)
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{
Position &= ~ErgMask;
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lock (Monitors)
{
foreach (ArmMonitor Mon in Monitors.Values)
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{
if (Mon.Position == Position && Mon.ExState)
{
Mon.ExState = false;
}
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}
if (!Monitors.TryGetValue(ThreadState.ThreadId, out ArmMonitor ThreadMon))
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{
ThreadMon = new ArmMonitor();
Monitors.Add(ThreadState.ThreadId, ThreadMon);
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}
ThreadMon.Position = Position;
ThreadMon.ExState = true;
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}
}
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public bool TestExclusive(AThreadState ThreadState, long Position)
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{
//Note: Any call to this method also should be followed by a
//call to ClearExclusiveForStore if this method returns true.
Position &= ~ErgMask;
Monitor.Enter(Monitors);
if (!Monitors.TryGetValue(ThreadState.ThreadId, out ArmMonitor ThreadMon))
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{
return false;
}
bool ExState = ThreadMon.HasExclusiveAccess(Position);
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if (!ExState)
{
Monitor.Exit(Monitors);
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}
return ExState;
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}
public void ClearExclusiveForStore(AThreadState ThreadState)
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{
if (Monitors.TryGetValue(ThreadState.ThreadId, out ArmMonitor ThreadMon))
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{
ThreadMon.ExState = false;
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}
Monitor.Exit(Monitors);
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}
public void ClearExclusive(AThreadState ThreadState)
{
lock (Monitors)
{
if (Monitors.TryGetValue(ThreadState.ThreadId, out ArmMonitor ThreadMon))
{
ThreadMon.ExState = false;
}
}
}
public void WriteInt32ToSharedAddr(long Position, int Value)
{
long MaskedPosition = Position & ~ErgMask;
lock (Monitors)
{
foreach (ArmMonitor Mon in Monitors.Values)
{
if (Mon.Position == MaskedPosition && Mon.ExState)
{
Mon.ExState = false;
}
}
WriteInt32(Position, Value);
}
}
public int GetHostPageSize()
{
return HostPageSize;
}
public (bool[], long) IsRegionModified(long Position, long Size)
{
if (!RuntimeInformation.IsOSPlatform(OSPlatform.Windows))
{
return (null, 0);
}
long EndPos = Position + Size;
if ((ulong)EndPos < (ulong)Position)
{
return (null, 0);
}
if ((ulong)EndPos > AMemoryMgr.RamSize)
{
return (null, 0);
}
IntPtr MemAddress = new IntPtr(RamPtr + Position);
IntPtr MemSize = new IntPtr(Size);
int HostPageMask = HostPageSize - 1;
Position &= ~HostPageMask;
Size = EndPos - Position;
IntPtr[] Addresses = new IntPtr[(Size + HostPageMask) / HostPageSize];
AMemoryWin32.IsRegionModified(MemAddress, MemSize, Addresses, out int Count);
bool[] Modified = new bool[Addresses.Length];
for (int Index = 0; Index < Count; Index++)
{
long VA = Addresses[Index].ToInt64() - Ram.ToInt64();
Modified[(VA - Position) / HostPageSize] = true;
}
return (Modified, Count);
}
public IntPtr GetHostAddress(long Position, long Size)
{
EnsureRangeIsValid(Position, Size, AMemoryPerm.Read);
return (IntPtr)(RamPtr + (ulong)Position);
}
public sbyte ReadSByte(long Position)
{
return (sbyte)ReadByte(Position);
}
public short ReadInt16(long Position)
{
return (short)ReadUInt16(Position);
}
public int ReadInt32(long Position)
{
return (int)ReadUInt32(Position);
}
public long ReadInt64(long Position)
{
return (long)ReadUInt64(Position);
}
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public byte ReadByte(long Position)
{
EnsureAccessIsValid(Position, AMemoryPerm.Read);
return ReadByteUnchecked(Position);
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}
public ushort ReadUInt16(long Position)
{
EnsureAccessIsValid(Position + 0, AMemoryPerm.Read);
EnsureAccessIsValid(Position + 1, AMemoryPerm.Read);
return ReadUInt16Unchecked(Position);
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}
public uint ReadUInt32(long Position)
{
EnsureAccessIsValid(Position + 0, AMemoryPerm.Read);
EnsureAccessIsValid(Position + 3, AMemoryPerm.Read);
return ReadUInt32Unchecked(Position);
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}
public ulong ReadUInt64(long Position)
{
EnsureAccessIsValid(Position + 0, AMemoryPerm.Read);
EnsureAccessIsValid(Position + 7, AMemoryPerm.Read);
return ReadUInt64Unchecked(Position);
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}
public Vector128<float> ReadVector8(long Position)
{
if (Sse2.IsSupported)
{
return Sse.StaticCast<byte, float>(Sse2.SetVector128(0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, ReadByte(Position)));
}
else
{
throw new PlatformNotSupportedException();
}
}
public Vector128<float> ReadVector16(long Position)
{
if (Sse2.IsSupported)
{
return Sse.StaticCast<ushort, float>(Sse2.Insert(Sse2.SetZeroVector128<ushort>(), ReadUInt16(Position), 0));
}
else
{
throw new PlatformNotSupportedException();
}
}
public Vector128<float> ReadVector32(long Position)
{
EnsureAccessIsValid(Position + 0, AMemoryPerm.Read);
EnsureAccessIsValid(Position + 3, AMemoryPerm.Read);
if (Sse.IsSupported)
{
return Sse.LoadScalarVector128((float*)(RamPtr + (uint)Position));
}
else
{
throw new PlatformNotSupportedException();
}
}
public Vector128<float> ReadVector64(long Position)
{
EnsureAccessIsValid(Position + 0, AMemoryPerm.Read);
EnsureAccessIsValid(Position + 7, AMemoryPerm.Read);
if (Sse2.IsSupported)
{
return Sse.StaticCast<double, float>(Sse2.LoadScalarVector128((double*)(RamPtr + (uint)Position)));
}
else
{
throw new PlatformNotSupportedException();
}
}
public Vector128<float> ReadVector128(long Position)
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{
EnsureAccessIsValid(Position + 0, AMemoryPerm.Read);
EnsureAccessIsValid(Position + 15, AMemoryPerm.Read);
if (Sse.IsSupported)
{
return Sse.LoadVector128((float*)(RamPtr + (uint)Position));
}
else
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{
throw new PlatformNotSupportedException();
}
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}
public sbyte ReadSByteUnchecked(long Position)
{
return (sbyte)ReadByteUnchecked(Position);
}
public short ReadInt16Unchecked(long Position)
{
return (short)ReadUInt16Unchecked(Position);
}
public int ReadInt32Unchecked(long Position)
{
return (int)ReadUInt32Unchecked(Position);
}
public long ReadInt64Unchecked(long Position)
{
return (long)ReadUInt64Unchecked(Position);
}
public byte ReadByteUnchecked(long Position)
{
return *((byte*)(RamPtr + (uint)Position));
}
public ushort ReadUInt16Unchecked(long Position)
{
return *((ushort*)(RamPtr + (uint)Position));
}
public uint ReadUInt32Unchecked(long Position)
{
return *((uint*)(RamPtr + (uint)Position));
}
public ulong ReadUInt64Unchecked(long Position)
{
return *((ulong*)(RamPtr + (uint)Position));
}
public Vector128<float> ReadVector8Unchecked(long Position)
{
if (Sse2.IsSupported)
{
return Sse.StaticCast<byte, float>(Sse2.SetVector128(0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, ReadByte(Position)));
}
else
{
throw new PlatformNotSupportedException();
}
}
[MethodImpl(MethodImplOptions.AggressiveInlining)]
public Vector128<float> ReadVector16Unchecked(long Position)
{
if (Sse2.IsSupported)
{
return Sse.StaticCast<ushort, float>(Sse2.Insert(Sse2.SetZeroVector128<ushort>(), ReadUInt16Unchecked(Position), 0));
}
else
{
throw new PlatformNotSupportedException();
}
}
[MethodImpl(MethodImplOptions.NoInlining)]
public Vector128<float> ReadVector32Unchecked(long Position)
{
if (Sse.IsSupported)
{
return Sse.LoadScalarVector128((float*)(RamPtr + (uint)Position));
}
else
{
throw new PlatformNotSupportedException();
}
}
[MethodImpl(MethodImplOptions.NoInlining)]
public Vector128<float> ReadVector64Unchecked(long Position)
{
if (Sse2.IsSupported)
{
return Sse.StaticCast<double, float>(Sse2.LoadScalarVector128((double*)(RamPtr + (uint)Position)));
}
else
{
throw new PlatformNotSupportedException();
}
}
[MethodImpl(MethodImplOptions.AggressiveInlining)]
public Vector128<float> ReadVector128Unchecked(long Position)
{
if (Sse.IsSupported)
{
return Sse.LoadVector128((float*)(RamPtr + (uint)Position));
}
else
{
throw new PlatformNotSupportedException();
}
}
public byte[] ReadBytes(long Position, long Size)
{
if ((uint)Size > int.MaxValue)
{
throw new ArgumentOutOfRangeException(nameof(Size));
}
EnsureRangeIsValid(Position, Size, AMemoryPerm.Read);
byte[] Data = new byte[Size];
Marshal.Copy((IntPtr)(RamPtr + (uint)Position), Data, 0, (int)Size);
return Data;
}
public void WriteSByte(long Position, sbyte Value)
{
WriteByte(Position, (byte)Value);
}
public void WriteInt16(long Position, short Value)
{
WriteUInt16(Position, (ushort)Value);
}
public void WriteInt32(long Position, int Value)
{
WriteUInt32(Position, (uint)Value);
}
public void WriteInt64(long Position, long Value)
{
WriteUInt64(Position, (ulong)Value);
}
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public void WriteByte(long Position, byte Value)
{
EnsureAccessIsValid(Position, AMemoryPerm.Write);
WriteByteUnchecked(Position, Value);
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}
public void WriteUInt16(long Position, ushort Value)
{
EnsureAccessIsValid(Position + 0, AMemoryPerm.Write);
EnsureAccessIsValid(Position + 1, AMemoryPerm.Write);
WriteUInt16Unchecked(Position, Value);
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}
public void WriteUInt32(long Position, uint Value)
{
EnsureAccessIsValid(Position + 0, AMemoryPerm.Write);
EnsureAccessIsValid(Position + 3, AMemoryPerm.Write);
WriteUInt32Unchecked(Position, Value);
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}
public void WriteUInt64(long Position, ulong Value)
{
EnsureAccessIsValid(Position + 0, AMemoryPerm.Write);
EnsureAccessIsValid(Position + 7, AMemoryPerm.Write);
WriteUInt64Unchecked(Position, Value);
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}
public void WriteVector8(long Position, Vector128<float> Value)
{
if (Sse41.IsSupported)
{
WriteByte(Position, Sse41.Extract(Sse.StaticCast<float, byte>(Value), 0));
}
else if (Sse2.IsSupported)
{
WriteByte(Position, (byte)Sse2.Extract(Sse.StaticCast<float, ushort>(Value), 0));
}
else
{
throw new PlatformNotSupportedException();
}
}
public void WriteVector16(long Position, Vector128<float> Value)
{
if (Sse2.IsSupported)
{
WriteUInt16(Position, Sse2.Extract(Sse.StaticCast<float, ushort>(Value), 0));
}
else
{
throw new PlatformNotSupportedException();
}
}
public void WriteVector32(long Position, Vector128<float> Value)
{
EnsureAccessIsValid(Position + 0, AMemoryPerm.Write);
EnsureAccessIsValid(Position + 3, AMemoryPerm.Write);
if (Sse.IsSupported)
{
Sse.StoreScalar((float*)(RamPtr + (uint)Position), Value);
}
else
{
throw new PlatformNotSupportedException();
}
}
public void WriteVector64(long Position, Vector128<float> Value)
{
EnsureAccessIsValid(Position + 0, AMemoryPerm.Write);
EnsureAccessIsValid(Position + 7, AMemoryPerm.Write);
if (Sse2.IsSupported)
{
Sse2.StoreScalar((double*)(RamPtr + (uint)Position), Sse.StaticCast<float, double>(Value));
}
else
{
throw new PlatformNotSupportedException();
}
}
public void WriteVector128(long Position, Vector128<float> Value)
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{
EnsureAccessIsValid(Position + 0, AMemoryPerm.Write);
EnsureAccessIsValid(Position + 15, AMemoryPerm.Write);
if (Sse.IsSupported)
{
Sse.Store((float*)(RamPtr + (uint)Position), Value);
}
else
{
throw new PlatformNotSupportedException();
}
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}
public void WriteSByteUnchecked(long Position, sbyte Value)
{
WriteByteUnchecked(Position, (byte)Value);
}
public void WriteInt16Unchecked(long Position, short Value)
{
WriteUInt16Unchecked(Position, (ushort)Value);
}
public void WriteInt32Unchecked(long Position, int Value)
{
WriteUInt32Unchecked(Position, (uint)Value);
}
public void WriteInt64Unchecked(long Position, long Value)
{
WriteUInt64Unchecked(Position, (ulong)Value);
}
public void WriteByteUnchecked(long Position, byte Value)
{
*((byte*)(RamPtr + (uint)Position)) = Value;
}
public void WriteUInt16Unchecked(long Position, ushort Value)
{
*((ushort*)(RamPtr + (uint)Position)) = Value;
}
public void WriteUInt32Unchecked(long Position, uint Value)
{
*((uint*)(RamPtr + (uint)Position)) = Value;
}
public void WriteUInt64Unchecked(long Position, ulong Value)
{
*((ulong*)(RamPtr + (uint)Position)) = Value;
}
[MethodImpl(MethodImplOptions.AggressiveInlining)]
public void WriteVector8Unchecked(long Position, Vector128<float> Value)
{
if (Sse41.IsSupported)
{
WriteByteUnchecked(Position, Sse41.Extract(Sse.StaticCast<float, byte>(Value), 0));
}
else if (Sse2.IsSupported)
{
WriteByteUnchecked(Position, (byte)Sse2.Extract(Sse.StaticCast<float, ushort>(Value), 0));
}
else
{
throw new PlatformNotSupportedException();
}
}
[MethodImpl(MethodImplOptions.AggressiveInlining)]
public void WriteVector16Unchecked(long Position, Vector128<float> Value)
{
if (Sse2.IsSupported)
{
WriteUInt16Unchecked(Position, Sse2.Extract(Sse.StaticCast<float, ushort>(Value), 0));
}
else
{
throw new PlatformNotSupportedException();
}
}
[MethodImpl(MethodImplOptions.NoInlining)]
public void WriteVector32Unchecked(long Position, Vector128<float> Value)
{
if (Sse.IsSupported)
{
Sse.StoreScalar((float*)(RamPtr + (uint)Position), Value);
}
else
{
throw new PlatformNotSupportedException();
}
}
[MethodImpl(MethodImplOptions.NoInlining)]
public void WriteVector64Unchecked(long Position, Vector128<float> Value)
{
if (Sse2.IsSupported)
{
Sse2.StoreScalar((double*)(RamPtr + (uint)Position), Sse.StaticCast<float, double>(Value));
}
else
{
throw new PlatformNotSupportedException();
}
}
[MethodImpl(MethodImplOptions.AggressiveInlining)]
public void WriteVector128Unchecked(long Position, Vector128<float> Value)
{
if (Sse.IsSupported)
{
Sse.Store((float*)(RamPtr + (uint)Position), Value);
}
else
{
throw new PlatformNotSupportedException();
}
}
public void WriteBytes(long Position, byte[] Data)
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{
EnsureRangeIsValid(Position, (uint)Data.Length, AMemoryPerm.Write);
Marshal.Copy(Data, 0, (IntPtr)(RamPtr + (uint)Position), Data.Length);
}
private void EnsureRangeIsValid(long Position, long Size, AMemoryPerm Perm)
{
long EndPos = Position + Size;
Position &= ~AMemoryMgr.PageMask;
while ((ulong)Position < (ulong)EndPos)
{
EnsureAccessIsValid(Position, Perm);
Position += AMemoryMgr.PageSize;
}
}
private void EnsureAccessIsValid(long Position, AMemoryPerm Perm)
{
if (!Manager.IsMapped(Position))
{
throw new VmmPageFaultException(Position);
}
if (!Manager.HasPermission(Position, Perm))
{
throw new VmmAccessViolationException(Position, Perm);
}
}
public void Dispose()
{
Dispose(true);
}
protected virtual void Dispose(bool disposing)
{
if (Ram != IntPtr.Zero)
{
if (RuntimeInformation.IsOSPlatform(OSPlatform.Windows))
{
AMemoryWin32.Free(Ram);
}
else
{
Marshal.FreeHGlobal(Ram);
}
Ram = IntPtr.Zero;
}
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}
}
}