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using System;
using System.Runtime.InteropServices;
namespace Ryujinx.HLE
{
class DeviceMemory : IDisposable
{
public const long RamSize = 4L * 1024 * 1024 * 1024;
public IntPtr RamPointer { get; private set; }
private unsafe byte* RamPtr;
public unsafe DeviceMemory()
{
RamPointer = Marshal.AllocHGlobal(new IntPtr(RamSize));
RamPtr = (byte*)RamPointer;
}
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);
}
public unsafe byte ReadByte(long Position)
{
return *((byte*)(RamPtr + Position));
}
public unsafe ushort ReadUInt16(long Position)
{
return *((ushort*)(RamPtr + Position));
}
public unsafe uint ReadUInt32(long Position)
{
return *((uint*)(RamPtr + Position));
}
public unsafe ulong ReadUInt64(long Position)
{
return *((ulong*)(RamPtr + Position));
}
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);
}
public unsafe void WriteByte(long Position, byte Value)
{
*((byte*)(RamPtr + Position)) = Value;
}
public unsafe void WriteUInt16(long Position, ushort Value)
{
*((ushort*)(RamPtr + Position)) = Value;
}
public unsafe void WriteUInt32(long Position, uint Value)
{
*((uint*)(RamPtr + Position)) = Value;
}
public unsafe void WriteUInt64(long Position, ulong Value)
{
*((ulong*)(RamPtr + Position)) = Value;
}
public void FillWithZeros(long Position, int Size)
{
int Size8 = Size & ~(8 - 1);
for (int Offs = 0; Offs < Size8; Offs += 8)
{
WriteInt64(Position + Offs, 0);
}
for (int Offs = Size8; Offs < (Size - Size8); Offs++)
{
WriteByte(Position + Offs, 0);
}
}
public void Dispose()
{
Dispose(true);
}
protected virtual void Dispose(bool Disposing)
{
Marshal.FreeHGlobal(RamPointer);
}
}
}
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