mirror of
https://github.com/Ryujinx/Ryujinx.git
synced 2024-09-11 10:18:52 +02:00
* Implement faster address translation and write tracking on the MMU * Rename MemoryAlloc to MemoryManagement, and other nits * Support multi-level page tables * Fix typo * Reword comment a bit * Support scalar vector loads/stores on the memory fast path, and minor fixes * Add missing cast * Alignment * Fix VirtualFree function signature * Change MemoryProtection enum to uint aswell for consistency
183 lines
No EOL
4.6 KiB
C#
183 lines
No EOL
4.6 KiB
C#
using ChocolArm64.Memory;
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using System;
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namespace Ryujinx.HLE
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{
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class DeviceMemory : IDisposable
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{
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public const long RamSize = 4L * 1024 * 1024 * 1024;
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public IntPtr RamPointer { get; }
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private unsafe byte* _ramPtr;
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public unsafe DeviceMemory()
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{
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RamPointer = MemoryManagement.AllocateWriteTracked(RamSize);
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_ramPtr = (byte*)RamPointer;
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}
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public sbyte ReadSByte(long position)
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{
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return (sbyte)ReadByte(position);
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}
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public short ReadInt16(long position)
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{
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return (short)ReadUInt16(position);
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}
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public int ReadInt32(long position)
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{
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return (int)ReadUInt32(position);
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}
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public long ReadInt64(long position)
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{
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return (long)ReadUInt64(position);
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}
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public unsafe byte ReadByte(long position)
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{
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return *(_ramPtr + position);
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}
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public unsafe ushort ReadUInt16(long position)
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{
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return *((ushort*)(_ramPtr + position));
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}
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public unsafe uint ReadUInt32(long position)
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{
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return *((uint*)(_ramPtr + position));
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}
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public unsafe ulong ReadUInt64(long position)
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{
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return *((ulong*)(_ramPtr + position));
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}
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public void WriteSByte(long position, sbyte value)
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{
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WriteByte(position, (byte)value);
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}
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public void WriteInt16(long position, short value)
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{
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WriteUInt16(position, (ushort)value);
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}
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public void WriteInt32(long position, int value)
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{
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WriteUInt32(position, (uint)value);
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}
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public void WriteInt64(long position, long value)
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{
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WriteUInt64(position, (ulong)value);
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}
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public unsafe void WriteByte(long position, byte value)
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{
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*(_ramPtr + position) = value;
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}
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public unsafe void WriteUInt16(long position, ushort value)
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{
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*((ushort*)(_ramPtr + position)) = value;
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}
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public unsafe void WriteUInt32(long position, uint value)
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{
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*((uint*)(_ramPtr + position)) = value;
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}
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public unsafe void WriteUInt64(long position, ulong value)
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{
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*((ulong*)(_ramPtr + position)) = value;
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}
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public void FillWithZeros(long position, int size)
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{
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int size8 = size & ~(8 - 1);
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for (int offs = 0; offs < size8; offs += 8)
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{
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WriteInt64(position + offs, 0);
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}
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for (int offs = size8; offs < (size - size8); offs++)
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{
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WriteByte(position + offs, 0);
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}
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}
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public void Set(ulong address, byte value, ulong size)
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{
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if (address + size < address)
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{
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throw new ArgumentOutOfRangeException(nameof(size));
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}
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if (address + size > RamSize)
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{
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throw new ArgumentOutOfRangeException(nameof(address));
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}
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ulong size8 = size & ~7UL;
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ulong valueRep = (ulong)value * 0x0101010101010101;
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for (ulong offs = 0; offs < size8; offs += 8)
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{
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WriteUInt64((long)(address + offs), valueRep);
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}
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for (ulong offs = size8; offs < (size - size8); offs++)
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{
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WriteByte((long)(address + offs), value);
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}
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}
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public void Copy(ulong dst, ulong src, ulong size)
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{
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if (dst + size < dst || src + size < src)
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{
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throw new ArgumentOutOfRangeException(nameof(size));
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}
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if (dst + size > RamSize)
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{
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throw new ArgumentOutOfRangeException(nameof(dst));
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}
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if (src + size > RamSize)
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{
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throw new ArgumentOutOfRangeException(nameof(src));
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}
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ulong size8 = size & ~7UL;
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for (ulong offs = 0; offs < size8; offs += 8)
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{
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WriteUInt64((long)(dst + offs), ReadUInt64((long)(src + offs)));
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}
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for (ulong offs = size8; offs < (size - size8); offs++)
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{
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WriteByte((long)(dst + offs), ReadByte((long)(src + offs)));
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}
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}
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public void Dispose()
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{
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Dispose(true);
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}
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protected virtual void Dispose(bool disposing)
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{
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MemoryManagement.Free(RamPointer);
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}
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}
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} |