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* Improve V128 * Use LayoutKind.Sequential instead * Add As<T>, Get<T> & Set<T> * Fix CpuTest * Rename Get<T> & Set<T> to Extract<T> & Insert<T> * Add XML documentation * Nit
199 lines
6.1 KiB
C#
199 lines
6.1 KiB
C#
using ARMeilleure.IntermediateRepresentation;
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using ARMeilleure.Memory;
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using System;
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using System.Runtime.InteropServices;
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namespace ARMeilleure.State
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{
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class NativeContext : IDisposable
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{
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private const int IntSize = 8;
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private const int VecSize = 16;
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private const int FlagSize = 4;
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private const int ExtraSize = 8;
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private const int TotalSize = RegisterConsts.IntRegsCount * IntSize +
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RegisterConsts.VecRegsCount * VecSize +
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RegisterConsts.FlagsCount * FlagSize +
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RegisterConsts.FpFlagsCount * FlagSize + ExtraSize;
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public IntPtr BasePtr { get; }
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public NativeContext()
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{
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BasePtr = MemoryManagement.Allocate(TotalSize);
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}
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public ulong GetX(int index)
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{
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if ((uint)index >= RegisterConsts.IntRegsCount)
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{
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throw new ArgumentOutOfRangeException(nameof(index));
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}
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return (ulong)Marshal.ReadInt64(BasePtr, index * IntSize);
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}
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public void SetX(int index, ulong value)
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{
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if ((uint)index >= RegisterConsts.IntRegsCount)
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{
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throw new ArgumentOutOfRangeException(nameof(index));
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}
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Marshal.WriteInt64(BasePtr, index * IntSize, (long)value);
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}
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public V128 GetV(int index)
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{
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if ((uint)index >= RegisterConsts.IntRegsCount)
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{
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throw new ArgumentOutOfRangeException(nameof(index));
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}
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int offset = RegisterConsts.IntRegsCount * IntSize + index * VecSize;
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return new V128(
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Marshal.ReadInt64(BasePtr, offset + 0),
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Marshal.ReadInt64(BasePtr, offset + 8));
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}
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public void SetV(int index, V128 value)
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{
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if ((uint)index >= RegisterConsts.IntRegsCount)
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{
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throw new ArgumentOutOfRangeException(nameof(index));
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}
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int offset = RegisterConsts.IntRegsCount * IntSize + index * VecSize;
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Marshal.WriteInt64(BasePtr, offset + 0, value.Extract<long>(0));
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Marshal.WriteInt64(BasePtr, offset + 8, value.Extract<long>(1));
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}
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public bool GetPstateFlag(PState flag)
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{
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if ((uint)flag >= RegisterConsts.FlagsCount)
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{
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throw new ArgumentException($"Invalid flag \"{flag}\" specified.");
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}
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int offset =
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RegisterConsts.IntRegsCount * IntSize +
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RegisterConsts.VecRegsCount * VecSize + (int)flag * FlagSize;
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int value = Marshal.ReadInt32(BasePtr, offset);
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return value != 0;
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}
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public void SetPstateFlag(PState flag, bool value)
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{
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if ((uint)flag >= RegisterConsts.FlagsCount)
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{
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throw new ArgumentException($"Invalid flag \"{flag}\" specified.");
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}
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int offset =
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RegisterConsts.IntRegsCount * IntSize +
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RegisterConsts.VecRegsCount * VecSize + (int)flag * FlagSize;
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Marshal.WriteInt32(BasePtr, offset, value ? 1 : 0);
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}
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public bool GetFPStateFlag(FPState flag)
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{
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if ((uint)flag >= RegisterConsts.FlagsCount)
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{
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throw new ArgumentException($"Invalid flag \"{flag}\" specified.");
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}
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int offset =
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RegisterConsts.IntRegsCount * IntSize +
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RegisterConsts.VecRegsCount * VecSize +
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RegisterConsts.FlagsCount * FlagSize + (int)flag * FlagSize;
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int value = Marshal.ReadInt32(BasePtr, offset);
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return value != 0;
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}
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public void SetFPStateFlag(FPState flag, bool value)
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{
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if ((uint)flag >= RegisterConsts.FlagsCount)
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{
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throw new ArgumentException($"Invalid flag \"{flag}\" specified.");
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}
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int offset =
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RegisterConsts.IntRegsCount * IntSize +
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RegisterConsts.VecRegsCount * VecSize +
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RegisterConsts.FlagsCount * FlagSize + (int)flag * FlagSize;
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Marshal.WriteInt32(BasePtr, offset, value ? 1 : 0);
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}
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public int GetCounter()
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{
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return Marshal.ReadInt32(BasePtr, GetCounterOffset());
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}
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public void SetCounter(int value)
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{
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Marshal.WriteInt32(BasePtr, GetCounterOffset(), value);
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}
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public static int GetRegisterOffset(Register reg)
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{
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int offset, size;
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if (reg.Type == RegisterType.Integer)
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{
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offset = reg.Index * IntSize;
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size = IntSize;
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}
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else if (reg.Type == RegisterType.Vector)
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{
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offset = RegisterConsts.IntRegsCount * IntSize + reg.Index * VecSize;
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size = VecSize;
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}
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else /* if (reg.Type == RegisterType.Flag) */
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{
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offset = RegisterConsts.IntRegsCount * IntSize +
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RegisterConsts.VecRegsCount * VecSize + reg.Index * FlagSize;
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size = FlagSize;
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}
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if ((uint)(offset + size) > (uint)TotalSize)
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{
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throw new ArgumentException("Invalid register.");
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}
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return offset;
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}
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public static int GetCounterOffset()
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{
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return RegisterConsts.IntRegsCount * IntSize +
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RegisterConsts.VecRegsCount * VecSize +
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RegisterConsts.FlagsCount * FlagSize +
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RegisterConsts.FpFlagsCount * FlagSize;
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}
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public static int GetCallAddressOffset()
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{
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return RegisterConsts.IntRegsCount * IntSize +
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RegisterConsts.VecRegsCount * VecSize +
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RegisterConsts.FlagsCount * FlagSize +
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RegisterConsts.FpFlagsCount * FlagSize + 4;
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}
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public void Dispose()
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{
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MemoryManagement.Free(BasePtr);
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}
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}
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} |