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Refactor NativeContext (#1410)
* Refactor NativeContext * Fix bugs * Use correct counts * Check index using register count constants
This commit is contained in:
gdkchan
GitHub
parent
41ac824273
commit
80d4199fb3
1 changed files with 67 additions and 94 deletions
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@ -1,21 +1,23 @@
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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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using System.Runtime.CompilerServices;
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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 unsafe struct NativeCtxStorage
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{
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public fixed ulong X[RegisterConsts.IntRegsCount];
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public fixed ulong V[RegisterConsts.VecRegsCount * 2];
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public fixed uint Flags[RegisterConsts.FlagsCount];
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public fixed uint FpFlags[RegisterConsts.FpFlagsCount];
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public int Counter;
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public ulong CallAddress;
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}
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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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private static NativeCtxStorage _dummyStorage = new NativeCtxStorage();
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private readonly IJitMemoryBlock _block;
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@ -23,179 +25,150 @@ namespace ARMeilleure.State
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public NativeContext(IJitMemoryAllocator allocator)
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{
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_block = allocator.Allocate(TotalSize);
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_block = allocator.Allocate((ulong)Unsafe.SizeOf<NativeCtxStorage>());
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}
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public ulong GetX(int index)
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public unsafe 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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return GetStorage().X[index];
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}
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public void SetX(int index, ulong value)
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public unsafe 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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GetStorage().X[index] = value;
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}
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public V128 GetV(int index)
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public unsafe V128 GetV(int index)
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{
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if ((uint)index >= RegisterConsts.IntRegsCount)
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if ((uint)index >= RegisterConsts.VecRegsCount)
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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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return new V128(GetStorage().V[index * 2 + 0], GetStorage().V[index * 2 + 1]);
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}
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public void SetV(int index, V128 value)
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public unsafe void SetV(int index, V128 value)
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{
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if ((uint)index >= RegisterConsts.IntRegsCount)
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if ((uint)index >= RegisterConsts.VecRegsCount)
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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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GetStorage().V[index * 2 + 0] = value.Extract<ulong>(0);
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GetStorage().V[index * 2 + 1] = value.Extract<ulong>(1);
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}
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public bool GetPstateFlag(PState flag)
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public unsafe 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($"Invalid flag \"{flag}\" specified.");
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}
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int offset =
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RegisterConsts.IntRegsCount * IntSize +
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RegisterConsts.VecRegsCount * VecSize + (int)flag * FlagSize;
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int value = Marshal.ReadInt32(BasePtr, offset);
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return value != 0;
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return GetStorage().Flags[(int)flag] != 0;
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}
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public void SetPstateFlag(PState flag, bool value)
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public unsafe void SetPstateFlag(PState flag, bool value)
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{
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if ((uint)flag >= RegisterConsts.FlagsCount)
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{
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throw new ArgumentException($"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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GetStorage().Flags[(int)flag] = value ? 1u : 0u;
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}
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public bool GetFPStateFlag(FPState flag)
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public unsafe bool GetFPStateFlag(FPState flag)
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{
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if ((uint)flag >= RegisterConsts.FlagsCount)
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if ((uint)flag >= RegisterConsts.FpFlagsCount)
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{
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throw new ArgumentException($"Invalid flag \"{flag}\" specified.");
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}
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int offset =
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RegisterConsts.IntRegsCount * IntSize +
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RegisterConsts.VecRegsCount * VecSize +
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RegisterConsts.FlagsCount * FlagSize + (int)flag * FlagSize;
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int value = Marshal.ReadInt32(BasePtr, offset);
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return value != 0;
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return GetStorage().FpFlags[(int)flag] != 0;
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}
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public void SetFPStateFlag(FPState flag, bool value)
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public unsafe void SetFPStateFlag(FPState flag, bool value)
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{
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if ((uint)flag >= RegisterConsts.FlagsCount)
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if ((uint)flag >= RegisterConsts.FpFlagsCount)
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{
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throw new ArgumentException($"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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GetStorage().FpFlags[(int)flag] = value ? 1u : 0u;
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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 int GetCounter() => GetStorage().Counter;
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public void SetCounter(int value) => GetStorage().Counter = value;
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public void SetCounter(int value)
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public unsafe static int GetRegisterOffset(Register reg)
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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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if ((uint)reg.Index >= RegisterConsts.IntRegsCount)
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{
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throw new ArgumentException("Invalid register.");
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}
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size = IntSize;
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return StorageOffset(ref _dummyStorage, ref _dummyStorage.X[reg.Index]);
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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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if ((uint)reg.Index >= RegisterConsts.VecRegsCount)
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{
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throw new ArgumentException("Invalid register.");
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}
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size = VecSize;
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return StorageOffset(ref _dummyStorage, ref _dummyStorage.V[reg.Index * 2]);
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}
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else /* if (reg.Type == RegisterType.Flag) */
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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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if ((uint)reg.Index >= RegisterConsts.FlagsCount)
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{
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throw new ArgumentException("Invalid register.");
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}
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size = FlagSize;
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return StorageOffset(ref _dummyStorage, ref _dummyStorage.Flags[reg.Index]);
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}
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if ((uint)(offset + size) > (uint)TotalSize)
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else /* if (reg.Type == RegisterType.FpFlag) */
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{
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throw new ArgumentException("Invalid register.");
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}
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if ((uint)reg.Index >= RegisterConsts.FpFlagsCount)
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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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return StorageOffset(ref _dummyStorage, ref _dummyStorage.FpFlags[reg.Index]);
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}
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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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return StorageOffset(ref _dummyStorage, ref _dummyStorage.Counter);
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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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return StorageOffset(ref _dummyStorage, ref _dummyStorage.CallAddress);
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}
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public void Dispose()
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private static int StorageOffset<T>(ref NativeCtxStorage storage, ref T target)
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{
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_block.Dispose();
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return (int)Unsafe.ByteOffset(ref Unsafe.As<NativeCtxStorage, T>(ref storage), ref target);
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}
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private unsafe ref NativeCtxStorage GetStorage() => ref Unsafe.AsRef<NativeCtxStorage>((void*)_block.Pointer);
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public void Dispose() => _block.Dispose();
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}
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}
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