rjx-mirror/Ryujinx/Cpu/Instruction/AInstEmitMemoryHelper.cs
2018-02-04 20:08:20 -03:00

97 lines
No EOL
2.8 KiB
C#

using ChocolArm64.Memory;
using ChocolArm64.Translation;
using System;
using System.Reflection.Emit;
namespace ChocolArm64.Instruction
{
static class AInstEmitMemoryHelper
{
private enum Extension
{
Zx,
Sx32,
Sx64
}
public static void EmitReadZxCall(AILEmitterCtx Context, int Size)
{
EmitReadCall(Context, Extension.Zx, Size);
}
public static void EmitReadSx32Call(AILEmitterCtx Context, int Size)
{
EmitReadCall(Context, Extension.Sx32, Size);
}
public static void EmitReadSx64Call(AILEmitterCtx Context, int Size)
{
EmitReadCall(Context, Extension.Sx64, Size);
}
private static void EmitReadCall(AILEmitterCtx Context, Extension Ext, int Size)
{
if (Size < 0 || Size > 4)
{
throw new ArgumentOutOfRangeException(nameof(Size));
}
string Name = null;
switch (Size)
{
case 0: Name = nameof(AMemory.ReadByte); break;
case 1: Name = nameof(AMemory.ReadUInt16); break;
case 2: Name = nameof(AMemory.ReadUInt32); break;
case 3: Name = nameof(AMemory.ReadUInt64); break;
case 4: Name = nameof(AMemory.ReadVector128); break;
}
Context.EmitCall(typeof(AMemory), Name);
if (Ext == Extension.Sx32 ||
Ext == Extension.Sx64)
{
switch (Size)
{
case 0: Context.Emit(OpCodes.Conv_I1); break;
case 1: Context.Emit(OpCodes.Conv_I2); break;
case 2: Context.Emit(OpCodes.Conv_I4); break;
}
}
if (Size < 3)
{
Context.Emit(Ext == Extension.Sx64
? OpCodes.Conv_I8
: OpCodes.Conv_U8);
}
}
public static void EmitWriteCall(AILEmitterCtx Context, int Size)
{
if (Size < 0 || Size > 4)
{
throw new ArgumentOutOfRangeException(nameof(Size));
}
if (Size < 3)
{
Context.Emit(OpCodes.Conv_I4);
}
string Name = null;
switch (Size)
{
case 0: Name = nameof(AMemory.WriteByte); break;
case 1: Name = nameof(AMemory.WriteUInt16); break;
case 2: Name = nameof(AMemory.WriteUInt32); break;
case 3: Name = nameof(AMemory.WriteUInt64); break;
case 4: Name = nameof(AMemory.WriteVector128); break;
}
Context.EmitCall(typeof(AMemory), Name);
}
}
}