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using ChocolArm64.Decoder;
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)
{
bool IsSimd = GetIsSimd(Context);
string Name = null;
if (Size < 0 || Size > (IsSimd ? 4 : 3))
{
throw new ArgumentOutOfRangeException(nameof(Size));
}
if (IsSimd)
{
switch (Size)
{
case 0: Name = AOptimizations.DisableMemoryChecks
? nameof(AMemory.ReadVector8Unchecked)
: nameof(AMemory.ReadVector8); break;
case 1: Name = AOptimizations.DisableMemoryChecks
? nameof(AMemory.ReadVector16Unchecked)
: nameof(AMemory.ReadVector16); break;
case 2: Name = AOptimizations.DisableMemoryChecks
? nameof(AMemory.ReadVector32Unchecked)
: nameof(AMemory.ReadVector32); break;
case 3: Name = AOptimizations.DisableMemoryChecks
? nameof(AMemory.ReadVector64Unchecked)
: nameof(AMemory.ReadVector64); break;
case 4: Name = AOptimizations.DisableMemoryChecks
? nameof(AMemory.ReadVector128Unchecked)
: nameof(AMemory.ReadVector128); break;
}
}
else
{
switch (Size)
{
case 0: Name = AOptimizations.DisableMemoryChecks
? nameof(AMemory.ReadByteUnchecked)
: nameof(AMemory.ReadByte); break;
case 1: Name = AOptimizations.DisableMemoryChecks
? nameof(AMemory.ReadUInt16Unchecked)
: nameof(AMemory.ReadUInt16); break;
case 2: Name = AOptimizations.DisableMemoryChecks
? nameof(AMemory.ReadUInt32Unchecked)
: nameof(AMemory.ReadUInt32); break;
case 3: Name = AOptimizations.DisableMemoryChecks
? nameof(AMemory.ReadUInt64Unchecked)
: nameof(AMemory.ReadUInt64); break;
}
}
Context.EmitCall(typeof(AMemory), Name);
if (!IsSimd)
{
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)
{
bool IsSimd = GetIsSimd(Context);
string Name = null;
if (Size < 0 || Size > (IsSimd ? 4 : 3))
{
throw new ArgumentOutOfRangeException(nameof(Size));
}
if (Size < 3 && !IsSimd)
{
Context.Emit(OpCodes.Conv_I4);
}
if (IsSimd)
{
switch (Size)
{
case 0: Name = AOptimizations.DisableMemoryChecks
? nameof(AMemory.WriteVector8Unchecked)
: nameof(AMemory.WriteVector8); break;
case 1: Name = AOptimizations.DisableMemoryChecks
? nameof(AMemory.WriteVector16Unchecked)
: nameof(AMemory.WriteVector16); break;
case 2: Name = AOptimizations.DisableMemoryChecks
? nameof(AMemory.WriteVector32Unchecked)
: nameof(AMemory.WriteVector32); break;
case 3: Name = AOptimizations.DisableMemoryChecks
? nameof(AMemory.WriteVector64Unchecked)
: nameof(AMemory.WriteVector64); break;
case 4: Name = AOptimizations.DisableMemoryChecks
? nameof(AMemory.WriteVector128Unchecked)
: nameof(AMemory.WriteVector128); break;
}
}
else
{
switch (Size)
{
case 0: Name = AOptimizations.DisableMemoryChecks
? nameof(AMemory.WriteByteUnchecked)
: nameof(AMemory.WriteByte); break;
case 1: Name = AOptimizations.DisableMemoryChecks
? nameof(AMemory.WriteUInt16Unchecked)
: nameof(AMemory.WriteUInt16); break;
case 2: Name = AOptimizations.DisableMemoryChecks
? nameof(AMemory.WriteUInt32Unchecked)
: nameof(AMemory.WriteUInt32); break;
case 3: Name = AOptimizations.DisableMemoryChecks
? nameof(AMemory.WriteUInt64Unchecked)
: nameof(AMemory.WriteUInt64); break;
}
}
Context.EmitCall(typeof(AMemory), Name);
}
private static bool GetIsSimd(AILEmitterCtx Context)
{
return Context.CurrOp is IAOpCodeSimd &&
!(Context.CurrOp is AOpCodeSimdMemMs ||
Context.CurrOp is AOpCodeSimdMemSs);
}
}
}
|
