diff options
Diffstat (limited to 'ChocolArm64/Instructions/InstEmitMemoryHelper.cs')
| -rw-r--r-- | ChocolArm64/Instructions/InstEmitMemoryHelper.cs | 138 |
1 files changed, 138 insertions, 0 deletions
diff --git a/ChocolArm64/Instructions/InstEmitMemoryHelper.cs b/ChocolArm64/Instructions/InstEmitMemoryHelper.cs new file mode 100644 index 00000000..f953564c --- /dev/null +++ b/ChocolArm64/Instructions/InstEmitMemoryHelper.cs @@ -0,0 +1,138 @@ +using ChocolArm64.Decoders; +using ChocolArm64.Memory; +using ChocolArm64.Translation; +using System; +using System.Reflection.Emit; + +namespace ChocolArm64.Instructions +{ + static class InstEmitMemoryHelper + { + private enum Extension + { + Zx, + Sx32, + Sx64 + } + + public static void EmitReadZxCall(ILEmitterCtx context, int size) + { + EmitReadCall(context, Extension.Zx, size); + } + + public static void EmitReadSx32Call(ILEmitterCtx context, int size) + { + EmitReadCall(context, Extension.Sx32, size); + } + + public static void EmitReadSx64Call(ILEmitterCtx context, int size) + { + EmitReadCall(context, Extension.Sx64, size); + } + + private static void EmitReadCall(ILEmitterCtx 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 = nameof(MemoryManager.ReadVector8); break; + case 1: name = nameof(MemoryManager.ReadVector16); break; + case 2: name = nameof(MemoryManager.ReadVector32); break; + case 3: name = nameof(MemoryManager.ReadVector64); break; + case 4: name = nameof(MemoryManager.ReadVector128); break; + } + } + else + { + switch (size) + { + case 0: name = nameof(MemoryManager.ReadByte); break; + case 1: name = nameof(MemoryManager.ReadUInt16); break; + case 2: name = nameof(MemoryManager.ReadUInt32); break; + case 3: name = nameof(MemoryManager.ReadUInt64); break; + } + } + + context.EmitCall(typeof(MemoryManager), 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(ILEmitterCtx 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 = nameof(MemoryManager.WriteVector8); break; + case 1: name = nameof(MemoryManager.WriteVector16); break; + case 2: name = nameof(MemoryManager.WriteVector32); break; + case 3: name = nameof(MemoryManager.WriteVector64); break; + case 4: name = nameof(MemoryManager.WriteVector128); break; + } + } + else + { + switch (size) + { + case 0: name = nameof(MemoryManager.WriteByte); break; + case 1: name = nameof(MemoryManager.WriteUInt16); break; + case 2: name = nameof(MemoryManager.WriteUInt32); break; + case 3: name = nameof(MemoryManager.WriteUInt64); break; + } + } + + context.EmitCall(typeof(MemoryManager), name); + } + + private static bool GetIsSimd(ILEmitterCtx context) + { + return context.CurrOp is IOpCodeSimd64 && + !(context.CurrOp is OpCodeSimdMemMs64 || + context.CurrOp is OpCodeSimdMemSs64); + } + } +}
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