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Some more misc Msil stuff

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Westin Miller
2017-09-22 14:45:07 -07:00
parent 95b6c9dfe5
commit bb42dd026c
1 changed files with 68 additions and 0 deletions
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68
Torch/Managers/PatchManager/MSIL/MsilInstructionExtensions.cs
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@@ -198,5 +198,73 @@ namespace Torch.Managers.PatchManager.MSIL
return new MsilInstruction(argument.Position < 0xFF ? OpCodes.Ldarga_S : OpCodes.Ldarga).InlineValue(argument); return new MsilInstruction(argument.Position < 0xFF ? OpCodes.Ldarga_S : OpCodes.Ldarga).InlineValue(argument);
} }
#endregion #endregion
#region Constant Utils
/// <summary>
/// Determines if this instruction is a constant int load instruction.
/// </summary>
/// <param name="m">Instruction</param>
/// <returns>True if this instruction pushes a constant int onto the stack</returns>
public static bool IsConstIntLoad(this MsilInstruction m)
{
if (m.OpCode == OpCodes.Ldc_I4_0)
return true;
if (m.OpCode == OpCodes.Ldc_I4_1)
return true;
if (m.OpCode == OpCodes.Ldc_I4_2)
return true;
if (m.OpCode == OpCodes.Ldc_I4_3)
return true;
if (m.OpCode == OpCodes.Ldc_I4_4)
return true;
if (m.OpCode == OpCodes.Ldc_I4_5)
return true;
if (m.OpCode == OpCodes.Ldc_I4_6)
return true;
if (m.OpCode == OpCodes.Ldc_I4_7)
return true;
if (m.OpCode == OpCodes.Ldc_I4_8)
return true;
if (m.OpCode == OpCodes.Ldc_I4_M1)
return true;
if (m.OpCode == OpCodes.Ldc_I4)
return true;
return m.OpCode == OpCodes.Ldc_I4_S;
}
/// <summary>
/// Gets the constant int this instruction pushes onto the stack.
/// </summary>
/// <param name="m">Instruction</param>
/// <returns>The constant int</returns>
public static int GetConstInt(this MsilInstruction m)
{
if (m.OpCode == OpCodes.Ldc_I4_0)
return 0;
if (m.OpCode == OpCodes.Ldc_I4_1)
return 1;
if (m.OpCode == OpCodes.Ldc_I4_2)
return 2;
if (m.OpCode == OpCodes.Ldc_I4_3)
return 3;
if (m.OpCode == OpCodes.Ldc_I4_4)
return 4;
if (m.OpCode == OpCodes.Ldc_I4_5)
return 5;
if (m.OpCode == OpCodes.Ldc_I4_6)
return 6;
if (m.OpCode == OpCodes.Ldc_I4_7)
return 7;
if (m.OpCode == OpCodes.Ldc_I4_8)
return 8;
if (m.OpCode == OpCodes.Ldc_I4_M1)
return -1;
if (m.OpCode == OpCodes.Ldc_I4)
return ((MsilOperandInline<int>) m.Operand).Value;
if (m.OpCode == OpCodes.Ldc_I4_S)
return ((MsilOperandInline<byte>)m.Operand).Value;
throw new ArgumentException($"Can't get constant int from instruction {m}");
}
#endregion
} }
} }