Cosmos/source2/IL2PCU/Cosmos.IL2CPU.X86/IL/Shl.cs
2009-07-29 05:48:10 +00:00

26 lines
1 KiB
C#

using System;
using CPUx86 = Indy.IL2CPU.Assembler.X86;
namespace Cosmos.IL2CPU.X86.IL
{
[Cosmos.IL2CPU.OpCode(ILOpCode.Code.Shl)]
public class Shl: ILOp
{
public Shl(Cosmos.IL2CPU.Assembler aAsmblr):base(aAsmblr)
{
}
public override void Execute(MethodInfo aMethod, ILOpCode aOpCode) {
new CPUx86.Pop { DestinationReg = CPUx86.Registers.EAX }; // shift amount
var xStackItem_ShiftAmount = OldAsmblr.StackContents.Pop();
new CPUx86.Pop { DestinationReg = CPUx86.Registers.EDX }; // value
var xStackItem_Value = OldAsmblr.StackContents.Pop();
new CPUx86.Move { DestinationReg = CPUx86.Registers.EBX, SourceValue = 0 };
new CPUx86.Move { DestinationReg = CPUx86.Registers.CL, SourceReg = CPUx86.Registers.AL };
new CPUx86.ShiftLeft { DestinationReg = CPUx86.Registers.EDX, SourceReg = CPUx86.Registers.CL };
new CPUx86.Push { DestinationReg = CPUx86.Registers.EDX };
OldAsmblr.StackContents.Push(xStackItem_Value);
}
}
}