mirror of
https://github.com/danbulant/Cosmos
synced 2026-05-30 21:00:30 +00:00
51e893eb74
implement neg CIL (needed for Abs()) fix floor and ceiling in range of int add sign extension to LdArg and LdLoc remove unneeded math functions, like min,max,abs
53 lines
No EOL
1.7 KiB
C#
53 lines
No EOL
1.7 KiB
C#
using System;
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using Cosmos.IL2CPU.ILOpCodes;
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using CPUx86 = Cosmos.Compiler.Assembler.X86;
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using Cosmos.Compiler.Assembler;
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namespace Cosmos.IL2CPU.X86.IL
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{
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[Cosmos.IL2CPU.OpCode(ILOpCode.Code.Ldloc)]
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public class Ldloc : ILOp
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{
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public Ldloc(Cosmos.Compiler.Assembler.Assembler aAsmblr)
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: base(aAsmblr)
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{
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}
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public override void Execute(MethodInfo aMethod, ILOpCode aOpCode)
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{
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var xOpVar = (OpVar)aOpCode;
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var xVar = aMethod.MethodBase.GetMethodBody().LocalVariables[xOpVar.Value];
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var xStackCount = GetStackCountForLocal(aMethod, xVar);
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var xEBPOffset = ((int)GetEBPOffsetForLocal(aMethod, xOpVar.Value));
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var xSize = SizeOfType(xVar.LocalType);
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new Comment("EBPOffset = " + xEBPOffset);
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if (xStackCount > 1)
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{
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for (int i = 0; i < xStackCount; i++)
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{
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new CPUx86.Move { DestinationReg = CPUx86.Registers.EAX, SourceReg = CPUx86.Registers.EBP, SourceIsIndirect = true, SourceDisplacement = (int)(0 - (xEBPOffset + (i * 4))) };
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new CPUx86.Push { DestinationReg = CPUx86.Registers.EAX };
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}
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}
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else
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{
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switch (xSize)
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{
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case 1:
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case 2:
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{
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new CPUx86.MoveSignExtend { DestinationReg = CPUx86.Registers.EAX, Size = (byte)(xSize * 8), SourceReg = CPUx86.Registers.EBP, SourceIsIndirect = true, SourceDisplacement = 0 - xEBPOffset };
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new CPUx86.Push { DestinationReg = CPUx86.Registers.EAX };
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break;
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}
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case 4:
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{
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new CPUx86.Push { DestinationReg = CPUx86.Registers.EBP, DestinationIsIndirect = true, DestinationDisplacement = 0 - xEBPOffset };
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break;
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}
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}
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}
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Assembler.Stack.Push(ILOp.Align(xSize, 4), xVar.LocalType);
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}
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}
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} |