mirror of
https://github.com/danbulant/Cosmos
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32 lines
No EOL
899 B
C#
32 lines
No EOL
899 B
C#
using System;
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using System.IO;
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using CPUx86 = Indy.IL2CPU.Assembler.X86;
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namespace Indy.IL2CPU.IL.X86 {
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[OpCode(OpCodeEnum.Brfalse)]
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public class Brfalse: Op {
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public readonly string TargetLabel;
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public Brfalse(ILReader aReader, MethodInformation aMethodInfo)
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: base(aReader, aMethodInfo) {
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TargetLabel = GetInstructionLabel(aReader.OperandValueBranchPosition);
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}
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public override void DoAssemble() {
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new CPUx86.Popd(CPUx86.Registers.EAX);
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var xStackContent = Assembler.StackContents.Pop();
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if (xStackContent.IsFloat) {
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throw new Exception("Floats not yet supported!");
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}
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if (xStackContent.Size > 8) {
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throw new Exception("StackSize>8 not supported");
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}
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if (xStackContent.Size > 4) {
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new CPUx86.Add("esp", "4");
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}
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new CPUx86.Compare(CPUx86.Registers.EAX, "0");
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new CPUx86.JumpIfEquals(TargetLabel);
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}
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}
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} |