mirror of
https://github.com/danbulant/Cosmos
synced 2026-05-29 20:30:44 +00:00
100 lines
No EOL
3.9 KiB
C#
100 lines
No EOL
3.9 KiB
C#
using System;
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using System.Collections.Generic;
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using System.Linq;
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using System.Text;
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using Indy.IL2CPU.Assembler;
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using Mono.Cecil;
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using CPU = Indy.IL2CPU.Assembler.X86;
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using Instruction = Mono.Cecil.Cil.Instruction;
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namespace Indy.IL2CPU.IL.X86 {
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public class X86MethodFooterOp: MethodFooterOp {
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public readonly int TotalArgsSize = 0;
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public readonly int ReturnSize = 0;
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public readonly MethodInformation.Variable[] Locals;
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public readonly MethodInformation.Argument[] Args;
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public X86MethodFooterOp(Instruction aInstruction, MethodInformation aMethodInfo)
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: base(aInstruction, aMethodInfo) {
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if (aMethodInfo != null) {
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// if (aMethodInfo.Locals.Length > 0) {
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// TotalLocalsSize += aMethodInfo.Locals[aMethodInfo.Locals.Length - 1].Offset + aMethodInfo.Locals[aMethodInfo.Locals.Length - 1].Size;
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// }
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Locals = aMethodInfo.Locals.ToArray();
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Args = aMethodInfo.Arguments.ToArray();
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ReturnSize = aMethodInfo.ReturnSize;
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}
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}
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public override void DoAssemble() {
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AssembleFooter(ReturnSize, Assembler, Locals, Args, (from item in Args
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select item.Size).Sum());
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}
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public static void AssembleFooter(int aReturnSize, Assembler.Assembler aAssembler, MethodInformation.Variable[] aLocals, MethodInformation.Argument[] aArgs, int aTotalArgsSize) {
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new Label(".END__OF__METHOD");
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if (!aAssembler.InMetalMode) {
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Engine.QueueMethodRef(GCImplementationRefs.DecRefCountRef);
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foreach (MethodInformation.Variable xLocal in aLocals) {
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if (xLocal.IsReferenceType && xLocal.VariableType.FullName != "System.String") {
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// System.Diagnostics.Debugger.Break();
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TypeSpecification xTypeSpec = xLocal.VariableType as TypeSpecification;
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if (xTypeSpec != null) {
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TypeDefinition xElementDef = Engine.GetDefinitionFromTypeReference(xTypeSpec.ElementType);
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if ((!xElementDef.IsValueType) && xElementDef.FullName != "System.String") {
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Op.Ldloc(aAssembler, xLocal, false);
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new CPU.Push("8");
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Op.Add(aAssembler);
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new CPU.Pop("edx"); // total item count address
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new CPU.Move("ebx", "[edx]");
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new CPU.Add("edx", "4");
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new CPU.Move("ecx", "0"); // counter
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new Label(".GC_LOCAL_CLEANUP_ENTRY_VAR_" + xLocal.Offset);
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new CPU.Compare("ebx", "ecx");
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new CPU.JumpIfEquals(".GC_LOCAL_CLEANUP_ENTRY_VAR_" + xLocal.Offset + "_END");
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new CPU.Push("edx");
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new CPU.Push("ecx");
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new CPU.Push("ebx");
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new CPU.Push("dword [edx]");
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new CPU.Call(Label.GenerateLabelName(GCImplementationRefs.DecRefCountRef));
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new CPU.Pop("ebx");
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new CPU.Pop("ecx");
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new CPU.Pop("edx");
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new CPU.Add("edx", "4");
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new CPU.Add("ecx", "1");
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new CPU.JumpAlways(".GC_LOCAL_CLEANUP_ENTRY_VAR_" + xLocal.Offset);
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new Label(".GC_LOCAL_CLEANUP_ENTRY_VAR_" + xLocal.Offset + "_END");
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// label
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// item pushen
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// ecx ophogen
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// ecx en eax vergelijken
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// als ecx kleiner is, naar label
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}
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}
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Op.Ldloc(aAssembler, xLocal, false);
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new CPU.Call(Label.GenerateLabelName(GCImplementationRefs.DecRefCountRef));
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}
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}
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foreach (MethodInformation.Argument xArg in aArgs) {
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if (xArg.IsReferenceType && xArg.ArgumentType.FullName != "System.String") {
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Op.Ldarg(aAssembler, xArg, false);
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new CPU.Call(Label.GenerateLabelName(GCImplementationRefs.DecRefCountRef));
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}
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}
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}
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if (aReturnSize > 0) {
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if (aReturnSize > 4) {
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throw new Exception("ReturnValue sizes larger than 4 not supported yet");
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} else {
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new Assembler.X86.Pop("eax");
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}
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}
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for (int j = aLocals.Length - 1; j >= 0; j--) {
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int xLocalSize = aLocals[j].Size;
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new CPU.Add("esp", "0x" + xLocalSize.ToString("X"));
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}
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new CPU.Popd("ebp");
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new CPU.Ret(aTotalArgsSize == 0 ? "" : aTotalArgsSize.ToString());
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}
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}
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} |