mirror of
https://github.com/danbulant/Cosmos
synced 2026-05-27 22:12:25 +00:00
65 lines
No EOL
2.4 KiB
C#
65 lines
No EOL
2.4 KiB
C#
using System;
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using System.IO;
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using Mono.Cecil;
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using Mono.Cecil.Cil;
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using CPU = Indy.IL2CPU.Assembler.X86;
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namespace Indy.IL2CPU.IL.X86 {
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[OpCode(Code.Newarr, false)]
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public class Newarr: Op {
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private int mElementSize;
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private string mCtorName;
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private bool mIsReference;
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private string mBaseLabelName;
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public Newarr(TypeReference aTypeRef, string aBaseLabelName)
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: base(null, null) {
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Initialize(aTypeRef, aBaseLabelName);
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}
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public Newarr(Mono.Cecil.Cil.Instruction aInstruction, MethodInformation aMethodInfo)
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: base(aInstruction, aMethodInfo) {
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TypeReference xTypeRef = aInstruction.Operand as TypeReference;
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if (xTypeRef == null) {
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throw new Exception("No TypeRef found!");
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}
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Initialize(xTypeRef, GetInstructionLabel(aInstruction));
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}
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private void Initialize(TypeReference aTypeRef, string aBaseLabelName) {
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mBaseLabelName = aBaseLabelName;
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TypeDefinition xTypeDef = Engine.GetDefinitionFromTypeReference(aTypeRef);
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mElementSize = Engine.GetFieldStorageSize(aTypeRef);
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TypeDefinition xArrayType = Engine.GetTypeDefinition("mscorlib", "System.Array");
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MethodDefinition xCtor = xArrayType.Constructors[0];
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mCtorName = new Assembler.Label(xCtor).Name;
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mIsReference = xTypeDef.IsClass;
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Engine.QueueMethod(xCtor);
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DoQueueMethod(RuntimeEngineRefs.Heap_AllocNewObjectRef);
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}
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public override void DoAssemble() {
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Literal("; Element Size = " + mElementSize);
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// element count is on the stack
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int xElementCountSize = Assembler.StackSizes.Peek();
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Pop("edi");
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Pushd(xElementCountSize, "edi");
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Pushd(4, "0" + mElementSize.ToString("X") + "h");
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Multiply();
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// the total items size is now on the stack
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Pushd(4, "0" + (ObjectImpl.FieldDataOffset + 4).ToString("X") + "h");
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Add();
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// the total array size is now on the stack.
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Call(new Assembler.Label(RuntimeEngineRefs.Heap_AllocNewObjectRef).Name);
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Assembler.StackSizes.Pop();
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Pushd(4, "eax");
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Pushd(4, "eax");
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Move(Assembler, "dword [eax]", "0" + Engine.RegisterType(Engine.GetTypeDefinition("mscorlib", "System.Array")).ToString("X") + "h");
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Assembler.Add(new CPU.Add("eax", "4"));
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Move(Assembler, "dword [eax]", "0" + InstanceTypeEnum.Array.ToString("X") + "h");
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Assembler.Add(new CPU.Add("eax", "4"));
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Move(Assembler, "dword [eax]", "edi");
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Call(mCtorName);
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}
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}
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} |