mirror of
https://github.com/danbulant/Cosmos
synced 2026-05-20 12:58:39 +00:00
51 lines
No EOL
1.8 KiB
C#
51 lines
No EOL
1.8 KiB
C#
using System;
|
|
using System.Linq;
|
|
using Indy.IL2CPU.Assembler;
|
|
using CPU = Indy.IL2CPU.Assembler;
|
|
using CPUx86 = Indy.IL2CPU.Assembler.X86;
|
|
|
|
namespace Indy.IL2CPU.IL.X86 {
|
|
[OpCode(OpCodeEnum.Box, false)]
|
|
public class Box: Op {
|
|
private int mTheSize;
|
|
private int mTypeId;
|
|
|
|
public Box(ILReader aReader, MethodInformation aMethodInfo)
|
|
: base(aReader, aMethodInfo) {
|
|
Type xTypeRef = aReader.OperandValueType as Type;
|
|
if (xTypeRef == null) {
|
|
throw new Exception("Couldn't determine Type!");
|
|
}
|
|
//if (xTypeRef is GenericParameter) {
|
|
// // todo: implement support for generics
|
|
// mTheSize = 4;
|
|
//} else {
|
|
mTheSize = Engine.GetFieldStorageSize(xTypeRef);
|
|
//}
|
|
//if (((mTheSize / 4) * 4) != mTheSize) {
|
|
// throw new Exception("Incorrect Datasize. ( ((mTheSize / 4) * 4) === mTheSize should evaluate to true!");
|
|
//}
|
|
//if (!(xTypeRef is GenericParameter)) {
|
|
mTypeId = Engine.RegisterType(xTypeRef);
|
|
//}
|
|
}
|
|
|
|
public override void DoAssemble() {
|
|
int xSize = mTheSize;
|
|
if (mTheSize % 4 != 0) {
|
|
xSize += 4 - (mTheSize % 4);
|
|
}
|
|
new CPUx86.Pushd("0x" + (ObjectImpl.FieldDataOffset + xSize).ToString("X").ToUpper());
|
|
new CPUx86.Call(CPU.Label.GenerateLabelName(RuntimeEngineRefs.Heap_AllocNewObjectRef));
|
|
new CPUx86.Move("dword", CPUx86.Registers.AtEAX, "0x" + mTypeId.ToString("X"));
|
|
new CPUx86.Move("dword", "[eax + 4]", "0x" + InstanceTypeEnum.BoxedValueType.ToString("X"));
|
|
for (int i = 0; i < (xSize / 4); i++) {
|
|
new CPUx86.Pop(CPUx86.Registers.EDX);
|
|
new CPUx86.Move("dword", "[eax + 0x" + (ObjectImpl.FieldDataOffset + (i * 4)).ToString("X") + "]", "edx");
|
|
}
|
|
Assembler.StackContents.Pop();
|
|
new CPUx86.Pushd(CPUx86.Registers.EAX);
|
|
Assembler.StackContents.Push(new StackContent(4, false, false, false));
|
|
}
|
|
}
|
|
} |