mirror of
https://github.com/danbulant/Cosmos
synced 2026-05-30 04:40:14 +00:00
88 lines
No EOL
3.4 KiB
C#
88 lines
No EOL
3.4 KiB
C#
using System;
|
|
using Indy.IL2CPU.Assembler;
|
|
using Mono.Cecil;
|
|
using Mono.Cecil.Cil;
|
|
using CPUx86 = Indy.IL2CPU.Assembler.X86;
|
|
|
|
namespace Indy.IL2CPU.IL.X86 {
|
|
[OpCode(Code.Stsfld)]
|
|
public class Stsfld: Op {
|
|
private string mDataName;
|
|
private int mSize;
|
|
private TypeReference mDataType;
|
|
private bool mNeedsGC;
|
|
private string mBaseLabel;
|
|
|
|
|
|
public Stsfld(Mono.Cecil.Cil.Instruction aInstruction, MethodInformation aMethodInfo)
|
|
: base(aInstruction, aMethodInfo) {
|
|
FieldReference xField = (FieldReference)aInstruction.Operand;
|
|
mSize = Engine.GetFieldStorageSize(xField.FieldType);
|
|
Engine.QueueStaticField(xField, out mDataName);
|
|
mNeedsGC = !xField.FieldType.IsValueType && xField.FieldType.FullName != "System.String";
|
|
mDataType = xField.FieldType;
|
|
mBaseLabel = GetInstructionLabel(aInstruction);
|
|
}
|
|
|
|
public override void DoAssemble() {
|
|
if (mNeedsGC) {
|
|
new CPUx86.Pushd("[" + mDataName + "]");
|
|
TypeSpecification xTypeSpec = mDataType as TypeSpecification;
|
|
if (xTypeSpec != null) {
|
|
TypeDefinition xElementDef = Engine.GetDefinitionFromTypeReference(xTypeSpec.ElementType);
|
|
if ((!xElementDef.IsValueType) && xElementDef.FullName != "System.String") {
|
|
new CPUx86.Compare("dword " + CPUx86.Registers.AtESP, "0");
|
|
new CPUx86.JumpIfEquals(mBaseLabel + "_GC_LOCAL_CLEANUP_ENTRY_VAR_END");
|
|
new CPUx86.Pushd("[" + mDataName + "]");
|
|
new CPUx86.Push("8");
|
|
Op.Add(Assembler);
|
|
new CPUx86.Pop(CPUx86.Registers.EDX); // total item count address
|
|
new CPUx86.Move(CPUx86.Registers.EBX, CPUx86.Registers.AtEDX);
|
|
new CPUx86.Add(CPUx86.Registers.EDX, "4");
|
|
new CPUx86.Move(CPUx86.Registers.ECX, "0"); // counter
|
|
new Label(mBaseLabel + "_GC_LOCAL_CLEANUP_ENTRY_VAR");
|
|
new CPUx86.Compare(CPUx86.Registers.EBX, CPUx86.Registers.ECX);
|
|
new CPUx86.JumpIfEquals(mBaseLabel + "_GC_LOCAL_CLEANUP_ENTRY_VAR_END");
|
|
new CPUx86.Push(CPUx86.Registers.EDX);
|
|
new CPUx86.Push(CPUx86.Registers.ECX);
|
|
new CPUx86.Push(CPUx86.Registers.EBX);
|
|
new CPUx86.Push("dword", CPUx86.Registers.AtEDX);
|
|
new CPUx86.Call(Label.GenerateLabelName(GCImplementationRefs.DecRefCountRef));
|
|
new CPUx86.Pop(CPUx86.Registers.EBX);
|
|
new CPUx86.Pop(CPUx86.Registers.ECX);
|
|
new CPUx86.Pop(CPUx86.Registers.EDX);
|
|
new CPUx86.Add(CPUx86.Registers.EDX, "4");
|
|
new CPUx86.Add(CPUx86.Registers.ECX, "1");
|
|
new CPUx86.JumpAlways(mBaseLabel + "_GC_LOCAL_CLEANUP_ENTRY_VAR");
|
|
new Label(mBaseLabel + "_GC_LOCAL_CLEANUP_ENTRY_VAR_END");
|
|
}
|
|
}
|
|
Engine.QueueMethodRef(GCImplementationRefs.DecRefCountRef);
|
|
new CPUx86.Call(Label.GenerateLabelName(GCImplementationRefs.DecRefCountRef));
|
|
}
|
|
for (int i = 1; i <= (mSize / 4); i++) {
|
|
new CPUx86.Pop(CPUx86.Registers.EAX);
|
|
new CPUx86.Move("dword [" + mDataName + " + 0x" + (mSize - (i * 4)).ToString("X") + "]", "eax");
|
|
}
|
|
switch (mSize % 4) {
|
|
case 1: {
|
|
new CPUx86.Pop(CPUx86.Registers.EAX);
|
|
new CPUx86.Move("byte [" + mDataName + "]", "al");
|
|
break;
|
|
}
|
|
case 2: {
|
|
new CPUx86.Pop(CPUx86.Registers.EAX);
|
|
new CPUx86.Move("word [" + mDataName + "]", "ax");
|
|
break;
|
|
}
|
|
case 0: {
|
|
break;
|
|
}
|
|
default:
|
|
throw new Exception("Remainder size " + (mSize % 4) + " not supported!");
|
|
|
|
}
|
|
Assembler.StackSizes.Pop();
|
|
}
|
|
}
|
|
} |