Well lets say we have this c# code:
public override void Write(XDRDestination destination)
{
destination.WriteInt(intValue);
destination.WriteBool(boolValue);
destination.WriteFixedString(str1, 100);
destination.WriteVariableString(str2, 100);
}
IL:
.method public hidebysig virtual instance void
Write(class [XDRFramework]XDRFramework.XDRDestination destination) cil managed
{
// Code size 53 (0x35)
.maxstack 8
IL_0000: ldarg.1
IL_0001: ldarg.0
IL_0002: call instance int32 LearnIL.Test1::get_intValue()
IL_0007: callvirt instance void [XDRFramework]XDRFramework.XDRDestination::WriteInt(int32)
IL_000c: ldarg.1
IL_000d: ldarg.0
IL_000e: call instance bool LearnIL.Test1::get_boolValue()
IL_0013: callvirt instance void [XDRFramework]XDRFramework.XDRDestination::WriteBool(bool)
IL_0018: ldarg.1
IL_0019: ldarg.0
IL_001a: call instance string LearnIL.Test1::get_str1()
IL_001f: ldc.i4.s 100
IL_0021: callvirt instance void [XDRFramework]XDRFramework.XDRDestination::WriteFixedString(string,
uint32)
IL_0026: ldarg.1
IL_0027: ldarg.0
IL_0028: call instance string LearnIL.Test1::get_str2()
IL_002d: ldc.i4.s 100
IL_002f: callvirt instance void [XDRFramework]XDRFramework.XDRDestination::WriteVariableString(string,
uint32)
IL_0034: ret
} // end of method Test1::Write
Now to the question my understanding is that ldarg.# puts the arguments supplied to the method on the stack so we can work with them? But why does it call ldarg.1 and ldarg.0 when the method only takes one argument?