public override void AssembleNew(Assembler aAssembler, object aMethodInfo)
{
var xAssembler = aAssembler;
var xMethodInfo = (_MethodInfo)aMethodInfo;
var xMethodBaseAsInfo = xMethodInfo.MethodBase as global::System.Reflection.MethodInfo;
if (xMethodBaseAsInfo.ReturnType != typeof(void))
{
throw new Exception("Events with return type not yet supported!");
}
/*
* EAX contains the GetInvocationList() array at the index at which it was last used
* EDX contains the index at which the EAX is
* EBX contains the number of items in the array
* ECX contains the argument size
*/
XS.ClearInterruptFlag();
XS.Comment("Get Invoke list count");
var xGetInvocationListMethod = typeof(MulticastDelegate).GetMethod("GetInvocationList");
Ldarg.DoExecute(aAssembler, xMethodInfo, 0);
XS.Call(LabelName.Get(xGetInvocationListMethod));
XS.Add(XSRegisters.ESP, 4);
XS.Pop(XSRegisters.EAX);
XS.Add(XSRegisters.EAX, 8);
XS.Set(XSRegisters.EBX, XSRegisters.EAX, sourceIsIndirect: true);
XS.Comment("Get invoke method");
XS.Add(XSRegisters.EAX, 8);
XS.Set(XSRegisters.EDI, XSRegisters.EAX, sourceIsIndirect: true, sourceDisplacement: 4);
XS.Comment("Get ArgSize");
int xArgSizeOffset = Ldfld.GetFieldOffset(typeof(global::System.Delegate), "$$ArgSize$$");
Ldarg.DoExecute(aAssembler, xMethodInfo, 0);
XS.Add(XSRegisters.ESP, 4);
XS.Pop(XSRegisters.ECX);
XS.Add(XSRegisters.ECX, (uint)xArgSizeOffset);
XS.Set(XSRegisters.ECX, XSRegisters.ECX, sourceIsIndirect: true);
XS.Comment("Set current invoke list index");
XS.Set(XSRegisters.EDX, 0);
XS.Label(".BEGIN_OF_LOOP");
{
XS.Compare(XSRegisters.EDX, XSRegisters.EBX);
XS.Jump(x86.ConditionalTestEnum.GreaterThanOrEqualTo, ".END_OF_INVOKE");
XS.PushAllRegisters();
XS.Comment("Check if delegate has $this");
XS.Set(XSRegisters.EDI, XSRegisters.EBP, sourceDisplacement: Ldarg.GetArgumentDisplacement(xMethodInfo, 0));
XS.Add(XSRegisters.EDI, 4);
XS.Set(XSRegisters.EDI, XSRegisters.EDI, sourceDisplacement: Ldfld.GetFieldOffset(xMethodInfo.MethodBase.DeclaringType, "System.Object System.Delegate._target"));
XS.Compare(XSRegisters.EDI, 0);
XS.Jump(x86.ConditionalTestEnum.Zero, ".NO_THIS");
XS.Label(".HAS_THIS");
XS.Push(XSRegisters.EDI);
XS.Push(0);
XS.Label(".NO_THIS");
XS.Set(XSRegisters.EDI, XSRegisters.EAX, sourceIsIndirect: true, sourceDisplacement: 4);
XS.Set(XSRegisters.EDI, XSRegisters.EDI, sourceDisplacement: Ldfld.GetFieldOffset(xMethodInfo.MethodBase.DeclaringType, "System.IntPtr System.Delegate._methodPtr"));
XS.Comment("Check if delegate has args");
XS.Compare(XSRegisters.ECX, 0);
XS.Jump(x86.ConditionalTestEnum.Zero, ".NO_ARGS");
XS.Label(".HAS_ARGS");
XS.Sub(XSRegisters.ESP, XSRegisters.ECX);
XS.Push(XSRegisters.EDI);
XS.Set(XSRegisters.EDI, XSRegisters.ESP);
XS.Add(XSRegisters.EDI, 4);
XS.Set(XSRegisters.ESI, XSRegisters.EBP);
XS.Add(XSRegisters.ESI, 8);
new x86.Movs {
Size = 8, Prefixes = x86.InstructionPrefixes.Repeat
};
XS.Pop(XSRegisters.EDI);
XS.Label(".NO_ARGS");
XS.Call(XSRegisters.EDI);
XS.PopAllRegisters();
XS.Increment(XSRegisters.EDX);
XS.Jump(".BEGIN_OF_LOOP");
}
XS.Label(".END_OF_INVOKE");
XS.Set(XSRegisters.EDX, XSRegisters.EBP, sourceDisplacement: Ldarg.GetArgumentDisplacement(xMethodInfo, 0));
XS.Set(XSRegisters.EDX, XSRegisters.EDX, sourceDisplacement: Ldfld.GetFieldOffset(xMethodInfo.MethodBase.DeclaringType, "$$ReturnsValue$$"));
XS.Compare(XSRegisters.EDX, 0);
XS.Jump(x86.ConditionalTestEnum.Equal, ".NO_RETURN");
XS.Label(".HAS_RETURN");
XS.Exchange(XSRegisters.EBP, XSRegisters.EDX, destinationDisplacement: 8);
XS.Exchange(XSRegisters.EBP, XSRegisters.EDX, destinationDisplacement: 4);
XS.Exchange(XSRegisters.EBP, XSRegisters.EDX, destinationIsIndirect: true);
XS.Push(XSRegisters.EDX);
XS.Set(XSRegisters.ESP, XSRegisters.EDI, destinationDisplacement: 12);
XS.Label(".NO_RETURN");
XS.EnableInterrupts();
}
public override void AssembleNew(Cosmos.Assembler.Assembler aAssembler, object aMethodInfo)
{
var xAssembler = (Cosmos.Assembler.Assembler)aAssembler;
var xMethodInfo = (Cosmos.IL2CPU.MethodInfo)aMethodInfo;
var xMethodBaseAsInfo = xMethodInfo.MethodBase as global::System.Reflection.MethodInfo;
if (xMethodBaseAsInfo.ReturnType != typeof(void))
{
throw new Exception("Events with return type not yet supported!");
}
new Comment("XXXXXXX");
new CPUx86.Xchg {
DestinationReg = CPUx86.Registers.BX, SourceReg = CPUx86.Registers.BX, Size = 16
};
/*
* EAX contains the GetInvocationList() array at the index at which it was last used
* EDX contains the index at which the EAX is
* EBX contains the number of items in the array
* ECX contains the argument size
*/
new CPUx86.ClrInterruptFlag();
new CPU.Label(".DEBUG");
//new CPU.Label("____DEBUG_FOR_MULTICAST___");
new CPU.Comment("move address of delgate to eax");
new CPUx86.Mov {
DestinationReg = CPUx86.Registers.EAX, SourceReg = CPUx86.Registers.EBP, SourceIsIndirect = true, SourceDisplacement = Ldarg.GetArgumentDisplacement(xMethodInfo, 0)
};
var xGetInvocationListMethod = typeof(MulticastDelegate).GetMethod("GetInvocationList");
new CPU.Comment("push address of delgate to stack");
new CPUx86.Push {
DestinationReg = CPUx86.Registers.EAX
}; //addrof this
new CPUx86.Call {
DestinationLabel = CPU.LabelName.Get(xGetInvocationListMethod)
};
new CPU.Comment("get address from return value -> eax");
new CPUx86.Pop {
DestinationReg = CPUx86.Registers.EAX
};
;//list
new CPU.Comment("eax+=8 is where the offset where an array's count is");
new CPUx86.Add {
DestinationReg = CPUx86.Registers.EAX, SourceValue = 8
}; //addrof list.count??
new CPU.Comment("store count in ebx");
new CPUx86.Mov {
DestinationReg = CPUx86.Registers.EBX, SourceReg = CPUx86.Registers.EAX, SourceIsIndirect = true
}; //list.count
new CPU.Comment("eax+=8 is where the offset where an array's items start");
new CPUx86.Add {
DestinationReg = CPUx86.Registers.EAX, SourceValue = 8
}; //why? -- start of list i think? MtW: the array's .Length is at +8
new CPUx86.Mov {
DestinationReg = CPUx86.Registers.EDI, SourceValue = 0
};
new CPU.Comment("ecx = ptr to delegate object");
new CPUx86.Mov {
DestinationReg = CPUx86.Registers.ECX, SourceReg = CPUx86.Registers.EBP, SourceIsIndirect = true, SourceDisplacement = Ldarg.GetArgumentDisplacement(xMethodInfo, 0)
}; //addrof the delegate
new CPU.Comment("ecx points to the size of the delegated methods arguments");
new CPUx86.Mov {
DestinationReg = CPUx86.Registers.ECX, SourceReg = CPUx86.Registers.ECX, SourceIsIndirect = true, SourceDisplacement = Ldfld.GetFieldOffset(xMethodInfo.MethodBase.DeclaringType, "$$ArgSize$$")
}; //the size of the arguments to the method? + 12??? -- 12 is the size of the current call stack.. i think
new CPUx86.Xor {
DestinationReg = CPUx86.Registers.EDX, SourceReg = CPUx86.Registers.EDX
};
;//make sure edx is 0
new CPU.Label(".BEGIN_OF_LOOP");
new CPUx86.Compare {
DestinationReg = CPUx86.Registers.EDX, SourceReg = CPUx86.Registers.EBX
}; //are we at the end of this list
new CPUx86.ConditionalJump {
Condition = CPUx86.ConditionalTestEnum.Equal, DestinationLabel = ".END_OF_INVOKE_"
}; //then we better stop
new CPUx86.Pushad();
new CPU.Comment("esi points to where we will copy the methods argumetns from");
new CPUx86.Mov {
DestinationReg = CPUx86.Registers.ESI, SourceReg = CPUx86.Registers.ESP
};
new CPU.Comment("edi = ptr to delegate object");
new CPUx86.Mov {
DestinationReg = CPUx86.Registers.EDI, SourceReg = CPUx86.Registers.EBP, SourceIsIndirect = true, SourceDisplacement = Ldarg.GetArgumentDisplacement(xMethodInfo, 0)
};
new CPU.Comment("edi = ptr to delegate object should be a pointer to the delgates context ie (this) for the methods ");
new CPUx86.Mov {
DestinationReg = CPUx86.Registers.EDI, SourceReg = CPUx86.Registers.EDI, SourceIsIndirect = true, SourceDisplacement = Ldfld.GetFieldOffset(xMethodInfo.MethodBase.DeclaringType, "System.Object System.Delegate._target")
};
new CPUx86.Compare {
DestinationReg = CPUx86.Registers.EDI, SourceValue = 0
};
new CPUx86.ConditionalJump {
Condition = CPUx86.ConditionalTestEnum.Zero, DestinationLabel = ".NO_THIS"
};
new CPUx86.Push {
DestinationReg = CPUx86.Registers.EDI
};
new CPU.Label(".NO_THIS");
new CPU.Comment("make space for us to copy the arguments too");
new CPUx86.Sub {
DestinationReg = CPUx86.Registers.ESP, SourceReg = CPUx86.Registers.ECX
};
new CPU.Comment("move the current delegate to edi");
new CPUx86.Mov {
DestinationReg = CPUx86.Registers.EDI, SourceReg = CPUx86.Registers.EAX, SourceIsIndirect = true
};
new CPU.Comment("move the methodptr from that delegate to edi ");
new CPUx86.Mov {
DestinationReg = CPUx86.Registers.EDI, SourceReg = CPUx86.Registers.EDI, SourceIsIndirect = true, SourceDisplacement = Ldfld.GetFieldOffset(xMethodInfo.MethodBase.DeclaringType, "System.IntPtr System.Delegate._methodPtr")
}; //
new CPU.Comment("save methodptr on the stack");
new CPUx86.Push {
DestinationReg = CPUx86.Registers.EDI
};
new CPU.Comment("move location to copy args to");
new CPUx86.Mov {
DestinationReg = CPUx86.Registers.EDI, SourceReg = CPUx86.Registers.ESP
};
new CPU.Comment("get above the saved methodptr");
new CPUx86.Add {
DestinationReg = CPUx86.Registers.EDI, SourceValue = 4
};
//we allocated the argsize on the stack once, and it we need to get above the original args
new CPU.Comment("we allocated argsize on the stack once");
new CPU.Comment("add 32 for the Pushad + 16 for the current stack + 4 for the return value");
//uint xToAdd = 32; // skip pushad data
//xToAdd += 4; // method pointer
new CPUx86.Mov {
DestinationReg = CPUx86.Registers.ESI, SourceReg = CPUx86.Registers.EBP
};
new CPUx86.Add {
DestinationReg = CPUx86.Registers.ESI, SourceValue = 8
}; // ebp+8 is first argument
new CPUx86.Movs {
Size = 8, Prefixes = CPUx86.InstructionPrefixes.Repeat
};
new CPUx86.Pop {
DestinationReg = CPUx86.Registers.EDI
};
new CPUx86.Call {
DestinationReg = CPUx86.Registers.EDI
};
new CPU.Comment("store return -- return stored into edi after popad");
new CPU.Comment("edi = ptr to delegate object");
new CPUx86.Mov {
DestinationReg = CPUx86.Registers.EDI, SourceReg = CPUx86.Registers.EBP, SourceIsIndirect = true, SourceDisplacement = Ldarg.GetArgumentDisplacement(xMethodInfo, 0)
};
new CPU.Comment("edi = ptr to delegate object should be a pointer to the delgates context ie (this) for the methods ");
new CPUx86.Mov {
DestinationReg = CPUx86.Registers.EDI, SourceReg = CPUx86.Registers.EDI, SourceIsIndirect = true, SourceDisplacement = Ldfld.GetFieldOffset(xMethodInfo.MethodBase.DeclaringType, "System.Object System.Delegate._target")
}; //i really dont get the +12, MtW: that's for the object header
new CPU.Label(".noTHIStoPop");
new CPUx86.Popad();
new CPUx86.INC {
DestinationReg = CPUx86.Registers.EDX
};
new CPUx86.Add {
DestinationReg = CPUx86.Registers.EAX, SourceValue = 4
};
new CPUx86.Jump {
DestinationLabel = ".BEGIN_OF_LOOP"
};
new CPU.Label(".END_OF_INVOKE_");
new CPU.Comment("get the return value");
new CPUx86.Mov {
DestinationReg = CPUx86.Registers.EDX, SourceReg = CPUx86.Registers.EBP, SourceIsIndirect = true, SourceDisplacement = Ldarg.GetArgumentDisplacement(xMethodInfo, 0)
}; //addrof the delegate
new CPUx86.Mov {
DestinationReg = CPUx86.Registers.EDX, SourceReg = CPUx86.Registers.EDX, SourceIsIndirect = true, SourceDisplacement = Ldfld.GetFieldOffset(xMethodInfo.MethodBase.DeclaringType, "$$ReturnsValue$$")
};
new CPUx86.Compare {
DestinationReg = CPUx86.Registers.EDX, SourceValue = 0
};
new CPUx86.ConditionalJump {
Condition = CPUx86.ConditionalTestEnum.Equal, DestinationLabel = ".noReturn"
};
//may have to expand the return... idk
new CPUx86.Xchg {
DestinationReg = CPUx86.Registers.EBP, DestinationIsIndirect = true, DestinationDisplacement = 8, SourceReg = CPUx86.Registers.EDX
};
new CPUx86.Xchg {
DestinationReg = CPUx86.Registers.EBP, DestinationIsIndirect = true, DestinationDisplacement = 4, SourceReg = CPUx86.Registers.EDX
};
new CPUx86.Xchg {
DestinationReg = CPUx86.Registers.EBP, DestinationIsIndirect = true, SourceReg = CPUx86.Registers.EDX
};
new CPUx86.Push {
DestinationReg = CPUx86.Registers.EDX
}; //ebp
new CPUx86.Mov {
DestinationReg = CPUx86.Registers.ESP, DestinationIsIndirect = true, DestinationDisplacement = 12, SourceReg = CPUx86.Registers.EDI
};
new CPU.Label(".noReturn");
new CPUx86.Sti();
}
public override void AssembleNew(Assembler aAssembler, object aMethodInfo)
{
var xMethodInfo = (Il2cpuMethodInfo)aMethodInfo;
/*
* EAX contains the GetInvocationList() array at the index at which it was last used
* EBX contains the number of items in the array
* ECX contains the argument size
* EDX contains the current index in the array
* ESI contains the size of the return value
* EDI contains the function pointer
*/
XS.ClearInterruptFlag();
XS.Comment("Get Invoke list count");
var xGetInvocationListMethod = typeof(MulticastDelegate).GetMethod("GetInvocationList");
Ldarg.DoExecute(aAssembler, xMethodInfo, 0);
XS.Call(LabelName.Get(xGetInvocationListMethod));
XS.Add(ESP, 4);
XS.Pop(EAX);
XS.Add(EAX, 8);
XS.Set(EBX, EAX, sourceIsIndirect: true);
XS.Comment("Get invoke method");
XS.Add(EAX, 8);
XS.Set(EDI, EAX, sourceIsIndirect: true, sourceDisplacement: 4); // this line can propably can be removed
XS.Comment("Get ArgSize");
int xArgSizeOffset = Ldfld.GetFieldOffset(typeof(Delegate), "$$ArgSize$$");
Ldarg.DoExecute(aAssembler, xMethodInfo, 0);
XS.Add(ESP, 4);
XS.Pop(ECX);
XS.Add(ECX, (uint)xArgSizeOffset);
XS.Set(ECX, ECX, sourceIsIndirect: true);
XS.Comment("Set current invoke list index");
XS.Set(EDX, 0);
XS.Comment("Make space for return value");
int returnSizeOffset = Ldfld.GetFieldOffset(typeof(Delegate), "$$ReturnSize$$");
Ldarg.DoExecute(aAssembler, xMethodInfo, 0);
XS.Add(ESP, 4);
XS.Pop(ESI);
XS.Add(ESI, (uint)returnSizeOffset);
XS.Set(ESI, ESI, sourceIsIndirect: true);
XS.Sub(ESP, ESI);
XS.Label(".BEGIN_OF_LOOP");
{
XS.Compare(EDX, EBX);
XS.Jump(x86.ConditionalTestEnum.GreaterThanOrEqualTo, ".END_OF_INVOKE");
XS.PushAllRegisters();
XS.Comment("Check if delegate has $this");
XS.Set(EDI, EBP, sourceDisplacement: Ldarg.GetArgumentDisplacement(xMethodInfo, 0));
XS.Add(EDI, 4);
XS.Set(EDI, EDI, sourceDisplacement: Ldfld.GetFieldOffset(xMethodInfo.MethodBase.DeclaringType, "System.Object System.Delegate._target"));
XS.Set(EDX, ECX); // edx contains the size of the arguments including $this
XS.Compare(EDI, 0);
XS.Jump(x86.ConditionalTestEnum.Zero, ".NO_THIS");
XS.Label(".HAS_THIS");
XS.Push(EDI);
XS.Set(EDI, EDI, sourceIsIndirect: true); // get type of target object
XS.Add(EDX, 4); // we have at least one int of $this
//TODO: In future we might be able to replace the following call with a check
//if the object is boxed and in that case assume its a struct
// safe info from registers which get trashed
XS.Push(EAX);
XS.Push(EBX);
XS.Push(ECX);
XS.Push(EDX);
XS.Push(EDI);
XS.Call(LabelName.Get(VTablesImplRefs.IsStructRef));
XS.Pop(EDI);
// restore values
XS.Pop(EDX);
XS.Pop(ECX);
XS.Pop(EBX);
XS.Pop(EAX);
// now check if target turned out to be struct
XS.Compare(EDI, 1);
XS.Jump(x86.ConditionalTestEnum.Equal, ".Struct"); //structs are just the pointer so we are already done
XS.Push(0);
XS.Add(EDX, 4);
XS.Jump(".NO_THIS");
XS.Label(".Struct");
XS.Add(ESP, ObjectUtils.FieldDataOffset, destinationIsIndirect: true);
XS.Label(".NO_THIS");
XS.Set(EDI, EAX, sourceIsIndirect: true, sourceDisplacement: 4);
XS.Set(EDI, EDI, sourceDisplacement: Ldfld.GetFieldOffset(xMethodInfo.MethodBase.DeclaringType, "System.IntPtr System.Delegate._methodPtr"));
XS.Set(EBX, 0); // initialise required extra space to 0
XS.Compare(ESI, EDX);
XS.Jump(x86.ConditionalTestEnum.LessThanOrEqualTo, ".NO_RETURN_VALUE_SPACE");
XS.Set(EBX, ESI);
XS.Sub(EBX, ECX);
XS.Label(".NO_RETURN_VALUE_SPACE");
XS.Comment("Check if delegate has args");
XS.Compare(ECX, 0);
XS.Jump(x86.ConditionalTestEnum.Zero, ".NO_ARGS");
XS.Label(".HAS_ARGS");
XS.Sub(ESP, ECX);
XS.Push(EDI);
XS.Set(EDI, ESP);
XS.Add(EDI, 4);
XS.Set(ESI, EBP);
XS.Compare(EBX, 0);
XS.Jump(x86.ConditionalTestEnum.Equal, ".NO_RETURN_EXTRA");
XS.Add(ESI, EBX); // to skip the extra space reserved for the return value
XS.Jump(".AFTER_ADJUST_ESI");
XS.Label(".NO_RETURN_EXTRA");
XS.Add(ESI, 8);
XS.Label(".AFTER_ADJUST_ESI");
new x86.Movs {
Size = 8, Prefixes = x86.InstructionPrefixes.Repeat
};
XS.Pop(EDI);
XS.Label(".NO_ARGS");
XS.Sub(ESP, EBX); // make extra space for the return value
XS.Call(EDI);
XS.Comment("If there is a return value copy it to holding place now");
Ldarg.DoExecute(aAssembler, xMethodInfo, 0);
XS.Add(ESP, 4);
XS.Pop(EAX);
XS.Add(EAX, (uint)returnSizeOffset);
XS.Set(EAX, EAX, sourceIsIndirect: true); // got size of return value
XS.Set(EDI, EBP);
XS.Sub(EDI, EAX);
XS.Label(".RETURN_VALUE_LOOP_START");
XS.Compare(EAX, 0);
XS.Jump(x86.ConditionalTestEnum.LessThanOrEqualTo, ".RETURN_VALUE_LOOP_END");
XS.Pop(EBX);
XS.Set(EDI, EBX, destinationIsIndirect: true);
XS.Add(EDI, 4);
XS.Sub(EAX, 4);
XS.Jump(".RETURN_VALUE_LOOP_START");
XS.Label(".RETURN_VALUE_LOOP_END");
XS.PopAllRegisters();
XS.Increment(EDX);
XS.Jump(".BEGIN_OF_LOOP");
}
XS.Label(".END_OF_INVOKE");
XS.EnableInterrupts();
}
/// <summary>
/// <para>This method implements Multicast Invoke. This means that it should call all delegates
/// in the current multicast delegate. </para>
/// <para>The argument size is available in the <code>$$ArgSize$$</code> field. This value is already rounded to 4byte boundaries</para>
/// </summary>
/// <param name="aAssembler"></param>
public override void AssembleNew(Assembler.Assembler aAssembler, object aMethodInfo)
{
if (aMethodInfo == null)
{
throw new Exception("This AssemblerMethod needs MethodInfo!");
}
/*
* EAX contains the GetInvocationList() array at the index at which it was last used
* EDX contains the index at which the EAX is
* EBX contains the number of items in the array
* ECX contains the argument size
*/
var xMethodInfo = (MethodInfo)aMethodInfo;
new Label("____DEBUG_FOR_MULTICAST___");
// new CPUx86.Cli();//DEBUG ONLY
//#warning reenable interupts when issue is fixed!!!
new Comment("move address of delgate to eax");
new CPUx86.Mov
{
DestinationReg = CPUx86.Registers.EAX,
SourceReg = CPUx86.Registers.EBP,
SourceIsIndirect = true,
SourceDisplacement = Ldarg.GetArgumentDisplacement(xMethodInfo, 0)
};
var xGetInvocationListMethod = typeof(MulticastDelegate).GetMethod("GetInvocationList");
new Comment("push address of delgate to stack");
new CPUx86.Push {
DestinationReg = CPUx86.Registers.EAX
}; //addrof this
new CPUx86.Call {
DestinationLabel = LabelName.Get(xGetInvocationListMethod)
};
new Comment("get address from return value -> eax");
new CPUx86.Pop {
DestinationReg = CPUx86.Registers.EAX
};; //list
new Comment("eax+=8 is where the offset where an array's count is");
new CPUx86.Add {
DestinationReg = CPUx86.Registers.EAX, SourceValue = 8
}; //addrof list.count??
new Comment("store count in ebx");
new CPUx86.Mov {
DestinationReg = CPUx86.Registers.EBX, SourceReg = CPUx86.Registers.EAX, SourceIsIndirect = true
}; //list.count
new Comment("eax+=8 is where the offset where an array's items start");
new CPUx86.Add {
DestinationReg = CPUx86.Registers.EAX, SourceValue = 8
}; //why? -- start of list i think? MtW: the array's .Length is at +8
new CPUx86.Mov {
DestinationReg = CPUx86.Registers.EDI, SourceValue = 0
};
new Comment("ecx = ptr to delegate object");
new CPUx86.Mov {
DestinationReg = CPUx86.Registers.ECX, SourceReg = CPUx86.Registers.EBP, SourceIsIndirect = true, SourceDisplacement = Ldarg.GetArgumentDisplacement(xMethodInfo, 0)
}; //addrof the delegate
new Comment("ecx points to the size of the delegated methods arguments");
new CPUx86.Mov {
DestinationReg = CPUx86.Registers.ECX, SourceReg = CPUx86.Registers.ECX, SourceIsIndirect = true, SourceDisplacement = (Ldfld.GetFieldOffset(xMethodInfo.MethodBase.DeclaringType, "$$ArgSize$$"))
}; //the size of the arguments to the method? + 12??? -- 12 is the size of the current call stack.. i think
new CPUx86.Xor {
DestinationReg = CPUx86.Registers.EDX, SourceReg = CPUx86.Registers.EDX
};; //make sure edx is 0
new Label(".BEGIN_OF_LOOP");
new CPUx86.Compare {
DestinationReg = CPUx86.Registers.EDX, SourceReg = CPUx86.Registers.EBX
}; //are we at the end of this list
new CPUx86.ConditionalJump {
Condition = CPUx86.ConditionalTestEnum.Equal, DestinationLabel = ".END_OF_INVOKE_"
}; //then we better stop
//new CPUx86.Compare("edx", 0);
//new CPUx86.JumpIfLessOrEqual(".noreturnYet");
//new CPUx86.Add("esp", 4);
//new CPU.Label(".noreturnYet");
//new CPU.Comment("space for the return value");
//new CPUx86.Pushd("0");
new CPUx86.Pushad();
new Comment("esi points to where we will copy the methods argumetns from");
new CPUx86.Mov {
DestinationReg = CPUx86.Registers.ESI, SourceReg = CPUx86.Registers.ESP
};
new Comment("edi = ptr to delegate object");
new CPUx86.Mov {
DestinationReg = CPUx86.Registers.EDI, SourceReg = CPUx86.Registers.EBP, SourceIsIndirect = true, SourceDisplacement = Ldarg.GetArgumentDisplacement(xMethodInfo, 0)
};
new Comment("edi = ptr to delegate object should be a pointer to the delgates context ie (this) for the methods ");
new CPUx86.Mov {
DestinationReg = CPUx86.Registers.EDI, SourceReg = CPUx86.Registers.EDI, SourceIsIndirect = true, SourceDisplacement = (Ldfld.GetFieldOffset(xMethodInfo.MethodBase.DeclaringType, "System.Object System.Delegate._target"))
}; //i really dont get the +12. MtW: +12 because of extra header of the type (object type, object id, field count)
new CPUx86.Compare {
DestinationReg = CPUx86.Registers.EDI, SourceValue = 0
};
new CPUx86.ConditionalJump {
Condition = CPUx86.ConditionalTestEnum.Zero, DestinationLabel = ".NO_THIS"
};
new CPUx86.Push {
DestinationReg = CPUx86.Registers.EDI
};
new Label(".NO_THIS");
new Comment("make space for us to copy the arguments too");
new CPUx86.Sub {
DestinationReg = CPUx86.Registers.ESP, SourceReg = CPUx86.Registers.ECX
};
new Comment("move the current delegate to edi");
new CPUx86.Mov {
DestinationReg = CPUx86.Registers.EDI, SourceReg = CPUx86.Registers.EAX, SourceIsIndirect = true
};
new Comment("move the methodptr from that delegate to edi ");
new CPUx86.Mov {
DestinationReg = CPUx86.Registers.EDI, SourceReg = CPUx86.Registers.EDI, SourceIsIndirect = true, SourceDisplacement = Ldfld.GetFieldOffset(xMethodInfo.MethodBase.DeclaringType, "System.IntPtr System.Delegate._methodPtr")
}; //
new Comment("save methodptr on the stack");
new CPUx86.Push {
DestinationReg = CPUx86.Registers.EDI
};
new Comment("move location to copy args to");
new CPUx86.Mov {
DestinationReg = CPUx86.Registers.EDI, SourceReg = CPUx86.Registers.ESP
};
new Comment("get above the saved methodptr");
new CPUx86.Add {
DestinationReg = CPUx86.Registers.EDI, SourceValue = 4
};
//we allocated the argsize on the stack once, and it we need to get above the original args
new Comment("we allocated argsize on the stack once");
new Comment("add 32 for the Pushad + 16 for the current stack + 4 for the return value");
new CPUx86.Add {
DestinationReg = CPUx86.Registers.ESI, SourceValue = 52
};
new CPUx86.Movs {
Size = 8, Prefixes = CPUx86.InstructionPrefixes.Repeat
};
new CPUx86.Pop {
DestinationReg = CPUx86.Registers.EDI
};
new CPUx86.Call {
DestinationReg = CPUx86.Registers.EDI
};
new Comment("store return -- return stored into edi after popad");
//new CPUx86.Move("edx", "[" + MethodInfo.Arguments[0].VirtualAddresses[0] + "]");//addrof the delegate
//new CPUx86.Move("edx", "[edx+" + (MethodInfo.Arguments[0].TypeInfo.Fields["$$ReturnsValue$$"].Offset + 12) + "]");
//new CPUx86.Compare(Registers_Old.EDX, 0);
//new CPUx86.JumpIfEqual(".getReturn");
//new CPUx86.Move(Registers_Old.EAX, "[esp]");
//new CPUx86.Move("[esp+0x20]", Registers_Old.EAX);
//new CPU.Label(".getReturn");
new Comment("edi = ptr to delegate object");
new CPUx86.Mov {
DestinationReg = CPUx86.Registers.EDI, SourceReg = CPUx86.Registers.EBP, SourceIsIndirect = true, SourceDisplacement = Cosmos.IL2CPU.X86.IL.Ldarg.GetArgumentDisplacement(xMethodInfo, 0)
};
new Comment("edi = ptr to delegate object should be a pointer to the delgates context ie (this) for the methods ");
new CPUx86.Mov {
DestinationReg = CPUx86.Registers.EDI, SourceReg = CPUx86.Registers.EDI, SourceIsIndirect = true, SourceDisplacement = Ldfld.GetFieldOffset(xMethodInfo.MethodBase.DeclaringType, "System.Object System.Delegate._target")
}; //i really dont get the +12, MtW: that's for the object header
//new CPUx86.Compare("edi", "0");
//new CPUx86.JumpIfEqual(".noTHIStoPop");
//new CPUx86.Move("edx", "[" + MethodInfo.Arguments[0].VirtualAddresses[0] + "]");//addrof the delegate
//new CPUx86.Move("edx", "[edx+" + (MethodInfo.Arguments[0].TypeInfo.Fields["$$ReturnsValue$$"].Offset + 12) + "]");
//new CPUx86.Compare(Registers_Old.EDX, 0);
//new JumpIfNotEqual(".needToPopThis");
//new CPU.Comment("ecx = ptr to delegate object");
//new CPUx86.Move("ecx", "[" + MethodInfo.Arguments[0].VirtualAddresses[0] + "]");//addrof the delegate
//new CPU.Comment("ecx points to the size of the delegated methods arguments");
//new CPUx86.Move("ecx", "[ecx + " + (MethodInfo.Arguments[0].TypeInfo.Fields["$$ArgSize$$"].Offset + 12) + "]");//the size of the arguments to the method? + 12??? -- 12 is the size of the current call stack.. i think
//new CPUx86.Compare("ecx", "0");
//new CPUx86.JumpIfLessOrEqual(".noTHIStoPop");
//new CPU.Label(".needToPopThis");
//new CPUx86.Pop("edi");
//new CPUx86.Move("[esp]", "edi");
new Label(".noTHIStoPop");
new CPUx86.Popad();
new CPUx86.INC {
DestinationReg = CPUx86.Registers.EDX
};
new CPUx86.Add {
DestinationReg = CPUx86.Registers.EAX, SourceValue = 4
};
new CPUx86.Jump {
DestinationLabel = ".BEGIN_OF_LOOP"
};
new Label(".END_OF_INVOKE_");
new Comment("get the return value");
//new CPUx86.Pop("eax");
new CPUx86.Mov {
DestinationReg = CPUx86.Registers.EDX, SourceReg = CPUx86.Registers.EBP, SourceIsIndirect = true, SourceDisplacement = Ldarg.GetArgumentDisplacement(xMethodInfo, 0)
}; //addrof the delegate
new CPUx86.Mov {
DestinationReg = CPUx86.Registers.EDX, SourceReg = CPUx86.Registers.EDX, SourceIsIndirect = true, SourceDisplacement = Ldfld.GetFieldOffset(xMethodInfo.MethodBase.DeclaringType, "$$ReturnsValue$$")
};
new CPUx86.Compare {
DestinationReg = CPUx86.Registers.EDX, SourceValue = 0
};
new CPUx86.ConditionalJump {
Condition = CPUx86.ConditionalTestEnum.Equal, DestinationLabel = ".noReturn"
};
//may have to expand the return... idk
new CPUx86.Xchg {
DestinationReg = CPUx86.Registers.EBP, DestinationIsIndirect = true, DestinationDisplacement = 8, SourceReg = CPUx86.Registers.EDX
};
new CPUx86.Xchg {
DestinationReg = CPUx86.Registers.EBP, DestinationIsIndirect = true, DestinationDisplacement = 4, SourceReg = CPUx86.Registers.EDX
};
new CPUx86.Xchg {
DestinationReg = CPUx86.Registers.EBP, DestinationIsIndirect = true, SourceReg = CPUx86.Registers.EDX
};
new CPUx86.Push {
DestinationReg = CPUx86.Registers.EDX
}; //ebp
new CPUx86.Mov {
DestinationReg = CPUx86.Registers.ESP, DestinationIsIndirect = true, DestinationDisplacement = 12, SourceReg = CPUx86.Registers.EDI
};
new Label(".noReturn");
// new CPUx86.Sti();
//#warning remove this ^ sti call when issue is fixed!!!
//MethodInfo.Arguments[0].
// new CPUx86.Move("ebx", "[eax + " + (MethodInfo.Arguments[0].TypeInfo.Fields["$$ArgSize$$"].Offset + 12) + "]");
//new CPUx86.Move("eax", CPUx86.Registers_Old.
}
public override void AssembleNew(Cosmos.Assembler.Assembler aAssembler, object aMethodInfo)
{
var xAssembler = (Cosmos.Assembler.Assembler)aAssembler;
var xMethodInfo = (Cosmos.IL2CPU.MethodInfo)aMethodInfo;
var xMethodBaseAsInfo = xMethodInfo.MethodBase as global::System.Reflection.MethodInfo;
if (xMethodBaseAsInfo.ReturnType != typeof(void))
{
throw new Exception("Events with return type not yet supported!");
}
XS.Comment("XXXXXXX");
XS.Exchange(XSRegisters.BX, XSRegisters.BX);
/*
* EAX contains the GetInvocationList() array at the index at which it was last used
* EDX contains the index at which the EAX is
* EBX contains the number of items in the array
* ECX contains the argument size
*/
XS.ClearInterruptFlag();
XS.Label(".DEBUG");
//XS.Label("____DEBUG_FOR_MULTICAST___");
XS.Comment("move address of delegate to eax");
XS.Set(XSRegisters.EAX, XSRegisters.EBP, sourceDisplacement: Ldarg.GetArgumentDisplacement(xMethodInfo, 0));
var xGetInvocationListMethod = typeof(MulticastDelegate).GetMethod("GetInvocationList");
XS.Comment("push address of delgate to stack");
XS.Push(XSRegisters.EAX);//addrof this
XS.Call(LabelName.Get(xGetInvocationListMethod));
XS.Comment("get address from return value -> eax");
XS.Pop(XSRegisters.EAX);
;//list
XS.Comment("eax+=8 is where the offset where an array's count is");
XS.Set(XSRegisters.EAX, XSRegisters.EAX, sourceIsIndirect: true);
XS.Add(XSRegisters.EAX, 8); //addrof list.Length
XS.Comment("store count in ebx");
XS.Set(XSRegisters.EBX, XSRegisters.EAX, sourceIsIndirect: true); //list.count
XS.Comment("eax+=8 is where the offset where an array's items start");
XS.Add(XSRegisters.EAX, 8); // Put pointer at the first item in the list.
XS.Set(XSRegisters.EDI, 0);
XS.Comment("ecx = ptr to delegate object");
XS.Set(XSRegisters.ECX, XSRegisters.EBP, sourceDisplacement: Ldarg.GetArgumentDisplacement(xMethodInfo, 0));//addrof the delegate
XS.Comment("ecx points to the size of the delegated methods arguments");
XS.Set(XSRegisters.ECX, XSRegisters.ECX, sourceIsIndirect: true);
XS.Set(XSRegisters.ECX, XSRegisters.ECX, sourceDisplacement: Ldfld.GetFieldOffset(xMethodInfo.MethodBase.DeclaringType, "$$ArgSize$$")); //the size of the arguments to the method? + 12??? -- 12 is the size of the current call stack.. i think
XS.Xor(XSRegisters.EDX, XSRegisters.EDX);
; //make sure edx is 0
XS.Label(".BEGIN_OF_LOOP");
{
XS.Compare(XSRegisters.EDX, XSRegisters.EBX); //are we at the end of this list
XS.Jump(CPUx86.ConditionalTestEnum.GreaterThanOrEqualTo, ".END_OF_INVOKE_"); //then we better stop
XS.PushAllRegisters();
XS.Comment("esi points to where we will copy the methods argumetns from");
XS.Set(XSRegisters.ESI, XSRegisters.ESP);
XS.Comment("edi = ptr to delegate object");
XS.Set(XSRegisters.EDI, XSRegisters.EBP, sourceDisplacement: Ldarg.GetArgumentDisplacement(xMethodInfo, 0));
XS.Set(XSRegisters.EDI, XSRegisters.EDI, sourceIsIndirect: true); // dereference handle
XS.Comment("edi = ptr to delegate object should be a pointer to the delgates context ie (this) for the methods ");
XS.Set(XSRegisters.EDI, XSRegisters.EDI, sourceDisplacement: Ldfld.GetFieldOffset(xMethodInfo.MethodBase.DeclaringType, "System.Object System.Delegate._target"));
XS.Compare(XSRegisters.EDI, 0);
XS.Jump(CPUx86.ConditionalTestEnum.Zero, ".NO_THIS");
XS.Push(XSRegisters.EDI);
XS.Label(".NO_THIS");
XS.Comment("make space for us to copy the arguments too");
XS.Sub(XSRegisters.ESP, XSRegisters.ECX);
XS.Comment("move the current delegate to edi");
XS.Set(XSRegisters.EDI, XSRegisters.EAX, sourceIsIndirect: true);
XS.Set(XSRegisters.EDI, XSRegisters.EDI, sourceIsIndirect: true); // dereference
XS.Comment("move the methodptr from that delegate to edi ");
XS.Set(XSRegisters.EDI, XSRegisters.EDI, sourceDisplacement: Ldfld.GetFieldOffset(xMethodInfo.MethodBase.DeclaringType, "System.IntPtr System.Delegate._methodPtr")); //
XS.Comment("save methodptr on the stack");
XS.Push(XSRegisters.EDI);
XS.Comment("move location to copy args to");
XS.Set(XSRegisters.EDI, XSRegisters.ESP);
XS.Add(XSRegisters.EDI, 4);
//new CPU.Comment("get above the saved methodptr");
//XS.Sub(XSRegisters.ESP, 4);
//we allocated the argsize on the stack once, and it we need to get above the original args
XS.Comment("we allocated argsize on the stack once");
XS.Comment("add 32 for the Pushad + 16 for the current stack + 4 for the return value");
//uint xToAdd = 32; // skip pushad data
//xToAdd += 4; // method pointer
XS.Set(XSRegisters.ESI, XSRegisters.EBP);
XS.Add(XSRegisters.ESI, 8); // ebp+8 is first argument
new CPUx86.Movs {
Size = 8, Prefixes = CPUx86.InstructionPrefixes.Repeat
};
XS.Pop(XSRegisters.EDI);
XS.Label(".BeforeCall");
XS.Call(XSRegisters.EDI);
XS.Comment("store return -- return stored into edi after popad");
XS.Comment("edi = ptr to delegate object");
XS.Set(XSRegisters.EDI, XSRegisters.EBP, sourceDisplacement: Ldarg.GetArgumentDisplacement(xMethodInfo, 0));
XS.Comment("edi = ptr to delegate object should be a pointer to the delgates context ie (this) for the methods ");
XS.Set(XSRegisters.EDI, XSRegisters.EDI, sourceIsIndirect: true); // dereference handle
XS.Set(XSRegisters.EDI, XSRegisters.EDI, sourceDisplacement: Ldfld.GetFieldOffset(xMethodInfo.MethodBase.DeclaringType, "System.Object System.Delegate._target")); //i really dont get the +12, MtW: that's for the object header
XS.Label(".noTHIStoPop");
XS.PopAllRegisters();
XS.Increment(XSRegisters.EDX);
XS.Add(XSRegisters.EAX, 4);
XS.Jump(".BEGIN_OF_LOOP");
}
XS.Label(".END_OF_INVOKE_");
XS.Comment("get the return value");
XS.Set(XSRegisters.EDX, XSRegisters.EBP, sourceDisplacement: Ldarg.GetArgumentDisplacement(xMethodInfo, 0)); //addrof the delegate
XS.Set(XSRegisters.EDX, XSRegisters.EDX, sourceIsIndirect: true); // dereference handle
XS.Set(XSRegisters.EDX, XSRegisters.EDX, sourceDisplacement: Ldfld.GetFieldOffset(xMethodInfo.MethodBase.DeclaringType, "$$ReturnsValue$$"));
XS.Compare(XSRegisters.EDX, 0);
XS.Jump(CPUx86.ConditionalTestEnum.Equal, ".noReturn");
//may have to expand the return... idk
XS.Exchange(XSRegisters.EBP, XSRegisters.EDX, destinationDisplacement: 8);
XS.Exchange(XSRegisters.EBP, XSRegisters.EDX, destinationDisplacement: 4);
XS.Exchange(XSRegisters.EBP, XSRegisters.EDX, destinationIsIndirect: true);
XS.Push(XSRegisters.EDX);//ebp
XS.Set(XSRegisters.ESP, XSRegisters.EDI, destinationDisplacement: 12);
XS.Label(".noReturn");
XS.EnableInterrupts();
}