Amiga-C (5/223)

From:Sensei
Date:9 Aug 2001 at 01:14:20
Subject:[amiga-c] Re: BOOPSI and Asm

Czesc dave@digital.prestel.co.uk!

Dnia 08-Aug-01, dave@digital.prestel.co.uk napisa�:

> DoMethod(obj,SOME_Method,SOME_Param1,data1,SOME_Param2,data2)
> but i'm unsure how to convert this into asm code
> Dave

DoMethod() is vararg equivalent of DoMethodA(), and DoMethodA() is the same as
CoerceMethodA() with OCLASS() class and it's the same as CallHookPkt() ;), so
you can write:

MOVE.L data2,-(SP)
MOVE.L SOME_Param2,-(SP)
MOVE.L data1,-(SP)
MOVE.L SOME_Param1,-(SP)
PEA #SOME_Mathod or MOVE.L #SOME_Method,-(SP)
MOVE.L SP,A1
MOVE.L obj,A2
MOVE.L -4(A2),A0 ; hook address == dispatcher == OCLASS( obj );
MOVE.L _UtilityBase,A6
JSR _LVOCallHookPkt(A6)
LEA 5*4(SP),SP

or instead of CallHookPkt() (you'll don't need to open utility.library in that
case):

MOVE.L h_Entry(A0),A3
JSR (A3)

or if you don't want to waste another register:

PEA end(PC)
MOVE.L h_Entry(A0),-(SP)
RTS
end:

Regards!


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