Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!uunet!cbmvax!cbmehq!cbmfra!swinjm!forgeas
From: forgeas@swinjm.UUCP (Jean-Michel Forgeas)
Newsgroups: comp.sys.amiga.programmer
Subject: Re: Help! (AmigaDOS CreateProc/LoadSeg)
Message-ID: <18cb4d63.ARN0b56@swinjm.UUCP>
Date: 8 Mar 91 13:06:43 GMT
References: <63329@eerie.acsu.Buffalo.EDU> <19578@cbmvax.commodore.com> <06417.AA06417@babylon.rmt.sub.org>
Reply-To: forgeas@swinjm.UUCP (Jean-Michel Forgeas)
Followup-To: comp.sys.amiga.programmer
Organization: The Software Winery
Lines: 29

In article <06417.AA06417@babylon.rmt.sub.org>, Ralph Babel writes:

> In article <19578@cbmvax.commodore.com>,
> ken@cbmvax.commodore.com (Ken Farinsky - CATS) writes:
>
> > LoadSeg() needs a BPTR to a seg list, which can be faked
> > like:
> >
> >         /* From Mike Sinz AmigaMail example */
> >         struct CodeHdr
> >                 {
> >                 ULONG SegSize;   /* sizeof(struct CodeHdr) */
> >                 ULONG NextSeg;   /* Must be NULL */
> >                 UWORD JumpInstr; /* set to 0x4EF9 (a jump instruction) */
> >                 APTR Function;   /* a pointer to the function */
> >                 }
>
> I'd call this self-modifying code.

I don't see where you find self-modifying code in the example above.
All I see is data (while there is no process running on it).
Effectively after CreateProc() on it this data becomes code, but
there is no modification of the code after CreateProc().
--
                                     \___/
Jean-Michel Forgeas                   \-/
cbmvax!cbmehq!cbmfra!swinjm!forgeas    |    The Software Winery
                                      -^-
                           And, where is the universe ?