Path: utzoo!utgpu!news-server.csri.toronto.edu!rutgers!cbmvax!cbmehq!babylon!rbabel
From: rbabel@babylon.rmt.sub.org (Ralph Babel)
Newsgroups: comp.sys.amiga.programmer
Subject: Re: Help! (AmigaDOS CreateProc/LoadSeg)
Message-ID: <06533.AA06533@babylon.rmt.sub.org>
Date: 11 Mar 91 19:23:12 GMT
References: <63329@eerie.acsu.Buffalo.EDU> <19578@cbmvax.commodore.com> <06417.AA06417@babylon.rmt.sub.org> <ROSENBER.91Mar11193029@ra.abo.fi>
Reply-To: cbmvax.commodore.com!cbmehq!babylon!rbabel (Ralph Babel)
Lines: 18

In article <ROSENBER.91Mar11193029@ra.abo.fi>,
rosenber@ra.abo.fi (Robin Rosenberg INF) writes:

> I have a slightly different version, that does not contain
> self-modifying code.  Instead of patching the jump
> instrction, I patch data for the instruction. This code is
> of course not reentrant.

Not being reentrant is kind of ugly, of course, but I see
two more potential problems: Static structures are not
necessarily longword-aligned (at least with SAS/C 5.10a),
and - structures usually being located in a data hunk - a
future version of LoadSeg() _could_ selectively clear the
code cache only for the address ranges of the code hunks
just loaded, not data and bss - a useful optimization for
very big caches. This is purely fictitious, of course.

Ralph