Re: A86:ret

To: <assembly-86@lists.ticalc.org>
Subject: Re: A86:ret
From: "David Phillips" <david@acz.org>
Date: Tue, 19 Oct 1999 00:34:50 -0600
References: <002b01bf19c3$60da4e60$e2674c0c@computer>
Reply-To: assembly-86@lists.ticalc.org


Just like writing a "perfect" dissassembler would be impossible without
running the code or incredible AI (as smart as a human), there would be no
way to tell.  Have to run it and see if it crashes.  A program doesn't have
to end with a physical ret, either -- it just has to return to the OS.  Like
a <jp _clrLCD> would be the same as <call _clrLCD \ ret> but be a byte
shorter.  Run it in VTI and see if it crashes.

What kind of people would do that, anyway?

> I learned the hardway that things don't work if you don't put a "ret" at
the
> end of a program, but does anyone know if there are any programs that can
> tell me if an asm program doesn't have an ret? (I know a few people who do
> this to existing programs to turn them into viruses.)

Follow-Ups:

A86: String Writing

From: "Akshay Dhalwala" <akdjr@softhome.net>

Re: A86:ret

From: Brock <rbw3@dana.ucc.nau.edu>

References:

A86:ret

From: "Jeff Barrett" <kanebarrett@worldnet.att.net>