Article View: comp.sys.mac
Article #25024Re: stack sniffer evils
From: Paul Smethers
Date: Sat, 13 Feb 1988 08:09
Date: Sat, 13 Feb 1988 08:09
19 lines
1391 bytes
1391 bytes
In article <1142@iscuva.ISCS.COM> jimc@iscuva.ISCS.COM (Jim Cathey) writes: >In article <363@moncsbruce.oz> conybear@moncsbruce.oz (Roland Conybeare) writes: >>The solution: >> The ideal solution to this inappropriate bomb would be for Apple >>to have provided some way of turning off the stack sniffer. The next best >>thing would be to do it ourselves. > >The stack sniffer is easily disabled by placing a zero in the global >variable StkLowPt ($110-$113). The sniffer code then ignores the >stack. When you're done, you should restore it to whatever it was so >that the stack sniffer will start working again. I don't remember >where this was documented, but it is a relatively well-known technique. > I'm not sure if your new code is generated from a compiler or not, but if you have control over it yourself (i.e. its your own assembler output), then you may consider using a register other than A7 for your stack pointer. Paul Smethers SmethersBarnes
Technical Details
Message-ID:
<493@psu-cs.UUCP>Path:
arc1-ca.pugleaf.net!utzoo!utgpu!water!watmath!clyde!rutgers!mit-eddie!uw-beaver!tektronix!reed!psu-cs!smethersReferences:
<363@moncsbruce.oz> <1142@iscuva.ISCS.COM>Show Full Headers
Complete Article Headers
Path: arc1-ca.pugleaf.net!utzoo!utgpu!water!watmath!clyde!rutgers!mit-eddie!uw-beaver!tektronix!reed!psu-cs!smethers From: smethers@psu-cs.UUCP (Paul Smethers) Newsgroups: comp.sys.mac Subject: Re: stack sniffer evils Message-ID: <493@psu-cs.UUCP> Date: 13 Feb 88 08:09:44 GMT References: <363@moncsbruce.oz> <1142@iscuva.ISCS.COM> Reply-To: smethers@psu-cs.UUCP (Paul Smethers) Organization: SmethersBarnes Lines: 19