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From: holland@m2.csc.ti.com (Fred Hollander)
Newsgroups: comp.sys.mac.programmer
Subject: Re: LSC - how to find if the debugger is running?
Message-ID: <72491@ti-csl.csc.ti.com>
Date: 16 Mar 89 20:44:06 GMT
References: <1806@viscous.sco.COM> <2547@ilium.cs.swarthmore.edu>
Sender: news@ti-csl.csc.ti.com
Reply-To: holland@m2.UUCP (Fred Hollander)
Organization: TI Computer Science Center, Dallas
Lines: 25

In article <2547@ilium.cs.swarthmore.edu> jackiw@ilium.UUCP (Nick Jackiw) writes:
>In article <1806@viscous.sco.COM> jamesm@sco.COM (James M. Moore) writes:
>> I'd like to be able to do somthing like this in LSC 3.0:
>> 
>> 	if (DebuggerIsActive())
>> 		DebugStr("\pNow in Macsbugs");
>> 	...
>So what you want to do is determine whether trap $A9FF invokes the built-in
>debugger (worthless for breakpoints) or something else (i. e. your better-
>debugger-of-choice). Taking a clean (debugger-free) system, write a little
>program to print out the result of NGetTrapAddress($FF,ToolTrap) [cf. IM
>IV-234].  This is the address which a debuggerless Mac will hit; let's say
>it's X.  Your DebuggerIsActive function is now the comparison
>NGetTrapAddress($FF,ToolTrap)<>X; i. e. whether someone has patched this
>to a different (and presumably better) debugger.

A more general solution would be to check the address against the ROMbase.
If it's in ROM, it isn't MacsBug or TMON.

Fred Hollander
Computer Science Center
Texas Instruments, Inc.
hollander@ti.com

The above statements are my own and not representative of Texas Instruments.