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Date: Sat, 24 Nov 2001 19:51:36 +0100
To: djgpp AT delorie DOT com
From: Martin Steuer <martinSteuer AT gmx DOT de>
Subject: Problems with gdb???
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Reply-To: djgpp AT delorie DOT com

Hello to all,

Please reply also directly to me.

I've got the following problem, i've written my own Interrupt Wrapper so 
that i can get normal C Rountines called upon hardware interrupts. After 
debugging the wrapper and the function which i call to install a C Routine 
as the IRQ Handler my first test programs ran fine. So I moved on to code 
stuff where I need this IRQ Wrapper.

I got some problems and tried to debug the program under RHIDE (v 1.4.9).
BUT single stepping thru this program was nearly impossible after my IRQ 
Handler had been installed -- the debugging sessions crashed very often the 
whole system.

I know that RHIDE only uses gdb for debugging so i tried single stepping 
with gdb directly (i'm not very familiar with it though), and i got the 
same system crashes. When completly executing the program under gdb or 
RHIDE without using any breakpoints i got no problems (by the way i'm using 
gdb v5.0).

So finally here's my question: Does anyone know about gdb having problems 
with hooked hardware interrupts? I hardly tried to find any problems in my 
wrapper but i can't see any, the program runs fine without being debugged.
But it would also be very hard or even impossible to remove all Hardware 
Interrupt Handlers everytime before debugging.

Thanks guys in advance,
Martin