GDB partially works (for me)

Steven Grunza grunza at
Tue Aug 19 15:08:16 UTC 2008

Given the large number of boards and types of processors supported by
RTEMS, we need more info about your environment.  Details such as CPU
and board would be helpful. 

>-----Original Message-----
>From: rtems-users-bounces at 
>[mailto:rtems-users-bounces at] On Behalf Of Gene Smith
>Sent: Tuesday, August 19, 2008 10:33 AM
>To: rtems-users at
>Subject: GDB partially works (for me)
>My system now runs OK (networking, serial, timers etc) and 
>runs the test/demo programs OK and passes stress tests. If I 
>set a breakpoint before leaving start.S I can hit the 
>breakpoint and do the usual stuff. 
>But if I try to continue after arriving at a breakpoint (such 
>as at Init), nothing works (no timer, no networking no serial) 
>and all I see happening is the idle task. Sometimes it will 
>crash after (data abort
>dump) this but usually just does idle loop.
>I can look at all the registers that mask or turn off 
>interrupts and they look OK. So I am not sure what causes it 
>to completely shut down or go unstable after a b.p. is hit.
>I do notice that sometimes I step into RTEMS code involving a 
>watchdog (watchdogtickle). Not sure how this is used or if it 
>might be shutting me down while at the breakpoint.
>I get the same result with rtems4.8-gdb or insight. In both 
>cases I am using a Macraigor MPDemon jtag debugger box.
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