Jivin Scott Cytacki lays it down ...
> My original problem: (which I still haven't figured out)
> I can "continue" only if it is the very first command I try. Every
> other time I continue the ucsimm crashes with different errors each
> However, I can use the "go" command multiple times without a problem.
Not sure about this one. One problem with ptrace is that it doesn't verify
the read areas. This means gdb will crash the CPU if it accesses any
invalid memory. I have attached a patch that I used to get gdb/gdbserver
running properly on the coldfire port.
You could try this and see if it helps. It definately helps when you do a
backtrace and gdb runs off the end of the stack and reads junk ;-)
> Another interesting problem. The "print" command doesn't print the
> correct values for my variables.
I had a similar problem on the coldfire, however because you guys are
using PIC/coff this advice may be way off track :-)
Basically gdb could not deal with an elf file that contained relocs.
The fix was to create an executable, non-relocatable, linked at
address 0, and run gdb on that. gdb gets the code/data/bss
addresses from gdbserver and relocates all the symbolic info to
If that fails, check the data/bss values coming back from gdbserver.
Hope this helps,
-- David McCullough: Ph: +61 7 3279 1822 Lineo (The Embedded Linux Company) email@example.com Fx: +61 7 3279 1820 PO Box 925, Kenmore QLD 4069, Australia
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