Re: cross debugging r3912 cpu with gdb

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On Sun, Dec 07, 2003 at 10:28:33PM +0000, Mark and Janice Juszczec wrote:
> 
> Hi folks
> 
> I'm trying to track down a SIGSEGV generated by kaffe on the Helio pda.  It 
> uses a  Phillips R3912 cpu.

You left out lots of details.  What operating system is the r3900
running?  From the list name, I assume it's Linux/MIPS.  So why did you
configure for mips-idt-ecoff?

If you're using gdbserver, then you want target=mips-linux and "target
remote", not "target mips".

> 
> The gdb 6.0 docs say configure as follows:  configure 
> --target=mips-idt-ecoff.  I did and mips shows up as an available target.
> 
> Unfortunately, when I try to connect to the pda via a USB serial 
> connection, I get:
> 
> (gdb) set debug remote 2
> (gdb) target mips /dev/ttyUSB0
> Expected "<IDT>", got "": FAIL
> Expected "<IDT>", got "": FAIL
> Expected "<IDT>", got "": FAIL
> Failed to initialize.
> Ending remote MIPS debugging.
> You can't do that without a process to debug
> 
> Further research shows there is supposed to be a target named r3900.  It 
> doesn't show up under my available targets and
> 
> (gdb) target r3900 /dev/ttyUSB0
> 
> gives and error saying there is no target named r3900.
> 
> Can anyone out there give me advice about gdb and mips cross debugging?
> 
> Mark
> 
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> 
> 
> 

-- 
Daniel Jacobowitz
MontaVista Software                         Debian GNU/Linux Developer


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