andreas> Program received signal SIGSEGV, Segmentation fault.
andreas> 0x000519ec in interface_jtag_add_dr_out (device_num=0,
num_fields=0, num_bits=0x2, value=0xf1040, end_state=TAP_RTI) at jtag.c:721
andreas> 721 (*last_cmd)->cmd.scan->ir_scan = 0;
Hmm - Some ideas
1) As rick asks - what SVN version of OpenOCD are you using?
Look at the file: "jtag.c" - function: "cmd_queue_allocate()' is there
a *BIG*WARNING* comment that talks about alignment?
2) Can you run openocd under gdb on your uCLinux box?
3) Can you do this again (with newer SVN version) - line numbers do not
match well.
Then - get a disassembly dump of the relevent section of the code.
There are 3 different pointers going on there., (a) (*last_cmd), (b) the
-> part, and (c) the value of ".scan"
By looking at the disassembly - and the address (ie: above it iwas
0x000519ec) one can figure out what pointer is bad
4) you can perhaps configure uClinux to save a core file - and look at
the register value @ the time of the crash
(other version of uCLinux - have a kernel config to dump/print the cpu
registers when the above happens)
It would be helpful to determine what they where.
5) A bunch of simplistic "printf()" statements at that point in the code
would be very helpful.
for example:
printf( "LAST CMD = %p\n", last_cmd );
printf(" last command pointer = %p\n", last_command_ptr );
.... and all the other ones.
For example - print the return values of the "cmd_queue_allocate()"
calls.
andreas> So I did an strace with the same configuration. In fact ioctl
calls are failing.
That might be perfectly valid.
> After taking a deeper look to the code I found that "fopen" calls for
> the configuration files like this fail:
With out detail and context, it is hard to say what is happening here -
it most likely is 100% NORMAL.
Example: When GCC is hunting for .H files you are #including, there are
multiple fails.
-- Duane.
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