Re: [microblaze-uclinux] dbtrap question

[John Williams <jwilliams@xxxxxxxxxxxxxx>]

Hi Bret,

Bret Ketchum wrote:
> 	Anybody know why I would see my microblaze uClinux kernel wind up in
> an endless loop inside dbtrap?

I need a bit more info to answer this one.  Are you on recent kernel and
tools (please say yes!)

What are you doing that winds up inside this dbtrap loop?

Can you explain what you mean by "endless loop inside dbtrap"?

dbtrap (vectored via address 0x60) is for userspace debugging support.
the soft breakpoint instruction is brki r14, 0x60.  This is inserted by
the debugger, which then traps to dbtrap - dbtrap merrely send the
current process a SIG_TRAP signal, which is then handled by gdbserver.

Regards,

John
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