Re: New debug kernel installation mechanism committed to HEAD
You can do it with asf(8) easier.
/\ Hidetoshi Shimokawa
\/ simokawa@freebsd.org
At Thu, 21 Oct 2004 04:45:25 -0400,
Andrew Atrens wrote:
>
> Richard Nyberg wrote:
> > I do this on a regular basis:
> > gdb -k kernel.debug vmcore.9
> >
> > follow this chain to get the address of my module
> > *linker_files.tqh_first.link.tqe_next.link.tqe_next
> >
> > objdump --headers /usr/arla/bin/nnpfs.ko | grep text
> > to see the relocation address.
> >
> > add address and relocation address
> >
> > add-symbol-file /usr/arla/bin/nnpfs.ko sum-of-addresses
> >
> > bt
>
> Yes, looks like this works, cool! :)
>
> (kgdb) print
> *linker_files.tqh_first.link.tqe_next.link.tqe_next.link.tqe_next
> $4 = {refs = 1, userrefs = 1, flags = 1, link = {tqe_next = 0xc272b148,
> tqe_prev = 0xcc38641c}, filename = 0xcc38613c "fade_saver.ko", id = 5,
> address = 0xd59ef000 "\177ELF\001\001\001\t", size = 8192, ndeps = 1,
> deps = 0xc2644368, common = {stqh_first = 0x0, stqh_last = 0xcc386124},
> modules = {tqh_first = 0xc26200f0, tqh_last = 0xc26200f8}, priv =
> 0xcc366ac0,
> ops = 0xc046d16c}
> (kgdb) print
> *linker_files.tqh_first.link.tqe_next.link.tqe_next.link.tqe_next.link.tqe_next
> $5 = {refs = 1, userrefs = 1, flags = 1, link = {tqe_next = 0xc272b198,
> tqe_prev = 0xcc386104}, filename = 0xc272b18c "ndis.ko", id = 6,
> address = 0xd5a6e000 "\177ELF\001\001\001\t", size = 57344, ndeps = 1,
> deps = 0xc26444c8, common = {stqh_first = 0x0, stqh_last = 0xc272b174},
> modules = {tqh_first = 0xc2623298, tqh_last = 0xc26232a0}, priv =
> 0xcc366d30,
> ops = 0xc046d16c}
> (kgdb) print
> *linker_files.tqh_first.link.tqe_next.link.tqe_next.link.tqe_next.link.tqe_next.link.tqe_next
> $6 = {refs = 1, userrefs = 1, flags = 1, link = {tqe_next = 0x0,
> tqe_prev = 0xc272b154}, filename = 0xc272b1dc "if_ndis.ko", id = 7,
> address = 0xd5af0000 "\177ELF\001\001\001\t", size = 360448, ndeps = 1,
> deps = 0xc26444d0, common = {stqh_first = 0x0, stqh_last = 0xc272b1c4},
> modules = {tqh_first = 0xc26232d0, tqh_last = 0xc2705548}, priv =
> 0xcc366d98,
> ops = 0xc046d16c}
>
> List looks to be NULL terminated (link.tqe_next == 0x0)
>
> and -
>
> -- root@atrens: /usr/src/sys/compile/ATRENS (04:30) --
> # objdump --headers /if_ndis.ko | egrep 'text|Idx'
> Idx Name Size VMA LMA File off Algn
> 4 .text 00003a76 00002840 00002840 00002840 2**4
>
>
> Andrew.
>
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