Date: Wed, 23 Dec 1998 13:32:50 +0800 From: Peter Wemm <peter@netplex.com.au> To: Greg Lehey <grog@lemis.com> Cc: Bruce Evans <bde@zeta.org.au>, jonny@jonny.eng.br, cvs-all@FreeBSD.ORG, cvs-committers@FreeBSD.ORG Subject: Re: Use of LKMs (was: cvs commit: src/share/mk bsd.kern.mk src/sys/alpha/conf Makefile.alpha) Message-ID: <199812230532.NAA39231@spinner.netplex.com.au> In-Reply-To: Your message of "Sun, 20 Dec 1998 10:17:13 %2B1030." <19981220101713.O24125@freebie.lemis.com>
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Greg Lehey wrote:
> On Saturday, 19 December 1998 at 23:27:39 +1100, Bruce Evans wrote:
> >> #define quoting(Bruce Evans)
> >> // src/lkm -> src/sys/lkm (like src/sys/modules)
> >>
> >> Is there a reason to keep the lkm's, now that kld's are working ?
> >> (Aren't they ?)
> >
> > They might still be being used.
>
> [Somehow I missed the original of this]
>
> What's the current situation for kld debugging? I'm using Vinum as an
> lkm because I can debug it that way.
It works just fine, with one exception.. With LKM's you use a fixed
offset to skip the header - 0x20 from memory. With KLD's you have to get
that from the header:
# objdump --headers /modules/vinum.ko | more
Idx Name Size VMA LMA File off Algn
[..]
6 .text 0000915c 000051e4 000051e4 000051e4 2**2
CONTENTS, ALLOC, LOAD, READONLY, CODE
In this case, it would be 0x51e4 as the symbol offset rather than 0x20.
Scriptifying that could be fun though.. :-/
Cheers,
-Peter
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