Date: Wed, 21 Oct 1998 13:55:03 +0100 (MET) From: Luigi Rizzo <luigi@labinfo.iet.unipi.it> To: dg@root.com Cc: hackers@FreeBSD.ORG Subject: Re: Handling page faults in user space ? Message-ID: <199810211255.NAA10177@labinfo.iet.unipi.it> In-Reply-To: <199810211427.HAA02579@implode.root.com> from "David Greenman" at Oct 21, 98 07:27:19 am
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> >signal handler, the fault virtual address and maybe IP associated to > >the faulting instruction. > > > >Ideas anyone ? > > Yes, that is supported. The fault VA is passed back via the sigcontext > struct, sc_err. A pointer to the sigcontext is passed into the signal > handler as the third arg. See the sigaction(2) man page. Thanks a lot, that was it! However the sigaction manpage (at least on 2.2.6) seems incomplete. It only specifies three args for the handler, whereas from looking at macine/frame.h i see "struct sigframe" with a number of arguments, and i found the fourth arg to the signal handler to be exactly the fault address... cheers luigi To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message
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