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- Path: news.infinet.com!usenet
- From: Paul Swetnam <pswetnam@infinet.com>
- Newsgroups: comp.sys.m68k
- Subject: Re: Bus Error Handler for 68040
- Date: Thu, 01 Feb 1996 09:29:52 -0800
- Organization: Aeroflex Lintek Corp.
- Message-ID: <3110F890.451D@infinet.com>
- References: <30FFE81F.4110@infinet.com> <9601271055.AA000wq@harden.demon.co.uk>
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-
- Mark Harden wrote:
- >
- > Paul Swetnam (pswetnam@infinet.com) wrote:
- > : I am having difficulty writing a bus error handler for a 68040 processor
-
- > As far as I remember you have to "tidy up" before the RTE. The stack
- > frame contains incomplete writes and all sorts of things. I would
- > suggest you look at the NetBSD source code. There is a bus error
- > handler there.
- >
- > Let me know if you need more. I could send you the required module ?
-
- We are already perfoming the write-backs to "tidy up" after a bus error.
- These write-backs did solve some other nasty problems (such as corrupted
- call stacks) which were caused by VME bus error excetions. However,
- performing write-backs does not solve all of our problems. The
- instruction which caused the bus error is still sometimes re-run
- following the RTE.
-
- The NetBSD source code sounds interesting. Where can I find it?
-
- Will Koehler
- Design Engineer
- Aeroflex Lintek Corp.
-
-
-