Date: 07 May 2001 03:55:45 +0200 From: Dag-Erling Smorgrav <des@ofug.org> To: Rohit Rakshe <rakshe@cs.umn.edu> Cc: <freebsd-hackers@FreeBSD.ORG> Subject: Re: FPU exception, kernel panic Message-ID: <xzpitjdzzvi.fsf@flood.ping.uio.no> In-Reply-To: <Pine.GSO.4.31.0105051400070.16637-100000@mercury.cs.umn.edu> References: <Pine.GSO.4.31.0105051400070.16637-100000@mercury.cs.umn.edu>
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Rohit Rakshe <rakshe@cs.umn.edu> writes: > 1. The code which I added in kernel does not use any floats. So I am > wondering why this problem should happen at all. The kernel uses the FPU to optimize certain bcopy- or bzero-like operations. > 2. pc register in FPU should give address of the instruction which caused > this exception, right ? Possibly. I'm not very familiar with the FPU. > 3. If yes, how do I translate this 48 bit address in a linear address > which gdb can understand ? You don't. FreeBSD uses a flat address space, you can disregard the segment descriptor. DES -- Dag-Erling Smorgrav - des@ofug.org To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message
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