Date: Thu, 15 Nov 2007 17:50:26 -0500 From: John Baldwin <jhb@freebsd.org> To: Kris Kennaway <kris@freebsd.org> Cc: cvs-src@freebsd.org, src-committers@freebsd.org, cvs-all@freebsd.org Subject: Re: cvs commit: src/sys/amd64/amd64 db_trace.c exception.S machdep.c trap.c Message-ID: <200711151750.27613.jhb@freebsd.org> In-Reply-To: <473CC907.3070007@FreeBSD.org> References: <200711152200.lAFM0xCF018460@repoman.freebsd.org> <200711151708.23974.jhb@freebsd.org> <473CC907.3070007@FreeBSD.org>
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On Thursday 15 November 2007 05:32:39 pm Kris Kennaway wrote: > John Baldwin wrote: > > On Thursday 15 November 2007 05:00:57 pm John Baldwin wrote: > >> jhb 2007-11-15 22:00:57 UTC > >> > >> FreeBSD src repository > >> > >> Modified files: > >> sys/amd64/amd64 db_trace.c exception.S machdep.c trap.c > >> Log: > >> Add support for cross double fault frames in stack traces: > >> - Populate the register values for the trapframe put on the stack by the > >> double fault handler. > >> - Teach DDB's trace routine to treat a double fault like other trap > > frames. > >> > >> MFC after: 3 days > > > > As an aside, because amd64 uses much saner stack frames than i386, kgdb will > > trace across a double fault just fine w/o any further patches if the kernel > > has this fix. > > > > Nice. I'm working on fixing kgdb on i386 to cross double faults as well. It's a good bit nastier as I have to do evil things to find the tss for the CPU and read the registers out of that, but I hope to test it tomorrow. -- John Baldwin
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