cvs commit: src/sys/amd64/amd64 db_trace.c exception.S
jhb at freebsd.org
Thu Nov 15 14:52:03 PST 2007
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
> >> 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
> > trace across a double fault just fine w/o any further patches if the
> > has this fix.
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.
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