Date: Fri, 16 Nov 2007 22:17:37 +0000 (UTC) From: John Baldwin <jhb@FreeBSD.org> To: src-committers@FreeBSD.org, cvs-src@FreeBSD.org, cvs-all@FreeBSD.org Subject: cvs commit: src/gnu/usr.bin/gdb/kgdb kgdb.h kthr.c trgt_i386.c Message-ID: <200711162217.lAGMHbNd077328@repoman.freebsd.org>
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jhb 2007-11-16 22:17:37 UTC
FreeBSD src repository
Modified files:
gnu/usr.bin/gdb/kgdb kgdb.h kthr.c trgt_i386.c
Log:
Teach kgdb how to handle double fault frames on i386:
- Save td_oncpu in 'struct kthr' so the i386 target code can see which CPU
a thread is running on.
- Add a new frame unwinder for double fault frames. This unwinder is used
when "dblfault_handler" is encountered in the stack. It uses the CPU of
the current thread to lookup the base address of the TSS used for the
double fault from the GDT. It then fetches the various registers out
of the TSS similar to how the current trapframe unwinder fetches
registers out of the trapframe.
MFC after: 3 days
Revision Changes Path
1.6 +1 -0 src/gnu/usr.bin/gdb/kgdb/kgdb.h
1.8 +1 -0 src/gnu/usr.bin/gdb/kgdb/kthr.c
1.7 +152 -1 src/gnu/usr.bin/gdb/kgdb/trgt_i386.c
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