Hello,
This patch keeps running Xen when you quit from gdb. When
you debug Xen and dom0 by gdb in host-target configuration, you can interrupt
Xen by ^A^A^A%, then you can examine/set breakpoint/etc Xen by gdb. By this
patch, you can also interrupt Xen on “target remote” command. In
near future, gdb is going to integrate my patch, http://sourceware.org/ml/gdb-patches/2009-10/msg00038.html
and have a new command, “set/show remote interrupt-on-connect”. When
interrupt-on-connect is ON, gdb sends Ctrl-C to target on “target remote”
command. As you see in the screen shots in http://www.caztech.com/xen/ScreenShot-20091007/,
you can continue running Xen by both of continue command and quit gdb. In the
screen shots, I use ssplitd to split the console messages and gdb interaction.
Patched gdb-7.0 is available in
http://kgdb-light.svn.sourceforge.net/viewvc/kgdb-light/branches/gdb-7.0-interrupt_sequence/
Corresponding .gdbinit is
set prompt (xgdb)
add-symbol-file
../JeremyDom0/vmlinux 0
set remote
interrupt-sequence Ctrl-C
set remote
interrupt-on-connect on
set remotebaud
115200
target remote 127.0.0.1:4000
Note: you don’t need to set interrupt-sequence.
Ctrl-C is a default.
Corresponding menu.lst is
title
xen-3.5-unstable.gz with kernel 2.6.31.1
root (hd0,0)
kernel /xen-3.5-unstable.gz console=com1L,vga com1=115200,8n1 gdb=com1H
module /vmlinuz-2.6.31.1 ro root=/dev/mapper/vg_tragi-lv_root rhgb
module /initrd-2.6.31.1.img
Let me know if you have any question.
Thank you.
-Caz Yokoyama, caz at caztech dot com. 503-804-1028(m).
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