NetBSD/sys/gdbscripts/msgbuf

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# $NetBSD: msgbuf,v 1.4 2005/12/11 12:24:29 christos Exp $
#
# Copyright (c) 2000 The NetBSD Foundation, Inc.
# All rights reserved.
#
# This code is derived from software contributed to The NetBSD Foundation
# by John A. Hawkinson
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions
# are met:
# 1. Redistributions of source code must retain the above copyright
# notice, this list of conditions and the following disclaimer.
# 2. Redistributions in binary form must reproduce the above copyright
# notice, this list of conditions and the following disclaimer in the
# documentation and/or other materials provided with the distribution.
# 3. All advertising materials mentioning features or use of this software
# must display the following acknowledgement:
# This product includes software developed by the NetBSD
# Foundation, Inc. and its contributors.
# 4. Neither the name of The NetBSD Foundation nor the names of its
# contributors may be used to endorse or promote products derived
# from this software without specific prior written permission.
#
# THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
# ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
# TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
# PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
# BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
# CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
# SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
# INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
# CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
# ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
# POSSIBILITY OF SUCH DAMAGE.
#
define msgbuf
set $bufx=*(long*)((char *)msgbufp+1*sizeof(long))
set $bufr=*(long*)((char *)msgbufp+2*sizeof(long))
set $bufs=*(long*)((char *)msgbufp+3*sizeof(long))
printf "msgbufp %#x: bufx %d bufr %d bufs %d\n", msgbufp, $bufx, $bufr, $bufs
# Dump the unread section
# set $l = $bufx - $bufr
# if ($l < 0)
# set $l = $bufs - $bufr
# end
# set $p = (long)msgbufp+4*sizeof(long)+$bufr
# set print elements $l
# x/s $p
# Dump the whole thing
# Presume each section is null-terminated. Possibly bad presumption?
set $p = (long)msgbufp+4*sizeof(long)+$bufx
set $l = $bufs - $bufx
set print elements $l
printf "Dumping %#x length %d\n", $p, $l
# XXX (unsupported by gdb): printf "%.*s\n", $l, $p
printf "%s\n", $p
set $p = (long)msgbufp+4*sizeof(long)
set $l = $bufx
set print elements $l
printf "Dumping %#x length %d\n", $p, $l
# XXX (unsupported by gdb): printf "%.*s\n\n", $l, $p
printf "%s\n\n", $p
end
document msgbuf
Dump the kernel message buffer.
end