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cf02bf2407
debugging kernels and kernel modules much easier. It will automaticly locate kernel source, extract kernel module information, and rerun gdb to load kernel module symbol information (if available by compiling module w/ debuging symbols). I have not run these recently, so may need to be updated to work with gdb6. Feel free to fix as appropriate for -current.
66 lines
2.2 KiB
Bash
66 lines
2.2 KiB
Bash
#!/bin/sh -
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#
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# Copyright 2004 John-Mark Gurney
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# All rights reserved.
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#
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# Redistribution and use in source and binary forms, with or without
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# modification, are permitted provided that the following conditions
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# are met:
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# 1. Redistributions of source code must retain the above copyright
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# notice, this list of conditions and the following disclaimer.
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# 2. Redistributions in binary form must reproduce the above copyright
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# notice, this list of conditions and the following disclaimer in the
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# documentation and/or other materials provided with the distribution.
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#
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# THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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# ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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# SUCH DAMAGE.
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#
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# $FreeBSD$
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crashpath="/var/crash"
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kld_debpy="kld_deb.py"
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if [ x"$1" = x"-?" -o x"$1" = x"-h" ]; then
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echo "Usage: $0 <corenum> [ <gdbcmdfile> [ <modulepaths> ] ]"
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echo ""
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echo "Path for crash dumps: $crashpath"
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exit 1
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fi
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if [ x"$1" = x"" ]; then
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echo "Need core number."
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exit 1
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fi
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corenum="$1"
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shift
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cmd_file=""
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if [ x"$2" != x"" ]; then
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cmd_file="-x $2"
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shift
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fi
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core="$crashpath/vmcore.$corenum"
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info="$crashpath/info.$corenum"
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#Get the kernel source compile dir from the info file
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kernsrc="`awk 'i == 1 { split($0, a, ":"); print a[2]; i = 0 } $1 == "Versionstring:" { i = 1 }' < "$info"`"
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tmpfile="/tmp/kgdb.asf.$$"
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# -mapped (broken?)
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# -x command_file
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echo "Kernel Source: $kernsrc"
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echo "Getting KLD information and locations..."
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python $kld_debpy "$kernsrc" "$core" $@ > "$tmpfile" &&
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gdb $cmd_file -x "$tmpfile" -k -cd "$kernsrc" -s "$kernsrc/kernel.debug" -e "$kernsrc/kernel" -c "$core"
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rm "$tmpfile"
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