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#!/bin/sh
# Disassemble the Code: line in Linux oopses
# usage: decodecode < oops.file
#
# options: set env. variable AFLAGS=options to pass options to "as";
# e.g., to decode an i386 oops on an x86_64 system, use:
# AFLAGS=--32 decodecode < 386.oops
cleanup() {
rm -f $T $T.s $T.o
exit 1
}
die() {
echo "$@"
exit 1
}
trap cleanup EXIT
T=`mktemp` || die "cannot create temp file"
code=
while read i ; do
case "$i" in
*Code:*)
code=$i
;;
esac
done
if [ -z "$code" ]; then
rm $T
exit
fi
echo $code
code=`echo $code | sed -e 's/.*Code: //'`
marker=`expr index "$code" "\<"`
if [ $marker -eq 0 ]; then
marker=`expr index "$code" "\("`
fi
if [ $marker -ne 0 ]; then
beforemark=`echo "$code" | cut -c-$((${marker} - 1))`
echo -n " .byte 0x" > $T.s
echo $beforemark | sed -e 's/ /,0x/g' >> $T.s
as $AFLAGS -o $T.o $T.s
objdump -S $T.o
rm $T.o $T.s
# and fix code at-and-after marker
code=`echo "$code" | cut -c$((${marker} + 1))-`
fi
code=`echo $code | sed -e 's/ [<(]/ /;s/[>)] / /;s/ /,0x/g'`
echo -n " .byte 0x" > $T.s
echo $code >> $T.s
as $AFLAGS -o $T.o $T.s
objdump -S $T.o
rm $T $T.s $T.o
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