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-rw-r--r--scripts/decodecode51
1 files changed, 51 insertions, 0 deletions
diff --git a/scripts/decodecode b/scripts/decodecode
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index 000000000000..1e1a8f620c47
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1#!/bin/sh
2# Disassemble the Code: line in Linux oopses
3# usage: decodecode < oops.file
4#
5# options: set env. variable AFLAGS=options to pass options to "as";
6# e.g., to decode an i386 oops on an x86_64 system, use:
7# AFLAGS=--32 decodecode < 386.oops
8
9T=`mktemp`
10code=
11
12while read i ; do
13
14case "$i" in
15*Code:*)
16 code=$i
17 ;;
18esac
19
20done
21
22if [ -z "$code" ]; then
23 exit
24fi
25
26echo $code
27code=`echo $code | sed -e 's/.*Code: //'`
28
29marker=`expr index "$code" "\<"`
30if [ $marker -eq 0 ]; then
31 marker=`expr index "$code" "\("`
32fi
33
34if [ $marker -ne 0 ]; then
35 beforemark=`echo "$code" | cut -c-$((${marker} - 1))`
36 echo -n " .byte 0x" > $T.s
37 echo $beforemark | sed -e 's/ /,0x/g' >> $T.s
38 as $AFLAGS -o $T.o $T.s
39 objdump -S $T.o
40 rm $T.o $T.s
41
42# and fix code at-and-after marker
43 code=`echo "$code" | cut -c$((${marker} + 1))-`
44fi
45
46code=`echo $code | sed -e 's/ [<(]/ /;s/[>)] / /;s/ /,0x/g'`
47echo -n " .byte 0x" > $T.s
48echo $code >> $T.s
49as $AFLAGS -o $T.o $T.s
50objdump -S $T.o
51rm $T.o $T.s