btrfs: add missing unlocks to transaction abort paths
[linux-2.6-block.git] / scripts / decodecode
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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
fa220d89 9cleanup() {
5358db0b 10 rm -f $T $T.s $T.o $T.oo $T.aa $T.dis
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11 exit 1
12}
13
14die() {
15 echo "$@"
16 exit 1
17}
18
19trap cleanup EXIT
20
21T=`mktemp` || die "cannot create temp file"
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22code=
23
24while read i ; do
25
26case "$i" in
27*Code:*)
28 code=$i
29 ;;
30esac
31
32done
33
34if [ -z "$code" ]; then
fa220d89 35 rm $T
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36 exit
37fi
38
39echo $code
40code=`echo $code | sed -e 's/.*Code: //'`
41
5358db0b 42width=`expr index "$code" ' '`
b396aa03 43width=$((($width-1)/2))
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44case $width in
451) type=byte ;;
462) type=2byte ;;
474) type=4byte ;;
48esac
49
50disas() {
b396aa03 51 ${CROSS_COMPILE}as $AFLAGS -o $1.o $1.s > /dev/null 2>&1
5358db0b 52
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53 if [ "$ARCH" = "arm" ]; then
54 if [ $width -eq 2 ]; then
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55 OBJDUMPFLAGS="-M force-thumb"
56 fi
57
58 ${CROSS_COMPILE}strip $1.o
59 fi
60
61 ${CROSS_COMPILE}objdump $OBJDUMPFLAGS -S $1.o | \
b396aa03 62 grep -v "/tmp\|Disassembly\|\.text\|^$" > $1.dis 2>&1
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63}
64
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65marker=`expr index "$code" "\<"`
66if [ $marker -eq 0 ]; then
67 marker=`expr index "$code" "\("`
68fi
69
846442c8 70touch $T.oo
dcecc6c7 71if [ $marker -ne 0 ]; then
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72 echo All code >> $T.oo
73 echo ======== >> $T.oo
74 beforemark=`echo "$code"`
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75 echo -n " .$type 0x" > $T.s
76 echo $beforemark | sed -e 's/ /,0x/g; s/[<>()]//g' >> $T.s
77 disas $T
78 cat $T.dis >> $T.oo
79 rm -f $T.o $T.s $T.dis
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80
81# and fix code at-and-after marker
82 code=`echo "$code" | cut -c$((${marker} + 1))-`
83fi
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84echo Code starting with the faulting instruction > $T.aa
85echo =========================================== >> $T.aa
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86code=`echo $code | sed -e 's/ [<(]/ /;s/[>)] / /;s/ /,0x/g; s/[>)]$//'`
87echo -n " .$type 0x" > $T.s
dcecc6c7 88echo $code >> $T.s
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89disas $T
90cat $T.dis >> $T.aa
846442c8 91
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92faultline=`cat $T.dis | head -1 | cut -d":" -f2`
93faultline=`echo "$faultline" | sed -e 's/\[/\\\[/g; s/\]/\\\]/g'`
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94
95cat $T.oo | sed -e "s/\($faultline\)/\*\1 <-- trapping instruction/g"
96echo
97cat $T.aa
98cleanup