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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 | |
9 | cleanup() { |
10 | rm -f $T $T.s $T.o $T.oo $T.aa $T.dis |
11 | exit 1 |
12 | } |
13 | |
14 | die() { |
15 | echo "$@" |
16 | exit 1 |
17 | } |
18 | |
19 | trap cleanup EXIT |
20 | |
21 | T=`mktemp` || die "cannot create temp file" |
22 | code= |
23 | |
24 | while read i ; do |
25 | |
26 | case "$i" in |
27 | *Code:*) |
28 | code=$i |
29 | ;; |
30 | esac |
31 | |
32 | done |
33 | |
34 | if [ -z "$code" ]; then |
35 | rm $T |
36 | exit |
37 | fi |
38 | |
39 | echo $code |
40 | code=`echo $code | sed -e 's/.*Code: //'` |
41 | |
42 | width=`expr index "$code" ' '` |
43 | width=$((($width-1)/2)) |
44 | case $width in |
45 | 1) type=byte ;; |
46 | 2) type=2byte ;; |
47 | 4) type=4byte ;; |
48 | esac |
49 | |
50 | disas() { |
51 | ${CROSS_COMPILE}as $AFLAGS -o $1.o $1.s > /dev/null 2>&1 |
52 | |
53 | if [ "$ARCH" = "arm" ]; then |
54 | if [ $width -eq 2 ]; then |
55 | OBJDUMPFLAGS="-M force-thumb" |
56 | fi |
57 | |
58 | ${CROSS_COMPILE}strip $1.o |
59 | fi |
60 | |
61 | ${CROSS_COMPILE}objdump $OBJDUMPFLAGS -S $1.o | \ |
62 | grep -v "/tmp\|Disassembly\|\.text\|^$" > $1.dis 2>&1 |
63 | } |
64 | |
65 | marker=`expr index "$code" "\<"` |
66 | if [ $marker -eq 0 ]; then |
67 | marker=`expr index "$code" "\("` |
68 | fi |
69 | |
70 | touch $T.oo |
71 | if [ $marker -ne 0 ]; then |
72 | echo All code >> $T.oo |
73 | echo ======== >> $T.oo |
74 | beforemark=`echo "$code"` |
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 $T.dis |
80 | |
81 | # and fix code at-and-after marker |
82 | code=`echo "$code" | cut -c$((${marker} + 1))-` |
83 | fi |
84 | echo Code starting with the faulting instruction > $T.aa |
85 | echo =========================================== >> $T.aa |
86 | code=`echo $code | sed -e 's/ [<(]/ /;s/[>)] / /;s/ /,0x/g; s/[>)]$//'` |
87 | echo -n " .$type 0x" > $T.s |
88 | echo $code >> $T.s |
89 | disas $T |
90 | cat $T.dis >> $T.aa |
91 | |
92 | faultline=`cat $T.dis | head -1 | cut -d":" -f2` |
93 | faultline=`echo "$faultline" | sed -e 's/\[/\\\[/g; s/\]/\\\]/g'` |
94 | |
95 | cat $T.oo | sed -e "s/\($faultline\)/\*\1 <-- trapping instruction/g" |
96 | echo |
97 | cat $T.aa |
98 | cleanup |
99 |
Branches:
ben-wpan
ben-wpan-stefan
javiroman/ks7010
jz-2.6.34
jz-2.6.34-rc5
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master
Tags:
od-2011-09-04
od-2011-09-18
v2.6.34-rc5
v2.6.34-rc6
v2.6.34-rc7
v3.9