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| author | Arjan van de Ven <arjan@linux.intel.com> | 2008-12-02 01:21:06 +0300 |
|---|---|---|
| committer | Sam Ravnborg <sam@ravnborg.org> | 2008-12-04 00:36:39 +0300 |
| commit | 846442c8ddc02e378e7b981f0928449ed1ff1e1f (patch) | |
| tree | 83702fac4a39ecc8182557e771ca96dab83f6a1f /scripts/decodecode | |
| parent | c39dd50240b97bfe4fcc49b41e1fe56675afcb94 (diff) | |
| download | linux-846442c8ddc02e378e7b981f0928449ed1ff1e1f.tar.xz | |
scripts: improve the decodecode script
kerneloops.org has been using an improved "decodecode" script,
specifically it has a special marker that shows which line in the assembly
the oops happened at, like this:
20: 83 e0 03 and $0x3,%eax
23: 09 d8 or %ebx,%eax
25: 85 db test %ebx,%ebx
27: 89 02 mov %eax,(%edx)
29: 74 0f je 0x3a
2b:* 3b 73 04 cmp 0x4(%ebx),%esi <-- trapping instruction
2e: 75 05 jne 0x35
30: 89 53 04 mov %edx,0x4(%ebx)
33: eb 07 jmp 0x3c
35: 89 53 08 mov %edx,0x8(%ebx)
this patch updates the kernel copy to also have this functionality.
Signed-off-by: Arjan van de Ven <arjan@linux.intel.com>
Reviewed-by: WANG Cong <wangcong@zeuux.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Diffstat (limited to 'scripts/decodecode')
| -rwxr-xr-x | scripts/decodecode | 32 |
1 files changed, 22 insertions, 10 deletions
diff --git a/scripts/decodecode b/scripts/decodecode index 235d3938529d..4b00647814bc 100755 --- a/scripts/decodecode +++ b/scripts/decodecode @@ -7,7 +7,7 @@ # AFLAGS=--32 decodecode < 386.oops cleanup() { - rm -f $T $T.s $T.o + rm -f $T $T.s $T.o $T.oo $T.aa $T.aaa exit 1 } @@ -44,21 +44,33 @@ if [ $marker -eq 0 ]; then marker=`expr index "$code" "\("` fi +touch $T.oo if [ $marker -ne 0 ]; then - beforemark=`echo "$code" | cut -c-$((${marker} - 1))` + echo All code >> $T.oo + echo ======== >> $T.oo + beforemark=`echo "$code"` 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 + echo $beforemark | sed -e 's/ /,0x/g' | sed -e 's/<//g' | sed -e 's/>//g' >> $T.s + as $AFLAGS -o $T.o $T.s &> /dev/null + objdump -S $T.o | grep -v "/tmp" | grep -v "Disassembly" | grep -v "\.text" | grep -v "^$" &> $T.ooo + cat $T.ooo >> $T.oo + rm -f $T.o $T.s $T.ooo # and fix code at-and-after marker code=`echo "$code" | cut -c$((${marker} + 1))-` fi - +echo Code starting with the faulting instruction > $T.aa +echo =========================================== >> $T.aa 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 +as $AFLAGS -o $T.o $T.s &> /dev/null +objdump -S $T.o | grep -v "Disassembly" | grep -v "/tmp" | grep -v "\.text" | grep -v "^$" &> $T.aaa +cat $T.aaa >> $T.aa + +faultline=`cat $T.aaa | head -1 | cut -d":" -f2` + +cat $T.oo | sed -e "s/\($faultline\)/\*\1 <-- trapping instruction/g" +echo +cat $T.aa +cleanup |