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Randy Dunlap dcecc6c700 doc/oops-tracing: add Code: decode info

Add info that the Code: bytes line contains <xy> or (wxyz) in some
architecture oops reports and what that means.

Add a script by Andi Kleen that reads the Code: line from an Oops report
file and generates assembly code from the hex bytes.

Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com>
Cc: Andi Kleen <ak@suse.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

2007-07-16 09:05:48 -07:00

984 B

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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

T=mktemp code=

while read i ; do

case "$i" in Code:) code=$i ;; esac

done

if [ -z "$code" ]; then 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))-`

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.o $T.s

984 B Raw Blame History