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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 cleanup() { rm -f $T $T.s $T.o $T.oo $T.aa $T.dis exit 1 } die() { echo "$@" exit 1 } trap cleanup EXIT T=`mktemp` || die "cannot create temp file" code= while read i ; do case "$i" in *Code:*) code=$i ;; esac done if [ -z "$code" ]; then rm $T exit fi echo $code code=`echo $code | sed -e 's/.*Code: //'` width=`expr index "$code" ' '` width=$((($width-1)/2)) case $width in 1) type=byte ;; 2) type=2byte ;; 4) type=4byte ;; esac disas() { ${CROSS_COMPILE}as $AFLAGS -o $1.o $1.s > /dev/null 2>&1 if [ "$ARCH" = "arm" ]; then if [ $width -eq 2 ]; then OBJDUMPFLAGS="-M force-thumb" fi ${CROSS_COMPILE}strip $1.o fi ${CROSS_COMPILE}objdump $OBJDUMPFLAGS -S $1.o | \ grep -v "/tmp\|Disassembly\|\.text\|^$" > $1.dis 2>&1 } marker=`expr index "$code" "\<"` if [ $marker -eq 0 ]; then marker=`expr index "$code" "\("` fi touch $T.oo if [ $marker -ne 0 ]; then echo All code >> $T.oo echo ======== >> $T.oo beforemark=`echo "$code"` echo -n " .$type 0x" > $T.s echo $beforemark | sed -e 's/ /,0x/g; s/[<>()]//g' >> $T.s disas $T cat $T.dis >> $T.oo rm -f $T.o $T.s $T.dis # and fix code at-and-after marker code=`echo "$code" | cut -c$((${marker} + 1))-` fi echo Code starting with the faulting instruction > $T.aa echo =========================================== >> $T.aa code=`echo $code | sed -e 's/ [<(]/ /;s/[>)] / /;s/ /,0x/g; s/[>)]$//'` echo -n " .$type 0x" > $T.s echo $code >> $T.s disas $T cat $T.dis >> $T.aa # (lines of whole $T.oo) - (lines of $T.aa, i.e. "Code starting") + 3, # i.e. the title + the "===..=" line (sed is counting from 1, 0 address is # special) faultlinenum=$(( $(wc -l $T.oo | cut -d" " -f1) - \ $(wc -l $T.aa | cut -d" " -f1) + 3)) faultline=`cat $T.dis | head -1 | cut -d":" -f2-` faultline=`echo "$faultline" | sed -e 's/\[/\\\[/g; s/\]/\\\]/g'` cat $T.oo | sed -e "${faultlinenum}s/^\(.*:\)\(.*\)/\1\*\2\t\t<-- trapping instruction/" echo cat $T.aa cleanup .git/log/include/math-emu/soft-fp.h'>
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