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-rwxr-xr-xscripts/decodecode48
1 files changed, 35 insertions, 13 deletions
diff --git a/scripts/decodecode b/scripts/decodecode
index 4b00647814bc..8b30cc36744f 100755
--- a/scripts/decodecode
+++ b/scripts/decodecode
@@ -7,7 +7,7 @@
7# AFLAGS=--32 decodecode < 386.oops 7# AFLAGS=--32 decodecode < 386.oops
8 8
9cleanup() { 9cleanup() {
10 rm -f $T $T.s $T.o $T.oo $T.aa $T.aaa 10 rm -f $T $T.s $T.o $T.oo $T.aa $T.dis
11 exit 1 11 exit 1
12} 12}
13 13
@@ -39,6 +39,29 @@ fi
39echo $code 39echo $code
40code=`echo $code | sed -e 's/.*Code: //'` 40code=`echo $code | sed -e 's/.*Code: //'`
41 41
42width=`expr index "$code" ' '`
43width=$[($width-1)/2]
44case $width in
451) type=byte ;;
462) type=2byte ;;
474) type=4byte ;;
48esac
49
50disas() {
51 ${CROSS_COMPILE}as $AFLAGS -o $1.o $1.s &> /dev/null
52
53 if [ "$ARCH" == "arm" ]; then
54 if [ $width == 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 $1.o | \
62 grep -v "/tmp\|Disassembly\|\.text\|^$" &> $1.dis
63}
64
42marker=`expr index "$code" "\<"` 65marker=`expr index "$code" "\<"`
43if [ $marker -eq 0 ]; then 66if [ $marker -eq 0 ]; then
44 marker=`expr index "$code" "\("` 67 marker=`expr index "$code" "\("`
@@ -49,26 +72,25 @@ if [ $marker -ne 0 ]; then
49 echo All code >> $T.oo 72 echo All code >> $T.oo
50 echo ======== >> $T.oo 73 echo ======== >> $T.oo
51 beforemark=`echo "$code"` 74 beforemark=`echo "$code"`
52 echo -n " .byte 0x" > $T.s 75 echo -n " .$type 0x" > $T.s
53 echo $beforemark | sed -e 's/ /,0x/g' | sed -e 's/<//g' | sed -e 's/>//g' >> $T.s 76 echo $beforemark | sed -e 's/ /,0x/g; s/[<>()]//g' >> $T.s
54 as $AFLAGS -o $T.o $T.s &> /dev/null 77 disas $T
55 objdump -S $T.o | grep -v "/tmp" | grep -v "Disassembly" | grep -v "\.text" | grep -v "^$" &> $T.ooo 78 cat $T.dis >> $T.oo
56 cat $T.ooo >> $T.oo 79 rm -f $T.o $T.s $T.dis
57 rm -f $T.o $T.s $T.ooo
58 80
59# and fix code at-and-after marker 81# and fix code at-and-after marker
60 code=`echo "$code" | cut -c$((${marker} + 1))-` 82 code=`echo "$code" | cut -c$((${marker} + 1))-`
61fi 83fi
62echo Code starting with the faulting instruction > $T.aa 84echo Code starting with the faulting instruction > $T.aa
63echo =========================================== >> $T.aa 85echo =========================================== >> $T.aa
64code=`echo $code | sed -e 's/ [<(]/ /;s/[>)] / /;s/ /,0x/g'` 86code=`echo $code | sed -e 's/ [<(]/ /;s/[>)] / /;s/ /,0x/g; s/[>)]$//'`
65echo -n " .byte 0x" > $T.s 87echo -n " .$type 0x" > $T.s
66echo $code >> $T.s 88echo $code >> $T.s
67as $AFLAGS -o $T.o $T.s &> /dev/null 89disas $T
68objdump -S $T.o | grep -v "Disassembly" | grep -v "/tmp" | grep -v "\.text" | grep -v "^$" &> $T.aaa 90cat $T.dis >> $T.aa
69cat $T.aaa >> $T.aa
70 91
71faultline=`cat $T.aaa | head -1 | cut -d":" -f2` 92faultline=`cat $T.dis | head -1 | cut -d":" -f2`
93faultline=`echo "$faultline" | sed -e 's/\[/\\\[/g; s/\]/\\\]/g'`
72 94
73cat $T.oo | sed -e "s/\($faultline\)/\*\1 <-- trapping instruction/g" 95cat $T.oo | sed -e "s/\($faultline\)/\*\1 <-- trapping instruction/g"
74echo 96echo