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authorRandy Dunlap <randy.dunlap@oracle.com>2007-07-15 23:41:15 -0700
committerLinus Torvalds <torvalds@woody.linux-foundation.org>2007-07-16 09:05:48 -0700
commitdcecc6c70013e3a5fa81b3081480c03e10670a23 (patch)
treea45c6a35538004732ea4ce130f9fa5db5f8a1bf6 /scripts/decodecode
parentnamespace: ensure clone_flags are always stored in an unsigned long (diff)
downloadlinux-dev-dcecc6c70013e3a5fa81b3081480c03e10670a23.tar.xz
linux-dev-dcecc6c70013e3a5fa81b3081480c03e10670a23.zip
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>
Diffstat (limited to '')
-rw-r--r--scripts/decodecode51
1 files changed, 51 insertions, 0 deletions
diff --git a/scripts/decodecode b/scripts/decodecode
new file mode 100644
index 000000000000..1e1a8f620c47
--- /dev/null
+++ b/scripts/decodecode
@@ -0,0 +1,51 @@
+#!/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))-`
+fi
+
+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