From 102a0743326a03cd1a1202ceda21e175b7d3575c Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Tue, 20 Feb 2024 01:20:52 +0000
Subject: [PATCH] add new system file
---
kernel/scripts/decodecode | 36 +++++++++++++++++++++++++++++-------
1 files changed, 29 insertions(+), 7 deletions(-)
diff --git a/kernel/scripts/decodecode b/kernel/scripts/decodecode
index eeaa435..31d884e 100755
--- a/kernel/scripts/decodecode
+++ b/kernel/scripts/decodecode
@@ -6,6 +6,7 @@
# 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
+# PC=hex - the PC (program counter) the oops points to
cleanup() {
rm -f $T $T.s $T.o $T.oo $T.aa $T.dis
@@ -60,15 +61,26 @@
4) type=4byte ;;
esac
+if [ -z "$ARCH" ]; then
+ case `uname -m` in
+ aarch64*) ARCH=arm64 ;;
+ arm*) ARCH=arm ;;
+ esac
+fi
+
+# Params: (tmp_file, pc_sub)
disas() {
- ${CROSS_COMPILE}as $AFLAGS -o $1.o $1.s > /dev/null 2>&1
+ t=$1
+ pc_sub=$2
+
+ ${CROSS_COMPILE}as $AFLAGS -o $t.o $t.s > /dev/null 2>&1
if [ "$ARCH" = "arm" ]; then
if [ $width -eq 2 ]; then
OBJDUMPFLAGS="-M force-thumb"
fi
- ${CROSS_COMPILE}strip $1.o
+ ${CROSS_COMPILE}strip $t.o
fi
if [ "$ARCH" = "arm64" ]; then
@@ -76,11 +88,18 @@
type=inst
fi
- ${CROSS_COMPILE}strip $1.o
+ ${CROSS_COMPILE}strip $t.o
fi
- ${CROSS_COMPILE}objdump $OBJDUMPFLAGS -S $1.o | \
- grep -v "/tmp\|Disassembly\|\.text\|^$" > $1.dis 2>&1
+ if [ $pc_sub -ne 0 ]; then
+ if [ $PC ]; then
+ adj_vma=$(( $PC - $pc_sub ))
+ OBJDUMPFLAGS="$OBJDUMPFLAGS --adjust-vma=$adj_vma"
+ fi
+ fi
+
+ ${CROSS_COMPILE}objdump $OBJDUMPFLAGS -S $t.o | \
+ grep -v "/tmp\|Disassembly\|\.text\|^$" > $t.dis 2>&1
}
marker=`expr index "$code" "\<"`
@@ -88,14 +107,17 @@
marker=`expr index "$code" "\("`
fi
+
touch $T.oo
if [ $marker -ne 0 ]; then
+ # 2 opcode bytes and a single space
+ pc_sub=$(( $marker / 3 ))
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
+ disas $T $pc_sub
cat $T.dis >> $T.oo
rm -f $T.o $T.s $T.dis
@@ -107,7 +129,7 @@
code=`echo $code | sed -e 's/ [<(]/ /;s/[>)] / /;s/ /,0x/g; s/[>)]$//'`
echo -n " .$type 0x" > $T.s
echo $code >> $T.s
-disas $T
+disas $T 0
cat $T.dis >> $T.aa
# (lines of whole $T.oo) - (lines of $T.aa, i.e. "Code starting") + 3,
--
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