The patch titled
Subject: scripts/decodecode: add support for LoongArch
has been added to the -mm mm-nonmm-unstable branch. Its filename is
scripts-decodecode-add-support-for-loongarch.patch
This patch will shortly appear at
https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/scripts-decodecode-add-support-for-loongarch.patch
This patch will later appear in the mm-nonmm-unstable branch at
git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
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------------------------------------------------------
From: Youling Tang <youling.tang@xxxxxxxxxxx>
Subject: scripts/decodecode: add support for LoongArch
Date: Sat, 16 Dec 2023 14:51:28 +0800
An example how to invoke decodecode for loongarch64:
$ echo 'Code: 380839f6 380831f9 28412bae <24000ca6>
004081ad 0014cb50 004083e8 02bff34c 58008e91' | \
ARCH=loongarch CROSS_COMPILE=loongarch64-linux-gnu- \
./scripts/decodecode
Code: 380839f6 380831f9 28412bae <24000ca6> 004081ad 0014cb50 004083e8 02bff34c 58008e91
All code
========
0: 380839f6 ldx.w $fp, $t3, $t2
4: 380831f9 ldx.w $s2, $t3, $t0
8: 28412bae ld.h $t2, $s6, 74(0x4a)
c:* 24000ca6 ldptr.w $a2, $a1, 12(0xc) <-- trapping instruction
10: 004081ad slli.w $t1, $t1, 0x0
14: 0014cb50 and $t4, $s3, $t6
18: 004083e8 slli.w $a4, $s8, 0x0
1c: 02bff34c addi.w $t0, $s3, -4(0xffc)
20: 58008e91 beq $t8, $t5, 140(0x8c) # 0xac
Code starting with the faulting instruction
===========================================
0: 24000ca6 ldptr.w $a2, $a1, 12(0xc)
4: 004081ad slli.w $t1, $t1, 0x0
8: 0014cb50 and $t4, $s3, $t6
c: 004083e8 slli.w $a4, $s8, 0x0
10: 02bff34c addi.w $t0, $s3, -4(0xffc)
14: 58008e91 beq $t8, $t5, 140(0x8c) # 0xa0
Link: https://lkml.kernel.org/r/MW4PR84MB3145B99B9677BB7887BB26CD8192A@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
Signed-off-by: Youling Tang <tangyouling@xxxxxxxxxx>
Acked-by: Huacai Chen <chenhuacai@xxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
scripts/decodecode | 5 +++++
1 file changed, 5 insertions(+)
--- a/scripts/decodecode~scripts-decodecode-add-support-for-loongarch
+++ a/scripts/decodecode
@@ -67,6 +67,7 @@ if [ -z "$ARCH" ]; then
case `uname -m` in
aarch64*) ARCH=arm64 ;;
arm*) ARCH=arm ;;
+ loongarch*) ARCH=loongarch ;;
esac
fi
@@ -98,6 +99,10 @@ disas() {
${CROSS_COMPILE}strip $t.o
fi
+ if [ "$ARCH" = "loongarch" ]; then
+ ${CROSS_COMPILE}strip $t.o
+ fi
+
if [ $pc_sub -ne 0 ]; then
if [ $PC ]; then
adj_vma=$(( $PC - $pc_sub ))
_
Patches currently in -mm which might be from youling.tang@xxxxxxxxxxx are
scripts-decodecode-add-support-for-loongarch.patch
