Received-SPF: pass (google.com: domain of linux-kernel+bounces-2118-linux.lists.archive=gmail.com@vger.kernel.org designates 147.75.80.249 as permitted sender) client-ip=147.75.80.249;
From: Youling Tang <youling.tang@outlook.com>
To: Andrew Morton <akpm@linux-foundation.org>,
	Huacai Chen <chenhuacai@kernel.org>
Cc: linux-kernel@vger.kernel.org,
	Youling Tang <tangyouling@kylinos.cn>
Subject: [PATCH] scripts/decodecode: Add support for LoongArch
Date: Sat, 16 Dec 2023 14:51:28 +0800
Message-ID:
 <MW4PR84MB3145B99B9677BB7887BB26CD8192A@MW4PR84MB3145.NAMPRD84.PROD.OUTLOOK.COM>
Content-Transfer-Encoding: 8bit
Content-Type: text/plain
Precedence: bulk
MIME-Version: 1.0
X-MS-Exchange-MessageSentRepresentingType: 1
X-MS-PublicTrafficType: Email
X-MS-TrafficTypeDiagnostic: MW4PR84MB3145:EE_|CH3PR84MB3446:EE_
X-MS-Office365-Filtering-Correlation-Id: 64e095ec-338e-43bc-2adb-08dbfe045cde
X-Microsoft-Antispam: BCL:0;
X-Microsoft-Antispam-Message-Info:
	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
X-MS-Exchange-AntiSpam-MessageData-ChunkCount: 1
X-MS-Exchange-AntiSpam-MessageData-0:
	=?us-ascii?Q?jxpLDn+2q5z+LXcKeYjOSj8GSqe8LJ/BCWObEMkJIuzA5otML6NaJYnbHUG5?=
 =?us-ascii?Q?jT3kgIFJOhoMveqMwxpuK7nipKuyHLAf9WD/NnnN6yK4xIYArXitFcNDXwUP?=
 =?us-ascii?Q?3Pv/3ApuMAEoKtzuzJhAR4zeRAquBaAhH5IdcUajlvnP6JVXgkUYuRp6DfYE?=
 =?us-ascii?Q?taC1RylJ8K8bAelu8Bnjy8VgU4zouqG1WpBk4+Dl5NWdS4s6M6NJ7sa+GGmP?=
 =?us-ascii?Q?BTceIKu4bzRk2RcQUFSM5WkwkiiXmNpUU90oSyu3nLqdyz0BseCv7Q1Kwmjw?=
 =?us-ascii?Q?xDIUOyIvasosqJj3pfSHdLbvVI33UlsS/eM8MYPFT/Ng7S7dEg52eUCpYZF1?=
 =?us-ascii?Q?wu8h3VFdapTz/ax2F+qEkMwoZEMSPZqqkXAJyxOumPIzSUB8KXpfSr1olfym?=
 =?us-ascii?Q?R9hGjppXddzPtR09KsuvCUD9ZG6k9gsUj7kFYFMY057Xki0xCYVCYECYLh7N?=
 =?us-ascii?Q?kjAMhBusNNjrmelq/SJQ5ZAYT5LW25DQf9f+9RceK/pBfkQDwh16PpT4MNik?=
 =?us-ascii?Q?UOKL2Alb9LbLHHjBkjA2jC30MIiB3bVp2H5lvY3Npgek/W0r6s7L9CK2pk6G?=
 =?us-ascii?Q?gMvYmdXcoecKtuO7d/Q8x8BezqOnuVTf44CBXADCY7BjCZkn/EppjcfUxNJf?=
 =?us-ascii?Q?FYWHpgF1Y4PIYrc3DpCmnJ5ZPLhY/3byjc072qNMW5CaHUqE4d584U3I/S9C?=
 =?us-ascii?Q?k2oM0jjGRF/TqBq+y6ZCUP9u0JMvuSBkiuslYGxSAxefYsX1CrDXOGho484x?=
 =?us-ascii?Q?+F2e0s3LhuiUV5VdoalpN813CDotsDbHnKaclKEjL2nJeaJe8j+416P21bEf?=
 =?us-ascii?Q?At8z+1RIt0KkJg4UoHbQJBrR55+IXJmJoYULXzS8OA9oaOwvdQqPyQBdyZQz?=
 =?us-ascii?Q?bkr5WrxMUgrKJpgp4zSP+HPc7Zut8YEF+cNXi05WJsZnmgrNsFdhnFoR4xKx?=
 =?us-ascii?Q?nSA8qLb/5svzi6201Yfsqf4rvnMoXoWONsW5oT9J01E0udBzsVpVg0cNAMvl?=
 =?us-ascii?Q?9cr49Zb4MKTfAn7IOfnJMyrxAR/TBcYCe1L9YXMSCkpdLwUT4yI2zOeZYN9Z?=
 =?us-ascii?Q?+qEA2dPtiqM7sX4hPoc3xmwGTKx73dvZtUcmX4oXyczFFxuW8B58SIMqlAtK?=
 =?us-ascii?Q?8oCpp4ZopoirEiIj3CX7oNmHl7Nx3vZ5gDor7/JS0wJOrJenlfpToyuF9WQx?=
 =?us-ascii?Q?zifCEnAd+gglSHMSELXx75I0bsx3HmoX/M0jeGX1IKo+G1b7D3la3OrvgiE?=
 =?us-ascii?Q?=3D?=
X-OriginatorOrg: outlook.com
X-MS-Exchange-CrossTenant-Network-Message-Id: 64e095ec-338e-43bc-2adb-08dbfe045cde
X-MS-Exchange-CrossTenant-AuthSource: MW4PR84MB3145.NAMPRD84.PROD.OUTLOOK.COM
X-MS-Exchange-CrossTenant-AuthAs: Internal
X-MS-Exchange-CrossTenant-OriginalArrivalTime: 16 Dec 2023 06:58:09.8761
 (UTC)
X-MS-Exchange-CrossTenant-FromEntityHeader: Hosted
X-MS-Exchange-CrossTenant-Id: 84df9e7f-e9f6-40af-b435-aaaaaaaaaaaa
X-MS-Exchange-CrossTenant-RMS-PersistedConsumerOrg:
	00000000-0000-0000-0000-000000000000
X-MS-Exchange-Transport-CrossTenantHeadersStamped: CH3PR84MB3446

From: Youling Tang <tangyouling@kylinos.cn>

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

Signed-off-by: Youling Tang <tangyouling@kylinos.cn>
---
 scripts/decodecode | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/scripts/decodecode b/scripts/decodecode
index 8fe71c292381..6364218b2178 100755
--- a/scripts/decodecode
+++ b/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 ))
-- 
2.40.0