From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755578AbbBLLMX (ORCPT ); Thu, 12 Feb 2015 06:12:23 -0500 Received: from mx02.posteo.de ([89.146.194.165]:57788 "EHLO mx02.posteo.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754892AbbBLLMT (ORCPT ); Thu, 12 Feb 2015 06:12:19 -0500 From: Martin Kepplinger To: linux@roeck-us.net, mingo@kernel.org, hpa@zytor.com Cc: peterz@infradead.org, torvalds@linux-foundation.org, jsrhbz@kanargh.force9.co.uk, christoph.muellner@theobroma-systems.com, linux@rasmusvillemoes.dk, paulmck@linux.vnet.ibm.com, tglx@linutronix.de, akpm@linux-foundation.org, maxime.coquelin@st.com, linux-kernel@vger.kernel.org, tytso@mit.edu, linux-tip-commits@vger.kernel.org, Martin Kepplinger Subject: [RFC][PATCH] arch: sh: use sign_extend64() for sign extension Date: Thu, 12 Feb 2015 12:11:30 +0100 Message-Id: <1423739490-5187-2-git-send-email-martink@posteo.de> X-Mailer: git-send-email 2.1.4 In-Reply-To: <1423739490-5187-1-git-send-email-martink@posteo.de> References: <54D37A2F.1010906@roeck-us.net> <1423739490-5187-1-git-send-email-martink@posteo.de> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Signed-off-by: Martin Kepplinger --- arch/sh/kernel/traps_64.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/arch/sh/kernel/traps_64.c b/arch/sh/kernel/traps_64.c index 112ea11..4e04261 100644 --- a/arch/sh/kernel/traps_64.c +++ b/arch/sh/kernel/traps_64.c @@ -25,6 +25,7 @@ #include #include #include +#include #include #include #include @@ -101,7 +102,7 @@ static int generate_and_check_address(struct pt_regs *regs, if (displacement_not_indexed) { __s64 displacement; displacement = (opcode >> 10) & 0x3ff; - displacement = ((displacement << 54) >> 54); /* sign extend */ + displacement = sign_extend64(displacement, 9); addr = (__u64)((__s64)base_address + (displacement << width_shift)); } else { __u64 offset; -- 2.1.4