From: Martin Kepplinger <martink@posteo.de>
To: mingo@kernel.org, akpm@linux-foundation.org, linux@horizon.com,
linux@rasmusvillemoes.dk, maxime.coquelin@st.com,
dvlasenk@redhat.com, yury.norov@gmail.com,
torvalds@linux-foundation.org
Cc: linux-kernel@vger.kernel.org,
Martin Kepplinger <martink@posteo.de>,
Martin Kepplinger <martin.kepplinger@theobroma-systems.com>
Subject: [PATCH 3/5] arch: sh: use sign_extend64() for sign extension
Date: Fri, 16 Oct 2015 11:07:05 +0200 [thread overview]
Message-ID: <1444986427-12101-4-git-send-email-martink@posteo.de> (raw)
In-Reply-To: <1444986427-12101-1-git-send-email-martink@posteo.de>
Signed-off-by: Martin Kepplinger <martin.kepplinger@theobroma-systems.com>
---
arch/sh/kernel/traps_64.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/sh/kernel/traps_64.c b/arch/sh/kernel/traps_64.c
index 112ea11..d208c27 100644
--- a/arch/sh/kernel/traps_64.c
+++ b/arch/sh/kernel/traps_64.c
@@ -101,7 +101,7 @@ 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
next prev parent reply other threads:[~2015-10-16 9:12 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-10-16 9:07 [PATCH v2 0/5] improve sign extension API Martin Kepplinger
2015-10-16 9:07 ` [PATCH 1/5] bitops.h: Improve sign_extend32()'s documentation Martin Kepplinger
2015-10-16 9:07 ` [PATCH 2/5] bitops.h: add sign_extend64() Martin Kepplinger
2015-10-16 9:07 ` Martin Kepplinger [this message]
2015-10-16 9:07 ` [PATCH 4/5] arch: sh: use sign_extend64() for sign extension Martin Kepplinger
2015-10-16 21:25 ` George Spelvin
2015-10-16 9:07 ` [PATCH 5/5] arch: x86: " Martin Kepplinger
2015-10-16 21:30 ` George Spelvin
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