From: <christophe.lyon@st.com>
To: qemu-devel@nongnu.org
Subject: [Qemu-devel] [PATCH 3/6] target-arm: fix unsigned 64 bit right shifts.
Date: Fri, 11 Feb 2011 16:10:59 +0100 [thread overview]
Message-ID: <1297437062-6118-4-git-send-email-christophe.lyon@st.com> (raw)
In-Reply-To: <1297437062-6118-1-git-send-email-christophe.lyon@st.com>
From: Christophe Lyon <christophe.lyon@st.com>
Fix range of shift amounts which always give 0 as result.
Signed-off-by: Christophe Lyon <christophe.lyon@st.com>
---
target-arm/neon_helper.c | 2 +-
1 files changed, 1 insertions(+), 1 deletions(-)
diff --git a/target-arm/neon_helper.c b/target-arm/neon_helper.c
index 1ac362f..907f7b7 100644
--- a/target-arm/neon_helper.c
+++ b/target-arm/neon_helper.c
@@ -656,7 +656,7 @@ uint32_t HELPER(neon_rshl_u32)(uint32_t val, uint32_t shiftop)
uint64_t HELPER(neon_rshl_u64)(uint64_t val, uint64_t shiftop)
{
int8_t shift = (uint8_t)shiftop;
- if (shift >= 64 || shift < 64) {
+ if (shift >= 64 || shift < -64) {
val = 0;
} else if (shift == -64) {
/* Rounding a 1-bit result just preserves that bit. */
--
1.7.2.3
next prev parent reply other threads:[~2011-02-11 15:11 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-02-11 15:10 [Qemu-devel] [PATCH v3 0/6] target-arm: Fix Neon shift instructions christophe.lyon
2011-02-11 15:10 ` [Qemu-devel] [PATCH 1/6] target-arm: Fix rounding constant addition for " christophe.lyon
2011-02-14 18:12 ` Peter Maydell
2011-02-15 10:07 ` Christophe Lyon
2011-02-11 15:10 ` [Qemu-devel] [PATCH 2/6] target-arm: fix Neon right shifts with shift amount == input width christophe.lyon
2011-02-14 18:16 ` Peter Maydell
2011-02-15 13:47 ` Christophe Lyon
2011-02-11 15:10 ` christophe.lyon [this message]
2011-02-14 17:40 ` [Qemu-devel] [PATCH 3/6] target-arm: fix unsigned 64 bit right shifts Peter Maydell
2011-02-11 15:11 ` [Qemu-devel] [PATCH 4/6] target-arm: fix saturated values for Neon " christophe.lyon
2011-02-14 17:46 ` Peter Maydell
2011-02-14 17:49 ` Peter Maydell
2011-02-15 14:06 ` Christophe Lyon
2011-02-11 15:11 ` [Qemu-devel] [PATCH 5/6] target-arm: fix Neon VQSHRN and VSHRN christophe.lyon
2011-02-14 17:41 ` Peter Maydell
2011-02-11 15:11 ` [Qemu-devel] [PATCH 6/6] target-arm: fix decoding of Neon 64 bit shifts christophe.lyon
2011-02-14 17:53 ` Peter Maydell
2011-02-14 18:18 ` [Qemu-devel] [PATCH v3 0/6] target-arm: Fix Neon shift instructions Peter Maydell
2011-02-15 14:03 ` Christophe Lyon
2011-02-15 14:21 ` Peter Maydell
2011-02-15 14:49 ` Christophe Lyon
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