From: Janne Grunau <j@jannau.net>
To: qemu-devel@nongnu.org
Cc: "Peter Maydell" <peter.maydell@linaro.org>,
"Alex Bennée" <alex.bennee@linaro.org>
Subject: [Qemu-devel] [PATCH 1/1] linux-user: AArch64: Fix exclusive store of the zero register
Date: Tue, 18 Feb 2014 17:46:43 +0100 [thread overview]
Message-ID: <1392742003-7380-1-git-send-email-j@jannau.net> (raw)
Signed-off-by: Janne Grunau <j@jannau.net>
---
linux-user/main.c | 6 ++++--
1 file changed, 4 insertions(+), 2 deletions(-)
diff --git a/linux-user/main.c b/linux-user/main.c
index cabc9e1..9192977 100644
--- a/linux-user/main.c
+++ b/linux-user/main.c
@@ -953,7 +953,8 @@ static int do_strex_a64(CPUARMState *env)
goto finish;
}
}
- val = env->xregs[rt];
+ /* handle the zero register */
+ val = rt == 31 ? 0 : env->xregs[rt];
switch (size) {
case 0:
segv = put_user_u8(val, addr);
@@ -972,7 +973,8 @@ static int do_strex_a64(CPUARMState *env)
goto error;
}
if (is_pair) {
- val = env->xregs[rt2];
+ /* handle the zero register */
+ val = rt2 == 31 ? 0 : env->xregs[rt2];
if (size == 2) {
segv = put_user_u32(val, addr + 4);
} else {
--
1.8.5.5
next reply other threads:[~2014-02-18 16:46 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-02-18 16:46 Janne Grunau [this message]
2014-02-18 16:48 ` [Qemu-devel] [PATCH 1/1] linux-user: AArch64: Fix exclusive store of the zero register Peter Maydell
2014-02-18 17:26 ` Alex Bennée
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