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From: Vic3Dexe <vic3dexe@gmail.com>
To: qemu-devel@nongnu.org
Subject: [Qemu-devel] [Bug 600589] [NEW] xchg r8,rax treated as nop
Date: Thu, 01 Jul 2010 12:04:34 -0000	[thread overview]
Message-ID: <20100701120434.6052.96178.malonedeb@potassium.ubuntu.com> (raw)
In-Reply-To: 20100701120434.6052.96178.malonedeb@potassium.ubuntu.com

Public bug reported:

xchg r8,rax (49h 90h) executed as nop (90h) in long mode, in other words
REX not used.

qemu 0.12.4, host Win 7 x64,  running qemu-system-x86_64.exe.

** Affects: qemu
     Importance: Undecided
         Status: New

-- 
xchg r8,rax treated as nop
https://bugs.launchpad.net/bugs/600589
You received this bug notification because you are a member of qemu-
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Status in QEMU: New

Bug description:
xchg r8,rax (49h 90h) executed as nop (90h) in long mode, in other words REX not used.

qemu 0.12.4, host Win 7 x64,  running qemu-system-x86_64.exe.

       reply	other threads:[~2010-07-01 12:10 UTC|newest]

Thread overview: 9+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2010-07-01 12:04 Vic3Dexe [this message]
2010-07-01 16:17 ` [Qemu-devel] [Bug 600589] [NEW] xchg r8,rax treated as nop Richard Henderson
2010-07-01 16:42   ` [Qemu-devel] [PATCH] target-i386: Fix xchg rax,r8 Richard Henderson
2010-07-01 21:52     ` Aurelien Jarno
2010-07-01 16:43   ` [Qemu-devel] [Bug 600589] [NEW] xchg r8,rax treated as nop malc
2010-07-02 19:13     ` vic3dexe
2010-07-02 20:08       ` Richard Henderson
2010-07-06 13:00 ` [Qemu-devel] [Bug 600589] " Jes Sorensen
2011-02-20 17:13 ` Aurelien Jarno

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