From: Avi Kivity <avi@redhat.com>
To: Gleb Natapov <gleb@redhat.com>
Cc: mtosatti@redhat.com, kvm@vger.kernel.org
Subject: Re: [PATCH] add "xchg ax, reg" emulator test
Date: Tue, 16 Mar 2010 14:56:28 +0200 [thread overview]
Message-ID: <4B9F7FFC.8090704@redhat.com> (raw)
In-Reply-To: <20100316125248.GE1365@redhat.com>
On 03/16/2010 02:52 PM, Gleb Natapov wrote:
>>> + MK_INSN(xchg_test1, "xchg %eax,%eax\n\t");
>>>
>> AKA 'nop'.
>>
>>
> Yep, but we still emulate it.
>
>
And well too.
Note that 'xchg eax, ebx' will clear the top 32-bits of rax and rbx, but
'xchg eax, eax' will not.
--
error compiling committee.c: too many arguments to function
next prev parent reply other threads:[~2010-03-16 12:56 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-03-16 12:42 [PATCH] add "xchg ax, reg" emulator test Gleb Natapov
2010-03-16 12:50 ` Avi Kivity
2010-03-16 12:52 ` Gleb Natapov
2010-03-16 12:56 ` Avi Kivity [this message]
2010-03-17 19:10 ` Marcelo Tosatti
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