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From: Avi Kivity <avi@qumranet.com>
To: "Paweł Sikora" <pluto@agmk.net>
Cc: linux-kernel@vger.kernel.org, caglar@pardus.org.tr,
	kvm-devel@lists.sourceforge.net
Subject: Re: [PATCH] KVM: 'asm' operand has impossible constraints
Date: Sun, 28 Jan 2007 11:41:48 +0200	[thread overview]
Message-ID: <45BC6FDC.5050208@qumranet.com> (raw)
In-Reply-To: <200701271736.30271.pluto@agmk.net>

Paweł Sikora wrote:
> On Saturday 27 of January 2007 10:05:53 Avi Kivity wrote:
>
>   
>> "g" appears to be equivalent to "rmi", if "i" is impossible, gcc is free
>> to use "r" or "m", no?
>>     
>
> `r'
>      A register operand is allowed provided that it is in a general
>      register.
> `g'
>      Any register, memory or immediate integer operand is allowed,
>      except for registers that are not general registers.
>
> so, it looks like g == !r for registers ( not general vs. general regs ).
>   

I read it as g == !!r for registers ("except" and "not" constitute a 
double negative).


-- 
error compiling committee.c: too many arguments to function


  reply	other threads:[~2007-01-28  9:41 UTC|newest]

Thread overview: 8+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2007-01-25 23:40 S.Çağlar Onur
2007-01-27  9:05 ` Avi Kivity
2007-01-27 16:36   ` Paweł Sikora
2007-01-28  9:41     ` Avi Kivity [this message]
2007-01-27 21:28   ` S.Çağlar Onur
2007-01-27 21:46     ` D. Hazelton
2007-01-28  7:55     ` H. Peter Anvin
2007-01-28  9:45     ` Avi Kivity

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