From: Avi Kivity <avi-atKUWr5tajBWk0Htik3J/w@public.gmane.org>
To: "Paweł Sikora" <pluto-PIIpFW8S9c0@public.gmane.org>
Cc: kvm-devel-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org,
caglar-caicS1wCkhO6A22drWdTBw@public.gmane.org,
linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org
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-PIIpFW8S9c0@public.gmane.org>
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
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next prev parent 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 [PATCH] KVM: 'asm' operand has impossible constraints S.Çağlar Onur
[not found] ` <200701260140.47760.caglar-caicS1wCkhO6A22drWdTBw@public.gmane.org>
2007-01-27 9:05 ` Avi Kivity
2007-01-27 16:36 ` Paweł Sikora
[not found] ` <200701271736.30271.pluto-PIIpFW8S9c0@public.gmane.org>
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
[not found] ` <200701272328.31532.caglar-caicS1wCkhO6A22drWdTBw@public.gmane.org>
2007-01-28 9:45 ` Avi Kivity
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