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From: Mulyadi Santosa <a_mulyadi@softhome.net>
To: Paul Brook <paul@codesourcery.com>, qemu-devel@nongnu.org
Subject: Re: Re: [Qemu-devel] mini documentation of "info registers" output
Date: Sat, 2 Jul 2005 11:12:10 +0700	[thread overview]
Message-ID: <200507021112.10750.a_mulyadi@softhome.net> (raw)
In-Reply-To: <200507011317.43863.paul@codesourcery.com>

Hello Paul...

> > CCD : Compiled Code Destination (?)
>
> Condition Code Source.

Or Condition Code Destination?

> These 3 are used to implement lazy flag evaluation. Most x86
> instructions set the condition code flags, but only a relatively
> small subset of instructions actually use these flags.

hm, i see....BTW, these two lazy flags, CCS and CCD, they are the 
representation of EFLAGS? CMIIW. If yes, can I assume that they have 
same format as EFLAGS?

anyway, it is safe to frequently ignore flags? For example, if MUL 
generate overflow and set Zero Flag, Qemu must be aware of it, right? 
Or we can still safely ignore it?

regards

Mulyadi

  reply	other threads:[~2005-07-02  5:02 UTC|newest]

Thread overview: 5+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2005-07-01  4:33 [Qemu-devel] mini documentation of "info registers" output Mulyadi Santosa
2005-07-01 12:17 ` Paul Brook
2005-07-02  4:12   ` Mulyadi Santosa [this message]
2005-07-02  7:18     ` Gwenole Beauchesne
2005-07-02 15:08     ` Paul Brook

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