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From: cinap_lenrek@felloff.net
To: 9fans@9fans.net
Subject: Re: [9fans] store NaN() to memory traps on 386 (387)
Date: Sun,  1 May 2016 01:47:16 +0200	[thread overview]
Message-ID: <d20a32ca7f3330f06ca72b5744a5de4a@felloff.net> (raw)
In-Reply-To: <edc4b3708504ed165efca91446d0f903@felloff.net>

following up, theres another idea:

given that what we want is fp-arithmetic on NaN's to trap when FPINVAL
is set in the fcr, but not when doing simple assignments, what if we just
deal with it in the kernels exception handler for 387?

so when the store traps, and source operand is a SNaN, we just
emulate the instruction and carry on without delivering the note.

--
cinap



  reply	other threads:[~2016-04-30 23:47 UTC|newest]

Thread overview: 11+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2016-04-30 12:40 cinap_lenrek
2016-04-30 23:47 ` cinap_lenrek [this message]
2016-05-02 10:16 ` erik quanstrom
2016-05-02 16:36   ` cinap_lenrek
2016-05-02 16:45     ` erik quanstrom
2016-05-02 19:05       ` cinap_lenrek
2016-05-02 19:17         ` erik quanstrom
2016-05-02 19:27           ` Ryan Gonzalez
2016-05-02 23:23             ` erik quanstrom
2016-05-03  1:13               ` cinap_lenrek
2016-05-02 19:49           ` cinap_lenrek

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