linux-kernel - Re: Linux and FPU

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Message-ID: <49CAA819.2010102@gmail.com>
Date:	Wed, 25 Mar 2009 22:54:33 +0100
From:	Jiri Slaby <jirislaby@...il.com>
To:	Evgeniy Ivanov <lolkaantimat@...il.com>
CC:	linux-kernel@...r.kernel.org
Subject: Re: Linux and FPU

On 03/25/2009 12:09 PM, Evgeniy Ivanov wrote:
> Hello,
> 
> Can somebody point me to some general places, where I can look on how FPU 
> support is implemented. I understand that there is not one place, where things 
> done, the only I know, that there should be places for detecting FPU hardware 
> and places with assembly routines for pushing around floating point registers, 

I think you want to start with
arch/x86/kernel/i387.c
arch/x86/math-emu/

> assembly/C-hybrid code for handling floating point exceptions.

and arch/x86/kernel/traps.c

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