[PATCH 1/2] Adding ARM VFP V2 support

[Kirspel, Kevin]

I can create a new patch without this.  It was just there to fully support the capabilities of the VFP.  I don't enable the fast math option in my BSP but I didn't know if it was useful for someone else.

Kevin Kirspel
Electrical Engineer - Sr. Staff
Idexx Roswell
235 Hembree Park Drive
Roswell GA 30076
Tel: (770)-510-4444 ext. 81642
Direct: (770)-688-1642
Fax: (770)-510-4445

-----Original Message-----
From: Sebastian Huber [mailto:sebastian.huber at embedded-brains.de] 
Sent: Tuesday, January 24, 2017 1:16 AM
To: Kirspel, Kevin <Kevin-Kirspel at idexx.com>; devel at rtems.org
Subject: Re: [PATCH 1/2] Adding ARM VFP V2 support

In this case the FPU is no longer in full-compliance with EEE 754. I don't think this should be set by the startup code depending on some BSP optimization options. I guess the paranoia test fails if you enable this.

On 23/01/17 15:43, Kirspel, Kevin wrote:
> Yes
>
> Kevin Kirspel
> Electrical Engineer - Sr. Staff
> Idexx Roswell
> 235 Hembree Park Drive
> Roswell GA 30076
> Tel: (770)-510-4444 ext. 81642
> Direct: (770)-688-1642
> Fax: (770)-510-4445
>
> -----Original Message-----
> From: Sebastian Huber [mailto:sebastian.huber at embedded-brains.de]
> Sent: Monday, January 23, 2017 9:37 AM
> To: Kirspel, Kevin <Kevin-Kirspel at idexx.com>; devel at rtems.org
> Subject: Re: [PATCH 1/2] Adding ARM VFP V2 support
>
>
>
> On 23/01/17 14:51, Kevin Kirspel wrote:
>> +#ifdef __FAST_MATH__
>> +	/* Enable Fast FPU options */
>> +	mov r0, #(3 << 24)
>> +	vmsr FPSCR, r0
>> +#endif
> This define is related to the GCC fast-math optimization option.
>

--
Sebastian Huber, embedded brains GmbH

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