How well is the Arm Cortex-R52 supported by Newlib?

How well is the Arm Cortex-R52 supported by Newlib?

[Sebastian Huber]

Hello,

it seems nobody used Newlib for the Arm Cortex-R52 before

https://sourceware.org/pipermail/newlib/2020/018170.html

?

How well is the Arm Cortex-R52 supported by the machine-specific files 
in Newlib in general? For example, memcpy() just uses the C 
implementation. Are there some improved/updated routines available from 
Arm which haven't been committed to Newlib? I can prepare the patches, I 
just need some hints were I can find the latest stuff.

-- 
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Dornierstr. 4
82178 Puchheim
Germany
email: sebastian.huber@embedded-brains.de
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RE: How well is the Arm Cortex-R52 supported by Newlib?

[Alexander Fedotov (OSS)]

Hi Sebastian

I have pushed some changes in libgloss/arm/crt0.S to support initialization in Thumb mode. But I don't recall any more fixes and improvements for armv8-r.
I would say I'm interested in target optimizations 😊

Alex

-----Original Message-----
From: Newlib <newlib-bounces@sourceware.org> On Behalf Of Sebastian Huber
Sent: Friday, 4 December, 2020 10:50 AM
To: Newlib <newlib@sourceware.org>
Subject: How well is the Arm Cortex-R52 supported by Newlib?

Hello,

it seems nobody used Newlib for the Arm Cortex-R52 before

https://sourceware.org/pipermail/newlib/2020/018170.html

?

How well is the Arm Cortex-R52 supported by the machine-specific files in Newlib in general? For example, memcpy() just uses the C implementation. Are there some improved/updated routines available from Arm which haven't been committed to Newlib? I can prepare the patches, I just need some hints were I can find the latest stuff.

-- 
embedded brains GmbH
Herr Sebastian HUBER
Dornierstr. 4
82178 Puchheim
Germany
email: sebastian.huber@embedded-brains.de
phone: +49-89-18 94 741 - 16
fax:   +49-89-18 94 741 - 08

Registergericht: Amtsgericht München
Registernummer: HRB 157899
Vertretungsberechtigte Geschäftsführer: Peter Rasmussen, Thomas Dörfler
Unsere Datenschutzerklärung finden Sie hier:
https://embedded-brains.de/datenschutzerklaerung/

Re: How well is the Arm Cortex-R52 supported by Newlib?

[Joel Sherrill]

On Mon, Dec 7, 2020, 10:31 AM Alexander Fedotov (OSS) via Newlib <
newlib@sourceware.org> wrote:

> Hi Sebastian
>
> I have pushed some changes in libgloss/arm/crt0.S to support
> initialization in Thumb mode. But I don't recall any more fixes and
> improvements for armv8-r.
> I would say I'm interested in target optimizations 😊
>

Sebastian. I don't know if you remember but Kinsey submitted all the useful
work for an R52 RTEMS BSP that unfortunately did not make it to silicon.
All RTEMS tests were passing on qemu. But since the project died, we didn't
feel that the BSP should be submitted.

We can coordinate off list if you want a snapshot of the remaining patches
that we haven't thought were worth submitting. They may be useful to you.

Note: I don't think we have any for newlib. The C implementations were
sufficient for as far as we for.

--joel

>
> Alex
>
> -----Original Message-----
> From: Newlib <newlib-bounces@sourceware.org> On Behalf Of Sebastian Huber
> Sent: Friday, 4 December, 2020 10:50 AM
> To: Newlib <newlib@sourceware.org>
> Subject: How well is the Arm Cortex-R52 supported by Newlib?
>
> Hello,
>
> it seems nobody used Newlib for the Arm Cortex-R52 before
>
> https://sourceware.org/pipermail/newlib/2020/018170.html
>
> ?
>
> How well is the Arm Cortex-R52 supported by the machine-specific files in
> Newlib in general? For example, memcpy() just uses the C implementation.
> Are there some improved/updated routines available from Arm which haven't
> been committed to Newlib? I can prepare the patches, I just need some hints
> were I can find the latest stuff.
>
> --
> embedded brains GmbH
> Herr Sebastian HUBER
> Dornierstr. 4
> 82178 Puchheim
> Germany
> email: sebastian.huber@embedded-brains.de
> phone: +49-89-18 94 741 - 16
> fax:   +49-89-18 94 741 - 08
>
> Registergericht: Amtsgericht München
> Registernummer: HRB 157899
> Vertretungsberechtigte Geschäftsführer: Peter Rasmussen, Thomas Dörfler
> Unsere Datenschutzerklärung finden Sie hier:
> https://embedded-brains.de/datenschutzerklaerung/
>
>