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.
>
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