Re: [ptxdist] OSELAS Toolchain for ARM Cortex A5

[Michael Olbrich <m.olbrich@pengutronix.de>]

On Thu, Jul 16, 2015 at 03:27:57PM +0200, Guillermo Rodriguez Garcia wrote:
> 2015-07-16 15:14 GMT+02:00 Jean-Claude Monnin <jc_monnin@emailplus.org>:
> Uhm. I am using a SAMA5D3 Xplained board (so no NEON). However
> Linaro's README file for the cortex-strings project states that these
> should also be available for CPUs without NEON support:
> https://git.linaro.org/toolchain/cortex-strings.git/blob/HEAD:/README
> 
> As stated, I used the arm-v7a-linux-gnueabihf from
> OSELAS.Toolchain-2013.12.2 without any modifications or changes and
> the system boots and seems to work just fine. I'll keep an eye on
> this.

If the cortex-strings are actually used, then any memcpy should crash.
However, it is quite possible that these where ignored by the glibc
build system for ARM v7a. I don't remember the details here. Something like
that happend with some version but I don't remember which.

> It would be good to konw why cortex-strings was disabled in more
> recent versions of the OSELAS.Toolchain. Can someone shed some light
> here?

As a said in my other mail glibc no includes a newer version of this code.
I left it there for cortex-a8 because my benchmarks showed that the new
versions did not perform very well there.
I'll revisit the topic for the next major toolchain version.

Michael

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