Sources to port fenv.h to ARM and AARCH64

[Eshan Dhawan]

thanks, dr Joel

I had gone through the musl-libc library but it doesn't have much
architecture specific support for ARM as well as AARCH64
It has support for s390x, m68k, powerpc64


On Sat, Mar 21, 2020 at 1:32 AM Joel Sherrill <joel at rtems.org> wrote:

>
>
> On Fri, Mar 20, 2020 at 2:43 PM Eshan Dhawan <eshandhawan51 at gmail.com>
> wrote:
>
>> What would be the preferred source to port fenv.h to ARM and AARCH64
>> its implementation is present in both FreeBSD as well AS NetBSD
>> -> ARM
>> ---FreeBSD Source
>> # https://github.com/freebsd/freebsd/tree/master/lib/msun/arm
>> ---NetBSD Source
>> # https://github.com/NetBSD/src/tree/trunk/lib/libm/arch/arm
>>
>> ->AARCH64
>> ---FreeBSD Source
>> # https://github.com/freebsd/freebsd/tree/master/lib/msun/aarch64
>> ---NetBSD Source
>> # https://github.com/NetBSD/src/tree/trunk/lib/libm/arch/aarch64
>>
>
> Don't forget MUSL-C Library which has a lot of architectures and
> is appropriately licensed.
>
> https://git.musl-libc.org/cgit/musl/tree/src/fenv
>
> I think our the order is going to be FreeBSD, NetBSD, then other places.
>
> The code drops into newlib's libm in a particular way which may require
> some refactoring. fenv.h is shared across all ports and machine/fenv.h is
> where port code goes. There must be an architecture specific file for each
> method. But the entire implementation could go in one file and the others
> be stubs. The i386 does this.
>
> --joel
>
>>
>>
>> <https://github.com/NetBSD/src/tree/trunk/lib/libm/arch/aarch64>
>>
>> Thanks
>> -Eshan
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>
>
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