Re: Sources to port fenv.h to ARM and AARCH64

[Eshan Dhawan]

It seems we can't follow a single platform
We will be needing to take the preferred architectures from both FreeBSD as
well as NetBSD
What would you all suggest
Also I musl has implementation structure similar to that in NetBSD and has
some sort of support present for architectures that are not supported by
NetBSD
So, can we take that into considerationfor adding fenv ?

On Sun, Mar 22, 2020 at 3:15 PM Eshan Dhawan 
wrote:

>
>
> On Sun, Mar 22, 2020 at 2:49 AM Joel Sherrill  wrote:
>
>>
>>
>> On Sat, Mar 21, 2020 at 4:05 PM Aditya Upadhyay 
>> wrote:
>>
>>> On Sun, Mar 22, 2020 at 1:56 AM Joel Sherrill  wrote:
>>> >
>>> >
>>> >
>>> > On Sat, Mar 21, 2020, 3:16 PM Aditya Upadhyay 
>>> wrote:
>>> >>
>>> >> On Sun, Mar 22, 2020 at 1:30 AM Joel Sherrill  wrote:
>>> >> >
>>> >> >
>>> >> >
>>> >> > On Sat, Mar 21, 2020 at 3:03 AM Aditya Upadhyay <
>>> aadit0...@gmail.com> wrote:
>>> >> >>
>>> >> >>
>>> >> >>
>>> >> >> On Sat, 21 Mar 2020, 10:29 Eshan Dhawan, 
>>> wrote:
>>> >> >>>
>>> >> >>> I went through the FreeBSD and NetBSD sources for implementation
>>> >> >>> In FreeBSD there is an architecture-specific implementation with
>>> different header file for each architecture it supports .
>>> >> >>> Whereas in NetBSD there is a single fenv.h defined but each
>>> architecture has its own C file to implement the functions.
>>> >> >>> Also FreeBSD has soft-float for ARM
>>> >> >>> So, I think FreeBSD would be a better option.
>>> >> >>
>>> >> >>
>>> >> >> Look into this discussion on mail thread:
>>> >> >> https://sourceware.org/legacy-ml/newlib/2017/msg00818.html
>>> >> >>
>>> >> >> and this patch series on newlib mailing list.
>>> >> >>
>>> >> >> https://sourceware.org/legacy-ml/newlib/2019/msg00418.html .
>>> >> >>
>>> >> >> It will help to understand the fenv-stub code.
>>> >> >
>>> >> >
>>> >> > I am having trouble finding the implementation of any fenv method
>>> in the NetBSD code. I only am finding the weak alias mappings. Where is an
>>> example of the body of one of the methods in any architecture?
>>> >> >
>>> >>
>>> >> I have cloned this NetBSD Sources. As I can see those
>>> >> architecture-specific implemented methods here. Please correct me if I
>>> >> am looking into different than what you are looking for.
>>> >>
>>> >> ./lib/libm/arch/powerpc/fenv.c
>>> >> ./lib/libm/arch/sh/fenv.c
>>> >> ./lib/libm/arch/mips64/fenv.c
>>> >> ./lib/libm/arch/amd64/fenv.c
>>> >> ./lib/libm/arch/arm/fenv.c
>>> >> ./lib/libm/arch/i387/fenv.c
>>> >> ./lib/libm/arch/hppa/fenv.c
>>> >> ./lib/libm/arch/m88k/fenv.c
>>> >> ./lib/libm/arch/alpha/fenv.c
>>> >> ./lib/libm/arch/sparc64/fenv.c
>>> >> ./lib/libm/arch/aarch64/fenv.c
>>> >> ./regress/lib/libm/fenv/fenv.c
>>> >
>>> >
>>> > That's what I see browsing the repo.
>>> >
>>> > The single file NetBSD looks easy to integrate. Would be similar to
>>> the x86_64 or i386 there now on file layout.
>>> >
>>> > Does the freebsd support more hardware variants?
>>>
>>> FreeBSD does not have fenv support for some architecture like RISCV,
>>> M88k, alpha architecture, I can see netbsd support more
>>> hardware variants. NetBSD includes fenv support for these architecture
>>> also.
>>>
>>
>> +1
>>
>> NetBSD has more architectures and looks easier to integrate. But we need
>> to be
>> sure the NetBSD implementation for an specific architecture covers all
>> the cases
>> that FreeBSD does. If equal, pick the more that is easier to integrate.
>>
>>
> I went through the FreeBSD and NetBSD repositories
> NetBSD has support for :
> aarch64
> arm
> i387
> sparc 
> x86_64
> alpha
> hppa
> riscv
>
> while lacks the support for :
> sh3
> powerpc
> mips
> m68k
> ia64 (incomplete implementation)
>
> where as FreeBSD has an added support for mips and powerpc other than
> supported in NetBSD
>
> list of supported architectures in FreeBSD :
> aarch64
> amd64
> arm
> i387
> MIPS
> PowerPC
> RISC-V
> sparc64
> X86
>
> --Eshan
>
> --joel
>>
>>
>>>
>>> >>
>>> >>
>>> >> > --joel
>>> >> >>
>>> >> >>
>>> >> >>
>>> >> >>>
>>> >> >>> On Sat, Mar 21, 2020 at 2:37 AM Joel Sherrill 
>>> wrote:
>>> >> 
>>> >> 
>>> >> 
>>> >>  On Fri, Mar 20, 2020 at 3:33 PM Eshan Dhawan <
>>> eshandhawa...@gmail.com> wrote:
>>> >> >
>>> >> > 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
>>> >> 
>>> >> 
>>> >>  This type of evaluation is important.  The architecture may be
>>> supported in only one implementation or one may be more complete than
>>> another.
>>> >> 
>>> >>  Ignoring the license requirements of course.
>>> >> >
>>> >> >
>>> >> >
>>> >> > On Sat, Mar 21, 2020 at 1:32 AM Joel Sherrill 
>>> wrote:
>>> >> >>
>>> >> >>
>>> >> >>
>>> >> >> On Fri, Mar 20, 2020 at 2:43 PM Eshan Dhawan <
>>> eshandhawa...@gmail.com> wrote:
>>> >> >>>
>>> >> >>> What would be 

Re: Sources to port fenv.h to ARM and AARCH64

[Eshan Dhawan]

On Sun, Mar 22, 2020 at 2:49 AM Joel Sherrill  wrote:

>
>
> On Sat, Mar 21, 2020 at 4:05 PM Aditya Upadhyay 
> wrote:
>
>> On Sun, Mar 22, 2020 at 1:56 AM Joel Sherrill  wrote:
>> >
>> >
>> >
>> > On Sat, Mar 21, 2020, 3:16 PM Aditya Upadhyay 
>> wrote:
>> >>
>> >> On Sun, Mar 22, 2020 at 1:30 AM Joel Sherrill  wrote:
>> >> >
>> >> >
>> >> >
>> >> > On Sat, Mar 21, 2020 at 3:03 AM Aditya Upadhyay 
>> wrote:
>> >> >>
>> >> >>
>> >> >>
>> >> >> On Sat, 21 Mar 2020, 10:29 Eshan Dhawan, 
>> wrote:
>> >> >>>
>> >> >>> I went through the FreeBSD and NetBSD sources for implementation
>> >> >>> In FreeBSD there is an architecture-specific implementation with
>> different header file for each architecture it supports .
>> >> >>> Whereas in NetBSD there is a single fenv.h defined but each
>> architecture has its own C file to implement the functions.
>> >> >>> Also FreeBSD has soft-float for ARM
>> >> >>> So, I think FreeBSD would be a better option.
>> >> >>
>> >> >>
>> >> >> Look into this discussion on mail thread:
>> >> >> https://sourceware.org/legacy-ml/newlib/2017/msg00818.html
>> >> >>
>> >> >> and this patch series on newlib mailing list.
>> >> >>
>> >> >> https://sourceware.org/legacy-ml/newlib/2019/msg00418.html .
>> >> >>
>> >> >> It will help to understand the fenv-stub code.
>> >> >
>> >> >
>> >> > I am having trouble finding the implementation of any fenv method in
>> the NetBSD code. I only am finding the weak alias mappings. Where is an
>> example of the body of one of the methods in any architecture?
>> >> >
>> >>
>> >> I have cloned this NetBSD Sources. As I can see those
>> >> architecture-specific implemented methods here. Please correct me if I
>> >> am looking into different than what you are looking for.
>> >>
>> >> ./lib/libm/arch/powerpc/fenv.c
>> >> ./lib/libm/arch/sh/fenv.c
>> >> ./lib/libm/arch/mips64/fenv.c
>> >> ./lib/libm/arch/amd64/fenv.c
>> >> ./lib/libm/arch/arm/fenv.c
>> >> ./lib/libm/arch/i387/fenv.c
>> >> ./lib/libm/arch/hppa/fenv.c
>> >> ./lib/libm/arch/m88k/fenv.c
>> >> ./lib/libm/arch/alpha/fenv.c
>> >> ./lib/libm/arch/sparc64/fenv.c
>> >> ./lib/libm/arch/aarch64/fenv.c
>> >> ./regress/lib/libm/fenv/fenv.c
>> >
>> >
>> > That's what I see browsing the repo.
>> >
>> > The single file NetBSD looks easy to integrate. Would be similar to the
>> x86_64 or i386 there now on file layout.
>> >
>> > Does the freebsd support more hardware variants?
>>
>> FreeBSD does not have fenv support for some architecture like RISCV,
>> M88k, alpha architecture, I can see netbsd support more
>> hardware variants. NetBSD includes fenv support for these architecture
>> also.
>>
>
> +1
>
> NetBSD has more architectures and looks easier to integrate. But we need
> to be
> sure the NetBSD implementation for an specific architecture covers all the
> cases
> that FreeBSD does. If equal, pick the more that is easier to integrate.
>
>
I went through the FreeBSD and NetBSD repositories
NetBSD has support for :
aarch64
arm
i387
sparc 
x86_64
alpha
hppa
riscv

while lacks the support for :
sh3
powerpc
mips
m68k
ia64 (incomplete implementation)

where as FreeBSD has an added support for mips and powerpc other than
supported in NetBSD

list of supported architectures in FreeBSD :
aarch64
amd64
arm
i387
MIPS
PowerPC
RISC-V
sparc64
X86

--Eshan

--joel
>
>
>>
>> >>
>> >>
>> >> > --joel
>> >> >>
>> >> >>
>> >> >>
>> >> >>>
>> >> >>> On Sat, Mar 21, 2020 at 2:37 AM Joel Sherrill 
>> wrote:
>> >> 
>> >> 
>> >> 
>> >>  On Fri, Mar 20, 2020 at 3:33 PM Eshan Dhawan <
>> eshandhawa...@gmail.com> wrote:
>> >> >
>> >> > 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
>> >> 
>> >> 
>> >>  This type of evaluation is important.  The architecture may be
>> supported in only one implementation or one may be more complete than
>> another.
>> >> 
>> >>  Ignoring the license requirements of course.
>> >> >
>> >> >
>> >> >
>> >> > On Sat, Mar 21, 2020 at 1:32 AM Joel Sherrill 
>> wrote:
>> >> >>
>> >> >>
>> >> >>
>> >> >> On Fri, Mar 20, 2020 at 2:43 PM Eshan Dhawan <
>> eshandhawa...@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
>> >> >>
>> 

Re: Sources to port fenv.h to ARM and AARCH64

[Vaibhav Gupta]

>
> >>
>> >> I have cloned this NetBSD Sources. As I can see those
>> >> architecture-specific implemented methods here. Please correct me if I
>> >> am looking into different than what you are looking for.
>> >>
>> >> ./lib/libm/arch/powerpc/fenv.c
>> >> ./lib/libm/arch/sh/fenv.c
>> >> ./lib/libm/arch/mips64/fenv.c
>> >> ./lib/libm/arch/amd64/fenv.c
>> >> ./lib/libm/arch/arm/fenv.c
>> >> ./lib/libm/arch/i387/fenv.c
>> >> ./lib/libm/arch/hppa/fenv.c
>> >> ./lib/libm/arch/m88k/fenv.c
>> >> ./lib/libm/arch/alpha/fenv.c
>> >> ./lib/libm/arch/sparc64/fenv.c
>> >> ./lib/libm/arch/aarch64/fenv.c
>> >> ./regress/lib/libm/fenv/fenv.c
>> >
>> >
>> > That's what I see browsing the repo.
>> >
>> > The single file NetBSD looks easy to integrate. Would be similar to the
>> x86_64 or i386 there now on file layout.
>> >
>> > Does the freebsd support more hardware variants?
>>
>> FreeBSD does not have fenv support for some architecture like RISCV,
>> M88k, alpha architecture, I can see netbsd support more
>> hardware variants. NetBSD includes fenv support for these architecture
>> also.
>>
>
> +1
>
> NetBSD has more architectures and looks easier to integrate. But we need
> to be
> sure the NetBSD implementation for an specific architecture covers all the
> cases
> that FreeBSD does. If equal, pick the more that is easier to integrate.
>
> --joel
>
Last year I found various sources:
https://lists.rtems.org/pipermail/devel/2019-July/026580.html

https://lists.rtems.org/pipermail/devel/2019-July/054391.html

--Vaibhav
___
devel mailing list
devel@rtems.org
http://lists.rtems.org/mailman/listinfo/devel

Re: Sources to port fenv.h to ARM and AARCH64

[Joel Sherrill]

On Sat, Mar 21, 2020 at 4:05 PM Aditya Upadhyay  wrote:

> On Sun, Mar 22, 2020 at 1:56 AM Joel Sherrill  wrote:
> >
> >
> >
> > On Sat, Mar 21, 2020, 3:16 PM Aditya Upadhyay 
> wrote:
> >>
> >> On Sun, Mar 22, 2020 at 1:30 AM Joel Sherrill  wrote:
> >> >
> >> >
> >> >
> >> > On Sat, Mar 21, 2020 at 3:03 AM Aditya Upadhyay 
> wrote:
> >> >>
> >> >>
> >> >>
> >> >> On Sat, 21 Mar 2020, 10:29 Eshan Dhawan, 
> wrote:
> >> >>>
> >> >>> I went through the FreeBSD and NetBSD sources for implementation
> >> >>> In FreeBSD there is an architecture-specific implementation with
> different header file for each architecture it supports .
> >> >>> Whereas in NetBSD there is a single fenv.h defined but each
> architecture has its own C file to implement the functions.
> >> >>> Also FreeBSD has soft-float for ARM
> >> >>> So, I think FreeBSD would be a better option.
> >> >>
> >> >>
> >> >> Look into this discussion on mail thread:
> >> >> https://sourceware.org/legacy-ml/newlib/2017/msg00818.html
> >> >>
> >> >> and this patch series on newlib mailing list.
> >> >>
> >> >> https://sourceware.org/legacy-ml/newlib/2019/msg00418.html .
> >> >>
> >> >> It will help to understand the fenv-stub code.
> >> >
> >> >
> >> > I am having trouble finding the implementation of any fenv method in
> the NetBSD code. I only am finding the weak alias mappings. Where is an
> example of the body of one of the methods in any architecture?
> >> >
> >>
> >> I have cloned this NetBSD Sources. As I can see those
> >> architecture-specific implemented methods here. Please correct me if I
> >> am looking into different than what you are looking for.
> >>
> >> ./lib/libm/arch/powerpc/fenv.c
> >> ./lib/libm/arch/sh/fenv.c
> >> ./lib/libm/arch/mips64/fenv.c
> >> ./lib/libm/arch/amd64/fenv.c
> >> ./lib/libm/arch/arm/fenv.c
> >> ./lib/libm/arch/i387/fenv.c
> >> ./lib/libm/arch/hppa/fenv.c
> >> ./lib/libm/arch/m88k/fenv.c
> >> ./lib/libm/arch/alpha/fenv.c
> >> ./lib/libm/arch/sparc64/fenv.c
> >> ./lib/libm/arch/aarch64/fenv.c
> >> ./regress/lib/libm/fenv/fenv.c
> >
> >
> > That's what I see browsing the repo.
> >
> > The single file NetBSD looks easy to integrate. Would be similar to the
> x86_64 or i386 there now on file layout.
> >
> > Does the freebsd support more hardware variants?
>
> FreeBSD does not have fenv support for some architecture like RISCV,
> M88k, alpha architecture, I can see netbsd support more
> hardware variants. NetBSD includes fenv support for these architecture
> also.
>

+1

NetBSD has more architectures and looks easier to integrate. But we need to
be
sure the NetBSD implementation for an specific architecture covers all the
cases
that FreeBSD does. If equal, pick the more that is easier to integrate.

--joel


>
> >>
> >>
> >> > --joel
> >> >>
> >> >>
> >> >>
> >> >>>
> >> >>> On Sat, Mar 21, 2020 at 2:37 AM Joel Sherrill 
> wrote:
> >> 
> >> 
> >> 
> >>  On Fri, Mar 20, 2020 at 3:33 PM Eshan Dhawan <
> eshandhawa...@gmail.com> wrote:
> >> >
> >> > 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
> >> 
> >> 
> >>  This type of evaluation is important.  The architecture may be
> supported in only one implementation or one may be more complete than
> another.
> >> 
> >>  Ignoring the license requirements of course.
> >> >
> >> >
> >> >
> >> > On Sat, Mar 21, 2020 at 1:32 AM Joel Sherrill 
> wrote:
> >> >>
> >> >>
> >> >>
> >> >> On Fri, Mar 20, 2020 at 2:43 PM Eshan Dhawan <
> eshandhawa...@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 

Re: Sources to port fenv.h to ARM and AARCH64

[Aditya Upadhyay]

On Sun, Mar 22, 2020 at 1:56 AM Joel Sherrill  wrote:
>
>
>
> On Sat, Mar 21, 2020, 3:16 PM Aditya Upadhyay  wrote:
>>
>> On Sun, Mar 22, 2020 at 1:30 AM Joel Sherrill  wrote:
>> >
>> >
>> >
>> > On Sat, Mar 21, 2020 at 3:03 AM Aditya Upadhyay  
>> > wrote:
>> >>
>> >>
>> >>
>> >> On Sat, 21 Mar 2020, 10:29 Eshan Dhawan,  wrote:
>> >>>
>> >>> I went through the FreeBSD and NetBSD sources for implementation
>> >>> In FreeBSD there is an architecture-specific implementation with 
>> >>> different header file for each architecture it supports .
>> >>> Whereas in NetBSD there is a single fenv.h defined but each architecture 
>> >>> has its own C file to implement the functions.
>> >>> Also FreeBSD has soft-float for ARM
>> >>> So, I think FreeBSD would be a better option.
>> >>
>> >>
>> >> Look into this discussion on mail thread:
>> >> https://sourceware.org/legacy-ml/newlib/2017/msg00818.html
>> >>
>> >> and this patch series on newlib mailing list.
>> >>
>> >> https://sourceware.org/legacy-ml/newlib/2019/msg00418.html .
>> >>
>> >> It will help to understand the fenv-stub code.
>> >
>> >
>> > I am having trouble finding the implementation of any fenv method in the 
>> > NetBSD code. I only am finding the weak alias mappings. Where is an 
>> > example of the body of one of the methods in any architecture?
>> >
>>
>> I have cloned this NetBSD Sources. As I can see those
>> architecture-specific implemented methods here. Please correct me if I
>> am looking into different than what you are looking for.
>>
>> ./lib/libm/arch/powerpc/fenv.c
>> ./lib/libm/arch/sh/fenv.c
>> ./lib/libm/arch/mips64/fenv.c
>> ./lib/libm/arch/amd64/fenv.c
>> ./lib/libm/arch/arm/fenv.c
>> ./lib/libm/arch/i387/fenv.c
>> ./lib/libm/arch/hppa/fenv.c
>> ./lib/libm/arch/m88k/fenv.c
>> ./lib/libm/arch/alpha/fenv.c
>> ./lib/libm/arch/sparc64/fenv.c
>> ./lib/libm/arch/aarch64/fenv.c
>> ./regress/lib/libm/fenv/fenv.c
>
>
> That's what I see browsing the repo.
>
> The single file NetBSD looks easy to integrate. Would be similar to the 
> x86_64 or i386 there now on file layout.
>
> Does the freebsd support more hardware variants?

FreeBSD does not have fenv support for some architecture like RISCV,
M88k, alpha architecture, I can see netbsd support more
hardware variants. NetBSD includes fenv support for these architecture also.

>>
>>
>> > --joel
>> >>
>> >>
>> >>
>> >>>
>> >>> On Sat, Mar 21, 2020 at 2:37 AM Joel Sherrill  wrote:
>> 
>> 
>> 
>>  On Fri, Mar 20, 2020 at 3:33 PM Eshan Dhawan  
>>  wrote:
>> >
>> > 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
>> 
>> 
>>  This type of evaluation is important.  The architecture may be 
>>  supported in only one implementation or one may be more complete than 
>>  another.
>> 
>>  Ignoring the license requirements of course.
>> >
>> >
>> >
>> > On Sat, Mar 21, 2020 at 1:32 AM Joel Sherrill  wrote:
>> >>
>> >>
>> >>
>> >> On Fri, Mar 20, 2020 at 2:43 PM Eshan Dhawan 
>> >>  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
>> >>>
>> >>>
>> >>>
>> >>>
>> >>> Thanks
>> >>> -Eshan
>> >>> ___
>> >>> devel mailing list
>> >>> devel@rtems.org
>> >>> http://lists.rtems.org/mailman/listinfo/devel
>> >>>
>> >>> ___
>> >>> devel mailing list
>> >>> devel@rtems.org
>> >>> 

Re: Sources to port fenv.h to ARM and AARCH64

[Joel Sherrill]

On Sat, Mar 21, 2020, 3:16 PM Aditya Upadhyay  wrote:

> On Sun, Mar 22, 2020 at 1:30 AM Joel Sherrill  wrote:
> >
> >
> >
> > On Sat, Mar 21, 2020 at 3:03 AM Aditya Upadhyay 
> wrote:
> >>
> >>
> >>
> >> On Sat, 21 Mar 2020, 10:29 Eshan Dhawan, 
> wrote:
> >>>
> >>> I went through the FreeBSD and NetBSD sources for implementation
> >>> In FreeBSD there is an architecture-specific implementation with
> different header file for each architecture it supports .
> >>> Whereas in NetBSD there is a single fenv.h defined but each
> architecture has its own C file to implement the functions.
> >>> Also FreeBSD has soft-float for ARM
> >>> So, I think FreeBSD would be a better option.
> >>
> >>
> >> Look into this discussion on mail thread:
> >> https://sourceware.org/legacy-ml/newlib/2017/msg00818.html
> >>
> >> and this patch series on newlib mailing list.
> >>
> >> https://sourceware.org/legacy-ml/newlib/2019/msg00418.html .
> >>
> >> It will help to understand the fenv-stub code.
> >
> >
> > I am having trouble finding the implementation of any fenv method in the
> NetBSD code. I only am finding the weak alias mappings. Where is an example
> of the body of one of the methods in any architecture?
> >
>
> I have cloned this NetBSD Sources. As I can see those
> architecture-specific implemented methods here. Please correct me if I
> am looking into different than what you are looking for.
>
> ./lib/libm/arch/powerpc/fenv.c
> ./lib/libm/arch/sh/fenv.c
> ./lib/libm/arch/mips64/fenv.c
> ./lib/libm/arch/amd64/fenv.c
> ./lib/libm/arch/arm/fenv.c
> ./lib/libm/arch/i387/fenv.c
> ./lib/libm/arch/hppa/fenv.c
> ./lib/libm/arch/m88k/fenv.c
> ./lib/libm/arch/alpha/fenv.c
> ./lib/libm/arch/sparc64/fenv.c
> ./lib/libm/arch/aarch64/fenv.c
> ./regress/lib/libm/fenv/fenv.c
>

That's what I see browsing the repo.

The single file NetBSD looks easy to integrate. Would be similar to the
x86_64 or i386 there now on file layout.

Does the freebsd support more hardware variants?

>
> > --joel
> >>
> >>
> >>
> >>>
> >>> On Sat, Mar 21, 2020 at 2:37 AM Joel Sherrill  wrote:
> 
> 
> 
>  On Fri, Mar 20, 2020 at 3:33 PM Eshan Dhawan 
> wrote:
> >
> > 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
> 
> 
>  This type of evaluation is important.  The architecture may be
> supported in only one implementation or one may be more complete than
> another.
> 
>  Ignoring the license requirements of course.
> >
> >
> >
> > On Sat, Mar 21, 2020 at 1:32 AM Joel Sherrill 
> wrote:
> >>
> >>
> >>
> >> On Fri, Mar 20, 2020 at 2:43 PM Eshan Dhawan <
> eshandhawa...@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
> >>>
> >>>
> >>>
> >>>
> >>> Thanks
> >>> -Eshan
> >>> ___
> >>> devel mailing list
> >>> devel@rtems.org
> >>> http://lists.rtems.org/mailman/listinfo/devel
> >>>
> >>> ___
> >>> devel mailing list
> >>> devel@rtems.org
> >>> http://lists.rtems.org/mailman/listinfo/devel
> >>
> >> ___
> >> devel mailing list
> >> devel@rtems.org
> >> http://lists.rtems.org/mailman/listinfo/devel
>
___
devel mailing list
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http://lists.rtems.org/mailman/listinfo/devel

Re: Sources to port fenv.h to ARM and AARCH64

[Aditya Upadhyay]

On Sun, Mar 22, 2020 at 1:30 AM Joel Sherrill  wrote:
>
>
>
> On Sat, Mar 21, 2020 at 3:03 AM Aditya Upadhyay  wrote:
>>
>>
>>
>> On Sat, 21 Mar 2020, 10:29 Eshan Dhawan,  wrote:
>>>
>>> I went through the FreeBSD and NetBSD sources for implementation
>>> In FreeBSD there is an architecture-specific implementation with different 
>>> header file for each architecture it supports .
>>> Whereas in NetBSD there is a single fenv.h defined but each architecture 
>>> has its own C file to implement the functions.
>>> Also FreeBSD has soft-float for ARM
>>> So, I think FreeBSD would be a better option.
>>
>>
>> Look into this discussion on mail thread:
>> https://sourceware.org/legacy-ml/newlib/2017/msg00818.html
>>
>> and this patch series on newlib mailing list.
>>
>> https://sourceware.org/legacy-ml/newlib/2019/msg00418.html .
>>
>> It will help to understand the fenv-stub code.
>
>
> I am having trouble finding the implementation of any fenv method in the 
> NetBSD code. I only am finding the weak alias mappings. Where is an example 
> of the body of one of the methods in any architecture?
>

I have cloned this NetBSD Sources. As I can see those
architecture-specific implemented methods here. Please correct me if I
am looking into different than what you are looking for.

./lib/libm/arch/powerpc/fenv.c
./lib/libm/arch/sh/fenv.c
./lib/libm/arch/mips64/fenv.c
./lib/libm/arch/amd64/fenv.c
./lib/libm/arch/arm/fenv.c
./lib/libm/arch/i387/fenv.c
./lib/libm/arch/hppa/fenv.c
./lib/libm/arch/m88k/fenv.c
./lib/libm/arch/alpha/fenv.c
./lib/libm/arch/sparc64/fenv.c
./lib/libm/arch/aarch64/fenv.c
./regress/lib/libm/fenv/fenv.c

> --joel
>>
>>
>>
>>>
>>> On Sat, Mar 21, 2020 at 2:37 AM Joel Sherrill  wrote:



 On Fri, Mar 20, 2020 at 3:33 PM Eshan Dhawan  
 wrote:
>
> 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


 This type of evaluation is important.  The architecture may be supported 
 in only one implementation or one may be more complete than another.

 Ignoring the license requirements of course.
>
>
>
> On Sat, Mar 21, 2020 at 1:32 AM Joel Sherrill  wrote:
>>
>>
>>
>> On Fri, Mar 20, 2020 at 2:43 PM Eshan Dhawan  
>> 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
>>>
>>>
>>>
>>>
>>> Thanks
>>> -Eshan
>>> ___
>>> devel mailing list
>>> devel@rtems.org
>>> http://lists.rtems.org/mailman/listinfo/devel
>>>
>>> ___
>>> devel mailing list
>>> devel@rtems.org
>>> http://lists.rtems.org/mailman/listinfo/devel
>>
>> ___
>> devel mailing list
>> devel@rtems.org
>> http://lists.rtems.org/mailman/listinfo/devel
___
devel mailing list
devel@rtems.org
http://lists.rtems.org/mailman/listinfo/devel

Re: Sources to port fenv.h to ARM and AARCH64

[Eshan Dhawan]

On Sun, Mar 22, 2020 at 1:30 AM Joel Sherrill  wrote:

>
>
> On Sat, Mar 21, 2020 at 3:03 AM Aditya Upadhyay 
> wrote:
>
>>
>>
>> On Sat, 21 Mar 2020, 10:29 Eshan Dhawan,  wrote:
>>
>>> I went through the FreeBSD and NetBSD sources for implementation
>>> In FreeBSD there is an architecture-specific implementation with
>>> different header file for each architecture it supports .
>>> Whereas in NetBSD there is a single fenv.h defined but each architecture
>>> has its own C file to implement the functions.
>>> Also FreeBSD has soft-float for ARM
>>> So, I think FreeBSD would be a better option.
>>>
>>
>> Look into this discussion on mail thread:
>> https://sourceware.org/legacy-ml/newlib/2017/msg00818.html
>>
>> and this patch series on newlib mailing list.
>>
>> https://sourceware.org/legacy-ml/newlib/2019/msg00418.html .
>>
>> It will help to understand the fenv-stub code.
>>
>
> I am having trouble finding the implementation of any fenv method in the
> NetBSD code. I only am finding the weak alias mappings. Where is an example
> of the body of one of the methods in any architecture?
>

This is the implementation File of fenv.c in arm
https://github.com/NetBSD/src/blob/trunk/lib/libm/arch/arm/fenv.c
It contains some sort of implementation for arm

This is the implementation File of fenv.c in aarch
https://github.com/NetBSD/src/blob/trunk/lib/libm/arch/aarch64/fenv.c
It contains some sort of implementation for aarch

--eshan

>
> --joel
>
>>
>>
>>
>>> On Sat, Mar 21, 2020 at 2:37 AM Joel Sherrill  wrote:
>>>


 On Fri, Mar 20, 2020 at 3:33 PM Eshan Dhawan 
 wrote:

> 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
>

 This type of evaluation is important.  The architecture may be
 supported in only one implementation or one may be more complete than
 another.

 Ignoring the license requirements of course.

>
>
> On Sat, Mar 21, 2020 at 1:32 AM Joel Sherrill  wrote:
>
>>
>>
>> On Fri, Mar 20, 2020 at 2:43 PM Eshan Dhawan 
>> 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
>>
>>>
>>>
>>> 
>>>
>>> Thanks
>>> -Eshan
>>> ___
>>> devel mailing list
>>> devel@rtems.org
>>> http://lists.rtems.org/mailman/listinfo/devel
>>
>> ___
>>> devel mailing list
>>> devel@rtems.org
>>> http://lists.rtems.org/mailman/listinfo/devel
>>
>> ___
>> devel mailing list
>> devel@rtems.org
>> http://lists.rtems.org/mailman/listinfo/devel
>
>
___
devel mailing list
devel@rtems.org
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Re: Sources to port fenv.h to ARM and AARCH64

[Joel Sherrill]

On Sat, Mar 21, 2020 at 3:03 AM Aditya Upadhyay  wrote:

>
>
> On Sat, 21 Mar 2020, 10:29 Eshan Dhawan,  wrote:
>
>> I went through the FreeBSD and NetBSD sources for implementation
>> In FreeBSD there is an architecture-specific implementation with
>> different header file for each architecture it supports .
>> Whereas in NetBSD there is a single fenv.h defined but each architecture
>> has its own C file to implement the functions.
>> Also FreeBSD has soft-float for ARM
>> So, I think FreeBSD would be a better option.
>>
>
> Look into this discussion on mail thread:
> https://sourceware.org/legacy-ml/newlib/2017/msg00818.html
>
> and this patch series on newlib mailing list.
>
> https://sourceware.org/legacy-ml/newlib/2019/msg00418.html .
>
> It will help to understand the fenv-stub code.
>

I am having trouble finding the implementation of any fenv method in the
NetBSD code. I only am finding the weak alias mappings. Where is an example
of the body of one of the methods in any architecture?

--joel

>
>
>
>> On Sat, Mar 21, 2020 at 2:37 AM Joel Sherrill  wrote:
>>
>>>
>>>
>>> On Fri, Mar 20, 2020 at 3:33 PM Eshan Dhawan 
>>> wrote:
>>>
 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

>>>
>>> This type of evaluation is important.  The architecture may be supported
>>> in only one implementation or one may be more complete than another.
>>>
>>> Ignoring the license requirements of course.
>>>


 On Sat, Mar 21, 2020 at 1:32 AM Joel Sherrill  wrote:

>
>
> On Fri, Mar 20, 2020 at 2:43 PM Eshan Dhawan 
> 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
>
>>
>>
>> 
>>
>> Thanks
>> -Eshan
>> ___
>> devel mailing list
>> devel@rtems.org
>> http://lists.rtems.org/mailman/listinfo/devel
>
> ___
>> devel mailing list
>> devel@rtems.org
>> http://lists.rtems.org/mailman/listinfo/devel
>
> ___
> devel mailing list
> devel@rtems.org
> http://lists.rtems.org/mailman/listinfo/devel
___
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Re: Sources to port fenv.h to ARM and AARCH64

[Aditya Upadhyay]

On Sat, 21 Mar 2020, 10:29 Eshan Dhawan,  wrote:

> I went through the FreeBSD and NetBSD sources for implementation
> In FreeBSD there is an architecture-specific implementation with different
> header file for each architecture it supports .
> Whereas in NetBSD there is a single fenv.h defined but each architecture
> has its own C file to implement the functions.
> Also FreeBSD has soft-float for ARM
> So, I think FreeBSD would be a better option.
>

Look into this discussion on mail thread:
https://sourceware.org/legacy-ml/newlib/2017/msg00818.html

and this patch series on newlib mailing list.

https://sourceware.org/legacy-ml/newlib/2019/msg00418.html .

It will help to understand the fenv-stub code.



> On Sat, Mar 21, 2020 at 2:37 AM Joel Sherrill  wrote:
>
>>
>>
>> On Fri, Mar 20, 2020 at 3:33 PM Eshan Dhawan 
>> wrote:
>>
>>> 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
>>>
>>
>> This type of evaluation is important.  The architecture may be supported
>> in only one implementation or one may be more complete than another.
>>
>> Ignoring the license requirements of course.
>>
>>>
>>>
>>> On Sat, Mar 21, 2020 at 1:32 AM Joel Sherrill  wrote:
>>>


 On Fri, Mar 20, 2020 at 2:43 PM Eshan Dhawan 
 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

>
>
> 
>
> Thanks
> -Eshan
> ___
> devel mailing list
> devel@rtems.org
> http://lists.rtems.org/mailman/listinfo/devel

 ___
> devel mailing list
> devel@rtems.org
> http://lists.rtems.org/mailman/listinfo/devel
___
devel mailing list
devel@rtems.org
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Re: Sources to port fenv.h to ARM and AARCH64

[Eshan Dhawan]

I went through the FreeBSD and NetBSD sources for implementation
In FreeBSD there is an architecture-specific implementation with different
header file for each architecture it supports .
Whereas in NetBSD there is a single fenv.h defined but each architecture
has its own C file to implement the functions.
Also FreeBSD has soft-float for ARM
So, I think FreeBSD would be a better option.

On Sat, Mar 21, 2020 at 2:37 AM Joel Sherrill  wrote:

>
>
> On Fri, Mar 20, 2020 at 3:33 PM Eshan Dhawan 
> wrote:
>
>> 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
>>
>
> This type of evaluation is important.  The architecture may be supported
> in only one implementation or one may be more complete than another.
>
> Ignoring the license requirements of course.
>
>>
>>
>> On Sat, Mar 21, 2020 at 1:32 AM Joel Sherrill  wrote:
>>
>>>
>>>
>>> On Fri, Mar 20, 2020 at 2:43 PM Eshan Dhawan 
>>> 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
>>>


 

 Thanks
 -Eshan
 ___
 devel mailing list
 devel@rtems.org
 http://lists.rtems.org/mailman/listinfo/devel
>>>
>>>
___
devel mailing list
devel@rtems.org
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Re: Sources to port fenv.h to ARM and AARCH64

[Joel Sherrill]

On Fri, Mar 20, 2020 at 3:33 PM Eshan Dhawan 
wrote:

> 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
>

This type of evaluation is important.  The architecture may be supported in
only one implementation or one may be more complete than another.

Ignoring the license requirements of course.

>
>
> On Sat, Mar 21, 2020 at 1:32 AM Joel Sherrill  wrote:
>
>>
>>
>> On Fri, Mar 20, 2020 at 2:43 PM Eshan Dhawan 
>> 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
>>
>>>
>>>
>>> 
>>>
>>> Thanks
>>> -Eshan
>>> ___
>>> devel mailing list
>>> devel@rtems.org
>>> http://lists.rtems.org/mailman/listinfo/devel
>>
>>
___
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Re: Sources to port fenv.h to ARM and AARCH64

[Eshan Dhawan]

Then I will be giving preference to FreeBSD

On Sat, Mar 21, 2020 at 2:03 AM Eshan Dhawan 
wrote:

> 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  wrote:
>
>>
>>
>> On Fri, Mar 20, 2020 at 2:43 PM Eshan Dhawan 
>> 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
>>
>>>
>>>
>>> 
>>>
>>> Thanks
>>> -Eshan
>>> ___
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>>> http://lists.rtems.org/mailman/listinfo/devel
>>
>>
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Re: 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  wrote:

>
>
> On Fri, Mar 20, 2020 at 2:43 PM Eshan Dhawan 
> 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
>
>>
>>
>> 
>>
>> Thanks
>> -Eshan
>> ___
>> devel mailing list
>> devel@rtems.org
>> http://lists.rtems.org/mailman/listinfo/devel
>
>
___
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Re: Sources to port fenv.h to ARM and AARCH64

[Joel Sherrill]

On Fri, Mar 20, 2020 at 2:43 PM Eshan Dhawan 
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

>
>
> 
>
> Thanks
> -Eshan
> ___
> devel mailing list
> devel@rtems.org
> http://lists.rtems.org/mailman/listinfo/devel
___
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