Re: RISC-V Support for GNUstep

Hi Lars,
ah, now I get your point which is indeed a point and not a big area :)
Maybe the title was misleading because too broad.

You want RISC V support specifically for libobc2 (and clang) where I don't know if it exists or how mature it is.

> Am 07.10.2021 um 23:43 schrieb [email protected]:
> 
> Hi Nikolaus,
> 
> 
> I am especially interested in ObjC 2 support, hence I’d like to see https://github.com/gnustep/libobjc2 being ported (and it needs to, as I understand it). 
> 
> I guess you’re satisfied with GCC’s runtime which you need for your legacy hardware (Sharp Zaurus and the like). Since the GCC ObjC runtime contains no assembler it probably works out of the box (I have no experience here).

I haven't as well, it is just the observation that libgnustep-base was obviously successfully compiled for Debian Sid.

https://packages.debian.org/sid/riscv64/libobjc4/filelist

A quick look into https://github.com/gnustep/libobjc2 seems to indicate that there is a need for a objc_msgSend.riscv.S in parallel to https://github.com/gnustep/libobjc2/blob/master/objc_msgSend.arm.S (ca. 200 lines of assembler code).
Everything else is C, C++ or Obj-C code.

Best regards,
Nikolaus

> 
> 
> Kind regards,
> 
> 	Lars
> 
>> Am 07.10.2021 um 22:20 schrieb H. Nikolaus Schaller <[email protected]>:
>> 
>> Hi Lars,
>> I think besides objc-compiler support there is nothing special needed for RISC V (or other processor architectures like i386, arm, mips, ppc).
>> 
>> If you look at
>> 
>> https://packages.debian.org/sid/gnustep-base-runtime
>> https://packages.debian.org/sid/libgnustep-base1.27
>> 
>> you will see that there is experimental riscv64 support in Debian Sid, e.g. compiled binary libs:
>> 
>> https://packages.debian.org/sid/riscv64/libgnustep-base1.27/filelist
>> 
>> So IMHO there is no gap or anything special to do. Like for most other user-space code (unless you want to use architecture specific features like vector instruction sets).
>> 
>> What I can't judge is how buggy basic objective c support is.
>> 
>> Best regards,
>> Nikolaus
>> 
>> 
>>> Am 07.10.2021 um 19:19 schrieb [email protected]:
>>> 
>>> Hi David,
>>> 
>>> 
>>> well, I didn’t consider if you (and others) are aware of RISC-V. Therefore I post some basic, introductory links regarding RISC-V FYI now:
>>> 
>>> https://riscv.org
>>> 
>>> https://en.wikipedia.org/wiki/RISC-V
>>> 
>>> 
>>> kind regards,
>>> 
>>> 	Lars
>>> 
>>> 
>>>> Am 07.10.2021 um 19:09 schrieb David Wetzel <[email protected]>:
>>>> 
>>>> Hi!
>>>> 
>>>> Did I miss something regarding risc?
>>>> I thought many companies are now looking to go to ARM?
>>>> Also on their servers. 
>>>> 
>>>> Cheers,
>>>> 
>>>> David
>>>> 
>>>> Von meinem iPhone gesendet
>>>> 
>>>>> Am 2021-10-07 um 12:53 schrieb [email protected]:
>>>>> 
>>>>> Hi fellow GNUsteppers,
>>>>> 
>>>>> 
>>>>> I am thinking about purchasing a HiFive Unmatched https://www.sifive.com/boards/hifive-unmatched board for helping to port GNUstep and especially the GNUstep ObjC runtime to RISC-V.
>>>>> 
>>> 
>> 
>