[9front] Go on ARM64

[9front] Go on ARM64

[Philip Silva]

Hi!

Since I have now a MNT Reform and there was still no Go I tried my luck with porting: https://github.com/psilva261/go-arm64.plan9 

I've tested compiling from linux/amd64 (Go 1.19.4) and 9front/amd64 (Go 1.18.3), that both works. But since there's no bootstrap.rc, it can be compiled like this:

echo go1.20 > VERSION # bootstrap.bash produces something like go1.20-53289fad60
cd src
GOROOT=/tmp/go-arm64.plan9-arm64.plan9 GOOS=plan9 GOARCH=arm64 make.rc
cd .. ; mv bin/plan9_arm64/* bin/

Greetings, Philip

Re: [9front] Go on ARM64

[Jacob Moody]

On 12/28/22 10:29, Philip Silva wrote:
> Hi!
> 
> Since I have now a MNT Reform and there was still no Go I tried my luck with porting: https://github.com/psilva261/go-arm64.plan9 
> 
> I've tested compiling from linux/amd64 (Go 1.19.4) and 9front/amd64 (Go 1.18.3), that both works. But since there's no bootstrap.rc, it can be compiled like this:
> 
> echo go1.20 > VERSION # bootstrap.bash produces something like go1.20-53289fad60
> cd src
> GOROOT=/tmp/go-arm64.plan9-arm64.plan9 GOOS=plan9 GOARCH=arm64 make.rc
> cd .. ; mv bin/plan9_arm64/* bin/
> 
> Greetings, Philip
> 

Cool!

I recall there being a bounty for this:

https://inbox.vuxu.org/9front/CAJeB+LTSZ4CdFgv=p94AM0tYQPi_H_CxMYmYA9GXLtbKbcr=Jw@mail.gmail.com/

Granted it's a bit dusty, but perhaps you can brush it off and cash it in. If you can't, we can probably
strike it from the FQA bounty list.

Thanks,
moody

Re: [9front] Go on ARM64

[ori]

Quoth Philip Silva <philip.silva@protonmail.com>:
> Hi!
> 
> Since I have now a MNT Reform and there was still no Go I tried my luck with porting: https://github.com/psilva261/go-arm64.plan9 
> 
> I've tested compiling from linux/amd64 (Go 1.19.4) and 9front/amd64 (Go 1.18.3), that both works. But since there's no bootstrap.rc, it can be compiled like this:
> 
> echo go1.20 > VERSION # bootstrap.bash produces something like go1.20-53289fad60
> cd src
> GOROOT=/tmp/go-arm64.plan9-arm64.plan9 GOOS=plan9 GOARCH=arm64 make.rc
> cd .. ; mv bin/plan9_arm64/* bin/
> 
> Greetings, Philip
> 

next step -- let's get it upstream.

Re: [9front] Go on ARM64

[Philip Silva]

> Granted it's a bit dusty, but perhaps you can brush it off and cash it in. If you can't, we can probably
strike it from the FQA bounty list.

That would be something!

> next step -- let's get it upstream.

Definitely, there are (at least) 2 lines of debugging left-over and I need to check the tests, but I can create a PR then in the next days

Re: [9front] Go on ARM64

[Fazlul Shahriar]

> > next step -- let's get it upstream.
>
> Definitely, there are (at least) 2 lines of debugging left-over and I need to check the tests, but I can create a PR then in the next days

It's a bit more complicated than sending a PR. You need to create a
proposal and set up a builder. See:
https://github.com/golang/go/wiki/PortingPolicy

Re: [9front] Go on ARM64

[Philip Silva]

Wow this looks complicated, also because there's no 9legacy/arm64 I think. I wonder if Sourcehut CI is an option. Also 2 maintainers are needed. Would anyone be interested?

Actually in the code I also found 2 tricky issues, one with panic/recover and one with reflection in templates. At least there are test cases, this might be fixable in a day or take much longer. Although it seems other ports were added incrementally actually

Re: [9front] Go on ARM64

[Fazlul Shahriar]

> Wow this looks complicated, also because there's no 9legacy/arm64 I think. I wonder if Sourcehut CI is an option. Also 2 maintainers are needed. Would anyone be interested?

I think it's 2 maintainers for each GOOS and GOARCH separately, not
for each combination. We already have 2 maintainers for plan9.

For the builder, I think you need a dedicated hardware or VM.
Instructions here: https://github.com/golang/go/wiki/DashboardBuilders
The plan9/arm builder seems to be running on a few dedicated Raspberry
Pis: https://github.com/golang/go/issues/49338#issuecomment-960685367

Re: [9front] Go on ARM64

[ori]

Quoth Philip Silva <philip.silva@protonmail.com>:
> Wow this looks complicated, also because there's no 9legacy/arm64 I think. I wonder if Sourcehut CI is an option. Also 2 maintainers are needed. Would anyone be interested?
> 
> Actually in the code I also found 2 tricky issues, one with panic/recover and one with reflection in templates. At least there are test cases, this might be fixable in a day or take much longer. Although it seems other ports were added incrementally actually
> 

I'm happy enough to figure out hosting if needed.

Re: [9front] Go on ARM64

[Philip Silva]

Awesome! I've also created a proposal on the issue tracker https://github.com/golang/go/issues/57540

------- Original Message -------
On Saturday, December 31st, 2022 at 03:42, ori@eigenstate.org <ori@eigenstate.org> wrote:

> I'm happy enough to figure out hosting if needed.

Re: [9front] Go on ARM64

[william]

I couldn't get it to compile. I cloned the repo in /usr/glenda/code and changed the path


term% GOROOT=/usr/glenda/code/go-arm64.plan9 GOOS=plan9 GOARCH=arm64 make.rc
go: not found
go: not found
ERROR: Cannot find /usr/glenda/go1.4/bin/go.
Set $GOROOT_BOOTSTRAP to a working Go tree >= Go 1.17.13.

Not sure why its looking for go if i'm compiling for first time

does this matter below?

echo go1.20 > VERSION. I have it in both in the following directories.

/usr/glenda/code/go-arm64.plan9/VERSION
/usr/glenda/code/go-arm64.plan9/src/VERSION



Quoth Philip Silva <philip.silva@protonmail.com>:
> Hi!
> 
> Since I have now a MNT Reform and there was still no Go I tried my luck with porting: https://github.com/psilva261/go-arm64.plan9 
> 
> I've tested compiling from linux/amd64 (Go 1.19.4) and 9front/amd64 (Go 1.18.3), that both works. But since there's no bootstrap.rc, it can be compiled like this:
> 
> echo go1.20 > VERSION # bootstrap.bash produces something like go1.20-53289fad60
> cd src
> GOROOT=/tmp/go-arm64.plan9-arm64.plan9 GOOS=plan9 GOARCH=arm64 make.rc
> cd .. ; mv bin/plan9_arm64/* bin/
> 
> Greetings, Philip
> 
> 

Re: [9front] Go on ARM64

[Aaron Bieber]

On Fri, Dec 30, 2022, at 7:49 PM, william@thinktankworkspaces.com wrote:
> I couldn't get it to compile. I cloned the repo in /usr/glenda/code and 
> changed the path
>
>
> term% GOROOT=/usr/glenda/code/go-arm64.plan9 GOOS=plan9 GOARCH=arm64 make.rc
> go: not found
> go: not found
> ERROR: Cannot find /usr/glenda/go1.4/bin/go.
> Set $GOROOT_BOOTSTRAP to a working Go tree >= Go 1.17.13.
>
> Not sure why its looking for go if i'm compiling for first time
>
> does this matter below?

You need to bootstrap it with an existing go compiler. This is the case on any OS since go is self hosted.

>
> echo go1.20 > VERSION. I have it in both in the following directories.
>
> /usr/glenda/code/go-arm64.plan9/VERSION
> /usr/glenda/code/go-arm64.plan9/src/VERSION
>
>
>
> Quoth Philip Silva <philip.silva@protonmail.com>:
>> Hi!
>> 
>> Since I have now a MNT Reform and there was still no Go I tried my luck with porting: https://github.com/psilva261/go-arm64.plan9 
>> 
>> I've tested compiling from linux/amd64 (Go 1.19.4) and 9front/amd64 (Go 1.18.3), that both works. But since there's no bootstrap.rc, it can be compiled like this:
>> 
>> echo go1.20 > VERSION # bootstrap.bash produces something like go1.20-53289fad60
>> cd src
>> GOROOT=/tmp/go-arm64.plan9-arm64.plan9 GOOS=plan9 GOARCH=arm64 make.rc
>> cd .. ; mv bin/plan9_arm64/* bin/
>> 
>> Greetings, Philip
>> 
>>