RISC OS Open: Forum: GHC port for Risc OS

Sep 11, 2023 9:06am

Hello all!

I am very excited! Here is screenshot of my progress in porting an iconic compiler to risc os. This has to be the 20th time I’ve sat down and tried to get this to work.
Obviously, this is a screenshot of ghc not working. But I’ve ironed out most of the rts bugs. When I’ve fixed this, I need some input from someone who actually knows what they are doing on this platform.

I haven’t played with section splitting yet. It’s creating fully static executables. As a result you have to really up the size of the next slot to launch a program!

So if anyone knows anything about:

nunmap failures
risc os linking
Then you must get in contact.

Sep 11, 2023 10:01am

James Hobson (3319) 13 posts

Follow up question.
Does anyone know if RPCEmu is 26bit or 32? Does/should that make a difference?
I am targeting the raspberry pi, but I haven’t got a screen so I can’t test right now.

If anyone in Bergen, Norway has a screen they can lend to a broke student for the actual testing, it would be much appreciated!

Sep 11, 2023 10:24am

Steve Pampling (1551) 8170 posts

Does anyone know if RPCEmu is 26bit or 32?

RPCEmu is emulating hardware that can run either 26 or 32.

The OS you have installed in the emulated hardware is the decider.
If you’re asking then you either didn’t get RPCEmu from the RPCEmu website or missed the details of the pre-installed/configured bundles here on this link

RO3.71 is 26 bit env, RO5.27 is 32 bit

Sep 11, 2023 11:35am

James Hobson (3319) 13 posts

Ah lovely! I installed it maybe 2 years ago and had just forgotten. The confusion came from looking at preferences and seeing mostly 26bit processors in the list

Oct 18, 2023 11:39am

Julie Stamp (8365) 474 posts

Hi James, really nice to see you’re still hacking away at this problem :-)

It was fun making a few apps with your jhc one.

Oct 18, 2023 11:55am

James Hobson (3319) 13 posts

I will get it working at some point. I’m determined but GHC is a beast. I’ll be diving back into the RTS soon. But Haskell seems like the perfect choice for this platform. It takes far fewer people and lines of code to make libraries. Concurrency is easy without OS threads. Your code is easier to protect from bugs (which on riscos can brick your system!)

But to be honest, it’s been fun and useful without success. Much to my surprise, I’ve had to build several GHC cross compilers and port GHC to a new platform. The only reason that those tasks were easy, was from what this fruitless project has taught me!

GHC port for Risc OS

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Sep 11, 2023 9:06am James Hobson (3319) 13 posts	Hello all! I am very excited! Here is screenshot of my progress in porting an iconic compiler to risc os. This has to be the 20th time I’ve sat down and tried to get this to work. Obviously, this is a screenshot of ghc not working. But I’ve ironed out most of the rts bugs. When I’ve fixed this, I need some input from someone who actually knows what they are doing on this platform. I haven’t played with section splitting yet. It’s creating fully static executables. As a result you have to really up the size of the next slot to launch a program! So if anyone knows anything about: nunmap failures risc os linking Then you must get in contact.

Sep 11, 2023 10:01am James Hobson (3319) 13 posts	Follow up question. Does anyone know if RPCEmu is 26bit or 32? Does/should that make a difference? I am targeting the raspberry pi, but I haven’t got a screen so I can’t test right now. If anyone in Bergen, Norway has a screen they can lend to a broke student for the actual testing, it would be much appreciated!

Sep 11, 2023 10:24am Steve Pampling (1551) 8170 posts	Does anyone know if RPCEmu is 26bit or 32? RPCEmu is emulating hardware that can run either 26 or 32. The OS you have installed in the emulated hardware is the decider. If you’re asking then you either didn’t get RPCEmu from the RPCEmu website or missed the details of the pre-installed/configured bundles here on this link RO3.71 is 26 bit env, RO5.27 is 32 bit

Sep 11, 2023 11:35am James Hobson (3319) 13 posts	Ah lovely! I installed it maybe 2 years ago and had just forgotten. The confusion came from looking at preferences and seeing mostly 26bit processors in the list

Oct 18, 2023 11:39am Julie Stamp (8365) 474 posts	Hi James, really nice to see you’re still hacking away at this problem :-) It was fun making a few apps with your jhc one.

Oct 18, 2023 11:55am James Hobson (3319) 13 posts	I will get it working at some point. I’m determined but GHC is a beast. I’ll be diving back into the RTS soon. But Haskell seems like the perfect choice for this platform. It takes far fewer people and lines of code to make libraries. Concurrency is easy without OS threads. Your code is easier to protect from bugs (which on riscos can brick your system!) But to be honest, it’s been fun and useful without success. Much to my surprise, I’ve had to build several GHC cross compilers and port GHC to a new platform. The only reason that those tasks were easy, was from what this fruitless project has taught me!