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Homebrew PS2, PSP & PS3 Development Discussions
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Gary13579
Joined: 15 Aug 2005
Posts: 93
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 Posted: Sun Jan 31, 2010 7:20 pm Post subject: Calling SDK functions from within uCLinux |
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Long time no post :).
Rambling around in my room, found the old PSP, and was curious what happened in the scene. From what I can tell, nothing.
Anyway, I successfully setup a cross compiler, and got applications running on Linux on the PSP (albeit no C++... sad :( ).
My question is, how can I link the PSPSDK libraries against programs compiled to run in Linux? I am using mipsel-linux-gcc, not the standard psp-gcc. What is the difference? Is psp-gcc just a frontend for the former, which does some extra, or...? |
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Jim
Joined: 02 Jul 2005
Posts: 487
Location: Sydney
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| Posted: Sun Jan 31, 2010 9:04 pm Post subject: |
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| Quote: | | My question is, how can I link the PSPSDK libraries against programs compiled to run in Linux? |
In general, you can't. Most Linux source code/programs are not immediately suitable for compilation/execution on PSP.
Usually there's at least a little bit, and often quite a lot of work needs to be done.
Jim
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Gary13579
Joined: 15 Aug 2005
Posts: 93
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| Posted: Mon Feb 01, 2010 7:10 am Post subject: |
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| Jim wrote: | | Quote: | | My question is, how can I link the PSPSDK libraries against programs compiled to run in Linux? |
In general, you can't. Most Linux source code/programs are not immediately suitable for compilation/execution on PSP.
Usually there's at least a little bit, and often quite a lot of work needs to be done.
Jim |
I'm not talking about porting an application written on my PC to the PSP... I've got uCLinux running on my PSP, and have already written a simple hello world for it.
Is it really impossible/at least very hard to call PSP functions from within uCLinux? I'd have assumed it would be relatively easy, since the PSP's firmware should still be loaded, underneath uCLinux.
Edit: aha, the OSK must somehow be pulling joypad data, which would come from sce* functions? Looking into that now... |
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cloudhunter
Joined: 17 Aug 2006
Posts: 86
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| Posted: Mon Feb 01, 2010 8:05 am Post subject: |
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| Gary13579 wrote: | | Is it really impossible/at least very hard to call PSP functions from within uCLinux? I'd have assumed it would be relatively easy, since the PSP's firmware should still be loaded, underneath uCLinux. |
I'm afraid that as soon as uCLinux starts up, it wipes the firmware out of memory entirely and runs by itself. It just relies on the PSPSDK/firmware to initialise a few things first.
As such there is no way of calling the functions.
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Gary13579
Joined: 15 Aug 2005
Posts: 93
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| Posted: Mon Feb 01, 2010 8:13 am Post subject: |
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| cloudhunter wrote: | | Gary13579 wrote: | | Is it really impossible/at least very hard to call PSP functions from within uCLinux? I'd have assumed it would be relatively easy, since the PSP's firmware should still be loaded, underneath uCLinux. |
I'm afraid that as soon as uCLinux starts up, it wipes the firmware out of memory entirely and runs by itself. It just relies on the PSPSDK/firmware to initialise a few things first.
As such there is no way of calling the functions. |
Well, from what I can see, the kernel creates a wrapper from the IPL input commands to a /dev/input. Is there a list of the IPL functions anywhere? Poked around in the SDK and couldn't find any. |
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