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You're supposed to write those functions in assembly language.

Given we're talking about a single-processor target (at least for N900/Pandora - other ARM device mileage may vary) they can probably be relatively trivially stubbed in C.

Thanks, i knew there was some stuff like that in there and rbelmont is working on it. I guess it's not all been given a c alternative yet in this version.

edit: oops i'm slow. I'll take a look at the code later and see if i can do so.

Wouldn't it be enough to define NO_THREAD_COOPERATIVE in the SDL makefile?

BTW, you'll probably be disappointed by the speed of MAME on Cortex-A8.

That is completely unrelated to inlined assembler functions. Apart from the fact that the NO_THREAD_COOPERATIVE define is history now...

Just use osdmini/miniwork.c instead of the one that comes with the SDL port and you should be good.

Actually there's code to that effect if SDLMAME_NOASM is defined, and it looks like that will be defined if NOASM is defined (i'm guessing that's what DEFS += -DSDLMAME_NOASM does), but i don't see where NOASM should be defined. Perhaps a (commented out by default) line is missing from the user config section of the make files?

The user config section of the makefile is deprecated. Pass parameters directly on the command line (or define them in your environment with .bashrc or whatever).

% make NOASM=1

Ah, thanks.

Perhaps it should be removed or a comment noting that fact added, then. Anyway, presumably there's a reference if the makefile itself isn't it. where can a reference of valid parameters be found?

With the noasm flag, it compiles and links for the armel target. It also compiles (as it did before) and runs (with working output now) on the x86 SDK, but veeeerrry slowly.

I'm still waiting for delivery of my N900 to do on-device testing, but this seems like a good start!

What bit of the project should i focus on to start optimizing it? If you give me a specific task and context, i can probably contribute; i just don't have any general understanding of the project as a whole.