[LITMUS^RT] staging updated

[Björn Brandenburg]

On 21.09.2012, at 19:54, Christopher Kenna <cjk at cs.unc.edu> wrote:

> My changes were pretty trivial and the merge looks right to me. It
> also compiled on amd64, so I removed the prop/ branch I made
> yesterday. Glenn's changes don't work well on ARM. I get this error
> when I try and compile for the ARM:
> 
> itmus/built-in.o: In function `_frac':
> /home/cjk/git/unc/litmus-rt/include/litmus/fpmath.h:35: undefined
> reference to `__aeabi_ldivmod'
> /home/cjk/git/unc/litmus-rt/include/litmus/fpmath.h:35: undefined
> reference to `__aeabi_ldivmod'
> make: *** [.tmp_vmlinux1] Error 1
> 
> I understand not everyone uses this board, so they may not be able to
> test on it. Glenn, we should talk about fixing this (in person or on
> the list). I'm not familiar with this fpmath.h file, and it's not
> critical to get it working at the moment, so I'm not going to try and
> figure out what the issue is. Maybe there is something easy I can try?

Yeah... didn't think of that. Many ARM CPUs do not have a division instruction. It has to be emulated in software.

- Björn