Le 14/11/2010 20:06, Wolfgang Denk a écrit :
Alright, then I think we should document how we comply, or do not comply, with GNU EABI / AAPCS (maybe a README.arm that people could read
Register use is documented in the top level README.
My bad: I'd missed that one because I always go straight to the doc/ directory for documentation of this kind -- the root README I never read apart from the first few pages, and I would not have thought it to give this level of detail.
BTW, a fix to this ./README is in order as GOT is not used any more with ELF ARM relocation, so r9 is not needed for this anymore...
... and even though I don't like the idea of reserving a register for gd, since we must for the moment, then using the (now available) r9 register would be *more* 'EABI/AAPCS-compliant' than using r8 (as I said, one could think of this use of r9 as 'our AAPCS variant').
Amicalement,