Sorry for being late to the party. On Wed, Feb 15, 2012 at 9:55 AM, Ian Lance Taylor <i...@google.com> wrote: > Ouch, I did not know that the EABI left this open. That seems like a > bug, because it prevents code from being interoperable. This is > precisely the kind of thing an ABI should address. Does anybody know > why they did this?
It's a matter of platform variants. There are a sufficient number of ARM use cases where the extra bytes matter (or else, there are a sufficient number of ARM vendors / customers who feel that it matters). But there's also cases like Linux where the advantages of int-sized enums outweigh the space cost. So the platform ABI supplement is supposed to decide. I believe that the Linux variant has other deviations from base than just this. The one I remember in particular is TLS models but there may be others. Please check the full range of differences before you decide which would be a better base for RTEMS. -- Thanks, Daniel
