On 8/1/11 9:56 AM, Kumar Gala wrote: > > On Aug 1, 2011, at 9:53 AM, Mark Hatle wrote: > >> On 8/1/11 9:26 AM, Kumar Gala wrote: >>> Some of powerpc's dont support the fsqrt[s] instructions so we need an >>> implementation of the library functions for those processors. >>> >>> Signed-off-by: Kumar Gala <[email protected]> >>> --- >>> .../recipes-core/eglibc/eglibc-2.13/ppc-sqrt.patch | 538 >>> ++++++++++++++++++++ >>> meta/recipes-core/eglibc/eglibc_2.13.bb | 3 +- >>> 2 files changed, 540 insertions(+), 1 deletions(-) >>> create mode 100644 meta/recipes-core/eglibc/eglibc-2.13/ppc-sqrt.patch >> >> I'm a bit confused by this patch. Why is gcc even generating (or trying to) >> the >> fsqrt instructions on cores that don't have it? Did someone optimize gcc so >> that it always requires fsqrt on PPC? (This is horribly broken behavior >> BTW...) >> >> As for the patch, I don't object.. but this just looks like the wrong >> solution >> to me.. >> > > Mark, the issue isn't w/gcc but glibc itself. It will use inline asm of the > 'fsqrt[s]' instruction. This we need a different implementation of the math > lib functions for these cores.
Ahh, I see. That makes a lot more sense. --Mark > - k > _______________________________________________ > Openembedded-core mailing list > [email protected] > http://lists.linuxtogo.org/cgi-bin/mailman/listinfo/openembedded-core _______________________________________________ Openembedded-core mailing list [email protected] http://lists.linuxtogo.org/cgi-bin/mailman/listinfo/openembedded-core
