On Fri, Dec 27, 2019 at 04:07:03AM +0000, Justin Hibbits wrote: > Author: jhibbits > Date: Fri Dec 27 04:07:03 2019 > New Revision: 356113 > URL: https://svnweb.freebsd.org/changeset/base/356113 > > Log: > Eliminate the last MI difference in AT_* definitions (for powerpc). > > Summary: > As a transition aide, implement an alternative elfN_freebsd_fixup which > is called for old powerpc binaries. Similarly, add a translation to rtld to > convert old values to new ones (as expected by a new rtld). > > Translation of old<->new values is incomplete, but sufficient to allow an > installworld of a new userspace from an old one when a new kernel is > running.
Thanks! I glad you could arrange to combine flagdays. A bit of background for those following along: once upon a time we followed other platforms (Linux, Solaris, etc) and made the AT_* macro values machine-dependent and took the actual values from those platforms. We then started adding FreeBSD specific values so our lists didn't match other OSes. This lead to almost-but-no-quite identical values between architectures that didn't provide compatibility with other OSes. John Baldwin started cleaning them up and I centralized the definitions, but powerpc had some critical values that were not identical, this change fixes that with a binary flagday. Thanks to Brandon Bergren for testing and providing the missing rtld compatibility. -- Brooks
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