tree aa29800de70e017c2f1511146b49c82c3154719c
parent 39bc44bb0e03514e8d92f8c0ceb0b5901e27a485
author Ryan Prichard <rprichard@google.com> 1542881654 -0800
committer Ryan Prichard <rprichard@google.com> 1543886084 -0800

Use shared globals so getauxval works earlier

Make getauxval() work in .preinit_array. It still won't be usable for
ifuncs unless we can guarantee that the __loader_shared_globals relocation
is resolved before the ifunc calls [__bionic_]getauxval.

Define __bionic_getauxval for use in replacing calls to
KernelArgumentBlock::getauxval, which doesn't (and sometimes isn't allowed
to) access TLS variables like errno.

Bug: http://b/25751302
Test: bionic unit tests
Change-Id: I461feeaed7f43cfa2a2b6c34147194f0df82b516