This is a more robust method for obtaining the availability of vx.
Since this variable may be checked frequently I've also now
padded it so that it will be in its own cache line.
I've kept the other check (in hash/crc32) the same for now until
I can figure out the best way to update it.
Updates #15403.
Change-Id: I74eed651afc6f6a9c5fa3b88fa6a2b0c9ecf5875
Reviewed-on: https://go-review.googlesource.com/31149
Reviewed-by: Austin Clements <austin@google.com>
archauxv no longer does anything on 386, so remove it.
Change-Id: I94545238e40fa6a6832a7c3b40aedfc6c1f6a97b
Reviewed-on: https://go-review.googlesource.com/22063
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
Currently several different Linux architectures have separate copies
of the auxv parser. Bring these all together into a single copy of the
parser that calls out to a per-arch handler for each tag/value pair.
This is in preparation for handling common auxv tags in one place.
For #9993.
Change-Id: Iceebc3afad6b4133b70fca7003561ae370445c10
Reviewed-on: https://go-review.googlesource.com/22061
Run-TryBot: Brad Fitzpatrick <bradfitz@golang.org>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Michael Hudson-Doyle <michael.hudson@canonical.com>
Michael Munday
Shenghou Ma
Austin Clements