aarch64: TLS register checkpoint/restore implementation by Christopher Covington.
Signed-off-by: Alexander Kartashov <alekskartashov@parallels.com>
Signed-off-by: Christopher Covington <cov@codeaurora.org>
Reviewed-by: Christopher Covington <cov@codeaurora.org>
Signed-off-by: Pavel Emelyanov <xemul@parallels.com>