nasm should infer .text but does not for windows: https://bugzilla.nasm.us/show_bug.cgi?id=3392451 Change-Id: Ib195465e5f33405f5ff61c4cf88aa2a72640cacb
subpel functions will be moved in another patch. Change-Id: Idb2e049bad0b9b32ac42cc7731cd6903de2826ce