The branch main has been updated by kib: URL: https://cgit.FreeBSD.org/src/commit/?id=50ee990e1874d6d40b8e3dc359c37e2ef2ebf477
commit 50ee990e1874d6d40b8e3dc359c37e2ef2ebf477 Author: Konstantin Belousov <[email protected]> AuthorDate: 2025-09-19 02:37:14 +0000 Commit: Konstantin Belousov <[email protected]> CommitDate: 2025-09-24 13:02:27 +0000 amd64 cpufunc.h: add rcs(), to read code selector Reviewed by: markj Sponsored by: The FreeBSD Foundation MFC after: 1 week Differential revision: https://reviews.freebsd.org/D52607 --- sys/amd64/include/cpufunc.h | 9 +++++++++ 1 file changed, 9 insertions(+) diff --git a/sys/amd64/include/cpufunc.h b/sys/amd64/include/cpufunc.h index e6c9f47ea261..9a4c82275a99 100644 --- a/sys/amd64/include/cpufunc.h +++ b/sys/amd64/include/cpufunc.h @@ -572,6 +572,15 @@ rss(void) return (sel); } +static __inline u_short +rcs(void) +{ + u_short sel; + + __asm __volatile("movw %%cs,%0" : "=rm" (sel)); + return (sel); +} + static __inline void load_ds(u_short sel) {
