Date: Sun, 28 Sep 2025 00:51:45 GMT From: Konstantin Belousov <kib@FreeBSD.org> To: src-committers@FreeBSD.org, dev-commits-src-all@FreeBSD.org, dev-commits-src-branches@FreeBSD.org Subject: git: db0b2f107a46 - stable/14 - amd64 cpufunc.h: add rcs(), to read code selector Message-ID: <202509280051.58S0pjDU064282@gitrepo.freebsd.org>
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The branch stable/14 has been updated by kib: URL: https://cgit.FreeBSD.org/src/commit/?id=db0b2f107a46a1b01ca21054fe655132f2495e01 commit db0b2f107a46a1b01ca21054fe655132f2495e01 Author: Konstantin Belousov <kib@FreeBSD.org> AuthorDate: 2025-09-19 02:37:14 +0000 Commit: Konstantin Belousov <kib@FreeBSD.org> CommitDate: 2025-09-28 00:47:56 +0000 amd64 cpufunc.h: add rcs(), to read code selector (cherry picked from commit 50ee990e1874d6d40b8e3dc359c37e2ef2ebf477) --- 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 3a4a83821f1f..84bed6fcbcf4 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) {
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