[Midnightbsd-cvs] [MidnightBSD/src] fd1ea5: restore ABI compatibility for pre-10.x binaries.

[Konstantin Belousov]

  Branch: refs/heads/feature/umtx10
  Home:   https://github.com/MidnightBSD/src
  Commit: fd1ea5e84e579880f462b409d9cc38b09ddda2e1
      https://github.com/MidnightBSD/src/commit/fd1ea5e84e579880f462b409d9cc38b09ddda2e1
  Author: Konstantin Belousov <kib at FreeBSD.org>
  Date:   2023-09-27 (Wed, 27 Sep 2023)

  Changed paths:
    M sys/compat/freebsd32/syscalls.master
    M sys/kern/kern_umtx.c
    M sys/kern/syscalls.master
    M sys/sys/_umtx.h
    M sys/sys/umtx.h

  Log Message:
  -----------
  restore ABI compatibility for pre-10.x binaries.

It restores _umtx_lock() and _umtx_unlock() syscalls, and UMTX_OP_LOCK/
UMTX_OP_UNLOCK umtx_op(2) operations. UMUTEX_ERROR_CHECK flag is left
out for now, I do not think it makes a difference.

Obtained from: FreeBSD 2fb281fa02d34b31b25e949415cfda4549b5aa6b