15254 %ymm registers not restored after signal handler
15367 x86 getfpregs() summons corrupting %xmm ghosts
15333 want x86 /proc xregs support (libc_db, libproc, mdb, etc.)
15336 want libc functions for extended ucontext_t
15334 want ps_lwphandle-specific reg routines
15328 FPU_CW_INIT mistreats reserved bit
15335 i86pc fpu_subr.c isn't really platform-specific
15332 setcontext(2) isn't actually noreturn
15331 need <sys/stdalign.h>
Change-Id: I7060aa86042dfb989f77fc3323c065ea2eafa9ad
Conflicts:
    usr/src/uts/common/fs/proc/prcontrol.c
    usr/src/uts/intel/os/archdep.c
    usr/src/uts/intel/sys/ucontext.h
    usr/src/uts/intel/syscall/getcontext.c

*** 27,37 ****
  # Copyright 2018 Nexenta Systems, Inc.
  # Copyright 2016 Hans Rosenfeld <rosenfeld@grumpf.hope-2000.org>
  # Copyright 2020 Joyent, Inc.
  # Copyright 2019 Peter Tribble.
  # Copyright 2021 OmniOS Community Edition (OmniOSce) Association.
! # Copyright 2022 Oxide Computer company
  #
  
  set name=pkg.fmri value=pkg:/system/header@$(PKGVERS)
  set name=pkg.summary value="SunOS Header Files"
  set name=pkg.description \
--- 27,37 ----
  # Copyright 2018 Nexenta Systems, Inc.
  # Copyright 2016 Hans Rosenfeld <rosenfeld@grumpf.hope-2000.org>
  # Copyright 2020 Joyent, Inc.
  # Copyright 2019 Peter Tribble.
  # Copyright 2021 OmniOS Community Edition (OmniOSce) Association.
! # Copyright 2023 Oxide Computer company
  #
  
  set name=pkg.fmri value=pkg:/system/header@$(PKGVERS)
  set name=pkg.summary value="SunOS Header Files"
  set name=pkg.description \
*** 1351,1360 ****
--- 1351,1361 ----
  file path=usr/include/sys/stack.h
  file path=usr/include/sys/stat.h
  file path=usr/include/sys/stat_impl.h
  file path=usr/include/sys/statfs.h
  file path=usr/include/sys/statvfs.h
+ file path=usr/include/sys/stdalign.h
  file path=usr/include/sys/stdbool.h
  file path=usr/include/sys/stddef.h
  file path=usr/include/sys/stdint.h
  file path=usr/include/sys/stermio.h
  file path=usr/include/sys/stream.h