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

@@ -20,17 +20,23 @@
 link path=usr/share/man/man3proc/Lclearsig.3proc target=Pclearsig.3proc
 file path=usr/share/man/man3proc/Lctlfd.3proc
 link path=usr/share/man/man3proc/Ldstop.3proc target=Pstopstatus.3proc
 file path=usr/share/man/man3proc/Lfree.3proc
 link path=usr/share/man/man3proc/Lgetareg.3proc target=Pgetareg.3proc
+link path=usr/share/man/man3proc/Lgetfpregs.3proc target=Plwp_getregs.3proc
+link path=usr/share/man/man3proc/Lgetregs.3proc target=Plwp_getregs.3proc
+link path=usr/share/man/man3proc/Lgetxregs.3proc target=Plwp_getxregs.3proc
 file path=usr/share/man/man3proc/Lgrab.3proc
 file path=usr/share/man/man3proc/Lgrab_error.3proc
 link path=usr/share/man/man3proc/Lmain_stack.3proc target=Plwp_stack.3proc
 file path=usr/share/man/man3proc/Lprochandle.3proc
 file path=usr/share/man/man3proc/Lpsinfo.3proc
 link path=usr/share/man/man3proc/Lputareg.3proc target=Pgetareg.3proc
+link path=usr/share/man/man3proc/Lsetfpregs.3proc target=Plwp_getregs.3proc
+link path=usr/share/man/man3proc/Lsetregs.3proc target=Plwp_getregs.3proc
 link path=usr/share/man/man3proc/Lsetrun.3proc target=Psetrun.3proc
+link path=usr/share/man/man3proc/Lsetxregs.3proc target=Plwp_getxregs.3proc
 link path=usr/share/man/man3proc/Lstack.3proc target=Plwp_stack.3proc
 file path=usr/share/man/man3proc/Lstate.3proc
 file path=usr/share/man/man3proc/Lstatus.3proc
 link path=usr/share/man/man3proc/Lstop.3proc target=Pstopstatus.3proc
 link path=usr/share/man/man3proc/Lsync.3proc target=Psync.3proc

@@ -84,10 +90,11 @@
 link path=usr/share/man/man3proc/Plmid_to_map.3proc target=Paddr_to_map.3proc
 file path=usr/share/man/man3proc/Plookup_by_addr.3proc
 link path=usr/share/man/man3proc/Plookup_by_name.3proc \
     target=Plookup_by_addr.3proc
 link path=usr/share/man/man3proc/Plwp_alt_stack.3proc target=Plwp_stack.3proc
+link path=usr/share/man/man3proc/Plwp_freexregs.3proc target=Plwp_getxregs.3proc
 file path=usr/share/man/man3proc/Plwp_getasrs.3proc
 link path=usr/share/man/man3proc/Plwp_getfpregs.3proc target=Plwp_getregs.3proc
 file path=usr/share/man/man3proc/Plwp_getgwindows.3proc
 file path=usr/share/man/man3proc/Plwp_getname.3proc
 file path=usr/share/man/man3proc/Plwp_getpsinfo.3proc