1. Convert the tstate saved in the pcb to a pstate and test for PSTATE_PEF

   to determine if a process is using floating point. in order to avoid
   sign extending a 13 bit immediate.
2. We don't need to context switch cwp anymore, it is better to just
   fiddle the save tstate on return from traps.  See exception.s 1.10
   and 1.12.
3. Completely remove pcb_cwp.
4. Implement vmapbuf, vunmapbuf and vm_fault_quick.  Completely remove
   TODOs from vm_machdep.c (yay!).

Submitted by:	tmm (1, 3, 4)
Obtained from:	existing archs (4)

1 files changed, 1 insertions, 9 deletions

diff --git a/sys/sparc64/include/pcb.h b/sys/sparc64/include/pcb.h
index 7db380a..d5782b0 100644
--- a/sys/sparc64/include/pcb.h
+++ b/sys/sparc64/include/pcb.h
@@ -32,19 +32,11 @@
 #include <machine/fp.h>
 #include <machine/frame.h>
 
-/*
- * XXX: MAXWIN should probably be done dynamically, pcb_wscratch is therefore
- * at the end of the pcb.
- */
-#define	MAXWIN		8
-
-/* Used in pcb_fcwp to mark the wscratch stack as empty. */
-#define	PCB_CWP_EMPTY	0xff
+#define	MAXWIN	8
 
 /* NOTE: pcb_fpstate must be aligned on a 64 byte boundary. */
 struct pcb {
 	struct	fpstate	pcb_fpstate;
-	u_long	pcb_cwp;
 	u_long	pcb_fp;
 	u_long	pcb_pc;
 	u_long	pcb_y;