From 16ac529a8c7cef030b0f786c163227c4c33c43f3 Mon Sep 17 00:00:00 2001
From: downsj <downsj@openbsd.org>
Date: Wed, 5 Feb 1997 17:30:23 +0000
Subject: [PATCH] Pull in some of the changes from NetBSD's revision 1.63:
 thorpej Sat Feb  1 23:55:54 PST 1997 ... - Eliminate some unnecessary cpu/mmu
 checks, based on what CPUs   the kernel was compiled for. - Add some comments
 about possible further optimization. ...

---
 sys/arch/hp300/hp300/locore.s | 20 ++++++++++++++++----
 1 file changed, 16 insertions(+), 4 deletions(-)

diff --git a/sys/arch/hp300/hp300/locore.s b/sys/arch/hp300/hp300/locore.s
index 735ee0ec998..28ce12e5e2a 100644
--- a/sys/arch/hp300/hp300/locore.s
+++ b/sys/arch/hp300/hp300/locore.s
@@ -1,5 +1,5 @@
-/*	$OpenBSD: locore.s,v 1.9 1997/02/03 15:54:43 deraadt Exp $	*/
-/*	$NetBSD: locore.s,v 1.62 1996/11/06 20:19:30 cgd Exp $	*/
+/*	$OpenBSD: locore.s,v 1.10 1997/02/05 17:30:23 downsj Exp $	*/
+/*	$NetBSD: locore.s,v 1.63 1997/02/02 07:55:52 thorpej Exp $	*/
 
 /*
  * Copyright (c) 1997 Theo de Raadt
@@ -133,8 +133,10 @@ _buserr:
 	jbsr	_longjmp		|  longjmp(nofault)
 Lberr:
 #if defined(M68040)
+#if defined(M68020) || defined(M68030)
 	cmpl	#MMU_68040,_mmutype	| 68040?
 	jne	_addrerr		| no, skip
+#endif
 	clrl	sp@-			| stack adjust count
 	moveml	#0xFFFF,sp@-		| save user registers
 	movl	usp,a0			| save the user SP
@@ -168,8 +170,10 @@ _addrerr:
 	movl	a0,sp@(FR_SP)		|   in the savearea
 	lea	sp@(FR_HW),a1		| grab base of HW berr frame
 #if defined(M68040)
+#if defined(M68020) || defined(M68030)
 	cmpl	#MMU_68040,_mmutype	| 68040?
 	jne	Lbenot040		| no, skip
+#endif
 	movl	a1@(8),sp@-		| yes, push fault address
 	clrl	sp@-			| no SSW for address fault
 	jra	Lisaerr			| go deal with it
@@ -217,8 +221,10 @@ Lbe10:
 	cmpw	#12,d0			| address error vector?
 	jeq	Lisaerr			| yes, go to it
 #if defined(M68K_MMU_MOTOROLA)
+#if defined(M68K_MMU_HP)
 	tstl	_mmutype		| HP MMU?
 	jeq	Lbehpmmu		| yes, skip
+#endif
 	movl	d1,a0			| fault address
 	movl	sp@,d0			| function code from ssw
 	btst	#8,d0			| data fault?
@@ -290,7 +296,7 @@ Lstkadj:
 /*
  * FP exceptions.
  */
-_fpfline:
+_fpfline:		/* XXXthorpej - candidate for vector patch */
 #if defined(M68040)
 	cmpw	#0x202c,sp@(6)		| format type 2?
 	jne	_illinst		| no, not an FP emulation
@@ -307,7 +313,7 @@ _fpfline:
 	jra	_illinst
 #endif
 
-_fpunsupp:
+_fpunsupp:		/* XXXthorpej - candidate for vector patch */
 #if defined(M68040)
 	cmpl	#MMU_68040,_mmutype	| 68040?
 	jne	_illinst		| no, treat as illinst
@@ -1461,8 +1467,10 @@ Lswnochg:
 
 	lea	tmpstk,sp		| now goto a tmp stack for NMI
 #if defined(M68040)
+#if defined(M68020) || defined(M68030)
 	cmpl	#MMU_68040,_mmutype	| 68040?
 	jne	Lres1a			| no, skip
+#endif
 	.word	0xf518			| yes, pflusha
 	movl	a1@(PCB_USTP),d0	| get USTP
 	moveq	#PGSHIFT,d1
@@ -1474,8 +1482,10 @@ Lres1a:
 	movl	#CACHE_CLR,d0
 	movc	d0,cacr			| invalidate cache(s)
 #if defined(M68K_MMU_MOTOROLA)
+#if defined(M68K_MMU_HP)
 	tstl	_mmutype		| HP MMU?
 	jeq	Lhpmmu4			| yes, skip
+#endif
 	pflusha				| flush entire TLB
 	movl	a1@(PCB_USTP),d0	| get USTP
 	moveq	#PGSHIFT,d1
@@ -1505,8 +1515,10 @@ Lcxswdone:
 	tstb	a0@			| null state frame?
 	jeq	Lresfprest		| yes, easy
 #if defined(M68040)
+#if defined(M68020) || defined(M68030)
 	cmpl	#MMU_68040,_mmutype	| 68040?
 	jne	Lresnot040		| no, skip
+#endif
 	clrl	sp@-			| yes...
 	frestore sp@+			| ...magic!
 Lresnot040:
-- 
2.20.1