From 1081a88e07dd6ddb0782ee020be628bb9c9f02fc Mon Sep 17 00:00:00 2001
From: downsj <downsj@openbsd.org>
Date: Mon, 10 Feb 1997 11:39:25 +0000
Subject: [PATCH] Completely untested mvme68k changes for
 copypage/zeropage/mappedcopy. Doesn't really support MAPPEDCOPY.

---
 sys/arch/mvme68k/mvme68k/locore.s | 34 +------------------------------
 sys/arch/mvme68k/mvme68k/mem.c    | 14 ++++++-------
 sys/arch/mvme68k/mvme68k/pmap.c   |  6 +++---
 3 files changed, 11 insertions(+), 43 deletions(-)

diff --git a/sys/arch/mvme68k/mvme68k/locore.s b/sys/arch/mvme68k/mvme68k/locore.s
index db28e3cbeb4..5e9120da872 100644
--- a/sys/arch/mvme68k/mvme68k/locore.s
+++ b/sys/arch/mvme68k/mvme68k/locore.s
@@ -1,4 +1,4 @@
-/*	$OpenBSD: locore.s,v 1.13 1997/02/08 10:50:36 deraadt Exp $ */
+/*	$OpenBSD: locore.s,v 1.14 1997/02/10 11:39:25 downsj Exp $ */
 
 /*
  * Copyright (c) 1995 Theo de Raadt
@@ -1120,38 +1120,6 @@ Ldorte:
 #define ALTENTRY(name, rname) 	ENTRY(name)
 #endif
 
-/*
- * copypage(fromaddr, toaddr)
- *
- * Optimized version of bcopy for a single page-aligned NBPG byte copy.
- */
-ENTRY(copypage)
-	movl	sp@(4),a0		| source address
-	movl	sp@(8),a1		| destination address
-	movl	#NBPG/32,d0		| number of 32 byte chunks
-#if defined(M68040)
-	cmpl	#MMU_68040,_mmutype	| 68040?
-	jne	Lmlloop			| no, use movl
-Lm16loop:
-	.long	0xf6209000		| move16 a0@+,a1@+
-	.long	0xf6209000		| move16 a0@+,a1@+
-	subql	#1,d0
-	jne	Lm16loop
-	rts
-#endif
-Lmlloop:
-	movl	a0@+,a1@+
-	movl	a0@+,a1@+
-	movl	a0@+,a1@+
-	movl	a0@+,a1@+
-	movl	a0@+,a1@+
-	movl	a0@+,a1@+
-	movl	a0@+,a1@+
-	movl	a0@+,a1@+
-	subql	#1,d0
-	jne	Lmlloop
-	rts
-
 /*
  * non-local gotos
  */
diff --git a/sys/arch/mvme68k/mvme68k/mem.c b/sys/arch/mvme68k/mvme68k/mem.c
index fa4798c3ef1..49c9b1c49f8 100644
--- a/sys/arch/mvme68k/mvme68k/mem.c
+++ b/sys/arch/mvme68k/mvme68k/mem.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: mem.c,v 1.4 1996/04/28 10:59:03 deraadt Exp $ */
+/*	$OpenBSD: mem.c,v 1.5 1997/02/10 11:39:26 downsj Exp $ */
 
 /*
  * Copyright (c) 1995 Theo de Raadt
@@ -85,7 +85,7 @@
 #include <vm/vm.h>
 
 extern u_int lowram;
-caddr_t zeropage;
+static caddr_t devzeropage;
 
 /*ARGSUSED*/
 int
@@ -193,18 +193,18 @@ mmrw(dev, uio, flags)
 			 * XXX on the hp300 we already know where there
 			 * is a global zeroed page, the null segment table.
 			 */
-			if (zeropage == NULL) {
+			if (devzeropage == NULL) {
 #if CLBYTES == NBPG
 				extern caddr_t Segtabzero;
-				zeropage = Segtabzero;
+				devzeropage = Segtabzero;
 #else
-				zeropage = (caddr_t)
+				devzeropage = (caddr_t)
 				    malloc(CLBYTES, M_TEMP, M_WAITOK);
-				bzero(zeropage, CLBYTES);
+				bzero(devzeropage, CLBYTES);
 #endif
 			}
 			c = min(iov->iov_len, CLBYTES);
-			error = uiomove(zeropage, c, uio);
+			error = uiomove(devzeropage, c, uio);
 			continue;
 
 		default:
diff --git a/sys/arch/mvme68k/mvme68k/pmap.c b/sys/arch/mvme68k/mvme68k/pmap.c
index 7bb6820cb12..f3df1b600e8 100644
--- a/sys/arch/mvme68k/mvme68k/pmap.c
+++ b/sys/arch/mvme68k/mvme68k/pmap.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: pmap.c,v 1.5 1996/04/28 10:59:04 deraadt Exp $ */
+/*	$OpenBSD: pmap.c,v 1.6 1997/02/10 11:39:26 downsj Exp $ */
 
 /* 
  * Copyright (c) 1995 Theo de Raadt
@@ -1569,7 +1569,7 @@ pmap_zero_page(phys)
 #endif
 	kva = (vm_offset_t) CADDR1;
 	pmap_enter(pmap_kernel(), kva, phys, VM_PROT_READ|VM_PROT_WRITE, TRUE);
-	bzero((caddr_t)kva, NBPG);
+	zeropage((caddr_t)kva);
 	pmap_remove_mapping(pmap_kernel(), kva, PT_ENTRY_NULL,
 			    PRM_TFLUSH|PRM_CFLUSH);
 }
@@ -1604,7 +1604,7 @@ pmap_copy_page(src, dst)
 	pmap_enter(pmap_kernel(), dkva, dst, VM_PROT_READ|VM_PROT_WRITE, TRUE);
 	copypage((caddr_t)skva, (caddr_t)dkva);
 	/* CADDR1 and CADDR2 are virtually contiguous */
-	pmap_remove(pmap_kernel(), skva, skva+2*NBPG);
+	pmap_remove(pmap_kernel(), skva, skva + (2 * NBPG));
 }
 
 /*
-- 
2.20.1