-/* $OpenBSD: copy.s,v 1.4 1997/01/13 11:51:11 niklas Exp $ */
-/* $NetBSD: copy.s,v 1.24 1996/07/20 01:53:42 jtc Exp $ */
+/* $OpenBSD: copy.s,v 1.5 1997/02/10 11:11:50 downsj Exp $ */
+/* $NetBSD: copy.s,v 1.25 1997/02/02 06:50:06 thorpej Exp $ */
/*-
* Copyright (c) 1994, 1995 Charles Hannum.
movb a0@-,a1@- | copy bytes
dbf d0,Lbccbbloop | til done
rts
+
+/*
+ * 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 | destiniation address
+ movl #NBPG/32-1,d0 | number of 32 byte chunks - 1
+#if defined(M68040) || defined(M68060)
+#if defined(M68020) || defined(M68030)
+ cmpl #CPU_68030,_cputype | 68030 or less?
+ jle Lmlloop | yes, use movl
+#endif /* M68020 || M68030 */
+Lm16loop:
+ .long 0xf6209000 | move16 a0@+,a1@+
+ .long 0xf6209000 | move16 a0@+,a1@+
+ dbf d0,Lm16loop
+ rts
+#endif /* M68040 || M68060 */
+#if defined(M68020) || defined(M68030)
+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@+
+ dbf d0,Lmlloop
+#endif /* M68020 || M68030 */
+ rts
+
+/*
+ * zeropage(addr)
+ *
+ * Optimized version of bzero for a single page-aligned NBPG byte zero.
+ */
+ENTRY(zeropage)
+ movl sp@(4),a0 | dest address
+ movl #NBPG/32-1,d0 | number of 32 byte chunks - 1
+ movq #0,d1
+Lzloop:
+ movl d1,a0@+
+ movl d1,a0@+
+ movl d1,a0@+
+ movl d1,a0@+
+ movl d1,a0@+
+ movl d1,a0@+
+ movl d1,a0@+
+ movl d1,a0@+
+ dbf d0,Lzloop
+ rts
--- /dev/null
+/* $OpenBSD: mappedcopy.c,v 1.1 1997/02/10 11:11:51 downsj Exp $ */
+/* $NetBSD: mappedcopy.c,v 1.1 1997/02/02 06:54:10 thorpej Exp $ */
+
+/*
+ * XXX This doesn't work yet. Soon. --thorpej@netbsd.org
+ */
+
+/*
+ * Copyright (c) 1988 University of Utah.
+ * Copyright (c) 1982, 1986, 1990, 1993
+ * The Regents of the University of California. All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * the Systems Programming Group of the University of Utah Computer
+ * Science Department.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ * must display the following acknowledgement:
+ * This product includes software developed by the University of
+ * California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * from: Utah $Hdr: vm_machdep.c 1.21 91/04/06$
+ *
+ * @(#)vm_machdep.c 8.6 (Berkeley) 1/12/94
+ */
+
+#include <sys/param.h>
+#include <sys/systm.h>
+#include <sys/proc.h>
+
+#include <vm/vm.h>
+#include <vm/vm_kern.h>
+
+#include <machine/cpu.h>
+
+#ifdef DEBUG
+#define MDB_COPYIN 0x01
+#define MDB_COPYOUT 0x02
+int mappedcopydebug = 0;
+
+int mappedcopyincount;
+int mappedcopyoutcount;
+#endif
+
+/*
+ * This turns off mappedcopy by default. Ports initialize the
+ * threshold in initcpu().
+ */
+u_int mappedcopysize = -1;
+
+/*
+ * N.B. Both of these routines assume PAGE_SIZE == NBPG.
+ */
+
+int
+mappedcopyin(fromp, top, count)
+ register void *fromp, *top;
+ register size_t count;
+{
+ register vm_offset_t kva, upa;
+ register size_t len;
+ int off, alignable;
+ pmap_t upmap;
+ extern caddr_t CADDR1;
+
+#ifdef DEBUG
+ if (mappedcopydebug & MDB_COPYIN)
+ printf("mappedcopyin(%p, %p, %lu), pid %d\n",
+ fromp, top, (u_long)count, curproc->p_pid);
+ mappedcopyincount++;
+#endif
+
+ kva = (vm_offset_t)CADDR1;
+ off = (int)((u_long)fromp & PAGE_MASK);
+ alignable = (off == ((u_long)top & PAGE_MASK));
+ upmap = vm_map_pmap(&curproc->p_vmspace->vm_map);
+ while (count > 0) {
+ /*
+ * First access of a page, use fubyte to make sure
+ * page is faulted in and read access allowed.
+ */
+ if (fubyte(fromp) == -1)
+ return (EFAULT);
+ /*
+ * Map in the page and bcopy data in from it
+ */
+ upa = pmap_extract(upmap, trunc_page(fromp));
+ if (upa == 0)
+ panic("mappedcopyin: null page frame");
+ len = min(count, (PAGE_SIZE - off));
+ pmap_enter(pmap_kernel(), kva, upa, VM_PROT_READ, TRUE);
+ if (len == PAGE_SIZE && alignable && off == 0)
+ copypage((caddr_t)kva, top);
+ else
+ bcopy((void *)(kva + off), top, len);
+ fromp += len;
+ top += len;
+ count -= len;
+ off = 0;
+ }
+ pmap_remove(pmap_kernel(), kva, kva + PAGE_SIZE);
+ return (0);
+}
+
+int
+mappedcopyout(fromp, top, count)
+ register void *fromp, *top;
+ register size_t count;
+{
+ register vm_offset_t kva, upa;
+ register size_t len;
+ int off, alignable;
+ pmap_t upmap;
+ extern caddr_t CADDR2;
+
+#ifdef DEBUG
+ if (mappedcopydebug & MDB_COPYOUT)
+ printf("mappedcopyout(%p, %p, %lu), pid %d\n",
+ fromp, top, (u_long)count, curproc->p_pid);
+ mappedcopyoutcount++;
+#endif
+
+ kva = (vm_offset_t) CADDR2;
+ off = (int)((u_long)top & PAGE_MASK);
+ alignable = (off == ((u_long)fromp & PAGE_MASK));
+ upmap = vm_map_pmap(&curproc->p_vmspace->vm_map);
+ while (count > 0) {
+ /*
+ * First access of a page, use subyte to make sure
+ * page is faulted in and write access allowed.
+ */
+ if (subyte(top, *((char *)fromp)) == -1)
+ return (EFAULT);
+ /*
+ * Map in the page and bcopy data out to it
+ */
+ upa = pmap_extract(upmap, trunc_page(top));
+ if (upa == 0)
+ panic("mappedcopyout: null page frame");
+ len = min(count, (PAGE_SIZE - off));
+ pmap_enter(pmap_kernel(), kva, upa,
+ VM_PROT_READ|VM_PROT_WRITE, TRUE);
+ if (len == PAGE_SIZE && alignable && off == 0)
+ copypage(fromp, (caddr_t)kva);
+ else
+ bcopy(fromp, (void *)(kva + off), len);
+ fromp += len;
+ top += len;
+ count -= len;
+ off = 0;
+ }
+ pmap_remove(pmap_kernel(), kva, kva + PAGE_SIZE);
+ return (0);
+}
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