Import of uvm from NetBSD. Some local changes, some code disabled

1 files changed, 72 insertions, 0 deletions

diff --git a/sys/uvm/uvm_user.c b/sys/uvm/uvm_user.c
new file mode 100644
index 00000000000..e3c328298b7
--- /dev/null
+++ b/sys/uvm/uvm_user.c
@@ -0,0 +1,72 @@
+/*	$NetBSD: uvm_user.c,v 1.6 1998/10/11 23:18:21 chuck Exp $	*/
+
+/*
+ * XXXCDC: "ROUGH DRAFT" QUALITY UVM PRE-RELEASE FILE!   
+ *	   >>>USE AT YOUR OWN RISK, WORK IS NOT FINISHED<<<
+ */
+/*
+ *
+ * Copyright (c) 1997 Charles D. Cranor and Washington University.
+ * All rights reserved.
+ *
+ * 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 Charles D. Cranor and
+ *      Washington University.
+ * 4. The name of the author may not be used to endorse or promote products
+ *    derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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: Id: uvm_user.c,v 1.1.2.1 1997/08/14 19:10:41 chuck Exp
+ */
+
+/*
+ * uvm_user.c: high level uvm_allocate/uvm_deallocate interface into vm.
+ */
+
+
+#include <sys/param.h>
+#include <sys/systm.h>
+#include <sys/proc.h>
+
+#include <vm/vm.h>
+#include <uvm/uvm.h>
+
+/*
+ * uvm_deallocate: deallocate memory (unmap)
+ */
+
+int
+uvm_deallocate(map, start, size)
+	vm_map_t map;
+	vaddr_t start;
+	vsize_t size;
+{
+
+	if (map == NULL)
+		panic("uvm_deallocate with null map");
+
+	if (size == (vaddr_t) 0)
+		return (KERN_SUCCESS);
+
+	return(uvm_unmap(map, trunc_page(start), round_page(start+size)));
+
+}