1 files changed, 87 insertions, 0 deletions
diff --git a/release/sysinstall/uc_kmem.c b/release/sysinstall/uc_kmem.c
new file mode 100644
index 000000000000..e0df87209a69
--- /dev/null
+++ b/release/sysinstall/uc_kmem.c
@@ -0,0 +1,87 @@
+/***************************************************
+ * file: userconfig/uc_kmem.c
+ *
+ * Copyright (c) 1996 Eric L. Hernes (erich@rrnet.com)
+ * 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. The name of the author may not be used to endorse or promote products
+ *    derived from this software withough 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.
+ *
+ * $Id$
+ */
+
+#include <sys/types.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <a.out.h>
+
+#include <stdio.h>
+
+#include "uc_main.h"
+
+/* translate a kv pointer to user space */
+/* malloc()-ing if we aren't mmaped */
+u_int
+kv_to_u(struct kernel *kp, u_int adr, u_int size){
+  u_int tadr;
+  if(!kp->incore){
+    struct exec *ep;
+    ep=(struct exec *)kp->core;
+    tadr=(u_int)((adr - ep->a_entry + (N_DATOFF(*ep) - ep->a_text))+kp->core);
+  } else {
+    caddr_t ptr;
+    ptr = malloc(size);
+    lseek(kp->fd, adr, SEEK_SET);
+    read(kp->fd, ptr, size);
+    tadr=(u_int)ptr;
+  }
+  return(tadr);
+}
+
+/* dereference a pointer to kernel space */
+u_int
+kv_dref_p(struct kernel *kp, u_int adr){
+  u_int tadr;
+  if(!kp->incore){
+    struct exec *ep;
+    ep=(struct exec *)kp->core;
+    tadr=*(u_int*)((adr - ep->a_entry + (N_DATOFF(*ep) - ep->a_text))+kp->core);
+  } else {
+    lseek(kp->fd, adr, SEEK_SET);
+    read(kp->fd, &tadr, sizeof(tadr));
+  }
+  return(tadr);
+}
+
+/* deref a pointer to kernel text */
+u_int
+kv_dref_t(struct kernel *kp, u_int adr){
+  u_int tadr;
+  if(!kp->incore){
+    struct exec *ep;
+    ep=(struct exec *)kp->core;
+    tadr=*(u_int*)((adr - ep->a_entry) + N_TXTOFF(*ep) + (u_int)kp->core);
+  } else {
+    lseek(kp->fd, adr, SEEK_SET);
+    read(kp->fd, &tadr, sizeof(tadr));
+  }
+  return(tadr);
+}
+
+/* end of userconfig/uc_kmem.c */