bsd/dev/ppc/stubs.c

   1 /*
   2  * Copyright (c) 2006 Apple Computer, Inc. All Rights Reserved.
   3  *
   4  * @APPLE_LICENSE_OSREFERENCE_HEADER_START@
   5  *
   6  * This file contains Original Code and/or Modifications of Original Code
   7  * as defined in and that are subject to the Apple Public Source License
   8  * Version 2.0 (the 'License'). You may not use this file except in
   9  * compliance with the License.  The rights granted to you under the
  10  * License may not be used to create, or enable the creation or
  11  * redistribution of, unlawful or unlicensed copies of an Apple operating
  12  * system, or to circumvent, violate, or enable the circumvention or
  13  * violation of, any terms of an Apple operating system software license
  14  * agreement.
  15  *
  16  * Please obtain a copy of the License at
  17  * http://www.opensource.apple.com/apsl/ and read it before using this
  18  * file.
  19  *
  20  * The Original Code and all software distributed under the License are
  21  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  22  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  23  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  24  * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
  25  * Please see the License for the specific language governing rights and
  26  * limitations under the License.
  27  *
  28  * @APPLE_LICENSE_OSREFERENCE_HEADER_END@
  29  */
  30 /*
  31  * Copyright (c) 1997 by Apple Computer, Inc., all rights reserved
  32  * Copyright (c) 1993 NeXT Computer, Inc.
  33  *
  34  */
  35
  36 #include <sys/param.h>
  37 #include <sys/systm.h>
  38 #include <sys/ioctl.h>
  39 #include <sys/tty.h>
  40 #include <sys/conf.h>
  41 #include <sys/proc.h>
  42 #include <sys/user.h>
  43 #include <kern/thread.h>
  44 #include <kern/task.h>
  45 #include <vm/vm_map.h>
  46
  47
  48 /*
  49  * copy a null terminated string from one point to another in
  50  * the kernel address space.
  51  *   - no access checks are performed.
  52  *   - if the end of string isn't found before
  53  *     maxlen bytes are copied,  return ENAMETOOLONG,
  54  *     indicating an incomplete copy.
  55  *   - otherwise, return 0, indicating success.
  56  * the number of bytes copied is always returned in lencopied.
  57  */
  58 /* from ppc/fault_copy.c -Titan1T4 VERSION  */
  59 int
  60 copystr(const void *vfrom, void *vto, size_t maxlen, size_t *lencopied)
  61 {
  62     register unsigned l;
  63         caddr_t from, to;
  64
  65         from = vfrom;
  66         to = vto;
  67     for (l = 0; l < maxlen; l++)
  68         if ((*to++ = *from++) == '\0') {
  69             if (lencopied)
  70                 *lencopied = l + 1;
  71             return 0;
  72         }
  73     if (lencopied)
  74         *lencopied = maxlen;
  75     return ENAMETOOLONG;
  76 }
  77
  78 int copywithin(src, dst, count)
  79 void  * src, *dst;
  80 size_t count;
  81 {
  82         bcopy(src,dst,count);
  83         return 0;
  84 }
  85
  86 void *
  87 get_bsduthreadarg(thread_t th)
  88 {
  89 struct uthread *ut;
  90         ut = get_bsdthread_info(th);
  91         return((void *)(ut->uu_arg));
  92 }
  93
  94 int *
  95 get_bsduthreadrval(thread_t th)
  96 {
  97 struct uthread *ut;
  98         ut = get_bsdthread_info(th);
  99         return(&ut->uu_rval[0]);
 100 }
 101