bsd/dev/ppc/stubs.c

   1 /*
   2  * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
   3  *
   4  * @APPLE_LICENSE_HEADER_START@
   5  *
   6  * Copyright (c) 1999-2003 Apple Computer, Inc.  All Rights Reserved.
   7  *
   8  * This file contains Original Code and/or Modifications of Original Code
   9  * as defined in and that are subject to the Apple Public Source License
  10  * Version 2.0 (the 'License'). You may not use this file except in
  11  * compliance with the License. Please obtain a copy of the License at
  12  * http://www.opensource.apple.com/apsl/ and read it before using this
  13  * file.
  14  *
  15  * The Original Code and all software distributed under the License are
  16  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  17  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  18  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  19  * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
  20  * Please see the License for the specific language governing rights and
  21  * limitations under the License.
  22  *
  23  * @APPLE_LICENSE_HEADER_END@
  24  */
  25 /*
  26  * Copyright (c) 1997 by Apple Computer, Inc., all rights reserved
  27  * Copyright (c) 1993 NeXT Computer, Inc.
  28  *
  29  */
  30
  31 #include <sys/param.h>
  32 #include <sys/systm.h>
  33 #include <sys/buf.h>
  34 #include <sys/ioctl.h>
  35 #include <sys/tty.h>
  36 #include <sys/conf.h>
  37 #include <sys/proc.h>
  38 #include <sys/user.h>
  39 #include <kern/thread.h>
  40 #include <kern/thread_act.h>
  41 #include <kern/task.h>
  42 #include <vm/vm_map.h>
  43
  44
  45 /*
  46  * copy a null terminated string from one point to another in
  47  * the kernel address space.
  48  *   - no access checks are performed.
  49  *   - if the end of string isn't found before
  50  *     maxlen bytes are copied,  return ENAMETOOLONG,
  51  *     indicating an incomplete copy.
  52  *   - otherwise, return 0, indicating success.
  53  * the number of bytes copied is always returned in lencopied.
  54  */
  55 /* from ppc/fault_copy.c -Titan1T4 VERSION  */
  56 int
  57 copystr(vfrom, vto, maxlen, lencopied)
  58     register void * vfrom, *vto;
  59     size_t maxlen, *lencopied;
  60 {
  61     register unsigned l;
  62     int error;
  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 struct unix_syscallargs {
  87         int flavor;
  88         int r3;
  89         int arg1, arg2,arg3,arg4,arg5,arg6,arg7;
  90 };
  91
  92 set_bsduthreadargs(thread_t th, void * pcb, struct unix_syscallargs * sarg)
  93 {
  94 struct uthread * ut;
  95
  96         ut = get_bsdthread_info(th);
  97         ut->uu_ar0 = (int *)pcb;
  98
  99         if (sarg->flavor)
 100         {
 101         ut->uu_arg[0] = sarg->arg1;
 102         ut->uu_arg[1] = sarg->arg2;
 103         ut->uu_arg[2] = sarg->arg3;
 104         ut->uu_arg[3] = sarg->arg4;
 105         ut->uu_arg[4] = sarg->arg5;
 106         ut->uu_arg[5] = sarg->arg6;
 107         ut->uu_arg[7] = sarg->arg7;
 108         }
 109         else
 110         {
 111         ut->uu_arg[0] = sarg->r3;
 112         ut->uu_arg[1] = sarg->arg1;
 113         ut->uu_arg[2] = sarg->arg2;
 114         ut->uu_arg[3] = sarg->arg3;
 115         ut->uu_arg[4] = sarg->arg4;
 116         ut->uu_arg[5] = sarg->arg5;
 117         ut->uu_arg[6] = sarg->arg6;
 118         ut->uu_arg[7] = sarg->arg7;
 119         }
 120
 121         return(1);
 122 }
 123
 124 void *
 125 get_bsduthreadarg(thread_t th)
 126 {
 127 struct uthread *ut;
 128         ut = get_bsdthread_info(th);
 129         return((void *)(ut->uu_arg));
 130 }
 131
 132 int *
 133 get_bsduthreadrval(thread_act_t th)
 134 {
 135 struct uthread *ut;
 136         ut = get_bsdthread_info(th);
 137         return(&ut->uu_rval[0]);
 138 }
 139