bsd/dev/ppc/stubs.c

   1 /*
   2  * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
   3  *
   4  * @APPLE_LICENSE_HEADER_START@
   5  *
   6  * The contents of this file constitute Original Code as defined in and
   7  * are subject to the Apple Public Source License Version 1.1 (the
   8  * "License").  You may not use this file except in compliance with the
   9  * License.  Please obtain a copy of the License at
  10  * http://www.apple.com/publicsource and read it before using this file.
  11  *
  12  * This Original Code and all software distributed under the License are
  13  * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  14  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  15  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  16  * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT.  Please see the
  17  * License for the specific language governing rights and limitations
  18  * under the License.
  19  *
  20  * @APPLE_LICENSE_HEADER_END@
  21  */
  22 /*
  23  * Copyright (c) 1997 by Apple Computer, Inc., all rights reserved
  24  * Copyright (c) 1993 NeXT Computer, Inc.
  25  *
  26  */
  27
  28 #include <sys/param.h>
  29 #include <sys/systm.h>
  30 #include <sys/buf.h>
  31 #include <sys/ioctl.h>
  32 #include <sys/tty.h>
  33 #include <sys/conf.h>
  34 #include <sys/proc.h>
  35 #include <sys/user.h>
  36 #include <kern/thread.h>
  37 #include <kern/thread_act.h>
  38 #include <kern/task.h>
  39 #include <vm/vm_map.h>
  40
  41
  42 /*
  43  * copy a null terminated string from one point to another in
  44  * the kernel address space.
  45  *   - no access checks are performed.
  46  *   - if the end of string isn't found before
  47  *     maxlen bytes are copied,  return ENAMETOOLONG,
  48  *     indicating an incomplete copy.
  49  *   - otherwise, return 0, indicating success.
  50  * the number of bytes copied is always returned in lencopied.
  51  */
  52 /* from ppc/fault_copy.c -Titan1T4 VERSION  */
  53 int
  54 copystr(vfrom, vto, maxlen, lencopied)
  55     register void * vfrom, *vto;
  56     size_t maxlen, *lencopied;
  57 {
  58     register unsigned l;
  59     int error;
  60 caddr_t from, to;
  61
  62         from = vfrom;
  63         to = vto;
  64     for (l = 0; l < maxlen; l++)
  65         if ((*to++ = *from++) == '\0') {
  66             if (lencopied)
  67                 *lencopied = l + 1;
  68             return 0;
  69         }
  70     if (lencopied)
  71         *lencopied = maxlen;
  72     return ENAMETOOLONG;
  73 }
  74
  75 int copywithin(src, dst, count)
  76 void  * src, *dst;
  77 size_t count;
  78 {
  79         bcopy(src,dst,count);
  80         return 0;
  81 }
  82
  83 struct unix_syscallargs {
  84         int flavor;
  85         int r3;
  86         int arg1, arg2,arg3,arg4,arg5,arg6,arg7;
  87 };
  88
  89 set_bsduthreadargs(thread_t th, void * pcb, struct unix_syscallargs * sarg)
  90 {
  91 struct uthread * ut;
  92
  93         ut = get_bsdthread_info(th);
  94         ut->uu_ar0 = (int *)pcb;
  95
  96         if (sarg->flavor)
  97         {
  98         ut->uu_arg[0] = sarg->arg1;
  99         ut->uu_arg[1] = sarg->arg2;
 100         ut->uu_arg[2] = sarg->arg3;
 101         ut->uu_arg[3] = sarg->arg4;
 102         ut->uu_arg[4] = sarg->arg5;
 103         ut->uu_arg[5] = sarg->arg6;
 104         ut->uu_arg[7] = sarg->arg7;
 105         }
 106         else
 107         {
 108         ut->uu_arg[0] = sarg->r3;
 109         ut->uu_arg[1] = sarg->arg1;
 110         ut->uu_arg[2] = sarg->arg2;
 111         ut->uu_arg[3] = sarg->arg3;
 112         ut->uu_arg[4] = sarg->arg4;
 113         ut->uu_arg[5] = sarg->arg5;
 114         ut->uu_arg[6] = sarg->arg6;
 115         ut->uu_arg[7] = sarg->arg7;
 116         }
 117
 118         return(1);
 119 }
 120
 121 void *
 122 get_bsduthreadarg(thread_t th)
 123 {
 124 struct uthread *ut;
 125         ut = get_bsdthread_info(th);
 126         return((void *)(ut->uu_arg));
 127 }
 128
 129 int *
 130 get_bsduthreadrval(thread_act_t th)
 131 {
 132 struct uthread *ut;
 133         ut = get_bsdthread_info(th);
 134         return(&ut->uu_rval[0]);
 135 }
 136