usr/src/cmd/dtrace/test/tst/common/pointers/err.InvalidAddress5.d

   1 /*
   2  * CDDL HEADER START
   3  *
   4  * The contents of this file are subject to the terms of the
   5  * Common Development and Distribution License (the "License").
   6  * You may not use this file except in compliance with the License.
   7  *
   8  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
   9  * or http://www.opensolaris.org/os/licensing.
  10  * See the License for the specific language governing permissions
  11  * and limitations under the License.
  12  *
  13  * When distributing Covered Code, include this CDDL HEADER in each
  14  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
  15  * If applicable, add the following below this CDDL HEADER, with the
  16  * fields enclosed by brackets "[]" replaced with your own identifying
  17  * information: Portions Copyright [yyyy] [name of copyright owner]
  18  *
  19  * CDDL HEADER END
  20  */
  21
  22 /*
  23  * Copyright 2006 Sun Microsystems, Inc.  All rights reserved.
  24  * Use is subject to license terms.
  25  */
  26
  27 /*
  28  * Copyright (c) 2012 by Delphix. All rights reserved.
  29  */
  30
  31 /*
  32  * ASSERTION:
  33  * Using integer arithmetic providing a non-aligned memory address will throw
  34  * a runtime error.
  35  *
  36  * SECTION: Pointers and Arrays/Generic Pointers
  37  */
  38
  39 #pragma D option quiet
  40
  41 #if defined(__i386) || defined(__amd64)
  42 #define __x86 1
  43 #endif
  44
  45 int array[2];
  46 char *ptr;
  47 int *p;
  48 int *q;
  49 int *r;
  50
  51 BEGIN
  52 {
  53         array[0] = 0x12345678;
  54         array[1] = 0xabcdefff;
  55
  56         ptr = (char *) &array[0];
  57
  58         p = (int *) (ptr);
  59         q = (int *) (ptr + 2);
  60         r = (int *) (ptr + 3);
  61
  62         printf("*p: 0x%x\n", *p);
  63         printf("*q: 0x%x\n", *q);
  64         printf("*r: 0x%x\n", *r);
  65
  66         /*
  67          * On x86, the above unaligned memory accesses are allowed and should
  68          * not result in the ERROR probe firing.
  69          */
  70 #ifdef __x86
  71         exit(1);
  72 #else
  73         exit(0);
  74 #endif
  75 }
  76
  77 ERROR
  78 {
  79 #ifdef __x86
  80         exit(0);
  81 #else
  82         exit(1);
  83 #endif
  84 }