1    /*
2     * Some or all of this work - Copyright (c) 2006 - 2021, Intel Corp.
3     * All rights reserved.
4     *
5     * Redistribution and use in source and binary forms, with or without modification,
6     * are permitted provided that the following conditions are met:
7     *
8     * Redistributions of source code must retain the above copyright notice,
9     * this list of conditions and the following disclaimer.
10     * Redistributions in binary form must reproduce the above copyright notice,
11     * this list of conditions and the following disclaimer in the documentation
12     * and/or other materials provided with the distribution.
13     * Neither the name of Intel Corporation nor the names of its contributors
14     * may be used to endorse or promote products derived from this software
15     * without specific prior written permission.
16     *
17     * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
18     * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19     * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20     * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
21     * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22     * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
23     * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24     * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
25     * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
26     * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27     */
28    /*
29     * Bug 214 (local-bugzilla-350):
30     *
31     *
32     * SUMMARY: crash of AcpiExec on repeated CopyObject of OpRegion
33     *
34     * Repeated duplication of an OpRegion to another
35     * dynamic OpRegion by CopyObject ASL operator causes
36     * crash of AcpiExec.
37     */
38    Method (M81C, 0, Serialized)
39    {
40        Method (M000, 1, Serialized)
41        {
42            OperationRegion (OPR0, SystemMemory, 0x00, 0x10)
43            CopyObject (Arg0, OPR0) /* \M81C.M000.OPR0 */
44        }
45
46        OperationRegion (OPR1, SystemMemory, 0x00, 0x10)
47        Method (M001, 0, Serialized)
48        {
49            Field (OPR1, ByteAcc, NoLock, WriteAsZeros)
50            {
51                RFU0,   8
52            }
53
54            RFU0 = 0x01
55            M000 (OPR1)
56            If ((RFU0 != 0x01))
57            {
58                ERR (__METHOD__, ZFFF, __LINE__, 0x00, 0x00, RFU0, 0x01)
59            }
60
61            RFU0 = 0x02
62            M000 (OPR1)
63            If ((RFU0 != 0x02))
64            {
65                ERR (__METHOD__, ZFFF, __LINE__, 0x00, 0x00, RFU0, 0x02)
66            }
67
68            RFU0 = 0x03
69            M000 (OPR1)
70            If ((RFU0 != 0x03))
71            {
72                ERR (__METHOD__, ZFFF, __LINE__, 0x00, 0x00, RFU0, 0x03)
73            }
74
75            RFU0 = 0x04
76            If ((RFU0 != 0x04))
77            {
78                ERR (__METHOD__, ZFFF, __LINE__, 0x00, 0x00, RFU0, 0x04)
79            }
80        }
81
82        CH03 (__METHOD__, 0x00, __LINE__, 0x00, 0x00)
83        M001 ()
84        CH03 (__METHOD__, 0x00, __LINE__, 0x00, 0x00)
85    }
86