17c478bd9Sstevel@tonic-gate /******************************************************************************
27c478bd9Sstevel@tonic-gate *
37c478bd9Sstevel@tonic-gate * Module Name: exnames - interpreter/scanner name load/execute
47c478bd9Sstevel@tonic-gate *
57c478bd9Sstevel@tonic-gate *****************************************************************************/
67c478bd9Sstevel@tonic-gate
7*35786f68SRobert Mustacchi /******************************************************************************
8*35786f68SRobert Mustacchi *
9*35786f68SRobert Mustacchi * 1. Copyright Notice
10*35786f68SRobert Mustacchi *
11*35786f68SRobert Mustacchi * Some or all of this work - Copyright (c) 1999 - 2018, Intel Corp.
127c478bd9Sstevel@tonic-gate * All rights reserved.
137c478bd9Sstevel@tonic-gate *
14*35786f68SRobert Mustacchi * 2. License
15*35786f68SRobert Mustacchi *
16*35786f68SRobert Mustacchi * 2.1. This is your license from Intel Corp. under its intellectual property
17*35786f68SRobert Mustacchi * rights. You may have additional license terms from the party that provided
18*35786f68SRobert Mustacchi * you this software, covering your right to use that party's intellectual
19*35786f68SRobert Mustacchi * property rights.
20*35786f68SRobert Mustacchi *
21*35786f68SRobert Mustacchi * 2.2. Intel grants, free of charge, to any person ("Licensee") obtaining a
22*35786f68SRobert Mustacchi * copy of the source code appearing in this file ("Covered Code") an
23*35786f68SRobert Mustacchi * irrevocable, perpetual, worldwide license under Intel's copyrights in the
24*35786f68SRobert Mustacchi * base code distributed originally by Intel ("Original Intel Code") to copy,
25*35786f68SRobert Mustacchi * make derivatives, distribute, use and display any portion of the Covered
26*35786f68SRobert Mustacchi * Code in any form, with the right to sublicense such rights; and
27*35786f68SRobert Mustacchi *
28*35786f68SRobert Mustacchi * 2.3. Intel grants Licensee a non-exclusive and non-transferable patent
29*35786f68SRobert Mustacchi * license (with the right to sublicense), under only those claims of Intel
30*35786f68SRobert Mustacchi * patents that are infringed by the Original Intel Code, to make, use, sell,
31*35786f68SRobert Mustacchi * offer to sell, and import the Covered Code and derivative works thereof
32*35786f68SRobert Mustacchi * solely to the minimum extent necessary to exercise the above copyright
33*35786f68SRobert Mustacchi * license, and in no event shall the patent license extend to any additions
34*35786f68SRobert Mustacchi * to or modifications of the Original Intel Code. No other license or right
35*35786f68SRobert Mustacchi * is granted directly or by implication, estoppel or otherwise;
36*35786f68SRobert Mustacchi *
37*35786f68SRobert Mustacchi * The above copyright and patent license is granted only if the following
38*35786f68SRobert Mustacchi * conditions are met:
39*35786f68SRobert Mustacchi *
40*35786f68SRobert Mustacchi * 3. Conditions
41*35786f68SRobert Mustacchi *
42*35786f68SRobert Mustacchi * 3.1. Redistribution of Source with Rights to Further Distribute Source.
43*35786f68SRobert Mustacchi * Redistribution of source code of any substantial portion of the Covered
44*35786f68SRobert Mustacchi * Code or modification with rights to further distribute source must include
45*35786f68SRobert Mustacchi * the above Copyright Notice, the above License, this list of Conditions,
46*35786f68SRobert Mustacchi * and the following Disclaimer and Export Compliance provision. In addition,
47*35786f68SRobert Mustacchi * Licensee must cause all Covered Code to which Licensee contributes to
48*35786f68SRobert Mustacchi * contain a file documenting the changes Licensee made to create that Covered
49*35786f68SRobert Mustacchi * Code and the date of any change. Licensee must include in that file the
50*35786f68SRobert Mustacchi * documentation of any changes made by any predecessor Licensee. Licensee
51*35786f68SRobert Mustacchi * must include a prominent statement that the modification is derived,
52*35786f68SRobert Mustacchi * directly or indirectly, from Original Intel Code.
53*35786f68SRobert Mustacchi *
54*35786f68SRobert Mustacchi * 3.2. Redistribution of Source with no Rights to Further Distribute Source.
55*35786f68SRobert Mustacchi * Redistribution of source code of any substantial portion of the Covered
56*35786f68SRobert Mustacchi * Code or modification without rights to further distribute source must
57*35786f68SRobert Mustacchi * include the following Disclaimer and Export Compliance provision in the
58*35786f68SRobert Mustacchi * documentation and/or other materials provided with distribution. In
59*35786f68SRobert Mustacchi * addition, Licensee may not authorize further sublicense of source of any
60*35786f68SRobert Mustacchi * portion of the Covered Code, and must include terms to the effect that the
61*35786f68SRobert Mustacchi * license from Licensee to its licensee is limited to the intellectual
62*35786f68SRobert Mustacchi * property embodied in the software Licensee provides to its licensee, and
63*35786f68SRobert Mustacchi * not to intellectual property embodied in modifications its licensee may
64*35786f68SRobert Mustacchi * make.
65*35786f68SRobert Mustacchi *
66*35786f68SRobert Mustacchi * 3.3. Redistribution of Executable. Redistribution in executable form of any
67*35786f68SRobert Mustacchi * substantial portion of the Covered Code or modification must reproduce the
68*35786f68SRobert Mustacchi * above Copyright Notice, and the following Disclaimer and Export Compliance
69*35786f68SRobert Mustacchi * provision in the documentation and/or other materials provided with the
70*35786f68SRobert Mustacchi * distribution.
71*35786f68SRobert Mustacchi *
72*35786f68SRobert Mustacchi * 3.4. Intel retains all right, title, and interest in and to the Original
73*35786f68SRobert Mustacchi * Intel Code.
74*35786f68SRobert Mustacchi *
75*35786f68SRobert Mustacchi * 3.5. Neither the name Intel nor any other trademark owned or controlled by
76*35786f68SRobert Mustacchi * Intel shall be used in advertising or otherwise to promote the sale, use or
77*35786f68SRobert Mustacchi * other dealings in products derived from or relating to the Covered Code
78*35786f68SRobert Mustacchi * without prior written authorization from Intel.
79*35786f68SRobert Mustacchi *
80*35786f68SRobert Mustacchi * 4. Disclaimer and Export Compliance
81*35786f68SRobert Mustacchi *
82*35786f68SRobert Mustacchi * 4.1. INTEL MAKES NO WARRANTY OF ANY KIND REGARDING ANY SOFTWARE PROVIDED
83*35786f68SRobert Mustacchi * HERE. ANY SOFTWARE ORIGINATING FROM INTEL OR DERIVED FROM INTEL SOFTWARE
84*35786f68SRobert Mustacchi * IS PROVIDED "AS IS," AND INTEL WILL NOT PROVIDE ANY SUPPORT, ASSISTANCE,
85*35786f68SRobert Mustacchi * INSTALLATION, TRAINING OR OTHER SERVICES. INTEL WILL NOT PROVIDE ANY
86*35786f68SRobert Mustacchi * UPDATES, ENHANCEMENTS OR EXTENSIONS. INTEL SPECIFICALLY DISCLAIMS ANY
87*35786f68SRobert Mustacchi * IMPLIED WARRANTIES OF MERCHANTABILITY, NONINFRINGEMENT AND FITNESS FOR A
88*35786f68SRobert Mustacchi * PARTICULAR PURPOSE.
89*35786f68SRobert Mustacchi *
90*35786f68SRobert Mustacchi * 4.2. IN NO EVENT SHALL INTEL HAVE ANY LIABILITY TO LICENSEE, ITS LICENSEES
91*35786f68SRobert Mustacchi * OR ANY OTHER THIRD PARTY, FOR ANY LOST PROFITS, LOST DATA, LOSS OF USE OR
92*35786f68SRobert Mustacchi * COSTS OF PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES, OR FOR ANY INDIRECT,
93*35786f68SRobert Mustacchi * SPECIAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THIS AGREEMENT, UNDER ANY
94*35786f68SRobert Mustacchi * CAUSE OF ACTION OR THEORY OF LIABILITY, AND IRRESPECTIVE OF WHETHER INTEL
95*35786f68SRobert Mustacchi * HAS ADVANCE NOTICE OF THE POSSIBILITY OF SUCH DAMAGES. THESE LIMITATIONS
96*35786f68SRobert Mustacchi * SHALL APPLY NOTWITHSTANDING THE FAILURE OF THE ESSENTIAL PURPOSE OF ANY
97*35786f68SRobert Mustacchi * LIMITED REMEDY.
98*35786f68SRobert Mustacchi *
99*35786f68SRobert Mustacchi * 4.3. Licensee shall not export, either directly or indirectly, any of this
100*35786f68SRobert Mustacchi * software or system incorporating such software without first obtaining any
101*35786f68SRobert Mustacchi * required license or other approval from the U. S. Department of Commerce or
102*35786f68SRobert Mustacchi * any other agency or department of the United States Government. In the
103*35786f68SRobert Mustacchi * event Licensee exports any such software from the United States or
104*35786f68SRobert Mustacchi * re-exports any such software from a foreign destination, Licensee shall
105*35786f68SRobert Mustacchi * ensure that the distribution and export/re-export of the software is in
106*35786f68SRobert Mustacchi * compliance with all laws, regulations, orders, or other restrictions of the
107*35786f68SRobert Mustacchi * U.S. Export Administration Regulations. Licensee agrees that neither it nor
108*35786f68SRobert Mustacchi * any of its subsidiaries will export/re-export any technical data, process,
109*35786f68SRobert Mustacchi * software, or service, directly or indirectly, to any country for which the
110*35786f68SRobert Mustacchi * United States government or any agency thereof requires an export license,
111*35786f68SRobert Mustacchi * other governmental approval, or letter of assurance, without first obtaining
112*35786f68SRobert Mustacchi * such license, approval or letter.
113*35786f68SRobert Mustacchi *
114*35786f68SRobert Mustacchi *****************************************************************************
115*35786f68SRobert Mustacchi *
116*35786f68SRobert Mustacchi * Alternatively, you may choose to be licensed under the terms of the
117*35786f68SRobert Mustacchi * following license:
118*35786f68SRobert Mustacchi *
11926f3cdf0SGordon Ross * Redistribution and use in source and binary forms, with or without
12026f3cdf0SGordon Ross * modification, are permitted provided that the following conditions
12126f3cdf0SGordon Ross * are met:
12226f3cdf0SGordon Ross * 1. Redistributions of source code must retain the above copyright
12326f3cdf0SGordon Ross * notice, this list of conditions, and the following disclaimer,
12426f3cdf0SGordon Ross * without modification.
12526f3cdf0SGordon Ross * 2. Redistributions in binary form must reproduce at minimum a disclaimer
12626f3cdf0SGordon Ross * substantially similar to the "NO WARRANTY" disclaimer below
12726f3cdf0SGordon Ross * ("Disclaimer") and any redistribution must be conditioned upon
12826f3cdf0SGordon Ross * including a substantially similar Disclaimer requirement for further
12926f3cdf0SGordon Ross * binary redistribution.
13026f3cdf0SGordon Ross * 3. Neither the names of the above-listed copyright holders nor the names
13126f3cdf0SGordon Ross * of any contributors may be used to endorse or promote products derived
13226f3cdf0SGordon Ross * from this software without specific prior written permission.
13326f3cdf0SGordon Ross *
13426f3cdf0SGordon Ross * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
13526f3cdf0SGordon Ross * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
136*35786f68SRobert Mustacchi * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
13726f3cdf0SGordon Ross * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
138*35786f68SRobert Mustacchi * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
139*35786f68SRobert Mustacchi * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
140*35786f68SRobert Mustacchi * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
141*35786f68SRobert Mustacchi * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
142*35786f68SRobert Mustacchi * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
143*35786f68SRobert Mustacchi * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
144*35786f68SRobert Mustacchi * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
145*35786f68SRobert Mustacchi *
146*35786f68SRobert Mustacchi * Alternatively, you may choose to be licensed under the terms of the
147*35786f68SRobert Mustacchi * GNU General Public License ("GPL") version 2 as published by the Free
148*35786f68SRobert Mustacchi * Software Foundation.
149*35786f68SRobert Mustacchi *
150*35786f68SRobert Mustacchi *****************************************************************************/
1517c478bd9Sstevel@tonic-gate
1527c478bd9Sstevel@tonic-gate #include "acpi.h"
153aa2aa9a6SDana Myers #include "accommon.h"
1547c478bd9Sstevel@tonic-gate #include "acinterp.h"
1557c478bd9Sstevel@tonic-gate #include "amlcode.h"
1567c478bd9Sstevel@tonic-gate
1577c478bd9Sstevel@tonic-gate #define _COMPONENT ACPI_EXECUTER
1587c478bd9Sstevel@tonic-gate ACPI_MODULE_NAME ("exnames")
1597c478bd9Sstevel@tonic-gate
1607c478bd9Sstevel@tonic-gate /* Local prototypes */
1617c478bd9Sstevel@tonic-gate
1627c478bd9Sstevel@tonic-gate static char *
1637c478bd9Sstevel@tonic-gate AcpiExAllocateNameString (
1647c478bd9Sstevel@tonic-gate UINT32 PrefixCount,
1657c478bd9Sstevel@tonic-gate UINT32 NumNameSegs);
1667c478bd9Sstevel@tonic-gate
1677c478bd9Sstevel@tonic-gate static ACPI_STATUS
1687c478bd9Sstevel@tonic-gate AcpiExNameSegment (
1697c478bd9Sstevel@tonic-gate UINT8 **InAmlAddress,
1707c478bd9Sstevel@tonic-gate char *NameString);
1717c478bd9Sstevel@tonic-gate
1727c478bd9Sstevel@tonic-gate
1737c478bd9Sstevel@tonic-gate /*******************************************************************************
1747c478bd9Sstevel@tonic-gate *
1757c478bd9Sstevel@tonic-gate * FUNCTION: AcpiExAllocateNameString
1767c478bd9Sstevel@tonic-gate *
1777c478bd9Sstevel@tonic-gate * PARAMETERS: PrefixCount - Count of parent levels. Special cases:
1787c478bd9Sstevel@tonic-gate * (-1)==root, 0==none
1797c478bd9Sstevel@tonic-gate * NumNameSegs - count of 4-character name segments
1807c478bd9Sstevel@tonic-gate *
1817b1019a6SJerry Jelinek * RETURN: A pointer to the allocated string segment. This segment must
1827c478bd9Sstevel@tonic-gate * be deleted by the caller.
1837c478bd9Sstevel@tonic-gate *
1847c478bd9Sstevel@tonic-gate * DESCRIPTION: Allocate a buffer for a name string. Ensure allocated name
1857c478bd9Sstevel@tonic-gate * string is long enough, and set up prefix if any.
1867c478bd9Sstevel@tonic-gate *
1877c478bd9Sstevel@tonic-gate ******************************************************************************/
1887c478bd9Sstevel@tonic-gate
1897c478bd9Sstevel@tonic-gate static char *
AcpiExAllocateNameString(UINT32 PrefixCount,UINT32 NumNameSegs)1907c478bd9Sstevel@tonic-gate AcpiExAllocateNameString (
1917c478bd9Sstevel@tonic-gate UINT32 PrefixCount,
1927c478bd9Sstevel@tonic-gate UINT32 NumNameSegs)
1937c478bd9Sstevel@tonic-gate {
1947c478bd9Sstevel@tonic-gate char *TempPtr;
1957c478bd9Sstevel@tonic-gate char *NameString;
1967c478bd9Sstevel@tonic-gate UINT32 SizeNeeded;
1977c478bd9Sstevel@tonic-gate
19827f7c583Smyers ACPI_FUNCTION_TRACE (ExAllocateNameString);
1997c478bd9Sstevel@tonic-gate
2007c478bd9Sstevel@tonic-gate
2017c478bd9Sstevel@tonic-gate /*
2027c478bd9Sstevel@tonic-gate * Allow room for all \ and ^ prefixes, all segments and a MultiNamePrefix.
2037c478bd9Sstevel@tonic-gate * Also, one byte for the null terminator.
2047c478bd9Sstevel@tonic-gate * This may actually be somewhat longer than needed.
2057c478bd9Sstevel@tonic-gate */
2067c478bd9Sstevel@tonic-gate if (PrefixCount == ACPI_UINT32_MAX)
2077c478bd9Sstevel@tonic-gate {
2087c478bd9Sstevel@tonic-gate /* Special case for root */
2097c478bd9Sstevel@tonic-gate
2107c478bd9Sstevel@tonic-gate SizeNeeded = 1 + (ACPI_NAME_SIZE * NumNameSegs) + 2 + 1;
2117c478bd9Sstevel@tonic-gate }
2127c478bd9Sstevel@tonic-gate else
2137c478bd9Sstevel@tonic-gate {
2147c478bd9Sstevel@tonic-gate SizeNeeded = PrefixCount + (ACPI_NAME_SIZE * NumNameSegs) + 2 + 1;
2157c478bd9Sstevel@tonic-gate }
2167c478bd9Sstevel@tonic-gate
2177c478bd9Sstevel@tonic-gate /*
2187c478bd9Sstevel@tonic-gate * Allocate a buffer for the name.
2197c478bd9Sstevel@tonic-gate * This buffer must be deleted by the caller!
2207c478bd9Sstevel@tonic-gate */
22127f7c583Smyers NameString = ACPI_ALLOCATE (SizeNeeded);
2227c478bd9Sstevel@tonic-gate if (!NameString)
2237c478bd9Sstevel@tonic-gate {
22430082d0cSmyers ACPI_ERROR ((AE_INFO,
22526f3cdf0SGordon Ross "Could not allocate size %u", SizeNeeded));
2267c478bd9Sstevel@tonic-gate return_PTR (NULL);
2277c478bd9Sstevel@tonic-gate }
2287c478bd9Sstevel@tonic-gate
2297c478bd9Sstevel@tonic-gate TempPtr = NameString;
2307c478bd9Sstevel@tonic-gate
2317c478bd9Sstevel@tonic-gate /* Set up Root or Parent prefixes if needed */
2327c478bd9Sstevel@tonic-gate
2337c478bd9Sstevel@tonic-gate if (PrefixCount == ACPI_UINT32_MAX)
2347c478bd9Sstevel@tonic-gate {
2357c478bd9Sstevel@tonic-gate *TempPtr++ = AML_ROOT_PREFIX;
2367c478bd9Sstevel@tonic-gate }
2377c478bd9Sstevel@tonic-gate else
2387c478bd9Sstevel@tonic-gate {
2397c478bd9Sstevel@tonic-gate while (PrefixCount--)
2407c478bd9Sstevel@tonic-gate {
2417c478bd9Sstevel@tonic-gate *TempPtr++ = AML_PARENT_PREFIX;
2427c478bd9Sstevel@tonic-gate }
2437c478bd9Sstevel@tonic-gate }
2447c478bd9Sstevel@tonic-gate
2457c478bd9Sstevel@tonic-gate
2467c478bd9Sstevel@tonic-gate /* Set up Dual or Multi prefixes if needed */
2477c478bd9Sstevel@tonic-gate
2487c478bd9Sstevel@tonic-gate if (NumNameSegs > 2)
2497c478bd9Sstevel@tonic-gate {
2507c478bd9Sstevel@tonic-gate /* Set up multi prefixes */
2517c478bd9Sstevel@tonic-gate
252*35786f68SRobert Mustacchi *TempPtr++ = AML_MULTI_NAME_PREFIX;
2537c478bd9Sstevel@tonic-gate *TempPtr++ = (char) NumNameSegs;
2547c478bd9Sstevel@tonic-gate }
2557c478bd9Sstevel@tonic-gate else if (2 == NumNameSegs)
2567c478bd9Sstevel@tonic-gate {
2577c478bd9Sstevel@tonic-gate /* Set up dual prefixes */
2587c478bd9Sstevel@tonic-gate
2597c478bd9Sstevel@tonic-gate *TempPtr++ = AML_DUAL_NAME_PREFIX;
2607c478bd9Sstevel@tonic-gate }
2617c478bd9Sstevel@tonic-gate
2627c478bd9Sstevel@tonic-gate /*
2637c478bd9Sstevel@tonic-gate * Terminate string following prefixes. AcpiExNameSegment() will
2647c478bd9Sstevel@tonic-gate * append the segment(s)
2657c478bd9Sstevel@tonic-gate */
2667c478bd9Sstevel@tonic-gate *TempPtr = 0;
2677c478bd9Sstevel@tonic-gate
2687c478bd9Sstevel@tonic-gate return_PTR (NameString);
2697c478bd9Sstevel@tonic-gate }
2707c478bd9Sstevel@tonic-gate
2717b1019a6SJerry Jelinek
2727c478bd9Sstevel@tonic-gate /*******************************************************************************
2737c478bd9Sstevel@tonic-gate *
2747c478bd9Sstevel@tonic-gate * FUNCTION: AcpiExNameSegment
2757c478bd9Sstevel@tonic-gate *
2767c478bd9Sstevel@tonic-gate * PARAMETERS: InAmlAddress - Pointer to the name in the AML code
2777c478bd9Sstevel@tonic-gate * NameString - Where to return the name. The name is appended
2787c478bd9Sstevel@tonic-gate * to any existing string to form a namepath
2797c478bd9Sstevel@tonic-gate *
2807c478bd9Sstevel@tonic-gate * RETURN: Status
2817c478bd9Sstevel@tonic-gate *
2827c478bd9Sstevel@tonic-gate * DESCRIPTION: Extract an ACPI name (4 bytes) from the AML byte stream
2837c478bd9Sstevel@tonic-gate *
2847c478bd9Sstevel@tonic-gate ******************************************************************************/
2857c478bd9Sstevel@tonic-gate
2867c478bd9Sstevel@tonic-gate static ACPI_STATUS
AcpiExNameSegment(UINT8 ** InAmlAddress,char * NameString)2877c478bd9Sstevel@tonic-gate AcpiExNameSegment (
2887c478bd9Sstevel@tonic-gate UINT8 **InAmlAddress,
2897c478bd9Sstevel@tonic-gate char *NameString)
2907c478bd9Sstevel@tonic-gate {
2917c478bd9Sstevel@tonic-gate char *AmlAddress = (void *) *InAmlAddress;
2927c478bd9Sstevel@tonic-gate ACPI_STATUS Status = AE_OK;
2937c478bd9Sstevel@tonic-gate UINT32 Index;
2947c478bd9Sstevel@tonic-gate char CharBuf[5];
2957c478bd9Sstevel@tonic-gate
2967c478bd9Sstevel@tonic-gate
29727f7c583Smyers ACPI_FUNCTION_TRACE (ExNameSegment);
2987c478bd9Sstevel@tonic-gate
2997c478bd9Sstevel@tonic-gate
3007c478bd9Sstevel@tonic-gate /*
3017b1019a6SJerry Jelinek * If first character is a digit, then we know that we aren't looking
3027b1019a6SJerry Jelinek * at a valid name segment
3037c478bd9Sstevel@tonic-gate */
3047c478bd9Sstevel@tonic-gate CharBuf[0] = *AmlAddress;
3057c478bd9Sstevel@tonic-gate
3067c478bd9Sstevel@tonic-gate if ('0' <= CharBuf[0] && CharBuf[0] <= '9')
3077c478bd9Sstevel@tonic-gate {
30830082d0cSmyers ACPI_ERROR ((AE_INFO, "Invalid leading digit: %c", CharBuf[0]));
3097c478bd9Sstevel@tonic-gate return_ACPI_STATUS (AE_CTRL_PENDING);
3107c478bd9Sstevel@tonic-gate }
3117c478bd9Sstevel@tonic-gate
3127c478bd9Sstevel@tonic-gate for (Index = 0;
3137b1019a6SJerry Jelinek (Index < ACPI_NAME_SIZE) && (AcpiUtValidNameChar (*AmlAddress, 0));
3147c478bd9Sstevel@tonic-gate Index++)
3157c478bd9Sstevel@tonic-gate {
3167c478bd9Sstevel@tonic-gate CharBuf[Index] = *AmlAddress++;
3177c478bd9Sstevel@tonic-gate }
3187c478bd9Sstevel@tonic-gate
3197c478bd9Sstevel@tonic-gate
3207c478bd9Sstevel@tonic-gate /* Valid name segment */
3217c478bd9Sstevel@tonic-gate
3227c478bd9Sstevel@tonic-gate if (Index == 4)
3237c478bd9Sstevel@tonic-gate {
3247c478bd9Sstevel@tonic-gate /* Found 4 valid characters */
3257c478bd9Sstevel@tonic-gate
3267c478bd9Sstevel@tonic-gate CharBuf[4] = '\0';
3277c478bd9Sstevel@tonic-gate
3287c478bd9Sstevel@tonic-gate if (NameString)
3297c478bd9Sstevel@tonic-gate {
3307c478bd9Sstevel@tonic-gate ACPI_DEBUG_PRINT ((ACPI_DB_NAMES,
331*35786f68SRobert Mustacchi "Appending NameSeg %s\n", CharBuf));
332*35786f68SRobert Mustacchi strcat (NameString, CharBuf);
3337c478bd9Sstevel@tonic-gate }
3347c478bd9Sstevel@tonic-gate else
3357c478bd9Sstevel@tonic-gate {
3367c478bd9Sstevel@tonic-gate ACPI_DEBUG_PRINT ((ACPI_DB_NAMES,
337186507a7Smyers "No Name string - %s\n", CharBuf));
3387c478bd9Sstevel@tonic-gate }
3397c478bd9Sstevel@tonic-gate }
3407c478bd9Sstevel@tonic-gate else if (Index == 0)
3417c478bd9Sstevel@tonic-gate {
3427c478bd9Sstevel@tonic-gate /*
3437c478bd9Sstevel@tonic-gate * First character was not a valid name character,
3447c478bd9Sstevel@tonic-gate * so we are looking at something other than a name.
3457c478bd9Sstevel@tonic-gate */
3467c478bd9Sstevel@tonic-gate ACPI_DEBUG_PRINT ((ACPI_DB_INFO,
3477c478bd9Sstevel@tonic-gate "Leading character is not alpha: %02Xh (not a name)\n",
3487c478bd9Sstevel@tonic-gate CharBuf[0]));
3497c478bd9Sstevel@tonic-gate Status = AE_CTRL_PENDING;
3507c478bd9Sstevel@tonic-gate }
3517c478bd9Sstevel@tonic-gate else
3527c478bd9Sstevel@tonic-gate {
3537c478bd9Sstevel@tonic-gate /*
3547c478bd9Sstevel@tonic-gate * Segment started with one or more valid characters, but fewer than
3557c478bd9Sstevel@tonic-gate * the required 4
3567c478bd9Sstevel@tonic-gate */
3577c478bd9Sstevel@tonic-gate Status = AE_AML_BAD_NAME;
35830082d0cSmyers ACPI_ERROR ((AE_INFO,
35926f3cdf0SGordon Ross "Bad character 0x%02x in name, at %p",
3607c478bd9Sstevel@tonic-gate *AmlAddress, AmlAddress));
3617c478bd9Sstevel@tonic-gate }
3627c478bd9Sstevel@tonic-gate
36330082d0cSmyers *InAmlAddress = ACPI_CAST_PTR (UINT8, AmlAddress);
3647c478bd9Sstevel@tonic-gate return_ACPI_STATUS (Status);
3657c478bd9Sstevel@tonic-gate }
3667c478bd9Sstevel@tonic-gate
3677c478bd9Sstevel@tonic-gate
3687c478bd9Sstevel@tonic-gate /*******************************************************************************
3697c478bd9Sstevel@tonic-gate *
3707c478bd9Sstevel@tonic-gate * FUNCTION: AcpiExGetNameString
3717c478bd9Sstevel@tonic-gate *
3727c478bd9Sstevel@tonic-gate * PARAMETERS: DataType - Object type to be associated with this
3737c478bd9Sstevel@tonic-gate * name
3747c478bd9Sstevel@tonic-gate * InAmlAddress - Pointer to the namestring in the AML code
3757c478bd9Sstevel@tonic-gate * OutNameString - Where the namestring is returned
3767c478bd9Sstevel@tonic-gate * OutNameLength - Length of the returned string
3777c478bd9Sstevel@tonic-gate *
3787c478bd9Sstevel@tonic-gate * RETURN: Status, namestring and length
3797c478bd9Sstevel@tonic-gate *
3807c478bd9Sstevel@tonic-gate * DESCRIPTION: Extract a full namepath from the AML byte stream,
3817c478bd9Sstevel@tonic-gate * including any prefixes.
3827c478bd9Sstevel@tonic-gate *
3837c478bd9Sstevel@tonic-gate ******************************************************************************/
3847c478bd9Sstevel@tonic-gate
3857c478bd9Sstevel@tonic-gate ACPI_STATUS
AcpiExGetNameString(ACPI_OBJECT_TYPE DataType,UINT8 * InAmlAddress,char ** OutNameString,UINT32 * OutNameLength)3867c478bd9Sstevel@tonic-gate AcpiExGetNameString (
3877c478bd9Sstevel@tonic-gate ACPI_OBJECT_TYPE DataType,
3887c478bd9Sstevel@tonic-gate UINT8 *InAmlAddress,
3897c478bd9Sstevel@tonic-gate char **OutNameString,
3907c478bd9Sstevel@tonic-gate UINT32 *OutNameLength)
3917c478bd9Sstevel@tonic-gate {
3927c478bd9Sstevel@tonic-gate ACPI_STATUS Status = AE_OK;
3937c478bd9Sstevel@tonic-gate UINT8 *AmlAddress = InAmlAddress;
3947c478bd9Sstevel@tonic-gate char *NameString = NULL;
3957c478bd9Sstevel@tonic-gate UINT32 NumSegments;
3967c478bd9Sstevel@tonic-gate UINT32 PrefixCount = 0;
3977c478bd9Sstevel@tonic-gate BOOLEAN HasPrefix = FALSE;
3987c478bd9Sstevel@tonic-gate
3997c478bd9Sstevel@tonic-gate
40027f7c583Smyers ACPI_FUNCTION_TRACE_PTR (ExGetNameString, AmlAddress);
4017c478bd9Sstevel@tonic-gate
4027c478bd9Sstevel@tonic-gate
4037c478bd9Sstevel@tonic-gate if (ACPI_TYPE_LOCAL_REGION_FIELD == DataType ||
4047c478bd9Sstevel@tonic-gate ACPI_TYPE_LOCAL_BANK_FIELD == DataType ||
4057c478bd9Sstevel@tonic-gate ACPI_TYPE_LOCAL_INDEX_FIELD == DataType)
4067c478bd9Sstevel@tonic-gate {
4077c478bd9Sstevel@tonic-gate /* Disallow prefixes for types associated with FieldUnit names */
4087c478bd9Sstevel@tonic-gate
4097c478bd9Sstevel@tonic-gate NameString = AcpiExAllocateNameString (0, 1);
4107c478bd9Sstevel@tonic-gate if (!NameString)
4117c478bd9Sstevel@tonic-gate {
4127c478bd9Sstevel@tonic-gate Status = AE_NO_MEMORY;
4137c478bd9Sstevel@tonic-gate }
4147c478bd9Sstevel@tonic-gate else
4157c478bd9Sstevel@tonic-gate {
4167c478bd9Sstevel@tonic-gate Status = AcpiExNameSegment (&AmlAddress, NameString);
4177c478bd9Sstevel@tonic-gate }
4187c478bd9Sstevel@tonic-gate }
4197c478bd9Sstevel@tonic-gate else
4207c478bd9Sstevel@tonic-gate {
4217c478bd9Sstevel@tonic-gate /*
4227c478bd9Sstevel@tonic-gate * DataType is not a field name.
4237c478bd9Sstevel@tonic-gate * Examine first character of name for root or parent prefix operators
4247c478bd9Sstevel@tonic-gate */
4257c478bd9Sstevel@tonic-gate switch (*AmlAddress)
4267c478bd9Sstevel@tonic-gate {
4277c478bd9Sstevel@tonic-gate case AML_ROOT_PREFIX:
4287c478bd9Sstevel@tonic-gate
4297c478bd9Sstevel@tonic-gate ACPI_DEBUG_PRINT ((ACPI_DB_LOAD, "RootPrefix(\\) at %p\n",
4307c478bd9Sstevel@tonic-gate AmlAddress));
4317c478bd9Sstevel@tonic-gate
4327c478bd9Sstevel@tonic-gate /*
4337c478bd9Sstevel@tonic-gate * Remember that we have a RootPrefix --
4347c478bd9Sstevel@tonic-gate * see comment in AcpiExAllocateNameString()
4357c478bd9Sstevel@tonic-gate */
4367c478bd9Sstevel@tonic-gate AmlAddress++;
4377c478bd9Sstevel@tonic-gate PrefixCount = ACPI_UINT32_MAX;
4387c478bd9Sstevel@tonic-gate HasPrefix = TRUE;
4397c478bd9Sstevel@tonic-gate break;
4407c478bd9Sstevel@tonic-gate
4417c478bd9Sstevel@tonic-gate case AML_PARENT_PREFIX:
4427c478bd9Sstevel@tonic-gate
4437c478bd9Sstevel@tonic-gate /* Increment past possibly multiple parent prefixes */
4447c478bd9Sstevel@tonic-gate
4457c478bd9Sstevel@tonic-gate do
4467c478bd9Sstevel@tonic-gate {
4477c478bd9Sstevel@tonic-gate ACPI_DEBUG_PRINT ((ACPI_DB_LOAD, "ParentPrefix (^) at %p\n",
4487c478bd9Sstevel@tonic-gate AmlAddress));
4497c478bd9Sstevel@tonic-gate
4507c478bd9Sstevel@tonic-gate AmlAddress++;
4517c478bd9Sstevel@tonic-gate PrefixCount++;
4527c478bd9Sstevel@tonic-gate
4537c478bd9Sstevel@tonic-gate } while (*AmlAddress == AML_PARENT_PREFIX);
4547c478bd9Sstevel@tonic-gate
4557c478bd9Sstevel@tonic-gate HasPrefix = TRUE;
4567c478bd9Sstevel@tonic-gate break;
4577c478bd9Sstevel@tonic-gate
4587c478bd9Sstevel@tonic-gate default:
4597c478bd9Sstevel@tonic-gate
4607c478bd9Sstevel@tonic-gate /* Not a prefix character */
4617c478bd9Sstevel@tonic-gate
4627c478bd9Sstevel@tonic-gate break;
4637c478bd9Sstevel@tonic-gate }
4647c478bd9Sstevel@tonic-gate
4657c478bd9Sstevel@tonic-gate /* Examine first character of name for name segment prefix operator */
4667c478bd9Sstevel@tonic-gate
4677c478bd9Sstevel@tonic-gate switch (*AmlAddress)
4687c478bd9Sstevel@tonic-gate {
4697c478bd9Sstevel@tonic-gate case AML_DUAL_NAME_PREFIX:
4707c478bd9Sstevel@tonic-gate
4717c478bd9Sstevel@tonic-gate ACPI_DEBUG_PRINT ((ACPI_DB_LOAD, "DualNamePrefix at %p\n",
4727c478bd9Sstevel@tonic-gate AmlAddress));
4737c478bd9Sstevel@tonic-gate
4747c478bd9Sstevel@tonic-gate AmlAddress++;
4757c478bd9Sstevel@tonic-gate NameString = AcpiExAllocateNameString (PrefixCount, 2);
4767c478bd9Sstevel@tonic-gate if (!NameString)
4777c478bd9Sstevel@tonic-gate {
4787c478bd9Sstevel@tonic-gate Status = AE_NO_MEMORY;
4797c478bd9Sstevel@tonic-gate break;
4807c478bd9Sstevel@tonic-gate }
4817c478bd9Sstevel@tonic-gate
4827c478bd9Sstevel@tonic-gate /* Indicate that we processed a prefix */
4837c478bd9Sstevel@tonic-gate
4847c478bd9Sstevel@tonic-gate HasPrefix = TRUE;
4857c478bd9Sstevel@tonic-gate
4867c478bd9Sstevel@tonic-gate Status = AcpiExNameSegment (&AmlAddress, NameString);
4877c478bd9Sstevel@tonic-gate if (ACPI_SUCCESS (Status))
4887c478bd9Sstevel@tonic-gate {
4897c478bd9Sstevel@tonic-gate Status = AcpiExNameSegment (&AmlAddress, NameString);
4907c478bd9Sstevel@tonic-gate }
4917c478bd9Sstevel@tonic-gate break;
4927c478bd9Sstevel@tonic-gate
493*35786f68SRobert Mustacchi case AML_MULTI_NAME_PREFIX:
4947c478bd9Sstevel@tonic-gate
4957c478bd9Sstevel@tonic-gate ACPI_DEBUG_PRINT ((ACPI_DB_LOAD, "MultiNamePrefix at %p\n",
4967c478bd9Sstevel@tonic-gate AmlAddress));
4977c478bd9Sstevel@tonic-gate
4987c478bd9Sstevel@tonic-gate /* Fetch count of segments remaining in name path */
4997c478bd9Sstevel@tonic-gate
5007c478bd9Sstevel@tonic-gate AmlAddress++;
5017c478bd9Sstevel@tonic-gate NumSegments = *AmlAddress;
5027c478bd9Sstevel@tonic-gate
5037b1019a6SJerry Jelinek NameString = AcpiExAllocateNameString (
5047b1019a6SJerry Jelinek PrefixCount, NumSegments);
5057c478bd9Sstevel@tonic-gate if (!NameString)
5067c478bd9Sstevel@tonic-gate {
5077c478bd9Sstevel@tonic-gate Status = AE_NO_MEMORY;
5087c478bd9Sstevel@tonic-gate break;
5097c478bd9Sstevel@tonic-gate }
5107c478bd9Sstevel@tonic-gate
5117c478bd9Sstevel@tonic-gate /* Indicate that we processed a prefix */
5127c478bd9Sstevel@tonic-gate
5137c478bd9Sstevel@tonic-gate AmlAddress++;
5147c478bd9Sstevel@tonic-gate HasPrefix = TRUE;
5157c478bd9Sstevel@tonic-gate
5167c478bd9Sstevel@tonic-gate while (NumSegments &&
5177c478bd9Sstevel@tonic-gate (Status = AcpiExNameSegment (&AmlAddress, NameString)) ==
5187c478bd9Sstevel@tonic-gate AE_OK)
5197c478bd9Sstevel@tonic-gate {
5207c478bd9Sstevel@tonic-gate NumSegments--;
5217c478bd9Sstevel@tonic-gate }
5227c478bd9Sstevel@tonic-gate
5237c478bd9Sstevel@tonic-gate break;
5247c478bd9Sstevel@tonic-gate
5257c478bd9Sstevel@tonic-gate case 0:
5267c478bd9Sstevel@tonic-gate
5277c478bd9Sstevel@tonic-gate /* NullName valid as of 8-12-98 ASL/AML Grammar Update */
5287c478bd9Sstevel@tonic-gate
5297c478bd9Sstevel@tonic-gate if (PrefixCount == ACPI_UINT32_MAX)
5307c478bd9Sstevel@tonic-gate {
5317c478bd9Sstevel@tonic-gate ACPI_DEBUG_PRINT ((ACPI_DB_EXEC,
5327c478bd9Sstevel@tonic-gate "NameSeg is \"\\\" followed by NULL\n"));
5337c478bd9Sstevel@tonic-gate }
5347c478bd9Sstevel@tonic-gate
5357c478bd9Sstevel@tonic-gate /* Consume the NULL byte */
5367c478bd9Sstevel@tonic-gate
5377c478bd9Sstevel@tonic-gate AmlAddress++;
5387c478bd9Sstevel@tonic-gate NameString = AcpiExAllocateNameString (PrefixCount, 0);
5397c478bd9Sstevel@tonic-gate if (!NameString)
5407c478bd9Sstevel@tonic-gate {
5417c478bd9Sstevel@tonic-gate Status = AE_NO_MEMORY;
5427c478bd9Sstevel@tonic-gate break;
5437c478bd9Sstevel@tonic-gate }
5447c478bd9Sstevel@tonic-gate
5457c478bd9Sstevel@tonic-gate break;
5467c478bd9Sstevel@tonic-gate
5477c478bd9Sstevel@tonic-gate default:
5487c478bd9Sstevel@tonic-gate
5497c478bd9Sstevel@tonic-gate /* Name segment string */
5507c478bd9Sstevel@tonic-gate
5517c478bd9Sstevel@tonic-gate NameString = AcpiExAllocateNameString (PrefixCount, 1);
5527c478bd9Sstevel@tonic-gate if (!NameString)
5537c478bd9Sstevel@tonic-gate {
5547c478bd9Sstevel@tonic-gate Status = AE_NO_MEMORY;
5557c478bd9Sstevel@tonic-gate break;
5567c478bd9Sstevel@tonic-gate }
5577c478bd9Sstevel@tonic-gate
5587c478bd9Sstevel@tonic-gate Status = AcpiExNameSegment (&AmlAddress, NameString);
5597c478bd9Sstevel@tonic-gate break;
5607c478bd9Sstevel@tonic-gate }
5617c478bd9Sstevel@tonic-gate }
5627c478bd9Sstevel@tonic-gate
5637c478bd9Sstevel@tonic-gate if (AE_CTRL_PENDING == Status && HasPrefix)
5647c478bd9Sstevel@tonic-gate {
5657c478bd9Sstevel@tonic-gate /* Ran out of segments after processing a prefix */
5667c478bd9Sstevel@tonic-gate
56730082d0cSmyers ACPI_ERROR ((AE_INFO,
56830082d0cSmyers "Malformed Name at %p", NameString));
5697c478bd9Sstevel@tonic-gate Status = AE_AML_BAD_NAME;
5707c478bd9Sstevel@tonic-gate }
5717c478bd9Sstevel@tonic-gate
572450d6964Smyers if (ACPI_FAILURE (Status))
573450d6964Smyers {
574450d6964Smyers if (NameString)
575450d6964Smyers {
57627f7c583Smyers ACPI_FREE (NameString);
577450d6964Smyers }
578450d6964Smyers return_ACPI_STATUS (Status);
579450d6964Smyers }
580450d6964Smyers
5817c478bd9Sstevel@tonic-gate *OutNameString = NameString;
5827c478bd9Sstevel@tonic-gate *OutNameLength = (UINT32) (AmlAddress - InAmlAddress);
5837c478bd9Sstevel@tonic-gate
5847c478bd9Sstevel@tonic-gate return_ACPI_STATUS (Status);
5857c478bd9Sstevel@tonic-gate }
586