1 /******************************************************************************
3 * Module Name: pstree - Parser op tree manipulation/traversal/search
5 *****************************************************************************/
7 /******************************************************************************
11 * Some or all of this work - Copyright (c) 1999 - 2015, Intel Corp.
12 * All rights reserved.
16 * 2.1. This is your license from Intel Corp. under its intellectual property
17 * rights. You may have additional license terms from the party that provided
18 * you this software, covering your right to use that party's intellectual
21 * 2.2. Intel grants, free of charge, to any person ("Licensee") obtaining a
22 * copy of the source code appearing in this file ("Covered Code") an
23 * irrevocable, perpetual, worldwide license under Intel's copyrights in the
24 * base code distributed originally by Intel ("Original Intel Code") to copy,
25 * make derivatives, distribute, use and display any portion of the Covered
26 * Code in any form, with the right to sublicense such rights; and
28 * 2.3. Intel grants Licensee a non-exclusive and non-transferable patent
29 * license (with the right to sublicense), under only those claims of Intel
30 * patents that are infringed by the Original Intel Code, to make, use, sell,
31 * offer to sell, and import the Covered Code and derivative works thereof
32 * solely to the minimum extent necessary to exercise the above copyright
33 * license, and in no event shall the patent license extend to any additions
34 * to or modifications of the Original Intel Code. No other license or right
35 * is granted directly or by implication, estoppel or otherwise;
37 * The above copyright and patent license is granted only if the following
42 * 3.1. Redistribution of Source with Rights to Further Distribute Source.
43 * Redistribution of source code of any substantial portion of the Covered
44 * Code or modification with rights to further distribute source must include
45 * the above Copyright Notice, the above License, this list of Conditions,
46 * and the following Disclaimer and Export Compliance provision. In addition,
47 * Licensee must cause all Covered Code to which Licensee contributes to
48 * contain a file documenting the changes Licensee made to create that Covered
49 * Code and the date of any change. Licensee must include in that file the
50 * documentation of any changes made by any predecessor Licensee. Licensee
51 * must include a prominent statement that the modification is derived,
52 * directly or indirectly, from Original Intel Code.
54 * 3.2. Redistribution of Source with no Rights to Further Distribute Source.
55 * Redistribution of source code of any substantial portion of the Covered
56 * Code or modification without rights to further distribute source must
57 * include the following Disclaimer and Export Compliance provision in the
58 * documentation and/or other materials provided with distribution. In
59 * addition, Licensee may not authorize further sublicense of source of any
60 * portion of the Covered Code, and must include terms to the effect that the
61 * license from Licensee to its licensee is limited to the intellectual
62 * property embodied in the software Licensee provides to its licensee, and
63 * not to intellectual property embodied in modifications its licensee may
66 * 3.3. Redistribution of Executable. Redistribution in executable form of any
67 * substantial portion of the Covered Code or modification must reproduce the
68 * above Copyright Notice, and the following Disclaimer and Export Compliance
69 * provision in the documentation and/or other materials provided with the
72 * 3.4. Intel retains all right, title, and interest in and to the Original
75 * 3.5. Neither the name Intel nor any other trademark owned or controlled by
76 * Intel shall be used in advertising or otherwise to promote the sale, use or
77 * other dealings in products derived from or relating to the Covered Code
78 * without prior written authorization from Intel.
80 * 4. Disclaimer and Export Compliance
82 * 4.1. INTEL MAKES NO WARRANTY OF ANY KIND REGARDING ANY SOFTWARE PROVIDED
83 * HERE. ANY SOFTWARE ORIGINATING FROM INTEL OR DERIVED FROM INTEL SOFTWARE
84 * IS PROVIDED "AS IS," AND INTEL WILL NOT PROVIDE ANY SUPPORT, ASSISTANCE,
85 * INSTALLATION, TRAINING OR OTHER SERVICES. INTEL WILL NOT PROVIDE ANY
86 * UPDATES, ENHANCEMENTS OR EXTENSIONS. INTEL SPECIFICALLY DISCLAIMS ANY
87 * IMPLIED WARRANTIES OF MERCHANTABILITY, NONINFRINGEMENT AND FITNESS FOR A
90 * 4.2. IN NO EVENT SHALL INTEL HAVE ANY LIABILITY TO LICENSEE, ITS LICENSEES
91 * OR ANY OTHER THIRD PARTY, FOR ANY LOST PROFITS, LOST DATA, LOSS OF USE OR
92 * COSTS OF PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES, OR FOR ANY INDIRECT,
93 * SPECIAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THIS AGREEMENT, UNDER ANY
94 * CAUSE OF ACTION OR THEORY OF LIABILITY, AND IRRESPECTIVE OF WHETHER INTEL
95 * HAS ADVANCE NOTICE OF THE POSSIBILITY OF SUCH DAMAGES. THESE LIMITATIONS
96 * SHALL APPLY NOTWITHSTANDING THE FAILURE OF THE ESSENTIAL PURPOSE OF ANY
99 * 4.3. Licensee shall not export, either directly or indirectly, any of this
100 * software or system incorporating such software without first obtaining any
101 * required license or other approval from the U. S. Department of Commerce or
102 * any other agency or department of the United States Government. In the
103 * event Licensee exports any such software from the United States or
104 * re-exports any such software from a foreign destination, Licensee shall
105 * ensure that the distribution and export/re-export of the software is in
106 * compliance with all laws, regulations, orders, or other restrictions of the
107 * U.S. Export Administration Regulations. Licensee agrees that neither it nor
108 * any of its subsidiaries will export/re-export any technical data, process,
109 * software, or service, directly or indirectly, to any country for which the
110 * United States government or any agency thereof requires an export license,
111 * other governmental approval, or letter of assurance, without first obtaining
112 * such license, approval or letter.
114 *****************************************************************************/
117 #include "accommon.h"
118 #include "acparser.h"
121 #define _COMPONENT ACPI_PARSER
122 ACPI_MODULE_NAME ("pstree")
124 /* Local prototypes */
126 #ifdef ACPI_OBSOLETE_FUNCTIONS
129 ACPI_PARSE_OBJECT *op);
133 /*******************************************************************************
135 * FUNCTION: AcpiPsGetArg
137 * PARAMETERS: Op - Get an argument for this op
138 * Argn - Nth argument to get
140 * RETURN: The argument (as an Op object). NULL if argument does not exist
142 * DESCRIPTION: Get the specified op's argument.
144 ******************************************************************************/
148 ACPI_PARSE_OBJECT *Op,
151 ACPI_PARSE_OBJECT *Arg = NULL;
152 const ACPI_OPCODE_INFO *OpInfo;
155 ACPI_FUNCTION_ENTRY ();
158 if (Op->Common.AmlOpcode == AML_INT_CONNECTION_OP)
160 return (Op->Common.Value.Arg);
163 /* Get the info structure for this opcode */
165 OpInfo = AcpiPsGetOpcodeInfo (Op->Common.AmlOpcode);
166 if (OpInfo->Class == AML_CLASS_UNKNOWN)
168 /* Invalid opcode or ASCII character */
173 /* Check if this opcode requires argument sub-objects */
175 if (!(OpInfo->Flags & AML_HAS_ARGS))
177 /* Has no linked argument objects */
182 /* Get the requested argument object */
184 Arg = Op->Common.Value.Arg;
188 Arg = Arg->Common.Next;
195 /*******************************************************************************
197 * FUNCTION: AcpiPsAppendArg
199 * PARAMETERS: Op - Append an argument to this Op.
200 * Arg - Argument Op to append
204 * DESCRIPTION: Append an argument to an op's argument list (a NULL arg is OK)
206 ******************************************************************************/
210 ACPI_PARSE_OBJECT *Op,
211 ACPI_PARSE_OBJECT *Arg)
213 ACPI_PARSE_OBJECT *PrevArg;
214 const ACPI_OPCODE_INFO *OpInfo;
217 ACPI_FUNCTION_ENTRY ();
225 /* Get the info structure for this opcode */
227 OpInfo = AcpiPsGetOpcodeInfo (Op->Common.AmlOpcode);
228 if (OpInfo->Class == AML_CLASS_UNKNOWN)
232 ACPI_ERROR ((AE_INFO, "Invalid AML Opcode: 0x%2.2X",
233 Op->Common.AmlOpcode));
237 /* Check if this opcode requires argument sub-objects */
239 if (!(OpInfo->Flags & AML_HAS_ARGS))
241 /* Has no linked argument objects */
246 /* Append the argument to the linked argument list */
248 if (Op->Common.Value.Arg)
250 /* Append to existing argument list */
252 PrevArg = Op->Common.Value.Arg;
253 while (PrevArg->Common.Next)
255 PrevArg = PrevArg->Common.Next;
257 PrevArg->Common.Next = Arg;
261 /* No argument list, this will be the first argument */
263 Op->Common.Value.Arg = Arg;
266 /* Set the parent in this arg and any args linked after it */
270 Arg->Common.Parent = Op;
271 Arg = Arg->Common.Next;
273 Op->Common.ArgListLength++;
278 /*******************************************************************************
280 * FUNCTION: AcpiPsGetDepthNext
282 * PARAMETERS: Origin - Root of subtree to search
283 * Op - Last (previous) Op that was found
285 * RETURN: Next Op found in the search.
287 * DESCRIPTION: Get next op in tree (walking the tree in depth-first order)
288 * Return NULL when reaching "origin" or when walking up from root
290 ******************************************************************************/
294 ACPI_PARSE_OBJECT *Origin,
295 ACPI_PARSE_OBJECT *Op)
297 ACPI_PARSE_OBJECT *Next = NULL;
298 ACPI_PARSE_OBJECT *Parent;
299 ACPI_PARSE_OBJECT *Arg;
302 ACPI_FUNCTION_ENTRY ();
310 /* Look for an argument or child */
312 Next = AcpiPsGetArg (Op, 0);
318 /* Look for a sibling */
320 Next = Op->Common.Next;
326 /* Look for a sibling of parent */
328 Parent = Op->Common.Parent;
332 Arg = AcpiPsGetArg (Parent, 0);
333 while (Arg && (Arg != Origin) && (Arg != Op))
335 Arg = Arg->Common.Next;
340 /* Reached parent of origin, end search */
345 if (Parent->Common.Next)
347 /* Found sibling of parent */
349 return (Parent->Common.Next);
353 Parent = Parent->Common.Parent;
360 #ifdef ACPI_OBSOLETE_FUNCTIONS
361 /*******************************************************************************
363 * FUNCTION: AcpiPsGetChild
365 * PARAMETERS: Op - Get the child of this Op
367 * RETURN: Child Op, Null if none is found.
369 * DESCRIPTION: Get op's children or NULL if none
371 ******************************************************************************/
375 ACPI_PARSE_OBJECT *Op)
377 ACPI_PARSE_OBJECT *Child = NULL;
380 ACPI_FUNCTION_ENTRY ();
383 switch (Op->Common.AmlOpcode)
388 case AML_THERMAL_ZONE_OP:
389 case AML_INT_METHODCALL_OP:
391 Child = AcpiPsGetArg (Op, 0);
401 Child = AcpiPsGetArg (Op, 1);
404 case AML_POWER_RES_OP:
405 case AML_INDEX_FIELD_OP:
407 Child = AcpiPsGetArg (Op, 2);
410 case AML_PROCESSOR_OP:
411 case AML_BANK_FIELD_OP:
413 Child = AcpiPsGetArg (Op, 3);
418 /* All others have no children */