ReactOS 0.4.15-dev-7889-g76290a6
pswalk.c
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1/******************************************************************************
2 *
3 * Module Name: pswalk - Parser routines to walk parsed op tree(s)
4 *
5 *****************************************************************************/
6
7/*
8 * Copyright (C) 2000 - 2022, Intel Corp.
9 * All rights reserved.
10 *
11 * Redistribution and use in source and binary forms, with or without
12 * modification, are permitted provided that the following conditions
13 * are met:
14 * 1. Redistributions of source code must retain the above copyright
15 * notice, this list of conditions, and the following disclaimer,
16 * without modification.
17 * 2. Redistributions in binary form must reproduce at minimum a disclaimer
18 * substantially similar to the "NO WARRANTY" disclaimer below
19 * ("Disclaimer") and any redistribution must be conditioned upon
20 * including a substantially similar Disclaimer requirement for further
21 * binary redistribution.
22 * 3. Neither the names of the above-listed copyright holders nor the names
23 * of any contributors may be used to endorse or promote products derived
24 * from this software without specific prior written permission.
25 *
26 * Alternatively, this software may be distributed under the terms of the
27 * GNU General Public License ("GPL") version 2 as published by the Free
28 * Software Foundation.
29 *
30 * NO WARRANTY
31 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
32 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
33 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
34 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
35 * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
36 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
37 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
38 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
39 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
40 * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
41 * POSSIBILITY OF SUCH DAMAGES.
42 */
43
44#include "acpi.h"
45#include "accommon.h"
46#include "acparser.h"
47
48#define _COMPONENT ACPI_PARSER
49 ACPI_MODULE_NAME ("pswalk")
50
51
52/*******************************************************************************
53 *
54 * FUNCTION: AcpiPsDeleteParseTree
55 *
56 * PARAMETERS: SubtreeRoot - Root of tree (or subtree) to delete
57 *
58 * RETURN: None
59 *
60 * DESCRIPTION: Delete a portion of or an entire parse tree.
61 *
62 ******************************************************************************/
63
64#include "amlcode.h"
65
66void
68 ACPI_PARSE_OBJECT *SubtreeRoot)
69{
70 ACPI_PARSE_OBJECT *Op = SubtreeRoot;
71 ACPI_PARSE_OBJECT *Next = NULL;
73 UINT32 Level = 0;
74
75
76 ACPI_FUNCTION_TRACE_PTR (PsDeleteParseTree, SubtreeRoot);
77
79 " root %p\n", SubtreeRoot));
80
81 /* Visit all nodes in the subtree */
82
83 while (Op)
84 {
85 if (Op != Parent)
86 {
87 /* This is the descending case */
88
90 {
91 /* This debug option will print the entire parse tree */
92
93 AcpiOsPrintf (" %*.s%s %p", (Level * 4), " ",
94 AcpiPsGetOpcodeName (Op->Common.AmlOpcode), Op);
95
96 if (Op->Named.AmlOpcode == AML_INT_NAMEPATH_OP)
97 {
98 AcpiOsPrintf (" %4.4s", Op->Common.Value.String);
99 }
100 if (Op->Named.AmlOpcode == AML_STRING_OP)
101 {
102 AcpiOsPrintf (" %s", Op->Common.Value.String);
103 }
104 AcpiOsPrintf ("\n");
105 }
106
107 /* Look for an argument or child of the current op */
108
109 Next = AcpiPsGetArg (Op, 0);
110 if (Next)
111 {
112 /* Still going downward in tree (Op is not completed yet) */
113
114 Op = Next;
115 Level++;
116 continue;
117 }
118 }
119
120 /* No more children, this Op is complete. */
121
122 Next = Op->Common.Next;
123 Parent = Op->Common.Parent;
124
125 AcpiPsFreeOp (Op);
126
127 /* If we are back to the starting point, the walk is complete. */
128
129 if (Op == SubtreeRoot)
130 {
132 }
133
134 if (Next)
135 {
136 Op = Next;
137 }
138 else
139 {
140 Level--;
141 Op = Parent;
142 }
143 }
144
146}
unsigned int UINT32
#define ACPI_DB_PARSE_TREES
Definition: acoutput.h:172
#define ACPI_DEBUG_PRINT(pl)
Definition: acoutput.h:475
#define ACPI_MODULE_NAME(Name)
Definition: acoutput.h:216
#define ACPI_IS_DEBUG_ENABLED(Level, Component)
Definition: acoutput.h:490
#define ACPI_FUNCTION_TRACE_PTR(a, b)
Definition: acoutput.h:481
#define ACPI_LV_PARSE_TREES
Definition: acoutput.h:119
#define return_VOID
Definition: acoutput.h:495
const char * AcpiPsGetOpcodeName(UINT16 Opcode)
Definition: psopinfo.c:169
ACPI_PARSE_OBJECT * AcpiPsGetArg(ACPI_PARSE_OBJECT *op, UINT32 argn)
Definition: pstree.c:76
void AcpiPsFreeOp(ACPI_PARSE_OBJECT *Op)
Definition: psutils.c:212
void ACPI_INTERNAL_VAR_XFACE AcpiOsPrintf(const char *Format,...)
Definition: osl.c:851
ACPI_PHYSICAL_ADDRESS ACPI_SIZE BOOLEAN Warn UINT32 *TableIdx UINT32 ACPI_TABLE_HEADER *OutTableHeader ACPI_TABLE_HEADER **OutTable ACPI_HANDLE UINT32 ACPI_WALK_CALLBACK ACPI_WALK_CALLBACK void void **ReturnValue UINT32 ACPI_BUFFER *RetPathPtr ACPI_OBJECT_HANDLER void *Data ACPI_OBJECT_HANDLER void **Data ACPI_STRING ACPI_OBJECT_LIST ACPI_BUFFER *ReturnObjectBuffer ACPI_DEVICE_INFO **ReturnBuffer ACPI_HANDLE Parent
Definition: acpixf.h:732
#define AML_STRING_OP
Definition: amlcode.h:58
#define AML_INT_NAMEPATH_OP
Definition: amlcode.h:205
#define NULL
Definition: types.h:112
void AcpiPsDeleteParseTree(ACPI_PARSE_OBJECT *SubtreeRoot)
Definition: pswalk.c:67
#define _COMPONENT
Definition: pswalk.c:48
ACPI_PARSE_OBJ_NAMED Named
Definition: aclocal.h:1079
ACPI_PARSE_OBJ_COMMON Common
Definition: aclocal.h:1078
_IRQL_requires_same_ typedef _In_ ULONG _In_ UCHAR Level
Definition: wmitypes.h:56