1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
|
/******************************************************************************
*
* Module Name: asllookup- Namespace lookup functions
*
*****************************************************************************/
/*
* Copyright (C) 2000 - 2013, Intel Corp.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions, and the following disclaimer,
* without modification.
* 2. Redistributions in binary form must reproduce at minimum a disclaimer
* substantially similar to the "NO WARRANTY" disclaimer below
* ("Disclaimer") and any redistribution must be conditioned upon
* including a substantially similar Disclaimer requirement for further
* binary redistribution.
* 3. Neither the names of the above-listed copyright holders nor the names
* of any contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* Alternatively, this software may be distributed under the terms of the
* GNU General Public License ("GPL") version 2 as published by the Free
* Software Foundation.
*
* NO WARRANTY
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
* IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGES.
*/
#include <contrib/dev/acpica/compiler/aslcompiler.h>
#include "aslcompiler.y.h"
#include <contrib/dev/acpica/include/acparser.h>
#include <contrib/dev/acpica/include/amlcode.h>
#include <contrib/dev/acpica/include/acnamesp.h>
#include <contrib/dev/acpica/include/acdispat.h>
#define _COMPONENT ACPI_COMPILER
ACPI_MODULE_NAME ("asllookup")
/* Local prototypes */
static ACPI_STATUS
LkIsObjectUsed (
ACPI_HANDLE ObjHandle,
UINT32 Level,
void *Context,
void **ReturnValue);
static ACPI_PARSE_OBJECT *
LkGetNameOp (
ACPI_PARSE_OBJECT *Op);
/*******************************************************************************
*
* FUNCTION: LkFindUnreferencedObjects
*
* PARAMETERS: None
*
* RETURN: None
*
* DESCRIPTION: Namespace walk to find objects that are not referenced in any
* way. Must be called after the namespace has been cross
* referenced.
*
******************************************************************************/
void
LkFindUnreferencedObjects (
void)
{
/* Walk entire namespace from the supplied root */
(void) AcpiNsWalkNamespace (ACPI_TYPE_ANY, ACPI_ROOT_OBJECT,
ACPI_UINT32_MAX, FALSE, LkIsObjectUsed, NULL,
NULL, NULL);
}
/*******************************************************************************
*
* FUNCTION: LkIsObjectUsed
*
* PARAMETERS: ACPI_WALK_CALLBACK
*
* RETURN: Status
*
* DESCRIPTION: Check for an unreferenced namespace object and emit a warning.
* We have to be careful, because some types and names are
* typically or always unreferenced, we don't want to issue
* excessive warnings.
*
******************************************************************************/
static ACPI_STATUS
LkIsObjectUsed (
ACPI_HANDLE ObjHandle,
UINT32 Level,
void *Context,
void **ReturnValue)
{
ACPI_NAMESPACE_NODE *Node = ACPI_CAST_PTR (ACPI_NAMESPACE_NODE, ObjHandle);
/* Referenced flag is set during the namespace xref */
if (Node->Flags & ANOBJ_IS_REFERENCED)
{
return (AE_OK);
}
/*
* Ignore names that start with an underscore,
* these are the reserved ACPI names and are typically not referenced,
* they are called by the host OS.
*/
if (Node->Name.Ascii[0] == '_')
{
return (AE_OK);
}
/* There are some types that are typically not referenced, ignore them */
switch (Node->Type)
{
case ACPI_TYPE_DEVICE:
case ACPI_TYPE_PROCESSOR:
case ACPI_TYPE_POWER:
case ACPI_TYPE_LOCAL_RESOURCE:
return (AE_OK);
default:
break;
}
/* All others are valid unreferenced namespace objects */
if (Node->Op)
{
AslError (ASL_WARNING2, ASL_MSG_NOT_REFERENCED, LkGetNameOp (Node->Op), NULL);
}
return (AE_OK);
}
/*******************************************************************************
*
* FUNCTION: LkGetNameOp
*
* PARAMETERS: Op - Current Op
*
* RETURN: NameOp associated with the input op
*
* DESCRIPTION: Find the name declaration op associated with the operator
*
******************************************************************************/
static ACPI_PARSE_OBJECT *
LkGetNameOp (
ACPI_PARSE_OBJECT *Op)
{
const ACPI_OPCODE_INFO *OpInfo;
ACPI_PARSE_OBJECT *NameOp = Op;
OpInfo = AcpiPsGetOpcodeInfo (Op->Asl.AmlOpcode);
/* Get the NamePath from the appropriate place */
if (OpInfo->Flags & AML_NAMED)
{
/* For nearly all NAMED operators, the name reference is the first child */
NameOp = Op->Asl.Child;
if (Op->Asl.AmlOpcode == AML_ALIAS_OP)
{
/*
* ALIAS is the only oddball opcode, the name declaration
* (alias name) is the second operand
*/
NameOp = Op->Asl.Child->Asl.Next;
}
}
else if (OpInfo->Flags & AML_CREATE)
{
/* Name must appear as the last parameter */
NameOp = Op->Asl.Child;
while (!(NameOp->Asl.CompileFlags & NODE_IS_NAME_DECLARATION))
{
NameOp = NameOp->Asl.Next;
}
}
return (NameOp);
}
|
