aboutsummaryrefslogtreecommitdiff
path: root/include/acpi/acexcep.h
blob: 233a72f169bb7e02b6de42d8c2350c9371163f78 (plain)
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
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
/* SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0 */
/******************************************************************************
 *
 * Name: acexcep.h - Exception codes returned by the ACPI subsystem
 *
 * Copyright (C) 2000 - 2019, Intel Corp.
 *
 *****************************************************************************/

#ifndef __ACEXCEP_H__
#define __ACEXCEP_H__

/* This module contains all possible exception codes for acpi_status */

/*
 * Exception code classes
 */
#define AE_CODE_ENVIRONMENTAL           0x0000	/* General ACPICA environment */
#define AE_CODE_PROGRAMMER              0x1000	/* External ACPICA interface caller */
#define AE_CODE_ACPI_TABLES             0x2000	/* ACPI tables */
#define AE_CODE_AML                     0x3000	/* From executing AML code */
#define AE_CODE_CONTROL                 0x4000	/* Internal control codes */

#define AE_CODE_MAX                     0x4000
#define AE_CODE_MASK                    0xF000

/*
 * Macros to insert the exception code classes
 */
#define EXCEP_ENV(code)                 ((acpi_status) (code | AE_CODE_ENVIRONMENTAL))
#define EXCEP_PGM(code)                 ((acpi_status) (code | AE_CODE_PROGRAMMER))
#define EXCEP_TBL(code)                 ((acpi_status) (code | AE_CODE_ACPI_TABLES))
#define EXCEP_AML(code)                 ((acpi_status) (code | AE_CODE_AML))
#define EXCEP_CTL(code)                 ((acpi_status) (code | AE_CODE_CONTROL))

/*
 * Exception info table. The "Description" field is used only by the
 * ACPICA help application (acpihelp).
 */
struct acpi_exception_info {
	char *name;

#ifdef ACPI_HELP_APP
	char *description;
#endif
};

#ifdef ACPI_HELP_APP
#define EXCEP_TXT(name,description)     {name, description}
#else
#define EXCEP_TXT(name,description)     {name}
#endif

/*
 * Success is always zero, failure is non-zero
 */
#define ACPI_SUCCESS(a)                 (!(a))
#define ACPI_FAILURE(a)                 (a)

#define AE_OK                           (acpi_status) 0x0000

#define ACPI_ENV_EXCEPTION(status)      (status & AE_CODE_ENVIRONMENTAL)
#define ACPI_AML_EXCEPTION(status)      (status & AE_CODE_AML)
#define ACPI_PROG_EXCEPTION(status)     (status & AE_CODE_PROGRAMMER)
#define ACPI_TABLE_EXCEPTION(status)    (status & AE_CODE_ACPI_TABLES)
#define ACPI_CNTL_EXCEPTION(status)     (status & AE_CODE_CONTROL)

/*
 * Environmental exceptions
 */
#define AE_ERROR                        EXCEP_ENV (0x0001)
#define AE_NO_ACPI_TABLES               EXCEP_ENV (0x0002)
#define AE_NO_NAMESPACE                 EXCEP_ENV (0x0003)
#define AE_NO_MEMORY                    EXCEP_ENV (0x0004)
#define AE_NOT_FOUND                    EXCEP_ENV (0x0005)
#define AE_NOT_EXIST                    EXCEP_ENV (0x0006)
#define AE_ALREADY_EXISTS               EXCEP_ENV (0x0007)
#define AE_TYPE                         EXCEP_ENV (0x0008)
#define AE_NULL_OBJECT                  EXCEP_ENV (0x0009)
#define AE_NULL_ENTRY                   EXCEP_ENV (0x000A)
#define AE_BUFFER_OVERFLOW              EXCEP_ENV (0x000B)
#define AE_STACK_OVERFLOW               EXCEP_ENV (0x000C)
#define AE_STACK_UNDERFLOW              EXCEP_ENV (0x000D)
#define AE_NOT_IMPLEMENTED              EXCEP_ENV (0x000E)
#define AE_SUPPORT                      EXCEP_ENV (0x000F)
#define AE_LIMIT                        EXCEP_ENV (0x0010)
#define AE_TIME                         EXCEP_ENV (0x0011)
#define AE_ACQUIRE_DEADLOCK             EXCEP_ENV (0x0012)
#define AE_RELEASE_DEADLOCK             EXCEP_ENV (0x0013)
#define AE_NOT_ACQUIRED                 EXCEP_ENV (0x0014)
#define AE_ALREADY_ACQUIRED             EXCEP_ENV (0x0015)
#define AE_NO_HARDWARE_RESPONSE         EXCEP_ENV (0x0016)
#define AE_NO_GLOBAL_LOCK               EXCEP_ENV (0x0017)
#define AE_ABORT_METHOD                 EXCEP_ENV (0x0018)
#define AE_SAME_HANDLER                 EXCEP_ENV (0x0019)
#define AE_NO_HANDLER                   EXCEP_ENV (0x001A)
#define AE_OWNER_ID_LIMIT               EXCEP_ENV (0x001B)
#define AE_NOT_CONFIGURED               EXCEP_ENV (0x001C)
#define AE_ACCESS                       EXCEP_ENV (0x001D)
#define AE_IO_ERROR                     EXCEP_ENV (0x001E)
#define AE_NUMERIC_OVERFLOW             EXCEP_ENV (0x001F)
#define AE_HEX_OVERFLOW                 EXCEP_ENV (0x0020)
#define AE_DECIMAL_OVERFLOW             EXCEP_ENV (0x0021)
#define AE_OCTAL_OVERFLOW               EXCEP_ENV (0x0022)
#define AE_END_OF_TABLE                 EXCEP_ENV (0x0023)

#define AE_CODE_ENV_MAX                 0x0023

/*
 * Programmer exceptions
 */
#define AE_BAD_PARAMETER                EXCEP_PGM (0x0001)
#define AE_BAD_CHARACTER                EXCEP_PGM (0x0002)
#define AE_BAD_PATHNAME                 EXCEP_PGM (0x0003)
#define AE_BAD_DATA                     EXCEP_PGM (0x0004)
#define AE_BAD_HEX_CONSTANT             EXCEP_PGM (0x0005)
#define AE_BAD_OCTAL_CONSTANT           EXCEP_PGM (0x0006)
#define AE_BAD_DECIMAL_CONSTANT         EXCEP_PGM (0x0007)
#define AE_MISSING_ARGUMENTS            EXCEP_PGM (0x0008)
#define AE_BAD_ADDRESS                  EXCEP_PGM (0x0009)

#define AE_CODE_PGM_MAX                 0x0009

/*
 * Acpi table exceptions
 */
#define AE_BAD_SIGNATURE                EXCEP_TBL (0x0001)
#define AE_BAD_HEADER                   EXCEP_TBL (0x0002)
#define AE_BAD_CHECKSUM                 EXCEP_TBL (0x0003)
#define AE_BAD_VALUE                    EXCEP_TBL (0x0004)
#define AE_INVALID_TABLE_LENGTH         EXCEP_TBL (0x0005)

#define AE_CODE_TBL_MAX                 0x0005

/*
 * AML exceptions. These are caused by problems with
 * the actual AML byte stream
 */
#define AE_AML_BAD_OPCODE               EXCEP_AML (0x0001)
#define AE_AML_NO_OPERAND               EXCEP_AML (0x0002)
#define AE_AML_OPERAND_TYPE             EXCEP_AML (0x0003)
#define AE_AML_OPERAND_VALUE            EXCEP_AML (0x0004)
#define AE_AML_UNINITIALIZED_LOCAL      EXCEP_AML (0x0005)
#define AE_AML_UNINITIALIZED_ARG        EXCEP_AML (0x0006)
#define AE_AML_UNINITIALIZED_ELEMENT    EXCEP_AML (0x0007)
#define AE_AML_NUMERIC_OVERFLOW         EXCEP_AML (0x0008)
#define AE_AML_REGION_LIMIT             EXCEP_AML (0x0009)
#define AE_AML_BUFFER_LIMIT             EXCEP_AML (0x000A)
#define AE_AML_PACKAGE_LIMIT            EXCEP_AML (0x000B)
#define AE_AML_DIVIDE_BY_ZERO           EXCEP_AML (0x000C)
#define AE_AML_BAD_NAME                 EXCEP_AML (0x000D)
#define AE_AML_NAME_NOT_FOUND           EXCEP_AML (0x000E)
#define AE_AML_INTERNAL                 EXCEP_AML (0x000F)
#define AE_AML_INVALID_SPACE_ID         EXCEP_AML (0x0010)
#define AE_AML_STRING_LIMIT             EXCEP_AML (0x0011)
#define AE_AML_NO_RETURN_VALUE          EXCEP_AML (0x0012)
#define AE_AML_METHOD_LIMIT             EXCEP_AML (0x0013)
#define AE_AML_NOT_OWNER                EXCEP_AML (0x0014)
#define AE_AML_MUTEX_ORDER              EXCEP_AML (0x0015)
#define AE_AML_MUTEX_NOT_ACQUIRED       EXCEP_AML (0x0016)
#define AE_AML_INVALID_RESOURCE_TYPE    EXCEP_AML (0x0017)
#define AE_AML_INVALID_INDEX            EXCEP_AML (0x0018)
#define AE_AML_REGISTER_LIMIT           EXCEP_AML (0x0019)
#define AE_AML_NO_WHILE                 EXCEP_AML (0x001A)
#define AE_AML_ALIGNMENT                EXCEP_AML (0x001B)
#define AE_AML_NO_RESOURCE_END_TAG      EXCEP_AML (0x001C)
#define AE_AML_BAD_RESOURCE_VALUE       EXCEP_AML (0x001D)
#define AE_AML_CIRCULAR_REFERENCE       EXCEP_AML (0x001E)
#define AE_AML_BAD_RESOURCE_LENGTH      EXCEP_AML (0x001F)
#define AE_AML_ILLEGAL_ADDRESS          EXCEP_AML (0x0020)
#define AE_AML_LOOP_TIMEOUT             EXCEP_AML (0x0021)
#define AE_AML_UNINITIALIZED_NODE       EXCEP_AML (0x0022)
#define AE_AML_TARGET_TYPE              EXCEP_AML (0x0023)
#define AE_AML_PROTOCOL                 EXCEP_AML (0x0024)
#define AE_AML_BUFFER_LENGTH            EXCEP_AML (0x0025)

#define AE_CODE_AML_MAX                 0x0025

/*
 * Internal exceptions used for control
 */
#define AE_CTRL_RETURN_VALUE            EXCEP_CTL (0x0001)
#define AE_CTRL_PENDING                 EXCEP_CTL (0x0002)
#define AE_CTRL_TERMINATE               EXCEP_CTL (0x0003)
#define AE_CTRL_TRUE                    EXCEP_CTL (0x0004)
#define AE_CTRL_FALSE                   EXCEP_CTL (0x0005)
#define AE_CTRL_DEPTH                   EXCEP_CTL (0x0006)
#define AE_CTRL_END                     EXCEP_CTL (0x0007)
#define AE_CTRL_TRANSFER                EXCEP_CTL (0x0008)
#define AE_CTRL_BREAK                   EXCEP_CTL (0x0009)
#define AE_CTRL_CONTINUE                EXCEP_CTL (0x000A)
#define AE_CTRL_PARSE_CONTINUE          EXCEP_CTL (0x000B)
#define AE_CTRL_PARSE_PENDING           EXCEP_CTL (0x000C)

#define AE_CODE_CTRL_MAX                0x000C

/* Exception strings for acpi_format_exception */

#ifdef ACPI_DEFINE_EXCEPTION_TABLE

/*
 * String versions of the exception codes above
 * These strings must match the corresponding defines exactly
 */
static const struct acpi_exception_info acpi_gbl_exception_names_env[] = {
	EXCEP_TXT("AE_OK", "No error"),
	EXCEP_TXT("AE_ERROR", "Unspecified error"),
	EXCEP_TXT("AE_NO_ACPI_TABLES", "ACPI tables could not be found"),
	EXCEP_TXT("AE_NO_NAMESPACE", "A namespace has not been loaded"),
	EXCEP_TXT("AE_NO_MEMORY", "Insufficient dynamic memory"),
	EXCEP_TXT("AE_NOT_FOUND", "A requested entity is not found"),
	EXCEP_TXT("AE_NOT_EXIST", "A required entity does not exist"),
	EXCEP_TXT("AE_ALREADY_EXISTS", "An entity already exists"),
	EXCEP_TXT("AE_TYPE", "The object type is incorrect"),
	EXCEP_TXT("AE_NULL_OBJECT", "A required object was missing"),
	EXCEP_TXT("AE_NULL_ENTRY", "The requested object does not exist"),
	EXCEP_TXT("AE_BUFFER_OVERFLOW", "The buffer provided is too small"),
	EXCEP_TXT("AE_STACK_OVERFLOW", "An internal stack overflowed"),
	EXCEP_TXT("AE_STACK_UNDERFLOW", "An internal stack underflowed"),
	EXCEP_TXT("AE_NOT_IMPLEMENTED", "The feature is not implemented"),
	EXCEP_TXT("AE_SUPPORT", "The feature is not supported"),
	EXCEP_TXT("AE_LIMIT", "A predefined limit was exceeded"),
	EXCEP_TXT("AE_TIME", "A time limit or timeout expired"),
	EXCEP_TXT("AE_ACQUIRE_DEADLOCK",
		  "Internal error, attempt was made to acquire a mutex in improper order"),
	EXCEP_TXT("AE_RELEASE_DEADLOCK",
		  "Internal error, attempt was made to release a mutex in improper order"),
	EXCEP_TXT("AE_NOT_ACQUIRED",
		  "An attempt to release a mutex or Global Lock without a previous acquire"),
	EXCEP_TXT("AE_ALREADY_ACQUIRED",
		  "Internal error, attempt was made to acquire a mutex twice"),
	EXCEP_TXT("AE_NO_HARDWARE_RESPONSE",
		  "Hardware did not respond after an I/O operation"),
	EXCEP_TXT("AE_NO_GLOBAL_LOCK", "There is no FACS Global Lock"),
	EXCEP_TXT("AE_ABORT_METHOD", "A control method was aborted"),
	EXCEP_TXT("AE_SAME_HANDLER",
		  "Attempt was made to install the same handler that is already installed"),
	EXCEP_TXT("AE_NO_HANDLER",
		  "A handler for the operation is not installed"),
	EXCEP_TXT("AE_OWNER_ID_LIMIT",
		  "There are no more Owner IDs available for ACPI tables or control methods"),
	EXCEP_TXT("AE_NOT_CONFIGURED",
		  "The interface is not part of the current subsystem configuration"),
	EXCEP_TXT("AE_ACCESS", "Permission denied for the requested operation"),
	EXCEP_TXT("AE_IO_ERROR", "An I/O error occurred"),
	EXCEP_TXT("AE_NUMERIC_OVERFLOW",
		  "Overflow during string-to-integer conversion"),
	EXCEP_TXT("AE_HEX_OVERFLOW",
		  "Overflow during ASCII hex-to-binary conversion"),
	EXCEP_TXT("AE_DECIMAL_OVERFLOW",
		  "Overflow during ASCII decimal-to-binary conversion"),
	EXCEP_TXT("AE_OCTAL_OVERFLOW",
		  "Overflow during ASCII octal-to-binary conversion"),
	EXCEP_TXT("AE_END_OF_TABLE", "Reached the end of table")
};

static const struct acpi_exception_info acpi_gbl_exception_names_pgm[] = {
	EXCEP_TXT(NULL, NULL),
	EXCEP_TXT("AE_BAD_PARAMETER", "A parameter is out of range or invalid"),
	EXCEP_TXT("AE_BAD_CHARACTER",
		  "An invalid character was found in a name"),
	EXCEP_TXT("AE_BAD_PATHNAME",
		  "An invalid character was found in a pathname"),
	EXCEP_TXT("AE_BAD_DATA",
		  "A package or buffer contained incorrect data"),
	EXCEP_TXT("AE_BAD_HEX_CONSTANT", "Invalid character in a Hex constant"),
	EXCEP_TXT("AE_BAD_OCTAL_CONSTANT",
		  "Invalid character in an Octal constant"),
	EXCEP_TXT("AE_BAD_DECIMAL_CONSTANT",
		  "Invalid character in a Decimal constant"),
	EXCEP_TXT("AE_MISSING_ARGUMENTS",
		  "Too few arguments were passed to a control method"),
	EXCEP_TXT("AE_BAD_ADDRESS", "An illegal null I/O address")
};

static const struct acpi_exception_info acpi_gbl_exception_names_tbl[] = {
	EXCEP_TXT(NULL, NULL),
	EXCEP_TXT("AE_BAD_SIGNATURE", "An ACPI table has an invalid signature"),
	EXCEP_TXT("AE_BAD_HEADER", "Invalid field in an ACPI table header"),
	EXCEP_TXT("AE_BAD_CHECKSUM", "An ACPI table checksum is not correct"),
	EXCEP_TXT("AE_BAD_VALUE", "An invalid value was found in a table"),
	EXCEP_TXT("AE_INVALID_TABLE_LENGTH",
		  "The FADT or FACS has improper length")
};

static const struct acpi_exception_info acpi_gbl_exception_names_aml[] = {
	EXCEP_TXT(NULL, NULL),
	EXCEP_TXT("AE_AML_BAD_OPCODE", "Invalid AML opcode encountered"),
	EXCEP_TXT("AE_AML_NO_OPERAND", "A required operand is missing"),
	EXCEP_TXT("AE_AML_OPERAND_TYPE",
		  "An operand of an incorrect type was encountered"),
	EXCEP_TXT("AE_AML_OPERAND_VALUE",
		  "The operand had an inappropriate or invalid value"),
	EXCEP_TXT("AE_AML_UNINITIALIZED_LOCAL",
		  "Method tried to use an uninitialized local variable"),
	EXCEP_TXT("AE_AML_UNINITIALIZED_ARG",
		  "Method tried to use an uninitialized argument"),
	EXCEP_TXT("AE_AML_UNINITIALIZED_ELEMENT",
		  "Method tried to use an empty package element"),
	EXCEP_TXT("AE_AML_NUMERIC_OVERFLOW",
		  "Overflow during BCD conversion or other"),
	EXCEP_TXT("AE_AML_REGION_LIMIT",
		  "Tried to access beyond the end of an Operation Region"),
	EXCEP_TXT("AE_AML_BUFFER_LIMIT",
		  "Tried to access beyond the end of a buffer"),
	EXCEP_TXT("AE_AML_PACKAGE_LIMIT",
		  "Tried to access beyond the end of a package"),
	EXCEP_TXT("AE_AML_DIVIDE_BY_ZERO",
		  "During execution of AML Divide operator"),
	EXCEP_TXT("AE_AML_BAD_NAME",
		  "An ACPI name contains invalid character(s)"),
	EXCEP_TXT("AE_AML_NAME_NOT_FOUND",
		  "Could not resolve a named reference"),
	EXCEP_TXT("AE_AML_INTERNAL",
		  "An internal error within the interpreter"),
	EXCEP_TXT("AE_AML_INVALID_SPACE_ID",
		  "An Operation Region SpaceID is invalid"),
	EXCEP_TXT("AE_AML_STRING_LIMIT",
		  "String is longer than 200 characters"),
	EXCEP_TXT("AE_AML_NO_RETURN_VALUE",
		  "A method did not return a required value"),
	EXCEP_TXT("AE_AML_METHOD_LIMIT",
		  "A control method reached the maximum reentrancy limit of 255"),
	EXCEP_TXT("AE_AML_NOT_OWNER",
		  "A thread tried to release a mutex that it does not own"),
	EXCEP_TXT("AE_AML_MUTEX_ORDER", "Mutex SyncLevel release mismatch"),
	EXCEP_TXT("AE_AML_MUTEX_NOT_ACQUIRED",
		  "Attempt to release a mutex that was not previously acquired"),
	EXCEP_TXT("AE_AML_INVALID_RESOURCE_TYPE",
		  "Invalid resource type in resource list"),
	EXCEP_TXT("AE_AML_INVALID_INDEX",
		  "Invalid Argx or Localx (x too large)"),
	EXCEP_TXT("AE_AML_REGISTER_LIMIT",
		  "Bank value or Index value beyond range of register"),
	EXCEP_TXT("AE_AML_NO_WHILE", "Break or Continue without a While"),
	EXCEP_TXT("AE_AML_ALIGNMENT",
		  "Non-aligned memory transfer on platform that does not support this"),
	EXCEP_TXT("AE_AML_NO_RESOURCE_END_TAG",
		  "No End Tag in a resource list"),
	EXCEP_TXT("AE_AML_BAD_RESOURCE_VALUE",
		  "Invalid value of a resource element"),
	EXCEP_TXT("AE_AML_CIRCULAR_REFERENCE",
		  "Two references refer to each other"),
	EXCEP_TXT("AE_AML_BAD_RESOURCE_LENGTH",
		  "The length of a Resource Descriptor in the AML is incorrect"),
	EXCEP_TXT("AE_AML_ILLEGAL_ADDRESS",
		  "A memory, I/O, or PCI configuration address is invalid"),
	EXCEP_TXT("AE_AML_LOOP_TIMEOUT",
		  "An AML While loop exceeded the maximum execution time"),
	EXCEP_TXT("AE_AML_UNINITIALIZED_NODE",
		  "A namespace node is uninitialized or unresolved"),
	EXCEP_TXT("AE_AML_TARGET_TYPE",
		  "A target operand of an incorrect type was encountered"),
	EXCEP_TXT("AE_AML_PROTOCOL", "Violation of a fixed ACPI protocol"),
	EXCEP_TXT("AE_AML_BUFFER_LENGTH",
		  "The length of the buffer is invalid/incorrect")
};

static const struct acpi_exception_info acpi_gbl_exception_names_ctrl[] = {
	EXCEP_TXT(NULL, NULL),
	EXCEP_TXT("AE_CTRL_RETURN_VALUE", "A Method returned a value"),
	EXCEP_TXT("AE_CTRL_PENDING", "Method is calling another method"),
	EXCEP_TXT("AE_CTRL_TERMINATE", "Terminate the executing method"),
	EXCEP_TXT("AE_CTRL_TRUE", "An If or While predicate result"),
	EXCEP_TXT("AE_CTRL_FALSE", "An If or While predicate result"),
	EXCEP_TXT("AE_CTRL_DEPTH", "Maximum search depth has been reached"),
	EXCEP_TXT("AE_CTRL_END", "An If or While predicate is false"),
	EXCEP_TXT("AE_CTRL_TRANSFER", "Transfer control to called method"),
	EXCEP_TXT("AE_CTRL_BREAK", "A Break has been executed"),
	EXCEP_TXT("AE_CTRL_CONTINUE", "A Continue has been executed"),
	EXCEP_TXT("AE_CTRL_PARSE_CONTINUE", "Used to skip over bad opcodes"),
	EXCEP_TXT("AE_CTRL_PARSE_PENDING", "Used to implement AML While loops")
};

#endif				/* EXCEPTION_TABLE */

#endif				/* __ACEXCEP_H__ */