Commit | Line | Data |
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1da177e4 LT |
1 | /****************************************************************************** |
2 | * | |
3 | * Module Name: exoparg2 - AML execution - opcodes with 2 arguments | |
4 | * | |
5 | *****************************************************************************/ | |
6 | ||
7 | /* | |
75a44ce0 | 8 | * Copyright (C) 2000 - 2008, Intel Corp. |
1da177e4 LT |
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 MERCHANTIBILITY 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 | ||
1da177e4 LT |
44 | #include <acpi/acpi.h> |
45 | #include <acpi/acparser.h> | |
46 | #include <acpi/acinterp.h> | |
47 | #include <acpi/acevents.h> | |
48 | #include <acpi/amlcode.h> | |
49 | ||
1da177e4 | 50 | #define _COMPONENT ACPI_EXECUTER |
4be44fcd | 51 | ACPI_MODULE_NAME("exoparg2") |
1da177e4 LT |
52 | |
53 | /*! | |
54 | * Naming convention for AML interpreter execution routines. | |
55 | * | |
56 | * The routines that begin execution of AML opcodes are named with a common | |
57 | * convention based upon the number of arguments, the number of target operands, | |
58 | * and whether or not a value is returned: | |
59 | * | |
60 | * AcpiExOpcode_xA_yT_zR | |
61 | * | |
62 | * Where: | |
63 | * | |
64 | * xA - ARGUMENTS: The number of arguments (input operands) that are | |
65 | * required for this opcode type (1 through 6 args). | |
66 | * yT - TARGETS: The number of targets (output operands) that are required | |
67 | * for this opcode type (0, 1, or 2 targets). | |
68 | * zR - RETURN VALUE: Indicates whether this opcode type returns a value | |
69 | * as the function return (0 or 1). | |
70 | * | |
71 | * The AcpiExOpcode* functions are called via the Dispatcher component with | |
72 | * fully resolved operands. | |
73 | !*/ | |
1da177e4 LT |
74 | /******************************************************************************* |
75 | * | |
76 | * FUNCTION: acpi_ex_opcode_2A_0T_0R | |
77 | * | |
78 | * PARAMETERS: walk_state - Current walk state | |
79 | * | |
80 | * RETURN: Status | |
81 | * | |
82 | * DESCRIPTION: Execute opcode with two arguments, no target, and no return | |
83 | * value. | |
84 | * | |
85 | * ALLOCATION: Deletes both operands | |
86 | * | |
87 | ******************************************************************************/ | |
4be44fcd | 88 | acpi_status acpi_ex_opcode_2A_0T_0R(struct acpi_walk_state *walk_state) |
1da177e4 | 89 | { |
4be44fcd LB |
90 | union acpi_operand_object **operand = &walk_state->operands[0]; |
91 | struct acpi_namespace_node *node; | |
92 | u32 value; | |
93 | acpi_status status = AE_OK; | |
1da177e4 | 94 | |
b229cf92 | 95 | ACPI_FUNCTION_TRACE_STR(ex_opcode_2A_0T_0R, |
4be44fcd | 96 | acpi_ps_get_opcode_name(walk_state->opcode)); |
1da177e4 LT |
97 | |
98 | /* Examine the opcode */ | |
99 | ||
100 | switch (walk_state->opcode) { | |
4be44fcd | 101 | case AML_NOTIFY_OP: /* Notify (notify_object, notify_value) */ |
1da177e4 LT |
102 | |
103 | /* The first operand is a namespace node */ | |
104 | ||
4be44fcd | 105 | node = (struct acpi_namespace_node *)operand[0]; |
1da177e4 LT |
106 | |
107 | /* Second value is the notify value */ | |
108 | ||
109 | value = (u32) operand[1]->integer.value; | |
110 | ||
44f6c012 | 111 | /* Are notifies allowed on this object? */ |
1da177e4 | 112 | |
4be44fcd | 113 | if (!acpi_ev_is_notify_object(node)) { |
b8e4d893 BM |
114 | ACPI_ERROR((AE_INFO, |
115 | "Unexpected notify object type [%s]", | |
116 | acpi_ut_get_type_name(node->type))); | |
1da177e4 LT |
117 | |
118 | status = AE_AML_OPERAND_TYPE; | |
119 | break; | |
120 | } | |
1da177e4 LT |
121 | #ifdef ACPI_GPE_NOTIFY_CHECK |
122 | /* | |
123 | * GPE method wake/notify check. Here, we want to ensure that we | |
b229cf92 | 124 | * don't receive any "DeviceWake" Notifies from a GPE _Lxx or _Exx |
1da177e4 LT |
125 | * GPE method during system runtime. If we do, the GPE is marked |
126 | * as "wake-only" and disabled. | |
127 | * | |
128 | * 1) Is the Notify() value == device_wake? | |
129 | * 2) Is this a GPE deferred method? (An _Lxx or _Exx method) | |
130 | * 3) Did the original GPE happen at system runtime? | |
131 | * (versus during wake) | |
132 | * | |
133 | * If all three cases are true, this is a wake-only GPE that should | |
134 | * be disabled at runtime. | |
135 | */ | |
4be44fcd LB |
136 | if (value == 2) { /* device_wake */ |
137 | status = | |
138 | acpi_ev_check_for_wake_only_gpe(walk_state-> | |
139 | gpe_event_info); | |
140 | if (ACPI_FAILURE(status)) { | |
52fc0b02 | 141 | |
1da177e4 LT |
142 | /* AE_WAKE_ONLY_GPE only error, means ignore this notify */ |
143 | ||
4be44fcd | 144 | return_ACPI_STATUS(AE_OK) |
1da177e4 LT |
145 | } |
146 | } | |
147 | #endif | |
148 | ||
149 | /* | |
150 | * Dispatch the notify to the appropriate handler | |
151 | * NOTE: the request is queued for execution after this method | |
152 | * completes. The notify handlers are NOT invoked synchronously | |
153 | * from this thread -- because handlers may in turn run other | |
154 | * control methods. | |
155 | */ | |
4be44fcd | 156 | status = acpi_ev_queue_notify_request(node, value); |
1da177e4 LT |
157 | break; |
158 | ||
1da177e4 LT |
159 | default: |
160 | ||
b8e4d893 BM |
161 | ACPI_ERROR((AE_INFO, "Unknown AML opcode %X", |
162 | walk_state->opcode)); | |
1da177e4 LT |
163 | status = AE_AML_BAD_OPCODE; |
164 | } | |
165 | ||
4be44fcd | 166 | return_ACPI_STATUS(status); |
1da177e4 LT |
167 | } |
168 | ||
1da177e4 LT |
169 | /******************************************************************************* |
170 | * | |
171 | * FUNCTION: acpi_ex_opcode_2A_2T_1R | |
172 | * | |
173 | * PARAMETERS: walk_state - Current walk state | |
174 | * | |
175 | * RETURN: Status | |
176 | * | |
177 | * DESCRIPTION: Execute a dyadic operator (2 operands) with 2 output targets | |
178 | * and one implicit return value. | |
179 | * | |
180 | ******************************************************************************/ | |
181 | ||
4be44fcd | 182 | acpi_status acpi_ex_opcode_2A_2T_1R(struct acpi_walk_state *walk_state) |
1da177e4 | 183 | { |
4be44fcd LB |
184 | union acpi_operand_object **operand = &walk_state->operands[0]; |
185 | union acpi_operand_object *return_desc1 = NULL; | |
186 | union acpi_operand_object *return_desc2 = NULL; | |
187 | acpi_status status; | |
1da177e4 | 188 | |
b229cf92 | 189 | ACPI_FUNCTION_TRACE_STR(ex_opcode_2A_2T_1R, |
4be44fcd | 190 | acpi_ps_get_opcode_name(walk_state->opcode)); |
1da177e4 | 191 | |
44f6c012 RM |
192 | /* Execute the opcode */ |
193 | ||
1da177e4 | 194 | switch (walk_state->opcode) { |
44f6c012 RM |
195 | case AML_DIVIDE_OP: |
196 | ||
197 | /* Divide (Dividend, Divisor, remainder_result quotient_result) */ | |
1da177e4 | 198 | |
4be44fcd LB |
199 | return_desc1 = |
200 | acpi_ut_create_internal_object(ACPI_TYPE_INTEGER); | |
1da177e4 LT |
201 | if (!return_desc1) { |
202 | status = AE_NO_MEMORY; | |
203 | goto cleanup; | |
204 | } | |
205 | ||
4be44fcd LB |
206 | return_desc2 = |
207 | acpi_ut_create_internal_object(ACPI_TYPE_INTEGER); | |
1da177e4 LT |
208 | if (!return_desc2) { |
209 | status = AE_NO_MEMORY; | |
210 | goto cleanup; | |
211 | } | |
212 | ||
213 | /* Quotient to return_desc1, remainder to return_desc2 */ | |
214 | ||
4be44fcd LB |
215 | status = acpi_ut_divide(operand[0]->integer.value, |
216 | operand[1]->integer.value, | |
217 | &return_desc1->integer.value, | |
218 | &return_desc2->integer.value); | |
219 | if (ACPI_FAILURE(status)) { | |
1da177e4 LT |
220 | goto cleanup; |
221 | } | |
222 | break; | |
223 | ||
1da177e4 LT |
224 | default: |
225 | ||
b8e4d893 BM |
226 | ACPI_ERROR((AE_INFO, "Unknown AML opcode %X", |
227 | walk_state->opcode)); | |
1da177e4 LT |
228 | status = AE_AML_BAD_OPCODE; |
229 | goto cleanup; | |
230 | } | |
231 | ||
1da177e4 LT |
232 | /* Store the results to the target reference operands */ |
233 | ||
4be44fcd LB |
234 | status = acpi_ex_store(return_desc2, operand[2], walk_state); |
235 | if (ACPI_FAILURE(status)) { | |
1da177e4 LT |
236 | goto cleanup; |
237 | } | |
238 | ||
4be44fcd LB |
239 | status = acpi_ex_store(return_desc1, operand[3], walk_state); |
240 | if (ACPI_FAILURE(status)) { | |
1da177e4 LT |
241 | goto cleanup; |
242 | } | |
243 | ||
4be44fcd | 244 | cleanup: |
1da177e4 LT |
245 | /* |
246 | * Since the remainder is not returned indirectly, remove a reference to | |
247 | * it. Only the quotient is returned indirectly. | |
248 | */ | |
4be44fcd | 249 | acpi_ut_remove_reference(return_desc2); |
1da177e4 | 250 | |
4be44fcd | 251 | if (ACPI_FAILURE(status)) { |
52fc0b02 | 252 | |
1da177e4 LT |
253 | /* Delete the return object */ |
254 | ||
4be44fcd | 255 | acpi_ut_remove_reference(return_desc1); |
1da177e4 LT |
256 | } |
257 | ||
4b6e16cf BM |
258 | /* Save return object (the remainder) on success */ |
259 | ||
260 | else { | |
261 | walk_state->result_obj = return_desc1; | |
262 | } | |
263 | ||
4be44fcd | 264 | return_ACPI_STATUS(status); |
1da177e4 LT |
265 | } |
266 | ||
1da177e4 LT |
267 | /******************************************************************************* |
268 | * | |
269 | * FUNCTION: acpi_ex_opcode_2A_1T_1R | |
270 | * | |
271 | * PARAMETERS: walk_state - Current walk state | |
272 | * | |
273 | * RETURN: Status | |
274 | * | |
275 | * DESCRIPTION: Execute opcode with two arguments, one target, and a return | |
276 | * value. | |
277 | * | |
278 | ******************************************************************************/ | |
279 | ||
4be44fcd | 280 | acpi_status acpi_ex_opcode_2A_1T_1R(struct acpi_walk_state *walk_state) |
1da177e4 | 281 | { |
4be44fcd LB |
282 | union acpi_operand_object **operand = &walk_state->operands[0]; |
283 | union acpi_operand_object *return_desc = NULL; | |
284 | acpi_integer index; | |
285 | acpi_status status = AE_OK; | |
286 | acpi_size length; | |
1da177e4 | 287 | |
b229cf92 | 288 | ACPI_FUNCTION_TRACE_STR(ex_opcode_2A_1T_1R, |
4be44fcd | 289 | acpi_ps_get_opcode_name(walk_state->opcode)); |
1da177e4 | 290 | |
44f6c012 RM |
291 | /* Execute the opcode */ |
292 | ||
1da177e4 | 293 | if (walk_state->op_info->flags & AML_MATH) { |
52fc0b02 | 294 | |
1da177e4 LT |
295 | /* All simple math opcodes (add, etc.) */ |
296 | ||
4be44fcd | 297 | return_desc = acpi_ut_create_internal_object(ACPI_TYPE_INTEGER); |
1da177e4 LT |
298 | if (!return_desc) { |
299 | status = AE_NO_MEMORY; | |
300 | goto cleanup; | |
301 | } | |
302 | ||
4be44fcd LB |
303 | return_desc->integer.value = |
304 | acpi_ex_do_math_op(walk_state->opcode, | |
305 | operand[0]->integer.value, | |
306 | operand[1]->integer.value); | |
1da177e4 LT |
307 | goto store_result_to_target; |
308 | } | |
309 | ||
1da177e4 | 310 | switch (walk_state->opcode) { |
4be44fcd | 311 | case AML_MOD_OP: /* Mod (Dividend, Divisor, remainder_result (ACPI 2.0) */ |
1da177e4 | 312 | |
4be44fcd | 313 | return_desc = acpi_ut_create_internal_object(ACPI_TYPE_INTEGER); |
1da177e4 LT |
314 | if (!return_desc) { |
315 | status = AE_NO_MEMORY; | |
316 | goto cleanup; | |
317 | } | |
318 | ||
319 | /* return_desc will contain the remainder */ | |
320 | ||
4be44fcd LB |
321 | status = acpi_ut_divide(operand[0]->integer.value, |
322 | operand[1]->integer.value, | |
323 | NULL, &return_desc->integer.value); | |
1da177e4 LT |
324 | break; |
325 | ||
4be44fcd | 326 | case AML_CONCAT_OP: /* Concatenate (Data1, Data2, Result) */ |
1da177e4 | 327 | |
4be44fcd LB |
328 | status = acpi_ex_do_concatenate(operand[0], operand[1], |
329 | &return_desc, walk_state); | |
1da177e4 LT |
330 | break; |
331 | ||
4be44fcd | 332 | case AML_TO_STRING_OP: /* to_string (Buffer, Length, Result) (ACPI 2.0) */ |
1da177e4 LT |
333 | |
334 | /* | |
335 | * Input object is guaranteed to be a buffer at this point (it may have | |
44f6c012 RM |
336 | * been converted.) Copy the raw buffer data to a new object of |
337 | * type String. | |
1da177e4 LT |
338 | */ |
339 | ||
340 | /* | |
341 | * Get the length of the new string. It is the smallest of: | |
342 | * 1) Length of the input buffer | |
343 | * 2) Max length as specified in the to_string operator | |
344 | * 3) Length of input buffer up to a zero byte (null terminator) | |
345 | * | |
346 | * NOTE: A length of zero is ok, and will create a zero-length, null | |
347 | * terminated string. | |
348 | */ | |
349 | length = 0; | |
350 | while ((length < operand[0]->buffer.length) && | |
4be44fcd LB |
351 | (length < operand[1]->integer.value) && |
352 | (operand[0]->buffer.pointer[length])) { | |
1da177e4 | 353 | length++; |
1da177e4 LT |
354 | } |
355 | ||
356 | /* Allocate a new string object */ | |
357 | ||
4be44fcd | 358 | return_desc = acpi_ut_create_string_object(length); |
1da177e4 LT |
359 | if (!return_desc) { |
360 | status = AE_NO_MEMORY; | |
361 | goto cleanup; | |
362 | } | |
363 | ||
c51a4de8 BM |
364 | /* |
365 | * Copy the raw buffer data with no transform. | |
366 | * (NULL terminated already) | |
367 | */ | |
4be44fcd LB |
368 | ACPI_MEMCPY(return_desc->string.pointer, |
369 | operand[0]->buffer.pointer, length); | |
1da177e4 LT |
370 | break; |
371 | ||
44f6c012 RM |
372 | case AML_CONCAT_RES_OP: |
373 | ||
374 | /* concatenate_res_template (Buffer, Buffer, Result) (ACPI 2.0) */ | |
1da177e4 | 375 | |
4be44fcd LB |
376 | status = acpi_ex_concat_template(operand[0], operand[1], |
377 | &return_desc, walk_state); | |
1da177e4 LT |
378 | break; |
379 | ||
4be44fcd | 380 | case AML_INDEX_OP: /* Index (Source Index Result) */ |
1da177e4 LT |
381 | |
382 | /* Create the internal return object */ | |
383 | ||
4be44fcd LB |
384 | return_desc = |
385 | acpi_ut_create_internal_object(ACPI_TYPE_LOCAL_REFERENCE); | |
1da177e4 LT |
386 | if (!return_desc) { |
387 | status = AE_NO_MEMORY; | |
388 | goto cleanup; | |
389 | } | |
390 | ||
52fc0b02 BM |
391 | /* Initialize the Index reference object */ |
392 | ||
44f6c012 | 393 | index = operand[1]->integer.value; |
52fc0b02 BM |
394 | return_desc->reference.offset = (u32) index; |
395 | return_desc->reference.opcode = AML_INDEX_OP; | |
44f6c012 | 396 | |
52fc0b02 BM |
397 | /* |
398 | * At this point, the Source operand is a String, Buffer, or Package. | |
399 | * Verify that the index is within range. | |
400 | */ | |
401 | switch (ACPI_GET_OBJECT_TYPE(operand[0])) { | |
402 | case ACPI_TYPE_STRING: | |
1da177e4 | 403 | |
52fc0b02 BM |
404 | if (index >= operand[0]->string.length) { |
405 | status = AE_AML_STRING_LIMIT; | |
406 | } | |
407 | ||
408 | return_desc->reference.target_type = | |
409 | ACPI_TYPE_BUFFER_FIELD; | |
410 | break; | |
411 | ||
412 | case ACPI_TYPE_BUFFER: | |
413 | ||
414 | if (index >= operand[0]->buffer.length) { | |
415 | status = AE_AML_BUFFER_LIMIT; | |
416 | } | |
417 | ||
418 | return_desc->reference.target_type = | |
419 | ACPI_TYPE_BUFFER_FIELD; | |
420 | break; | |
421 | ||
422 | case ACPI_TYPE_PACKAGE: | |
1da177e4 LT |
423 | |
424 | if (index >= operand[0]->package.count) { | |
1da177e4 | 425 | status = AE_AML_PACKAGE_LIMIT; |
1da177e4 LT |
426 | } |
427 | ||
428 | return_desc->reference.target_type = ACPI_TYPE_PACKAGE; | |
4be44fcd LB |
429 | return_desc->reference.where = |
430 | &operand[0]->package.elements[index]; | |
52fc0b02 | 431 | break; |
1da177e4 | 432 | |
52fc0b02 | 433 | default: |
1da177e4 | 434 | |
52fc0b02 BM |
435 | status = AE_AML_INTERNAL; |
436 | goto cleanup; | |
437 | } | |
438 | ||
439 | /* Failure means that the Index was beyond the end of the object */ | |
440 | ||
441 | if (ACPI_FAILURE(status)) { | |
442 | ACPI_EXCEPTION((AE_INFO, status, | |
443 | "Index (%X%8.8X) is beyond end of object", | |
444 | ACPI_FORMAT_UINT64(index))); | |
445 | goto cleanup; | |
1da177e4 LT |
446 | } |
447 | ||
448 | /* | |
8313524a | 449 | * Save the target object and add a reference to it for the life |
52fc0b02 | 450 | * of the index |
1da177e4 | 451 | */ |
8313524a | 452 | return_desc->reference.object = operand[0]; |
4be44fcd | 453 | acpi_ut_add_reference(operand[0]); |
1da177e4 | 454 | |
1da177e4 LT |
455 | /* Store the reference to the Target */ |
456 | ||
4be44fcd | 457 | status = acpi_ex_store(return_desc, operand[2], walk_state); |
1da177e4 LT |
458 | |
459 | /* Return the reference */ | |
460 | ||
461 | walk_state->result_obj = return_desc; | |
462 | goto cleanup; | |
463 | ||
1da177e4 LT |
464 | default: |
465 | ||
b8e4d893 BM |
466 | ACPI_ERROR((AE_INFO, "Unknown AML opcode %X", |
467 | walk_state->opcode)); | |
1da177e4 LT |
468 | status = AE_AML_BAD_OPCODE; |
469 | break; | |
470 | } | |
471 | ||
4be44fcd | 472 | store_result_to_target: |
1da177e4 | 473 | |
4be44fcd | 474 | if (ACPI_SUCCESS(status)) { |
1da177e4 LT |
475 | /* |
476 | * Store the result of the operation (which is now in return_desc) into | |
477 | * the Target descriptor. | |
478 | */ | |
4be44fcd LB |
479 | status = acpi_ex_store(return_desc, operand[2], walk_state); |
480 | if (ACPI_FAILURE(status)) { | |
1da177e4 LT |
481 | goto cleanup; |
482 | } | |
483 | ||
484 | if (!walk_state->result_obj) { | |
485 | walk_state->result_obj = return_desc; | |
486 | } | |
487 | } | |
488 | ||
4be44fcd | 489 | cleanup: |
1da177e4 LT |
490 | |
491 | /* Delete return object on error */ | |
492 | ||
4be44fcd LB |
493 | if (ACPI_FAILURE(status)) { |
494 | acpi_ut_remove_reference(return_desc); | |
4b6e16cf | 495 | walk_state->result_obj = NULL; |
1da177e4 LT |
496 | } |
497 | ||
4be44fcd | 498 | return_ACPI_STATUS(status); |
1da177e4 LT |
499 | } |
500 | ||
1da177e4 LT |
501 | /******************************************************************************* |
502 | * | |
503 | * FUNCTION: acpi_ex_opcode_2A_0T_1R | |
504 | * | |
505 | * PARAMETERS: walk_state - Current walk state | |
506 | * | |
507 | * RETURN: Status | |
508 | * | |
509 | * DESCRIPTION: Execute opcode with 2 arguments, no target, and a return value | |
510 | * | |
511 | ******************************************************************************/ | |
512 | ||
4be44fcd | 513 | acpi_status acpi_ex_opcode_2A_0T_1R(struct acpi_walk_state *walk_state) |
1da177e4 | 514 | { |
4be44fcd LB |
515 | union acpi_operand_object **operand = &walk_state->operands[0]; |
516 | union acpi_operand_object *return_desc = NULL; | |
517 | acpi_status status = AE_OK; | |
518 | u8 logical_result = FALSE; | |
1da177e4 | 519 | |
b229cf92 | 520 | ACPI_FUNCTION_TRACE_STR(ex_opcode_2A_0T_1R, |
4be44fcd | 521 | acpi_ps_get_opcode_name(walk_state->opcode)); |
1da177e4 LT |
522 | |
523 | /* Create the internal return object */ | |
524 | ||
4be44fcd | 525 | return_desc = acpi_ut_create_internal_object(ACPI_TYPE_INTEGER); |
1da177e4 LT |
526 | if (!return_desc) { |
527 | status = AE_NO_MEMORY; | |
528 | goto cleanup; | |
529 | } | |
530 | ||
44f6c012 RM |
531 | /* Execute the Opcode */ |
532 | ||
533 | if (walk_state->op_info->flags & AML_LOGICAL_NUMERIC) { | |
52fc0b02 | 534 | |
44f6c012 RM |
535 | /* logical_op (Operand0, Operand1) */ |
536 | ||
4be44fcd LB |
537 | status = acpi_ex_do_logical_numeric_op(walk_state->opcode, |
538 | operand[0]->integer. | |
539 | value, | |
540 | operand[1]->integer. | |
541 | value, &logical_result); | |
1da177e4 | 542 | goto store_logical_result; |
4be44fcd | 543 | } else if (walk_state->op_info->flags & AML_LOGICAL) { |
52fc0b02 | 544 | |
44f6c012 RM |
545 | /* logical_op (Operand0, Operand1) */ |
546 | ||
4be44fcd LB |
547 | status = acpi_ex_do_logical_op(walk_state->opcode, operand[0], |
548 | operand[1], &logical_result); | |
1da177e4 LT |
549 | goto store_logical_result; |
550 | } | |
551 | ||
1da177e4 | 552 | switch (walk_state->opcode) { |
4be44fcd | 553 | case AML_ACQUIRE_OP: /* Acquire (mutex_object, Timeout) */ |
1da177e4 | 554 | |
4be44fcd LB |
555 | status = |
556 | acpi_ex_acquire_mutex(operand[1], operand[0], walk_state); | |
1da177e4 | 557 | if (status == AE_TIME) { |
4be44fcd | 558 | logical_result = TRUE; /* TRUE = Acquire timed out */ |
1da177e4 LT |
559 | status = AE_OK; |
560 | } | |
561 | break; | |
562 | ||
4be44fcd | 563 | case AML_WAIT_OP: /* Wait (event_object, Timeout) */ |
1da177e4 | 564 | |
4be44fcd | 565 | status = acpi_ex_system_wait_event(operand[1], operand[0]); |
1da177e4 | 566 | if (status == AE_TIME) { |
4be44fcd | 567 | logical_result = TRUE; /* TRUE, Wait timed out */ |
1da177e4 LT |
568 | status = AE_OK; |
569 | } | |
570 | break; | |
571 | ||
1da177e4 LT |
572 | default: |
573 | ||
b8e4d893 BM |
574 | ACPI_ERROR((AE_INFO, "Unknown AML opcode %X", |
575 | walk_state->opcode)); | |
1da177e4 LT |
576 | status = AE_AML_BAD_OPCODE; |
577 | goto cleanup; | |
578 | } | |
579 | ||
4be44fcd | 580 | store_logical_result: |
1da177e4 LT |
581 | /* |
582 | * Set return value to according to logical_result. logical TRUE (all ones) | |
583 | * Default is FALSE (zero) | |
584 | */ | |
585 | if (logical_result) { | |
586 | return_desc->integer.value = ACPI_INTEGER_MAX; | |
587 | } | |
588 | ||
4be44fcd | 589 | cleanup: |
1da177e4 LT |
590 | |
591 | /* Delete return object on error */ | |
592 | ||
4be44fcd LB |
593 | if (ACPI_FAILURE(status)) { |
594 | acpi_ut_remove_reference(return_desc); | |
1da177e4 LT |
595 | } |
596 | ||
4b6e16cf BM |
597 | /* Save return object on success */ |
598 | ||
599 | else { | |
600 | walk_state->result_obj = return_desc; | |
601 | } | |
602 | ||
4be44fcd | 603 | return_ACPI_STATUS(status); |
1da177e4 | 604 | } |