Commit | Line | Data |
---|---|---|
42f8fb75 BM |
1 | /****************************************************************************** |
2 | * | |
3 | * Module Name: psobject - Support for parse objects | |
4 | * | |
5 | *****************************************************************************/ | |
6 | ||
7 | /* | |
82a80941 | 8 | * Copyright (C) 2000 - 2015, Intel Corp. |
42f8fb75 BM |
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 | ||
44 | #include <acpi/acpi.h> | |
45 | #include "accommon.h" | |
46 | #include "acparser.h" | |
47 | #include "amlcode.h" | |
48 | ||
49 | #define _COMPONENT ACPI_PARSER | |
50 | ACPI_MODULE_NAME("psobject") | |
51 | ||
52 | /* Local prototypes */ | |
53 | static acpi_status acpi_ps_get_aml_opcode(struct acpi_walk_state *walk_state); | |
54 | ||
55 | /******************************************************************************* | |
56 | * | |
57 | * FUNCTION: acpi_ps_get_aml_opcode | |
58 | * | |
59 | * PARAMETERS: walk_state - Current state | |
60 | * | |
61 | * RETURN: Status | |
62 | * | |
63 | * DESCRIPTION: Extract the next AML opcode from the input stream. | |
64 | * | |
65 | ******************************************************************************/ | |
66 | ||
67 | static acpi_status acpi_ps_get_aml_opcode(struct acpi_walk_state *walk_state) | |
68 | { | |
69 | ||
70 | ACPI_FUNCTION_TRACE_PTR(ps_get_aml_opcode, walk_state); | |
71 | ||
72 | walk_state->aml_offset = | |
73 | (u32)ACPI_PTR_DIFF(walk_state->parser_state.aml, | |
74 | walk_state->parser_state.aml_start); | |
75 | walk_state->opcode = acpi_ps_peek_opcode(&(walk_state->parser_state)); | |
76 | ||
77 | /* | |
78 | * First cut to determine what we have found: | |
79 | * 1) A valid AML opcode | |
80 | * 2) A name string | |
81 | * 3) An unknown/invalid opcode | |
82 | */ | |
83 | walk_state->op_info = acpi_ps_get_opcode_info(walk_state->opcode); | |
84 | ||
85 | switch (walk_state->op_info->class) { | |
86 | case AML_CLASS_ASCII: | |
87 | case AML_CLASS_PREFIX: | |
88 | /* | |
89 | * Starts with a valid prefix or ASCII char, this is a name | |
90 | * string. Convert the bare name string to a namepath. | |
91 | */ | |
92 | walk_state->opcode = AML_INT_NAMEPATH_OP; | |
93 | walk_state->arg_types = ARGP_NAMESTRING; | |
94 | break; | |
95 | ||
96 | case AML_CLASS_UNKNOWN: | |
97 | ||
98 | /* The opcode is unrecognized. Complain and skip unknown opcodes */ | |
99 | ||
100 | if (walk_state->pass_number == 2) { | |
101 | ACPI_ERROR((AE_INFO, | |
102 | "Unknown opcode 0x%.2X at table offset 0x%.4X, ignoring", | |
103 | walk_state->opcode, | |
104 | (u32)(walk_state->aml_offset + | |
105 | sizeof(struct acpi_table_header)))); | |
106 | ||
107 | ACPI_DUMP_BUFFER((walk_state->parser_state.aml - 16), | |
108 | 48); | |
109 | ||
110 | #ifdef ACPI_ASL_COMPILER | |
111 | /* | |
112 | * This is executed for the disassembler only. Output goes | |
113 | * to the disassembled ASL output file. | |
114 | */ | |
115 | acpi_os_printf | |
116 | ("/*\nError: Unknown opcode 0x%.2X at table offset 0x%.4X, context:\n", | |
117 | walk_state->opcode, | |
118 | (u32)(walk_state->aml_offset + | |
119 | sizeof(struct acpi_table_header))); | |
120 | ||
121 | /* Dump the context surrounding the invalid opcode */ | |
122 | ||
123 | acpi_ut_dump_buffer(((u8 *)walk_state->parser_state. | |
124 | aml - 16), 48, DB_BYTE_DISPLAY, | |
125 | (walk_state->aml_offset + | |
126 | sizeof(struct acpi_table_header) - | |
127 | 16)); | |
128 | acpi_os_printf(" */\n"); | |
129 | #endif | |
130 | } | |
131 | ||
132 | /* Increment past one-byte or two-byte opcode */ | |
133 | ||
134 | walk_state->parser_state.aml++; | |
135 | if (walk_state->opcode > 0xFF) { /* Can only happen if first byte is 0x5B */ | |
136 | walk_state->parser_state.aml++; | |
137 | } | |
138 | ||
139 | return_ACPI_STATUS(AE_CTRL_PARSE_CONTINUE); | |
140 | ||
141 | default: | |
142 | ||
143 | /* Found opcode info, this is a normal opcode */ | |
144 | ||
145 | walk_state->parser_state.aml += | |
146 | acpi_ps_get_opcode_size(walk_state->opcode); | |
147 | walk_state->arg_types = walk_state->op_info->parse_args; | |
148 | break; | |
149 | } | |
150 | ||
151 | return_ACPI_STATUS(AE_OK); | |
152 | } | |
153 | ||
154 | /******************************************************************************* | |
155 | * | |
156 | * FUNCTION: acpi_ps_build_named_op | |
157 | * | |
158 | * PARAMETERS: walk_state - Current state | |
159 | * aml_op_start - Begin of named Op in AML | |
160 | * unnamed_op - Early Op (not a named Op) | |
161 | * op - Returned Op | |
162 | * | |
163 | * RETURN: Status | |
164 | * | |
165 | * DESCRIPTION: Parse a named Op | |
166 | * | |
167 | ******************************************************************************/ | |
168 | ||
169 | acpi_status | |
170 | acpi_ps_build_named_op(struct acpi_walk_state *walk_state, | |
171 | u8 *aml_op_start, | |
172 | union acpi_parse_object *unnamed_op, | |
173 | union acpi_parse_object **op) | |
174 | { | |
175 | acpi_status status = AE_OK; | |
176 | union acpi_parse_object *arg = NULL; | |
177 | ||
178 | ACPI_FUNCTION_TRACE_PTR(ps_build_named_op, walk_state); | |
179 | ||
180 | unnamed_op->common.value.arg = NULL; | |
181 | unnamed_op->common.arg_list_length = 0; | |
182 | unnamed_op->common.aml_opcode = walk_state->opcode; | |
183 | ||
184 | /* | |
185 | * Get and append arguments until we find the node that contains | |
186 | * the name (the type ARGP_NAME). | |
187 | */ | |
188 | while (GET_CURRENT_ARG_TYPE(walk_state->arg_types) && | |
189 | (GET_CURRENT_ARG_TYPE(walk_state->arg_types) != ARGP_NAME)) { | |
190 | status = | |
191 | acpi_ps_get_next_arg(walk_state, | |
192 | &(walk_state->parser_state), | |
193 | GET_CURRENT_ARG_TYPE(walk_state-> | |
194 | arg_types), &arg); | |
195 | if (ACPI_FAILURE(status)) { | |
196 | return_ACPI_STATUS(status); | |
197 | } | |
198 | ||
199 | acpi_ps_append_arg(unnamed_op, arg); | |
200 | INCREMENT_ARG_LIST(walk_state->arg_types); | |
201 | } | |
202 | ||
203 | /* | |
204 | * Make sure that we found a NAME and didn't run out of arguments | |
205 | */ | |
206 | if (!GET_CURRENT_ARG_TYPE(walk_state->arg_types)) { | |
207 | return_ACPI_STATUS(AE_AML_NO_OPERAND); | |
208 | } | |
209 | ||
210 | /* We know that this arg is a name, move to next arg */ | |
211 | ||
212 | INCREMENT_ARG_LIST(walk_state->arg_types); | |
213 | ||
214 | /* | |
215 | * Find the object. This will either insert the object into | |
216 | * the namespace or simply look it up | |
217 | */ | |
218 | walk_state->op = NULL; | |
219 | ||
220 | status = walk_state->descending_callback(walk_state, op); | |
221 | if (ACPI_FAILURE(status)) { | |
22b5afce BM |
222 | if (status != AE_CTRL_TERMINATE) { |
223 | ACPI_EXCEPTION((AE_INFO, status, | |
224 | "During name lookup/catalog")); | |
225 | } | |
42f8fb75 BM |
226 | return_ACPI_STATUS(status); |
227 | } | |
228 | ||
229 | if (!*op) { | |
230 | return_ACPI_STATUS(AE_CTRL_PARSE_CONTINUE); | |
231 | } | |
232 | ||
233 | status = acpi_ps_next_parse_state(walk_state, *op, status); | |
234 | if (ACPI_FAILURE(status)) { | |
235 | if (status == AE_CTRL_PENDING) { | |
22b5afce | 236 | status = AE_CTRL_PARSE_PENDING; |
42f8fb75 BM |
237 | } |
238 | return_ACPI_STATUS(status); | |
239 | } | |
240 | ||
241 | acpi_ps_append_arg(*op, unnamed_op->common.value.arg); | |
242 | ||
243 | if ((*op)->common.aml_opcode == AML_REGION_OP || | |
244 | (*op)->common.aml_opcode == AML_DATA_REGION_OP) { | |
245 | /* | |
246 | * Defer final parsing of an operation_region body, because we don't | |
247 | * have enough info in the first pass to parse it correctly (i.e., | |
248 | * there may be method calls within the term_arg elements of the body.) | |
249 | * | |
250 | * However, we must continue parsing because the opregion is not a | |
251 | * standalone package -- we don't know where the end is at this point. | |
252 | * | |
253 | * (Length is unknown until parse of the body complete) | |
254 | */ | |
255 | (*op)->named.data = aml_op_start; | |
256 | (*op)->named.length = 0; | |
257 | } | |
258 | ||
259 | return_ACPI_STATUS(AE_OK); | |
260 | } | |
261 | ||
262 | /******************************************************************************* | |
263 | * | |
264 | * FUNCTION: acpi_ps_create_op | |
265 | * | |
266 | * PARAMETERS: walk_state - Current state | |
267 | * aml_op_start - Op start in AML | |
268 | * new_op - Returned Op | |
269 | * | |
270 | * RETURN: Status | |
271 | * | |
272 | * DESCRIPTION: Get Op from AML | |
273 | * | |
274 | ******************************************************************************/ | |
275 | ||
276 | acpi_status | |
277 | acpi_ps_create_op(struct acpi_walk_state *walk_state, | |
278 | u8 *aml_op_start, union acpi_parse_object **new_op) | |
279 | { | |
280 | acpi_status status = AE_OK; | |
281 | union acpi_parse_object *op; | |
282 | union acpi_parse_object *named_op = NULL; | |
283 | union acpi_parse_object *parent_scope; | |
284 | u8 argument_count; | |
285 | const struct acpi_opcode_info *op_info; | |
286 | ||
287 | ACPI_FUNCTION_TRACE_PTR(ps_create_op, walk_state); | |
288 | ||
289 | status = acpi_ps_get_aml_opcode(walk_state); | |
290 | if (status == AE_CTRL_PARSE_CONTINUE) { | |
291 | return_ACPI_STATUS(AE_CTRL_PARSE_CONTINUE); | |
292 | } | |
293 | ||
294 | /* Create Op structure and append to parent's argument list */ | |
295 | ||
296 | walk_state->op_info = acpi_ps_get_opcode_info(walk_state->opcode); | |
297 | op = acpi_ps_alloc_op(walk_state->opcode); | |
298 | if (!op) { | |
299 | return_ACPI_STATUS(AE_NO_MEMORY); | |
300 | } | |
301 | ||
302 | if (walk_state->op_info->flags & AML_NAMED) { | |
303 | status = | |
304 | acpi_ps_build_named_op(walk_state, aml_op_start, op, | |
305 | &named_op); | |
306 | acpi_ps_free_op(op); | |
307 | if (ACPI_FAILURE(status)) { | |
308 | return_ACPI_STATUS(status); | |
309 | } | |
310 | ||
311 | *new_op = named_op; | |
312 | return_ACPI_STATUS(AE_OK); | |
313 | } | |
314 | ||
315 | /* Not a named opcode, just allocate Op and append to parent */ | |
316 | ||
317 | if (walk_state->op_info->flags & AML_CREATE) { | |
318 | /* | |
319 | * Backup to beginning of create_XXXfield declaration | |
320 | * body_length is unknown until we parse the body | |
321 | */ | |
322 | op->named.data = aml_op_start; | |
323 | op->named.length = 0; | |
324 | } | |
325 | ||
326 | if (walk_state->opcode == AML_BANK_FIELD_OP) { | |
327 | /* | |
328 | * Backup to beginning of bank_field declaration | |
329 | * body_length is unknown until we parse the body | |
330 | */ | |
331 | op->named.data = aml_op_start; | |
332 | op->named.length = 0; | |
333 | } | |
334 | ||
335 | parent_scope = acpi_ps_get_parent_scope(&(walk_state->parser_state)); | |
336 | acpi_ps_append_arg(parent_scope, op); | |
337 | ||
338 | if (parent_scope) { | |
339 | op_info = | |
340 | acpi_ps_get_opcode_info(parent_scope->common.aml_opcode); | |
341 | if (op_info->flags & AML_HAS_TARGET) { | |
342 | argument_count = | |
343 | acpi_ps_get_argument_count(op_info->type); | |
344 | if (parent_scope->common.arg_list_length > | |
345 | argument_count) { | |
346 | op->common.flags |= ACPI_PARSEOP_TARGET; | |
347 | } | |
348 | } else if (parent_scope->common.aml_opcode == AML_INCREMENT_OP) { | |
349 | op->common.flags |= ACPI_PARSEOP_TARGET; | |
350 | } | |
351 | } | |
352 | ||
353 | if (walk_state->descending_callback != NULL) { | |
354 | /* | |
355 | * Find the object. This will either insert the object into | |
356 | * the namespace or simply look it up | |
357 | */ | |
358 | walk_state->op = *new_op = op; | |
359 | ||
360 | status = walk_state->descending_callback(walk_state, &op); | |
361 | status = acpi_ps_next_parse_state(walk_state, op, status); | |
362 | if (status == AE_CTRL_PENDING) { | |
363 | status = AE_CTRL_PARSE_PENDING; | |
364 | } | |
365 | } | |
366 | ||
367 | return_ACPI_STATUS(status); | |
368 | } | |
369 | ||
370 | /******************************************************************************* | |
371 | * | |
372 | * FUNCTION: acpi_ps_complete_op | |
373 | * | |
374 | * PARAMETERS: walk_state - Current state | |
375 | * op - Returned Op | |
376 | * status - Parse status before complete Op | |
377 | * | |
378 | * RETURN: Status | |
379 | * | |
380 | * DESCRIPTION: Complete Op | |
381 | * | |
382 | ******************************************************************************/ | |
383 | ||
384 | acpi_status | |
385 | acpi_ps_complete_op(struct acpi_walk_state *walk_state, | |
386 | union acpi_parse_object **op, acpi_status status) | |
387 | { | |
388 | acpi_status status2; | |
389 | ||
390 | ACPI_FUNCTION_TRACE_PTR(ps_complete_op, walk_state); | |
391 | ||
392 | /* | |
393 | * Finished one argument of the containing scope | |
394 | */ | |
395 | walk_state->parser_state.scope->parse_scope.arg_count--; | |
396 | ||
397 | /* Close this Op (will result in parse subtree deletion) */ | |
398 | ||
399 | status2 = acpi_ps_complete_this_op(walk_state, *op); | |
400 | if (ACPI_FAILURE(status2)) { | |
401 | return_ACPI_STATUS(status2); | |
402 | } | |
403 | ||
404 | *op = NULL; | |
405 | ||
406 | switch (status) { | |
407 | case AE_OK: | |
1d1ea1b7 | 408 | |
42f8fb75 BM |
409 | break; |
410 | ||
411 | case AE_CTRL_TRANSFER: | |
412 | ||
413 | /* We are about to transfer to a called method */ | |
414 | ||
415 | walk_state->prev_op = NULL; | |
416 | walk_state->prev_arg_types = walk_state->arg_types; | |
417 | return_ACPI_STATUS(status); | |
418 | ||
419 | case AE_CTRL_END: | |
420 | ||
421 | acpi_ps_pop_scope(&(walk_state->parser_state), op, | |
422 | &walk_state->arg_types, | |
423 | &walk_state->arg_count); | |
424 | ||
425 | if (*op) { | |
426 | walk_state->op = *op; | |
427 | walk_state->op_info = | |
428 | acpi_ps_get_opcode_info((*op)->common.aml_opcode); | |
429 | walk_state->opcode = (*op)->common.aml_opcode; | |
430 | ||
431 | status = walk_state->ascending_callback(walk_state); | |
432 | status = | |
433 | acpi_ps_next_parse_state(walk_state, *op, status); | |
434 | ||
435 | status2 = acpi_ps_complete_this_op(walk_state, *op); | |
436 | if (ACPI_FAILURE(status2)) { | |
437 | return_ACPI_STATUS(status2); | |
438 | } | |
439 | } | |
440 | ||
441 | status = AE_OK; | |
442 | break; | |
443 | ||
444 | case AE_CTRL_BREAK: | |
445 | case AE_CTRL_CONTINUE: | |
446 | ||
447 | /* Pop off scopes until we find the While */ | |
448 | ||
449 | while (!(*op) || ((*op)->common.aml_opcode != AML_WHILE_OP)) { | |
450 | acpi_ps_pop_scope(&(walk_state->parser_state), op, | |
451 | &walk_state->arg_types, | |
452 | &walk_state->arg_count); | |
453 | } | |
454 | ||
455 | /* Close this iteration of the While loop */ | |
456 | ||
457 | walk_state->op = *op; | |
458 | walk_state->op_info = | |
459 | acpi_ps_get_opcode_info((*op)->common.aml_opcode); | |
460 | walk_state->opcode = (*op)->common.aml_opcode; | |
461 | ||
462 | status = walk_state->ascending_callback(walk_state); | |
463 | status = acpi_ps_next_parse_state(walk_state, *op, status); | |
464 | ||
465 | status2 = acpi_ps_complete_this_op(walk_state, *op); | |
466 | if (ACPI_FAILURE(status2)) { | |
467 | return_ACPI_STATUS(status2); | |
468 | } | |
469 | ||
470 | status = AE_OK; | |
471 | break; | |
472 | ||
473 | case AE_CTRL_TERMINATE: | |
474 | ||
475 | /* Clean up */ | |
476 | do { | |
477 | if (*op) { | |
478 | status2 = | |
479 | acpi_ps_complete_this_op(walk_state, *op); | |
480 | if (ACPI_FAILURE(status2)) { | |
481 | return_ACPI_STATUS(status2); | |
482 | } | |
483 | ||
484 | acpi_ut_delete_generic_state | |
485 | (acpi_ut_pop_generic_state | |
486 | (&walk_state->control_state)); | |
487 | } | |
488 | ||
489 | acpi_ps_pop_scope(&(walk_state->parser_state), op, | |
490 | &walk_state->arg_types, | |
491 | &walk_state->arg_count); | |
492 | ||
493 | } while (*op); | |
494 | ||
495 | return_ACPI_STATUS(AE_OK); | |
496 | ||
497 | default: /* All other non-AE_OK status */ | |
498 | ||
499 | do { | |
500 | if (*op) { | |
501 | status2 = | |
502 | acpi_ps_complete_this_op(walk_state, *op); | |
503 | if (ACPI_FAILURE(status2)) { | |
504 | return_ACPI_STATUS(status2); | |
505 | } | |
506 | } | |
507 | ||
508 | acpi_ps_pop_scope(&(walk_state->parser_state), op, | |
509 | &walk_state->arg_types, | |
510 | &walk_state->arg_count); | |
511 | ||
512 | } while (*op); | |
513 | ||
514 | #if 0 | |
515 | /* | |
516 | * TBD: Cleanup parse ops on error | |
517 | */ | |
518 | if (*op == NULL) { | |
519 | acpi_ps_pop_scope(parser_state, op, | |
520 | &walk_state->arg_types, | |
521 | &walk_state->arg_count); | |
522 | } | |
523 | #endif | |
524 | walk_state->prev_op = NULL; | |
525 | walk_state->prev_arg_types = walk_state->arg_types; | |
526 | return_ACPI_STATUS(status); | |
527 | } | |
528 | ||
529 | /* This scope complete? */ | |
530 | ||
531 | if (acpi_ps_has_completed_scope(&(walk_state->parser_state))) { | |
532 | acpi_ps_pop_scope(&(walk_state->parser_state), op, | |
533 | &walk_state->arg_types, | |
534 | &walk_state->arg_count); | |
535 | ACPI_DEBUG_PRINT((ACPI_DB_PARSE, "Popped scope, Op=%p\n", *op)); | |
536 | } else { | |
537 | *op = NULL; | |
538 | } | |
539 | ||
540 | return_ACPI_STATUS(AE_OK); | |
541 | } | |
542 | ||
543 | /******************************************************************************* | |
544 | * | |
545 | * FUNCTION: acpi_ps_complete_final_op | |
546 | * | |
547 | * PARAMETERS: walk_state - Current state | |
548 | * op - Current Op | |
549 | * status - Current parse status before complete last | |
550 | * Op | |
551 | * | |
552 | * RETURN: Status | |
553 | * | |
554 | * DESCRIPTION: Complete last Op. | |
555 | * | |
556 | ******************************************************************************/ | |
557 | ||
558 | acpi_status | |
559 | acpi_ps_complete_final_op(struct acpi_walk_state *walk_state, | |
560 | union acpi_parse_object *op, acpi_status status) | |
561 | { | |
562 | acpi_status status2; | |
563 | ||
564 | ACPI_FUNCTION_TRACE_PTR(ps_complete_final_op, walk_state); | |
565 | ||
566 | /* | |
567 | * Complete the last Op (if not completed), and clear the scope stack. | |
568 | * It is easily possible to end an AML "package" with an unbounded number | |
569 | * of open scopes (such as when several ASL blocks are closed with | |
570 | * sequential closing braces). We want to terminate each one cleanly. | |
571 | */ | |
572 | ACPI_DEBUG_PRINT((ACPI_DB_PARSE, "AML package complete at Op %p\n", | |
573 | op)); | |
574 | do { | |
575 | if (op) { | |
576 | if (walk_state->ascending_callback != NULL) { | |
577 | walk_state->op = op; | |
578 | walk_state->op_info = | |
579 | acpi_ps_get_opcode_info(op->common. | |
580 | aml_opcode); | |
581 | walk_state->opcode = op->common.aml_opcode; | |
582 | ||
583 | status = | |
584 | walk_state->ascending_callback(walk_state); | |
585 | status = | |
586 | acpi_ps_next_parse_state(walk_state, op, | |
587 | status); | |
588 | if (status == AE_CTRL_PENDING) { | |
589 | status = | |
590 | acpi_ps_complete_op(walk_state, &op, | |
591 | AE_OK); | |
592 | if (ACPI_FAILURE(status)) { | |
593 | return_ACPI_STATUS(status); | |
594 | } | |
595 | } | |
596 | ||
597 | if (status == AE_CTRL_TERMINATE) { | |
598 | status = AE_OK; | |
599 | ||
600 | /* Clean up */ | |
601 | do { | |
602 | if (op) { | |
603 | status2 = | |
604 | acpi_ps_complete_this_op | |
605 | (walk_state, op); | |
606 | if (ACPI_FAILURE | |
607 | (status2)) { | |
608 | return_ACPI_STATUS | |
609 | (status2); | |
610 | } | |
611 | } | |
612 | ||
613 | acpi_ps_pop_scope(& | |
614 | (walk_state-> | |
615 | parser_state), | |
616 | &op, | |
617 | &walk_state-> | |
618 | arg_types, | |
619 | &walk_state-> | |
620 | arg_count); | |
621 | ||
622 | } while (op); | |
623 | ||
624 | return_ACPI_STATUS(status); | |
625 | } | |
626 | ||
627 | else if (ACPI_FAILURE(status)) { | |
628 | ||
629 | /* First error is most important */ | |
630 | ||
631 | (void) | |
632 | acpi_ps_complete_this_op(walk_state, | |
633 | op); | |
634 | return_ACPI_STATUS(status); | |
635 | } | |
636 | } | |
637 | ||
638 | status2 = acpi_ps_complete_this_op(walk_state, op); | |
639 | if (ACPI_FAILURE(status2)) { | |
640 | return_ACPI_STATUS(status2); | |
641 | } | |
642 | } | |
643 | ||
644 | acpi_ps_pop_scope(&(walk_state->parser_state), &op, | |
645 | &walk_state->arg_types, | |
646 | &walk_state->arg_count); | |
647 | ||
648 | } while (op); | |
649 | ||
650 | return_ACPI_STATUS(status); | |
651 | } |