]>
Commit | Line | Data |
---|---|---|
95857638 | 1 | // SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0 |
42f8fb75 BM |
2 | /****************************************************************************** |
3 | * | |
4 | * Module Name: psobject - Support for parse objects | |
5 | * | |
4441e55d | 6 | * Copyright (C) 2000 - 2021, Intel Corp. |
42f8fb75 | 7 | * |
95857638 | 8 | *****************************************************************************/ |
42f8fb75 BM |
9 | |
10 | #include <acpi/acpi.h> | |
11 | #include "accommon.h" | |
12 | #include "acparser.h" | |
13 | #include "amlcode.h" | |
9cf7adec | 14 | #include "acconvert.h" |
5088814a | 15 | #include "acnamesp.h" |
42f8fb75 BM |
16 | |
17 | #define _COMPONENT ACPI_PARSER | |
18 | ACPI_MODULE_NAME("psobject") | |
19 | ||
20 | /* Local prototypes */ | |
21 | static acpi_status acpi_ps_get_aml_opcode(struct acpi_walk_state *walk_state); | |
22 | ||
23 | /******************************************************************************* | |
24 | * | |
25 | * FUNCTION: acpi_ps_get_aml_opcode | |
26 | * | |
27 | * PARAMETERS: walk_state - Current state | |
28 | * | |
29 | * RETURN: Status | |
30 | * | |
31 | * DESCRIPTION: Extract the next AML opcode from the input stream. | |
32 | * | |
33 | ******************************************************************************/ | |
34 | ||
35 | static acpi_status acpi_ps_get_aml_opcode(struct acpi_walk_state *walk_state) | |
36 | { | |
0fe0bebf | 37 | ACPI_ERROR_ONLY(u32 aml_offset); |
42f8fb75 BM |
38 | |
39 | ACPI_FUNCTION_TRACE_PTR(ps_get_aml_opcode, walk_state); | |
40 | ||
83482f75 | 41 | walk_state->aml = walk_state->parser_state.aml; |
42f8fb75 BM |
42 | walk_state->opcode = acpi_ps_peek_opcode(&(walk_state->parser_state)); |
43 | ||
44 | /* | |
45 | * First cut to determine what we have found: | |
46 | * 1) A valid AML opcode | |
47 | * 2) A name string | |
48 | * 3) An unknown/invalid opcode | |
49 | */ | |
50 | walk_state->op_info = acpi_ps_get_opcode_info(walk_state->opcode); | |
51 | ||
52 | switch (walk_state->op_info->class) { | |
53 | case AML_CLASS_ASCII: | |
54 | case AML_CLASS_PREFIX: | |
55 | /* | |
56 | * Starts with a valid prefix or ASCII char, this is a name | |
57 | * string. Convert the bare name string to a namepath. | |
58 | */ | |
59 | walk_state->opcode = AML_INT_NAMEPATH_OP; | |
60 | walk_state->arg_types = ARGP_NAMESTRING; | |
61 | break; | |
62 | ||
63 | case AML_CLASS_UNKNOWN: | |
64 | ||
65 | /* The opcode is unrecognized. Complain and skip unknown opcodes */ | |
66 | ||
67 | if (walk_state->pass_number == 2) { | |
0fe0bebf EK |
68 | ACPI_ERROR_ONLY(aml_offset = |
69 | (u32)ACPI_PTR_DIFF(walk_state->aml, | |
70 | walk_state-> | |
71 | parser_state. | |
72 | aml_start)); | |
83482f75 | 73 | |
42f8fb75 BM |
74 | ACPI_ERROR((AE_INFO, |
75 | "Unknown opcode 0x%.2X at table offset 0x%.4X, ignoring", | |
76 | walk_state->opcode, | |
83482f75 | 77 | (u32)(aml_offset + |
42f8fb75 BM |
78 | sizeof(struct acpi_table_header)))); |
79 | ||
80 | ACPI_DUMP_BUFFER((walk_state->parser_state.aml - 16), | |
81 | 48); | |
82 | ||
83 | #ifdef ACPI_ASL_COMPILER | |
84 | /* | |
85 | * This is executed for the disassembler only. Output goes | |
86 | * to the disassembled ASL output file. | |
87 | */ | |
88 | acpi_os_printf | |
89 | ("/*\nError: Unknown opcode 0x%.2X at table offset 0x%.4X, context:\n", | |
90 | walk_state->opcode, | |
83482f75 | 91 | (u32)(aml_offset + |
42f8fb75 BM |
92 | sizeof(struct acpi_table_header))); |
93 | ||
6f0527b7 BM |
94 | ACPI_ERROR((AE_INFO, |
95 | "Aborting disassembly, AML byte code is corrupt")); | |
96 | ||
42f8fb75 BM |
97 | /* Dump the context surrounding the invalid opcode */ |
98 | ||
99 | acpi_ut_dump_buffer(((u8 *)walk_state->parser_state. | |
100 | aml - 16), 48, DB_BYTE_DISPLAY, | |
83482f75 | 101 | (aml_offset + |
42f8fb75 BM |
102 | sizeof(struct acpi_table_header) - |
103 | 16)); | |
104 | acpi_os_printf(" */\n"); | |
6f0527b7 BM |
105 | |
106 | /* | |
107 | * Just abort the disassembly, cannot continue because the | |
108 | * parser is essentially lost. The disassembler can then | |
109 | * randomly fail because an ill-constructed parse tree | |
110 | * can result. | |
111 | */ | |
112 | return_ACPI_STATUS(AE_AML_BAD_OPCODE); | |
42f8fb75 BM |
113 | #endif |
114 | } | |
115 | ||
116 | /* Increment past one-byte or two-byte opcode */ | |
117 | ||
118 | walk_state->parser_state.aml++; | |
119 | if (walk_state->opcode > 0xFF) { /* Can only happen if first byte is 0x5B */ | |
120 | walk_state->parser_state.aml++; | |
121 | } | |
122 | ||
123 | return_ACPI_STATUS(AE_CTRL_PARSE_CONTINUE); | |
124 | ||
125 | default: | |
126 | ||
127 | /* Found opcode info, this is a normal opcode */ | |
128 | ||
129 | walk_state->parser_state.aml += | |
130 | acpi_ps_get_opcode_size(walk_state->opcode); | |
131 | walk_state->arg_types = walk_state->op_info->parse_args; | |
132 | break; | |
133 | } | |
134 | ||
135 | return_ACPI_STATUS(AE_OK); | |
136 | } | |
137 | ||
138 | /******************************************************************************* | |
139 | * | |
140 | * FUNCTION: acpi_ps_build_named_op | |
141 | * | |
142 | * PARAMETERS: walk_state - Current state | |
143 | * aml_op_start - Begin of named Op in AML | |
144 | * unnamed_op - Early Op (not a named Op) | |
145 | * op - Returned Op | |
146 | * | |
147 | * RETURN: Status | |
148 | * | |
149 | * DESCRIPTION: Parse a named Op | |
150 | * | |
151 | ******************************************************************************/ | |
152 | ||
153 | acpi_status | |
154 | acpi_ps_build_named_op(struct acpi_walk_state *walk_state, | |
155 | u8 *aml_op_start, | |
156 | union acpi_parse_object *unnamed_op, | |
157 | union acpi_parse_object **op) | |
158 | { | |
159 | acpi_status status = AE_OK; | |
160 | union acpi_parse_object *arg = NULL; | |
161 | ||
162 | ACPI_FUNCTION_TRACE_PTR(ps_build_named_op, walk_state); | |
163 | ||
164 | unnamed_op->common.value.arg = NULL; | |
165 | unnamed_op->common.arg_list_length = 0; | |
166 | unnamed_op->common.aml_opcode = walk_state->opcode; | |
167 | ||
168 | /* | |
169 | * Get and append arguments until we find the node that contains | |
170 | * the name (the type ARGP_NAME). | |
171 | */ | |
172 | while (GET_CURRENT_ARG_TYPE(walk_state->arg_types) && | |
173 | (GET_CURRENT_ARG_TYPE(walk_state->arg_types) != ARGP_NAME)) { | |
9cf7adec | 174 | ASL_CV_CAPTURE_COMMENTS(walk_state); |
42f8fb75 BM |
175 | status = |
176 | acpi_ps_get_next_arg(walk_state, | |
177 | &(walk_state->parser_state), | |
178 | GET_CURRENT_ARG_TYPE(walk_state-> | |
179 | arg_types), &arg); | |
180 | if (ACPI_FAILURE(status)) { | |
181 | return_ACPI_STATUS(status); | |
182 | } | |
183 | ||
184 | acpi_ps_append_arg(unnamed_op, arg); | |
185 | INCREMENT_ARG_LIST(walk_state->arg_types); | |
186 | } | |
187 | ||
9cf7adec BM |
188 | /* are there any inline comments associated with the name_seg?? If so, save this. */ |
189 | ||
190 | ASL_CV_CAPTURE_COMMENTS(walk_state); | |
191 | ||
192 | #ifdef ACPI_ASL_COMPILER | |
193 | if (acpi_gbl_current_inline_comment != NULL) { | |
194 | unnamed_op->common.name_comment = | |
195 | acpi_gbl_current_inline_comment; | |
196 | acpi_gbl_current_inline_comment = NULL; | |
197 | } | |
198 | #endif | |
199 | ||
42f8fb75 BM |
200 | /* |
201 | * Make sure that we found a NAME and didn't run out of arguments | |
202 | */ | |
203 | if (!GET_CURRENT_ARG_TYPE(walk_state->arg_types)) { | |
204 | return_ACPI_STATUS(AE_AML_NO_OPERAND); | |
205 | } | |
206 | ||
207 | /* We know that this arg is a name, move to next arg */ | |
208 | ||
209 | INCREMENT_ARG_LIST(walk_state->arg_types); | |
210 | ||
211 | /* | |
212 | * Find the object. This will either insert the object into | |
213 | * the namespace or simply look it up | |
214 | */ | |
215 | walk_state->op = NULL; | |
216 | ||
217 | status = walk_state->descending_callback(walk_state, op); | |
218 | if (ACPI_FAILURE(status)) { | |
22b5afce BM |
219 | if (status != AE_CTRL_TERMINATE) { |
220 | ACPI_EXCEPTION((AE_INFO, status, | |
221 | "During name lookup/catalog")); | |
222 | } | |
42f8fb75 BM |
223 | return_ACPI_STATUS(status); |
224 | } | |
225 | ||
226 | if (!*op) { | |
227 | return_ACPI_STATUS(AE_CTRL_PARSE_CONTINUE); | |
228 | } | |
229 | ||
230 | status = acpi_ps_next_parse_state(walk_state, *op, status); | |
231 | if (ACPI_FAILURE(status)) { | |
232 | if (status == AE_CTRL_PENDING) { | |
22b5afce | 233 | status = AE_CTRL_PARSE_PENDING; |
42f8fb75 BM |
234 | } |
235 | return_ACPI_STATUS(status); | |
236 | } | |
237 | ||
238 | acpi_ps_append_arg(*op, unnamed_op->common.value.arg); | |
239 | ||
9cf7adec BM |
240 | #ifdef ACPI_ASL_COMPILER |
241 | ||
242 | /* save any comments that might be associated with unnamed_op. */ | |
243 | ||
244 | (*op)->common.inline_comment = unnamed_op->common.inline_comment; | |
245 | (*op)->common.end_node_comment = unnamed_op->common.end_node_comment; | |
246 | (*op)->common.close_brace_comment = | |
247 | unnamed_op->common.close_brace_comment; | |
248 | (*op)->common.name_comment = unnamed_op->common.name_comment; | |
249 | (*op)->common.comment_list = unnamed_op->common.comment_list; | |
250 | (*op)->common.end_blk_comment = unnamed_op->common.end_blk_comment; | |
251 | (*op)->common.cv_filename = unnamed_op->common.cv_filename; | |
252 | (*op)->common.cv_parent_filename = | |
253 | unnamed_op->common.cv_parent_filename; | |
254 | (*op)->named.aml = unnamed_op->common.aml; | |
255 | ||
256 | unnamed_op->common.inline_comment = NULL; | |
257 | unnamed_op->common.end_node_comment = NULL; | |
258 | unnamed_op->common.close_brace_comment = NULL; | |
259 | unnamed_op->common.name_comment = NULL; | |
260 | unnamed_op->common.comment_list = NULL; | |
261 | unnamed_op->common.end_blk_comment = NULL; | |
262 | #endif | |
263 | ||
42f8fb75 BM |
264 | if ((*op)->common.aml_opcode == AML_REGION_OP || |
265 | (*op)->common.aml_opcode == AML_DATA_REGION_OP) { | |
266 | /* | |
267 | * Defer final parsing of an operation_region body, because we don't | |
268 | * have enough info in the first pass to parse it correctly (i.e., | |
269 | * there may be method calls within the term_arg elements of the body.) | |
270 | * | |
271 | * However, we must continue parsing because the opregion is not a | |
272 | * standalone package -- we don't know where the end is at this point. | |
273 | * | |
274 | * (Length is unknown until parse of the body complete) | |
275 | */ | |
276 | (*op)->named.data = aml_op_start; | |
277 | (*op)->named.length = 0; | |
278 | } | |
279 | ||
280 | return_ACPI_STATUS(AE_OK); | |
281 | } | |
282 | ||
283 | /******************************************************************************* | |
284 | * | |
285 | * FUNCTION: acpi_ps_create_op | |
286 | * | |
287 | * PARAMETERS: walk_state - Current state | |
288 | * aml_op_start - Op start in AML | |
289 | * new_op - Returned Op | |
290 | * | |
291 | * RETURN: Status | |
292 | * | |
293 | * DESCRIPTION: Get Op from AML | |
294 | * | |
295 | ******************************************************************************/ | |
296 | ||
297 | acpi_status | |
298 | acpi_ps_create_op(struct acpi_walk_state *walk_state, | |
299 | u8 *aml_op_start, union acpi_parse_object **new_op) | |
300 | { | |
301 | acpi_status status = AE_OK; | |
302 | union acpi_parse_object *op; | |
303 | union acpi_parse_object *named_op = NULL; | |
304 | union acpi_parse_object *parent_scope; | |
305 | u8 argument_count; | |
306 | const struct acpi_opcode_info *op_info; | |
307 | ||
308 | ACPI_FUNCTION_TRACE_PTR(ps_create_op, walk_state); | |
309 | ||
310 | status = acpi_ps_get_aml_opcode(walk_state); | |
311 | if (status == AE_CTRL_PARSE_CONTINUE) { | |
312 | return_ACPI_STATUS(AE_CTRL_PARSE_CONTINUE); | |
313 | } | |
6f0527b7 BM |
314 | if (ACPI_FAILURE(status)) { |
315 | return_ACPI_STATUS(status); | |
316 | } | |
42f8fb75 BM |
317 | |
318 | /* Create Op structure and append to parent's argument list */ | |
319 | ||
320 | walk_state->op_info = acpi_ps_get_opcode_info(walk_state->opcode); | |
62eb935b | 321 | op = acpi_ps_alloc_op(walk_state->opcode, aml_op_start); |
42f8fb75 BM |
322 | if (!op) { |
323 | return_ACPI_STATUS(AE_NO_MEMORY); | |
324 | } | |
325 | ||
326 | if (walk_state->op_info->flags & AML_NAMED) { | |
327 | status = | |
328 | acpi_ps_build_named_op(walk_state, aml_op_start, op, | |
329 | &named_op); | |
330 | acpi_ps_free_op(op); | |
3f20ea15 EK |
331 | |
332 | #ifdef ACPI_ASL_COMPILER | |
333 | if (acpi_gbl_disasm_flag | |
334 | && walk_state->opcode == AML_EXTERNAL_OP | |
335 | && status == AE_NOT_FOUND) { | |
336 | /* | |
337 | * If parsing of AML_EXTERNAL_OP's name path fails, then skip | |
338 | * past this opcode and keep parsing. This is a much better | |
339 | * alternative than to abort the entire disassembler. At this | |
340 | * point, the parser_state is at the end of the namepath of the | |
341 | * external declaration opcode. Setting walk_state->Aml to | |
342 | * walk_state->parser_state.Aml + 2 moves increments the | |
343 | * walk_state->Aml past the object type and the paramcount of the | |
ee470f08 | 344 | * external opcode. |
3f20ea15 | 345 | */ |
3f20ea15 | 346 | walk_state->aml = walk_state->parser_state.aml + 2; |
5c74663e | 347 | walk_state->parser_state.aml = walk_state->aml; |
3f20ea15 EK |
348 | return_ACPI_STATUS(AE_CTRL_PARSE_CONTINUE); |
349 | } | |
350 | #endif | |
42f8fb75 BM |
351 | if (ACPI_FAILURE(status)) { |
352 | return_ACPI_STATUS(status); | |
353 | } | |
354 | ||
355 | *new_op = named_op; | |
356 | return_ACPI_STATUS(AE_OK); | |
357 | } | |
358 | ||
359 | /* Not a named opcode, just allocate Op and append to parent */ | |
360 | ||
361 | if (walk_state->op_info->flags & AML_CREATE) { | |
362 | /* | |
363 | * Backup to beginning of create_XXXfield declaration | |
364 | * body_length is unknown until we parse the body | |
365 | */ | |
366 | op->named.data = aml_op_start; | |
367 | op->named.length = 0; | |
368 | } | |
369 | ||
370 | if (walk_state->opcode == AML_BANK_FIELD_OP) { | |
371 | /* | |
372 | * Backup to beginning of bank_field declaration | |
373 | * body_length is unknown until we parse the body | |
374 | */ | |
375 | op->named.data = aml_op_start; | |
376 | op->named.length = 0; | |
377 | } | |
378 | ||
379 | parent_scope = acpi_ps_get_parent_scope(&(walk_state->parser_state)); | |
380 | acpi_ps_append_arg(parent_scope, op); | |
381 | ||
382 | if (parent_scope) { | |
383 | op_info = | |
384 | acpi_ps_get_opcode_info(parent_scope->common.aml_opcode); | |
385 | if (op_info->flags & AML_HAS_TARGET) { | |
386 | argument_count = | |
387 | acpi_ps_get_argument_count(op_info->type); | |
388 | if (parent_scope->common.arg_list_length > | |
389 | argument_count) { | |
390 | op->common.flags |= ACPI_PARSEOP_TARGET; | |
391 | } | |
ce87e09d BM |
392 | } |
393 | ||
394 | /* | |
395 | * Special case for both Increment() and Decrement(), where | |
396 | * the lone argument is both a source and a target. | |
397 | */ | |
398 | else if ((parent_scope->common.aml_opcode == AML_INCREMENT_OP) | |
399 | || (parent_scope->common.aml_opcode == | |
400 | AML_DECREMENT_OP)) { | |
42f8fb75 BM |
401 | op->common.flags |= ACPI_PARSEOP_TARGET; |
402 | } | |
403 | } | |
404 | ||
405 | if (walk_state->descending_callback != NULL) { | |
406 | /* | |
407 | * Find the object. This will either insert the object into | |
408 | * the namespace or simply look it up | |
409 | */ | |
410 | walk_state->op = *new_op = op; | |
411 | ||
412 | status = walk_state->descending_callback(walk_state, &op); | |
413 | status = acpi_ps_next_parse_state(walk_state, op, status); | |
414 | if (status == AE_CTRL_PENDING) { | |
415 | status = AE_CTRL_PARSE_PENDING; | |
416 | } | |
417 | } | |
418 | ||
419 | return_ACPI_STATUS(status); | |
420 | } | |
421 | ||
422 | /******************************************************************************* | |
423 | * | |
424 | * FUNCTION: acpi_ps_complete_op | |
425 | * | |
426 | * PARAMETERS: walk_state - Current state | |
427 | * op - Returned Op | |
428 | * status - Parse status before complete Op | |
429 | * | |
430 | * RETURN: Status | |
431 | * | |
432 | * DESCRIPTION: Complete Op | |
433 | * | |
434 | ******************************************************************************/ | |
435 | ||
436 | acpi_status | |
437 | acpi_ps_complete_op(struct acpi_walk_state *walk_state, | |
438 | union acpi_parse_object **op, acpi_status status) | |
439 | { | |
440 | acpi_status status2; | |
441 | ||
442 | ACPI_FUNCTION_TRACE_PTR(ps_complete_op, walk_state); | |
443 | ||
444 | /* | |
445 | * Finished one argument of the containing scope | |
446 | */ | |
447 | walk_state->parser_state.scope->parse_scope.arg_count--; | |
448 | ||
449 | /* Close this Op (will result in parse subtree deletion) */ | |
450 | ||
451 | status2 = acpi_ps_complete_this_op(walk_state, *op); | |
452 | if (ACPI_FAILURE(status2)) { | |
453 | return_ACPI_STATUS(status2); | |
454 | } | |
455 | ||
456 | *op = NULL; | |
457 | ||
458 | switch (status) { | |
459 | case AE_OK: | |
1d1ea1b7 | 460 | |
42f8fb75 BM |
461 | break; |
462 | ||
463 | case AE_CTRL_TRANSFER: | |
464 | ||
465 | /* We are about to transfer to a called method */ | |
466 | ||
467 | walk_state->prev_op = NULL; | |
468 | walk_state->prev_arg_types = walk_state->arg_types; | |
469 | return_ACPI_STATUS(status); | |
470 | ||
471 | case AE_CTRL_END: | |
472 | ||
473 | acpi_ps_pop_scope(&(walk_state->parser_state), op, | |
474 | &walk_state->arg_types, | |
475 | &walk_state->arg_count); | |
476 | ||
477 | if (*op) { | |
478 | walk_state->op = *op; | |
479 | walk_state->op_info = | |
480 | acpi_ps_get_opcode_info((*op)->common.aml_opcode); | |
481 | walk_state->opcode = (*op)->common.aml_opcode; | |
482 | ||
aaf7566f | 483 | status = walk_state->ascending_callback(walk_state); |
edc5935e | 484 | (void)acpi_ps_next_parse_state(walk_state, *op, status); |
42f8fb75 BM |
485 | |
486 | status2 = acpi_ps_complete_this_op(walk_state, *op); | |
487 | if (ACPI_FAILURE(status2)) { | |
488 | return_ACPI_STATUS(status2); | |
489 | } | |
490 | } | |
491 | ||
42f8fb75 BM |
492 | break; |
493 | ||
494 | case AE_CTRL_BREAK: | |
495 | case AE_CTRL_CONTINUE: | |
496 | ||
497 | /* Pop off scopes until we find the While */ | |
498 | ||
499 | while (!(*op) || ((*op)->common.aml_opcode != AML_WHILE_OP)) { | |
500 | acpi_ps_pop_scope(&(walk_state->parser_state), op, | |
501 | &walk_state->arg_types, | |
502 | &walk_state->arg_count); | |
503 | } | |
504 | ||
505 | /* Close this iteration of the While loop */ | |
506 | ||
507 | walk_state->op = *op; | |
508 | walk_state->op_info = | |
509 | acpi_ps_get_opcode_info((*op)->common.aml_opcode); | |
510 | walk_state->opcode = (*op)->common.aml_opcode; | |
511 | ||
512 | status = walk_state->ascending_callback(walk_state); | |
aaf7566f | 513 | (void)acpi_ps_next_parse_state(walk_state, *op, status); |
42f8fb75 BM |
514 | |
515 | status2 = acpi_ps_complete_this_op(walk_state, *op); | |
516 | if (ACPI_FAILURE(status2)) { | |
517 | return_ACPI_STATUS(status2); | |
518 | } | |
519 | ||
42f8fb75 BM |
520 | break; |
521 | ||
522 | case AE_CTRL_TERMINATE: | |
523 | ||
524 | /* Clean up */ | |
525 | do { | |
526 | if (*op) { | |
527 | status2 = | |
528 | acpi_ps_complete_this_op(walk_state, *op); | |
529 | if (ACPI_FAILURE(status2)) { | |
530 | return_ACPI_STATUS(status2); | |
531 | } | |
532 | ||
533 | acpi_ut_delete_generic_state | |
534 | (acpi_ut_pop_generic_state | |
535 | (&walk_state->control_state)); | |
536 | } | |
537 | ||
538 | acpi_ps_pop_scope(&(walk_state->parser_state), op, | |
539 | &walk_state->arg_types, | |
540 | &walk_state->arg_count); | |
541 | ||
542 | } while (*op); | |
543 | ||
544 | return_ACPI_STATUS(AE_OK); | |
545 | ||
546 | default: /* All other non-AE_OK status */ | |
547 | ||
548 | do { | |
549 | if (*op) { | |
5088814a EK |
550 | /* |
551 | * These Opcodes need to be removed from the namespace because they | |
552 | * get created even if these opcodes cannot be created due to | |
553 | * errors. | |
554 | */ | |
555 | if (((*op)->common.aml_opcode == AML_REGION_OP) | |
556 | || ((*op)->common.aml_opcode == | |
557 | AML_DATA_REGION_OP)) { | |
558 | acpi_ns_delete_children((*op)->common. | |
559 | node); | |
560 | acpi_ns_remove_node((*op)->common.node); | |
561 | (*op)->common.node = NULL; | |
562 | acpi_ps_delete_parse_tree(*op); | |
563 | } | |
564 | ||
42f8fb75 BM |
565 | status2 = |
566 | acpi_ps_complete_this_op(walk_state, *op); | |
567 | if (ACPI_FAILURE(status2)) { | |
568 | return_ACPI_STATUS(status2); | |
569 | } | |
570 | } | |
571 | ||
572 | acpi_ps_pop_scope(&(walk_state->parser_state), op, | |
573 | &walk_state->arg_types, | |
574 | &walk_state->arg_count); | |
575 | ||
576 | } while (*op); | |
577 | ||
578 | #if 0 | |
579 | /* | |
580 | * TBD: Cleanup parse ops on error | |
581 | */ | |
582 | if (*op == NULL) { | |
583 | acpi_ps_pop_scope(parser_state, op, | |
584 | &walk_state->arg_types, | |
585 | &walk_state->arg_count); | |
586 | } | |
587 | #endif | |
588 | walk_state->prev_op = NULL; | |
589 | walk_state->prev_arg_types = walk_state->arg_types; | |
5088814a EK |
590 | |
591 | if (walk_state->parse_flags & ACPI_PARSE_MODULE_LEVEL) { | |
592 | /* | |
593 | * There was something that went wrong while executing code at the | |
594 | * module-level. We need to skip parsing whatever caused the | |
595 | * error and keep going. One runtime error during the table load | |
596 | * should not cause the entire table to not be loaded. This is | |
597 | * because there could be correct AML beyond the parts that caused | |
598 | * the runtime error. | |
599 | */ | |
927a6abf | 600 | ACPI_INFO(("Ignoring error and continuing table load")); |
5088814a EK |
601 | return_ACPI_STATUS(AE_OK); |
602 | } | |
42f8fb75 BM |
603 | return_ACPI_STATUS(status); |
604 | } | |
605 | ||
606 | /* This scope complete? */ | |
607 | ||
608 | if (acpi_ps_has_completed_scope(&(walk_state->parser_state))) { | |
609 | acpi_ps_pop_scope(&(walk_state->parser_state), op, | |
610 | &walk_state->arg_types, | |
611 | &walk_state->arg_count); | |
612 | ACPI_DEBUG_PRINT((ACPI_DB_PARSE, "Popped scope, Op=%p\n", *op)); | |
613 | } else { | |
614 | *op = NULL; | |
615 | } | |
616 | ||
617 | return_ACPI_STATUS(AE_OK); | |
618 | } | |
619 | ||
620 | /******************************************************************************* | |
621 | * | |
622 | * FUNCTION: acpi_ps_complete_final_op | |
623 | * | |
624 | * PARAMETERS: walk_state - Current state | |
625 | * op - Current Op | |
626 | * status - Current parse status before complete last | |
627 | * Op | |
628 | * | |
629 | * RETURN: Status | |
630 | * | |
631 | * DESCRIPTION: Complete last Op. | |
632 | * | |
633 | ******************************************************************************/ | |
634 | ||
635 | acpi_status | |
636 | acpi_ps_complete_final_op(struct acpi_walk_state *walk_state, | |
637 | union acpi_parse_object *op, acpi_status status) | |
638 | { | |
639 | acpi_status status2; | |
640 | ||
641 | ACPI_FUNCTION_TRACE_PTR(ps_complete_final_op, walk_state); | |
642 | ||
643 | /* | |
644 | * Complete the last Op (if not completed), and clear the scope stack. | |
645 | * It is easily possible to end an AML "package" with an unbounded number | |
646 | * of open scopes (such as when several ASL blocks are closed with | |
647 | * sequential closing braces). We want to terminate each one cleanly. | |
648 | */ | |
649 | ACPI_DEBUG_PRINT((ACPI_DB_PARSE, "AML package complete at Op %p\n", | |
650 | op)); | |
651 | do { | |
652 | if (op) { | |
653 | if (walk_state->ascending_callback != NULL) { | |
654 | walk_state->op = op; | |
655 | walk_state->op_info = | |
656 | acpi_ps_get_opcode_info(op->common. | |
657 | aml_opcode); | |
658 | walk_state->opcode = op->common.aml_opcode; | |
659 | ||
660 | status = | |
661 | walk_state->ascending_callback(walk_state); | |
662 | status = | |
663 | acpi_ps_next_parse_state(walk_state, op, | |
664 | status); | |
665 | if (status == AE_CTRL_PENDING) { | |
666 | status = | |
667 | acpi_ps_complete_op(walk_state, &op, | |
668 | AE_OK); | |
669 | if (ACPI_FAILURE(status)) { | |
670 | return_ACPI_STATUS(status); | |
671 | } | |
672 | } | |
673 | ||
674 | if (status == AE_CTRL_TERMINATE) { | |
675 | status = AE_OK; | |
676 | ||
677 | /* Clean up */ | |
678 | do { | |
679 | if (op) { | |
680 | status2 = | |
681 | acpi_ps_complete_this_op | |
682 | (walk_state, op); | |
683 | if (ACPI_FAILURE | |
684 | (status2)) { | |
685 | return_ACPI_STATUS | |
686 | (status2); | |
687 | } | |
688 | } | |
689 | ||
690 | acpi_ps_pop_scope(& | |
691 | (walk_state-> | |
692 | parser_state), | |
693 | &op, | |
694 | &walk_state-> | |
695 | arg_types, | |
696 | &walk_state-> | |
697 | arg_count); | |
698 | ||
699 | } while (op); | |
700 | ||
701 | return_ACPI_STATUS(status); | |
702 | } | |
703 | ||
704 | else if (ACPI_FAILURE(status)) { | |
705 | ||
706 | /* First error is most important */ | |
707 | ||
708 | (void) | |
709 | acpi_ps_complete_this_op(walk_state, | |
710 | op); | |
711 | return_ACPI_STATUS(status); | |
712 | } | |
713 | } | |
714 | ||
715 | status2 = acpi_ps_complete_this_op(walk_state, op); | |
716 | if (ACPI_FAILURE(status2)) { | |
717 | return_ACPI_STATUS(status2); | |
718 | } | |
719 | } | |
720 | ||
721 | acpi_ps_pop_scope(&(walk_state->parser_state), &op, | |
722 | &walk_state->arg_types, | |
723 | &walk_state->arg_count); | |
724 | ||
725 | } while (op); | |
726 | ||
727 | return_ACPI_STATUS(status); | |
728 | } |