Commit | Line | Data |
---|---|---|
73459f73 RM |
1 | /****************************************************************************** |
2 | * | |
3 | * Module Name: psloop - Main AML parse loop | |
4 | * | |
5 | *****************************************************************************/ | |
6 | ||
7 | /* | |
75a44ce0 | 8 | * Copyright (C) 2000 - 2008, Intel Corp. |
73459f73 RM |
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 | ||
73459f73 | 44 | /* |
4d0b4af9 MK |
45 | * Parse the AML and build an operation tree as most interpreters, (such as |
46 | * Perl) do. Parsing is done by hand rather than with a YACC generated parser | |
47 | * to tightly constrain stack and dynamic memory usage. Parsing is kept | |
48 | * flexible and the code fairly compact by parsing based on a list of AML | |
49 | * opcode templates in aml_op_info[]. | |
73459f73 RM |
50 | */ |
51 | ||
52 | #include <acpi/acpi.h> | |
e2f7a777 LB |
53 | #include "accommon.h" |
54 | #include "acparser.h" | |
55 | #include "acdispat.h" | |
56 | #include "amlcode.h" | |
73459f73 RM |
57 | |
58 | #define _COMPONENT ACPI_PARSER | |
4be44fcd | 59 | ACPI_MODULE_NAME("psloop") |
73459f73 | 60 | |
4be44fcd | 61 | static u32 acpi_gbl_depth = 0; |
73459f73 | 62 | |
4d0b4af9 MK |
63 | /* Local prototypes */ |
64 | ||
65 | static acpi_status acpi_ps_get_aml_opcode(struct acpi_walk_state *walk_state); | |
66 | ||
67 | static acpi_status | |
68 | acpi_ps_build_named_op(struct acpi_walk_state *walk_state, | |
69 | u8 * aml_op_start, | |
70 | union acpi_parse_object *unnamed_op, | |
71 | union acpi_parse_object **op); | |
72 | ||
73 | static acpi_status | |
74 | acpi_ps_create_op(struct acpi_walk_state *walk_state, | |
75 | u8 * aml_op_start, union acpi_parse_object **new_op); | |
76 | ||
77 | static acpi_status | |
78 | acpi_ps_get_arguments(struct acpi_walk_state *walk_state, | |
79 | u8 * aml_op_start, union acpi_parse_object *op); | |
80 | ||
81 | static acpi_status | |
82 | acpi_ps_complete_op(struct acpi_walk_state *walk_state, | |
83 | union acpi_parse_object **op, acpi_status status); | |
84 | ||
85 | static acpi_status | |
86 | acpi_ps_complete_final_op(struct acpi_walk_state *walk_state, | |
87 | union acpi_parse_object *op, acpi_status status); | |
88 | ||
7f0c826a | 89 | static void |
9a884ab6 LM |
90 | acpi_ps_link_module_code(union acpi_parse_object *parent_op, |
91 | u8 *aml_start, u32 aml_length, acpi_owner_id owner_id); | |
7f0c826a | 92 | |
4d0b4af9 MK |
93 | /******************************************************************************* |
94 | * | |
95 | * FUNCTION: acpi_ps_get_aml_opcode | |
96 | * | |
97 | * PARAMETERS: walk_state - Current state | |
98 | * | |
99 | * RETURN: Status | |
100 | * | |
101 | * DESCRIPTION: Extract the next AML opcode from the input stream. | |
102 | * | |
103 | ******************************************************************************/ | |
104 | ||
105 | static acpi_status acpi_ps_get_aml_opcode(struct acpi_walk_state *walk_state) | |
106 | { | |
107 | ||
108 | ACPI_FUNCTION_TRACE_PTR(ps_get_aml_opcode, walk_state); | |
109 | ||
110 | walk_state->aml_offset = | |
111 | (u32) ACPI_PTR_DIFF(walk_state->parser_state.aml, | |
112 | walk_state->parser_state.aml_start); | |
113 | walk_state->opcode = acpi_ps_peek_opcode(&(walk_state->parser_state)); | |
114 | ||
115 | /* | |
116 | * First cut to determine what we have found: | |
117 | * 1) A valid AML opcode | |
118 | * 2) A name string | |
119 | * 3) An unknown/invalid opcode | |
120 | */ | |
121 | walk_state->op_info = acpi_ps_get_opcode_info(walk_state->opcode); | |
122 | ||
123 | switch (walk_state->op_info->class) { | |
124 | case AML_CLASS_ASCII: | |
125 | case AML_CLASS_PREFIX: | |
126 | /* | |
127 | * Starts with a valid prefix or ASCII char, this is a name | |
128 | * string. Convert the bare name string to a namepath. | |
129 | */ | |
130 | walk_state->opcode = AML_INT_NAMEPATH_OP; | |
131 | walk_state->arg_types = ARGP_NAMESTRING; | |
132 | break; | |
133 | ||
134 | case AML_CLASS_UNKNOWN: | |
135 | ||
136 | /* The opcode is unrecognized. Just skip unknown opcodes */ | |
137 | ||
138 | ACPI_ERROR((AE_INFO, | |
139 | "Found unknown opcode %X at AML address %p offset %X, ignoring", | |
140 | walk_state->opcode, walk_state->parser_state.aml, | |
141 | walk_state->aml_offset)); | |
142 | ||
143 | ACPI_DUMP_BUFFER(walk_state->parser_state.aml, 128); | |
144 | ||
145 | /* Assume one-byte bad opcode */ | |
146 | ||
147 | walk_state->parser_state.aml++; | |
148 | return_ACPI_STATUS(AE_CTRL_PARSE_CONTINUE); | |
149 | ||
150 | default: | |
151 | ||
152 | /* Found opcode info, this is a normal opcode */ | |
153 | ||
154 | walk_state->parser_state.aml += | |
155 | acpi_ps_get_opcode_size(walk_state->opcode); | |
156 | walk_state->arg_types = walk_state->op_info->parse_args; | |
157 | break; | |
158 | } | |
159 | ||
160 | return_ACPI_STATUS(AE_OK); | |
161 | } | |
162 | ||
163 | /******************************************************************************* | |
164 | * | |
165 | * FUNCTION: acpi_ps_build_named_op | |
166 | * | |
167 | * PARAMETERS: walk_state - Current state | |
168 | * aml_op_start - Begin of named Op in AML | |
169 | * unnamed_op - Early Op (not a named Op) | |
170 | * Op - Returned Op | |
171 | * | |
172 | * RETURN: Status | |
173 | * | |
174 | * DESCRIPTION: Parse a named Op | |
175 | * | |
176 | ******************************************************************************/ | |
177 | ||
178 | static acpi_status | |
179 | acpi_ps_build_named_op(struct acpi_walk_state *walk_state, | |
180 | u8 * aml_op_start, | |
181 | union acpi_parse_object *unnamed_op, | |
182 | union acpi_parse_object **op) | |
183 | { | |
184 | acpi_status status = AE_OK; | |
185 | union acpi_parse_object *arg = NULL; | |
186 | ||
187 | ACPI_FUNCTION_TRACE_PTR(ps_build_named_op, walk_state); | |
188 | ||
189 | unnamed_op->common.value.arg = NULL; | |
4e3156b1 | 190 | unnamed_op->common.arg_list_length = 0; |
4d0b4af9 MK |
191 | unnamed_op->common.aml_opcode = walk_state->opcode; |
192 | ||
193 | /* | |
194 | * Get and append arguments until we find the node that contains | |
195 | * the name (the type ARGP_NAME). | |
196 | */ | |
197 | while (GET_CURRENT_ARG_TYPE(walk_state->arg_types) && | |
198 | (GET_CURRENT_ARG_TYPE(walk_state->arg_types) != ARGP_NAME)) { | |
199 | status = | |
200 | acpi_ps_get_next_arg(walk_state, | |
201 | &(walk_state->parser_state), | |
202 | GET_CURRENT_ARG_TYPE(walk_state-> | |
203 | arg_types), &arg); | |
204 | if (ACPI_FAILURE(status)) { | |
205 | return_ACPI_STATUS(status); | |
206 | } | |
207 | ||
208 | acpi_ps_append_arg(unnamed_op, arg); | |
209 | INCREMENT_ARG_LIST(walk_state->arg_types); | |
210 | } | |
211 | ||
212 | /* | |
213 | * Make sure that we found a NAME and didn't run out of arguments | |
214 | */ | |
215 | if (!GET_CURRENT_ARG_TYPE(walk_state->arg_types)) { | |
216 | return_ACPI_STATUS(AE_AML_NO_OPERAND); | |
217 | } | |
218 | ||
219 | /* We know that this arg is a name, move to next arg */ | |
220 | ||
221 | INCREMENT_ARG_LIST(walk_state->arg_types); | |
222 | ||
223 | /* | |
224 | * Find the object. This will either insert the object into | |
225 | * the namespace or simply look it up | |
226 | */ | |
227 | walk_state->op = NULL; | |
228 | ||
229 | status = walk_state->descending_callback(walk_state, op); | |
230 | if (ACPI_FAILURE(status)) { | |
231 | ACPI_EXCEPTION((AE_INFO, status, "During name lookup/catalog")); | |
232 | return_ACPI_STATUS(status); | |
233 | } | |
234 | ||
9bc75cff | 235 | if (!*op) { |
4d0b4af9 MK |
236 | return_ACPI_STATUS(AE_CTRL_PARSE_CONTINUE); |
237 | } | |
238 | ||
239 | status = acpi_ps_next_parse_state(walk_state, *op, status); | |
240 | if (ACPI_FAILURE(status)) { | |
241 | if (status == AE_CTRL_PENDING) { | |
242 | return_ACPI_STATUS(AE_CTRL_PARSE_PENDING); | |
243 | } | |
244 | return_ACPI_STATUS(status); | |
245 | } | |
246 | ||
247 | acpi_ps_append_arg(*op, unnamed_op->common.value.arg); | |
248 | acpi_gbl_depth++; | |
249 | ||
941f48bb LM |
250 | if ((*op)->common.aml_opcode == AML_REGION_OP || |
251 | (*op)->common.aml_opcode == AML_DATA_REGION_OP) { | |
4d0b4af9 MK |
252 | /* |
253 | * Defer final parsing of an operation_region body, because we don't | |
254 | * have enough info in the first pass to parse it correctly (i.e., | |
255 | * there may be method calls within the term_arg elements of the body.) | |
256 | * | |
257 | * However, we must continue parsing because the opregion is not a | |
258 | * standalone package -- we don't know where the end is at this point. | |
259 | * | |
260 | * (Length is unknown until parse of the body complete) | |
261 | */ | |
262 | (*op)->named.data = aml_op_start; | |
263 | (*op)->named.length = 0; | |
264 | } | |
265 | ||
266 | return_ACPI_STATUS(AE_OK); | |
267 | } | |
268 | ||
269 | /******************************************************************************* | |
270 | * | |
271 | * FUNCTION: acpi_ps_create_op | |
272 | * | |
273 | * PARAMETERS: walk_state - Current state | |
274 | * aml_op_start - Op start in AML | |
275 | * new_op - Returned Op | |
276 | * | |
277 | * RETURN: Status | |
278 | * | |
279 | * DESCRIPTION: Get Op from AML | |
280 | * | |
281 | ******************************************************************************/ | |
282 | ||
283 | static acpi_status | |
284 | acpi_ps_create_op(struct acpi_walk_state *walk_state, | |
285 | u8 * aml_op_start, union acpi_parse_object **new_op) | |
286 | { | |
287 | acpi_status status = AE_OK; | |
288 | union acpi_parse_object *op; | |
289 | union acpi_parse_object *named_op = NULL; | |
4e3156b1 BM |
290 | union acpi_parse_object *parent_scope; |
291 | u8 argument_count; | |
292 | const struct acpi_opcode_info *op_info; | |
4d0b4af9 MK |
293 | |
294 | ACPI_FUNCTION_TRACE_PTR(ps_create_op, walk_state); | |
295 | ||
296 | status = acpi_ps_get_aml_opcode(walk_state); | |
297 | if (status == AE_CTRL_PARSE_CONTINUE) { | |
298 | return_ACPI_STATUS(AE_CTRL_PARSE_CONTINUE); | |
299 | } | |
300 | ||
301 | /* Create Op structure and append to parent's argument list */ | |
302 | ||
303 | walk_state->op_info = acpi_ps_get_opcode_info(walk_state->opcode); | |
304 | op = acpi_ps_alloc_op(walk_state->opcode); | |
305 | if (!op) { | |
306 | return_ACPI_STATUS(AE_NO_MEMORY); | |
307 | } | |
308 | ||
309 | if (walk_state->op_info->flags & AML_NAMED) { | |
310 | status = | |
311 | acpi_ps_build_named_op(walk_state, aml_op_start, op, | |
312 | &named_op); | |
313 | acpi_ps_free_op(op); | |
314 | if (ACPI_FAILURE(status)) { | |
315 | return_ACPI_STATUS(status); | |
316 | } | |
317 | ||
318 | *new_op = named_op; | |
319 | return_ACPI_STATUS(AE_OK); | |
320 | } | |
321 | ||
322 | /* Not a named opcode, just allocate Op and append to parent */ | |
323 | ||
324 | if (walk_state->op_info->flags & AML_CREATE) { | |
325 | /* | |
326 | * Backup to beginning of create_xXXfield declaration | |
327 | * body_length is unknown until we parse the body | |
328 | */ | |
329 | op->named.data = aml_op_start; | |
330 | op->named.length = 0; | |
331 | } | |
332 | ||
ef805d95 LM |
333 | if (walk_state->opcode == AML_BANK_FIELD_OP) { |
334 | /* | |
335 | * Backup to beginning of bank_field declaration | |
336 | * body_length is unknown until we parse the body | |
337 | */ | |
338 | op->named.data = aml_op_start; | |
339 | op->named.length = 0; | |
340 | } | |
341 | ||
4e3156b1 BM |
342 | parent_scope = acpi_ps_get_parent_scope(&(walk_state->parser_state)); |
343 | acpi_ps_append_arg(parent_scope, op); | |
344 | ||
345 | if (parent_scope) { | |
346 | op_info = | |
347 | acpi_ps_get_opcode_info(parent_scope->common.aml_opcode); | |
348 | if (op_info->flags & AML_HAS_TARGET) { | |
349 | argument_count = | |
350 | acpi_ps_get_argument_count(op_info->type); | |
351 | if (parent_scope->common.arg_list_length > | |
352 | argument_count) { | |
353 | op->common.flags |= ACPI_PARSEOP_TARGET; | |
354 | } | |
355 | } else if (parent_scope->common.aml_opcode == AML_INCREMENT_OP) { | |
356 | op->common.flags |= ACPI_PARSEOP_TARGET; | |
357 | } | |
358 | } | |
4d0b4af9 MK |
359 | |
360 | if (walk_state->descending_callback != NULL) { | |
361 | /* | |
362 | * Find the object. This will either insert the object into | |
363 | * the namespace or simply look it up | |
364 | */ | |
365 | walk_state->op = *new_op = op; | |
366 | ||
367 | status = walk_state->descending_callback(walk_state, &op); | |
368 | status = acpi_ps_next_parse_state(walk_state, op, status); | |
369 | if (status == AE_CTRL_PENDING) { | |
370 | status = AE_CTRL_PARSE_PENDING; | |
371 | } | |
372 | } | |
373 | ||
374 | return_ACPI_STATUS(status); | |
375 | } | |
376 | ||
377 | /******************************************************************************* | |
378 | * | |
379 | * FUNCTION: acpi_ps_get_arguments | |
380 | * | |
381 | * PARAMETERS: walk_state - Current state | |
382 | * aml_op_start - Op start in AML | |
383 | * Op - Current Op | |
384 | * | |
385 | * RETURN: Status | |
386 | * | |
387 | * DESCRIPTION: Get arguments for passed Op. | |
388 | * | |
389 | ******************************************************************************/ | |
390 | ||
391 | static acpi_status | |
392 | acpi_ps_get_arguments(struct acpi_walk_state *walk_state, | |
393 | u8 * aml_op_start, union acpi_parse_object *op) | |
394 | { | |
395 | acpi_status status = AE_OK; | |
396 | union acpi_parse_object *arg = NULL; | |
7f0c826a | 397 | const struct acpi_opcode_info *op_info; |
4d0b4af9 MK |
398 | |
399 | ACPI_FUNCTION_TRACE_PTR(ps_get_arguments, walk_state); | |
400 | ||
401 | switch (op->common.aml_opcode) { | |
402 | case AML_BYTE_OP: /* AML_BYTEDATA_ARG */ | |
403 | case AML_WORD_OP: /* AML_WORDDATA_ARG */ | |
404 | case AML_DWORD_OP: /* AML_DWORDATA_ARG */ | |
405 | case AML_QWORD_OP: /* AML_QWORDATA_ARG */ | |
406 | case AML_STRING_OP: /* AML_ASCIICHARLIST_ARG */ | |
407 | ||
408 | /* Fill in constant or string argument directly */ | |
409 | ||
410 | acpi_ps_get_next_simple_arg(&(walk_state->parser_state), | |
411 | GET_CURRENT_ARG_TYPE(walk_state-> | |
412 | arg_types), | |
413 | op); | |
414 | break; | |
415 | ||
416 | case AML_INT_NAMEPATH_OP: /* AML_NAMESTRING_ARG */ | |
417 | ||
418 | status = | |
419 | acpi_ps_get_next_namepath(walk_state, | |
420 | &(walk_state->parser_state), op, | |
421 | 1); | |
422 | if (ACPI_FAILURE(status)) { | |
423 | return_ACPI_STATUS(status); | |
424 | } | |
425 | ||
426 | walk_state->arg_types = 0; | |
427 | break; | |
428 | ||
429 | default: | |
430 | /* | |
431 | * Op is not a constant or string, append each argument to the Op | |
432 | */ | |
433 | while (GET_CURRENT_ARG_TYPE(walk_state->arg_types) | |
434 | && !walk_state->arg_count) { | |
435 | walk_state->aml_offset = | |
436 | (u32) ACPI_PTR_DIFF(walk_state->parser_state.aml, | |
437 | walk_state->parser_state. | |
438 | aml_start); | |
439 | ||
440 | status = | |
441 | acpi_ps_get_next_arg(walk_state, | |
442 | &(walk_state->parser_state), | |
443 | GET_CURRENT_ARG_TYPE | |
444 | (walk_state->arg_types), &arg); | |
445 | if (ACPI_FAILURE(status)) { | |
446 | return_ACPI_STATUS(status); | |
447 | } | |
448 | ||
449 | if (arg) { | |
450 | arg->common.aml_offset = walk_state->aml_offset; | |
451 | acpi_ps_append_arg(op, arg); | |
452 | } | |
453 | ||
454 | INCREMENT_ARG_LIST(walk_state->arg_types); | |
455 | } | |
456 | ||
7f0c826a LM |
457 | /* |
458 | * Handle executable code at "module-level". This refers to | |
459 | * executable opcodes that appear outside of any control method. | |
460 | */ | |
461 | if ((walk_state->pass_number <= ACPI_IMODE_LOAD_PASS2) && | |
4d0b4af9 MK |
462 | ((walk_state->parse_flags & ACPI_PARSE_DISASSEMBLE) == 0)) { |
463 | /* | |
464 | * We want to skip If/Else/While constructs during Pass1 because we | |
465 | * want to actually conditionally execute the code during Pass2. | |
466 | * | |
467 | * Except for disassembly, where we always want to walk the | |
468 | * If/Else/While packages | |
469 | */ | |
470 | switch (op->common.aml_opcode) { | |
471 | case AML_IF_OP: | |
472 | case AML_ELSE_OP: | |
473 | case AML_WHILE_OP: | |
474 | ||
7f0c826a LM |
475 | /* |
476 | * Currently supported module-level opcodes are: | |
477 | * IF/ELSE/WHILE. These appear to be the most common, | |
478 | * and easiest to support since they open an AML | |
479 | * package. | |
480 | */ | |
481 | if (walk_state->pass_number == | |
482 | ACPI_IMODE_LOAD_PASS1) { | |
9a884ab6 LM |
483 | acpi_ps_link_module_code(op->common. |
484 | parent, | |
485 | aml_op_start, | |
486 | (u32) | |
487 | (walk_state-> | |
7f0c826a LM |
488 | parser_state. |
489 | pkg_end - | |
9a884ab6 | 490 | aml_op_start), |
7f0c826a LM |
491 | walk_state-> |
492 | owner_id); | |
493 | } | |
494 | ||
4d0b4af9 MK |
495 | ACPI_DEBUG_PRINT((ACPI_DB_PARSE, |
496 | "Pass1: Skipping an If/Else/While body\n")); | |
497 | ||
498 | /* Skip body of if/else/while in pass 1 */ | |
499 | ||
500 | walk_state->parser_state.aml = | |
501 | walk_state->parser_state.pkg_end; | |
502 | walk_state->arg_count = 0; | |
503 | break; | |
504 | ||
505 | default: | |
7f0c826a LM |
506 | /* |
507 | * Check for an unsupported executable opcode at module | |
508 | * level. We must be in PASS1, the parent must be a SCOPE, | |
509 | * The opcode class must be EXECUTE, and the opcode must | |
510 | * not be an argument to another opcode. | |
511 | */ | |
512 | if ((walk_state->pass_number == | |
513 | ACPI_IMODE_LOAD_PASS1) | |
514 | && (op->common.parent->common.aml_opcode == | |
515 | AML_SCOPE_OP)) { | |
516 | op_info = | |
517 | acpi_ps_get_opcode_info(op->common. | |
518 | aml_opcode); | |
519 | if ((op_info->class == | |
520 | AML_CLASS_EXECUTE) && (!arg)) { | |
521 | ACPI_WARNING((AE_INFO, | |
522 | "Detected an unsupported executable opcode " | |
523 | "at module-level: [0x%.4X] at table offset 0x%.4X", | |
524 | op->common.aml_opcode, | |
525 | (u32)((aml_op_start - walk_state->parser_state.aml_start) | |
526 | + sizeof(struct acpi_table_header)))); | |
527 | } | |
528 | } | |
4d0b4af9 MK |
529 | break; |
530 | } | |
531 | } | |
7f0c826a LM |
532 | |
533 | /* Special processing for certain opcodes */ | |
4d0b4af9 MK |
534 | |
535 | switch (op->common.aml_opcode) { | |
536 | case AML_METHOD_OP: | |
537 | /* | |
538 | * Skip parsing of control method because we don't have enough | |
539 | * info in the first pass to parse it correctly. | |
540 | * | |
541 | * Save the length and address of the body | |
542 | */ | |
543 | op->named.data = walk_state->parser_state.aml; | |
544 | op->named.length = (u32) | |
545 | (walk_state->parser_state.pkg_end - | |
546 | walk_state->parser_state.aml); | |
547 | ||
548 | /* Skip body of method */ | |
549 | ||
550 | walk_state->parser_state.aml = | |
551 | walk_state->parser_state.pkg_end; | |
552 | walk_state->arg_count = 0; | |
553 | break; | |
554 | ||
555 | case AML_BUFFER_OP: | |
556 | case AML_PACKAGE_OP: | |
557 | case AML_VAR_PACKAGE_OP: | |
558 | ||
559 | if ((op->common.parent) && | |
560 | (op->common.parent->common.aml_opcode == | |
561 | AML_NAME_OP) | |
562 | && (walk_state->pass_number <= | |
563 | ACPI_IMODE_LOAD_PASS2)) { | |
564 | /* | |
565 | * Skip parsing of Buffers and Packages because we don't have | |
566 | * enough info in the first pass to parse them correctly. | |
567 | */ | |
568 | op->named.data = aml_op_start; | |
569 | op->named.length = (u32) | |
570 | (walk_state->parser_state.pkg_end - | |
571 | aml_op_start); | |
572 | ||
573 | /* Skip body */ | |
574 | ||
575 | walk_state->parser_state.aml = | |
576 | walk_state->parser_state.pkg_end; | |
577 | walk_state->arg_count = 0; | |
578 | } | |
579 | break; | |
580 | ||
581 | case AML_WHILE_OP: | |
582 | ||
583 | if (walk_state->control_state) { | |
584 | walk_state->control_state->control.package_end = | |
585 | walk_state->parser_state.pkg_end; | |
586 | } | |
587 | break; | |
588 | ||
589 | default: | |
590 | ||
591 | /* No action for all other opcodes */ | |
592 | break; | |
593 | } | |
594 | ||
595 | break; | |
596 | } | |
597 | ||
598 | return_ACPI_STATUS(AE_OK); | |
599 | } | |
600 | ||
7f0c826a LM |
601 | /******************************************************************************* |
602 | * | |
603 | * FUNCTION: acpi_ps_link_module_code | |
604 | * | |
9a884ab6 LM |
605 | * PARAMETERS: parent_op - Parent parser op |
606 | * aml_start - Pointer to the AML | |
7f0c826a LM |
607 | * aml_length - Length of executable AML |
608 | * owner_id - owner_id of module level code | |
609 | * | |
610 | * RETURN: None. | |
611 | * | |
612 | * DESCRIPTION: Wrap the module-level code with a method object and link the | |
613 | * object to the global list. Note, the mutex field of the method | |
614 | * object is used to link multiple module-level code objects. | |
615 | * | |
616 | ******************************************************************************/ | |
617 | ||
618 | static void | |
9a884ab6 LM |
619 | acpi_ps_link_module_code(union acpi_parse_object *parent_op, |
620 | u8 *aml_start, u32 aml_length, acpi_owner_id owner_id) | |
7f0c826a LM |
621 | { |
622 | union acpi_operand_object *prev; | |
623 | union acpi_operand_object *next; | |
624 | union acpi_operand_object *method_obj; | |
9a884ab6 | 625 | struct acpi_namespace_node *parent_node; |
7f0c826a LM |
626 | |
627 | /* Get the tail of the list */ | |
628 | ||
629 | prev = next = acpi_gbl_module_code_list; | |
630 | while (next) { | |
631 | prev = next; | |
632 | next = next->method.mutex; | |
633 | } | |
634 | ||
635 | /* | |
636 | * Insert the module level code into the list. Merge it if it is | |
637 | * adjacent to the previous element. | |
638 | */ | |
639 | if (!prev || | |
640 | ((prev->method.aml_start + prev->method.aml_length) != aml_start)) { | |
641 | ||
642 | /* Create, initialize, and link a new temporary method object */ | |
643 | ||
644 | method_obj = acpi_ut_create_internal_object(ACPI_TYPE_METHOD); | |
645 | if (!method_obj) { | |
646 | return; | |
647 | } | |
648 | ||
9a884ab6 LM |
649 | if (parent_op->common.node) { |
650 | parent_node = parent_op->common.node; | |
651 | } else { | |
652 | parent_node = acpi_gbl_root_node; | |
653 | } | |
654 | ||
7f0c826a LM |
655 | method_obj->method.aml_start = aml_start; |
656 | method_obj->method.aml_length = aml_length; | |
657 | method_obj->method.owner_id = owner_id; | |
658 | method_obj->method.flags |= AOPOBJ_MODULE_LEVEL; | |
659 | ||
9a884ab6 LM |
660 | /* |
661 | * Save the parent node in next_object. This is cheating, but we | |
662 | * don't want to expand the method object. | |
663 | */ | |
664 | method_obj->method.next_object = | |
665 | ACPI_CAST_PTR(union acpi_operand_object, parent_node); | |
666 | ||
7f0c826a LM |
667 | if (!prev) { |
668 | acpi_gbl_module_code_list = method_obj; | |
669 | } else { | |
670 | prev->method.mutex = method_obj; | |
671 | } | |
672 | } else { | |
673 | prev->method.aml_length += aml_length; | |
674 | } | |
675 | } | |
676 | ||
4d0b4af9 MK |
677 | /******************************************************************************* |
678 | * | |
679 | * FUNCTION: acpi_ps_complete_op | |
680 | * | |
681 | * PARAMETERS: walk_state - Current state | |
682 | * Op - Returned Op | |
683 | * Status - Parse status before complete Op | |
684 | * | |
685 | * RETURN: Status | |
686 | * | |
687 | * DESCRIPTION: Complete Op | |
688 | * | |
689 | ******************************************************************************/ | |
690 | ||
691 | static acpi_status | |
692 | acpi_ps_complete_op(struct acpi_walk_state *walk_state, | |
693 | union acpi_parse_object **op, acpi_status status) | |
694 | { | |
695 | acpi_status status2; | |
696 | ||
697 | ACPI_FUNCTION_TRACE_PTR(ps_complete_op, walk_state); | |
698 | ||
699 | /* | |
700 | * Finished one argument of the containing scope | |
701 | */ | |
702 | walk_state->parser_state.scope->parse_scope.arg_count--; | |
703 | ||
704 | /* Close this Op (will result in parse subtree deletion) */ | |
705 | ||
706 | status2 = acpi_ps_complete_this_op(walk_state, *op); | |
707 | if (ACPI_FAILURE(status2)) { | |
708 | return_ACPI_STATUS(status2); | |
709 | } | |
710 | ||
711 | *op = NULL; | |
712 | ||
713 | switch (status) { | |
714 | case AE_OK: | |
715 | break; | |
716 | ||
717 | case AE_CTRL_TRANSFER: | |
718 | ||
719 | /* We are about to transfer to a called method */ | |
720 | ||
721 | walk_state->prev_op = NULL; | |
722 | walk_state->prev_arg_types = walk_state->arg_types; | |
723 | return_ACPI_STATUS(status); | |
724 | ||
725 | case AE_CTRL_END: | |
726 | ||
727 | acpi_ps_pop_scope(&(walk_state->parser_state), op, | |
728 | &walk_state->arg_types, | |
729 | &walk_state->arg_count); | |
730 | ||
731 | if (*op) { | |
732 | walk_state->op = *op; | |
733 | walk_state->op_info = | |
734 | acpi_ps_get_opcode_info((*op)->common.aml_opcode); | |
735 | walk_state->opcode = (*op)->common.aml_opcode; | |
736 | ||
737 | status = walk_state->ascending_callback(walk_state); | |
738 | status = | |
739 | acpi_ps_next_parse_state(walk_state, *op, status); | |
740 | ||
741 | status2 = acpi_ps_complete_this_op(walk_state, *op); | |
742 | if (ACPI_FAILURE(status2)) { | |
743 | return_ACPI_STATUS(status2); | |
744 | } | |
745 | } | |
746 | ||
747 | status = AE_OK; | |
748 | break; | |
749 | ||
750 | case AE_CTRL_BREAK: | |
751 | case AE_CTRL_CONTINUE: | |
752 | ||
753 | /* Pop off scopes until we find the While */ | |
754 | ||
755 | while (!(*op) || ((*op)->common.aml_opcode != AML_WHILE_OP)) { | |
756 | acpi_ps_pop_scope(&(walk_state->parser_state), op, | |
757 | &walk_state->arg_types, | |
758 | &walk_state->arg_count); | |
4d0b4af9 MK |
759 | } |
760 | ||
761 | /* Close this iteration of the While loop */ | |
762 | ||
763 | walk_state->op = *op; | |
764 | walk_state->op_info = | |
765 | acpi_ps_get_opcode_info((*op)->common.aml_opcode); | |
766 | walk_state->opcode = (*op)->common.aml_opcode; | |
767 | ||
768 | status = walk_state->ascending_callback(walk_state); | |
769 | status = acpi_ps_next_parse_state(walk_state, *op, status); | |
770 | ||
771 | status2 = acpi_ps_complete_this_op(walk_state, *op); | |
772 | if (ACPI_FAILURE(status2)) { | |
773 | return_ACPI_STATUS(status2); | |
774 | } | |
775 | ||
776 | status = AE_OK; | |
777 | break; | |
778 | ||
779 | case AE_CTRL_TERMINATE: | |
780 | ||
781 | /* Clean up */ | |
782 | do { | |
783 | if (*op) { | |
784 | status2 = | |
785 | acpi_ps_complete_this_op(walk_state, *op); | |
786 | if (ACPI_FAILURE(status2)) { | |
787 | return_ACPI_STATUS(status2); | |
788 | } | |
4d0b4af9 MK |
789 | |
790 | acpi_ut_delete_generic_state | |
791 | (acpi_ut_pop_generic_state | |
792 | (&walk_state->control_state)); | |
793 | } | |
794 | ||
795 | acpi_ps_pop_scope(&(walk_state->parser_state), op, | |
796 | &walk_state->arg_types, | |
797 | &walk_state->arg_count); | |
798 | ||
799 | } while (*op); | |
800 | ||
801 | return_ACPI_STATUS(AE_OK); | |
802 | ||
803 | default: /* All other non-AE_OK status */ | |
804 | ||
805 | do { | |
806 | if (*op) { | |
807 | status2 = | |
808 | acpi_ps_complete_this_op(walk_state, *op); | |
809 | if (ACPI_FAILURE(status2)) { | |
810 | return_ACPI_STATUS(status2); | |
811 | } | |
812 | } | |
813 | ||
814 | acpi_ps_pop_scope(&(walk_state->parser_state), op, | |
815 | &walk_state->arg_types, | |
816 | &walk_state->arg_count); | |
817 | ||
818 | } while (*op); | |
819 | ||
820 | #if 0 | |
821 | /* | |
822 | * TBD: Cleanup parse ops on error | |
823 | */ | |
824 | if (*op == NULL) { | |
825 | acpi_ps_pop_scope(parser_state, op, | |
826 | &walk_state->arg_types, | |
827 | &walk_state->arg_count); | |
828 | } | |
829 | #endif | |
830 | walk_state->prev_op = NULL; | |
831 | walk_state->prev_arg_types = walk_state->arg_types; | |
832 | return_ACPI_STATUS(status); | |
833 | } | |
834 | ||
835 | /* This scope complete? */ | |
836 | ||
837 | if (acpi_ps_has_completed_scope(&(walk_state->parser_state))) { | |
838 | acpi_ps_pop_scope(&(walk_state->parser_state), op, | |
839 | &walk_state->arg_types, | |
840 | &walk_state->arg_count); | |
841 | ACPI_DEBUG_PRINT((ACPI_DB_PARSE, "Popped scope, Op=%p\n", *op)); | |
842 | } else { | |
843 | *op = NULL; | |
844 | } | |
845 | ||
8bd108d1 AS |
846 | ACPI_PREEMPTION_POINT(); |
847 | ||
4d0b4af9 MK |
848 | return_ACPI_STATUS(AE_OK); |
849 | } | |
850 | ||
851 | /******************************************************************************* | |
852 | * | |
853 | * FUNCTION: acpi_ps_complete_final_op | |
854 | * | |
855 | * PARAMETERS: walk_state - Current state | |
856 | * Op - Current Op | |
857 | * Status - Current parse status before complete last | |
858 | * Op | |
859 | * | |
860 | * RETURN: Status | |
861 | * | |
862 | * DESCRIPTION: Complete last Op. | |
863 | * | |
864 | ******************************************************************************/ | |
865 | ||
866 | static acpi_status | |
867 | acpi_ps_complete_final_op(struct acpi_walk_state *walk_state, | |
868 | union acpi_parse_object *op, acpi_status status) | |
869 | { | |
870 | acpi_status status2; | |
871 | ||
872 | ACPI_FUNCTION_TRACE_PTR(ps_complete_final_op, walk_state); | |
873 | ||
874 | /* | |
875 | * Complete the last Op (if not completed), and clear the scope stack. | |
876 | * It is easily possible to end an AML "package" with an unbounded number | |
877 | * of open scopes (such as when several ASL blocks are closed with | |
878 | * sequential closing braces). We want to terminate each one cleanly. | |
879 | */ | |
880 | ACPI_DEBUG_PRINT((ACPI_DB_PARSE, "AML package complete at Op %p\n", | |
881 | op)); | |
882 | do { | |
883 | if (op) { | |
884 | if (walk_state->ascending_callback != NULL) { | |
885 | walk_state->op = op; | |
886 | walk_state->op_info = | |
887 | acpi_ps_get_opcode_info(op->common. | |
888 | aml_opcode); | |
889 | walk_state->opcode = op->common.aml_opcode; | |
890 | ||
891 | status = | |
892 | walk_state->ascending_callback(walk_state); | |
893 | status = | |
894 | acpi_ps_next_parse_state(walk_state, op, | |
895 | status); | |
896 | if (status == AE_CTRL_PENDING) { | |
897 | status = | |
898 | acpi_ps_complete_op(walk_state, &op, | |
899 | AE_OK); | |
900 | if (ACPI_FAILURE(status)) { | |
901 | return_ACPI_STATUS(status); | |
902 | } | |
903 | } | |
904 | ||
905 | if (status == AE_CTRL_TERMINATE) { | |
906 | status = AE_OK; | |
907 | ||
908 | /* Clean up */ | |
909 | do { | |
910 | if (op) { | |
911 | status2 = | |
912 | acpi_ps_complete_this_op | |
913 | (walk_state, op); | |
914 | if (ACPI_FAILURE | |
915 | (status2)) { | |
916 | return_ACPI_STATUS | |
917 | (status2); | |
918 | } | |
919 | } | |
920 | ||
921 | acpi_ps_pop_scope(& | |
922 | (walk_state-> | |
923 | parser_state), | |
924 | &op, | |
925 | &walk_state-> | |
926 | arg_types, | |
927 | &walk_state-> | |
928 | arg_count); | |
929 | ||
930 | } while (op); | |
931 | ||
932 | return_ACPI_STATUS(status); | |
933 | } | |
934 | ||
935 | else if (ACPI_FAILURE(status)) { | |
936 | ||
937 | /* First error is most important */ | |
938 | ||
939 | (void) | |
940 | acpi_ps_complete_this_op(walk_state, | |
941 | op); | |
942 | return_ACPI_STATUS(status); | |
943 | } | |
944 | } | |
945 | ||
946 | status2 = acpi_ps_complete_this_op(walk_state, op); | |
947 | if (ACPI_FAILURE(status2)) { | |
948 | return_ACPI_STATUS(status2); | |
949 | } | |
950 | } | |
951 | ||
952 | acpi_ps_pop_scope(&(walk_state->parser_state), &op, | |
953 | &walk_state->arg_types, | |
954 | &walk_state->arg_count); | |
955 | ||
956 | } while (op); | |
957 | ||
958 | return_ACPI_STATUS(status); | |
959 | } | |
960 | ||
73459f73 RM |
961 | /******************************************************************************* |
962 | * | |
963 | * FUNCTION: acpi_ps_parse_loop | |
964 | * | |
965 | * PARAMETERS: walk_state - Current state | |
966 | * | |
967 | * RETURN: Status | |
968 | * | |
969 | * DESCRIPTION: Parse AML (pointed to by the current parser state) and return | |
970 | * a tree of ops. | |
971 | * | |
972 | ******************************************************************************/ | |
973 | ||
4be44fcd | 974 | acpi_status acpi_ps_parse_loop(struct acpi_walk_state *walk_state) |
73459f73 | 975 | { |
4be44fcd | 976 | acpi_status status = AE_OK; |
4be44fcd | 977 | union acpi_parse_object *op = NULL; /* current op */ |
4be44fcd LB |
978 | struct acpi_parse_state *parser_state; |
979 | u8 *aml_op_start = NULL; | |
73459f73 | 980 | |
b229cf92 | 981 | ACPI_FUNCTION_TRACE_PTR(ps_parse_loop, walk_state); |
73459f73 RM |
982 | |
983 | if (walk_state->descending_callback == NULL) { | |
4be44fcd | 984 | return_ACPI_STATUS(AE_BAD_PARAMETER); |
73459f73 RM |
985 | } |
986 | ||
987 | parser_state = &walk_state->parser_state; | |
988 | walk_state->arg_types = 0; | |
989 | ||
990 | #if (!defined (ACPI_NO_METHOD_EXECUTION) && !defined (ACPI_CONSTANT_EVAL_ONLY)) | |
991 | ||
992 | if (walk_state->walk_type & ACPI_WALK_METHOD_RESTART) { | |
52fc0b02 | 993 | |
73459f73 RM |
994 | /* We are restarting a preempted control method */ |
995 | ||
4be44fcd | 996 | if (acpi_ps_has_completed_scope(parser_state)) { |
73459f73 RM |
997 | /* |
998 | * We must check if a predicate to an IF or WHILE statement | |
999 | * was just completed | |
1000 | */ | |
1001 | if ((parser_state->scope->parse_scope.op) && | |
4be44fcd LB |
1002 | ((parser_state->scope->parse_scope.op->common. |
1003 | aml_opcode == AML_IF_OP) | |
1004 | || (parser_state->scope->parse_scope.op->common. | |
1005 | aml_opcode == AML_WHILE_OP)) | |
1006 | && (walk_state->control_state) | |
1007 | && (walk_state->control_state->common.state == | |
1008 | ACPI_CONTROL_PREDICATE_EXECUTING)) { | |
73459f73 RM |
1009 | /* |
1010 | * A predicate was just completed, get the value of the | |
1011 | * predicate and branch based on that value | |
1012 | */ | |
1013 | walk_state->op = NULL; | |
4be44fcd LB |
1014 | status = |
1015 | acpi_ds_get_predicate_value(walk_state, | |
1016 | ACPI_TO_POINTER | |
1017 | (TRUE)); | |
1018 | if (ACPI_FAILURE(status) | |
1019 | && ((status & AE_CODE_MASK) != | |
1020 | AE_CODE_CONTROL)) { | |
73459f73 | 1021 | if (status == AE_AML_NO_RETURN_VALUE) { |
b8e4d893 BM |
1022 | ACPI_EXCEPTION((AE_INFO, status, |
1023 | "Invoked method did not return a value")); | |
73459f73 RM |
1024 | |
1025 | } | |
4d0b4af9 | 1026 | |
b8e4d893 | 1027 | ACPI_EXCEPTION((AE_INFO, status, |
b229cf92 | 1028 | "GetPredicate Failed")); |
4be44fcd | 1029 | return_ACPI_STATUS(status); |
73459f73 RM |
1030 | } |
1031 | ||
4be44fcd LB |
1032 | status = |
1033 | acpi_ps_next_parse_state(walk_state, op, | |
1034 | status); | |
73459f73 RM |
1035 | } |
1036 | ||
4be44fcd LB |
1037 | acpi_ps_pop_scope(parser_state, &op, |
1038 | &walk_state->arg_types, | |
1039 | &walk_state->arg_count); | |
1040 | ACPI_DEBUG_PRINT((ACPI_DB_PARSE, | |
1041 | "Popped scope, Op=%p\n", op)); | |
1042 | } else if (walk_state->prev_op) { | |
52fc0b02 | 1043 | |
73459f73 RM |
1044 | /* We were in the middle of an op */ |
1045 | ||
4d0b4af9 MK |
1046 | op = walk_state->prev_op; |
1047 | walk_state->arg_types = walk_state->prev_arg_types; | |
1048 | } | |
1049 | } | |
1050 | #endif | |
73459f73 | 1051 | |
4d0b4af9 | 1052 | /* Iterative parsing loop, while there is more AML to process: */ |
73459f73 | 1053 | |
4d0b4af9 MK |
1054 | while ((parser_state->aml < parser_state->aml_end) || (op)) { |
1055 | aml_op_start = parser_state->aml; | |
1056 | if (!op) { | |
1057 | status = | |
1058 | acpi_ps_create_op(walk_state, aml_op_start, &op); | |
1059 | if (ACPI_FAILURE(status)) { | |
1060 | if (status == AE_CTRL_PARSE_CONTINUE) { | |
73459f73 RM |
1061 | continue; |
1062 | } | |
1063 | ||
4d0b4af9 | 1064 | if (status == AE_CTRL_PARSE_PENDING) { |
73459f73 | 1065 | status = AE_OK; |
73459f73 RM |
1066 | } |
1067 | ||
4d0b4af9 MK |
1068 | status = |
1069 | acpi_ps_complete_op(walk_state, &op, | |
1070 | status); | |
4be44fcd | 1071 | if (ACPI_FAILURE(status)) { |
4d0b4af9 | 1072 | return_ACPI_STATUS(status); |
73459f73 RM |
1073 | } |
1074 | ||
4d0b4af9 | 1075 | continue; |
73459f73 RM |
1076 | } |
1077 | ||
1078 | op->common.aml_offset = walk_state->aml_offset; | |
1079 | ||
1080 | if (walk_state->op_info) { | |
4be44fcd | 1081 | ACPI_DEBUG_PRINT((ACPI_DB_PARSE, |
b229cf92 | 1082 | "Opcode %4.4X [%s] Op %p Aml %p AmlOffset %5.5X\n", |
4be44fcd LB |
1083 | (u32) op->common.aml_opcode, |
1084 | walk_state->op_info->name, op, | |
1085 | parser_state->aml, | |
1086 | op->common.aml_offset)); | |
73459f73 RM |
1087 | } |
1088 | } | |
1089 | ||
73459f73 RM |
1090 | /* |
1091 | * Start arg_count at zero because we don't know if there are | |
1092 | * any args yet | |
1093 | */ | |
1094 | walk_state->arg_count = 0; | |
1095 | ||
1096 | /* Are there any arguments that must be processed? */ | |
1097 | ||
1098 | if (walk_state->arg_types) { | |
52fc0b02 | 1099 | |
73459f73 RM |
1100 | /* Get arguments */ |
1101 | ||
4d0b4af9 MK |
1102 | status = |
1103 | acpi_ps_get_arguments(walk_state, aml_op_start, op); | |
1104 | if (ACPI_FAILURE(status)) { | |
4be44fcd | 1105 | status = |
4d0b4af9 MK |
1106 | acpi_ps_complete_op(walk_state, &op, |
1107 | status); | |
4be44fcd | 1108 | if (ACPI_FAILURE(status)) { |
4d0b4af9 | 1109 | return_ACPI_STATUS(status); |
73459f73 | 1110 | } |
73459f73 | 1111 | |
4d0b4af9 | 1112 | continue; |
73459f73 RM |
1113 | } |
1114 | } | |
1115 | ||
1116 | /* Check for arguments that need to be processed */ | |
1117 | ||
1118 | if (walk_state->arg_count) { | |
1119 | /* | |
1120 | * There are arguments (complex ones), push Op and | |
1121 | * prepare for argument | |
1122 | */ | |
4be44fcd LB |
1123 | status = acpi_ps_push_scope(parser_state, op, |
1124 | walk_state->arg_types, | |
1125 | walk_state->arg_count); | |
1126 | if (ACPI_FAILURE(status)) { | |
4d0b4af9 MK |
1127 | status = |
1128 | acpi_ps_complete_op(walk_state, &op, | |
1129 | status); | |
1130 | if (ACPI_FAILURE(status)) { | |
1131 | return_ACPI_STATUS(status); | |
1132 | } | |
1133 | ||
1134 | continue; | |
73459f73 | 1135 | } |
4d0b4af9 | 1136 | |
73459f73 RM |
1137 | op = NULL; |
1138 | continue; | |
1139 | } | |
1140 | ||
1141 | /* | |
1142 | * All arguments have been processed -- Op is complete, | |
1143 | * prepare for next | |
1144 | */ | |
4be44fcd LB |
1145 | walk_state->op_info = |
1146 | acpi_ps_get_opcode_info(op->common.aml_opcode); | |
73459f73 RM |
1147 | if (walk_state->op_info->flags & AML_NAMED) { |
1148 | if (acpi_gbl_depth) { | |
1149 | acpi_gbl_depth--; | |
1150 | } | |
1151 | ||
941f48bb LM |
1152 | if (op->common.aml_opcode == AML_REGION_OP || |
1153 | op->common.aml_opcode == AML_DATA_REGION_OP) { | |
73459f73 RM |
1154 | /* |
1155 | * Skip parsing of control method or opregion body, | |
1156 | * because we don't have enough info in the first pass | |
1157 | * to parse them correctly. | |
1158 | * | |
1159 | * Completed parsing an op_region declaration, we now | |
1160 | * know the length. | |
1161 | */ | |
4be44fcd LB |
1162 | op->named.length = |
1163 | (u32) (parser_state->aml - op->named.data); | |
73459f73 RM |
1164 | } |
1165 | } | |
1166 | ||
1167 | if (walk_state->op_info->flags & AML_CREATE) { | |
1168 | /* | |
1169 | * Backup to beginning of create_xXXfield declaration (1 for | |
1170 | * Opcode) | |
1171 | * | |
1172 | * body_length is unknown until we parse the body | |
1173 | */ | |
4be44fcd LB |
1174 | op->named.length = |
1175 | (u32) (parser_state->aml - op->named.data); | |
73459f73 RM |
1176 | } |
1177 | ||
ef805d95 LM |
1178 | if (op->common.aml_opcode == AML_BANK_FIELD_OP) { |
1179 | /* | |
1180 | * Backup to beginning of bank_field declaration | |
1181 | * | |
1182 | * body_length is unknown until we parse the body | |
1183 | */ | |
1184 | op->named.length = | |
1185 | (u32) (parser_state->aml - op->named.data); | |
1186 | } | |
1187 | ||
73459f73 RM |
1188 | /* This op complete, notify the dispatcher */ |
1189 | ||
1190 | if (walk_state->ascending_callback != NULL) { | |
4be44fcd | 1191 | walk_state->op = op; |
73459f73 RM |
1192 | walk_state->opcode = op->common.aml_opcode; |
1193 | ||
4be44fcd LB |
1194 | status = walk_state->ascending_callback(walk_state); |
1195 | status = | |
1196 | acpi_ps_next_parse_state(walk_state, op, status); | |
73459f73 RM |
1197 | if (status == AE_CTRL_PENDING) { |
1198 | status = AE_OK; | |
73459f73 RM |
1199 | } |
1200 | } | |
1201 | ||
4d0b4af9 MK |
1202 | status = acpi_ps_complete_op(walk_state, &op, status); |
1203 | if (ACPI_FAILURE(status)) { | |
4be44fcd | 1204 | return_ACPI_STATUS(status); |
73459f73 RM |
1205 | } |
1206 | ||
4be44fcd | 1207 | } /* while parser_state->Aml */ |
73459f73 | 1208 | |
4d0b4af9 | 1209 | status = acpi_ps_complete_final_op(walk_state, op, status); |
4be44fcd | 1210 | return_ACPI_STATUS(status); |
73459f73 | 1211 | } |