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73459f73 RM |
1 | /****************************************************************************** |
2 | * | |
3 | * Module Name: psloop - Main AML parse loop | |
4 | * | |
5 | *****************************************************************************/ | |
6 | ||
7 | /* | |
77848130 | 8 | * Copyright (C) 2000 - 2012, 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 | ||
97171c6b | 136 | /* The opcode is unrecognized. Complain and skip unknown opcodes */ |
4d0b4af9 | 137 | |
00eb3255 BM |
138 | if (walk_state->pass_number == 2) { |
139 | ACPI_ERROR((AE_INFO, | |
140 | "Unknown opcode 0x%.2X at table offset 0x%.4X, ignoring", | |
141 | walk_state->opcode, | |
17b1f45a BM |
142 | (u32)(walk_state->aml_offset + |
143 | sizeof(struct acpi_table_header)))); | |
4d0b4af9 | 144 | |
97171c6b | 145 | ACPI_DUMP_BUFFER(walk_state->parser_state.aml - 16, 48); |
4d0b4af9 | 146 | |
00eb3255 | 147 | #ifdef ACPI_ASL_COMPILER |
97171c6b BM |
148 | /* |
149 | * This is executed for the disassembler only. Output goes | |
150 | * to the disassembled ASL output file. | |
151 | */ | |
00eb3255 BM |
152 | acpi_os_printf |
153 | ("/*\nError: Unknown opcode 0x%.2X at table offset 0x%.4X, context:\n", | |
154 | walk_state->opcode, | |
17b1f45a BM |
155 | (u32)(walk_state->aml_offset + |
156 | sizeof(struct acpi_table_header))); | |
00eb3255 | 157 | |
97171c6b | 158 | /* Dump the context surrounding the invalid opcode */ |
00eb3255 | 159 | |
97171c6b BM |
160 | acpi_ut_dump_buffer(((u8 *)walk_state->parser_state. |
161 | aml - 16), 48, DB_BYTE_DISPLAY, | |
162 | walk_state->aml_offset + | |
163 | sizeof(struct acpi_table_header) - | |
164 | 16); | |
00eb3255 BM |
165 | acpi_os_printf(" */\n"); |
166 | #endif | |
167 | } | |
168 | ||
97171c6b | 169 | /* Increment past one-byte or two-byte opcode */ |
4d0b4af9 MK |
170 | |
171 | walk_state->parser_state.aml++; | |
97171c6b | 172 | if (walk_state->opcode > 0xFF) { /* Can only happen if first byte is 0x5B */ |
00eb3255 BM |
173 | walk_state->parser_state.aml++; |
174 | } | |
175 | ||
4d0b4af9 MK |
176 | return_ACPI_STATUS(AE_CTRL_PARSE_CONTINUE); |
177 | ||
178 | default: | |
179 | ||
180 | /* Found opcode info, this is a normal opcode */ | |
181 | ||
182 | walk_state->parser_state.aml += | |
183 | acpi_ps_get_opcode_size(walk_state->opcode); | |
184 | walk_state->arg_types = walk_state->op_info->parse_args; | |
185 | break; | |
186 | } | |
187 | ||
188 | return_ACPI_STATUS(AE_OK); | |
189 | } | |
190 | ||
191 | /******************************************************************************* | |
192 | * | |
193 | * FUNCTION: acpi_ps_build_named_op | |
194 | * | |
195 | * PARAMETERS: walk_state - Current state | |
196 | * aml_op_start - Begin of named Op in AML | |
197 | * unnamed_op - Early Op (not a named Op) | |
ba494bee | 198 | * op - Returned Op |
4d0b4af9 MK |
199 | * |
200 | * RETURN: Status | |
201 | * | |
202 | * DESCRIPTION: Parse a named Op | |
203 | * | |
204 | ******************************************************************************/ | |
205 | ||
206 | static acpi_status | |
207 | acpi_ps_build_named_op(struct acpi_walk_state *walk_state, | |
208 | u8 * aml_op_start, | |
209 | union acpi_parse_object *unnamed_op, | |
210 | union acpi_parse_object **op) | |
211 | { | |
212 | acpi_status status = AE_OK; | |
213 | union acpi_parse_object *arg = NULL; | |
214 | ||
215 | ACPI_FUNCTION_TRACE_PTR(ps_build_named_op, walk_state); | |
216 | ||
217 | unnamed_op->common.value.arg = NULL; | |
4e3156b1 | 218 | unnamed_op->common.arg_list_length = 0; |
4d0b4af9 MK |
219 | unnamed_op->common.aml_opcode = walk_state->opcode; |
220 | ||
221 | /* | |
222 | * Get and append arguments until we find the node that contains | |
223 | * the name (the type ARGP_NAME). | |
224 | */ | |
225 | while (GET_CURRENT_ARG_TYPE(walk_state->arg_types) && | |
226 | (GET_CURRENT_ARG_TYPE(walk_state->arg_types) != ARGP_NAME)) { | |
227 | status = | |
228 | acpi_ps_get_next_arg(walk_state, | |
229 | &(walk_state->parser_state), | |
230 | GET_CURRENT_ARG_TYPE(walk_state-> | |
231 | arg_types), &arg); | |
232 | if (ACPI_FAILURE(status)) { | |
233 | return_ACPI_STATUS(status); | |
234 | } | |
235 | ||
236 | acpi_ps_append_arg(unnamed_op, arg); | |
237 | INCREMENT_ARG_LIST(walk_state->arg_types); | |
238 | } | |
239 | ||
240 | /* | |
241 | * Make sure that we found a NAME and didn't run out of arguments | |
242 | */ | |
243 | if (!GET_CURRENT_ARG_TYPE(walk_state->arg_types)) { | |
244 | return_ACPI_STATUS(AE_AML_NO_OPERAND); | |
245 | } | |
246 | ||
247 | /* We know that this arg is a name, move to next arg */ | |
248 | ||
249 | INCREMENT_ARG_LIST(walk_state->arg_types); | |
250 | ||
251 | /* | |
252 | * Find the object. This will either insert the object into | |
253 | * the namespace or simply look it up | |
254 | */ | |
255 | walk_state->op = NULL; | |
256 | ||
257 | status = walk_state->descending_callback(walk_state, op); | |
258 | if (ACPI_FAILURE(status)) { | |
259 | ACPI_EXCEPTION((AE_INFO, status, "During name lookup/catalog")); | |
260 | return_ACPI_STATUS(status); | |
261 | } | |
262 | ||
9bc75cff | 263 | if (!*op) { |
4d0b4af9 MK |
264 | return_ACPI_STATUS(AE_CTRL_PARSE_CONTINUE); |
265 | } | |
266 | ||
267 | status = acpi_ps_next_parse_state(walk_state, *op, status); | |
268 | if (ACPI_FAILURE(status)) { | |
269 | if (status == AE_CTRL_PENDING) { | |
270 | return_ACPI_STATUS(AE_CTRL_PARSE_PENDING); | |
271 | } | |
272 | return_ACPI_STATUS(status); | |
273 | } | |
274 | ||
275 | acpi_ps_append_arg(*op, unnamed_op->common.value.arg); | |
276 | acpi_gbl_depth++; | |
277 | ||
941f48bb LM |
278 | if ((*op)->common.aml_opcode == AML_REGION_OP || |
279 | (*op)->common.aml_opcode == AML_DATA_REGION_OP) { | |
4d0b4af9 MK |
280 | /* |
281 | * Defer final parsing of an operation_region body, because we don't | |
282 | * have enough info in the first pass to parse it correctly (i.e., | |
283 | * there may be method calls within the term_arg elements of the body.) | |
284 | * | |
285 | * However, we must continue parsing because the opregion is not a | |
286 | * standalone package -- we don't know where the end is at this point. | |
287 | * | |
288 | * (Length is unknown until parse of the body complete) | |
289 | */ | |
290 | (*op)->named.data = aml_op_start; | |
291 | (*op)->named.length = 0; | |
292 | } | |
293 | ||
294 | return_ACPI_STATUS(AE_OK); | |
295 | } | |
296 | ||
297 | /******************************************************************************* | |
298 | * | |
299 | * FUNCTION: acpi_ps_create_op | |
300 | * | |
301 | * PARAMETERS: walk_state - Current state | |
302 | * aml_op_start - Op start in AML | |
303 | * new_op - Returned Op | |
304 | * | |
305 | * RETURN: Status | |
306 | * | |
307 | * DESCRIPTION: Get Op from AML | |
308 | * | |
309 | ******************************************************************************/ | |
310 | ||
311 | static acpi_status | |
312 | acpi_ps_create_op(struct acpi_walk_state *walk_state, | |
313 | u8 * aml_op_start, union acpi_parse_object **new_op) | |
314 | { | |
315 | acpi_status status = AE_OK; | |
316 | union acpi_parse_object *op; | |
317 | union acpi_parse_object *named_op = NULL; | |
4e3156b1 BM |
318 | union acpi_parse_object *parent_scope; |
319 | u8 argument_count; | |
320 | const struct acpi_opcode_info *op_info; | |
4d0b4af9 MK |
321 | |
322 | ACPI_FUNCTION_TRACE_PTR(ps_create_op, walk_state); | |
323 | ||
324 | status = acpi_ps_get_aml_opcode(walk_state); | |
325 | if (status == AE_CTRL_PARSE_CONTINUE) { | |
326 | return_ACPI_STATUS(AE_CTRL_PARSE_CONTINUE); | |
327 | } | |
328 | ||
329 | /* Create Op structure and append to parent's argument list */ | |
330 | ||
331 | walk_state->op_info = acpi_ps_get_opcode_info(walk_state->opcode); | |
332 | op = acpi_ps_alloc_op(walk_state->opcode); | |
333 | if (!op) { | |
334 | return_ACPI_STATUS(AE_NO_MEMORY); | |
335 | } | |
336 | ||
337 | if (walk_state->op_info->flags & AML_NAMED) { | |
338 | status = | |
339 | acpi_ps_build_named_op(walk_state, aml_op_start, op, | |
340 | &named_op); | |
341 | acpi_ps_free_op(op); | |
342 | if (ACPI_FAILURE(status)) { | |
343 | return_ACPI_STATUS(status); | |
344 | } | |
345 | ||
346 | *new_op = named_op; | |
347 | return_ACPI_STATUS(AE_OK); | |
348 | } | |
349 | ||
350 | /* Not a named opcode, just allocate Op and append to parent */ | |
351 | ||
352 | if (walk_state->op_info->flags & AML_CREATE) { | |
353 | /* | |
ba494bee | 354 | * Backup to beginning of create_XXXfield declaration |
4d0b4af9 MK |
355 | * body_length is unknown until we parse the body |
356 | */ | |
357 | op->named.data = aml_op_start; | |
358 | op->named.length = 0; | |
359 | } | |
360 | ||
ef805d95 LM |
361 | if (walk_state->opcode == AML_BANK_FIELD_OP) { |
362 | /* | |
363 | * Backup to beginning of bank_field 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 | ||
4e3156b1 BM |
370 | parent_scope = acpi_ps_get_parent_scope(&(walk_state->parser_state)); |
371 | acpi_ps_append_arg(parent_scope, op); | |
372 | ||
373 | if (parent_scope) { | |
374 | op_info = | |
375 | acpi_ps_get_opcode_info(parent_scope->common.aml_opcode); | |
376 | if (op_info->flags & AML_HAS_TARGET) { | |
377 | argument_count = | |
378 | acpi_ps_get_argument_count(op_info->type); | |
379 | if (parent_scope->common.arg_list_length > | |
380 | argument_count) { | |
381 | op->common.flags |= ACPI_PARSEOP_TARGET; | |
382 | } | |
383 | } else if (parent_scope->common.aml_opcode == AML_INCREMENT_OP) { | |
384 | op->common.flags |= ACPI_PARSEOP_TARGET; | |
385 | } | |
386 | } | |
4d0b4af9 MK |
387 | |
388 | if (walk_state->descending_callback != NULL) { | |
389 | /* | |
390 | * Find the object. This will either insert the object into | |
391 | * the namespace or simply look it up | |
392 | */ | |
393 | walk_state->op = *new_op = op; | |
394 | ||
395 | status = walk_state->descending_callback(walk_state, &op); | |
396 | status = acpi_ps_next_parse_state(walk_state, op, status); | |
397 | if (status == AE_CTRL_PENDING) { | |
398 | status = AE_CTRL_PARSE_PENDING; | |
399 | } | |
400 | } | |
401 | ||
402 | return_ACPI_STATUS(status); | |
403 | } | |
404 | ||
405 | /******************************************************************************* | |
406 | * | |
407 | * FUNCTION: acpi_ps_get_arguments | |
408 | * | |
409 | * PARAMETERS: walk_state - Current state | |
410 | * aml_op_start - Op start in AML | |
ba494bee | 411 | * op - Current Op |
4d0b4af9 MK |
412 | * |
413 | * RETURN: Status | |
414 | * | |
415 | * DESCRIPTION: Get arguments for passed Op. | |
416 | * | |
417 | ******************************************************************************/ | |
418 | ||
419 | static acpi_status | |
420 | acpi_ps_get_arguments(struct acpi_walk_state *walk_state, | |
421 | u8 * aml_op_start, union acpi_parse_object *op) | |
422 | { | |
423 | acpi_status status = AE_OK; | |
424 | union acpi_parse_object *arg = NULL; | |
7f0c826a | 425 | const struct acpi_opcode_info *op_info; |
4d0b4af9 MK |
426 | |
427 | ACPI_FUNCTION_TRACE_PTR(ps_get_arguments, walk_state); | |
428 | ||
429 | switch (op->common.aml_opcode) { | |
430 | case AML_BYTE_OP: /* AML_BYTEDATA_ARG */ | |
431 | case AML_WORD_OP: /* AML_WORDDATA_ARG */ | |
432 | case AML_DWORD_OP: /* AML_DWORDATA_ARG */ | |
433 | case AML_QWORD_OP: /* AML_QWORDATA_ARG */ | |
434 | case AML_STRING_OP: /* AML_ASCIICHARLIST_ARG */ | |
435 | ||
436 | /* Fill in constant or string argument directly */ | |
437 | ||
438 | acpi_ps_get_next_simple_arg(&(walk_state->parser_state), | |
439 | GET_CURRENT_ARG_TYPE(walk_state-> | |
440 | arg_types), | |
441 | op); | |
442 | break; | |
443 | ||
444 | case AML_INT_NAMEPATH_OP: /* AML_NAMESTRING_ARG */ | |
445 | ||
446 | status = | |
447 | acpi_ps_get_next_namepath(walk_state, | |
448 | &(walk_state->parser_state), op, | |
449 | 1); | |
450 | if (ACPI_FAILURE(status)) { | |
451 | return_ACPI_STATUS(status); | |
452 | } | |
453 | ||
454 | walk_state->arg_types = 0; | |
455 | break; | |
456 | ||
457 | default: | |
458 | /* | |
459 | * Op is not a constant or string, append each argument to the Op | |
460 | */ | |
461 | while (GET_CURRENT_ARG_TYPE(walk_state->arg_types) | |
462 | && !walk_state->arg_count) { | |
463 | walk_state->aml_offset = | |
464 | (u32) ACPI_PTR_DIFF(walk_state->parser_state.aml, | |
465 | walk_state->parser_state. | |
466 | aml_start); | |
467 | ||
468 | status = | |
469 | acpi_ps_get_next_arg(walk_state, | |
470 | &(walk_state->parser_state), | |
471 | GET_CURRENT_ARG_TYPE | |
472 | (walk_state->arg_types), &arg); | |
473 | if (ACPI_FAILURE(status)) { | |
474 | return_ACPI_STATUS(status); | |
475 | } | |
476 | ||
477 | if (arg) { | |
478 | arg->common.aml_offset = walk_state->aml_offset; | |
479 | acpi_ps_append_arg(op, arg); | |
480 | } | |
481 | ||
482 | INCREMENT_ARG_LIST(walk_state->arg_types); | |
483 | } | |
484 | ||
7f0c826a LM |
485 | /* |
486 | * Handle executable code at "module-level". This refers to | |
487 | * executable opcodes that appear outside of any control method. | |
488 | */ | |
489 | if ((walk_state->pass_number <= ACPI_IMODE_LOAD_PASS2) && | |
4d0b4af9 MK |
490 | ((walk_state->parse_flags & ACPI_PARSE_DISASSEMBLE) == 0)) { |
491 | /* | |
492 | * We want to skip If/Else/While constructs during Pass1 because we | |
493 | * want to actually conditionally execute the code during Pass2. | |
494 | * | |
495 | * Except for disassembly, where we always want to walk the | |
496 | * If/Else/While packages | |
497 | */ | |
498 | switch (op->common.aml_opcode) { | |
499 | case AML_IF_OP: | |
500 | case AML_ELSE_OP: | |
501 | case AML_WHILE_OP: | |
502 | ||
7f0c826a LM |
503 | /* |
504 | * Currently supported module-level opcodes are: | |
505 | * IF/ELSE/WHILE. These appear to be the most common, | |
506 | * and easiest to support since they open an AML | |
507 | * package. | |
508 | */ | |
509 | if (walk_state->pass_number == | |
510 | ACPI_IMODE_LOAD_PASS1) { | |
9a884ab6 LM |
511 | acpi_ps_link_module_code(op->common. |
512 | parent, | |
513 | aml_op_start, | |
514 | (u32) | |
515 | (walk_state-> | |
7f0c826a LM |
516 | parser_state. |
517 | pkg_end - | |
9a884ab6 | 518 | aml_op_start), |
7f0c826a LM |
519 | walk_state-> |
520 | owner_id); | |
521 | } | |
522 | ||
4d0b4af9 MK |
523 | ACPI_DEBUG_PRINT((ACPI_DB_PARSE, |
524 | "Pass1: Skipping an If/Else/While body\n")); | |
525 | ||
526 | /* Skip body of if/else/while in pass 1 */ | |
527 | ||
528 | walk_state->parser_state.aml = | |
529 | walk_state->parser_state.pkg_end; | |
530 | walk_state->arg_count = 0; | |
531 | break; | |
532 | ||
533 | default: | |
7f0c826a LM |
534 | /* |
535 | * Check for an unsupported executable opcode at module | |
536 | * level. We must be in PASS1, the parent must be a SCOPE, | |
537 | * The opcode class must be EXECUTE, and the opcode must | |
538 | * not be an argument to another opcode. | |
539 | */ | |
540 | if ((walk_state->pass_number == | |
541 | ACPI_IMODE_LOAD_PASS1) | |
542 | && (op->common.parent->common.aml_opcode == | |
543 | AML_SCOPE_OP)) { | |
544 | op_info = | |
545 | acpi_ps_get_opcode_info(op->common. | |
546 | aml_opcode); | |
547 | if ((op_info->class == | |
548 | AML_CLASS_EXECUTE) && (!arg)) { | |
549 | ACPI_WARNING((AE_INFO, | |
00eb3255 BM |
550 | "Unsupported module-level executable opcode " |
551 | "0x%.2X at table offset 0x%.4X", | |
552 | op->common. | |
553 | aml_opcode, | |
554 | (u32) | |
555 | (ACPI_PTR_DIFF | |
556 | (aml_op_start, | |
557 | walk_state-> | |
558 | parser_state. | |
559 | aml_start) + | |
560 | sizeof(struct | |
561 | acpi_table_header)))); | |
7f0c826a LM |
562 | } |
563 | } | |
4d0b4af9 MK |
564 | break; |
565 | } | |
566 | } | |
7f0c826a LM |
567 | |
568 | /* Special processing for certain opcodes */ | |
4d0b4af9 MK |
569 | |
570 | switch (op->common.aml_opcode) { | |
571 | case AML_METHOD_OP: | |
572 | /* | |
573 | * Skip parsing of control method because we don't have enough | |
574 | * info in the first pass to parse it correctly. | |
575 | * | |
576 | * Save the length and address of the body | |
577 | */ | |
578 | op->named.data = walk_state->parser_state.aml; | |
579 | op->named.length = (u32) | |
580 | (walk_state->parser_state.pkg_end - | |
581 | walk_state->parser_state.aml); | |
582 | ||
583 | /* Skip body of method */ | |
584 | ||
585 | walk_state->parser_state.aml = | |
586 | walk_state->parser_state.pkg_end; | |
587 | walk_state->arg_count = 0; | |
588 | break; | |
589 | ||
590 | case AML_BUFFER_OP: | |
591 | case AML_PACKAGE_OP: | |
592 | case AML_VAR_PACKAGE_OP: | |
593 | ||
594 | if ((op->common.parent) && | |
595 | (op->common.parent->common.aml_opcode == | |
596 | AML_NAME_OP) | |
597 | && (walk_state->pass_number <= | |
598 | ACPI_IMODE_LOAD_PASS2)) { | |
599 | /* | |
600 | * Skip parsing of Buffers and Packages because we don't have | |
601 | * enough info in the first pass to parse them correctly. | |
602 | */ | |
603 | op->named.data = aml_op_start; | |
604 | op->named.length = (u32) | |
605 | (walk_state->parser_state.pkg_end - | |
606 | aml_op_start); | |
607 | ||
608 | /* Skip body */ | |
609 | ||
610 | walk_state->parser_state.aml = | |
611 | walk_state->parser_state.pkg_end; | |
612 | walk_state->arg_count = 0; | |
613 | } | |
614 | break; | |
615 | ||
616 | case AML_WHILE_OP: | |
617 | ||
618 | if (walk_state->control_state) { | |
619 | walk_state->control_state->control.package_end = | |
620 | walk_state->parser_state.pkg_end; | |
621 | } | |
622 | break; | |
623 | ||
624 | default: | |
625 | ||
626 | /* No action for all other opcodes */ | |
627 | break; | |
628 | } | |
629 | ||
630 | break; | |
631 | } | |
632 | ||
633 | return_ACPI_STATUS(AE_OK); | |
634 | } | |
635 | ||
7f0c826a LM |
636 | /******************************************************************************* |
637 | * | |
638 | * FUNCTION: acpi_ps_link_module_code | |
639 | * | |
9a884ab6 LM |
640 | * PARAMETERS: parent_op - Parent parser op |
641 | * aml_start - Pointer to the AML | |
7f0c826a LM |
642 | * aml_length - Length of executable AML |
643 | * owner_id - owner_id of module level code | |
644 | * | |
645 | * RETURN: None. | |
646 | * | |
647 | * DESCRIPTION: Wrap the module-level code with a method object and link the | |
648 | * object to the global list. Note, the mutex field of the method | |
649 | * object is used to link multiple module-level code objects. | |
650 | * | |
651 | ******************************************************************************/ | |
652 | ||
653 | static void | |
9a884ab6 LM |
654 | acpi_ps_link_module_code(union acpi_parse_object *parent_op, |
655 | u8 *aml_start, u32 aml_length, acpi_owner_id owner_id) | |
7f0c826a LM |
656 | { |
657 | union acpi_operand_object *prev; | |
658 | union acpi_operand_object *next; | |
659 | union acpi_operand_object *method_obj; | |
9a884ab6 | 660 | struct acpi_namespace_node *parent_node; |
7f0c826a LM |
661 | |
662 | /* Get the tail of the list */ | |
663 | ||
664 | prev = next = acpi_gbl_module_code_list; | |
665 | while (next) { | |
666 | prev = next; | |
667 | next = next->method.mutex; | |
668 | } | |
669 | ||
670 | /* | |
671 | * Insert the module level code into the list. Merge it if it is | |
672 | * adjacent to the previous element. | |
673 | */ | |
674 | if (!prev || | |
675 | ((prev->method.aml_start + prev->method.aml_length) != aml_start)) { | |
676 | ||
677 | /* Create, initialize, and link a new temporary method object */ | |
678 | ||
679 | method_obj = acpi_ut_create_internal_object(ACPI_TYPE_METHOD); | |
680 | if (!method_obj) { | |
681 | return; | |
682 | } | |
683 | ||
9a884ab6 LM |
684 | if (parent_op->common.node) { |
685 | parent_node = parent_op->common.node; | |
686 | } else { | |
687 | parent_node = acpi_gbl_root_node; | |
688 | } | |
689 | ||
7f0c826a LM |
690 | method_obj->method.aml_start = aml_start; |
691 | method_obj->method.aml_length = aml_length; | |
692 | method_obj->method.owner_id = owner_id; | |
26294842 | 693 | method_obj->method.info_flags |= ACPI_METHOD_MODULE_LEVEL; |
7f0c826a | 694 | |
9a884ab6 LM |
695 | /* |
696 | * Save the parent node in next_object. This is cheating, but we | |
697 | * don't want to expand the method object. | |
698 | */ | |
699 | method_obj->method.next_object = | |
700 | ACPI_CAST_PTR(union acpi_operand_object, parent_node); | |
701 | ||
7f0c826a LM |
702 | if (!prev) { |
703 | acpi_gbl_module_code_list = method_obj; | |
704 | } else { | |
705 | prev->method.mutex = method_obj; | |
706 | } | |
707 | } else { | |
708 | prev->method.aml_length += aml_length; | |
709 | } | |
710 | } | |
711 | ||
4d0b4af9 MK |
712 | /******************************************************************************* |
713 | * | |
714 | * FUNCTION: acpi_ps_complete_op | |
715 | * | |
716 | * PARAMETERS: walk_state - Current state | |
ba494bee BM |
717 | * op - Returned Op |
718 | * status - Parse status before complete Op | |
4d0b4af9 MK |
719 | * |
720 | * RETURN: Status | |
721 | * | |
722 | * DESCRIPTION: Complete Op | |
723 | * | |
724 | ******************************************************************************/ | |
725 | ||
726 | static acpi_status | |
727 | acpi_ps_complete_op(struct acpi_walk_state *walk_state, | |
728 | union acpi_parse_object **op, acpi_status status) | |
729 | { | |
730 | acpi_status status2; | |
731 | ||
732 | ACPI_FUNCTION_TRACE_PTR(ps_complete_op, walk_state); | |
733 | ||
734 | /* | |
735 | * Finished one argument of the containing scope | |
736 | */ | |
737 | walk_state->parser_state.scope->parse_scope.arg_count--; | |
738 | ||
739 | /* Close this Op (will result in parse subtree deletion) */ | |
740 | ||
741 | status2 = acpi_ps_complete_this_op(walk_state, *op); | |
742 | if (ACPI_FAILURE(status2)) { | |
743 | return_ACPI_STATUS(status2); | |
744 | } | |
745 | ||
746 | *op = NULL; | |
747 | ||
748 | switch (status) { | |
749 | case AE_OK: | |
750 | break; | |
751 | ||
752 | case AE_CTRL_TRANSFER: | |
753 | ||
754 | /* We are about to transfer to a called method */ | |
755 | ||
756 | walk_state->prev_op = NULL; | |
757 | walk_state->prev_arg_types = walk_state->arg_types; | |
758 | return_ACPI_STATUS(status); | |
759 | ||
760 | case AE_CTRL_END: | |
761 | ||
762 | acpi_ps_pop_scope(&(walk_state->parser_state), op, | |
763 | &walk_state->arg_types, | |
764 | &walk_state->arg_count); | |
765 | ||
766 | if (*op) { | |
767 | walk_state->op = *op; | |
768 | walk_state->op_info = | |
769 | acpi_ps_get_opcode_info((*op)->common.aml_opcode); | |
770 | walk_state->opcode = (*op)->common.aml_opcode; | |
771 | ||
772 | status = walk_state->ascending_callback(walk_state); | |
773 | status = | |
774 | acpi_ps_next_parse_state(walk_state, *op, status); | |
775 | ||
776 | status2 = acpi_ps_complete_this_op(walk_state, *op); | |
777 | if (ACPI_FAILURE(status2)) { | |
778 | return_ACPI_STATUS(status2); | |
779 | } | |
780 | } | |
781 | ||
782 | status = AE_OK; | |
783 | break; | |
784 | ||
785 | case AE_CTRL_BREAK: | |
786 | case AE_CTRL_CONTINUE: | |
787 | ||
788 | /* Pop off scopes until we find the While */ | |
789 | ||
790 | while (!(*op) || ((*op)->common.aml_opcode != AML_WHILE_OP)) { | |
791 | acpi_ps_pop_scope(&(walk_state->parser_state), op, | |
792 | &walk_state->arg_types, | |
793 | &walk_state->arg_count); | |
4d0b4af9 MK |
794 | } |
795 | ||
796 | /* Close this iteration of the While loop */ | |
797 | ||
798 | walk_state->op = *op; | |
799 | walk_state->op_info = | |
800 | acpi_ps_get_opcode_info((*op)->common.aml_opcode); | |
801 | walk_state->opcode = (*op)->common.aml_opcode; | |
802 | ||
803 | status = walk_state->ascending_callback(walk_state); | |
804 | status = acpi_ps_next_parse_state(walk_state, *op, status); | |
805 | ||
806 | status2 = acpi_ps_complete_this_op(walk_state, *op); | |
807 | if (ACPI_FAILURE(status2)) { | |
808 | return_ACPI_STATUS(status2); | |
809 | } | |
810 | ||
811 | status = AE_OK; | |
812 | break; | |
813 | ||
814 | case AE_CTRL_TERMINATE: | |
815 | ||
816 | /* Clean up */ | |
817 | do { | |
818 | if (*op) { | |
819 | status2 = | |
820 | acpi_ps_complete_this_op(walk_state, *op); | |
821 | if (ACPI_FAILURE(status2)) { | |
822 | return_ACPI_STATUS(status2); | |
823 | } | |
4d0b4af9 MK |
824 | |
825 | acpi_ut_delete_generic_state | |
826 | (acpi_ut_pop_generic_state | |
827 | (&walk_state->control_state)); | |
828 | } | |
829 | ||
830 | acpi_ps_pop_scope(&(walk_state->parser_state), op, | |
831 | &walk_state->arg_types, | |
832 | &walk_state->arg_count); | |
833 | ||
834 | } while (*op); | |
835 | ||
836 | return_ACPI_STATUS(AE_OK); | |
837 | ||
838 | default: /* All other non-AE_OK status */ | |
839 | ||
840 | do { | |
841 | if (*op) { | |
842 | status2 = | |
843 | acpi_ps_complete_this_op(walk_state, *op); | |
844 | if (ACPI_FAILURE(status2)) { | |
845 | return_ACPI_STATUS(status2); | |
846 | } | |
847 | } | |
848 | ||
849 | acpi_ps_pop_scope(&(walk_state->parser_state), op, | |
850 | &walk_state->arg_types, | |
851 | &walk_state->arg_count); | |
852 | ||
853 | } while (*op); | |
854 | ||
855 | #if 0 | |
856 | /* | |
857 | * TBD: Cleanup parse ops on error | |
858 | */ | |
859 | if (*op == NULL) { | |
860 | acpi_ps_pop_scope(parser_state, op, | |
861 | &walk_state->arg_types, | |
862 | &walk_state->arg_count); | |
863 | } | |
864 | #endif | |
865 | walk_state->prev_op = NULL; | |
866 | walk_state->prev_arg_types = walk_state->arg_types; | |
867 | return_ACPI_STATUS(status); | |
868 | } | |
869 | ||
870 | /* This scope complete? */ | |
871 | ||
872 | if (acpi_ps_has_completed_scope(&(walk_state->parser_state))) { | |
873 | acpi_ps_pop_scope(&(walk_state->parser_state), op, | |
874 | &walk_state->arg_types, | |
875 | &walk_state->arg_count); | |
876 | ACPI_DEBUG_PRINT((ACPI_DB_PARSE, "Popped scope, Op=%p\n", *op)); | |
877 | } else { | |
878 | *op = NULL; | |
879 | } | |
880 | ||
881 | return_ACPI_STATUS(AE_OK); | |
882 | } | |
883 | ||
884 | /******************************************************************************* | |
885 | * | |
886 | * FUNCTION: acpi_ps_complete_final_op | |
887 | * | |
888 | * PARAMETERS: walk_state - Current state | |
ba494bee BM |
889 | * op - Current Op |
890 | * status - Current parse status before complete last | |
4d0b4af9 MK |
891 | * Op |
892 | * | |
893 | * RETURN: Status | |
894 | * | |
895 | * DESCRIPTION: Complete last Op. | |
896 | * | |
897 | ******************************************************************************/ | |
898 | ||
899 | static acpi_status | |
900 | acpi_ps_complete_final_op(struct acpi_walk_state *walk_state, | |
901 | union acpi_parse_object *op, acpi_status status) | |
902 | { | |
903 | acpi_status status2; | |
904 | ||
905 | ACPI_FUNCTION_TRACE_PTR(ps_complete_final_op, walk_state); | |
906 | ||
907 | /* | |
908 | * Complete the last Op (if not completed), and clear the scope stack. | |
909 | * It is easily possible to end an AML "package" with an unbounded number | |
910 | * of open scopes (such as when several ASL blocks are closed with | |
911 | * sequential closing braces). We want to terminate each one cleanly. | |
912 | */ | |
913 | ACPI_DEBUG_PRINT((ACPI_DB_PARSE, "AML package complete at Op %p\n", | |
914 | op)); | |
915 | do { | |
916 | if (op) { | |
917 | if (walk_state->ascending_callback != NULL) { | |
918 | walk_state->op = op; | |
919 | walk_state->op_info = | |
920 | acpi_ps_get_opcode_info(op->common. | |
921 | aml_opcode); | |
922 | walk_state->opcode = op->common.aml_opcode; | |
923 | ||
924 | status = | |
925 | walk_state->ascending_callback(walk_state); | |
926 | status = | |
927 | acpi_ps_next_parse_state(walk_state, op, | |
928 | status); | |
929 | if (status == AE_CTRL_PENDING) { | |
930 | status = | |
931 | acpi_ps_complete_op(walk_state, &op, | |
932 | AE_OK); | |
933 | if (ACPI_FAILURE(status)) { | |
934 | return_ACPI_STATUS(status); | |
935 | } | |
936 | } | |
937 | ||
938 | if (status == AE_CTRL_TERMINATE) { | |
939 | status = AE_OK; | |
940 | ||
941 | /* Clean up */ | |
942 | do { | |
943 | if (op) { | |
944 | status2 = | |
945 | acpi_ps_complete_this_op | |
946 | (walk_state, op); | |
947 | if (ACPI_FAILURE | |
948 | (status2)) { | |
949 | return_ACPI_STATUS | |
950 | (status2); | |
951 | } | |
952 | } | |
953 | ||
954 | acpi_ps_pop_scope(& | |
955 | (walk_state-> | |
956 | parser_state), | |
957 | &op, | |
958 | &walk_state-> | |
959 | arg_types, | |
960 | &walk_state-> | |
961 | arg_count); | |
962 | ||
963 | } while (op); | |
964 | ||
965 | return_ACPI_STATUS(status); | |
966 | } | |
967 | ||
968 | else if (ACPI_FAILURE(status)) { | |
969 | ||
970 | /* First error is most important */ | |
971 | ||
972 | (void) | |
973 | acpi_ps_complete_this_op(walk_state, | |
974 | op); | |
975 | return_ACPI_STATUS(status); | |
976 | } | |
977 | } | |
978 | ||
979 | status2 = acpi_ps_complete_this_op(walk_state, op); | |
980 | if (ACPI_FAILURE(status2)) { | |
981 | return_ACPI_STATUS(status2); | |
982 | } | |
983 | } | |
984 | ||
985 | acpi_ps_pop_scope(&(walk_state->parser_state), &op, | |
986 | &walk_state->arg_types, | |
987 | &walk_state->arg_count); | |
988 | ||
989 | } while (op); | |
990 | ||
991 | return_ACPI_STATUS(status); | |
992 | } | |
993 | ||
73459f73 RM |
994 | /******************************************************************************* |
995 | * | |
996 | * FUNCTION: acpi_ps_parse_loop | |
997 | * | |
998 | * PARAMETERS: walk_state - Current state | |
999 | * | |
1000 | * RETURN: Status | |
1001 | * | |
1002 | * DESCRIPTION: Parse AML (pointed to by the current parser state) and return | |
1003 | * a tree of ops. | |
1004 | * | |
1005 | ******************************************************************************/ | |
1006 | ||
4be44fcd | 1007 | acpi_status acpi_ps_parse_loop(struct acpi_walk_state *walk_state) |
73459f73 | 1008 | { |
4be44fcd | 1009 | acpi_status status = AE_OK; |
4be44fcd | 1010 | union acpi_parse_object *op = NULL; /* current op */ |
4be44fcd LB |
1011 | struct acpi_parse_state *parser_state; |
1012 | u8 *aml_op_start = NULL; | |
73459f73 | 1013 | |
b229cf92 | 1014 | ACPI_FUNCTION_TRACE_PTR(ps_parse_loop, walk_state); |
73459f73 RM |
1015 | |
1016 | if (walk_state->descending_callback == NULL) { | |
4be44fcd | 1017 | return_ACPI_STATUS(AE_BAD_PARAMETER); |
73459f73 RM |
1018 | } |
1019 | ||
1020 | parser_state = &walk_state->parser_state; | |
1021 | walk_state->arg_types = 0; | |
1022 | ||
1023 | #if (!defined (ACPI_NO_METHOD_EXECUTION) && !defined (ACPI_CONSTANT_EVAL_ONLY)) | |
1024 | ||
1025 | if (walk_state->walk_type & ACPI_WALK_METHOD_RESTART) { | |
52fc0b02 | 1026 | |
73459f73 RM |
1027 | /* We are restarting a preempted control method */ |
1028 | ||
4be44fcd | 1029 | if (acpi_ps_has_completed_scope(parser_state)) { |
73459f73 RM |
1030 | /* |
1031 | * We must check if a predicate to an IF or WHILE statement | |
1032 | * was just completed | |
1033 | */ | |
1034 | if ((parser_state->scope->parse_scope.op) && | |
4be44fcd LB |
1035 | ((parser_state->scope->parse_scope.op->common. |
1036 | aml_opcode == AML_IF_OP) | |
1037 | || (parser_state->scope->parse_scope.op->common. | |
1038 | aml_opcode == AML_WHILE_OP)) | |
1039 | && (walk_state->control_state) | |
1040 | && (walk_state->control_state->common.state == | |
1041 | ACPI_CONTROL_PREDICATE_EXECUTING)) { | |
73459f73 RM |
1042 | /* |
1043 | * A predicate was just completed, get the value of the | |
1044 | * predicate and branch based on that value | |
1045 | */ | |
1046 | walk_state->op = NULL; | |
4be44fcd LB |
1047 | status = |
1048 | acpi_ds_get_predicate_value(walk_state, | |
1049 | ACPI_TO_POINTER | |
1050 | (TRUE)); | |
1051 | if (ACPI_FAILURE(status) | |
1052 | && ((status & AE_CODE_MASK) != | |
1053 | AE_CODE_CONTROL)) { | |
73459f73 | 1054 | if (status == AE_AML_NO_RETURN_VALUE) { |
b8e4d893 BM |
1055 | ACPI_EXCEPTION((AE_INFO, status, |
1056 | "Invoked method did not return a value")); | |
73459f73 | 1057 | } |
4d0b4af9 | 1058 | |
b8e4d893 | 1059 | ACPI_EXCEPTION((AE_INFO, status, |
b229cf92 | 1060 | "GetPredicate Failed")); |
4be44fcd | 1061 | return_ACPI_STATUS(status); |
73459f73 RM |
1062 | } |
1063 | ||
4be44fcd LB |
1064 | status = |
1065 | acpi_ps_next_parse_state(walk_state, op, | |
1066 | status); | |
73459f73 RM |
1067 | } |
1068 | ||
4be44fcd LB |
1069 | acpi_ps_pop_scope(parser_state, &op, |
1070 | &walk_state->arg_types, | |
1071 | &walk_state->arg_count); | |
1072 | ACPI_DEBUG_PRINT((ACPI_DB_PARSE, | |
1073 | "Popped scope, Op=%p\n", op)); | |
1074 | } else if (walk_state->prev_op) { | |
52fc0b02 | 1075 | |
73459f73 RM |
1076 | /* We were in the middle of an op */ |
1077 | ||
4d0b4af9 MK |
1078 | op = walk_state->prev_op; |
1079 | walk_state->arg_types = walk_state->prev_arg_types; | |
1080 | } | |
1081 | } | |
1082 | #endif | |
73459f73 | 1083 | |
4d0b4af9 | 1084 | /* Iterative parsing loop, while there is more AML to process: */ |
73459f73 | 1085 | |
4d0b4af9 MK |
1086 | while ((parser_state->aml < parser_state->aml_end) || (op)) { |
1087 | aml_op_start = parser_state->aml; | |
1088 | if (!op) { | |
1089 | status = | |
1090 | acpi_ps_create_op(walk_state, aml_op_start, &op); | |
1091 | if (ACPI_FAILURE(status)) { | |
1092 | if (status == AE_CTRL_PARSE_CONTINUE) { | |
73459f73 RM |
1093 | continue; |
1094 | } | |
1095 | ||
4d0b4af9 | 1096 | if (status == AE_CTRL_PARSE_PENDING) { |
73459f73 | 1097 | status = AE_OK; |
73459f73 RM |
1098 | } |
1099 | ||
4d0b4af9 MK |
1100 | status = |
1101 | acpi_ps_complete_op(walk_state, &op, | |
1102 | status); | |
4be44fcd | 1103 | if (ACPI_FAILURE(status)) { |
4d0b4af9 | 1104 | return_ACPI_STATUS(status); |
73459f73 RM |
1105 | } |
1106 | ||
4d0b4af9 | 1107 | continue; |
73459f73 RM |
1108 | } |
1109 | ||
1110 | op->common.aml_offset = walk_state->aml_offset; | |
1111 | ||
1112 | if (walk_state->op_info) { | |
4be44fcd | 1113 | ACPI_DEBUG_PRINT((ACPI_DB_PARSE, |
b229cf92 | 1114 | "Opcode %4.4X [%s] Op %p Aml %p AmlOffset %5.5X\n", |
4be44fcd LB |
1115 | (u32) op->common.aml_opcode, |
1116 | walk_state->op_info->name, op, | |
1117 | parser_state->aml, | |
1118 | op->common.aml_offset)); | |
73459f73 RM |
1119 | } |
1120 | } | |
1121 | ||
73459f73 RM |
1122 | /* |
1123 | * Start arg_count at zero because we don't know if there are | |
1124 | * any args yet | |
1125 | */ | |
1126 | walk_state->arg_count = 0; | |
1127 | ||
1128 | /* Are there any arguments that must be processed? */ | |
1129 | ||
1130 | if (walk_state->arg_types) { | |
52fc0b02 | 1131 | |
73459f73 RM |
1132 | /* Get arguments */ |
1133 | ||
4d0b4af9 MK |
1134 | status = |
1135 | acpi_ps_get_arguments(walk_state, aml_op_start, op); | |
1136 | if (ACPI_FAILURE(status)) { | |
4be44fcd | 1137 | status = |
4d0b4af9 MK |
1138 | acpi_ps_complete_op(walk_state, &op, |
1139 | status); | |
4be44fcd | 1140 | if (ACPI_FAILURE(status)) { |
4d0b4af9 | 1141 | return_ACPI_STATUS(status); |
73459f73 | 1142 | } |
73459f73 | 1143 | |
4d0b4af9 | 1144 | continue; |
73459f73 RM |
1145 | } |
1146 | } | |
1147 | ||
1148 | /* Check for arguments that need to be processed */ | |
1149 | ||
1150 | if (walk_state->arg_count) { | |
1151 | /* | |
1152 | * There are arguments (complex ones), push Op and | |
1153 | * prepare for argument | |
1154 | */ | |
4be44fcd LB |
1155 | status = acpi_ps_push_scope(parser_state, op, |
1156 | walk_state->arg_types, | |
1157 | walk_state->arg_count); | |
1158 | if (ACPI_FAILURE(status)) { | |
4d0b4af9 MK |
1159 | status = |
1160 | acpi_ps_complete_op(walk_state, &op, | |
1161 | status); | |
1162 | if (ACPI_FAILURE(status)) { | |
1163 | return_ACPI_STATUS(status); | |
1164 | } | |
1165 | ||
1166 | continue; | |
73459f73 | 1167 | } |
4d0b4af9 | 1168 | |
73459f73 RM |
1169 | op = NULL; |
1170 | continue; | |
1171 | } | |
1172 | ||
1173 | /* | |
1174 | * All arguments have been processed -- Op is complete, | |
1175 | * prepare for next | |
1176 | */ | |
4be44fcd LB |
1177 | walk_state->op_info = |
1178 | acpi_ps_get_opcode_info(op->common.aml_opcode); | |
73459f73 RM |
1179 | if (walk_state->op_info->flags & AML_NAMED) { |
1180 | if (acpi_gbl_depth) { | |
1181 | acpi_gbl_depth--; | |
1182 | } | |
1183 | ||
941f48bb LM |
1184 | if (op->common.aml_opcode == AML_REGION_OP || |
1185 | op->common.aml_opcode == AML_DATA_REGION_OP) { | |
73459f73 RM |
1186 | /* |
1187 | * Skip parsing of control method or opregion body, | |
1188 | * because we don't have enough info in the first pass | |
1189 | * to parse them correctly. | |
1190 | * | |
1191 | * Completed parsing an op_region declaration, we now | |
1192 | * know the length. | |
1193 | */ | |
4be44fcd LB |
1194 | op->named.length = |
1195 | (u32) (parser_state->aml - op->named.data); | |
73459f73 RM |
1196 | } |
1197 | } | |
1198 | ||
1199 | if (walk_state->op_info->flags & AML_CREATE) { | |
1200 | /* | |
ba494bee | 1201 | * Backup to beginning of create_XXXfield declaration (1 for |
73459f73 RM |
1202 | * Opcode) |
1203 | * | |
1204 | * body_length is unknown until we parse the body | |
1205 | */ | |
4be44fcd LB |
1206 | op->named.length = |
1207 | (u32) (parser_state->aml - op->named.data); | |
73459f73 RM |
1208 | } |
1209 | ||
ef805d95 LM |
1210 | if (op->common.aml_opcode == AML_BANK_FIELD_OP) { |
1211 | /* | |
1212 | * Backup to beginning of bank_field declaration | |
1213 | * | |
1214 | * body_length is unknown until we parse the body | |
1215 | */ | |
1216 | op->named.length = | |
1217 | (u32) (parser_state->aml - op->named.data); | |
1218 | } | |
1219 | ||
73459f73 RM |
1220 | /* This op complete, notify the dispatcher */ |
1221 | ||
1222 | if (walk_state->ascending_callback != NULL) { | |
4be44fcd | 1223 | walk_state->op = op; |
73459f73 RM |
1224 | walk_state->opcode = op->common.aml_opcode; |
1225 | ||
4be44fcd LB |
1226 | status = walk_state->ascending_callback(walk_state); |
1227 | status = | |
1228 | acpi_ps_next_parse_state(walk_state, op, status); | |
73459f73 RM |
1229 | if (status == AE_CTRL_PENDING) { |
1230 | status = AE_OK; | |
73459f73 RM |
1231 | } |
1232 | } | |
1233 | ||
4d0b4af9 MK |
1234 | status = acpi_ps_complete_op(walk_state, &op, status); |
1235 | if (ACPI_FAILURE(status)) { | |
4be44fcd | 1236 | return_ACPI_STATUS(status); |
73459f73 RM |
1237 | } |
1238 | ||
4be44fcd | 1239 | } /* while parser_state->Aml */ |
73459f73 | 1240 | |
4d0b4af9 | 1241 | status = acpi_ps_complete_final_op(walk_state, op, status); |
4be44fcd | 1242 | return_ACPI_STATUS(status); |
73459f73 | 1243 | } |