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1da177e4 LT |
1 | /****************************************************************************** |
2 | * | |
3 | * Module Name: dsobject - Dispatcher object management routines | |
4 | * | |
5 | *****************************************************************************/ | |
6 | ||
7 | /* | |
8 | * Copyright (C) 2000 - 2005, R. Byron Moore | |
9 | * All rights reserved. | |
10 | * | |
11 | * Redistribution and use in source and binary forms, with or without | |
12 | * modification, are permitted provided that the following conditions | |
13 | * are met: | |
14 | * 1. Redistributions of source code must retain the above copyright | |
15 | * notice, this list of conditions, and the following disclaimer, | |
16 | * without modification. | |
17 | * 2. Redistributions in binary form must reproduce at minimum a disclaimer | |
18 | * substantially similar to the "NO WARRANTY" disclaimer below | |
19 | * ("Disclaimer") and any redistribution must be conditioned upon | |
20 | * including a substantially similar Disclaimer requirement for further | |
21 | * binary redistribution. | |
22 | * 3. Neither the names of the above-listed copyright holders nor the names | |
23 | * of any contributors may be used to endorse or promote products derived | |
24 | * from this software without specific prior written permission. | |
25 | * | |
26 | * Alternatively, this software may be distributed under the terms of the | |
27 | * GNU General Public License ("GPL") version 2 as published by the Free | |
28 | * Software Foundation. | |
29 | * | |
30 | * NO WARRANTY | |
31 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS | |
32 | * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT | |
33 | * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR | |
34 | * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT | |
35 | * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL | |
36 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS | |
37 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | |
38 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, | |
39 | * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING | |
40 | * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE | |
41 | * POSSIBILITY OF SUCH DAMAGES. | |
42 | */ | |
43 | ||
44 | ||
45 | #include <acpi/acpi.h> | |
46 | #include <acpi/acparser.h> | |
47 | #include <acpi/amlcode.h> | |
48 | #include <acpi/acdispat.h> | |
49 | #include <acpi/acnamesp.h> | |
50 | #include <acpi/acinterp.h> | |
51 | ||
52 | #define _COMPONENT ACPI_DISPATCHER | |
53 | ACPI_MODULE_NAME ("dsobject") | |
54 | ||
44f6c012 RM |
55 | static acpi_status |
56 | acpi_ds_build_internal_object ( | |
57 | struct acpi_walk_state *walk_state, | |
58 | union acpi_parse_object *op, | |
59 | union acpi_operand_object **obj_desc_ptr); | |
60 | ||
1da177e4 LT |
61 | |
62 | #ifndef ACPI_NO_METHOD_EXECUTION | |
44f6c012 | 63 | /******************************************************************************* |
1da177e4 LT |
64 | * |
65 | * FUNCTION: acpi_ds_build_internal_object | |
66 | * | |
67 | * PARAMETERS: walk_state - Current walk state | |
68 | * Op - Parser object to be translated | |
69 | * obj_desc_ptr - Where the ACPI internal object is returned | |
70 | * | |
71 | * RETURN: Status | |
72 | * | |
73 | * DESCRIPTION: Translate a parser Op object to the equivalent namespace object | |
74 | * Simple objects are any objects other than a package object! | |
75 | * | |
44f6c012 | 76 | ******************************************************************************/ |
1da177e4 | 77 | |
44f6c012 | 78 | static acpi_status |
1da177e4 LT |
79 | acpi_ds_build_internal_object ( |
80 | struct acpi_walk_state *walk_state, | |
81 | union acpi_parse_object *op, | |
82 | union acpi_operand_object **obj_desc_ptr) | |
83 | { | |
84 | union acpi_operand_object *obj_desc; | |
85 | acpi_status status; | |
86 | ||
87 | ||
88 | ACPI_FUNCTION_TRACE ("ds_build_internal_object"); | |
89 | ||
90 | ||
91 | *obj_desc_ptr = NULL; | |
92 | if (op->common.aml_opcode == AML_INT_NAMEPATH_OP) { | |
93 | /* | |
94 | * This is an named object reference. If this name was | |
95 | * previously looked up in the namespace, it was stored in this op. | |
96 | * Otherwise, go ahead and look it up now | |
97 | */ | |
98 | if (!op->common.node) { | |
44f6c012 RM |
99 | status = acpi_ns_lookup (walk_state->scope_info, |
100 | op->common.value.string, | |
1da177e4 | 101 | ACPI_TYPE_ANY, ACPI_IMODE_EXECUTE, |
44f6c012 RM |
102 | ACPI_NS_SEARCH_PARENT | ACPI_NS_DONT_OPEN_SCOPE, |
103 | NULL, | |
1da177e4 LT |
104 | (struct acpi_namespace_node **) &(op->common.node)); |
105 | ||
106 | if (ACPI_FAILURE (status)) { | |
107 | ACPI_REPORT_NSERROR (op->common.value.string, status); | |
108 | return_ACPI_STATUS (status); | |
109 | } | |
110 | } | |
111 | } | |
112 | ||
113 | /* Create and init the internal ACPI object */ | |
114 | ||
44f6c012 RM |
115 | obj_desc = acpi_ut_create_internal_object ( |
116 | (acpi_ps_get_opcode_info (op->common.aml_opcode))->object_type); | |
1da177e4 LT |
117 | if (!obj_desc) { |
118 | return_ACPI_STATUS (AE_NO_MEMORY); | |
119 | } | |
120 | ||
44f6c012 RM |
121 | status = acpi_ds_init_object_from_op (walk_state, op, op->common.aml_opcode, |
122 | &obj_desc); | |
1da177e4 LT |
123 | if (ACPI_FAILURE (status)) { |
124 | acpi_ut_remove_reference (obj_desc); | |
125 | return_ACPI_STATUS (status); | |
126 | } | |
127 | ||
128 | *obj_desc_ptr = obj_desc; | |
129 | return_ACPI_STATUS (AE_OK); | |
130 | } | |
131 | ||
132 | ||
44f6c012 | 133 | /******************************************************************************* |
1da177e4 LT |
134 | * |
135 | * FUNCTION: acpi_ds_build_internal_buffer_obj | |
136 | * | |
137 | * PARAMETERS: walk_state - Current walk state | |
138 | * Op - Parser object to be translated | |
139 | * buffer_length - Length of the buffer | |
140 | * obj_desc_ptr - Where the ACPI internal object is returned | |
141 | * | |
142 | * RETURN: Status | |
143 | * | |
144 | * DESCRIPTION: Translate a parser Op package object to the equivalent | |
145 | * namespace object | |
146 | * | |
44f6c012 | 147 | ******************************************************************************/ |
1da177e4 LT |
148 | |
149 | acpi_status | |
150 | acpi_ds_build_internal_buffer_obj ( | |
151 | struct acpi_walk_state *walk_state, | |
152 | union acpi_parse_object *op, | |
153 | u32 buffer_length, | |
154 | union acpi_operand_object **obj_desc_ptr) | |
155 | { | |
156 | union acpi_parse_object *arg; | |
157 | union acpi_operand_object *obj_desc; | |
158 | union acpi_parse_object *byte_list; | |
159 | u32 byte_list_length = 0; | |
160 | ||
161 | ||
162 | ACPI_FUNCTION_TRACE ("ds_build_internal_buffer_obj"); | |
163 | ||
164 | ||
165 | obj_desc = *obj_desc_ptr; | |
166 | if (obj_desc) { | |
167 | /* | |
168 | * We are evaluating a Named buffer object "Name (xxxx, Buffer)". | |
169 | * The buffer object already exists (from the NS node) | |
170 | */ | |
171 | } | |
172 | else { | |
173 | /* Create a new buffer object */ | |
174 | ||
175 | obj_desc = acpi_ut_create_internal_object (ACPI_TYPE_BUFFER); | |
176 | *obj_desc_ptr = obj_desc; | |
177 | if (!obj_desc) { | |
178 | return_ACPI_STATUS (AE_NO_MEMORY); | |
179 | } | |
180 | } | |
181 | ||
182 | /* | |
183 | * Second arg is the buffer data (optional) byte_list can be either | |
184 | * individual bytes or a string initializer. In either case, a | |
185 | * byte_list appears in the AML. | |
186 | */ | |
187 | arg = op->common.value.arg; /* skip first arg */ | |
188 | ||
189 | byte_list = arg->named.next; | |
190 | if (byte_list) { | |
191 | if (byte_list->common.aml_opcode != AML_INT_BYTELIST_OP) { | |
192 | ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, | |
193 | "Expecting bytelist, got AML opcode %X in op %p\n", | |
194 | byte_list->common.aml_opcode, byte_list)); | |
195 | ||
196 | acpi_ut_remove_reference (obj_desc); | |
197 | return (AE_TYPE); | |
198 | } | |
199 | ||
200 | byte_list_length = (u32) byte_list->common.value.integer; | |
201 | } | |
202 | ||
203 | /* | |
204 | * The buffer length (number of bytes) will be the larger of: | |
205 | * 1) The specified buffer length and | |
206 | * 2) The length of the initializer byte list | |
207 | */ | |
208 | obj_desc->buffer.length = buffer_length; | |
209 | if (byte_list_length > buffer_length) { | |
210 | obj_desc->buffer.length = byte_list_length; | |
211 | } | |
212 | ||
213 | /* Allocate the buffer */ | |
214 | ||
215 | if (obj_desc->buffer.length == 0) { | |
216 | obj_desc->buffer.pointer = NULL; | |
217 | ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, | |
218 | "Buffer defined with zero length in AML, creating\n")); | |
219 | } | |
220 | else { | |
221 | obj_desc->buffer.pointer = ACPI_MEM_CALLOCATE ( | |
222 | obj_desc->buffer.length); | |
223 | if (!obj_desc->buffer.pointer) { | |
224 | acpi_ut_delete_object_desc (obj_desc); | |
225 | return_ACPI_STATUS (AE_NO_MEMORY); | |
226 | } | |
227 | ||
228 | /* Initialize buffer from the byte_list (if present) */ | |
229 | ||
230 | if (byte_list) { | |
231 | ACPI_MEMCPY (obj_desc->buffer.pointer, byte_list->named.data, | |
232 | byte_list_length); | |
233 | } | |
234 | } | |
235 | ||
236 | obj_desc->buffer.flags |= AOPOBJ_DATA_VALID; | |
237 | op->common.node = (struct acpi_namespace_node *) obj_desc; | |
238 | return_ACPI_STATUS (AE_OK); | |
239 | } | |
240 | ||
241 | ||
44f6c012 | 242 | /******************************************************************************* |
1da177e4 LT |
243 | * |
244 | * FUNCTION: acpi_ds_build_internal_package_obj | |
245 | * | |
246 | * PARAMETERS: walk_state - Current walk state | |
247 | * Op - Parser object to be translated | |
248 | * package_length - Number of elements in the package | |
249 | * obj_desc_ptr - Where the ACPI internal object is returned | |
250 | * | |
251 | * RETURN: Status | |
252 | * | |
253 | * DESCRIPTION: Translate a parser Op package object to the equivalent | |
254 | * namespace object | |
255 | * | |
44f6c012 | 256 | ******************************************************************************/ |
1da177e4 LT |
257 | |
258 | acpi_status | |
259 | acpi_ds_build_internal_package_obj ( | |
260 | struct acpi_walk_state *walk_state, | |
261 | union acpi_parse_object *op, | |
262 | u32 package_length, | |
263 | union acpi_operand_object **obj_desc_ptr) | |
264 | { | |
265 | union acpi_parse_object *arg; | |
266 | union acpi_parse_object *parent; | |
267 | union acpi_operand_object *obj_desc = NULL; | |
268 | u32 package_list_length; | |
269 | acpi_status status = AE_OK; | |
270 | u32 i; | |
271 | ||
272 | ||
273 | ACPI_FUNCTION_TRACE ("ds_build_internal_package_obj"); | |
274 | ||
275 | ||
276 | /* Find the parent of a possibly nested package */ | |
277 | ||
278 | parent = op->common.parent; | |
279 | while ((parent->common.aml_opcode == AML_PACKAGE_OP) || | |
280 | (parent->common.aml_opcode == AML_VAR_PACKAGE_OP)) { | |
281 | parent = parent->common.parent; | |
282 | } | |
283 | ||
284 | obj_desc = *obj_desc_ptr; | |
285 | if (obj_desc) { | |
286 | /* | |
287 | * We are evaluating a Named package object "Name (xxxx, Package)". | |
288 | * Get the existing package object from the NS node | |
289 | */ | |
290 | } | |
291 | else { | |
292 | obj_desc = acpi_ut_create_internal_object (ACPI_TYPE_PACKAGE); | |
293 | *obj_desc_ptr = obj_desc; | |
294 | if (!obj_desc) { | |
295 | return_ACPI_STATUS (AE_NO_MEMORY); | |
296 | } | |
297 | ||
298 | obj_desc->package.node = parent->common.node; | |
299 | } | |
300 | ||
301 | obj_desc->package.count = package_length; | |
302 | ||
303 | /* Count the number of items in the package list */ | |
304 | ||
305 | package_list_length = 0; | |
306 | arg = op->common.value.arg; | |
307 | arg = arg->common.next; | |
308 | while (arg) { | |
309 | package_list_length++; | |
310 | arg = arg->common.next; | |
311 | } | |
312 | ||
313 | /* | |
314 | * The package length (number of elements) will be the greater | |
315 | * of the specified length and the length of the initializer list | |
316 | */ | |
317 | if (package_list_length > package_length) { | |
318 | obj_desc->package.count = package_list_length; | |
319 | } | |
320 | ||
321 | /* | |
322 | * Allocate the pointer array (array of pointers to the | |
323 | * individual objects). Add an extra pointer slot so | |
324 | * that the list is always null terminated. | |
325 | */ | |
326 | obj_desc->package.elements = ACPI_MEM_CALLOCATE ( | |
327 | ((acpi_size) obj_desc->package.count + 1) * sizeof (void *)); | |
328 | ||
329 | if (!obj_desc->package.elements) { | |
330 | acpi_ut_delete_object_desc (obj_desc); | |
331 | return_ACPI_STATUS (AE_NO_MEMORY); | |
332 | } | |
333 | ||
334 | /* | |
335 | * Now init the elements of the package | |
336 | */ | |
337 | i = 0; | |
338 | arg = op->common.value.arg; | |
339 | arg = arg->common.next; | |
340 | while (arg) { | |
341 | if (arg->common.aml_opcode == AML_INT_RETURN_VALUE_OP) { | |
342 | /* Object (package or buffer) is already built */ | |
343 | ||
44f6c012 RM |
344 | obj_desc->package.elements[i] = |
345 | ACPI_CAST_PTR (union acpi_operand_object, arg->common.node); | |
1da177e4 LT |
346 | } |
347 | else { | |
348 | status = acpi_ds_build_internal_object (walk_state, arg, | |
44f6c012 | 349 | &obj_desc->package.elements[i]); |
1da177e4 LT |
350 | } |
351 | ||
352 | i++; | |
353 | arg = arg->common.next; | |
354 | } | |
355 | ||
356 | obj_desc->package.flags |= AOPOBJ_DATA_VALID; | |
357 | op->common.node = (struct acpi_namespace_node *) obj_desc; | |
358 | return_ACPI_STATUS (status); | |
359 | } | |
360 | ||
361 | ||
44f6c012 | 362 | /******************************************************************************* |
1da177e4 LT |
363 | * |
364 | * FUNCTION: acpi_ds_create_node | |
365 | * | |
366 | * PARAMETERS: walk_state - Current walk state | |
367 | * Node - NS Node to be initialized | |
368 | * Op - Parser object to be translated | |
369 | * | |
370 | * RETURN: Status | |
371 | * | |
372 | * DESCRIPTION: Create the object to be associated with a namespace node | |
373 | * | |
44f6c012 | 374 | ******************************************************************************/ |
1da177e4 LT |
375 | |
376 | acpi_status | |
377 | acpi_ds_create_node ( | |
378 | struct acpi_walk_state *walk_state, | |
379 | struct acpi_namespace_node *node, | |
380 | union acpi_parse_object *op) | |
381 | { | |
382 | acpi_status status; | |
383 | union acpi_operand_object *obj_desc; | |
384 | ||
385 | ||
386 | ACPI_FUNCTION_TRACE_PTR ("ds_create_node", op); | |
387 | ||
388 | ||
389 | /* | |
390 | * Because of the execution pass through the non-control-method | |
391 | * parts of the table, we can arrive here twice. Only init | |
392 | * the named object node the first time through | |
393 | */ | |
394 | if (acpi_ns_get_attached_object (node)) { | |
395 | return_ACPI_STATUS (AE_OK); | |
396 | } | |
397 | ||
398 | if (!op->common.value.arg) { | |
399 | /* No arguments, there is nothing to do */ | |
400 | ||
401 | return_ACPI_STATUS (AE_OK); | |
402 | } | |
403 | ||
404 | /* Build an internal object for the argument(s) */ | |
405 | ||
44f6c012 RM |
406 | status = acpi_ds_build_internal_object (walk_state, op->common.value.arg, |
407 | &obj_desc); | |
1da177e4 LT |
408 | if (ACPI_FAILURE (status)) { |
409 | return_ACPI_STATUS (status); | |
410 | } | |
411 | ||
412 | /* Re-type the object according to its argument */ | |
413 | ||
414 | node->type = ACPI_GET_OBJECT_TYPE (obj_desc); | |
415 | ||
416 | /* Attach obj to node */ | |
417 | ||
418 | status = acpi_ns_attach_object (node, obj_desc, node->type); | |
419 | ||
420 | /* Remove local reference to the object */ | |
421 | ||
422 | acpi_ut_remove_reference (obj_desc); | |
423 | return_ACPI_STATUS (status); | |
424 | } | |
425 | ||
426 | #endif /* ACPI_NO_METHOD_EXECUTION */ | |
427 | ||
428 | ||
44f6c012 | 429 | /******************************************************************************* |
1da177e4 LT |
430 | * |
431 | * FUNCTION: acpi_ds_init_object_from_op | |
432 | * | |
433 | * PARAMETERS: walk_state - Current walk state | |
434 | * Op - Parser op used to init the internal object | |
435 | * Opcode - AML opcode associated with the object | |
436 | * ret_obj_desc - Namespace object to be initialized | |
437 | * | |
438 | * RETURN: Status | |
439 | * | |
440 | * DESCRIPTION: Initialize a namespace object from a parser Op and its | |
441 | * associated arguments. The namespace object is a more compact | |
442 | * representation of the Op and its arguments. | |
443 | * | |
44f6c012 | 444 | ******************************************************************************/ |
1da177e4 LT |
445 | |
446 | acpi_status | |
447 | acpi_ds_init_object_from_op ( | |
448 | struct acpi_walk_state *walk_state, | |
449 | union acpi_parse_object *op, | |
450 | u16 opcode, | |
451 | union acpi_operand_object **ret_obj_desc) | |
452 | { | |
453 | const struct acpi_opcode_info *op_info; | |
454 | union acpi_operand_object *obj_desc; | |
455 | acpi_status status = AE_OK; | |
456 | ||
457 | ||
458 | ACPI_FUNCTION_TRACE ("ds_init_object_from_op"); | |
459 | ||
460 | ||
461 | obj_desc = *ret_obj_desc; | |
462 | op_info = acpi_ps_get_opcode_info (opcode); | |
463 | if (op_info->class == AML_CLASS_UNKNOWN) { | |
464 | /* Unknown opcode */ | |
465 | ||
466 | return_ACPI_STATUS (AE_TYPE); | |
467 | } | |
468 | ||
469 | /* Perform per-object initialization */ | |
470 | ||
471 | switch (ACPI_GET_OBJECT_TYPE (obj_desc)) { | |
472 | case ACPI_TYPE_BUFFER: | |
473 | ||
474 | /* | |
475 | * Defer evaluation of Buffer term_arg operand | |
476 | */ | |
44f6c012 RM |
477 | obj_desc->buffer.node = (struct acpi_namespace_node *) |
478 | walk_state->operands[0]; | |
1da177e4 LT |
479 | obj_desc->buffer.aml_start = op->named.data; |
480 | obj_desc->buffer.aml_length = op->named.length; | |
481 | break; | |
482 | ||
483 | ||
484 | case ACPI_TYPE_PACKAGE: | |
485 | ||
486 | /* | |
487 | * Defer evaluation of Package term_arg operand | |
488 | */ | |
44f6c012 RM |
489 | obj_desc->package.node = (struct acpi_namespace_node *) |
490 | walk_state->operands[0]; | |
1da177e4 LT |
491 | obj_desc->package.aml_start = op->named.data; |
492 | obj_desc->package.aml_length = op->named.length; | |
493 | break; | |
494 | ||
495 | ||
496 | case ACPI_TYPE_INTEGER: | |
497 | ||
498 | switch (op_info->type) { | |
499 | case AML_TYPE_CONSTANT: | |
500 | /* | |
501 | * Resolve AML Constants here - AND ONLY HERE! | |
502 | * All constants are integers. | |
44f6c012 RM |
503 | * We mark the integer with a flag that indicates that it started |
504 | * life as a constant -- so that stores to constants will perform | |
505 | * as expected (noop). zero_op is used as a placeholder for optional | |
506 | * target operands. | |
1da177e4 LT |
507 | */ |
508 | obj_desc->common.flags = AOPOBJ_AML_CONSTANT; | |
509 | ||
510 | switch (opcode) { | |
511 | case AML_ZERO_OP: | |
512 | ||
513 | obj_desc->integer.value = 0; | |
514 | break; | |
515 | ||
516 | case AML_ONE_OP: | |
517 | ||
518 | obj_desc->integer.value = 1; | |
519 | break; | |
520 | ||
521 | case AML_ONES_OP: | |
522 | ||
523 | obj_desc->integer.value = ACPI_INTEGER_MAX; | |
524 | ||
525 | /* Truncate value if we are executing from a 32-bit ACPI table */ | |
526 | ||
527 | #ifndef ACPI_NO_METHOD_EXECUTION | |
528 | acpi_ex_truncate_for32bit_table (obj_desc); | |
529 | #endif | |
530 | break; | |
531 | ||
532 | case AML_REVISION_OP: | |
533 | ||
534 | obj_desc->integer.value = ACPI_CA_VERSION; | |
535 | break; | |
536 | ||
537 | default: | |
538 | ||
44f6c012 RM |
539 | ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, |
540 | "Unknown constant opcode %X\n", opcode)); | |
1da177e4 LT |
541 | status = AE_AML_OPERAND_TYPE; |
542 | break; | |
543 | } | |
544 | break; | |
545 | ||
546 | ||
547 | case AML_TYPE_LITERAL: | |
548 | ||
549 | obj_desc->integer.value = op->common.value.integer; | |
6f42ccf2 RM |
550 | #ifndef ACPI_NO_METHOD_EXECUTION |
551 | acpi_ex_truncate_for32bit_table (obj_desc); | |
552 | #endif | |
1da177e4 LT |
553 | break; |
554 | ||
555 | ||
556 | default: | |
44f6c012 RM |
557 | ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "Unknown Integer type %X\n", |
558 | op_info->type)); | |
1da177e4 LT |
559 | status = AE_AML_OPERAND_TYPE; |
560 | break; | |
561 | } | |
562 | break; | |
563 | ||
564 | ||
565 | case ACPI_TYPE_STRING: | |
566 | ||
567 | obj_desc->string.pointer = op->common.value.string; | |
568 | obj_desc->string.length = (u32) ACPI_STRLEN (op->common.value.string); | |
569 | ||
570 | /* | |
571 | * The string is contained in the ACPI table, don't ever try | |
572 | * to delete it | |
573 | */ | |
574 | obj_desc->common.flags |= AOPOBJ_STATIC_POINTER; | |
575 | break; | |
576 | ||
577 | ||
578 | case ACPI_TYPE_METHOD: | |
579 | break; | |
580 | ||
581 | ||
582 | case ACPI_TYPE_LOCAL_REFERENCE: | |
583 | ||
584 | switch (op_info->type) { | |
585 | case AML_TYPE_LOCAL_VARIABLE: | |
586 | ||
587 | /* Split the opcode into a base opcode + offset */ | |
588 | ||
589 | obj_desc->reference.opcode = AML_LOCAL_OP; | |
590 | obj_desc->reference.offset = opcode - AML_LOCAL_OP; | |
591 | ||
592 | #ifndef ACPI_NO_METHOD_EXECUTION | |
44f6c012 RM |
593 | status = acpi_ds_method_data_get_node (AML_LOCAL_OP, |
594 | obj_desc->reference.offset, | |
595 | walk_state, | |
596 | (struct acpi_namespace_node **) &obj_desc->reference.object); | |
1da177e4 LT |
597 | #endif |
598 | break; | |
599 | ||
600 | ||
601 | case AML_TYPE_METHOD_ARGUMENT: | |
602 | ||
603 | /* Split the opcode into a base opcode + offset */ | |
604 | ||
605 | obj_desc->reference.opcode = AML_ARG_OP; | |
606 | obj_desc->reference.offset = opcode - AML_ARG_OP; | |
607 | ||
608 | #ifndef ACPI_NO_METHOD_EXECUTION | |
44f6c012 RM |
609 | status = acpi_ds_method_data_get_node (AML_ARG_OP, |
610 | obj_desc->reference.offset, | |
611 | walk_state, | |
612 | (struct acpi_namespace_node **) &obj_desc->reference.object); | |
1da177e4 LT |
613 | #endif |
614 | break; | |
615 | ||
616 | default: /* Other literals, etc.. */ | |
617 | ||
618 | if (op->common.aml_opcode == AML_INT_NAMEPATH_OP) { | |
619 | /* Node was saved in Op */ | |
620 | ||
621 | obj_desc->reference.node = op->common.node; | |
622 | } | |
623 | ||
624 | obj_desc->reference.opcode = opcode; | |
625 | break; | |
626 | } | |
627 | break; | |
628 | ||
629 | ||
630 | default: | |
631 | ||
632 | ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "Unimplemented data type: %X\n", | |
633 | ACPI_GET_OBJECT_TYPE (obj_desc))); | |
634 | ||
635 | status = AE_AML_OPERAND_TYPE; | |
636 | break; | |
637 | } | |
638 | ||
639 | return_ACPI_STATUS (status); | |
640 | } | |
641 | ||
642 |