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1 | /****************************************************************************** |
2 | * | |
3 | * Module Name: dswexec - Dispatcher method execution callbacks; | |
4 | * dispatch to interpreter. | |
5 | * | |
6 | *****************************************************************************/ | |
7 | ||
8 | /* | |
9 | * Copyright (C) 2000 - 2005, R. Byron Moore | |
10 | * All rights reserved. | |
11 | * | |
12 | * Redistribution and use in source and binary forms, with or without | |
13 | * modification, are permitted provided that the following conditions | |
14 | * are met: | |
15 | * 1. Redistributions of source code must retain the above copyright | |
16 | * notice, this list of conditions, and the following disclaimer, | |
17 | * without modification. | |
18 | * 2. Redistributions in binary form must reproduce at minimum a disclaimer | |
19 | * substantially similar to the "NO WARRANTY" disclaimer below | |
20 | * ("Disclaimer") and any redistribution must be conditioned upon | |
21 | * including a substantially similar Disclaimer requirement for further | |
22 | * binary redistribution. | |
23 | * 3. Neither the names of the above-listed copyright holders nor the names | |
24 | * of any contributors may be used to endorse or promote products derived | |
25 | * from this software without specific prior written permission. | |
26 | * | |
27 | * Alternatively, this software may be distributed under the terms of the | |
28 | * GNU General Public License ("GPL") version 2 as published by the Free | |
29 | * Software Foundation. | |
30 | * | |
31 | * NO WARRANTY | |
32 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS | |
33 | * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT | |
34 | * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR | |
35 | * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT | |
36 | * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL | |
37 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS | |
38 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | |
39 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, | |
40 | * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING | |
41 | * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE | |
42 | * POSSIBILITY OF SUCH DAMAGES. | |
43 | */ | |
44 | ||
45 | ||
46 | #include <acpi/acpi.h> | |
47 | #include <acpi/acparser.h> | |
48 | #include <acpi/amlcode.h> | |
49 | #include <acpi/acdispat.h> | |
50 | #include <acpi/acinterp.h> | |
51 | #include <acpi/acnamesp.h> | |
52 | #include <acpi/acdebug.h> | |
53 | #include <acpi/acdisasm.h> | |
54 | ||
55 | ||
56 | #define _COMPONENT ACPI_DISPATCHER | |
57 | ACPI_MODULE_NAME ("dswexec") | |
58 | ||
59 | /* | |
60 | * Dispatch table for opcode classes | |
61 | */ | |
62 | static ACPI_EXECUTE_OP acpi_gbl_op_type_dispatch [] = { | |
63 | acpi_ex_opcode_0A_0T_1R, | |
64 | acpi_ex_opcode_1A_0T_0R, | |
65 | acpi_ex_opcode_1A_0T_1R, | |
66 | acpi_ex_opcode_1A_1T_0R, | |
67 | acpi_ex_opcode_1A_1T_1R, | |
68 | acpi_ex_opcode_2A_0T_0R, | |
69 | acpi_ex_opcode_2A_0T_1R, | |
70 | acpi_ex_opcode_2A_1T_1R, | |
71 | acpi_ex_opcode_2A_2T_1R, | |
72 | acpi_ex_opcode_3A_0T_0R, | |
73 | acpi_ex_opcode_3A_1T_1R, | |
74 | acpi_ex_opcode_6A_0T_1R}; | |
75 | ||
76 | /***************************************************************************** | |
77 | * | |
78 | * FUNCTION: acpi_ds_get_predicate_value | |
79 | * | |
80 | * PARAMETERS: walk_state - Current state of the parse tree walk | |
81 | * | |
82 | * RETURN: Status | |
83 | * | |
84 | * DESCRIPTION: Get the result of a predicate evaluation | |
85 | * | |
86 | ****************************************************************************/ | |
87 | ||
88 | acpi_status | |
89 | acpi_ds_get_predicate_value ( | |
90 | struct acpi_walk_state *walk_state, | |
91 | union acpi_operand_object *result_obj) { | |
92 | acpi_status status = AE_OK; | |
93 | union acpi_operand_object *obj_desc; | |
94 | union acpi_operand_object *local_obj_desc = NULL; | |
95 | ||
96 | ||
97 | ACPI_FUNCTION_TRACE_PTR ("ds_get_predicate_value", walk_state); | |
98 | ||
99 | ||
100 | walk_state->control_state->common.state = 0; | |
101 | ||
102 | if (result_obj) { | |
103 | status = acpi_ds_result_pop (&obj_desc, walk_state); | |
104 | if (ACPI_FAILURE (status)) { | |
105 | ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, | |
106 | "Could not get result from predicate evaluation, %s\n", | |
107 | acpi_format_exception (status))); | |
108 | ||
109 | return_ACPI_STATUS (status); | |
110 | } | |
111 | } | |
112 | else { | |
113 | status = acpi_ds_create_operand (walk_state, walk_state->op, 0); | |
114 | if (ACPI_FAILURE (status)) { | |
115 | return_ACPI_STATUS (status); | |
116 | } | |
117 | ||
118 | status = acpi_ex_resolve_to_value (&walk_state->operands [0], walk_state); | |
119 | if (ACPI_FAILURE (status)) { | |
120 | return_ACPI_STATUS (status); | |
121 | } | |
122 | ||
123 | obj_desc = walk_state->operands [0]; | |
124 | } | |
125 | ||
126 | if (!obj_desc) { | |
127 | ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "No predicate obj_desc=%p State=%p\n", | |
128 | obj_desc, walk_state)); | |
129 | ||
130 | return_ACPI_STATUS (AE_AML_NO_OPERAND); | |
131 | } | |
132 | ||
133 | /* | |
134 | * Result of predicate evaluation must be an Integer | |
135 | * object. Implicitly convert the argument if necessary. | |
136 | */ | |
137 | status = acpi_ex_convert_to_integer (obj_desc, &local_obj_desc, 16); | |
138 | if (ACPI_FAILURE (status)) { | |
139 | goto cleanup; | |
140 | } | |
141 | ||
142 | if (ACPI_GET_OBJECT_TYPE (local_obj_desc) != ACPI_TYPE_INTEGER) { | |
143 | ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, | |
144 | "Bad predicate (not an integer) obj_desc=%p State=%p Type=%X\n", | |
145 | obj_desc, walk_state, ACPI_GET_OBJECT_TYPE (obj_desc))); | |
146 | ||
147 | status = AE_AML_OPERAND_TYPE; | |
148 | goto cleanup; | |
149 | } | |
150 | ||
151 | /* Truncate the predicate to 32-bits if necessary */ | |
152 | ||
153 | acpi_ex_truncate_for32bit_table (local_obj_desc); | |
154 | ||
155 | /* | |
156 | * Save the result of the predicate evaluation on | |
157 | * the control stack | |
158 | */ | |
159 | if (local_obj_desc->integer.value) { | |
160 | walk_state->control_state->common.value = TRUE; | |
161 | } | |
162 | else { | |
163 | /* | |
164 | * Predicate is FALSE, we will just toss the | |
165 | * rest of the package | |
166 | */ | |
167 | walk_state->control_state->common.value = FALSE; | |
168 | status = AE_CTRL_FALSE; | |
169 | } | |
170 | ||
171 | ||
172 | cleanup: | |
173 | ||
174 | ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "Completed a predicate eval=%X Op=%p\n", | |
175 | walk_state->control_state->common.value, walk_state->op)); | |
176 | ||
177 | /* Break to debugger to display result */ | |
178 | ||
179 | ACPI_DEBUGGER_EXEC (acpi_db_display_result_object (local_obj_desc, walk_state)); | |
180 | ||
181 | /* | |
182 | * Delete the predicate result object (we know that | |
183 | * we don't need it anymore) | |
184 | */ | |
185 | if (local_obj_desc != obj_desc) { | |
186 | acpi_ut_remove_reference (local_obj_desc); | |
187 | } | |
188 | acpi_ut_remove_reference (obj_desc); | |
189 | ||
190 | walk_state->control_state->common.state = ACPI_CONTROL_NORMAL; | |
191 | return_ACPI_STATUS (status); | |
192 | } | |
193 | ||
194 | ||
195 | /***************************************************************************** | |
196 | * | |
197 | * FUNCTION: acpi_ds_exec_begin_op | |
198 | * | |
199 | * PARAMETERS: walk_state - Current state of the parse tree walk | |
200 | * out_op - Return op if a new one is created | |
201 | * | |
202 | * RETURN: Status | |
203 | * | |
204 | * DESCRIPTION: Descending callback used during the execution of control | |
205 | * methods. This is where most operators and operands are | |
206 | * dispatched to the interpreter. | |
207 | * | |
208 | ****************************************************************************/ | |
209 | ||
210 | acpi_status | |
211 | acpi_ds_exec_begin_op ( | |
212 | struct acpi_walk_state *walk_state, | |
213 | union acpi_parse_object **out_op) | |
214 | { | |
215 | union acpi_parse_object *op; | |
216 | acpi_status status = AE_OK; | |
217 | u32 opcode_class; | |
218 | ||
219 | ||
220 | ACPI_FUNCTION_TRACE_PTR ("ds_exec_begin_op", walk_state); | |
221 | ||
222 | ||
223 | op = walk_state->op; | |
224 | if (!op) { | |
225 | status = acpi_ds_load2_begin_op (walk_state, out_op); | |
226 | if (ACPI_FAILURE (status)) { | |
227 | return_ACPI_STATUS (status); | |
228 | } | |
229 | ||
230 | op = *out_op; | |
231 | walk_state->op = op; | |
232 | walk_state->opcode = op->common.aml_opcode; | |
233 | walk_state->op_info = acpi_ps_get_opcode_info (op->common.aml_opcode); | |
234 | ||
235 | if (acpi_ns_opens_scope (walk_state->op_info->object_type)) { | |
236 | ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, "(%s) Popping scope for Op %p\n", | |
237 | acpi_ut_get_type_name (walk_state->op_info->object_type), op)); | |
238 | ||
239 | status = acpi_ds_scope_stack_pop (walk_state); | |
240 | if (ACPI_FAILURE (status)) { | |
241 | return_ACPI_STATUS (status); | |
242 | } | |
243 | } | |
244 | } | |
245 | ||
246 | if (op == walk_state->origin) { | |
247 | if (out_op) { | |
248 | *out_op = op; | |
249 | } | |
250 | ||
251 | return_ACPI_STATUS (AE_OK); | |
252 | } | |
253 | ||
254 | /* | |
255 | * If the previous opcode was a conditional, this opcode | |
256 | * must be the beginning of the associated predicate. | |
257 | * Save this knowledge in the current scope descriptor | |
258 | */ | |
259 | if ((walk_state->control_state) && | |
260 | (walk_state->control_state->common.state == | |
261 | ACPI_CONTROL_CONDITIONAL_EXECUTING)) { | |
262 | ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "Exec predicate Op=%p State=%p\n", | |
263 | op, walk_state)); | |
264 | ||
265 | walk_state->control_state->common.state = ACPI_CONTROL_PREDICATE_EXECUTING; | |
266 | ||
267 | /* Save start of predicate */ | |
268 | ||
269 | walk_state->control_state->control.predicate_op = op; | |
270 | } | |
271 | ||
272 | ||
273 | opcode_class = walk_state->op_info->class; | |
274 | ||
275 | /* We want to send namepaths to the load code */ | |
276 | ||
277 | if (op->common.aml_opcode == AML_INT_NAMEPATH_OP) { | |
278 | opcode_class = AML_CLASS_NAMED_OBJECT; | |
279 | } | |
280 | ||
281 | /* | |
282 | * Handle the opcode based upon the opcode type | |
283 | */ | |
284 | switch (opcode_class) { | |
285 | case AML_CLASS_CONTROL: | |
286 | ||
287 | status = acpi_ds_result_stack_push (walk_state); | |
288 | if (ACPI_FAILURE (status)) { | |
289 | return_ACPI_STATUS (status); | |
290 | } | |
291 | ||
292 | status = acpi_ds_exec_begin_control_op (walk_state, op); | |
293 | break; | |
294 | ||
295 | ||
296 | case AML_CLASS_NAMED_OBJECT: | |
297 | ||
298 | if (walk_state->walk_type == ACPI_WALK_METHOD) { | |
299 | /* | |
300 | * Found a named object declaration during method | |
301 | * execution; we must enter this object into the | |
302 | * namespace. The created object is temporary and | |
303 | * will be deleted upon completion of the execution | |
304 | * of this method. | |
305 | */ | |
306 | status = acpi_ds_load2_begin_op (walk_state, NULL); | |
307 | } | |
308 | ||
309 | if (op->common.aml_opcode == AML_REGION_OP) { | |
310 | status = acpi_ds_result_stack_push (walk_state); | |
311 | } | |
312 | break; | |
313 | ||
314 | ||
315 | case AML_CLASS_EXECUTE: | |
316 | case AML_CLASS_CREATE: | |
317 | ||
318 | /* | |
319 | * Most operators with arguments. | |
320 | * Start a new result/operand state | |
321 | */ | |
322 | status = acpi_ds_result_stack_push (walk_state); | |
323 | break; | |
324 | ||
325 | ||
326 | default: | |
327 | break; | |
328 | } | |
329 | ||
330 | /* Nothing to do here during method execution */ | |
331 | ||
332 | return_ACPI_STATUS (status); | |
333 | } | |
334 | ||
335 | ||
336 | /***************************************************************************** | |
337 | * | |
338 | * FUNCTION: acpi_ds_exec_end_op | |
339 | * | |
340 | * PARAMETERS: walk_state - Current state of the parse tree walk | |
341 | * Op - Op that has been just been completed in the | |
342 | * walk; Arguments have now been evaluated. | |
343 | * | |
344 | * RETURN: Status | |
345 | * | |
346 | * DESCRIPTION: Ascending callback used during the execution of control | |
347 | * methods. The only thing we really need to do here is to | |
348 | * notice the beginning of IF, ELSE, and WHILE blocks. | |
349 | * | |
350 | ****************************************************************************/ | |
351 | ||
352 | acpi_status | |
353 | acpi_ds_exec_end_op ( | |
354 | struct acpi_walk_state *walk_state) | |
355 | { | |
356 | union acpi_parse_object *op; | |
357 | acpi_status status = AE_OK; | |
358 | u32 op_type; | |
359 | u32 op_class; | |
360 | union acpi_parse_object *next_op; | |
361 | union acpi_parse_object *first_arg; | |
362 | ||
363 | ||
364 | ACPI_FUNCTION_TRACE_PTR ("ds_exec_end_op", walk_state); | |
365 | ||
366 | ||
367 | op = walk_state->op; | |
368 | op_type = walk_state->op_info->type; | |
369 | op_class = walk_state->op_info->class; | |
370 | ||
371 | if (op_class == AML_CLASS_UNKNOWN) { | |
372 | ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "Unknown opcode %X\n", op->common.aml_opcode)); | |
373 | return_ACPI_STATUS (AE_NOT_IMPLEMENTED); | |
374 | } | |
375 | ||
376 | first_arg = op->common.value.arg; | |
377 | ||
378 | /* Init the walk state */ | |
379 | ||
380 | walk_state->num_operands = 0; | |
381 | walk_state->return_desc = NULL; | |
382 | walk_state->result_obj = NULL; | |
383 | ||
384 | /* Call debugger for single step support (DEBUG build only) */ | |
385 | ||
386 | ACPI_DEBUGGER_EXEC (status = acpi_db_single_step (walk_state, op, op_class)); | |
387 | ACPI_DEBUGGER_EXEC (if (ACPI_FAILURE (status)) {return_ACPI_STATUS (status);}); | |
388 | ||
389 | /* Decode the Opcode Class */ | |
390 | ||
391 | switch (op_class) { | |
392 | case AML_CLASS_ARGUMENT: /* constants, literals, etc. -- do nothing */ | |
393 | break; | |
394 | ||
395 | ||
396 | case AML_CLASS_EXECUTE: /* most operators with arguments */ | |
397 | ||
398 | /* Build resolved operand stack */ | |
399 | ||
400 | status = acpi_ds_create_operands (walk_state, first_arg); | |
401 | if (ACPI_FAILURE (status)) { | |
402 | goto cleanup; | |
403 | } | |
404 | ||
405 | /* Done with this result state (Now that operand stack is built) */ | |
406 | ||
407 | status = acpi_ds_result_stack_pop (walk_state); | |
408 | if (ACPI_FAILURE (status)) { | |
409 | goto cleanup; | |
410 | } | |
411 | ||
412 | /* | |
413 | * All opcodes require operand resolution, with the only exceptions | |
414 | * being the object_type and size_of operators. | |
415 | */ | |
416 | if (!(walk_state->op_info->flags & AML_NO_OPERAND_RESOLVE)) { | |
417 | /* Resolve all operands */ | |
418 | ||
419 | status = acpi_ex_resolve_operands (walk_state->opcode, | |
420 | &(walk_state->operands [walk_state->num_operands -1]), | |
421 | walk_state); | |
422 | if (ACPI_SUCCESS (status)) { | |
423 | ACPI_DUMP_OPERANDS (ACPI_WALK_OPERANDS, ACPI_IMODE_EXECUTE, | |
424 | acpi_ps_get_opcode_name (walk_state->opcode), | |
425 | walk_state->num_operands, "after ex_resolve_operands"); | |
426 | } | |
427 | } | |
428 | ||
429 | if (ACPI_SUCCESS (status)) { | |
430 | /* | |
431 | * Dispatch the request to the appropriate interpreter handler | |
432 | * routine. There is one routine per opcode "type" based upon the | |
433 | * number of opcode arguments and return type. | |
434 | */ | |
435 | status = acpi_gbl_op_type_dispatch[op_type] (walk_state); | |
436 | } | |
437 | else { | |
438 | /* | |
439 | * Treat constructs of the form "Store(local_x,local_x)" as noops when the | |
440 | * Local is uninitialized. | |
441 | */ | |
442 | if ((status == AE_AML_UNINITIALIZED_LOCAL) && | |
443 | (walk_state->opcode == AML_STORE_OP) && | |
444 | (walk_state->operands[0]->common.type == ACPI_TYPE_LOCAL_REFERENCE) && | |
445 | (walk_state->operands[1]->common.type == ACPI_TYPE_LOCAL_REFERENCE) && | |
446 | (walk_state->operands[0]->reference.opcode == | |
447 | walk_state->operands[1]->reference.opcode) && | |
448 | (walk_state->operands[0]->reference.offset == | |
449 | walk_state->operands[1]->reference.offset)) { | |
450 | status = AE_OK; | |
451 | } | |
452 | else { | |
453 | ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, | |
454 | "[%s]: Could not resolve operands, %s\n", | |
455 | acpi_ps_get_opcode_name (walk_state->opcode), | |
456 | acpi_format_exception (status))); | |
457 | } | |
458 | } | |
459 | ||
460 | /* Always delete the argument objects and clear the operand stack */ | |
461 | ||
462 | acpi_ds_clear_operands (walk_state); | |
463 | ||
464 | /* | |
465 | * If a result object was returned from above, push it on the | |
466 | * current result stack | |
467 | */ | |
468 | if (ACPI_SUCCESS (status) && | |
469 | walk_state->result_obj) { | |
470 | status = acpi_ds_result_push (walk_state->result_obj, walk_state); | |
471 | } | |
472 | ||
473 | break; | |
474 | ||
475 | ||
476 | default: | |
477 | ||
478 | switch (op_type) { | |
479 | case AML_TYPE_CONTROL: /* Type 1 opcode, IF/ELSE/WHILE/NOOP */ | |
480 | ||
481 | /* 1 Operand, 0 external_result, 0 internal_result */ | |
482 | ||
483 | status = acpi_ds_exec_end_control_op (walk_state, op); | |
484 | ||
485 | /* Make sure to properly pop the result stack */ | |
486 | ||
487 | if (ACPI_SUCCESS (status)) { | |
488 | status = acpi_ds_result_stack_pop (walk_state); | |
489 | } | |
490 | else if (status == AE_CTRL_PENDING) { | |
491 | status = acpi_ds_result_stack_pop (walk_state); | |
492 | if (ACPI_SUCCESS (status)) { | |
493 | status = AE_CTRL_PENDING; | |
494 | } | |
495 | } | |
496 | break; | |
497 | ||
498 | ||
499 | case AML_TYPE_METHOD_CALL: | |
500 | ||
501 | /* | |
502 | * If the method is referenced from within a package | |
503 | * declaration, it is not a invocation of the method, just | |
504 | * a reference to it. | |
505 | */ | |
506 | if ((op->asl.parent) && | |
507 | ((op->asl.parent->asl.aml_opcode == AML_PACKAGE_OP) || | |
508 | (op->asl.parent->asl.aml_opcode == AML_VAR_PACKAGE_OP))) { | |
509 | ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, "Method Reference in a Package, Op=%p\n", op)); | |
510 | op->common.node = (struct acpi_namespace_node *) op->asl.value.arg->asl.node->object; | |
511 | acpi_ut_add_reference (op->asl.value.arg->asl.node->object); | |
512 | return_ACPI_STATUS (AE_OK); | |
513 | } | |
514 | ||
515 | ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, "Method invocation, Op=%p\n", op)); | |
516 | ||
517 | /* | |
518 | * (AML_METHODCALL) Op->Asl.Value.Arg->Asl.Node contains | |
519 | * the method Node pointer | |
520 | */ | |
521 | /* next_op points to the op that holds the method name */ | |
522 | ||
523 | next_op = first_arg; | |
524 | ||
525 | /* next_op points to first argument op */ | |
526 | ||
527 | next_op = next_op->common.next; | |
528 | ||
529 | /* | |
530 | * Get the method's arguments and put them on the operand stack | |
531 | */ | |
532 | status = acpi_ds_create_operands (walk_state, next_op); | |
533 | if (ACPI_FAILURE (status)) { | |
534 | break; | |
535 | } | |
536 | ||
537 | /* | |
538 | * Since the operands will be passed to another control method, | |
539 | * we must resolve all local references here (Local variables, | |
540 | * arguments to *this* method, etc.) | |
541 | */ | |
542 | status = acpi_ds_resolve_operands (walk_state); | |
543 | if (ACPI_FAILURE (status)) { | |
544 | /* On error, clear all resolved operands */ | |
545 | ||
546 | acpi_ds_clear_operands (walk_state); | |
547 | break; | |
548 | } | |
549 | ||
550 | /* | |
551 | * Tell the walk loop to preempt this running method and | |
552 | * execute the new method | |
553 | */ | |
554 | status = AE_CTRL_TRANSFER; | |
555 | ||
556 | /* | |
557 | * Return now; we don't want to disturb anything, | |
558 | * especially the operand count! | |
559 | */ | |
560 | return_ACPI_STATUS (status); | |
561 | ||
562 | ||
563 | case AML_TYPE_CREATE_FIELD: | |
564 | ||
565 | ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, | |
566 | "Executing create_field Buffer/Index Op=%p\n", op)); | |
567 | ||
568 | status = acpi_ds_load2_end_op (walk_state); | |
569 | if (ACPI_FAILURE (status)) { | |
570 | break; | |
571 | } | |
572 | ||
573 | status = acpi_ds_eval_buffer_field_operands (walk_state, op); | |
574 | break; | |
575 | ||
576 | ||
577 | case AML_TYPE_CREATE_OBJECT: | |
578 | ||
579 | ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, | |
580 | "Executing create_object (Buffer/Package) Op=%p\n", op)); | |
581 | ||
582 | switch (op->common.parent->common.aml_opcode) { | |
583 | case AML_NAME_OP: | |
584 | ||
585 | /* | |
586 | * Put the Node on the object stack (Contains the ACPI Name of | |
587 | * this object) | |
588 | */ | |
589 | walk_state->operands[0] = (void *) op->common.parent->common.node; | |
590 | walk_state->num_operands = 1; | |
591 | ||
592 | status = acpi_ds_create_node (walk_state, op->common.parent->common.node, op->common.parent); | |
593 | if (ACPI_FAILURE (status)) { | |
594 | break; | |
595 | } | |
596 | ||
597 | /* Fall through */ | |
598 | /*lint -fallthrough */ | |
599 | ||
600 | case AML_INT_EVAL_SUBTREE_OP: | |
601 | ||
602 | status = acpi_ds_eval_data_object_operands (walk_state, op, | |
603 | acpi_ns_get_attached_object (op->common.parent->common.node)); | |
604 | break; | |
605 | ||
606 | default: | |
607 | ||
608 | status = acpi_ds_eval_data_object_operands (walk_state, op, NULL); | |
609 | break; | |
610 | } | |
611 | ||
612 | /* Done with this result state (Now that operand stack is built) */ | |
613 | ||
614 | status = acpi_ds_result_stack_pop (walk_state); | |
615 | if (ACPI_FAILURE (status)) { | |
616 | goto cleanup; | |
617 | } | |
618 | ||
619 | /* | |
620 | * If a result object was returned from above, push it on the | |
621 | * current result stack | |
622 | */ | |
623 | if (ACPI_SUCCESS (status) && | |
624 | walk_state->result_obj) { | |
625 | status = acpi_ds_result_push (walk_state->result_obj, walk_state); | |
626 | } | |
627 | break; | |
628 | ||
629 | ||
630 | case AML_TYPE_NAMED_FIELD: | |
631 | case AML_TYPE_NAMED_COMPLEX: | |
632 | case AML_TYPE_NAMED_SIMPLE: | |
633 | case AML_TYPE_NAMED_NO_OBJ: | |
634 | ||
635 | status = acpi_ds_load2_end_op (walk_state); | |
636 | if (ACPI_FAILURE (status)) { | |
637 | break; | |
638 | } | |
639 | ||
640 | if (op->common.aml_opcode == AML_REGION_OP) { | |
641 | ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, | |
642 | "Executing op_region Address/Length Op=%p\n", op)); | |
643 | ||
644 | status = acpi_ds_eval_region_operands (walk_state, op); | |
645 | if (ACPI_FAILURE (status)) { | |
646 | break; | |
647 | } | |
648 | ||
649 | status = acpi_ds_result_stack_pop (walk_state); | |
650 | } | |
651 | ||
652 | break; | |
653 | ||
654 | ||
655 | case AML_TYPE_UNDEFINED: | |
656 | ||
657 | ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "Undefined opcode type Op=%p\n", op)); | |
658 | return_ACPI_STATUS (AE_NOT_IMPLEMENTED); | |
659 | ||
660 | ||
661 | case AML_TYPE_BOGUS: | |
662 | ||
663 | ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, | |
664 | "Internal opcode=%X type Op=%p\n", | |
665 | walk_state->opcode, op)); | |
666 | break; | |
667 | ||
668 | ||
669 | default: | |
670 | ||
671 | ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, | |
672 | "Unimplemented opcode, class=%X type=%X Opcode=%X Op=%p\n", | |
673 | op_class, op_type, op->common.aml_opcode, op)); | |
674 | ||
675 | status = AE_NOT_IMPLEMENTED; | |
676 | break; | |
677 | } | |
678 | } | |
679 | ||
680 | /* | |
681 | * ACPI 2.0 support for 64-bit integers: Truncate numeric | |
682 | * result value if we are executing from a 32-bit ACPI table | |
683 | */ | |
684 | acpi_ex_truncate_for32bit_table (walk_state->result_obj); | |
685 | ||
686 | /* | |
687 | * Check if we just completed the evaluation of a | |
688 | * conditional predicate | |
689 | */ | |
690 | ||
691 | if ((ACPI_SUCCESS (status)) && | |
692 | (walk_state->control_state) && | |
693 | (walk_state->control_state->common.state == | |
694 | ACPI_CONTROL_PREDICATE_EXECUTING) && | |
695 | (walk_state->control_state->control.predicate_op == op)) { | |
696 | status = acpi_ds_get_predicate_value (walk_state, walk_state->result_obj); | |
697 | walk_state->result_obj = NULL; | |
698 | } | |
699 | ||
700 | ||
701 | cleanup: | |
702 | ||
703 | /* Invoke exception handler on error */ | |
704 | ||
705 | if (ACPI_FAILURE (status) && | |
706 | acpi_gbl_exception_handler && | |
707 | !(status & AE_CODE_CONTROL)) { | |
708 | acpi_ex_exit_interpreter (); | |
709 | status = acpi_gbl_exception_handler (status, | |
710 | walk_state->method_node->name.integer, walk_state->opcode, | |
711 | walk_state->aml_offset, NULL); | |
712 | acpi_ex_enter_interpreter (); | |
713 | } | |
714 | ||
715 | if (walk_state->result_obj) { | |
716 | /* Break to debugger to display result */ | |
717 | ||
718 | ACPI_DEBUGGER_EXEC (acpi_db_display_result_object (walk_state->result_obj, walk_state)); | |
719 | ||
720 | /* | |
721 | * Delete the result op if and only if: | |
722 | * Parent will not use the result -- such as any | |
723 | * non-nested type2 op in a method (parent will be method) | |
724 | */ | |
725 | acpi_ds_delete_result_if_not_used (op, walk_state->result_obj, walk_state); | |
726 | } | |
727 | ||
728 | #ifdef _UNDER_DEVELOPMENT | |
729 | ||
730 | if (walk_state->parser_state.aml == walk_state->parser_state.aml_end) { | |
731 | acpi_db_method_end (walk_state); | |
732 | } | |
733 | #endif | |
734 | ||
735 | /* Always clear the object stack */ | |
736 | ||
737 | walk_state->num_operands = 0; | |
738 | ||
739 | #ifdef ACPI_DISASSEMBLER | |
740 | ||
741 | /* On error, display method locals/args */ | |
742 | ||
743 | if (ACPI_FAILURE (status)) { | |
744 | acpi_dm_dump_method_info (status, walk_state, op); | |
745 | } | |
746 | #endif | |
747 | ||
748 | return_ACPI_STATUS (status); | |
749 | } | |
750 | ||
751 |