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1da177e4 LT |
1 | /****************************************************************************** |
2 | * | |
3 | * Module Name: dswexec - Dispatcher method execution callbacks; | |
4 | * dispatch to interpreter. | |
5 | * | |
6 | *****************************************************************************/ | |
7 | ||
8 | /* | |
7735ca0e | 9 | * Copyright (C) 2000 - 2017, Intel Corp. |
1da177e4 LT |
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 | ||
1da177e4 | 45 | #include <acpi/acpi.h> |
e2f7a777 LB |
46 | #include "accommon.h" |
47 | #include "acparser.h" | |
48 | #include "amlcode.h" | |
49 | #include "acdispat.h" | |
50 | #include "acinterp.h" | |
51 | #include "acnamesp.h" | |
52 | #include "acdebug.h" | |
1da177e4 | 53 | |
1da177e4 | 54 | #define _COMPONENT ACPI_DISPATCHER |
4be44fcd | 55 | ACPI_MODULE_NAME("dswexec") |
1da177e4 LT |
56 | |
57 | /* | |
58 | * Dispatch table for opcode classes | |
59 | */ | |
644ef74e | 60 | static acpi_execute_op acpi_gbl_op_type_dispatch[] = { |
4be44fcd LB |
61 | acpi_ex_opcode_0A_0T_1R, |
62 | acpi_ex_opcode_1A_0T_0R, | |
63 | acpi_ex_opcode_1A_0T_1R, | |
64 | acpi_ex_opcode_1A_1T_0R, | |
65 | acpi_ex_opcode_1A_1T_1R, | |
66 | acpi_ex_opcode_2A_0T_0R, | |
67 | acpi_ex_opcode_2A_0T_1R, | |
68 | acpi_ex_opcode_2A_1T_1R, | |
69 | acpi_ex_opcode_2A_2T_1R, | |
70 | acpi_ex_opcode_3A_0T_0R, | |
71 | acpi_ex_opcode_3A_1T_1R, | |
72 | acpi_ex_opcode_6A_0T_1R | |
73 | }; | |
44f6c012 | 74 | |
1da177e4 LT |
75 | /***************************************************************************** |
76 | * | |
77 | * FUNCTION: acpi_ds_get_predicate_value | |
78 | * | |
79 | * PARAMETERS: walk_state - Current state of the parse tree walk | |
44f6c012 | 80 | * result_obj - if non-zero, pop result from result stack |
1da177e4 LT |
81 | * |
82 | * RETURN: Status | |
83 | * | |
84 | * DESCRIPTION: Get the result of a predicate evaluation | |
85 | * | |
86 | ****************************************************************************/ | |
87 | ||
88 | acpi_status | |
4be44fcd LB |
89 | acpi_ds_get_predicate_value(struct acpi_walk_state *walk_state, |
90 | union acpi_operand_object *result_obj) | |
91 | { | |
92 | acpi_status status = AE_OK; | |
93 | union acpi_operand_object *obj_desc; | |
94 | union acpi_operand_object *local_obj_desc = NULL; | |
1da177e4 | 95 | |
b229cf92 | 96 | ACPI_FUNCTION_TRACE_PTR(ds_get_predicate_value, walk_state); |
1da177e4 LT |
97 | |
98 | walk_state->control_state->common.state = 0; | |
99 | ||
100 | if (result_obj) { | |
4be44fcd LB |
101 | status = acpi_ds_result_pop(&obj_desc, walk_state); |
102 | if (ACPI_FAILURE(status)) { | |
b8e4d893 BM |
103 | ACPI_EXCEPTION((AE_INFO, status, |
104 | "Could not get result from predicate evaluation")); | |
1da177e4 | 105 | |
4be44fcd | 106 | return_ACPI_STATUS(status); |
1da177e4 | 107 | } |
4be44fcd LB |
108 | } else { |
109 | status = acpi_ds_create_operand(walk_state, walk_state->op, 0); | |
110 | if (ACPI_FAILURE(status)) { | |
111 | return_ACPI_STATUS(status); | |
1da177e4 LT |
112 | } |
113 | ||
4be44fcd LB |
114 | status = |
115 | acpi_ex_resolve_to_value(&walk_state->operands[0], | |
116 | walk_state); | |
117 | if (ACPI_FAILURE(status)) { | |
118 | return_ACPI_STATUS(status); | |
1da177e4 LT |
119 | } |
120 | ||
4be44fcd | 121 | obj_desc = walk_state->operands[0]; |
1da177e4 LT |
122 | } |
123 | ||
124 | if (!obj_desc) { | |
b8e4d893 | 125 | ACPI_ERROR((AE_INFO, |
b229cf92 | 126 | "No predicate ObjDesc=%p State=%p", |
b8e4d893 | 127 | obj_desc, walk_state)); |
1da177e4 | 128 | |
4be44fcd | 129 | return_ACPI_STATUS(AE_AML_NO_OPERAND); |
1da177e4 LT |
130 | } |
131 | ||
132 | /* | |
133 | * Result of predicate evaluation must be an Integer | |
134 | * object. Implicitly convert the argument if necessary. | |
135 | */ | |
5ebd2eaa BM |
136 | status = acpi_ex_convert_to_integer(obj_desc, &local_obj_desc, |
137 | ACPI_STRTOUL_BASE16); | |
4be44fcd | 138 | if (ACPI_FAILURE(status)) { |
1da177e4 LT |
139 | goto cleanup; |
140 | } | |
141 | ||
3371c19c | 142 | if (local_obj_desc->common.type != ACPI_TYPE_INTEGER) { |
b8e4d893 | 143 | ACPI_ERROR((AE_INFO, |
f6a22b0b | 144 | "Bad predicate (not an integer) ObjDesc=%p State=%p Type=0x%X", |
3371c19c | 145 | obj_desc, walk_state, obj_desc->common.type)); |
1da177e4 LT |
146 | |
147 | status = AE_AML_OPERAND_TYPE; | |
148 | goto cleanup; | |
149 | } | |
150 | ||
151 | /* Truncate the predicate to 32-bits if necessary */ | |
152 | ||
ef42e53f | 153 | (void)acpi_ex_truncate_for32bit_table(local_obj_desc); |
1da177e4 LT |
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; | |
4be44fcd | 161 | } else { |
1da177e4 LT |
162 | /* |
163 | * Predicate is FALSE, we will just toss the | |
164 | * rest of the package | |
165 | */ | |
166 | walk_state->control_state->common.value = FALSE; | |
167 | status = AE_CTRL_FALSE; | |
168 | } | |
169 | ||
b9d1312a LM |
170 | /* Predicate can be used for an implicit return value */ |
171 | ||
172 | (void)acpi_ds_do_implicit_return(local_obj_desc, walk_state, TRUE); | |
173 | ||
10622bf8 | 174 | cleanup: |
1da177e4 | 175 | |
1fad8738 BM |
176 | ACPI_DEBUG_PRINT((ACPI_DB_EXEC, |
177 | "Completed a predicate eval=%X Op=%p\n", | |
4be44fcd LB |
178 | walk_state->control_state->common.value, |
179 | walk_state->op)); | |
1da177e4 | 180 | |
4be44fcd | 181 | /* Break to debugger to display result */ |
1da177e4 | 182 | |
8a2a2501 | 183 | acpi_db_display_result_object(local_obj_desc, walk_state); |
1da177e4 LT |
184 | |
185 | /* | |
186 | * Delete the predicate result object (we know that | |
187 | * we don't need it anymore) | |
188 | */ | |
189 | if (local_obj_desc != obj_desc) { | |
4be44fcd | 190 | acpi_ut_remove_reference(local_obj_desc); |
1da177e4 | 191 | } |
4be44fcd | 192 | acpi_ut_remove_reference(obj_desc); |
1da177e4 LT |
193 | |
194 | walk_state->control_state->common.state = ACPI_CONTROL_NORMAL; | |
4be44fcd | 195 | return_ACPI_STATUS(status); |
1da177e4 LT |
196 | } |
197 | ||
1da177e4 LT |
198 | /***************************************************************************** |
199 | * | |
200 | * FUNCTION: acpi_ds_exec_begin_op | |
201 | * | |
202 | * PARAMETERS: walk_state - Current state of the parse tree walk | |
44f6c012 | 203 | * out_op - Where to return op if a new one is created |
1da177e4 LT |
204 | * |
205 | * RETURN: Status | |
206 | * | |
207 | * DESCRIPTION: Descending callback used during the execution of control | |
73a3090a | 208 | * methods. This is where most operators and operands are |
1da177e4 LT |
209 | * dispatched to the interpreter. |
210 | * | |
211 | ****************************************************************************/ | |
212 | ||
213 | acpi_status | |
4be44fcd LB |
214 | acpi_ds_exec_begin_op(struct acpi_walk_state *walk_state, |
215 | union acpi_parse_object **out_op) | |
1da177e4 | 216 | { |
4be44fcd LB |
217 | union acpi_parse_object *op; |
218 | acpi_status status = AE_OK; | |
219 | u32 opcode_class; | |
1da177e4 | 220 | |
b229cf92 | 221 | ACPI_FUNCTION_TRACE_PTR(ds_exec_begin_op, walk_state); |
1da177e4 LT |
222 | |
223 | op = walk_state->op; | |
224 | if (!op) { | |
4be44fcd LB |
225 | status = acpi_ds_load2_begin_op(walk_state, out_op); |
226 | if (ACPI_FAILURE(status)) { | |
867c9aec | 227 | goto error_exit; |
1da177e4 LT |
228 | } |
229 | ||
230 | op = *out_op; | |
231 | walk_state->op = op; | |
232 | walk_state->opcode = op->common.aml_opcode; | |
4be44fcd LB |
233 | walk_state->op_info = |
234 | acpi_ps_get_opcode_info(op->common.aml_opcode); | |
235 | ||
236 | if (acpi_ns_opens_scope(walk_state->op_info->object_type)) { | |
237 | ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH, | |
238 | "(%s) Popping scope for Op %p\n", | |
239 | acpi_ut_get_type_name(walk_state-> | |
240 | op_info-> | |
241 | object_type), | |
242 | op)); | |
243 | ||
244 | status = acpi_ds_scope_stack_pop(walk_state); | |
245 | if (ACPI_FAILURE(status)) { | |
867c9aec | 246 | goto error_exit; |
1da177e4 LT |
247 | } |
248 | } | |
249 | } | |
250 | ||
251 | if (op == walk_state->origin) { | |
252 | if (out_op) { | |
253 | *out_op = op; | |
254 | } | |
255 | ||
4be44fcd | 256 | return_ACPI_STATUS(AE_OK); |
1da177e4 LT |
257 | } |
258 | ||
259 | /* | |
260 | * If the previous opcode was a conditional, this opcode | |
261 | * must be the beginning of the associated predicate. | |
262 | * Save this knowledge in the current scope descriptor | |
263 | */ | |
264 | if ((walk_state->control_state) && | |
4be44fcd LB |
265 | (walk_state->control_state->common.state == |
266 | ACPI_CONTROL_CONDITIONAL_EXECUTING)) { | |
267 | ACPI_DEBUG_PRINT((ACPI_DB_EXEC, | |
1fad8738 BM |
268 | "Exec predicate Op=%p State=%p\n", |
269 | op, walk_state)); | |
1da177e4 | 270 | |
4be44fcd LB |
271 | walk_state->control_state->common.state = |
272 | ACPI_CONTROL_PREDICATE_EXECUTING; | |
1da177e4 LT |
273 | |
274 | /* Save start of predicate */ | |
275 | ||
276 | walk_state->control_state->control.predicate_op = op; | |
277 | } | |
278 | ||
1da177e4 LT |
279 | opcode_class = walk_state->op_info->class; |
280 | ||
281 | /* We want to send namepaths to the load code */ | |
282 | ||
283 | if (op->common.aml_opcode == AML_INT_NAMEPATH_OP) { | |
284 | opcode_class = AML_CLASS_NAMED_OBJECT; | |
285 | } | |
286 | ||
287 | /* | |
288 | * Handle the opcode based upon the opcode type | |
289 | */ | |
290 | switch (opcode_class) { | |
291 | case AML_CLASS_CONTROL: | |
292 | ||
4be44fcd | 293 | status = acpi_ds_exec_begin_control_op(walk_state, op); |
1da177e4 LT |
294 | break; |
295 | ||
1da177e4 LT |
296 | case AML_CLASS_NAMED_OBJECT: |
297 | ||
4119532c | 298 | if (walk_state->walk_type & ACPI_WALK_METHOD) { |
1da177e4 | 299 | /* |
44f6c012 | 300 | * Found a named object declaration during method execution; |
73a3090a | 301 | * we must enter this object into the namespace. The created |
44f6c012 RM |
302 | * object is temporary and will be deleted upon completion of |
303 | * the execution of this method. | |
8df3fc98 BM |
304 | * |
305 | * Note 10/2010: Except for the Scope() op. This opcode does | |
306 | * not actually create a new object, it refers to an existing | |
307 | * object. However, for Scope(), we want to indeed open a | |
308 | * new scope. | |
1da177e4 | 309 | */ |
8df3fc98 BM |
310 | if (op->common.aml_opcode != AML_SCOPE_OP) { |
311 | status = | |
312 | acpi_ds_load2_begin_op(walk_state, NULL); | |
313 | } else { | |
314 | status = | |
315 | acpi_ds_scope_stack_push(op->named.node, | |
316 | op->named.node-> | |
317 | type, walk_state); | |
318 | if (ACPI_FAILURE(status)) { | |
319 | return_ACPI_STATUS(status); | |
320 | } | |
321 | } | |
1da177e4 | 322 | } |
1da177e4 LT |
323 | break; |
324 | ||
1da177e4 LT |
325 | case AML_CLASS_EXECUTE: |
326 | case AML_CLASS_CREATE: | |
773069d4 | 327 | |
1da177e4 LT |
328 | break; |
329 | ||
1da177e4 | 330 | default: |
1d1ea1b7 | 331 | |
1da177e4 LT |
332 | break; |
333 | } | |
334 | ||
335 | /* Nothing to do here during method execution */ | |
336 | ||
4be44fcd | 337 | return_ACPI_STATUS(status); |
867c9aec | 338 | |
10622bf8 | 339 | error_exit: |
867c9aec BM |
340 | status = acpi_ds_method_error(status, walk_state); |
341 | return_ACPI_STATUS(status); | |
1da177e4 LT |
342 | } |
343 | ||
1da177e4 LT |
344 | /***************************************************************************** |
345 | * | |
346 | * FUNCTION: acpi_ds_exec_end_op | |
347 | * | |
348 | * PARAMETERS: walk_state - Current state of the parse tree walk | |
1da177e4 LT |
349 | * |
350 | * RETURN: Status | |
351 | * | |
352 | * DESCRIPTION: Ascending callback used during the execution of control | |
73a3090a | 353 | * methods. The only thing we really need to do here is to |
1da177e4 LT |
354 | * notice the beginning of IF, ELSE, and WHILE blocks. |
355 | * | |
356 | ****************************************************************************/ | |
357 | ||
4be44fcd | 358 | acpi_status acpi_ds_exec_end_op(struct acpi_walk_state *walk_state) |
1da177e4 | 359 | { |
4be44fcd LB |
360 | union acpi_parse_object *op; |
361 | acpi_status status = AE_OK; | |
362 | u32 op_type; | |
363 | u32 op_class; | |
364 | union acpi_parse_object *next_op; | |
365 | union acpi_parse_object *first_arg; | |
1da177e4 | 366 | |
b229cf92 | 367 | ACPI_FUNCTION_TRACE_PTR(ds_exec_end_op, walk_state); |
1da177e4 | 368 | |
4be44fcd | 369 | op = walk_state->op; |
1da177e4 LT |
370 | op_type = walk_state->op_info->type; |
371 | op_class = walk_state->op_info->class; | |
372 | ||
373 | if (op_class == AML_CLASS_UNKNOWN) { | |
f6a22b0b | 374 | ACPI_ERROR((AE_INFO, "Unknown opcode 0x%X", |
b8e4d893 | 375 | op->common.aml_opcode)); |
4be44fcd | 376 | return_ACPI_STATUS(AE_NOT_IMPLEMENTED); |
1da177e4 LT |
377 | } |
378 | ||
379 | first_arg = op->common.value.arg; | |
380 | ||
381 | /* Init the walk state */ | |
382 | ||
383 | walk_state->num_operands = 0; | |
773069d4 | 384 | walk_state->operand_index = 0; |
1da177e4 LT |
385 | walk_state->return_desc = NULL; |
386 | walk_state->result_obj = NULL; | |
387 | ||
388 | /* Call debugger for single step support (DEBUG build only) */ | |
389 | ||
8a2a2501 LZ |
390 | status = acpi_db_single_step(walk_state, op, op_class); |
391 | if (ACPI_FAILURE(status)) { | |
392 | return_ACPI_STATUS(status); | |
393 | } | |
1da177e4 LT |
394 | |
395 | /* Decode the Opcode Class */ | |
396 | ||
397 | switch (op_class) { | |
4e3156b1 BM |
398 | case AML_CLASS_ARGUMENT: /* Constants, literals, etc. */ |
399 | ||
400 | if (walk_state->opcode == AML_INT_NAMEPATH_OP) { | |
401 | status = acpi_ds_evaluate_name_path(walk_state); | |
402 | if (ACPI_FAILURE(status)) { | |
403 | goto cleanup; | |
404 | } | |
405 | } | |
1da177e4 LT |
406 | break; |
407 | ||
4e3156b1 | 408 | case AML_CLASS_EXECUTE: /* Most operators with arguments */ |
1da177e4 LT |
409 | |
410 | /* Build resolved operand stack */ | |
411 | ||
4be44fcd LB |
412 | status = acpi_ds_create_operands(walk_state, first_arg); |
413 | if (ACPI_FAILURE(status)) { | |
1da177e4 LT |
414 | goto cleanup; |
415 | } | |
416 | ||
1da177e4 LT |
417 | /* |
418 | * All opcodes require operand resolution, with the only exceptions | |
419 | * being the object_type and size_of operators. | |
420 | */ | |
421 | if (!(walk_state->op_info->flags & AML_NO_OPERAND_RESOLVE)) { | |
52fc0b02 | 422 | |
1da177e4 LT |
423 | /* Resolve all operands */ |
424 | ||
4be44fcd LB |
425 | status = acpi_ex_resolve_operands(walk_state->opcode, |
426 | &(walk_state-> | |
427 | operands | |
428 | [walk_state-> | |
429 | num_operands - 1]), | |
430 | walk_state); | |
1da177e4 LT |
431 | } |
432 | ||
4be44fcd | 433 | if (ACPI_SUCCESS(status)) { |
1da177e4 LT |
434 | /* |
435 | * Dispatch the request to the appropriate interpreter handler | |
73a3090a | 436 | * routine. There is one routine per opcode "type" based upon the |
1da177e4 LT |
437 | * number of opcode arguments and return type. |
438 | */ | |
4be44fcd LB |
439 | status = |
440 | acpi_gbl_op_type_dispatch[op_type] (walk_state); | |
441 | } else { | |
1da177e4 | 442 | /* |
b229cf92 | 443 | * Treat constructs of the form "Store(LocalX,LocalX)" as noops when the |
1da177e4 LT |
444 | * Local is uninitialized. |
445 | */ | |
4be44fcd LB |
446 | if ((status == AE_AML_UNINITIALIZED_LOCAL) && |
447 | (walk_state->opcode == AML_STORE_OP) && | |
448 | (walk_state->operands[0]->common.type == | |
449 | ACPI_TYPE_LOCAL_REFERENCE) | |
450 | && (walk_state->operands[1]->common.type == | |
451 | ACPI_TYPE_LOCAL_REFERENCE) | |
1044f1f6 BM |
452 | && (walk_state->operands[0]->reference.class == |
453 | walk_state->operands[1]->reference.class) | |
454 | && (walk_state->operands[0]->reference.value == | |
455 | walk_state->operands[1]->reference.value)) { | |
1da177e4 | 456 | status = AE_OK; |
4be44fcd | 457 | } else { |
b8e4d893 BM |
458 | ACPI_EXCEPTION((AE_INFO, status, |
459 | "While resolving operands for [%s]", | |
460 | acpi_ps_get_opcode_name | |
461 | (walk_state->opcode))); | |
1da177e4 LT |
462 | } |
463 | } | |
464 | ||
465 | /* Always delete the argument objects and clear the operand stack */ | |
466 | ||
4be44fcd | 467 | acpi_ds_clear_operands(walk_state); |
1da177e4 LT |
468 | |
469 | /* | |
470 | * If a result object was returned from above, push it on the | |
471 | * current result stack | |
472 | */ | |
4be44fcd LB |
473 | if (ACPI_SUCCESS(status) && walk_state->result_obj) { |
474 | status = | |
475 | acpi_ds_result_push(walk_state->result_obj, | |
476 | walk_state); | |
1da177e4 | 477 | } |
1da177e4 LT |
478 | break; |
479 | ||
1da177e4 LT |
480 | default: |
481 | ||
482 | switch (op_type) { | |
4be44fcd | 483 | case AML_TYPE_CONTROL: /* Type 1 opcode, IF/ELSE/WHILE/NOOP */ |
1da177e4 LT |
484 | |
485 | /* 1 Operand, 0 external_result, 0 internal_result */ | |
486 | ||
4be44fcd | 487 | status = acpi_ds_exec_end_control_op(walk_state, op); |
1da177e4 | 488 | |
1da177e4 LT |
489 | break; |
490 | ||
1da177e4 | 491 | case AML_TYPE_METHOD_CALL: |
1da177e4 LT |
492 | /* |
493 | * If the method is referenced from within a package | |
494 | * declaration, it is not a invocation of the method, just | |
495 | * a reference to it. | |
496 | */ | |
497 | if ((op->asl.parent) && | |
4be44fcd LB |
498 | ((op->asl.parent->asl.aml_opcode == AML_PACKAGE_OP) |
499 | || (op->asl.parent->asl.aml_opcode == | |
500 | AML_VAR_PACKAGE_OP))) { | |
501 | ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH, | |
502 | "Method Reference in a Package, Op=%p\n", | |
503 | op)); | |
967440e3 | 504 | |
1fad8738 BM |
505 | op->common.node = (struct acpi_namespace_node *) |
506 | op->asl.value.arg->asl.node; | |
4be44fcd LB |
507 | acpi_ut_add_reference(op->asl.value.arg->asl. |
508 | node->object); | |
509 | return_ACPI_STATUS(AE_OK); | |
1da177e4 LT |
510 | } |
511 | ||
4be44fcd LB |
512 | ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH, |
513 | "Method invocation, Op=%p\n", op)); | |
1da177e4 LT |
514 | |
515 | /* | |
516 | * (AML_METHODCALL) Op->Asl.Value.Arg->Asl.Node contains | |
517 | * the method Node pointer | |
518 | */ | |
519 | /* next_op points to the op that holds the method name */ | |
520 | ||
521 | next_op = first_arg; | |
522 | ||
523 | /* next_op points to first argument op */ | |
524 | ||
525 | next_op = next_op->common.next; | |
526 | ||
527 | /* | |
528 | * Get the method's arguments and put them on the operand stack | |
529 | */ | |
4be44fcd LB |
530 | status = acpi_ds_create_operands(walk_state, next_op); |
531 | if (ACPI_FAILURE(status)) { | |
1da177e4 LT |
532 | break; |
533 | } | |
534 | ||
535 | /* | |
536 | * Since the operands will be passed to another control method, | |
537 | * we must resolve all local references here (Local variables, | |
538 | * arguments to *this* method, etc.) | |
539 | */ | |
4be44fcd LB |
540 | status = acpi_ds_resolve_operands(walk_state); |
541 | if (ACPI_FAILURE(status)) { | |
52fc0b02 | 542 | |
1da177e4 LT |
543 | /* On error, clear all resolved operands */ |
544 | ||
4be44fcd | 545 | acpi_ds_clear_operands(walk_state); |
1da177e4 LT |
546 | break; |
547 | } | |
548 | ||
549 | /* | |
550 | * Tell the walk loop to preempt this running method and | |
551 | * execute the new method | |
552 | */ | |
553 | status = AE_CTRL_TRANSFER; | |
554 | ||
555 | /* | |
556 | * Return now; we don't want to disturb anything, | |
557 | * especially the operand count! | |
558 | */ | |
4be44fcd | 559 | return_ACPI_STATUS(status); |
1da177e4 LT |
560 | |
561 | case AML_TYPE_CREATE_FIELD: | |
562 | ||
4be44fcd | 563 | ACPI_DEBUG_PRINT((ACPI_DB_EXEC, |
b229cf92 | 564 | "Executing CreateField Buffer/Index Op=%p\n", |
4be44fcd | 565 | op)); |
1da177e4 | 566 | |
4be44fcd LB |
567 | status = acpi_ds_load2_end_op(walk_state); |
568 | if (ACPI_FAILURE(status)) { | |
1da177e4 LT |
569 | break; |
570 | } | |
571 | ||
4be44fcd LB |
572 | status = |
573 | acpi_ds_eval_buffer_field_operands(walk_state, op); | |
1da177e4 LT |
574 | break; |
575 | ||
1da177e4 LT |
576 | case AML_TYPE_CREATE_OBJECT: |
577 | ||
4be44fcd | 578 | ACPI_DEBUG_PRINT((ACPI_DB_EXEC, |
b229cf92 | 579 | "Executing CreateObject (Buffer/Package) Op=%p\n", |
4be44fcd | 580 | op)); |
1da177e4 LT |
581 | |
582 | switch (op->common.parent->common.aml_opcode) { | |
583 | case AML_NAME_OP: | |
1da177e4 | 584 | /* |
44f6c012 RM |
585 | * Put the Node on the object stack (Contains the ACPI Name |
586 | * of this object) | |
1da177e4 | 587 | */ |
1fad8738 BM |
588 | walk_state->operands[0] = (void *) |
589 | op->common.parent->common.node; | |
1da177e4 LT |
590 | walk_state->num_operands = 1; |
591 | ||
4be44fcd LB |
592 | status = acpi_ds_create_node(walk_state, |
593 | op->common.parent-> | |
594 | common.node, | |
595 | op->common.parent); | |
596 | if (ACPI_FAILURE(status)) { | |
1da177e4 LT |
597 | break; |
598 | } | |
599 | ||
600 | /* Fall through */ | |
601 | /*lint -fallthrough */ | |
602 | ||
603 | case AML_INT_EVAL_SUBTREE_OP: | |
604 | ||
4be44fcd LB |
605 | status = |
606 | acpi_ds_eval_data_object_operands | |
607 | (walk_state, op, | |
608 | acpi_ns_get_attached_object(op->common. | |
609 | parent->common. | |
610 | node)); | |
1da177e4 LT |
611 | break; |
612 | ||
613 | default: | |
614 | ||
4be44fcd LB |
615 | status = |
616 | acpi_ds_eval_data_object_operands | |
617 | (walk_state, op, NULL); | |
1da177e4 LT |
618 | break; |
619 | } | |
620 | ||
1da177e4 LT |
621 | /* |
622 | * If a result object was returned from above, push it on the | |
623 | * current result stack | |
624 | */ | |
44f6c012 | 625 | if (walk_state->result_obj) { |
4be44fcd LB |
626 | status = |
627 | acpi_ds_result_push(walk_state->result_obj, | |
628 | walk_state); | |
1da177e4 LT |
629 | } |
630 | break; | |
631 | ||
1da177e4 LT |
632 | case AML_TYPE_NAMED_FIELD: |
633 | case AML_TYPE_NAMED_COMPLEX: | |
634 | case AML_TYPE_NAMED_SIMPLE: | |
635 | case AML_TYPE_NAMED_NO_OBJ: | |
636 | ||
4be44fcd LB |
637 | status = acpi_ds_load2_end_op(walk_state); |
638 | if (ACPI_FAILURE(status)) { | |
1da177e4 LT |
639 | break; |
640 | } | |
641 | ||
642 | if (op->common.aml_opcode == AML_REGION_OP) { | |
4be44fcd | 643 | ACPI_DEBUG_PRINT((ACPI_DB_EXEC, |
b229cf92 | 644 | "Executing OpRegion Address/Length Op=%p\n", |
4be44fcd LB |
645 | op)); |
646 | ||
647 | status = | |
648 | acpi_ds_eval_region_operands(walk_state, | |
649 | op); | |
650 | if (ACPI_FAILURE(status)) { | |
1da177e4 LT |
651 | break; |
652 | } | |
941f48bb LM |
653 | } else if (op->common.aml_opcode == AML_DATA_REGION_OP) { |
654 | ACPI_DEBUG_PRINT((ACPI_DB_EXEC, | |
655 | "Executing DataTableRegion Strings Op=%p\n", | |
656 | op)); | |
657 | ||
658 | status = | |
659 | acpi_ds_eval_table_region_operands | |
660 | (walk_state, op); | |
661 | if (ACPI_FAILURE(status)) { | |
662 | break; | |
663 | } | |
ef805d95 LM |
664 | } else if (op->common.aml_opcode == AML_BANK_FIELD_OP) { |
665 | ACPI_DEBUG_PRINT((ACPI_DB_EXEC, | |
666 | "Executing BankField Op=%p\n", | |
667 | op)); | |
668 | ||
669 | status = | |
670 | acpi_ds_eval_bank_field_operands(walk_state, | |
671 | op); | |
672 | if (ACPI_FAILURE(status)) { | |
673 | break; | |
674 | } | |
1da177e4 | 675 | } |
1da177e4 LT |
676 | break; |
677 | ||
1da177e4 LT |
678 | case AML_TYPE_UNDEFINED: |
679 | ||
b8e4d893 BM |
680 | ACPI_ERROR((AE_INFO, |
681 | "Undefined opcode type Op=%p", op)); | |
4be44fcd | 682 | return_ACPI_STATUS(AE_NOT_IMPLEMENTED); |
1da177e4 LT |
683 | |
684 | case AML_TYPE_BOGUS: | |
685 | ||
4be44fcd LB |
686 | ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH, |
687 | "Internal opcode=%X type Op=%p\n", | |
688 | walk_state->opcode, op)); | |
1da177e4 LT |
689 | break; |
690 | ||
1da177e4 LT |
691 | default: |
692 | ||
b8e4d893 | 693 | ACPI_ERROR((AE_INFO, |
1fad8738 BM |
694 | "Unimplemented opcode, class=0x%X " |
695 | "type=0x%X Opcode=0x%X Op=%p", | |
b8e4d893 BM |
696 | op_class, op_type, op->common.aml_opcode, |
697 | op)); | |
1da177e4 LT |
698 | |
699 | status = AE_NOT_IMPLEMENTED; | |
700 | break; | |
701 | } | |
702 | } | |
703 | ||
704 | /* | |
705 | * ACPI 2.0 support for 64-bit integers: Truncate numeric | |
706 | * result value if we are executing from a 32-bit ACPI table | |
707 | */ | |
ef42e53f | 708 | (void)acpi_ex_truncate_for32bit_table(walk_state->result_obj); |
1da177e4 LT |
709 | |
710 | /* | |
711 | * Check if we just completed the evaluation of a | |
712 | * conditional predicate | |
713 | */ | |
4be44fcd LB |
714 | if ((ACPI_SUCCESS(status)) && |
715 | (walk_state->control_state) && | |
716 | (walk_state->control_state->common.state == | |
717 | ACPI_CONTROL_PREDICATE_EXECUTING) && | |
718 | (walk_state->control_state->control.predicate_op == op)) { | |
719 | status = | |
720 | acpi_ds_get_predicate_value(walk_state, | |
721 | walk_state->result_obj); | |
1da177e4 LT |
722 | walk_state->result_obj = NULL; |
723 | } | |
724 | ||
10622bf8 | 725 | cleanup: |
1da177e4 | 726 | |
1da177e4 | 727 | if (walk_state->result_obj) { |
52fc0b02 | 728 | |
1da177e4 LT |
729 | /* Break to debugger to display result */ |
730 | ||
8a2a2501 LZ |
731 | acpi_db_display_result_object(walk_state->result_obj, |
732 | walk_state); | |
1da177e4 LT |
733 | |
734 | /* | |
735 | * Delete the result op if and only if: | |
736 | * Parent will not use the result -- such as any | |
737 | * non-nested type2 op in a method (parent will be method) | |
738 | */ | |
4be44fcd LB |
739 | acpi_ds_delete_result_if_not_used(op, walk_state->result_obj, |
740 | walk_state); | |
1da177e4 | 741 | } |
1da177e4 LT |
742 | #ifdef _UNDER_DEVELOPMENT |
743 | ||
744 | if (walk_state->parser_state.aml == walk_state->parser_state.aml_end) { | |
4be44fcd | 745 | acpi_db_method_end(walk_state); |
1da177e4 LT |
746 | } |
747 | #endif | |
748 | ||
defba1d8 | 749 | /* Invoke exception handler on error */ |
1da177e4 | 750 | |
4be44fcd | 751 | if (ACPI_FAILURE(status)) { |
defba1d8 | 752 | status = acpi_ds_method_error(status, walk_state); |
1da177e4 | 753 | } |
1da177e4 | 754 | |
defba1d8 BM |
755 | /* Always clear the object stack */ |
756 | ||
757 | walk_state->num_operands = 0; | |
4be44fcd | 758 | return_ACPI_STATUS(status); |
1da177e4 | 759 | } |