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1da177e4 LT |
1 | /****************************************************************************** |
2 | * | |
3 | * Module Name: dswexec - Dispatcher method execution callbacks; | |
4 | * dispatch to interpreter. | |
5 | * | |
6 | *****************************************************************************/ | |
7 | ||
8 | /* | |
c8100dc4 | 9 | * Copyright (C) 2000 - 2016, 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 | */ | |
4be44fcd LB |
136 | status = acpi_ex_convert_to_integer(obj_desc, &local_obj_desc, 16); |
137 | if (ACPI_FAILURE(status)) { | |
1da177e4 LT |
138 | goto cleanup; |
139 | } | |
140 | ||
3371c19c | 141 | if (local_obj_desc->common.type != ACPI_TYPE_INTEGER) { |
b8e4d893 | 142 | ACPI_ERROR((AE_INFO, |
f6a22b0b | 143 | "Bad predicate (not an integer) ObjDesc=%p State=%p Type=0x%X", |
3371c19c | 144 | obj_desc, walk_state, obj_desc->common.type)); |
1da177e4 LT |
145 | |
146 | status = AE_AML_OPERAND_TYPE; | |
147 | goto cleanup; | |
148 | } | |
149 | ||
150 | /* Truncate the predicate to 32-bits if necessary */ | |
151 | ||
ef42e53f | 152 | (void)acpi_ex_truncate_for32bit_table(local_obj_desc); |
1da177e4 LT |
153 | |
154 | /* | |
155 | * Save the result of the predicate evaluation on | |
156 | * the control stack | |
157 | */ | |
158 | if (local_obj_desc->integer.value) { | |
159 | walk_state->control_state->common.value = TRUE; | |
4be44fcd | 160 | } else { |
1da177e4 LT |
161 | /* |
162 | * Predicate is FALSE, we will just toss the | |
163 | * rest of the package | |
164 | */ | |
165 | walk_state->control_state->common.value = FALSE; | |
166 | status = AE_CTRL_FALSE; | |
167 | } | |
168 | ||
b9d1312a LM |
169 | /* Predicate can be used for an implicit return value */ |
170 | ||
171 | (void)acpi_ds_do_implicit_return(local_obj_desc, walk_state, TRUE); | |
172 | ||
10622bf8 | 173 | cleanup: |
1da177e4 | 174 | |
1fad8738 BM |
175 | ACPI_DEBUG_PRINT((ACPI_DB_EXEC, |
176 | "Completed a predicate eval=%X Op=%p\n", | |
4be44fcd LB |
177 | walk_state->control_state->common.value, |
178 | walk_state->op)); | |
1da177e4 | 179 | |
4be44fcd | 180 | /* Break to debugger to display result */ |
1da177e4 | 181 | |
8a2a2501 | 182 | acpi_db_display_result_object(local_obj_desc, walk_state); |
1da177e4 LT |
183 | |
184 | /* | |
185 | * Delete the predicate result object (we know that | |
186 | * we don't need it anymore) | |
187 | */ | |
188 | if (local_obj_desc != obj_desc) { | |
4be44fcd | 189 | acpi_ut_remove_reference(local_obj_desc); |
1da177e4 | 190 | } |
4be44fcd | 191 | acpi_ut_remove_reference(obj_desc); |
1da177e4 LT |
192 | |
193 | walk_state->control_state->common.state = ACPI_CONTROL_NORMAL; | |
4be44fcd | 194 | return_ACPI_STATUS(status); |
1da177e4 LT |
195 | } |
196 | ||
1da177e4 LT |
197 | /***************************************************************************** |
198 | * | |
199 | * FUNCTION: acpi_ds_exec_begin_op | |
200 | * | |
201 | * PARAMETERS: walk_state - Current state of the parse tree walk | |
44f6c012 | 202 | * out_op - Where to return op if a new one is created |
1da177e4 LT |
203 | * |
204 | * RETURN: Status | |
205 | * | |
206 | * DESCRIPTION: Descending callback used during the execution of control | |
73a3090a | 207 | * methods. This is where most operators and operands are |
1da177e4 LT |
208 | * dispatched to the interpreter. |
209 | * | |
210 | ****************************************************************************/ | |
211 | ||
212 | acpi_status | |
4be44fcd LB |
213 | acpi_ds_exec_begin_op(struct acpi_walk_state *walk_state, |
214 | union acpi_parse_object **out_op) | |
1da177e4 | 215 | { |
4be44fcd LB |
216 | union acpi_parse_object *op; |
217 | acpi_status status = AE_OK; | |
218 | u32 opcode_class; | |
1da177e4 | 219 | |
b229cf92 | 220 | ACPI_FUNCTION_TRACE_PTR(ds_exec_begin_op, walk_state); |
1da177e4 LT |
221 | |
222 | op = walk_state->op; | |
223 | if (!op) { | |
4be44fcd LB |
224 | status = acpi_ds_load2_begin_op(walk_state, out_op); |
225 | if (ACPI_FAILURE(status)) { | |
867c9aec | 226 | goto error_exit; |
1da177e4 LT |
227 | } |
228 | ||
229 | op = *out_op; | |
230 | walk_state->op = op; | |
231 | walk_state->opcode = op->common.aml_opcode; | |
4be44fcd LB |
232 | walk_state->op_info = |
233 | 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, | |
237 | "(%s) Popping scope for Op %p\n", | |
238 | acpi_ut_get_type_name(walk_state-> | |
239 | op_info-> | |
240 | object_type), | |
241 | op)); | |
242 | ||
243 | status = acpi_ds_scope_stack_pop(walk_state); | |
244 | if (ACPI_FAILURE(status)) { | |
867c9aec | 245 | goto error_exit; |
1da177e4 LT |
246 | } |
247 | } | |
248 | } | |
249 | ||
250 | if (op == walk_state->origin) { | |
251 | if (out_op) { | |
252 | *out_op = op; | |
253 | } | |
254 | ||
4be44fcd | 255 | return_ACPI_STATUS(AE_OK); |
1da177e4 LT |
256 | } |
257 | ||
258 | /* | |
259 | * If the previous opcode was a conditional, this opcode | |
260 | * must be the beginning of the associated predicate. | |
261 | * Save this knowledge in the current scope descriptor | |
262 | */ | |
263 | if ((walk_state->control_state) && | |
4be44fcd LB |
264 | (walk_state->control_state->common.state == |
265 | ACPI_CONTROL_CONDITIONAL_EXECUTING)) { | |
266 | ACPI_DEBUG_PRINT((ACPI_DB_EXEC, | |
1fad8738 BM |
267 | "Exec predicate Op=%p State=%p\n", |
268 | op, walk_state)); | |
1da177e4 | 269 | |
4be44fcd LB |
270 | walk_state->control_state->common.state = |
271 | ACPI_CONTROL_PREDICATE_EXECUTING; | |
1da177e4 LT |
272 | |
273 | /* Save start of predicate */ | |
274 | ||
275 | walk_state->control_state->control.predicate_op = op; | |
276 | } | |
277 | ||
1da177e4 LT |
278 | opcode_class = walk_state->op_info->class; |
279 | ||
280 | /* We want to send namepaths to the load code */ | |
281 | ||
282 | if (op->common.aml_opcode == AML_INT_NAMEPATH_OP) { | |
283 | opcode_class = AML_CLASS_NAMED_OBJECT; | |
284 | } | |
285 | ||
286 | /* | |
287 | * Handle the opcode based upon the opcode type | |
288 | */ | |
289 | switch (opcode_class) { | |
290 | case AML_CLASS_CONTROL: | |
291 | ||
4be44fcd | 292 | status = acpi_ds_exec_begin_control_op(walk_state, op); |
1da177e4 LT |
293 | break; |
294 | ||
1da177e4 LT |
295 | case AML_CLASS_NAMED_OBJECT: |
296 | ||
4119532c | 297 | if (walk_state->walk_type & ACPI_WALK_METHOD) { |
1da177e4 | 298 | /* |
44f6c012 | 299 | * Found a named object declaration during method execution; |
73a3090a | 300 | * we must enter this object into the namespace. The created |
44f6c012 RM |
301 | * object is temporary and will be deleted upon completion of |
302 | * the execution of this method. | |
8df3fc98 BM |
303 | * |
304 | * Note 10/2010: Except for the Scope() op. This opcode does | |
305 | * not actually create a new object, it refers to an existing | |
306 | * object. However, for Scope(), we want to indeed open a | |
307 | * new scope. | |
1da177e4 | 308 | */ |
8df3fc98 BM |
309 | if (op->common.aml_opcode != AML_SCOPE_OP) { |
310 | status = | |
311 | acpi_ds_load2_begin_op(walk_state, NULL); | |
312 | } else { | |
313 | status = | |
314 | acpi_ds_scope_stack_push(op->named.node, | |
315 | op->named.node-> | |
316 | type, walk_state); | |
317 | if (ACPI_FAILURE(status)) { | |
318 | return_ACPI_STATUS(status); | |
319 | } | |
320 | } | |
1da177e4 | 321 | } |
1da177e4 LT |
322 | break; |
323 | ||
1da177e4 LT |
324 | case AML_CLASS_EXECUTE: |
325 | case AML_CLASS_CREATE: | |
773069d4 | 326 | |
1da177e4 LT |
327 | break; |
328 | ||
1da177e4 | 329 | default: |
1d1ea1b7 | 330 | |
1da177e4 LT |
331 | break; |
332 | } | |
333 | ||
334 | /* Nothing to do here during method execution */ | |
335 | ||
4be44fcd | 336 | return_ACPI_STATUS(status); |
867c9aec | 337 | |
10622bf8 | 338 | error_exit: |
867c9aec BM |
339 | status = acpi_ds_method_error(status, walk_state); |
340 | return_ACPI_STATUS(status); | |
1da177e4 LT |
341 | } |
342 | ||
1da177e4 LT |
343 | /***************************************************************************** |
344 | * | |
345 | * FUNCTION: acpi_ds_exec_end_op | |
346 | * | |
347 | * PARAMETERS: walk_state - Current state of the parse tree walk | |
1da177e4 LT |
348 | * |
349 | * RETURN: Status | |
350 | * | |
351 | * DESCRIPTION: Ascending callback used during the execution of control | |
73a3090a | 352 | * methods. The only thing we really need to do here is to |
1da177e4 LT |
353 | * notice the beginning of IF, ELSE, and WHILE blocks. |
354 | * | |
355 | ****************************************************************************/ | |
356 | ||
4be44fcd | 357 | acpi_status acpi_ds_exec_end_op(struct acpi_walk_state *walk_state) |
1da177e4 | 358 | { |
4be44fcd LB |
359 | union acpi_parse_object *op; |
360 | acpi_status status = AE_OK; | |
361 | u32 op_type; | |
362 | u32 op_class; | |
363 | union acpi_parse_object *next_op; | |
364 | union acpi_parse_object *first_arg; | |
1da177e4 | 365 | |
b229cf92 | 366 | ACPI_FUNCTION_TRACE_PTR(ds_exec_end_op, walk_state); |
1da177e4 | 367 | |
4be44fcd | 368 | op = walk_state->op; |
1da177e4 LT |
369 | op_type = walk_state->op_info->type; |
370 | op_class = walk_state->op_info->class; | |
371 | ||
372 | if (op_class == AML_CLASS_UNKNOWN) { | |
f6a22b0b | 373 | ACPI_ERROR((AE_INFO, "Unknown opcode 0x%X", |
b8e4d893 | 374 | op->common.aml_opcode)); |
4be44fcd | 375 | return_ACPI_STATUS(AE_NOT_IMPLEMENTED); |
1da177e4 LT |
376 | } |
377 | ||
378 | first_arg = op->common.value.arg; | |
379 | ||
380 | /* Init the walk state */ | |
381 | ||
382 | walk_state->num_operands = 0; | |
773069d4 | 383 | walk_state->operand_index = 0; |
1da177e4 LT |
384 | walk_state->return_desc = NULL; |
385 | walk_state->result_obj = NULL; | |
386 | ||
387 | /* Call debugger for single step support (DEBUG build only) */ | |
388 | ||
8a2a2501 LZ |
389 | status = acpi_db_single_step(walk_state, op, op_class); |
390 | if (ACPI_FAILURE(status)) { | |
391 | return_ACPI_STATUS(status); | |
392 | } | |
1da177e4 LT |
393 | |
394 | /* Decode the Opcode Class */ | |
395 | ||
396 | switch (op_class) { | |
4e3156b1 BM |
397 | case AML_CLASS_ARGUMENT: /* Constants, literals, etc. */ |
398 | ||
399 | if (walk_state->opcode == AML_INT_NAMEPATH_OP) { | |
400 | status = acpi_ds_evaluate_name_path(walk_state); | |
401 | if (ACPI_FAILURE(status)) { | |
402 | goto cleanup; | |
403 | } | |
404 | } | |
1da177e4 LT |
405 | break; |
406 | ||
4e3156b1 | 407 | case AML_CLASS_EXECUTE: /* Most operators with arguments */ |
1da177e4 LT |
408 | |
409 | /* Build resolved operand stack */ | |
410 | ||
4be44fcd LB |
411 | status = acpi_ds_create_operands(walk_state, first_arg); |
412 | if (ACPI_FAILURE(status)) { | |
1da177e4 LT |
413 | goto cleanup; |
414 | } | |
415 | ||
1da177e4 LT |
416 | /* |
417 | * All opcodes require operand resolution, with the only exceptions | |
418 | * being the object_type and size_of operators. | |
419 | */ | |
420 | if (!(walk_state->op_info->flags & AML_NO_OPERAND_RESOLVE)) { | |
52fc0b02 | 421 | |
1da177e4 LT |
422 | /* Resolve all operands */ |
423 | ||
4be44fcd LB |
424 | status = acpi_ex_resolve_operands(walk_state->opcode, |
425 | &(walk_state-> | |
426 | operands | |
427 | [walk_state-> | |
428 | num_operands - 1]), | |
429 | walk_state); | |
1da177e4 LT |
430 | } |
431 | ||
4be44fcd | 432 | if (ACPI_SUCCESS(status)) { |
1da177e4 LT |
433 | /* |
434 | * Dispatch the request to the appropriate interpreter handler | |
73a3090a | 435 | * routine. There is one routine per opcode "type" based upon the |
1da177e4 LT |
436 | * number of opcode arguments and return type. |
437 | */ | |
4be44fcd LB |
438 | status = |
439 | acpi_gbl_op_type_dispatch[op_type] (walk_state); | |
440 | } else { | |
1da177e4 | 441 | /* |
b229cf92 | 442 | * Treat constructs of the form "Store(LocalX,LocalX)" as noops when the |
1da177e4 LT |
443 | * Local is uninitialized. |
444 | */ | |
4be44fcd LB |
445 | if ((status == AE_AML_UNINITIALIZED_LOCAL) && |
446 | (walk_state->opcode == AML_STORE_OP) && | |
447 | (walk_state->operands[0]->common.type == | |
448 | ACPI_TYPE_LOCAL_REFERENCE) | |
449 | && (walk_state->operands[1]->common.type == | |
450 | ACPI_TYPE_LOCAL_REFERENCE) | |
1044f1f6 BM |
451 | && (walk_state->operands[0]->reference.class == |
452 | walk_state->operands[1]->reference.class) | |
453 | && (walk_state->operands[0]->reference.value == | |
454 | walk_state->operands[1]->reference.value)) { | |
1da177e4 | 455 | status = AE_OK; |
4be44fcd | 456 | } else { |
b8e4d893 BM |
457 | ACPI_EXCEPTION((AE_INFO, status, |
458 | "While resolving operands for [%s]", | |
459 | acpi_ps_get_opcode_name | |
460 | (walk_state->opcode))); | |
1da177e4 LT |
461 | } |
462 | } | |
463 | ||
464 | /* Always delete the argument objects and clear the operand stack */ | |
465 | ||
4be44fcd | 466 | acpi_ds_clear_operands(walk_state); |
1da177e4 LT |
467 | |
468 | /* | |
469 | * If a result object was returned from above, push it on the | |
470 | * current result stack | |
471 | */ | |
4be44fcd LB |
472 | if (ACPI_SUCCESS(status) && walk_state->result_obj) { |
473 | status = | |
474 | acpi_ds_result_push(walk_state->result_obj, | |
475 | walk_state); | |
1da177e4 | 476 | } |
1da177e4 LT |
477 | break; |
478 | ||
1da177e4 LT |
479 | default: |
480 | ||
481 | switch (op_type) { | |
4be44fcd | 482 | case AML_TYPE_CONTROL: /* Type 1 opcode, IF/ELSE/WHILE/NOOP */ |
1da177e4 LT |
483 | |
484 | /* 1 Operand, 0 external_result, 0 internal_result */ | |
485 | ||
4be44fcd | 486 | status = acpi_ds_exec_end_control_op(walk_state, op); |
1da177e4 | 487 | |
1da177e4 LT |
488 | break; |
489 | ||
1da177e4 | 490 | case AML_TYPE_METHOD_CALL: |
1da177e4 LT |
491 | /* |
492 | * If the method is referenced from within a package | |
493 | * declaration, it is not a invocation of the method, just | |
494 | * a reference to it. | |
495 | */ | |
496 | if ((op->asl.parent) && | |
4be44fcd LB |
497 | ((op->asl.parent->asl.aml_opcode == AML_PACKAGE_OP) |
498 | || (op->asl.parent->asl.aml_opcode == | |
499 | AML_VAR_PACKAGE_OP))) { | |
500 | ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH, | |
501 | "Method Reference in a Package, Op=%p\n", | |
502 | op)); | |
967440e3 | 503 | |
1fad8738 BM |
504 | op->common.node = (struct acpi_namespace_node *) |
505 | op->asl.value.arg->asl.node; | |
4be44fcd LB |
506 | acpi_ut_add_reference(op->asl.value.arg->asl. |
507 | node->object); | |
508 | return_ACPI_STATUS(AE_OK); | |
1da177e4 LT |
509 | } |
510 | ||
4be44fcd LB |
511 | ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH, |
512 | "Method invocation, Op=%p\n", op)); | |
1da177e4 LT |
513 | |
514 | /* | |
515 | * (AML_METHODCALL) Op->Asl.Value.Arg->Asl.Node contains | |
516 | * the method Node pointer | |
517 | */ | |
518 | /* next_op points to the op that holds the method name */ | |
519 | ||
520 | next_op = first_arg; | |
521 | ||
522 | /* next_op points to first argument op */ | |
523 | ||
524 | next_op = next_op->common.next; | |
525 | ||
526 | /* | |
527 | * Get the method's arguments and put them on the operand stack | |
528 | */ | |
4be44fcd LB |
529 | status = acpi_ds_create_operands(walk_state, next_op); |
530 | if (ACPI_FAILURE(status)) { | |
1da177e4 LT |
531 | break; |
532 | } | |
533 | ||
534 | /* | |
535 | * Since the operands will be passed to another control method, | |
536 | * we must resolve all local references here (Local variables, | |
537 | * arguments to *this* method, etc.) | |
538 | */ | |
4be44fcd LB |
539 | status = acpi_ds_resolve_operands(walk_state); |
540 | if (ACPI_FAILURE(status)) { | |
52fc0b02 | 541 | |
1da177e4 LT |
542 | /* On error, clear all resolved operands */ |
543 | ||
4be44fcd | 544 | acpi_ds_clear_operands(walk_state); |
1da177e4 LT |
545 | break; |
546 | } | |
547 | ||
548 | /* | |
549 | * Tell the walk loop to preempt this running method and | |
550 | * execute the new method | |
551 | */ | |
552 | status = AE_CTRL_TRANSFER; | |
553 | ||
554 | /* | |
555 | * Return now; we don't want to disturb anything, | |
556 | * especially the operand count! | |
557 | */ | |
4be44fcd | 558 | return_ACPI_STATUS(status); |
1da177e4 LT |
559 | |
560 | case AML_TYPE_CREATE_FIELD: | |
561 | ||
4be44fcd | 562 | ACPI_DEBUG_PRINT((ACPI_DB_EXEC, |
b229cf92 | 563 | "Executing CreateField Buffer/Index Op=%p\n", |
4be44fcd | 564 | op)); |
1da177e4 | 565 | |
4be44fcd LB |
566 | status = acpi_ds_load2_end_op(walk_state); |
567 | if (ACPI_FAILURE(status)) { | |
1da177e4 LT |
568 | break; |
569 | } | |
570 | ||
4be44fcd LB |
571 | status = |
572 | acpi_ds_eval_buffer_field_operands(walk_state, op); | |
1da177e4 LT |
573 | break; |
574 | ||
1da177e4 LT |
575 | case AML_TYPE_CREATE_OBJECT: |
576 | ||
4be44fcd | 577 | ACPI_DEBUG_PRINT((ACPI_DB_EXEC, |
b229cf92 | 578 | "Executing CreateObject (Buffer/Package) Op=%p\n", |
4be44fcd | 579 | op)); |
1da177e4 LT |
580 | |
581 | switch (op->common.parent->common.aml_opcode) { | |
582 | case AML_NAME_OP: | |
1da177e4 | 583 | /* |
44f6c012 RM |
584 | * Put the Node on the object stack (Contains the ACPI Name |
585 | * of this object) | |
1da177e4 | 586 | */ |
1fad8738 BM |
587 | walk_state->operands[0] = (void *) |
588 | op->common.parent->common.node; | |
1da177e4 LT |
589 | walk_state->num_operands = 1; |
590 | ||
4be44fcd LB |
591 | status = acpi_ds_create_node(walk_state, |
592 | op->common.parent-> | |
593 | common.node, | |
594 | op->common.parent); | |
595 | if (ACPI_FAILURE(status)) { | |
1da177e4 LT |
596 | break; |
597 | } | |
598 | ||
599 | /* Fall through */ | |
600 | /*lint -fallthrough */ | |
601 | ||
602 | case AML_INT_EVAL_SUBTREE_OP: | |
603 | ||
4be44fcd LB |
604 | status = |
605 | acpi_ds_eval_data_object_operands | |
606 | (walk_state, op, | |
607 | acpi_ns_get_attached_object(op->common. | |
608 | parent->common. | |
609 | node)); | |
1da177e4 LT |
610 | break; |
611 | ||
612 | default: | |
613 | ||
4be44fcd LB |
614 | status = |
615 | acpi_ds_eval_data_object_operands | |
616 | (walk_state, op, NULL); | |
1da177e4 LT |
617 | break; |
618 | } | |
619 | ||
1da177e4 LT |
620 | /* |
621 | * If a result object was returned from above, push it on the | |
622 | * current result stack | |
623 | */ | |
44f6c012 | 624 | if (walk_state->result_obj) { |
4be44fcd LB |
625 | status = |
626 | acpi_ds_result_push(walk_state->result_obj, | |
627 | walk_state); | |
1da177e4 LT |
628 | } |
629 | break; | |
630 | ||
1da177e4 LT |
631 | case AML_TYPE_NAMED_FIELD: |
632 | case AML_TYPE_NAMED_COMPLEX: | |
633 | case AML_TYPE_NAMED_SIMPLE: | |
634 | case AML_TYPE_NAMED_NO_OBJ: | |
635 | ||
4be44fcd LB |
636 | status = acpi_ds_load2_end_op(walk_state); |
637 | if (ACPI_FAILURE(status)) { | |
1da177e4 LT |
638 | break; |
639 | } | |
640 | ||
641 | if (op->common.aml_opcode == AML_REGION_OP) { | |
4be44fcd | 642 | ACPI_DEBUG_PRINT((ACPI_DB_EXEC, |
b229cf92 | 643 | "Executing OpRegion Address/Length Op=%p\n", |
4be44fcd LB |
644 | op)); |
645 | ||
646 | status = | |
647 | acpi_ds_eval_region_operands(walk_state, | |
648 | op); | |
649 | if (ACPI_FAILURE(status)) { | |
1da177e4 LT |
650 | break; |
651 | } | |
941f48bb LM |
652 | } else if (op->common.aml_opcode == AML_DATA_REGION_OP) { |
653 | ACPI_DEBUG_PRINT((ACPI_DB_EXEC, | |
654 | "Executing DataTableRegion Strings Op=%p\n", | |
655 | op)); | |
656 | ||
657 | status = | |
658 | acpi_ds_eval_table_region_operands | |
659 | (walk_state, op); | |
660 | if (ACPI_FAILURE(status)) { | |
661 | break; | |
662 | } | |
ef805d95 LM |
663 | } else if (op->common.aml_opcode == AML_BANK_FIELD_OP) { |
664 | ACPI_DEBUG_PRINT((ACPI_DB_EXEC, | |
665 | "Executing BankField Op=%p\n", | |
666 | op)); | |
667 | ||
668 | status = | |
669 | acpi_ds_eval_bank_field_operands(walk_state, | |
670 | op); | |
671 | if (ACPI_FAILURE(status)) { | |
672 | break; | |
673 | } | |
1da177e4 | 674 | } |
1da177e4 LT |
675 | break; |
676 | ||
1da177e4 LT |
677 | case AML_TYPE_UNDEFINED: |
678 | ||
b8e4d893 BM |
679 | ACPI_ERROR((AE_INFO, |
680 | "Undefined opcode type Op=%p", op)); | |
4be44fcd | 681 | return_ACPI_STATUS(AE_NOT_IMPLEMENTED); |
1da177e4 LT |
682 | |
683 | case AML_TYPE_BOGUS: | |
684 | ||
4be44fcd LB |
685 | ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH, |
686 | "Internal opcode=%X type Op=%p\n", | |
687 | walk_state->opcode, op)); | |
1da177e4 LT |
688 | break; |
689 | ||
1da177e4 LT |
690 | default: |
691 | ||
b8e4d893 | 692 | ACPI_ERROR((AE_INFO, |
1fad8738 BM |
693 | "Unimplemented opcode, class=0x%X " |
694 | "type=0x%X Opcode=0x%X Op=%p", | |
b8e4d893 BM |
695 | op_class, op_type, op->common.aml_opcode, |
696 | op)); | |
1da177e4 LT |
697 | |
698 | status = AE_NOT_IMPLEMENTED; | |
699 | break; | |
700 | } | |
701 | } | |
702 | ||
703 | /* | |
704 | * ACPI 2.0 support for 64-bit integers: Truncate numeric | |
705 | * result value if we are executing from a 32-bit ACPI table | |
706 | */ | |
ef42e53f | 707 | (void)acpi_ex_truncate_for32bit_table(walk_state->result_obj); |
1da177e4 LT |
708 | |
709 | /* | |
710 | * Check if we just completed the evaluation of a | |
711 | * conditional predicate | |
712 | */ | |
4be44fcd LB |
713 | if ((ACPI_SUCCESS(status)) && |
714 | (walk_state->control_state) && | |
715 | (walk_state->control_state->common.state == | |
716 | ACPI_CONTROL_PREDICATE_EXECUTING) && | |
717 | (walk_state->control_state->control.predicate_op == op)) { | |
718 | status = | |
719 | acpi_ds_get_predicate_value(walk_state, | |
720 | walk_state->result_obj); | |
1da177e4 LT |
721 | walk_state->result_obj = NULL; |
722 | } | |
723 | ||
10622bf8 | 724 | cleanup: |
1da177e4 | 725 | |
1da177e4 | 726 | if (walk_state->result_obj) { |
52fc0b02 | 727 | |
1da177e4 LT |
728 | /* Break to debugger to display result */ |
729 | ||
8a2a2501 LZ |
730 | acpi_db_display_result_object(walk_state->result_obj, |
731 | walk_state); | |
1da177e4 LT |
732 | |
733 | /* | |
734 | * Delete the result op if and only if: | |
735 | * Parent will not use the result -- such as any | |
736 | * non-nested type2 op in a method (parent will be method) | |
737 | */ | |
4be44fcd LB |
738 | acpi_ds_delete_result_if_not_used(op, walk_state->result_obj, |
739 | walk_state); | |
1da177e4 | 740 | } |
1da177e4 LT |
741 | #ifdef _UNDER_DEVELOPMENT |
742 | ||
743 | if (walk_state->parser_state.aml == walk_state->parser_state.aml_end) { | |
4be44fcd | 744 | acpi_db_method_end(walk_state); |
1da177e4 LT |
745 | } |
746 | #endif | |
747 | ||
defba1d8 | 748 | /* Invoke exception handler on error */ |
1da177e4 | 749 | |
4be44fcd | 750 | if (ACPI_FAILURE(status)) { |
defba1d8 | 751 | status = acpi_ds_method_error(status, walk_state); |
1da177e4 | 752 | } |
1da177e4 | 753 | |
defba1d8 BM |
754 | /* Always clear the object stack */ |
755 | ||
756 | walk_state->num_operands = 0; | |
4be44fcd | 757 | return_ACPI_STATUS(status); |
1da177e4 | 758 | } |