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1da177e4 LT |
1 | /****************************************************************************** |
2 | * | |
3 | * Module Name: dswexec - Dispatcher method execution callbacks; | |
4 | * dispatch to interpreter. | |
5 | * | |
6 | *****************************************************************************/ | |
7 | ||
8 | /* | |
4a90c7e8 | 9 | * Copyright (C) 2000 - 2006, R. Byron Moore |
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 LT |
45 | #include <acpi/acpi.h> |
46 | #include <acpi/acparser.h> | |
47 | #include <acpi/amlcode.h> | |
48 | #include <acpi/acdispat.h> | |
49 | #include <acpi/acinterp.h> | |
50 | #include <acpi/acnamesp.h> | |
51 | #include <acpi/acdebug.h> | |
52 | #include <acpi/acdisasm.h> | |
53 | ||
1da177e4 | 54 | #define _COMPONENT ACPI_DISPATCHER |
4be44fcd | 55 | ACPI_MODULE_NAME("dswexec") |
1da177e4 LT |
56 | |
57 | /* | |
58 | * Dispatch table for opcode classes | |
59 | */ | |
4be44fcd LB |
60 | static ACPI_EXECUTE_OP acpi_gbl_op_type_dispatch[] = { |
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 | |
4be44fcd | 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 BM |
125 | ACPI_ERROR((AE_INFO, |
126 | "No predicate obj_desc=%p State=%p", | |
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 | ||
4be44fcd | 141 | if (ACPI_GET_OBJECT_TYPE(local_obj_desc) != ACPI_TYPE_INTEGER) { |
b8e4d893 BM |
142 | ACPI_ERROR((AE_INFO, |
143 | "Bad predicate (not an integer) obj_desc=%p State=%p Type=%X", | |
144 | obj_desc, walk_state, | |
145 | ACPI_GET_OBJECT_TYPE(obj_desc))); | |
1da177e4 LT |
146 | |
147 | status = AE_AML_OPERAND_TYPE; | |
148 | goto cleanup; | |
149 | } | |
150 | ||
151 | /* Truncate the predicate to 32-bits if necessary */ | |
152 | ||
4be44fcd | 153 | 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 | ||
4be44fcd | 170 | cleanup: |
1da177e4 | 171 | |
4be44fcd LB |
172 | ACPI_DEBUG_PRINT((ACPI_DB_EXEC, "Completed a predicate eval=%X Op=%p\n", |
173 | walk_state->control_state->common.value, | |
174 | walk_state->op)); | |
1da177e4 | 175 | |
4be44fcd | 176 | /* Break to debugger to display result */ |
1da177e4 | 177 | |
4be44fcd LB |
178 | ACPI_DEBUGGER_EXEC(acpi_db_display_result_object |
179 | (local_obj_desc, walk_state)); | |
1da177e4 LT |
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) { | |
4be44fcd | 186 | acpi_ut_remove_reference(local_obj_desc); |
1da177e4 | 187 | } |
4be44fcd | 188 | acpi_ut_remove_reference(obj_desc); |
1da177e4 LT |
189 | |
190 | walk_state->control_state->common.state = ACPI_CONTROL_NORMAL; | |
4be44fcd | 191 | return_ACPI_STATUS(status); |
1da177e4 LT |
192 | } |
193 | ||
1da177e4 LT |
194 | /***************************************************************************** |
195 | * | |
196 | * FUNCTION: acpi_ds_exec_begin_op | |
197 | * | |
198 | * PARAMETERS: walk_state - Current state of the parse tree walk | |
44f6c012 | 199 | * out_op - Where to return op if a new one is created |
1da177e4 LT |
200 | * |
201 | * RETURN: Status | |
202 | * | |
203 | * DESCRIPTION: Descending callback used during the execution of control | |
204 | * methods. This is where most operators and operands are | |
205 | * dispatched to the interpreter. | |
206 | * | |
207 | ****************************************************************************/ | |
208 | ||
209 | acpi_status | |
4be44fcd LB |
210 | acpi_ds_exec_begin_op(struct acpi_walk_state *walk_state, |
211 | union acpi_parse_object **out_op) | |
1da177e4 | 212 | { |
4be44fcd LB |
213 | union acpi_parse_object *op; |
214 | acpi_status status = AE_OK; | |
215 | u32 opcode_class; | |
1da177e4 | 216 | |
4be44fcd | 217 | ACPI_FUNCTION_TRACE_PTR("ds_exec_begin_op", walk_state); |
1da177e4 LT |
218 | |
219 | op = walk_state->op; | |
220 | if (!op) { | |
4be44fcd LB |
221 | status = acpi_ds_load2_begin_op(walk_state, out_op); |
222 | if (ACPI_FAILURE(status)) { | |
223 | return_ACPI_STATUS(status); | |
1da177e4 LT |
224 | } |
225 | ||
226 | op = *out_op; | |
227 | walk_state->op = op; | |
228 | walk_state->opcode = op->common.aml_opcode; | |
4be44fcd LB |
229 | walk_state->op_info = |
230 | acpi_ps_get_opcode_info(op->common.aml_opcode); | |
231 | ||
232 | if (acpi_ns_opens_scope(walk_state->op_info->object_type)) { | |
233 | ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH, | |
234 | "(%s) Popping scope for Op %p\n", | |
235 | acpi_ut_get_type_name(walk_state-> | |
236 | op_info-> | |
237 | object_type), | |
238 | op)); | |
239 | ||
240 | status = acpi_ds_scope_stack_pop(walk_state); | |
241 | if (ACPI_FAILURE(status)) { | |
242 | return_ACPI_STATUS(status); | |
1da177e4 LT |
243 | } |
244 | } | |
245 | } | |
246 | ||
247 | if (op == walk_state->origin) { | |
248 | if (out_op) { | |
249 | *out_op = op; | |
250 | } | |
251 | ||
4be44fcd | 252 | return_ACPI_STATUS(AE_OK); |
1da177e4 LT |
253 | } |
254 | ||
255 | /* | |
256 | * If the previous opcode was a conditional, this opcode | |
257 | * must be the beginning of the associated predicate. | |
258 | * Save this knowledge in the current scope descriptor | |
259 | */ | |
260 | if ((walk_state->control_state) && | |
4be44fcd LB |
261 | (walk_state->control_state->common.state == |
262 | ACPI_CONTROL_CONDITIONAL_EXECUTING)) { | |
263 | ACPI_DEBUG_PRINT((ACPI_DB_EXEC, | |
264 | "Exec predicate Op=%p State=%p\n", op, | |
265 | walk_state)); | |
1da177e4 | 266 | |
4be44fcd LB |
267 | walk_state->control_state->common.state = |
268 | ACPI_CONTROL_PREDICATE_EXECUTING; | |
1da177e4 LT |
269 | |
270 | /* Save start of predicate */ | |
271 | ||
272 | walk_state->control_state->control.predicate_op = op; | |
273 | } | |
274 | ||
1da177e4 LT |
275 | opcode_class = walk_state->op_info->class; |
276 | ||
277 | /* We want to send namepaths to the load code */ | |
278 | ||
279 | if (op->common.aml_opcode == AML_INT_NAMEPATH_OP) { | |
280 | opcode_class = AML_CLASS_NAMED_OBJECT; | |
281 | } | |
282 | ||
283 | /* | |
284 | * Handle the opcode based upon the opcode type | |
285 | */ | |
286 | switch (opcode_class) { | |
287 | case AML_CLASS_CONTROL: | |
288 | ||
4be44fcd LB |
289 | status = acpi_ds_result_stack_push(walk_state); |
290 | if (ACPI_FAILURE(status)) { | |
291 | return_ACPI_STATUS(status); | |
1da177e4 LT |
292 | } |
293 | ||
4be44fcd | 294 | status = acpi_ds_exec_begin_control_op(walk_state, op); |
1da177e4 LT |
295 | break; |
296 | ||
1da177e4 LT |
297 | case AML_CLASS_NAMED_OBJECT: |
298 | ||
299 | if (walk_state->walk_type == ACPI_WALK_METHOD) { | |
300 | /* | |
44f6c012 RM |
301 | * Found a named object declaration during method execution; |
302 | * we must enter this object into the namespace. The created | |
303 | * object is temporary and will be deleted upon completion of | |
304 | * the execution of this method. | |
1da177e4 | 305 | */ |
4be44fcd | 306 | status = acpi_ds_load2_begin_op(walk_state, NULL); |
1da177e4 LT |
307 | } |
308 | ||
309 | if (op->common.aml_opcode == AML_REGION_OP) { | |
4be44fcd | 310 | status = acpi_ds_result_stack_push(walk_state); |
1da177e4 LT |
311 | } |
312 | break; | |
313 | ||
1da177e4 LT |
314 | case AML_CLASS_EXECUTE: |
315 | case AML_CLASS_CREATE: | |
1da177e4 LT |
316 | /* |
317 | * Most operators with arguments. | |
318 | * Start a new result/operand state | |
319 | */ | |
defba1d8 BM |
320 | if (walk_state->opcode != AML_CREATE_FIELD_OP) { |
321 | status = acpi_ds_result_stack_push(walk_state); | |
322 | } | |
1da177e4 LT |
323 | break; |
324 | ||
1da177e4 LT |
325 | default: |
326 | break; | |
327 | } | |
328 | ||
329 | /* Nothing to do here during method execution */ | |
330 | ||
4be44fcd | 331 | return_ACPI_STATUS(status); |
1da177e4 LT |
332 | } |
333 | ||
1da177e4 LT |
334 | /***************************************************************************** |
335 | * | |
336 | * FUNCTION: acpi_ds_exec_end_op | |
337 | * | |
338 | * PARAMETERS: walk_state - Current state of the parse tree walk | |
1da177e4 LT |
339 | * |
340 | * RETURN: Status | |
341 | * | |
342 | * DESCRIPTION: Ascending callback used during the execution of control | |
343 | * methods. The only thing we really need to do here is to | |
344 | * notice the beginning of IF, ELSE, and WHILE blocks. | |
345 | * | |
346 | ****************************************************************************/ | |
347 | ||
4be44fcd | 348 | acpi_status acpi_ds_exec_end_op(struct acpi_walk_state *walk_state) |
1da177e4 | 349 | { |
4be44fcd LB |
350 | union acpi_parse_object *op; |
351 | acpi_status status = AE_OK; | |
352 | u32 op_type; | |
353 | u32 op_class; | |
354 | union acpi_parse_object *next_op; | |
355 | union acpi_parse_object *first_arg; | |
1da177e4 | 356 | |
4be44fcd | 357 | ACPI_FUNCTION_TRACE_PTR("ds_exec_end_op", walk_state); |
1da177e4 | 358 | |
4be44fcd | 359 | op = walk_state->op; |
1da177e4 LT |
360 | op_type = walk_state->op_info->type; |
361 | op_class = walk_state->op_info->class; | |
362 | ||
363 | if (op_class == AML_CLASS_UNKNOWN) { | |
b8e4d893 BM |
364 | ACPI_ERROR((AE_INFO, "Unknown opcode %X", |
365 | op->common.aml_opcode)); | |
4be44fcd | 366 | return_ACPI_STATUS(AE_NOT_IMPLEMENTED); |
1da177e4 LT |
367 | } |
368 | ||
369 | first_arg = op->common.value.arg; | |
370 | ||
371 | /* Init the walk state */ | |
372 | ||
373 | walk_state->num_operands = 0; | |
374 | walk_state->return_desc = NULL; | |
375 | walk_state->result_obj = NULL; | |
376 | ||
377 | /* Call debugger for single step support (DEBUG build only) */ | |
378 | ||
4be44fcd LB |
379 | ACPI_DEBUGGER_EXEC(status = |
380 | acpi_db_single_step(walk_state, op, op_class)); | |
381 | ACPI_DEBUGGER_EXEC(if (ACPI_FAILURE(status)) { | |
382 | return_ACPI_STATUS(status);} | |
383 | ) ; | |
1da177e4 LT |
384 | |
385 | /* Decode the Opcode Class */ | |
386 | ||
387 | switch (op_class) { | |
4be44fcd | 388 | case AML_CLASS_ARGUMENT: /* constants, literals, etc. - do nothing */ |
1da177e4 LT |
389 | break; |
390 | ||
4be44fcd | 391 | case AML_CLASS_EXECUTE: /* most operators with arguments */ |
1da177e4 LT |
392 | |
393 | /* Build resolved operand stack */ | |
394 | ||
4be44fcd LB |
395 | status = acpi_ds_create_operands(walk_state, first_arg); |
396 | if (ACPI_FAILURE(status)) { | |
1da177e4 LT |
397 | goto cleanup; |
398 | } | |
399 | ||
400 | /* Done with this result state (Now that operand stack is built) */ | |
401 | ||
4be44fcd LB |
402 | status = acpi_ds_result_stack_pop(walk_state); |
403 | if (ACPI_FAILURE(status)) { | |
1da177e4 LT |
404 | goto cleanup; |
405 | } | |
406 | ||
407 | /* | |
408 | * All opcodes require operand resolution, with the only exceptions | |
409 | * being the object_type and size_of operators. | |
410 | */ | |
411 | if (!(walk_state->op_info->flags & AML_NO_OPERAND_RESOLVE)) { | |
52fc0b02 | 412 | |
1da177e4 LT |
413 | /* Resolve all operands */ |
414 | ||
4be44fcd LB |
415 | status = acpi_ex_resolve_operands(walk_state->opcode, |
416 | &(walk_state-> | |
417 | operands | |
418 | [walk_state-> | |
419 | num_operands - 1]), | |
420 | walk_state); | |
421 | if (ACPI_SUCCESS(status)) { | |
422 | ACPI_DUMP_OPERANDS(ACPI_WALK_OPERANDS, | |
423 | ACPI_IMODE_EXECUTE, | |
424 | acpi_ps_get_opcode_name | |
425 | (walk_state->opcode), | |
426 | walk_state->num_operands, | |
427 | "after ex_resolve_operands"); | |
1da177e4 LT |
428 | } |
429 | } | |
430 | ||
4be44fcd | 431 | if (ACPI_SUCCESS(status)) { |
1da177e4 LT |
432 | /* |
433 | * Dispatch the request to the appropriate interpreter handler | |
434 | * routine. There is one routine per opcode "type" based upon the | |
435 | * number of opcode arguments and return type. | |
436 | */ | |
4be44fcd LB |
437 | status = |
438 | acpi_gbl_op_type_dispatch[op_type] (walk_state); | |
439 | } else { | |
1da177e4 LT |
440 | /* |
441 | * Treat constructs of the form "Store(local_x,local_x)" as noops when the | |
442 | * Local is uninitialized. | |
443 | */ | |
4be44fcd LB |
444 | if ((status == AE_AML_UNINITIALIZED_LOCAL) && |
445 | (walk_state->opcode == AML_STORE_OP) && | |
446 | (walk_state->operands[0]->common.type == | |
447 | ACPI_TYPE_LOCAL_REFERENCE) | |
448 | && (walk_state->operands[1]->common.type == | |
449 | ACPI_TYPE_LOCAL_REFERENCE) | |
450 | && (walk_state->operands[0]->reference.opcode == | |
451 | walk_state->operands[1]->reference.opcode) | |
452 | && (walk_state->operands[0]->reference.offset == | |
453 | walk_state->operands[1]->reference.offset)) { | |
1da177e4 | 454 | status = AE_OK; |
4be44fcd | 455 | } else { |
b8e4d893 BM |
456 | ACPI_EXCEPTION((AE_INFO, status, |
457 | "While resolving operands for [%s]", | |
458 | acpi_ps_get_opcode_name | |
459 | (walk_state->opcode))); | |
1da177e4 LT |
460 | } |
461 | } | |
462 | ||
463 | /* Always delete the argument objects and clear the operand stack */ | |
464 | ||
4be44fcd | 465 | acpi_ds_clear_operands(walk_state); |
1da177e4 LT |
466 | |
467 | /* | |
468 | * If a result object was returned from above, push it on the | |
469 | * current result stack | |
470 | */ | |
4be44fcd LB |
471 | if (ACPI_SUCCESS(status) && walk_state->result_obj) { |
472 | status = | |
473 | acpi_ds_result_push(walk_state->result_obj, | |
474 | walk_state); | |
1da177e4 LT |
475 | } |
476 | ||
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 LT |
487 | |
488 | /* Make sure to properly pop the result stack */ | |
489 | ||
4be44fcd LB |
490 | if (ACPI_SUCCESS(status)) { |
491 | status = acpi_ds_result_stack_pop(walk_state); | |
492 | } else if (status == AE_CTRL_PENDING) { | |
493 | status = acpi_ds_result_stack_pop(walk_state); | |
494 | if (ACPI_SUCCESS(status)) { | |
1da177e4 LT |
495 | status = AE_CTRL_PENDING; |
496 | } | |
497 | } | |
498 | break; | |
499 | ||
1da177e4 LT |
500 | case AML_TYPE_METHOD_CALL: |
501 | ||
502 | /* | |
503 | * If the method is referenced from within a package | |
504 | * declaration, it is not a invocation of the method, just | |
505 | * a reference to it. | |
506 | */ | |
507 | if ((op->asl.parent) && | |
4be44fcd LB |
508 | ((op->asl.parent->asl.aml_opcode == AML_PACKAGE_OP) |
509 | || (op->asl.parent->asl.aml_opcode == | |
510 | AML_VAR_PACKAGE_OP))) { | |
511 | ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH, | |
512 | "Method Reference in a Package, Op=%p\n", | |
513 | op)); | |
514 | op->common.node = | |
515 | (struct acpi_namespace_node *)op->asl.value. | |
516 | arg->asl.node->object; | |
517 | acpi_ut_add_reference(op->asl.value.arg->asl. | |
518 | node->object); | |
519 | return_ACPI_STATUS(AE_OK); | |
1da177e4 LT |
520 | } |
521 | ||
4be44fcd LB |
522 | ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH, |
523 | "Method invocation, Op=%p\n", op)); | |
1da177e4 LT |
524 | |
525 | /* | |
526 | * (AML_METHODCALL) Op->Asl.Value.Arg->Asl.Node contains | |
527 | * the method Node pointer | |
528 | */ | |
529 | /* next_op points to the op that holds the method name */ | |
530 | ||
531 | next_op = first_arg; | |
532 | ||
533 | /* next_op points to first argument op */ | |
534 | ||
535 | next_op = next_op->common.next; | |
536 | ||
537 | /* | |
538 | * Get the method's arguments and put them on the operand stack | |
539 | */ | |
4be44fcd LB |
540 | status = acpi_ds_create_operands(walk_state, next_op); |
541 | if (ACPI_FAILURE(status)) { | |
1da177e4 LT |
542 | break; |
543 | } | |
544 | ||
545 | /* | |
546 | * Since the operands will be passed to another control method, | |
547 | * we must resolve all local references here (Local variables, | |
548 | * arguments to *this* method, etc.) | |
549 | */ | |
4be44fcd LB |
550 | status = acpi_ds_resolve_operands(walk_state); |
551 | if (ACPI_FAILURE(status)) { | |
52fc0b02 | 552 | |
1da177e4 LT |
553 | /* On error, clear all resolved operands */ |
554 | ||
4be44fcd | 555 | acpi_ds_clear_operands(walk_state); |
1da177e4 LT |
556 | break; |
557 | } | |
558 | ||
559 | /* | |
560 | * Tell the walk loop to preempt this running method and | |
561 | * execute the new method | |
562 | */ | |
563 | status = AE_CTRL_TRANSFER; | |
564 | ||
565 | /* | |
566 | * Return now; we don't want to disturb anything, | |
567 | * especially the operand count! | |
568 | */ | |
4be44fcd | 569 | return_ACPI_STATUS(status); |
1da177e4 LT |
570 | |
571 | case AML_TYPE_CREATE_FIELD: | |
572 | ||
4be44fcd LB |
573 | ACPI_DEBUG_PRINT((ACPI_DB_EXEC, |
574 | "Executing create_field Buffer/Index Op=%p\n", | |
575 | op)); | |
1da177e4 | 576 | |
4be44fcd LB |
577 | status = acpi_ds_load2_end_op(walk_state); |
578 | if (ACPI_FAILURE(status)) { | |
1da177e4 LT |
579 | break; |
580 | } | |
581 | ||
4be44fcd LB |
582 | status = |
583 | acpi_ds_eval_buffer_field_operands(walk_state, op); | |
1da177e4 LT |
584 | break; |
585 | ||
1da177e4 LT |
586 | case AML_TYPE_CREATE_OBJECT: |
587 | ||
4be44fcd LB |
588 | ACPI_DEBUG_PRINT((ACPI_DB_EXEC, |
589 | "Executing create_object (Buffer/Package) Op=%p\n", | |
590 | op)); | |
1da177e4 LT |
591 | |
592 | switch (op->common.parent->common.aml_opcode) { | |
593 | case AML_NAME_OP: | |
594 | ||
595 | /* | |
44f6c012 RM |
596 | * Put the Node on the object stack (Contains the ACPI Name |
597 | * of this object) | |
1da177e4 | 598 | */ |
4be44fcd LB |
599 | walk_state->operands[0] = |
600 | (void *)op->common.parent->common.node; | |
1da177e4 LT |
601 | walk_state->num_operands = 1; |
602 | ||
4be44fcd LB |
603 | status = acpi_ds_create_node(walk_state, |
604 | op->common.parent-> | |
605 | common.node, | |
606 | op->common.parent); | |
607 | if (ACPI_FAILURE(status)) { | |
1da177e4 LT |
608 | break; |
609 | } | |
610 | ||
611 | /* Fall through */ | |
612 | /*lint -fallthrough */ | |
613 | ||
614 | case AML_INT_EVAL_SUBTREE_OP: | |
615 | ||
4be44fcd LB |
616 | status = |
617 | acpi_ds_eval_data_object_operands | |
618 | (walk_state, op, | |
619 | acpi_ns_get_attached_object(op->common. | |
620 | parent->common. | |
621 | node)); | |
1da177e4 LT |
622 | break; |
623 | ||
624 | default: | |
625 | ||
4be44fcd LB |
626 | status = |
627 | acpi_ds_eval_data_object_operands | |
628 | (walk_state, op, NULL); | |
1da177e4 LT |
629 | break; |
630 | } | |
631 | ||
44f6c012 | 632 | /* Done with result state (Now that operand stack is built) */ |
1da177e4 | 633 | |
4be44fcd LB |
634 | status = acpi_ds_result_stack_pop(walk_state); |
635 | if (ACPI_FAILURE(status)) { | |
1da177e4 LT |
636 | goto cleanup; |
637 | } | |
638 | ||
639 | /* | |
640 | * If a result object was returned from above, push it on the | |
641 | * current result stack | |
642 | */ | |
44f6c012 | 643 | if (walk_state->result_obj) { |
4be44fcd LB |
644 | status = |
645 | acpi_ds_result_push(walk_state->result_obj, | |
646 | walk_state); | |
1da177e4 LT |
647 | } |
648 | break; | |
649 | ||
1da177e4 LT |
650 | case AML_TYPE_NAMED_FIELD: |
651 | case AML_TYPE_NAMED_COMPLEX: | |
652 | case AML_TYPE_NAMED_SIMPLE: | |
653 | case AML_TYPE_NAMED_NO_OBJ: | |
654 | ||
4be44fcd LB |
655 | status = acpi_ds_load2_end_op(walk_state); |
656 | if (ACPI_FAILURE(status)) { | |
1da177e4 LT |
657 | break; |
658 | } | |
659 | ||
660 | if (op->common.aml_opcode == AML_REGION_OP) { | |
4be44fcd LB |
661 | ACPI_DEBUG_PRINT((ACPI_DB_EXEC, |
662 | "Executing op_region Address/Length Op=%p\n", | |
663 | op)); | |
664 | ||
665 | status = | |
666 | acpi_ds_eval_region_operands(walk_state, | |
667 | op); | |
668 | if (ACPI_FAILURE(status)) { | |
1da177e4 LT |
669 | break; |
670 | } | |
671 | ||
4be44fcd | 672 | status = acpi_ds_result_stack_pop(walk_state); |
1da177e4 LT |
673 | } |
674 | ||
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 BM |
692 | ACPI_ERROR((AE_INFO, |
693 | "Unimplemented opcode, class=%X type=%X Opcode=%X Op=%p", | |
694 | op_class, op_type, op->common.aml_opcode, | |
695 | op)); | |
1da177e4 LT |
696 | |
697 | status = AE_NOT_IMPLEMENTED; | |
698 | break; | |
699 | } | |
700 | } | |
701 | ||
702 | /* | |
703 | * ACPI 2.0 support for 64-bit integers: Truncate numeric | |
704 | * result value if we are executing from a 32-bit ACPI table | |
705 | */ | |
4be44fcd | 706 | acpi_ex_truncate_for32bit_table(walk_state->result_obj); |
1da177e4 LT |
707 | |
708 | /* | |
709 | * Check if we just completed the evaluation of a | |
710 | * conditional predicate | |
711 | */ | |
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 | ||
4be44fcd | 724 | cleanup: |
1da177e4 | 725 | |
1da177e4 | 726 | if (walk_state->result_obj) { |
52fc0b02 | 727 | |
1da177e4 LT |
728 | /* Break to debugger to display result */ |
729 | ||
4be44fcd LB |
730 | ACPI_DEBUGGER_EXEC(acpi_db_display_result_object |
731 | (walk_state->result_obj, 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 | } |