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1da177e4 LT |
1 | /****************************************************************************** |
2 | * | |
3 | * Module Name: dswexec - Dispatcher method execution callbacks; | |
4 | * dispatch to interpreter. | |
5 | * | |
6 | *****************************************************************************/ | |
7 | ||
8 | /* | |
a8357b0c | 9 | * Copyright (C) 2000 - 2010, 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 | */ | |
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 | |
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, |
b229cf92 | 143 | "Bad predicate (not an integer) ObjDesc=%p State=%p Type=%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 | ||
4be44fcd | 152 | 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 | ||
4be44fcd | 173 | cleanup: |
1da177e4 | 174 | |
4be44fcd LB |
175 | ACPI_DEBUG_PRINT((ACPI_DB_EXEC, "Completed a predicate eval=%X Op=%p\n", |
176 | walk_state->control_state->common.value, | |
177 | walk_state->op)); | |
1da177e4 | 178 | |
4be44fcd | 179 | /* Break to debugger to display result */ |
1da177e4 | 180 | |
4be44fcd LB |
181 | ACPI_DEBUGGER_EXEC(acpi_db_display_result_object |
182 | (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 | |
207 | * methods. This is where most operators and operands are | |
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, | |
267 | "Exec predicate Op=%p State=%p\n", op, | |
268 | 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 RM |
299 | * Found a named object declaration during method execution; |
300 | * we must enter this object into the namespace. The created | |
301 | * object is temporary and will be deleted upon completion of | |
302 | * the execution of this method. | |
1da177e4 | 303 | */ |
4be44fcd | 304 | status = acpi_ds_load2_begin_op(walk_state, NULL); |
1da177e4 LT |
305 | } |
306 | ||
1da177e4 LT |
307 | break; |
308 | ||
1da177e4 LT |
309 | case AML_CLASS_EXECUTE: |
310 | case AML_CLASS_CREATE: | |
773069d4 | 311 | |
1da177e4 LT |
312 | break; |
313 | ||
1da177e4 LT |
314 | default: |
315 | break; | |
316 | } | |
317 | ||
318 | /* Nothing to do here during method execution */ | |
319 | ||
4be44fcd | 320 | return_ACPI_STATUS(status); |
867c9aec BM |
321 | |
322 | error_exit: | |
323 | status = acpi_ds_method_error(status, walk_state); | |
324 | return_ACPI_STATUS(status); | |
1da177e4 LT |
325 | } |
326 | ||
1da177e4 LT |
327 | /***************************************************************************** |
328 | * | |
329 | * FUNCTION: acpi_ds_exec_end_op | |
330 | * | |
331 | * PARAMETERS: walk_state - Current state of the parse tree walk | |
1da177e4 LT |
332 | * |
333 | * RETURN: Status | |
334 | * | |
335 | * DESCRIPTION: Ascending callback used during the execution of control | |
336 | * methods. The only thing we really need to do here is to | |
337 | * notice the beginning of IF, ELSE, and WHILE blocks. | |
338 | * | |
339 | ****************************************************************************/ | |
340 | ||
4be44fcd | 341 | acpi_status acpi_ds_exec_end_op(struct acpi_walk_state *walk_state) |
1da177e4 | 342 | { |
4be44fcd LB |
343 | union acpi_parse_object *op; |
344 | acpi_status status = AE_OK; | |
345 | u32 op_type; | |
346 | u32 op_class; | |
347 | union acpi_parse_object *next_op; | |
348 | union acpi_parse_object *first_arg; | |
1da177e4 | 349 | |
b229cf92 | 350 | ACPI_FUNCTION_TRACE_PTR(ds_exec_end_op, walk_state); |
1da177e4 | 351 | |
4be44fcd | 352 | op = walk_state->op; |
1da177e4 LT |
353 | op_type = walk_state->op_info->type; |
354 | op_class = walk_state->op_info->class; | |
355 | ||
356 | if (op_class == AML_CLASS_UNKNOWN) { | |
b8e4d893 BM |
357 | ACPI_ERROR((AE_INFO, "Unknown opcode %X", |
358 | op->common.aml_opcode)); | |
4be44fcd | 359 | return_ACPI_STATUS(AE_NOT_IMPLEMENTED); |
1da177e4 LT |
360 | } |
361 | ||
362 | first_arg = op->common.value.arg; | |
363 | ||
364 | /* Init the walk state */ | |
365 | ||
366 | walk_state->num_operands = 0; | |
773069d4 | 367 | walk_state->operand_index = 0; |
1da177e4 LT |
368 | walk_state->return_desc = NULL; |
369 | walk_state->result_obj = NULL; | |
370 | ||
371 | /* Call debugger for single step support (DEBUG build only) */ | |
372 | ||
4be44fcd LB |
373 | ACPI_DEBUGGER_EXEC(status = |
374 | acpi_db_single_step(walk_state, op, op_class)); | |
375 | ACPI_DEBUGGER_EXEC(if (ACPI_FAILURE(status)) { | |
376 | return_ACPI_STATUS(status);} | |
377 | ) ; | |
1da177e4 LT |
378 | |
379 | /* Decode the Opcode Class */ | |
380 | ||
381 | switch (op_class) { | |
4e3156b1 BM |
382 | case AML_CLASS_ARGUMENT: /* Constants, literals, etc. */ |
383 | ||
384 | if (walk_state->opcode == AML_INT_NAMEPATH_OP) { | |
385 | status = acpi_ds_evaluate_name_path(walk_state); | |
386 | if (ACPI_FAILURE(status)) { | |
387 | goto cleanup; | |
388 | } | |
389 | } | |
1da177e4 LT |
390 | break; |
391 | ||
4e3156b1 | 392 | case AML_CLASS_EXECUTE: /* Most operators with arguments */ |
1da177e4 LT |
393 | |
394 | /* Build resolved operand stack */ | |
395 | ||
4be44fcd LB |
396 | status = acpi_ds_create_operands(walk_state, first_arg); |
397 | if (ACPI_FAILURE(status)) { | |
1da177e4 LT |
398 | goto cleanup; |
399 | } | |
400 | ||
1da177e4 LT |
401 | /* |
402 | * All opcodes require operand resolution, with the only exceptions | |
403 | * being the object_type and size_of operators. | |
404 | */ | |
405 | if (!(walk_state->op_info->flags & AML_NO_OPERAND_RESOLVE)) { | |
52fc0b02 | 406 | |
1da177e4 LT |
407 | /* Resolve all operands */ |
408 | ||
4be44fcd LB |
409 | status = acpi_ex_resolve_operands(walk_state->opcode, |
410 | &(walk_state-> | |
411 | operands | |
412 | [walk_state-> | |
413 | num_operands - 1]), | |
414 | walk_state); | |
1da177e4 LT |
415 | } |
416 | ||
4be44fcd | 417 | if (ACPI_SUCCESS(status)) { |
1da177e4 LT |
418 | /* |
419 | * Dispatch the request to the appropriate interpreter handler | |
420 | * routine. There is one routine per opcode "type" based upon the | |
421 | * number of opcode arguments and return type. | |
422 | */ | |
4be44fcd LB |
423 | status = |
424 | acpi_gbl_op_type_dispatch[op_type] (walk_state); | |
425 | } else { | |
1da177e4 | 426 | /* |
b229cf92 | 427 | * Treat constructs of the form "Store(LocalX,LocalX)" as noops when the |
1da177e4 LT |
428 | * Local is uninitialized. |
429 | */ | |
4be44fcd LB |
430 | if ((status == AE_AML_UNINITIALIZED_LOCAL) && |
431 | (walk_state->opcode == AML_STORE_OP) && | |
432 | (walk_state->operands[0]->common.type == | |
433 | ACPI_TYPE_LOCAL_REFERENCE) | |
434 | && (walk_state->operands[1]->common.type == | |
435 | ACPI_TYPE_LOCAL_REFERENCE) | |
1044f1f6 BM |
436 | && (walk_state->operands[0]->reference.class == |
437 | walk_state->operands[1]->reference.class) | |
438 | && (walk_state->operands[0]->reference.value == | |
439 | walk_state->operands[1]->reference.value)) { | |
1da177e4 | 440 | status = AE_OK; |
4be44fcd | 441 | } else { |
b8e4d893 BM |
442 | ACPI_EXCEPTION((AE_INFO, status, |
443 | "While resolving operands for [%s]", | |
444 | acpi_ps_get_opcode_name | |
445 | (walk_state->opcode))); | |
1da177e4 LT |
446 | } |
447 | } | |
448 | ||
449 | /* Always delete the argument objects and clear the operand stack */ | |
450 | ||
4be44fcd | 451 | acpi_ds_clear_operands(walk_state); |
1da177e4 LT |
452 | |
453 | /* | |
454 | * If a result object was returned from above, push it on the | |
455 | * current result stack | |
456 | */ | |
4be44fcd LB |
457 | if (ACPI_SUCCESS(status) && walk_state->result_obj) { |
458 | status = | |
459 | acpi_ds_result_push(walk_state->result_obj, | |
460 | walk_state); | |
1da177e4 | 461 | } |
1da177e4 LT |
462 | break; |
463 | ||
1da177e4 LT |
464 | default: |
465 | ||
466 | switch (op_type) { | |
4be44fcd | 467 | case AML_TYPE_CONTROL: /* Type 1 opcode, IF/ELSE/WHILE/NOOP */ |
1da177e4 LT |
468 | |
469 | /* 1 Operand, 0 external_result, 0 internal_result */ | |
470 | ||
4be44fcd | 471 | status = acpi_ds_exec_end_control_op(walk_state, op); |
1da177e4 | 472 | |
1da177e4 LT |
473 | break; |
474 | ||
1da177e4 LT |
475 | case AML_TYPE_METHOD_CALL: |
476 | ||
477 | /* | |
478 | * If the method is referenced from within a package | |
479 | * declaration, it is not a invocation of the method, just | |
480 | * a reference to it. | |
481 | */ | |
482 | if ((op->asl.parent) && | |
4be44fcd LB |
483 | ((op->asl.parent->asl.aml_opcode == AML_PACKAGE_OP) |
484 | || (op->asl.parent->asl.aml_opcode == | |
485 | AML_VAR_PACKAGE_OP))) { | |
486 | ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH, | |
487 | "Method Reference in a Package, Op=%p\n", | |
488 | op)); | |
967440e3 | 489 | |
4be44fcd LB |
490 | op->common.node = |
491 | (struct acpi_namespace_node *)op->asl.value. | |
b160987d | 492 | arg->asl.node; |
4be44fcd LB |
493 | acpi_ut_add_reference(op->asl.value.arg->asl. |
494 | node->object); | |
495 | return_ACPI_STATUS(AE_OK); | |
1da177e4 LT |
496 | } |
497 | ||
4be44fcd LB |
498 | ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH, |
499 | "Method invocation, Op=%p\n", op)); | |
1da177e4 LT |
500 | |
501 | /* | |
502 | * (AML_METHODCALL) Op->Asl.Value.Arg->Asl.Node contains | |
503 | * the method Node pointer | |
504 | */ | |
505 | /* next_op points to the op that holds the method name */ | |
506 | ||
507 | next_op = first_arg; | |
508 | ||
509 | /* next_op points to first argument op */ | |
510 | ||
511 | next_op = next_op->common.next; | |
512 | ||
513 | /* | |
514 | * Get the method's arguments and put them on the operand stack | |
515 | */ | |
4be44fcd LB |
516 | status = acpi_ds_create_operands(walk_state, next_op); |
517 | if (ACPI_FAILURE(status)) { | |
1da177e4 LT |
518 | break; |
519 | } | |
520 | ||
521 | /* | |
522 | * Since the operands will be passed to another control method, | |
523 | * we must resolve all local references here (Local variables, | |
524 | * arguments to *this* method, etc.) | |
525 | */ | |
4be44fcd LB |
526 | status = acpi_ds_resolve_operands(walk_state); |
527 | if (ACPI_FAILURE(status)) { | |
52fc0b02 | 528 | |
1da177e4 LT |
529 | /* On error, clear all resolved operands */ |
530 | ||
4be44fcd | 531 | acpi_ds_clear_operands(walk_state); |
1da177e4 LT |
532 | break; |
533 | } | |
534 | ||
535 | /* | |
536 | * Tell the walk loop to preempt this running method and | |
537 | * execute the new method | |
538 | */ | |
539 | status = AE_CTRL_TRANSFER; | |
540 | ||
541 | /* | |
542 | * Return now; we don't want to disturb anything, | |
543 | * especially the operand count! | |
544 | */ | |
4be44fcd | 545 | return_ACPI_STATUS(status); |
1da177e4 LT |
546 | |
547 | case AML_TYPE_CREATE_FIELD: | |
548 | ||
4be44fcd | 549 | ACPI_DEBUG_PRINT((ACPI_DB_EXEC, |
b229cf92 | 550 | "Executing CreateField Buffer/Index Op=%p\n", |
4be44fcd | 551 | op)); |
1da177e4 | 552 | |
4be44fcd LB |
553 | status = acpi_ds_load2_end_op(walk_state); |
554 | if (ACPI_FAILURE(status)) { | |
1da177e4 LT |
555 | break; |
556 | } | |
557 | ||
4be44fcd LB |
558 | status = |
559 | acpi_ds_eval_buffer_field_operands(walk_state, op); | |
1da177e4 LT |
560 | break; |
561 | ||
1da177e4 LT |
562 | case AML_TYPE_CREATE_OBJECT: |
563 | ||
4be44fcd | 564 | ACPI_DEBUG_PRINT((ACPI_DB_EXEC, |
b229cf92 | 565 | "Executing CreateObject (Buffer/Package) Op=%p\n", |
4be44fcd | 566 | op)); |
1da177e4 LT |
567 | |
568 | switch (op->common.parent->common.aml_opcode) { | |
569 | case AML_NAME_OP: | |
570 | ||
571 | /* | |
44f6c012 RM |
572 | * Put the Node on the object stack (Contains the ACPI Name |
573 | * of this object) | |
1da177e4 | 574 | */ |
4be44fcd LB |
575 | walk_state->operands[0] = |
576 | (void *)op->common.parent->common.node; | |
1da177e4 LT |
577 | walk_state->num_operands = 1; |
578 | ||
4be44fcd LB |
579 | status = acpi_ds_create_node(walk_state, |
580 | op->common.parent-> | |
581 | common.node, | |
582 | op->common.parent); | |
583 | if (ACPI_FAILURE(status)) { | |
1da177e4 LT |
584 | break; |
585 | } | |
586 | ||
587 | /* Fall through */ | |
588 | /*lint -fallthrough */ | |
589 | ||
590 | case AML_INT_EVAL_SUBTREE_OP: | |
591 | ||
4be44fcd LB |
592 | status = |
593 | acpi_ds_eval_data_object_operands | |
594 | (walk_state, op, | |
595 | acpi_ns_get_attached_object(op->common. | |
596 | parent->common. | |
597 | node)); | |
1da177e4 LT |
598 | break; |
599 | ||
600 | default: | |
601 | ||
4be44fcd LB |
602 | status = |
603 | acpi_ds_eval_data_object_operands | |
604 | (walk_state, op, NULL); | |
1da177e4 LT |
605 | break; |
606 | } | |
607 | ||
1da177e4 LT |
608 | /* |
609 | * If a result object was returned from above, push it on the | |
610 | * current result stack | |
611 | */ | |
44f6c012 | 612 | if (walk_state->result_obj) { |
4be44fcd LB |
613 | status = |
614 | acpi_ds_result_push(walk_state->result_obj, | |
615 | walk_state); | |
1da177e4 LT |
616 | } |
617 | break; | |
618 | ||
1da177e4 LT |
619 | case AML_TYPE_NAMED_FIELD: |
620 | case AML_TYPE_NAMED_COMPLEX: | |
621 | case AML_TYPE_NAMED_SIMPLE: | |
622 | case AML_TYPE_NAMED_NO_OBJ: | |
623 | ||
4be44fcd LB |
624 | status = acpi_ds_load2_end_op(walk_state); |
625 | if (ACPI_FAILURE(status)) { | |
1da177e4 LT |
626 | break; |
627 | } | |
628 | ||
629 | if (op->common.aml_opcode == AML_REGION_OP) { | |
4be44fcd | 630 | ACPI_DEBUG_PRINT((ACPI_DB_EXEC, |
b229cf92 | 631 | "Executing OpRegion Address/Length Op=%p\n", |
4be44fcd LB |
632 | op)); |
633 | ||
634 | status = | |
635 | acpi_ds_eval_region_operands(walk_state, | |
636 | op); | |
637 | if (ACPI_FAILURE(status)) { | |
1da177e4 LT |
638 | break; |
639 | } | |
941f48bb LM |
640 | } else if (op->common.aml_opcode == AML_DATA_REGION_OP) { |
641 | ACPI_DEBUG_PRINT((ACPI_DB_EXEC, | |
642 | "Executing DataTableRegion Strings Op=%p\n", | |
643 | op)); | |
644 | ||
645 | status = | |
646 | acpi_ds_eval_table_region_operands | |
647 | (walk_state, op); | |
648 | if (ACPI_FAILURE(status)) { | |
649 | break; | |
650 | } | |
ef805d95 LM |
651 | } else if (op->common.aml_opcode == AML_BANK_FIELD_OP) { |
652 | ACPI_DEBUG_PRINT((ACPI_DB_EXEC, | |
653 | "Executing BankField Op=%p\n", | |
654 | op)); | |
655 | ||
656 | status = | |
657 | acpi_ds_eval_bank_field_operands(walk_state, | |
658 | op); | |
659 | if (ACPI_FAILURE(status)) { | |
660 | break; | |
661 | } | |
1da177e4 | 662 | } |
1da177e4 LT |
663 | break; |
664 | ||
1da177e4 LT |
665 | case AML_TYPE_UNDEFINED: |
666 | ||
b8e4d893 BM |
667 | ACPI_ERROR((AE_INFO, |
668 | "Undefined opcode type Op=%p", op)); | |
4be44fcd | 669 | return_ACPI_STATUS(AE_NOT_IMPLEMENTED); |
1da177e4 LT |
670 | |
671 | case AML_TYPE_BOGUS: | |
672 | ||
4be44fcd LB |
673 | ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH, |
674 | "Internal opcode=%X type Op=%p\n", | |
675 | walk_state->opcode, op)); | |
1da177e4 LT |
676 | break; |
677 | ||
1da177e4 LT |
678 | default: |
679 | ||
b8e4d893 BM |
680 | ACPI_ERROR((AE_INFO, |
681 | "Unimplemented opcode, class=%X type=%X Opcode=%X Op=%p", | |
682 | op_class, op_type, op->common.aml_opcode, | |
683 | op)); | |
1da177e4 LT |
684 | |
685 | status = AE_NOT_IMPLEMENTED; | |
686 | break; | |
687 | } | |
688 | } | |
689 | ||
690 | /* | |
691 | * ACPI 2.0 support for 64-bit integers: Truncate numeric | |
692 | * result value if we are executing from a 32-bit ACPI table | |
693 | */ | |
4be44fcd | 694 | acpi_ex_truncate_for32bit_table(walk_state->result_obj); |
1da177e4 LT |
695 | |
696 | /* | |
697 | * Check if we just completed the evaluation of a | |
698 | * conditional predicate | |
699 | */ | |
4be44fcd LB |
700 | if ((ACPI_SUCCESS(status)) && |
701 | (walk_state->control_state) && | |
702 | (walk_state->control_state->common.state == | |
703 | ACPI_CONTROL_PREDICATE_EXECUTING) && | |
704 | (walk_state->control_state->control.predicate_op == op)) { | |
705 | status = | |
706 | acpi_ds_get_predicate_value(walk_state, | |
707 | walk_state->result_obj); | |
1da177e4 LT |
708 | walk_state->result_obj = NULL; |
709 | } | |
710 | ||
4be44fcd | 711 | cleanup: |
1da177e4 | 712 | |
1da177e4 | 713 | if (walk_state->result_obj) { |
52fc0b02 | 714 | |
1da177e4 LT |
715 | /* Break to debugger to display result */ |
716 | ||
4be44fcd LB |
717 | ACPI_DEBUGGER_EXEC(acpi_db_display_result_object |
718 | (walk_state->result_obj, walk_state)); | |
1da177e4 LT |
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 | */ | |
4be44fcd LB |
725 | acpi_ds_delete_result_if_not_used(op, walk_state->result_obj, |
726 | walk_state); | |
1da177e4 | 727 | } |
1da177e4 LT |
728 | #ifdef _UNDER_DEVELOPMENT |
729 | ||
730 | if (walk_state->parser_state.aml == walk_state->parser_state.aml_end) { | |
4be44fcd | 731 | acpi_db_method_end(walk_state); |
1da177e4 LT |
732 | } |
733 | #endif | |
734 | ||
defba1d8 | 735 | /* Invoke exception handler on error */ |
1da177e4 | 736 | |
4be44fcd | 737 | if (ACPI_FAILURE(status)) { |
defba1d8 | 738 | status = acpi_ds_method_error(status, walk_state); |
1da177e4 | 739 | } |
1da177e4 | 740 | |
defba1d8 BM |
741 | /* Always clear the object stack */ |
742 | ||
743 | walk_state->num_operands = 0; | |
4be44fcd | 744 | return_ACPI_STATUS(status); |
1da177e4 | 745 | } |