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1da177e4 LT |
1 | /****************************************************************************** |
2 | * | |
3 | * Module Name: dswexec - Dispatcher method execution callbacks; | |
4 | * dispatch to interpreter. | |
5 | * | |
6 | *****************************************************************************/ | |
7 | ||
8 | /* | |
75a44ce0 | 9 | * Copyright (C) 2000 - 2008, 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> |
50df4d8b | 46 | #include <acpi/accommon.h> |
1da177e4 LT |
47 | #include <acpi/acparser.h> |
48 | #include <acpi/amlcode.h> | |
49 | #include <acpi/acdispat.h> | |
50 | #include <acpi/acinterp.h> | |
51 | #include <acpi/acnamesp.h> | |
52 | #include <acpi/acdebug.h> | |
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 | ||
4be44fcd | 141 | if (ACPI_GET_OBJECT_TYPE(local_obj_desc) != ACPI_TYPE_INTEGER) { |
b8e4d893 | 142 | ACPI_ERROR((AE_INFO, |
b229cf92 | 143 | "Bad predicate (not an integer) ObjDesc=%p State=%p Type=%X", |
b8e4d893 BM |
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 | ||
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 | ||
4be44fcd | 174 | cleanup: |
1da177e4 | 175 | |
4be44fcd LB |
176 | ACPI_DEBUG_PRINT((ACPI_DB_EXEC, "Completed a predicate eval=%X Op=%p\n", |
177 | walk_state->control_state->common.value, | |
178 | walk_state->op)); | |
1da177e4 | 179 | |
4be44fcd | 180 | /* Break to debugger to display result */ |
1da177e4 | 181 | |
4be44fcd LB |
182 | ACPI_DEBUGGER_EXEC(acpi_db_display_result_object |
183 | (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 | |
208 | * methods. This is where most operators and operands are | |
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, | |
268 | "Exec predicate Op=%p State=%p\n", op, | |
269 | 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 RM |
300 | * Found a named object declaration during method execution; |
301 | * we must enter this object into the namespace. The created | |
302 | * object is temporary and will be deleted upon completion of | |
303 | * the execution of this method. | |
1da177e4 | 304 | */ |
4be44fcd | 305 | status = acpi_ds_load2_begin_op(walk_state, NULL); |
1da177e4 LT |
306 | } |
307 | ||
1da177e4 LT |
308 | break; |
309 | ||
1da177e4 LT |
310 | case AML_CLASS_EXECUTE: |
311 | case AML_CLASS_CREATE: | |
773069d4 | 312 | |
1da177e4 LT |
313 | break; |
314 | ||
1da177e4 LT |
315 | default: |
316 | break; | |
317 | } | |
318 | ||
319 | /* Nothing to do here during method execution */ | |
320 | ||
4be44fcd | 321 | return_ACPI_STATUS(status); |
867c9aec BM |
322 | |
323 | error_exit: | |
324 | status = acpi_ds_method_error(status, walk_state); | |
325 | return_ACPI_STATUS(status); | |
1da177e4 LT |
326 | } |
327 | ||
1da177e4 LT |
328 | /***************************************************************************** |
329 | * | |
330 | * FUNCTION: acpi_ds_exec_end_op | |
331 | * | |
332 | * PARAMETERS: walk_state - Current state of the parse tree walk | |
1da177e4 LT |
333 | * |
334 | * RETURN: Status | |
335 | * | |
336 | * DESCRIPTION: Ascending callback used during the execution of control | |
337 | * methods. The only thing we really need to do here is to | |
338 | * notice the beginning of IF, ELSE, and WHILE blocks. | |
339 | * | |
340 | ****************************************************************************/ | |
341 | ||
4be44fcd | 342 | acpi_status acpi_ds_exec_end_op(struct acpi_walk_state *walk_state) |
1da177e4 | 343 | { |
4be44fcd LB |
344 | union acpi_parse_object *op; |
345 | acpi_status status = AE_OK; | |
346 | u32 op_type; | |
347 | u32 op_class; | |
348 | union acpi_parse_object *next_op; | |
349 | union acpi_parse_object *first_arg; | |
1da177e4 | 350 | |
b229cf92 | 351 | ACPI_FUNCTION_TRACE_PTR(ds_exec_end_op, walk_state); |
1da177e4 | 352 | |
4be44fcd | 353 | op = walk_state->op; |
1da177e4 LT |
354 | op_type = walk_state->op_info->type; |
355 | op_class = walk_state->op_info->class; | |
356 | ||
357 | if (op_class == AML_CLASS_UNKNOWN) { | |
b8e4d893 BM |
358 | ACPI_ERROR((AE_INFO, "Unknown opcode %X", |
359 | op->common.aml_opcode)); | |
4be44fcd | 360 | return_ACPI_STATUS(AE_NOT_IMPLEMENTED); |
1da177e4 LT |
361 | } |
362 | ||
363 | first_arg = op->common.value.arg; | |
364 | ||
365 | /* Init the walk state */ | |
366 | ||
367 | walk_state->num_operands = 0; | |
773069d4 | 368 | walk_state->operand_index = 0; |
1da177e4 LT |
369 | walk_state->return_desc = NULL; |
370 | walk_state->result_obj = NULL; | |
371 | ||
372 | /* Call debugger for single step support (DEBUG build only) */ | |
373 | ||
4be44fcd LB |
374 | ACPI_DEBUGGER_EXEC(status = |
375 | acpi_db_single_step(walk_state, op, op_class)); | |
376 | ACPI_DEBUGGER_EXEC(if (ACPI_FAILURE(status)) { | |
377 | return_ACPI_STATUS(status);} | |
378 | ) ; | |
1da177e4 LT |
379 | |
380 | /* Decode the Opcode Class */ | |
381 | ||
382 | switch (op_class) { | |
4e3156b1 BM |
383 | case AML_CLASS_ARGUMENT: /* Constants, literals, etc. */ |
384 | ||
385 | if (walk_state->opcode == AML_INT_NAMEPATH_OP) { | |
386 | status = acpi_ds_evaluate_name_path(walk_state); | |
387 | if (ACPI_FAILURE(status)) { | |
388 | goto cleanup; | |
389 | } | |
390 | } | |
1da177e4 LT |
391 | break; |
392 | ||
4e3156b1 | 393 | case AML_CLASS_EXECUTE: /* Most operators with arguments */ |
1da177e4 LT |
394 | |
395 | /* Build resolved operand stack */ | |
396 | ||
4be44fcd LB |
397 | status = acpi_ds_create_operands(walk_state, first_arg); |
398 | if (ACPI_FAILURE(status)) { | |
1da177e4 LT |
399 | goto cleanup; |
400 | } | |
401 | ||
1da177e4 LT |
402 | /* |
403 | * All opcodes require operand resolution, with the only exceptions | |
404 | * being the object_type and size_of operators. | |
405 | */ | |
406 | if (!(walk_state->op_info->flags & AML_NO_OPERAND_RESOLVE)) { | |
52fc0b02 | 407 | |
1da177e4 LT |
408 | /* Resolve all operands */ |
409 | ||
4be44fcd LB |
410 | status = acpi_ex_resolve_operands(walk_state->opcode, |
411 | &(walk_state-> | |
412 | operands | |
413 | [walk_state-> | |
414 | num_operands - 1]), | |
415 | walk_state); | |
1da177e4 LT |
416 | } |
417 | ||
4be44fcd | 418 | if (ACPI_SUCCESS(status)) { |
1da177e4 LT |
419 | /* |
420 | * Dispatch the request to the appropriate interpreter handler | |
421 | * routine. There is one routine per opcode "type" based upon the | |
422 | * number of opcode arguments and return type. | |
423 | */ | |
4be44fcd LB |
424 | status = |
425 | acpi_gbl_op_type_dispatch[op_type] (walk_state); | |
426 | } else { | |
1da177e4 | 427 | /* |
b229cf92 | 428 | * Treat constructs of the form "Store(LocalX,LocalX)" as noops when the |
1da177e4 LT |
429 | * Local is uninitialized. |
430 | */ | |
4be44fcd LB |
431 | if ((status == AE_AML_UNINITIALIZED_LOCAL) && |
432 | (walk_state->opcode == AML_STORE_OP) && | |
433 | (walk_state->operands[0]->common.type == | |
434 | ACPI_TYPE_LOCAL_REFERENCE) | |
435 | && (walk_state->operands[1]->common.type == | |
436 | ACPI_TYPE_LOCAL_REFERENCE) | |
1044f1f6 BM |
437 | && (walk_state->operands[0]->reference.class == |
438 | walk_state->operands[1]->reference.class) | |
439 | && (walk_state->operands[0]->reference.value == | |
440 | walk_state->operands[1]->reference.value)) { | |
1da177e4 | 441 | status = AE_OK; |
4be44fcd | 442 | } else { |
b8e4d893 BM |
443 | ACPI_EXCEPTION((AE_INFO, status, |
444 | "While resolving operands for [%s]", | |
445 | acpi_ps_get_opcode_name | |
446 | (walk_state->opcode))); | |
1da177e4 LT |
447 | } |
448 | } | |
449 | ||
450 | /* Always delete the argument objects and clear the operand stack */ | |
451 | ||
4be44fcd | 452 | acpi_ds_clear_operands(walk_state); |
1da177e4 LT |
453 | |
454 | /* | |
455 | * If a result object was returned from above, push it on the | |
456 | * current result stack | |
457 | */ | |
4be44fcd LB |
458 | if (ACPI_SUCCESS(status) && walk_state->result_obj) { |
459 | status = | |
460 | acpi_ds_result_push(walk_state->result_obj, | |
461 | walk_state); | |
1da177e4 | 462 | } |
1da177e4 LT |
463 | break; |
464 | ||
1da177e4 LT |
465 | default: |
466 | ||
467 | switch (op_type) { | |
4be44fcd | 468 | case AML_TYPE_CONTROL: /* Type 1 opcode, IF/ELSE/WHILE/NOOP */ |
1da177e4 LT |
469 | |
470 | /* 1 Operand, 0 external_result, 0 internal_result */ | |
471 | ||
4be44fcd | 472 | status = acpi_ds_exec_end_control_op(walk_state, op); |
1da177e4 | 473 | |
1da177e4 LT |
474 | break; |
475 | ||
1da177e4 LT |
476 | case AML_TYPE_METHOD_CALL: |
477 | ||
478 | /* | |
479 | * If the method is referenced from within a package | |
480 | * declaration, it is not a invocation of the method, just | |
481 | * a reference to it. | |
482 | */ | |
483 | if ((op->asl.parent) && | |
4be44fcd LB |
484 | ((op->asl.parent->asl.aml_opcode == AML_PACKAGE_OP) |
485 | || (op->asl.parent->asl.aml_opcode == | |
486 | AML_VAR_PACKAGE_OP))) { | |
487 | ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH, | |
488 | "Method Reference in a Package, Op=%p\n", | |
489 | op)); | |
967440e3 | 490 | |
4be44fcd LB |
491 | op->common.node = |
492 | (struct acpi_namespace_node *)op->asl.value. | |
b160987d | 493 | arg->asl.node; |
4be44fcd LB |
494 | acpi_ut_add_reference(op->asl.value.arg->asl. |
495 | node->object); | |
496 | return_ACPI_STATUS(AE_OK); | |
1da177e4 LT |
497 | } |
498 | ||
4be44fcd LB |
499 | ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH, |
500 | "Method invocation, Op=%p\n", op)); | |
1da177e4 LT |
501 | |
502 | /* | |
503 | * (AML_METHODCALL) Op->Asl.Value.Arg->Asl.Node contains | |
504 | * the method Node pointer | |
505 | */ | |
506 | /* next_op points to the op that holds the method name */ | |
507 | ||
508 | next_op = first_arg; | |
509 | ||
510 | /* next_op points to first argument op */ | |
511 | ||
512 | next_op = next_op->common.next; | |
513 | ||
514 | /* | |
515 | * Get the method's arguments and put them on the operand stack | |
516 | */ | |
4be44fcd LB |
517 | status = acpi_ds_create_operands(walk_state, next_op); |
518 | if (ACPI_FAILURE(status)) { | |
1da177e4 LT |
519 | break; |
520 | } | |
521 | ||
522 | /* | |
523 | * Since the operands will be passed to another control method, | |
524 | * we must resolve all local references here (Local variables, | |
525 | * arguments to *this* method, etc.) | |
526 | */ | |
4be44fcd LB |
527 | status = acpi_ds_resolve_operands(walk_state); |
528 | if (ACPI_FAILURE(status)) { | |
52fc0b02 | 529 | |
1da177e4 LT |
530 | /* On error, clear all resolved operands */ |
531 | ||
4be44fcd | 532 | acpi_ds_clear_operands(walk_state); |
1da177e4 LT |
533 | break; |
534 | } | |
535 | ||
536 | /* | |
537 | * Tell the walk loop to preempt this running method and | |
538 | * execute the new method | |
539 | */ | |
540 | status = AE_CTRL_TRANSFER; | |
541 | ||
542 | /* | |
543 | * Return now; we don't want to disturb anything, | |
544 | * especially the operand count! | |
545 | */ | |
4be44fcd | 546 | return_ACPI_STATUS(status); |
1da177e4 LT |
547 | |
548 | case AML_TYPE_CREATE_FIELD: | |
549 | ||
4be44fcd | 550 | ACPI_DEBUG_PRINT((ACPI_DB_EXEC, |
b229cf92 | 551 | "Executing CreateField Buffer/Index Op=%p\n", |
4be44fcd | 552 | op)); |
1da177e4 | 553 | |
4be44fcd LB |
554 | status = acpi_ds_load2_end_op(walk_state); |
555 | if (ACPI_FAILURE(status)) { | |
1da177e4 LT |
556 | break; |
557 | } | |
558 | ||
4be44fcd LB |
559 | status = |
560 | acpi_ds_eval_buffer_field_operands(walk_state, op); | |
1da177e4 LT |
561 | break; |
562 | ||
1da177e4 LT |
563 | case AML_TYPE_CREATE_OBJECT: |
564 | ||
4be44fcd | 565 | ACPI_DEBUG_PRINT((ACPI_DB_EXEC, |
b229cf92 | 566 | "Executing CreateObject (Buffer/Package) Op=%p\n", |
4be44fcd | 567 | op)); |
1da177e4 LT |
568 | |
569 | switch (op->common.parent->common.aml_opcode) { | |
570 | case AML_NAME_OP: | |
571 | ||
572 | /* | |
44f6c012 RM |
573 | * Put the Node on the object stack (Contains the ACPI Name |
574 | * of this object) | |
1da177e4 | 575 | */ |
4be44fcd LB |
576 | walk_state->operands[0] = |
577 | (void *)op->common.parent->common.node; | |
1da177e4 LT |
578 | walk_state->num_operands = 1; |
579 | ||
4be44fcd LB |
580 | status = acpi_ds_create_node(walk_state, |
581 | op->common.parent-> | |
582 | common.node, | |
583 | op->common.parent); | |
584 | if (ACPI_FAILURE(status)) { | |
1da177e4 LT |
585 | break; |
586 | } | |
587 | ||
588 | /* Fall through */ | |
589 | /*lint -fallthrough */ | |
590 | ||
591 | case AML_INT_EVAL_SUBTREE_OP: | |
592 | ||
4be44fcd LB |
593 | status = |
594 | acpi_ds_eval_data_object_operands | |
595 | (walk_state, op, | |
596 | acpi_ns_get_attached_object(op->common. | |
597 | parent->common. | |
598 | node)); | |
1da177e4 LT |
599 | break; |
600 | ||
601 | default: | |
602 | ||
4be44fcd LB |
603 | status = |
604 | acpi_ds_eval_data_object_operands | |
605 | (walk_state, op, NULL); | |
1da177e4 LT |
606 | break; |
607 | } | |
608 | ||
1da177e4 LT |
609 | /* |
610 | * If a result object was returned from above, push it on the | |
611 | * current result stack | |
612 | */ | |
44f6c012 | 613 | if (walk_state->result_obj) { |
4be44fcd LB |
614 | status = |
615 | acpi_ds_result_push(walk_state->result_obj, | |
616 | walk_state); | |
1da177e4 LT |
617 | } |
618 | break; | |
619 | ||
1da177e4 LT |
620 | case AML_TYPE_NAMED_FIELD: |
621 | case AML_TYPE_NAMED_COMPLEX: | |
622 | case AML_TYPE_NAMED_SIMPLE: | |
623 | case AML_TYPE_NAMED_NO_OBJ: | |
624 | ||
4be44fcd LB |
625 | status = acpi_ds_load2_end_op(walk_state); |
626 | if (ACPI_FAILURE(status)) { | |
1da177e4 LT |
627 | break; |
628 | } | |
629 | ||
630 | if (op->common.aml_opcode == AML_REGION_OP) { | |
4be44fcd | 631 | ACPI_DEBUG_PRINT((ACPI_DB_EXEC, |
b229cf92 | 632 | "Executing OpRegion Address/Length Op=%p\n", |
4be44fcd LB |
633 | op)); |
634 | ||
635 | status = | |
636 | acpi_ds_eval_region_operands(walk_state, | |
637 | op); | |
638 | if (ACPI_FAILURE(status)) { | |
1da177e4 LT |
639 | break; |
640 | } | |
941f48bb LM |
641 | } else if (op->common.aml_opcode == AML_DATA_REGION_OP) { |
642 | ACPI_DEBUG_PRINT((ACPI_DB_EXEC, | |
643 | "Executing DataTableRegion Strings Op=%p\n", | |
644 | op)); | |
645 | ||
646 | status = | |
647 | acpi_ds_eval_table_region_operands | |
648 | (walk_state, op); | |
649 | if (ACPI_FAILURE(status)) { | |
650 | break; | |
651 | } | |
ef805d95 LM |
652 | } else if (op->common.aml_opcode == AML_BANK_FIELD_OP) { |
653 | ACPI_DEBUG_PRINT((ACPI_DB_EXEC, | |
654 | "Executing BankField Op=%p\n", | |
655 | op)); | |
656 | ||
657 | status = | |
658 | acpi_ds_eval_bank_field_operands(walk_state, | |
659 | op); | |
660 | if (ACPI_FAILURE(status)) { | |
661 | break; | |
662 | } | |
1da177e4 | 663 | } |
1da177e4 LT |
664 | break; |
665 | ||
1da177e4 LT |
666 | case AML_TYPE_UNDEFINED: |
667 | ||
b8e4d893 BM |
668 | ACPI_ERROR((AE_INFO, |
669 | "Undefined opcode type Op=%p", op)); | |
4be44fcd | 670 | return_ACPI_STATUS(AE_NOT_IMPLEMENTED); |
1da177e4 LT |
671 | |
672 | case AML_TYPE_BOGUS: | |
673 | ||
4be44fcd LB |
674 | ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH, |
675 | "Internal opcode=%X type Op=%p\n", | |
676 | walk_state->opcode, op)); | |
1da177e4 LT |
677 | break; |
678 | ||
1da177e4 LT |
679 | default: |
680 | ||
b8e4d893 BM |
681 | ACPI_ERROR((AE_INFO, |
682 | "Unimplemented opcode, class=%X type=%X Opcode=%X Op=%p", | |
683 | op_class, op_type, op->common.aml_opcode, | |
684 | op)); | |
1da177e4 LT |
685 | |
686 | status = AE_NOT_IMPLEMENTED; | |
687 | break; | |
688 | } | |
689 | } | |
690 | ||
691 | /* | |
692 | * ACPI 2.0 support for 64-bit integers: Truncate numeric | |
693 | * result value if we are executing from a 32-bit ACPI table | |
694 | */ | |
4be44fcd | 695 | acpi_ex_truncate_for32bit_table(walk_state->result_obj); |
1da177e4 LT |
696 | |
697 | /* | |
698 | * Check if we just completed the evaluation of a | |
699 | * conditional predicate | |
700 | */ | |
4be44fcd LB |
701 | if ((ACPI_SUCCESS(status)) && |
702 | (walk_state->control_state) && | |
703 | (walk_state->control_state->common.state == | |
704 | ACPI_CONTROL_PREDICATE_EXECUTING) && | |
705 | (walk_state->control_state->control.predicate_op == op)) { | |
706 | status = | |
707 | acpi_ds_get_predicate_value(walk_state, | |
708 | walk_state->result_obj); | |
1da177e4 LT |
709 | walk_state->result_obj = NULL; |
710 | } | |
711 | ||
4be44fcd | 712 | cleanup: |
1da177e4 | 713 | |
1da177e4 | 714 | if (walk_state->result_obj) { |
52fc0b02 | 715 | |
1da177e4 LT |
716 | /* Break to debugger to display result */ |
717 | ||
4be44fcd LB |
718 | ACPI_DEBUGGER_EXEC(acpi_db_display_result_object |
719 | (walk_state->result_obj, walk_state)); | |
1da177e4 LT |
720 | |
721 | /* | |
722 | * Delete the result op if and only if: | |
723 | * Parent will not use the result -- such as any | |
724 | * non-nested type2 op in a method (parent will be method) | |
725 | */ | |
4be44fcd LB |
726 | acpi_ds_delete_result_if_not_used(op, walk_state->result_obj, |
727 | walk_state); | |
1da177e4 | 728 | } |
1da177e4 LT |
729 | #ifdef _UNDER_DEVELOPMENT |
730 | ||
731 | if (walk_state->parser_state.aml == walk_state->parser_state.aml_end) { | |
4be44fcd | 732 | acpi_db_method_end(walk_state); |
1da177e4 LT |
733 | } |
734 | #endif | |
735 | ||
defba1d8 | 736 | /* Invoke exception handler on error */ |
1da177e4 | 737 | |
4be44fcd | 738 | if (ACPI_FAILURE(status)) { |
defba1d8 | 739 | status = acpi_ds_method_error(status, walk_state); |
1da177e4 | 740 | } |
1da177e4 | 741 | |
defba1d8 BM |
742 | /* Always clear the object stack */ |
743 | ||
744 | walk_state->num_operands = 0; | |
4be44fcd | 745 | return_ACPI_STATUS(status); |
1da177e4 | 746 | } |