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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 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> | |
1da177e4 | 52 | |
1da177e4 | 53 | #define _COMPONENT ACPI_DISPATCHER |
4be44fcd | 54 | ACPI_MODULE_NAME("dswexec") |
1da177e4 LT |
55 | |
56 | /* | |
57 | * Dispatch table for opcode classes | |
58 | */ | |
4be44fcd LB |
59 | static ACPI_EXECUTE_OP acpi_gbl_op_type_dispatch[] = { |
60 | acpi_ex_opcode_0A_0T_1R, | |
61 | acpi_ex_opcode_1A_0T_0R, | |
62 | acpi_ex_opcode_1A_0T_1R, | |
63 | acpi_ex_opcode_1A_1T_0R, | |
64 | acpi_ex_opcode_1A_1T_1R, | |
65 | acpi_ex_opcode_2A_0T_0R, | |
66 | acpi_ex_opcode_2A_0T_1R, | |
67 | acpi_ex_opcode_2A_1T_1R, | |
68 | acpi_ex_opcode_2A_2T_1R, | |
69 | acpi_ex_opcode_3A_0T_0R, | |
70 | acpi_ex_opcode_3A_1T_1R, | |
71 | acpi_ex_opcode_6A_0T_1R | |
72 | }; | |
44f6c012 | 73 | |
1da177e4 LT |
74 | /***************************************************************************** |
75 | * | |
76 | * FUNCTION: acpi_ds_get_predicate_value | |
77 | * | |
78 | * PARAMETERS: walk_state - Current state of the parse tree walk | |
44f6c012 | 79 | * result_obj - if non-zero, pop result from result stack |
1da177e4 LT |
80 | * |
81 | * RETURN: Status | |
82 | * | |
83 | * DESCRIPTION: Get the result of a predicate evaluation | |
84 | * | |
85 | ****************************************************************************/ | |
86 | ||
87 | acpi_status | |
4be44fcd LB |
88 | acpi_ds_get_predicate_value(struct acpi_walk_state *walk_state, |
89 | union acpi_operand_object *result_obj) | |
90 | { | |
91 | acpi_status status = AE_OK; | |
92 | union acpi_operand_object *obj_desc; | |
93 | union acpi_operand_object *local_obj_desc = NULL; | |
1da177e4 | 94 | |
b229cf92 | 95 | ACPI_FUNCTION_TRACE_PTR(ds_get_predicate_value, walk_state); |
1da177e4 LT |
96 | |
97 | walk_state->control_state->common.state = 0; | |
98 | ||
99 | if (result_obj) { | |
4be44fcd LB |
100 | status = acpi_ds_result_pop(&obj_desc, walk_state); |
101 | if (ACPI_FAILURE(status)) { | |
b8e4d893 BM |
102 | ACPI_EXCEPTION((AE_INFO, status, |
103 | "Could not get result from predicate evaluation")); | |
1da177e4 | 104 | |
4be44fcd | 105 | return_ACPI_STATUS(status); |
1da177e4 | 106 | } |
4be44fcd LB |
107 | } else { |
108 | status = acpi_ds_create_operand(walk_state, walk_state->op, 0); | |
109 | if (ACPI_FAILURE(status)) { | |
110 | return_ACPI_STATUS(status); | |
1da177e4 LT |
111 | } |
112 | ||
4be44fcd LB |
113 | status = |
114 | acpi_ex_resolve_to_value(&walk_state->operands[0], | |
115 | walk_state); | |
116 | if (ACPI_FAILURE(status)) { | |
117 | return_ACPI_STATUS(status); | |
1da177e4 LT |
118 | } |
119 | ||
4be44fcd | 120 | obj_desc = walk_state->operands[0]; |
1da177e4 LT |
121 | } |
122 | ||
123 | if (!obj_desc) { | |
b8e4d893 | 124 | ACPI_ERROR((AE_INFO, |
b229cf92 | 125 | "No predicate ObjDesc=%p State=%p", |
b8e4d893 | 126 | obj_desc, walk_state)); |
1da177e4 | 127 | |
4be44fcd | 128 | return_ACPI_STATUS(AE_AML_NO_OPERAND); |
1da177e4 LT |
129 | } |
130 | ||
131 | /* | |
132 | * Result of predicate evaluation must be an Integer | |
133 | * object. Implicitly convert the argument if necessary. | |
134 | */ | |
4be44fcd LB |
135 | status = acpi_ex_convert_to_integer(obj_desc, &local_obj_desc, 16); |
136 | if (ACPI_FAILURE(status)) { | |
1da177e4 LT |
137 | goto cleanup; |
138 | } | |
139 | ||
4be44fcd | 140 | if (ACPI_GET_OBJECT_TYPE(local_obj_desc) != ACPI_TYPE_INTEGER) { |
b8e4d893 | 141 | ACPI_ERROR((AE_INFO, |
b229cf92 | 142 | "Bad predicate (not an integer) ObjDesc=%p State=%p Type=%X", |
b8e4d893 BM |
143 | obj_desc, walk_state, |
144 | ACPI_GET_OBJECT_TYPE(obj_desc))); | |
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 | ||
4be44fcd | 169 | cleanup: |
1da177e4 | 170 | |
4be44fcd LB |
171 | ACPI_DEBUG_PRINT((ACPI_DB_EXEC, "Completed a predicate eval=%X Op=%p\n", |
172 | walk_state->control_state->common.value, | |
173 | walk_state->op)); | |
1da177e4 | 174 | |
4be44fcd | 175 | /* Break to debugger to display result */ |
1da177e4 | 176 | |
4be44fcd LB |
177 | ACPI_DEBUGGER_EXEC(acpi_db_display_result_object |
178 | (local_obj_desc, walk_state)); | |
1da177e4 LT |
179 | |
180 | /* | |
181 | * Delete the predicate result object (we know that | |
182 | * we don't need it anymore) | |
183 | */ | |
184 | if (local_obj_desc != obj_desc) { | |
4be44fcd | 185 | acpi_ut_remove_reference(local_obj_desc); |
1da177e4 | 186 | } |
4be44fcd | 187 | acpi_ut_remove_reference(obj_desc); |
1da177e4 LT |
188 | |
189 | walk_state->control_state->common.state = ACPI_CONTROL_NORMAL; | |
4be44fcd | 190 | return_ACPI_STATUS(status); |
1da177e4 LT |
191 | } |
192 | ||
1da177e4 LT |
193 | /***************************************************************************** |
194 | * | |
195 | * FUNCTION: acpi_ds_exec_begin_op | |
196 | * | |
197 | * PARAMETERS: walk_state - Current state of the parse tree walk | |
44f6c012 | 198 | * out_op - Where to return op if a new one is created |
1da177e4 LT |
199 | * |
200 | * RETURN: Status | |
201 | * | |
202 | * DESCRIPTION: Descending callback used during the execution of control | |
203 | * methods. This is where most operators and operands are | |
204 | * dispatched to the interpreter. | |
205 | * | |
206 | ****************************************************************************/ | |
207 | ||
208 | acpi_status | |
4be44fcd LB |
209 | acpi_ds_exec_begin_op(struct acpi_walk_state *walk_state, |
210 | union acpi_parse_object **out_op) | |
1da177e4 | 211 | { |
4be44fcd LB |
212 | union acpi_parse_object *op; |
213 | acpi_status status = AE_OK; | |
214 | u32 opcode_class; | |
1da177e4 | 215 | |
b229cf92 | 216 | ACPI_FUNCTION_TRACE_PTR(ds_exec_begin_op, walk_state); |
1da177e4 LT |
217 | |
218 | op = walk_state->op; | |
219 | if (!op) { | |
4be44fcd LB |
220 | status = acpi_ds_load2_begin_op(walk_state, out_op); |
221 | if (ACPI_FAILURE(status)) { | |
867c9aec | 222 | goto error_exit; |
1da177e4 LT |
223 | } |
224 | ||
225 | op = *out_op; | |
226 | walk_state->op = op; | |
227 | walk_state->opcode = op->common.aml_opcode; | |
4be44fcd LB |
228 | walk_state->op_info = |
229 | acpi_ps_get_opcode_info(op->common.aml_opcode); | |
230 | ||
231 | if (acpi_ns_opens_scope(walk_state->op_info->object_type)) { | |
232 | ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH, | |
233 | "(%s) Popping scope for Op %p\n", | |
234 | acpi_ut_get_type_name(walk_state-> | |
235 | op_info-> | |
236 | object_type), | |
237 | op)); | |
238 | ||
239 | status = acpi_ds_scope_stack_pop(walk_state); | |
240 | if (ACPI_FAILURE(status)) { | |
867c9aec | 241 | goto error_exit; |
1da177e4 LT |
242 | } |
243 | } | |
244 | } | |
245 | ||
246 | if (op == walk_state->origin) { | |
247 | if (out_op) { | |
248 | *out_op = op; | |
249 | } | |
250 | ||
4be44fcd | 251 | return_ACPI_STATUS(AE_OK); |
1da177e4 LT |
252 | } |
253 | ||
254 | /* | |
255 | * If the previous opcode was a conditional, this opcode | |
256 | * must be the beginning of the associated predicate. | |
257 | * Save this knowledge in the current scope descriptor | |
258 | */ | |
259 | if ((walk_state->control_state) && | |
4be44fcd LB |
260 | (walk_state->control_state->common.state == |
261 | ACPI_CONTROL_CONDITIONAL_EXECUTING)) { | |
262 | ACPI_DEBUG_PRINT((ACPI_DB_EXEC, | |
263 | "Exec predicate Op=%p State=%p\n", op, | |
264 | walk_state)); | |
1da177e4 | 265 | |
4be44fcd LB |
266 | walk_state->control_state->common.state = |
267 | ACPI_CONTROL_PREDICATE_EXECUTING; | |
1da177e4 LT |
268 | |
269 | /* Save start of predicate */ | |
270 | ||
271 | walk_state->control_state->control.predicate_op = op; | |
272 | } | |
273 | ||
1da177e4 LT |
274 | opcode_class = walk_state->op_info->class; |
275 | ||
276 | /* We want to send namepaths to the load code */ | |
277 | ||
278 | if (op->common.aml_opcode == AML_INT_NAMEPATH_OP) { | |
279 | opcode_class = AML_CLASS_NAMED_OBJECT; | |
280 | } | |
281 | ||
282 | /* | |
283 | * Handle the opcode based upon the opcode type | |
284 | */ | |
285 | switch (opcode_class) { | |
286 | case AML_CLASS_CONTROL: | |
287 | ||
4be44fcd | 288 | status = acpi_ds_exec_begin_control_op(walk_state, op); |
1da177e4 LT |
289 | break; |
290 | ||
1da177e4 LT |
291 | case AML_CLASS_NAMED_OBJECT: |
292 | ||
4119532c | 293 | if (walk_state->walk_type & ACPI_WALK_METHOD) { |
1da177e4 | 294 | /* |
44f6c012 RM |
295 | * Found a named object declaration during method execution; |
296 | * we must enter this object into the namespace. The created | |
297 | * object is temporary and will be deleted upon completion of | |
298 | * the execution of this method. | |
1da177e4 | 299 | */ |
4be44fcd | 300 | status = acpi_ds_load2_begin_op(walk_state, NULL); |
1da177e4 LT |
301 | } |
302 | ||
1da177e4 LT |
303 | break; |
304 | ||
1da177e4 LT |
305 | case AML_CLASS_EXECUTE: |
306 | case AML_CLASS_CREATE: | |
773069d4 | 307 | |
1da177e4 LT |
308 | break; |
309 | ||
1da177e4 LT |
310 | default: |
311 | break; | |
312 | } | |
313 | ||
314 | /* Nothing to do here during method execution */ | |
315 | ||
4be44fcd | 316 | return_ACPI_STATUS(status); |
867c9aec BM |
317 | |
318 | error_exit: | |
319 | status = acpi_ds_method_error(status, walk_state); | |
320 | return_ACPI_STATUS(status); | |
1da177e4 LT |
321 | } |
322 | ||
1da177e4 LT |
323 | /***************************************************************************** |
324 | * | |
325 | * FUNCTION: acpi_ds_exec_end_op | |
326 | * | |
327 | * PARAMETERS: walk_state - Current state of the parse tree walk | |
1da177e4 LT |
328 | * |
329 | * RETURN: Status | |
330 | * | |
331 | * DESCRIPTION: Ascending callback used during the execution of control | |
332 | * methods. The only thing we really need to do here is to | |
333 | * notice the beginning of IF, ELSE, and WHILE blocks. | |
334 | * | |
335 | ****************************************************************************/ | |
336 | ||
4be44fcd | 337 | acpi_status acpi_ds_exec_end_op(struct acpi_walk_state *walk_state) |
1da177e4 | 338 | { |
4be44fcd LB |
339 | union acpi_parse_object *op; |
340 | acpi_status status = AE_OK; | |
341 | u32 op_type; | |
342 | u32 op_class; | |
343 | union acpi_parse_object *next_op; | |
344 | union acpi_parse_object *first_arg; | |
1da177e4 | 345 | |
b229cf92 | 346 | ACPI_FUNCTION_TRACE_PTR(ds_exec_end_op, walk_state); |
1da177e4 | 347 | |
4be44fcd | 348 | op = walk_state->op; |
1da177e4 LT |
349 | op_type = walk_state->op_info->type; |
350 | op_class = walk_state->op_info->class; | |
351 | ||
352 | if (op_class == AML_CLASS_UNKNOWN) { | |
b8e4d893 BM |
353 | ACPI_ERROR((AE_INFO, "Unknown opcode %X", |
354 | op->common.aml_opcode)); | |
4be44fcd | 355 | return_ACPI_STATUS(AE_NOT_IMPLEMENTED); |
1da177e4 LT |
356 | } |
357 | ||
358 | first_arg = op->common.value.arg; | |
359 | ||
360 | /* Init the walk state */ | |
361 | ||
362 | walk_state->num_operands = 0; | |
773069d4 | 363 | walk_state->operand_index = 0; |
1da177e4 LT |
364 | walk_state->return_desc = NULL; |
365 | walk_state->result_obj = NULL; | |
366 | ||
367 | /* Call debugger for single step support (DEBUG build only) */ | |
368 | ||
4be44fcd LB |
369 | ACPI_DEBUGGER_EXEC(status = |
370 | acpi_db_single_step(walk_state, op, op_class)); | |
371 | ACPI_DEBUGGER_EXEC(if (ACPI_FAILURE(status)) { | |
372 | return_ACPI_STATUS(status);} | |
373 | ) ; | |
1da177e4 LT |
374 | |
375 | /* Decode the Opcode Class */ | |
376 | ||
377 | switch (op_class) { | |
4e3156b1 BM |
378 | case AML_CLASS_ARGUMENT: /* Constants, literals, etc. */ |
379 | ||
380 | if (walk_state->opcode == AML_INT_NAMEPATH_OP) { | |
381 | status = acpi_ds_evaluate_name_path(walk_state); | |
382 | if (ACPI_FAILURE(status)) { | |
383 | goto cleanup; | |
384 | } | |
385 | } | |
1da177e4 LT |
386 | break; |
387 | ||
4e3156b1 | 388 | case AML_CLASS_EXECUTE: /* Most operators with arguments */ |
1da177e4 LT |
389 | |
390 | /* Build resolved operand stack */ | |
391 | ||
4be44fcd LB |
392 | status = acpi_ds_create_operands(walk_state, first_arg); |
393 | if (ACPI_FAILURE(status)) { | |
1da177e4 LT |
394 | goto cleanup; |
395 | } | |
396 | ||
1da177e4 LT |
397 | /* |
398 | * All opcodes require operand resolution, with the only exceptions | |
399 | * being the object_type and size_of operators. | |
400 | */ | |
401 | if (!(walk_state->op_info->flags & AML_NO_OPERAND_RESOLVE)) { | |
52fc0b02 | 402 | |
1da177e4 LT |
403 | /* Resolve all operands */ |
404 | ||
4be44fcd LB |
405 | status = acpi_ex_resolve_operands(walk_state->opcode, |
406 | &(walk_state-> | |
407 | operands | |
408 | [walk_state-> | |
409 | num_operands - 1]), | |
410 | walk_state); | |
1da177e4 LT |
411 | } |
412 | ||
4be44fcd | 413 | if (ACPI_SUCCESS(status)) { |
1da177e4 LT |
414 | /* |
415 | * Dispatch the request to the appropriate interpreter handler | |
416 | * routine. There is one routine per opcode "type" based upon the | |
417 | * number of opcode arguments and return type. | |
418 | */ | |
4be44fcd LB |
419 | status = |
420 | acpi_gbl_op_type_dispatch[op_type] (walk_state); | |
421 | } else { | |
1da177e4 | 422 | /* |
b229cf92 | 423 | * Treat constructs of the form "Store(LocalX,LocalX)" as noops when the |
1da177e4 LT |
424 | * Local is uninitialized. |
425 | */ | |
4be44fcd LB |
426 | if ((status == AE_AML_UNINITIALIZED_LOCAL) && |
427 | (walk_state->opcode == AML_STORE_OP) && | |
428 | (walk_state->operands[0]->common.type == | |
429 | ACPI_TYPE_LOCAL_REFERENCE) | |
430 | && (walk_state->operands[1]->common.type == | |
431 | ACPI_TYPE_LOCAL_REFERENCE) | |
432 | && (walk_state->operands[0]->reference.opcode == | |
433 | walk_state->operands[1]->reference.opcode) | |
434 | && (walk_state->operands[0]->reference.offset == | |
435 | walk_state->operands[1]->reference.offset)) { | |
1da177e4 | 436 | status = AE_OK; |
4be44fcd | 437 | } else { |
b8e4d893 BM |
438 | ACPI_EXCEPTION((AE_INFO, status, |
439 | "While resolving operands for [%s]", | |
440 | acpi_ps_get_opcode_name | |
441 | (walk_state->opcode))); | |
1da177e4 LT |
442 | } |
443 | } | |
444 | ||
445 | /* Always delete the argument objects and clear the operand stack */ | |
446 | ||
4be44fcd | 447 | acpi_ds_clear_operands(walk_state); |
1da177e4 LT |
448 | |
449 | /* | |
450 | * If a result object was returned from above, push it on the | |
451 | * current result stack | |
452 | */ | |
4be44fcd LB |
453 | if (ACPI_SUCCESS(status) && walk_state->result_obj) { |
454 | status = | |
455 | acpi_ds_result_push(walk_state->result_obj, | |
456 | walk_state); | |
1da177e4 | 457 | } |
1da177e4 LT |
458 | break; |
459 | ||
1da177e4 LT |
460 | default: |
461 | ||
462 | switch (op_type) { | |
4be44fcd | 463 | case AML_TYPE_CONTROL: /* Type 1 opcode, IF/ELSE/WHILE/NOOP */ |
1da177e4 LT |
464 | |
465 | /* 1 Operand, 0 external_result, 0 internal_result */ | |
466 | ||
4be44fcd | 467 | status = acpi_ds_exec_end_control_op(walk_state, op); |
1da177e4 | 468 | |
1da177e4 LT |
469 | break; |
470 | ||
1da177e4 LT |
471 | case AML_TYPE_METHOD_CALL: |
472 | ||
473 | /* | |
474 | * If the method is referenced from within a package | |
475 | * declaration, it is not a invocation of the method, just | |
476 | * a reference to it. | |
477 | */ | |
478 | if ((op->asl.parent) && | |
4be44fcd LB |
479 | ((op->asl.parent->asl.aml_opcode == AML_PACKAGE_OP) |
480 | || (op->asl.parent->asl.aml_opcode == | |
481 | AML_VAR_PACKAGE_OP))) { | |
482 | ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH, | |
483 | "Method Reference in a Package, Op=%p\n", | |
484 | op)); | |
967440e3 | 485 | |
4be44fcd LB |
486 | op->common.node = |
487 | (struct acpi_namespace_node *)op->asl.value. | |
b160987d | 488 | arg->asl.node; |
4be44fcd LB |
489 | acpi_ut_add_reference(op->asl.value.arg->asl. |
490 | node->object); | |
491 | return_ACPI_STATUS(AE_OK); | |
1da177e4 LT |
492 | } |
493 | ||
4be44fcd LB |
494 | ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH, |
495 | "Method invocation, Op=%p\n", op)); | |
1da177e4 LT |
496 | |
497 | /* | |
498 | * (AML_METHODCALL) Op->Asl.Value.Arg->Asl.Node contains | |
499 | * the method Node pointer | |
500 | */ | |
501 | /* next_op points to the op that holds the method name */ | |
502 | ||
503 | next_op = first_arg; | |
504 | ||
505 | /* next_op points to first argument op */ | |
506 | ||
507 | next_op = next_op->common.next; | |
508 | ||
509 | /* | |
510 | * Get the method's arguments and put them on the operand stack | |
511 | */ | |
4be44fcd LB |
512 | status = acpi_ds_create_operands(walk_state, next_op); |
513 | if (ACPI_FAILURE(status)) { | |
1da177e4 LT |
514 | break; |
515 | } | |
516 | ||
517 | /* | |
518 | * Since the operands will be passed to another control method, | |
519 | * we must resolve all local references here (Local variables, | |
520 | * arguments to *this* method, etc.) | |
521 | */ | |
4be44fcd LB |
522 | status = acpi_ds_resolve_operands(walk_state); |
523 | if (ACPI_FAILURE(status)) { | |
52fc0b02 | 524 | |
1da177e4 LT |
525 | /* On error, clear all resolved operands */ |
526 | ||
4be44fcd | 527 | acpi_ds_clear_operands(walk_state); |
1da177e4 LT |
528 | break; |
529 | } | |
530 | ||
531 | /* | |
532 | * Tell the walk loop to preempt this running method and | |
533 | * execute the new method | |
534 | */ | |
535 | status = AE_CTRL_TRANSFER; | |
536 | ||
537 | /* | |
538 | * Return now; we don't want to disturb anything, | |
539 | * especially the operand count! | |
540 | */ | |
4be44fcd | 541 | return_ACPI_STATUS(status); |
1da177e4 LT |
542 | |
543 | case AML_TYPE_CREATE_FIELD: | |
544 | ||
4be44fcd | 545 | ACPI_DEBUG_PRINT((ACPI_DB_EXEC, |
b229cf92 | 546 | "Executing CreateField Buffer/Index Op=%p\n", |
4be44fcd | 547 | op)); |
1da177e4 | 548 | |
4be44fcd LB |
549 | status = acpi_ds_load2_end_op(walk_state); |
550 | if (ACPI_FAILURE(status)) { | |
1da177e4 LT |
551 | break; |
552 | } | |
553 | ||
4be44fcd LB |
554 | status = |
555 | acpi_ds_eval_buffer_field_operands(walk_state, op); | |
1da177e4 LT |
556 | break; |
557 | ||
1da177e4 LT |
558 | case AML_TYPE_CREATE_OBJECT: |
559 | ||
4be44fcd | 560 | ACPI_DEBUG_PRINT((ACPI_DB_EXEC, |
b229cf92 | 561 | "Executing CreateObject (Buffer/Package) Op=%p\n", |
4be44fcd | 562 | op)); |
1da177e4 LT |
563 | |
564 | switch (op->common.parent->common.aml_opcode) { | |
565 | case AML_NAME_OP: | |
566 | ||
567 | /* | |
44f6c012 RM |
568 | * Put the Node on the object stack (Contains the ACPI Name |
569 | * of this object) | |
1da177e4 | 570 | */ |
4be44fcd LB |
571 | walk_state->operands[0] = |
572 | (void *)op->common.parent->common.node; | |
1da177e4 LT |
573 | walk_state->num_operands = 1; |
574 | ||
4be44fcd LB |
575 | status = acpi_ds_create_node(walk_state, |
576 | op->common.parent-> | |
577 | common.node, | |
578 | op->common.parent); | |
579 | if (ACPI_FAILURE(status)) { | |
1da177e4 LT |
580 | break; |
581 | } | |
582 | ||
583 | /* Fall through */ | |
584 | /*lint -fallthrough */ | |
585 | ||
586 | case AML_INT_EVAL_SUBTREE_OP: | |
587 | ||
4be44fcd LB |
588 | status = |
589 | acpi_ds_eval_data_object_operands | |
590 | (walk_state, op, | |
591 | acpi_ns_get_attached_object(op->common. | |
592 | parent->common. | |
593 | node)); | |
1da177e4 LT |
594 | break; |
595 | ||
596 | default: | |
597 | ||
4be44fcd LB |
598 | status = |
599 | acpi_ds_eval_data_object_operands | |
600 | (walk_state, op, NULL); | |
1da177e4 LT |
601 | break; |
602 | } | |
603 | ||
1da177e4 LT |
604 | /* |
605 | * If a result object was returned from above, push it on the | |
606 | * current result stack | |
607 | */ | |
44f6c012 | 608 | if (walk_state->result_obj) { |
4be44fcd LB |
609 | status = |
610 | acpi_ds_result_push(walk_state->result_obj, | |
611 | walk_state); | |
1da177e4 LT |
612 | } |
613 | break; | |
614 | ||
1da177e4 LT |
615 | case AML_TYPE_NAMED_FIELD: |
616 | case AML_TYPE_NAMED_COMPLEX: | |
617 | case AML_TYPE_NAMED_SIMPLE: | |
618 | case AML_TYPE_NAMED_NO_OBJ: | |
619 | ||
4be44fcd LB |
620 | status = acpi_ds_load2_end_op(walk_state); |
621 | if (ACPI_FAILURE(status)) { | |
1da177e4 LT |
622 | break; |
623 | } | |
624 | ||
625 | if (op->common.aml_opcode == AML_REGION_OP) { | |
4be44fcd | 626 | ACPI_DEBUG_PRINT((ACPI_DB_EXEC, |
b229cf92 | 627 | "Executing OpRegion Address/Length Op=%p\n", |
4be44fcd LB |
628 | op)); |
629 | ||
630 | status = | |
631 | acpi_ds_eval_region_operands(walk_state, | |
632 | op); | |
633 | if (ACPI_FAILURE(status)) { | |
1da177e4 LT |
634 | break; |
635 | } | |
941f48bb LM |
636 | } else if (op->common.aml_opcode == AML_DATA_REGION_OP) { |
637 | ACPI_DEBUG_PRINT((ACPI_DB_EXEC, | |
638 | "Executing DataTableRegion Strings Op=%p\n", | |
639 | op)); | |
640 | ||
641 | status = | |
642 | acpi_ds_eval_table_region_operands | |
643 | (walk_state, op); | |
644 | if (ACPI_FAILURE(status)) { | |
645 | break; | |
646 | } | |
ef805d95 LM |
647 | } else if (op->common.aml_opcode == AML_BANK_FIELD_OP) { |
648 | ACPI_DEBUG_PRINT((ACPI_DB_EXEC, | |
649 | "Executing BankField Op=%p\n", | |
650 | op)); | |
651 | ||
652 | status = | |
653 | acpi_ds_eval_bank_field_operands(walk_state, | |
654 | op); | |
655 | if (ACPI_FAILURE(status)) { | |
656 | break; | |
657 | } | |
1da177e4 | 658 | } |
1da177e4 LT |
659 | break; |
660 | ||
1da177e4 LT |
661 | case AML_TYPE_UNDEFINED: |
662 | ||
b8e4d893 BM |
663 | ACPI_ERROR((AE_INFO, |
664 | "Undefined opcode type Op=%p", op)); | |
4be44fcd | 665 | return_ACPI_STATUS(AE_NOT_IMPLEMENTED); |
1da177e4 LT |
666 | |
667 | case AML_TYPE_BOGUS: | |
668 | ||
4be44fcd LB |
669 | ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH, |
670 | "Internal opcode=%X type Op=%p\n", | |
671 | walk_state->opcode, op)); | |
1da177e4 LT |
672 | break; |
673 | ||
1da177e4 LT |
674 | default: |
675 | ||
b8e4d893 BM |
676 | ACPI_ERROR((AE_INFO, |
677 | "Unimplemented opcode, class=%X type=%X Opcode=%X Op=%p", | |
678 | op_class, op_type, op->common.aml_opcode, | |
679 | op)); | |
1da177e4 LT |
680 | |
681 | status = AE_NOT_IMPLEMENTED; | |
682 | break; | |
683 | } | |
684 | } | |
685 | ||
686 | /* | |
687 | * ACPI 2.0 support for 64-bit integers: Truncate numeric | |
688 | * result value if we are executing from a 32-bit ACPI table | |
689 | */ | |
4be44fcd | 690 | acpi_ex_truncate_for32bit_table(walk_state->result_obj); |
1da177e4 LT |
691 | |
692 | /* | |
693 | * Check if we just completed the evaluation of a | |
694 | * conditional predicate | |
695 | */ | |
4be44fcd LB |
696 | if ((ACPI_SUCCESS(status)) && |
697 | (walk_state->control_state) && | |
698 | (walk_state->control_state->common.state == | |
699 | ACPI_CONTROL_PREDICATE_EXECUTING) && | |
700 | (walk_state->control_state->control.predicate_op == op)) { | |
701 | status = | |
702 | acpi_ds_get_predicate_value(walk_state, | |
703 | walk_state->result_obj); | |
1da177e4 LT |
704 | walk_state->result_obj = NULL; |
705 | } | |
706 | ||
4be44fcd | 707 | cleanup: |
1da177e4 | 708 | |
1da177e4 | 709 | if (walk_state->result_obj) { |
52fc0b02 | 710 | |
1da177e4 LT |
711 | /* Break to debugger to display result */ |
712 | ||
4be44fcd LB |
713 | ACPI_DEBUGGER_EXEC(acpi_db_display_result_object |
714 | (walk_state->result_obj, walk_state)); | |
1da177e4 LT |
715 | |
716 | /* | |
717 | * Delete the result op if and only if: | |
718 | * Parent will not use the result -- such as any | |
719 | * non-nested type2 op in a method (parent will be method) | |
720 | */ | |
4be44fcd LB |
721 | acpi_ds_delete_result_if_not_used(op, walk_state->result_obj, |
722 | walk_state); | |
1da177e4 | 723 | } |
1da177e4 LT |
724 | #ifdef _UNDER_DEVELOPMENT |
725 | ||
726 | if (walk_state->parser_state.aml == walk_state->parser_state.aml_end) { | |
4be44fcd | 727 | acpi_db_method_end(walk_state); |
1da177e4 LT |
728 | } |
729 | #endif | |
730 | ||
defba1d8 | 731 | /* Invoke exception handler on error */ |
1da177e4 | 732 | |
4be44fcd | 733 | if (ACPI_FAILURE(status)) { |
defba1d8 | 734 | status = acpi_ds_method_error(status, walk_state); |
1da177e4 | 735 | } |
1da177e4 | 736 | |
defba1d8 BM |
737 | /* Always clear the object stack */ |
738 | ||
739 | walk_state->num_operands = 0; | |
4be44fcd | 740 | return_ACPI_STATUS(status); |
1da177e4 | 741 | } |