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1da177e4 LT |
1 | /****************************************************************************** |
2 | * | |
3 | * Module Name: dswexec - Dispatcher method execution callbacks; | |
4 | * dispatch to interpreter. | |
5 | * | |
6 | *****************************************************************************/ | |
7 | ||
8 | /* | |
6c9deb72 | 9 | * Copyright (C) 2000 - 2007, 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> | |
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 LB |
288 | status = acpi_ds_result_stack_push(walk_state); |
289 | if (ACPI_FAILURE(status)) { | |
867c9aec | 290 | goto error_exit; |
1da177e4 LT |
291 | } |
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 | ||
308 | if (op->common.aml_opcode == AML_REGION_OP) { | |
4be44fcd | 309 | status = acpi_ds_result_stack_push(walk_state); |
1da177e4 LT |
310 | } |
311 | break; | |
312 | ||
1da177e4 LT |
313 | case AML_CLASS_EXECUTE: |
314 | case AML_CLASS_CREATE: | |
1da177e4 | 315 | /* |
f6dd9221 | 316 | * Most operators with arguments (except create_xxx_field operators) |
1da177e4 LT |
317 | * Start a new result/operand state |
318 | */ | |
f6dd9221 | 319 | if (walk_state->op_info->object_type != ACPI_TYPE_BUFFER_FIELD) { |
defba1d8 BM |
320 | status = acpi_ds_result_stack_push(walk_state); |
321 | } | |
1da177e4 LT |
322 | break; |
323 | ||
1da177e4 LT |
324 | default: |
325 | break; | |
326 | } | |
327 | ||
328 | /* Nothing to do here during method execution */ | |
329 | ||
4be44fcd | 330 | return_ACPI_STATUS(status); |
867c9aec BM |
331 | |
332 | error_exit: | |
333 | status = acpi_ds_method_error(status, walk_state); | |
334 | return_ACPI_STATUS(status); | |
1da177e4 LT |
335 | } |
336 | ||
1da177e4 LT |
337 | /***************************************************************************** |
338 | * | |
339 | * FUNCTION: acpi_ds_exec_end_op | |
340 | * | |
341 | * PARAMETERS: walk_state - Current state of the parse tree walk | |
1da177e4 LT |
342 | * |
343 | * RETURN: Status | |
344 | * | |
345 | * DESCRIPTION: Ascending callback used during the execution of control | |
346 | * methods. The only thing we really need to do here is to | |
347 | * notice the beginning of IF, ELSE, and WHILE blocks. | |
348 | * | |
349 | ****************************************************************************/ | |
350 | ||
4be44fcd | 351 | acpi_status acpi_ds_exec_end_op(struct acpi_walk_state *walk_state) |
1da177e4 | 352 | { |
4be44fcd LB |
353 | union acpi_parse_object *op; |
354 | acpi_status status = AE_OK; | |
355 | u32 op_type; | |
356 | u32 op_class; | |
357 | union acpi_parse_object *next_op; | |
358 | union acpi_parse_object *first_arg; | |
1da177e4 | 359 | |
b229cf92 | 360 | ACPI_FUNCTION_TRACE_PTR(ds_exec_end_op, walk_state); |
1da177e4 | 361 | |
4be44fcd | 362 | op = walk_state->op; |
1da177e4 LT |
363 | op_type = walk_state->op_info->type; |
364 | op_class = walk_state->op_info->class; | |
365 | ||
366 | if (op_class == AML_CLASS_UNKNOWN) { | |
b8e4d893 BM |
367 | ACPI_ERROR((AE_INFO, "Unknown opcode %X", |
368 | op->common.aml_opcode)); | |
4be44fcd | 369 | return_ACPI_STATUS(AE_NOT_IMPLEMENTED); |
1da177e4 LT |
370 | } |
371 | ||
372 | first_arg = op->common.value.arg; | |
373 | ||
374 | /* Init the walk state */ | |
375 | ||
376 | walk_state->num_operands = 0; | |
377 | walk_state->return_desc = NULL; | |
378 | walk_state->result_obj = NULL; | |
379 | ||
380 | /* Call debugger for single step support (DEBUG build only) */ | |
381 | ||
4be44fcd LB |
382 | ACPI_DEBUGGER_EXEC(status = |
383 | acpi_db_single_step(walk_state, op, op_class)); | |
384 | ACPI_DEBUGGER_EXEC(if (ACPI_FAILURE(status)) { | |
385 | return_ACPI_STATUS(status);} | |
386 | ) ; | |
1da177e4 LT |
387 | |
388 | /* Decode the Opcode Class */ | |
389 | ||
390 | switch (op_class) { | |
4be44fcd | 391 | case AML_CLASS_ARGUMENT: /* constants, literals, etc. - do nothing */ |
1da177e4 LT |
392 | break; |
393 | ||
4be44fcd | 394 | case AML_CLASS_EXECUTE: /* most operators with arguments */ |
1da177e4 LT |
395 | |
396 | /* Build resolved operand stack */ | |
397 | ||
4be44fcd LB |
398 | status = acpi_ds_create_operands(walk_state, first_arg); |
399 | if (ACPI_FAILURE(status)) { | |
1da177e4 LT |
400 | goto cleanup; |
401 | } | |
402 | ||
403 | /* Done with this result state (Now that operand stack is built) */ | |
404 | ||
4be44fcd LB |
405 | status = acpi_ds_result_stack_pop(walk_state); |
406 | if (ACPI_FAILURE(status)) { | |
1da177e4 LT |
407 | goto cleanup; |
408 | } | |
409 | ||
410 | /* | |
411 | * All opcodes require operand resolution, with the only exceptions | |
412 | * being the object_type and size_of operators. | |
413 | */ | |
414 | if (!(walk_state->op_info->flags & AML_NO_OPERAND_RESOLVE)) { | |
52fc0b02 | 415 | |
1da177e4 LT |
416 | /* Resolve all operands */ |
417 | ||
4be44fcd LB |
418 | status = acpi_ex_resolve_operands(walk_state->opcode, |
419 | &(walk_state-> | |
420 | operands | |
421 | [walk_state-> | |
422 | num_operands - 1]), | |
423 | walk_state); | |
424 | if (ACPI_SUCCESS(status)) { | |
425 | ACPI_DUMP_OPERANDS(ACPI_WALK_OPERANDS, | |
426 | ACPI_IMODE_EXECUTE, | |
427 | acpi_ps_get_opcode_name | |
428 | (walk_state->opcode), | |
429 | walk_state->num_operands, | |
b229cf92 | 430 | "after ExResolveOperands"); |
1da177e4 LT |
431 | } |
432 | } | |
433 | ||
4be44fcd | 434 | if (ACPI_SUCCESS(status)) { |
1da177e4 LT |
435 | /* |
436 | * Dispatch the request to the appropriate interpreter handler | |
437 | * routine. There is one routine per opcode "type" based upon the | |
438 | * number of opcode arguments and return type. | |
439 | */ | |
4be44fcd LB |
440 | status = |
441 | acpi_gbl_op_type_dispatch[op_type] (walk_state); | |
442 | } else { | |
1da177e4 | 443 | /* |
b229cf92 | 444 | * Treat constructs of the form "Store(LocalX,LocalX)" as noops when the |
1da177e4 LT |
445 | * Local is uninitialized. |
446 | */ | |
4be44fcd LB |
447 | if ((status == AE_AML_UNINITIALIZED_LOCAL) && |
448 | (walk_state->opcode == AML_STORE_OP) && | |
449 | (walk_state->operands[0]->common.type == | |
450 | ACPI_TYPE_LOCAL_REFERENCE) | |
451 | && (walk_state->operands[1]->common.type == | |
452 | ACPI_TYPE_LOCAL_REFERENCE) | |
453 | && (walk_state->operands[0]->reference.opcode == | |
454 | walk_state->operands[1]->reference.opcode) | |
455 | && (walk_state->operands[0]->reference.offset == | |
456 | walk_state->operands[1]->reference.offset)) { | |
1da177e4 | 457 | status = AE_OK; |
4be44fcd | 458 | } else { |
b8e4d893 BM |
459 | ACPI_EXCEPTION((AE_INFO, status, |
460 | "While resolving operands for [%s]", | |
461 | acpi_ps_get_opcode_name | |
462 | (walk_state->opcode))); | |
1da177e4 LT |
463 | } |
464 | } | |
465 | ||
466 | /* Always delete the argument objects and clear the operand stack */ | |
467 | ||
4be44fcd | 468 | acpi_ds_clear_operands(walk_state); |
1da177e4 LT |
469 | |
470 | /* | |
471 | * If a result object was returned from above, push it on the | |
472 | * current result stack | |
473 | */ | |
4be44fcd LB |
474 | if (ACPI_SUCCESS(status) && walk_state->result_obj) { |
475 | status = | |
476 | acpi_ds_result_push(walk_state->result_obj, | |
477 | walk_state); | |
1da177e4 | 478 | } |
1da177e4 LT |
479 | break; |
480 | ||
1da177e4 LT |
481 | default: |
482 | ||
483 | switch (op_type) { | |
4be44fcd | 484 | case AML_TYPE_CONTROL: /* Type 1 opcode, IF/ELSE/WHILE/NOOP */ |
1da177e4 LT |
485 | |
486 | /* 1 Operand, 0 external_result, 0 internal_result */ | |
487 | ||
4be44fcd | 488 | status = acpi_ds_exec_end_control_op(walk_state, op); |
1da177e4 LT |
489 | |
490 | /* Make sure to properly pop the result stack */ | |
491 | ||
4be44fcd LB |
492 | if (ACPI_SUCCESS(status)) { |
493 | status = acpi_ds_result_stack_pop(walk_state); | |
494 | } else if (status == AE_CTRL_PENDING) { | |
495 | status = acpi_ds_result_stack_pop(walk_state); | |
496 | if (ACPI_SUCCESS(status)) { | |
1da177e4 LT |
497 | status = AE_CTRL_PENDING; |
498 | } | |
499 | } | |
500 | break; | |
501 | ||
1da177e4 LT |
502 | case AML_TYPE_METHOD_CALL: |
503 | ||
504 | /* | |
505 | * If the method is referenced from within a package | |
506 | * declaration, it is not a invocation of the method, just | |
507 | * a reference to it. | |
508 | */ | |
509 | if ((op->asl.parent) && | |
4be44fcd LB |
510 | ((op->asl.parent->asl.aml_opcode == AML_PACKAGE_OP) |
511 | || (op->asl.parent->asl.aml_opcode == | |
512 | AML_VAR_PACKAGE_OP))) { | |
513 | ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH, | |
514 | "Method Reference in a Package, Op=%p\n", | |
515 | op)); | |
967440e3 | 516 | |
4be44fcd LB |
517 | op->common.node = |
518 | (struct acpi_namespace_node *)op->asl.value. | |
519 | arg->asl.node->object; | |
520 | acpi_ut_add_reference(op->asl.value.arg->asl. | |
521 | node->object); | |
522 | return_ACPI_STATUS(AE_OK); | |
1da177e4 LT |
523 | } |
524 | ||
4be44fcd LB |
525 | ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH, |
526 | "Method invocation, Op=%p\n", op)); | |
1da177e4 LT |
527 | |
528 | /* | |
529 | * (AML_METHODCALL) Op->Asl.Value.Arg->Asl.Node contains | |
530 | * the method Node pointer | |
531 | */ | |
532 | /* next_op points to the op that holds the method name */ | |
533 | ||
534 | next_op = first_arg; | |
535 | ||
536 | /* next_op points to first argument op */ | |
537 | ||
538 | next_op = next_op->common.next; | |
539 | ||
540 | /* | |
541 | * Get the method's arguments and put them on the operand stack | |
542 | */ | |
4be44fcd LB |
543 | status = acpi_ds_create_operands(walk_state, next_op); |
544 | if (ACPI_FAILURE(status)) { | |
1da177e4 LT |
545 | break; |
546 | } | |
547 | ||
548 | /* | |
549 | * Since the operands will be passed to another control method, | |
550 | * we must resolve all local references here (Local variables, | |
551 | * arguments to *this* method, etc.) | |
552 | */ | |
4be44fcd LB |
553 | status = acpi_ds_resolve_operands(walk_state); |
554 | if (ACPI_FAILURE(status)) { | |
52fc0b02 | 555 | |
1da177e4 LT |
556 | /* On error, clear all resolved operands */ |
557 | ||
4be44fcd | 558 | acpi_ds_clear_operands(walk_state); |
1da177e4 LT |
559 | break; |
560 | } | |
561 | ||
562 | /* | |
563 | * Tell the walk loop to preempt this running method and | |
564 | * execute the new method | |
565 | */ | |
566 | status = AE_CTRL_TRANSFER; | |
567 | ||
568 | /* | |
569 | * Return now; we don't want to disturb anything, | |
570 | * especially the operand count! | |
571 | */ | |
4be44fcd | 572 | return_ACPI_STATUS(status); |
1da177e4 LT |
573 | |
574 | case AML_TYPE_CREATE_FIELD: | |
575 | ||
4be44fcd | 576 | ACPI_DEBUG_PRINT((ACPI_DB_EXEC, |
b229cf92 | 577 | "Executing CreateField Buffer/Index Op=%p\n", |
4be44fcd | 578 | op)); |
1da177e4 | 579 | |
4be44fcd LB |
580 | status = acpi_ds_load2_end_op(walk_state); |
581 | if (ACPI_FAILURE(status)) { | |
1da177e4 LT |
582 | break; |
583 | } | |
584 | ||
4be44fcd LB |
585 | status = |
586 | acpi_ds_eval_buffer_field_operands(walk_state, op); | |
1da177e4 LT |
587 | break; |
588 | ||
1da177e4 LT |
589 | case AML_TYPE_CREATE_OBJECT: |
590 | ||
4be44fcd | 591 | ACPI_DEBUG_PRINT((ACPI_DB_EXEC, |
b229cf92 | 592 | "Executing CreateObject (Buffer/Package) Op=%p\n", |
4be44fcd | 593 | op)); |
1da177e4 LT |
594 | |
595 | switch (op->common.parent->common.aml_opcode) { | |
596 | case AML_NAME_OP: | |
597 | ||
598 | /* | |
44f6c012 RM |
599 | * Put the Node on the object stack (Contains the ACPI Name |
600 | * of this object) | |
1da177e4 | 601 | */ |
4be44fcd LB |
602 | walk_state->operands[0] = |
603 | (void *)op->common.parent->common.node; | |
1da177e4 LT |
604 | walk_state->num_operands = 1; |
605 | ||
4be44fcd LB |
606 | status = acpi_ds_create_node(walk_state, |
607 | op->common.parent-> | |
608 | common.node, | |
609 | op->common.parent); | |
610 | if (ACPI_FAILURE(status)) { | |
1da177e4 LT |
611 | break; |
612 | } | |
613 | ||
614 | /* Fall through */ | |
615 | /*lint -fallthrough */ | |
616 | ||
617 | case AML_INT_EVAL_SUBTREE_OP: | |
618 | ||
4be44fcd LB |
619 | status = |
620 | acpi_ds_eval_data_object_operands | |
621 | (walk_state, op, | |
622 | acpi_ns_get_attached_object(op->common. | |
623 | parent->common. | |
624 | node)); | |
1da177e4 LT |
625 | break; |
626 | ||
627 | default: | |
628 | ||
4be44fcd LB |
629 | status = |
630 | acpi_ds_eval_data_object_operands | |
631 | (walk_state, op, NULL); | |
1da177e4 LT |
632 | break; |
633 | } | |
634 | ||
44f6c012 | 635 | /* Done with result state (Now that operand stack is built) */ |
1da177e4 | 636 | |
4be44fcd LB |
637 | status = acpi_ds_result_stack_pop(walk_state); |
638 | if (ACPI_FAILURE(status)) { | |
1da177e4 LT |
639 | goto cleanup; |
640 | } | |
641 | ||
642 | /* | |
643 | * If a result object was returned from above, push it on the | |
644 | * current result stack | |
645 | */ | |
44f6c012 | 646 | if (walk_state->result_obj) { |
4be44fcd LB |
647 | status = |
648 | acpi_ds_result_push(walk_state->result_obj, | |
649 | walk_state); | |
1da177e4 LT |
650 | } |
651 | break; | |
652 | ||
1da177e4 LT |
653 | case AML_TYPE_NAMED_FIELD: |
654 | case AML_TYPE_NAMED_COMPLEX: | |
655 | case AML_TYPE_NAMED_SIMPLE: | |
656 | case AML_TYPE_NAMED_NO_OBJ: | |
657 | ||
4be44fcd LB |
658 | status = acpi_ds_load2_end_op(walk_state); |
659 | if (ACPI_FAILURE(status)) { | |
1da177e4 LT |
660 | break; |
661 | } | |
662 | ||
663 | if (op->common.aml_opcode == AML_REGION_OP) { | |
4be44fcd | 664 | ACPI_DEBUG_PRINT((ACPI_DB_EXEC, |
b229cf92 | 665 | "Executing OpRegion Address/Length Op=%p\n", |
4be44fcd LB |
666 | op)); |
667 | ||
668 | status = | |
669 | acpi_ds_eval_region_operands(walk_state, | |
670 | op); | |
671 | if (ACPI_FAILURE(status)) { | |
1da177e4 LT |
672 | break; |
673 | } | |
674 | ||
4be44fcd | 675 | status = acpi_ds_result_stack_pop(walk_state); |
1da177e4 | 676 | } |
1da177e4 LT |
677 | break; |
678 | ||
1da177e4 LT |
679 | case AML_TYPE_UNDEFINED: |
680 | ||
b8e4d893 BM |
681 | ACPI_ERROR((AE_INFO, |
682 | "Undefined opcode type Op=%p", op)); | |
4be44fcd | 683 | return_ACPI_STATUS(AE_NOT_IMPLEMENTED); |
1da177e4 LT |
684 | |
685 | case AML_TYPE_BOGUS: | |
686 | ||
4be44fcd LB |
687 | ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH, |
688 | "Internal opcode=%X type Op=%p\n", | |
689 | walk_state->opcode, op)); | |
1da177e4 LT |
690 | break; |
691 | ||
1da177e4 LT |
692 | default: |
693 | ||
b8e4d893 BM |
694 | ACPI_ERROR((AE_INFO, |
695 | "Unimplemented opcode, class=%X type=%X Opcode=%X Op=%p", | |
696 | op_class, op_type, op->common.aml_opcode, | |
697 | op)); | |
1da177e4 LT |
698 | |
699 | status = AE_NOT_IMPLEMENTED; | |
700 | break; | |
701 | } | |
702 | } | |
703 | ||
704 | /* | |
705 | * ACPI 2.0 support for 64-bit integers: Truncate numeric | |
706 | * result value if we are executing from a 32-bit ACPI table | |
707 | */ | |
4be44fcd | 708 | acpi_ex_truncate_for32bit_table(walk_state->result_obj); |
1da177e4 LT |
709 | |
710 | /* | |
711 | * Check if we just completed the evaluation of a | |
712 | * conditional predicate | |
713 | */ | |
4be44fcd LB |
714 | if ((ACPI_SUCCESS(status)) && |
715 | (walk_state->control_state) && | |
716 | (walk_state->control_state->common.state == | |
717 | ACPI_CONTROL_PREDICATE_EXECUTING) && | |
718 | (walk_state->control_state->control.predicate_op == op)) { | |
719 | status = | |
720 | acpi_ds_get_predicate_value(walk_state, | |
721 | walk_state->result_obj); | |
1da177e4 LT |
722 | walk_state->result_obj = NULL; |
723 | } | |
724 | ||
4be44fcd | 725 | cleanup: |
1da177e4 | 726 | |
1da177e4 | 727 | if (walk_state->result_obj) { |
52fc0b02 | 728 | |
1da177e4 LT |
729 | /* Break to debugger to display result */ |
730 | ||
4be44fcd LB |
731 | ACPI_DEBUGGER_EXEC(acpi_db_display_result_object |
732 | (walk_state->result_obj, walk_state)); | |
1da177e4 LT |
733 | |
734 | /* | |
735 | * Delete the result op if and only if: | |
736 | * Parent will not use the result -- such as any | |
737 | * non-nested type2 op in a method (parent will be method) | |
738 | */ | |
4be44fcd LB |
739 | acpi_ds_delete_result_if_not_used(op, walk_state->result_obj, |
740 | walk_state); | |
1da177e4 | 741 | } |
1da177e4 LT |
742 | #ifdef _UNDER_DEVELOPMENT |
743 | ||
744 | if (walk_state->parser_state.aml == walk_state->parser_state.aml_end) { | |
4be44fcd | 745 | acpi_db_method_end(walk_state); |
1da177e4 LT |
746 | } |
747 | #endif | |
748 | ||
defba1d8 | 749 | /* Invoke exception handler on error */ |
1da177e4 | 750 | |
4be44fcd | 751 | if (ACPI_FAILURE(status)) { |
defba1d8 | 752 | status = acpi_ds_method_error(status, walk_state); |
1da177e4 | 753 | } |
1da177e4 | 754 | |
defba1d8 BM |
755 | /* Always clear the object stack */ |
756 | ||
757 | walk_state->num_operands = 0; | |
4be44fcd | 758 | return_ACPI_STATUS(status); |
1da177e4 | 759 | } |