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1da177e4 LT |
1 | /****************************************************************************** |
2 | * | |
3 | * Module Name: dswexec - Dispatcher method execution callbacks; | |
4 | * dispatch to interpreter. | |
5 | * | |
6 | *****************************************************************************/ | |
7 | ||
8 | /* | |
4a90c7e8 | 9 | * Copyright (C) 2000 - 2006, R. Byron Moore |
1da177e4 LT |
10 | * All rights reserved. |
11 | * | |
12 | * Redistribution and use in source and binary forms, with or without | |
13 | * modification, are permitted provided that the following conditions | |
14 | * are met: | |
15 | * 1. Redistributions of source code must retain the above copyright | |
16 | * notice, this list of conditions, and the following disclaimer, | |
17 | * without modification. | |
18 | * 2. Redistributions in binary form must reproduce at minimum a disclaimer | |
19 | * substantially similar to the "NO WARRANTY" disclaimer below | |
20 | * ("Disclaimer") and any redistribution must be conditioned upon | |
21 | * including a substantially similar Disclaimer requirement for further | |
22 | * binary redistribution. | |
23 | * 3. Neither the names of the above-listed copyright holders nor the names | |
24 | * of any contributors may be used to endorse or promote products derived | |
25 | * from this software without specific prior written permission. | |
26 | * | |
27 | * Alternatively, this software may be distributed under the terms of the | |
28 | * GNU General Public License ("GPL") version 2 as published by the Free | |
29 | * Software Foundation. | |
30 | * | |
31 | * NO WARRANTY | |
32 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS | |
33 | * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT | |
34 | * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR | |
35 | * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT | |
36 | * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL | |
37 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS | |
38 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | |
39 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, | |
40 | * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING | |
41 | * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE | |
42 | * POSSIBILITY OF SUCH DAMAGES. | |
43 | */ | |
44 | ||
1da177e4 LT |
45 | #include <acpi/acpi.h> |
46 | #include <acpi/acparser.h> | |
47 | #include <acpi/amlcode.h> | |
48 | #include <acpi/acdispat.h> | |
49 | #include <acpi/acinterp.h> | |
50 | #include <acpi/acnamesp.h> | |
51 | #include <acpi/acdebug.h> | |
52 | #include <acpi/acdisasm.h> | |
53 | ||
1da177e4 | 54 | #define _COMPONENT ACPI_DISPATCHER |
4be44fcd | 55 | ACPI_MODULE_NAME("dswexec") |
1da177e4 LT |
56 | |
57 | /* | |
58 | * Dispatch table for opcode classes | |
59 | */ | |
4be44fcd LB |
60 | static ACPI_EXECUTE_OP acpi_gbl_op_type_dispatch[] = { |
61 | acpi_ex_opcode_0A_0T_1R, | |
62 | acpi_ex_opcode_1A_0T_0R, | |
63 | acpi_ex_opcode_1A_0T_1R, | |
64 | acpi_ex_opcode_1A_1T_0R, | |
65 | acpi_ex_opcode_1A_1T_1R, | |
66 | acpi_ex_opcode_2A_0T_0R, | |
67 | acpi_ex_opcode_2A_0T_1R, | |
68 | acpi_ex_opcode_2A_1T_1R, | |
69 | acpi_ex_opcode_2A_2T_1R, | |
70 | acpi_ex_opcode_3A_0T_0R, | |
71 | acpi_ex_opcode_3A_1T_1R, | |
72 | acpi_ex_opcode_6A_0T_1R | |
73 | }; | |
44f6c012 | 74 | |
1da177e4 LT |
75 | /***************************************************************************** |
76 | * | |
77 | * FUNCTION: acpi_ds_get_predicate_value | |
78 | * | |
79 | * PARAMETERS: walk_state - Current state of the parse tree walk | |
44f6c012 | 80 | * result_obj - if non-zero, pop result from result stack |
1da177e4 LT |
81 | * |
82 | * RETURN: Status | |
83 | * | |
84 | * DESCRIPTION: Get the result of a predicate evaluation | |
85 | * | |
86 | ****************************************************************************/ | |
87 | ||
88 | acpi_status | |
4be44fcd LB |
89 | acpi_ds_get_predicate_value(struct acpi_walk_state *walk_state, |
90 | union acpi_operand_object *result_obj) | |
91 | { | |
92 | acpi_status status = AE_OK; | |
93 | union acpi_operand_object *obj_desc; | |
94 | union acpi_operand_object *local_obj_desc = NULL; | |
1da177e4 | 95 | |
4be44fcd | 96 | ACPI_FUNCTION_TRACE_PTR("ds_get_predicate_value", walk_state); |
1da177e4 LT |
97 | |
98 | walk_state->control_state->common.state = 0; | |
99 | ||
100 | if (result_obj) { | |
4be44fcd LB |
101 | status = acpi_ds_result_pop(&obj_desc, walk_state); |
102 | if (ACPI_FAILURE(status)) { | |
4a90c7e8 | 103 | ACPI_REPORT_ERROR(("Could not get result from predicate evaluation, %s\n", acpi_format_exception(status))); |
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) { | |
4a90c7e8 BM |
124 | ACPI_REPORT_ERROR(("No predicate obj_desc=%p State=%p\n", |
125 | obj_desc, walk_state)); | |
1da177e4 | 126 | |
4be44fcd | 127 | return_ACPI_STATUS(AE_AML_NO_OPERAND); |
1da177e4 LT |
128 | } |
129 | ||
130 | /* | |
131 | * Result of predicate evaluation must be an Integer | |
132 | * object. Implicitly convert the argument if necessary. | |
133 | */ | |
4be44fcd LB |
134 | status = acpi_ex_convert_to_integer(obj_desc, &local_obj_desc, 16); |
135 | if (ACPI_FAILURE(status)) { | |
1da177e4 LT |
136 | goto cleanup; |
137 | } | |
138 | ||
4be44fcd | 139 | if (ACPI_GET_OBJECT_TYPE(local_obj_desc) != ACPI_TYPE_INTEGER) { |
4a90c7e8 | 140 | ACPI_REPORT_ERROR(("Bad predicate (not an integer) obj_desc=%p State=%p Type=%X\n", obj_desc, walk_state, ACPI_GET_OBJECT_TYPE(obj_desc))); |
1da177e4 LT |
141 | |
142 | status = AE_AML_OPERAND_TYPE; | |
143 | goto cleanup; | |
144 | } | |
145 | ||
146 | /* Truncate the predicate to 32-bits if necessary */ | |
147 | ||
4be44fcd | 148 | acpi_ex_truncate_for32bit_table(local_obj_desc); |
1da177e4 LT |
149 | |
150 | /* | |
151 | * Save the result of the predicate evaluation on | |
152 | * the control stack | |
153 | */ | |
154 | if (local_obj_desc->integer.value) { | |
155 | walk_state->control_state->common.value = TRUE; | |
4be44fcd | 156 | } else { |
1da177e4 LT |
157 | /* |
158 | * Predicate is FALSE, we will just toss the | |
159 | * rest of the package | |
160 | */ | |
161 | walk_state->control_state->common.value = FALSE; | |
162 | status = AE_CTRL_FALSE; | |
163 | } | |
164 | ||
4be44fcd | 165 | cleanup: |
1da177e4 | 166 | |
4be44fcd LB |
167 | ACPI_DEBUG_PRINT((ACPI_DB_EXEC, "Completed a predicate eval=%X Op=%p\n", |
168 | walk_state->control_state->common.value, | |
169 | walk_state->op)); | |
1da177e4 | 170 | |
4be44fcd | 171 | /* Break to debugger to display result */ |
1da177e4 | 172 | |
4be44fcd LB |
173 | ACPI_DEBUGGER_EXEC(acpi_db_display_result_object |
174 | (local_obj_desc, walk_state)); | |
1da177e4 LT |
175 | |
176 | /* | |
177 | * Delete the predicate result object (we know that | |
178 | * we don't need it anymore) | |
179 | */ | |
180 | if (local_obj_desc != obj_desc) { | |
4be44fcd | 181 | acpi_ut_remove_reference(local_obj_desc); |
1da177e4 | 182 | } |
4be44fcd | 183 | acpi_ut_remove_reference(obj_desc); |
1da177e4 LT |
184 | |
185 | walk_state->control_state->common.state = ACPI_CONTROL_NORMAL; | |
4be44fcd | 186 | return_ACPI_STATUS(status); |
1da177e4 LT |
187 | } |
188 | ||
1da177e4 LT |
189 | /***************************************************************************** |
190 | * | |
191 | * FUNCTION: acpi_ds_exec_begin_op | |
192 | * | |
193 | * PARAMETERS: walk_state - Current state of the parse tree walk | |
44f6c012 | 194 | * out_op - Where to return op if a new one is created |
1da177e4 LT |
195 | * |
196 | * RETURN: Status | |
197 | * | |
198 | * DESCRIPTION: Descending callback used during the execution of control | |
199 | * methods. This is where most operators and operands are | |
200 | * dispatched to the interpreter. | |
201 | * | |
202 | ****************************************************************************/ | |
203 | ||
204 | acpi_status | |
4be44fcd LB |
205 | acpi_ds_exec_begin_op(struct acpi_walk_state *walk_state, |
206 | union acpi_parse_object **out_op) | |
1da177e4 | 207 | { |
4be44fcd LB |
208 | union acpi_parse_object *op; |
209 | acpi_status status = AE_OK; | |
210 | u32 opcode_class; | |
1da177e4 | 211 | |
4be44fcd | 212 | ACPI_FUNCTION_TRACE_PTR("ds_exec_begin_op", walk_state); |
1da177e4 LT |
213 | |
214 | op = walk_state->op; | |
215 | if (!op) { | |
4be44fcd LB |
216 | status = acpi_ds_load2_begin_op(walk_state, out_op); |
217 | if (ACPI_FAILURE(status)) { | |
218 | return_ACPI_STATUS(status); | |
1da177e4 LT |
219 | } |
220 | ||
221 | op = *out_op; | |
222 | walk_state->op = op; | |
223 | walk_state->opcode = op->common.aml_opcode; | |
4be44fcd LB |
224 | walk_state->op_info = |
225 | acpi_ps_get_opcode_info(op->common.aml_opcode); | |
226 | ||
227 | if (acpi_ns_opens_scope(walk_state->op_info->object_type)) { | |
228 | ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH, | |
229 | "(%s) Popping scope for Op %p\n", | |
230 | acpi_ut_get_type_name(walk_state-> | |
231 | op_info-> | |
232 | object_type), | |
233 | op)); | |
234 | ||
235 | status = acpi_ds_scope_stack_pop(walk_state); | |
236 | if (ACPI_FAILURE(status)) { | |
237 | return_ACPI_STATUS(status); | |
1da177e4 LT |
238 | } |
239 | } | |
240 | } | |
241 | ||
242 | if (op == walk_state->origin) { | |
243 | if (out_op) { | |
244 | *out_op = op; | |
245 | } | |
246 | ||
4be44fcd | 247 | return_ACPI_STATUS(AE_OK); |
1da177e4 LT |
248 | } |
249 | ||
250 | /* | |
251 | * If the previous opcode was a conditional, this opcode | |
252 | * must be the beginning of the associated predicate. | |
253 | * Save this knowledge in the current scope descriptor | |
254 | */ | |
255 | if ((walk_state->control_state) && | |
4be44fcd LB |
256 | (walk_state->control_state->common.state == |
257 | ACPI_CONTROL_CONDITIONAL_EXECUTING)) { | |
258 | ACPI_DEBUG_PRINT((ACPI_DB_EXEC, | |
259 | "Exec predicate Op=%p State=%p\n", op, | |
260 | walk_state)); | |
1da177e4 | 261 | |
4be44fcd LB |
262 | walk_state->control_state->common.state = |
263 | ACPI_CONTROL_PREDICATE_EXECUTING; | |
1da177e4 LT |
264 | |
265 | /* Save start of predicate */ | |
266 | ||
267 | walk_state->control_state->control.predicate_op = op; | |
268 | } | |
269 | ||
1da177e4 LT |
270 | opcode_class = walk_state->op_info->class; |
271 | ||
272 | /* We want to send namepaths to the load code */ | |
273 | ||
274 | if (op->common.aml_opcode == AML_INT_NAMEPATH_OP) { | |
275 | opcode_class = AML_CLASS_NAMED_OBJECT; | |
276 | } | |
277 | ||
278 | /* | |
279 | * Handle the opcode based upon the opcode type | |
280 | */ | |
281 | switch (opcode_class) { | |
282 | case AML_CLASS_CONTROL: | |
283 | ||
4be44fcd LB |
284 | status = acpi_ds_result_stack_push(walk_state); |
285 | if (ACPI_FAILURE(status)) { | |
286 | return_ACPI_STATUS(status); | |
1da177e4 LT |
287 | } |
288 | ||
4be44fcd | 289 | status = acpi_ds_exec_begin_control_op(walk_state, op); |
1da177e4 LT |
290 | break; |
291 | ||
1da177e4 LT |
292 | case AML_CLASS_NAMED_OBJECT: |
293 | ||
294 | if (walk_state->walk_type == ACPI_WALK_METHOD) { | |
295 | /* | |
44f6c012 RM |
296 | * Found a named object declaration during method execution; |
297 | * we must enter this object into the namespace. The created | |
298 | * object is temporary and will be deleted upon completion of | |
299 | * the execution of this method. | |
1da177e4 | 300 | */ |
4be44fcd | 301 | status = acpi_ds_load2_begin_op(walk_state, NULL); |
1da177e4 LT |
302 | } |
303 | ||
304 | if (op->common.aml_opcode == AML_REGION_OP) { | |
4be44fcd | 305 | status = acpi_ds_result_stack_push(walk_state); |
1da177e4 LT |
306 | } |
307 | break; | |
308 | ||
1da177e4 LT |
309 | case AML_CLASS_EXECUTE: |
310 | case AML_CLASS_CREATE: | |
1da177e4 LT |
311 | /* |
312 | * Most operators with arguments. | |
313 | * Start a new result/operand state | |
314 | */ | |
defba1d8 BM |
315 | if (walk_state->opcode != AML_CREATE_FIELD_OP) { |
316 | status = acpi_ds_result_stack_push(walk_state); | |
317 | } | |
1da177e4 LT |
318 | break; |
319 | ||
1da177e4 LT |
320 | default: |
321 | break; | |
322 | } | |
323 | ||
324 | /* Nothing to do here during method execution */ | |
325 | ||
4be44fcd | 326 | return_ACPI_STATUS(status); |
1da177e4 LT |
327 | } |
328 | ||
1da177e4 LT |
329 | /***************************************************************************** |
330 | * | |
331 | * FUNCTION: acpi_ds_exec_end_op | |
332 | * | |
333 | * PARAMETERS: walk_state - Current state of the parse tree walk | |
1da177e4 LT |
334 | * |
335 | * RETURN: Status | |
336 | * | |
337 | * DESCRIPTION: Ascending callback used during the execution of control | |
338 | * methods. The only thing we really need to do here is to | |
339 | * notice the beginning of IF, ELSE, and WHILE blocks. | |
340 | * | |
341 | ****************************************************************************/ | |
342 | ||
4be44fcd | 343 | acpi_status acpi_ds_exec_end_op(struct acpi_walk_state *walk_state) |
1da177e4 | 344 | { |
4be44fcd LB |
345 | union acpi_parse_object *op; |
346 | acpi_status status = AE_OK; | |
347 | u32 op_type; | |
348 | u32 op_class; | |
349 | union acpi_parse_object *next_op; | |
350 | union acpi_parse_object *first_arg; | |
1da177e4 | 351 | |
4be44fcd | 352 | ACPI_FUNCTION_TRACE_PTR("ds_exec_end_op", walk_state); |
1da177e4 | 353 | |
4be44fcd | 354 | op = walk_state->op; |
1da177e4 LT |
355 | op_type = walk_state->op_info->type; |
356 | op_class = walk_state->op_info->class; | |
357 | ||
358 | if (op_class == AML_CLASS_UNKNOWN) { | |
4a90c7e8 BM |
359 | ACPI_REPORT_ERROR(("Unknown opcode %X\n", |
360 | op->common.aml_opcode)); | |
4be44fcd | 361 | return_ACPI_STATUS(AE_NOT_IMPLEMENTED); |
1da177e4 LT |
362 | } |
363 | ||
364 | first_arg = op->common.value.arg; | |
365 | ||
366 | /* Init the walk state */ | |
367 | ||
368 | walk_state->num_operands = 0; | |
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) { | |
4be44fcd | 383 | case AML_CLASS_ARGUMENT: /* constants, literals, etc. - do nothing */ |
1da177e4 LT |
384 | break; |
385 | ||
4be44fcd | 386 | case AML_CLASS_EXECUTE: /* most operators with arguments */ |
1da177e4 LT |
387 | |
388 | /* Build resolved operand stack */ | |
389 | ||
4be44fcd LB |
390 | status = acpi_ds_create_operands(walk_state, first_arg); |
391 | if (ACPI_FAILURE(status)) { | |
1da177e4 LT |
392 | goto cleanup; |
393 | } | |
394 | ||
395 | /* Done with this result state (Now that operand stack is built) */ | |
396 | ||
4be44fcd LB |
397 | status = acpi_ds_result_stack_pop(walk_state); |
398 | if (ACPI_FAILURE(status)) { | |
1da177e4 LT |
399 | goto cleanup; |
400 | } | |
401 | ||
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)) { | |
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); | |
415 | if (ACPI_SUCCESS(status)) { | |
416 | ACPI_DUMP_OPERANDS(ACPI_WALK_OPERANDS, | |
417 | ACPI_IMODE_EXECUTE, | |
418 | acpi_ps_get_opcode_name | |
419 | (walk_state->opcode), | |
420 | walk_state->num_operands, | |
421 | "after ex_resolve_operands"); | |
1da177e4 LT |
422 | } |
423 | } | |
424 | ||
4be44fcd | 425 | if (ACPI_SUCCESS(status)) { |
1da177e4 LT |
426 | /* |
427 | * Dispatch the request to the appropriate interpreter handler | |
428 | * routine. There is one routine per opcode "type" based upon the | |
429 | * number of opcode arguments and return type. | |
430 | */ | |
4be44fcd LB |
431 | status = |
432 | acpi_gbl_op_type_dispatch[op_type] (walk_state); | |
433 | } else { | |
1da177e4 LT |
434 | /* |
435 | * Treat constructs of the form "Store(local_x,local_x)" as noops when the | |
436 | * Local is uninitialized. | |
437 | */ | |
4be44fcd LB |
438 | if ((status == AE_AML_UNINITIALIZED_LOCAL) && |
439 | (walk_state->opcode == AML_STORE_OP) && | |
440 | (walk_state->operands[0]->common.type == | |
441 | ACPI_TYPE_LOCAL_REFERENCE) | |
442 | && (walk_state->operands[1]->common.type == | |
443 | ACPI_TYPE_LOCAL_REFERENCE) | |
444 | && (walk_state->operands[0]->reference.opcode == | |
445 | walk_state->operands[1]->reference.opcode) | |
446 | && (walk_state->operands[0]->reference.offset == | |
447 | walk_state->operands[1]->reference.offset)) { | |
1da177e4 | 448 | status = AE_OK; |
4be44fcd | 449 | } else { |
4a90c7e8 | 450 | ACPI_REPORT_ERROR(("[%s]: Could not resolve operands, %s\n", acpi_ps_get_opcode_name(walk_state->opcode), acpi_format_exception(status))); |
1da177e4 LT |
451 | } |
452 | } | |
453 | ||
454 | /* Always delete the argument objects and clear the operand stack */ | |
455 | ||
4be44fcd | 456 | acpi_ds_clear_operands(walk_state); |
1da177e4 LT |
457 | |
458 | /* | |
459 | * If a result object was returned from above, push it on the | |
460 | * current result stack | |
461 | */ | |
4be44fcd LB |
462 | if (ACPI_SUCCESS(status) && walk_state->result_obj) { |
463 | status = | |
464 | acpi_ds_result_push(walk_state->result_obj, | |
465 | walk_state); | |
1da177e4 LT |
466 | } |
467 | ||
468 | break; | |
469 | ||
1da177e4 LT |
470 | default: |
471 | ||
472 | switch (op_type) { | |
4be44fcd | 473 | case AML_TYPE_CONTROL: /* Type 1 opcode, IF/ELSE/WHILE/NOOP */ |
1da177e4 LT |
474 | |
475 | /* 1 Operand, 0 external_result, 0 internal_result */ | |
476 | ||
4be44fcd | 477 | status = acpi_ds_exec_end_control_op(walk_state, op); |
1da177e4 LT |
478 | |
479 | /* Make sure to properly pop the result stack */ | |
480 | ||
4be44fcd LB |
481 | if (ACPI_SUCCESS(status)) { |
482 | status = acpi_ds_result_stack_pop(walk_state); | |
483 | } else if (status == AE_CTRL_PENDING) { | |
484 | status = acpi_ds_result_stack_pop(walk_state); | |
485 | if (ACPI_SUCCESS(status)) { | |
1da177e4 LT |
486 | status = AE_CTRL_PENDING; |
487 | } | |
488 | } | |
489 | break; | |
490 | ||
1da177e4 LT |
491 | case AML_TYPE_METHOD_CALL: |
492 | ||
493 | /* | |
494 | * If the method is referenced from within a package | |
495 | * declaration, it is not a invocation of the method, just | |
496 | * a reference to it. | |
497 | */ | |
498 | if ((op->asl.parent) && | |
4be44fcd LB |
499 | ((op->asl.parent->asl.aml_opcode == AML_PACKAGE_OP) |
500 | || (op->asl.parent->asl.aml_opcode == | |
501 | AML_VAR_PACKAGE_OP))) { | |
502 | ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH, | |
503 | "Method Reference in a Package, Op=%p\n", | |
504 | op)); | |
505 | op->common.node = | |
506 | (struct acpi_namespace_node *)op->asl.value. | |
507 | arg->asl.node->object; | |
508 | acpi_ut_add_reference(op->asl.value.arg->asl. | |
509 | node->object); | |
510 | return_ACPI_STATUS(AE_OK); | |
1da177e4 LT |
511 | } |
512 | ||
4be44fcd LB |
513 | ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH, |
514 | "Method invocation, Op=%p\n", op)); | |
1da177e4 LT |
515 | |
516 | /* | |
517 | * (AML_METHODCALL) Op->Asl.Value.Arg->Asl.Node contains | |
518 | * the method Node pointer | |
519 | */ | |
520 | /* next_op points to the op that holds the method name */ | |
521 | ||
522 | next_op = first_arg; | |
523 | ||
524 | /* next_op points to first argument op */ | |
525 | ||
526 | next_op = next_op->common.next; | |
527 | ||
528 | /* | |
529 | * Get the method's arguments and put them on the operand stack | |
530 | */ | |
4be44fcd LB |
531 | status = acpi_ds_create_operands(walk_state, next_op); |
532 | if (ACPI_FAILURE(status)) { | |
1da177e4 LT |
533 | break; |
534 | } | |
535 | ||
536 | /* | |
537 | * Since the operands will be passed to another control method, | |
538 | * we must resolve all local references here (Local variables, | |
539 | * arguments to *this* method, etc.) | |
540 | */ | |
4be44fcd LB |
541 | status = acpi_ds_resolve_operands(walk_state); |
542 | if (ACPI_FAILURE(status)) { | |
1da177e4 LT |
543 | /* On error, clear all resolved operands */ |
544 | ||
4be44fcd | 545 | acpi_ds_clear_operands(walk_state); |
1da177e4 LT |
546 | break; |
547 | } | |
548 | ||
549 | /* | |
550 | * Tell the walk loop to preempt this running method and | |
551 | * execute the new method | |
552 | */ | |
553 | status = AE_CTRL_TRANSFER; | |
554 | ||
555 | /* | |
556 | * Return now; we don't want to disturb anything, | |
557 | * especially the operand count! | |
558 | */ | |
4be44fcd | 559 | return_ACPI_STATUS(status); |
1da177e4 LT |
560 | |
561 | case AML_TYPE_CREATE_FIELD: | |
562 | ||
4be44fcd LB |
563 | ACPI_DEBUG_PRINT((ACPI_DB_EXEC, |
564 | "Executing create_field Buffer/Index Op=%p\n", | |
565 | op)); | |
1da177e4 | 566 | |
4be44fcd LB |
567 | status = acpi_ds_load2_end_op(walk_state); |
568 | if (ACPI_FAILURE(status)) { | |
1da177e4 LT |
569 | break; |
570 | } | |
571 | ||
4be44fcd LB |
572 | status = |
573 | acpi_ds_eval_buffer_field_operands(walk_state, op); | |
1da177e4 LT |
574 | break; |
575 | ||
1da177e4 LT |
576 | case AML_TYPE_CREATE_OBJECT: |
577 | ||
4be44fcd LB |
578 | ACPI_DEBUG_PRINT((ACPI_DB_EXEC, |
579 | "Executing create_object (Buffer/Package) Op=%p\n", | |
580 | op)); | |
1da177e4 LT |
581 | |
582 | switch (op->common.parent->common.aml_opcode) { | |
583 | case AML_NAME_OP: | |
584 | ||
585 | /* | |
44f6c012 RM |
586 | * Put the Node on the object stack (Contains the ACPI Name |
587 | * of this object) | |
1da177e4 | 588 | */ |
4be44fcd LB |
589 | walk_state->operands[0] = |
590 | (void *)op->common.parent->common.node; | |
1da177e4 LT |
591 | walk_state->num_operands = 1; |
592 | ||
4be44fcd LB |
593 | status = acpi_ds_create_node(walk_state, |
594 | op->common.parent-> | |
595 | common.node, | |
596 | op->common.parent); | |
597 | if (ACPI_FAILURE(status)) { | |
1da177e4 LT |
598 | break; |
599 | } | |
600 | ||
601 | /* Fall through */ | |
602 | /*lint -fallthrough */ | |
603 | ||
604 | case AML_INT_EVAL_SUBTREE_OP: | |
605 | ||
4be44fcd LB |
606 | status = |
607 | acpi_ds_eval_data_object_operands | |
608 | (walk_state, op, | |
609 | acpi_ns_get_attached_object(op->common. | |
610 | parent->common. | |
611 | node)); | |
1da177e4 LT |
612 | break; |
613 | ||
614 | default: | |
615 | ||
4be44fcd LB |
616 | status = |
617 | acpi_ds_eval_data_object_operands | |
618 | (walk_state, op, NULL); | |
1da177e4 LT |
619 | break; |
620 | } | |
621 | ||
44f6c012 | 622 | /* Done with result state (Now that operand stack is built) */ |
1da177e4 | 623 | |
4be44fcd LB |
624 | status = acpi_ds_result_stack_pop(walk_state); |
625 | if (ACPI_FAILURE(status)) { | |
1da177e4 LT |
626 | goto cleanup; |
627 | } | |
628 | ||
629 | /* | |
630 | * If a result object was returned from above, push it on the | |
631 | * current result stack | |
632 | */ | |
44f6c012 | 633 | if (walk_state->result_obj) { |
4be44fcd LB |
634 | status = |
635 | acpi_ds_result_push(walk_state->result_obj, | |
636 | walk_state); | |
1da177e4 LT |
637 | } |
638 | break; | |
639 | ||
1da177e4 LT |
640 | case AML_TYPE_NAMED_FIELD: |
641 | case AML_TYPE_NAMED_COMPLEX: | |
642 | case AML_TYPE_NAMED_SIMPLE: | |
643 | case AML_TYPE_NAMED_NO_OBJ: | |
644 | ||
4be44fcd LB |
645 | status = acpi_ds_load2_end_op(walk_state); |
646 | if (ACPI_FAILURE(status)) { | |
1da177e4 LT |
647 | break; |
648 | } | |
649 | ||
650 | if (op->common.aml_opcode == AML_REGION_OP) { | |
4be44fcd LB |
651 | ACPI_DEBUG_PRINT((ACPI_DB_EXEC, |
652 | "Executing op_region Address/Length Op=%p\n", | |
653 | op)); | |
654 | ||
655 | status = | |
656 | acpi_ds_eval_region_operands(walk_state, | |
657 | op); | |
658 | if (ACPI_FAILURE(status)) { | |
1da177e4 LT |
659 | break; |
660 | } | |
661 | ||
4be44fcd | 662 | status = acpi_ds_result_stack_pop(walk_state); |
1da177e4 LT |
663 | } |
664 | ||
665 | break; | |
666 | ||
1da177e4 LT |
667 | case AML_TYPE_UNDEFINED: |
668 | ||
4a90c7e8 BM |
669 | ACPI_REPORT_ERROR(("Undefined opcode type Op=%p\n", |
670 | op)); | |
4be44fcd | 671 | return_ACPI_STATUS(AE_NOT_IMPLEMENTED); |
1da177e4 LT |
672 | |
673 | case AML_TYPE_BOGUS: | |
674 | ||
4be44fcd LB |
675 | ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH, |
676 | "Internal opcode=%X type Op=%p\n", | |
677 | walk_state->opcode, op)); | |
1da177e4 LT |
678 | break; |
679 | ||
1da177e4 LT |
680 | default: |
681 | ||
4a90c7e8 | 682 | ACPI_REPORT_ERROR(("Unimplemented opcode, class=%X type=%X Opcode=%X Op=%p\n", op_class, op_type, op->common.aml_opcode, op)); |
1da177e4 LT |
683 | |
684 | status = AE_NOT_IMPLEMENTED; | |
685 | break; | |
686 | } | |
687 | } | |
688 | ||
689 | /* | |
690 | * ACPI 2.0 support for 64-bit integers: Truncate numeric | |
691 | * result value if we are executing from a 32-bit ACPI table | |
692 | */ | |
4be44fcd | 693 | acpi_ex_truncate_for32bit_table(walk_state->result_obj); |
1da177e4 LT |
694 | |
695 | /* | |
696 | * Check if we just completed the evaluation of a | |
697 | * conditional predicate | |
698 | */ | |
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 LT |
713 | if (walk_state->result_obj) { |
714 | /* Break to debugger to display result */ | |
715 | ||
4be44fcd LB |
716 | ACPI_DEBUGGER_EXEC(acpi_db_display_result_object |
717 | (walk_state->result_obj, walk_state)); | |
1da177e4 LT |
718 | |
719 | /* | |
720 | * Delete the result op if and only if: | |
721 | * Parent will not use the result -- such as any | |
722 | * non-nested type2 op in a method (parent will be method) | |
723 | */ | |
4be44fcd LB |
724 | acpi_ds_delete_result_if_not_used(op, walk_state->result_obj, |
725 | walk_state); | |
1da177e4 | 726 | } |
1da177e4 LT |
727 | #ifdef _UNDER_DEVELOPMENT |
728 | ||
729 | if (walk_state->parser_state.aml == walk_state->parser_state.aml_end) { | |
4be44fcd | 730 | acpi_db_method_end(walk_state); |
1da177e4 LT |
731 | } |
732 | #endif | |
733 | ||
defba1d8 | 734 | /* Invoke exception handler on error */ |
1da177e4 | 735 | |
4be44fcd | 736 | if (ACPI_FAILURE(status)) { |
defba1d8 | 737 | status = acpi_ds_method_error(status, walk_state); |
1da177e4 | 738 | } |
1da177e4 | 739 | |
defba1d8 BM |
740 | /* Always clear the object stack */ |
741 | ||
742 | walk_state->num_operands = 0; | |
4be44fcd | 743 | return_ACPI_STATUS(status); |
1da177e4 | 744 | } |