1 /******************************************************************************
2 *
3 * Module Name: dswexec - Dispatcher method execution callbacks;
4 * dispatch to interpreter.
5 *
6 *****************************************************************************/
7
8 /*
9 * Copyright (C) 2000 - 2014, Intel Corp.
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
45 #include "acpi.h"
46 #include "accommon.h"
47 #include "acparser.h"
48 #include "amlcode.h"
49 #include "acdispat.h"
50 #include "acinterp.h"
51 #include "acnamesp.h"
52 #include "acdebug.h"
53
54
55 #define _COMPONENT ACPI_DISPATCHER
56 ACPI_MODULE_NAME ("dswexec")
57
58 /*
59 * Dispatch table for opcode classes
60 */
61 static ACPI_EXECUTE_OP AcpiGbl_OpTypeDispatch [] =
62 {
63 AcpiExOpcode_0A_0T_1R,
64 AcpiExOpcode_1A_0T_0R,
65 AcpiExOpcode_1A_0T_1R,
66 AcpiExOpcode_1A_1T_0R,
67 AcpiExOpcode_1A_1T_1R,
68 AcpiExOpcode_2A_0T_0R,
69 AcpiExOpcode_2A_0T_1R,
70 AcpiExOpcode_2A_1T_1R,
71 AcpiExOpcode_2A_2T_1R,
72 AcpiExOpcode_3A_0T_0R,
73 AcpiExOpcode_3A_1T_1R,
74 AcpiExOpcode_6A_0T_1R
75 };
76
77
78 /*****************************************************************************
79 *
80 * FUNCTION: AcpiDsGetPredicateValue
81 *
82 * PARAMETERS: WalkState - Current state of the parse tree walk
83 * ResultObj - if non-zero, pop result from result stack
84 *
85 * RETURN: Status
86 *
87 * DESCRIPTION: Get the result of a predicate evaluation
88 *
89 ****************************************************************************/
90
91 ACPI_STATUS
AcpiDsGetPredicateValue(ACPI_WALK_STATE * WalkState,ACPI_OPERAND_OBJECT * ResultObj)92 AcpiDsGetPredicateValue (
93 ACPI_WALK_STATE *WalkState,
94 ACPI_OPERAND_OBJECT *ResultObj)
95 {
96 ACPI_STATUS Status = AE_OK;
97 ACPI_OPERAND_OBJECT *ObjDesc;
98 ACPI_OPERAND_OBJECT *LocalObjDesc = NULL;
99
100
101 ACPI_FUNCTION_TRACE_PTR (DsGetPredicateValue, WalkState);
102
103
104 WalkState->ControlState->Common.State = 0;
105
106 if (ResultObj)
107 {
108 Status = AcpiDsResultPop (&ObjDesc, WalkState);
109 if (ACPI_FAILURE (Status))
110 {
111 ACPI_EXCEPTION ((AE_INFO, Status,
112 "Could not get result from predicate evaluation"));
113
114 return_ACPI_STATUS (Status);
115 }
116 }
117 else
118 {
119 Status = AcpiDsCreateOperand (WalkState, WalkState->Op, 0);
120 if (ACPI_FAILURE (Status))
121 {
122 return_ACPI_STATUS (Status);
123 }
124
125 Status = AcpiExResolveToValue (&WalkState->Operands [0], WalkState);
126 if (ACPI_FAILURE (Status))
127 {
128 return_ACPI_STATUS (Status);
129 }
130
131 ObjDesc = WalkState->Operands [0];
132 }
133
134 if (!ObjDesc)
135 {
136 ACPI_ERROR ((AE_INFO,
137 "No predicate ObjDesc=%p State=%p",
138 ObjDesc, WalkState));
139
140 return_ACPI_STATUS (AE_AML_NO_OPERAND);
141 }
142
143 /*
144 * Result of predicate evaluation must be an Integer
145 * object. Implicitly convert the argument if necessary.
146 */
147 Status = AcpiExConvertToInteger (ObjDesc, &LocalObjDesc, 16);
148 if (ACPI_FAILURE (Status))
149 {
150 goto Cleanup;
151 }
152
153 if (LocalObjDesc->Common.Type != ACPI_TYPE_INTEGER)
154 {
155 ACPI_ERROR ((AE_INFO,
156 "Bad predicate (not an integer) ObjDesc=%p State=%p Type=0x%X",
157 ObjDesc, WalkState, ObjDesc->Common.Type));
158
159 Status = AE_AML_OPERAND_TYPE;
160 goto Cleanup;
161 }
162
163 /* Truncate the predicate to 32-bits if necessary */
164
165 (void) AcpiExTruncateFor32bitTable (LocalObjDesc);
166
167 /*
168 * Save the result of the predicate evaluation on
169 * the control stack
170 */
171 if (LocalObjDesc->Integer.Value)
172 {
173 WalkState->ControlState->Common.Value = TRUE;
174 }
175 else
176 {
177 /*
178 * Predicate is FALSE, we will just toss the
179 * rest of the package
180 */
181 WalkState->ControlState->Common.Value = FALSE;
182 Status = AE_CTRL_FALSE;
183 }
184
185 /* Predicate can be used for an implicit return value */
186
187 (void) AcpiDsDoImplicitReturn (LocalObjDesc, WalkState, TRUE);
188
189
190 Cleanup:
191
192 ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "Completed a predicate eval=%X Op=%p\n",
193 WalkState->ControlState->Common.Value, WalkState->Op));
194
195 /* Break to debugger to display result */
196
197 ACPI_DEBUGGER_EXEC (AcpiDbDisplayResultObject (LocalObjDesc, WalkState));
198
199 /*
200 * Delete the predicate result object (we know that
201 * we don't need it anymore)
202 */
203 if (LocalObjDesc != ObjDesc)
204 {
205 AcpiUtRemoveReference (LocalObjDesc);
206 }
207 AcpiUtRemoveReference (ObjDesc);
208
209 WalkState->ControlState->Common.State = ACPI_CONTROL_NORMAL;
210 return_ACPI_STATUS (Status);
211 }
212
213
214 /*****************************************************************************
215 *
216 * FUNCTION: AcpiDsExecBeginOp
217 *
218 * PARAMETERS: WalkState - Current state of the parse tree walk
219 * OutOp - Where to return op if a new one is created
220 *
221 * RETURN: Status
222 *
223 * DESCRIPTION: Descending callback used during the execution of control
224 * methods. This is where most operators and operands are
225 * dispatched to the interpreter.
226 *
227 ****************************************************************************/
228
229 ACPI_STATUS
AcpiDsExecBeginOp(ACPI_WALK_STATE * WalkState,ACPI_PARSE_OBJECT ** OutOp)230 AcpiDsExecBeginOp (
231 ACPI_WALK_STATE *WalkState,
232 ACPI_PARSE_OBJECT **OutOp)
233 {
234 ACPI_PARSE_OBJECT *Op;
235 ACPI_STATUS Status = AE_OK;
236 UINT32 OpcodeClass;
237
238
239 ACPI_FUNCTION_TRACE_PTR (DsExecBeginOp, WalkState);
240
241
242 Op = WalkState->Op;
243 if (!Op)
244 {
245 Status = AcpiDsLoad2BeginOp (WalkState, OutOp);
246 if (ACPI_FAILURE (Status))
247 {
248 goto ErrorExit;
249 }
250
251 Op = *OutOp;
252 WalkState->Op = Op;
253 WalkState->Opcode = Op->Common.AmlOpcode;
254 WalkState->OpInfo = AcpiPsGetOpcodeInfo (Op->Common.AmlOpcode);
255
256 if (AcpiNsOpensScope (WalkState->OpInfo->ObjectType))
257 {
258 ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH,
259 "(%s) Popping scope for Op %p\n",
260 AcpiUtGetTypeName (WalkState->OpInfo->ObjectType), Op));
261
262 Status = AcpiDsScopeStackPop (WalkState);
263 if (ACPI_FAILURE (Status))
264 {
265 goto ErrorExit;
266 }
267 }
268 }
269
270 if (Op == WalkState->Origin)
271 {
272 if (OutOp)
273 {
274 *OutOp = Op;
275 }
276
277 return_ACPI_STATUS (AE_OK);
278 }
279
280 /*
281 * If the previous opcode was a conditional, this opcode
282 * must be the beginning of the associated predicate.
283 * Save this knowledge in the current scope descriptor
284 */
285 if ((WalkState->ControlState) &&
286 (WalkState->ControlState->Common.State ==
287 ACPI_CONTROL_CONDITIONAL_EXECUTING))
288 {
289 ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "Exec predicate Op=%p State=%p\n",
290 Op, WalkState));
291
292 WalkState->ControlState->Common.State = ACPI_CONTROL_PREDICATE_EXECUTING;
293
294 /* Save start of predicate */
295
296 WalkState->ControlState->Control.PredicateOp = Op;
297 }
298
299
300 OpcodeClass = WalkState->OpInfo->Class;
301
302 /* We want to send namepaths to the load code */
303
304 if (Op->Common.AmlOpcode == AML_INT_NAMEPATH_OP)
305 {
306 OpcodeClass = AML_CLASS_NAMED_OBJECT;
307 }
308
309 /*
310 * Handle the opcode based upon the opcode type
311 */
312 switch (OpcodeClass)
313 {
314 case AML_CLASS_CONTROL:
315
316 Status = AcpiDsExecBeginControlOp (WalkState, Op);
317 break;
318
319 case AML_CLASS_NAMED_OBJECT:
320
321 if (WalkState->WalkType & ACPI_WALK_METHOD)
322 {
323 /*
324 * Found a named object declaration during method execution;
325 * we must enter this object into the namespace. The created
326 * object is temporary and will be deleted upon completion of
327 * the execution of this method.
328 *
329 * Note 10/2010: Except for the Scope() op. This opcode does
330 * not actually create a new object, it refers to an existing
331 * object. However, for Scope(), we want to indeed open a
332 * new scope.
333 */
334 if (Op->Common.AmlOpcode != AML_SCOPE_OP)
335 {
336 Status = AcpiDsLoad2BeginOp (WalkState, NULL);
337 }
338 else
339 {
340 Status = AcpiDsScopeStackPush (Op->Named.Node,
341 Op->Named.Node->Type, WalkState);
342 if (ACPI_FAILURE (Status))
343 {
344 return_ACPI_STATUS (Status);
345 }
346 }
347 }
348 break;
349
350 case AML_CLASS_EXECUTE:
351 case AML_CLASS_CREATE:
352
353 break;
354
355 default:
356
357 break;
358 }
359
360 /* Nothing to do here during method execution */
361
362 return_ACPI_STATUS (Status);
363
364
365 ErrorExit:
366 Status = AcpiDsMethodError (Status, WalkState);
367 return_ACPI_STATUS (Status);
368 }
369
370
371 /*****************************************************************************
372 *
373 * FUNCTION: AcpiDsExecEndOp
374 *
375 * PARAMETERS: WalkState - Current state of the parse tree walk
376 *
377 * RETURN: Status
378 *
379 * DESCRIPTION: Ascending callback used during the execution of control
380 * methods. The only thing we really need to do here is to
381 * notice the beginning of IF, ELSE, and WHILE blocks.
382 *
383 ****************************************************************************/
384
385 ACPI_STATUS
AcpiDsExecEndOp(ACPI_WALK_STATE * WalkState)386 AcpiDsExecEndOp (
387 ACPI_WALK_STATE *WalkState)
388 {
389 ACPI_PARSE_OBJECT *Op;
390 ACPI_STATUS Status = AE_OK;
391 UINT32 OpType;
392 UINT32 OpClass;
393 ACPI_PARSE_OBJECT *NextOp;
394 ACPI_PARSE_OBJECT *FirstArg;
395
396
397 ACPI_FUNCTION_TRACE_PTR (DsExecEndOp, WalkState);
398
399
400 Op = WalkState->Op;
401 OpType = WalkState->OpInfo->Type;
402 OpClass = WalkState->OpInfo->Class;
403
404 if (OpClass == AML_CLASS_UNKNOWN)
405 {
406 ACPI_ERROR ((AE_INFO, "Unknown opcode 0x%X", Op->Common.AmlOpcode));
407 return_ACPI_STATUS (AE_NOT_IMPLEMENTED);
408 }
409
410 FirstArg = Op->Common.Value.Arg;
411
412 /* Init the walk state */
413
414 WalkState->NumOperands = 0;
415 WalkState->OperandIndex = 0;
416 WalkState->ReturnDesc = NULL;
417 WalkState->ResultObj = NULL;
418
419 /* Call debugger for single step support (DEBUG build only) */
420
421 ACPI_DEBUGGER_EXEC (Status = AcpiDbSingleStep (WalkState, Op, OpClass));
422 ACPI_DEBUGGER_EXEC (if (ACPI_FAILURE (Status)) {return_ACPI_STATUS (Status);});
423
424 /* Decode the Opcode Class */
425
426 switch (OpClass)
427 {
428 case AML_CLASS_ARGUMENT: /* Constants, literals, etc. */
429
430 if (WalkState->Opcode == AML_INT_NAMEPATH_OP)
431 {
432 Status = AcpiDsEvaluateNamePath (WalkState);
433 if (ACPI_FAILURE (Status))
434 {
435 goto Cleanup;
436 }
437 }
438 break;
439
440 case AML_CLASS_EXECUTE: /* Most operators with arguments */
441
442 /* Build resolved operand stack */
443
444 Status = AcpiDsCreateOperands (WalkState, FirstArg);
445 if (ACPI_FAILURE (Status))
446 {
447 goto Cleanup;
448 }
449
450 /*
451 * All opcodes require operand resolution, with the only exceptions
452 * being the ObjectType and SizeOf operators.
453 */
454 if (!(WalkState->OpInfo->Flags & AML_NO_OPERAND_RESOLVE))
455 {
456 /* Resolve all operands */
457
458 Status = AcpiExResolveOperands (WalkState->Opcode,
459 &(WalkState->Operands [WalkState->NumOperands -1]),
460 WalkState);
461 }
462
463 if (ACPI_SUCCESS (Status))
464 {
465 /*
466 * Dispatch the request to the appropriate interpreter handler
467 * routine. There is one routine per opcode "type" based upon the
468 * number of opcode arguments and return type.
469 */
470 Status = AcpiGbl_OpTypeDispatch[OpType] (WalkState);
471 }
472 else
473 {
474 /*
475 * Treat constructs of the form "Store(LocalX,LocalX)" as noops when the
476 * Local is uninitialized.
477 */
478 if ((Status == AE_AML_UNINITIALIZED_LOCAL) &&
479 (WalkState->Opcode == AML_STORE_OP) &&
480 (WalkState->Operands[0]->Common.Type == ACPI_TYPE_LOCAL_REFERENCE) &&
481 (WalkState->Operands[1]->Common.Type == ACPI_TYPE_LOCAL_REFERENCE) &&
482 (WalkState->Operands[0]->Reference.Class ==
483 WalkState->Operands[1]->Reference.Class) &&
484 (WalkState->Operands[0]->Reference.Value ==
485 WalkState->Operands[1]->Reference.Value))
486 {
487 Status = AE_OK;
488 }
489 else
490 {
491 ACPI_EXCEPTION ((AE_INFO, Status,
492 "While resolving operands for [%s]",
493 AcpiPsGetOpcodeName (WalkState->Opcode)));
494 }
495 }
496
497 /* Always delete the argument objects and clear the operand stack */
498
499 AcpiDsClearOperands (WalkState);
500
501 /*
502 * If a result object was returned from above, push it on the
503 * current result stack
504 */
505 if (ACPI_SUCCESS (Status) &&
506 WalkState->ResultObj)
507 {
508 Status = AcpiDsResultPush (WalkState->ResultObj, WalkState);
509 }
510 break;
511
512 default:
513
514 switch (OpType)
515 {
516 case AML_TYPE_CONTROL: /* Type 1 opcode, IF/ELSE/WHILE/NOOP */
517
518 /* 1 Operand, 0 ExternalResult, 0 InternalResult */
519
520 Status = AcpiDsExecEndControlOp (WalkState, Op);
521
522 break;
523
524 case AML_TYPE_METHOD_CALL:
525 /*
526 * If the method is referenced from within a package
527 * declaration, it is not a invocation of the method, just
528 * a reference to it.
529 */
530 if ((Op->Asl.Parent) &&
531 ((Op->Asl.Parent->Asl.AmlOpcode == AML_PACKAGE_OP) ||
532 (Op->Asl.Parent->Asl.AmlOpcode == AML_VAR_PACKAGE_OP)))
533 {
534 ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH,
535 "Method Reference in a Package, Op=%p\n", Op));
536
537 Op->Common.Node = (ACPI_NAMESPACE_NODE *) Op->Asl.Value.Arg->Asl.Node;
538 AcpiUtAddReference (Op->Asl.Value.Arg->Asl.Node->Object);
539 return_ACPI_STATUS (AE_OK);
540 }
541
542 ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH,
543 "Method invocation, Op=%p\n", Op));
544
545 /*
546 * (AML_METHODCALL) Op->Asl.Value.Arg->Asl.Node contains
547 * the method Node pointer
548 */
549 /* NextOp points to the op that holds the method name */
550
551 NextOp = FirstArg;
552
553 /* NextOp points to first argument op */
554
555 NextOp = NextOp->Common.Next;
556
557 /*
558 * Get the method's arguments and put them on the operand stack
559 */
560 Status = AcpiDsCreateOperands (WalkState, NextOp);
561 if (ACPI_FAILURE (Status))
562 {
563 break;
564 }
565
566 /*
567 * Since the operands will be passed to another control method,
568 * we must resolve all local references here (Local variables,
569 * arguments to *this* method, etc.)
570 */
571 Status = AcpiDsResolveOperands (WalkState);
572 if (ACPI_FAILURE (Status))
573 {
574 /* On error, clear all resolved operands */
575
576 AcpiDsClearOperands (WalkState);
577 break;
578 }
579
580 /*
581 * Tell the walk loop to preempt this running method and
582 * execute the new method
583 */
584 Status = AE_CTRL_TRANSFER;
585
586 /*
587 * Return now; we don't want to disturb anything,
588 * especially the operand count!
589 */
590 return_ACPI_STATUS (Status);
591
592 case AML_TYPE_CREATE_FIELD:
593
594 ACPI_DEBUG_PRINT ((ACPI_DB_EXEC,
595 "Executing CreateField Buffer/Index Op=%p\n", Op));
596
597 Status = AcpiDsLoad2EndOp (WalkState);
598 if (ACPI_FAILURE (Status))
599 {
600 break;
601 }
602
603 Status = AcpiDsEvalBufferFieldOperands (WalkState, Op);
604 break;
605
606
607 case AML_TYPE_CREATE_OBJECT:
608
609 ACPI_DEBUG_PRINT ((ACPI_DB_EXEC,
610 "Executing CreateObject (Buffer/Package) Op=%p\n", Op));
611
612 switch (Op->Common.Parent->Common.AmlOpcode)
613 {
614 case AML_NAME_OP:
615 /*
616 * Put the Node on the object stack (Contains the ACPI Name
617 * of this object)
618 */
619 WalkState->Operands[0] = (void *) Op->Common.Parent->Common.Node;
620 WalkState->NumOperands = 1;
621
622 Status = AcpiDsCreateNode (WalkState,
623 Op->Common.Parent->Common.Node,
624 Op->Common.Parent);
625 if (ACPI_FAILURE (Status))
626 {
627 break;
628 }
629
630 /* Fall through */
631 /*lint -fallthrough */
632
633 case AML_INT_EVAL_SUBTREE_OP:
634
635 Status = AcpiDsEvalDataObjectOperands (WalkState, Op,
636 AcpiNsGetAttachedObject (Op->Common.Parent->Common.Node));
637 break;
638
639 default:
640
641 Status = AcpiDsEvalDataObjectOperands (WalkState, Op, NULL);
642 break;
643 }
644
645 /*
646 * If a result object was returned from above, push it on the
647 * current result stack
648 */
649 if (WalkState->ResultObj)
650 {
651 Status = AcpiDsResultPush (WalkState->ResultObj, WalkState);
652 }
653 break;
654
655 case AML_TYPE_NAMED_FIELD:
656 case AML_TYPE_NAMED_COMPLEX:
657 case AML_TYPE_NAMED_SIMPLE:
658 case AML_TYPE_NAMED_NO_OBJ:
659
660 Status = AcpiDsLoad2EndOp (WalkState);
661 if (ACPI_FAILURE (Status))
662 {
663 break;
664 }
665
666 if (Op->Common.AmlOpcode == AML_REGION_OP)
667 {
668 ACPI_DEBUG_PRINT ((ACPI_DB_EXEC,
669 "Executing OpRegion Address/Length Op=%p\n", Op));
670
671 Status = AcpiDsEvalRegionOperands (WalkState, Op);
672 if (ACPI_FAILURE (Status))
673 {
674 break;
675 }
676 }
677 else if (Op->Common.AmlOpcode == AML_DATA_REGION_OP)
678 {
679 ACPI_DEBUG_PRINT ((ACPI_DB_EXEC,
680 "Executing DataTableRegion Strings Op=%p\n", Op));
681
682 Status = AcpiDsEvalTableRegionOperands (WalkState, Op);
683 if (ACPI_FAILURE (Status))
684 {
685 break;
686 }
687 }
688 else if (Op->Common.AmlOpcode == AML_BANK_FIELD_OP)
689 {
690 ACPI_DEBUG_PRINT ((ACPI_DB_EXEC,
691 "Executing BankField Op=%p\n", Op));
692
693 Status = AcpiDsEvalBankFieldOperands (WalkState, Op);
694 if (ACPI_FAILURE (Status))
695 {
696 break;
697 }
698 }
699 break;
700
701 case AML_TYPE_UNDEFINED:
702
703 ACPI_ERROR ((AE_INFO,
704 "Undefined opcode type Op=%p", Op));
705 return_ACPI_STATUS (AE_NOT_IMPLEMENTED);
706
707 case AML_TYPE_BOGUS:
708
709 ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH,
710 "Internal opcode=%X type Op=%p\n",
711 WalkState->Opcode, Op));
712 break;
713
714 default:
715
716 ACPI_ERROR ((AE_INFO,
717 "Unimplemented opcode, class=0x%X type=0x%X Opcode=0x%X Op=%p",
718 OpClass, OpType, Op->Common.AmlOpcode, Op));
719
720 Status = AE_NOT_IMPLEMENTED;
721 break;
722 }
723 }
724
725 /*
726 * ACPI 2.0 support for 64-bit integers: Truncate numeric
727 * result value if we are executing from a 32-bit ACPI table
728 */
729 (void) AcpiExTruncateFor32bitTable (WalkState->ResultObj);
730
731 /*
732 * Check if we just completed the evaluation of a
733 * conditional predicate
734 */
735 if ((ACPI_SUCCESS (Status)) &&
736 (WalkState->ControlState) &&
737 (WalkState->ControlState->Common.State ==
738 ACPI_CONTROL_PREDICATE_EXECUTING) &&
739 (WalkState->ControlState->Control.PredicateOp == Op))
740 {
741 Status = AcpiDsGetPredicateValue (WalkState, WalkState->ResultObj);
742 WalkState->ResultObj = NULL;
743 }
744
745
746 Cleanup:
747
748 if (WalkState->ResultObj)
749 {
750 /* Break to debugger to display result */
751
752 ACPI_DEBUGGER_EXEC (AcpiDbDisplayResultObject (WalkState->ResultObj,
753 WalkState));
754
755 /*
756 * Delete the result op if and only if:
757 * Parent will not use the result -- such as any
758 * non-nested type2 op in a method (parent will be method)
759 */
760 AcpiDsDeleteResultIfNotUsed (Op, WalkState->ResultObj, WalkState);
761 }
762
763 #ifdef _UNDER_DEVELOPMENT
764
765 if (WalkState->ParserState.Aml == WalkState->ParserState.AmlEnd)
766 {
767 AcpiDbMethodEnd (WalkState);
768 }
769 #endif
770
771 /* Invoke exception handler on error */
772
773 if (ACPI_FAILURE (Status))
774 {
775 Status = AcpiDsMethodError (Status, WalkState);
776 }
777
778 /* Always clear the object stack */
779
780 WalkState->NumOperands = 0;
781 return_ACPI_STATUS (Status);
782 }
783