a5b5db842de07255652909e2fbbdb7fb7682ae06
[reactos.git] / drivers / bus / acpi / acpica / dispatcher / dswexec.c
1 /******************************************************************************
2 *
3 * Module Name: dswexec - Dispatcher method execution callbacks;
4 * dispatch to interpreter.
5 *
6 *****************************************************************************/
7
8 /*
9 * Copyright (C) 2000 - 2017, 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
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,
148 ACPI_STRTOUL_BASE16);
149 if (ACPI_FAILURE (Status))
150 {
151 goto Cleanup;
152 }
153
154 if (LocalObjDesc->Common.Type != ACPI_TYPE_INTEGER)
155 {
156 ACPI_ERROR ((AE_INFO,
157 "Bad predicate (not an integer) ObjDesc=%p State=%p Type=0x%X",
158 ObjDesc, WalkState, ObjDesc->Common.Type));
159
160 Status = AE_AML_OPERAND_TYPE;
161 goto Cleanup;
162 }
163
164 /* Truncate the predicate to 32-bits if necessary */
165
166 (void) AcpiExTruncateFor32bitTable (LocalObjDesc);
167
168 /*
169 * Save the result of the predicate evaluation on
170 * the control stack
171 */
172 if (LocalObjDesc->Integer.Value)
173 {
174 WalkState->ControlState->Common.Value = TRUE;
175 }
176 else
177 {
178 /*
179 * Predicate is FALSE, we will just toss the
180 * rest of the package
181 */
182 WalkState->ControlState->Common.Value = FALSE;
183 Status = AE_CTRL_FALSE;
184 }
185
186 /* Predicate can be used for an implicit return value */
187
188 (void) AcpiDsDoImplicitReturn (LocalObjDesc, WalkState, TRUE);
189
190
191 Cleanup:
192
193 ACPI_DEBUG_PRINT ((ACPI_DB_EXEC,
194 "Completed a predicate eval=%X Op=%p\n",
195 WalkState->ControlState->Common.Value, WalkState->Op));
196
197 /* Break to debugger to display result */
198
199 AcpiDbDisplayResultObject (LocalObjDesc, WalkState);
200
201 /*
202 * Delete the predicate result object (we know that
203 * we don't need it anymore)
204 */
205 if (LocalObjDesc != ObjDesc)
206 {
207 AcpiUtRemoveReference (LocalObjDesc);
208 }
209 AcpiUtRemoveReference (ObjDesc);
210
211 WalkState->ControlState->Common.State = ACPI_CONTROL_NORMAL;
212 return_ACPI_STATUS (Status);
213 }
214
215
216 /*****************************************************************************
217 *
218 * FUNCTION: AcpiDsExecBeginOp
219 *
220 * PARAMETERS: WalkState - Current state of the parse tree walk
221 * OutOp - Where to return op if a new one is created
222 *
223 * RETURN: Status
224 *
225 * DESCRIPTION: Descending callback used during the execution of control
226 * methods. This is where most operators and operands are
227 * dispatched to the interpreter.
228 *
229 ****************************************************************************/
230
231 ACPI_STATUS
232 AcpiDsExecBeginOp (
233 ACPI_WALK_STATE *WalkState,
234 ACPI_PARSE_OBJECT **OutOp)
235 {
236 ACPI_PARSE_OBJECT *Op;
237 ACPI_STATUS Status = AE_OK;
238 UINT32 OpcodeClass;
239
240
241 ACPI_FUNCTION_TRACE_PTR (DsExecBeginOp, WalkState);
242
243
244 Op = WalkState->Op;
245 if (!Op)
246 {
247 Status = AcpiDsLoad2BeginOp (WalkState, OutOp);
248 if (ACPI_FAILURE (Status))
249 {
250 goto ErrorExit;
251 }
252
253 Op = *OutOp;
254 WalkState->Op = Op;
255 WalkState->Opcode = Op->Common.AmlOpcode;
256 WalkState->OpInfo = AcpiPsGetOpcodeInfo (Op->Common.AmlOpcode);
257
258 if (AcpiNsOpensScope (WalkState->OpInfo->ObjectType))
259 {
260 ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH,
261 "(%s) Popping scope for Op %p\n",
262 AcpiUtGetTypeName (WalkState->OpInfo->ObjectType), Op));
263
264 Status = AcpiDsScopeStackPop (WalkState);
265 if (ACPI_FAILURE (Status))
266 {
267 goto ErrorExit;
268 }
269 }
270 }
271
272 if (Op == WalkState->Origin)
273 {
274 if (OutOp)
275 {
276 *OutOp = Op;
277 }
278
279 return_ACPI_STATUS (AE_OK);
280 }
281
282 /*
283 * If the previous opcode was a conditional, this opcode
284 * must be the beginning of the associated predicate.
285 * Save this knowledge in the current scope descriptor
286 */
287 if ((WalkState->ControlState) &&
288 (WalkState->ControlState->Common.State ==
289 ACPI_CONTROL_CONDITIONAL_EXECUTING))
290 {
291 ACPI_DEBUG_PRINT ((ACPI_DB_EXEC,
292 "Exec predicate Op=%p State=%p\n",
293 Op, WalkState));
294
295 WalkState->ControlState->Common.State =
296 ACPI_CONTROL_PREDICATE_EXECUTING;
297
298 /* Save start of predicate */
299
300 WalkState->ControlState->Control.PredicateOp = Op;
301 }
302
303
304 OpcodeClass = WalkState->OpInfo->Class;
305
306 /* We want to send namepaths to the load code */
307
308 if (Op->Common.AmlOpcode == AML_INT_NAMEPATH_OP)
309 {
310 OpcodeClass = AML_CLASS_NAMED_OBJECT;
311 }
312
313 /*
314 * Handle the opcode based upon the opcode type
315 */
316 switch (OpcodeClass)
317 {
318 case AML_CLASS_CONTROL:
319
320 Status = AcpiDsExecBeginControlOp (WalkState, Op);
321 break;
322
323 case AML_CLASS_NAMED_OBJECT:
324
325 if (WalkState->WalkType & ACPI_WALK_METHOD)
326 {
327 /*
328 * Found a named object declaration during method execution;
329 * we must enter this object into the namespace. The created
330 * object is temporary and will be deleted upon completion of
331 * the execution of this method.
332 *
333 * Note 10/2010: Except for the Scope() op. This opcode does
334 * not actually create a new object, it refers to an existing
335 * object. However, for Scope(), we want to indeed open a
336 * new scope.
337 */
338 if (Op->Common.AmlOpcode != AML_SCOPE_OP)
339 {
340 Status = AcpiDsLoad2BeginOp (WalkState, NULL);
341 }
342 else
343 {
344 Status = AcpiDsScopeStackPush (
345 Op->Named.Node, Op->Named.Node->Type, WalkState);
346 if (ACPI_FAILURE (Status))
347 {
348 return_ACPI_STATUS (Status);
349 }
350 }
351 }
352 break;
353
354 case AML_CLASS_EXECUTE:
355 case AML_CLASS_CREATE:
356
357 break;
358
359 default:
360
361 break;
362 }
363
364 /* Nothing to do here during method execution */
365
366 return_ACPI_STATUS (Status);
367
368
369 ErrorExit:
370 Status = AcpiDsMethodError (Status, WalkState);
371 return_ACPI_STATUS (Status);
372 }
373
374
375 /*****************************************************************************
376 *
377 * FUNCTION: AcpiDsExecEndOp
378 *
379 * PARAMETERS: WalkState - Current state of the parse tree walk
380 *
381 * RETURN: Status
382 *
383 * DESCRIPTION: Ascending callback used during the execution of control
384 * methods. The only thing we really need to do here is to
385 * notice the beginning of IF, ELSE, and WHILE blocks.
386 *
387 ****************************************************************************/
388
389 ACPI_STATUS
390 AcpiDsExecEndOp (
391 ACPI_WALK_STATE *WalkState)
392 {
393 ACPI_PARSE_OBJECT *Op;
394 ACPI_STATUS Status = AE_OK;
395 UINT32 OpType;
396 UINT32 OpClass;
397 ACPI_PARSE_OBJECT *NextOp;
398 ACPI_PARSE_OBJECT *FirstArg;
399
400
401 ACPI_FUNCTION_TRACE_PTR (DsExecEndOp, WalkState);
402
403
404 Op = WalkState->Op;
405 OpType = WalkState->OpInfo->Type;
406 OpClass = WalkState->OpInfo->Class;
407
408 if (OpClass == AML_CLASS_UNKNOWN)
409 {
410 ACPI_ERROR ((AE_INFO, "Unknown opcode 0x%X", Op->Common.AmlOpcode));
411 return_ACPI_STATUS (AE_NOT_IMPLEMENTED);
412 }
413
414 FirstArg = Op->Common.Value.Arg;
415
416 /* Init the walk state */
417
418 WalkState->NumOperands = 0;
419 WalkState->OperandIndex = 0;
420 WalkState->ReturnDesc = NULL;
421 WalkState->ResultObj = NULL;
422
423 /* Call debugger for single step support (DEBUG build only) */
424
425 Status = AcpiDbSingleStep (WalkState, Op, OpClass);
426 if (ACPI_FAILURE (Status))
427 {
428 return_ACPI_STATUS (Status);
429 }
430
431 /* Decode the Opcode Class */
432
433 switch (OpClass)
434 {
435 case AML_CLASS_ARGUMENT: /* Constants, literals, etc. */
436
437 if (WalkState->Opcode == AML_INT_NAMEPATH_OP)
438 {
439 Status = AcpiDsEvaluateNamePath (WalkState);
440 if (ACPI_FAILURE (Status))
441 {
442 goto Cleanup;
443 }
444 }
445 break;
446
447 case AML_CLASS_EXECUTE: /* Most operators with arguments */
448
449 /* Build resolved operand stack */
450
451 Status = AcpiDsCreateOperands (WalkState, FirstArg);
452 if (ACPI_FAILURE (Status))
453 {
454 goto Cleanup;
455 }
456
457 /*
458 * All opcodes require operand resolution, with the only exceptions
459 * being the ObjectType and SizeOf operators.
460 */
461 if (!(WalkState->OpInfo->Flags & AML_NO_OPERAND_RESOLVE))
462 {
463 /* Resolve all operands */
464
465 Status = AcpiExResolveOperands (WalkState->Opcode,
466 &(WalkState->Operands [WalkState->NumOperands -1]),
467 WalkState);
468 }
469
470 if (ACPI_SUCCESS (Status))
471 {
472 /*
473 * Dispatch the request to the appropriate interpreter handler
474 * routine. There is one routine per opcode "type" based upon the
475 * number of opcode arguments and return type.
476 */
477 Status = AcpiGbl_OpTypeDispatch[OpType] (WalkState);
478 }
479 else
480 {
481 /*
482 * Treat constructs of the form "Store(LocalX,LocalX)" as noops when the
483 * Local is uninitialized.
484 */
485 if ((Status == AE_AML_UNINITIALIZED_LOCAL) &&
486 (WalkState->Opcode == AML_STORE_OP) &&
487 (WalkState->Operands[0]->Common.Type == ACPI_TYPE_LOCAL_REFERENCE) &&
488 (WalkState->Operands[1]->Common.Type == ACPI_TYPE_LOCAL_REFERENCE) &&
489 (WalkState->Operands[0]->Reference.Class ==
490 WalkState->Operands[1]->Reference.Class) &&
491 (WalkState->Operands[0]->Reference.Value ==
492 WalkState->Operands[1]->Reference.Value))
493 {
494 Status = AE_OK;
495 }
496 else
497 {
498 ACPI_EXCEPTION ((AE_INFO, Status,
499 "While resolving operands for [%s]",
500 AcpiPsGetOpcodeName (WalkState->Opcode)));
501 }
502 }
503
504 /* Always delete the argument objects and clear the operand stack */
505
506 AcpiDsClearOperands (WalkState);
507
508 /*
509 * If a result object was returned from above, push it on the
510 * current result stack
511 */
512 if (ACPI_SUCCESS (Status) &&
513 WalkState->ResultObj)
514 {
515 Status = AcpiDsResultPush (WalkState->ResultObj, WalkState);
516 }
517 break;
518
519 default:
520
521 switch (OpType)
522 {
523 case AML_TYPE_CONTROL: /* Type 1 opcode, IF/ELSE/WHILE/NOOP */
524
525 /* 1 Operand, 0 ExternalResult, 0 InternalResult */
526
527 Status = AcpiDsExecEndControlOp (WalkState, Op);
528
529 break;
530
531 case AML_TYPE_METHOD_CALL:
532 /*
533 * If the method is referenced from within a package
534 * declaration, it is not a invocation of the method, just
535 * a reference to it.
536 */
537 if ((Op->Asl.Parent) &&
538 ((Op->Asl.Parent->Asl.AmlOpcode == AML_PACKAGE_OP) ||
539 (Op->Asl.Parent->Asl.AmlOpcode == AML_VARIABLE_PACKAGE_OP)))
540 {
541 ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH,
542 "Method Reference in a Package, Op=%p\n", Op));
543
544 Op->Common.Node = (ACPI_NAMESPACE_NODE *)
545 Op->Asl.Value.Arg->Asl.Node;
546 AcpiUtAddReference (Op->Asl.Value.Arg->Asl.Node->Object);
547 return_ACPI_STATUS (AE_OK);
548 }
549
550 ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH,
551 "Method invocation, Op=%p\n", Op));
552
553 /*
554 * (AML_METHODCALL) Op->Asl.Value.Arg->Asl.Node contains
555 * the method Node pointer
556 */
557 /* NextOp points to the op that holds the method name */
558
559 NextOp = FirstArg;
560
561 /* NextOp points to first argument op */
562
563 NextOp = NextOp->Common.Next;
564
565 /*
566 * Get the method's arguments and put them on the operand stack
567 */
568 Status = AcpiDsCreateOperands (WalkState, NextOp);
569 if (ACPI_FAILURE (Status))
570 {
571 break;
572 }
573
574 /*
575 * Since the operands will be passed to another control method,
576 * we must resolve all local references here (Local variables,
577 * arguments to *this* method, etc.)
578 */
579 Status = AcpiDsResolveOperands (WalkState);
580 if (ACPI_FAILURE (Status))
581 {
582 /* On error, clear all resolved operands */
583
584 AcpiDsClearOperands (WalkState);
585 break;
586 }
587
588 /*
589 * Tell the walk loop to preempt this running method and
590 * execute the new method
591 */
592 Status = AE_CTRL_TRANSFER;
593
594 /*
595 * Return now; we don't want to disturb anything,
596 * especially the operand count!
597 */
598 return_ACPI_STATUS (Status);
599
600 case AML_TYPE_CREATE_FIELD:
601
602 ACPI_DEBUG_PRINT ((ACPI_DB_EXEC,
603 "Executing CreateField Buffer/Index Op=%p\n", Op));
604
605 Status = AcpiDsLoad2EndOp (WalkState);
606 if (ACPI_FAILURE (Status))
607 {
608 break;
609 }
610
611 Status = AcpiDsEvalBufferFieldOperands (WalkState, Op);
612 break;
613
614
615 case AML_TYPE_CREATE_OBJECT:
616
617 ACPI_DEBUG_PRINT ((ACPI_DB_EXEC,
618 "Executing CreateObject (Buffer/Package) Op=%p AMLPtr=%p\n",
619 Op, Op->Named.Data));
620
621 switch (Op->Common.Parent->Common.AmlOpcode)
622 {
623 case AML_NAME_OP:
624 /*
625 * Put the Node on the object stack (Contains the ACPI Name
626 * of this object)
627 */
628 WalkState->Operands[0] = (void *)
629 Op->Common.Parent->Common.Node;
630 WalkState->NumOperands = 1;
631
632 Status = AcpiDsCreateNode (WalkState,
633 Op->Common.Parent->Common.Node, Op->Common.Parent);
634 if (ACPI_FAILURE (Status))
635 {
636 break;
637 }
638
639 /* Fall through */
640 /*lint -fallthrough */
641
642 case AML_INT_EVAL_SUBTREE_OP:
643
644 Status = AcpiDsEvalDataObjectOperands (WalkState, Op,
645 AcpiNsGetAttachedObject (Op->Common.Parent->Common.Node));
646 break;
647
648 default:
649
650 Status = AcpiDsEvalDataObjectOperands (WalkState, Op, NULL);
651 break;
652 }
653
654 /*
655 * If a result object was returned from above, push it on the
656 * current result stack
657 */
658 if (WalkState->ResultObj)
659 {
660 Status = AcpiDsResultPush (WalkState->ResultObj, WalkState);
661 }
662 break;
663
664 case AML_TYPE_NAMED_FIELD:
665 case AML_TYPE_NAMED_COMPLEX:
666 case AML_TYPE_NAMED_SIMPLE:
667 case AML_TYPE_NAMED_NO_OBJ:
668
669 Status = AcpiDsLoad2EndOp (WalkState);
670 if (ACPI_FAILURE (Status))
671 {
672 break;
673 }
674
675 if (Op->Common.AmlOpcode == AML_REGION_OP)
676 {
677 ACPI_DEBUG_PRINT ((ACPI_DB_EXEC,
678 "Executing OpRegion Address/Length Op=%p\n", Op));
679
680 Status = AcpiDsEvalRegionOperands (WalkState, Op);
681 if (ACPI_FAILURE (Status))
682 {
683 break;
684 }
685 }
686 else if (Op->Common.AmlOpcode == AML_DATA_REGION_OP)
687 {
688 ACPI_DEBUG_PRINT ((ACPI_DB_EXEC,
689 "Executing DataTableRegion Strings Op=%p\n", Op));
690
691 Status = AcpiDsEvalTableRegionOperands (WalkState, Op);
692 if (ACPI_FAILURE (Status))
693 {
694 break;
695 }
696 }
697 else if (Op->Common.AmlOpcode == AML_BANK_FIELD_OP)
698 {
699 ACPI_DEBUG_PRINT ((ACPI_DB_EXEC,
700 "Executing BankField Op=%p\n", Op));
701
702 Status = AcpiDsEvalBankFieldOperands (WalkState, Op);
703 if (ACPI_FAILURE (Status))
704 {
705 break;
706 }
707 }
708 break;
709
710 case AML_TYPE_UNDEFINED:
711
712 ACPI_ERROR ((AE_INFO,
713 "Undefined opcode type Op=%p", Op));
714 return_ACPI_STATUS (AE_NOT_IMPLEMENTED);
715
716 case AML_TYPE_BOGUS:
717
718 ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH,
719 "Internal opcode=%X type Op=%p\n",
720 WalkState->Opcode, Op));
721 break;
722
723 default:
724
725 ACPI_ERROR ((AE_INFO,
726 "Unimplemented opcode, class=0x%X "
727 "type=0x%X Opcode=0x%X Op=%p",
728 OpClass, OpType, Op->Common.AmlOpcode, Op));
729
730 Status = AE_NOT_IMPLEMENTED;
731 break;
732 }
733 }
734
735 /*
736 * ACPI 2.0 support for 64-bit integers: Truncate numeric
737 * result value if we are executing from a 32-bit ACPI table
738 */
739 (void) AcpiExTruncateFor32bitTable (WalkState->ResultObj);
740
741 /*
742 * Check if we just completed the evaluation of a
743 * conditional predicate
744 */
745 if ((ACPI_SUCCESS (Status)) &&
746 (WalkState->ControlState) &&
747 (WalkState->ControlState->Common.State ==
748 ACPI_CONTROL_PREDICATE_EXECUTING) &&
749 (WalkState->ControlState->Control.PredicateOp == Op))
750 {
751 Status = AcpiDsGetPredicateValue (WalkState, WalkState->ResultObj);
752 WalkState->ResultObj = NULL;
753 }
754
755
756 Cleanup:
757
758 if (WalkState->ResultObj)
759 {
760 /* Break to debugger to display result */
761
762 AcpiDbDisplayResultObject (WalkState->ResultObj,WalkState);
763
764 /*
765 * Delete the result op if and only if:
766 * Parent will not use the result -- such as any
767 * non-nested type2 op in a method (parent will be method)
768 */
769 AcpiDsDeleteResultIfNotUsed (Op, WalkState->ResultObj, WalkState);
770 }
771
772 #ifdef _UNDER_DEVELOPMENT
773
774 if (WalkState->ParserState.Aml == WalkState->ParserState.AmlEnd)
775 {
776 AcpiDbMethodEnd (WalkState);
777 }
778 #endif
779
780 /* Invoke exception handler on error */
781
782 if (ACPI_FAILURE (Status))
783 {
784 Status = AcpiDsMethodError (Status, WalkState);
785 }
786
787 /* Always clear the object stack */
788
789 WalkState->NumOperands = 0;
790 return_ACPI_STATUS (Status);
791 }