xref: /freebsd/sys/contrib/dev/acpica/components/dispatcher/dswexec.c (revision af6a5351a1fdb1130f18be6c782c4d48916eb971)
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 <contrib/dev/acpica/include/acpi.h>
46 #include <contrib/dev/acpica/include/accommon.h>
47 #include <contrib/dev/acpica/include/acparser.h>
48 #include <contrib/dev/acpica/include/amlcode.h>
49 #include <contrib/dev/acpica/include/acdispat.h>
50 #include <contrib/dev/acpica/include/acinterp.h>
51 #include <contrib/dev/acpica/include/acnamesp.h>
52 #include <contrib/dev/acpica/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_VAR_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\n", Op));
619 
620             switch (Op->Common.Parent->Common.AmlOpcode)
621             {
622             case AML_NAME_OP:
623                 /*
624                  * Put the Node on the object stack (Contains the ACPI Name
625                  * of this object)
626                  */
627                 WalkState->Operands[0] = (void *)
628                     Op->Common.Parent->Common.Node;
629                 WalkState->NumOperands = 1;
630 
631                 Status = AcpiDsCreateNode (WalkState,
632                     Op->Common.Parent->Common.Node, Op->Common.Parent);
633                 if (ACPI_FAILURE (Status))
634                 {
635                     break;
636                 }
637 
638                 /* Fall through */
639                 /*lint -fallthrough */
640 
641             case AML_INT_EVAL_SUBTREE_OP:
642 
643                 Status = AcpiDsEvalDataObjectOperands (WalkState, Op,
644                     AcpiNsGetAttachedObject (Op->Common.Parent->Common.Node));
645                 break;
646 
647             default:
648 
649                 Status = AcpiDsEvalDataObjectOperands (WalkState, Op, NULL);
650                 break;
651             }
652 
653             /*
654              * If a result object was returned from above, push it on the
655              * current result stack
656              */
657             if (WalkState->ResultObj)
658             {
659                 Status = AcpiDsResultPush (WalkState->ResultObj, WalkState);
660             }
661             break;
662 
663         case AML_TYPE_NAMED_FIELD:
664         case AML_TYPE_NAMED_COMPLEX:
665         case AML_TYPE_NAMED_SIMPLE:
666         case AML_TYPE_NAMED_NO_OBJ:
667 
668             Status = AcpiDsLoad2EndOp (WalkState);
669             if (ACPI_FAILURE (Status))
670             {
671                 break;
672             }
673 
674             if (Op->Common.AmlOpcode == AML_REGION_OP)
675             {
676                 ACPI_DEBUG_PRINT ((ACPI_DB_EXEC,
677                     "Executing OpRegion Address/Length Op=%p\n", Op));
678 
679                 Status = AcpiDsEvalRegionOperands (WalkState, Op);
680                 if (ACPI_FAILURE (Status))
681                 {
682                     break;
683                 }
684             }
685             else if (Op->Common.AmlOpcode == AML_DATA_REGION_OP)
686             {
687                 ACPI_DEBUG_PRINT ((ACPI_DB_EXEC,
688                     "Executing DataTableRegion Strings Op=%p\n", Op));
689 
690                 Status = AcpiDsEvalTableRegionOperands (WalkState, Op);
691                 if (ACPI_FAILURE (Status))
692                 {
693                     break;
694                 }
695             }
696             else if (Op->Common.AmlOpcode == AML_BANK_FIELD_OP)
697             {
698                 ACPI_DEBUG_PRINT ((ACPI_DB_EXEC,
699                     "Executing BankField Op=%p\n", Op));
700 
701                 Status = AcpiDsEvalBankFieldOperands (WalkState, Op);
702                 if (ACPI_FAILURE (Status))
703                 {
704                     break;
705                 }
706             }
707             break;
708 
709         case AML_TYPE_UNDEFINED:
710 
711             ACPI_ERROR ((AE_INFO,
712                 "Undefined opcode type Op=%p", Op));
713             return_ACPI_STATUS (AE_NOT_IMPLEMENTED);
714 
715         case AML_TYPE_BOGUS:
716 
717             ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH,
718                 "Internal opcode=%X type Op=%p\n",
719                 WalkState->Opcode, Op));
720             break;
721 
722         default:
723 
724             ACPI_ERROR ((AE_INFO,
725                 "Unimplemented opcode, class=0x%X "
726                 "type=0x%X Opcode=0x%X Op=%p",
727                 OpClass, OpType, Op->Common.AmlOpcode, Op));
728 
729             Status = AE_NOT_IMPLEMENTED;
730             break;
731         }
732     }
733 
734     /*
735      * ACPI 2.0 support for 64-bit integers: Truncate numeric
736      * result value if we are executing from a 32-bit ACPI table
737      */
738     (void) AcpiExTruncateFor32bitTable (WalkState->ResultObj);
739 
740     /*
741      * Check if we just completed the evaluation of a
742      * conditional predicate
743      */
744     if ((ACPI_SUCCESS (Status)) &&
745         (WalkState->ControlState) &&
746         (WalkState->ControlState->Common.State ==
747             ACPI_CONTROL_PREDICATE_EXECUTING) &&
748         (WalkState->ControlState->Control.PredicateOp == Op))
749     {
750         Status = AcpiDsGetPredicateValue (WalkState, WalkState->ResultObj);
751         WalkState->ResultObj = NULL;
752     }
753 
754 
755 Cleanup:
756 
757     if (WalkState->ResultObj)
758     {
759         /* Break to debugger to display result */
760 
761         AcpiDbDisplayResultObject (WalkState->ResultObj,WalkState);
762 
763         /*
764          * Delete the result op if and only if:
765          * Parent will not use the result -- such as any
766          * non-nested type2 op in a method (parent will be method)
767          */
768         AcpiDsDeleteResultIfNotUsed (Op, WalkState->ResultObj, WalkState);
769     }
770 
771 #ifdef _UNDER_DEVELOPMENT
772 
773     if (WalkState->ParserState.Aml == WalkState->ParserState.AmlEnd)
774     {
775         AcpiDbMethodEnd (WalkState);
776     }
777 #endif
778 
779     /* Invoke exception handler on error */
780 
781     if (ACPI_FAILURE (Status))
782     {
783         Status = AcpiDsMethodError (Status, WalkState);
784     }
785 
786     /* Always clear the object stack */
787 
788     WalkState->NumOperands = 0;
789     return_ACPI_STATUS (Status);
790 }
791