xref: /freebsd/sys/contrib/dev/acpica/components/dispatcher/dswexec.c (revision 0e97acdf58fe27b09c4824a474b0344daf997c5f)
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 #define __DSWEXEC_C__
46 
47 #include <contrib/dev/acpica/include/acpi.h>
48 #include <contrib/dev/acpica/include/accommon.h>
49 #include <contrib/dev/acpica/include/acparser.h>
50 #include <contrib/dev/acpica/include/amlcode.h>
51 #include <contrib/dev/acpica/include/acdispat.h>
52 #include <contrib/dev/acpica/include/acinterp.h>
53 #include <contrib/dev/acpica/include/acnamesp.h>
54 #include <contrib/dev/acpica/include/acdebug.h>
55 
56 
57 #define _COMPONENT          ACPI_DISPATCHER
58         ACPI_MODULE_NAME    ("dswexec")
59 
60 /*
61  * Dispatch table for opcode classes
62  */
63 static ACPI_EXECUTE_OP      AcpiGbl_OpTypeDispatch [] =
64 {
65     AcpiExOpcode_0A_0T_1R,
66     AcpiExOpcode_1A_0T_0R,
67     AcpiExOpcode_1A_0T_1R,
68     AcpiExOpcode_1A_1T_0R,
69     AcpiExOpcode_1A_1T_1R,
70     AcpiExOpcode_2A_0T_0R,
71     AcpiExOpcode_2A_0T_1R,
72     AcpiExOpcode_2A_1T_1R,
73     AcpiExOpcode_2A_2T_1R,
74     AcpiExOpcode_3A_0T_0R,
75     AcpiExOpcode_3A_1T_1R,
76     AcpiExOpcode_6A_0T_1R
77 };
78 
79 
80 /*****************************************************************************
81  *
82  * FUNCTION:    AcpiDsGetPredicateValue
83  *
84  * PARAMETERS:  WalkState       - Current state of the parse tree walk
85  *              ResultObj       - if non-zero, pop result from result stack
86  *
87  * RETURN:      Status
88  *
89  * DESCRIPTION: Get the result of a predicate evaluation
90  *
91  ****************************************************************************/
92 
93 ACPI_STATUS
94 AcpiDsGetPredicateValue (
95     ACPI_WALK_STATE         *WalkState,
96     ACPI_OPERAND_OBJECT     *ResultObj)
97 {
98     ACPI_STATUS             Status = AE_OK;
99     ACPI_OPERAND_OBJECT     *ObjDesc;
100     ACPI_OPERAND_OBJECT     *LocalObjDesc = NULL;
101 
102 
103     ACPI_FUNCTION_TRACE_PTR (DsGetPredicateValue, WalkState);
104 
105 
106     WalkState->ControlState->Common.State = 0;
107 
108     if (ResultObj)
109     {
110         Status = AcpiDsResultPop (&ObjDesc, WalkState);
111         if (ACPI_FAILURE (Status))
112         {
113             ACPI_EXCEPTION ((AE_INFO, Status,
114                 "Could not get result from predicate evaluation"));
115 
116             return_ACPI_STATUS (Status);
117         }
118     }
119     else
120     {
121         Status = AcpiDsCreateOperand (WalkState, WalkState->Op, 0);
122         if (ACPI_FAILURE (Status))
123         {
124             return_ACPI_STATUS (Status);
125         }
126 
127         Status = AcpiExResolveToValue (&WalkState->Operands [0], WalkState);
128         if (ACPI_FAILURE (Status))
129         {
130             return_ACPI_STATUS (Status);
131         }
132 
133         ObjDesc = WalkState->Operands [0];
134     }
135 
136     if (!ObjDesc)
137     {
138         ACPI_ERROR ((AE_INFO,
139             "No predicate ObjDesc=%p State=%p",
140             ObjDesc, WalkState));
141 
142         return_ACPI_STATUS (AE_AML_NO_OPERAND);
143     }
144 
145     /*
146      * Result of predicate evaluation must be an Integer
147      * object. Implicitly convert the argument if necessary.
148      */
149     Status = AcpiExConvertToInteger (ObjDesc, &LocalObjDesc, 16);
150     if (ACPI_FAILURE (Status))
151     {
152         goto Cleanup;
153     }
154 
155     if (LocalObjDesc->Common.Type != ACPI_TYPE_INTEGER)
156     {
157         ACPI_ERROR ((AE_INFO,
158             "Bad predicate (not an integer) ObjDesc=%p State=%p Type=0x%X",
159             ObjDesc, WalkState, ObjDesc->Common.Type));
160 
161         Status = AE_AML_OPERAND_TYPE;
162         goto Cleanup;
163     }
164 
165     /* Truncate the predicate to 32-bits if necessary */
166 
167     (void) AcpiExTruncateFor32bitTable (LocalObjDesc);
168 
169     /*
170      * Save the result of the predicate evaluation on
171      * the control stack
172      */
173     if (LocalObjDesc->Integer.Value)
174     {
175         WalkState->ControlState->Common.Value = TRUE;
176     }
177     else
178     {
179         /*
180          * Predicate is FALSE, we will just toss the
181          * rest of the package
182          */
183         WalkState->ControlState->Common.Value = FALSE;
184         Status = AE_CTRL_FALSE;
185     }
186 
187     /* Predicate can be used for an implicit return value */
188 
189     (void) AcpiDsDoImplicitReturn (LocalObjDesc, WalkState, TRUE);
190 
191 
192 Cleanup:
193 
194     ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "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     ACPI_DEBUGGER_EXEC (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, "Exec predicate Op=%p State=%p\n",
292                         Op, WalkState));
293 
294         WalkState->ControlState->Common.State = ACPI_CONTROL_PREDICATE_EXECUTING;
295 
296         /* Save start of predicate */
297 
298         WalkState->ControlState->Control.PredicateOp = Op;
299     }
300 
301 
302     OpcodeClass = WalkState->OpInfo->Class;
303 
304     /* We want to send namepaths to the load code */
305 
306     if (Op->Common.AmlOpcode == AML_INT_NAMEPATH_OP)
307     {
308         OpcodeClass = AML_CLASS_NAMED_OBJECT;
309     }
310 
311     /*
312      * Handle the opcode based upon the opcode type
313      */
314     switch (OpcodeClass)
315     {
316     case AML_CLASS_CONTROL:
317 
318         Status = AcpiDsExecBeginControlOp (WalkState, Op);
319         break;
320 
321     case AML_CLASS_NAMED_OBJECT:
322 
323         if (WalkState->WalkType & ACPI_WALK_METHOD)
324         {
325             /*
326              * Found a named object declaration during method execution;
327              * we must enter this object into the namespace. The created
328              * object is temporary and will be deleted upon completion of
329              * the execution of this method.
330              *
331              * Note 10/2010: Except for the Scope() op. This opcode does
332              * not actually create a new object, it refers to an existing
333              * object. However, for Scope(), we want to indeed open a
334              * new scope.
335              */
336             if (Op->Common.AmlOpcode != AML_SCOPE_OP)
337             {
338                 Status = AcpiDsLoad2BeginOp (WalkState, NULL);
339             }
340             else
341             {
342                 Status = AcpiDsScopeStackPush (Op->Named.Node,
343                             Op->Named.Node->Type, WalkState);
344                 if (ACPI_FAILURE (Status))
345                 {
346                     return_ACPI_STATUS (Status);
347                 }
348             }
349         }
350         break;
351 
352     case AML_CLASS_EXECUTE:
353     case AML_CLASS_CREATE:
354 
355         break;
356 
357     default:
358 
359         break;
360     }
361 
362     /* Nothing to do here during method execution */
363 
364     return_ACPI_STATUS (Status);
365 
366 
367 ErrorExit:
368     Status = AcpiDsMethodError (Status, WalkState);
369     return_ACPI_STATUS (Status);
370 }
371 
372 
373 /*****************************************************************************
374  *
375  * FUNCTION:    AcpiDsExecEndOp
376  *
377  * PARAMETERS:  WalkState       - Current state of the parse tree walk
378  *
379  * RETURN:      Status
380  *
381  * DESCRIPTION: Ascending callback used during the execution of control
382  *              methods. The only thing we really need to do here is to
383  *              notice the beginning of IF, ELSE, and WHILE blocks.
384  *
385  ****************************************************************************/
386 
387 ACPI_STATUS
388 AcpiDsExecEndOp (
389     ACPI_WALK_STATE         *WalkState)
390 {
391     ACPI_PARSE_OBJECT       *Op;
392     ACPI_STATUS             Status = AE_OK;
393     UINT32                  OpType;
394     UINT32                  OpClass;
395     ACPI_PARSE_OBJECT       *NextOp;
396     ACPI_PARSE_OBJECT       *FirstArg;
397 
398 
399     ACPI_FUNCTION_TRACE_PTR (DsExecEndOp, WalkState);
400 
401 
402     Op      = WalkState->Op;
403     OpType  = WalkState->OpInfo->Type;
404     OpClass = WalkState->OpInfo->Class;
405 
406     if (OpClass == AML_CLASS_UNKNOWN)
407     {
408         ACPI_ERROR ((AE_INFO, "Unknown opcode 0x%X", Op->Common.AmlOpcode));
409         return_ACPI_STATUS (AE_NOT_IMPLEMENTED);
410     }
411 
412     FirstArg = Op->Common.Value.Arg;
413 
414     /* Init the walk state */
415 
416     WalkState->NumOperands = 0;
417     WalkState->OperandIndex = 0;
418     WalkState->ReturnDesc = NULL;
419     WalkState->ResultObj = NULL;
420 
421     /* Call debugger for single step support (DEBUG build only) */
422 
423     ACPI_DEBUGGER_EXEC (Status = AcpiDbSingleStep (WalkState, Op, OpClass));
424     ACPI_DEBUGGER_EXEC (if (ACPI_FAILURE (Status)) {return_ACPI_STATUS (Status);});
425 
426     /* Decode the Opcode Class */
427 
428     switch (OpClass)
429     {
430     case AML_CLASS_ARGUMENT:    /* Constants, literals, etc. */
431 
432         if (WalkState->Opcode == AML_INT_NAMEPATH_OP)
433         {
434             Status = AcpiDsEvaluateNamePath (WalkState);
435             if (ACPI_FAILURE (Status))
436             {
437                 goto Cleanup;
438             }
439         }
440         break;
441 
442     case AML_CLASS_EXECUTE:     /* Most operators with arguments */
443 
444         /* Build resolved operand stack */
445 
446         Status = AcpiDsCreateOperands (WalkState, FirstArg);
447         if (ACPI_FAILURE (Status))
448         {
449             goto Cleanup;
450         }
451 
452         /*
453          * All opcodes require operand resolution, with the only exceptions
454          * being the ObjectType and SizeOf operators.
455          */
456         if (!(WalkState->OpInfo->Flags & AML_NO_OPERAND_RESOLVE))
457         {
458             /* Resolve all operands */
459 
460             Status = AcpiExResolveOperands (WalkState->Opcode,
461                         &(WalkState->Operands [WalkState->NumOperands -1]),
462                         WalkState);
463         }
464 
465         if (ACPI_SUCCESS (Status))
466         {
467             /*
468              * Dispatch the request to the appropriate interpreter handler
469              * routine. There is one routine per opcode "type" based upon the
470              * number of opcode arguments and return type.
471              */
472             Status = AcpiGbl_OpTypeDispatch[OpType] (WalkState);
473         }
474         else
475         {
476             /*
477              * Treat constructs of the form "Store(LocalX,LocalX)" as noops when the
478              * Local is uninitialized.
479              */
480             if  ((Status == AE_AML_UNINITIALIZED_LOCAL) &&
481                 (WalkState->Opcode == AML_STORE_OP) &&
482                 (WalkState->Operands[0]->Common.Type == ACPI_TYPE_LOCAL_REFERENCE) &&
483                 (WalkState->Operands[1]->Common.Type == ACPI_TYPE_LOCAL_REFERENCE) &&
484                 (WalkState->Operands[0]->Reference.Class ==
485                  WalkState->Operands[1]->Reference.Class) &&
486                 (WalkState->Operands[0]->Reference.Value ==
487                  WalkState->Operands[1]->Reference.Value))
488             {
489                 Status = AE_OK;
490             }
491             else
492             {
493                 ACPI_EXCEPTION ((AE_INFO, Status,
494                     "While resolving operands for [%s]",
495                     AcpiPsGetOpcodeName (WalkState->Opcode)));
496             }
497         }
498 
499         /* Always delete the argument objects and clear the operand stack */
500 
501         AcpiDsClearOperands (WalkState);
502 
503         /*
504          * If a result object was returned from above, push it on the
505          * current result stack
506          */
507         if (ACPI_SUCCESS (Status) &&
508             WalkState->ResultObj)
509         {
510             Status = AcpiDsResultPush (WalkState->ResultObj, WalkState);
511         }
512         break;
513 
514     default:
515 
516         switch (OpType)
517         {
518         case AML_TYPE_CONTROL:    /* Type 1 opcode, IF/ELSE/WHILE/NOOP */
519 
520             /* 1 Operand, 0 ExternalResult, 0 InternalResult */
521 
522             Status = AcpiDsExecEndControlOp (WalkState, Op);
523 
524             break;
525 
526         case AML_TYPE_METHOD_CALL:
527             /*
528              * If the method is referenced from within a package
529              * declaration, it is not a invocation of the method, just
530              * a reference to it.
531              */
532             if ((Op->Asl.Parent) &&
533                ((Op->Asl.Parent->Asl.AmlOpcode == AML_PACKAGE_OP) ||
534                 (Op->Asl.Parent->Asl.AmlOpcode == AML_VAR_PACKAGE_OP)))
535             {
536                 ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH,
537                     "Method Reference in a Package, Op=%p\n", Op));
538 
539                 Op->Common.Node = (ACPI_NAMESPACE_NODE *) Op->Asl.Value.Arg->Asl.Node;
540                 AcpiUtAddReference (Op->Asl.Value.Arg->Asl.Node->Object);
541                 return_ACPI_STATUS (AE_OK);
542             }
543 
544             ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH,
545                 "Method invocation, Op=%p\n", Op));
546 
547             /*
548              * (AML_METHODCALL) Op->Asl.Value.Arg->Asl.Node contains
549              * the method Node pointer
550              */
551             /* NextOp points to the op that holds the method name */
552 
553             NextOp = FirstArg;
554 
555             /* NextOp points to first argument op */
556 
557             NextOp = NextOp->Common.Next;
558 
559             /*
560              * Get the method's arguments and put them on the operand stack
561              */
562             Status = AcpiDsCreateOperands (WalkState, NextOp);
563             if (ACPI_FAILURE (Status))
564             {
565                 break;
566             }
567 
568             /*
569              * Since the operands will be passed to another control method,
570              * we must resolve all local references here (Local variables,
571              * arguments to *this* method, etc.)
572              */
573             Status = AcpiDsResolveOperands (WalkState);
574             if (ACPI_FAILURE (Status))
575             {
576                 /* On error, clear all resolved operands */
577 
578                 AcpiDsClearOperands (WalkState);
579                 break;
580             }
581 
582             /*
583              * Tell the walk loop to preempt this running method and
584              * execute the new method
585              */
586             Status = AE_CTRL_TRANSFER;
587 
588             /*
589              * Return now; we don't want to disturb anything,
590              * especially the operand count!
591              */
592             return_ACPI_STATUS (Status);
593 
594         case AML_TYPE_CREATE_FIELD:
595 
596             ACPI_DEBUG_PRINT ((ACPI_DB_EXEC,
597                 "Executing CreateField Buffer/Index Op=%p\n", Op));
598 
599             Status = AcpiDsLoad2EndOp (WalkState);
600             if (ACPI_FAILURE (Status))
601             {
602                 break;
603             }
604 
605             Status = AcpiDsEvalBufferFieldOperands (WalkState, Op);
606             break;
607 
608 
609         case AML_TYPE_CREATE_OBJECT:
610 
611             ACPI_DEBUG_PRINT ((ACPI_DB_EXEC,
612                 "Executing CreateObject (Buffer/Package) Op=%p\n", Op));
613 
614             switch (Op->Common.Parent->Common.AmlOpcode)
615             {
616             case AML_NAME_OP:
617                 /*
618                  * Put the Node on the object stack (Contains the ACPI Name
619                  * of this object)
620                  */
621                 WalkState->Operands[0] = (void *) Op->Common.Parent->Common.Node;
622                 WalkState->NumOperands = 1;
623 
624                 Status = AcpiDsCreateNode (WalkState,
625                             Op->Common.Parent->Common.Node,
626                             Op->Common.Parent);
627                 if (ACPI_FAILURE (Status))
628                 {
629                     break;
630                 }
631 
632                 /* Fall through */
633                 /*lint -fallthrough */
634 
635             case AML_INT_EVAL_SUBTREE_OP:
636 
637                 Status = AcpiDsEvalDataObjectOperands (WalkState, Op,
638                             AcpiNsGetAttachedObject (Op->Common.Parent->Common.Node));
639                 break;
640 
641             default:
642 
643                 Status = AcpiDsEvalDataObjectOperands (WalkState, Op, NULL);
644                 break;
645             }
646 
647             /*
648              * If a result object was returned from above, push it on the
649              * current result stack
650              */
651             if (WalkState->ResultObj)
652             {
653                 Status = AcpiDsResultPush (WalkState->ResultObj, WalkState);
654             }
655             break;
656 
657         case AML_TYPE_NAMED_FIELD:
658         case AML_TYPE_NAMED_COMPLEX:
659         case AML_TYPE_NAMED_SIMPLE:
660         case AML_TYPE_NAMED_NO_OBJ:
661 
662             Status = AcpiDsLoad2EndOp (WalkState);
663             if (ACPI_FAILURE (Status))
664             {
665                 break;
666             }
667 
668             if (Op->Common.AmlOpcode == AML_REGION_OP)
669             {
670                 ACPI_DEBUG_PRINT ((ACPI_DB_EXEC,
671                     "Executing OpRegion Address/Length Op=%p\n", Op));
672 
673                 Status = AcpiDsEvalRegionOperands (WalkState, Op);
674                 if (ACPI_FAILURE (Status))
675                 {
676                     break;
677                 }
678             }
679             else if (Op->Common.AmlOpcode == AML_DATA_REGION_OP)
680             {
681                 ACPI_DEBUG_PRINT ((ACPI_DB_EXEC,
682                     "Executing DataTableRegion Strings Op=%p\n", Op));
683 
684                 Status = AcpiDsEvalTableRegionOperands (WalkState, Op);
685                 if (ACPI_FAILURE (Status))
686                 {
687                     break;
688                 }
689             }
690             else if (Op->Common.AmlOpcode == AML_BANK_FIELD_OP)
691             {
692                 ACPI_DEBUG_PRINT ((ACPI_DB_EXEC,
693                     "Executing BankField Op=%p\n", Op));
694 
695                 Status = AcpiDsEvalBankFieldOperands (WalkState, Op);
696                 if (ACPI_FAILURE (Status))
697                 {
698                     break;
699                 }
700             }
701             break;
702 
703         case AML_TYPE_UNDEFINED:
704 
705             ACPI_ERROR ((AE_INFO,
706                 "Undefined opcode type Op=%p", Op));
707             return_ACPI_STATUS (AE_NOT_IMPLEMENTED);
708 
709         case AML_TYPE_BOGUS:
710 
711             ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH,
712                 "Internal opcode=%X type Op=%p\n",
713                 WalkState->Opcode, Op));
714             break;
715 
716         default:
717 
718             ACPI_ERROR ((AE_INFO,
719                 "Unimplemented opcode, class=0x%X type=0x%X Opcode=0x%X Op=%p",
720                 OpClass, OpType, Op->Common.AmlOpcode, Op));
721 
722             Status = AE_NOT_IMPLEMENTED;
723             break;
724         }
725     }
726 
727     /*
728      * ACPI 2.0 support for 64-bit integers: Truncate numeric
729      * result value if we are executing from a 32-bit ACPI table
730      */
731     (void) AcpiExTruncateFor32bitTable (WalkState->ResultObj);
732 
733     /*
734      * Check if we just completed the evaluation of a
735      * conditional predicate
736      */
737     if ((ACPI_SUCCESS (Status)) &&
738         (WalkState->ControlState) &&
739         (WalkState->ControlState->Common.State ==
740             ACPI_CONTROL_PREDICATE_EXECUTING) &&
741         (WalkState->ControlState->Control.PredicateOp == Op))
742     {
743         Status = AcpiDsGetPredicateValue (WalkState, WalkState->ResultObj);
744         WalkState->ResultObj = NULL;
745     }
746 
747 
748 Cleanup:
749 
750     if (WalkState->ResultObj)
751     {
752         /* Break to debugger to display result */
753 
754         ACPI_DEBUGGER_EXEC (AcpiDbDisplayResultObject (WalkState->ResultObj,
755                                 WalkState));
756 
757         /*
758          * Delete the result op if and only if:
759          * Parent will not use the result -- such as any
760          * non-nested type2 op in a method (parent will be method)
761          */
762         AcpiDsDeleteResultIfNotUsed (Op, WalkState->ResultObj, WalkState);
763     }
764 
765 #ifdef _UNDER_DEVELOPMENT
766 
767     if (WalkState->ParserState.Aml == WalkState->ParserState.AmlEnd)
768     {
769         AcpiDbMethodEnd (WalkState);
770     }
771 #endif
772 
773     /* Invoke exception handler on error */
774 
775     if (ACPI_FAILURE (Status))
776     {
777         Status = AcpiDsMethodError (Status, WalkState);
778     }
779 
780     /* Always clear the object stack */
781 
782     WalkState->NumOperands = 0;
783     return_ACPI_STATUS (Status);
784 }
785