1 /******************************************************************************
2 *
3 * Module Name: dswexec - Dispatcher method execution callbacks;
4 * dispatch to interpreter.
5 *
6 *****************************************************************************/
7
8 /******************************************************************************
9 *
10 * 1. Copyright Notice
11 *
12 * Some or all of this work - Copyright (c) 1999 - 2018, Intel Corp.
13 * All rights reserved.
14 *
15 * 2. License
16 *
17 * 2.1. This is your license from Intel Corp. under its intellectual property
18 * rights. You may have additional license terms from the party that provided
19 * you this software, covering your right to use that party's intellectual
20 * property rights.
21 *
22 * 2.2. Intel grants, free of charge, to any person ("Licensee") obtaining a
23 * copy of the source code appearing in this file ("Covered Code") an
24 * irrevocable, perpetual, worldwide license under Intel's copyrights in the
25 * base code distributed originally by Intel ("Original Intel Code") to copy,
26 * make derivatives, distribute, use and display any portion of the Covered
27 * Code in any form, with the right to sublicense such rights; and
28 *
29 * 2.3. Intel grants Licensee a non-exclusive and non-transferable patent
30 * license (with the right to sublicense), under only those claims of Intel
31 * patents that are infringed by the Original Intel Code, to make, use, sell,
32 * offer to sell, and import the Covered Code and derivative works thereof
33 * solely to the minimum extent necessary to exercise the above copyright
34 * license, and in no event shall the patent license extend to any additions
35 * to or modifications of the Original Intel Code. No other license or right
36 * is granted directly or by implication, estoppel or otherwise;
37 *
38 * The above copyright and patent license is granted only if the following
39 * conditions are met:
40 *
41 * 3. Conditions
42 *
43 * 3.1. Redistribution of Source with Rights to Further Distribute Source.
44 * Redistribution of source code of any substantial portion of the Covered
45 * Code or modification with rights to further distribute source must include
46 * the above Copyright Notice, the above License, this list of Conditions,
47 * and the following Disclaimer and Export Compliance provision. In addition,
48 * Licensee must cause all Covered Code to which Licensee contributes to
49 * contain a file documenting the changes Licensee made to create that Covered
50 * Code and the date of any change. Licensee must include in that file the
51 * documentation of any changes made by any predecessor Licensee. Licensee
52 * must include a prominent statement that the modification is derived,
53 * directly or indirectly, from Original Intel Code.
54 *
55 * 3.2. Redistribution of Source with no Rights to Further Distribute Source.
56 * Redistribution of source code of any substantial portion of the Covered
57 * Code or modification without rights to further distribute source must
58 * include the following Disclaimer and Export Compliance provision in the
59 * documentation and/or other materials provided with distribution. In
60 * addition, Licensee may not authorize further sublicense of source of any
61 * portion of the Covered Code, and must include terms to the effect that the
62 * license from Licensee to its licensee is limited to the intellectual
63 * property embodied in the software Licensee provides to its licensee, and
64 * not to intellectual property embodied in modifications its licensee may
65 * make.
66 *
67 * 3.3. Redistribution of Executable. Redistribution in executable form of any
68 * substantial portion of the Covered Code or modification must reproduce the
69 * above Copyright Notice, and the following Disclaimer and Export Compliance
70 * provision in the documentation and/or other materials provided with the
71 * distribution.
72 *
73 * 3.4. Intel retains all right, title, and interest in and to the Original
74 * Intel Code.
75 *
76 * 3.5. Neither the name Intel nor any other trademark owned or controlled by
77 * Intel shall be used in advertising or otherwise to promote the sale, use or
78 * other dealings in products derived from or relating to the Covered Code
79 * without prior written authorization from Intel.
80 *
81 * 4. Disclaimer and Export Compliance
82 *
83 * 4.1. INTEL MAKES NO WARRANTY OF ANY KIND REGARDING ANY SOFTWARE PROVIDED
84 * HERE. ANY SOFTWARE ORIGINATING FROM INTEL OR DERIVED FROM INTEL SOFTWARE
85 * IS PROVIDED "AS IS," AND INTEL WILL NOT PROVIDE ANY SUPPORT, ASSISTANCE,
86 * INSTALLATION, TRAINING OR OTHER SERVICES. INTEL WILL NOT PROVIDE ANY
87 * UPDATES, ENHANCEMENTS OR EXTENSIONS. INTEL SPECIFICALLY DISCLAIMS ANY
88 * IMPLIED WARRANTIES OF MERCHANTABILITY, NONINFRINGEMENT AND FITNESS FOR A
89 * PARTICULAR PURPOSE.
90 *
91 * 4.2. IN NO EVENT SHALL INTEL HAVE ANY LIABILITY TO LICENSEE, ITS LICENSEES
92 * OR ANY OTHER THIRD PARTY, FOR ANY LOST PROFITS, LOST DATA, LOSS OF USE OR
93 * COSTS OF PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES, OR FOR ANY INDIRECT,
94 * SPECIAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THIS AGREEMENT, UNDER ANY
95 * CAUSE OF ACTION OR THEORY OF LIABILITY, AND IRRESPECTIVE OF WHETHER INTEL
96 * HAS ADVANCE NOTICE OF THE POSSIBILITY OF SUCH DAMAGES. THESE LIMITATIONS
97 * SHALL APPLY NOTWITHSTANDING THE FAILURE OF THE ESSENTIAL PURPOSE OF ANY
98 * LIMITED REMEDY.
99 *
100 * 4.3. Licensee shall not export, either directly or indirectly, any of this
101 * software or system incorporating such software without first obtaining any
102 * required license or other approval from the U. S. Department of Commerce or
103 * any other agency or department of the United States Government. In the
104 * event Licensee exports any such software from the United States or
105 * re-exports any such software from a foreign destination, Licensee shall
106 * ensure that the distribution and export/re-export of the software is in
107 * compliance with all laws, regulations, orders, or other restrictions of the
108 * U.S. Export Administration Regulations. Licensee agrees that neither it nor
109 * any of its subsidiaries will export/re-export any technical data, process,
110 * software, or service, directly or indirectly, to any country for which the
111 * United States government or any agency thereof requires an export license,
112 * other governmental approval, or letter of assurance, without first obtaining
113 * such license, approval or letter.
114 *
115 *****************************************************************************
116 *
117 * Alternatively, you may choose to be licensed under the terms of the
118 * following license:
119 *
120 * Redistribution and use in source and binary forms, with or without
121 * modification, are permitted provided that the following conditions
122 * are met:
123 * 1. Redistributions of source code must retain the above copyright
124 * notice, this list of conditions, and the following disclaimer,
125 * without modification.
126 * 2. Redistributions in binary form must reproduce at minimum a disclaimer
127 * substantially similar to the "NO WARRANTY" disclaimer below
128 * ("Disclaimer") and any redistribution must be conditioned upon
129 * including a substantially similar Disclaimer requirement for further
130 * binary redistribution.
131 * 3. Neither the names of the above-listed copyright holders nor the names
132 * of any contributors may be used to endorse or promote products derived
133 * from this software without specific prior written permission.
134 *
135 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
136 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
137 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
138 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
139 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
140 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
141 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
142 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
143 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
144 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
145 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
146 *
147 * Alternatively, you may choose to be licensed under the terms of the
148 * GNU General Public License ("GPL") version 2 as published by the Free
149 * Software Foundation.
150 *
151 *****************************************************************************/
152
153 #include <contrib/dev/acpica/include/acpi.h>
154 #include <contrib/dev/acpica/include/accommon.h>
155 #include <contrib/dev/acpica/include/acparser.h>
156 #include <contrib/dev/acpica/include/amlcode.h>
157 #include <contrib/dev/acpica/include/acdispat.h>
158 #include <contrib/dev/acpica/include/acinterp.h>
159 #include <contrib/dev/acpica/include/acnamesp.h>
160 #include <contrib/dev/acpica/include/acdebug.h>
161
162
163 #define _COMPONENT ACPI_DISPATCHER
164 ACPI_MODULE_NAME ("dswexec")
165
166 /*
167 * Dispatch table for opcode classes
168 */
169 static ACPI_EXECUTE_OP AcpiGbl_OpTypeDispatch [] =
170 {
171 AcpiExOpcode_0A_0T_1R,
172 AcpiExOpcode_1A_0T_0R,
173 AcpiExOpcode_1A_0T_1R,
174 AcpiExOpcode_1A_1T_0R,
175 AcpiExOpcode_1A_1T_1R,
176 AcpiExOpcode_2A_0T_0R,
177 AcpiExOpcode_2A_0T_1R,
178 AcpiExOpcode_2A_1T_1R,
179 AcpiExOpcode_2A_2T_1R,
180 AcpiExOpcode_3A_0T_0R,
181 AcpiExOpcode_3A_1T_1R,
182 AcpiExOpcode_6A_0T_1R
183 };
184
185
186 /*****************************************************************************
187 *
188 * FUNCTION: AcpiDsGetPredicateValue
189 *
190 * PARAMETERS: WalkState - Current state of the parse tree walk
191 * ResultObj - if non-zero, pop result from result stack
192 *
193 * RETURN: Status
194 *
195 * DESCRIPTION: Get the result of a predicate evaluation
196 *
197 ****************************************************************************/
198
199 ACPI_STATUS
AcpiDsGetPredicateValue(ACPI_WALK_STATE * WalkState,ACPI_OPERAND_OBJECT * ResultObj)200 AcpiDsGetPredicateValue (
201 ACPI_WALK_STATE *WalkState,
202 ACPI_OPERAND_OBJECT *ResultObj)
203 {
204 ACPI_STATUS Status = AE_OK;
205 ACPI_OPERAND_OBJECT *ObjDesc;
206 ACPI_OPERAND_OBJECT *LocalObjDesc = NULL;
207
208
209 ACPI_FUNCTION_TRACE_PTR (DsGetPredicateValue, WalkState);
210
211
212 WalkState->ControlState->Common.State = 0;
213
214 if (ResultObj)
215 {
216 Status = AcpiDsResultPop (&ObjDesc, WalkState);
217 if (ACPI_FAILURE (Status))
218 {
219 ACPI_EXCEPTION ((AE_INFO, Status,
220 "Could not get result from predicate evaluation"));
221
222 return_ACPI_STATUS (Status);
223 }
224 }
225 else
226 {
227 Status = AcpiDsCreateOperand (WalkState, WalkState->Op, 0);
228 if (ACPI_FAILURE (Status))
229 {
230 return_ACPI_STATUS (Status);
231 }
232
233 Status = AcpiExResolveToValue (&WalkState->Operands [0], WalkState);
234 if (ACPI_FAILURE (Status))
235 {
236 return_ACPI_STATUS (Status);
237 }
238
239 ObjDesc = WalkState->Operands [0];
240 }
241
242 if (!ObjDesc)
243 {
244 ACPI_ERROR ((AE_INFO,
245 "No predicate ObjDesc=%p State=%p",
246 ObjDesc, WalkState));
247
248 return_ACPI_STATUS (AE_AML_NO_OPERAND);
249 }
250
251 /*
252 * Result of predicate evaluation must be an Integer
253 * object. Implicitly convert the argument if necessary.
254 */
255 Status = AcpiExConvertToInteger (ObjDesc, &LocalObjDesc,
256 ACPI_IMPLICIT_CONVERSION);
257 if (ACPI_FAILURE (Status))
258 {
259 goto Cleanup;
260 }
261
262 if (LocalObjDesc->Common.Type != ACPI_TYPE_INTEGER)
263 {
264 ACPI_ERROR ((AE_INFO,
265 "Bad predicate (not an integer) ObjDesc=%p State=%p Type=0x%X",
266 ObjDesc, WalkState, ObjDesc->Common.Type));
267
268 Status = AE_AML_OPERAND_TYPE;
269 goto Cleanup;
270 }
271
272 /* Truncate the predicate to 32-bits if necessary */
273
274 (void) AcpiExTruncateFor32bitTable (LocalObjDesc);
275
276 /*
277 * Save the result of the predicate evaluation on
278 * the control stack
279 */
280 if (LocalObjDesc->Integer.Value)
281 {
282 WalkState->ControlState->Common.Value = TRUE;
283 }
284 else
285 {
286 /*
287 * Predicate is FALSE, we will just toss the
288 * rest of the package
289 */
290 WalkState->ControlState->Common.Value = FALSE;
291 Status = AE_CTRL_FALSE;
292 }
293
294 /* Predicate can be used for an implicit return value */
295
296 (void) AcpiDsDoImplicitReturn (LocalObjDesc, WalkState, TRUE);
297
298
299 Cleanup:
300
301 ACPI_DEBUG_PRINT ((ACPI_DB_EXEC,
302 "Completed a predicate eval=%X Op=%p\n",
303 WalkState->ControlState->Common.Value, WalkState->Op));
304
305 /* Break to debugger to display result */
306
307 AcpiDbDisplayResultObject (LocalObjDesc, WalkState);
308
309 /*
310 * Delete the predicate result object (we know that
311 * we don't need it anymore)
312 */
313 if (LocalObjDesc != ObjDesc)
314 {
315 AcpiUtRemoveReference (LocalObjDesc);
316 }
317 AcpiUtRemoveReference (ObjDesc);
318
319 WalkState->ControlState->Common.State = ACPI_CONTROL_NORMAL;
320 return_ACPI_STATUS (Status);
321 }
322
323
324 /*****************************************************************************
325 *
326 * FUNCTION: AcpiDsExecBeginOp
327 *
328 * PARAMETERS: WalkState - Current state of the parse tree walk
329 * OutOp - Where to return op if a new one is created
330 *
331 * RETURN: Status
332 *
333 * DESCRIPTION: Descending callback used during the execution of control
334 * methods. This is where most operators and operands are
335 * dispatched to the interpreter.
336 *
337 ****************************************************************************/
338
339 ACPI_STATUS
AcpiDsExecBeginOp(ACPI_WALK_STATE * WalkState,ACPI_PARSE_OBJECT ** OutOp)340 AcpiDsExecBeginOp (
341 ACPI_WALK_STATE *WalkState,
342 ACPI_PARSE_OBJECT **OutOp)
343 {
344 ACPI_PARSE_OBJECT *Op;
345 ACPI_STATUS Status = AE_OK;
346 UINT32 OpcodeClass;
347
348
349 ACPI_FUNCTION_TRACE_PTR (DsExecBeginOp, WalkState);
350
351
352 Op = WalkState->Op;
353 if (!Op)
354 {
355 Status = AcpiDsLoad2BeginOp (WalkState, OutOp);
356 if (ACPI_FAILURE (Status))
357 {
358 goto ErrorExit;
359 }
360
361 Op = *OutOp;
362 WalkState->Op = Op;
363 WalkState->Opcode = Op->Common.AmlOpcode;
364 WalkState->OpInfo = AcpiPsGetOpcodeInfo (Op->Common.AmlOpcode);
365
366 if (AcpiNsOpensScope (WalkState->OpInfo->ObjectType))
367 {
368 ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH,
369 "(%s) Popping scope for Op %p\n",
370 AcpiUtGetTypeName (WalkState->OpInfo->ObjectType), Op));
371
372 Status = AcpiDsScopeStackPop (WalkState);
373 if (ACPI_FAILURE (Status))
374 {
375 goto ErrorExit;
376 }
377 }
378 }
379
380 if (Op == WalkState->Origin)
381 {
382 if (OutOp)
383 {
384 *OutOp = Op;
385 }
386
387 return_ACPI_STATUS (AE_OK);
388 }
389
390 /*
391 * If the previous opcode was a conditional, this opcode
392 * must be the beginning of the associated predicate.
393 * Save this knowledge in the current scope descriptor
394 */
395 if ((WalkState->ControlState) &&
396 (WalkState->ControlState->Common.State ==
397 ACPI_CONTROL_CONDITIONAL_EXECUTING))
398 {
399 ACPI_DEBUG_PRINT ((ACPI_DB_EXEC,
400 "Exec predicate Op=%p State=%p\n",
401 Op, WalkState));
402
403 WalkState->ControlState->Common.State =
404 ACPI_CONTROL_PREDICATE_EXECUTING;
405
406 /* Save start of predicate */
407
408 WalkState->ControlState->Control.PredicateOp = Op;
409 }
410
411
412 OpcodeClass = WalkState->OpInfo->Class;
413
414 /* We want to send namepaths to the load code */
415
416 if (Op->Common.AmlOpcode == AML_INT_NAMEPATH_OP)
417 {
418 OpcodeClass = AML_CLASS_NAMED_OBJECT;
419 }
420
421 /*
422 * Handle the opcode based upon the opcode type
423 */
424 switch (OpcodeClass)
425 {
426 case AML_CLASS_CONTROL:
427
428 Status = AcpiDsExecBeginControlOp (WalkState, Op);
429 break;
430
431 case AML_CLASS_NAMED_OBJECT:
432
433 if (WalkState->WalkType & ACPI_WALK_METHOD)
434 {
435 /*
436 * Found a named object declaration during method execution;
437 * we must enter this object into the namespace. The created
438 * object is temporary and will be deleted upon completion of
439 * the execution of this method.
440 *
441 * Note 10/2010: Except for the Scope() op. This opcode does
442 * not actually create a new object, it refers to an existing
443 * object. However, for Scope(), we want to indeed open a
444 * new scope.
445 */
446 if (Op->Common.AmlOpcode != AML_SCOPE_OP)
447 {
448 Status = AcpiDsLoad2BeginOp (WalkState, NULL);
449 }
450 else
451 {
452 Status = AcpiDsScopeStackPush (
453 Op->Named.Node, Op->Named.Node->Type, WalkState);
454 if (ACPI_FAILURE (Status))
455 {
456 return_ACPI_STATUS (Status);
457 }
458 }
459 }
460 break;
461
462 case AML_CLASS_EXECUTE:
463 case AML_CLASS_CREATE:
464
465 break;
466
467 default:
468
469 break;
470 }
471
472 /* Nothing to do here during method execution */
473
474 return_ACPI_STATUS (Status);
475
476
477 ErrorExit:
478 Status = AcpiDsMethodError (Status, WalkState);
479 return_ACPI_STATUS (Status);
480 }
481
482
483 /*****************************************************************************
484 *
485 * FUNCTION: AcpiDsExecEndOp
486 *
487 * PARAMETERS: WalkState - Current state of the parse tree walk
488 *
489 * RETURN: Status
490 *
491 * DESCRIPTION: Ascending callback used during the execution of control
492 * methods. The only thing we really need to do here is to
493 * notice the beginning of IF, ELSE, and WHILE blocks.
494 *
495 ****************************************************************************/
496
497 ACPI_STATUS
AcpiDsExecEndOp(ACPI_WALK_STATE * WalkState)498 AcpiDsExecEndOp (
499 ACPI_WALK_STATE *WalkState)
500 {
501 ACPI_PARSE_OBJECT *Op;
502 ACPI_STATUS Status = AE_OK;
503 UINT32 OpType;
504 UINT32 OpClass;
505 ACPI_PARSE_OBJECT *NextOp;
506 ACPI_PARSE_OBJECT *FirstArg;
507
508
509 ACPI_FUNCTION_TRACE_PTR (DsExecEndOp, WalkState);
510
511
512 Op = WalkState->Op;
513 OpType = WalkState->OpInfo->Type;
514 OpClass = WalkState->OpInfo->Class;
515
516 if (OpClass == AML_CLASS_UNKNOWN)
517 {
518 ACPI_ERROR ((AE_INFO, "Unknown opcode 0x%X", Op->Common.AmlOpcode));
519 return_ACPI_STATUS (AE_NOT_IMPLEMENTED);
520 }
521
522 FirstArg = Op->Common.Value.Arg;
523
524 /* Init the walk state */
525
526 WalkState->NumOperands = 0;
527 WalkState->OperandIndex = 0;
528 WalkState->ReturnDesc = NULL;
529 WalkState->ResultObj = NULL;
530
531 /* Call debugger for single step support (DEBUG build only) */
532
533 Status = AcpiDbSingleStep (WalkState, Op, OpClass);
534 if (ACPI_FAILURE (Status))
535 {
536 return_ACPI_STATUS (Status);
537 }
538
539 /* Decode the Opcode Class */
540
541 switch (OpClass)
542 {
543 case AML_CLASS_ARGUMENT: /* Constants, literals, etc. */
544
545 if (WalkState->Opcode == AML_INT_NAMEPATH_OP)
546 {
547 Status = AcpiDsEvaluateNamePath (WalkState);
548 if (ACPI_FAILURE (Status))
549 {
550 goto Cleanup;
551 }
552 }
553 break;
554
555 case AML_CLASS_EXECUTE: /* Most operators with arguments */
556
557 /* Build resolved operand stack */
558
559 Status = AcpiDsCreateOperands (WalkState, FirstArg);
560 if (ACPI_FAILURE (Status))
561 {
562 goto Cleanup;
563 }
564
565 /*
566 * All opcodes require operand resolution, with the only exceptions
567 * being the ObjectType and SizeOf operators.
568 */
569 if (!(WalkState->OpInfo->Flags & AML_NO_OPERAND_RESOLVE))
570 {
571 /* Resolve all operands */
572
573 Status = AcpiExResolveOperands (WalkState->Opcode,
574 &(WalkState->Operands [WalkState->NumOperands -1]),
575 WalkState);
576 }
577
578 if (ACPI_SUCCESS (Status))
579 {
580 /*
581 * Dispatch the request to the appropriate interpreter handler
582 * routine. There is one routine per opcode "type" based upon the
583 * number of opcode arguments and return type.
584 */
585 Status = AcpiGbl_OpTypeDispatch[OpType] (WalkState);
586 }
587 else
588 {
589 /*
590 * Treat constructs of the form "Store(LocalX,LocalX)" as noops when the
591 * Local is uninitialized.
592 */
593 if ((Status == AE_AML_UNINITIALIZED_LOCAL) &&
594 (WalkState->Opcode == AML_STORE_OP) &&
595 (WalkState->Operands[0]->Common.Type == ACPI_TYPE_LOCAL_REFERENCE) &&
596 (WalkState->Operands[1]->Common.Type == ACPI_TYPE_LOCAL_REFERENCE) &&
597 (WalkState->Operands[0]->Reference.Class ==
598 WalkState->Operands[1]->Reference.Class) &&
599 (WalkState->Operands[0]->Reference.Value ==
600 WalkState->Operands[1]->Reference.Value))
601 {
602 Status = AE_OK;
603 }
604 else
605 {
606 ACPI_EXCEPTION ((AE_INFO, Status,
607 "While resolving operands for [%s]",
608 AcpiPsGetOpcodeName (WalkState->Opcode)));
609 }
610 }
611
612 /* Always delete the argument objects and clear the operand stack */
613
614 AcpiDsClearOperands (WalkState);
615
616 /*
617 * If a result object was returned from above, push it on the
618 * current result stack
619 */
620 if (ACPI_SUCCESS (Status) &&
621 WalkState->ResultObj)
622 {
623 Status = AcpiDsResultPush (WalkState->ResultObj, WalkState);
624 }
625 break;
626
627 default:
628
629 switch (OpType)
630 {
631 case AML_TYPE_CONTROL: /* Type 1 opcode, IF/ELSE/WHILE/NOOP */
632
633 /* 1 Operand, 0 ExternalResult, 0 InternalResult */
634
635 Status = AcpiDsExecEndControlOp (WalkState, Op);
636
637 break;
638
639 case AML_TYPE_METHOD_CALL:
640 /*
641 * If the method is referenced from within a package
642 * declaration, it is not a invocation of the method, just
643 * a reference to it.
644 */
645 if ((Op->Asl.Parent) &&
646 ((Op->Asl.Parent->Asl.AmlOpcode == AML_PACKAGE_OP) ||
647 (Op->Asl.Parent->Asl.AmlOpcode == AML_VARIABLE_PACKAGE_OP)))
648 {
649 ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH,
650 "Method Reference in a Package, Op=%p\n", Op));
651
652 Op->Common.Node = (ACPI_NAMESPACE_NODE *)
653 Op->Asl.Value.Arg->Asl.Node;
654 AcpiUtAddReference (Op->Asl.Value.Arg->Asl.Node->Object);
655 return_ACPI_STATUS (AE_OK);
656 }
657
658 ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH,
659 "Method invocation, Op=%p\n", Op));
660
661 /*
662 * (AML_METHODCALL) Op->Asl.Value.Arg->Asl.Node contains
663 * the method Node pointer
664 */
665 /* NextOp points to the op that holds the method name */
666
667 NextOp = FirstArg;
668
669 /* NextOp points to first argument op */
670
671 NextOp = NextOp->Common.Next;
672
673 /*
674 * Get the method's arguments and put them on the operand stack
675 */
676 Status = AcpiDsCreateOperands (WalkState, NextOp);
677 if (ACPI_FAILURE (Status))
678 {
679 break;
680 }
681
682 /*
683 * Since the operands will be passed to another control method,
684 * we must resolve all local references here (Local variables,
685 * arguments to *this* method, etc.)
686 */
687 Status = AcpiDsResolveOperands (WalkState);
688 if (ACPI_FAILURE (Status))
689 {
690 /* On error, clear all resolved operands */
691
692 AcpiDsClearOperands (WalkState);
693 break;
694 }
695
696 /*
697 * Tell the walk loop to preempt this running method and
698 * execute the new method
699 */
700 Status = AE_CTRL_TRANSFER;
701
702 /*
703 * Return now; we don't want to disturb anything,
704 * especially the operand count!
705 */
706 return_ACPI_STATUS (Status);
707
708 case AML_TYPE_CREATE_FIELD:
709
710 ACPI_DEBUG_PRINT ((ACPI_DB_EXEC,
711 "Executing CreateField Buffer/Index Op=%p\n", Op));
712
713 Status = AcpiDsLoad2EndOp (WalkState);
714 if (ACPI_FAILURE (Status))
715 {
716 break;
717 }
718
719 Status = AcpiDsEvalBufferFieldOperands (WalkState, Op);
720 break;
721
722
723 case AML_TYPE_CREATE_OBJECT:
724
725 ACPI_DEBUG_PRINT ((ACPI_DB_EXEC,
726 "Executing CreateObject (Buffer/Package) Op=%p Child=%p ParentOpcode=%4.4X\n",
727 Op, Op->Named.Value.Arg, Op->Common.Parent->Common.AmlOpcode));
728
729 switch (Op->Common.Parent->Common.AmlOpcode)
730 {
731 case AML_NAME_OP:
732 /*
733 * Put the Node on the object stack (Contains the ACPI Name
734 * of this object)
735 */
736 WalkState->Operands[0] = (void *)
737 Op->Common.Parent->Common.Node;
738 WalkState->NumOperands = 1;
739
740 Status = AcpiDsCreateNode (WalkState,
741 Op->Common.Parent->Common.Node, Op->Common.Parent);
742 if (ACPI_FAILURE (Status))
743 {
744 break;
745 }
746
747 /* Fall through */
748 /*lint -fallthrough */
749
750 case AML_INT_EVAL_SUBTREE_OP:
751
752 Status = AcpiDsEvalDataObjectOperands (WalkState, Op,
753 AcpiNsGetAttachedObject (Op->Common.Parent->Common.Node));
754 break;
755
756 default:
757
758 Status = AcpiDsEvalDataObjectOperands (WalkState, Op, NULL);
759 break;
760 }
761
762 /*
763 * If a result object was returned from above, push it on the
764 * current result stack
765 */
766 if (WalkState->ResultObj)
767 {
768 Status = AcpiDsResultPush (WalkState->ResultObj, WalkState);
769 }
770 break;
771
772 case AML_TYPE_NAMED_FIELD:
773 case AML_TYPE_NAMED_COMPLEX:
774 case AML_TYPE_NAMED_SIMPLE:
775 case AML_TYPE_NAMED_NO_OBJ:
776
777 Status = AcpiDsLoad2EndOp (WalkState);
778 if (ACPI_FAILURE (Status))
779 {
780 break;
781 }
782
783 if (Op->Common.AmlOpcode == AML_REGION_OP)
784 {
785 ACPI_DEBUG_PRINT ((ACPI_DB_EXEC,
786 "Executing OpRegion Address/Length Op=%p\n", Op));
787
788 Status = AcpiDsEvalRegionOperands (WalkState, Op);
789 if (ACPI_FAILURE (Status))
790 {
791 break;
792 }
793 }
794 else if (Op->Common.AmlOpcode == AML_DATA_REGION_OP)
795 {
796 ACPI_DEBUG_PRINT ((ACPI_DB_EXEC,
797 "Executing DataTableRegion Strings Op=%p\n", Op));
798
799 Status = AcpiDsEvalTableRegionOperands (WalkState, Op);
800 if (ACPI_FAILURE (Status))
801 {
802 break;
803 }
804 }
805 else if (Op->Common.AmlOpcode == AML_BANK_FIELD_OP)
806 {
807 ACPI_DEBUG_PRINT ((ACPI_DB_EXEC,
808 "Executing BankField Op=%p\n", Op));
809
810 Status = AcpiDsEvalBankFieldOperands (WalkState, Op);
811 if (ACPI_FAILURE (Status))
812 {
813 break;
814 }
815 }
816 break;
817
818 case AML_TYPE_UNDEFINED:
819
820 ACPI_ERROR ((AE_INFO,
821 "Undefined opcode type Op=%p", Op));
822 return_ACPI_STATUS (AE_NOT_IMPLEMENTED);
823
824 case AML_TYPE_BOGUS:
825
826 ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH,
827 "Internal opcode=%X type Op=%p\n",
828 WalkState->Opcode, Op));
829 break;
830
831 default:
832
833 ACPI_ERROR ((AE_INFO,
834 "Unimplemented opcode, class=0x%X "
835 "type=0x%X Opcode=0x%X Op=%p",
836 OpClass, OpType, Op->Common.AmlOpcode, Op));
837
838 Status = AE_NOT_IMPLEMENTED;
839 break;
840 }
841 }
842
843 /*
844 * ACPI 2.0 support for 64-bit integers: Truncate numeric
845 * result value if we are executing from a 32-bit ACPI table
846 */
847 (void) AcpiExTruncateFor32bitTable (WalkState->ResultObj);
848
849 /*
850 * Check if we just completed the evaluation of a
851 * conditional predicate
852 */
853 if ((ACPI_SUCCESS (Status)) &&
854 (WalkState->ControlState) &&
855 (WalkState->ControlState->Common.State ==
856 ACPI_CONTROL_PREDICATE_EXECUTING) &&
857 (WalkState->ControlState->Control.PredicateOp == Op))
858 {
859 Status = AcpiDsGetPredicateValue (WalkState, WalkState->ResultObj);
860 WalkState->ResultObj = NULL;
861 }
862
863
864 Cleanup:
865
866 if (WalkState->ResultObj)
867 {
868 /* Break to debugger to display result */
869
870 AcpiDbDisplayResultObject (WalkState->ResultObj,WalkState);
871
872 /*
873 * Delete the result op if and only if:
874 * Parent will not use the result -- such as any
875 * non-nested type2 op in a method (parent will be method)
876 */
877 AcpiDsDeleteResultIfNotUsed (Op, WalkState->ResultObj, WalkState);
878 }
879
880 #ifdef _UNDER_DEVELOPMENT
881
882 if (WalkState->ParserState.Aml == WalkState->ParserState.AmlEnd)
883 {
884 AcpiDbMethodEnd (WalkState);
885 }
886 #endif
887
888 /* Invoke exception handler on error */
889
890 if (ACPI_FAILURE (Status))
891 {
892 Status = AcpiDsMethodError (Status, WalkState);
893 }
894
895 /* Always clear the object stack */
896
897 WalkState->NumOperands = 0;
898 return_ACPI_STATUS (Status);
899 }
900