1/******************************************************************************
2 *
3 * Module Name: dswexec - Dispatcher method execution callbacks;
4 * dispatch to interpreter.
5 * $Revision: 1.120 $
6 *
7 *****************************************************************************/
8
9/******************************************************************************
10 *
11 * 1. Copyright Notice
12 *
13 * Some or all of this work - Copyright (c) 1999 - 2005, Intel Corp.
14 * All rights reserved.
15 *
16 * 2. License
17 *
18 * 2.1. This is your license from Intel Corp. under its intellectual property
19 * rights. You may have additional license terms from the party that provided
20 * you this software, covering your right to use that party's intellectual
21 * property rights.
22 *
23 * 2.2. Intel grants, free of charge, to any person ("Licensee") obtaining a
24 * copy of the source code appearing in this file ("Covered Code") an
25 * irrevocable, perpetual, worldwide license under Intel's copyrights in the
26 * base code distributed originally by Intel ("Original Intel Code") to copy,
27 * make derivatives, distribute, use and display any portion of the Covered
28 * Code in any form, with the right to sublicense such rights; and
29 *
30 * 2.3. Intel grants Licensee a non-exclusive and non-transferable patent
31 * license (with the right to sublicense), under only those claims of Intel
32 * patents that are infringed by the Original Intel Code, to make, use, sell,
33 * offer to sell, and import the Covered Code and derivative works thereof
34 * solely to the minimum extent necessary to exercise the above copyright
35 * license, and in no event shall the patent license extend to any additions
36 * to or modifications of the Original Intel Code. No other license or right
37 * is granted directly or by implication, estoppel or otherwise;
38 *
39 * The above copyright and patent license is granted only if the following
40 * conditions are met:
41 *
42 * 3. Conditions
43 *
44 * 3.1. Redistribution of Source with Rights to Further Distribute Source.
45 * Redistribution of source code of any substantial portion of the Covered
46 * Code or modification with rights to further distribute source must include
47 * the above Copyright Notice, the above License, this list of Conditions,
48 * and the following Disclaimer and Export Compliance provision. In addition,
49 * Licensee must cause all Covered Code to which Licensee contributes to
50 * contain a file documenting the changes Licensee made to create that Covered
51 * Code and the date of any change. Licensee must include in that file the
52 * documentation of any changes made by any predecessor Licensee. Licensee
53 * must include a prominent statement that the modification is derived,
54 * directly or indirectly, from Original Intel Code.
55 *
56 * 3.2. Redistribution of Source with no Rights to Further Distribute Source.
57 * Redistribution of source code of any substantial portion of the Covered
58 * Code or modification without rights to further distribute source must
59 * include the following Disclaimer and Export Compliance provision in the
60 * documentation and/or other materials provided with distribution. In
61 * addition, Licensee may not authorize further sublicense of source of any
62 * portion of the Covered Code, and must include terms to the effect that the
63 * license from Licensee to its licensee is limited to the intellectual
64 * property embodied in the software Licensee provides to its licensee, and
65 * not to intellectual property embodied in modifications its licensee may
66 * make.
67 *
68 * 3.3. Redistribution of Executable. Redistribution in executable form of any
69 * substantial portion of the Covered Code or modification must reproduce the
70 * above Copyright Notice, and the following Disclaimer and Export Compliance
71 * provision in the documentation and/or other materials provided with the
72 * distribution.
73 *
74 * 3.4. Intel retains all right, title, and interest in and to the Original
75 * Intel Code.
76 *
77 * 3.5. Neither the name Intel nor any other trademark owned or controlled by
78 * Intel shall be used in advertising or otherwise to promote the sale, use or
79 * other dealings in products derived from or relating to the Covered Code
80 * without prior written authorization from Intel.
81 *
82 * 4. Disclaimer and Export Compliance
83 *
84 * 4.1. INTEL MAKES NO WARRANTY OF ANY KIND REGARDING ANY SOFTWARE PROVIDED
85 * HERE. ANY SOFTWARE ORIGINATING FROM INTEL OR DERIVED FROM INTEL SOFTWARE
86 * IS PROVIDED "AS IS," AND INTEL WILL NOT PROVIDE ANY SUPPORT, ASSISTANCE,
87 * INSTALLATION, TRAINING OR OTHER SERVICES. INTEL WILL NOT PROVIDE ANY
88 * UPDATES, ENHANCEMENTS OR EXTENSIONS. INTEL SPECIFICALLY DISCLAIMS ANY
89 * IMPLIED WARRANTIES OF MERCHANTABILITY, NONINFRINGEMENT AND FITNESS FOR A
90 * PARTICULAR PURPOSE.
91 *
92 * 4.2. IN NO EVENT SHALL INTEL HAVE ANY LIABILITY TO LICENSEE, ITS LICENSEES
93 * OR ANY OTHER THIRD PARTY, FOR ANY LOST PROFITS, LOST DATA, LOSS OF USE OR
94 * COSTS OF PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES, OR FOR ANY INDIRECT,
95 * SPECIAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THIS AGREEMENT, UNDER ANY
96 * CAUSE OF ACTION OR THEORY OF LIABILITY, AND IRRESPECTIVE OF WHETHER INTEL
97 * HAS ADVANCE NOTICE OF THE POSSIBILITY OF SUCH DAMAGES. THESE LIMITATIONS
98 * SHALL APPLY NOTWITHSTANDING THE FAILURE OF THE ESSENTIAL PURPOSE OF ANY
99 * LIMITED REMEDY.
100 *
101 * 4.3. Licensee shall not export, either directly or indirectly, any of this
102 * software or system incorporating such software without first obtaining any
103 * required license or other approval from the U. S. Department of Commerce or
104 * any other agency or department of the United States Government. In the
105 * event Licensee exports any such software from the United States or
106 * re-exports any such software from a foreign destination, Licensee shall
107 * ensure that the distribution and export/re-export of the software is in
108 * compliance with all laws, regulations, orders, or other restrictions of the
109 * U.S. Export Administration Regulations. Licensee agrees that neither it nor
110 * any of its subsidiaries will export/re-export any technical data, process,
111 * software, or service, directly or indirectly, to any country for which the
112 * United States government or any agency thereof requires an export license,
113 * other governmental approval, or letter of assurance, without first obtaining
114 * such license, approval or letter.
115 *
116 *****************************************************************************/
117
118#define __DSWEXEC_C__
119
120#include <contrib/dev/acpica/acpi.h>
121#include <contrib/dev/acpica/acparser.h>
122#include <contrib/dev/acpica/amlcode.h>
123#include <contrib/dev/acpica/acdispat.h>
124#include <contrib/dev/acpica/acinterp.h>
125#include <contrib/dev/acpica/acnamesp.h>
126#include <contrib/dev/acpica/acdebug.h>
127#include <contrib/dev/acpica/acdisasm.h>
128
129
130#define _COMPONENT ACPI_DISPATCHER
131 ACPI_MODULE_NAME ("dswexec")
132
133/*
134 * Dispatch table for opcode classes
135 */
136static ACPI_EXECUTE_OP AcpiGbl_OpTypeDispatch [] = {
137 AcpiExOpcode_0A_0T_1R,
138 AcpiExOpcode_1A_0T_0R,
139 AcpiExOpcode_1A_0T_1R,
140 AcpiExOpcode_1A_1T_0R,
141 AcpiExOpcode_1A_1T_1R,
142 AcpiExOpcode_2A_0T_0R,
143 AcpiExOpcode_2A_0T_1R,
144 AcpiExOpcode_2A_1T_1R,
145 AcpiExOpcode_2A_2T_1R,
146 AcpiExOpcode_3A_0T_0R,
147 AcpiExOpcode_3A_1T_1R,
148 AcpiExOpcode_6A_0T_1R};
149
150
151/*****************************************************************************
152 *
153 * FUNCTION: AcpiDsGetPredicateValue
154 *
155 * PARAMETERS: WalkState - Current state of the parse tree walk
156 * ResultObj - if non-zero, pop result from result stack
157 *
158 * RETURN: Status
159 *
160 * DESCRIPTION: Get the result of a predicate evaluation
161 *
162 ****************************************************************************/
163
164ACPI_STATUS
165AcpiDsGetPredicateValue (
166 ACPI_WALK_STATE *WalkState,
167 ACPI_OPERAND_OBJECT *ResultObj)
168{
169 ACPI_STATUS Status = AE_OK;
170 ACPI_OPERAND_OBJECT *ObjDesc;
171 ACPI_OPERAND_OBJECT *LocalObjDesc = NULL;
172
173
174 ACPI_FUNCTION_TRACE_PTR ("DsGetPredicateValue", WalkState);
175
176
177 WalkState->ControlState->Common.State = 0;
178
179 if (ResultObj)
180 {
181 Status = AcpiDsResultPop (&ObjDesc, WalkState);
182 if (ACPI_FAILURE (Status))
183 {
184 ACPI_DEBUG_PRINT ((ACPI_DB_ERROR,
185 "Could not get result from predicate evaluation, %s\n",
186 AcpiFormatException (Status)));
187
188 return_ACPI_STATUS (Status);
189 }
190 }
191 else
192 {
193 Status = AcpiDsCreateOperand (WalkState, WalkState->Op, 0);
194 if (ACPI_FAILURE (Status))
195 {
196 return_ACPI_STATUS (Status);
197 }
198
199 Status = AcpiExResolveToValue (&WalkState->Operands [0], WalkState);
200 if (ACPI_FAILURE (Status))
201 {
202 return_ACPI_STATUS (Status);
203 }
204
205 ObjDesc = WalkState->Operands [0];
206 }
207
208 if (!ObjDesc)
209 {
210 ACPI_DEBUG_PRINT ((ACPI_DB_ERROR,
211 "No predicate ObjDesc=%p State=%p\n",
212 ObjDesc, WalkState));
213
214 return_ACPI_STATUS (AE_AML_NO_OPERAND);
215 }
216
217 /*
218 * Result of predicate evaluation must be an Integer
219 * object. Implicitly convert the argument if necessary.
220 */
221 Status = AcpiExConvertToInteger (ObjDesc, &LocalObjDesc, 16);
222 if (ACPI_FAILURE (Status))
223 {
224 goto Cleanup;
225 }
226
227 if (ACPI_GET_OBJECT_TYPE (LocalObjDesc) != ACPI_TYPE_INTEGER)
228 {
229 ACPI_DEBUG_PRINT ((ACPI_DB_ERROR,
230 "Bad predicate (not an integer) ObjDesc=%p State=%p Type=%X\n",
231 ObjDesc, WalkState, ACPI_GET_OBJECT_TYPE (ObjDesc)));
232
233 Status = AE_AML_OPERAND_TYPE;
234 goto Cleanup;
235 }
236
237 /* Truncate the predicate to 32-bits if necessary */
238
239 AcpiExTruncateFor32bitTable (LocalObjDesc);
240
241 /*
242 * Save the result of the predicate evaluation on
243 * the control stack
244 */
245 if (LocalObjDesc->Integer.Value)
246 {
247 WalkState->ControlState->Common.Value = TRUE;
248 }
249 else
250 {
251 /*
252 * Predicate is FALSE, we will just toss the
253 * rest of the package
254 */
255 WalkState->ControlState->Common.Value = FALSE;
256 Status = AE_CTRL_FALSE;
257 }
258
259
260Cleanup:
261
262 ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "Completed a predicate eval=%X Op=%p\n",
263 WalkState->ControlState->Common.Value, WalkState->Op));
264
265 /* Break to debugger to display result */
266
267 ACPI_DEBUGGER_EXEC (AcpiDbDisplayResultObject (LocalObjDesc, WalkState));
268
269 /*
270 * Delete the predicate result object (we know that
271 * we don't need it anymore)
272 */
273 if (LocalObjDesc != ObjDesc)
274 {
275 AcpiUtRemoveReference (LocalObjDesc);
276 }
277 AcpiUtRemoveReference (ObjDesc);
278
279 WalkState->ControlState->Common.State = ACPI_CONTROL_NORMAL;
280 return_ACPI_STATUS (Status);
281}
282
283
284/*****************************************************************************
285 *
286 * FUNCTION: AcpiDsExecBeginOp
287 *
288 * PARAMETERS: WalkState - Current state of the parse tree walk
289 * OutOp - Where to return op if a new one is created
290 *
291 * RETURN: Status
292 *
293 * DESCRIPTION: Descending callback used during the execution of control
294 * methods. This is where most operators and operands are
295 * dispatched to the interpreter.
296 *
297 ****************************************************************************/
298
299ACPI_STATUS
300AcpiDsExecBeginOp (
301 ACPI_WALK_STATE *WalkState,
302 ACPI_PARSE_OBJECT **OutOp)
303{
304 ACPI_PARSE_OBJECT *Op;
305 ACPI_STATUS Status = AE_OK;
306 UINT32 OpcodeClass;
307
308
309 ACPI_FUNCTION_TRACE_PTR ("DsExecBeginOp", WalkState);
310
311
312 Op = WalkState->Op;
313 if (!Op)
314 {
315 Status = AcpiDsLoad2BeginOp (WalkState, OutOp);
316 if (ACPI_FAILURE (Status))
317 {
318 return_ACPI_STATUS (Status);
319 }
320
321 Op = *OutOp;
322 WalkState->Op = Op;
323 WalkState->Opcode = Op->Common.AmlOpcode;
324 WalkState->OpInfo = AcpiPsGetOpcodeInfo (Op->Common.AmlOpcode);
325
326 if (AcpiNsOpensScope (WalkState->OpInfo->ObjectType))
327 {
328 ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH,
329 "(%s) Popping scope for Op %p\n",
330 AcpiUtGetTypeName (WalkState->OpInfo->ObjectType), Op));
331
332 Status = AcpiDsScopeStackPop (WalkState);
333 if (ACPI_FAILURE (Status))
334 {
335 return_ACPI_STATUS (Status);
336 }
337 }
338 }
339
340 if (Op == WalkState->Origin)
341 {
342 if (OutOp)
343 {
344 *OutOp = Op;
345 }
346
347 return_ACPI_STATUS (AE_OK);
348 }
349
350 /*
351 * If the previous opcode was a conditional, this opcode
352 * must be the beginning of the associated predicate.
353 * Save this knowledge in the current scope descriptor
354 */
355 if ((WalkState->ControlState) &&
356 (WalkState->ControlState->Common.State ==
357 ACPI_CONTROL_CONDITIONAL_EXECUTING))
358 {
359 ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "Exec predicate Op=%p State=%p\n",
360 Op, WalkState));
361
362 WalkState->ControlState->Common.State = ACPI_CONTROL_PREDICATE_EXECUTING;
363
364 /* Save start of predicate */
365
366 WalkState->ControlState->Control.PredicateOp = Op;
367 }
368
369
370 OpcodeClass = WalkState->OpInfo->Class;
371
372 /* We want to send namepaths to the load code */
373
374 if (Op->Common.AmlOpcode == AML_INT_NAMEPATH_OP)
375 {
376 OpcodeClass = AML_CLASS_NAMED_OBJECT;
377 }
378
379 /*
380 * Handle the opcode based upon the opcode type
381 */
382 switch (OpcodeClass)
383 {
384 case AML_CLASS_CONTROL:
385
386 Status = AcpiDsResultStackPush (WalkState);
387 if (ACPI_FAILURE (Status))
388 {
389 return_ACPI_STATUS (Status);
390 }
391
392 Status = AcpiDsExecBeginControlOp (WalkState, Op);
393 break;
394
395
396 case AML_CLASS_NAMED_OBJECT:
397
398 if (WalkState->WalkType == ACPI_WALK_METHOD)
399 {
400 /*
401 * Found a named object declaration during method execution;
402 * we must enter this object into the namespace. The created
403 * object is temporary and will be deleted upon completion of
404 * the execution of this method.
405 */
406 Status = AcpiDsLoad2BeginOp (WalkState, NULL);
407 }
408
409 if (Op->Common.AmlOpcode == AML_REGION_OP)
410 {
411 Status = AcpiDsResultStackPush (WalkState);
412 }
413 break;
414
415
416 case AML_CLASS_EXECUTE:
417 case AML_CLASS_CREATE:
418
419 /*
420 * Most operators with arguments.
421 * Start a new result/operand state
422 */
423 Status = AcpiDsResultStackPush (WalkState);
424 break;
425
426
427 default:
428 break;
429 }
430
431 /* Nothing to do here during method execution */
432
433 return_ACPI_STATUS (Status);
434}
435
436
437/*****************************************************************************
438 *
439 * FUNCTION: AcpiDsExecEndOp
440 *
441 * PARAMETERS: WalkState - Current state of the parse tree walk
442 *
443 * RETURN: Status
444 *
445 * DESCRIPTION: Ascending callback used during the execution of control
446 * methods. The only thing we really need to do here is to
447 * notice the beginning of IF, ELSE, and WHILE blocks.
448 *
449 ****************************************************************************/
450
451ACPI_STATUS
452AcpiDsExecEndOp (
453 ACPI_WALK_STATE *WalkState)
454{
455 ACPI_PARSE_OBJECT *Op;
456 ACPI_STATUS Status = AE_OK;
457 UINT32 OpType;
458 UINT32 OpClass;
459 ACPI_PARSE_OBJECT *NextOp;
460 ACPI_PARSE_OBJECT *FirstArg;
461
462
463 ACPI_FUNCTION_TRACE_PTR ("DsExecEndOp", WalkState);
464
465
466 Op = WalkState->Op;
467 OpType = WalkState->OpInfo->Type;
468 OpClass = WalkState->OpInfo->Class;
469
470 if (OpClass == AML_CLASS_UNKNOWN)
471 {
472 ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "Unknown opcode %X\n", Op->Common.AmlOpcode));
473 return_ACPI_STATUS (AE_NOT_IMPLEMENTED);
474 }
475
476 FirstArg = Op->Common.Value.Arg;
477
478 /* Init the walk state */
479
480 WalkState->NumOperands = 0;
481 WalkState->ReturnDesc = NULL;
482 WalkState->ResultObj = NULL;
483
484 /* Call debugger for single step support (DEBUG build only) */
485
486 ACPI_DEBUGGER_EXEC (Status = AcpiDbSingleStep (WalkState, Op, OpClass));
487 ACPI_DEBUGGER_EXEC (if (ACPI_FAILURE (Status)) {return_ACPI_STATUS (Status);});
488
489 /* Decode the Opcode Class */
490
491 switch (OpClass)
492 {
493 case AML_CLASS_ARGUMENT: /* constants, literals, etc. - do nothing */
494 break;
495
496
497 case AML_CLASS_EXECUTE: /* most operators with arguments */
498
499 /* Build resolved operand stack */
500
501 Status = AcpiDsCreateOperands (WalkState, FirstArg);
502 if (ACPI_FAILURE (Status))
503 {
504 goto Cleanup;
505 }
506
507 /* Done with this result state (Now that operand stack is built) */
508
509 Status = AcpiDsResultStackPop (WalkState);
510 if (ACPI_FAILURE (Status))
511 {
512 goto Cleanup;
513 }
514
515 /*
516 * All opcodes require operand resolution, with the only exceptions
517 * being the ObjectType and SizeOf operators.
518 */
519 if (!(WalkState->OpInfo->Flags & AML_NO_OPERAND_RESOLVE))
520 {
521 /* Resolve all operands */
522
523 Status = AcpiExResolveOperands (WalkState->Opcode,
524 &(WalkState->Operands [WalkState->NumOperands -1]),
525 WalkState);
526 if (ACPI_SUCCESS (Status))
527 {
528 ACPI_DUMP_OPERANDS (ACPI_WALK_OPERANDS, ACPI_IMODE_EXECUTE,
529 AcpiPsGetOpcodeName (WalkState->Opcode),
530 WalkState->NumOperands, "after ExResolveOperands");
531 }
532 }
533
534 if (ACPI_SUCCESS (Status))
535 {
536 /*
537 * Dispatch the request to the appropriate interpreter handler
538 * routine. There is one routine per opcode "type" based upon the
539 * number of opcode arguments and return type.
540 */
541 Status = AcpiGbl_OpTypeDispatch[OpType] (WalkState);
542 }
543 else
544 {
545 /*
546 * Treat constructs of the form "Store(LocalX,LocalX)" as noops when the
547 * Local is uninitialized.
548 */
549 if ((Status == AE_AML_UNINITIALIZED_LOCAL) &&
550 (WalkState->Opcode == AML_STORE_OP) &&
551 (WalkState->Operands[0]->Common.Type == ACPI_TYPE_LOCAL_REFERENCE) &&
552 (WalkState->Operands[1]->Common.Type == ACPI_TYPE_LOCAL_REFERENCE) &&
553 (WalkState->Operands[0]->Reference.Opcode ==
554 WalkState->Operands[1]->Reference.Opcode) &&
555 (WalkState->Operands[0]->Reference.Offset ==
556 WalkState->Operands[1]->Reference.Offset))
557 {
558 Status = AE_OK;
559 }
560 else
561 {
562 ACPI_DEBUG_PRINT ((ACPI_DB_ERROR,
563 "[%s]: Could not resolve operands, %s\n",
564 AcpiPsGetOpcodeName (WalkState->Opcode),
565 AcpiFormatException (Status)));
566 }
567 }
568
569 /* Always delete the argument objects and clear the operand stack */
570
571 AcpiDsClearOperands (WalkState);
572
573 /*
574 * If a result object was returned from above, push it on the
575 * current result stack
576 */
577 if (ACPI_SUCCESS (Status) &&
578 WalkState->ResultObj)
579 {
580 Status = AcpiDsResultPush (WalkState->ResultObj, WalkState);
581 }
582
583 break;
584
585
586 default:
587
588 switch (OpType)
589 {
590 case AML_TYPE_CONTROL: /* Type 1 opcode, IF/ELSE/WHILE/NOOP */
591
592 /* 1 Operand, 0 ExternalResult, 0 InternalResult */
593
594 Status = AcpiDsExecEndControlOp (WalkState, Op);
595
596 /* Make sure to properly pop the result stack */
597
598 if (ACPI_SUCCESS (Status))
599 {
600 Status = AcpiDsResultStackPop (WalkState);
601 }
602 else if (Status == AE_CTRL_PENDING)
603 {
604 Status = AcpiDsResultStackPop (WalkState);
605 if (ACPI_SUCCESS (Status))
606 {
607 Status = AE_CTRL_PENDING;
608 }
609 }
610 break;
611
612
613 case AML_TYPE_METHOD_CALL:
614
615 /*
616 * If the method is referenced from within a package
617 * declaration, it is not a invocation of the method, just
618 * a reference to it.
619 */
620 if ((Op->Asl.Parent) &&
621 ((Op->Asl.Parent->Asl.AmlOpcode == AML_PACKAGE_OP) ||
622 (Op->Asl.Parent->Asl.AmlOpcode == AML_VAR_PACKAGE_OP)))
623 {
624 ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH,
625 "Method Reference in a Package, Op=%p\n", Op));
626 Op->Common.Node = (ACPI_NAMESPACE_NODE *) Op->Asl.Value.Arg->Asl.Node->Object;
627 AcpiUtAddReference (Op->Asl.Value.Arg->Asl.Node->Object);
628 return_ACPI_STATUS (AE_OK);
629 }
630
631 ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, "Method invocation, Op=%p\n", Op));
632
633 /*
634 * (AML_METHODCALL) Op->Asl.Value.Arg->Asl.Node contains
635 * the method Node pointer
636 */
637 /* NextOp points to the op that holds the method name */
638
639 NextOp = FirstArg;
640
641 /* NextOp points to first argument op */
642
643 NextOp = NextOp->Common.Next;
644
645 /*
646 * Get the method's arguments and put them on the operand stack
647 */
648 Status = AcpiDsCreateOperands (WalkState, NextOp);
649 if (ACPI_FAILURE (Status))
650 {
651 break;
652 }
653
654 /*
655 * Since the operands will be passed to another control method,
656 * we must resolve all local references here (Local variables,
657 * arguments to *this* method, etc.)
658 */
659 Status = AcpiDsResolveOperands (WalkState);
660 if (ACPI_FAILURE (Status))
661 {
662 /* On error, clear all resolved operands */
663
664 AcpiDsClearOperands (WalkState);
665 break;
666 }
667
668 /*
669 * Tell the walk loop to preempt this running method and
670 * execute the new method
671 */
672 Status = AE_CTRL_TRANSFER;
673
674 /*
675 * Return now; we don't want to disturb anything,
676 * especially the operand count!
677 */
678 return_ACPI_STATUS (Status);
679
680
681 case AML_TYPE_CREATE_FIELD:
682
683 ACPI_DEBUG_PRINT ((ACPI_DB_EXEC,
684 "Executing CreateField Buffer/Index Op=%p\n", Op));
685
686 Status = AcpiDsLoad2EndOp (WalkState);
687 if (ACPI_FAILURE (Status))
688 {
689 break;
690 }
691
692 Status = AcpiDsEvalBufferFieldOperands (WalkState, Op);
693 break;
694
695
696 case AML_TYPE_CREATE_OBJECT:
697
698 ACPI_DEBUG_PRINT ((ACPI_DB_EXEC,
699 "Executing CreateObject (Buffer/Package) Op=%p\n", Op));
700
701 switch (Op->Common.Parent->Common.AmlOpcode)
702 {
703 case AML_NAME_OP:
704
705 /*
706 * Put the Node on the object stack (Contains the ACPI Name
707 * of this object)
708 */
709 WalkState->Operands[0] = (void *) Op->Common.Parent->Common.Node;
710 WalkState->NumOperands = 1;
711
712 Status = AcpiDsCreateNode (WalkState,
713 Op->Common.Parent->Common.Node,
714 Op->Common.Parent);
715 if (ACPI_FAILURE (Status))
716 {
717 break;
718 }
719
720 /* Fall through */
721 /*lint -fallthrough */
722
723 case AML_INT_EVAL_SUBTREE_OP:
724
725 Status = AcpiDsEvalDataObjectOperands (WalkState, Op,
726 AcpiNsGetAttachedObject (Op->Common.Parent->Common.Node));
727 break;
728
729 default:
730
731 Status = AcpiDsEvalDataObjectOperands (WalkState, Op, NULL);
732 break;
733 }
734
735 /* Done with result state (Now that operand stack is built) */
736
737 Status = AcpiDsResultStackPop (WalkState);
738 if (ACPI_FAILURE (Status))
739 {
740 goto Cleanup;
741 }
742
743 /*
744 * If a result object was returned from above, push it on the
745 * current result stack
746 */
747 if (WalkState->ResultObj)
748 {
749 Status = AcpiDsResultPush (WalkState->ResultObj, WalkState);
750 }
751 break;
752
753
754 case AML_TYPE_NAMED_FIELD:
755 case AML_TYPE_NAMED_COMPLEX:
756 case AML_TYPE_NAMED_SIMPLE:
757 case AML_TYPE_NAMED_NO_OBJ:
758
759 Status = AcpiDsLoad2EndOp (WalkState);
760 if (ACPI_FAILURE (Status))
761 {
762 break;
763 }
764
765 if (Op->Common.AmlOpcode == AML_REGION_OP)
766 {
767 ACPI_DEBUG_PRINT ((ACPI_DB_EXEC,
768 "Executing OpRegion Address/Length Op=%p\n", Op));
769
770 Status = AcpiDsEvalRegionOperands (WalkState, Op);
771 if (ACPI_FAILURE (Status))
772 {
773 break;
774 }
775
776 Status = AcpiDsResultStackPop (WalkState);
777 }
778
779 break;
780
781
782 case AML_TYPE_UNDEFINED:
783
784 ACPI_DEBUG_PRINT ((ACPI_DB_ERROR,
785 "Undefined opcode type Op=%p\n", Op));
786 return_ACPI_STATUS (AE_NOT_IMPLEMENTED);
787
788
789 case AML_TYPE_BOGUS:
790
791 ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH,
792 "Internal opcode=%X type Op=%p\n",
793 WalkState->Opcode, Op));
794 break;
795
796
797 default:
798
799 ACPI_DEBUG_PRINT ((ACPI_DB_ERROR,
800 "Unimplemented opcode, class=%X type=%X Opcode=%X Op=%p\n",
801 OpClass, OpType, Op->Common.AmlOpcode, Op));
802
803 Status = AE_NOT_IMPLEMENTED;
804 break;
805 }
806 }
807
808 /*
809 * ACPI 2.0 support for 64-bit integers: Truncate numeric
810 * result value if we are executing from a 32-bit ACPI table
811 */
812 AcpiExTruncateFor32bitTable (WalkState->ResultObj);
813
814 /*
815 * Check if we just completed the evaluation of a
816 * conditional predicate
817 */
818
819 if ((ACPI_SUCCESS (Status)) &&
820 (WalkState->ControlState) &&
821 (WalkState->ControlState->Common.State ==
822 ACPI_CONTROL_PREDICATE_EXECUTING) &&
823 (WalkState->ControlState->Control.PredicateOp == Op))
824 {
825 Status = AcpiDsGetPredicateValue (WalkState, WalkState->ResultObj);
826 WalkState->ResultObj = NULL;
827 }
828
829
830Cleanup:
831
832 /* Invoke exception handler on error */
833
834 if (ACPI_FAILURE (Status) &&
835 AcpiGbl_ExceptionHandler &&
836 !(Status & AE_CODE_CONTROL))
837 {
838 AcpiExExitInterpreter ();
839 Status = AcpiGbl_ExceptionHandler (Status,
840 WalkState->MethodNode->Name.Integer, WalkState->Opcode,
841 WalkState->AmlOffset, NULL);
842 (void) AcpiExEnterInterpreter ();
843 }
844
845 if (WalkState->ResultObj)
846 {
847 /* Break to debugger to display result */
848
849 ACPI_DEBUGGER_EXEC (AcpiDbDisplayResultObject (WalkState->ResultObj,
850 WalkState));
851
852 /*
853 * Delete the result op if and only if:
854 * Parent will not use the result -- such as any
855 * non-nested type2 op in a method (parent will be method)
856 */
857 AcpiDsDeleteResultIfNotUsed (Op, WalkState->ResultObj, WalkState);
858 }
859
860#ifdef _UNDER_DEVELOPMENT
861
862 if (WalkState->ParserState.Aml == WalkState->ParserState.AmlEnd)
863 {
864 AcpiDbMethodEnd (WalkState);
865 }
866#endif
867
868 /* Always clear the object stack */
869
870 WalkState->NumOperands = 0;
871
872#ifdef ACPI_DISASSEMBLER
873
874 /* On error, display method locals/args */
875
876 if (ACPI_FAILURE (Status))
877 {
878 AcpiDmDumpMethodInfo (Status, WalkState, Op);
879 }
880#endif
881
882 return_ACPI_STATUS (Status);
883}
884
885
2 *
3 * Module Name: dswexec - Dispatcher method execution callbacks;
4 * dispatch to interpreter.
5 * $Revision: 1.120 $
6 *
7 *****************************************************************************/
8
9/******************************************************************************
10 *
11 * 1. Copyright Notice
12 *
13 * Some or all of this work - Copyright (c) 1999 - 2005, Intel Corp.
14 * All rights reserved.
15 *
16 * 2. License
17 *
18 * 2.1. This is your license from Intel Corp. under its intellectual property
19 * rights. You may have additional license terms from the party that provided
20 * you this software, covering your right to use that party's intellectual
21 * property rights.
22 *
23 * 2.2. Intel grants, free of charge, to any person ("Licensee") obtaining a
24 * copy of the source code appearing in this file ("Covered Code") an
25 * irrevocable, perpetual, worldwide license under Intel's copyrights in the
26 * base code distributed originally by Intel ("Original Intel Code") to copy,
27 * make derivatives, distribute, use and display any portion of the Covered
28 * Code in any form, with the right to sublicense such rights; and
29 *
30 * 2.3. Intel grants Licensee a non-exclusive and non-transferable patent
31 * license (with the right to sublicense), under only those claims of Intel
32 * patents that are infringed by the Original Intel Code, to make, use, sell,
33 * offer to sell, and import the Covered Code and derivative works thereof
34 * solely to the minimum extent necessary to exercise the above copyright
35 * license, and in no event shall the patent license extend to any additions
36 * to or modifications of the Original Intel Code. No other license or right
37 * is granted directly or by implication, estoppel or otherwise;
38 *
39 * The above copyright and patent license is granted only if the following
40 * conditions are met:
41 *
42 * 3. Conditions
43 *
44 * 3.1. Redistribution of Source with Rights to Further Distribute Source.
45 * Redistribution of source code of any substantial portion of the Covered
46 * Code or modification with rights to further distribute source must include
47 * the above Copyright Notice, the above License, this list of Conditions,
48 * and the following Disclaimer and Export Compliance provision. In addition,
49 * Licensee must cause all Covered Code to which Licensee contributes to
50 * contain a file documenting the changes Licensee made to create that Covered
51 * Code and the date of any change. Licensee must include in that file the
52 * documentation of any changes made by any predecessor Licensee. Licensee
53 * must include a prominent statement that the modification is derived,
54 * directly or indirectly, from Original Intel Code.
55 *
56 * 3.2. Redistribution of Source with no Rights to Further Distribute Source.
57 * Redistribution of source code of any substantial portion of the Covered
58 * Code or modification without rights to further distribute source must
59 * include the following Disclaimer and Export Compliance provision in the
60 * documentation and/or other materials provided with distribution. In
61 * addition, Licensee may not authorize further sublicense of source of any
62 * portion of the Covered Code, and must include terms to the effect that the
63 * license from Licensee to its licensee is limited to the intellectual
64 * property embodied in the software Licensee provides to its licensee, and
65 * not to intellectual property embodied in modifications its licensee may
66 * make.
67 *
68 * 3.3. Redistribution of Executable. Redistribution in executable form of any
69 * substantial portion of the Covered Code or modification must reproduce the
70 * above Copyright Notice, and the following Disclaimer and Export Compliance
71 * provision in the documentation and/or other materials provided with the
72 * distribution.
73 *
74 * 3.4. Intel retains all right, title, and interest in and to the Original
75 * Intel Code.
76 *
77 * 3.5. Neither the name Intel nor any other trademark owned or controlled by
78 * Intel shall be used in advertising or otherwise to promote the sale, use or
79 * other dealings in products derived from or relating to the Covered Code
80 * without prior written authorization from Intel.
81 *
82 * 4. Disclaimer and Export Compliance
83 *
84 * 4.1. INTEL MAKES NO WARRANTY OF ANY KIND REGARDING ANY SOFTWARE PROVIDED
85 * HERE. ANY SOFTWARE ORIGINATING FROM INTEL OR DERIVED FROM INTEL SOFTWARE
86 * IS PROVIDED "AS IS," AND INTEL WILL NOT PROVIDE ANY SUPPORT, ASSISTANCE,
87 * INSTALLATION, TRAINING OR OTHER SERVICES. INTEL WILL NOT PROVIDE ANY
88 * UPDATES, ENHANCEMENTS OR EXTENSIONS. INTEL SPECIFICALLY DISCLAIMS ANY
89 * IMPLIED WARRANTIES OF MERCHANTABILITY, NONINFRINGEMENT AND FITNESS FOR A
90 * PARTICULAR PURPOSE.
91 *
92 * 4.2. IN NO EVENT SHALL INTEL HAVE ANY LIABILITY TO LICENSEE, ITS LICENSEES
93 * OR ANY OTHER THIRD PARTY, FOR ANY LOST PROFITS, LOST DATA, LOSS OF USE OR
94 * COSTS OF PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES, OR FOR ANY INDIRECT,
95 * SPECIAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THIS AGREEMENT, UNDER ANY
96 * CAUSE OF ACTION OR THEORY OF LIABILITY, AND IRRESPECTIVE OF WHETHER INTEL
97 * HAS ADVANCE NOTICE OF THE POSSIBILITY OF SUCH DAMAGES. THESE LIMITATIONS
98 * SHALL APPLY NOTWITHSTANDING THE FAILURE OF THE ESSENTIAL PURPOSE OF ANY
99 * LIMITED REMEDY.
100 *
101 * 4.3. Licensee shall not export, either directly or indirectly, any of this
102 * software or system incorporating such software without first obtaining any
103 * required license or other approval from the U. S. Department of Commerce or
104 * any other agency or department of the United States Government. In the
105 * event Licensee exports any such software from the United States or
106 * re-exports any such software from a foreign destination, Licensee shall
107 * ensure that the distribution and export/re-export of the software is in
108 * compliance with all laws, regulations, orders, or other restrictions of the
109 * U.S. Export Administration Regulations. Licensee agrees that neither it nor
110 * any of its subsidiaries will export/re-export any technical data, process,
111 * software, or service, directly or indirectly, to any country for which the
112 * United States government or any agency thereof requires an export license,
113 * other governmental approval, or letter of assurance, without first obtaining
114 * such license, approval or letter.
115 *
116 *****************************************************************************/
117
118#define __DSWEXEC_C__
119
120#include <contrib/dev/acpica/acpi.h>
121#include <contrib/dev/acpica/acparser.h>
122#include <contrib/dev/acpica/amlcode.h>
123#include <contrib/dev/acpica/acdispat.h>
124#include <contrib/dev/acpica/acinterp.h>
125#include <contrib/dev/acpica/acnamesp.h>
126#include <contrib/dev/acpica/acdebug.h>
127#include <contrib/dev/acpica/acdisasm.h>
128
129
130#define _COMPONENT ACPI_DISPATCHER
131 ACPI_MODULE_NAME ("dswexec")
132
133/*
134 * Dispatch table for opcode classes
135 */
136static ACPI_EXECUTE_OP AcpiGbl_OpTypeDispatch [] = {
137 AcpiExOpcode_0A_0T_1R,
138 AcpiExOpcode_1A_0T_0R,
139 AcpiExOpcode_1A_0T_1R,
140 AcpiExOpcode_1A_1T_0R,
141 AcpiExOpcode_1A_1T_1R,
142 AcpiExOpcode_2A_0T_0R,
143 AcpiExOpcode_2A_0T_1R,
144 AcpiExOpcode_2A_1T_1R,
145 AcpiExOpcode_2A_2T_1R,
146 AcpiExOpcode_3A_0T_0R,
147 AcpiExOpcode_3A_1T_1R,
148 AcpiExOpcode_6A_0T_1R};
149
150
151/*****************************************************************************
152 *
153 * FUNCTION: AcpiDsGetPredicateValue
154 *
155 * PARAMETERS: WalkState - Current state of the parse tree walk
156 * ResultObj - if non-zero, pop result from result stack
157 *
158 * RETURN: Status
159 *
160 * DESCRIPTION: Get the result of a predicate evaluation
161 *
162 ****************************************************************************/
163
164ACPI_STATUS
165AcpiDsGetPredicateValue (
166 ACPI_WALK_STATE *WalkState,
167 ACPI_OPERAND_OBJECT *ResultObj)
168{
169 ACPI_STATUS Status = AE_OK;
170 ACPI_OPERAND_OBJECT *ObjDesc;
171 ACPI_OPERAND_OBJECT *LocalObjDesc = NULL;
172
173
174 ACPI_FUNCTION_TRACE_PTR ("DsGetPredicateValue", WalkState);
175
176
177 WalkState->ControlState->Common.State = 0;
178
179 if (ResultObj)
180 {
181 Status = AcpiDsResultPop (&ObjDesc, WalkState);
182 if (ACPI_FAILURE (Status))
183 {
184 ACPI_DEBUG_PRINT ((ACPI_DB_ERROR,
185 "Could not get result from predicate evaluation, %s\n",
186 AcpiFormatException (Status)));
187
188 return_ACPI_STATUS (Status);
189 }
190 }
191 else
192 {
193 Status = AcpiDsCreateOperand (WalkState, WalkState->Op, 0);
194 if (ACPI_FAILURE (Status))
195 {
196 return_ACPI_STATUS (Status);
197 }
198
199 Status = AcpiExResolveToValue (&WalkState->Operands [0], WalkState);
200 if (ACPI_FAILURE (Status))
201 {
202 return_ACPI_STATUS (Status);
203 }
204
205 ObjDesc = WalkState->Operands [0];
206 }
207
208 if (!ObjDesc)
209 {
210 ACPI_DEBUG_PRINT ((ACPI_DB_ERROR,
211 "No predicate ObjDesc=%p State=%p\n",
212 ObjDesc, WalkState));
213
214 return_ACPI_STATUS (AE_AML_NO_OPERAND);
215 }
216
217 /*
218 * Result of predicate evaluation must be an Integer
219 * object. Implicitly convert the argument if necessary.
220 */
221 Status = AcpiExConvertToInteger (ObjDesc, &LocalObjDesc, 16);
222 if (ACPI_FAILURE (Status))
223 {
224 goto Cleanup;
225 }
226
227 if (ACPI_GET_OBJECT_TYPE (LocalObjDesc) != ACPI_TYPE_INTEGER)
228 {
229 ACPI_DEBUG_PRINT ((ACPI_DB_ERROR,
230 "Bad predicate (not an integer) ObjDesc=%p State=%p Type=%X\n",
231 ObjDesc, WalkState, ACPI_GET_OBJECT_TYPE (ObjDesc)));
232
233 Status = AE_AML_OPERAND_TYPE;
234 goto Cleanup;
235 }
236
237 /* Truncate the predicate to 32-bits if necessary */
238
239 AcpiExTruncateFor32bitTable (LocalObjDesc);
240
241 /*
242 * Save the result of the predicate evaluation on
243 * the control stack
244 */
245 if (LocalObjDesc->Integer.Value)
246 {
247 WalkState->ControlState->Common.Value = TRUE;
248 }
249 else
250 {
251 /*
252 * Predicate is FALSE, we will just toss the
253 * rest of the package
254 */
255 WalkState->ControlState->Common.Value = FALSE;
256 Status = AE_CTRL_FALSE;
257 }
258
259
260Cleanup:
261
262 ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "Completed a predicate eval=%X Op=%p\n",
263 WalkState->ControlState->Common.Value, WalkState->Op));
264
265 /* Break to debugger to display result */
266
267 ACPI_DEBUGGER_EXEC (AcpiDbDisplayResultObject (LocalObjDesc, WalkState));
268
269 /*
270 * Delete the predicate result object (we know that
271 * we don't need it anymore)
272 */
273 if (LocalObjDesc != ObjDesc)
274 {
275 AcpiUtRemoveReference (LocalObjDesc);
276 }
277 AcpiUtRemoveReference (ObjDesc);
278
279 WalkState->ControlState->Common.State = ACPI_CONTROL_NORMAL;
280 return_ACPI_STATUS (Status);
281}
282
283
284/*****************************************************************************
285 *
286 * FUNCTION: AcpiDsExecBeginOp
287 *
288 * PARAMETERS: WalkState - Current state of the parse tree walk
289 * OutOp - Where to return op if a new one is created
290 *
291 * RETURN: Status
292 *
293 * DESCRIPTION: Descending callback used during the execution of control
294 * methods. This is where most operators and operands are
295 * dispatched to the interpreter.
296 *
297 ****************************************************************************/
298
299ACPI_STATUS
300AcpiDsExecBeginOp (
301 ACPI_WALK_STATE *WalkState,
302 ACPI_PARSE_OBJECT **OutOp)
303{
304 ACPI_PARSE_OBJECT *Op;
305 ACPI_STATUS Status = AE_OK;
306 UINT32 OpcodeClass;
307
308
309 ACPI_FUNCTION_TRACE_PTR ("DsExecBeginOp", WalkState);
310
311
312 Op = WalkState->Op;
313 if (!Op)
314 {
315 Status = AcpiDsLoad2BeginOp (WalkState, OutOp);
316 if (ACPI_FAILURE (Status))
317 {
318 return_ACPI_STATUS (Status);
319 }
320
321 Op = *OutOp;
322 WalkState->Op = Op;
323 WalkState->Opcode = Op->Common.AmlOpcode;
324 WalkState->OpInfo = AcpiPsGetOpcodeInfo (Op->Common.AmlOpcode);
325
326 if (AcpiNsOpensScope (WalkState->OpInfo->ObjectType))
327 {
328 ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH,
329 "(%s) Popping scope for Op %p\n",
330 AcpiUtGetTypeName (WalkState->OpInfo->ObjectType), Op));
331
332 Status = AcpiDsScopeStackPop (WalkState);
333 if (ACPI_FAILURE (Status))
334 {
335 return_ACPI_STATUS (Status);
336 }
337 }
338 }
339
340 if (Op == WalkState->Origin)
341 {
342 if (OutOp)
343 {
344 *OutOp = Op;
345 }
346
347 return_ACPI_STATUS (AE_OK);
348 }
349
350 /*
351 * If the previous opcode was a conditional, this opcode
352 * must be the beginning of the associated predicate.
353 * Save this knowledge in the current scope descriptor
354 */
355 if ((WalkState->ControlState) &&
356 (WalkState->ControlState->Common.State ==
357 ACPI_CONTROL_CONDITIONAL_EXECUTING))
358 {
359 ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "Exec predicate Op=%p State=%p\n",
360 Op, WalkState));
361
362 WalkState->ControlState->Common.State = ACPI_CONTROL_PREDICATE_EXECUTING;
363
364 /* Save start of predicate */
365
366 WalkState->ControlState->Control.PredicateOp = Op;
367 }
368
369
370 OpcodeClass = WalkState->OpInfo->Class;
371
372 /* We want to send namepaths to the load code */
373
374 if (Op->Common.AmlOpcode == AML_INT_NAMEPATH_OP)
375 {
376 OpcodeClass = AML_CLASS_NAMED_OBJECT;
377 }
378
379 /*
380 * Handle the opcode based upon the opcode type
381 */
382 switch (OpcodeClass)
383 {
384 case AML_CLASS_CONTROL:
385
386 Status = AcpiDsResultStackPush (WalkState);
387 if (ACPI_FAILURE (Status))
388 {
389 return_ACPI_STATUS (Status);
390 }
391
392 Status = AcpiDsExecBeginControlOp (WalkState, Op);
393 break;
394
395
396 case AML_CLASS_NAMED_OBJECT:
397
398 if (WalkState->WalkType == ACPI_WALK_METHOD)
399 {
400 /*
401 * Found a named object declaration during method execution;
402 * we must enter this object into the namespace. The created
403 * object is temporary and will be deleted upon completion of
404 * the execution of this method.
405 */
406 Status = AcpiDsLoad2BeginOp (WalkState, NULL);
407 }
408
409 if (Op->Common.AmlOpcode == AML_REGION_OP)
410 {
411 Status = AcpiDsResultStackPush (WalkState);
412 }
413 break;
414
415
416 case AML_CLASS_EXECUTE:
417 case AML_CLASS_CREATE:
418
419 /*
420 * Most operators with arguments.
421 * Start a new result/operand state
422 */
423 Status = AcpiDsResultStackPush (WalkState);
424 break;
425
426
427 default:
428 break;
429 }
430
431 /* Nothing to do here during method execution */
432
433 return_ACPI_STATUS (Status);
434}
435
436
437/*****************************************************************************
438 *
439 * FUNCTION: AcpiDsExecEndOp
440 *
441 * PARAMETERS: WalkState - Current state of the parse tree walk
442 *
443 * RETURN: Status
444 *
445 * DESCRIPTION: Ascending callback used during the execution of control
446 * methods. The only thing we really need to do here is to
447 * notice the beginning of IF, ELSE, and WHILE blocks.
448 *
449 ****************************************************************************/
450
451ACPI_STATUS
452AcpiDsExecEndOp (
453 ACPI_WALK_STATE *WalkState)
454{
455 ACPI_PARSE_OBJECT *Op;
456 ACPI_STATUS Status = AE_OK;
457 UINT32 OpType;
458 UINT32 OpClass;
459 ACPI_PARSE_OBJECT *NextOp;
460 ACPI_PARSE_OBJECT *FirstArg;
461
462
463 ACPI_FUNCTION_TRACE_PTR ("DsExecEndOp", WalkState);
464
465
466 Op = WalkState->Op;
467 OpType = WalkState->OpInfo->Type;
468 OpClass = WalkState->OpInfo->Class;
469
470 if (OpClass == AML_CLASS_UNKNOWN)
471 {
472 ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "Unknown opcode %X\n", Op->Common.AmlOpcode));
473 return_ACPI_STATUS (AE_NOT_IMPLEMENTED);
474 }
475
476 FirstArg = Op->Common.Value.Arg;
477
478 /* Init the walk state */
479
480 WalkState->NumOperands = 0;
481 WalkState->ReturnDesc = NULL;
482 WalkState->ResultObj = NULL;
483
484 /* Call debugger for single step support (DEBUG build only) */
485
486 ACPI_DEBUGGER_EXEC (Status = AcpiDbSingleStep (WalkState, Op, OpClass));
487 ACPI_DEBUGGER_EXEC (if (ACPI_FAILURE (Status)) {return_ACPI_STATUS (Status);});
488
489 /* Decode the Opcode Class */
490
491 switch (OpClass)
492 {
493 case AML_CLASS_ARGUMENT: /* constants, literals, etc. - do nothing */
494 break;
495
496
497 case AML_CLASS_EXECUTE: /* most operators with arguments */
498
499 /* Build resolved operand stack */
500
501 Status = AcpiDsCreateOperands (WalkState, FirstArg);
502 if (ACPI_FAILURE (Status))
503 {
504 goto Cleanup;
505 }
506
507 /* Done with this result state (Now that operand stack is built) */
508
509 Status = AcpiDsResultStackPop (WalkState);
510 if (ACPI_FAILURE (Status))
511 {
512 goto Cleanup;
513 }
514
515 /*
516 * All opcodes require operand resolution, with the only exceptions
517 * being the ObjectType and SizeOf operators.
518 */
519 if (!(WalkState->OpInfo->Flags & AML_NO_OPERAND_RESOLVE))
520 {
521 /* Resolve all operands */
522
523 Status = AcpiExResolveOperands (WalkState->Opcode,
524 &(WalkState->Operands [WalkState->NumOperands -1]),
525 WalkState);
526 if (ACPI_SUCCESS (Status))
527 {
528 ACPI_DUMP_OPERANDS (ACPI_WALK_OPERANDS, ACPI_IMODE_EXECUTE,
529 AcpiPsGetOpcodeName (WalkState->Opcode),
530 WalkState->NumOperands, "after ExResolveOperands");
531 }
532 }
533
534 if (ACPI_SUCCESS (Status))
535 {
536 /*
537 * Dispatch the request to the appropriate interpreter handler
538 * routine. There is one routine per opcode "type" based upon the
539 * number of opcode arguments and return type.
540 */
541 Status = AcpiGbl_OpTypeDispatch[OpType] (WalkState);
542 }
543 else
544 {
545 /*
546 * Treat constructs of the form "Store(LocalX,LocalX)" as noops when the
547 * Local is uninitialized.
548 */
549 if ((Status == AE_AML_UNINITIALIZED_LOCAL) &&
550 (WalkState->Opcode == AML_STORE_OP) &&
551 (WalkState->Operands[0]->Common.Type == ACPI_TYPE_LOCAL_REFERENCE) &&
552 (WalkState->Operands[1]->Common.Type == ACPI_TYPE_LOCAL_REFERENCE) &&
553 (WalkState->Operands[0]->Reference.Opcode ==
554 WalkState->Operands[1]->Reference.Opcode) &&
555 (WalkState->Operands[0]->Reference.Offset ==
556 WalkState->Operands[1]->Reference.Offset))
557 {
558 Status = AE_OK;
559 }
560 else
561 {
562 ACPI_DEBUG_PRINT ((ACPI_DB_ERROR,
563 "[%s]: Could not resolve operands, %s\n",
564 AcpiPsGetOpcodeName (WalkState->Opcode),
565 AcpiFormatException (Status)));
566 }
567 }
568
569 /* Always delete the argument objects and clear the operand stack */
570
571 AcpiDsClearOperands (WalkState);
572
573 /*
574 * If a result object was returned from above, push it on the
575 * current result stack
576 */
577 if (ACPI_SUCCESS (Status) &&
578 WalkState->ResultObj)
579 {
580 Status = AcpiDsResultPush (WalkState->ResultObj, WalkState);
581 }
582
583 break;
584
585
586 default:
587
588 switch (OpType)
589 {
590 case AML_TYPE_CONTROL: /* Type 1 opcode, IF/ELSE/WHILE/NOOP */
591
592 /* 1 Operand, 0 ExternalResult, 0 InternalResult */
593
594 Status = AcpiDsExecEndControlOp (WalkState, Op);
595
596 /* Make sure to properly pop the result stack */
597
598 if (ACPI_SUCCESS (Status))
599 {
600 Status = AcpiDsResultStackPop (WalkState);
601 }
602 else if (Status == AE_CTRL_PENDING)
603 {
604 Status = AcpiDsResultStackPop (WalkState);
605 if (ACPI_SUCCESS (Status))
606 {
607 Status = AE_CTRL_PENDING;
608 }
609 }
610 break;
611
612
613 case AML_TYPE_METHOD_CALL:
614
615 /*
616 * If the method is referenced from within a package
617 * declaration, it is not a invocation of the method, just
618 * a reference to it.
619 */
620 if ((Op->Asl.Parent) &&
621 ((Op->Asl.Parent->Asl.AmlOpcode == AML_PACKAGE_OP) ||
622 (Op->Asl.Parent->Asl.AmlOpcode == AML_VAR_PACKAGE_OP)))
623 {
624 ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH,
625 "Method Reference in a Package, Op=%p\n", Op));
626 Op->Common.Node = (ACPI_NAMESPACE_NODE *) Op->Asl.Value.Arg->Asl.Node->Object;
627 AcpiUtAddReference (Op->Asl.Value.Arg->Asl.Node->Object);
628 return_ACPI_STATUS (AE_OK);
629 }
630
631 ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, "Method invocation, Op=%p\n", Op));
632
633 /*
634 * (AML_METHODCALL) Op->Asl.Value.Arg->Asl.Node contains
635 * the method Node pointer
636 */
637 /* NextOp points to the op that holds the method name */
638
639 NextOp = FirstArg;
640
641 /* NextOp points to first argument op */
642
643 NextOp = NextOp->Common.Next;
644
645 /*
646 * Get the method's arguments and put them on the operand stack
647 */
648 Status = AcpiDsCreateOperands (WalkState, NextOp);
649 if (ACPI_FAILURE (Status))
650 {
651 break;
652 }
653
654 /*
655 * Since the operands will be passed to another control method,
656 * we must resolve all local references here (Local variables,
657 * arguments to *this* method, etc.)
658 */
659 Status = AcpiDsResolveOperands (WalkState);
660 if (ACPI_FAILURE (Status))
661 {
662 /* On error, clear all resolved operands */
663
664 AcpiDsClearOperands (WalkState);
665 break;
666 }
667
668 /*
669 * Tell the walk loop to preempt this running method and
670 * execute the new method
671 */
672 Status = AE_CTRL_TRANSFER;
673
674 /*
675 * Return now; we don't want to disturb anything,
676 * especially the operand count!
677 */
678 return_ACPI_STATUS (Status);
679
680
681 case AML_TYPE_CREATE_FIELD:
682
683 ACPI_DEBUG_PRINT ((ACPI_DB_EXEC,
684 "Executing CreateField Buffer/Index Op=%p\n", Op));
685
686 Status = AcpiDsLoad2EndOp (WalkState);
687 if (ACPI_FAILURE (Status))
688 {
689 break;
690 }
691
692 Status = AcpiDsEvalBufferFieldOperands (WalkState, Op);
693 break;
694
695
696 case AML_TYPE_CREATE_OBJECT:
697
698 ACPI_DEBUG_PRINT ((ACPI_DB_EXEC,
699 "Executing CreateObject (Buffer/Package) Op=%p\n", Op));
700
701 switch (Op->Common.Parent->Common.AmlOpcode)
702 {
703 case AML_NAME_OP:
704
705 /*
706 * Put the Node on the object stack (Contains the ACPI Name
707 * of this object)
708 */
709 WalkState->Operands[0] = (void *) Op->Common.Parent->Common.Node;
710 WalkState->NumOperands = 1;
711
712 Status = AcpiDsCreateNode (WalkState,
713 Op->Common.Parent->Common.Node,
714 Op->Common.Parent);
715 if (ACPI_FAILURE (Status))
716 {
717 break;
718 }
719
720 /* Fall through */
721 /*lint -fallthrough */
722
723 case AML_INT_EVAL_SUBTREE_OP:
724
725 Status = AcpiDsEvalDataObjectOperands (WalkState, Op,
726 AcpiNsGetAttachedObject (Op->Common.Parent->Common.Node));
727 break;
728
729 default:
730
731 Status = AcpiDsEvalDataObjectOperands (WalkState, Op, NULL);
732 break;
733 }
734
735 /* Done with result state (Now that operand stack is built) */
736
737 Status = AcpiDsResultStackPop (WalkState);
738 if (ACPI_FAILURE (Status))
739 {
740 goto Cleanup;
741 }
742
743 /*
744 * If a result object was returned from above, push it on the
745 * current result stack
746 */
747 if (WalkState->ResultObj)
748 {
749 Status = AcpiDsResultPush (WalkState->ResultObj, WalkState);
750 }
751 break;
752
753
754 case AML_TYPE_NAMED_FIELD:
755 case AML_TYPE_NAMED_COMPLEX:
756 case AML_TYPE_NAMED_SIMPLE:
757 case AML_TYPE_NAMED_NO_OBJ:
758
759 Status = AcpiDsLoad2EndOp (WalkState);
760 if (ACPI_FAILURE (Status))
761 {
762 break;
763 }
764
765 if (Op->Common.AmlOpcode == AML_REGION_OP)
766 {
767 ACPI_DEBUG_PRINT ((ACPI_DB_EXEC,
768 "Executing OpRegion Address/Length Op=%p\n", Op));
769
770 Status = AcpiDsEvalRegionOperands (WalkState, Op);
771 if (ACPI_FAILURE (Status))
772 {
773 break;
774 }
775
776 Status = AcpiDsResultStackPop (WalkState);
777 }
778
779 break;
780
781
782 case AML_TYPE_UNDEFINED:
783
784 ACPI_DEBUG_PRINT ((ACPI_DB_ERROR,
785 "Undefined opcode type Op=%p\n", Op));
786 return_ACPI_STATUS (AE_NOT_IMPLEMENTED);
787
788
789 case AML_TYPE_BOGUS:
790
791 ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH,
792 "Internal opcode=%X type Op=%p\n",
793 WalkState->Opcode, Op));
794 break;
795
796
797 default:
798
799 ACPI_DEBUG_PRINT ((ACPI_DB_ERROR,
800 "Unimplemented opcode, class=%X type=%X Opcode=%X Op=%p\n",
801 OpClass, OpType, Op->Common.AmlOpcode, Op));
802
803 Status = AE_NOT_IMPLEMENTED;
804 break;
805 }
806 }
807
808 /*
809 * ACPI 2.0 support for 64-bit integers: Truncate numeric
810 * result value if we are executing from a 32-bit ACPI table
811 */
812 AcpiExTruncateFor32bitTable (WalkState->ResultObj);
813
814 /*
815 * Check if we just completed the evaluation of a
816 * conditional predicate
817 */
818
819 if ((ACPI_SUCCESS (Status)) &&
820 (WalkState->ControlState) &&
821 (WalkState->ControlState->Common.State ==
822 ACPI_CONTROL_PREDICATE_EXECUTING) &&
823 (WalkState->ControlState->Control.PredicateOp == Op))
824 {
825 Status = AcpiDsGetPredicateValue (WalkState, WalkState->ResultObj);
826 WalkState->ResultObj = NULL;
827 }
828
829
830Cleanup:
831
832 /* Invoke exception handler on error */
833
834 if (ACPI_FAILURE (Status) &&
835 AcpiGbl_ExceptionHandler &&
836 !(Status & AE_CODE_CONTROL))
837 {
838 AcpiExExitInterpreter ();
839 Status = AcpiGbl_ExceptionHandler (Status,
840 WalkState->MethodNode->Name.Integer, WalkState->Opcode,
841 WalkState->AmlOffset, NULL);
842 (void) AcpiExEnterInterpreter ();
843 }
844
845 if (WalkState->ResultObj)
846 {
847 /* Break to debugger to display result */
848
849 ACPI_DEBUGGER_EXEC (AcpiDbDisplayResultObject (WalkState->ResultObj,
850 WalkState));
851
852 /*
853 * Delete the result op if and only if:
854 * Parent will not use the result -- such as any
855 * non-nested type2 op in a method (parent will be method)
856 */
857 AcpiDsDeleteResultIfNotUsed (Op, WalkState->ResultObj, WalkState);
858 }
859
860#ifdef _UNDER_DEVELOPMENT
861
862 if (WalkState->ParserState.Aml == WalkState->ParserState.AmlEnd)
863 {
864 AcpiDbMethodEnd (WalkState);
865 }
866#endif
867
868 /* Always clear the object stack */
869
870 WalkState->NumOperands = 0;
871
872#ifdef ACPI_DISASSEMBLER
873
874 /* On error, display method locals/args */
875
876 if (ACPI_FAILURE (Status))
877 {
878 AcpiDmDumpMethodInfo (Status, WalkState, Op);
879 }
880#endif
881
882 return_ACPI_STATUS (Status);
883}
884
885