1
2 /******************************************************************************
3 *
4 * Module Name: exoparg1 - AML execution - opcodes with 1 argument
5 *
6 *****************************************************************************/
7
8 /*
9 * Copyright (C) 2000 - 2011, 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.
164 AcpiExOpcode_1A_0T_0R (
165 ACPI_WALK_STATE *WalkState)
166 {
167 ACPI_OPERAND_OBJECT **Operand = &WalkState->Operands[0];
168 ACPI_STATUS Status = AE_OK;
169
170
171 ACPI_FUNCTION_TRACE_STR (ExOpcode_1A_0T_0R,
172 AcpiPsGetOpcodeName (WalkState->Opcode));
173
174
175 /* Examine the AML opcode */
176
177 switch (WalkState->Opcode)
178 {
179 case AML_RELEASE_OP: /* Release (MutexObject) */
180
181 Status = AcpiExReleaseMutex (Operand[0], WalkState);
182 break;
183
184
185 case AML_RESET_OP: /* Reset (EventObject) */
186
187 Status = AcpiExSystemResetEvent (Operand[0]);
188 break;
189
190
191 case AML_SIGNAL_OP: /* Signal (EventObject) */
192
193 Status = AcpiExSystemSignalEvent (Operand[0]);
194 break;
195
196
197 case AML_SLEEP_OP: /* Sleep (MsecTime) */
198
199 Status = AcpiExSystemDoSleep (Operand[0]->Integer.Value);
200 break;
201
202
203 case AML_STALL_OP: /* Stall (UsecTime) */
204
205 Status = AcpiExSystemDoStall ((UINT32) Operand[0]->Integer.Value);
206 break;
207
208
209 case AML_UNLOAD_OP: /* Unload (Handle) */
210
211 Status = AcpiExUnloadTable (Operand[0]);
212 break;
213
214
215 default: /* Unknown opcode */
216
217 ACPI_ERROR ((AE_INFO, "Unknown AML opcode 0x%X",
218 WalkState->Opcode));
219 Status = AE_AML_BAD_OPCODE;
220 break;
221 }
222
223 return_ACPI_STATUS (Status);
224 }
225
226
227 /*******************************************************************************
228 *
229 * FUNCTION: AcpiExOpcode_1A_1T_0R
230 *
231 * PARAMETERS: WalkState - Current state (contains AML opcode)
232 *
233 * RETURN: Status
234 *
314 case AML_FROM_BCD_OP:
315 case AML_TO_BCD_OP:
316 case AML_COND_REF_OF_OP:
317
318 /* Create a return object of type Integer for these opcodes */
319
320 ReturnDesc = AcpiUtCreateInternalObject (ACPI_TYPE_INTEGER);
321 if (!ReturnDesc)
322 {
323 Status = AE_NO_MEMORY;
324 goto Cleanup;
325 }
326
327 switch (WalkState->Opcode)
328 {
329 case AML_BIT_NOT_OP: /* Not (Operand, Result) */
330
331 ReturnDesc->Integer.Value = ~Operand[0]->Integer.Value;
332 break;
333
334
335 case AML_FIND_SET_LEFT_BIT_OP: /* FindSetLeftBit (Operand, Result) */
336
337 ReturnDesc->Integer.Value = Operand[0]->Integer.Value;
338
339 /*
340 * Acpi specification describes Integer type as a little
341 * endian unsigned value, so this boundary condition is valid.
342 */
343 for (Temp32 = 0; ReturnDesc->Integer.Value &&
344 Temp32 < ACPI_INTEGER_BIT_SIZE; ++Temp32)
345 {
346 ReturnDesc->Integer.Value >>= 1;
347 }
348
349 ReturnDesc->Integer.Value = Temp32;
350 break;
351
352
353 case AML_FIND_SET_RIGHT_BIT_OP: /* FindSetRightBit (Operand, Result) */
354
355 ReturnDesc->Integer.Value = Operand[0]->Integer.Value;
356
357 /*
358 * The Acpi specification describes Integer type as a little
359 * endian unsigned value, so this boundary condition is valid.
360 */
361 for (Temp32 = 0; ReturnDesc->Integer.Value &&
362 Temp32 < ACPI_INTEGER_BIT_SIZE; ++Temp32)
363 {
364 ReturnDesc->Integer.Value <<= 1;
365 }
366
367 /* Since the bit position is one-based, subtract from 33 (65) */
368
369 ReturnDesc->Integer.Value =
370 Temp32 == 0 ? 0 : (ACPI_INTEGER_BIT_SIZE + 1) - Temp32;
371 break;
372
373
374 case AML_FROM_BCD_OP: /* FromBcd (BCDValue, Result) */
375
376 /*
377 * The 64-bit ACPI integer can hold 16 4-bit BCD characters
378 * (if table is 32-bit, integer can hold 8 BCD characters)
379 * Convert each 4-bit BCD value
380 */
381 PowerOfTen = 1;
382 ReturnDesc->Integer.Value = 0;
383 Digit = Operand[0]->Integer.Value;
384
385 /* Convert each BCD digit (each is one nybble wide) */
386
387 for (i = 0; (i < AcpiGbl_IntegerNybbleWidth) && (Digit > 0); i++)
388 {
389 /* Get the least significant 4-bit BCD digit */
390
391 Temp32 = ((UINT32) Digit) & 0xF;
392
393 /* Check the range of the digit */
394
395 if (Temp32 > 9)
400
401 Status = AE_AML_NUMERIC_OVERFLOW;
402 goto Cleanup;
403 }
404
405 /* Sum the digit into the result with the current power of 10 */
406
407 ReturnDesc->Integer.Value +=
408 (((UINT64) Temp32) * PowerOfTen);
409
410 /* Shift to next BCD digit */
411
412 Digit >>= 4;
413
414 /* Next power of 10 */
415
416 PowerOfTen *= 10;
417 }
418 break;
419
420
421 case AML_TO_BCD_OP: /* ToBcd (Operand, Result) */
422
423 ReturnDesc->Integer.Value = 0;
424 Digit = Operand[0]->Integer.Value;
425
426 /* Each BCD digit is one nybble wide */
427
428 for (i = 0; (i < AcpiGbl_IntegerNybbleWidth) && (Digit > 0); i++)
429 {
430 (void) AcpiUtShortDivide (Digit, 10, &Digit, &Temp32);
431
432 /*
433 * Insert the BCD digit that resides in the
434 * remainder from above
435 */
436 ReturnDesc->Integer.Value |=
437 (((UINT64) Temp32) << ACPI_MUL_4 (i));
438 }
439
440 /* Overflow if there is any data left in Digit */
441
442 if (Digit > 0)
443 {
444 ACPI_ERROR ((AE_INFO,
445 "Integer too large to convert to BCD: 0x%8.8X%8.8X",
446 ACPI_FORMAT_UINT64 (Operand[0]->Integer.Value)));
447 Status = AE_AML_NUMERIC_OVERFLOW;
448 goto Cleanup;
449 }
450 break;
451
452
453 case AML_COND_REF_OF_OP: /* CondRefOf (SourceObject, Result) */
454
455 /*
456 * This op is a little strange because the internal return value is
457 * different than the return value stored in the result descriptor
458 * (There are really two return values)
459 */
460 if ((ACPI_NAMESPACE_NODE *) Operand[0] == AcpiGbl_RootNode)
461 {
462 /*
463 * This means that the object does not exist in the namespace,
464 * return FALSE
465 */
466 ReturnDesc->Integer.Value = 0;
467 goto Cleanup;
468 }
469
470 /* Get the object reference, store it, and remove our reference */
471
472 Status = AcpiExGetObjectReference (Operand[0],
473 &ReturnDesc2, WalkState);
474 if (ACPI_FAILURE (Status))
475 {
476 goto Cleanup;
477 }
478
479 Status = AcpiExStore (ReturnDesc2, Operand[1], WalkState);
480 AcpiUtRemoveReference (ReturnDesc2);
481
482 /* The object exists in the namespace, return TRUE */
483
484 ReturnDesc->Integer.Value = ACPI_UINT64_MAX;
485 goto Cleanup;
486
487
488 default:
489 /* No other opcodes get here */
490 break;
491 }
492 break;
493
494
495 case AML_STORE_OP: /* Store (Source, Target) */
496
497 /*
498 * A store operand is typically a number, string, buffer or lvalue
499 * Be careful about deleting the source object,
500 * since the object itself may have been stored.
501 */
502 Status = AcpiExStore (Operand[0], Operand[1], WalkState);
503 if (ACPI_FAILURE (Status))
504 {
505 return_ACPI_STATUS (Status);
506 }
507
508 /* It is possible that the Store already produced a return object */
509
510 if (!WalkState->ResultObj)
511 {
512 /*
513 * Normally, we would remove a reference on the Operand[0]
514 * parameter; But since it is being used as the internal return
515 * object (meaning we would normally increment it), the two
516 * cancel out, and we simply don't do anything.
517 */
518 WalkState->ResultObj = Operand[0];
519 WalkState->Operands[0] = NULL; /* Prevent deletion */
520 }
521 return_ACPI_STATUS (Status);
522
523
524 /*
525 * ACPI 2.0 Opcodes
526 */
527 case AML_COPY_OP: /* Copy (Source, Target) */
528
529 Status = AcpiUtCopyIobjectToIobject (Operand[0], &ReturnDesc,
530 WalkState);
531 break;
532
533
534 case AML_TO_DECSTRING_OP: /* ToDecimalString (Data, Result) */
535
536 Status = AcpiExConvertToString (Operand[0], &ReturnDesc,
537 ACPI_EXPLICIT_CONVERT_DECIMAL);
538 if (ReturnDesc == Operand[0])
539 {
540 /* No conversion performed, add ref to handle return value */
541 AcpiUtAddReference (ReturnDesc);
542 }
543 break;
544
545
546 case AML_TO_HEXSTRING_OP: /* ToHexString (Data, Result) */
547
548 Status = AcpiExConvertToString (Operand[0], &ReturnDesc,
549 ACPI_EXPLICIT_CONVERT_HEX);
550 if (ReturnDesc == Operand[0])
551 {
552 /* No conversion performed, add ref to handle return value */
553 AcpiUtAddReference (ReturnDesc);
554 }
555 break;
556
557
558 case AML_TO_BUFFER_OP: /* ToBuffer (Data, Result) */
559
560 Status = AcpiExConvertToBuffer (Operand[0], &ReturnDesc);
561 if (ReturnDesc == Operand[0])
562 {
563 /* No conversion performed, add ref to handle return value */
564 AcpiUtAddReference (ReturnDesc);
565 }
566 break;
567
568
569 case AML_TO_INTEGER_OP: /* ToInteger (Data, Result) */
570
571 Status = AcpiExConvertToInteger (Operand[0], &ReturnDesc,
572 ACPI_ANY_BASE);
573 if (ReturnDesc == Operand[0])
574 {
575 /* No conversion performed, add ref to handle return value */
576 AcpiUtAddReference (ReturnDesc);
577 }
578 break;
579
580
581 case AML_SHIFT_LEFT_BIT_OP: /* ShiftLeftBit (Source, BitNum) */
582 case AML_SHIFT_RIGHT_BIT_OP: /* ShiftRightBit (Source, BitNum) */
583
584 /* These are two obsolete opcodes */
585
586 ACPI_ERROR ((AE_INFO,
587 "%s is obsolete and not implemented",
588 AcpiPsGetOpcodeName (WalkState->Opcode)));
589 Status = AE_SUPPORT;
590 goto Cleanup;
591
592
593 default: /* Unknown opcode */
594
595 ACPI_ERROR ((AE_INFO, "Unknown AML opcode 0x%X",
596 WalkState->Opcode));
597 Status = AE_AML_BAD_OPCODE;
598 goto Cleanup;
599 }
600
601 if (ACPI_SUCCESS (Status))
602 {
603 /* Store the return value computed above into the target object */
604
605 Status = AcpiExStore (ReturnDesc, Operand[1], WalkState);
606 }
607
608
609 Cleanup:
610
611 /* Delete return object on error */
612
660 {
661 case AML_LNOT_OP: /* LNot (Operand) */
662
663 ReturnDesc = AcpiUtCreateIntegerObject ((UINT64) 0);
664 if (!ReturnDesc)
665 {
666 Status = AE_NO_MEMORY;
667 goto Cleanup;
668 }
669
670 /*
671 * Set result to ONES (TRUE) if Value == 0. Note:
672 * ReturnDesc->Integer.Value is initially == 0 (FALSE) from above.
673 */
674 if (!Operand[0]->Integer.Value)
675 {
676 ReturnDesc->Integer.Value = ACPI_UINT64_MAX;
677 }
678 break;
679
680
681 case AML_DECREMENT_OP: /* Decrement (Operand) */
682 case AML_INCREMENT_OP: /* Increment (Operand) */
683
684 /*
685 * Create a new integer. Can't just get the base integer and
686 * increment it because it may be an Arg or Field.
687 */
688 ReturnDesc = AcpiUtCreateInternalObject (ACPI_TYPE_INTEGER);
689 if (!ReturnDesc)
690 {
691 Status = AE_NO_MEMORY;
692 goto Cleanup;
693 }
694
695 /*
696 * Since we are expecting a Reference operand, it can be either a
697 * NS Node or an internal object.
698 */
699 TempDesc = Operand[0];
700 if (ACPI_GET_DESCRIPTOR_TYPE (TempDesc) == ACPI_DESC_TYPE_OPERAND)
701 {
702 /* Internal reference object - prevent deletion */
703
728 if (WalkState->Opcode == AML_INCREMENT_OP)
729 {
730 ReturnDesc->Integer.Value = TempDesc->Integer.Value +1;
731 }
732 else
733 {
734 ReturnDesc->Integer.Value = TempDesc->Integer.Value -1;
735 }
736
737 /* Finished with this Integer object */
738
739 AcpiUtRemoveReference (TempDesc);
740
741 /*
742 * Store the result back (indirectly) through the original
743 * Reference object
744 */
745 Status = AcpiExStore (ReturnDesc, Operand[0], WalkState);
746 break;
747
748
749 case AML_TYPE_OP: /* ObjectType (SourceObject) */
750
751 /*
752 * Note: The operand is not resolved at this point because we want to
753 * get the associated object, not its value. For example, we don't
754 * want to resolve a FieldUnit to its value, we want the actual
755 * FieldUnit object.
756 */
757
758 /* Get the type of the base object */
759
760 Status = AcpiExResolveMultiple (WalkState, Operand[0], &Type, NULL);
761 if (ACPI_FAILURE (Status))
762 {
763 goto Cleanup;
764 }
765
766 /* Allocate a descriptor to hold the type. */
767
768 ReturnDesc = AcpiUtCreateIntegerObject ((UINT64) Type);
769 if (!ReturnDesc)
770 {
771 Status = AE_NO_MEMORY;
772 goto Cleanup;
773 }
774 break;
775
776
777 case AML_SIZE_OF_OP: /* SizeOf (SourceObject) */
778
779 /*
780 * Note: The operand is not resolved at this point because we want to
781 * get the associated object, not its value.
782 */
783
784 /* Get the base object */
785
786 Status = AcpiExResolveMultiple (WalkState,
787 Operand[0], &Type, &TempDesc);
788 if (ACPI_FAILURE (Status))
789 {
790 goto Cleanup;
791 }
792
793 /*
794 * The type of the base object must be integer, buffer, string, or
795 * package. All others are not supported.
796 *
797 * NOTE: Integer is not specifically supported by the ACPI spec,
798 * but is supported implicitly via implicit operand conversion.
799 * rather than bother with conversion, we just use the byte width
800 * global (4 or 8 bytes).
801 */
802 switch (Type)
803 {
804 case ACPI_TYPE_INTEGER:
805 Value = AcpiGbl_IntegerByteWidth;
806 break;
807
808 case ACPI_TYPE_STRING:
809 Value = TempDesc->String.Length;
810 break;
811
812 case ACPI_TYPE_BUFFER:
813
814 /* Buffer arguments may not be evaluated at this point */
815
816 Status = AcpiDsGetBufferArguments (TempDesc);
817 Value = TempDesc->Buffer.Length;
818 break;
819
820 case ACPI_TYPE_PACKAGE:
821
822 /* Package arguments may not be evaluated at this point */
823
824 Status = AcpiDsGetPackageArguments (TempDesc);
825 Value = TempDesc->Package.Count;
826 break;
827
828 default:
829 ACPI_ERROR ((AE_INFO,
830 "Operand must be Buffer/Integer/String/Package - found type %s",
831 AcpiUtGetTypeName (Type)));
832 Status = AE_AML_OPERAND_TYPE;
833 goto Cleanup;
834 }
835
836 if (ACPI_FAILURE (Status))
837 {
838 goto Cleanup;
839 }
840
841 /*
842 * Now that we have the size of the object, create a result
843 * object to hold the value
844 */
845 ReturnDesc = AcpiUtCreateIntegerObject (Value);
846 if (!ReturnDesc)
847 {
848 Status = AE_NO_MEMORY;
916 Operand[0] = TempDesc;
917 break;
918
919 case ACPI_REFCLASS_REFOF:
920
921 /* Get the object to which the reference refers */
922
923 TempDesc = Operand[0]->Reference.Object;
924 AcpiUtRemoveReference (Operand[0]);
925 Operand[0] = TempDesc;
926 break;
927
928 default:
929
930 /* Must be an Index op - handled below */
931 break;
932 }
933 break;
934
935 case ACPI_TYPE_STRING:
936 break;
937
938 default:
939 Status = AE_AML_OPERAND_TYPE;
940 goto Cleanup;
941 }
942 }
943
944 if (ACPI_GET_DESCRIPTOR_TYPE (Operand[0]) != ACPI_DESC_TYPE_NAMED)
945 {
946 if ((Operand[0])->Common.Type == ACPI_TYPE_STRING)
947 {
948 /*
949 * This is a DerefOf (String). The string is a reference
950 * to a named ACPI object.
951 *
952 * 1) Find the owning Node
953 * 2) Dereference the node to an actual object. Could be a
954 * Field, so we need to resolve the node to a value.
955 */
956 Status = AcpiNsGetNode (WalkState->ScopeInfo->Scope.Node,
957 Operand[0]->String.Pointer,
958 ACPI_NS_SEARCH_PARENT,
977 {
978 /*
979 * This is a DerefOf (ObjectReference)
980 * Get the actual object from the Node (This is the dereference).
981 * This case may only happen when a LocalX or ArgX is
982 * dereferenced above.
983 */
984 ReturnDesc = AcpiNsGetAttachedObject (
985 (ACPI_NAMESPACE_NODE *) Operand[0]);
986 AcpiUtAddReference (ReturnDesc);
987 }
988 else
989 {
990 /*
991 * This must be a reference object produced by either the
992 * Index() or RefOf() operator
993 */
994 switch (Operand[0]->Reference.Class)
995 {
996 case ACPI_REFCLASS_INDEX:
997
998 /*
999 * The target type for the Index operator must be
1000 * either a Buffer or a Package
1001 */
1002 switch (Operand[0]->Reference.TargetType)
1003 {
1004 case ACPI_TYPE_BUFFER_FIELD:
1005
1006 TempDesc = Operand[0]->Reference.Object;
1007
1008 /*
1009 * Create a new object that contains one element of the
1010 * buffer -- the element pointed to by the index.
1011 *
1012 * NOTE: index into a buffer is NOT a pointer to a
1013 * sub-buffer of the main buffer, it is only a pointer to a
1014 * single element (byte) of the buffer!
1015 *
1016 * Since we are returning the value of the buffer at the
1017 * indexed location, we don't need to add an additional
1018 * reference to the buffer itself.
1019 */
1020 ReturnDesc = AcpiUtCreateIntegerObject ((UINT64)
1021 TempDesc->Buffer.Pointer[Operand[0]->Reference.Value]);
1022 if (!ReturnDesc)
1023 {
1024 Status = AE_NO_MEMORY;
1025 goto Cleanup;
1026 }
1027 break;
1028
1029
1030 case ACPI_TYPE_PACKAGE:
1031
1032 /*
1033 * Return the referenced element of the package. We must
1034 * add another reference to the referenced object, however.
1035 */
1036 ReturnDesc = *(Operand[0]->Reference.Where);
1037 if (ReturnDesc)
1038 {
1039 AcpiUtAddReference (ReturnDesc);
1040 }
1041 break;
1042
1043
1044 default:
1045
1046 ACPI_ERROR ((AE_INFO,
1047 "Unknown Index TargetType 0x%X in reference object %p",
1048 Operand[0]->Reference.TargetType, Operand[0]));
1049 Status = AE_AML_OPERAND_TYPE;
1050 goto Cleanup;
1051 }
1052 break;
1053
1054
1055 case ACPI_REFCLASS_REFOF:
1056
1057 ReturnDesc = Operand[0]->Reference.Object;
1058
1059 if (ACPI_GET_DESCRIPTOR_TYPE (ReturnDesc) ==
1060 ACPI_DESC_TYPE_NAMED)
1061 {
1062 ReturnDesc = AcpiNsGetAttachedObject (
1063 (ACPI_NAMESPACE_NODE *) ReturnDesc);
1064 }
1065
1066 /* Add another reference to the object! */
1067
1068 AcpiUtAddReference (ReturnDesc);
1069 break;
1070
1071
1072 default:
1073 ACPI_ERROR ((AE_INFO,
1074 "Unknown class in reference(%p) - 0x%2.2X",
1075 Operand[0], Operand[0]->Reference.Class));
1076
1077 Status = AE_TYPE;
1078 goto Cleanup;
1079 }
1080 }
1081 break;
1082
1083
1084 default:
1085
1086 ACPI_ERROR ((AE_INFO, "Unknown AML opcode 0x%X",
1087 WalkState->Opcode));
1088 Status = AE_AML_BAD_OPCODE;
1089 goto Cleanup;
1090 }
1091
1092
1093 Cleanup:
1094
1095 /* Delete return object on error */
1096
1097 if (ACPI_FAILURE (Status))
1098 {
1099 AcpiUtRemoveReference (ReturnDesc);
1100 }
1101
1102 /* Save return object on success */
1103
1104 else
1105 {
1106 WalkState->ResultObj = ReturnDesc;
1107 }
1108
1109 return_ACPI_STATUS (Status);
1110 }
1111
|
1 /******************************************************************************
2 *
3 * Module Name: exoparg1 - AML execution - opcodes with 1 argument
4 *
5 *****************************************************************************/
6
7 /*
8 * Copyright (C) 2000 - 2013, Intel Corp.
9 * All rights reserved.
10 *
11 * Redistribution and use in source and binary forms, with or without
12 * modification, are permitted provided that the following conditions
13 * are met:
14 * 1. Redistributions of source code must retain the above copyright
15 * notice, this list of conditions, and the following disclaimer,
16 * without modification.
17 * 2. Redistributions in binary form must reproduce at minimum a disclaimer
18 * substantially similar to the "NO WARRANTY" disclaimer below
19 * ("Disclaimer") and any redistribution must be conditioned upon
20 * including a substantially similar Disclaimer requirement for further
21 * binary redistribution.
22 * 3. Neither the names of the above-listed copyright holders nor the names
23 * of any contributors may be used to endorse or promote products derived
24 * from this software without specific prior written permission.
25 *
26 * Alternatively, this software may be distributed under the terms of the
27 * GNU General Public License ("GPL") version 2 as published by the Free
28 * Software Foundation.
163 AcpiExOpcode_1A_0T_0R (
164 ACPI_WALK_STATE *WalkState)
165 {
166 ACPI_OPERAND_OBJECT **Operand = &WalkState->Operands[0];
167 ACPI_STATUS Status = AE_OK;
168
169
170 ACPI_FUNCTION_TRACE_STR (ExOpcode_1A_0T_0R,
171 AcpiPsGetOpcodeName (WalkState->Opcode));
172
173
174 /* Examine the AML opcode */
175
176 switch (WalkState->Opcode)
177 {
178 case AML_RELEASE_OP: /* Release (MutexObject) */
179
180 Status = AcpiExReleaseMutex (Operand[0], WalkState);
181 break;
182
183 case AML_RESET_OP: /* Reset (EventObject) */
184
185 Status = AcpiExSystemResetEvent (Operand[0]);
186 break;
187
188 case AML_SIGNAL_OP: /* Signal (EventObject) */
189
190 Status = AcpiExSystemSignalEvent (Operand[0]);
191 break;
192
193 case AML_SLEEP_OP: /* Sleep (MsecTime) */
194
195 Status = AcpiExSystemDoSleep (Operand[0]->Integer.Value);
196 break;
197
198 case AML_STALL_OP: /* Stall (UsecTime) */
199
200 Status = AcpiExSystemDoStall ((UINT32) Operand[0]->Integer.Value);
201 break;
202
203 case AML_UNLOAD_OP: /* Unload (Handle) */
204
205 Status = AcpiExUnloadTable (Operand[0]);
206 break;
207
208 default: /* Unknown opcode */
209
210 ACPI_ERROR ((AE_INFO, "Unknown AML opcode 0x%X",
211 WalkState->Opcode));
212 Status = AE_AML_BAD_OPCODE;
213 break;
214 }
215
216 return_ACPI_STATUS (Status);
217 }
218
219
220 /*******************************************************************************
221 *
222 * FUNCTION: AcpiExOpcode_1A_1T_0R
223 *
224 * PARAMETERS: WalkState - Current state (contains AML opcode)
225 *
226 * RETURN: Status
227 *
307 case AML_FROM_BCD_OP:
308 case AML_TO_BCD_OP:
309 case AML_COND_REF_OF_OP:
310
311 /* Create a return object of type Integer for these opcodes */
312
313 ReturnDesc = AcpiUtCreateInternalObject (ACPI_TYPE_INTEGER);
314 if (!ReturnDesc)
315 {
316 Status = AE_NO_MEMORY;
317 goto Cleanup;
318 }
319
320 switch (WalkState->Opcode)
321 {
322 case AML_BIT_NOT_OP: /* Not (Operand, Result) */
323
324 ReturnDesc->Integer.Value = ~Operand[0]->Integer.Value;
325 break;
326
327 case AML_FIND_SET_LEFT_BIT_OP: /* FindSetLeftBit (Operand, Result) */
328
329 ReturnDesc->Integer.Value = Operand[0]->Integer.Value;
330
331 /*
332 * Acpi specification describes Integer type as a little
333 * endian unsigned value, so this boundary condition is valid.
334 */
335 for (Temp32 = 0; ReturnDesc->Integer.Value &&
336 Temp32 < ACPI_INTEGER_BIT_SIZE; ++Temp32)
337 {
338 ReturnDesc->Integer.Value >>= 1;
339 }
340
341 ReturnDesc->Integer.Value = Temp32;
342 break;
343
344 case AML_FIND_SET_RIGHT_BIT_OP: /* FindSetRightBit (Operand, Result) */
345
346 ReturnDesc->Integer.Value = Operand[0]->Integer.Value;
347
348 /*
349 * The Acpi specification describes Integer type as a little
350 * endian unsigned value, so this boundary condition is valid.
351 */
352 for (Temp32 = 0; ReturnDesc->Integer.Value &&
353 Temp32 < ACPI_INTEGER_BIT_SIZE; ++Temp32)
354 {
355 ReturnDesc->Integer.Value <<= 1;
356 }
357
358 /* Since the bit position is one-based, subtract from 33 (65) */
359
360 ReturnDesc->Integer.Value =
361 Temp32 == 0 ? 0 : (ACPI_INTEGER_BIT_SIZE + 1) - Temp32;
362 break;
363
364 case AML_FROM_BCD_OP: /* FromBcd (BCDValue, Result) */
365 /*
366 * The 64-bit ACPI integer can hold 16 4-bit BCD characters
367 * (if table is 32-bit, integer can hold 8 BCD characters)
368 * Convert each 4-bit BCD value
369 */
370 PowerOfTen = 1;
371 ReturnDesc->Integer.Value = 0;
372 Digit = Operand[0]->Integer.Value;
373
374 /* Convert each BCD digit (each is one nybble wide) */
375
376 for (i = 0; (i < AcpiGbl_IntegerNybbleWidth) && (Digit > 0); i++)
377 {
378 /* Get the least significant 4-bit BCD digit */
379
380 Temp32 = ((UINT32) Digit) & 0xF;
381
382 /* Check the range of the digit */
383
384 if (Temp32 > 9)
389
390 Status = AE_AML_NUMERIC_OVERFLOW;
391 goto Cleanup;
392 }
393
394 /* Sum the digit into the result with the current power of 10 */
395
396 ReturnDesc->Integer.Value +=
397 (((UINT64) Temp32) * PowerOfTen);
398
399 /* Shift to next BCD digit */
400
401 Digit >>= 4;
402
403 /* Next power of 10 */
404
405 PowerOfTen *= 10;
406 }
407 break;
408
409 case AML_TO_BCD_OP: /* ToBcd (Operand, Result) */
410
411 ReturnDesc->Integer.Value = 0;
412 Digit = Operand[0]->Integer.Value;
413
414 /* Each BCD digit is one nybble wide */
415
416 for (i = 0; (i < AcpiGbl_IntegerNybbleWidth) && (Digit > 0); i++)
417 {
418 (void) AcpiUtShortDivide (Digit, 10, &Digit, &Temp32);
419
420 /*
421 * Insert the BCD digit that resides in the
422 * remainder from above
423 */
424 ReturnDesc->Integer.Value |=
425 (((UINT64) Temp32) << ACPI_MUL_4 (i));
426 }
427
428 /* Overflow if there is any data left in Digit */
429
430 if (Digit > 0)
431 {
432 ACPI_ERROR ((AE_INFO,
433 "Integer too large to convert to BCD: 0x%8.8X%8.8X",
434 ACPI_FORMAT_UINT64 (Operand[0]->Integer.Value)));
435 Status = AE_AML_NUMERIC_OVERFLOW;
436 goto Cleanup;
437 }
438 break;
439
440 case AML_COND_REF_OF_OP: /* CondRefOf (SourceObject, Result) */
441 /*
442 * This op is a little strange because the internal return value is
443 * different than the return value stored in the result descriptor
444 * (There are really two return values)
445 */
446 if ((ACPI_NAMESPACE_NODE *) Operand[0] == AcpiGbl_RootNode)
447 {
448 /*
449 * This means that the object does not exist in the namespace,
450 * return FALSE
451 */
452 ReturnDesc->Integer.Value = 0;
453 goto Cleanup;
454 }
455
456 /* Get the object reference, store it, and remove our reference */
457
458 Status = AcpiExGetObjectReference (Operand[0],
459 &ReturnDesc2, WalkState);
460 if (ACPI_FAILURE (Status))
461 {
462 goto Cleanup;
463 }
464
465 Status = AcpiExStore (ReturnDesc2, Operand[1], WalkState);
466 AcpiUtRemoveReference (ReturnDesc2);
467
468 /* The object exists in the namespace, return TRUE */
469
470 ReturnDesc->Integer.Value = ACPI_UINT64_MAX;
471 goto Cleanup;
472
473
474 default:
475
476 /* No other opcodes get here */
477
478 break;
479 }
480 break;
481
482 case AML_STORE_OP: /* Store (Source, Target) */
483 /*
484 * A store operand is typically a number, string, buffer or lvalue
485 * Be careful about deleting the source object,
486 * since the object itself may have been stored.
487 */
488 Status = AcpiExStore (Operand[0], Operand[1], WalkState);
489 if (ACPI_FAILURE (Status))
490 {
491 return_ACPI_STATUS (Status);
492 }
493
494 /* It is possible that the Store already produced a return object */
495
496 if (!WalkState->ResultObj)
497 {
498 /*
499 * Normally, we would remove a reference on the Operand[0]
500 * parameter; But since it is being used as the internal return
501 * object (meaning we would normally increment it), the two
502 * cancel out, and we simply don't do anything.
503 */
504 WalkState->ResultObj = Operand[0];
505 WalkState->Operands[0] = NULL; /* Prevent deletion */
506 }
507 return_ACPI_STATUS (Status);
508
509 /*
510 * ACPI 2.0 Opcodes
511 */
512 case AML_COPY_OP: /* Copy (Source, Target) */
513
514 Status = AcpiUtCopyIobjectToIobject (Operand[0], &ReturnDesc,
515 WalkState);
516 break;
517
518 case AML_TO_DECSTRING_OP: /* ToDecimalString (Data, Result) */
519
520 Status = AcpiExConvertToString (Operand[0], &ReturnDesc,
521 ACPI_EXPLICIT_CONVERT_DECIMAL);
522 if (ReturnDesc == Operand[0])
523 {
524 /* No conversion performed, add ref to handle return value */
525 AcpiUtAddReference (ReturnDesc);
526 }
527 break;
528
529 case AML_TO_HEXSTRING_OP: /* ToHexString (Data, Result) */
530
531 Status = AcpiExConvertToString (Operand[0], &ReturnDesc,
532 ACPI_EXPLICIT_CONVERT_HEX);
533 if (ReturnDesc == Operand[0])
534 {
535 /* No conversion performed, add ref to handle return value */
536 AcpiUtAddReference (ReturnDesc);
537 }
538 break;
539
540 case AML_TO_BUFFER_OP: /* ToBuffer (Data, Result) */
541
542 Status = AcpiExConvertToBuffer (Operand[0], &ReturnDesc);
543 if (ReturnDesc == Operand[0])
544 {
545 /* No conversion performed, add ref to handle return value */
546 AcpiUtAddReference (ReturnDesc);
547 }
548 break;
549
550 case AML_TO_INTEGER_OP: /* ToInteger (Data, Result) */
551
552 Status = AcpiExConvertToInteger (Operand[0], &ReturnDesc,
553 ACPI_ANY_BASE);
554 if (ReturnDesc == Operand[0])
555 {
556 /* No conversion performed, add ref to handle return value */
557 AcpiUtAddReference (ReturnDesc);
558 }
559 break;
560
561 case AML_SHIFT_LEFT_BIT_OP: /* ShiftLeftBit (Source, BitNum) */
562 case AML_SHIFT_RIGHT_BIT_OP: /* ShiftRightBit (Source, BitNum) */
563
564 /* These are two obsolete opcodes */
565
566 ACPI_ERROR ((AE_INFO,
567 "%s is obsolete and not implemented",
568 AcpiPsGetOpcodeName (WalkState->Opcode)));
569 Status = AE_SUPPORT;
570 goto Cleanup;
571
572 default: /* Unknown opcode */
573
574 ACPI_ERROR ((AE_INFO, "Unknown AML opcode 0x%X",
575 WalkState->Opcode));
576 Status = AE_AML_BAD_OPCODE;
577 goto Cleanup;
578 }
579
580 if (ACPI_SUCCESS (Status))
581 {
582 /* Store the return value computed above into the target object */
583
584 Status = AcpiExStore (ReturnDesc, Operand[1], WalkState);
585 }
586
587
588 Cleanup:
589
590 /* Delete return object on error */
591
639 {
640 case AML_LNOT_OP: /* LNot (Operand) */
641
642 ReturnDesc = AcpiUtCreateIntegerObject ((UINT64) 0);
643 if (!ReturnDesc)
644 {
645 Status = AE_NO_MEMORY;
646 goto Cleanup;
647 }
648
649 /*
650 * Set result to ONES (TRUE) if Value == 0. Note:
651 * ReturnDesc->Integer.Value is initially == 0 (FALSE) from above.
652 */
653 if (!Operand[0]->Integer.Value)
654 {
655 ReturnDesc->Integer.Value = ACPI_UINT64_MAX;
656 }
657 break;
658
659 case AML_DECREMENT_OP: /* Decrement (Operand) */
660 case AML_INCREMENT_OP: /* Increment (Operand) */
661 /*
662 * Create a new integer. Can't just get the base integer and
663 * increment it because it may be an Arg or Field.
664 */
665 ReturnDesc = AcpiUtCreateInternalObject (ACPI_TYPE_INTEGER);
666 if (!ReturnDesc)
667 {
668 Status = AE_NO_MEMORY;
669 goto Cleanup;
670 }
671
672 /*
673 * Since we are expecting a Reference operand, it can be either a
674 * NS Node or an internal object.
675 */
676 TempDesc = Operand[0];
677 if (ACPI_GET_DESCRIPTOR_TYPE (TempDesc) == ACPI_DESC_TYPE_OPERAND)
678 {
679 /* Internal reference object - prevent deletion */
680
705 if (WalkState->Opcode == AML_INCREMENT_OP)
706 {
707 ReturnDesc->Integer.Value = TempDesc->Integer.Value +1;
708 }
709 else
710 {
711 ReturnDesc->Integer.Value = TempDesc->Integer.Value -1;
712 }
713
714 /* Finished with this Integer object */
715
716 AcpiUtRemoveReference (TempDesc);
717
718 /*
719 * Store the result back (indirectly) through the original
720 * Reference object
721 */
722 Status = AcpiExStore (ReturnDesc, Operand[0], WalkState);
723 break;
724
725 case AML_TYPE_OP: /* ObjectType (SourceObject) */
726 /*
727 * Note: The operand is not resolved at this point because we want to
728 * get the associated object, not its value. For example, we don't
729 * want to resolve a FieldUnit to its value, we want the actual
730 * FieldUnit object.
731 */
732
733 /* Get the type of the base object */
734
735 Status = AcpiExResolveMultiple (WalkState, Operand[0], &Type, NULL);
736 if (ACPI_FAILURE (Status))
737 {
738 goto Cleanup;
739 }
740
741 /* Allocate a descriptor to hold the type. */
742
743 ReturnDesc = AcpiUtCreateIntegerObject ((UINT64) Type);
744 if (!ReturnDesc)
745 {
746 Status = AE_NO_MEMORY;
747 goto Cleanup;
748 }
749 break;
750
751 case AML_SIZE_OF_OP: /* SizeOf (SourceObject) */
752 /*
753 * Note: The operand is not resolved at this point because we want to
754 * get the associated object, not its value.
755 */
756
757 /* Get the base object */
758
759 Status = AcpiExResolveMultiple (WalkState,
760 Operand[0], &Type, &TempDesc);
761 if (ACPI_FAILURE (Status))
762 {
763 goto Cleanup;
764 }
765
766 /*
767 * The type of the base object must be integer, buffer, string, or
768 * package. All others are not supported.
769 *
770 * NOTE: Integer is not specifically supported by the ACPI spec,
771 * but is supported implicitly via implicit operand conversion.
772 * rather than bother with conversion, we just use the byte width
773 * global (4 or 8 bytes).
774 */
775 switch (Type)
776 {
777 case ACPI_TYPE_INTEGER:
778
779 Value = AcpiGbl_IntegerByteWidth;
780 break;
781
782 case ACPI_TYPE_STRING:
783
784 Value = TempDesc->String.Length;
785 break;
786
787 case ACPI_TYPE_BUFFER:
788
789 /* Buffer arguments may not be evaluated at this point */
790
791 Status = AcpiDsGetBufferArguments (TempDesc);
792 Value = TempDesc->Buffer.Length;
793 break;
794
795 case ACPI_TYPE_PACKAGE:
796
797 /* Package arguments may not be evaluated at this point */
798
799 Status = AcpiDsGetPackageArguments (TempDesc);
800 Value = TempDesc->Package.Count;
801 break;
802
803 default:
804
805 ACPI_ERROR ((AE_INFO,
806 "Operand must be Buffer/Integer/String/Package - found type %s",
807 AcpiUtGetTypeName (Type)));
808 Status = AE_AML_OPERAND_TYPE;
809 goto Cleanup;
810 }
811
812 if (ACPI_FAILURE (Status))
813 {
814 goto Cleanup;
815 }
816
817 /*
818 * Now that we have the size of the object, create a result
819 * object to hold the value
820 */
821 ReturnDesc = AcpiUtCreateIntegerObject (Value);
822 if (!ReturnDesc)
823 {
824 Status = AE_NO_MEMORY;
892 Operand[0] = TempDesc;
893 break;
894
895 case ACPI_REFCLASS_REFOF:
896
897 /* Get the object to which the reference refers */
898
899 TempDesc = Operand[0]->Reference.Object;
900 AcpiUtRemoveReference (Operand[0]);
901 Operand[0] = TempDesc;
902 break;
903
904 default:
905
906 /* Must be an Index op - handled below */
907 break;
908 }
909 break;
910
911 case ACPI_TYPE_STRING:
912
913 break;
914
915 default:
916
917 Status = AE_AML_OPERAND_TYPE;
918 goto Cleanup;
919 }
920 }
921
922 if (ACPI_GET_DESCRIPTOR_TYPE (Operand[0]) != ACPI_DESC_TYPE_NAMED)
923 {
924 if ((Operand[0])->Common.Type == ACPI_TYPE_STRING)
925 {
926 /*
927 * This is a DerefOf (String). The string is a reference
928 * to a named ACPI object.
929 *
930 * 1) Find the owning Node
931 * 2) Dereference the node to an actual object. Could be a
932 * Field, so we need to resolve the node to a value.
933 */
934 Status = AcpiNsGetNode (WalkState->ScopeInfo->Scope.Node,
935 Operand[0]->String.Pointer,
936 ACPI_NS_SEARCH_PARENT,
955 {
956 /*
957 * This is a DerefOf (ObjectReference)
958 * Get the actual object from the Node (This is the dereference).
959 * This case may only happen when a LocalX or ArgX is
960 * dereferenced above.
961 */
962 ReturnDesc = AcpiNsGetAttachedObject (
963 (ACPI_NAMESPACE_NODE *) Operand[0]);
964 AcpiUtAddReference (ReturnDesc);
965 }
966 else
967 {
968 /*
969 * This must be a reference object produced by either the
970 * Index() or RefOf() operator
971 */
972 switch (Operand[0]->Reference.Class)
973 {
974 case ACPI_REFCLASS_INDEX:
975 /*
976 * The target type for the Index operator must be
977 * either a Buffer or a Package
978 */
979 switch (Operand[0]->Reference.TargetType)
980 {
981 case ACPI_TYPE_BUFFER_FIELD:
982
983 TempDesc = Operand[0]->Reference.Object;
984
985 /*
986 * Create a new object that contains one element of the
987 * buffer -- the element pointed to by the index.
988 *
989 * NOTE: index into a buffer is NOT a pointer to a
990 * sub-buffer of the main buffer, it is only a pointer to a
991 * single element (byte) of the buffer!
992 *
993 * Since we are returning the value of the buffer at the
994 * indexed location, we don't need to add an additional
995 * reference to the buffer itself.
996 */
997 ReturnDesc = AcpiUtCreateIntegerObject ((UINT64)
998 TempDesc->Buffer.Pointer[Operand[0]->Reference.Value]);
999 if (!ReturnDesc)
1000 {
1001 Status = AE_NO_MEMORY;
1002 goto Cleanup;
1003 }
1004 break;
1005
1006 case ACPI_TYPE_PACKAGE:
1007 /*
1008 * Return the referenced element of the package. We must
1009 * add another reference to the referenced object, however.
1010 */
1011 ReturnDesc = *(Operand[0]->Reference.Where);
1012 if (!ReturnDesc)
1013 {
1014 /*
1015 * Element is NULL, do not allow the dereference.
1016 * This provides compatibility with other ACPI
1017 * implementations.
1018 */
1019 return_ACPI_STATUS (AE_AML_UNINITIALIZED_ELEMENT);
1020 }
1021
1022 AcpiUtAddReference (ReturnDesc);
1023 break;
1024
1025 default:
1026
1027 ACPI_ERROR ((AE_INFO,
1028 "Unknown Index TargetType 0x%X in reference object %p",
1029 Operand[0]->Reference.TargetType, Operand[0]));
1030 Status = AE_AML_OPERAND_TYPE;
1031 goto Cleanup;
1032 }
1033 break;
1034
1035 case ACPI_REFCLASS_REFOF:
1036
1037 ReturnDesc = Operand[0]->Reference.Object;
1038
1039 if (ACPI_GET_DESCRIPTOR_TYPE (ReturnDesc) ==
1040 ACPI_DESC_TYPE_NAMED)
1041 {
1042 ReturnDesc = AcpiNsGetAttachedObject (
1043 (ACPI_NAMESPACE_NODE *) ReturnDesc);
1044 if (!ReturnDesc)
1045 {
1046 break;
1047 }
1048
1049 /*
1050 * June 2013:
1051 * BufferFields/FieldUnits require additional resolution
1052 */
1053 switch (ReturnDesc->Common.Type)
1054 {
1055 case ACPI_TYPE_BUFFER_FIELD:
1056 case ACPI_TYPE_LOCAL_REGION_FIELD:
1057 case ACPI_TYPE_LOCAL_BANK_FIELD:
1058 case ACPI_TYPE_LOCAL_INDEX_FIELD:
1059
1060 Status = AcpiExReadDataFromField (WalkState,
1061 ReturnDesc, &TempDesc);
1062 if (ACPI_FAILURE (Status))
1063 {
1064 goto Cleanup;
1065 }
1066
1067 ReturnDesc = TempDesc;
1068 break;
1069
1070 default:
1071
1072 /* Add another reference to the object */
1073
1074 AcpiUtAddReference (ReturnDesc);
1075 break;
1076 }
1077 }
1078 break;
1079
1080 default:
1081
1082 ACPI_ERROR ((AE_INFO,
1083 "Unknown class in reference(%p) - 0x%2.2X",
1084 Operand[0], Operand[0]->Reference.Class));
1085
1086 Status = AE_TYPE;
1087 goto Cleanup;
1088 }
1089 }
1090 break;
1091
1092 default:
1093
1094 ACPI_ERROR ((AE_INFO, "Unknown AML opcode 0x%X",
1095 WalkState->Opcode));
1096 Status = AE_AML_BAD_OPCODE;
1097 goto Cleanup;
1098 }
1099
1100
1101 Cleanup:
1102
1103 /* Delete return object on error */
1104
1105 if (ACPI_FAILURE (Status))
1106 {
1107 AcpiUtRemoveReference (ReturnDesc);
1108 }
1109
1110 /* Save return object on success */
1111
1112 else
1113 {
1114 WalkState->ResultObj = ReturnDesc;
1115 }
1116
1117 return_ACPI_STATUS (Status);
1118 }
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