1 /******************************************************************************
2 *
3 * Module Name: exoparg1 - AML execution - opcodes with 1 argument
4 *
5 *****************************************************************************/
6
7 /******************************************************************************
8 *
9 * 1. Copyright Notice
10 *
11 * Some or all of this work - Copyright (c) 1999 - 2018, Intel Corp.
12 * All rights reserved.
13 *
14 * 2. License
15 *
16 * 2.1. This is your license from Intel Corp. under its intellectual property
17 * rights. You may have additional license terms from the party that provided
18 * you this software, covering your right to use that party's intellectual
19 * property rights.
20 *
21 * 2.2. Intel grants, free of charge, to any person ("Licensee") obtaining a
22 * copy of the source code appearing in this file ("Covered Code") an
23 * irrevocable, perpetual, worldwide license under Intel's copyrights in the
24 * base code distributed originally by Intel ("Original Intel Code") to copy,
25 * make derivatives, distribute, use and display any portion of the Covered
26 * Code in any form, with the right to sublicense such rights; and
27 *
28 * 2.3. Intel grants Licensee a non-exclusive and non-transferable patent
29 * license (with the right to sublicense), under only those claims of Intel
30 * patents that are infringed by the Original Intel Code, to make, use, sell,
31 * offer to sell, and import the Covered Code and derivative works thereof
32 * solely to the minimum extent necessary to exercise the above copyright
33 * license, and in no event shall the patent license extend to any additions
34 * to or modifications of the Original Intel Code. No other license or right
35 * is granted directly or by implication, estoppel or otherwise;
36 *
37 * The above copyright and patent license is granted only if the following
38 * conditions are met:
39 *
40 * 3. Conditions
41 *
42 * 3.1. Redistribution of Source with Rights to Further Distribute Source.
43 * Redistribution of source code of any substantial portion of the Covered
44 * Code or modification with rights to further distribute source must include
45 * the above Copyright Notice, the above License, this list of Conditions,
46 * and the following Disclaimer and Export Compliance provision. In addition,
47 * Licensee must cause all Covered Code to which Licensee contributes to
48 * contain a file documenting the changes Licensee made to create that Covered
49 * Code and the date of any change. Licensee must include in that file the
50 * documentation of any changes made by any predecessor Licensee. Licensee
51 * must include a prominent statement that the modification is derived,
52 * directly or indirectly, from Original Intel Code.
53 *
54 * 3.2. Redistribution of Source with no Rights to Further Distribute Source.
55 * Redistribution of source code of any substantial portion of the Covered
56 * Code or modification without rights to further distribute source must
57 * include the following Disclaimer and Export Compliance provision in the
58 * documentation and/or other materials provided with distribution. In
59 * addition, Licensee may not authorize further sublicense of source of any
60 * portion of the Covered Code, and must include terms to the effect that the
61 * license from Licensee to its licensee is limited to the intellectual
62 * property embodied in the software Licensee provides to its licensee, and
63 * not to intellectual property embodied in modifications its licensee may
64 * make.
65 *
66 * 3.3. Redistribution of Executable. Redistribution in executable form of any
67 * substantial portion of the Covered Code or modification must reproduce the
68 * above Copyright Notice, and the following Disclaimer and Export Compliance
69 * provision in the documentation and/or other materials provided with the
70 * distribution.
71 *
72 * 3.4. Intel retains all right, title, and interest in and to the Original
73 * Intel Code.
74 *
75 * 3.5. Neither the name Intel nor any other trademark owned or controlled by
76 * Intel shall be used in advertising or otherwise to promote the sale, use or
77 * other dealings in products derived from or relating to the Covered Code
78 * without prior written authorization from Intel.
79 *
80 * 4. Disclaimer and Export Compliance
81 *
82 * 4.1. INTEL MAKES NO WARRANTY OF ANY KIND REGARDING ANY SOFTWARE PROVIDED
83 * HERE. ANY SOFTWARE ORIGINATING FROM INTEL OR DERIVED FROM INTEL SOFTWARE
84 * IS PROVIDED "AS IS," AND INTEL WILL NOT PROVIDE ANY SUPPORT, ASSISTANCE,
85 * INSTALLATION, TRAINING OR OTHER SERVICES. INTEL WILL NOT PROVIDE ANY
86 * UPDATES, ENHANCEMENTS OR EXTENSIONS. INTEL SPECIFICALLY DISCLAIMS ANY
87 * IMPLIED WARRANTIES OF MERCHANTABILITY, NONINFRINGEMENT AND FITNESS FOR A
88 * PARTICULAR PURPOSE.
89 *
90 * 4.2. IN NO EVENT SHALL INTEL HAVE ANY LIABILITY TO LICENSEE, ITS LICENSEES
91 * OR ANY OTHER THIRD PARTY, FOR ANY LOST PROFITS, LOST DATA, LOSS OF USE OR
92 * COSTS OF PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES, OR FOR ANY INDIRECT,
93 * SPECIAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THIS AGREEMENT, UNDER ANY
94 * CAUSE OF ACTION OR THEORY OF LIABILITY, AND IRRESPECTIVE OF WHETHER INTEL
95 * HAS ADVANCE NOTICE OF THE POSSIBILITY OF SUCH DAMAGES. THESE LIMITATIONS
96 * SHALL APPLY NOTWITHSTANDING THE FAILURE OF THE ESSENTIAL PURPOSE OF ANY
97 * LIMITED REMEDY.
98 *
99 * 4.3. Licensee shall not export, either directly or indirectly, any of this
100 * software or system incorporating such software without first obtaining any
101 * required license or other approval from the U. S. Department of Commerce or
102 * any other agency or department of the United States Government. In the
103 * event Licensee exports any such software from the United States or
104 * re-exports any such software from a foreign destination, Licensee shall
105 * ensure that the distribution and export/re-export of the software is in
106 * compliance with all laws, regulations, orders, or other restrictions of the
107 * U.S. Export Administration Regulations. Licensee agrees that neither it nor
108 * any of its subsidiaries will export/re-export any technical data, process,
109 * software, or service, directly or indirectly, to any country for which the
110 * United States government or any agency thereof requires an export license,
111 * other governmental approval, or letter of assurance, without first obtaining
112 * such license, approval or letter.
113 *
114 *****************************************************************************
115 *
116 * Alternatively, you may choose to be licensed under the terms of the
117 * following license:
118 *
119 * Redistribution and use in source and binary forms, with or without
120 * modification, are permitted provided that the following conditions
121 * are met:
122 * 1. Redistributions of source code must retain the above copyright
123 * notice, this list of conditions, and the following disclaimer,
124 * without modification.
125 * 2. Redistributions in binary form must reproduce at minimum a disclaimer
126 * substantially similar to the "NO WARRANTY" disclaimer below
127 * ("Disclaimer") and any redistribution must be conditioned upon
128 * including a substantially similar Disclaimer requirement for further
129 * binary redistribution.
130 * 3. Neither the names of the above-listed copyright holders nor the names
131 * of any contributors may be used to endorse or promote products derived
132 * from this software without specific prior written permission.
133 *
134 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
135 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
136 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
137 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
138 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
139 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
140 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
141 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
142 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
143 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
144 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
145 *
146 * Alternatively, you may choose to be licensed under the terms of the
147 * GNU General Public License ("GPL") version 2 as published by the Free
148 * Software Foundation.
149 *
150 *****************************************************************************/
151
152 #include "acpi.h"
153 #include "accommon.h"
154 #include "acparser.h"
155 #include "acdispat.h"
156 #include "acinterp.h"
157 #include "amlcode.h"
158 #include "acnamesp.h"
159
160
161 #define _COMPONENT ACPI_EXECUTER
162 ACPI_MODULE_NAME ("exoparg1")
163
164
165 /*!
166 * Naming convention for AML interpreter execution routines.
167 *
168 * The routines that begin execution of AML opcodes are named with a common
169 * convention based upon the number of arguments, the number of target operands,
170 * and whether or not a value is returned:
171 *
172 * AcpiExOpcode_xA_yT_zR
173 *
174 * Where:
175 *
176 * xA - ARGUMENTS: The number of arguments (input operands) that are
177 * required for this opcode type (0 through 6 args).
178 * yT - TARGETS: The number of targets (output operands) that are required
179 * for this opcode type (0, 1, or 2 targets).
180 * zR - RETURN VALUE: Indicates whether this opcode type returns a value
181 * as the function return (0 or 1).
182 *
183 * The AcpiExOpcode* functions are called via the Dispatcher component with
184 * fully resolved operands.
185 !*/
186
187 /*******************************************************************************
188 *
189 * FUNCTION: AcpiExOpcode_0A_0T_1R
190 *
191 * PARAMETERS: WalkState - Current state (contains AML opcode)
192 *
193 * RETURN: Status
194 *
195 * DESCRIPTION: Execute operator with no operands, one return value
196 *
197 ******************************************************************************/
198
199 ACPI_STATUS
AcpiExOpcode_0A_0T_1R(ACPI_WALK_STATE * WalkState)200 AcpiExOpcode_0A_0T_1R (
201 ACPI_WALK_STATE *WalkState)
202 {
203 ACPI_STATUS Status = AE_OK;
204 ACPI_OPERAND_OBJECT *ReturnDesc = NULL;
205
206
207 ACPI_FUNCTION_TRACE_STR (ExOpcode_0A_0T_1R,
208 AcpiPsGetOpcodeName (WalkState->Opcode));
209
210
211 /* Examine the AML opcode */
212
213 switch (WalkState->Opcode)
214 {
215 case AML_TIMER_OP: /* Timer () */
216
217 /* Create a return object of type Integer */
218
219 ReturnDesc = AcpiUtCreateIntegerObject (AcpiOsGetTimer ());
220 if (!ReturnDesc)
221 {
222 Status = AE_NO_MEMORY;
223 goto Cleanup;
224 }
225 break;
226
227 default: /* Unknown opcode */
228
229 ACPI_ERROR ((AE_INFO, "Unknown AML opcode 0x%X",
230 WalkState->Opcode));
231 Status = AE_AML_BAD_OPCODE;
232 break;
233 }
234
235 Cleanup:
236
237 /* Delete return object on error */
238
239 if ((ACPI_FAILURE (Status)) || WalkState->ResultObj)
240 {
241 AcpiUtRemoveReference (ReturnDesc);
242 WalkState->ResultObj = NULL;
243 }
244 else
245 {
246 /* Save the return value */
247
248 WalkState->ResultObj = ReturnDesc;
249 }
250
251 return_ACPI_STATUS (Status);
252 }
253
254
255 /*******************************************************************************
256 *
257 * FUNCTION: AcpiExOpcode_1A_0T_0R
258 *
259 * PARAMETERS: WalkState - Current state (contains AML opcode)
260 *
261 * RETURN: Status
262 *
263 * DESCRIPTION: Execute Type 1 monadic operator with numeric operand on
264 * object stack
265 *
266 ******************************************************************************/
267
268 ACPI_STATUS
AcpiExOpcode_1A_0T_0R(ACPI_WALK_STATE * WalkState)269 AcpiExOpcode_1A_0T_0R (
270 ACPI_WALK_STATE *WalkState)
271 {
272 ACPI_OPERAND_OBJECT **Operand = &WalkState->Operands[0];
273 ACPI_STATUS Status = AE_OK;
274
275
276 ACPI_FUNCTION_TRACE_STR (ExOpcode_1A_0T_0R,
277 AcpiPsGetOpcodeName (WalkState->Opcode));
278
279
280 /* Examine the AML opcode */
281
282 switch (WalkState->Opcode)
283 {
284 case AML_RELEASE_OP: /* Release (MutexObject) */
285
286 Status = AcpiExReleaseMutex (Operand[0], WalkState);
287 break;
288
289 case AML_RESET_OP: /* Reset (EventObject) */
290
291 Status = AcpiExSystemResetEvent (Operand[0]);
292 break;
293
294 case AML_SIGNAL_OP: /* Signal (EventObject) */
295
296 Status = AcpiExSystemSignalEvent (Operand[0]);
297 break;
298
299 case AML_SLEEP_OP: /* Sleep (MsecTime) */
300
301 Status = AcpiExSystemDoSleep (Operand[0]->Integer.Value);
302 break;
303
304 case AML_STALL_OP: /* Stall (UsecTime) */
305
306 Status = AcpiExSystemDoStall ((UINT32) Operand[0]->Integer.Value);
307 break;
308
309 case AML_UNLOAD_OP: /* Unload (Handle) */
310
311 Status = AcpiExUnloadTable (Operand[0]);
312 break;
313
314 default: /* Unknown opcode */
315
316 ACPI_ERROR ((AE_INFO, "Unknown AML opcode 0x%X",
317 WalkState->Opcode));
318 Status = AE_AML_BAD_OPCODE;
319 break;
320 }
321
322 return_ACPI_STATUS (Status);
323 }
324
325
326 /*******************************************************************************
327 *
328 * FUNCTION: AcpiExOpcode_1A_1T_0R
329 *
330 * PARAMETERS: WalkState - Current state (contains AML opcode)
331 *
332 * RETURN: Status
333 *
334 * DESCRIPTION: Execute opcode with one argument, one target, and no
335 * return value.
336 *
337 ******************************************************************************/
338
339 ACPI_STATUS
AcpiExOpcode_1A_1T_0R(ACPI_WALK_STATE * WalkState)340 AcpiExOpcode_1A_1T_0R (
341 ACPI_WALK_STATE *WalkState)
342 {
343 ACPI_STATUS Status = AE_OK;
344 ACPI_OPERAND_OBJECT **Operand = &WalkState->Operands[0];
345
346
347 ACPI_FUNCTION_TRACE_STR (ExOpcode_1A_1T_0R,
348 AcpiPsGetOpcodeName (WalkState->Opcode));
349
350
351 /* Examine the AML opcode */
352
353 switch (WalkState->Opcode)
354 {
355 case AML_LOAD_OP:
356
357 Status = AcpiExLoadOp (Operand[0], Operand[1], WalkState);
358 break;
359
360 default: /* Unknown opcode */
361
362 ACPI_ERROR ((AE_INFO, "Unknown AML opcode 0x%X",
363 WalkState->Opcode));
364 Status = AE_AML_BAD_OPCODE;
365 goto Cleanup;
366 }
367
368
369 Cleanup:
370
371 return_ACPI_STATUS (Status);
372 }
373
374
375 /*******************************************************************************
376 *
377 * FUNCTION: AcpiExOpcode_1A_1T_1R
378 *
379 * PARAMETERS: WalkState - Current state (contains AML opcode)
380 *
381 * RETURN: Status
382 *
383 * DESCRIPTION: Execute opcode with one argument, one target, and a
384 * return value.
385 *
386 ******************************************************************************/
387
388 ACPI_STATUS
AcpiExOpcode_1A_1T_1R(ACPI_WALK_STATE * WalkState)389 AcpiExOpcode_1A_1T_1R (
390 ACPI_WALK_STATE *WalkState)
391 {
392 ACPI_STATUS Status = AE_OK;
393 ACPI_OPERAND_OBJECT **Operand = &WalkState->Operands[0];
394 ACPI_OPERAND_OBJECT *ReturnDesc = NULL;
395 ACPI_OPERAND_OBJECT *ReturnDesc2 = NULL;
396 UINT32 Temp32;
397 UINT32 i;
398 UINT64 PowerOfTen;
399 UINT64 Digit;
400
401
402 ACPI_FUNCTION_TRACE_STR (ExOpcode_1A_1T_1R,
403 AcpiPsGetOpcodeName (WalkState->Opcode));
404
405
406 /* Examine the AML opcode */
407
408 switch (WalkState->Opcode)
409 {
410 case AML_BIT_NOT_OP:
411 case AML_FIND_SET_LEFT_BIT_OP:
412 case AML_FIND_SET_RIGHT_BIT_OP:
413 case AML_FROM_BCD_OP:
414 case AML_TO_BCD_OP:
415 case AML_CONDITIONAL_REF_OF_OP:
416
417 /* Create a return object of type Integer for these opcodes */
418
419 ReturnDesc = AcpiUtCreateInternalObject (ACPI_TYPE_INTEGER);
420 if (!ReturnDesc)
421 {
422 Status = AE_NO_MEMORY;
423 goto Cleanup;
424 }
425
426 switch (WalkState->Opcode)
427 {
428 case AML_BIT_NOT_OP: /* Not (Operand, Result) */
429
430 ReturnDesc->Integer.Value = ~Operand[0]->Integer.Value;
431 break;
432
433 case AML_FIND_SET_LEFT_BIT_OP: /* FindSetLeftBit (Operand, Result) */
434
435 ReturnDesc->Integer.Value = Operand[0]->Integer.Value;
436
437 /*
438 * Acpi specification describes Integer type as a little
439 * endian unsigned value, so this boundary condition is valid.
440 */
441 for (Temp32 = 0; ReturnDesc->Integer.Value &&
442 Temp32 < ACPI_INTEGER_BIT_SIZE; ++Temp32)
443 {
444 ReturnDesc->Integer.Value >>= 1;
445 }
446
447 ReturnDesc->Integer.Value = Temp32;
448 break;
449
450 case AML_FIND_SET_RIGHT_BIT_OP: /* FindSetRightBit (Operand, Result) */
451
452 ReturnDesc->Integer.Value = Operand[0]->Integer.Value;
453
454 /*
455 * The Acpi specification describes Integer type as a little
456 * endian unsigned value, so this boundary condition is valid.
457 */
458 for (Temp32 = 0; ReturnDesc->Integer.Value &&
459 Temp32 < ACPI_INTEGER_BIT_SIZE; ++Temp32)
460 {
461 ReturnDesc->Integer.Value <<= 1;
462 }
463
464 /* Since the bit position is one-based, subtract from 33 (65) */
465
466 ReturnDesc->Integer.Value =
467 Temp32 == 0 ? 0 : (ACPI_INTEGER_BIT_SIZE + 1) - Temp32;
468 break;
469
470 case AML_FROM_BCD_OP: /* FromBcd (BCDValue, Result) */
471 /*
472 * The 64-bit ACPI integer can hold 16 4-bit BCD characters
473 * (if table is 32-bit, integer can hold 8 BCD characters)
474 * Convert each 4-bit BCD value
475 */
476 PowerOfTen = 1;
477 ReturnDesc->Integer.Value = 0;
478 Digit = Operand[0]->Integer.Value;
479
480 /* Convert each BCD digit (each is one nybble wide) */
481
482 for (i = 0; (i < AcpiGbl_IntegerNybbleWidth) && (Digit > 0); i++)
483 {
484 /* Get the least significant 4-bit BCD digit */
485
486 Temp32 = ((UINT32) Digit) & 0xF;
487
488 /* Check the range of the digit */
489
490 if (Temp32 > 9)
491 {
492 ACPI_ERROR ((AE_INFO,
493 "BCD digit too large (not decimal): 0x%X",
494 Temp32));
495
496 Status = AE_AML_NUMERIC_OVERFLOW;
497 goto Cleanup;
498 }
499
500 /* Sum the digit into the result with the current power of 10 */
501
502 ReturnDesc->Integer.Value +=
503 (((UINT64) Temp32) * PowerOfTen);
504
505 /* Shift to next BCD digit */
506
507 Digit >>= 4;
508
509 /* Next power of 10 */
510
511 PowerOfTen *= 10;
512 }
513 break;
514
515 case AML_TO_BCD_OP: /* ToBcd (Operand, Result) */
516
517 ReturnDesc->Integer.Value = 0;
518 Digit = Operand[0]->Integer.Value;
519
520 /* Each BCD digit is one nybble wide */
521
522 for (i = 0; (i < AcpiGbl_IntegerNybbleWidth) && (Digit > 0); i++)
523 {
524 (void) AcpiUtShortDivide (Digit, 10, &Digit, &Temp32);
525
526 /*
527 * Insert the BCD digit that resides in the
528 * remainder from above
529 */
530 ReturnDesc->Integer.Value |=
531 (((UINT64) Temp32) << ACPI_MUL_4 (i));
532 }
533
534 /* Overflow if there is any data left in Digit */
535
536 if (Digit > 0)
537 {
538 ACPI_ERROR ((AE_INFO,
539 "Integer too large to convert to BCD: 0x%8.8X%8.8X",
540 ACPI_FORMAT_UINT64 (Operand[0]->Integer.Value)));
541 Status = AE_AML_NUMERIC_OVERFLOW;
542 goto Cleanup;
543 }
544 break;
545
546 case AML_CONDITIONAL_REF_OF_OP: /* CondRefOf (SourceObject, Result) */
547 /*
548 * This op is a little strange because the internal return value is
549 * different than the return value stored in the result descriptor
550 * (There are really two return values)
551 */
552 if ((ACPI_NAMESPACE_NODE *) Operand[0] == AcpiGbl_RootNode)
553 {
554 /*
555 * This means that the object does not exist in the namespace,
556 * return FALSE
557 */
558 ReturnDesc->Integer.Value = 0;
559 goto Cleanup;
560 }
561
562 /* Get the object reference, store it, and remove our reference */
563
564 Status = AcpiExGetObjectReference (Operand[0],
565 &ReturnDesc2, WalkState);
566 if (ACPI_FAILURE (Status))
567 {
568 goto Cleanup;
569 }
570
571 Status = AcpiExStore (ReturnDesc2, Operand[1], WalkState);
572 AcpiUtRemoveReference (ReturnDesc2);
573
574 /* The object exists in the namespace, return TRUE */
575
576 ReturnDesc->Integer.Value = ACPI_UINT64_MAX;
577 goto Cleanup;
578
579
580 default:
581
582 /* No other opcodes get here */
583
584 break;
585 }
586 break;
587
588 case AML_STORE_OP: /* Store (Source, Target) */
589 /*
590 * A store operand is typically a number, string, buffer or lvalue
591 * Be careful about deleting the source object,
592 * since the object itself may have been stored.
593 */
594 Status = AcpiExStore (Operand[0], Operand[1], WalkState);
595 if (ACPI_FAILURE (Status))
596 {
597 return_ACPI_STATUS (Status);
598 }
599
600 /* It is possible that the Store already produced a return object */
601
602 if (!WalkState->ResultObj)
603 {
604 /*
605 * Normally, we would remove a reference on the Operand[0]
606 * parameter; But since it is being used as the internal return
607 * object (meaning we would normally increment it), the two
608 * cancel out, and we simply don't do anything.
609 */
610 WalkState->ResultObj = Operand[0];
611 WalkState->Operands[0] = NULL; /* Prevent deletion */
612 }
613 return_ACPI_STATUS (Status);
614
615 /*
616 * ACPI 2.0 Opcodes
617 */
618 case AML_COPY_OBJECT_OP: /* CopyObject (Source, Target) */
619
620 Status = AcpiUtCopyIobjectToIobject (
621 Operand[0], &ReturnDesc, WalkState);
622 break;
623
624 case AML_TO_DECIMAL_STRING_OP: /* ToDecimalString (Data, Result) */
625
626 Status = AcpiExConvertToString (
627 Operand[0], &ReturnDesc, ACPI_EXPLICIT_CONVERT_DECIMAL);
628 if (ReturnDesc == Operand[0])
629 {
630 /* No conversion performed, add ref to handle return value */
631
632 AcpiUtAddReference (ReturnDesc);
633 }
634 break;
635
636 case AML_TO_HEX_STRING_OP: /* ToHexString (Data, Result) */
637
638 Status = AcpiExConvertToString (
639 Operand[0], &ReturnDesc, ACPI_EXPLICIT_CONVERT_HEX);
640 if (ReturnDesc == Operand[0])
641 {
642 /* No conversion performed, add ref to handle return value */
643
644 AcpiUtAddReference (ReturnDesc);
645 }
646 break;
647
648 case AML_TO_BUFFER_OP: /* ToBuffer (Data, Result) */
649
650 Status = AcpiExConvertToBuffer (Operand[0], &ReturnDesc);
651 if (ReturnDesc == Operand[0])
652 {
653 /* No conversion performed, add ref to handle return value */
654
655 AcpiUtAddReference (ReturnDesc);
656 }
657 break;
658
659 case AML_TO_INTEGER_OP: /* ToInteger (Data, Result) */
660
661 /* Perform "explicit" conversion */
662
663 Status = AcpiExConvertToInteger (Operand[0], &ReturnDesc, 0);
664 if (ReturnDesc == Operand[0])
665 {
666 /* No conversion performed, add ref to handle return value */
667
668 AcpiUtAddReference (ReturnDesc);
669 }
670 break;
671
672 case AML_SHIFT_LEFT_BIT_OP: /* ShiftLeftBit (Source, BitNum) */
673 case AML_SHIFT_RIGHT_BIT_OP: /* ShiftRightBit (Source, BitNum) */
674
675 /* These are two obsolete opcodes */
676
677 ACPI_ERROR ((AE_INFO,
678 "%s is obsolete and not implemented",
679 AcpiPsGetOpcodeName (WalkState->Opcode)));
680 Status = AE_SUPPORT;
681 goto Cleanup;
682
683 default: /* Unknown opcode */
684
685 ACPI_ERROR ((AE_INFO, "Unknown AML opcode 0x%X",
686 WalkState->Opcode));
687 Status = AE_AML_BAD_OPCODE;
688 goto Cleanup;
689 }
690
691 if (ACPI_SUCCESS (Status))
692 {
693 /* Store the return value computed above into the target object */
694
695 Status = AcpiExStore (ReturnDesc, Operand[1], WalkState);
696 }
697
698
699 Cleanup:
700
701 /* Delete return object on error */
702
703 if (ACPI_FAILURE (Status))
704 {
705 AcpiUtRemoveReference (ReturnDesc);
706 }
707
708 /* Save return object on success */
709
710 else if (!WalkState->ResultObj)
711 {
712 WalkState->ResultObj = ReturnDesc;
713 }
714
715 return_ACPI_STATUS (Status);
716 }
717
718
719 /*******************************************************************************
720 *
721 * FUNCTION: AcpiExOpcode_1A_0T_1R
722 *
723 * PARAMETERS: WalkState - Current state (contains AML opcode)
724 *
725 * RETURN: Status
726 *
727 * DESCRIPTION: Execute opcode with one argument, no target, and a return value
728 *
729 ******************************************************************************/
730
731 ACPI_STATUS
AcpiExOpcode_1A_0T_1R(ACPI_WALK_STATE * WalkState)732 AcpiExOpcode_1A_0T_1R (
733 ACPI_WALK_STATE *WalkState)
734 {
735 ACPI_OPERAND_OBJECT **Operand = &WalkState->Operands[0];
736 ACPI_OPERAND_OBJECT *TempDesc;
737 ACPI_OPERAND_OBJECT *ReturnDesc = NULL;
738 ACPI_STATUS Status = AE_OK;
739 UINT32 Type;
740 UINT64 Value;
741
742
743 ACPI_FUNCTION_TRACE_STR (ExOpcode_1A_0T_1R,
744 AcpiPsGetOpcodeName (WalkState->Opcode));
745
746
747 /* Examine the AML opcode */
748
749 switch (WalkState->Opcode)
750 {
751 case AML_LOGICAL_NOT_OP: /* LNot (Operand) */
752
753 ReturnDesc = AcpiUtCreateIntegerObject ((UINT64) 0);
754 if (!ReturnDesc)
755 {
756 Status = AE_NO_MEMORY;
757 goto Cleanup;
758 }
759
760 /*
761 * Set result to ONES (TRUE) if Value == 0. Note:
762 * ReturnDesc->Integer.Value is initially == 0 (FALSE) from above.
763 */
764 if (!Operand[0]->Integer.Value)
765 {
766 ReturnDesc->Integer.Value = ACPI_UINT64_MAX;
767 }
768 break;
769
770 case AML_DECREMENT_OP: /* Decrement (Operand) */
771 case AML_INCREMENT_OP: /* Increment (Operand) */
772 /*
773 * Create a new integer. Can't just get the base integer and
774 * increment it because it may be an Arg or Field.
775 */
776 ReturnDesc = AcpiUtCreateInternalObject (ACPI_TYPE_INTEGER);
777 if (!ReturnDesc)
778 {
779 Status = AE_NO_MEMORY;
780 goto Cleanup;
781 }
782
783 /*
784 * Since we are expecting a Reference operand, it can be either a
785 * NS Node or an internal object.
786 */
787 TempDesc = Operand[0];
788 if (ACPI_GET_DESCRIPTOR_TYPE (TempDesc) == ACPI_DESC_TYPE_OPERAND)
789 {
790 /* Internal reference object - prevent deletion */
791
792 AcpiUtAddReference (TempDesc);
793 }
794
795 /*
796 * Convert the Reference operand to an Integer (This removes a
797 * reference on the Operand[0] object)
798 *
799 * NOTE: We use LNOT_OP here in order to force resolution of the
800 * reference operand to an actual integer.
801 */
802 Status = AcpiExResolveOperands (AML_LOGICAL_NOT_OP,
803 &TempDesc, WalkState);
804 if (ACPI_FAILURE (Status))
805 {
806 ACPI_EXCEPTION ((AE_INFO, Status,
807 "While resolving operands for [%s]",
808 AcpiPsGetOpcodeName (WalkState->Opcode)));
809
810 goto Cleanup;
811 }
812
813 /*
814 * TempDesc is now guaranteed to be an Integer object --
815 * Perform the actual increment or decrement
816 */
817 if (WalkState->Opcode == AML_INCREMENT_OP)
818 {
819 ReturnDesc->Integer.Value = TempDesc->Integer.Value + 1;
820 }
821 else
822 {
823 ReturnDesc->Integer.Value = TempDesc->Integer.Value - 1;
824 }
825
826 /* Finished with this Integer object */
827
828 AcpiUtRemoveReference (TempDesc);
829
830 /*
831 * Store the result back (indirectly) through the original
832 * Reference object
833 */
834 Status = AcpiExStore (ReturnDesc, Operand[0], WalkState);
835 break;
836
837 case AML_OBJECT_TYPE_OP: /* ObjectType (SourceObject) */
838 /*
839 * Note: The operand is not resolved at this point because we want to
840 * get the associated object, not its value. For example, we don't
841 * want to resolve a FieldUnit to its value, we want the actual
842 * FieldUnit object.
843 */
844
845 /* Get the type of the base object */
846
847 Status = AcpiExResolveMultiple (WalkState, Operand[0], &Type, NULL);
848 if (ACPI_FAILURE (Status))
849 {
850 goto Cleanup;
851 }
852
853 /* Allocate a descriptor to hold the type. */
854
855 ReturnDesc = AcpiUtCreateIntegerObject ((UINT64) Type);
856 if (!ReturnDesc)
857 {
858 Status = AE_NO_MEMORY;
859 goto Cleanup;
860 }
861 break;
862
863 case AML_SIZE_OF_OP: /* SizeOf (SourceObject) */
864 /*
865 * Note: The operand is not resolved at this point because we want to
866 * get the associated object, not its value.
867 */
868
869 /* Get the base object */
870
871 Status = AcpiExResolveMultiple (
872 WalkState, Operand[0], &Type, &TempDesc);
873 if (ACPI_FAILURE (Status))
874 {
875 goto Cleanup;
876 }
877
878 /*
879 * The type of the base object must be integer, buffer, string, or
880 * package. All others are not supported.
881 *
882 * NOTE: Integer is not specifically supported by the ACPI spec,
883 * but is supported implicitly via implicit operand conversion.
884 * rather than bother with conversion, we just use the byte width
885 * global (4 or 8 bytes).
886 */
887 switch (Type)
888 {
889 case ACPI_TYPE_INTEGER:
890
891 Value = AcpiGbl_IntegerByteWidth;
892 break;
893
894 case ACPI_TYPE_STRING:
895
896 Value = TempDesc->String.Length;
897 break;
898
899 case ACPI_TYPE_BUFFER:
900
901 /* Buffer arguments may not be evaluated at this point */
902
903 Status = AcpiDsGetBufferArguments (TempDesc);
904 Value = TempDesc->Buffer.Length;
905 break;
906
907 case ACPI_TYPE_PACKAGE:
908
909 /* Package arguments may not be evaluated at this point */
910
911 Status = AcpiDsGetPackageArguments (TempDesc);
912 Value = TempDesc->Package.Count;
913 break;
914
915 default:
916
917 ACPI_ERROR ((AE_INFO,
918 "Operand must be Buffer/Integer/String/Package"
919 " - found type %s",
920 AcpiUtGetTypeName (Type)));
921
922 Status = AE_AML_OPERAND_TYPE;
923 goto Cleanup;
924 }
925
926 if (ACPI_FAILURE (Status))
927 {
928 goto Cleanup;
929 }
930
931 /*
932 * Now that we have the size of the object, create a result
933 * object to hold the value
934 */
935 ReturnDesc = AcpiUtCreateIntegerObject (Value);
936 if (!ReturnDesc)
937 {
938 Status = AE_NO_MEMORY;
939 goto Cleanup;
940 }
941 break;
942
943
944 case AML_REF_OF_OP: /* RefOf (SourceObject) */
945
946 Status = AcpiExGetObjectReference (
947 Operand[0], &ReturnDesc, WalkState);
948 if (ACPI_FAILURE (Status))
949 {
950 goto Cleanup;
951 }
952 break;
953
954
955 case AML_DEREF_OF_OP: /* DerefOf (ObjReference | String) */
956
957 /* Check for a method local or argument, or standalone String */
958
959 if (ACPI_GET_DESCRIPTOR_TYPE (Operand[0]) == ACPI_DESC_TYPE_NAMED)
960 {
961 TempDesc = AcpiNsGetAttachedObject (
962 (ACPI_NAMESPACE_NODE *) Operand[0]);
963 if (TempDesc &&
964 ((TempDesc->Common.Type == ACPI_TYPE_STRING) ||
965 (TempDesc->Common.Type == ACPI_TYPE_LOCAL_REFERENCE)))
966 {
967 Operand[0] = TempDesc;
968 AcpiUtAddReference (TempDesc);
969 }
970 else
971 {
972 Status = AE_AML_OPERAND_TYPE;
973 goto Cleanup;
974 }
975 }
976 else
977 {
978 switch ((Operand[0])->Common.Type)
979 {
980 case ACPI_TYPE_LOCAL_REFERENCE:
981 /*
982 * This is a DerefOf (LocalX | ArgX)
983 *
984 * Must resolve/dereference the local/arg reference first
985 */
986 switch (Operand[0]->Reference.Class)
987 {
988 case ACPI_REFCLASS_LOCAL:
989 case ACPI_REFCLASS_ARG:
990
991 /* Set Operand[0] to the value of the local/arg */
992
993 Status = AcpiDsMethodDataGetValue (
994 Operand[0]->Reference.Class,
995 Operand[0]->Reference.Value,
996 WalkState, &TempDesc);
997 if (ACPI_FAILURE (Status))
998 {
999 goto Cleanup;
1000 }
1001
1002 /*
1003 * Delete our reference to the input object and
1004 * point to the object just retrieved
1005 */
1006 AcpiUtRemoveReference (Operand[0]);
1007 Operand[0] = TempDesc;
1008 break;
1009
1010 case ACPI_REFCLASS_REFOF:
1011
1012 /* Get the object to which the reference refers */
1013
1014 TempDesc = Operand[0]->Reference.Object;
1015 AcpiUtRemoveReference (Operand[0]);
1016 Operand[0] = TempDesc;
1017 break;
1018
1019 default:
1020
1021 /* Must be an Index op - handled below */
1022 break;
1023 }
1024 break;
1025
1026 case ACPI_TYPE_STRING:
1027
1028 break;
1029
1030 default:
1031
1032 Status = AE_AML_OPERAND_TYPE;
1033 goto Cleanup;
1034 }
1035 }
1036
1037 if (ACPI_GET_DESCRIPTOR_TYPE (Operand[0]) != ACPI_DESC_TYPE_NAMED)
1038 {
1039 if ((Operand[0])->Common.Type == ACPI_TYPE_STRING)
1040 {
1041 /*
1042 * This is a DerefOf (String). The string is a reference
1043 * to a named ACPI object.
1044 *
1045 * 1) Find the owning Node
1046 * 2) Dereference the node to an actual object. Could be a
1047 * Field, so we need to resolve the node to a value.
1048 */
1049 Status = AcpiNsGetNodeUnlocked (WalkState->ScopeInfo->Scope.Node,
1050 Operand[0]->String.Pointer,
1051 ACPI_NS_SEARCH_PARENT,
1052 ACPI_CAST_INDIRECT_PTR (
1053 ACPI_NAMESPACE_NODE, &ReturnDesc));
1054 if (ACPI_FAILURE (Status))
1055 {
1056 goto Cleanup;
1057 }
1058
1059 Status = AcpiExResolveNodeToValue (
1060 ACPI_CAST_INDIRECT_PTR (
1061 ACPI_NAMESPACE_NODE, &ReturnDesc),
1062 WalkState);
1063 goto Cleanup;
1064 }
1065 }
1066
1067 /* Operand[0] may have changed from the code above */
1068
1069 if (ACPI_GET_DESCRIPTOR_TYPE (Operand[0]) == ACPI_DESC_TYPE_NAMED)
1070 {
1071 /*
1072 * This is a DerefOf (ObjectReference)
1073 * Get the actual object from the Node (This is the dereference).
1074 * This case may only happen when a LocalX or ArgX is
1075 * dereferenced above, or for references to device and
1076 * thermal objects.
1077 */
1078 switch (((ACPI_NAMESPACE_NODE *) Operand[0])->Type)
1079 {
1080 case ACPI_TYPE_DEVICE:
1081 case ACPI_TYPE_THERMAL:
1082
1083 /* These types have no node subobject, return the NS node */
1084
1085 ReturnDesc = Operand[0];
1086 break;
1087
1088 default:
1089 /* For most types, get the object attached to the node */
1090
1091 ReturnDesc = AcpiNsGetAttachedObject (
1092 (ACPI_NAMESPACE_NODE *) Operand[0]);
1093 AcpiUtAddReference (ReturnDesc);
1094 break;
1095 }
1096 }
1097 else
1098 {
1099 /*
1100 * This must be a reference object produced by either the
1101 * Index() or RefOf() operator
1102 */
1103 switch (Operand[0]->Reference.Class)
1104 {
1105 case ACPI_REFCLASS_INDEX:
1106 /*
1107 * The target type for the Index operator must be
1108 * either a Buffer or a Package
1109 */
1110 switch (Operand[0]->Reference.TargetType)
1111 {
1112 case ACPI_TYPE_BUFFER_FIELD:
1113
1114 TempDesc = Operand[0]->Reference.Object;
1115
1116 /*
1117 * Create a new object that contains one element of the
1118 * buffer -- the element pointed to by the index.
1119 *
1120 * NOTE: index into a buffer is NOT a pointer to a
1121 * sub-buffer of the main buffer, it is only a pointer to a
1122 * single element (byte) of the buffer!
1123 *
1124 * Since we are returning the value of the buffer at the
1125 * indexed location, we don't need to add an additional
1126 * reference to the buffer itself.
1127 */
1128 ReturnDesc = AcpiUtCreateIntegerObject ((UINT64)
1129 TempDesc->Buffer.Pointer[Operand[0]->Reference.Value]);
1130 if (!ReturnDesc)
1131 {
1132 Status = AE_NO_MEMORY;
1133 goto Cleanup;
1134 }
1135 break;
1136
1137 case ACPI_TYPE_PACKAGE:
1138 /*
1139 * Return the referenced element of the package. We must
1140 * add another reference to the referenced object, however.
1141 */
1142 ReturnDesc = *(Operand[0]->Reference.Where);
1143 if (!ReturnDesc)
1144 {
1145 /*
1146 * Element is NULL, do not allow the dereference.
1147 * This provides compatibility with other ACPI
1148 * implementations.
1149 */
1150 return_ACPI_STATUS (AE_AML_UNINITIALIZED_ELEMENT);
1151 }
1152
1153 AcpiUtAddReference (ReturnDesc);
1154 break;
1155
1156 default:
1157
1158 ACPI_ERROR ((AE_INFO,
1159 "Unknown Index TargetType 0x%X in reference object %p",
1160 Operand[0]->Reference.TargetType, Operand[0]));
1161
1162 Status = AE_AML_OPERAND_TYPE;
1163 goto Cleanup;
1164 }
1165 break;
1166
1167 case ACPI_REFCLASS_REFOF:
1168
1169 ReturnDesc = Operand[0]->Reference.Object;
1170
1171 if (ACPI_GET_DESCRIPTOR_TYPE (ReturnDesc) ==
1172 ACPI_DESC_TYPE_NAMED)
1173 {
1174 ReturnDesc = AcpiNsGetAttachedObject (
1175 (ACPI_NAMESPACE_NODE *) ReturnDesc);
1176 if (!ReturnDesc)
1177 {
1178 break;
1179 }
1180
1181 /*
1182 * June 2013:
1183 * BufferFields/FieldUnits require additional resolution
1184 */
1185 switch (ReturnDesc->Common.Type)
1186 {
1187 case ACPI_TYPE_BUFFER_FIELD:
1188 case ACPI_TYPE_LOCAL_REGION_FIELD:
1189 case ACPI_TYPE_LOCAL_BANK_FIELD:
1190 case ACPI_TYPE_LOCAL_INDEX_FIELD:
1191
1192 Status = AcpiExReadDataFromField (
1193 WalkState, ReturnDesc, &TempDesc);
1194 if (ACPI_FAILURE (Status))
1195 {
1196 goto Cleanup;
1197 }
1198
1199 ReturnDesc = TempDesc;
1200 break;
1201
1202 default:
1203
1204 /* Add another reference to the object */
1205
1206 AcpiUtAddReference (ReturnDesc);
1207 break;
1208 }
1209 }
1210 break;
1211
1212 default:
1213
1214 ACPI_ERROR ((AE_INFO,
1215 "Unknown class in reference(%p) - 0x%2.2X",
1216 Operand[0], Operand[0]->Reference.Class));
1217
1218 Status = AE_TYPE;
1219 goto Cleanup;
1220 }
1221 }
1222 break;
1223
1224 default:
1225
1226 ACPI_ERROR ((AE_INFO, "Unknown AML opcode 0x%X",
1227 WalkState->Opcode));
1228
1229 Status = AE_AML_BAD_OPCODE;
1230 goto Cleanup;
1231 }
1232
1233
1234 Cleanup:
1235
1236 /* Delete return object on error */
1237
1238 if (ACPI_FAILURE (Status))
1239 {
1240 AcpiUtRemoveReference (ReturnDesc);
1241 }
1242
1243 /* Save return object on success */
1244
1245 else
1246 {
1247 WalkState->ResultObj = ReturnDesc;
1248 }
1249
1250 return_ACPI_STATUS (Status);
1251 }
1252