1/******************************************************************************
2 *
3 * Module Name: exconvrt - Object conversion routines
4 * $Revision: 37 $
5 *
6 *****************************************************************************/
7
8/******************************************************************************
9 *
10 * 1. Copyright Notice
11 *
12 * Some or all of this work - Copyright (c) 1999 - 2002, Intel Corp.
13 * All rights reserved.
14 *
15 * 2. License
16 *
17 * 2.1. This is your license from Intel Corp. under its intellectual property
18 * rights. You may have additional license terms from the party that provided
19 * you this software, covering your right to use that party's intellectual
20 * property rights.
21 *
22 * 2.2. Intel grants, free of charge, to any person ("Licensee") obtaining a
23 * copy of the source code appearing in this file ("Covered Code") an
24 * irrevocable, perpetual, worldwide license under Intel's copyrights in the
25 * base code distributed originally by Intel ("Original Intel Code") to copy,
26 * make derivatives, distribute, use and display any portion of the Covered
27 * Code in any form, with the right to sublicense such rights; and
28 *
29 * 2.3. Intel grants Licensee a non-exclusive and non-transferable patent
30 * license (with the right to sublicense), under only those claims of Intel
31 * patents that are infringed by the Original Intel Code, to make, use, sell,
32 * offer to sell, and import the Covered Code and derivative works thereof
33 * solely to the minimum extent necessary to exercise the above copyright
34 * license, and in no event shall the patent license extend to any additions
35 * to or modifications of the Original Intel Code. No other license or right
36 * is granted directly or by implication, estoppel or otherwise;
37 *
38 * The above copyright and patent license is granted only if the following
39 * conditions are met:
40 *
41 * 3. Conditions
42 *
43 * 3.1. Redistribution of Source with Rights to Further Distribute Source.
44 * Redistribution of source code of any substantial portion of the Covered
45 * Code or modification with rights to further distribute source must include
46 * the above Copyright Notice, the above License, this list of Conditions,
47 * and the following Disclaimer and Export Compliance provision. In addition,
48 * Licensee must cause all Covered Code to which Licensee contributes to
49 * contain a file documenting the changes Licensee made to create that Covered
50 * Code and the date of any change. Licensee must include in that file the
51 * documentation of any changes made by any predecessor Licensee. Licensee
52 * must include a prominent statement that the modification is derived,
53 * directly or indirectly, from Original Intel Code.
54 *
55 * 3.2. Redistribution of Source with no Rights to Further Distribute Source.
56 * Redistribution of source code of any substantial portion of the Covered
57 * Code or modification without rights to further distribute source must
58 * include the following Disclaimer and Export Compliance provision in the
59 * documentation and/or other materials provided with distribution. In
60 * addition, Licensee may not authorize further sublicense of source of any
61 * portion of the Covered Code, and must include terms to the effect that the
62 * license from Licensee to its licensee is limited to the intellectual
63 * property embodied in the software Licensee provides to its licensee, and
64 * not to intellectual property embodied in modifications its licensee may
65 * make.
66 *
67 * 3.3. Redistribution of Executable. Redistribution in executable form of any
68 * substantial portion of the Covered Code or modification must reproduce the
69 * above Copyright Notice, and the following Disclaimer and Export Compliance
70 * provision in the documentation and/or other materials provided with the
71 * distribution.
72 *
73 * 3.4. Intel retains all right, title, and interest in and to the Original
74 * Intel Code.
75 *
76 * 3.5. Neither the name Intel nor any other trademark owned or controlled by
77 * Intel shall be used in advertising or otherwise to promote the sale, use or
78 * other dealings in products derived from or relating to the Covered Code
79 * without prior written authorization from Intel.
80 *
81 * 4. Disclaimer and Export Compliance
82 *
83 * 4.1. INTEL MAKES NO WARRANTY OF ANY KIND REGARDING ANY SOFTWARE PROVIDED
84 * HERE. ANY SOFTWARE ORIGINATING FROM INTEL OR DERIVED FROM INTEL SOFTWARE
85 * IS PROVIDED "AS IS," AND INTEL WILL NOT PROVIDE ANY SUPPORT, ASSISTANCE,
86 * INSTALLATION, TRAINING OR OTHER SERVICES. INTEL WILL NOT PROVIDE ANY
87 * UPDATES, ENHANCEMENTS OR EXTENSIONS. INTEL SPECIFICALLY DISCLAIMS ANY
88 * IMPLIED WARRANTIES OF MERCHANTABILITY, NONINFRINGEMENT AND FITNESS FOR A
89 * PARTICULAR PURPOSE.
90 *
91 * 4.2. IN NO EVENT SHALL INTEL HAVE ANY LIABILITY TO LICENSEE, ITS LICENSEES
92 * OR ANY OTHER THIRD PARTY, FOR ANY LOST PROFITS, LOST DATA, LOSS OF USE OR
93 * COSTS OF PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES, OR FOR ANY INDIRECT,
94 * SPECIAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THIS AGREEMENT, UNDER ANY
95 * CAUSE OF ACTION OR THEORY OF LIABILITY, AND IRRESPECTIVE OF WHETHER INTEL
96 * HAS ADVANCE NOTICE OF THE POSSIBILITY OF SUCH DAMAGES. THESE LIMITATIONS
97 * SHALL APPLY NOTWITHSTANDING THE FAILURE OF THE ESSENTIAL PURPOSE OF ANY
98 * LIMITED REMEDY.
99 *
100 * 4.3. Licensee shall not export, either directly or indirectly, any of this
101 * software or system incorporating such software without first obtaining any
102 * required license or other approval from the U. S. Department of Commerce or
103 * any other agency or department of the United States Government. In the
104 * event Licensee exports any such software from the United States or
105 * re-exports any such software from a foreign destination, Licensee shall
106 * ensure that the distribution and export/re-export of the software is in
107 * compliance with all laws, regulations, orders, or other restrictions of the
108 * U.S. Export Administration Regulations. Licensee agrees that neither it nor
109 * any of its subsidiaries will export/re-export any technical data, process,
110 * software, or service, directly or indirectly, to any country for which the
111 * United States government or any agency thereof requires an export license,
112 * other governmental approval, or letter of assurance, without first obtaining
113 * such license, approval or letter.
114 *
115 *****************************************************************************/
116
117
118#define __EXCONVRT_C__
119
120#include "acpi.h"
121#include "acinterp.h"
122#include "amlcode.h"
123
124
125#define _COMPONENT ACPI_EXECUTER
126 ACPI_MODULE_NAME ("exconvrt")
127
128
129/*******************************************************************************
130 *
131 * FUNCTION: AcpiExConvertToInteger
132 *
133 * PARAMETERS: *ObjDesc - Object to be converted. Must be an
134 * Integer, Buffer, or String
135 * WalkState - Current method state
136 *
137 * RETURN: Status
138 *
139 * DESCRIPTION: Convert an ACPI Object to an integer.
140 *
141 ******************************************************************************/
142
143ACPI_STATUS
144AcpiExConvertToInteger (
145 ACPI_OPERAND_OBJECT *ObjDesc,
146 ACPI_OPERAND_OBJECT **ResultDesc,
147 ACPI_WALK_STATE *WalkState)
148{
149 UINT32 i;
150 ACPI_OPERAND_OBJECT *RetDesc;
151 UINT32 Count;
152 UINT8 *Pointer;
153 ACPI_INTEGER Result;
154 ACPI_STATUS Status;
155
156
157 ACPI_FUNCTION_TRACE_PTR ("ExConvertToInteger", ObjDesc);
158
159
160 switch (ACPI_GET_OBJECT_TYPE (ObjDesc))
161 {
162 case ACPI_TYPE_INTEGER:
163 *ResultDesc = ObjDesc;
164 return_ACPI_STATUS (AE_OK);
165
166 case ACPI_TYPE_STRING:
167 Pointer = (UINT8 *) ObjDesc->String.Pointer;
168 Count = ObjDesc->String.Length;
169 break;
170
171 case ACPI_TYPE_BUFFER:
172 Pointer = ObjDesc->Buffer.Pointer;
173 Count = ObjDesc->Buffer.Length;
174 break;
175
176 default:
177 return_ACPI_STATUS (AE_TYPE);
178 }
179
180 /*
181 * Convert the buffer/string to an integer. Note that both buffers and
182 * strings are treated as raw data - we don't convert ascii to hex for
183 * strings.
184 *
185 * There are two terminating conditions for the loop:
186 * 1) The size of an integer has been reached, or
187 * 2) The end of the buffer or string has been reached
188 */
189 Result = 0;
190
191 /* Transfer no more than an integer's worth of data */
192
193 if (Count > AcpiGbl_IntegerByteWidth)
194 {
195 Count = AcpiGbl_IntegerByteWidth;
196 }
197
198 /*
199 * String conversion is different than Buffer conversion
200 */
201 switch (ACPI_GET_OBJECT_TYPE (ObjDesc))
202 {
203 case ACPI_TYPE_STRING:
204
205 /*
206 * Convert string to an integer
207 * String must be hexadecimal as per the ACPI specification
208 */
209 Status = AcpiUtStrtoul64 ((char *) Pointer, 16, &Result);
210 if (ACPI_FAILURE (Status))
211 {
212 return_ACPI_STATUS (Status);
213 }
214 break;
215
216
217 case ACPI_TYPE_BUFFER:
218
219 /*
220 * Buffer conversion - we simply grab enough raw data from the
221 * buffer to fill an integer
222 */
223 for (i = 0; i < Count; i++)
224 {
225 /*
226 * Get next byte and shift it into the Result.
227 * Little endian is used, meaning that the first byte of the buffer
228 * is the LSB of the integer
229 */
230 Result |= (((ACPI_INTEGER) Pointer[i]) << (i * 8));
231 }
232 break;
233
234
235 default:
236 /* No other types can get here */
237 break;
238 }
239
240 /*
241 * Create a new integer
242 */
243 RetDesc = AcpiUtCreateInternalObject (ACPI_TYPE_INTEGER);
244 if (!RetDesc)
245 {
246 return_ACPI_STATUS (AE_NO_MEMORY);
247 }
248
249 /* Save the Result, delete original descriptor, store new descriptor */
250
251 RetDesc->Integer.Value = Result;
252
253 if (*ResultDesc == ObjDesc)
254 {
255 if (WalkState->Opcode != AML_STORE_OP)
256 {
257 AcpiUtRemoveReference (ObjDesc);
258 }
259 }
260
261 *ResultDesc = RetDesc;
262 return_ACPI_STATUS (AE_OK);
263}
264
265
266/*******************************************************************************
267 *
268 * FUNCTION: AcpiExConvertToBuffer
269 *
270 * PARAMETERS: *ObjDesc - Object to be converted. Must be an
271 * Integer, Buffer, or String
272 * WalkState - Current method state
273 *
274 * RETURN: Status
275 *
276 * DESCRIPTION: Convert an ACPI Object to an Buffer
277 *
278 ******************************************************************************/
279
280ACPI_STATUS
281AcpiExConvertToBuffer (
282 ACPI_OPERAND_OBJECT *ObjDesc,
283 ACPI_OPERAND_OBJECT **ResultDesc,
284 ACPI_WALK_STATE *WalkState)
285{
286 ACPI_OPERAND_OBJECT *RetDesc;
287 UINT32 i;
288 UINT8 *NewBuf;
289
290
291 ACPI_FUNCTION_TRACE_PTR ("ExConvertToBuffer", ObjDesc);
292
293
294 switch (ACPI_GET_OBJECT_TYPE (ObjDesc))
295 {
296 case ACPI_TYPE_INTEGER:
297
298 /*
299 * Create a new Buffer object
300 */
301 RetDesc = AcpiUtCreateInternalObject (ACPI_TYPE_BUFFER);
302 if (!RetDesc)
303 {
304 return_ACPI_STATUS (AE_NO_MEMORY);
305 }
306
307 /* Need enough space for one integer */
308
309 NewBuf = ACPI_MEM_CALLOCATE (AcpiGbl_IntegerByteWidth);
310 if (!NewBuf)
311 {
312 ACPI_REPORT_ERROR
313 (("ExConvertToBuffer: Buffer allocation failure\n"));
314 AcpiUtRemoveReference (RetDesc);
315 return_ACPI_STATUS (AE_NO_MEMORY);
316 }
317
318 /* Copy the integer to the buffer */
319
320 for (i = 0; i < AcpiGbl_IntegerByteWidth; i++)
321 {
322 NewBuf[i] = (UINT8) (ObjDesc->Integer.Value >> (i * 8));
323 }
324
325 /* Complete buffer object initialization */
326
327 RetDesc->Buffer.Flags |= AOPOBJ_DATA_VALID;
328 RetDesc->Buffer.Pointer = NewBuf;
329 RetDesc->Buffer.Length = AcpiGbl_IntegerByteWidth;
330
331 /* Return the new buffer descriptor */
332
333 *ResultDesc = RetDesc;
334 break;
335
336
337 case ACPI_TYPE_STRING:
338 *ResultDesc = ObjDesc;
339 break;
340
341
342 case ACPI_TYPE_BUFFER:
343 *ResultDesc = ObjDesc;
344 break;
345
346
347 default:
348 return_ACPI_STATUS (AE_TYPE);
349 }
350
351 /* Mark buffer initialized */
352
353 (*ResultDesc)->Common.Flags |= AOPOBJ_DATA_VALID;
354 return_ACPI_STATUS (AE_OK);
355}
356
357
358/*******************************************************************************
359 *
360 * FUNCTION: AcpiExConvertAscii
361 *
362 * PARAMETERS: Integer
363 *
364 * RETURN: Actual string length
365 *
366 * DESCRIPTION: Convert an ACPI Integer to a hex string
367 *
368 ******************************************************************************/
369
370UINT32
371AcpiExConvertToAscii (
372 ACPI_INTEGER Integer,
373 UINT32 Base,
374 UINT8 *String)
375{
376 UINT32 i;
377 UINT32 j;
378 UINT32 k = 0;
379 char HexDigit;
380 ACPI_INTEGER Digit;
381 UINT32 Remainder;
382 UINT32 Length = sizeof (ACPI_INTEGER);
383 BOOLEAN LeadingZero = TRUE;
384
385
386 ACPI_FUNCTION_ENTRY ();
387
388
389 switch (Base)
390 {
391 case 10:
392
393 Remainder = 0;
394 for (i = ACPI_MAX_DECIMAL_DIGITS; i > 0 ; i--)
395 {
396 /* Divide by nth factor of 10 */
397
398 Digit = Integer;
399 for (j = 1; j < i; j++)
400 {
401 (void) AcpiUtShortDivide (&Digit, 10, &Digit, &Remainder);
402 }
403
404 /* Create the decimal digit */
405
406 if (Digit != 0)
407 {
408 LeadingZero = FALSE;
409 }
410
411 if (!LeadingZero)
412 {
413 String[k] = (UINT8) (ACPI_ASCII_ZERO + Remainder);
414 k++;
415 }
416 }
417 break;
418
419 case 16:
420
421 /* Copy the integer to the buffer */
422
423 for (i = 0, j = ((Length * 2) -1); i < (Length * 2); i++, j--)
424 {
425
426 HexDigit = AcpiUtHexToAsciiChar (Integer, (j * 4));
427 if (HexDigit != ACPI_ASCII_ZERO)
428 {
429 LeadingZero = FALSE;
430 }
431
432 if (!LeadingZero)
433 {
434 String[k] = (UINT8) HexDigit;
435 k++;
436 }
437 }
438 break;
439
440 default:
441 break;
442 }
443
444 /*
445 * Since leading zeros are supressed, we must check for the case where
446 * the integer equals 0.
447 *
448 * Finally, null terminate the string and return the length
449 */
450 if (!k)
451 {
452 String [0] = ACPI_ASCII_ZERO;
453 k = 1;
454 }
455 String [k] = 0;
456
457 return (k);
458}
459
460
461/*******************************************************************************
462 *
463 * FUNCTION: AcpiExConvertToString
464 *
465 * PARAMETERS: *ObjDesc - Object to be converted. Must be an
466 * Integer, Buffer, or String
467 * WalkState - Current method state
468 *
469 * RETURN: Status
470 *
471 * DESCRIPTION: Convert an ACPI Object to a string
472 *
473 ******************************************************************************/
474
475ACPI_STATUS
476AcpiExConvertToString (
477 ACPI_OPERAND_OBJECT *ObjDesc,
478 ACPI_OPERAND_OBJECT **ResultDesc,
479 UINT32 Base,
480 UINT32 MaxLength,
481 ACPI_WALK_STATE *WalkState)
482{
483 ACPI_OPERAND_OBJECT *RetDesc;
484 UINT32 i;
485 UINT32 Index;
486 UINT32 StringLength;
487 UINT8 *NewBuf;
488 UINT8 *Pointer;
489
490
491 ACPI_FUNCTION_TRACE_PTR ("ExConvertToString", ObjDesc);
492
493
494 switch (ACPI_GET_OBJECT_TYPE (ObjDesc))
495 {
496 case ACPI_TYPE_INTEGER:
497
498 StringLength = AcpiGbl_IntegerByteWidth * 2;
499 if (Base == 10)
500 {
501 StringLength = ACPI_MAX_DECIMAL_DIGITS;
502 }
503
504 /*
505 * Create a new String
506 */
507 RetDesc = AcpiUtCreateInternalObject (ACPI_TYPE_STRING);
508 if (!RetDesc)
509 {
510 return_ACPI_STATUS (AE_NO_MEMORY);
511 }
512
513 /* Need enough space for one ASCII integer plus null terminator */
514
515 NewBuf = ACPI_MEM_CALLOCATE ((ACPI_SIZE) StringLength + 1);
516 if (!NewBuf)
517 {
518 ACPI_REPORT_ERROR
519 (("ExConvertToString: Buffer allocation failure\n"));
520 AcpiUtRemoveReference (RetDesc);
521 return_ACPI_STATUS (AE_NO_MEMORY);
522 }
523
524 /* Convert */
525
526 i = AcpiExConvertToAscii (ObjDesc->Integer.Value, Base, NewBuf);
527
528 /* Null terminate at the correct place */
529
530 if (MaxLength < i)
531 {
532 NewBuf[MaxLength] = 0;
533 RetDesc->String.Length = MaxLength;
534 }
535 else
536 {
537 NewBuf [i] = 0;
538 RetDesc->String.Length = i;
539 }
540
541 RetDesc->Buffer.Pointer = NewBuf;
542
543 /* Return the new buffer descriptor */
544
545 if (*ResultDesc == ObjDesc)
546 {
547 if (WalkState->Opcode != AML_STORE_OP)
548 {
549 AcpiUtRemoveReference (ObjDesc);
550 }
551 }
552
553 *ResultDesc = RetDesc;
554 break;
555
556
557 case ACPI_TYPE_BUFFER:
558
559 StringLength = ObjDesc->Buffer.Length * 3;
560 if (Base == 10)
561 {
562 StringLength = ObjDesc->Buffer.Length * 4;
563 }
564
565 if (MaxLength > ACPI_MAX_STRING_CONVERSION)
566 {
567 if (StringLength > ACPI_MAX_STRING_CONVERSION)
568 {
569 return_ACPI_STATUS (AE_AML_STRING_LIMIT);
570 }
571 }
572
573 /*
574 * Create a new string object
575 */
576 RetDesc = AcpiUtCreateInternalObject (ACPI_TYPE_STRING);
577 if (!RetDesc)
578 {
579 return_ACPI_STATUS (AE_NO_MEMORY);
580 }
581
582 /* String length is the lesser of the Max or the actual length */
583
584 if (MaxLength < StringLength)
585 {
586 StringLength = MaxLength;
587 }
588
589 NewBuf = ACPI_MEM_CALLOCATE ((ACPI_SIZE) StringLength + 1);
590 if (!NewBuf)
591 {
592 ACPI_REPORT_ERROR
593 (("ExConvertToString: Buffer allocation failure\n"));
594 AcpiUtRemoveReference (RetDesc);
595 return_ACPI_STATUS (AE_NO_MEMORY);
596 }
597
598 /*
599 * Convert each byte of the buffer to two ASCII characters plus a space.
600 */
601 Pointer = ObjDesc->Buffer.Pointer;
602 Index = 0;
603 for (i = 0, Index = 0; i < ObjDesc->Buffer.Length; i++)
604 {
605 Index = AcpiExConvertToAscii ((ACPI_INTEGER) Pointer[i], Base, &NewBuf[Index]);
606
607 NewBuf[Index] = ' ';
608 Index++;
609 }
610
611 /* Null terminate */
612
613 NewBuf [Index-1] = 0;
614 RetDesc->Buffer.Pointer = NewBuf;
615 RetDesc->String.Length = ACPI_STRLEN ((char *) NewBuf);
616
617 /* Return the new buffer descriptor */
618
619 if (*ResultDesc == ObjDesc)
620 {
621 if (WalkState->Opcode != AML_STORE_OP)
622 {
623 AcpiUtRemoveReference (ObjDesc);
624 }
625 }
626
627 *ResultDesc = RetDesc;
628 break;
629
630
631 case ACPI_TYPE_STRING:
632
633 if (MaxLength >= ObjDesc->String.Length)
634 {
635 *ResultDesc = ObjDesc;
636 }
637
638 else
639 {
640 /* Must copy the string first and then truncate it */
641
642 return_ACPI_STATUS (AE_NOT_IMPLEMENTED);
643 }
644 break;
645
646
647 default:
648 return_ACPI_STATUS (AE_TYPE);
649 }
650
651 return_ACPI_STATUS (AE_OK);
652}
653
654
655/*******************************************************************************
656 *
657 * FUNCTION: AcpiExConvertToTargetType
658 *
659 * PARAMETERS: DestinationType - Current type of the destination
660 * SourceDesc - Source object to be converted.
661 * WalkState - Current method state
662 *
663 * RETURN: Status
664 *
665 * DESCRIPTION: Implements "implicit conversion" rules for storing an object.
666 *
667 ******************************************************************************/
668
669ACPI_STATUS
670AcpiExConvertToTargetType (
671 ACPI_OBJECT_TYPE DestinationType,
672 ACPI_OPERAND_OBJECT *SourceDesc,
673 ACPI_OPERAND_OBJECT **ResultDesc,
674 ACPI_WALK_STATE *WalkState)
675{
676 ACPI_STATUS Status = AE_OK;
677
678
679 ACPI_FUNCTION_TRACE ("ExConvertToTargetType");
680
681
682 /* Default behavior */
683
684 *ResultDesc = SourceDesc;
685
686 /*
687 * If required by the target,
688 * perform implicit conversion on the source before we store it.
689 */
690 switch (GET_CURRENT_ARG_TYPE (WalkState->OpInfo->RuntimeArgs))
691 {
692 case ARGI_SIMPLE_TARGET:
693 case ARGI_FIXED_TARGET:
694 case ARGI_INTEGER_REF: /* Handles Increment, Decrement cases */
695
696 switch (DestinationType)
697 {
698 case INTERNAL_TYPE_REGION_FIELD:
699 /*
700 * Named field can always handle conversions
701 */
702 break;
703
704 default:
705 /* No conversion allowed for these types */
706
707 if (DestinationType != ACPI_GET_OBJECT_TYPE (SourceDesc))
708 {
709 ACPI_DEBUG_PRINT ((ACPI_DB_ERROR,
710 "Target does not allow conversion of type %s to %s\n",
711 AcpiUtGetObjectTypeName (SourceDesc),
712 AcpiUtGetTypeName (DestinationType)));
713 Status = AE_TYPE;
714 }
715 }
716 break;
717
718
719 case ARGI_TARGETREF:
720
721 switch (DestinationType)
722 {
723 case ACPI_TYPE_INTEGER:
724 case ACPI_TYPE_BUFFER_FIELD:
725 case INTERNAL_TYPE_BANK_FIELD:
726 case INTERNAL_TYPE_INDEX_FIELD:
727 /*
728 * These types require an Integer operand. We can convert
729 * a Buffer or a String to an Integer if necessary.
730 */
731 Status = AcpiExConvertToInteger (SourceDesc, ResultDesc, WalkState);
732 break;
733
734
735 case ACPI_TYPE_STRING:
736
737 /*
738 * The operand must be a String. We can convert an
739 * Integer or Buffer if necessary
740 */
741 Status = AcpiExConvertToString (SourceDesc, ResultDesc, 16, ACPI_UINT32_MAX, WalkState);
742 break;
743
744
745 case ACPI_TYPE_BUFFER:
746
747 /*
748 * The operand must be a Buffer. We can convert an
749 * Integer or String if necessary
750 */
751 Status = AcpiExConvertToBuffer (SourceDesc, ResultDesc, WalkState);
752 break;
753
754
755 default:
756 Status = AE_AML_INTERNAL;
757 break;
758 }
759 break;
760
761
762 case ARGI_REFERENCE:
763 /*
764 * CreateXxxxField cases - we are storing the field object into the name
765 */
766 break;
767
768
769 default:
770 ACPI_DEBUG_PRINT ((ACPI_DB_ERROR,
771 "Unknown Target type ID 0x%X Op %s DestType %s\n",
772 GET_CURRENT_ARG_TYPE (WalkState->OpInfo->RuntimeArgs),
773 WalkState->OpInfo->Name, AcpiUtGetTypeName (DestinationType)));
774
775 Status = AE_AML_INTERNAL;
776 }
777
778 /*
779 * Source-to-Target conversion semantics:
780 *
781 * If conversion to the target type cannot be performed, then simply
782 * overwrite the target with the new object and type.
783 */
784 if (Status == AE_TYPE)
785 {
786 Status = AE_OK;
787 }
788
789 return_ACPI_STATUS (Status);
790}
791
792
2 *
3 * Module Name: exconvrt - Object conversion routines
4 * $Revision: 37 $
5 *
6 *****************************************************************************/
7
8/******************************************************************************
9 *
10 * 1. Copyright Notice
11 *
12 * Some or all of this work - Copyright (c) 1999 - 2002, Intel Corp.
13 * All rights reserved.
14 *
15 * 2. License
16 *
17 * 2.1. This is your license from Intel Corp. under its intellectual property
18 * rights. You may have additional license terms from the party that provided
19 * you this software, covering your right to use that party's intellectual
20 * property rights.
21 *
22 * 2.2. Intel grants, free of charge, to any person ("Licensee") obtaining a
23 * copy of the source code appearing in this file ("Covered Code") an
24 * irrevocable, perpetual, worldwide license under Intel's copyrights in the
25 * base code distributed originally by Intel ("Original Intel Code") to copy,
26 * make derivatives, distribute, use and display any portion of the Covered
27 * Code in any form, with the right to sublicense such rights; and
28 *
29 * 2.3. Intel grants Licensee a non-exclusive and non-transferable patent
30 * license (with the right to sublicense), under only those claims of Intel
31 * patents that are infringed by the Original Intel Code, to make, use, sell,
32 * offer to sell, and import the Covered Code and derivative works thereof
33 * solely to the minimum extent necessary to exercise the above copyright
34 * license, and in no event shall the patent license extend to any additions
35 * to or modifications of the Original Intel Code. No other license or right
36 * is granted directly or by implication, estoppel or otherwise;
37 *
38 * The above copyright and patent license is granted only if the following
39 * conditions are met:
40 *
41 * 3. Conditions
42 *
43 * 3.1. Redistribution of Source with Rights to Further Distribute Source.
44 * Redistribution of source code of any substantial portion of the Covered
45 * Code or modification with rights to further distribute source must include
46 * the above Copyright Notice, the above License, this list of Conditions,
47 * and the following Disclaimer and Export Compliance provision. In addition,
48 * Licensee must cause all Covered Code to which Licensee contributes to
49 * contain a file documenting the changes Licensee made to create that Covered
50 * Code and the date of any change. Licensee must include in that file the
51 * documentation of any changes made by any predecessor Licensee. Licensee
52 * must include a prominent statement that the modification is derived,
53 * directly or indirectly, from Original Intel Code.
54 *
55 * 3.2. Redistribution of Source with no Rights to Further Distribute Source.
56 * Redistribution of source code of any substantial portion of the Covered
57 * Code or modification without rights to further distribute source must
58 * include the following Disclaimer and Export Compliance provision in the
59 * documentation and/or other materials provided with distribution. In
60 * addition, Licensee may not authorize further sublicense of source of any
61 * portion of the Covered Code, and must include terms to the effect that the
62 * license from Licensee to its licensee is limited to the intellectual
63 * property embodied in the software Licensee provides to its licensee, and
64 * not to intellectual property embodied in modifications its licensee may
65 * make.
66 *
67 * 3.3. Redistribution of Executable. Redistribution in executable form of any
68 * substantial portion of the Covered Code or modification must reproduce the
69 * above Copyright Notice, and the following Disclaimer and Export Compliance
70 * provision in the documentation and/or other materials provided with the
71 * distribution.
72 *
73 * 3.4. Intel retains all right, title, and interest in and to the Original
74 * Intel Code.
75 *
76 * 3.5. Neither the name Intel nor any other trademark owned or controlled by
77 * Intel shall be used in advertising or otherwise to promote the sale, use or
78 * other dealings in products derived from or relating to the Covered Code
79 * without prior written authorization from Intel.
80 *
81 * 4. Disclaimer and Export Compliance
82 *
83 * 4.1. INTEL MAKES NO WARRANTY OF ANY KIND REGARDING ANY SOFTWARE PROVIDED
84 * HERE. ANY SOFTWARE ORIGINATING FROM INTEL OR DERIVED FROM INTEL SOFTWARE
85 * IS PROVIDED "AS IS," AND INTEL WILL NOT PROVIDE ANY SUPPORT, ASSISTANCE,
86 * INSTALLATION, TRAINING OR OTHER SERVICES. INTEL WILL NOT PROVIDE ANY
87 * UPDATES, ENHANCEMENTS OR EXTENSIONS. INTEL SPECIFICALLY DISCLAIMS ANY
88 * IMPLIED WARRANTIES OF MERCHANTABILITY, NONINFRINGEMENT AND FITNESS FOR A
89 * PARTICULAR PURPOSE.
90 *
91 * 4.2. IN NO EVENT SHALL INTEL HAVE ANY LIABILITY TO LICENSEE, ITS LICENSEES
92 * OR ANY OTHER THIRD PARTY, FOR ANY LOST PROFITS, LOST DATA, LOSS OF USE OR
93 * COSTS OF PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES, OR FOR ANY INDIRECT,
94 * SPECIAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THIS AGREEMENT, UNDER ANY
95 * CAUSE OF ACTION OR THEORY OF LIABILITY, AND IRRESPECTIVE OF WHETHER INTEL
96 * HAS ADVANCE NOTICE OF THE POSSIBILITY OF SUCH DAMAGES. THESE LIMITATIONS
97 * SHALL APPLY NOTWITHSTANDING THE FAILURE OF THE ESSENTIAL PURPOSE OF ANY
98 * LIMITED REMEDY.
99 *
100 * 4.3. Licensee shall not export, either directly or indirectly, any of this
101 * software or system incorporating such software without first obtaining any
102 * required license or other approval from the U. S. Department of Commerce or
103 * any other agency or department of the United States Government. In the
104 * event Licensee exports any such software from the United States or
105 * re-exports any such software from a foreign destination, Licensee shall
106 * ensure that the distribution and export/re-export of the software is in
107 * compliance with all laws, regulations, orders, or other restrictions of the
108 * U.S. Export Administration Regulations. Licensee agrees that neither it nor
109 * any of its subsidiaries will export/re-export any technical data, process,
110 * software, or service, directly or indirectly, to any country for which the
111 * United States government or any agency thereof requires an export license,
112 * other governmental approval, or letter of assurance, without first obtaining
113 * such license, approval or letter.
114 *
115 *****************************************************************************/
116
117
118#define __EXCONVRT_C__
119
120#include "acpi.h"
121#include "acinterp.h"
122#include "amlcode.h"
123
124
125#define _COMPONENT ACPI_EXECUTER
126 ACPI_MODULE_NAME ("exconvrt")
127
128
129/*******************************************************************************
130 *
131 * FUNCTION: AcpiExConvertToInteger
132 *
133 * PARAMETERS: *ObjDesc - Object to be converted. Must be an
134 * Integer, Buffer, or String
135 * WalkState - Current method state
136 *
137 * RETURN: Status
138 *
139 * DESCRIPTION: Convert an ACPI Object to an integer.
140 *
141 ******************************************************************************/
142
143ACPI_STATUS
144AcpiExConvertToInteger (
145 ACPI_OPERAND_OBJECT *ObjDesc,
146 ACPI_OPERAND_OBJECT **ResultDesc,
147 ACPI_WALK_STATE *WalkState)
148{
149 UINT32 i;
150 ACPI_OPERAND_OBJECT *RetDesc;
151 UINT32 Count;
152 UINT8 *Pointer;
153 ACPI_INTEGER Result;
154 ACPI_STATUS Status;
155
156
157 ACPI_FUNCTION_TRACE_PTR ("ExConvertToInteger", ObjDesc);
158
159
160 switch (ACPI_GET_OBJECT_TYPE (ObjDesc))
161 {
162 case ACPI_TYPE_INTEGER:
163 *ResultDesc = ObjDesc;
164 return_ACPI_STATUS (AE_OK);
165
166 case ACPI_TYPE_STRING:
167 Pointer = (UINT8 *) ObjDesc->String.Pointer;
168 Count = ObjDesc->String.Length;
169 break;
170
171 case ACPI_TYPE_BUFFER:
172 Pointer = ObjDesc->Buffer.Pointer;
173 Count = ObjDesc->Buffer.Length;
174 break;
175
176 default:
177 return_ACPI_STATUS (AE_TYPE);
178 }
179
180 /*
181 * Convert the buffer/string to an integer. Note that both buffers and
182 * strings are treated as raw data - we don't convert ascii to hex for
183 * strings.
184 *
185 * There are two terminating conditions for the loop:
186 * 1) The size of an integer has been reached, or
187 * 2) The end of the buffer or string has been reached
188 */
189 Result = 0;
190
191 /* Transfer no more than an integer's worth of data */
192
193 if (Count > AcpiGbl_IntegerByteWidth)
194 {
195 Count = AcpiGbl_IntegerByteWidth;
196 }
197
198 /*
199 * String conversion is different than Buffer conversion
200 */
201 switch (ACPI_GET_OBJECT_TYPE (ObjDesc))
202 {
203 case ACPI_TYPE_STRING:
204
205 /*
206 * Convert string to an integer
207 * String must be hexadecimal as per the ACPI specification
208 */
209 Status = AcpiUtStrtoul64 ((char *) Pointer, 16, &Result);
210 if (ACPI_FAILURE (Status))
211 {
212 return_ACPI_STATUS (Status);
213 }
214 break;
215
216
217 case ACPI_TYPE_BUFFER:
218
219 /*
220 * Buffer conversion - we simply grab enough raw data from the
221 * buffer to fill an integer
222 */
223 for (i = 0; i < Count; i++)
224 {
225 /*
226 * Get next byte and shift it into the Result.
227 * Little endian is used, meaning that the first byte of the buffer
228 * is the LSB of the integer
229 */
230 Result |= (((ACPI_INTEGER) Pointer[i]) << (i * 8));
231 }
232 break;
233
234
235 default:
236 /* No other types can get here */
237 break;
238 }
239
240 /*
241 * Create a new integer
242 */
243 RetDesc = AcpiUtCreateInternalObject (ACPI_TYPE_INTEGER);
244 if (!RetDesc)
245 {
246 return_ACPI_STATUS (AE_NO_MEMORY);
247 }
248
249 /* Save the Result, delete original descriptor, store new descriptor */
250
251 RetDesc->Integer.Value = Result;
252
253 if (*ResultDesc == ObjDesc)
254 {
255 if (WalkState->Opcode != AML_STORE_OP)
256 {
257 AcpiUtRemoveReference (ObjDesc);
258 }
259 }
260
261 *ResultDesc = RetDesc;
262 return_ACPI_STATUS (AE_OK);
263}
264
265
266/*******************************************************************************
267 *
268 * FUNCTION: AcpiExConvertToBuffer
269 *
270 * PARAMETERS: *ObjDesc - Object to be converted. Must be an
271 * Integer, Buffer, or String
272 * WalkState - Current method state
273 *
274 * RETURN: Status
275 *
276 * DESCRIPTION: Convert an ACPI Object to an Buffer
277 *
278 ******************************************************************************/
279
280ACPI_STATUS
281AcpiExConvertToBuffer (
282 ACPI_OPERAND_OBJECT *ObjDesc,
283 ACPI_OPERAND_OBJECT **ResultDesc,
284 ACPI_WALK_STATE *WalkState)
285{
286 ACPI_OPERAND_OBJECT *RetDesc;
287 UINT32 i;
288 UINT8 *NewBuf;
289
290
291 ACPI_FUNCTION_TRACE_PTR ("ExConvertToBuffer", ObjDesc);
292
293
294 switch (ACPI_GET_OBJECT_TYPE (ObjDesc))
295 {
296 case ACPI_TYPE_INTEGER:
297
298 /*
299 * Create a new Buffer object
300 */
301 RetDesc = AcpiUtCreateInternalObject (ACPI_TYPE_BUFFER);
302 if (!RetDesc)
303 {
304 return_ACPI_STATUS (AE_NO_MEMORY);
305 }
306
307 /* Need enough space for one integer */
308
309 NewBuf = ACPI_MEM_CALLOCATE (AcpiGbl_IntegerByteWidth);
310 if (!NewBuf)
311 {
312 ACPI_REPORT_ERROR
313 (("ExConvertToBuffer: Buffer allocation failure\n"));
314 AcpiUtRemoveReference (RetDesc);
315 return_ACPI_STATUS (AE_NO_MEMORY);
316 }
317
318 /* Copy the integer to the buffer */
319
320 for (i = 0; i < AcpiGbl_IntegerByteWidth; i++)
321 {
322 NewBuf[i] = (UINT8) (ObjDesc->Integer.Value >> (i * 8));
323 }
324
325 /* Complete buffer object initialization */
326
327 RetDesc->Buffer.Flags |= AOPOBJ_DATA_VALID;
328 RetDesc->Buffer.Pointer = NewBuf;
329 RetDesc->Buffer.Length = AcpiGbl_IntegerByteWidth;
330
331 /* Return the new buffer descriptor */
332
333 *ResultDesc = RetDesc;
334 break;
335
336
337 case ACPI_TYPE_STRING:
338 *ResultDesc = ObjDesc;
339 break;
340
341
342 case ACPI_TYPE_BUFFER:
343 *ResultDesc = ObjDesc;
344 break;
345
346
347 default:
348 return_ACPI_STATUS (AE_TYPE);
349 }
350
351 /* Mark buffer initialized */
352
353 (*ResultDesc)->Common.Flags |= AOPOBJ_DATA_VALID;
354 return_ACPI_STATUS (AE_OK);
355}
356
357
358/*******************************************************************************
359 *
360 * FUNCTION: AcpiExConvertAscii
361 *
362 * PARAMETERS: Integer
363 *
364 * RETURN: Actual string length
365 *
366 * DESCRIPTION: Convert an ACPI Integer to a hex string
367 *
368 ******************************************************************************/
369
370UINT32
371AcpiExConvertToAscii (
372 ACPI_INTEGER Integer,
373 UINT32 Base,
374 UINT8 *String)
375{
376 UINT32 i;
377 UINT32 j;
378 UINT32 k = 0;
379 char HexDigit;
380 ACPI_INTEGER Digit;
381 UINT32 Remainder;
382 UINT32 Length = sizeof (ACPI_INTEGER);
383 BOOLEAN LeadingZero = TRUE;
384
385
386 ACPI_FUNCTION_ENTRY ();
387
388
389 switch (Base)
390 {
391 case 10:
392
393 Remainder = 0;
394 for (i = ACPI_MAX_DECIMAL_DIGITS; i > 0 ; i--)
395 {
396 /* Divide by nth factor of 10 */
397
398 Digit = Integer;
399 for (j = 1; j < i; j++)
400 {
401 (void) AcpiUtShortDivide (&Digit, 10, &Digit, &Remainder);
402 }
403
404 /* Create the decimal digit */
405
406 if (Digit != 0)
407 {
408 LeadingZero = FALSE;
409 }
410
411 if (!LeadingZero)
412 {
413 String[k] = (UINT8) (ACPI_ASCII_ZERO + Remainder);
414 k++;
415 }
416 }
417 break;
418
419 case 16:
420
421 /* Copy the integer to the buffer */
422
423 for (i = 0, j = ((Length * 2) -1); i < (Length * 2); i++, j--)
424 {
425
426 HexDigit = AcpiUtHexToAsciiChar (Integer, (j * 4));
427 if (HexDigit != ACPI_ASCII_ZERO)
428 {
429 LeadingZero = FALSE;
430 }
431
432 if (!LeadingZero)
433 {
434 String[k] = (UINT8) HexDigit;
435 k++;
436 }
437 }
438 break;
439
440 default:
441 break;
442 }
443
444 /*
445 * Since leading zeros are supressed, we must check for the case where
446 * the integer equals 0.
447 *
448 * Finally, null terminate the string and return the length
449 */
450 if (!k)
451 {
452 String [0] = ACPI_ASCII_ZERO;
453 k = 1;
454 }
455 String [k] = 0;
456
457 return (k);
458}
459
460
461/*******************************************************************************
462 *
463 * FUNCTION: AcpiExConvertToString
464 *
465 * PARAMETERS: *ObjDesc - Object to be converted. Must be an
466 * Integer, Buffer, or String
467 * WalkState - Current method state
468 *
469 * RETURN: Status
470 *
471 * DESCRIPTION: Convert an ACPI Object to a string
472 *
473 ******************************************************************************/
474
475ACPI_STATUS
476AcpiExConvertToString (
477 ACPI_OPERAND_OBJECT *ObjDesc,
478 ACPI_OPERAND_OBJECT **ResultDesc,
479 UINT32 Base,
480 UINT32 MaxLength,
481 ACPI_WALK_STATE *WalkState)
482{
483 ACPI_OPERAND_OBJECT *RetDesc;
484 UINT32 i;
485 UINT32 Index;
486 UINT32 StringLength;
487 UINT8 *NewBuf;
488 UINT8 *Pointer;
489
490
491 ACPI_FUNCTION_TRACE_PTR ("ExConvertToString", ObjDesc);
492
493
494 switch (ACPI_GET_OBJECT_TYPE (ObjDesc))
495 {
496 case ACPI_TYPE_INTEGER:
497
498 StringLength = AcpiGbl_IntegerByteWidth * 2;
499 if (Base == 10)
500 {
501 StringLength = ACPI_MAX_DECIMAL_DIGITS;
502 }
503
504 /*
505 * Create a new String
506 */
507 RetDesc = AcpiUtCreateInternalObject (ACPI_TYPE_STRING);
508 if (!RetDesc)
509 {
510 return_ACPI_STATUS (AE_NO_MEMORY);
511 }
512
513 /* Need enough space for one ASCII integer plus null terminator */
514
515 NewBuf = ACPI_MEM_CALLOCATE ((ACPI_SIZE) StringLength + 1);
516 if (!NewBuf)
517 {
518 ACPI_REPORT_ERROR
519 (("ExConvertToString: Buffer allocation failure\n"));
520 AcpiUtRemoveReference (RetDesc);
521 return_ACPI_STATUS (AE_NO_MEMORY);
522 }
523
524 /* Convert */
525
526 i = AcpiExConvertToAscii (ObjDesc->Integer.Value, Base, NewBuf);
527
528 /* Null terminate at the correct place */
529
530 if (MaxLength < i)
531 {
532 NewBuf[MaxLength] = 0;
533 RetDesc->String.Length = MaxLength;
534 }
535 else
536 {
537 NewBuf [i] = 0;
538 RetDesc->String.Length = i;
539 }
540
541 RetDesc->Buffer.Pointer = NewBuf;
542
543 /* Return the new buffer descriptor */
544
545 if (*ResultDesc == ObjDesc)
546 {
547 if (WalkState->Opcode != AML_STORE_OP)
548 {
549 AcpiUtRemoveReference (ObjDesc);
550 }
551 }
552
553 *ResultDesc = RetDesc;
554 break;
555
556
557 case ACPI_TYPE_BUFFER:
558
559 StringLength = ObjDesc->Buffer.Length * 3;
560 if (Base == 10)
561 {
562 StringLength = ObjDesc->Buffer.Length * 4;
563 }
564
565 if (MaxLength > ACPI_MAX_STRING_CONVERSION)
566 {
567 if (StringLength > ACPI_MAX_STRING_CONVERSION)
568 {
569 return_ACPI_STATUS (AE_AML_STRING_LIMIT);
570 }
571 }
572
573 /*
574 * Create a new string object
575 */
576 RetDesc = AcpiUtCreateInternalObject (ACPI_TYPE_STRING);
577 if (!RetDesc)
578 {
579 return_ACPI_STATUS (AE_NO_MEMORY);
580 }
581
582 /* String length is the lesser of the Max or the actual length */
583
584 if (MaxLength < StringLength)
585 {
586 StringLength = MaxLength;
587 }
588
589 NewBuf = ACPI_MEM_CALLOCATE ((ACPI_SIZE) StringLength + 1);
590 if (!NewBuf)
591 {
592 ACPI_REPORT_ERROR
593 (("ExConvertToString: Buffer allocation failure\n"));
594 AcpiUtRemoveReference (RetDesc);
595 return_ACPI_STATUS (AE_NO_MEMORY);
596 }
597
598 /*
599 * Convert each byte of the buffer to two ASCII characters plus a space.
600 */
601 Pointer = ObjDesc->Buffer.Pointer;
602 Index = 0;
603 for (i = 0, Index = 0; i < ObjDesc->Buffer.Length; i++)
604 {
605 Index = AcpiExConvertToAscii ((ACPI_INTEGER) Pointer[i], Base, &NewBuf[Index]);
606
607 NewBuf[Index] = ' ';
608 Index++;
609 }
610
611 /* Null terminate */
612
613 NewBuf [Index-1] = 0;
614 RetDesc->Buffer.Pointer = NewBuf;
615 RetDesc->String.Length = ACPI_STRLEN ((char *) NewBuf);
616
617 /* Return the new buffer descriptor */
618
619 if (*ResultDesc == ObjDesc)
620 {
621 if (WalkState->Opcode != AML_STORE_OP)
622 {
623 AcpiUtRemoveReference (ObjDesc);
624 }
625 }
626
627 *ResultDesc = RetDesc;
628 break;
629
630
631 case ACPI_TYPE_STRING:
632
633 if (MaxLength >= ObjDesc->String.Length)
634 {
635 *ResultDesc = ObjDesc;
636 }
637
638 else
639 {
640 /* Must copy the string first and then truncate it */
641
642 return_ACPI_STATUS (AE_NOT_IMPLEMENTED);
643 }
644 break;
645
646
647 default:
648 return_ACPI_STATUS (AE_TYPE);
649 }
650
651 return_ACPI_STATUS (AE_OK);
652}
653
654
655/*******************************************************************************
656 *
657 * FUNCTION: AcpiExConvertToTargetType
658 *
659 * PARAMETERS: DestinationType - Current type of the destination
660 * SourceDesc - Source object to be converted.
661 * WalkState - Current method state
662 *
663 * RETURN: Status
664 *
665 * DESCRIPTION: Implements "implicit conversion" rules for storing an object.
666 *
667 ******************************************************************************/
668
669ACPI_STATUS
670AcpiExConvertToTargetType (
671 ACPI_OBJECT_TYPE DestinationType,
672 ACPI_OPERAND_OBJECT *SourceDesc,
673 ACPI_OPERAND_OBJECT **ResultDesc,
674 ACPI_WALK_STATE *WalkState)
675{
676 ACPI_STATUS Status = AE_OK;
677
678
679 ACPI_FUNCTION_TRACE ("ExConvertToTargetType");
680
681
682 /* Default behavior */
683
684 *ResultDesc = SourceDesc;
685
686 /*
687 * If required by the target,
688 * perform implicit conversion on the source before we store it.
689 */
690 switch (GET_CURRENT_ARG_TYPE (WalkState->OpInfo->RuntimeArgs))
691 {
692 case ARGI_SIMPLE_TARGET:
693 case ARGI_FIXED_TARGET:
694 case ARGI_INTEGER_REF: /* Handles Increment, Decrement cases */
695
696 switch (DestinationType)
697 {
698 case INTERNAL_TYPE_REGION_FIELD:
699 /*
700 * Named field can always handle conversions
701 */
702 break;
703
704 default:
705 /* No conversion allowed for these types */
706
707 if (DestinationType != ACPI_GET_OBJECT_TYPE (SourceDesc))
708 {
709 ACPI_DEBUG_PRINT ((ACPI_DB_ERROR,
710 "Target does not allow conversion of type %s to %s\n",
711 AcpiUtGetObjectTypeName (SourceDesc),
712 AcpiUtGetTypeName (DestinationType)));
713 Status = AE_TYPE;
714 }
715 }
716 break;
717
718
719 case ARGI_TARGETREF:
720
721 switch (DestinationType)
722 {
723 case ACPI_TYPE_INTEGER:
724 case ACPI_TYPE_BUFFER_FIELD:
725 case INTERNAL_TYPE_BANK_FIELD:
726 case INTERNAL_TYPE_INDEX_FIELD:
727 /*
728 * These types require an Integer operand. We can convert
729 * a Buffer or a String to an Integer if necessary.
730 */
731 Status = AcpiExConvertToInteger (SourceDesc, ResultDesc, WalkState);
732 break;
733
734
735 case ACPI_TYPE_STRING:
736
737 /*
738 * The operand must be a String. We can convert an
739 * Integer or Buffer if necessary
740 */
741 Status = AcpiExConvertToString (SourceDesc, ResultDesc, 16, ACPI_UINT32_MAX, WalkState);
742 break;
743
744
745 case ACPI_TYPE_BUFFER:
746
747 /*
748 * The operand must be a Buffer. We can convert an
749 * Integer or String if necessary
750 */
751 Status = AcpiExConvertToBuffer (SourceDesc, ResultDesc, WalkState);
752 break;
753
754
755 default:
756 Status = AE_AML_INTERNAL;
757 break;
758 }
759 break;
760
761
762 case ARGI_REFERENCE:
763 /*
764 * CreateXxxxField cases - we are storing the field object into the name
765 */
766 break;
767
768
769 default:
770 ACPI_DEBUG_PRINT ((ACPI_DB_ERROR,
771 "Unknown Target type ID 0x%X Op %s DestType %s\n",
772 GET_CURRENT_ARG_TYPE (WalkState->OpInfo->RuntimeArgs),
773 WalkState->OpInfo->Name, AcpiUtGetTypeName (DestinationType)));
774
775 Status = AE_AML_INTERNAL;
776 }
777
778 /*
779 * Source-to-Target conversion semantics:
780 *
781 * If conversion to the target type cannot be performed, then simply
782 * overwrite the target with the new object and type.
783 */
784 if (Status == AE_TYPE)
785 {
786 Status = AE_OK;
787 }
788
789 return_ACPI_STATUS (Status);
790}
791
792