dtutils.c revision 306536 
1/******************************************************************************
2 *
3 * Module Name: dtutils.c - Utility routines for the data table compiler
4 *
5 *****************************************************************************/
6
7/*
8 * Copyright (C) 2000 - 2016, 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.
29 *
30 * NO WARRANTY
31 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
32 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
33 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
34 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
35 * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
36 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
37 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
38 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
39 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
40 * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
41 * POSSIBILITY OF SUCH DAMAGES.
42 */
43
44#include <contrib/dev/acpica/compiler/aslcompiler.h>
45#include <contrib/dev/acpica/compiler/dtcompiler.h>
46#include <contrib/dev/acpica/include/actables.h>
47
48#define _COMPONENT          DT_COMPILER
49        ACPI_MODULE_NAME    ("dtutils")
50
51/* Local prototypes */
52
53static void
54DtSum (
55    DT_SUBTABLE             *Subtable,
56    void                    *Context,
57    void                    *ReturnValue);
58
59
60/******************************************************************************
61 *
62 * FUNCTION:    DtError
63 *
64 * PARAMETERS:  Level               - Seriousness (Warning/error, etc.)
65 *              MessageId           - Index into global message buffer
66 *              Op                  - Parse node where error happened
67 *              ExtraMessage        - additional error message
68 *
69 * RETURN:      None
70 *
71 * DESCRIPTION: Common error interface for data table compiler
72 *
73 *****************************************************************************/
74
75void
76DtError (
77    UINT8                   Level,
78    UINT16                  MessageId,
79    DT_FIELD                *FieldObject,
80    char                    *ExtraMessage)
81{
82
83    /* Check if user wants to ignore this exception */
84
85    if (AslIsExceptionDisabled (Level, MessageId))
86    {
87        return;
88    }
89
90    if (FieldObject)
91    {
92        AslCommonError (Level, MessageId,
93            FieldObject->Line,
94            FieldObject->Line,
95            FieldObject->ByteOffset,
96            FieldObject->Column,
97            Gbl_Files[ASL_FILE_INPUT].Filename, ExtraMessage);
98    }
99    else
100    {
101        AslCommonError (Level, MessageId, 0,
102            0, 0, 0, 0, ExtraMessage);
103    }
104}
105
106
107/******************************************************************************
108 *
109 * FUNCTION:    DtNameError
110 *
111 * PARAMETERS:  Level               - Seriousness (Warning/error, etc.)
112 *              MessageId           - Index into global message buffer
113 *              Op                  - Parse node where error happened
114 *              ExtraMessage        - additional error message
115 *
116 * RETURN:      None
117 *
118 * DESCRIPTION: Error interface for named objects
119 *
120 *****************************************************************************/
121
122void
123DtNameError (
124    UINT8                   Level,
125    UINT16                  MessageId,
126    DT_FIELD                *FieldObject,
127    char                    *ExtraMessage)
128{
129
130    switch (Level)
131    {
132    case ASL_WARNING2:
133    case ASL_WARNING3:
134
135        if (Gbl_WarningLevel < Level)
136        {
137            return;
138        }
139        break;
140
141    default:
142
143        break;
144    }
145
146    if (FieldObject)
147    {
148        AslCommonError (Level, MessageId,
149            FieldObject->Line,
150            FieldObject->Line,
151            FieldObject->ByteOffset,
152            FieldObject->NameColumn,
153            Gbl_Files[ASL_FILE_INPUT].Filename, ExtraMessage);
154    }
155    else
156    {
157        AslCommonError (Level, MessageId, 0,
158            0, 0, 0, 0, ExtraMessage);
159    }
160}
161
162
163/*******************************************************************************
164 *
165 * FUNCTION:    DtFatal
166 *
167 * PARAMETERS:  None
168 *
169 * RETURN:      None
170 *
171 * DESCRIPTION: Dump the error log and abort the compiler. Used for serious
172 *              compile or I/O errors
173 *
174 ******************************************************************************/
175
176void
177DtFatal (
178    UINT16                  MessageId,
179    DT_FIELD                *FieldObject,
180    char                    *ExtraMessage)
181{
182
183    DtError (ASL_ERROR, MessageId, FieldObject, ExtraMessage);
184
185/*
186 * TBD: remove this entire function, DtFatal
187 *
188 * We cannot abort the compiler on error, because we may be compiling a
189 * list of files. We must move on to the next file.
190 */
191#ifdef __OBSOLETE
192    CmCleanupAndExit ();
193    exit (1);
194#endif
195}
196
197
198/******************************************************************************
199 *
200 * FUNCTION:    DtStrtoul64
201 *
202 * PARAMETERS:  String              - Null terminated string
203 *              ReturnInteger       - Where the converted integer is returned
204 *
205 * RETURN:      Status
206 *
207 * DESCRIPTION: Simple conversion of a string hex integer constant to unsigned
208 *              value. Assumes no leading "0x" for the constant.
209 *
210 * Portability note: The reason this function exists is because a 64-bit
211 * sscanf is not available in all environments.
212 *
213 *****************************************************************************/
214
215ACPI_STATUS
216DtStrtoul64 (
217    char                    *String,
218    UINT64                  *ReturnInteger)
219{
220    char                    *ThisChar = String;
221    UINT32                  ThisDigit;
222    UINT64                  ReturnValue = 0;
223    int                     DigitCount = 0;
224
225
226    /* Skip over any white space in the buffer */
227
228    while ((*ThisChar == ' ') || (*ThisChar == '\t'))
229    {
230        ThisChar++;
231    }
232
233    /* Skip leading zeros */
234
235    while ((*ThisChar) == '0')
236    {
237        ThisChar++;
238    }
239
240    /* Convert character-by-character */
241
242    while (*ThisChar)
243    {
244        if (isdigit ((int) *ThisChar))
245        {
246            /* Convert ASCII 0-9 to Decimal value */
247
248            ThisDigit = ((UINT8) *ThisChar) - '0';
249        }
250        else /* Letter */
251        {
252            ThisDigit = (UINT32) toupper ((int) *ThisChar);
253            if (!isxdigit ((int) ThisDigit))
254            {
255                /* Not A-F */
256
257                return (AE_BAD_CHARACTER);
258            }
259
260            /* Convert ASCII Hex char (A-F) to value */
261
262            ThisDigit = (ThisDigit - 'A') + 10;
263        }
264
265        /* Insert the 4-bit hex digit */
266
267        ReturnValue <<= 4;
268        ReturnValue += ThisDigit;
269
270        ThisChar++;
271        DigitCount++;
272        if (DigitCount > 16)
273        {
274            /* Value is too large (> 64 bits/8 bytes/16 hex digits) */
275
276            return (AE_LIMIT);
277        }
278    }
279
280    *ReturnInteger = ReturnValue;
281    return (AE_OK);
282}
283
284
285/******************************************************************************
286 *
287 * FUNCTION:    DtGetFieldValue
288 *
289 * PARAMETERS:  Field               - Current field list pointer
290 *
291 * RETURN:      Field value
292 *
293 * DESCRIPTION: Get field value
294 *
295 *****************************************************************************/
296
297char *
298DtGetFieldValue (
299    DT_FIELD                *Field)
300{
301    if (!Field)
302    {
303        return (NULL);
304    }
305
306    return (Field->Value);
307}
308
309
310/******************************************************************************
311 *
312 * FUNCTION:    DtGetFieldType
313 *
314 * PARAMETERS:  Info                - Data table info
315 *
316 * RETURN:      Field type
317 *
318 * DESCRIPTION: Get field type
319 *
320 *****************************************************************************/
321
322UINT8
323DtGetFieldType (
324    ACPI_DMTABLE_INFO       *Info)
325{
326    UINT8                   Type;
327
328
329    /* DT_FLAG means that this is the start of a block of flag bits */
330    /* TBD - we can make these a separate opcode later */
331
332    if (Info->Flags & DT_FLAG)
333    {
334        return (DT_FIELD_TYPE_FLAGS_INTEGER);
335    }
336
337    /* Type is based upon the opcode for this field in the info table */
338
339    switch (Info->Opcode)
340    {
341    case ACPI_DMT_FLAG0:
342    case ACPI_DMT_FLAG1:
343    case ACPI_DMT_FLAG2:
344    case ACPI_DMT_FLAG3:
345    case ACPI_DMT_FLAG4:
346    case ACPI_DMT_FLAG5:
347    case ACPI_DMT_FLAG6:
348    case ACPI_DMT_FLAG7:
349    case ACPI_DMT_FLAGS0:
350    case ACPI_DMT_FLAGS1:
351    case ACPI_DMT_FLAGS2:
352    case ACPI_DMT_FLAGS4:
353
354        Type = DT_FIELD_TYPE_FLAG;
355        break;
356
357    case ACPI_DMT_NAME4:
358    case ACPI_DMT_SIG:
359    case ACPI_DMT_NAME6:
360    case ACPI_DMT_NAME8:
361    case ACPI_DMT_STRING:
362
363        Type = DT_FIELD_TYPE_STRING;
364        break;
365
366    case ACPI_DMT_BUFFER:
367    case ACPI_DMT_RAW_BUFFER:
368    case ACPI_DMT_BUF7:
369    case ACPI_DMT_BUF10:
370    case ACPI_DMT_BUF16:
371    case ACPI_DMT_BUF128:
372    case ACPI_DMT_PCI_PATH:
373
374        Type = DT_FIELD_TYPE_BUFFER;
375        break;
376
377    case ACPI_DMT_GAS:
378    case ACPI_DMT_HESTNTFY:
379    case ACPI_DMT_IORTMEM:
380
381        Type = DT_FIELD_TYPE_INLINE_SUBTABLE;
382        break;
383
384    case ACPI_DMT_UNICODE:
385
386        Type = DT_FIELD_TYPE_UNICODE;
387        break;
388
389    case ACPI_DMT_UUID:
390
391        Type = DT_FIELD_TYPE_UUID;
392        break;
393
394    case ACPI_DMT_DEVICE_PATH:
395
396        Type = DT_FIELD_TYPE_DEVICE_PATH;
397        break;
398
399    case ACPI_DMT_LABEL:
400
401        Type = DT_FIELD_TYPE_LABEL;
402        break;
403
404    default:
405
406        Type = DT_FIELD_TYPE_INTEGER;
407        break;
408    }
409
410    return (Type);
411}
412
413
414/******************************************************************************
415 *
416 * FUNCTION:    DtGetBufferLength
417 *
418 * PARAMETERS:  Buffer              - List of integers,
419 *                                    for example "10 3A 4F 2E"
420 *
421 * RETURN:      Count of integer
422 *
423 * DESCRIPTION: Get length of bytes needed to store the integers
424 *
425 *****************************************************************************/
426
427UINT32
428DtGetBufferLength (
429    char                    *Buffer)
430{
431    UINT32                  ByteLength = 0;
432
433
434    while (*Buffer)
435    {
436        if (*Buffer == ' ')
437        {
438            ByteLength++;
439
440            while (*Buffer == ' ')
441            {
442                Buffer++;
443            }
444        }
445
446        Buffer++;
447    }
448
449    return (++ByteLength);
450}
451
452
453/******************************************************************************
454 *
455 * FUNCTION:    DtGetFieldLength
456 *
457 * PARAMETERS:  Field               - Current field
458 *              Info                - Data table info
459 *
460 * RETURN:      Field length
461 *
462 * DESCRIPTION: Get length of bytes needed to compile the field
463 *
464 * Note: This function must remain in sync with AcpiDmDumpTable.
465 *
466 *****************************************************************************/
467
468UINT32
469DtGetFieldLength (
470    DT_FIELD                *Field,
471    ACPI_DMTABLE_INFO       *Info)
472{
473    UINT32                  ByteLength = 0;
474    char                    *Value;
475
476
477    /* Length is based upon the opcode for this field in the info table */
478
479    switch (Info->Opcode)
480    {
481    case ACPI_DMT_FLAG0:
482    case ACPI_DMT_FLAG1:
483    case ACPI_DMT_FLAG2:
484    case ACPI_DMT_FLAG3:
485    case ACPI_DMT_FLAG4:
486    case ACPI_DMT_FLAG5:
487    case ACPI_DMT_FLAG6:
488    case ACPI_DMT_FLAG7:
489    case ACPI_DMT_FLAGS0:
490    case ACPI_DMT_FLAGS1:
491    case ACPI_DMT_FLAGS2:
492    case ACPI_DMT_FLAGS4:
493    case ACPI_DMT_LABEL:
494    case ACPI_DMT_EXTRA_TEXT:
495
496        ByteLength = 0;
497        break;
498
499    case ACPI_DMT_UINT8:
500    case ACPI_DMT_CHKSUM:
501    case ACPI_DMT_SPACEID:
502    case ACPI_DMT_ACCWIDTH:
503    case ACPI_DMT_IVRS:
504    case ACPI_DMT_GTDT:
505    case ACPI_DMT_MADT:
506    case ACPI_DMT_PCCT:
507    case ACPI_DMT_PMTT:
508    case ACPI_DMT_SRAT:
509    case ACPI_DMT_ASF:
510    case ACPI_DMT_HESTNTYP:
511    case ACPI_DMT_FADTPM:
512    case ACPI_DMT_EINJACT:
513    case ACPI_DMT_EINJINST:
514    case ACPI_DMT_ERSTACT:
515    case ACPI_DMT_ERSTINST:
516    case ACPI_DMT_DMAR_SCOPE:
517
518        ByteLength = 1;
519        break;
520
521    case ACPI_DMT_UINT16:
522    case ACPI_DMT_DMAR:
523    case ACPI_DMT_HEST:
524    case ACPI_DMT_NFIT:
525    case ACPI_DMT_PCI_PATH:
526
527        ByteLength = 2;
528        break;
529
530    case ACPI_DMT_UINT24:
531
532        ByteLength = 3;
533        break;
534
535    case ACPI_DMT_UINT32:
536    case ACPI_DMT_NAME4:
537    case ACPI_DMT_SIG:
538    case ACPI_DMT_LPIT:
539
540        ByteLength = 4;
541        break;
542
543    case ACPI_DMT_UINT40:
544
545        ByteLength = 5;
546        break;
547
548    case ACPI_DMT_UINT48:
549    case ACPI_DMT_NAME6:
550
551        ByteLength = 6;
552        break;
553
554    case ACPI_DMT_UINT56:
555    case ACPI_DMT_BUF7:
556
557        ByteLength = 7;
558        break;
559
560    case ACPI_DMT_UINT64:
561    case ACPI_DMT_NAME8:
562
563        ByteLength = 8;
564        break;
565
566    case ACPI_DMT_STRING:
567
568        Value = DtGetFieldValue (Field);
569        if (Value)
570        {
571            ByteLength = strlen (Value) + 1;
572        }
573        else
574        {   /* At this point, this is a fatal error */
575
576            sprintf (MsgBuffer, "Expected \"%s\"", Info->Name);
577            DtFatal (ASL_MSG_COMPILER_INTERNAL, NULL, MsgBuffer);
578            return (0);
579        }
580        break;
581
582    case ACPI_DMT_GAS:
583
584        ByteLength = sizeof (ACPI_GENERIC_ADDRESS);
585        break;
586
587    case ACPI_DMT_HESTNTFY:
588
589        ByteLength = sizeof (ACPI_HEST_NOTIFY);
590        break;
591
592    case ACPI_DMT_IORTMEM:
593
594        ByteLength = sizeof (ACPI_IORT_MEMORY_ACCESS);
595        break;
596
597    case ACPI_DMT_BUFFER:
598    case ACPI_DMT_RAW_BUFFER:
599
600        Value = DtGetFieldValue (Field);
601        if (Value)
602        {
603            ByteLength = DtGetBufferLength (Value);
604        }
605        else
606        {   /* At this point, this is a fatal error */
607
608            sprintf (MsgBuffer, "Expected \"%s\"", Info->Name);
609            DtFatal (ASL_MSG_COMPILER_INTERNAL, NULL, MsgBuffer);
610            return (0);
611        }
612        break;
613
614    case ACPI_DMT_BUF10:
615
616        ByteLength = 10;
617        break;
618
619    case ACPI_DMT_BUF16:
620    case ACPI_DMT_UUID:
621
622        ByteLength = 16;
623        break;
624
625    case ACPI_DMT_BUF128:
626
627        ByteLength = 128;
628        break;
629
630    case ACPI_DMT_UNICODE:
631
632        Value = DtGetFieldValue (Field);
633
634        /* TBD: error if Value is NULL? (as below?) */
635
636        ByteLength = (strlen (Value) + 1) * sizeof(UINT16);
637        break;
638
639    default:
640
641        DtFatal (ASL_MSG_COMPILER_INTERNAL, Field, "Invalid table opcode");
642        return (0);
643    }
644
645    return (ByteLength);
646}
647
648
649/******************************************************************************
650 *
651 * FUNCTION:    DtSum
652 *
653 * PARAMETERS:  DT_WALK_CALLBACK:
654 *              Subtable            - Subtable
655 *              Context             - Unused
656 *              ReturnValue         - Store the checksum of subtable
657 *
658 * RETURN:      Status
659 *
660 * DESCRIPTION: Get the checksum of subtable
661 *
662 *****************************************************************************/
663
664static void
665DtSum (
666    DT_SUBTABLE             *Subtable,
667    void                    *Context,
668    void                    *ReturnValue)
669{
670    UINT8                   Checksum;
671    UINT8                   *Sum = ReturnValue;
672
673
674    Checksum = AcpiTbChecksum (Subtable->Buffer, Subtable->Length);
675    *Sum = (UINT8) (*Sum + Checksum);
676}
677
678
679/******************************************************************************
680 *
681 * FUNCTION:    DtSetTableChecksum
682 *
683 * PARAMETERS:  ChecksumPointer     - Where to return the checksum
684 *
685 * RETURN:      None
686 *
687 * DESCRIPTION: Set checksum of the whole data table into the checksum field
688 *
689 *****************************************************************************/
690
691void
692DtSetTableChecksum (
693    UINT8                   *ChecksumPointer)
694{
695    UINT8                   Checksum = 0;
696    UINT8                   OldSum;
697
698
699    DtWalkTableTree (Gbl_RootTable, DtSum, NULL, &Checksum);
700
701    OldSum = *ChecksumPointer;
702    Checksum = (UINT8) (Checksum - OldSum);
703
704    /* Compute the final checksum */
705
706    Checksum = (UINT8) (0 - Checksum);
707    *ChecksumPointer = Checksum;
708}
709
710
711/******************************************************************************
712 *
713 * FUNCTION:    DtSetTableLength
714 *
715 * PARAMETERS:  None
716 *
717 * RETURN:      None
718 *
719 * DESCRIPTION: Walk the subtables and set all the length fields
720 *
721 *****************************************************************************/
722
723void
724DtSetTableLength (
725    void)
726{
727    DT_SUBTABLE             *ParentTable;
728    DT_SUBTABLE             *ChildTable;
729
730
731    ParentTable = Gbl_RootTable;
732    ChildTable = NULL;
733
734    if (!ParentTable)
735    {
736        return;
737    }
738
739    DtSetSubtableLength (ParentTable);
740
741    while (1)
742    {
743        ChildTable = DtGetNextSubtable (ParentTable, ChildTable);
744        if (ChildTable)
745        {
746            if (ChildTable->LengthField)
747            {
748                DtSetSubtableLength (ChildTable);
749            }
750
751            if (ChildTable->Child)
752            {
753                ParentTable = ChildTable;
754                ChildTable = NULL;
755            }
756            else
757            {
758                ParentTable->TotalLength += ChildTable->TotalLength;
759                if (ParentTable->LengthField)
760                {
761                    DtSetSubtableLength (ParentTable);
762                }
763            }
764        }
765        else
766        {
767            ChildTable = ParentTable;
768
769            if (ChildTable == Gbl_RootTable)
770            {
771                break;
772            }
773
774            ParentTable = DtGetParentSubtable (ParentTable);
775
776            ParentTable->TotalLength += ChildTable->TotalLength;
777            if (ParentTable->LengthField)
778            {
779                DtSetSubtableLength (ParentTable);
780            }
781        }
782    }
783}
784
785
786/******************************************************************************
787 *
788 * FUNCTION:    DtWalkTableTree
789 *
790 * PARAMETERS:  StartTable          - Subtable in the tree where walking begins
791 *              UserFunction        - Called during the walk
792 *              Context             - Passed to user function
793 *              ReturnValue         - The return value of UserFunction
794 *
795 * RETURN:      None
796 *
797 * DESCRIPTION: Performs a depth-first walk of the subtable tree
798 *
799 *****************************************************************************/
800
801void
802DtWalkTableTree (
803    DT_SUBTABLE             *StartTable,
804    DT_WALK_CALLBACK        UserFunction,
805    void                    *Context,
806    void                    *ReturnValue)
807{
808    DT_SUBTABLE             *ParentTable;
809    DT_SUBTABLE             *ChildTable;
810
811
812    ParentTable = StartTable;
813    ChildTable = NULL;
814
815    if (!ParentTable)
816    {
817        return;
818    }
819
820    UserFunction (ParentTable, Context, ReturnValue);
821
822    while (1)
823    {
824        ChildTable = DtGetNextSubtable (ParentTable, ChildTable);
825        if (ChildTable)
826        {
827            UserFunction (ChildTable, Context, ReturnValue);
828
829            if (ChildTable->Child)
830            {
831                ParentTable = ChildTable;
832                ChildTable = NULL;
833            }
834        }
835        else
836        {
837            ChildTable = ParentTable;
838            if (ChildTable == Gbl_RootTable)
839            {
840                break;
841            }
842
843            ParentTable = DtGetParentSubtable (ParentTable);
844
845            if (ChildTable->Peer == StartTable)
846            {
847                break;
848            }
849        }
850    }
851}
852
853
854/*******************************************************************************
855 *
856 * FUNCTION:    UtSubtableCacheCalloc
857 *
858 * PARAMETERS:  None
859 *
860 * RETURN:      Pointer to the buffer. Aborts on allocation failure
861 *
862 * DESCRIPTION: Allocate a subtable object buffer. Bypass the local
863 *              dynamic memory manager for performance reasons (This has a
864 *              major impact on the speed of the compiler.)
865 *
866 ******************************************************************************/
867
868DT_SUBTABLE *
869UtSubtableCacheCalloc (
870    void)
871{
872    ASL_CACHE_INFO          *Cache;
873
874
875    if (Gbl_SubtableCacheNext >= Gbl_SubtableCacheLast)
876    {
877        /* Allocate a new buffer */
878
879        Cache = UtLocalCalloc (sizeof (Cache->Next) +
880            (sizeof (DT_SUBTABLE) * ASL_SUBTABLE_CACHE_SIZE));
881
882        /* Link new cache buffer to head of list */
883
884        Cache->Next = Gbl_SubtableCacheList;
885        Gbl_SubtableCacheList = Cache;
886
887        /* Setup cache management pointers */
888
889        Gbl_SubtableCacheNext = ACPI_CAST_PTR (DT_SUBTABLE, Cache->Buffer);
890        Gbl_SubtableCacheLast = Gbl_SubtableCacheNext + ASL_SUBTABLE_CACHE_SIZE;
891    }
892
893    Gbl_SubtableCount++;
894    return (Gbl_SubtableCacheNext++);
895}
896
897
898/*******************************************************************************
899 *
900 * FUNCTION:    UtFieldCacheCalloc
901 *
902 * PARAMETERS:  None
903 *
904 * RETURN:      Pointer to the buffer. Aborts on allocation failure
905 *
906 * DESCRIPTION: Allocate a field object buffer. Bypass the local
907 *              dynamic memory manager for performance reasons (This has a
908 *              major impact on the speed of the compiler.)
909 *
910 ******************************************************************************/
911
912DT_FIELD *
913UtFieldCacheCalloc (
914    void)
915{
916    ASL_CACHE_INFO          *Cache;
917
918
919    if (Gbl_FieldCacheNext >= Gbl_FieldCacheLast)
920    {
921        /* Allocate a new buffer */
922
923        Cache = UtLocalCalloc (sizeof (Cache->Next) +
924            (sizeof (DT_FIELD) * ASL_FIELD_CACHE_SIZE));
925
926        /* Link new cache buffer to head of list */
927
928        Cache->Next = Gbl_FieldCacheList;
929        Gbl_FieldCacheList = Cache;
930
931        /* Setup cache management pointers */
932
933        Gbl_FieldCacheNext = ACPI_CAST_PTR (DT_FIELD, Cache->Buffer);
934        Gbl_FieldCacheLast = Gbl_FieldCacheNext + ASL_FIELD_CACHE_SIZE;
935    }
936
937    Gbl_FieldCount++;
938    return (Gbl_FieldCacheNext++);
939}
940
941
942/*******************************************************************************
943 *
944 * FUNCTION:    DtDeleteCaches
945 *
946 * PARAMETERS:  None
947 *
948 * RETURN:      None
949 *
950 * DESCRIPTION: Delete all local cache buffer blocks
951 *
952 ******************************************************************************/
953
954void
955DtDeleteCaches (
956    void)
957{
958    UINT32                  BufferCount;
959    ASL_CACHE_INFO          *Next;
960
961
962    /* Field cache */
963
964    BufferCount = 0;
965    while (Gbl_FieldCacheList)
966    {
967        Next = Gbl_FieldCacheList->Next;
968        ACPI_FREE (Gbl_FieldCacheList);
969        Gbl_FieldCacheList = Next;
970        BufferCount++;
971    }
972
973    DbgPrint (ASL_DEBUG_OUTPUT,
974        "%u Fields, Buffer size: %u fields (%u bytes), %u Buffers\n",
975        Gbl_FieldCount, ASL_FIELD_CACHE_SIZE,
976        (sizeof (DT_FIELD) * ASL_FIELD_CACHE_SIZE), BufferCount);
977
978    Gbl_FieldCount = 0;
979    Gbl_FieldCacheNext = NULL;
980    Gbl_FieldCacheLast = NULL;
981
982    /* Subtable cache */
983
984    BufferCount = 0;
985    while (Gbl_SubtableCacheList)
986    {
987        Next = Gbl_SubtableCacheList->Next;
988        ACPI_FREE (Gbl_SubtableCacheList);
989        Gbl_SubtableCacheList = Next;
990        BufferCount++;
991    }
992
993    DbgPrint (ASL_DEBUG_OUTPUT,
994        "%u Subtables, Buffer size: %u subtables (%u bytes), %u Buffers\n",
995        Gbl_SubtableCount, ASL_SUBTABLE_CACHE_SIZE,
996        (sizeof (DT_SUBTABLE) * ASL_SUBTABLE_CACHE_SIZE), BufferCount);
997
998    Gbl_SubtableCount = 0;
999    Gbl_SubtableCacheNext = NULL;
1000    Gbl_SubtableCacheLast = NULL;
1001}
1002