1/******************************************************************************
2 *
3 * Module Name: utclib - ACPICA implementations of C library functions
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#define ACPI_CLIBRARY
153#include "acpi.h"
154#include "accommon.h"
155
156/*
157 * This module contains implementations of the standard C library functions
158 * that are required by the ACPICA code at both application level and kernel
159 * level.
160 *
161 * The module is an optional feature that can be used if a local/system
162 * C library is not available. Some operating system kernels may not have
163 * an internal C library.
164 *
165 * In general, these functions are less efficient than an inline or assembly
166 * code implementation.
167 *
168 * These C functions and the associated prototypes are enabled by default
169 * unless the ACPI_USE_SYSTEM_CLIBRARY symbol is defined. This is usually
170 * automatically defined for the ACPICA applications such as iASL and
171 * AcpiExec, so that these user-level applications use the local C library
172 * instead of the functions in this module.
173 */
174
175/*******************************************************************************
176 *
177 * Functions implemented in this module:
178 *
179 * FUNCTION:    memcmp
180 * FUNCTION:    memcpy
181 * FUNCTION:    memset
182 * FUNCTION:    strlen
183 * FUNCTION:    strcpy
184 * FUNCTION:    strncpy
185 * FUNCTION:    strcmp
186 * FUNCTION:    strchr
187 * FUNCTION:    strncmp
188 * FUNCTION:    strcat
189 * FUNCTION:    strncat
190 * FUNCTION:    strstr
191 * FUNCTION:    strtoul
192 * FUNCTION:    toupper
193 * FUNCTION:    tolower
194 * FUNCTION:    is* functions
195 *
196 ******************************************************************************/
197
198#define _COMPONENT          ACPI_UTILITIES
199        ACPI_MODULE_NAME    ("utclib")
200
201
202#ifndef ACPI_USE_SYSTEM_CLIBRARY    /* Entire module */
203
204
205/*******************************************************************************
206 *
207 * FUNCTION:    memcmp
208 *
209 * PARAMETERS:  Buffer1         - First Buffer
210 *              Buffer2         - Second Buffer
211 *              Count           - Maximum # of bytes to compare
212 *
213 * RETURN:      Index where Buffers mismatched, or 0 if Buffers matched
214 *
215 * DESCRIPTION: Compare two Buffers, with a maximum length
216 *
217 ******************************************************************************/
218
219int
220memcmp (
221    void                    *VBuffer1,
222    void                    *VBuffer2,
223    ACPI_SIZE               Count)
224{
225    char                    *Buffer1 = (char *) VBuffer1;
226    char                    *Buffer2 = (char *) VBuffer2;
227
228
229    for ( ; Count-- && (*Buffer1 == *Buffer2); Buffer1++, Buffer2++)
230    {
231    }
232
233    return ((Count == ACPI_SIZE_MAX) ? 0 : ((unsigned char) *Buffer1 -
234        (unsigned char) *Buffer2));
235}
236
237
238/*******************************************************************************
239 *
240 * FUNCTION:    memmove
241 *
242 * PARAMETERS:  Dest        - Target of the copy
243 *              Src         - Source buffer to copy
244 *              Count       - Number of bytes to copy
245 *
246 * RETURN:      Dest
247 *
248 * DESCRIPTION: Copy arbitrary bytes of memory with respect to the overlapping
249 *
250 ******************************************************************************/
251
252void *
253memmove (
254    void                    *Dest,
255    const void              *Src,
256    ACPI_SIZE               Count)
257{
258    char                    *New = (char *) Dest;
259    char                    *Old = (char *) Src;
260
261
262    if (Old > New)
263    {
264        /* Copy from the beginning */
265
266        while (Count)
267        {
268            *New = *Old;
269            New++;
270            Old++;
271            Count--;
272        }
273    }
274    else if (Old < New)
275    {
276        /* Copy from the end */
277
278        New = New + Count - 1;
279        Old = Old + Count - 1;
280        while (Count)
281        {
282            *New = *Old;
283            New--;
284            Old--;
285            Count--;
286        }
287    }
288
289    return (Dest);
290}
291
292
293/*******************************************************************************
294 *
295 * FUNCTION:    memcpy
296 *
297 * PARAMETERS:  Dest        - Target of the copy
298 *              Src         - Source buffer to copy
299 *              Count       - Number of bytes to copy
300 *
301 * RETURN:      Dest
302 *
303 * DESCRIPTION: Copy arbitrary bytes of memory
304 *
305 ******************************************************************************/
306
307void *
308memcpy (
309    void                    *Dest,
310    const void              *Src,
311    ACPI_SIZE               Count)
312{
313    char                    *New = (char *) Dest;
314    char                    *Old = (char *) Src;
315
316
317    while (Count)
318    {
319        *New = *Old;
320        New++;
321        Old++;
322        Count--;
323    }
324
325    return (Dest);
326}
327
328
329/*******************************************************************************
330 *
331 * FUNCTION:    memset
332 *
333 * PARAMETERS:  Dest        - Buffer to set
334 *              Value       - Value to set each byte of memory
335 *              Count       - Number of bytes to set
336 *
337 * RETURN:      Dest
338 *
339 * DESCRIPTION: Initialize a buffer to a known value.
340 *
341 ******************************************************************************/
342
343void *
344memset (
345    void                    *Dest,
346    int                     Value,
347    ACPI_SIZE               Count)
348{
349    char                    *New = (char *) Dest;
350
351
352    while (Count)
353    {
354        *New = (char) Value;
355        New++;
356        Count--;
357    }
358
359    return (Dest);
360}
361
362
363/*******************************************************************************
364 *
365 * FUNCTION:    strlen
366 *
367 * PARAMETERS:  String              - Null terminated string
368 *
369 * RETURN:      Length
370 *
371 * DESCRIPTION: Returns the length of the input string
372 *
373 ******************************************************************************/
374
375
376ACPI_SIZE
377strlen (
378    const char              *String)
379{
380    UINT32                  Length = 0;
381
382
383    /* Count the string until a null is encountered */
384
385    while (*String)
386    {
387        Length++;
388        String++;
389    }
390
391    return (Length);
392}
393
394
395/*******************************************************************************
396 *
397 * FUNCTION:    strpbrk
398 *
399 * PARAMETERS:  String              - Null terminated string
400 *              Delimiters          - Delimiters to match
401 *
402 * RETURN:      The first occurance in the string of any of the bytes in the
403 *              delimiters
404 *
405 * DESCRIPTION: Search a string for any of a set of the delimiters
406 *
407 ******************************************************************************/
408
409char *
410strpbrk (
411    const char              *String,
412    const char              *Delimiters)
413{
414    const char              *Delimiter;
415
416
417    for ( ; *String != '\0'; ++String)
418    {
419        for (Delimiter = Delimiters; *Delimiter != '\0'; Delimiter++)
420        {
421            if (*String == *Delimiter)
422            {
423                return (ACPI_CAST_PTR (char, String));
424            }
425        }
426    }
427
428    return (NULL);
429}
430
431
432/*******************************************************************************
433 *
434 * FUNCTION:    strtok
435 *
436 * PARAMETERS:  String              - Null terminated string
437 *              Delimiters          - Delimiters to match
438 *
439 * RETURN:      Pointer to the next token
440 *
441 * DESCRIPTION: Split string into tokens
442 *
443 ******************************************************************************/
444
445char*
446strtok (
447    char                    *String,
448    const char              *Delimiters)
449{
450    char                    *Begin = String;
451    static char             *SavedPtr;
452
453
454    if (Begin == NULL)
455    {
456        if (SavedPtr == NULL)
457        {
458            return (NULL);
459        }
460        Begin = SavedPtr;
461    }
462
463    SavedPtr = strpbrk (Begin, Delimiters);
464    while (SavedPtr == Begin)
465    {
466        *Begin++ = '\0';
467        SavedPtr = strpbrk (Begin, Delimiters);
468    }
469
470    if (SavedPtr)
471    {
472        *SavedPtr++ = '\0';
473        return (Begin);
474    }
475    else
476    {
477        return (NULL);
478    }
479}
480
481
482/*******************************************************************************
483 *
484 * FUNCTION:    strcpy
485 *
486 * PARAMETERS:  DstString       - Target of the copy
487 *              SrcString       - The source string to copy
488 *
489 * RETURN:      DstString
490 *
491 * DESCRIPTION: Copy a null terminated string
492 *
493 ******************************************************************************/
494
495char *
496strcpy (
497    char                    *DstString,
498    const char              *SrcString)
499{
500    char                    *String = DstString;
501
502
503    /* Move bytes brute force */
504
505    while (*SrcString)
506    {
507        *String = *SrcString;
508
509        String++;
510        SrcString++;
511    }
512
513    /* Null terminate */
514
515    *String = 0;
516    return (DstString);
517}
518
519
520/*******************************************************************************
521 *
522 * FUNCTION:    strncpy
523 *
524 * PARAMETERS:  DstString       - Target of the copy
525 *              SrcString       - The source string to copy
526 *              Count           - Maximum # of bytes to copy
527 *
528 * RETURN:      DstString
529 *
530 * DESCRIPTION: Copy a null terminated string, with a maximum length
531 *
532 ******************************************************************************/
533
534char *
535strncpy (
536    char                    *DstString,
537    const char              *SrcString,
538    ACPI_SIZE               Count)
539{
540    char                    *String = DstString;
541
542
543    /* Copy the string */
544
545    for (String = DstString;
546        Count && (Count--, (*String++ = *SrcString++)); )
547    {;}
548
549    /* Pad with nulls if necessary */
550
551    while (Count--)
552    {
553        *String = 0;
554        String++;
555    }
556
557    /* Return original pointer */
558
559    return (DstString);
560}
561
562
563/*******************************************************************************
564 *
565 * FUNCTION:    strcmp
566 *
567 * PARAMETERS:  String1         - First string
568 *              String2         - Second string
569 *
570 * RETURN:      Index where strings mismatched, or 0 if strings matched
571 *
572 * DESCRIPTION: Compare two null terminated strings
573 *
574 ******************************************************************************/
575
576int
577strcmp (
578    const char              *String1,
579    const char              *String2)
580{
581
582
583    for ( ; (*String1 == *String2); String2++)
584    {
585        if (!*String1++)
586        {
587            return (0);
588        }
589    }
590
591    return ((unsigned char) *String1 - (unsigned char) *String2);
592}
593
594
595/*******************************************************************************
596 *
597 * FUNCTION:    strchr
598 *
599 * PARAMETERS:  String          - Search string
600 *              ch              - character to search for
601 *
602 * RETURN:      Ptr to char or NULL if not found
603 *
604 * DESCRIPTION: Search a string for a character
605 *
606 ******************************************************************************/
607
608char *
609strchr (
610    const char              *String,
611    int                     ch)
612{
613
614
615    for ( ; (*String); String++)
616    {
617        if ((*String) == (char) ch)
618        {
619            return ((char *) String);
620        }
621    }
622
623    return (NULL);
624}
625
626
627/*******************************************************************************
628 *
629 * FUNCTION:    strncmp
630 *
631 * PARAMETERS:  String1         - First string
632 *              String2         - Second string
633 *              Count           - Maximum # of bytes to compare
634 *
635 * RETURN:      Index where strings mismatched, or 0 if strings matched
636 *
637 * DESCRIPTION: Compare two null terminated strings, with a maximum length
638 *
639 ******************************************************************************/
640
641int
642strncmp (
643    const char              *String1,
644    const char              *String2,
645    ACPI_SIZE               Count)
646{
647
648
649    for ( ; Count-- && (*String1 == *String2); String2++)
650    {
651        if (!*String1++)
652        {
653            return (0);
654        }
655    }
656
657    return ((Count == ACPI_SIZE_MAX) ? 0 : ((unsigned char) *String1 -
658        (unsigned char) *String2));
659}
660
661
662/*******************************************************************************
663 *
664 * FUNCTION:    strcat
665 *
666 * PARAMETERS:  DstString       - Target of the copy
667 *              SrcString       - The source string to copy
668 *
669 * RETURN:      DstString
670 *
671 * DESCRIPTION: Append a null terminated string to a null terminated string
672 *
673 ******************************************************************************/
674
675char *
676strcat (
677    char                    *DstString,
678    const char              *SrcString)
679{
680    char                    *String;
681
682
683    /* Find end of the destination string */
684
685    for (String = DstString; *String++; )
686    { ; }
687
688    /* Concatenate the string */
689
690    for (--String; (*String++ = *SrcString++); )
691    { ; }
692
693    return (DstString);
694}
695
696
697/*******************************************************************************
698 *
699 * FUNCTION:    strncat
700 *
701 * PARAMETERS:  DstString       - Target of the copy
702 *              SrcString       - The source string to copy
703 *              Count           - Maximum # of bytes to copy
704 *
705 * RETURN:      DstString
706 *
707 * DESCRIPTION: Append a null terminated string to a null terminated string,
708 *              with a maximum count.
709 *
710 ******************************************************************************/
711
712char *
713strncat (
714    char                    *DstString,
715    const char              *SrcString,
716    ACPI_SIZE               Count)
717{
718    char                    *String;
719
720
721    if (Count)
722    {
723        /* Find end of the destination string */
724
725        for (String = DstString; *String++; )
726        { ; }
727
728        /* Concatenate the string */
729
730        for (--String; (*String++ = *SrcString++) && --Count; )
731        { ; }
732
733        /* Null terminate if necessary */
734
735        if (!Count)
736        {
737            *String = 0;
738        }
739    }
740
741    return (DstString);
742}
743
744
745/*******************************************************************************
746 *
747 * FUNCTION:    strstr
748 *
749 * PARAMETERS:  String1         - Target string
750 *              String2         - Substring to search for
751 *
752 * RETURN:      Where substring match starts, Null if no match found
753 *
754 * DESCRIPTION: Checks if String2 occurs in String1. This is not really a
755 *              full implementation of strstr, only sufficient for command
756 *              matching
757 *
758 ******************************************************************************/
759
760char *
761strstr (
762    char                    *String1,
763    char                    *String2)
764{
765    ACPI_SIZE               Length;
766
767
768    Length = strlen (String2);
769    if (!Length)
770    {
771        return (String1);
772    }
773
774    while (strlen (String1) >= Length)
775    {
776        if (memcmp (String1, String2, Length) == 0)
777        {
778            return (String1);
779        }
780        String1++;
781    }
782
783    return (NULL);
784}
785
786
787/*******************************************************************************
788 *
789 * FUNCTION:    strtoul
790 *
791 * PARAMETERS:  String          - Null terminated string
792 *              Terminater      - Where a pointer to the terminating byte is
793 *                                returned
794 *              Base            - Radix of the string
795 *
796 * RETURN:      Converted value
797 *
798 * DESCRIPTION: Convert a string into a 32-bit unsigned value.
799 *              Note: use strtoul64 for 64-bit integers.
800 *
801 ******************************************************************************/
802
803UINT32
804strtoul (
805    const char              *String,
806    char                    **Terminator,
807    UINT32                  Base)
808{
809    UINT32                  converted = 0;
810    UINT32                  index;
811    UINT32                  sign;
812    const char              *StringStart;
813    UINT32                  ReturnValue = 0;
814    ACPI_STATUS             Status = AE_OK;
815
816
817    /*
818     * Save the value of the pointer to the buffer's first
819     * character, save the current errno value, and then
820     * skip over any white space in the buffer:
821     */
822    StringStart = String;
823    while (isspace (*String) || *String == '\t')
824    {
825        ++String;
826    }
827
828    /*
829     * The buffer may contain an optional plus or minus sign.
830     * If it does, then skip over it but remember what is was:
831     */
832    if (*String == '-')
833    {
834        sign = ACPI_SIGN_NEGATIVE;
835        ++String;
836    }
837    else if (*String == '+')
838    {
839        ++String;
840        sign = ACPI_SIGN_POSITIVE;
841    }
842    else
843    {
844        sign = ACPI_SIGN_POSITIVE;
845    }
846
847    /*
848     * If the input parameter Base is zero, then we need to
849     * determine if it is octal, decimal, or hexadecimal:
850     */
851    if (Base == 0)
852    {
853        if (*String == '0')
854        {
855            if (tolower (*(++String)) == 'x')
856            {
857                Base = 16;
858                ++String;
859            }
860            else
861            {
862                Base = 8;
863            }
864        }
865        else
866        {
867            Base = 10;
868        }
869    }
870    else if (Base < 2 || Base > 36)
871    {
872        /*
873         * The specified Base parameter is not in the domain of
874         * this function:
875         */
876        goto done;
877    }
878
879    /*
880     * For octal and hexadecimal bases, skip over the leading
881     * 0 or 0x, if they are present.
882     */
883    if (Base == 8 && *String == '0')
884    {
885        String++;
886    }
887
888    if (Base == 16 &&
889        *String == '0' &&
890        tolower (*(++String)) == 'x')
891    {
892        String++;
893    }
894
895    /*
896     * Main loop: convert the string to an unsigned long:
897     */
898    while (*String)
899    {
900        if (isdigit (*String))
901        {
902            index = (UINT32) ((UINT8) *String - '0');
903        }
904        else
905        {
906            index = (UINT32) toupper (*String);
907            if (isupper (index))
908            {
909                index = index - 'A' + 10;
910            }
911            else
912            {
913                goto done;
914            }
915        }
916
917        if (index >= Base)
918        {
919            goto done;
920        }
921
922        /*
923         * Check to see if value is out of range:
924         */
925
926        if (ReturnValue > ((ACPI_UINT32_MAX - (UINT32) index) /
927                            (UINT32) Base))
928        {
929            Status = AE_ERROR;
930            ReturnValue = 0;           /* reset */
931        }
932        else
933        {
934            ReturnValue *= Base;
935            ReturnValue += index;
936            converted = 1;
937        }
938
939        ++String;
940    }
941
942done:
943    /*
944     * If appropriate, update the caller's pointer to the next
945     * unconverted character in the buffer.
946     */
947    if (Terminator)
948    {
949        if (converted == 0 && ReturnValue == 0 && String != NULL)
950        {
951            *Terminator = (char *) StringStart;
952        }
953        else
954        {
955            *Terminator = (char *) String;
956        }
957    }
958
959    if (Status == AE_ERROR)
960    {
961        ReturnValue = ACPI_UINT32_MAX;
962    }
963
964    /*
965     * If a minus sign was present, then "the conversion is negated":
966     */
967    if (sign == ACPI_SIGN_NEGATIVE)
968    {
969        ReturnValue = (ACPI_UINT32_MAX - ReturnValue) + 1;
970    }
971
972    return (ReturnValue);
973}
974
975
976/*******************************************************************************
977 *
978 * FUNCTION:    toupper
979 *
980 * PARAMETERS:  c           - Character to convert
981 *
982 * RETURN:      Converted character as an int
983 *
984 * DESCRIPTION: Convert character to uppercase
985 *
986 ******************************************************************************/
987
988int
989toupper (
990    int                     c)
991{
992
993    return (islower(c) ? ((c)-0x20) : (c));
994}
995
996
997/*******************************************************************************
998 *
999 * FUNCTION:    tolower
1000 *
1001 * PARAMETERS:  c           - Character to convert
1002 *
1003 * RETURN:      Converted character as an int
1004 *
1005 * DESCRIPTION: Convert character to lowercase
1006 *
1007 ******************************************************************************/
1008
1009int
1010tolower (
1011    int                     c)
1012{
1013
1014    return (isupper(c) ? ((c)+0x20) : (c));
1015}
1016
1017
1018/*******************************************************************************
1019 *
1020 * FUNCTION:    is* function array
1021 *
1022 * DESCRIPTION: is* functions use the ctype table below
1023 *
1024 ******************************************************************************/
1025
1026const UINT8 AcpiGbl_Ctypes[257] = {
1027    _ACPI_CN,            /* 0x00     0 NUL */
1028    _ACPI_CN,            /* 0x01     1 SOH */
1029    _ACPI_CN,            /* 0x02     2 STX */
1030    _ACPI_CN,            /* 0x03     3 ETX */
1031    _ACPI_CN,            /* 0x04     4 EOT */
1032    _ACPI_CN,            /* 0x05     5 ENQ */
1033    _ACPI_CN,            /* 0x06     6 ACK */
1034    _ACPI_CN,            /* 0x07     7 BEL */
1035    _ACPI_CN,            /* 0x08     8 BS  */
1036    _ACPI_CN|_ACPI_SP,   /* 0x09     9 TAB */
1037    _ACPI_CN|_ACPI_SP,   /* 0x0A    10 LF  */
1038    _ACPI_CN|_ACPI_SP,   /* 0x0B    11 VT  */
1039    _ACPI_CN|_ACPI_SP,   /* 0x0C    12 FF  */
1040    _ACPI_CN|_ACPI_SP,   /* 0x0D    13 CR  */
1041    _ACPI_CN,            /* 0x0E    14 SO  */
1042    _ACPI_CN,            /* 0x0F    15 SI  */
1043    _ACPI_CN,            /* 0x10    16 DLE */
1044    _ACPI_CN,            /* 0x11    17 DC1 */
1045    _ACPI_CN,            /* 0x12    18 DC2 */
1046    _ACPI_CN,            /* 0x13    19 DC3 */
1047    _ACPI_CN,            /* 0x14    20 DC4 */
1048    _ACPI_CN,            /* 0x15    21 NAK */
1049    _ACPI_CN,            /* 0x16    22 SYN */
1050    _ACPI_CN,            /* 0x17    23 ETB */
1051    _ACPI_CN,            /* 0x18    24 CAN */
1052    _ACPI_CN,            /* 0x19    25 EM  */
1053    _ACPI_CN,            /* 0x1A    26 SUB */
1054    _ACPI_CN,            /* 0x1B    27 ESC */
1055    _ACPI_CN,            /* 0x1C    28 FS  */
1056    _ACPI_CN,            /* 0x1D    29 GS  */
1057    _ACPI_CN,            /* 0x1E    30 RS  */
1058    _ACPI_CN,            /* 0x1F    31 US  */
1059    _ACPI_XS|_ACPI_SP,   /* 0x20    32 ' ' */
1060    _ACPI_PU,            /* 0x21    33 '!' */
1061    _ACPI_PU,            /* 0x22    34 '"' */
1062    _ACPI_PU,            /* 0x23    35 '#' */
1063    _ACPI_PU,            /* 0x24    36 '$' */
1064    _ACPI_PU,            /* 0x25    37 '%' */
1065    _ACPI_PU,            /* 0x26    38 '&' */
1066    _ACPI_PU,            /* 0x27    39 ''' */
1067    _ACPI_PU,            /* 0x28    40 '(' */
1068    _ACPI_PU,            /* 0x29    41 ')' */
1069    _ACPI_PU,            /* 0x2A    42 '*' */
1070    _ACPI_PU,            /* 0x2B    43 '+' */
1071    _ACPI_PU,            /* 0x2C    44 ',' */
1072    _ACPI_PU,            /* 0x2D    45 '-' */
1073    _ACPI_PU,            /* 0x2E    46 '.' */
1074    _ACPI_PU,            /* 0x2F    47 '/' */
1075    _ACPI_XD|_ACPI_DI,   /* 0x30    48 '0' */
1076    _ACPI_XD|_ACPI_DI,   /* 0x31    49 '1' */
1077    _ACPI_XD|_ACPI_DI,   /* 0x32    50 '2' */
1078    _ACPI_XD|_ACPI_DI,   /* 0x33    51 '3' */
1079    _ACPI_XD|_ACPI_DI,   /* 0x34    52 '4' */
1080    _ACPI_XD|_ACPI_DI,   /* 0x35    53 '5' */
1081    _ACPI_XD|_ACPI_DI,   /* 0x36    54 '6' */
1082    _ACPI_XD|_ACPI_DI,   /* 0x37    55 '7' */
1083    _ACPI_XD|_ACPI_DI,   /* 0x38    56 '8' */
1084    _ACPI_XD|_ACPI_DI,   /* 0x39    57 '9' */
1085    _ACPI_PU,            /* 0x3A    58 ':' */
1086    _ACPI_PU,            /* 0x3B    59 ';' */
1087    _ACPI_PU,            /* 0x3C    60 '<' */
1088    _ACPI_PU,            /* 0x3D    61 '=' */
1089    _ACPI_PU,            /* 0x3E    62 '>' */
1090    _ACPI_PU,            /* 0x3F    63 '?' */
1091    _ACPI_PU,            /* 0x40    64 '@' */
1092    _ACPI_XD|_ACPI_UP,   /* 0x41    65 'A' */
1093    _ACPI_XD|_ACPI_UP,   /* 0x42    66 'B' */
1094    _ACPI_XD|_ACPI_UP,   /* 0x43    67 'C' */
1095    _ACPI_XD|_ACPI_UP,   /* 0x44    68 'D' */
1096    _ACPI_XD|_ACPI_UP,   /* 0x45    69 'E' */
1097    _ACPI_XD|_ACPI_UP,   /* 0x46    70 'F' */
1098    _ACPI_UP,            /* 0x47    71 'G' */
1099    _ACPI_UP,            /* 0x48    72 'H' */
1100    _ACPI_UP,            /* 0x49    73 'I' */
1101    _ACPI_UP,            /* 0x4A    74 'J' */
1102    _ACPI_UP,            /* 0x4B    75 'K' */
1103    _ACPI_UP,            /* 0x4C    76 'L' */
1104    _ACPI_UP,            /* 0x4D    77 'M' */
1105    _ACPI_UP,            /* 0x4E    78 'N' */
1106    _ACPI_UP,            /* 0x4F    79 'O' */
1107    _ACPI_UP,            /* 0x50    80 'P' */
1108    _ACPI_UP,            /* 0x51    81 'Q' */
1109    _ACPI_UP,            /* 0x52    82 'R' */
1110    _ACPI_UP,            /* 0x53    83 'S' */
1111    _ACPI_UP,            /* 0x54    84 'T' */
1112    _ACPI_UP,            /* 0x55    85 'U' */
1113    _ACPI_UP,            /* 0x56    86 'V' */
1114    _ACPI_UP,            /* 0x57    87 'W' */
1115    _ACPI_UP,            /* 0x58    88 'X' */
1116    _ACPI_UP,            /* 0x59    89 'Y' */
1117    _ACPI_UP,            /* 0x5A    90 'Z' */
1118    _ACPI_PU,            /* 0x5B    91 '[' */
1119    _ACPI_PU,            /* 0x5C    92 '\' */
1120    _ACPI_PU,            /* 0x5D    93 ']' */
1121    _ACPI_PU,            /* 0x5E    94 '^' */
1122    _ACPI_PU,            /* 0x5F    95 '_' */
1123    _ACPI_PU,            /* 0x60    96 '`' */
1124    _ACPI_XD|_ACPI_LO,   /* 0x61    97 'a' */
1125    _ACPI_XD|_ACPI_LO,   /* 0x62    98 'b' */
1126    _ACPI_XD|_ACPI_LO,   /* 0x63    99 'c' */
1127    _ACPI_XD|_ACPI_LO,   /* 0x64   100 'd' */
1128    _ACPI_XD|_ACPI_LO,   /* 0x65   101 'e' */
1129    _ACPI_XD|_ACPI_LO,   /* 0x66   102 'f' */
1130    _ACPI_LO,            /* 0x67   103 'g' */
1131    _ACPI_LO,            /* 0x68   104 'h' */
1132    _ACPI_LO,            /* 0x69   105 'i' */
1133    _ACPI_LO,            /* 0x6A   106 'j' */
1134    _ACPI_LO,            /* 0x6B   107 'k' */
1135    _ACPI_LO,            /* 0x6C   108 'l' */
1136    _ACPI_LO,            /* 0x6D   109 'm' */
1137    _ACPI_LO,            /* 0x6E   110 'n' */
1138    _ACPI_LO,            /* 0x6F   111 'o' */
1139    _ACPI_LO,            /* 0x70   112 'p' */
1140    _ACPI_LO,            /* 0x71   113 'q' */
1141    _ACPI_LO,            /* 0x72   114 'r' */
1142    _ACPI_LO,            /* 0x73   115 's' */
1143    _ACPI_LO,            /* 0x74   116 't' */
1144    _ACPI_LO,            /* 0x75   117 'u' */
1145    _ACPI_LO,            /* 0x76   118 'v' */
1146    _ACPI_LO,            /* 0x77   119 'w' */
1147    _ACPI_LO,            /* 0x78   120 'x' */
1148    _ACPI_LO,            /* 0x79   121 'y' */
1149    _ACPI_LO,            /* 0x7A   122 'z' */
1150    _ACPI_PU,            /* 0x7B   123 '{' */
1151    _ACPI_PU,            /* 0x7C   124 '|' */
1152    _ACPI_PU,            /* 0x7D   125 '}' */
1153    _ACPI_PU,            /* 0x7E   126 '~' */
1154    _ACPI_CN,            /* 0x7F   127 DEL */
1155
1156    0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,  /* 0x80 to 0x8F    */
1157    0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,  /* 0x90 to 0x9F    */
1158    0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,  /* 0xA0 to 0xAF    */
1159    0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,  /* 0xB0 to 0xBF    */
1160    0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,  /* 0xC0 to 0xCF    */
1161    0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,  /* 0xD0 to 0xDF    */
1162    0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,  /* 0xE0 to 0xEF    */
1163    0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,  /* 0xF0 to 0xFF    */
1164    0                                 /* 0x100 */
1165};
1166
1167
1168#endif /* ACPI_USE_SYSTEM_CLIBRARY */
1169