1 /******************************************************************************
3 * Module Name: cmclib - Local implementation of C library functions
6 *****************************************************************************/
8 /******************************************************************************
12 * Some or all of this work - Copyright (c) 1999 - 2004, Intel Corp.
13 * All rights reserved.
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
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
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;
38 * The above copyright and patent license is granted only if the following
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.
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
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
73 * 3.4. Intel retains all right, title, and interest in and to the Original
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.
81 * 4. Disclaimer and Export Compliance
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
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
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.
115 *****************************************************************************/
123 * These implementations of standard C Library routines can optionally be
124 * used if a C library is not available. In general, they are less efficient
125 * than an inline or assembly implementation
128 #define _COMPONENT ACPI_UTILITIES
129 ACPI_MODULE_NAME ("cmclib")
132 #ifndef ACPI_USE_SYSTEM_CLIBRARY
134 /*******************************************************************************
138 * PARAMETERS: String - Null terminated string
142 * DESCRIPTION: Returns the length of the input string
144 ******************************************************************************/
154 /* Count the string until a null is encountered */
166 /*******************************************************************************
170 * PARAMETERS: DstString - Target of the copy
171 * SrcString - The source string to copy
175 * DESCRIPTION: Copy a null terminated string
177 ******************************************************************************/
182 const char *SrcString)
184 char *String = DstString;
187 /* Move bytes brute force */
191 *String = *SrcString;
204 /*******************************************************************************
208 * PARAMETERS: DstString - Target of the copy
209 * SrcString - The source string to copy
210 * Count - Maximum # of bytes to copy
214 * DESCRIPTION: Copy a null terminated string, with a maximum length
216 ******************************************************************************/
221 const char *SrcString,
224 char *String = DstString;
227 /* Copy the string */
229 for (String = DstString;
230 Count && (Count--, (*String++ = *SrcString++)); )
233 /* Pad with nulls if necessary */
241 /* Return original pointer */
247 /*******************************************************************************
251 * PARAMETERS: String1 - First string
252 * String2 - Second string
254 * RETURN: Index where strings mismatched, or 0 if strings matched
256 * DESCRIPTION: Compare two null terminated strings
258 ******************************************************************************/
267 for ( ; (*String1 == *String2); String2++)
275 return ((unsigned char) *String1 - (unsigned char) *String2);
279 /*******************************************************************************
283 * PARAMETERS: Buffer1 - First Buffer
284 * Buffer2 - Second Buffer
285 * Count - Maximum # of bytes to compare
287 * RETURN: Index where Buffers mismatched, or 0 if Buffers matched
289 * DESCRIPTION: Compare two Buffers, with a maximum length
291 ******************************************************************************/
300 for ( ; Count-- && (*Buffer1 == *Buffer2); Buffer1++, Buffer2++)
304 return ((Count == ACPI_SIZE_MAX) ? 0 : ((unsigned char) *Buffer1 -
305 (unsigned char) *Buffer2));
309 /*******************************************************************************
313 * PARAMETERS: String1 - First string
314 * String2 - Second string
315 * Count - Maximum # of bytes to compare
317 * RETURN: Index where strings mismatched, or 0 if strings matched
319 * DESCRIPTION: Compare two null terminated strings, with a maximum length
321 ******************************************************************************/
331 for ( ; Count-- && (*String1 == *String2); String2++)
339 return ((Count == ACPI_SIZE_MAX) ? 0 : ((unsigned char) *String1 -
340 (unsigned char) *String2));
344 /*******************************************************************************
348 * PARAMETERS: DstString - Target of the copy
349 * SrcString - The source string to copy
353 * DESCRIPTION: Append a null terminated string to a null terminated string
355 ******************************************************************************/
360 const char *SrcString)
365 /* Find end of the destination string */
367 for (String = DstString; *String++; )
370 /* Concatenate the string */
372 for (--String; (*String++ = *SrcString++); )
379 /*******************************************************************************
383 * PARAMETERS: DstString - Target of the copy
384 * SrcString - The source string to copy
385 * Count - Maximum # of bytes to copy
389 * DESCRIPTION: Append a null terminated string to a null terminated string,
390 * with a maximum count.
392 ******************************************************************************/
397 const char *SrcString,
405 /* Find end of the destination string */
407 for (String = DstString; *String++; )
410 /* Concatenate the string */
412 for (--String; (*String++ = *SrcString++) && --Count; )
415 /* Null terminate if necessary */
427 /*******************************************************************************
431 * PARAMETERS: Dest - Target of the copy
432 * Src - Source buffer to copy
433 * Count - Number of bytes to copy
437 * DESCRIPTION: Copy arbitrary bytes of memory
439 ******************************************************************************/
447 char *New = (char *) Dest;
448 char *Old = (char *) Src;
463 /*******************************************************************************
467 * PARAMETERS: Dest - Buffer to set
468 * Value - Value to set each byte of memory
469 * Count - Number of bytes to set
473 * DESCRIPTION: Initialize a buffer to a known value.
475 ******************************************************************************/
480 ACPI_NATIVE_UINT Value,
483 char *New = (char *) Dest;
500 const UINT8 _acpi_ctype[257] = {
501 _ACPI_CN, /* 0x0 0. */
502 _ACPI_CN, /* 0x1 1. */
503 _ACPI_CN, /* 0x2 2. */
504 _ACPI_CN, /* 0x3 3. */
505 _ACPI_CN, /* 0x4 4. */
506 _ACPI_CN, /* 0x5 5. */
507 _ACPI_CN, /* 0x6 6. */
508 _ACPI_CN, /* 0x7 7. */
509 _ACPI_CN, /* 0x8 8. */
510 _ACPI_CN|_ACPI_SP, /* 0x9 9. */
511 _ACPI_CN|_ACPI_SP, /* 0xA 10. */
512 _ACPI_CN|_ACPI_SP, /* 0xB 11. */
513 _ACPI_CN|_ACPI_SP, /* 0xC 12. */
514 _ACPI_CN|_ACPI_SP, /* 0xD 13. */
515 _ACPI_CN, /* 0xE 14. */
516 _ACPI_CN, /* 0xF 15. */
517 _ACPI_CN, /* 0x10 16. */
518 _ACPI_CN, /* 0x11 17. */
519 _ACPI_CN, /* 0x12 18. */
520 _ACPI_CN, /* 0x13 19. */
521 _ACPI_CN, /* 0x14 20. */
522 _ACPI_CN, /* 0x15 21. */
523 _ACPI_CN, /* 0x16 22. */
524 _ACPI_CN, /* 0x17 23. */
525 _ACPI_CN, /* 0x18 24. */
526 _ACPI_CN, /* 0x19 25. */
527 _ACPI_CN, /* 0x1A 26. */
528 _ACPI_CN, /* 0x1B 27. */
529 _ACPI_CN, /* 0x1C 28. */
530 _ACPI_CN, /* 0x1D 29. */
531 _ACPI_CN, /* 0x1E 30. */
532 _ACPI_CN, /* 0x1F 31. */
533 _ACPI_XS|_ACPI_SP, /* 0x20 32. ' ' */
534 _ACPI_PU, /* 0x21 33. '!' */
535 _ACPI_PU, /* 0x22 34. '"' */
536 _ACPI_PU, /* 0x23 35. '#' */
537 _ACPI_PU, /* 0x24 36. '$' */
538 _ACPI_PU, /* 0x25 37. '%' */
539 _ACPI_PU, /* 0x26 38. '&' */
540 _ACPI_PU, /* 0x27 39. ''' */
541 _ACPI_PU, /* 0x28 40. '(' */
542 _ACPI_PU, /* 0x29 41. ')' */
543 _ACPI_PU, /* 0x2A 42. '*' */
544 _ACPI_PU, /* 0x2B 43. '+' */
545 _ACPI_PU, /* 0x2C 44. ',' */
546 _ACPI_PU, /* 0x2D 45. '-' */
547 _ACPI_PU, /* 0x2E 46. '.' */
548 _ACPI_PU, /* 0x2F 47. '/' */
549 _ACPI_XD|_ACPI_DI, /* 0x30 48. '0' */
550 _ACPI_XD|_ACPI_DI, /* 0x31 49. '1' */
551 _ACPI_XD|_ACPI_DI, /* 0x32 50. '2' */
552 _ACPI_XD|_ACPI_DI, /* 0x33 51. '3' */
553 _ACPI_XD|_ACPI_DI, /* 0x34 52. '4' */
554 _ACPI_XD|_ACPI_DI, /* 0x35 53. '5' */
555 _ACPI_XD|_ACPI_DI, /* 0x36 54. '6' */
556 _ACPI_XD|_ACPI_DI, /* 0x37 55. '7' */
557 _ACPI_XD|_ACPI_DI, /* 0x38 56. '8' */
558 _ACPI_XD|_ACPI_DI, /* 0x39 57. '9' */
559 _ACPI_PU, /* 0x3A 58. ':' */
560 _ACPI_PU, /* 0x3B 59. ';' */
561 _ACPI_PU, /* 0x3C 60. '<' */
562 _ACPI_PU, /* 0x3D 61. '=' */
563 _ACPI_PU, /* 0x3E 62. '>' */
564 _ACPI_PU, /* 0x3F 63. '?' */
565 _ACPI_PU, /* 0x40 64. '@' */
566 _ACPI_XD|_ACPI_UP, /* 0x41 65. 'A' */
567 _ACPI_XD|_ACPI_UP, /* 0x42 66. 'B' */
568 _ACPI_XD|_ACPI_UP, /* 0x43 67. 'C' */
569 _ACPI_XD|_ACPI_UP, /* 0x44 68. 'D' */
570 _ACPI_XD|_ACPI_UP, /* 0x45 69. 'E' */
571 _ACPI_XD|_ACPI_UP, /* 0x46 70. 'F' */
572 _ACPI_UP, /* 0x47 71. 'G' */
573 _ACPI_UP, /* 0x48 72. 'H' */
574 _ACPI_UP, /* 0x49 73. 'I' */
575 _ACPI_UP, /* 0x4A 74. 'J' */
576 _ACPI_UP, /* 0x4B 75. 'K' */
577 _ACPI_UP, /* 0x4C 76. 'L' */
578 _ACPI_UP, /* 0x4D 77. 'M' */
579 _ACPI_UP, /* 0x4E 78. 'N' */
580 _ACPI_UP, /* 0x4F 79. 'O' */
581 _ACPI_UP, /* 0x50 80. 'P' */
582 _ACPI_UP, /* 0x51 81. 'Q' */
583 _ACPI_UP, /* 0x52 82. 'R' */
584 _ACPI_UP, /* 0x53 83. 'S' */
585 _ACPI_UP, /* 0x54 84. 'T' */
586 _ACPI_UP, /* 0x55 85. 'U' */
587 _ACPI_UP, /* 0x56 86. 'V' */
588 _ACPI_UP, /* 0x57 87. 'W' */
589 _ACPI_UP, /* 0x58 88. 'X' */
590 _ACPI_UP, /* 0x59 89. 'Y' */
591 _ACPI_UP, /* 0x5A 90. 'Z' */
592 _ACPI_PU, /* 0x5B 91. '[' */
593 _ACPI_PU, /* 0x5C 92. '\' */
594 _ACPI_PU, /* 0x5D 93. ']' */
595 _ACPI_PU, /* 0x5E 94. '^' */
596 _ACPI_PU, /* 0x5F 95. '_' */
597 _ACPI_PU, /* 0x60 96. '`' */
598 _ACPI_XD|_ACPI_LO, /* 0x61 97. 'a' */
599 _ACPI_XD|_ACPI_LO, /* 0x62 98. 'b' */
600 _ACPI_XD|_ACPI_LO, /* 0x63 99. 'c' */
601 _ACPI_XD|_ACPI_LO, /* 0x64 100. 'd' */
602 _ACPI_XD|_ACPI_LO, /* 0x65 101. 'e' */
603 _ACPI_XD|_ACPI_LO, /* 0x66 102. 'f' */
604 _ACPI_LO, /* 0x67 103. 'g' */
605 _ACPI_LO, /* 0x68 104. 'h' */
606 _ACPI_LO, /* 0x69 105. 'i' */
607 _ACPI_LO, /* 0x6A 106. 'j' */
608 _ACPI_LO, /* 0x6B 107. 'k' */
609 _ACPI_LO, /* 0x6C 108. 'l' */
610 _ACPI_LO, /* 0x6D 109. 'm' */
611 _ACPI_LO, /* 0x6E 110. 'n' */
612 _ACPI_LO, /* 0x6F 111. 'o' */
613 _ACPI_LO, /* 0x70 112. 'p' */
614 _ACPI_LO, /* 0x71 113. 'q' */
615 _ACPI_LO, /* 0x72 114. 'r' */
616 _ACPI_LO, /* 0x73 115. 's' */
617 _ACPI_LO, /* 0x74 116. 't' */
618 _ACPI_LO, /* 0x75 117. 'u' */
619 _ACPI_LO, /* 0x76 118. 'v' */
620 _ACPI_LO, /* 0x77 119. 'w' */
621 _ACPI_LO, /* 0x78 120. 'x' */
622 _ACPI_LO, /* 0x79 121. 'y' */
623 _ACPI_LO, /* 0x7A 122. 'z' */
624 _ACPI_PU, /* 0x7B 123. '{' */
625 _ACPI_PU, /* 0x7C 124. '|' */
626 _ACPI_PU, /* 0x7D 125. '}' */
627 _ACPI_PU, /* 0x7E 126. '~' */
628 _ACPI_CN, /* 0x7F 127. */
630 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* 0x80 to 0x8F */
631 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* 0x90 to 0x9F */
632 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* 0xA0 to 0xAF */
633 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* 0xB0 to 0xBF */
634 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* 0xC0 to 0xCF */
635 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* 0xD0 to 0xDF */
636 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* 0xE0 to 0xEF */
637 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0 /* 0xF0 to 0x100 */
640 #define IS_UPPER(c) (_acpi_ctype[(unsigned char)(c)] & (_ACPI_UP))
641 #define IS_LOWER(c) (_acpi_ctype[(unsigned char)(c)] & (_ACPI_LO))
642 #define IS_DIGIT(c) (_acpi_ctype[(unsigned char)(c)] & (_ACPI_DI))
643 #define IS_SPACE(c) (_acpi_ctype[(unsigned char)(c)] & (_ACPI_SP))
644 #define IS_XDIGIT(c) (_acpi_ctype[(unsigned char)(c)] & (_ACPI_XD))
647 /*******************************************************************************
649 * FUNCTION: AcpiUtToUpper
655 * DESCRIPTION: Convert character to uppercase
657 ******************************************************************************/
664 return (IS_LOWER(c) ? ((c)-0x20) : (c));
668 /*******************************************************************************
670 * FUNCTION: AcpiUtToLower
676 * DESCRIPTION: Convert character to lowercase
678 ******************************************************************************/
685 return (IS_UPPER(c) ? ((c)+0x20) : (c));
689 /*******************************************************************************
693 * PARAMETERS: String1 -
698 * DESCRIPTION: Checks if String2 occurs in String1. This is not really a
699 * full implementation of strstr, only sufficient for command
702 ******************************************************************************/
712 if (AcpiUtStrlen (String2) > AcpiUtStrlen (String1))
717 /* Walk entire string, comparing the letters */
719 for (String = String1; *String2; )
721 if (*String2 != *String)
734 /*******************************************************************************
738 * PARAMETERS: String - Null terminated string
739 * Terminater - Where a pointer to the terminating byte is returned
740 * Base - Radix of the string
742 * RETURN: Converted value
744 * DESCRIPTION: Convert a string into an unsigned value.
746 ******************************************************************************/
754 UINT32 converted = 0;
757 const char *StringStart;
758 UINT32 ReturnValue = 0;
759 ACPI_STATUS Status = AE_OK;
763 * Save the value of the pointer to the buffer's first
764 * character, save the current errno value, and then
765 * skip over any white space in the buffer:
767 StringStart = String;
768 while (IS_SPACE (*String) || *String == '\t')
774 * The buffer may contain an optional plus or minus sign.
775 * If it does, then skip over it but remember what is was:
782 else if (*String == '+')
793 * If the input parameter Base is zero, then we need to
794 * determine if it is octal, decimal, or hexadecimal:
800 if (AcpiUtToLower (*(++String)) == 'x')
815 else if (Base < 2 || Base > 36)
818 * The specified Base parameter is not in the domain of
825 * For octal and hexadecimal bases, skip over the leading
826 * 0 or 0x, if they are present.
828 if (Base == 8 && *String == '0')
835 AcpiUtToLower (*(++String)) == 'x')
842 * Main loop: convert the string to an unsigned long:
846 if (IS_DIGIT (*String))
848 index = (UINT32) ((UINT8) *String - '0');
852 index = (UINT32) AcpiUtToUpper (*String);
853 if (IS_UPPER (index))
855 index = index - 'A' + 10;
869 * Check to see if value is out of range:
872 if (ReturnValue > ((ACPI_UINT32_MAX - (UINT32) index) /
876 ReturnValue = 0; /* reset */
881 ReturnValue += index;
890 * If appropriate, update the caller's pointer to the next
891 * unconverted character in the buffer.
895 if (converted == 0 && ReturnValue == 0 && String != NULL)
897 *Terminator = (char *) StringStart;
901 *Terminator = (char *) String;
905 if (Status == AE_ERROR)
907 ReturnValue = ACPI_UINT32_MAX;
911 * If a minus sign was present, then "the conversion is negated":
913 if (sign == NEGATIVE)
915 ReturnValue = (ACPI_UINT32_MAX - ReturnValue) + 1;
918 return (ReturnValue);
921 #endif /* ACPI_USE_SYSTEM_CLIBRARY */