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|
/******************************************************************************
*
* Module Name: cmclib - Local implementation of C library functions
* $Revision: 43 $
*
*****************************************************************************/
/******************************************************************************
*
* 1. Copyright Notice
*
* Some or all of this work - Copyright (c) 1999 - 2002, Intel Corp.
* All rights reserved.
*
* 2. License
*
* 2.1. This is your license from Intel Corp. under its intellectual property
* rights. You may have additional license terms from the party that provided
* you this software, covering your right to use that party's intellectual
* property rights.
*
* 2.2. Intel grants, free of charge, to any person ("Licensee") obtaining a
* copy of the source code appearing in this file ("Covered Code") an
* irrevocable, perpetual, worldwide license under Intel's copyrights in the
* base code distributed originally by Intel ("Original Intel Code") to copy,
* make derivatives, distribute, use and display any portion of the Covered
* Code in any form, with the right to sublicense such rights; and
*
* 2.3. Intel grants Licensee a non-exclusive and non-transferable patent
* license (with the right to sublicense), under only those claims of Intel
* patents that are infringed by the Original Intel Code, to make, use, sell,
* offer to sell, and import the Covered Code and derivative works thereof
* solely to the minimum extent necessary to exercise the above copyright
* license, and in no event shall the patent license extend to any additions
* to or modifications of the Original Intel Code. No other license or right
* is granted directly or by implication, estoppel or otherwise;
*
* The above copyright and patent license is granted only if the following
* conditions are met:
*
* 3. Conditions
*
* 3.1. Redistribution of Source with Rights to Further Distribute Source.
* Redistribution of source code of any substantial portion of the Covered
* Code or modification with rights to further distribute source must include
* the above Copyright Notice, the above License, this list of Conditions,
* and the following Disclaimer and Export Compliance provision. In addition,
* Licensee must cause all Covered Code to which Licensee contributes to
* contain a file documenting the changes Licensee made to create that Covered
* Code and the date of any change. Licensee must include in that file the
* documentation of any changes made by any predecessor Licensee. Licensee
* must include a prominent statement that the modification is derived,
* directly or indirectly, from Original Intel Code.
*
* 3.2. Redistribution of Source with no Rights to Further Distribute Source.
* Redistribution of source code of any substantial portion of the Covered
* Code or modification without rights to further distribute source must
* include the following Disclaimer and Export Compliance provision in the
* documentation and/or other materials provided with distribution. In
* addition, Licensee may not authorize further sublicense of source of any
* portion of the Covered Code, and must include terms to the effect that the
* license from Licensee to its licensee is limited to the intellectual
* property embodied in the software Licensee provides to its licensee, and
* not to intellectual property embodied in modifications its licensee may
* make.
*
* 3.3. Redistribution of Executable. Redistribution in executable form of any
* substantial portion of the Covered Code or modification must reproduce the
* above Copyright Notice, and the following Disclaimer and Export Compliance
* provision in the documentation and/or other materials provided with the
* distribution.
*
* 3.4. Intel retains all right, title, and interest in and to the Original
* Intel Code.
*
* 3.5. Neither the name Intel nor any other trademark owned or controlled by
* Intel shall be used in advertising or otherwise to promote the sale, use or
* other dealings in products derived from or relating to the Covered Code
* without prior written authorization from Intel.
*
* 4. Disclaimer and Export Compliance
*
* 4.1. INTEL MAKES NO WARRANTY OF ANY KIND REGARDING ANY SOFTWARE PROVIDED
* HERE. ANY SOFTWARE ORIGINATING FROM INTEL OR DERIVED FROM INTEL SOFTWARE
* IS PROVIDED "AS IS," AND INTEL WILL NOT PROVIDE ANY SUPPORT, ASSISTANCE,
* INSTALLATION, TRAINING OR OTHER SERVICES. INTEL WILL NOT PROVIDE ANY
* UPDATES, ENHANCEMENTS OR EXTENSIONS. INTEL SPECIFICALLY DISCLAIMS ANY
* IMPLIED WARRANTIES OF MERCHANTABILITY, NONINFRINGEMENT AND FITNESS FOR A
* PARTICULAR PURPOSE.
*
* 4.2. IN NO EVENT SHALL INTEL HAVE ANY LIABILITY TO LICENSEE, ITS LICENSEES
* OR ANY OTHER THIRD PARTY, FOR ANY LOST PROFITS, LOST DATA, LOSS OF USE OR
* COSTS OF PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES, OR FOR ANY INDIRECT,
* SPECIAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THIS AGREEMENT, UNDER ANY
* CAUSE OF ACTION OR THEORY OF LIABILITY, AND IRRESPECTIVE OF WHETHER INTEL
* HAS ADVANCE NOTICE OF THE POSSIBILITY OF SUCH DAMAGES. THESE LIMITATIONS
* SHALL APPLY NOTWITHSTANDING THE FAILURE OF THE ESSENTIAL PURPOSE OF ANY
* LIMITED REMEDY.
*
* 4.3. Licensee shall not export, either directly or indirectly, any of this
* software or system incorporating such software without first obtaining any
* required license or other approval from the U. S. Department of Commerce or
* any other agency or department of the United States Government. In the
* event Licensee exports any such software from the United States or
* re-exports any such software from a foreign destination, Licensee shall
* ensure that the distribution and export/re-export of the software is in
* compliance with all laws, regulations, orders, or other restrictions of the
* U.S. Export Administration Regulations. Licensee agrees that neither it nor
* any of its subsidiaries will export/re-export any technical data, process,
* software, or service, directly or indirectly, to any country for which the
* United States government or any agency thereof requires an export license,
* other governmental approval, or letter of assurance, without first obtaining
* such license, approval or letter.
*
*****************************************************************************/
#define __CMCLIB_C__
#include "acpi.h"
#include "acevents.h"
#include "achware.h"
#include "acnamesp.h"
#include "acinterp.h"
#include "amlcode.h"
/*
* These implementations of standard C Library routines can optionally be
* used if a C library is not available. In general, they are less efficient
* than an inline or assembly implementation
*/
#define _COMPONENT MISCELLANEOUS
ACPI_MODULE_NAME ("cmclib")
#ifndef ACPI_USE_SYSTEM_CLIBRARY
/*******************************************************************************
*
* FUNCTION: strlen
*
* PARAMETERS: String - Null terminated string
*
* RETURN: Length
*
* DESCRIPTION: Returns the length of the input string
*
******************************************************************************/
UINT32
AcpiUtStrlen (
const NATIVE_CHAR *String)
{
UINT32 Length = 0;
/* Count the string until a null is encountered */
while (*String)
{
Length++;
String++;
}
return (Length);
}
/*******************************************************************************
*
* FUNCTION: strcpy
*
* PARAMETERS: DstString - Target of the copy
* SrcString - The source string to copy
*
* RETURN: DstString
*
* DESCRIPTION: Copy a null terminated string
*
******************************************************************************/
NATIVE_CHAR *
AcpiUtStrcpy (
NATIVE_CHAR *DstString,
const NATIVE_CHAR *SrcString)
{
NATIVE_CHAR *String = DstString;
/* Move bytes brute force */
while (*SrcString)
{
*String = *SrcString;
String++;
SrcString++;
}
/* Null terminate */
*String = 0;
return (DstString);
}
/*******************************************************************************
*
* FUNCTION: strncpy
*
* PARAMETERS: DstString - Target of the copy
* SrcString - The source string to copy
* Count - Maximum # of bytes to copy
*
* RETURN: DstString
*
* DESCRIPTION: Copy a null terminated string, with a maximum length
*
******************************************************************************/
NATIVE_CHAR *
AcpiUtStrncpy (
NATIVE_CHAR *DstString,
const NATIVE_CHAR *SrcString,
NATIVE_UINT Count)
{
NATIVE_CHAR *String = DstString;
/* Copy the string */
for (String = DstString;
Count && (Count--, (*String++ = *SrcString++)); )
{;}
/* Pad with nulls if necessary */
while (Count--)
{
*String = 0;
String++;
}
/* Return original pointer */
return (DstString);
}
/*******************************************************************************
*
* FUNCTION: strcmp
*
* PARAMETERS: String1 - First string
* String2 - Second string
*
* RETURN: Index where strings mismatched, or 0 if strings matched
*
* DESCRIPTION: Compare two null terminated strings
*
******************************************************************************/
UINT32
AcpiUtStrcmp (
const NATIVE_CHAR *String1,
const NATIVE_CHAR *String2)
{
for ( ; (*String1 == *String2); String2++)
{
if (!*String1++)
{
return (0);
}
}
return ((unsigned char) *String1 - (unsigned char) *String2);
}
/*******************************************************************************
*
* FUNCTION: strncmp
*
* PARAMETERS: String1 - First string
* String2 - Second string
* Count - Maximum # of bytes to compare
*
* RETURN: Index where strings mismatched, or 0 if strings matched
*
* DESCRIPTION: Compare two null terminated strings, with a maximum length
*
******************************************************************************/
UINT32
AcpiUtStrncmp (
const NATIVE_CHAR *String1,
const NATIVE_CHAR *String2,
NATIVE_UINT Count)
{
for ( ; Count-- && (*String1 == *String2); String2++)
{
if (!*String1++)
{
return (0);
}
}
return ((Count == ACPI_INTEGER_MAX) ? 0 : ((unsigned char) *String1 -
(unsigned char) *String2));
}
/*******************************************************************************
*
* FUNCTION: Strcat
*
* PARAMETERS: DstString - Target of the copy
* SrcString - The source string to copy
*
* RETURN: DstString
*
* DESCRIPTION: Append a null terminated string to a null terminated string
*
******************************************************************************/
NATIVE_CHAR *
AcpiUtStrcat (
NATIVE_CHAR *DstString,
const NATIVE_CHAR *SrcString)
{
NATIVE_CHAR *String;
/* Find end of the destination string */
for (String = DstString; *String++; )
{ ; }
/* Concatenate the string */
for (--String; (*String++ = *SrcString++); )
{ ; }
return (DstString);
}
/*******************************************************************************
*
* FUNCTION: strncat
*
* PARAMETERS: DstString - Target of the copy
* SrcString - The source string to copy
* Count - Maximum # of bytes to copy
*
* RETURN: DstString
*
* DESCRIPTION: Append a null terminated string to a null terminated string,
* with a maximum count.
*
******************************************************************************/
NATIVE_CHAR *
AcpiUtStrncat (
NATIVE_CHAR *DstString,
const NATIVE_CHAR *SrcString,
NATIVE_UINT Count)
{
NATIVE_CHAR *String;
if (Count)
{
/* Find end of the destination string */
for (String = DstString; *String++; )
{ ; }
/* Concatenate the string */
for (--String; (*String++ = *SrcString++) && --Count; )
{ ; }
/* Null terminate if necessary */
if (!Count)
{
*String = 0;
}
}
return (DstString);
}
/*******************************************************************************
*
* FUNCTION: memcpy
*
* PARAMETERS: Dest - Target of the copy
* Src - Source buffer to copy
* Count - Number of bytes to copy
*
* RETURN: Dest
*
* DESCRIPTION: Copy arbitrary bytes of memory
*
******************************************************************************/
void *
AcpiUtMemcpy (
void *Dest,
const void *Src,
NATIVE_UINT Count)
{
NATIVE_CHAR *New = (NATIVE_CHAR *) Dest;
NATIVE_CHAR *Old = (NATIVE_CHAR *) Src;
while (Count)
{
*New = *Old;
New++;
Old++;
Count--;
}
return (Dest);
}
/*******************************************************************************
*
* FUNCTION: memset
*
* PARAMETERS: Dest - Buffer to set
* Value - Value to set each byte of memory
* Count - Number of bytes to set
*
* RETURN: Dest
*
* DESCRIPTION: Initialize a buffer to a known value.
*
******************************************************************************/
void *
AcpiUtMemset (
void *Dest,
NATIVE_UINT Value,
NATIVE_UINT Count)
{
NATIVE_CHAR *New = (NATIVE_CHAR *) Dest;
while (Count)
{
*New = (char) Value;
New++;
Count--;
}
return (Dest);
}
#define NEGATIVE 1
#define POSITIVE 0
#define _ACPI_XA 0x00 /* extra alphabetic - not supported */
#define _ACPI_XS 0x40 /* extra space */
#define _ACPI_BB 0x00 /* BEL, BS, etc. - not supported */
#define _ACPI_CN 0x20 /* CR, FF, HT, NL, VT */
#define _ACPI_DI 0x04 /* '0'-'9' */
#define _ACPI_LO 0x02 /* 'a'-'z' */
#define _ACPI_PU 0x10 /* punctuation */
#define _ACPI_SP 0x08 /* space */
#define _ACPI_UP 0x01 /* 'A'-'Z' */
#define _ACPI_XD 0x80 /* '0'-'9', 'A'-'F', 'a'-'f' */
static const UINT8 _acpi_ctype[257] = {
_ACPI_CN, /* 0x0 0. */
_ACPI_CN, /* 0x1 1. */
_ACPI_CN, /* 0x2 2. */
_ACPI_CN, /* 0x3 3. */
_ACPI_CN, /* 0x4 4. */
_ACPI_CN, /* 0x5 5. */
_ACPI_CN, /* 0x6 6. */
_ACPI_CN, /* 0x7 7. */
_ACPI_CN, /* 0x8 8. */
_ACPI_CN|_ACPI_SP, /* 0x9 9. */
_ACPI_CN|_ACPI_SP, /* 0xA 10. */
_ACPI_CN|_ACPI_SP, /* 0xB 11. */
_ACPI_CN|_ACPI_SP, /* 0xC 12. */
_ACPI_CN|_ACPI_SP, /* 0xD 13. */
_ACPI_CN, /* 0xE 14. */
_ACPI_CN, /* 0xF 15. */
_ACPI_CN, /* 0x10 16. */
_ACPI_CN, /* 0x11 17. */
_ACPI_CN, /* 0x12 18. */
_ACPI_CN, /* 0x13 19. */
_ACPI_CN, /* 0x14 20. */
_ACPI_CN, /* 0x15 21. */
_ACPI_CN, /* 0x16 22. */
_ACPI_CN, /* 0x17 23. */
_ACPI_CN, /* 0x18 24. */
_ACPI_CN, /* 0x19 25. */
_ACPI_CN, /* 0x1A 26. */
_ACPI_CN, /* 0x1B 27. */
_ACPI_CN, /* 0x1C 28. */
_ACPI_CN, /* 0x1D 29. */
_ACPI_CN, /* 0x1E 30. */
_ACPI_CN, /* 0x1F 31. */
_ACPI_XS|_ACPI_SP, /* 0x20 32. ' ' */
_ACPI_PU, /* 0x21 33. '!' */
_ACPI_PU, /* 0x22 34. '"' */
_ACPI_PU, /* 0x23 35. '#' */
_ACPI_PU, /* 0x24 36. '$' */
_ACPI_PU, /* 0x25 37. '%' */
_ACPI_PU, /* 0x26 38. '&' */
_ACPI_PU, /* 0x27 39. ''' */
_ACPI_PU, /* 0x28 40. '(' */
_ACPI_PU, /* 0x29 41. ')' */
_ACPI_PU, /* 0x2A 42. '*' */
_ACPI_PU, /* 0x2B 43. '+' */
_ACPI_PU, /* 0x2C 44. ',' */
_ACPI_PU, /* 0x2D 45. '-' */
_ACPI_PU, /* 0x2E 46. '.' */
_ACPI_PU, /* 0x2F 47. '/' */
_ACPI_XD|_ACPI_DI, /* 0x30 48. '0' */
_ACPI_XD|_ACPI_DI, /* 0x31 49. '1' */
_ACPI_XD|_ACPI_DI, /* 0x32 50. '2' */
_ACPI_XD|_ACPI_DI, /* 0x33 51. '3' */
_ACPI_XD|_ACPI_DI, /* 0x34 52. '4' */
_ACPI_XD|_ACPI_DI, /* 0x35 53. '5' */
_ACPI_XD|_ACPI_DI, /* 0x36 54. '6' */
_ACPI_XD|_ACPI_DI, /* 0x37 55. '7' */
_ACPI_XD|_ACPI_DI, /* 0x38 56. '8' */
_ACPI_XD|_ACPI_DI, /* 0x39 57. '9' */
_ACPI_PU, /* 0x3A 58. ':' */
_ACPI_PU, /* 0x3B 59. ';' */
_ACPI_PU, /* 0x3C 60. '<' */
_ACPI_PU, /* 0x3D 61. '=' */
_ACPI_PU, /* 0x3E 62. '>' */
_ACPI_PU, /* 0x3F 63. '?' */
_ACPI_PU, /* 0x40 64. '@' */
_ACPI_XD|_ACPI_UP, /* 0x41 65. 'A' */
_ACPI_XD|_ACPI_UP, /* 0x42 66. 'B' */
_ACPI_XD|_ACPI_UP, /* 0x43 67. 'C' */
_ACPI_XD|_ACPI_UP, /* 0x44 68. 'D' */
_ACPI_XD|_ACPI_UP, /* 0x45 69. 'E' */
_ACPI_XD|_ACPI_UP, /* 0x46 70. 'F' */
_ACPI_UP, /* 0x47 71. 'G' */
_ACPI_UP, /* 0x48 72. 'H' */
_ACPI_UP, /* 0x49 73. 'I' */
_ACPI_UP, /* 0x4A 74. 'J' */
_ACPI_UP, /* 0x4B 75. 'K' */
_ACPI_UP, /* 0x4C 76. 'L' */
_ACPI_UP, /* 0x4D 77. 'M' */
_ACPI_UP, /* 0x4E 78. 'N' */
_ACPI_UP, /* 0x4F 79. 'O' */
_ACPI_UP, /* 0x50 80. 'P' */
_ACPI_UP, /* 0x51 81. 'Q' */
_ACPI_UP, /* 0x52 82. 'R' */
_ACPI_UP, /* 0x53 83. 'S' */
_ACPI_UP, /* 0x54 84. 'T' */
_ACPI_UP, /* 0x55 85. 'U' */
_ACPI_UP, /* 0x56 86. 'V' */
_ACPI_UP, /* 0x57 87. 'W' */
_ACPI_UP, /* 0x58 88. 'X' */
_ACPI_UP, /* 0x59 89. 'Y' */
_ACPI_UP, /* 0x5A 90. 'Z' */
_ACPI_PU, /* 0x5B 91. '[' */
_ACPI_PU, /* 0x5C 92. '\' */
_ACPI_PU, /* 0x5D 93. ']' */
_ACPI_PU, /* 0x5E 94. '^' */
_ACPI_PU, /* 0x5F 95. '_' */
_ACPI_PU, /* 0x60 96. '`' */
_ACPI_XD|_ACPI_LO, /* 0x61 97. 'a' */
_ACPI_XD|_ACPI_LO, /* 0x62 98. 'b' */
_ACPI_XD|_ACPI_LO, /* 0x63 99. 'c' */
_ACPI_XD|_ACPI_LO, /* 0x64 100. 'd' */
_ACPI_XD|_ACPI_LO, /* 0x65 101. 'e' */
_ACPI_XD|_ACPI_LO, /* 0x66 102. 'f' */
_ACPI_LO, /* 0x67 103. 'g' */
_ACPI_LO, /* 0x68 104. 'h' */
_ACPI_LO, /* 0x69 105. 'i' */
_ACPI_LO, /* 0x6A 106. 'j' */
_ACPI_LO, /* 0x6B 107. 'k' */
_ACPI_LO, /* 0x6C 108. 'l' */
_ACPI_LO, /* 0x6D 109. 'm' */
_ACPI_LO, /* 0x6E 110. 'n' */
_ACPI_LO, /* 0x6F 111. 'o' */
_ACPI_LO, /* 0x70 112. 'p' */
_ACPI_LO, /* 0x71 113. 'q' */
_ACPI_LO, /* 0x72 114. 'r' */
_ACPI_LO, /* 0x73 115. 's' */
_ACPI_LO, /* 0x74 116. 't' */
_ACPI_LO, /* 0x75 117. 'u' */
_ACPI_LO, /* 0x76 118. 'v' */
_ACPI_LO, /* 0x77 119. 'w' */
_ACPI_LO, /* 0x78 120. 'x' */
_ACPI_LO, /* 0x79 121. 'y' */
_ACPI_LO, /* 0x7A 122. 'z' */
_ACPI_PU, /* 0x7B 123. '{' */
_ACPI_PU, /* 0x7C 124. '|' */
_ACPI_PU, /* 0x7D 125. '}' */
_ACPI_PU, /* 0x7E 126. '~' */
_ACPI_CN, /* 0x7F 127. */
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* 0x80 to 0x8F */
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* 0x90 to 0x9F */
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* 0xA0 to 0xAF */
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* 0xB0 to 0xBF */
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* 0xC0 to 0xCF */
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* 0xD0 to 0xDF */
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* 0xE0 to 0xEF */
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0 /* 0xF0 to 0x100 */
};
#define IS_UPPER(c) (_acpi_ctype[(unsigned char)(c)] & (_ACPI_UP))
#define IS_LOWER(c) (_acpi_ctype[(unsigned char)(c)] & (_ACPI_LO))
#define IS_DIGIT(c) (_acpi_ctype[(unsigned char)(c)] & (_ACPI_DI))
#define IS_SPACE(c) (_acpi_ctype[(unsigned char)(c)] & (_ACPI_SP))
#define IS_XDIGIT(c) (_acpi_ctype[(unsigned char)(c)] & (_ACPI_XD))
/*******************************************************************************
*
* FUNCTION: AcpiUtToUpper
*
* PARAMETERS:
*
* RETURN:
*
* DESCRIPTION: Convert character to uppercase
*
******************************************************************************/
UINT32
AcpiUtToUpper (
UINT32 c)
{
return (IS_LOWER(c) ? ((c)-0x20) : (c));
}
/*******************************************************************************
*
* FUNCTION: AcpiUtToLower
*
* PARAMETERS:
*
* RETURN:
*
* DESCRIPTION: Convert character to lowercase
*
******************************************************************************/
UINT32
AcpiUtToLower (
UINT32 c)
{
return (IS_UPPER(c) ? ((c)+0x20) : (c));
}
/*******************************************************************************
*
* FUNCTION: strstr
*
* PARAMETERS: String1 -
* String2
*
* RETURN:
*
* DESCRIPTION: Checks if String2 occurs in String1. This is not really a
* full implementation of strstr, only sufficient for command
* matching
*
******************************************************************************/
NATIVE_CHAR *
AcpiUtStrstr (
NATIVE_CHAR *String1,
NATIVE_CHAR *String2)
{
NATIVE_CHAR *String;
if (AcpiUtStrlen (String2) > AcpiUtStrlen (String1))
{
return (NULL);
}
/* Walk entire string, comparing the letters */
for (String = String1; *String2; )
{
if (*String2 != *String)
{
return (NULL);
}
String2++;
String++;
}
return (String1);
}
/*******************************************************************************
*
* FUNCTION: strtoul
*
* PARAMETERS: String - Null terminated string
* Terminater - Where a pointer to the terminating byte is returned
* Base - Radix of the string
*
* RETURN: Converted value
*
* DESCRIPTION: Convert a string into an unsigned value.
*
******************************************************************************/
UINT32
AcpiUtStrtoul (
const NATIVE_CHAR *String,
NATIVE_CHAR **Terminator,
UINT32 Base)
{
UINT32 converted = 0;
UINT32 index;
UINT32 sign;
const NATIVE_CHAR *StringStart;
UINT32 ReturnValue = 0;
ACPI_STATUS Status = AE_OK;
/*
* Save the value of the pointer to the buffer's first
* character, save the current errno value, and then
* skip over any white space in the buffer:
*/
StringStart = String;
while (IS_SPACE (*String) || *String == '\t')
{
++String;
}
/*
* The buffer may contain an optional plus or minus sign.
* If it does, then skip over it but remember what is was:
*/
if (*String == '-')
{
sign = NEGATIVE;
++String;
}
else if (*String == '+')
{
++String;
sign = POSITIVE;
}
else
{
sign = POSITIVE;
}
/*
* If the input parameter Base is zero, then we need to
* determine if it is octal, decimal, or hexadecimal:
*/
if (Base == 0)
{
if (*String == '0')
{
if (AcpiUtToLower (*(++String)) == 'x')
{
Base = 16;
++String;
}
else
{
Base = 8;
}
}
else
{
Base = 10;
}
}
else if (Base < 2 || Base > 36)
{
/*
* The specified Base parameter is not in the domain of
* this function:
*/
goto done;
}
/*
* For octal and hexadecimal bases, skip over the leading
* 0 or 0x, if they are present.
*/
if (Base == 8 && *String == '0')
{
String++;
}
if (Base == 16 &&
*String == '0' &&
AcpiUtToLower (*(++String)) == 'x')
{
String++;
}
/*
* Main loop: convert the string to an unsigned long:
*/
while (*String)
{
if (IS_DIGIT (*String))
{
index = *String - '0';
}
else
{
index = AcpiUtToUpper (*String);
if (IS_UPPER (index))
{
index = index - 'A' + 10;
}
else
{
goto done;
}
}
if (index >= Base)
{
goto done;
}
/*
* Check to see if value is out of range:
*/
if (ReturnValue > ((ACPI_UINT32_MAX - (UINT32) index) /
(UINT32) Base))
{
Status = AE_ERROR;
ReturnValue = 0L; /* reset */
}
else
{
ReturnValue *= Base;
ReturnValue += index;
converted = 1;
}
++String;
}
done:
/*
* If appropriate, update the caller's pointer to the next
* unconverted character in the buffer.
*/
if (Terminator)
{
if (converted == 0 && ReturnValue == 0L && String != NULL)
{
*Terminator = (NATIVE_CHAR *) StringStart;
}
else
{
*Terminator = (NATIVE_CHAR *) String;
}
}
if (Status == AE_ERROR)
{
ReturnValue = ACPI_UINT32_MAX;
}
/*
* If a minus sign was present, then "the conversion is negated":
*/
if (sign == NEGATIVE)
{
ReturnValue = (ACPI_UINT32_MAX - ReturnValue) + 1;
}
return (ReturnValue);
}
#endif /* ACPI_USE_SYSTEM_CLIBRARY */
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