reactos/drivers/bus/acpi/acpica/utilities/utuuid.c

   1 /******************************************************************************
   2  *
   3  * Module Name: utuuid -- UUID support functions
   4  *
   5  *****************************************************************************/
   6
   7 /*
   8  * Copyright (C) 2000 - 2015, 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 "acpi.h"
  45 #include "accommon.h"
  46
  47 #define _COMPONENT          ACPI_COMPILER
  48         ACPI_MODULE_NAME    ("utuuid")
  49
  50
  51 #if (defined ACPI_ASL_COMPILER || defined ACPI_EXEC_APP || defined ACPI_HELP_APP)
  52 /*
  53  * UUID support functions.
  54  *
  55  * This table is used to convert an input UUID ascii string to a 16 byte
  56  * buffer and the reverse. The table maps a UUID buffer index 0-15 to
  57  * the index within the 36-byte UUID string where the associated 2-byte
  58  * hex value can be found.
  59  *
  60  * 36-byte UUID strings are of the form:
  61  *     aabbccdd-eeff-gghh-iijj-kkllmmnnoopp
  62  * Where aa-pp are one byte hex numbers, made up of two hex digits
  63  *
  64  * Note: This table is basically the inverse of the string-to-offset table
  65  * found in the ACPI spec in the description of the ToUUID macro.
  66  */
  67 const UINT8    AcpiGbl_MapToUuidOffset[UUID_BUFFER_LENGTH] =
  68 {
  69     6,4,2,0,11,9,16,14,19,21,24,26,28,30,32,34
  70 };
  71
  72
  73 /*******************************************************************************
  74  *
  75  * FUNCTION:    AcpiUtConvertStringToUuid
  76  *
  77  * PARAMETERS:  InString            - 36-byte formatted UUID string
  78  *              UuidBuffer          - Where the 16-byte UUID buffer is returned
  79  *
  80  * RETURN:      None. Output data is returned in the UuidBuffer
  81  *
  82  * DESCRIPTION: Convert a 36-byte formatted UUID string to 16-byte UUID buffer
  83  *
  84  ******************************************************************************/
  85
  86 void
  87 AcpiUtConvertStringToUuid (
  88     char                    *InString,
  89     UINT8                   *UuidBuffer)
  90 {
  91     UINT32                  i;
  92
  93
  94     for (i = 0; i < UUID_BUFFER_LENGTH; i++)
  95     {
  96         UuidBuffer[i] = (AcpiUtAsciiCharToHex (
  97             InString[AcpiGbl_MapToUuidOffset[i]]) << 4);
  98
  99         UuidBuffer[i] |= AcpiUtAsciiCharToHex (
 100             InString[AcpiGbl_MapToUuidOffset[i] + 1]);
 101     }
 102 }
 103 #endif