99 lines
3.8 KiB
C
99 lines
3.8 KiB
C
/******************************************************************************
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*
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* Module Name: utuuid -- UUID support functions
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*
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*****************************************************************************/
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/*
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* Copyright (C) 2000 - 2018, Intel Corp.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions, and the following disclaimer,
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* without modification.
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* 2. Redistributions in binary form must reproduce at minimum a disclaimer
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* substantially similar to the "NO WARRANTY" disclaimer below
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* ("Disclaimer") and any redistribution must be conditioned upon
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* including a substantially similar Disclaimer requirement for further
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* binary redistribution.
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* 3. Neither the names of the above-listed copyright holders nor the names
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* of any contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* Alternatively, this software may be distributed under the terms of the
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* GNU General Public License ("GPL") version 2 as published by the Free
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* Software Foundation.
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*
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* NO WARRANTY
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
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* IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGES.
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*/
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#include <acpi/acpi.h>
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#include "accommon.h"
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#define _COMPONENT ACPI_COMPILER
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ACPI_MODULE_NAME("utuuid")
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#if (defined ACPI_ASL_COMPILER || defined ACPI_EXEC_APP || defined ACPI_HELP_APP)
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/*
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* UUID support functions.
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*
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* This table is used to convert an input UUID ascii string to a 16 byte
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* buffer and the reverse. The table maps a UUID buffer index 0-15 to
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* the index within the 36-byte UUID string where the associated 2-byte
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* hex value can be found.
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*
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* 36-byte UUID strings are of the form:
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* aabbccdd-eeff-gghh-iijj-kkllmmnnoopp
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* Where aa-pp are one byte hex numbers, made up of two hex digits
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*
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* Note: This table is basically the inverse of the string-to-offset table
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* found in the ACPI spec in the description of the to_UUID macro.
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*/
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const u8 acpi_gbl_map_to_uuid_offset[UUID_BUFFER_LENGTH] = {
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6, 4, 2, 0, 11, 9, 16, 14, 19, 21, 24, 26, 28, 30, 32, 34
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};
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/*******************************************************************************
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*
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* FUNCTION: acpi_ut_convert_string_to_uuid
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*
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* PARAMETERS: in_string - 36-byte formatted UUID string
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* uuid_buffer - Where the 16-byte UUID buffer is returned
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*
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* RETURN: None. Output data is returned in the uuid_buffer
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*
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* DESCRIPTION: Convert a 36-byte formatted UUID string to 16-byte UUID buffer
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*
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******************************************************************************/
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void acpi_ut_convert_string_to_uuid(char *in_string, u8 *uuid_buffer)
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{
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u32 i;
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for (i = 0; i < UUID_BUFFER_LENGTH; i++) {
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uuid_buffer[i] =
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(acpi_ut_ascii_char_to_hex
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(in_string[acpi_gbl_map_to_uuid_offset[i]]) << 4);
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uuid_buffer[i] |=
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acpi_ut_ascii_char_to_hex(in_string
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[acpi_gbl_map_to_uuid_offset[i] +
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1]);
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}
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}
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#endif
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