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| Rev | Author | Line No. | Line |
|---|---|---|---|
| 6595 | serge | 1 | /****************************************************************************** |
| 2 | * |
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| 3 | * Module Name: uthex -- Hex/ASCII support functions |
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| 4 | * |
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| 5 | *****************************************************************************/ |
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| 6 | |||
| 7 | /* |
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| 8 | * Copyright (C) 2000 - 2015, Intel Corp. |
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| 9 | * All rights reserved. |
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| 10 | * |
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| 11 | * Redistribution and use in source and binary forms, with or without |
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| 12 | * modification, are permitted provided that the following conditions |
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| 13 | * are met: |
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| 14 | * 1. Redistributions of source code must retain the above copyright |
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| 15 | * notice, this list of conditions, and the following disclaimer, |
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| 16 | * without modification. |
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| 17 | * 2. Redistributions in binary form must reproduce at minimum a disclaimer |
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| 18 | * substantially similar to the "NO WARRANTY" disclaimer below |
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| 19 | * ("Disclaimer") and any redistribution must be conditioned upon |
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| 20 | * including a substantially similar Disclaimer requirement for further |
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| 21 | * binary redistribution. |
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| 22 | * 3. Neither the names of the above-listed copyright holders nor the names |
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| 23 | * of any contributors may be used to endorse or promote products derived |
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| 24 | * from this software without specific prior written permission. |
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| 25 | * |
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| 26 | * Alternatively, this software may be distributed under the terms of the |
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| 27 | * GNU General Public License ("GPL") version 2 as published by the Free |
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| 28 | * Software Foundation. |
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| 29 | * |
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| 30 | * NO WARRANTY |
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| 31 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
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| 32 | * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
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| 33 | * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR |
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| 34 | * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
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| 35 | * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
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| 36 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
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| 37 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
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| 38 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, |
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| 39 | * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING |
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| 40 | * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
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| 41 | * POSSIBILITY OF SUCH DAMAGES. |
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| 42 | */ |
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| 43 | |||
| 44 | #include |
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| 45 | #include "accommon.h" |
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| 46 | |||
| 47 | #define _COMPONENT ACPI_COMPILER |
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| 48 | ACPI_MODULE_NAME("uthex") |
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| 49 | |||
| 50 | /* Hex to ASCII conversion table */ |
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| 51 | static char acpi_gbl_hex_to_ascii[] = { |
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| 52 | '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'A', 'B', 'C', 'D', |
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| 53 | 'E', 'F' |
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| 54 | }; |
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| 55 | |||
| 56 | /******************************************************************************* |
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| 57 | * |
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| 58 | * FUNCTION: acpi_ut_hex_to_ascii_char |
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| 59 | * |
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| 60 | * PARAMETERS: integer - Contains the hex digit |
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| 61 | * position - bit position of the digit within the |
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| 62 | * integer (multiple of 4) |
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| 63 | * |
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| 64 | * RETURN: The converted Ascii character |
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| 65 | * |
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| 66 | * DESCRIPTION: Convert a hex digit to an Ascii character |
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| 67 | * |
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| 68 | ******************************************************************************/ |
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| 69 | |||
| 70 | char acpi_ut_hex_to_ascii_char(u64 integer, u32 position) |
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| 71 | { |
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| 72 | |||
| 73 | return (acpi_gbl_hex_to_ascii[(integer >> position) & 0xF]); |
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| 74 | } |
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| 75 | |||
| 76 | /******************************************************************************* |
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| 77 | * |
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| 78 | * FUNCTION: acpi_ut_ascii_char_to_hex |
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| 79 | * |
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| 80 | * PARAMETERS: hex_char - Hex character in Ascii |
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| 81 | * |
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| 82 | * RETURN: The binary value of the ascii/hex character |
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| 83 | * |
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| 84 | * DESCRIPTION: Perform ascii-to-hex translation |
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| 85 | * |
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| 86 | ******************************************************************************/ |
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| 87 | |||
| 88 | u8 acpi_ut_ascii_char_to_hex(int hex_char) |
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| 89 | { |
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| 90 | |||
| 91 | if (hex_char <= 0x39) { |
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| 92 | return ((u8)(hex_char - 0x30)); |
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| 93 | } |
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| 94 | |||
| 95 | if (hex_char <= 0x46) { |
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| 96 | return ((u8)(hex_char - 0x37)); |
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| 97 | } |
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| 98 | |||
| 99 | return ((u8)(hex_char - 0x57)); |
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| 100 | } |