1 /* 2 * CDDL HEADER START 3 * 4 * The contents of this file are subject to the terms of the 5 * Common Development and Distribution License, Version 1.0 only 6 * (the "License"). You may not use this file except in compliance 7 * with the License. 8 * 9 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 10 * or http://www.opensolaris.org/os/licensing. 11 * See the License for the specific language governing permissions 12 * and limitations under the License. 13 * 14 * When distributing Covered Code, include this CDDL HEADER in each 15 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 16 * If applicable, add the following below this CDDL HEADER, with the 17 * fields enclosed by brackets "[]" replaced with your own identifying 18 * information: Portions Copyright [yyyy] [name of copyright owner] 19 * 20 * CDDL HEADER END 21 */ 22 /* 23 * Copyright (c) 1996-1998 by Sun Microsystems, Inc. 24 * All rights reserved. 25 */ 26 27 #pragma ident "%Z%%M% %I% %E% SMI" 28 29 /* LINTLIBRARY */ 30 31 /* 32 * crcposix -- compute posix.2 compatable 32 bit CRC 33 * 34 * Copyright 1986, 1992 by Mortice Kern Systems Inc. All rights reserved. 35 * 36 * The POSIX.2 (draft 10) CRC algorithm. 37 * This is a 32 bit CRC with polynomial 38 * x**32 + x**26 + x**23 + x**22 + x**16 + x**12 + x**11 + x**10 + 39 * x**8 + x**7 + x**5 + x**4 + x**2 + x**1 + x**0 40 */ 41 #ifdef M_RCSID 42 #ifndef lint 43 static char rcsID[] = "$Header: /rd/src/libc/mks/rcs/m_crcpos.c 1.11 " 44 "1992/11/19 11:51:55 tj Exp $"; 45 #endif 46 #endif 47 48 #include <sys/isa_defs.h> 49 #include <mks.h> 50 51 /* layout is from the POSIX.2 Rationale */ 52 #if defined(_LP64) 53 static const unsigned int crctab[256] = { 54 #else 55 static const unsigned long crctab[256] = { 56 #endif 57 0x00000000U, 58 0x04C11DB7U, 0x09823B6EU, 0x0D4326D9U, 0x130476DCU, 0x17C56B6BU, 59 0x1A864DB2U, 0x1E475005U, 0x2608EDB8U, 0x22C9F00FU, 0x2F8AD6D6U, 60 0x2B4BCB61U, 0x350C9B64U, 0x31CD86D3U, 0x3C8EA00AU, 0x384FBDBDU, 61 0x4C11DB70U, 0x48D0C6C7U, 0x4593E01EU, 0x4152FDA9U, 0x5F15ADACU, 62 0x5BD4B01BU, 0x569796C2U, 0x52568B75U, 0x6A1936C8U, 0x6ED82B7FU, 63 0x639B0DA6U, 0x675A1011U, 0x791D4014U, 0x7DDC5DA3U, 0x709F7B7AU, 64 0x745E66CDU, 0x9823B6E0U, 0x9CE2AB57U, 0x91A18D8EU, 0x95609039U, 65 0x8B27C03CU, 0x8FE6DD8BU, 0x82A5FB52U, 0x8664E6E5U, 0xBE2B5B58U, 66 0xBAEA46EFU, 0xB7A96036U, 0xB3687D81U, 0xAD2F2D84U, 0xA9EE3033U, 67 0xA4AD16EAU, 0xA06C0B5DU, 0xD4326D90U, 0xD0F37027U, 0xDDB056FEU, 68 0xD9714B49U, 0xC7361B4CU, 0xC3F706FBU, 0xCEB42022U, 0xCA753D95U, 69 0xF23A8028U, 0xF6FB9D9FU, 0xFBB8BB46U, 0xFF79A6F1U, 0xE13EF6F4U, 70 0xE5FFEB43U, 0xE8BCCD9AU, 0xEC7DD02DU, 0x34867077U, 0x30476DC0U, 71 0x3D044B19U, 0x39C556AEU, 0x278206ABU, 0x23431B1CU, 0x2E003DC5U, 72 0x2AC12072U, 0x128E9DCFU, 0x164F8078U, 0x1B0CA6A1U, 0x1FCDBB16U, 73 0x018AEB13U, 0x054BF6A4U, 0x0808D07DU, 0x0CC9CDCAU, 0x7897AB07U, 74 0x7C56B6B0U, 0x71159069U, 0x75D48DDEU, 0x6B93DDDBU, 0x6F52C06CU, 75 0x6211E6B5U, 0x66D0FB02U, 0x5E9F46BFU, 0x5A5E5B08U, 0x571D7DD1U, 76 0x53DC6066U, 0x4D9B3063U, 0x495A2DD4U, 0x44190B0DU, 0x40D816BAU, 77 0xACA5C697U, 0xA864DB20U, 0xA527FDF9U, 0xA1E6E04EU, 0xBFA1B04BU, 78 0xBB60ADFCU, 0xB6238B25U, 0xB2E29692U, 0x8AAD2B2FU, 0x8E6C3698U, 79 0x832F1041U, 0x87EE0DF6U, 0x99A95DF3U, 0x9D684044U, 0x902B669DU, 80 0x94EA7B2AU, 0xE0B41DE7U, 0xE4750050U, 0xE9362689U, 0xEDF73B3EU, 81 0xF3B06B3BU, 0xF771768CU, 0xFA325055U, 0xFEF34DE2U, 0xC6BCF05FU, 82 0xC27DEDE8U, 0xCF3ECB31U, 0xCBFFD686U, 0xD5B88683U, 0xD1799B34U, 83 0xDC3ABDEDU, 0xD8FBA05AU, 0x690CE0EEU, 0x6DCDFD59U, 0x608EDB80U, 84 0x644FC637U, 0x7A089632U, 0x7EC98B85U, 0x738AAD5CU, 0x774BB0EBU, 85 0x4F040D56U, 0x4BC510E1U, 0x46863638U, 0x42472B8FU, 0x5C007B8AU, 86 0x58C1663DU, 0x558240E4U, 0x51435D53U, 0x251D3B9EU, 0x21DC2629U, 87 0x2C9F00F0U, 0x285E1D47U, 0x36194D42U, 0x32D850F5U, 0x3F9B762CU, 88 0x3B5A6B9BU, 0x0315D626U, 0x07D4CB91U, 0x0A97ED48U, 0x0E56F0FFU, 89 0x1011A0FAU, 0x14D0BD4DU, 0x19939B94U, 0x1D528623U, 0xF12F560EU, 90 0xF5EE4BB9U, 0xF8AD6D60U, 0xFC6C70D7U, 0xE22B20D2U, 0xE6EA3D65U, 91 0xEBA91BBCU, 0xEF68060BU, 0xD727BBB6U, 0xD3E6A601U, 0xDEA580D8U, 92 0xDA649D6FU, 0xC423CD6AU, 0xC0E2D0DDU, 0xCDA1F604U, 0xC960EBB3U, 93 0xBD3E8D7EU, 0xB9FF90C9U, 0xB4BCB610U, 0xB07DABA7U, 0xAE3AFBA2U, 94 0xAAFBE615U, 0xA7B8C0CCU, 0xA379DD7BU, 0x9B3660C6U, 0x9FF77D71U, 95 0x92B45BA8U, 0x9675461FU, 0x8832161AU, 0x8CF30BADU, 0x81B02D74U, 96 0x857130C3U, 0x5D8A9099U, 0x594B8D2EU, 0x5408ABF7U, 0x50C9B640U, 97 0x4E8EE645U, 0x4A4FFBF2U, 0x470CDD2BU, 0x43CDC09CU, 0x7B827D21U, 98 0x7F436096U, 0x7200464FU, 0x76C15BF8U, 0x68860BFDU, 0x6C47164AU, 99 0x61043093U, 0x65C52D24U, 0x119B4BE9U, 0x155A565EU, 0x18197087U, 100 0x1CD86D30U, 0x029F3D35U, 0x065E2082U, 0x0B1D065BU, 0x0FDC1BECU, 101 0x3793A651U, 0x3352BBE6U, 0x3E119D3FU, 0x3AD08088U, 0x2497D08DU, 102 0x2056CD3AU, 0x2D15EBE3U, 0x29D4F654U, 0xC5A92679U, 0xC1683BCEU, 103 0xCC2B1D17U, 0xC8EA00A0U, 0xD6AD50A5U, 0xD26C4D12U, 0xDF2F6BCBU, 104 0xDBEE767CU, 0xE3A1CBC1U, 0xE760D676U, 0xEA23F0AFU, 0xEEE2ED18U, 105 0xF0A5BD1DU, 0xF464A0AAU, 0xF9278673U, 0xFDE69BC4U, 0x89B8FD09U, 106 0x8D79E0BEU, 0x803AC667U, 0x84FBDBD0U, 0x9ABC8BD5U, 0x9E7D9662U, 107 0x933EB0BBU, 0x97FFAD0CU, 0xAFB010B1U, 0xAB710D06U, 0xA6322BDFU, 108 0xA2F33668U, 0xBCB4666DU, 0xB8757BDAU, 0xB5365D03U, 0xB1F740B4U 109 }; 110 111 /* 112 * crcposix -- compute posix.2 compatible 32 bit CRC 113 */ 114 void 115 #if defined(_LP64) 116 m_crcposix(unsigned int *crcp, const unsigned char *bp, size_t n) 117 #else 118 m_crcposix(unsigned long *crcp, const unsigned char *bp, size_t n) 119 #endif 120 { 121 while (n-- > 0) 122 *crcp = (*crcp << 8) ^ crctab[(unsigned char)((*crcp>>24)^*bp++)]; 123 } 124