btools: Obsolete pre hostprog era cc_tools.
[dragonfly.git] / sbin / hammer2 / icrc.c
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1/*-
2 * Copyright (c) 2005-2010 Daniel Braniss <danny@cs.huji.ac.il>
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 *
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24 * SUCH DAMAGE.
25 *
26 */
27/*
28 | iSCSI
29 | $Id: isc_subr.c 560 2009-05-07 07:37:49Z danny $
30 */
31
32#include <sys/types.h>
33#include <sys/uuid.h>
5bc5bca2 34#include <sys/dmsg.h>
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35
36#include <vfs/hammer2/hammer2_disk.h>
37
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38#include "hammer2.h"
39
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40/*****************************************************************/
41/* */
42/* CRC LOOKUP TABLE */
43/* ================ */
44/* The following CRC lookup table was generated automagically */
45/* by the Rocksoft^tm Model CRC Algorithm Table Generation */
46/* Program V1.0 using the following model parameters: */
47/* */
48/* Width : 4 bytes. */
49/* Poly : 0x1EDC6F41L */
50/* Reverse : TRUE. */
51/* */
52/* For more information on the Rocksoft^tm Model CRC Algorithm, */
53/* see the document titled "A Painless Guide to CRC Error */
54/* Detection Algorithms" by Ross Williams */
55/* (ross@guest.adelaide.edu.au.). This document is likely to be */
56/* in the FTP archive "ftp.adelaide.edu.au/pub/rocksoft". */
57/* */
58/*****************************************************************/
59
02454b3e 60static const uint32_t crc32Table[256] = {
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61 0x00000000L, 0xF26B8303L, 0xE13B70F7L, 0x1350F3F4L,
62 0xC79A971FL, 0x35F1141CL, 0x26A1E7E8L, 0xD4CA64EBL,
63 0x8AD958CFL, 0x78B2DBCCL, 0x6BE22838L, 0x9989AB3BL,
64 0x4D43CFD0L, 0xBF284CD3L, 0xAC78BF27L, 0x5E133C24L,
65 0x105EC76FL, 0xE235446CL, 0xF165B798L, 0x030E349BL,
66 0xD7C45070L, 0x25AFD373L, 0x36FF2087L, 0xC494A384L,
67 0x9A879FA0L, 0x68EC1CA3L, 0x7BBCEF57L, 0x89D76C54L,
68 0x5D1D08BFL, 0xAF768BBCL, 0xBC267848L, 0x4E4DFB4BL,
69 0x20BD8EDEL, 0xD2D60DDDL, 0xC186FE29L, 0x33ED7D2AL,
70 0xE72719C1L, 0x154C9AC2L, 0x061C6936L, 0xF477EA35L,
71 0xAA64D611L, 0x580F5512L, 0x4B5FA6E6L, 0xB93425E5L,
72 0x6DFE410EL, 0x9F95C20DL, 0x8CC531F9L, 0x7EAEB2FAL,
73 0x30E349B1L, 0xC288CAB2L, 0xD1D83946L, 0x23B3BA45L,
74 0xF779DEAEL, 0x05125DADL, 0x1642AE59L, 0xE4292D5AL,
75 0xBA3A117EL, 0x4851927DL, 0x5B016189L, 0xA96AE28AL,
76 0x7DA08661L, 0x8FCB0562L, 0x9C9BF696L, 0x6EF07595L,
77 0x417B1DBCL, 0xB3109EBFL, 0xA0406D4BL, 0x522BEE48L,
78 0x86E18AA3L, 0x748A09A0L, 0x67DAFA54L, 0x95B17957L,
79 0xCBA24573L, 0x39C9C670L, 0x2A993584L, 0xD8F2B687L,
80 0x0C38D26CL, 0xFE53516FL, 0xED03A29BL, 0x1F682198L,
81 0x5125DAD3L, 0xA34E59D0L, 0xB01EAA24L, 0x42752927L,
82 0x96BF4DCCL, 0x64D4CECFL, 0x77843D3BL, 0x85EFBE38L,
83 0xDBFC821CL, 0x2997011FL, 0x3AC7F2EBL, 0xC8AC71E8L,
84 0x1C661503L, 0xEE0D9600L, 0xFD5D65F4L, 0x0F36E6F7L,
85 0x61C69362L, 0x93AD1061L, 0x80FDE395L, 0x72966096L,
86 0xA65C047DL, 0x5437877EL, 0x4767748AL, 0xB50CF789L,
87 0xEB1FCBADL, 0x197448AEL, 0x0A24BB5AL, 0xF84F3859L,
88 0x2C855CB2L, 0xDEEEDFB1L, 0xCDBE2C45L, 0x3FD5AF46L,
89 0x7198540DL, 0x83F3D70EL, 0x90A324FAL, 0x62C8A7F9L,
90 0xB602C312L, 0x44694011L, 0x5739B3E5L, 0xA55230E6L,
91 0xFB410CC2L, 0x092A8FC1L, 0x1A7A7C35L, 0xE811FF36L,
92 0x3CDB9BDDL, 0xCEB018DEL, 0xDDE0EB2AL, 0x2F8B6829L,
93 0x82F63B78L, 0x709DB87BL, 0x63CD4B8FL, 0x91A6C88CL,
94 0x456CAC67L, 0xB7072F64L, 0xA457DC90L, 0x563C5F93L,
95 0x082F63B7L, 0xFA44E0B4L, 0xE9141340L, 0x1B7F9043L,
96 0xCFB5F4A8L, 0x3DDE77ABL, 0x2E8E845FL, 0xDCE5075CL,
97 0x92A8FC17L, 0x60C37F14L, 0x73938CE0L, 0x81F80FE3L,
98 0x55326B08L, 0xA759E80BL, 0xB4091BFFL, 0x466298FCL,
99 0x1871A4D8L, 0xEA1A27DBL, 0xF94AD42FL, 0x0B21572CL,
100 0xDFEB33C7L, 0x2D80B0C4L, 0x3ED04330L, 0xCCBBC033L,
101 0xA24BB5A6L, 0x502036A5L, 0x4370C551L, 0xB11B4652L,
102 0x65D122B9L, 0x97BAA1BAL, 0x84EA524EL, 0x7681D14DL,
103 0x2892ED69L, 0xDAF96E6AL, 0xC9A99D9EL, 0x3BC21E9DL,
104 0xEF087A76L, 0x1D63F975L, 0x0E330A81L, 0xFC588982L,
105 0xB21572C9L, 0x407EF1CAL, 0x532E023EL, 0xA145813DL,
106 0x758FE5D6L, 0x87E466D5L, 0x94B49521L, 0x66DF1622L,
107 0x38CC2A06L, 0xCAA7A905L, 0xD9F75AF1L, 0x2B9CD9F2L,
108 0xFF56BD19L, 0x0D3D3E1AL, 0x1E6DCDEEL, 0xEC064EEDL,
109 0xC38D26C4L, 0x31E6A5C7L, 0x22B65633L, 0xD0DDD530L,
110 0x0417B1DBL, 0xF67C32D8L, 0xE52CC12CL, 0x1747422FL,
111 0x49547E0BL, 0xBB3FFD08L, 0xA86F0EFCL, 0x5A048DFFL,
112 0x8ECEE914L, 0x7CA56A17L, 0x6FF599E3L, 0x9D9E1AE0L,
113 0xD3D3E1ABL, 0x21B862A8L, 0x32E8915CL, 0xC083125FL,
114 0x144976B4L, 0xE622F5B7L, 0xF5720643L, 0x07198540L,
115 0x590AB964L, 0xAB613A67L, 0xB831C993L, 0x4A5A4A90L,
116 0x9E902E7BL, 0x6CFBAD78L, 0x7FAB5E8CL, 0x8DC0DD8FL,
117 0xE330A81AL, 0x115B2B19L, 0x020BD8EDL, 0xF0605BEEL,
118 0x24AA3F05L, 0xD6C1BC06L, 0xC5914FF2L, 0x37FACCF1L,
119 0x69E9F0D5L, 0x9B8273D6L, 0x88D28022L, 0x7AB90321L,
120 0xAE7367CAL, 0x5C18E4C9L, 0x4F48173DL, 0xBD23943EL,
121 0xF36E6F75L, 0x0105EC76L, 0x12551F82L, 0xE03E9C81L,
122 0x34F4F86AL, 0xC69F7B69L, 0xD5CF889DL, 0x27A40B9EL,
123 0x79B737BAL, 0x8BDCB4B9L, 0x988C474DL, 0x6AE7C44EL,
124 0xBE2DA0A5L, 0x4C4623A6L, 0x5F16D052L, 0xAD7D5351L
125};
126
127uint32_t
128hammer2_icrc32(const void *buf, size_t size)
129{
130 const uint8_t *p = buf;
131 uint32_t crc = 0;
132
133 crc = crc ^ 0xffffffff;
134 while (size--)
135 crc = crc32Table[(crc ^ *p++) & 0xff] ^ (crc >> 8);
136 crc = crc ^ 0xffffffff;
137 return crc;
138}
139
140uint32_t
141hammer2_icrc32c(const void *buf, size_t size, uint32_t crc)
142{
143 const uint8_t *p = buf;
144
145 crc = crc ^ 0xffffffff;
146 while (size--)
147 crc = crc32Table[(crc ^ *p++) & 0xff] ^ (crc >> 8);
148 crc = crc ^ 0xffffffff;
149 return crc;
150}