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new file mode 100644
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@@ -0,0 +1,234 @@
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1
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+/*
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2
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+ * Crc - 32 + 16 BIT ANSI X3.66 + CCITT CRC checksum files
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3
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+ */
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4
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+
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5
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+#include <stdio.h>
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6
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+
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7
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+#define OK 0
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8
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+#define ERROR (-1)
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9
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+#define UPDC32(ch, crc) (crc_32_tab[((crc) ^ (ch)) & 0xff] ^ ((crc) >> 8))
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10
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+#define UPDCIT(ch, crc) (ccitt_tab[((crc) ^ (ch)) & 0xff] ^ ((crc) >> 8))
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11
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+#define UPDC16(ch, crc) (crc_16_tab[((crc) ^ (ch)) & 0xff] ^ ((crc) >> 8))
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12
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+
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13
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+/*
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14
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+ * Copyright (C) 1986 Gary S. Brown. You may use this program, or
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15
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+ * code or tables extracted from it, as desired without restriction.
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16
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+ */
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17
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+/* First, the polynomial itself and its table of feedback terms. The */
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18
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+/* polynomial is */
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19
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+/* X^32+X^26+X^23+X^22+X^16+X^12+X^11+X^10+X^8+X^7+X^5+X^4+X^2+X^1+X^0 */
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20
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+/* Note that we take it "backwards" and put the highest-order term in */
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21
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+/* the lowest-order bit. The X^32 term is "implied"; the LSB is the */
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22
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+/* X^31 term, etc. The X^0 term (usually shown as "+1") results in */
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23
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+/* the MSB being 1. */
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24
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+
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25
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+/* added CCITT (X^16+X^12+X^5+X^0) and CRC-16 (X^16+X^15+X^2+X^0) */
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26
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+/* polynomials (Heinz Repp, Feb 4 1997) */
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27
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+
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28
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+/* Note that the usual hardware shift register implementation, which */
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29
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+/* is what we're using (we're merely optimizing it by doing eight-bit */
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30
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+/* chunks at a time) shifts bits into the lowest-order term. In our */
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31
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+/* implementation, that means shifting towards the right. Why do we */
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32
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+/* do it this way? Because the calculated CRC must be transmitted in */
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33
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+/* order from highest-order term to lowest-order term. UARTs transmit */
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34
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+/* characters in order from LSB to MSB. By storing the CRC this way, */
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35
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+/* we hand it to the UART in the order low-byte to high-byte; the UART */
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36
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+/* sends each low-bit to hight-bit; and the result is transmission bit */
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37
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+/* by bit from highest- to lowest-order term without requiring any bit */
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38
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+/* shuffling on our part. Reception works similarly. */
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39
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+
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40
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+/* The feedback terms table consists of 256, 32-bit entries. Notes: */
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41
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+/* */
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42
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+/* 1. The table can be generated at runtime if desired; code to do so */
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43
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+/* is shown later. It might not be obvious, but the feedback */
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44
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+/* terms simply represent the results of eight shift/xor opera- */
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45
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+/* tions for all combinations of data and CRC register values. */
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46
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+/* */
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47
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+/* 2. The CRC accumulation logic is the same for all CRC polynomials, */
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48
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+/* be they sixteen or thirty-two bits wide. You simply choose the */
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49
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+/* appropriate table. Alternatively, because the table can be */
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50
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+/* generated at runtime, you can start by generating the table for */
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51
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+/* the polynomial in question and use exactly the same "updcrc", */
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52
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+/* if your application needn't simultaneously handle two CRC */
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53
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+/* polynomials. (Note, however, that XMODEM is strange.) */
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54
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+/* */
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55
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+/* 3. For 16-bit CRCs, the table entries need be only 16 bits wide; */
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56
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+/* of course, 32-bit entries work OK if the high 16 bits are zero. */
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57
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+/* */
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58
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+/* 4. The values must be right-shifted by eight bits by the "updcrc" */
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59
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+/* logic; the shift must be unsigned (bring in zeroes). On some */
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60
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+/* hardware you could probably optimize the shift in assembler by */
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61
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+/* using byte-swap instructions. */
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62
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+
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63
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+static unsigned long int crc_32_tab[] = { /* CRC polynomial 0xedb88320 */
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64
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+0x00000000, 0x77073096, 0xee0e612c, 0x990951ba, 0x076dc419, 0x706af48f,
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65
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+0xe963a535, 0x9e6495a3, 0x0edb8832, 0x79dcb8a4, 0xe0d5e91e, 0x97d2d988,
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66
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+0x09b64c2b, 0x7eb17cbd, 0xe7b82d07, 0x90bf1d91, 0x1db71064, 0x6ab020f2,
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67
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+0xf3b97148, 0x84be41de, 0x1adad47d, 0x6ddde4eb, 0xf4d4b551, 0x83d385c7,
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|
68
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+0x136c9856, 0x646ba8c0, 0xfd62f97a, 0x8a65c9ec, 0x14015c4f, 0x63066cd9,
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|
69
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+0xfa0f3d63, 0x8d080df5, 0x3b6e20c8, 0x4c69105e, 0xd56041e4, 0xa2677172,
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|
70
|
+0x3c03e4d1, 0x4b04d447, 0xd20d85fd, 0xa50ab56b, 0x35b5a8fa, 0x42b2986c,
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|
71
|
+0xdbbbc9d6, 0xacbcf940, 0x32d86ce3, 0x45df5c75, 0xdcd60dcf, 0xabd13d59,
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|
72
|
+0x26d930ac, 0x51de003a, 0xc8d75180, 0xbfd06116, 0x21b4f4b5, 0x56b3c423,
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|
73
|
+0xcfba9599, 0xb8bda50f, 0x2802b89e, 0x5f058808, 0xc60cd9b2, 0xb10be924,
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|
74
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+0x2f6f7c87, 0x58684c11, 0xc1611dab, 0xb6662d3d, 0x76dc4190, 0x01db7106,
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75
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+0x98d220bc, 0xefd5102a, 0x71b18589, 0x06b6b51f, 0x9fbfe4a5, 0xe8b8d433,
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76
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+0x7807c9a2, 0x0f00f934, 0x9609a88e, 0xe10e9818, 0x7f6a0dbb, 0x086d3d2d,
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|
77
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+0x91646c97, 0xe6635c01, 0x6b6b51f4, 0x1c6c6162, 0x856530d8, 0xf262004e,
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78
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+0x6c0695ed, 0x1b01a57b, 0x8208f4c1, 0xf50fc457, 0x65b0d9c6, 0x12b7e950,
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|
79
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+0x8bbeb8ea, 0xfcb9887c, 0x62dd1ddf, 0x15da2d49, 0x8cd37cf3, 0xfbd44c65,
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|
80
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+0x4db26158, 0x3ab551ce, 0xa3bc0074, 0xd4bb30e2, 0x4adfa541, 0x3dd895d7,
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81
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+0xa4d1c46d, 0xd3d6f4fb, 0x4369e96a, 0x346ed9fc, 0xad678846, 0xda60b8d0,
|
|
82
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+0x44042d73, 0x33031de5, 0xaa0a4c5f, 0xdd0d7cc9, 0x5005713c, 0x270241aa,
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|
83
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+0xbe0b1010, 0xc90c2086, 0x5768b525, 0x206f85b3, 0xb966d409, 0xce61e49f,
|
|
84
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+0x5edef90e, 0x29d9c998, 0xb0d09822, 0xc7d7a8b4, 0x59b33d17, 0x2eb40d81,
|
|
85
|
+0xb7bd5c3b, 0xc0ba6cad, 0xedb88320, 0x9abfb3b6, 0x03b6e20c, 0x74b1d29a,
|
|
86
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+0xead54739, 0x9dd277af, 0x04db2615, 0x73dc1683, 0xe3630b12, 0x94643b84,
|
|
87
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+0x0d6d6a3e, 0x7a6a5aa8, 0xe40ecf0b, 0x9309ff9d, 0x0a00ae27, 0x7d079eb1,
|
|
88
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+0xf00f9344, 0x8708a3d2, 0x1e01f268, 0x6906c2fe, 0xf762575d, 0x806567cb,
|
|
89
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+0x196c3671, 0x6e6b06e7, 0xfed41b76, 0x89d32be0, 0x10da7a5a, 0x67dd4acc,
|
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90
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+0xf9b9df6f, 0x8ebeeff9, 0x17b7be43, 0x60b08ed5, 0xd6d6a3e8, 0xa1d1937e,
|
|
91
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+0x38d8c2c4, 0x4fdff252, 0xd1bb67f1, 0xa6bc5767, 0x3fb506dd, 0x48b2364b,
|
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92
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+0xd80d2bda, 0xaf0a1b4c, 0x36034af6, 0x41047a60, 0xdf60efc3, 0xa867df55,
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93
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+0x316e8eef, 0x4669be79, 0xcb61b38c, 0xbc66831a, 0x256fd2a0, 0x5268e236,
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94
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+0xcc0c7795, 0xbb0b4703, 0x220216b9, 0x5505262f, 0xc5ba3bbe, 0xb2bd0b28,
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95
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+0x2bb45a92, 0x5cb36a04, 0xc2d7ffa7, 0xb5d0cf31, 0x2cd99e8b, 0x5bdeae1d,
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96
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+0x9b64c2b0, 0xec63f226, 0x756aa39c, 0x026d930a, 0x9c0906a9, 0xeb0e363f,
|
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97
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+0x72076785, 0x05005713, 0x95bf4a82, 0xe2b87a14, 0x7bb12bae, 0x0cb61b38,
|
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98
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+0x92d28e9b, 0xe5d5be0d, 0x7cdcefb7, 0x0bdbdf21, 0x86d3d2d4, 0xf1d4e242,
|
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99
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+0x68ddb3f8, 0x1fda836e, 0x81be16cd, 0xf6b9265b, 0x6fb077e1, 0x18b74777,
|
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100
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+0x88085ae6, 0xff0f6a70, 0x66063bca, 0x11010b5c, 0x8f659eff, 0xf862ae69,
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101
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+0x616bffd3, 0x166ccf45, 0xa00ae278, 0xd70dd2ee, 0x4e048354, 0x3903b3c2,
|
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102
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+0xa7672661, 0xd06016f7, 0x4969474d, 0x3e6e77db, 0xaed16a4a, 0xd9d65adc,
|
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103
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+0x40df0b66, 0x37d83bf0, 0xa9bcae53, 0xdebb9ec5, 0x47b2cf7f, 0x30b5ffe9,
|
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104
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+0xbdbdf21c, 0xcabac28a, 0x53b39330, 0x24b4a3a6, 0xbad03605, 0xcdd70693,
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105
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+0x54de5729, 0x23d967bf, 0xb3667a2e, 0xc4614ab8, 0x5d681b02, 0x2a6f2b94,
|
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106
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+0xb40bbe37, 0xc30c8ea1, 0x5a05df1b, 0x2d02ef8d
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|
107
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+};
|
|
108
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+
|
|
109
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+unsigned short int ccitt_tab[] = { /* CRC polynomial 0x8408 */
|
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110
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+0x0000, 0x1189, 0x2312, 0x329B, 0x4624, 0x57AD, 0x6536, 0x74BF,
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111
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+0x8C48, 0x9DC1, 0xAF5A, 0xBED3, 0xCA6C, 0xDBE5, 0xE97E, 0xF8F7,
|
|
112
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+0x1081, 0x0108, 0x3393, 0x221A, 0x56A5, 0x472C, 0x75B7, 0x643E,
|
|
113
|
+0x9CC9, 0x8D40, 0xBFDB, 0xAE52, 0xDAED, 0xCB64, 0xF9FF, 0xE876,
|
|
114
|
+0x2102, 0x308B, 0x0210, 0x1399, 0x6726, 0x76AF, 0x4434, 0x55BD,
|
|
115
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+0xAD4A, 0xBCC3, 0x8E58, 0x9FD1, 0xEB6E, 0xFAE7, 0xC87C, 0xD9F5,
|
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116
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+0x3183, 0x200A, 0x1291, 0x0318, 0x77A7, 0x662E, 0x54B5, 0x453C,
|
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117
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+0xBDCB, 0xAC42, 0x9ED9, 0x8F50, 0xFBEF, 0xEA66, 0xD8FD, 0xC974,
|
|
118
|
+0x4204, 0x538D, 0x6116, 0x709F, 0x0420, 0x15A9, 0x2732, 0x36BB,
|
|
119
|
+0xCE4C, 0xDFC5, 0xED5E, 0xFCD7, 0x8868, 0x99E1, 0xAB7A, 0xBAF3,
|
|
120
|
+0x5285, 0x430C, 0x7197, 0x601E, 0x14A1, 0x0528, 0x37B3, 0x263A,
|
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121
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+0xDECD, 0xCF44, 0xFDDF, 0xEC56, 0x98E9, 0x8960, 0xBBFB, 0xAA72,
|
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122
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+0x6306, 0x728F, 0x4014, 0x519D, 0x2522, 0x34AB, 0x0630, 0x17B9,
|
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123
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+0xEF4E, 0xFEC7, 0xCC5C, 0xDDD5, 0xA96A, 0xB8E3, 0x8A78, 0x9BF1,
|
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124
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+0x7387, 0x620E, 0x5095, 0x411C, 0x35A3, 0x242A, 0x16B1, 0x0738,
|
|
125
|
+0xFFCF, 0xEE46, 0xDCDD, 0xCD54, 0xB9EB, 0xA862, 0x9AF9, 0x8B70,
|
|
126
|
+0x8408, 0x9581, 0xA71A, 0xB693, 0xC22C, 0xD3A5, 0xE13E, 0xF0B7,
|
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127
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+0x0840, 0x19C9, 0x2B52, 0x3ADB, 0x4E64, 0x5FED, 0x6D76, 0x7CFF,
|
|
128
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+0x9489, 0x8500, 0xB79B, 0xA612, 0xD2AD, 0xC324, 0xF1BF, 0xE036,
|
|
129
|
+0x18C1, 0x0948, 0x3BD3, 0x2A5A, 0x5EE5, 0x4F6C, 0x7DF7, 0x6C7E,
|
|
130
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+0xA50A, 0xB483, 0x8618, 0x9791, 0xE32E, 0xF2A7, 0xC03C, 0xD1B5,
|
|
131
|
+0x2942, 0x38CB, 0x0A50, 0x1BD9, 0x6F66, 0x7EEF, 0x4C74, 0x5DFD,
|
|
132
|
+0xB58B, 0xA402, 0x9699, 0x8710, 0xF3AF, 0xE226, 0xD0BD, 0xC134,
|
|
133
|
+0x39C3, 0x284A, 0x1AD1, 0x0B58, 0x7FE7, 0x6E6E, 0x5CF5, 0x4D7C,
|
|
134
|
+0xC60C, 0xD785, 0xE51E, 0xF497, 0x8028, 0x91A1, 0xA33A, 0xB2B3,
|
|
135
|
+0x4A44, 0x5BCD, 0x6956, 0x78DF, 0x0C60, 0x1DE9, 0x2F72, 0x3EFB,
|
|
136
|
+0xD68D, 0xC704, 0xF59F, 0xE416, 0x90A9, 0x8120, 0xB3BB, 0xA232,
|
|
137
|
+0x5AC5, 0x4B4C, 0x79D7, 0x685E, 0x1CE1, 0x0D68, 0x3FF3, 0x2E7A,
|
|
138
|
+0xE70E, 0xF687, 0xC41C, 0xD595, 0xA12A, 0xB0A3, 0x8238, 0x93B1,
|
|
139
|
+0x6B46, 0x7ACF, 0x4854, 0x59DD, 0x2D62, 0x3CEB, 0x0E70, 0x1FF9,
|
|
140
|
+0xF78F, 0xE606, 0xD49D, 0xC514, 0xB1AB, 0xA022, 0x92B9, 0x8330,
|
|
141
|
+0x7BC7, 0x6A4E, 0x58D5, 0x495C, 0x3DE3, 0x2C6A, 0x1EF1, 0x0F78,
|
|
142
|
+};
|
|
143
|
+
|
|
144
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+unsigned short int crc_16_tab[] = { /* CRC polynomial 0xA001 */
|
|
145
|
+0x0000, 0xC0C1, 0xC181, 0x0140, 0xC301, 0x03C0, 0x0280, 0xC241,
|
|
146
|
+0xC601, 0x06C0, 0x0780, 0xC741, 0x0500, 0xC5C1, 0xC481, 0x0440,
|
|
147
|
+0xCC01, 0x0CC0, 0x0D80, 0xCD41, 0x0F00, 0xCFC1, 0xCE81, 0x0E40,
|
|
148
|
+0x0A00, 0xCAC1, 0xCB81, 0x0B40, 0xC901, 0x09C0, 0x0880, 0xC841,
|
|
149
|
+0xD801, 0x18C0, 0x1980, 0xD941, 0x1B00, 0xDBC1, 0xDA81, 0x1A40,
|
|
150
|
+0x1E00, 0xDEC1, 0xDF81, 0x1F40, 0xDD01, 0x1DC0, 0x1C80, 0xDC41,
|
|
151
|
+0x1400, 0xD4C1, 0xD581, 0x1540, 0xD701, 0x17C0, 0x1680, 0xD641,
|
|
152
|
+0xD201, 0x12C0, 0x1380, 0xD341, 0x1100, 0xD1C1, 0xD081, 0x1040,
|
|
153
|
+0xF001, 0x30C0, 0x3180, 0xF141, 0x3300, 0xF3C1, 0xF281, 0x3240,
|
|
154
|
+0x3600, 0xF6C1, 0xF781, 0x3740, 0xF501, 0x35C0, 0x3480, 0xF441,
|
|
155
|
+0x3C00, 0xFCC1, 0xFD81, 0x3D40, 0xFF01, 0x3FC0, 0x3E80, 0xFE41,
|
|
156
|
+0xFA01, 0x3AC0, 0x3B80, 0xFB41, 0x3900, 0xF9C1, 0xF881, 0x3840,
|
|
157
|
+0x2800, 0xE8C1, 0xE981, 0x2940, 0xEB01, 0x2BC0, 0x2A80, 0xEA41,
|
|
158
|
+0xEE01, 0x2EC0, 0x2F80, 0xEF41, 0x2D00, 0xEDC1, 0xEC81, 0x2C40,
|
|
159
|
+0xE401, 0x24C0, 0x2580, 0xE541, 0x2700, 0xE7C1, 0xE681, 0x2640,
|
|
160
|
+0x2200, 0xE2C1, 0xE381, 0x2340, 0xE101, 0x21C0, 0x2080, 0xE041,
|
|
161
|
+0xA001, 0x60C0, 0x6180, 0xA141, 0x6300, 0xA3C1, 0xA281, 0x6240,
|
|
162
|
+0x6600, 0xA6C1, 0xA781, 0x6740, 0xA501, 0x65C0, 0x6480, 0xA441,
|
|
163
|
+0x6C00, 0xACC1, 0xAD81, 0x6D40, 0xAF01, 0x6FC0, 0x6E80, 0xAE41,
|
|
164
|
+0xAA01, 0x6AC0, 0x6B80, 0xAB41, 0x6900, 0xA9C1, 0xA881, 0x6840,
|
|
165
|
+0x7800, 0xB8C1, 0xB981, 0x7940, 0xBB01, 0x7BC0, 0x7A80, 0xBA41,
|
|
166
|
+0xBE01, 0x7EC0, 0x7F80, 0xBF41, 0x7D00, 0xBDC1, 0xBC81, 0x7C40,
|
|
167
|
+0xB401, 0x74C0, 0x7580, 0xB541, 0x7700, 0xB7C1, 0xB681, 0x7640,
|
|
168
|
+0x7200, 0xB2C1, 0xB381, 0x7340, 0xB101, 0x71C0, 0x7080, 0xB041,
|
|
169
|
+0x5000, 0x90C1, 0x9181, 0x5140, 0x9301, 0x53C0, 0x5280, 0x9241,
|
|
170
|
+0x9601, 0x56C0, 0x5780, 0x9741, 0x5500, 0x95C1, 0x9481, 0x5440,
|
|
171
|
+0x9C01, 0x5CC0, 0x5D80, 0x9D41, 0x5F00, 0x9FC1, 0x9E81, 0x5E40,
|
|
172
|
+0x5A00, 0x9AC1, 0x9B81, 0x5B40, 0x9901, 0x59C0, 0x5880, 0x9841,
|
|
173
|
+0x8801, 0x48C0, 0x4980, 0x8941, 0x4B00, 0x8BC1, 0x8A81, 0x4A40,
|
|
174
|
+0x4E00, 0x8EC1, 0x8F81, 0x4F40, 0x8D01, 0x4DC0, 0x4C80, 0x8C41,
|
|
175
|
+0x4400, 0x84C1, 0x8581, 0x4540, 0x8701, 0x47C0, 0x4680, 0x8641,
|
|
176
|
+0x8201, 0x42C0, 0x4380, 0x8341, 0x4100, 0x81C1, 0x8081, 0x4040,
|
|
177
|
+};
|
|
178
|
+
|
|
179
|
+int crc32file (char *name)
|
|
180
|
+{
|
|
181
|
+ register FILE *fin;
|
|
182
|
+ register unsigned long crc32;
|
|
183
|
+ register unsigned short ccitt, crc16;
|
|
184
|
+ register int c;
|
|
185
|
+ register long charcnt;
|
|
186
|
+
|
|
187
|
+ crc32 = 0xFFFFFFFF; ccitt = 0xFFFF;
|
|
188
|
+ crc16 = charcnt = 0;
|
|
189
|
+ if ((fin=fopen(name, "rb"))==NULL)
|
|
190
|
+ {
|
|
191
|
+ perror(name);
|
|
192
|
+ return ERROR;
|
|
193
|
+ }
|
|
194
|
+ while ((c=getc(fin))!=EOF) {
|
|
195
|
+ ++charcnt;
|
|
196
|
+ crc32 = UPDC32(c, crc32);
|
|
197
|
+ ccitt = UPDCIT(c, ccitt);
|
|
198
|
+ crc16 = UPDC16(c, crc16);
|
|
199
|
+ }
|
|
200
|
+
|
|
201
|
+ if (ferror(fin))
|
|
202
|
+ {
|
|
203
|
+ perror(name);
|
|
204
|
+ fclose(fin); return ERROR;
|
|
205
|
+ }
|
|
206
|
+ else
|
|
207
|
+ {
|
|
208
|
+ crc32 = ~crc32;
|
|
209
|
+ ccitt = ~ccitt;
|
|
210
|
+
|
|
211
|
+ printf(" %08lX %04X %04X%10ld %s\n",
|
|
212
|
+ crc32, ccitt, crc16, charcnt, name);
|
|
213
|
+ }
|
|
214
|
+
|
|
215
|
+ fclose(fin); return OK;
|
|
216
|
+}
|
|
217
|
+
|
|
218
|
+/*
|
|
219
|
+
|
|
220
|
+int main(int argc, char **argv)
|
|
221
|
+{
|
|
222
|
+ register int errors = 0;
|
|
223
|
+
|
|
224
|
+ puts(" CRC-32 CCITT CRC-16 size name\n"
|
|
225
|
+ "-----------------------------------------------");
|
|
226
|
+
|
|
227
|
+ while( --argc > 0)
|
|
228
|
+ errors |= crc32file( *++argv);
|
|
229
|
+ exit(errors != 0);
|
|
230
|
+}
|
|
231
|
+*/
|
|
232
|
+
|
|
233
|
+/* End of crc.c */
|
|
234
|
+
|