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https://opencores.org/ocsvn/or1k_old/or1k_old/trunk
[/] [or1k_old/] [trunk/] [orpmon/] [gencrc.c] - Diff between revs 820 and 822
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| Rev 820 |
Rev 822 |
| Line 45... |
Line 45... |
fo = fopen (argv[2], "rb+");
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fo = fopen (argv[2], "rb+");
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if (!fi || !fo) return 1;
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if (!fi || !fo) return 1;
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size = fread (buf, 1, MAX_SIZE, fi);
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size = fread (buf, 1, MAX_SIZE, fi);
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fclose (fi);
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fclose (fi);
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crc = crc32 (0, buf, size);
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if (*((unsigned long *)&buf[0]) != SWAP32(0xcccccccc) || *((unsigned long *)&buf[4]) != SWAP32(0xdddddddd)) {
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fprintf (stderr, "File does not have 0xcccccccc 0xdddddddd at start\n");
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return 2;
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}
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crc = crc32 (0, buf + 8, size -= 8);
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tsize = fread (buf, 1, MAX_SIZE, fo);
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tsize = fread (buf, 1, MAX_SIZE, fo);
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for (i = 0; i < tsize - 8; i++)
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for (i = 0; i < tsize - 8; i++)
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if (*((unsigned long *)&buf[i]) == SWAP32(0xcccccccc) && *((unsigned long *)&buf[i + 4]) == SWAP32(0xdddddddd)) {
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if (*((unsigned long *)&buf[i]) == SWAP32(0xcccccccc) && *((unsigned long *)&buf[i + 4]) == SWAP32(0xdddddddd)) {
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*(unsigned long *)&buf[i] = SWAP32(crc);
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*(unsigned long *)&buf[i] = SWAP32(crc);
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*(unsigned long *)&buf[i + 4] = SWAP32(size);
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*(unsigned long *)&buf[i + 4] = SWAP32(size);
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