FreeCalypso > hg > freecalypso-tools

annotate target-utils/loadagent/cmd_memload.c @ 926:6a0aa8d36d06

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rvinterf backslash escape: introduce libprint The new helper function library named libprint is meant to replace the badly misnamed libg23, and will soon contain functions for printing all of the same kinds of GPF TST packets that are now handled in libg23. However, we are also moving safe_print_trace() from libasync to this new library, and changing it to emit our new backslash escape format.
author Mychaela Falconia <falcon@freecalypso.org>
date Tue, 23 May 2023 03:47:46 +0000
parents 0da2cf5a999c
children
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Mychaela Falconia <falcon@freecalypso.org>
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1 /*
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2 * This module implements the ML (memory load) command, which will be
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3 * used by fc-chainload.
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4 *
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5 * The sole argument to the ML command is the body of an S3 record
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6 * with the initial "S3" characters stripped, i.e., starting with the
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7 * "count" byte, followed by the address, data and checksum bytes
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8 * exactly as in the original S3 record.
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9 */
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10
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11 #include "types.h"
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12
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13 void
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14 cmd_memload(argbulk)
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15 char *argbulk;
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16 {
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17 char *argv[2], *s;
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18 u8 srecbin[256], cksum;
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19 int len, i, c;
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20 u32 addr;
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21
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22 if (parse_args(argbulk, 1, 1, argv, 0) < 0)
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23 return;
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24 s = argv[0];
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25 if (decode_hex_digits(s, 2, &len) < 0) {
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26 inv: printf("ERROR: ML argument is invalid\n");
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27 return;
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28 }
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29 s += 2;
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30 if (len < 6)
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31 goto inv;
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32 srecbin[0] = len;
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33 for (i = 1; i <= len; i++) {
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34 if (decode_hex_digits(s, 2, &c) < 0)
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35 goto inv;
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36 s += 2;
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37 srecbin[i] = c;
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38 }
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39 cksum = 0;
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40 for (i = 0; i <= len; i++)
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41 cksum += srecbin[i];
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42 if (cksum != 0xFF) {
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43 printf("ERROR: bad ML S-record checksum\n");
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44 return;
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45 }
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46 len -= 5;
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47 addr = ((u32)srecbin[1] << 24) |
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48 ((u32)srecbin[2] << 16) |
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49 ((u32)srecbin[3] << 8) |
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50 (u32)srecbin[4];
99
9214118ae941 target-utils: use of bcopy() changed to memcpy()
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51 memcpy(addr, srecbin + 5, len);
0
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52 }