FreeCalypso > hg > freecalypso-tools

annotate target-utils/libcommon/cmd_memdump_machine.c @ 77:0f11da299b7d

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buzplayer: beginning of timer implementation
author Mychaela Falconia <falcon@freecalypso.org>
date Thu, 27 Oct 2016 04:01:16 +0000
parents e7502631a0f9
children 9214118ae941
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1 /*
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2 * This is a machine-oriented memory dump command. The output is in the
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3 * form of S3 records.
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4 */
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5
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6 #include <sys/types.h>
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7 #include "types.h"
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8
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9 void
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10 cmd_memdump_machine(argbulk)
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11 char *argbulk;
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12 {
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13 char *argv[3];
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14 u_long start, length;
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15 u_long addr;
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16 u_char srbuf[0x86], cksum;
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17 int i;
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18
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19 if (parse_args(argbulk, 2, 2, argv, 0) < 0)
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20 return;
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21 if (parse_hexarg(argv[0], 8, &start) < 0) {
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22 printf("ERROR: arg1 must be a valid 32-bit hex address\n");
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23 return;
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24 }
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25 if (parse_hexarg(argv[1], 8, &length) < 0) {
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26 printf("ERROR: arg2 must be a valid 32-bit hex value (length)\n");
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27 return;
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28 }
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29 if (start & 0x7F || length & 0x7F) {
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30 printf("ERROR: implementation limit: 128-byte alignment required\n");
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31 return;
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32 }
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33 srbuf[0] = 0x85;
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34 for (addr = start; addr < start + length; addr += 0x80) {
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35 srbuf[1] = addr >> 24;
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36 srbuf[2] = addr >> 16;
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37 srbuf[3] = addr >> 8;
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38 srbuf[4] = addr;
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39 bcopy(addr, srbuf + 5, 0x80);
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40 cksum = 0;
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41 for (i = 0; i < 0x85; i++)
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42 cksum += srbuf[i];
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43 srbuf[i] = ~cksum;
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44 putchar('S');
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45 putchar('3');
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46 for (i = 0; i < 0x86; i++)
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47 printf("%02X", srbuf[i]);
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48 putchar('\n');
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49 }
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50 }