FreeCalypso > hg > freecalypso-tools
annotate target-utils/libcommon/cmd_memdump_machine.c @ 305:3d79116be312
doc/Compal-calibration: fc-readcal failed approach documented
author | Mychaela Falconia <falcon@freecalypso.org> |
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date | Mon, 20 Nov 2017 17:51:23 +0000 |
parents | 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 memcpy(srbuf + 5, addr, 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 } |