FreeCalypso > hg > fc-sim-sniff

annotate sw/sniff-dec/main.c @ 56:966a54303d68

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simsniff-dec: factor out high-level decoding
author Mychaela Falconia <falcon@freecalypso.org>
date Wed, 04 Oct 2023 01:18:50 +0000
parents 118a12e9483b
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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41
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Mychaela Falconia <falcon@freecalypso.org>
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1 /*
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Mychaela Falconia <falcon@freecalypso.org>
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2 * simtrace3-sniff-dec main module: reading the log file.
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Mychaela Falconia <falcon@freecalypso.org>
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3 */
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Mychaela Falconia <falcon@freecalypso.org>
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4
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5 #include <ctype.h>
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6 #include <stdio.h>
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7 #include <stdlib.h>
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Mychaela Falconia <falcon@freecalypso.org>
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8 #include <string.h>
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Mychaela Falconia <falcon@freecalypso.org>
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9 #include <strings.h>
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10
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Mychaela Falconia <falcon@freecalypso.org>
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11 char *log_filename;
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Mychaela Falconia <falcon@freecalypso.org>
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12 char linebuf[128];
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13 int lineno;
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Mychaela Falconia <falcon@freecalypso.org>
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14 unsigned fpga_word;
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15
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16 static void
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Mychaela Falconia <falcon@freecalypso.org>
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17 process_line()
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18 {
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Mychaela Falconia <falcon@freecalypso.org>
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19 char *cp;
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Mychaela Falconia <falcon@freecalypso.org>
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20
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Mychaela Falconia <falcon@freecalypso.org>
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21 cp = index(linebuf, '\n');
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Mychaela Falconia <falcon@freecalypso.org>
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22 if (!cp) {
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Mychaela Falconia <falcon@freecalypso.org>
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23 fprintf(stderr, "%s line %d: too long or missing newline\n",
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Mychaela Falconia <falcon@freecalypso.org>
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24 log_filename, lineno);
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Mychaela Falconia <falcon@freecalypso.org>
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25 exit(1);
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Mychaela Falconia <falcon@freecalypso.org>
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26 }
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Mychaela Falconia <falcon@freecalypso.org>
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27 if (linebuf[0] != '[')
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Mychaela Falconia <falcon@freecalypso.org>
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28 return;
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Mychaela Falconia <falcon@freecalypso.org>
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29 cp = linebuf + 1;
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Mychaela Falconia <falcon@freecalypso.org>
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30 while (isdigit(*cp) || *cp == ':' || *cp == '.')
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31 cp++;
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Mychaela Falconia <falcon@freecalypso.org>
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32 if (*cp++ != ']') {
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33 invalid: fprintf(stderr, "%s line %d: failed to parse\n",
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Mychaela Falconia <falcon@freecalypso.org>
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34 log_filename, lineno);
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Mychaela Falconia <falcon@freecalypso.org>
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35 exit(1);
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Mychaela Falconia <falcon@freecalypso.org>
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36 }
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Mychaela Falconia <falcon@freecalypso.org>
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37 if (!isspace(*cp))
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Mychaela Falconia <falcon@freecalypso.org>
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38 goto invalid;
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Mychaela Falconia <falcon@freecalypso.org>
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39 *cp++ = '\0';
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40 if (strlen(linebuf) > 17)
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41 goto invalid;
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Mychaela Falconia <falcon@freecalypso.org>
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42 while (isspace(*cp))
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43 cp++;
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44 if (!isxdigit(cp[0]) || !isxdigit(cp[1]) || !isxdigit(cp[2]) ||
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45 !isxdigit(cp[3]) || !isspace(cp[4]))
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46 goto invalid;
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Mychaela Falconia <falcon@freecalypso.org>
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47 fpga_word = strtoul(cp, 0, 16);
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Mychaela Falconia <falcon@freecalypso.org>
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48 process_fpga_word();
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Mychaela Falconia <falcon@freecalypso.org>
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49 }
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50
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51 main(argc, argv)
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Mychaela Falconia <falcon@freecalypso.org>
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52 char **argv;
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53 {
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54 FILE *inf;
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55
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56 if (argc != 2) {
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57 fprintf(stderr, "usage: %s logfile\n", argv[0]);
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58 exit(1);
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59 }
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60 log_filename = argv[1];
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61 inf = fopen(log_filename, "r");
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62 if (!inf) {
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63 perror(log_filename);
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64 exit(1);
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65 }
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Mychaela Falconia <falcon@freecalypso.org>
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66 for (lineno = 1; fgets(linebuf, sizeof linebuf, inf); lineno++)
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67 process_line();
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68 exit(0);
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69 }