FreeCalypso > hg > fc-tourmaline

annotate bwsplash/pbm2c.c @ 268:f2e52cab0a73

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abb_inth.c: check all interrupt causes, not just one The original code used if - else if - else if etc constructs, thus the first detected interrupt was the only one handled. However, Iota ITSTATREG is a clear-on-read register, thus if we only handle the first detected interrupt and skip checking the others, then the other interrupts will be lost, if more than one interrupt happened to occur in one ABB interrupt handling cycle - a form of rare race condition. Change the code to check all interrupts that were read in this cycle.
author Mychaela Falconia <falcon@freecalypso.org>
date Sun, 13 Jun 2021 18:17:53 +0000
parents 4d9f24c501f3
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
195
4d9f24c501f3 bwsplash: simple splash screen for FreeCalypso Lite (smallbw)
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1 /*
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2 * This program compiles bwsplash.pbm into a C char array
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3 * for inclusion into phone UI firmware source.
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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 <stdio.h>
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8 #include <stdlib.h>
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9 #include <string.h>
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10 #include <strings.h>
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11
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12 FILE *inf, *outf;
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13 char *infname, linebuf[128];
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14 int lineno;
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15
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16 void
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17 get_input_line()
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18 {
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19 char *cp;
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20
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21 if (!fgets(linebuf, sizeof linebuf, inf)) {
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22 fprintf(stderr, "%s: premature EOF\n", infname);
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23 exit(1);
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24 }
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25 lineno++;
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26 cp = index(linebuf, '\n');
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27 if (!cp) {
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28 fprintf(stderr, "%s line %d: too long or missing newline\n",
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29 infname, lineno);
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30 exit(1);
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31 }
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32 *cp = '\0';
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33 }
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34
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35 void
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36 parse_pixel_line(outbuf, npix)
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37 u_char *outbuf;
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38 unsigned npix;
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39 {
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40 char *cp;
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41 u_char *dp;
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42 unsigned n;
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43
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44 cp = linebuf;
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45 dp = outbuf;
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46 for (n = 0; n < npix; n++) {
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47 if (*cp != '0' && *cp != '1') {
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48 inv: fprintf(stderr,
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49 "%s line %d: does not match expected line of %u 0/1 characters\n",
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50 infname, lineno, npix);
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51 exit(1);
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52 }
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53 *dp++ = *cp++ - '0';
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54 }
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55 if (*cp)
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56 goto inv;
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57 }
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58
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59 void
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60 pack_pixel_byte(bits)
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61 u_char *bits;
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62 {
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63 unsigned byte, mask, n;
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64
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65 byte = 0;
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66 for (n = 0, mask = 0x80; n < 8; n++, mask >>= 1)
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67 if (bits[n])
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68 byte |= mask;
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69 fprintf(outf, "0x%02X,", byte);
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70 }
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71
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72 main(argc, argv)
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73 char **argv;
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74 {
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75 unsigned nrow, ncol;
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76 u_char rowbuf[80];
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77
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78 if (argc != 3) {
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79 fprintf(stderr, "usage: %s pbmfile outfile\n", argv[0]);
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80 exit(1);
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81 }
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82 infname = argv[1];
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83 inf = fopen(infname, "r");
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84 if (!inf) {
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85 perror(infname);
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86 exit(1);
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87 }
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88 get_input_line();
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89 if (strcmp(linebuf, "P1")) {
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90 fprintf(stderr,
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91 "error in %s: first line is not the expected \"P1\"\n",
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92 infname);
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93 exit(1);
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94 }
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95 get_input_line();
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96 if (strcmp(linebuf, "80 30")) {
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97 fprintf(stderr,
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98 "error in %s: second line is not the expected \"80 30\"\n",
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99 infname);
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100 exit(1);
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101 }
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102 outf = fopen(argv[2], "w");
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103 if (!outf) {
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104 perror(argv[2]);
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105 exit(1);
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106 }
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107 for (nrow = 0; nrow < 30; nrow++) {
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108 get_input_line();
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109 parse_pixel_line(rowbuf, 80);
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110 putc('\t', outf);
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111 for (ncol = 0; ncol < 80; ncol += 8)
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112 pack_pixel_byte(rowbuf + ncol);
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113 putc('\n', outf);
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114 }
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115 exit(0);
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116 }