FreeCalypso > hg > freecalypso-tools
annotate miscutil/srec-regions.c @ 710:c1f72d807250
CHANGES: tiffs-mkfs addition
author | Mychaela Falconia <falcon@freecalypso.org> |
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date | Sat, 23 May 2020 03:39:48 +0000 |
parents | 7ef3343161d6 |
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srec-regions utility written, compiles
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1 /* |
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2 * This program parses an S-record file (TI's *.m0 or otherwise), identifies |
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3 * the set of discontiguous regions into which this SREC image deposits bits, |
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4 * and lists these identified regions. |
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5 */ |
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6 |
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7 #include <sys/types.h> |
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8 #include <stdio.h> |
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9 #include <ctype.h> |
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10 #include <string.h> |
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11 #include <strings.h> |
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12 #include <stdlib.h> |
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13 |
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14 char *infname; |
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15 FILE *inf; |
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16 char srecbuf[1024]; |
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17 u_char srecbin[256]; |
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18 int lineno, state; |
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19 u_long region_start, region_end; |
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20 |
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21 decode_hex_byte(s) |
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22 char *s; |
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23 { |
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24 register int u, l; |
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25 |
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26 if (!isxdigit(s[0]) || !isxdigit(s[1])) |
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27 return(-1); |
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28 if (isdigit(s[0])) |
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29 u = s[0] - '0'; |
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30 else if (isupper(s[0])) |
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31 u = s[0] - 'A' + 10; |
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32 else |
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33 u = s[0] - 'a' + 10; |
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34 if (isdigit(s[1])) |
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35 l = s[1] - '0'; |
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36 else if (isupper(s[1])) |
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37 l = s[1] - 'A' + 10; |
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38 else |
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39 l = s[1] - 'a' + 10; |
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40 return((u << 4) | l); |
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41 } |
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42 |
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43 srec2bin() |
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44 { |
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45 register int i, l, b; |
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46 |
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47 l = decode_hex_byte(srecbuf + 2); |
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48 if (l < 1) { |
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49 fprintf(stderr, "%s line %d: S-record length octet is bad\n", |
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50 infname, lineno); |
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51 exit(1); |
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52 } |
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53 srecbin[0] = l; |
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54 for (i = 1; i <= l; i++) { |
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55 b = decode_hex_byte(srecbuf + i*2 + 2); |
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56 if (b < 0) { |
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57 fprintf(stderr, "%s line %d: hex decode error\n", |
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58 infname, lineno); |
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59 exit(1); |
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60 } |
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61 srecbin[i] = b; |
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62 } |
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63 return(0); |
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64 } |
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65 |
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66 srec_cksum() |
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67 { |
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68 u_char accum; |
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69 register int i, len; |
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70 |
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71 len = srecbin[0] + 1; |
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72 accum = 0; |
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73 for (i = 0; i < len; i++) |
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74 accum += srecbin[i]; |
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75 if (accum != 0xFF) { |
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76 fprintf(stderr, "%s line %d: bad checksum\n", infname, lineno); |
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77 exit(1); |
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78 } |
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79 return(0); |
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80 } |
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81 |
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82 main(argc, argv) |
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83 char **argv; |
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84 { |
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85 register int i; |
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86 u_long curaddr; |
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87 int datalen; |
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88 |
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89 if (argc != 2) { |
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90 fprintf(stderr, "usage: %s image.m0\n", argv[0]); |
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91 exit(1); |
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92 } |
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93 infname = argv[1]; |
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94 inf = fopen(infname, "r"); |
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95 if (!inf) { |
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96 perror(infname); |
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97 exit(1); |
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98 } |
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99 |
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100 state = 0; |
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101 for (lineno = 1; ; lineno++) { |
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102 if (!fgets(srecbuf, sizeof srecbuf, inf)) { |
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103 fprintf(stderr, "%s: premature EOF\n", infname); |
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104 exit(1); |
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105 } |
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106 if (srecbuf[0] != 'S') { |
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107 fprintf(stderr, "%s line %d: not an S-record\n", |
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108 infname, lineno); |
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109 exit(1); |
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110 } |
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111 switch (srecbuf[1]) { |
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112 case '0': |
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113 if (state == 0) |
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114 break; |
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115 else |
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116 goto badtype; |
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117 case '3': |
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118 if (state == 0) |
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119 goto badtype; |
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120 else |
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121 break; |
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122 case '7': |
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123 if (state == 2) |
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124 break; |
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125 else |
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126 goto badtype; |
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127 default: |
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128 badtype: |
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129 fprintf(stderr, |
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130 "%s line %d: S-record type unexpected\n", |
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131 infname, lineno); |
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132 exit(1); |
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133 } |
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134 srec2bin(); |
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135 srec_cksum(); |
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136 switch (srecbuf[1]) { |
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137 case '0': |
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138 state = 1; |
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139 continue; |
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140 case '3': |
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141 if (srecbin[0] < 6) { |
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142 fprintf(stderr, |
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143 "%s line %d: S3 record is too short\n", |
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144 infname, lineno); |
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145 exit(1); |
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146 } |
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147 curaddr = (srecbin[1] << 24) | (srecbin[2] << 16) | |
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148 (srecbin[3] << 8) | srecbin[4]; |
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149 datalen = srecbin[0] - 5; |
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150 if (state < 2) { |
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151 region_start = curaddr; |
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152 region_end = curaddr + datalen; |
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153 state = 2; |
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154 continue; |
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155 } |
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156 if (curaddr != region_end) { |
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157 printf("0x%08lX to 0x%08lX (%lu bytes)\n", |
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158 region_start, region_end, |
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159 region_end - region_start); |
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160 region_start = curaddr; |
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161 } |
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162 region_end = curaddr + datalen; |
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163 continue; |
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164 case '7': |
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165 if (srecbin[0] < 5) { |
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166 fprintf(stderr, |
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167 "%s line %d: S7 record is too short\n", |
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168 infname, lineno); |
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169 exit(1); |
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170 } |
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171 printf("0x%08lX to 0x%08lX (%lu bytes)\n", |
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172 region_start, region_end, |
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173 region_end - region_start); |
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174 printf("S7 address 0x%02X%02X%02X%02X\n", srecbin[1], |
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175 srecbin[2], srecbin[3], srecbin[4]); |
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176 exit(0); |
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177 default: |
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178 abort(); |
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179 } |
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180 } |
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181 } |