1 | /*--------------------------------------------------------------------------------- |
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2 | $Id$ |
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3 | |
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4 | bin2s: convert a binary file to a gcc asm module |
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5 | for gfx/foo.bin it'll write foo_bin (an array of char) |
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6 | foo_bin_end, and foo_bin_len (an unsigned int) |
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7 | for 4bit.chr it'll write _4bit_chr, _4bit_chr_end, and |
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8 | _4bit_chr_len |
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9 | |
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10 | |
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11 | Copyright 2003 - 2005 Damian Yerrick |
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12 | |
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13 | Permission is hereby granted, free of charge, to any person obtaining |
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14 | a copy of this software and associated documentation files (the |
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15 | "Software"), to deal in the Software without restriction, including |
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16 | without limitation the rights to use, copy, modify, merge, publish, |
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17 | distribute, sublicense, and/or sell copies of the Software, and to |
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18 | permit persons to whom the Software is furnished to do so, subject to |
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19 | the following conditions: |
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20 | |
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21 | The above copyright notice and this permission notice shall be |
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22 | included in all copies or substantial portions of the Software. |
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23 | |
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24 | THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, |
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25 | EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES |
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26 | OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND |
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27 | NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS |
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28 | BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN |
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29 | AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF |
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30 | OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS |
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31 | IN THE SOFTWARE. |
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32 | |
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33 | ---------------------------------------------------------------------------------*/ |
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34 | |
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35 | |
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36 | |
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37 | /* |
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38 | .align |
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39 | .global SomeLabel_len |
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40 | .int 1234 |
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41 | .global SomeLabel |
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42 | .byte blah,blah,blah,blah... |
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43 | */ |
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44 | |
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45 | #include <stdio.h> |
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46 | #include <stdlib.h> |
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47 | #include <ctype.h> |
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48 | |
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49 | /*--------------------------------------------------------------------------------- |
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50 | Print the closest valid C identifier to a given word. |
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51 | ---------------------------------------------------------------------------------*/ |
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52 | void strnident(FILE *fout, const char *src) { |
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53 | //--------------------------------------------------------------------------------- |
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54 | char got_first = 0; |
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55 | |
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56 | while(*src != 0) { |
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57 | |
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58 | int s = *src++; |
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59 | |
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60 | /* initial digit */ |
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61 | if(isdigit(s) && !got_first) |
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62 | fputc('_', fout); /* stick a '_' before an initial digit */ |
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63 | |
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64 | /* convert only out-of-range characters */ |
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65 | if(!isalpha(s) && !isdigit(s) && (s != '_')) { |
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66 | if(s == '-' || s == '.' || s == '/') s = '_'; |
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67 | else |
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68 | s = 0; |
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69 | } |
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70 | |
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71 | if(s) { |
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72 | fputc(s, fout); |
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73 | got_first = 1; |
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74 | } |
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75 | } |
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76 | } |
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77 | |
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78 | |
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79 | //--------------------------------------------------------------------------------- |
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80 | int main(int argc, char **argv) { |
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81 | //--------------------------------------------------------------------------------- |
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82 | FILE *fin; |
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83 | size_t filelen; |
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84 | int linelen; |
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85 | int arg; |
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86 | int alignment = 4; |
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87 | if(argc < 2) { |
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88 | fputs( "bin2s - convert binary files to assembly language\n" |
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89 | "typical usage: bin2s foo.bin bar.bin baz.bin > foo.s\n", stderr); |
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90 | return 1; |
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91 | } |
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92 | |
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93 | for(arg = 1; arg < argc; arg++) { |
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94 | |
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95 | if (argv[arg][0] == '-') |
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96 | { |
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97 | switch (argv[arg][1]) |
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98 | { |
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99 | case 'a': |
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100 | |
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101 | alignment = (argc > arg) ? strtoul(argv[++arg], 0, 0) : 0; |
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102 | |
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103 | if ( alignment == 0 ) alignment =4; |
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104 | break; |
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105 | } |
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106 | continue; |
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107 | } |
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108 | |
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109 | |
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110 | fin = fopen(argv[arg], "rb"); |
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111 | |
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112 | if(!fin) { |
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113 | fputs("bin2s: could not open ", stderr); |
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114 | perror(argv[arg]); |
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115 | return 1; |
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116 | } |
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117 | |
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118 | fseek(fin, 0, SEEK_END); |
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119 | filelen = ftell(fin); |
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120 | rewind(fin); |
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121 | |
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122 | if(filelen == 0) { |
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123 | fclose(fin); |
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124 | fprintf(stderr, "bin2s: warning: skipping empty file %s\n", argv[arg]); |
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125 | continue; |
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126 | } |
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127 | |
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128 | char *ptr = argv[arg]; |
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129 | char chr; |
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130 | char *filename = NULL; |
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131 | |
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132 | while ( (chr=*ptr) ) { |
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133 | |
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134 | if ( chr == '\\' || chr == '/') { |
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135 | |
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136 | filename = ptr; |
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137 | } |
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138 | |
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139 | ptr++; |
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140 | } |
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141 | |
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142 | if ( NULL != filename ) { |
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143 | filename++; |
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144 | } else { |
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145 | filename = argv[arg]; |
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146 | } |
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147 | |
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148 | /*--------------------------------------------------------------------------------- |
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149 | Generate the prolog for each included file. It has two purposes: |
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150 | |
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151 | 1. provide length info, and |
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152 | 2. align to user defined boundary, default is 32bit |
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153 | |
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154 | ---------------------------------------------------------------------------------*/ |
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155 | fprintf( stdout, "/* Generated by BIN2S - please don't edit directly */\n" |
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156 | "\t.section .rodata\n" |
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157 | "\t.balign %d\n" |
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158 | "\t.global ", alignment); |
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159 | strnident(stdout, filename); |
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160 | fputs("_size\n", stdout); |
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161 | strnident(stdout, filename); |
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162 | printf("_size: .int %lu\n\t.global ", (unsigned long)filelen); |
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163 | strnident(stdout, filename); |
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164 | fputs("\n", stdout); |
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165 | strnident(stdout, filename); |
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166 | fputs(":\n\t.byte ", stdout); |
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167 | |
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168 | linelen = 0; |
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169 | |
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170 | while(filelen > 0) { |
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171 | unsigned char c = fgetc(fin); |
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172 | |
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173 | printf("%3u", (unsigned int)c); |
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174 | filelen--; |
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175 | |
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176 | /* don't put a comma after the last item */ |
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177 | if(filelen) { |
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178 | |
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179 | /* break after every 16th number */ |
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180 | if(++linelen >= 16) { |
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181 | linelen = 0; |
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182 | fputs("\n\t.byte ", stdout); |
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183 | } else { |
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184 | fputc(',', stdout); |
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185 | } |
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186 | } |
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187 | } |
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188 | |
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189 | fputs("\n\n\t.global ", stdout); |
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190 | strnident(stdout, filename); |
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191 | fputs("_end\n", stdout); |
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192 | strnident(stdout, filename); |
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193 | fputs("_end:\n\n", stdout); |
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194 | |
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195 | |
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196 | fclose(fin); |
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197 | } |
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198 | |
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199 | return 0; |
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200 | } |
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201 | |
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