Mercurial > hg > index.cgi
annotate lwlink/output.c @ 504:16bd8effb2f6
Update lwcc driver to actually do something useful sometimes
Make lwcc driver actually find the correct filenames for the preprocessor
and compiler.
Construct the preprocessor argument list correctly instead of assigning all
arguments to argv[0], including the trailing NULL argument.
Instruct lwasm to use the object file format.
Correct state setting for -S and -c options so they stop after the correct
phases of compilation.
author | William Astle <lost@l-w.ca> |
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date | Thu, 24 Oct 2019 22:41:04 -0600 |
parents | 9f0448022f1f |
children | 1744f2d1a821 |
rev | line source |
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0
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1 /* |
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2 output.c |
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3 Copyright © 2009 William Astle |
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4 |
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5 This file is part of LWLINK. |
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6 |
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7 LWLINK is free software: you can redistribute it and/or modify it under the |
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8 terms of the GNU General Public License as published by the Free Software |
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9 Foundation, either version 3 of the License, or (at your option) any later |
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10 version. |
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11 |
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12 This program is distributed in the hope that it will be useful, but WITHOUT |
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13 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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14 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for |
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15 more details. |
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16 |
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17 You should have received a copy of the GNU General Public License along with |
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18 this program. If not, see <http://www.gnu.org/licenses/>. |
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19 |
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20 |
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21 Actually output the binary |
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22 */ |
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23 |
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24 #include <stdio.h> |
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25 #include <stdlib.h> |
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26 #include <string.h> |
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27 |
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28 #include "lwlink.h" |
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29 |
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30 // this prevents warnings about not using the return value of fwrite() |
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31 // and, theoretically, can be replaced with a function that handles things |
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32 // better in the future |
264
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33 //#define writebytes(s, l, c, f) do { int r; r = fwrite((s), (l), (c), (f)); (void)r; } while (0) |
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34 #define writebytes(s, l, c, f) do { (void)(fwrite((s), (l), (c), (f)) && 1); } while (0) |
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35 |
148 | 36 void do_output_os9(FILE *of); |
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37 void do_output_decb(FILE *of); |
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38 void do_output_raw(FILE *of); |
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39 void do_output_lwex0(FILE *of); |
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40 void do_output_srec(FILE *of); |
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41 |
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42 void do_output(void) |
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43 { |
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44 FILE *of; |
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45 |
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46 of = fopen(outfile, "wb"); |
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47 if (!of) |
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48 { |
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49 fprintf(stderr, "Cannot open output file %s: ", outfile); |
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50 perror(""); |
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51 exit(1); |
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52 } |
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53 |
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54 switch (outformat) |
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55 { |
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56 case OUTPUT_DECB: |
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57 do_output_decb(of); |
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58 break; |
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59 |
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60 case OUTPUT_RAW: |
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61 do_output_raw(of); |
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62 break; |
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63 |
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64 case OUTPUT_LWEX0: |
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65 do_output_lwex0(of); |
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66 break; |
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67 |
148 | 68 case OUTPUT_OS9: |
69 do_output_os9(of); | |
70 break; | |
71 | |
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72 case OUTPUT_SREC: |
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73 do_output_srec(of); |
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74 break; |
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75 |
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76 default: |
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77 fprintf(stderr, "Unknown output format doing output!\n"); |
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78 exit(111); |
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79 } |
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80 |
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81 fclose(of); |
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82 } |
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83 |
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84 void do_output_decb(FILE *of) |
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85 { |
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86 int sn, sn2; |
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87 int cloc, olen; |
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88 unsigned char buf[5]; |
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89 |
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90 for (sn = 0; sn < nsects; sn++) |
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91 { |
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92 if (sectlist[sn].ptr -> flags & SECTION_BSS) |
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93 { |
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94 // no output for a BSS section |
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95 continue; |
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96 } |
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97 if (sectlist[sn].ptr -> codesize == 0) |
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98 { |
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99 // don't generate output for a zero size section |
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100 continue; |
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101 } |
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102 |
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103 // calculate the length of this output block |
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104 cloc = sectlist[sn].ptr -> loadaddress; |
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105 olen = 0; |
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106 for (sn2 = sn; sn2 < nsects; sn2++) |
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107 { |
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108 // ignore BSS sections |
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109 if (sectlist[sn2].ptr -> flags & SECTION_BSS) |
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110 continue; |
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111 // ignore zero length sections |
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112 if (sectlist[sn2].ptr -> codesize == 0) |
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113 continue; |
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114 if (cloc != sectlist[sn2].ptr -> loadaddress) |
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115 break; |
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116 olen += sectlist[sn2].ptr -> codesize; |
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117 cloc += sectlist[sn2].ptr -> codesize; |
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118 } |
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119 |
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120 // write a preamble |
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121 buf[0] = 0x00; |
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122 buf[1] = olen >> 8; |
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123 buf[2] = olen & 0xff; |
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124 buf[3] = sectlist[sn].ptr -> loadaddress >> 8; |
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125 buf[4] = sectlist[sn].ptr -> loadaddress & 0xff; |
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126 writebytes(buf, 1, 5, of); |
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127 for (; sn < sn2; sn++) |
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128 { |
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129 if (sectlist[sn].ptr -> flags & SECTION_BSS) |
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130 continue; |
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131 if (sectlist[sn].ptr -> codesize == 0) |
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132 continue; |
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133 writebytes(sectlist[sn].ptr -> code, 1, sectlist[sn].ptr -> codesize, of); |
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134 } |
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135 sn--; |
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136 } |
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137 // write a postamble |
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138 buf[0] = 0xff; |
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139 buf[1] = 0x00; |
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140 buf[2] = 0x00; |
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141 buf[3] = linkscript.execaddr >> 8; |
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142 buf[4] = linkscript.execaddr & 0xff; |
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143 writebytes(buf, 1, 5, of); |
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144 } |
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145 |
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146 void do_output_raw(FILE *of) |
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147 { |
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148 int nskips = 0; // used to output blanks for BSS inline |
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149 int sn; |
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150 |
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151 for (sn = 0; sn < nsects; sn++) |
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152 { |
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153 if (sectlist[sn].ptr -> flags & SECTION_BSS) |
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154 { |
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155 // no output for a BSS section |
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156 nskips += sectlist[sn].ptr -> codesize; |
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157 continue; |
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158 } |
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159 while (nskips > 0) |
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160 { |
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161 // the "" is not an error - it turns into a single NUL byte! |
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162 writebytes("", 1, 1, of); |
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163 nskips--; |
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164 } |
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165 writebytes(sectlist[sn].ptr -> code, 1, sectlist[sn].ptr -> codesize, of); |
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166 } |
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167 } |
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168 |
344
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169 void do_output_srec(FILE *of) |
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170 { |
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171 const int SRECLEN = 16; |
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172 |
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173 int sn; |
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174 int remainingcodebytes; |
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175 |
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176 int codeaddr; |
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177 int i; |
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178 int recaddr = 0; |
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179 int recdlen = 0; |
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180 int recsum; |
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181 int reccnt = -1; |
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182 unsigned char* sectcode; |
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183 // no header yet; unnecessary |
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184 |
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185 for (sn = 0; sn < nsects; sn++) // check all sections |
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186 { |
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187 if (sectlist[sn].ptr -> flags & SECTION_BSS) // ignore BSS sections |
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188 continue; |
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189 if (sectlist[sn].ptr -> codesize == 0) // ignore empty sections |
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190 continue; |
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191 |
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192 recaddr = sectlist[sn].ptr -> loadaddress; |
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193 remainingcodebytes = sectlist[sn].ptr -> codesize; |
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194 sectcode = sectlist[sn].ptr -> code; |
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195 |
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196 while (remainingcodebytes) |
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197 { |
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198 recdlen = (SRECLEN>remainingcodebytes)?remainingcodebytes:SRECLEN; |
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199 recsum = recdlen + 3; |
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200 codeaddr = recaddr - sectlist[sn].ptr -> loadaddress; |
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201 fprintf(of, "S1%02X%04X", recdlen + 3, recaddr & 0xffff); |
344
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202 for (i = 0; i < recdlen; i++) |
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203 { |
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204 fprintf(of, "%02X", sectcode[codeaddr+i]); |
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205 recsum += sectcode[codeaddr+i]; |
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206 } |
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207 recsum += (recaddr >> 8) & 0xFF; |
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208 recsum += recaddr & 0xFF; |
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209 fprintf(of, "%02X\r\n", (unsigned char)(~recsum)); |
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210 reccnt += 1; |
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211 remainingcodebytes -= recdlen; |
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212 recaddr += recdlen; |
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213 } |
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214 } |
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215 // S9 record as a footer to inform about start addr |
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216 recsum = 3; |
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217 recsum += (linkscript.execaddr >> 8) & 0xFF; |
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218 recsum += linkscript.execaddr & 0xFF; |
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219 fprintf(of,"S903%04X%02X\r\n",linkscript.execaddr,(unsigned char)(~recsum)); |
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220 } |
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221 |
0
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222 void do_output_lwex0(FILE *of) |
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223 { |
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224 int nskips = 0; // used to output blanks for BSS inline |
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225 int sn; |
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226 int codedatasize = 0; |
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227 unsigned char buf[32]; |
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228 |
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229 // calculate items for the file header |
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230 for (sn = 0; sn < nsects; sn++) |
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231 { |
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232 if (sectlist[sn].ptr -> flags & SECTION_BSS) |
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233 { |
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234 // no output for a BSS section |
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235 nskips += sectlist[sn].ptr -> codesize; |
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236 continue; |
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237 } |
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238 codedatasize += nskips; |
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239 nskips = 0; |
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240 codedatasize += sectlist[sn].ptr -> codesize; |
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241 } |
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242 |
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243 // output the file header |
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244 buf[0] = 'L'; |
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245 buf[1] = 'W'; |
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246 buf[2] = 'E'; |
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247 buf[3] = 'X'; |
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248 buf[4] = 0; // version 0 |
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249 buf[5] = 0; // low stack |
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250 buf[6] = linkscript.stacksize / 256; |
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251 buf[7] = linkscript.stacksize & 0xff; |
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252 buf[8] = nskips / 256; |
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253 buf[9] = nskips & 0xff; |
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254 buf[10] = codedatasize / 256; |
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255 buf[11] = codedatasize & 0xff; |
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256 buf[12] = linkscript.execaddr / 256; |
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257 buf[13] = linkscript.execaddr & 0xff; |
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258 memset(buf + 14, 0, 18); |
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259 |
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260 writebytes(buf, 1, 32, of); |
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261 // output the data |
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262 // NOTE: disjoint load addresses will not work correctly!!!!! |
180 | 263 nskips = 0; |
0
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264 for (sn = 0; sn < nsects; sn++) |
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265 { |
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266 if (sectlist[sn].ptr -> flags & SECTION_BSS) |
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267 { |
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268 // no output for a BSS section |
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269 nskips += sectlist[sn].ptr -> codesize; |
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270 continue; |
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271 } |
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272 while (nskips > 0) |
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273 { |
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274 // the "" is not an error - it turns into a single NUL byte! |
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275 writebytes("", 1, 1, of); |
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276 nskips--; |
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277 } |
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278 writebytes(sectlist[sn].ptr -> code, 1, sectlist[sn].ptr -> codesize, of); |
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279 } |
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280 } |
148 | 281 |
282 void os9crc(unsigned char crc[3], unsigned char b) | |
283 { | |
284 b ^= crc[0]; | |
285 crc[0] = crc[1]; | |
286 crc[1] = crc[2]; | |
287 crc[1] ^= b >> 7; | |
288 crc[2] = b << 1; | |
289 crc[1] ^= b >> 2; | |
290 crc[2] ^= b << 6; | |
291 b ^= b << 1; | |
292 b ^= b << 2; | |
293 b ^= b << 4; | |
294 if (b & 0x80) | |
295 { | |
296 crc[0] ^= 0x80; | |
297 crc[2] ^= 0x21; | |
298 } | |
299 } | |
300 | |
301 | |
302 void do_output_os9(FILE *of) | |
303 { | |
304 int sn; | |
305 int codedatasize = 0; | |
306 int bsssize = 0; | |
151
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307 int nameoff; |
148 | 308 int i; |
309 | |
310 unsigned char buf[16]; | |
311 unsigned char crc[3]; | |
312 | |
313 // calculate items for the file header | |
314 for (sn = 0; sn < nsects; sn++) | |
315 { | |
316 if (sectlist[sn].ptr -> flags & SECTION_BSS) | |
317 { | |
318 // no output for a BSS section | |
319 bsssize += sectlist[sn].ptr -> codesize; | |
320 continue; | |
321 } | |
322 codedatasize += sectlist[sn].ptr -> codesize; | |
323 } | |
258
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324 bsssize += linkscript.stacksize; |
148 | 325 |
326 // now bss size is the data size for the module | |
327 // and codesize is the length of the module minus the module header | |
328 // and CRC | |
329 | |
151
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330 codedatasize += 13; // add in headers |
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331 nameoff = codedatasize; // we'll put the name at the end |
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332 codedatasize += 3; // add in CRC |
148 | 333 codedatasize += strlen(linkscript.name); // add in name length |
262
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334 if (linkscript.edition >= 0) |
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335 codedatasize += 1; |
148 | 336 |
337 // output the file header | |
338 buf[0] = 0x87; | |
339 buf[1] = 0xCD; | |
340 buf[2] = (codedatasize >> 8) & 0xff; | |
341 buf[3] = codedatasize & 0xff; | |
151
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342 buf[4] = (nameoff >> 8) & 0xff; |
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343 buf[5] = nameoff & 0xff; |
148 | 344 buf[6] = (linkscript.modtype << 4) | (linkscript.modlang); |
345 buf[7] = (linkscript.modattr << 4) | (linkscript.modrev); | |
346 buf[8] = (~(buf[0] ^ buf[1] ^ buf[2] ^ buf[3] ^ buf[4] ^ buf[5] ^ buf[6] ^ buf[7])) & 0xff; | |
347 buf[9] = (linkscript.execaddr >> 8) & 0xff; | |
348 buf[10] = linkscript.execaddr & 0xff; | |
349 buf[11] = (bsssize >> 8) & 0xff; | |
350 buf[12] = bsssize & 0xff; | |
351 | |
352 crc[0] = 0xff; | |
353 crc[1] = 0xff; | |
354 crc[2] = 0xff; | |
355 | |
356 os9crc(crc, buf[0]); | |
357 os9crc(crc, buf[1]); | |
358 os9crc(crc, buf[2]); | |
359 os9crc(crc, buf[3]); | |
360 os9crc(crc, buf[4]); | |
361 os9crc(crc, buf[5]); | |
362 os9crc(crc, buf[6]); | |
363 os9crc(crc, buf[7]); | |
364 os9crc(crc, buf[8]); | |
365 os9crc(crc, buf[9]); | |
366 os9crc(crc, buf[10]); | |
367 os9crc(crc, buf[11]); | |
368 os9crc(crc, buf[12]); | |
369 | |
370 | |
371 writebytes(buf, 1, 13, of); | |
372 | |
373 // output the data | |
374 // NOTE: disjoint load addresses will not work correctly!!!!! | |
375 for (sn = 0; sn < nsects; sn++) | |
376 { | |
377 if (sectlist[sn].ptr -> flags & SECTION_BSS) | |
378 { | |
379 // no output for a BSS section | |
380 continue; | |
381 } | |
382 writebytes(sectlist[sn].ptr -> code, 1, sectlist[sn].ptr -> codesize, of); | |
383 for (i = 0; i < sectlist[sn].ptr -> codesize; i++) | |
384 os9crc(crc, sectlist[sn].ptr -> code[i]); | |
385 } | |
386 | |
151
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387 // output the name |
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388 for (i = 0; linkscript.name[i + 1]; i++) |
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389 { |
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390 writebytes(linkscript.name + i, 1, 1, of); |
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391 os9crc(crc, linkscript.name[i]); |
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392 } |
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393 buf[0] = linkscript.name[i] | 0x80; |
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394 writebytes(buf, 1, 1, of); |
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395 os9crc(crc, buf[0]); |
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396 |
262
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397 if (linkscript.edition >= 0) |
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398 { |
320
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399 buf[0] = linkscript.edition & 0xff; |
262
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400 writebytes(buf, 1, 1, of); |
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401 os9crc(crc, buf[0]); |
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402 } |
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403 |
148 | 404 crc[0] ^= 0xff; |
405 crc[1] ^= 0xff; | |
406 crc[2] ^= 0xff; | |
407 writebytes(crc, 1, 3, of); | |
408 } |