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annotate lwlink/readfiles.c @ 70:ceab04fd2969

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Fixed premature installation of external reference under UNDEFEXTERN pragma; should not resolve to external references until after the initial parsing pass
author lost@l-w.ca
date Sun, 10 Apr 2011 13:15:12 -0600
parents fdc11ef4115b
children fc8386b13399
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
0
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1 /*
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2 readfiles.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 Reads input files
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22
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23 */
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24
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25 #include <errno.h>
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26 #include <stdio.h>
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27 #include <stdlib.h>
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28 #include <string.h>
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29
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30 #include <lw_alloc.h>
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31 #include <lw_string.h>
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32
0
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33 #include "lwlink.h"
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34
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35 void read_lwobj16v0(fileinfo_t *fn);
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36 void read_lwar1v(fileinfo_t *fn);
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37
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38 /*
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39 The logic of reading the entire file into memory is simple. All the symbol
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40 names in the file are NUL terminated strings and can be used directly without
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41 making additional copies.
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42 */
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43 void read_file(fileinfo_t *fn)
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44 {
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45 if (!memcmp(fn -> filedata, "LWOBJ16", 8))
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46 {
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47 // read v0 LWOBJ16 file
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48 read_lwobj16v0(fn);
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49 }
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50 else if (!memcmp(fn -> filedata, "LWAR1V", 6))
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51 {
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52 // archive file
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53 read_lwar1v(fn);
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54 }
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55 else
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56 {
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57 fprintf(stderr, "%s: unknown file format\n", fn -> filename);
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58 exit(1);
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59 }
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60 }
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61
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62 void read_files(void)
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63 {
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64 int i;
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65 long size;
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66 FILE *f;
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67 long bread;
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68 for (i = 0; i < ninputfiles; i++)
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69 {
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70 if (inputfiles[i] -> islib)
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71 {
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72 char *tf;
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73 int s;
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74 int j;
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75
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76 f = NULL;
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77
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78 for (j = 0; j < nlibdirs; j++)
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79 {
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80 s = strlen(libdirs[j]) + 7 + strlen(inputfiles[i] -> filename);
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81 tf = lw_alloc(s + 1);
0
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82 sprintf(tf, "%s/lib%s.a", libdirs[j], inputfiles[i] -> filename);
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83 f = fopen(tf, "rb");
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84 if (!f)
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85 {
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86 free(tf);
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87 continue;
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88 }
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89 free(tf);
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90 break;
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91 }
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92 if (!f)
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93 {
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94 fprintf(stderr, "Can't open library: -l%s\n", inputfiles[i] -> filename);
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95 exit(1);
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96 }
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97 }
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98 else
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99 {
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100 f = fopen(inputfiles[i] -> filename, "rb");
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101 if (!f)
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102 {
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103 fprintf(stderr, "Can't open file %s:", inputfiles[i] -> filename);
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104 perror("");
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105 exit(1);
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106 }
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107 }
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108 fseek(f, 0, SEEK_END);
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109 size = ftell(f);
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110 rewind(f);
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111
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112 inputfiles[i] -> filedata = lw_alloc(size);
0
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113 inputfiles[i] -> filesize = size;
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114
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115 bread = fread(inputfiles[i] -> filedata, 1, size, f);
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116 if (bread < size)
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117 {
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118 fprintf(stderr, "Short read on file %s (%ld/%ld):", inputfiles[i] -> filename, bread, size);
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119 perror("");
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120 exit(1);
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121 }
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122
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123 fclose(f);
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124
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125 read_file(inputfiles[i]);
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126 }
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127 }
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128
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129 // this macro is used to bail out if we run off the end of the file data
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130 // while parsing - it keeps the code below cleaner
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131 #define NEXTBYTE() do { cc++; if (cc > fn -> filesize) { fprintf(stderr, "%s: invalid file format\n", fn -> filename); exit(1); } } while (0)
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132 // this macro is used to refer to the current byte in the stream
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133 #define CURBYTE() (fn -> filedata[cc < fn -> filesize ? cc : fn -> filesize - 1])
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134 // this one will leave the input pointer past the trailing NUL
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135 #define CURSTR() read_lwobj16v0_str(&cc, fn)
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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136 unsigned char *read_lwobj16v0_str(long *cc1, fileinfo_t *fn)
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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137 {
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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diff changeset
138 int cc = *cc1;
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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diff changeset
139 unsigned char *fp;
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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140 fp = &CURBYTE();
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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diff changeset
141 while (CURBYTE())
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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142 NEXTBYTE();
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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diff changeset
143 NEXTBYTE();
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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144 *cc1 = cc;
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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diff changeset
145 return fp;
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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146 }
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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diff changeset
147 // the function below can be switched to dealing with data coming from a
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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148 // source other than an in-memory byte pool by adjusting the input data
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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149 // in "fn" and the above two macros
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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150
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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151 void read_lwobj16v0(fileinfo_t *fn)
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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152 {
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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diff changeset
153 unsigned char *fp;
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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diff changeset
154 long cc;
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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155 section_t *s;
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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156 int val;
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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157 symtab_t *se;
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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158
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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159 // start reading *after* the magic number
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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160 cc = 8;
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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161
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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162 // init data
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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163 fn -> sections = NULL;
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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164 fn -> nsections = 0;
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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165
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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166 while (1)
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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167 {
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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168 // NEXTBYTE();
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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169 // bail out if no more sections
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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170 if (!(CURBYTE()))
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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171 break;
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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172
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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173 fp = CURSTR();
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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174
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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175 // we now have a section name in fp
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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176 // create new section entry
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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177 fn -> sections = lw_realloc(fn -> sections, sizeof(section_t) * (fn -> nsections + 1));
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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178 s = &(fn -> sections[fn -> nsections]);
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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179 fn -> nsections += 1;
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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180
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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181 s -> localsyms = NULL;
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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182 s -> flags = 0;
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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183 s -> codesize = 0;
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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184 s -> name = fp;
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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185 s -> loadaddress = 0;
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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186 s -> localsyms = NULL;
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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187 s -> exportedsyms = NULL;
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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188 s -> incompletes = NULL;
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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189 s -> processed = 0;
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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190 s -> file = fn;
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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191
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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192 // read flags
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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diff changeset
193 while (CURBYTE())
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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194 {
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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195 switch (CURBYTE())
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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196 {
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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197 case 0x01:
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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198 s -> flags |= SECTION_BSS;
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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199 break;
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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200
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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diff changeset
201 default:
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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202 fprintf(stderr, "%s (%s): unrecognized section flag %02X\n", fn -> filename, s -> name, (int)(CURBYTE()));
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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203 exit(1);
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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204 }
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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205 NEXTBYTE();
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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206 }
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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207 // skip NUL terminating flags
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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208 NEXTBYTE();
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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209
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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210 // now parse the local symbol table
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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diff changeset
211 while (CURBYTE())
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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diff changeset
212 {
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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diff changeset
213 fp = CURSTR();
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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diff changeset
214
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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215 // fp is the symbol name
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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216 val = (CURBYTE()) << 8;
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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217 NEXTBYTE();
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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218 val |= (CURBYTE());
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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diff changeset
219 NEXTBYTE();
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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220 // val is now the symbol value
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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221
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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222 // create symbol table entry
8
fdc11ef4115b Switched lwlink to lw_cmdline from argp and also brought in lw_alloc and lw_string to replace util.c
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diff changeset
223 se = lw_alloc(sizeof(symtab_t));
0
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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224 se -> next = s -> localsyms;
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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225 s -> localsyms = se;
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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226 se -> sym = fp;
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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227 se -> offset = val;
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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228 }
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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229 // skip terminating NUL
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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230 NEXTBYTE();
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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231
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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232 // now parse the exported symbol table
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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diff changeset
233 while (CURBYTE())
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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diff changeset
234 {
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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diff changeset
235 fp = CURSTR();
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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diff changeset
236
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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237 // fp is the symbol name
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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238 val = (CURBYTE()) << 8;
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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diff changeset
239 NEXTBYTE();
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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diff changeset
240 val |= (CURBYTE());
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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diff changeset
241 NEXTBYTE();
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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parents:
diff changeset
242 // val is now the symbol value
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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diff changeset
243
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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diff changeset
244 // create symbol table entry
8
fdc11ef4115b Switched lwlink to lw_cmdline from argp and also brought in lw_alloc and lw_string to replace util.c
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diff changeset
245 se = lw_alloc(sizeof(symtab_t));
0
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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diff changeset
246 se -> next = s -> exportedsyms;
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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diff changeset
247 s -> exportedsyms = se;
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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diff changeset
248 se -> sym = fp;
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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diff changeset
249 se -> offset = val;
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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diff changeset
250 }
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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diff changeset
251 // skip terminating NUL
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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diff changeset
252 NEXTBYTE();
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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diff changeset
253
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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diff changeset
254 // now parse the incomplete references and make a list of
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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parents:
diff changeset
255 // external references that need resolution
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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parents:
diff changeset
256 while (CURBYTE())
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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parents:
diff changeset
257 {
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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diff changeset
258 reloc_t *rp;
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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parents:
diff changeset
259 lw_expr_term_t *term;
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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diff changeset
260
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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diff changeset
261 // we have a reference
8
fdc11ef4115b Switched lwlink to lw_cmdline from argp and also brought in lw_alloc and lw_string to replace util.c
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diff changeset
262 rp = lw_alloc(sizeof(reloc_t));
0
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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diff changeset
263 rp -> next = s -> incompletes;
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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diff changeset
264 s -> incompletes = rp;
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff changeset
265 rp -> offset = 0;
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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parents:
diff changeset
266 rp -> expr = lw_expr_stack_create();
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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parents:
diff changeset
267 rp -> flags = RELOC_NORM;
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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diff changeset
268
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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diff changeset
269 // parse the expression
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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diff changeset
270 while (CURBYTE())
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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parents:
diff changeset
271 {
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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diff changeset
272 int tt = CURBYTE();
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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diff changeset
273 NEXTBYTE();
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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parents:
diff changeset
274 switch (tt)
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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diff changeset
275 {
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff changeset
276 case 0xFF:
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff changeset
277 // a flag specifier
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff changeset
278 tt = CURBYTE();
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff changeset
279 rp -> flags = tt;
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff changeset
280 NEXTBYTE();
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff changeset
281 term = NULL;
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff changeset
282 break;
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff changeset
283
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff changeset
284 case 0x01:
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff changeset
285 // 16 bit integer
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff changeset
286 tt = CURBYTE() << 8;
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff changeset
287 NEXTBYTE();
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff changeset
288 tt |= CURBYTE();
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff changeset
289 NEXTBYTE();
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff changeset
290 // normalize for negatives...
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff changeset
291 if (tt > 0x7fff)
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff changeset
292 tt -= 0x10000;
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff changeset
293 term = lw_expr_term_create_int(tt);
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff changeset
294 break;
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff changeset
295
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff changeset
296 case 0x02:
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff changeset
297 // external symbol reference
2
7317fbe024af Clean up insane number of compiler warnings under -Wall
lost@l-w.ca
parents: 0
diff changeset
298 term = lw_expr_term_create_sym((char *)CURSTR(), 0);
0
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff changeset
299 break;
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff changeset
300
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff changeset
301 case 0x03:
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff changeset
302 // internal symbol reference
2
7317fbe024af Clean up insane number of compiler warnings under -Wall
lost@l-w.ca
parents: 0
diff changeset
303 term = lw_expr_term_create_sym((char *)CURSTR(), 1);
0
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff changeset
304 break;
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff changeset
305
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff changeset
306 case 0x04:
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff changeset
307 // operator
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff changeset
308 term = lw_expr_term_create_oper(CURBYTE());
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff changeset
309 NEXTBYTE();
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff changeset
310 break;
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff changeset
311
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff changeset
312 case 0x05:
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff changeset
313 // section base reference (NULL internal reference is
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff changeset
314 // the section base address
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff changeset
315 term = lw_expr_term_create_sym(NULL, 1);
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff changeset
316 break;
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff changeset
317
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff changeset
318 default:
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff changeset
319 fprintf(stderr, "%s (%s): bad relocation expression (%02X)\n", fn -> filename, s -> name, tt);
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff changeset
320 exit(1);
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff changeset
321 }
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff changeset
322 if (term)
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff changeset
323 {
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff changeset
324 lw_expr_stack_push(rp -> expr, term);
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff changeset
325 lw_expr_term_free(term);
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff changeset
326 }
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff changeset
327 }
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff changeset
328 // skip the NUL
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff changeset
329 NEXTBYTE();
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff changeset
330
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff changeset
331 // fetch the offset
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff changeset
332 rp -> offset = CURBYTE() << 8;
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff changeset
333 NEXTBYTE();
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff changeset
334 rp -> offset |= CURBYTE() & 0xff;
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff changeset
335 NEXTBYTE();
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff changeset
336 }
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff changeset
337 // skip the NUL terminating the relocations
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff changeset
338 NEXTBYTE();
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff changeset
339
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff changeset
340 // now set code location and size and verify that the file
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff changeset
341 // contains data going to the end of the code (if !SECTION_BSS)
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff changeset
342 s -> codesize = CURBYTE() << 8;
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff changeset
343 NEXTBYTE();
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff changeset
344 s -> codesize |= CURBYTE();
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff changeset
345 NEXTBYTE();
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff changeset
346
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff changeset
347 s -> code = &(CURBYTE());
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff changeset
348
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff changeset
349 // skip the code if we're not in a BSS section
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff changeset
350 if (!(s -> flags & SECTION_BSS))
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff changeset
351 {
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff changeset
352 int i;
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff changeset
353 for (i = 0; i < s -> codesize; i++)
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff changeset
354 NEXTBYTE();
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff changeset
355 }
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff changeset
356 }
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff changeset
357 }
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff changeset
358
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff changeset
359 /*
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff changeset
360 Read an archive file - this will create a "sub" record and farm out the
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff changeset
361 parsing of the sub files to the regular file parsers
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff changeset
362
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff changeset
363 The archive file format consists of the 6 byte magic number followed by a
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff changeset
364 series of records as follows:
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff changeset
365
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff changeset
366 - NUL terminated file name
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff changeset
367 - 32 bit file length in big endian order
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff changeset
368 - the file data
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff changeset
369
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff changeset
370 An empty file name indicates the end of the file.
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff changeset
371
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff changeset
372 */
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff changeset
373 void read_lwar1v(fileinfo_t *fn)
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff changeset
374 {
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff changeset
375 unsigned long cc = 6;
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff changeset
376 unsigned long flen;
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff changeset
377 unsigned long l;
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff changeset
378 for (;;)
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff changeset
379 {
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff changeset
380 if (cc >= fn -> filesize || !(fn -> filedata[cc]))
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff changeset
381 return;
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff changeset
382
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff changeset
383 for (l = cc; cc < fn -> filesize && fn -> filedata[cc]; cc++)
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff changeset
384 /* do nothing */ ;
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff changeset
385
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff changeset
386 cc++;
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff changeset
387
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff changeset
388 if (cc >= fn -> filesize)
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff changeset
389 {
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff changeset
390 fprintf(stderr, "Malformed archive file %s.\n", fn -> filename);
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff changeset
391 exit(1);
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff changeset
392 }
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff changeset
393
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff changeset
394 if (cc + 4 > fn -> filesize)
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff changeset
395 return;
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff changeset
396
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff changeset
397 flen = (fn -> filedata[cc++] << 24);
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff changeset
398 flen |= (fn -> filedata[cc++] << 16);
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff changeset
399 flen |= (fn -> filedata[cc++] << 8);
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff changeset
400 flen |= (fn -> filedata[cc++]);
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff changeset
401
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff changeset
402 if (flen == 0)
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff changeset
403 return;
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff changeset
404
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff changeset
405 if (cc + flen > fn -> filesize)
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff changeset
406 {
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff changeset
407 fprintf(stderr, "Malformed archive file %s.\n", fn -> filename);
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff changeset
408 exit(1);
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff changeset
409 }
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff changeset
410
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff changeset
411 // add the "sub" input file
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff changeset
412 fn -> subs = lw_realloc(fn -> subs, sizeof(fileinfo_t *) * (fn -> nsubs + 1));
8
fdc11ef4115b Switched lwlink to lw_cmdline from argp and also brought in lw_alloc and lw_string to replace util.c
lost@l-w.ca
parents: 2
diff changeset
413 fn -> subs[fn -> nsubs] = lw_alloc(sizeof(fileinfo_t));
0
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff changeset
414 memset(fn -> subs[fn -> nsubs], 0, sizeof(fileinfo_t));
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff changeset
415 fn -> subs[fn -> nsubs] -> filedata = fn -> filedata + cc;
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff changeset
416 fn -> subs[fn -> nsubs] -> filesize = flen;
2
7317fbe024af Clean up insane number of compiler warnings under -Wall
lost@l-w.ca
parents: 0
diff changeset
417 fn -> subs[fn -> nsubs] -> filename = lw_strdup((char *)(fn -> filedata + l));
0
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff changeset
418 fn -> subs[fn -> nsubs] -> parent = fn;
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff changeset
419 fn -> subs[fn -> nsubs] -> forced = fn -> forced;
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff changeset
420 read_file(fn -> subs[fn -> nsubs]);
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff changeset
421 fn -> nsubs++;
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff changeset
422 cc += flen;
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff changeset
423 }
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff changeset
424 }