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annotate lwlink/link.c @ 234:d389adbcc4ab

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Added section base and length symbols to lwlink Added the ability for a link script to define section base and section length symbols when linking. These symbols are searched for when an external reference is resolved before looking up any symbols in the various objects being linked. Also documented the new link script directives and added such directives to all default link scripts.
author William Astle <lost@l-w.ca>
date Fri, 10 Aug 2012 23:47:56 -0600
parents 4682460aed00
children e3741cf53e00
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1 /*
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2 link.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 Resolve section and symbol addresses; handle incomplete references
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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 <lw_alloc.h>
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29 #include <lw_string.h>
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30
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31 #include "expr.h"
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32 #include "lwlink.h"
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33
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34 void check_os9(void);
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35
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36 struct section_list *sectlist = NULL;
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37 int nsects = 0;
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38 static int nforced = 0;
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39 static int resolveonly = 0;
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40
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41 symlist_t *symlist = NULL;
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42
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43 void check_section_name(char *name, int *base, fileinfo_t *fn)
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44 {
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45 int sn;
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46
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47 // fprintf(stderr, "Considering sections in %s (%d) for %s\n", fn -> filename, fn -> forced, name);
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48 if (fn -> forced == 0)
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49 return;
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50
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51 for (sn = 0; sn < fn -> nsections; sn++)
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52 {
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53 // fprintf(stderr, " Considering section %s\n", fn -> sections[sn].name);
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54 if (!strcmp(name, (char *)(fn -> sections[sn].name)))
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55 {
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56 if (fn -> sections[sn].flags & SECTION_CONST)
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57 continue;
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58 // we have a match
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59 // fprintf(stderr, " Found\n");
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60 sectlist = lw_realloc(sectlist, sizeof(struct section_list) * (nsects + 1));
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61 sectlist[nsects].ptr = &(fn -> sections[sn]);
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62
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63 fn -> sections[sn].processed = 1;
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64 fn -> sections[sn].loadaddress = *base;
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65 *base += fn -> sections[sn].codesize;
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66 nsects++;
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67 // fprintf(stderr, "Adding section %s (%s)\n",fn -> sections[sn].name, fn -> filename);
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68 }
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69 }
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70 for (sn = 0; sn < fn -> nsubs; sn++)
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71 {
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72 check_section_name(name, base, fn -> subs[sn]);
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73 }
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74 }
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75
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76 void add_matching_sections(char *name, int yesflags, int noflags, int *base);
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77 void check_section_flags(int yesflags, int noflags, int *base, fileinfo_t *fn)
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78 {
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79 int sn;
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80
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81 // fprintf(stderr, "Considering sections in %s (%d) for %x/%x\n", fn -> filename, fn -> forced, yesflags, noflags);
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82
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83 if (fn -> forced == 0)
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84 return;
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85
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86 for (sn = 0; sn < fn -> nsections; sn++)
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87 {
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88 // ignore "constant" sections - they're added during the file resolve stage
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89 if (fn -> sections[sn].flags & SECTION_CONST)
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90 continue;
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91 // ignore if the noflags tell us to
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92 if (noflags && (fn -> sections[sn].flags & noflags))
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93 continue;
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94 // ignore unless the yesflags tell us not to
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95 if (yesflags && ((fn -> sections[sn].flags & yesflags) == 0))
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96 continue;
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97 // ignore it if already processed
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98 if (fn -> sections[sn].processed)
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99 continue;
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100
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101 // we have a match - now collect *all* sections of the same name!
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102 // fprintf(stderr, " Found\n");
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103 add_matching_sections((char *)(fn -> sections[sn].name), 0, 0, base);
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104
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105 // and then continue looking for sections
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106 }
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107 for (sn = 0; sn < fn -> nsubs; sn++)
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108 {
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109 check_section_flags(yesflags, noflags, base, fn -> subs[sn]);
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110 }
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111 }
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115 void add_matching_sections(char *name, int yesflags, int noflags, int *base)
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116 {
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117 int fn;
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118 if (name)
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119 {
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120 // named section
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121 // look for all instances of a section by the specified name
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122 // and resolve base addresses and add to the list
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123 for (fn = 0; fn < ninputfiles; fn++)
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124 {
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125 check_section_name(name, base, inputfiles[fn]);
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126 }
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127 }
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128 else
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129 {
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130 // wildcard section
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131 // named section
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132 // look for all instances of a section by the specified name
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133 // and resolve base addresses and add to the list
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134 for (fn = 0; fn < ninputfiles; fn++)
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135 {
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136 check_section_flags(yesflags, noflags, base, inputfiles[fn]);
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
137 }
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
138 }
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
139 }
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
140
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
141 // work out section load order and resolve base addresses for each section
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
142 // make a list of sections to load in 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
143 void resolve_sections(void)
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
144 {
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 int laddr = 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
146 int ln, sn, fn;
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
147
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
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diff changeset
148 for (ln = 0; ln < linkscript.nlines; ln++)
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
149 {
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
150 if (linkscript.lines[ln].loadat >= 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
151 laddr = linkscript.lines[ln].loadat;
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
152 add_matching_sections(linkscript.lines[ln].sectname, linkscript.lines[ln].yesflags, linkscript.lines[ln].noflags, &laddr);
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
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
154 if (linkscript.lines[ln].sectname)
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
155 {
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
156 }
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
157 else
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
158 {
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
159 // wildcard section
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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160 // look for all sections not yet processed that match 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
161
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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diff changeset
162 int f = 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
163 int fn0, sn0;
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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164 char *sname;
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 // named section
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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167 // look for all instances of a section by the specified name
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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168 // and resolve base addresses and add to the list
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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169 for (fn0 = 0; fn0 < ninputfiles; fn0++)
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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170 {
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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171 for (sn0 = 0; sn0 < inputfiles[fn0] -> nsections; sn0++)
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
172 {
156
fc8386b13399 Added 'constant' sections to object file handling for lwasm and lwlink
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parents: 155
diff changeset
173 // ignore "constant" sections
fc8386b13399 Added 'constant' sections to object file handling for lwasm and lwlink
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parents: 155
diff changeset
174 if (inputfiles[fn0] -> sections[sn0].flags & SECTION_CONST)
fc8386b13399 Added 'constant' sections to object file handling for lwasm and lwlink
lost@l-w.ca
parents: 155
diff changeset
175 continue;
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
176 // ignore if the "no flags" bit says to
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
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177 if (linkscript.lines[ln].noflags && (inputfiles[fn0] -> sections[sn0].flags & linkscript.lines[ln].noflags))
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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178 continue;
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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179 // ignore unless the yes flags tell us not to
2
7317fbe024af Clean up insane number of compiler warnings under -Wall
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parents: 0
diff changeset
180 if (linkscript.lines[ln].yesflags && ((inputfiles[fn0] -> sections[sn0].flags & linkscript.lines[ln].yesflags) == 0))
0
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
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diff changeset
181 continue;
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
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diff changeset
182 if (inputfiles[fn0] -> sections[sn0].processed == 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
183 {
2
7317fbe024af Clean up insane number of compiler warnings under -Wall
lost@l-w.ca
parents: 0
diff changeset
184 sname = (char *)(inputfiles[fn0] -> sections[sn0].name);
0
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
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diff changeset
185 for (fn = 0; fn < ninputfiles; fn++)
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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186 {
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
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diff changeset
187 for (sn = 0; sn < inputfiles[fn] -> nsections; sn++)
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
188 {
2
7317fbe024af Clean up insane number of compiler warnings under -Wall
lost@l-w.ca
parents: 0
diff changeset
189 if (!strcmp(sname, (char *)(inputfiles[fn] -> sections[sn].name)))
0
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
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diff changeset
190 {
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
191 // we have a match
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
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192 sectlist = lw_realloc(sectlist, sizeof(struct section_list) * (nsects + 1));
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
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193 sectlist[nsects].ptr = &(inputfiles[fn] -> sections[sn]);
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
194
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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diff changeset
195 inputfiles[fn] -> sections[sn].processed = 1;
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
196 if (!f && linkscript.lines[ln].loadat >= 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
197 {
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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diff changeset
198 f = 1;
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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199 sectlist[nsects].forceaddr = 1;
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
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diff changeset
200 laddr = linkscript.lines[ln].loadat;
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 }
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
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diff changeset
202 else
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
203 {
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
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diff changeset
204 sectlist[nsects].forceaddr = 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
205 }
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
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diff changeset
206 inputfiles[fn] -> sections[sn].loadaddress = laddr;
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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diff changeset
207 laddr += inputfiles[fn] -> sections[sn].codesize;
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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diff changeset
208 nsects++;
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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diff changeset
210 }
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
211 }
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
212 }
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
213 }
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
214 }
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
215 }
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
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diff changeset
216 }
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
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diff changeset
217
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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parents:
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218 // theoretically, all the base addresses are set now
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 }
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
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diff changeset
220
234
d389adbcc4ab Added section base and length symbols to lwlink
William Astle <lost@l-w.ca>
parents: 157
diff changeset
221 /* run through all sections and generate any synthetic symbols */
d389adbcc4ab Added section base and length symbols to lwlink
William Astle <lost@l-w.ca>
parents: 157
diff changeset
222 void generate_symbols(void)
d389adbcc4ab Added section base and length symbols to lwlink
William Astle <lost@l-w.ca>
parents: 157
diff changeset
223 {
d389adbcc4ab Added section base and length symbols to lwlink
William Astle <lost@l-w.ca>
parents: 157
diff changeset
224 int sn;
d389adbcc4ab Added section base and length symbols to lwlink
William Astle <lost@l-w.ca>
parents: 157
diff changeset
225 char *lastsect = NULL;
d389adbcc4ab Added section base and length symbols to lwlink
William Astle <lost@l-w.ca>
parents: 157
diff changeset
226 char sym[256];
d389adbcc4ab Added section base and length symbols to lwlink
William Astle <lost@l-w.ca>
parents: 157
diff changeset
227 int len;
d389adbcc4ab Added section base and length symbols to lwlink
William Astle <lost@l-w.ca>
parents: 157
diff changeset
228 symlist_t *se;
d389adbcc4ab Added section base and length symbols to lwlink
William Astle <lost@l-w.ca>
parents: 157
diff changeset
229 fprintf(stderr, "Generating symbols\n");
d389adbcc4ab Added section base and length symbols to lwlink
William Astle <lost@l-w.ca>
parents: 157
diff changeset
230 for (sn = 0; sn < nsects; sn++)
d389adbcc4ab Added section base and length symbols to lwlink
William Astle <lost@l-w.ca>
parents: 157
diff changeset
231 {
d389adbcc4ab Added section base and length symbols to lwlink
William Astle <lost@l-w.ca>
parents: 157
diff changeset
232 fprintf(stderr, "Section %s (%s)\n", sectlist[sn].ptr -> name, lastsect);
d389adbcc4ab Added section base and length symbols to lwlink
William Astle <lost@l-w.ca>
parents: 157
diff changeset
233 if (!lastsect || strcmp(lastsect, (char *)(sectlist[sn].ptr -> name)))
d389adbcc4ab Added section base and length symbols to lwlink
William Astle <lost@l-w.ca>
parents: 157
diff changeset
234 {
d389adbcc4ab Added section base and length symbols to lwlink
William Astle <lost@l-w.ca>
parents: 157
diff changeset
235 if (lastsect && linkscript.lensympat)
d389adbcc4ab Added section base and length symbols to lwlink
William Astle <lost@l-w.ca>
parents: 157
diff changeset
236 {
d389adbcc4ab Added section base and length symbols to lwlink
William Astle <lost@l-w.ca>
parents: 157
diff changeset
237 /* handle length symbol */
d389adbcc4ab Added section base and length symbols to lwlink
William Astle <lost@l-w.ca>
parents: 157
diff changeset
238 se = lw_alloc(sizeof(symlist_t));
d389adbcc4ab Added section base and length symbols to lwlink
William Astle <lost@l-w.ca>
parents: 157
diff changeset
239 se -> val = len;
d389adbcc4ab Added section base and length symbols to lwlink
William Astle <lost@l-w.ca>
parents: 157
diff changeset
240 snprintf(sym, 255, linkscript.lensympat, lastsect);
d389adbcc4ab Added section base and length symbols to lwlink
William Astle <lost@l-w.ca>
parents: 157
diff changeset
241 se -> sym = lw_strdup(sym);
d389adbcc4ab Added section base and length symbols to lwlink
William Astle <lost@l-w.ca>
parents: 157
diff changeset
242 se -> next = symlist;
d389adbcc4ab Added section base and length symbols to lwlink
William Astle <lost@l-w.ca>
parents: 157
diff changeset
243 symlist = se;
d389adbcc4ab Added section base and length symbols to lwlink
William Astle <lost@l-w.ca>
parents: 157
diff changeset
244 }
d389adbcc4ab Added section base and length symbols to lwlink
William Astle <lost@l-w.ca>
parents: 157
diff changeset
245 lastsect = (char *)(sectlist[sn].ptr -> name);
d389adbcc4ab Added section base and length symbols to lwlink
William Astle <lost@l-w.ca>
parents: 157
diff changeset
246 len = 0;
d389adbcc4ab Added section base and length symbols to lwlink
William Astle <lost@l-w.ca>
parents: 157
diff changeset
247 /* handle base symbol */
d389adbcc4ab Added section base and length symbols to lwlink
William Astle <lost@l-w.ca>
parents: 157
diff changeset
248 if (lastsect && linkscript.basesympat)
d389adbcc4ab Added section base and length symbols to lwlink
William Astle <lost@l-w.ca>
parents: 157
diff changeset
249 {
d389adbcc4ab Added section base and length symbols to lwlink
William Astle <lost@l-w.ca>
parents: 157
diff changeset
250 se = lw_alloc(sizeof(symlist_t));
d389adbcc4ab Added section base and length symbols to lwlink
William Astle <lost@l-w.ca>
parents: 157
diff changeset
251 se -> val = sectlist[sn].ptr -> loadaddress;
d389adbcc4ab Added section base and length symbols to lwlink
William Astle <lost@l-w.ca>
parents: 157
diff changeset
252 snprintf(sym, 255, linkscript.basesympat, lastsect);
d389adbcc4ab Added section base and length symbols to lwlink
William Astle <lost@l-w.ca>
parents: 157
diff changeset
253 se -> sym = lw_strdup(sym);
d389adbcc4ab Added section base and length symbols to lwlink
William Astle <lost@l-w.ca>
parents: 157
diff changeset
254 se -> next = symlist;
d389adbcc4ab Added section base and length symbols to lwlink
William Astle <lost@l-w.ca>
parents: 157
diff changeset
255 symlist = se;
d389adbcc4ab Added section base and length symbols to lwlink
William Astle <lost@l-w.ca>
parents: 157
diff changeset
256 }
d389adbcc4ab Added section base and length symbols to lwlink
William Astle <lost@l-w.ca>
parents: 157
diff changeset
257 }
d389adbcc4ab Added section base and length symbols to lwlink
William Astle <lost@l-w.ca>
parents: 157
diff changeset
258 len += sectlist[sn].ptr -> codesize;
d389adbcc4ab Added section base and length symbols to lwlink
William Astle <lost@l-w.ca>
parents: 157
diff changeset
259 }
d389adbcc4ab Added section base and length symbols to lwlink
William Astle <lost@l-w.ca>
parents: 157
diff changeset
260 if (lastsect && linkscript.lensympat)
d389adbcc4ab Added section base and length symbols to lwlink
William Astle <lost@l-w.ca>
parents: 157
diff changeset
261 {
d389adbcc4ab Added section base and length symbols to lwlink
William Astle <lost@l-w.ca>
parents: 157
diff changeset
262 /* handle length symbol */
d389adbcc4ab Added section base and length symbols to lwlink
William Astle <lost@l-w.ca>
parents: 157
diff changeset
263 se = lw_alloc(sizeof(symlist_t));
d389adbcc4ab Added section base and length symbols to lwlink
William Astle <lost@l-w.ca>
parents: 157
diff changeset
264 se -> val = len;
d389adbcc4ab Added section base and length symbols to lwlink
William Astle <lost@l-w.ca>
parents: 157
diff changeset
265 snprintf(sym, 255, linkscript.lensympat, lastsect);
d389adbcc4ab Added section base and length symbols to lwlink
William Astle <lost@l-w.ca>
parents: 157
diff changeset
266 se -> sym = lw_strdup(sym);
d389adbcc4ab Added section base and length symbols to lwlink
William Astle <lost@l-w.ca>
parents: 157
diff changeset
267 se -> next = symlist;
d389adbcc4ab Added section base and length symbols to lwlink
William Astle <lost@l-w.ca>
parents: 157
diff changeset
268 symlist = se;
d389adbcc4ab Added section base and length symbols to lwlink
William Astle <lost@l-w.ca>
parents: 157
diff changeset
269 }
d389adbcc4ab Added section base and length symbols to lwlink
William Astle <lost@l-w.ca>
parents: 157
diff changeset
270
d389adbcc4ab Added section base and length symbols to lwlink
William Astle <lost@l-w.ca>
parents: 157
diff changeset
271 }
d389adbcc4ab Added section base and length symbols to lwlink
William Astle <lost@l-w.ca>
parents: 157
diff changeset
272
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
273 lw_expr_stack_t *find_external_sym_recurse(char *sym, 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
274 {
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
275 int sn;
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 lw_expr_stack_t *r;
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 lw_expr_term_t *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
278 symtab_t *se;
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 int val;
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
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 for (sn = 0; sn < fn -> nsections; sn++)
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 {
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 for (se = fn -> sections[sn].exportedsyms; se; se = se -> next)
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 {
157
4682460aed00 Correct bug with handling symbol resolution and constant section handling
lost@l-w.ca
parents: 156
diff changeset
285 // fprintf(stderr, " Considering %s\n", se -> sym);
2
7317fbe024af Clean up insane number of compiler warnings under -Wall
lost@l-w.ca
parents: 0
diff changeset
286 if (!strcmp(sym, (char *)(se -> sym)))
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
287 {
157
4682460aed00 Correct bug with handling symbol resolution and constant section handling
lost@l-w.ca
parents: 156
diff changeset
288 // fprintf(stderr, " Match (%d)\n", fn -> sections[sn].processed);
156
fc8386b13399 Added 'constant' sections to object file handling for lwasm and lwlink
lost@l-w.ca
parents: 155
diff changeset
289 // if the section was not previously processed and is CONSTANT, force it in
fc8386b13399 Added 'constant' sections to object file handling for lwasm and lwlink
lost@l-w.ca
parents: 155
diff changeset
290 // otherwise error out if it is not being processed
fc8386b13399 Added 'constant' sections to object file handling for lwasm and lwlink
lost@l-w.ca
parents: 155
diff changeset
291 if (fn -> sections[sn].processed == 0)
fc8386b13399 Added 'constant' sections to object file handling for lwasm and lwlink
lost@l-w.ca
parents: 155
diff changeset
292 {
fc8386b13399 Added 'constant' sections to object file handling for lwasm and lwlink
lost@l-w.ca
parents: 155
diff changeset
293 if (fn -> sections[sn].flags & SECTION_CONST)
fc8386b13399 Added 'constant' sections to object file handling for lwasm and lwlink
lost@l-w.ca
parents: 155
diff changeset
294 {
fc8386b13399 Added 'constant' sections to object file handling for lwasm and lwlink
lost@l-w.ca
parents: 155
diff changeset
295 // add to section list
fc8386b13399 Added 'constant' sections to object file handling for lwasm and lwlink
lost@l-w.ca
parents: 155
diff changeset
296 sectlist = lw_realloc(sectlist, sizeof(struct section_list) * (nsects + 1));
fc8386b13399 Added 'constant' sections to object file handling for lwasm and lwlink
lost@l-w.ca
parents: 155
diff changeset
297 sectlist[nsects].ptr = &(fn -> sections[sn]);
fc8386b13399 Added 'constant' sections to object file handling for lwasm and lwlink
lost@l-w.ca
parents: 155
diff changeset
298 fn -> sections[sn].processed = 1;
fc8386b13399 Added 'constant' sections to object file handling for lwasm and lwlink
lost@l-w.ca
parents: 155
diff changeset
299 fn -> sections[sn].loadaddress = 0;
fc8386b13399 Added 'constant' sections to object file handling for lwasm and lwlink
lost@l-w.ca
parents: 155
diff changeset
300 nsects++;
fc8386b13399 Added 'constant' sections to object file handling for lwasm and lwlink
lost@l-w.ca
parents: 155
diff changeset
301 }
fc8386b13399 Added 'constant' sections to object file handling for lwasm and lwlink
lost@l-w.ca
parents: 155
diff changeset
302 else
fc8386b13399 Added 'constant' sections to object file handling for lwasm and lwlink
lost@l-w.ca
parents: 155
diff changeset
303 {
157
4682460aed00 Correct bug with handling symbol resolution and constant section handling
lost@l-w.ca
parents: 156
diff changeset
304 if (resolveonly == 0)
4682460aed00 Correct bug with handling symbol resolution and constant section handling
lost@l-w.ca
parents: 156
diff changeset
305 {
4682460aed00 Correct bug with handling symbol resolution and constant section handling
lost@l-w.ca
parents: 156
diff changeset
306 fprintf(stderr, "Symbol %s found in section %s (%s) which is not going to be included\n", sym, fn -> sections[sn].name, fn -> filename);
4682460aed00 Correct bug with handling symbol resolution and constant section handling
lost@l-w.ca
parents: 156
diff changeset
307 continue;
4682460aed00 Correct bug with handling symbol resolution and constant section handling
lost@l-w.ca
parents: 156
diff changeset
308 }
156
fc8386b13399 Added 'constant' sections to object file handling for lwasm and lwlink
lost@l-w.ca
parents: 155
diff changeset
309 }
fc8386b13399 Added 'constant' sections to object file handling for lwasm and lwlink
lost@l-w.ca
parents: 155
diff changeset
310 }
155
1571e150f1fd Fixed error where external references within a library file were not resolved when linking
lost@l-w.ca
parents: 149
diff changeset
311 // fprintf(stderr, "Found symbol %s in %s\n", sym, fn -> filename);
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
312 if (!(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
313 {
155
1571e150f1fd Fixed error where external references within a library file were not resolved when linking
lost@l-w.ca
parents: 149
diff changeset
314 // fprintf(stderr, " Forced\n");
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
315 fn -> forced = 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 nforced = 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
317 }
156
fc8386b13399 Added 'constant' sections to object file handling for lwasm and lwlink
lost@l-w.ca
parents: 155
diff changeset
318 if (fn -> sections[sn].flags & SECTION_CONST)
fc8386b13399 Added 'constant' sections to object file handling for lwasm and lwlink
lost@l-w.ca
parents: 155
diff changeset
319 val = se -> offset;
fc8386b13399 Added 'constant' sections to object file handling for lwasm and lwlink
lost@l-w.ca
parents: 155
diff changeset
320 else
fc8386b13399 Added 'constant' sections to object file handling for lwasm and lwlink
lost@l-w.ca
parents: 155
diff changeset
321 val = se -> offset + fn -> sections[sn].loadaddress;
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
322 r = lw_expr_stack_create();
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 term = lw_expr_term_create_int(val & 0xffff);
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(r, 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);
156
fc8386b13399 Added 'constant' sections to object file handling for lwasm and lwlink
lost@l-w.ca
parents: 155
diff changeset
326
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
327 return r;
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 }
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 }
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
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 for (sn = 0; sn < fn -> nsubs; sn++)
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 {
157
4682460aed00 Correct bug with handling symbol resolution and constant section handling
lost@l-w.ca
parents: 156
diff changeset
334 // fprintf(stderr, "Looking in %s\n", fn -> subs[sn] -> filename);
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
335 r = find_external_sym_recurse(sym, fn -> subs[sn]);
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 if (r)
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 {
155
1571e150f1fd Fixed error where external references within a library file were not resolved when linking
lost@l-w.ca
parents: 149
diff changeset
338 // fprintf(stderr, "Found symbol %s in %s\n", sym, fn -> filename);
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
339 if (!(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
340 {
155
1571e150f1fd Fixed error where external references within a library file were not resolved when linking
lost@l-w.ca
parents: 149
diff changeset
341 // fprintf(stderr, " Forced\n");
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
342 nforced = 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
343 fn -> forced = 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
344 }
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 return r;
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 }
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 return 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
349 }
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
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 // resolve all incomplete references now
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 // anything that is unresolvable at this stage will throw an error
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 // because we know the load address of every section now
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 lw_expr_stack_t *resolve_sym(char *sym, int symtype, void *state)
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 section_t *sect = state;
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 lw_expr_term_t *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
358 int val = 0, i, 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
359 lw_expr_stack_t *s;
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 symtab_t *se;
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 fileinfo_t *fp;
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
155
1571e150f1fd Fixed error where external references within a library file were not resolved when linking
lost@l-w.ca
parents: 149
diff changeset
363 // fprintf(stderr, "Looking up %s\n", sym);
1571e150f1fd Fixed error where external references within a library file were not resolved when linking
lost@l-w.ca
parents: 149
diff changeset
364
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
365 if (symtype == 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
366 {
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 // local symbol
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 if (!sym)
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 val = sect -> loadaddress;
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 goto out;
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
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 // start with this 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
375 for (se = sect -> localsyms; se; se = se -> next)
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 {
2
7317fbe024af Clean up insane number of compiler warnings under -Wall
lost@l-w.ca
parents: 0
diff changeset
377 if (!strcmp((char *)(se -> sym), sym))
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
378 {
156
fc8386b13399 Added 'constant' sections to object file handling for lwasm and lwlink
lost@l-w.ca
parents: 155
diff changeset
379 if (sect -> flags & SECTION_CONST)
fc8386b13399 Added 'constant' sections to object file handling for lwasm and lwlink
lost@l-w.ca
parents: 155
diff changeset
380 val = se -> offset;
fc8386b13399 Added 'constant' sections to object file handling for lwasm and lwlink
lost@l-w.ca
parents: 155
diff changeset
381 else
fc8386b13399 Added 'constant' sections to object file handling for lwasm and lwlink
lost@l-w.ca
parents: 155
diff changeset
382 val = se -> offset + sect -> loadaddress;
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
383 goto out;
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 }
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 // not in this section - check all sections in this 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
387 for (i = 0; i < sect -> file -> nsections; 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
388 {
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 for (se = sect -> file -> sections[i].localsyms; se; se = se -> next)
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 {
2
7317fbe024af Clean up insane number of compiler warnings under -Wall
lost@l-w.ca
parents: 0
diff changeset
391 if (!strcmp((char *)(se -> sym), sym))
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
392 {
156
fc8386b13399 Added 'constant' sections to object file handling for lwasm and lwlink
lost@l-w.ca
parents: 155
diff changeset
393 if (sect -> file -> sections[i].flags & SECTION_CONST)
fc8386b13399 Added 'constant' sections to object file handling for lwasm and lwlink
lost@l-w.ca
parents: 155
diff changeset
394 val = se -> offset;
fc8386b13399 Added 'constant' sections to object file handling for lwasm and lwlink
lost@l-w.ca
parents: 155
diff changeset
395 else
fc8386b13399 Added 'constant' sections to object file handling for lwasm and lwlink
lost@l-w.ca
parents: 155
diff changeset
396 val = se -> offset + sect -> file -> sections[i].loadaddress;
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
397 goto out;
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 }
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 }
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 }
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 // not found
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 symerr = 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
403 fprintf(stderr, "Local symbol %s not found in %s:%s\n", sanitize_symbol(sym), sect -> file -> filename, sect -> 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
404 goto outerr;
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 }
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 else
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 {
234
d389adbcc4ab Added section base and length symbols to lwlink
William Astle <lost@l-w.ca>
parents: 157
diff changeset
408 symlist_t *se;
d389adbcc4ab Added section base and length symbols to lwlink
William Astle <lost@l-w.ca>
parents: 157
diff changeset
409
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
410 // external symbol
234
d389adbcc4ab Added section base and length symbols to lwlink
William Astle <lost@l-w.ca>
parents: 157
diff changeset
411 // first look up synthesized symbols
d389adbcc4ab Added section base and length symbols to lwlink
William Astle <lost@l-w.ca>
parents: 157
diff changeset
412 for (se = symlist; se; se = se -> next)
d389adbcc4ab Added section base and length symbols to lwlink
William Astle <lost@l-w.ca>
parents: 157
diff changeset
413 {
d389adbcc4ab Added section base and length symbols to lwlink
William Astle <lost@l-w.ca>
parents: 157
diff changeset
414 if (!strcmp(se -> sym, sym))
d389adbcc4ab Added section base and length symbols to lwlink
William Astle <lost@l-w.ca>
parents: 157
diff changeset
415 {
d389adbcc4ab Added section base and length symbols to lwlink
William Astle <lost@l-w.ca>
parents: 157
diff changeset
416 val = se -> val;
d389adbcc4ab Added section base and length symbols to lwlink
William Astle <lost@l-w.ca>
parents: 157
diff changeset
417 goto out;
d389adbcc4ab Added section base and length symbols to lwlink
William Astle <lost@l-w.ca>
parents: 157
diff changeset
418 }
d389adbcc4ab Added section base and length symbols to lwlink
William Astle <lost@l-w.ca>
parents: 157
diff changeset
419 }
d389adbcc4ab Added section base and length symbols to lwlink
William Astle <lost@l-w.ca>
parents: 157
diff changeset
420
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
421 // read all files in order until found (or not found)
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 if (sect)
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 for (fp = sect -> file; fp; fp = fp -> parent)
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
425 {
157
4682460aed00 Correct bug with handling symbol resolution and constant section handling
lost@l-w.ca
parents: 156
diff changeset
426 // fprintf(stderr, "Looking in %s\n", fp -> filename);
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
427 s = find_external_sym_recurse(sym, fp);
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
428 if (s)
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
429 return s;
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
430 }
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
431 }
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
432
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
433 for (fn = 0; fn < ninputfiles; 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
434 {
157
4682460aed00 Correct bug with handling symbol resolution and constant section handling
lost@l-w.ca
parents: 156
diff changeset
435 // fprintf(stderr, "Looking in %s\n", inputfiles[fn] -> filename);
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
436 s = find_external_sym_recurse(sym, inputfiles[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
437 if (s)
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
438 return s;
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
439 }
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
440 if (sect)
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
441 {
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
442 fprintf(stderr, "External symbol %s not found in %s:%s\n", sanitize_symbol(sym), sect -> file -> filename, sect -> 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
443 }
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
444 else
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
445 {
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
446 fprintf(stderr, "External symbol %s not found\n", sym);
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
447 }
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
448 symerr = 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
449 goto outerr;
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
450 }
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
451 fprintf(stderr, "Shouldn't ever get here!!!\n");
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
452 exit(88);
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
453 out:
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
454 s = lw_expr_stack_create();
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
455 term = lw_expr_term_create_int(val & 0xffff);
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
456 lw_expr_stack_push(s, 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
457 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
458 return s;
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
459 outerr:
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
460 return 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
461 }
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
462
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
463 void resolve_references(void)
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
464 {
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
465 int sn;
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
466 reloc_t *rl;
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
467 int rval;
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
468
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
469 // resolve entry point if required
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
470 // this must resolve to an *exported* symbol and will resolve to 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
471 // first instance of that symbol
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
472 if (linkscript.execsym)
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
473 {
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
474 lw_expr_stack_t *s;
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
475
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
476 s = resolve_sym(linkscript.execsym, 0, 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
477 if (!s)
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
478 {
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
479 fprintf(stderr, "Cannot resolve exec address '%s'\n", linkscript.execsym);
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
480 symerr = 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
481 }
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
482 else
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
483 {
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
484 linkscript.execaddr = lw_expr_get_value(s);
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
485 lw_expr_stack_free(s);
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
486 }
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
487 }
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
488
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
489 for (sn = 0; sn < nsects; sn++)
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
490 {
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
491 for (rl = sectlist[sn].ptr -> incompletes; rl; rl = rl -> next)
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
492 {
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
493 // do a "simplify" on the expression
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
494 rval = lw_expr_reval(rl -> expr, resolve_sym, sectlist[sn].ptr);
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
495
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
496 // is it constant? error out if not
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
497 if (rval != 0 || !lw_expr_is_constant(rl -> expr))
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
498 {
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
499 fprintf(stderr, "Incomplete reference at %s:%s+%02X\n", sectlist[sn].ptr -> file -> filename, sectlist[sn].ptr -> name, rl -> 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
500 symerr = 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
501 }
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
502 else
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
503 {
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
504 // put the value into the relocation 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
505 rval = lw_expr_get_value(rl -> expr);
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
506 if (rl -> flags & RELOC_8BIT)
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
507 {
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
508 sectlist[sn].ptr -> code[rl -> offset] = rval & 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
509 }
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
510 else
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
511 {
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
512 sectlist[sn].ptr -> code[rl -> offset] = (rval >> 8) & 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
513 sectlist[sn].ptr -> code[rl -> offset + 1] = rval & 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
514 }
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
515 }
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
516 }
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
517 }
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
518
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
519 if (symerr)
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
520 exit(1);
148
08fb11004df9 Initial pass at OS9 module support for lwlink
lost@l-w.ca
parents: 8
diff changeset
521
08fb11004df9 Initial pass at OS9 module support for lwlink
lost@l-w.ca
parents: 8
diff changeset
522 if (outformat == OUTPUT_OS9)
08fb11004df9 Initial pass at OS9 module support for lwlink
lost@l-w.ca
parents: 8
diff changeset
523 check_os9();
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
524 }
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
525
155
1571e150f1fd Fixed error where external references within a library file were not resolved when linking
lost@l-w.ca
parents: 149
diff changeset
526 void resolve_files_aux(fileinfo_t *fn)
1571e150f1fd Fixed error where external references within a library file were not resolved when linking
lost@l-w.ca
parents: 149
diff changeset
527 {
1571e150f1fd Fixed error where external references within a library file were not resolved when linking
lost@l-w.ca
parents: 149
diff changeset
528 int sn;
1571e150f1fd Fixed error where external references within a library file were not resolved when linking
lost@l-w.ca
parents: 149
diff changeset
529 reloc_t *rl;
1571e150f1fd Fixed error where external references within a library file were not resolved when linking
lost@l-w.ca
parents: 149
diff changeset
530 lw_expr_stack_t *te;
1571e150f1fd Fixed error where external references within a library file were not resolved when linking
lost@l-w.ca
parents: 149
diff changeset
531
1571e150f1fd Fixed error where external references within a library file were not resolved when linking
lost@l-w.ca
parents: 149
diff changeset
532 int rval;
1571e150f1fd Fixed error where external references within a library file were not resolved when linking
lost@l-w.ca
parents: 149
diff changeset
533
1571e150f1fd Fixed error where external references within a library file were not resolved when linking
lost@l-w.ca
parents: 149
diff changeset
534
1571e150f1fd Fixed error where external references within a library file were not resolved when linking
lost@l-w.ca
parents: 149
diff changeset
535 if (fn -> forced == 0)
1571e150f1fd Fixed error where external references within a library file were not resolved when linking
lost@l-w.ca
parents: 149
diff changeset
536 return;
1571e150f1fd Fixed error where external references within a library file were not resolved when linking
lost@l-w.ca
parents: 149
diff changeset
537
1571e150f1fd Fixed error where external references within a library file were not resolved when linking
lost@l-w.ca
parents: 149
diff changeset
538 for (sn = 0; sn < fn -> nsections; sn++)
1571e150f1fd Fixed error where external references within a library file were not resolved when linking
lost@l-w.ca
parents: 149
diff changeset
539 {
1571e150f1fd Fixed error where external references within a library file were not resolved when linking
lost@l-w.ca
parents: 149
diff changeset
540 for (rl = fn -> sections[sn].incompletes; rl; rl = rl -> next)
1571e150f1fd Fixed error where external references within a library file were not resolved when linking
lost@l-w.ca
parents: 149
diff changeset
541 {
1571e150f1fd Fixed error where external references within a library file were not resolved when linking
lost@l-w.ca
parents: 149
diff changeset
542 // do a "simplify" on the expression
1571e150f1fd Fixed error where external references within a library file were not resolved when linking
lost@l-w.ca
parents: 149
diff changeset
543 te = lw_expr_stack_dup(rl -> expr);
1571e150f1fd Fixed error where external references within a library file were not resolved when linking
lost@l-w.ca
parents: 149
diff changeset
544 rval = lw_expr_reval(te, resolve_sym, &(fn -> sections[sn]));
1571e150f1fd Fixed error where external references within a library file were not resolved when linking
lost@l-w.ca
parents: 149
diff changeset
545
1571e150f1fd Fixed error where external references within a library file were not resolved when linking
lost@l-w.ca
parents: 149
diff changeset
546 // is it constant? error out if not
1571e150f1fd Fixed error where external references within a library file were not resolved when linking
lost@l-w.ca
parents: 149
diff changeset
547 if (rval != 0 || !lw_expr_is_constant(te))
1571e150f1fd Fixed error where external references within a library file were not resolved when linking
lost@l-w.ca
parents: 149
diff changeset
548 {
1571e150f1fd Fixed error where external references within a library file were not resolved when linking
lost@l-w.ca
parents: 149
diff changeset
549 fprintf(stderr, "Incomplete reference at %s:%s+%02X\n", fn -> filename, fn -> sections[sn].name, rl -> offset);
1571e150f1fd Fixed error where external references within a library file were not resolved when linking
lost@l-w.ca
parents: 149
diff changeset
550 symerr = 1;
1571e150f1fd Fixed error where external references within a library file were not resolved when linking
lost@l-w.ca
parents: 149
diff changeset
551 }
1571e150f1fd Fixed error where external references within a library file were not resolved when linking
lost@l-w.ca
parents: 149
diff changeset
552 lw_expr_stack_free(te);
1571e150f1fd Fixed error where external references within a library file were not resolved when linking
lost@l-w.ca
parents: 149
diff changeset
553 }
1571e150f1fd Fixed error where external references within a library file were not resolved when linking
lost@l-w.ca
parents: 149
diff changeset
554 }
1571e150f1fd Fixed error where external references within a library file were not resolved when linking
lost@l-w.ca
parents: 149
diff changeset
555
1571e150f1fd Fixed error where external references within a library file were not resolved when linking
lost@l-w.ca
parents: 149
diff changeset
556 // handle any sub files
1571e150f1fd Fixed error where external references within a library file were not resolved when linking
lost@l-w.ca
parents: 149
diff changeset
557 for (sn = 0; sn < fn -> nsubs; sn++)
1571e150f1fd Fixed error where external references within a library file were not resolved when linking
lost@l-w.ca
parents: 149
diff changeset
558 resolve_files_aux(fn -> subs[sn]);
1571e150f1fd Fixed error where external references within a library file were not resolved when linking
lost@l-w.ca
parents: 149
diff changeset
559 }
1571e150f1fd Fixed error where external references within a library file were not resolved when linking
lost@l-w.ca
parents: 149
diff changeset
560
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
561 /*
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
562 This is just a pared down version of the algo for resolving references.
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
563 */
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
564 void resolve_files(void)
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
565 {
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
566 int 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
567
157
4682460aed00 Correct bug with handling symbol resolution and constant section handling
lost@l-w.ca
parents: 156
diff changeset
568 resolveonly = 1;
4682460aed00 Correct bug with handling symbol resolution and constant section handling
lost@l-w.ca
parents: 156
diff changeset
569
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
570 // resolve entry point if required
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
571 // this must resolve to an *exported* symbol and will resolve to 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
572 // first instance of that symbol
157
4682460aed00 Correct bug with handling symbol resolution and constant section handling
lost@l-w.ca
parents: 156
diff changeset
573 // if (linkscript.execsym)
4682460aed00 Correct bug with handling symbol resolution and constant section handling
lost@l-w.ca
parents: 156
diff changeset
574 // {
4682460aed00 Correct bug with handling symbol resolution and constant section handling
lost@l-w.ca
parents: 156
diff changeset
575 // lw_expr_stack_t *s;
4682460aed00 Correct bug with handling symbol resolution and constant section handling
lost@l-w.ca
parents: 156
diff changeset
576 //
4682460aed00 Correct bug with handling symbol resolution and constant section handling
lost@l-w.ca
parents: 156
diff changeset
577 // s = resolve_sym(linkscript.execsym, 0, NULL);
4682460aed00 Correct bug with handling symbol resolution and constant section handling
lost@l-w.ca
parents: 156
diff changeset
578 // if (!s)
4682460aed00 Correct bug with handling symbol resolution and constant section handling
lost@l-w.ca
parents: 156
diff changeset
579 // {
4682460aed00 Correct bug with handling symbol resolution and constant section handling
lost@l-w.ca
parents: 156
diff changeset
580 // fprintf(stderr, "Cannot resolve exec address '%s'\n", sanitize_symbol(linkscript.execsym));
4682460aed00 Correct bug with handling symbol resolution and constant section handling
lost@l-w.ca
parents: 156
diff changeset
581 // symerr = 1;
4682460aed00 Correct bug with handling symbol resolution and constant section handling
lost@l-w.ca
parents: 156
diff changeset
582 // }
4682460aed00 Correct bug with handling symbol resolution and constant section handling
lost@l-w.ca
parents: 156
diff changeset
583 // }
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
584
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
585 do
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
586 {
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
587 nforced = 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
588 for (fn = 0; fn < ninputfiles; 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
589 {
155
1571e150f1fd Fixed error where external references within a library file were not resolved when linking
lost@l-w.ca
parents: 149
diff changeset
590 resolve_files_aux(inputfiles[fn]);
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
591 }
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
592 }
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
593 while (nforced == 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
594
157
4682460aed00 Correct bug with handling symbol resolution and constant section handling
lost@l-w.ca
parents: 156
diff changeset
595 resolveonly = 0;
4682460aed00 Correct bug with handling symbol resolution and constant section handling
lost@l-w.ca
parents: 156
diff changeset
596
4682460aed00 Correct bug with handling symbol resolution and constant section handling
lost@l-w.ca
parents: 156
diff changeset
597 // if (symerr)
4682460aed00 Correct bug with handling symbol resolution and constant section handling
lost@l-w.ca
parents: 156
diff changeset
598 // exit(1);
4682460aed00 Correct bug with handling symbol resolution and constant section handling
lost@l-w.ca
parents: 156
diff changeset
599
4682460aed00 Correct bug with handling symbol resolution and constant section handling
lost@l-w.ca
parents: 156
diff changeset
600 symerr = 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
601 // theoretically, all files referenced by other files now have "forced" set to 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
602 for (fn = 0; fn < ninputfiles; 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
603 {
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
604 if (inputfiles[fn] -> forced == 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
605 continue;
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
606
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
607 fprintf(stderr, "Warning: %s (%d) does not resolve any symbols\n", inputfiles[fn] -> filename, 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
608 }
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
609 }
148
08fb11004df9 Initial pass at OS9 module support for lwlink
lost@l-w.ca
parents: 8
diff changeset
610 void find_section_by_name_once_aux(char *name, fileinfo_t *fn, section_t **rval, int *found);
08fb11004df9 Initial pass at OS9 module support for lwlink
lost@l-w.ca
parents: 8
diff changeset
611 void find_section_by_name_once_aux(char *name, fileinfo_t *fn, section_t **rval, int *found)
08fb11004df9 Initial pass at OS9 module support for lwlink
lost@l-w.ca
parents: 8
diff changeset
612 {
08fb11004df9 Initial pass at OS9 module support for lwlink
lost@l-w.ca
parents: 8
diff changeset
613 int sn;
08fb11004df9 Initial pass at OS9 module support for lwlink
lost@l-w.ca
parents: 8
diff changeset
614
08fb11004df9 Initial pass at OS9 module support for lwlink
lost@l-w.ca
parents: 8
diff changeset
615 if (fn -> forced == 0)
08fb11004df9 Initial pass at OS9 module support for lwlink
lost@l-w.ca
parents: 8
diff changeset
616 return;
08fb11004df9 Initial pass at OS9 module support for lwlink
lost@l-w.ca
parents: 8
diff changeset
617
08fb11004df9 Initial pass at OS9 module support for lwlink
lost@l-w.ca
parents: 8
diff changeset
618 for (sn = 0; sn < fn -> nsections; sn++)
08fb11004df9 Initial pass at OS9 module support for lwlink
lost@l-w.ca
parents: 8
diff changeset
619 {
08fb11004df9 Initial pass at OS9 module support for lwlink
lost@l-w.ca
parents: 8
diff changeset
620 if (!strcmp(name, (char *)(fn -> sections[sn].name)))
08fb11004df9 Initial pass at OS9 module support for lwlink
lost@l-w.ca
parents: 8
diff changeset
621 {
08fb11004df9 Initial pass at OS9 module support for lwlink
lost@l-w.ca
parents: 8
diff changeset
622 (*found)++;
08fb11004df9 Initial pass at OS9 module support for lwlink
lost@l-w.ca
parents: 8
diff changeset
623 *rval = &(fn -> sections[sn]);
08fb11004df9 Initial pass at OS9 module support for lwlink
lost@l-w.ca
parents: 8
diff changeset
624 }
08fb11004df9 Initial pass at OS9 module support for lwlink
lost@l-w.ca
parents: 8
diff changeset
625 }
08fb11004df9 Initial pass at OS9 module support for lwlink
lost@l-w.ca
parents: 8
diff changeset
626 for (sn = 0; sn < fn -> nsubs; sn++)
08fb11004df9 Initial pass at OS9 module support for lwlink
lost@l-w.ca
parents: 8
diff changeset
627 {
08fb11004df9 Initial pass at OS9 module support for lwlink
lost@l-w.ca
parents: 8
diff changeset
628 find_section_by_name_once_aux(name, fn -> subs[sn], rval, found);
08fb11004df9 Initial pass at OS9 module support for lwlink
lost@l-w.ca
parents: 8
diff changeset
629 }
08fb11004df9 Initial pass at OS9 module support for lwlink
lost@l-w.ca
parents: 8
diff changeset
630 }
08fb11004df9 Initial pass at OS9 module support for lwlink
lost@l-w.ca
parents: 8
diff changeset
631
08fb11004df9 Initial pass at OS9 module support for lwlink
lost@l-w.ca
parents: 8
diff changeset
632 section_t *find_section_by_name_once(char *name)
08fb11004df9 Initial pass at OS9 module support for lwlink
lost@l-w.ca
parents: 8
diff changeset
633 {
08fb11004df9 Initial pass at OS9 module support for lwlink
lost@l-w.ca
parents: 8
diff changeset
634 int fn;
08fb11004df9 Initial pass at OS9 module support for lwlink
lost@l-w.ca
parents: 8
diff changeset
635 int found = 0;
08fb11004df9 Initial pass at OS9 module support for lwlink
lost@l-w.ca
parents: 8
diff changeset
636 section_t *rval = NULL;
08fb11004df9 Initial pass at OS9 module support for lwlink
lost@l-w.ca
parents: 8
diff changeset
637
08fb11004df9 Initial pass at OS9 module support for lwlink
lost@l-w.ca
parents: 8
diff changeset
638 for (fn = 0; fn < ninputfiles; fn++)
08fb11004df9 Initial pass at OS9 module support for lwlink
lost@l-w.ca
parents: 8
diff changeset
639 {
08fb11004df9 Initial pass at OS9 module support for lwlink
lost@l-w.ca
parents: 8
diff changeset
640 find_section_by_name_once_aux(name, inputfiles[fn], &rval, &found);
08fb11004df9 Initial pass at OS9 module support for lwlink
lost@l-w.ca
parents: 8
diff changeset
641 }
08fb11004df9 Initial pass at OS9 module support for lwlink
lost@l-w.ca
parents: 8
diff changeset
642 if (found != 1)
08fb11004df9 Initial pass at OS9 module support for lwlink
lost@l-w.ca
parents: 8
diff changeset
643 {
08fb11004df9 Initial pass at OS9 module support for lwlink
lost@l-w.ca
parents: 8
diff changeset
644 rval = NULL;
149
729a9c70934e Fixed crash and bogus warning with os9 module target
lost@l-w.ca
parents: 148
diff changeset
645 if (found > 1)
729a9c70934e Fixed crash and bogus warning with os9 module target
lost@l-w.ca
parents: 148
diff changeset
646 fprintf(stderr, "Warning: multiple instances of section %s found; ignoring all of them which is probably not what you want\n", name);
148
08fb11004df9 Initial pass at OS9 module support for lwlink
lost@l-w.ca
parents: 8
diff changeset
647 }
08fb11004df9 Initial pass at OS9 module support for lwlink
lost@l-w.ca
parents: 8
diff changeset
648 return rval;
08fb11004df9 Initial pass at OS9 module support for lwlink
lost@l-w.ca
parents: 8
diff changeset
649 }
08fb11004df9 Initial pass at OS9 module support for lwlink
lost@l-w.ca
parents: 8
diff changeset
650
08fb11004df9 Initial pass at OS9 module support for lwlink
lost@l-w.ca
parents: 8
diff changeset
651 void check_os9(void)
08fb11004df9 Initial pass at OS9 module support for lwlink
lost@l-w.ca
parents: 8
diff changeset
652 {
08fb11004df9 Initial pass at OS9 module support for lwlink
lost@l-w.ca
parents: 8
diff changeset
653 section_t *s;
08fb11004df9 Initial pass at OS9 module support for lwlink
lost@l-w.ca
parents: 8
diff changeset
654 symtab_t *sym;
08fb11004df9 Initial pass at OS9 module support for lwlink
lost@l-w.ca
parents: 8
diff changeset
655
08fb11004df9 Initial pass at OS9 module support for lwlink
lost@l-w.ca
parents: 8
diff changeset
656 s = find_section_by_name_once("__os9");
08fb11004df9 Initial pass at OS9 module support for lwlink
lost@l-w.ca
parents: 8
diff changeset
657 linkscript.name = outfile;
08fb11004df9 Initial pass at OS9 module support for lwlink
lost@l-w.ca
parents: 8
diff changeset
658
08fb11004df9 Initial pass at OS9 module support for lwlink
lost@l-w.ca
parents: 8
diff changeset
659 if (!s)
08fb11004df9 Initial pass at OS9 module support for lwlink
lost@l-w.ca
parents: 8
diff changeset
660 {
08fb11004df9 Initial pass at OS9 module support for lwlink
lost@l-w.ca
parents: 8
diff changeset
661 // use defaults if not found
08fb11004df9 Initial pass at OS9 module support for lwlink
lost@l-w.ca
parents: 8
diff changeset
662 return;
08fb11004df9 Initial pass at OS9 module support for lwlink
lost@l-w.ca
parents: 8
diff changeset
663 }
08fb11004df9 Initial pass at OS9 module support for lwlink
lost@l-w.ca
parents: 8
diff changeset
664
08fb11004df9 Initial pass at OS9 module support for lwlink
lost@l-w.ca
parents: 8
diff changeset
665 // this section is special
08fb11004df9 Initial pass at OS9 module support for lwlink
lost@l-w.ca
parents: 8
diff changeset
666 // several symbols may be defined as LOCAL symbols:
08fb11004df9 Initial pass at OS9 module support for lwlink
lost@l-w.ca
parents: 8
diff changeset
667 // type: module type
08fb11004df9 Initial pass at OS9 module support for lwlink
lost@l-w.ca
parents: 8
diff changeset
668 // lang: module language
08fb11004df9 Initial pass at OS9 module support for lwlink
lost@l-w.ca
parents: 8
diff changeset
669 // attr: module attributes
08fb11004df9 Initial pass at OS9 module support for lwlink
lost@l-w.ca
parents: 8
diff changeset
670 // rev: module revision
08fb11004df9 Initial pass at OS9 module support for lwlink
lost@l-w.ca
parents: 8
diff changeset
671 //
08fb11004df9 Initial pass at OS9 module support for lwlink
lost@l-w.ca
parents: 8
diff changeset
672 // the symbols are not case sensitive
08fb11004df9 Initial pass at OS9 module support for lwlink
lost@l-w.ca
parents: 8
diff changeset
673 //
08fb11004df9 Initial pass at OS9 module support for lwlink
lost@l-w.ca
parents: 8
diff changeset
674 // any unrecognized symbols are ignored
08fb11004df9 Initial pass at OS9 module support for lwlink
lost@l-w.ca
parents: 8
diff changeset
675
08fb11004df9 Initial pass at OS9 module support for lwlink
lost@l-w.ca
parents: 8
diff changeset
676 // the contents of the actual data to the first NUL
08fb11004df9 Initial pass at OS9 module support for lwlink
lost@l-w.ca
parents: 8
diff changeset
677 // is assumed to be the module name unless it is an empty string
08fb11004df9 Initial pass at OS9 module support for lwlink
lost@l-w.ca
parents: 8
diff changeset
678 if (s -> codesize > 0 && (s -> flags & SECTION_BSS) == 0 && s -> code[0] != 0)
08fb11004df9 Initial pass at OS9 module support for lwlink
lost@l-w.ca
parents: 8
diff changeset
679 {
08fb11004df9 Initial pass at OS9 module support for lwlink
lost@l-w.ca
parents: 8
diff changeset
680 linkscript.name = (char *)(s -> code);
08fb11004df9 Initial pass at OS9 module support for lwlink
lost@l-w.ca
parents: 8
diff changeset
681 }
08fb11004df9 Initial pass at OS9 module support for lwlink
lost@l-w.ca
parents: 8
diff changeset
682
149
729a9c70934e Fixed crash and bogus warning with os9 module target
lost@l-w.ca
parents: 148
diff changeset
683 for (sym = s -> localsyms; sym; sym = sym -> next)
148
08fb11004df9 Initial pass at OS9 module support for lwlink
lost@l-w.ca
parents: 8
diff changeset
684 {
08fb11004df9 Initial pass at OS9 module support for lwlink
lost@l-w.ca
parents: 8
diff changeset
685 char *sm = (char *)(sym -> sym);
08fb11004df9 Initial pass at OS9 module support for lwlink
lost@l-w.ca
parents: 8
diff changeset
686 if (!strcasecmp(sm, "type"))
08fb11004df9 Initial pass at OS9 module support for lwlink
lost@l-w.ca
parents: 8
diff changeset
687 {
08fb11004df9 Initial pass at OS9 module support for lwlink
lost@l-w.ca
parents: 8
diff changeset
688 linkscript.modtype = sym -> offset;
08fb11004df9 Initial pass at OS9 module support for lwlink
lost@l-w.ca
parents: 8
diff changeset
689 }
08fb11004df9 Initial pass at OS9 module support for lwlink
lost@l-w.ca
parents: 8
diff changeset
690 else if (!strcasecmp(sm, "lang"))
08fb11004df9 Initial pass at OS9 module support for lwlink
lost@l-w.ca
parents: 8
diff changeset
691 {
08fb11004df9 Initial pass at OS9 module support for lwlink
lost@l-w.ca
parents: 8
diff changeset
692 linkscript.modlang = sym -> offset;
08fb11004df9 Initial pass at OS9 module support for lwlink
lost@l-w.ca
parents: 8
diff changeset
693 }
08fb11004df9 Initial pass at OS9 module support for lwlink
lost@l-w.ca
parents: 8
diff changeset
694 else if (!strcasecmp(sm, "attr"))
08fb11004df9 Initial pass at OS9 module support for lwlink
lost@l-w.ca
parents: 8
diff changeset
695 {
08fb11004df9 Initial pass at OS9 module support for lwlink
lost@l-w.ca
parents: 8
diff changeset
696 linkscript.modlang = sym -> offset;
08fb11004df9 Initial pass at OS9 module support for lwlink
lost@l-w.ca
parents: 8
diff changeset
697 }
08fb11004df9 Initial pass at OS9 module support for lwlink
lost@l-w.ca
parents: 8
diff changeset
698 else if (!strcasecmp(sm, "rev"))
08fb11004df9 Initial pass at OS9 module support for lwlink
lost@l-w.ca
parents: 8
diff changeset
699 {
08fb11004df9 Initial pass at OS9 module support for lwlink
lost@l-w.ca
parents: 8
diff changeset
700 linkscript.modrev = sym -> offset;
08fb11004df9 Initial pass at OS9 module support for lwlink
lost@l-w.ca
parents: 8
diff changeset
701 }
08fb11004df9 Initial pass at OS9 module support for lwlink
lost@l-w.ca
parents: 8
diff changeset
702 }
08fb11004df9 Initial pass at OS9 module support for lwlink
lost@l-w.ca
parents: 8
diff changeset
703 if (linkscript.modtype > 15)
08fb11004df9 Initial pass at OS9 module support for lwlink
lost@l-w.ca
parents: 8
diff changeset
704 linkscript.modtype = linkscript.modtype >> 4;
08fb11004df9 Initial pass at OS9 module support for lwlink
lost@l-w.ca
parents: 8
diff changeset
705
08fb11004df9 Initial pass at OS9 module support for lwlink
lost@l-w.ca
parents: 8
diff changeset
706 if (linkscript.modattr > 15)
08fb11004df9 Initial pass at OS9 module support for lwlink
lost@l-w.ca
parents: 8
diff changeset
707 linkscript.modattr = linkscript.modattr >> 4;
08fb11004df9 Initial pass at OS9 module support for lwlink
lost@l-w.ca
parents: 8
diff changeset
708
08fb11004df9 Initial pass at OS9 module support for lwlink
lost@l-w.ca
parents: 8
diff changeset
709 linkscript.modlang &= 15;
08fb11004df9 Initial pass at OS9 module support for lwlink
lost@l-w.ca
parents: 8
diff changeset
710 linkscript.modtype &= 15;
08fb11004df9 Initial pass at OS9 module support for lwlink
lost@l-w.ca
parents: 8
diff changeset
711 linkscript.modrev &= 15;
08fb11004df9 Initial pass at OS9 module support for lwlink
lost@l-w.ca
parents: 8
diff changeset
712 linkscript.modattr &= 15;
08fb11004df9 Initial pass at OS9 module support for lwlink
lost@l-w.ca
parents: 8
diff changeset
713 }