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185
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1 /*
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2 map.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 Output information about the linking process
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22 */
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23
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24 #ifdef HAVE_CONFIG_H
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25 #include "config.h"
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26 #endif
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27
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28 #include <errno.h>
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29 #include <stdio.h>
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30 #include <stdlib.h>
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31
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32 #include "lwlink.h"
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33 #include "util.h"
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34
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35 struct symliste
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36 {
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37 char *name;
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38 char *fn;
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39 int addr;
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40 int ext;
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41 struct symliste *next;
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42 };
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43
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44 void display_map(void)
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45 {
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46 FILE *of;
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47 int sn;
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48 int std = 0;
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49 struct symliste *slist = NULL;
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50 struct symliste *ce, *pe, *ne;
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51 symtab_t *sym;
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52 int i;
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53
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54 if (!strcmp(map_file, "-"))
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55 {
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56 std = 1;
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57 of = stdout;
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58 }
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59 else
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60 {
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61 of = fopen(map_file, "w");
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62 if (!of)
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63 {
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64 fprintf(stderr, "Cannot open map file - using stdout\n");
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65 std = 1;
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66 of = stdout;
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67 }
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68 }
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69
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70 // display section list
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71 for (sn = 0; sn < nsects; sn++)
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72 {
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73 fprintf(of, "Section: %s (%s) load at %04X, length %04X\n",
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74 sectlist[sn].ptr -> name,
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75 sectlist[sn].ptr -> file -> filename,
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76 sectlist[sn].ptr -> loadaddress,
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77 sectlist[sn].ptr -> codesize
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78 );
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79 }
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80
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81 // generate a sorted list of symbols and display it
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82 for (sn = 0; sn < nsects; sn++)
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83 {
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84 for (sym = sectlist[sn].ptr -> localsyms; sym; sym = sym -> next)
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85 {
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86 for (pe = NULL, ce = slist; ce; ce = ce -> next)
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87 {
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88 i = strcmp(ce -> name, sym -> sym);
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89 if (i == 0)
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90 {
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91 i = strcmp(ce -> fn, sectlist[sn].ptr -> file -> filename);
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92 }
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93 if (i > 0)
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94 break;
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95 pe = ce;
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96 }
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97 ne = lw_malloc(sizeof(struct symliste));
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98 ne -> ext = 0;
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99 ne -> addr = sym -> offset + sectlist[sn].ptr -> loadaddress;
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100 ne -> next = ce;
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101 ne -> name = sym -> sym;
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102 ne -> fn = sectlist[sn].ptr -> file -> filename;
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103 if (pe)
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104 pe -> next = ne;
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105 else
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106 slist = ne;
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107 }
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108 }
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109
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110 for (ce = slist; ce; ce = ce -> next)
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111 {
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112 fprintf(of, "Symbol: %s (%s) = %04X\n", ce -> name, ce -> fn, ce -> addr);
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113 }
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114
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115 if (!std)
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116 fclose(of);
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117 }
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