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annotate lwlink/map.c @ 156:fc8386b13399

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Added 'constant' sections to object file handling for lwasm and lwlink
author lost@l-w.ca
date Sun, 28 Aug 2011 02:06:42 -0600
parents fdc11ef4115b
children d389adbcc4ab
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
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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 #include <errno.h>
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25 #include <stdio.h>
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26 #include <stdlib.h>
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27 #include <string.h>
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28
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29 #include <lw_alloc.h>
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30
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31 #include "lwlink.h"
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32
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33 struct symliste
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34 {
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35 char *name;
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36 char *fn;
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37 int addr;
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38 int ext;
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39 struct symliste *next;
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40 };
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41
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42 void display_map(void)
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43 {
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44 FILE *of;
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45 int sn;
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46 int std = 0;
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47 struct symliste *slist = NULL;
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48 struct symliste *ce, *pe, *ne;
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49 symtab_t *sym;
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50 int i;
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51
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52 if (!strcmp(map_file, "-"))
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53 {
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54 std = 1;
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55 of = stdout;
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56 }
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57 else
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58 {
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59 of = fopen(map_file, "w");
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60 if (!of)
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61 {
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62 fprintf(stderr, "Cannot open map file - using stdout\n");
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63 std = 1;
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64 of = stdout;
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65 }
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66 }
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67
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68 // display section list
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69 for (sn = 0; sn < nsects; sn++)
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70 {
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71 fprintf(of, "Section: %s (%s) load at %04X, length %04X\n",
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72 sanitize_symbol((char*)(sectlist[sn].ptr -> name)),
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73 sectlist[sn].ptr -> file -> filename,
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74 sectlist[sn].ptr -> loadaddress,
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75 sectlist[sn].ptr -> codesize
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76 );
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77 }
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78
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79 // generate a sorted list of symbols and display it
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80 for (sn = 0; sn < nsects; sn++)
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81 {
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82 for (sym = sectlist[sn].ptr -> localsyms; sym; sym = sym -> next)
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83 {
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84 for (pe = NULL, ce = slist; ce; ce = ce -> next)
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85 {
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86 i = strcmp(ce -> name, (char *)(sym -> sym));
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87 if (i == 0)
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88 {
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89 i = strcmp(ce -> fn, sectlist[sn].ptr -> file -> filename);
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90 }
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91 if (i > 0)
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92 break;
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93 pe = ce;
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94 }
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95 ne = lw_alloc(sizeof(struct symliste));
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96 ne -> ext = 0;
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97 if (sectlist[sn].ptr -> flags & SECTION_CONST)
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98 ne -> addr = sym -> offset;
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99 else
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100 ne -> addr = sym -> offset + sectlist[sn].ptr -> loadaddress;
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101 ne -> next = ce;
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102 ne -> name = (char *)(sym -> sym);
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103 ne -> fn = sectlist[sn].ptr -> file -> filename;
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104 if (pe)
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105 pe -> next = ne;
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106 else
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107 slist = ne;
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108 }
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109 }
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110
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111 for (ce = slist; ce; ce = ce -> next)
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112 {
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113 fprintf(of, "Symbol: %s (%s) = %04X\n", sanitize_symbol(ce -> name), ce -> fn, ce -> addr);
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114 }
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115
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116 if (!std)
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117 fclose(of);
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118 }