annotate lwlink/map.c @ 258:ebda5c96665e

Improved stack handling for os9 target in lwlink Added "stack" as a valid symbol in the __os9 section. All instances of __os9 are now polled for "stack" symobls and the values added to the stack size set in the linker script. The stack size is then added to the final data size of the module. Also set a default minimum stack size of 32 bytes.
author William Astle <lost@l-w.ca>
date Thu, 31 Jan 2013 19:34:54 -0700
parents d389adbcc4ab
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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0
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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 symlist_t *se;
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52
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53 if (!strcmp(map_file, "-"))
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54 {
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55 std = 1;
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56 of = stdout;
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57 }
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58 else
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59 {
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60 of = fopen(map_file, "w");
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61 if (!of)
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62 {
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63 fprintf(stderr, "Cannot open map file - using stdout\n");
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64 std = 1;
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65 of = stdout;
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66 }
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67 }
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68
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69 // display section list
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70 for (sn = 0; sn < nsects; sn++)
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71 {
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72 fprintf(of, "Section: %s (%s) load at %04X, length %04X\n",
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73 sanitize_symbol((char*)(sectlist[sn].ptr -> name)),
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74 sectlist[sn].ptr -> file -> filename,
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75 sectlist[sn].ptr -> loadaddress,
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76 sectlist[sn].ptr -> codesize
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77 );
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78 }
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79
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80 // generate a sorted list of symbols and display it
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81
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82 for (se = symlist; se; se = se -> 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, se -> sym);
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87 if (i > 0)
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88 {
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89 break;
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90 }
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91 pe = ce;
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92 }
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93
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94 ne = lw_alloc(sizeof(struct symliste));
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95 ne -> ext = 1;
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96 ne -> addr = se -> val;
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97 ne -> next = ce;
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98 ne -> name = se -> sym;
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99 ne -> fn = "<synthetic>";
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100 if (pe)
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101 pe -> next = ne;
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102 else
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103 slist = ne;
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104 }
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105
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106 for (sn = 0; sn < nsects; sn++)
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107 {
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108 for (sym = sectlist[sn].ptr -> localsyms; sym; sym = sym -> next)
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109 {
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110 for (pe = NULL, ce = slist; ce; ce = ce -> next)
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111 {
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112 i = strcmp(ce -> name, (char *)(sym -> sym));
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113 if (i == 0)
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114 {
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115 i = strcmp(ce -> fn, sectlist[sn].ptr -> file -> filename);
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116 }
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117 if (i > 0)
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118 break;
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119 pe = ce;
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120 }
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121 ne = lw_alloc(sizeof(struct symliste));
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122 ne -> ext = 0;
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123 if (sectlist[sn].ptr -> flags & SECTION_CONST)
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124 ne -> addr = sym -> offset;
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125 else
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126 ne -> addr = sym -> offset + sectlist[sn].ptr -> loadaddress;
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127 ne -> next = ce;
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128 ne -> name = (char *)(sym -> sym);
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129 ne -> fn = sectlist[sn].ptr -> file -> filename;
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130 if (pe)
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131 pe -> next = ne;
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132 else
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133 slist = ne;
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134 }
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135 }
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136
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137 for (ce = slist; ce; ce = ce -> next)
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138 {
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139 fprintf(of, "Symbol: %s (%s) = %04X\n", sanitize_symbol(ce -> name), ce -> fn, ce -> addr);
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140 }
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
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141
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff changeset
142 if (!std)
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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143 fclose(of);
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
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144 }