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comparison lwlink/map.c @ 185:b89adfb0d174

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Added support for outputting a linkmap
author lost
date Sat, 21 Mar 2009 19:47:45 +0000
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children bae1e3ecdce1
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184:220a760ec654 185:b89adfb0d174
1 /*
2 map.c
3 Copyright © 2009 William Astle
4
5 This file is part of LWLINK.
6
7 LWLINK is free software: you can redistribute it and/or modify it under the
8 terms of the GNU General Public License as published by the Free Software
9 Foundation, either version 3 of the License, or (at your option) any later
10 version.
11
12 This program is distributed in the hope that it will be useful, but WITHOUT
13 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
14 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
15 more details.
16
17 You should have received a copy of the GNU General Public License along with
18 this program. If not, see <http://www.gnu.org/licenses/>.
19
20
21 Output information about the linking process
22 */
23
24 #ifdef HAVE_CONFIG_H
25 #include "config.h"
26 #endif
27
28 #include <errno.h>
29 #include <stdio.h>
30 #include <stdlib.h>
31
32 #include "lwlink.h"
33 #include "util.h"
34
35 struct symliste
36 {
37 char *name;
38 char *fn;
39 int addr;
40 int ext;
41 struct symliste *next;
42 };
43
44 void display_map(void)
45 {
46 FILE *of;
47 int sn;
48 int std = 0;
49 struct symliste *slist = NULL;
50 struct symliste *ce, *pe, *ne;
51 symtab_t *sym;
52 int i;
53
54 if (!strcmp(map_file, "-"))
55 {
56 std = 1;
57 of = stdout;
58 }
59 else
60 {
61 of = fopen(map_file, "w");
62 if (!of)
63 {
64 fprintf(stderr, "Cannot open map file - using stdout\n");
65 std = 1;
66 of = stdout;
67 }
68 }
69
70 // display section list
71 for (sn = 0; sn < nsects; sn++)
72 {
73 fprintf(of, "Section: %s (%s) load at %04X, length %04X\n",
74 sectlist[sn].ptr -> name,
75 sectlist[sn].ptr -> file -> filename,
76 sectlist[sn].ptr -> loadaddress,
77 sectlist[sn].ptr -> codesize
78 );
79 }
80
81 // generate a sorted list of symbols and display it
82 for (sn = 0; sn < nsects; sn++)
83 {
84 for (sym = sectlist[sn].ptr -> localsyms; sym; sym = sym -> next)
85 {
86 for (pe = NULL, ce = slist; ce; ce = ce -> next)
87 {
88 i = strcmp(ce -> name, sym -> sym);
89 if (i == 0)
90 {
91 i = strcmp(ce -> fn, sectlist[sn].ptr -> file -> filename);
92 }
93 if (i > 0)
94 break;
95 pe = ce;
96 }
97 ne = lw_malloc(sizeof(struct symliste));
98 ne -> ext = 0;
99 ne -> addr = sym -> offset + sectlist[sn].ptr -> loadaddress;
100 ne -> next = ce;
101 ne -> name = sym -> sym;
102 ne -> fn = sectlist[sn].ptr -> file -> filename;
103 if (pe)
104 pe -> next = ne;
105 else
106 slist = ne;
107 }
108 }
109
110 for (ce = slist; ce; ce = ce -> next)
111 {
112 fprintf(of, "Symbol: %s (%s) = %04X\n", ce -> name, ce -> fn, ce -> addr);
113 }
114
115 if (!std)
116 fclose(of);
117 }