|
29
|
1 /*
|
|
|
2 symtab.c
|
|
|
3
|
|
|
4 Copyright © 2011 William Astle
|
|
|
5
|
|
|
6 This file is part of LWTOOLS.
|
|
|
7
|
|
|
8 LWTOOLS is free software: you can redistribute it and/or modify it under the
|
|
|
9 terms of the GNU General Public License as published by the Free Software
|
|
|
10 Foundation, either version 3 of the License, or (at your option) any later
|
|
|
11 version.
|
|
|
12
|
|
|
13 This program is distributed in the hope that it will be useful, but WITHOUT
|
|
|
14 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
|
|
|
15 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
|
|
|
16 more details.
|
|
|
17
|
|
|
18 You should have received a copy of the GNU General Public License along with
|
|
|
19 this program. If not, see <http://www.gnu.org/licenses/>.
|
|
|
20 */
|
|
|
21
|
|
|
22 /*
|
|
|
23 Symbol table handling
|
|
|
24 */
|
|
|
25
|
|
|
26 #include <stdlib.h>
|
|
|
27 #include <string.h>
|
|
|
28
|
|
|
29 #include <lw_alloc.h>
|
|
|
30 #include <lw_string.h>
|
|
|
31
|
|
|
32 #define __symtab_c_seen__
|
|
|
33 #include "symtab.h"
|
|
|
34
|
|
|
35 symtab_t *symtab_init(void)
|
|
|
36 {
|
|
|
37 symtab_t *st;
|
|
|
38
|
|
|
39 st = lw_alloc(sizeof(symtab_t));
|
|
|
40 st -> head = NULL;
|
|
|
41 return st;
|
|
|
42 }
|
|
|
43
|
|
|
44 void symtab_destroy(symtab_t *st)
|
|
|
45 {
|
|
|
46 symtab_entry_t *se;
|
|
|
47
|
|
|
48 while (st -> head)
|
|
|
49 {
|
|
|
50 se = st -> head;
|
|
|
51 st -> head = se -> next;
|
|
|
52 lw_free(se -> name);
|
|
|
53 lw_free(se);
|
|
|
54 }
|
|
|
55 lw_free(st);
|
|
|
56 }
|
|
|
57
|
|
|
58 symtab_entry_t *symtab_find(symtab_t *st, char *name)
|
|
|
59 {
|
|
|
60 symtab_entry_t *se;
|
|
|
61
|
|
|
62 for (se = st -> head; se; se = se -> next)
|
|
|
63 {
|
|
|
64 if (strcmp(se -> name, name) == 0)
|
|
|
65 return se;
|
|
|
66 }
|
|
|
67 return NULL;
|
|
|
68 }
|
|
|
69
|
|
|
70 void symtab_register(symtab_t *st, char *name, int addr, int symtype)
|
|
|
71 {
|
|
|
72 symtab_entry_t *se;
|
|
|
73
|
|
|
74 se = lw_alloc(sizeof(symtab_entry_t));
|
|
|
75 se -> name = lw_strdup(name);
|
|
|
76 se -> addr = addr;
|
|
|
77 se -> symtype = symtype;
|
|
|
78 se -> next = st -> head;
|
|
|
79 st -> head = se;
|
|
|
80 }
|
