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annotate lwbasic/attic/symtab.c @ 235:e3741cf53e00
Fix error messages related to undefined symbols in lwlink
Make lwlink not complain about seciton base and length symbols. Also silence
duplicate complaints about undefined symbols. There is no need to complain
about undefined symbols during the file/section resolution stage! If they
are truly undefined, they'll still be undefined at the reference resolution
stage.
| author | William Astle <lost@l-w.ca> |
|---|---|
| date | Sat, 11 Aug 2012 15:18:58 -0600 |
| parents | cca933d32298 |
| children |
| rev | line source |
|---|---|
| 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); | |
|
32
49d608aecc4d
Framework for handling local stack frame and/or variables
lost@l-w.ca
parents:
29
diff
changeset
|
53 lw_free(se -> privdata); |
| 29 | 54 lw_free(se); |
| 55 } | |
| 56 lw_free(st); | |
| 57 } | |
| 58 | |
| 59 symtab_entry_t *symtab_find(symtab_t *st, char *name) | |
| 60 { | |
| 61 symtab_entry_t *se; | |
| 62 | |
| 63 for (se = st -> head; se; se = se -> next) | |
| 64 { | |
| 65 if (strcmp(se -> name, name) == 0) | |
| 66 return se; | |
| 67 } | |
| 68 return NULL; | |
| 69 } | |
| 70 | |
|
32
49d608aecc4d
Framework for handling local stack frame and/or variables
lost@l-w.ca
parents:
29
diff
changeset
|
71 void symtab_register(symtab_t *st, char *name, int addr, int symtype, void *privdata) |
| 29 | 72 { |
| 73 symtab_entry_t *se; | |
| 74 | |
| 75 se = lw_alloc(sizeof(symtab_entry_t)); | |
| 76 se -> name = lw_strdup(name); | |
| 77 se -> addr = addr; | |
| 78 se -> symtype = symtype; | |
|
32
49d608aecc4d
Framework for handling local stack frame and/or variables
lost@l-w.ca
parents:
29
diff
changeset
|
79 se -> privdata = privdata; |
| 29 | 80 se -> next = st -> head; |
| 81 st -> head = se; | |
| 82 } |