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409
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1 /*
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2 symbol.c
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3
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4 Copyright © 2010 William Astle
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5
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6 This file is part of LWTOOLS.
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7
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8 LWTOOLS is free software: you can redistribute it and/or modify it under the
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9 terms of the GNU General Public License as published by the Free Software
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10 Foundation, either version 3 of the License, or (at your option) any later
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11 version.
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12
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13 This program is distributed in the hope that it will be useful, but WITHOUT
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14 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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15 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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16 more details.
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17
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18 You should have received a copy of the GNU General Public License along with
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19 this program. If not, see <http://www.gnu.org/licenses/>.
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20 */
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21
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22 #include <config.h>
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23
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24 #include <stdio.h>
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25
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26 #include <lw_alloc.h>
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27 #include <lw_string.h>
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28
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29 #include "lwdisasm.h"
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30
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31 symbol_t *find_symbol(disasmstate_t *as, int addr, int section)
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32 {
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33 symbol_t *s;
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34
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35 for (s = as -> symbols; s; s = s -> next)
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36 {
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37 if (s -> address == addr && s -> section == section)
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38 return s;
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39 }
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40 return NULL;
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41 }
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42
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43 symbol_t *register_symbol(disasmstate_t *as, int addr, int section, char *symbol)
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44 {
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45 char symbuf[200];
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46 symbol_t *s;
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47
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48 for (s = as -> symbols; s; s = s -> next)
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49 {
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50 if (s -> address == addr && s -> section == section)
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51 return s;
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52 }
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53
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54 if (!symbol)
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55 {
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56 if (section)
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57 {
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58 sprintf(symbuf, "L%d_%04X", section, addr);
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59 }
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60 else
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61 {
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62 sprintf(symbuf, "L%04X", addr);
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63 }
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64 symbol = symbuf;
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65 }
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66
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67 s = lw_alloc(sizeof(symbol_t));
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68 s -> symbol = lw_strdup(symbol);
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69 s -> address = addr;
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70 s -> section = section;
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71 s -> next = as -> symbols;
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72 as -> symbols = s;
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73 return s;
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74 }
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75
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76 void attach_symbols(disasmstate_t *as)
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77 {
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78 symbol_t *s;
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79 linedata_t *l;
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80
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81 for (s = as -> symbols; s; s = s -> next)
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82 {
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83 for (l = as -> lhead; l; l = l -> next)
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84 {
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85 if (l -> isref == 0 && l -> address == s -> address && l -> sectionref == s -> section)
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86 {
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87 l -> symbol = s;
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88 l -> isref = 1;
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89 break;
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90 }
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91 }
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92 }
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93 }
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