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annotate lwasm/symdump.c @ 543:e10618b48e68

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Implement support for dragon format binaries Implement support for dragon format binaries. As an added bonus, also implement a variation on raw binaries which guarantees the whole binary fits in the file. These are the "dragon" and "abs" output formats. Based on code submitted by Mike Miller.
author William Astle <lost@l-w.ca>
date Thu, 29 Sep 2022 13:59:42 -0600
parents 1c3220ed87a8
children
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1 /*
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2 symdump.c
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3
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4 Copyright © 2019 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 <stdio.h>
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23 #include <stdlib.h>
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24 #include <string.h>
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25
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26 #include <lw_alloc.h>
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27 #include <lw_expr.h>
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28 #include <lw_string.h>
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29
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30 #include "lwasm.h"
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31
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32 struct listinfo
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33 {
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34 sectiontab_t *sect;
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35 asmstate_t *as;
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36 int complex;
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37 };
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38
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39 int dump_symbols_test(lw_expr_t e, void *p)
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40 {
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41 struct listinfo *li = p;
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42
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43 if (li -> complex)
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44 return 0;
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45
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46 if (lw_expr_istype(e, lw_expr_type_special))
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47 {
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48 if (lw_expr_specint(e) == lwasm_expr_secbase)
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49 {
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50 if (li -> sect)
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51 {
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52 li -> complex = 1;
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53 }
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54 else
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55 {
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56 li -> sect = lw_expr_specptr(e);
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57 }
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58 }
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59 }
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60 return 0;
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61 }
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62
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63 void dump_symbols_aux(asmstate_t *as, FILE *of, struct symtabe *se)
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64 {
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65 struct symtabe *s;
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66 lw_expr_t te;
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67 struct listinfo li;
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68
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69 li.as = as;
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70
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71 if (!se)
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72 return;
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73
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74 dump_symbols_aux(as, of, se -> left);
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75
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76 for (s = se; s; s = s -> nextver)
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77 {
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78 if (s -> flags & symbol_flag_nolist)
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79 continue;
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80
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81 if (s -> context >= 0)
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82 continue;
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83
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84 lwasm_reduce_expr(as, s -> value);
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85
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86 fprintf(of, "%s ", s -> symbol);
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87 if (s -> flags & symbol_flag_set)
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88 fputs("SET", of);
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89 else
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90 fputs("EQU", of);
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91 te = lw_expr_copy(s -> value);
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92 li.complex = 0;
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93 li.sect = NULL;
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94 lw_expr_testterms(te, dump_symbols_test, &li);
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95 if (li.sect)
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96 {
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97 as -> exportcheck = 1;
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98 as -> csect = li.sect;
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99 lwasm_reduce_expr(as, te);
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100 as -> exportcheck = 0;
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101 }
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102
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103 if (lw_expr_istype(te, lw_expr_type_int))
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104 {
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105 fprintf(of, " $%04X\n", lw_expr_intval(te));
487
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106 }
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107 else
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108 {
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109 fprintf(of, " 0 ; <<incomplete>>\n");
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110 }
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111 lw_expr_destroy(te);
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112 }
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113
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114 dump_symbols_aux(as, of, se -> right);
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115 }
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116
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117 void do_symdump(asmstate_t *as)
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118 {
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119 FILE *of;
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120
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121 if (!(as -> flags & FLAG_SYMDUMP))
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122 {
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123 return;
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124 }
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125 else
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126 {
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127 if (as -> symbol_dump_file)
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128 {
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129 if (strcmp(as -> symbol_dump_file, "-") == 0)
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130 {
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131 of = stdout;
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132 }
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133 else
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134 of = fopen(as -> symbol_dump_file, "w");
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135 }
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136 else
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137 of = stdout;
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138
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139 if (!of)
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140 {
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141 fprintf(stderr, "Cannot open list file; list not generated\n");
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142 return;
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143 }
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144 }
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145 dump_symbols_aux(as, of, as -> symtab.head);
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146 }