FreeCalypso > hg > freecalypso-reveng
annotate leo-obj/tool/tables.c @ 197:cf3b4cb3d212
bootrom.notes typo fix (courtesy of pfalcon <pmiscml@gmail.com>)
author | Michael Spacefalcon <falcon@ivan.Harhan.ORG> |
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date | Thu, 16 Apr 2015 04:12:48 +0000 |
parents | fd772de226cb |
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1 /* |
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2 * This C module will contain functions for the initial parsing |
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3 * of the section and symbol tables. |
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4 */ |
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5 |
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6 #include <sys/types.h> |
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7 #include <stdio.h> |
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8 #include <stdlib.h> |
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9 #include <string.h> |
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10 #include <strings.h> |
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11 #include "filestruct.h" |
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12 #include "intstruct.h" |
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13 #include "globals.h" |
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14 |
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15 extern unsigned get_u16(), get_u32(); |
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16 |
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17 static char * |
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18 get_secorsym_name(ptr) |
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19 u_char *ptr; |
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20 { |
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21 char *alloc; |
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22 |
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23 if (ptr[0]) { |
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24 if (ptr[7]) { |
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25 alloc = malloc(9); |
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26 if (!alloc) { |
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27 perror("malloc"); |
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28 exit(1); |
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29 } |
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30 bcopy(ptr, alloc, 8); |
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31 alloc[8] = '\0'; |
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32 return(alloc); |
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33 } else |
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34 return((char *) ptr); |
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35 } |
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36 if (ptr[1] || ptr[2] || ptr[3]) { |
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37 fprintf(stderr, "error: malformed name in %s at offset 0x%x\n", |
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38 objfilename, ptr - filemap); |
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39 exit(1); |
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40 } |
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41 return(filemap + strtab_offset + get_u32(ptr+4)); |
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42 } |
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43 |
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44 get_int_section_table() |
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45 { |
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46 unsigned n; |
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47 |
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48 sections = malloc(sizeof(struct internal_scnhdr) * nsections); |
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49 if (!sections) { |
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50 perror("malloc"); |
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51 exit(1); |
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52 } |
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53 for (n = 0; n < nsections; n++) { |
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54 sections[n].name = get_secorsym_name(sections_raw[n].s_name); |
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55 if (get_u32(sections_raw[n].s_paddr)) |
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56 fprintf(stderr, |
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57 "warning: section #%u (%s) has nonzero paddr\n", |
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58 n, sections[n].name); |
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59 if (get_u32(sections_raw[n].s_vaddr)) |
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60 fprintf(stderr, |
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61 "warning: section #%u (%s) has nonzero vaddr\n", |
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62 n, sections[n].name); |
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63 sections[n].size = get_u32(sections_raw[n].s_size); |
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64 sections[n].data_offset = get_u32(sections_raw[n].s_scnptr); |
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65 sections[n].reloc_offset = get_u32(sections_raw[n].s_relptr); |
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66 sections[n].line_offset = get_u32(sections_raw[n].s_lnnoptr); |
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67 sections[n].nreloc = get_u32(sections_raw[n].s_nreloc); |
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68 sections[n].nlineent = get_u32(sections_raw[n].s_nlnno); |
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69 sections[n].flags = get_u32(sections_raw[n].s_flags); |
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70 if (get_u16(sections_raw[n].s_reserved)) |
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71 fprintf(stderr, |
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72 "warning: section #%u (%s): some nonzero value in s_reserved bytes\n", |
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73 n, sections[n].name); |
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74 if (get_u16(sections_raw[n].s_page)) |
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75 fprintf(stderr, |
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76 "warning: section #%u (%s): some nonzero value in s_page bytes\n", |
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77 n, sections[n].name); |
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78 sections[n].nsymbols = 0; |
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79 sections[n].sorted_symbols = 0; |
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80 sections[n].int_relocs = 0; |
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81 if (!strncmp(sections[n].name, ".text", 5)) |
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82 sections[n].disasm_mode = DISASM_MODE_CODE; |
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83 else if (!strcmp(sections[n].name, ".const")) |
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84 sections[n].disasm_mode = DISASM_MODE_DATA; |
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85 else if (!strcmp(sections[n].name, ".cinit")) |
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86 sections[n].disasm_mode = DISASM_MODE_DATA; |
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87 else if (!strcmp(sections[n].name, ".data")) |
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88 sections[n].disasm_mode = DISASM_MODE_DATA; |
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89 else if (!strcmp(sections[n].name, ".bss")) |
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90 sections[n].disasm_mode = DISASM_MODE_BSS; |
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91 else |
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92 sections[n].disasm_mode = DISASM_MODE_UNKNOWN; |
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93 sections[n].hints = 0; |
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94 } |
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95 } |
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96 |
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97 get_int_symbol_table() |
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98 { |
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99 unsigned n; |
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100 struct internal_syment *in; |
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101 |
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102 symtab = malloc(sizeof(struct internal_syment *) * nsymtab); |
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103 if (!symtab) { |
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104 perror("malloc"); |
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105 exit(1); |
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106 } |
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107 for (n = 0; n < nsymtab; ) { |
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108 in = malloc(sizeof(struct internal_syment)); |
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109 if (!in) { |
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110 perror("malloc"); |
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111 exit(1); |
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112 } |
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113 symtab[n] = in; |
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114 in->number = n; |
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115 in->name = get_secorsym_name(symtab_raw[n].e_name); |
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116 in->value = get_u32(symtab_raw[n].e_value); |
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117 in->scnum = get_s16(symtab_raw[n].e_scnum); |
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118 if (in->scnum > 0) { |
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119 if (in->scnum > nsections) { |
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120 fprintf(stderr, |
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121 "symtab entry #%u: scnum too big\n", n); |
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122 exit(1); |
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123 } |
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124 in->section = sections + in->scnum - 1; |
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125 in->section->nsymbols++; |
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126 } else if (in->scnum < -2) { |
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127 fprintf(stderr, |
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128 "symtab entry #%u: scnum < -2\n", n); |
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129 exit(1); |
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130 } else |
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131 in->section = 0; |
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132 in->type = get_u16(symtab_raw[n].e_type); |
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133 in->class = symtab_raw[n].e_sclass; |
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134 in->struct_name = 0; |
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135 in->struct_name_raw = 0; |
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136 switch (symtab_raw[n++].e_numaux) { |
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137 case 0: |
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138 in->aux = 0; |
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139 continue; |
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140 case 1: |
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141 if (n >= nsymtab) { |
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142 fprintf(stderr, |
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143 "error: last symbol's aux spills over\n"); |
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144 exit(1); |
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145 } |
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146 symtab[n] = 0; |
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147 in->aux = (u_char *)(symtab_raw + n); |
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148 n++; |
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149 continue; |
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150 default: |
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151 n--; |
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152 fprintf(stderr, "symtab entry #%u: invalid numaux\n", |
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153 n); |
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154 exit(1); |
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155 } |
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156 } |
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157 } |