FreeCalypso > hg > freecalypso-reveng
annotate ticoff/disasm.c @ 125:b8ac21536779
tiobjd disasm: bss handling
author | Michael Spacefalcon <msokolov@ivan.Harhan.ORG> |
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date | Fri, 04 Apr 2014 18:56:23 +0000 |
parents | 700d77d5cf00 |
children | 03f8a618689e |
rev | line source |
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1 /* |
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2 * Putting it all together: section-, symbol- and reloc-aware disassembly |
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3 */ |
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4 |
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5 #include <sys/types.h> |
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6 #include <stdio.h> |
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7 #include <stdlib.h> |
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8 #include <string.h> |
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9 #include <strings.h> |
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10 #include "intstruct.h" |
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11 #include "coffconst.h" |
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12 #include "globals.h" |
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13 |
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14 extern unsigned get_u16(), get_u32(); |
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15 extern char *storage_class_to_string(); |
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16 |
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17 static void |
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18 find_better_symbol(sec, symp, addp) |
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19 struct internal_scnhdr *sec; |
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20 struct internal_syment **symp; |
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21 unsigned *addp; |
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22 { |
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23 unsigned addr, delta; |
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24 struct internal_syment *sym; |
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25 unsigned n; |
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26 |
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27 addr = *addp; |
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28 for (n = 0; n < sec->nsymbols; n++) { |
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29 sym = sec->sorted_symbols[n]; |
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30 if (sym->value > addr) |
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31 return; |
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32 if (sym->class != C_EXT && sym->class != C_STAT) |
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33 continue; |
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34 delta = addr - sym->value; |
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35 if (sym->name[0] == '_' && !delta || |
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36 sym->name[0] == '$' && delta <= 1) { |
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37 *symp = sym; |
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38 *addp = delta; |
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39 } |
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40 } |
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41 } |
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42 |
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43 void |
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44 disasm_reloc_target(sec, rel, addend) |
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45 struct internal_scnhdr *sec; |
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46 struct internal_reloc *rel; |
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47 unsigned addend; |
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48 { |
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49 struct internal_syment *sym = rel->sym; |
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50 |
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51 if (sym) |
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52 addend -= sym->value; |
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53 if (!sym || sym->section && !strcmp(sym->name, sym->section->name)) |
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54 find_better_symbol(sym ? sym->section : sec, &sym, &addend); |
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55 if (sym) |
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56 fputs(sym->name, stdout); |
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57 else |
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58 fputs(sec->name, stdout); |
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59 if (addend >= 10) |
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60 printf("+0x%x", addend); |
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61 else if (addend) |
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62 printf("+%u", addend); |
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63 } |
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64 |
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65 void |
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66 disasm_word32_reloc(sec, rel) |
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67 struct internal_scnhdr *sec; |
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68 struct internal_reloc *rel; |
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69 { |
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70 unsigned word; |
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71 |
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72 word = get_u32(filemap + sec->data_offset + rel->location); |
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73 printf("%08x R\t.word\t", word); |
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74 disasm_reloc_target(sec, rel, word); |
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75 putchar('\n'); |
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76 } |
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77 |
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78 void |
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79 disasm_end_of_section(sec, symnum) |
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80 struct internal_scnhdr *sec; |
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81 unsigned symnum; |
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82 { |
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83 struct internal_syment *sym; |
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84 char *sym_comment; |
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85 |
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86 putchar('\n'); |
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87 while (symnum < sec->nsymbols) { |
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88 sym = sec->sorted_symbols[symnum]; |
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89 if (sym->value != sec->size) { |
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90 printf("error: expecting symbol at end of section\n"); |
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91 return; |
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92 } |
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93 switch (sym->class) { |
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94 case C_EXT: |
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95 sym_comment = "Global"; |
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96 break; |
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97 case C_STAT: |
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98 sym_comment = "static"; |
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99 break; |
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100 case C_LABEL: |
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101 sym_comment = "label"; |
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102 break; |
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103 default: |
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104 sym_comment = "unexpected class!"; |
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105 } |
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106 printf("%s:\t; %s\n", sym->name, sym_comment); |
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107 symnum++; |
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108 } |
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109 printf("%8x:\t<end of section>\n", sec->size); |
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110 } |
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111 |
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112 void |
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113 disasm_text_section(sec) |
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114 struct internal_scnhdr *sec; |
0f94d17899b3
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
115 { |
0f94d17899b3
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
116 unsigned symnum, relnum; |
0f94d17899b3
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
117 unsigned pos, incr, headroom; |
0f94d17899b3
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
118 int state = -1, linebrk = 0; |
0f94d17899b3
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
119 struct internal_syment *sym; |
0f94d17899b3
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
120 struct internal_reloc *rel; |
0f94d17899b3
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
121 char *sym_comment; |
0f94d17899b3
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
122 |
0f94d17899b3
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
123 printf("Disassembling code section:\n"); |
0f94d17899b3
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
124 if (sec->nsymbols) |
0f94d17899b3
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
125 sort_symbols_of_sec(sec); |
0f94d17899b3
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
126 if (sec->nreloc) |
0f94d17899b3
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
127 get_relocs_of_sec(sec); |
0f94d17899b3
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
128 symnum = relnum = 0; |
0f94d17899b3
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
129 for (pos = 0; pos < sec->size; pos += incr) { |
0f94d17899b3
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
130 headroom = sec->size - pos; |
0f94d17899b3
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
131 while (symnum < sec->nsymbols) { |
0f94d17899b3
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
132 sym = sec->sorted_symbols[symnum]; |
0f94d17899b3
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
133 if (sym->value > pos) { |
0f94d17899b3
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
134 if (sym->value - pos < headroom) |
0f94d17899b3
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
135 headroom = sym->value - pos; |
0f94d17899b3
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
136 break; |
0f94d17899b3
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
137 } |
0f94d17899b3
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
138 /* hit symbol */ |
0f94d17899b3
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
139 if (!linebrk) { |
0f94d17899b3
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
140 putchar('\n'); |
0f94d17899b3
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
141 linebrk = 1; |
0f94d17899b3
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
142 } |
0f94d17899b3
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
143 switch (sym->class) { |
0f94d17899b3
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
144 case C_EXT: |
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
145 sym_comment = "Global"; |
0f94d17899b3
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
146 break; |
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
147 case C_STAT: |
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
148 sym_comment = "static"; |
0f94d17899b3
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
149 break; |
0f94d17899b3
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
150 case C_LABEL: |
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
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|
151 sym_comment = "label"; |
0f94d17899b3
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
152 if (!strcmp(sym->name, "$CODE16")) |
0f94d17899b3
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
153 state = 1; |
0f94d17899b3
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
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|
154 else if (!strcmp(sym->name, "$CODE32")) |
0f94d17899b3
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
155 state = 0; |
0f94d17899b3
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
156 break; |
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
157 default: |
0f94d17899b3
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
158 sym_comment = "unexpected class!"; |
0f94d17899b3
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
159 } |
0f94d17899b3
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
160 printf("%s:\t; %s\n", sym->name, sym_comment); |
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
161 symnum++; |
0f94d17899b3
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
162 } |
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
163 if (relnum < sec->nreloc) { |
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
164 rel = sec->int_relocs + relnum; |
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
165 if (rel->location == pos) |
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
166 relnum++; /* it's ours */ |
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
167 else { |
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
168 if (rel->location - pos < headroom) |
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
169 headroom = rel->location - pos; |
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
170 rel = 0; /* no reloc for current pos */ |
0f94d17899b3
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
171 } |
0f94d17899b3
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
172 } else |
0f94d17899b3
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
173 rel = 0; |
0f94d17899b3
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
174 printf("%8x:\t", pos); |
112
61a58677dc68
tiobjd disasm: beginning of reloc handling
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
111
diff
changeset
|
175 if (rel && rel->type == RTYPE_LONG) { |
61a58677dc68
tiobjd disasm: beginning of reloc handling
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
111
diff
changeset
|
176 if (pos & 3) { |
61a58677dc68
tiobjd disasm: beginning of reloc handling
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
111
diff
changeset
|
177 printf("MISALIGNED pos for word32 reloc, aborting\n"); |
61a58677dc68
tiobjd disasm: beginning of reloc handling
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
111
diff
changeset
|
178 return; |
61a58677dc68
tiobjd disasm: beginning of reloc handling
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
111
diff
changeset
|
179 } |
61a58677dc68
tiobjd disasm: beginning of reloc handling
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
111
diff
changeset
|
180 disasm_word32_reloc(sec, rel); |
61a58677dc68
tiobjd disasm: beginning of reloc handling
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
111
diff
changeset
|
181 incr = 4; |
61a58677dc68
tiobjd disasm: beginning of reloc handling
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
111
diff
changeset
|
182 goto next; |
61a58677dc68
tiobjd disasm: beginning of reloc handling
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
111
diff
changeset
|
183 } |
123
5f9cc99930a8
tiobjd: handling of $CODE16 symbols at byte positions
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
121
diff
changeset
|
184 if (pos & 1 || headroom < 2) { |
5f9cc99930a8
tiobjd: handling of $CODE16 symbols at byte positions
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
121
diff
changeset
|
185 if (rel) { |
5f9cc99930a8
tiobjd: handling of $CODE16 symbols at byte positions
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
121
diff
changeset
|
186 printf("error: reloc at byte pos, aborting\n"); |
5f9cc99930a8
tiobjd: handling of $CODE16 symbols at byte positions
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
121
diff
changeset
|
187 return; |
5f9cc99930a8
tiobjd: handling of $CODE16 symbols at byte positions
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
121
diff
changeset
|
188 } |
5f9cc99930a8
tiobjd: handling of $CODE16 symbols at byte positions
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
121
diff
changeset
|
189 printf("%02x\n", filemap[sec->data_offset + pos]); |
5f9cc99930a8
tiobjd: handling of $CODE16 symbols at byte positions
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
121
diff
changeset
|
190 incr = 1; |
5f9cc99930a8
tiobjd: handling of $CODE16 symbols at byte positions
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
121
diff
changeset
|
191 goto next; |
5f9cc99930a8
tiobjd: handling of $CODE16 symbols at byte positions
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
121
diff
changeset
|
192 } |
111
0f94d17899b3
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
193 switch (state) { |
0f94d17899b3
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
194 case 0: /* ARM */ |
0f94d17899b3
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
195 if (pos & 3) { |
0f94d17899b3
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
196 printf("MISALIGNED pos in CODE32 state, aborting\n"); |
0f94d17899b3
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
197 return; |
0f94d17899b3
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
198 } |
114
ca8e43288836
tiobjd: ARM_B reloc handling
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
112
diff
changeset
|
199 if (rel) { |
ca8e43288836
tiobjd: ARM_B reloc handling
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
112
diff
changeset
|
200 if (rel->type != RTYPE_ARM_B) { |
ca8e43288836
tiobjd: ARM_B reloc handling
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
112
diff
changeset
|
201 printf("Wrong reloc type in CODE32 state, aborting\n"); |
ca8e43288836
tiobjd: ARM_B reloc handling
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
112
diff
changeset
|
202 return; |
ca8e43288836
tiobjd: ARM_B reloc handling
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
112
diff
changeset
|
203 } |
ca8e43288836
tiobjd: ARM_B reloc handling
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
112
diff
changeset
|
204 arm_branch_reloc(sec, rel); |
ca8e43288836
tiobjd: ARM_B reloc handling
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
112
diff
changeset
|
205 } else |
ca8e43288836
tiobjd: ARM_B reloc handling
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
112
diff
changeset
|
206 arm_disasm_line(sec, pos); |
111
0f94d17899b3
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
207 incr = 4; |
0f94d17899b3
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
208 break; |
0f94d17899b3
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
209 case 1: /* Thumb */ |
0f94d17899b3
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
210 if (pos & 1) { |
0f94d17899b3
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
211 printf("MISALIGNED pos in CODE16 state, aborting\n"); |
0f94d17899b3
tiobjd: disassembly integrated, no relocs or hints yet
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
212 return; |
0f94d17899b3
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
213 } |
117
f9fde7f36ae3
tiobjd: Thumb_BL reloc handling
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
114
diff
changeset
|
214 if (rel) { |
f9fde7f36ae3
tiobjd: Thumb_BL reloc handling
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
114
diff
changeset
|
215 if (rel->type != RTYPE_THUMB_BL) { |
f9fde7f36ae3
tiobjd: Thumb_BL reloc handling
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
114
diff
changeset
|
216 printf("Wrong reloc type in CODE16 state, aborting\n"); |
f9fde7f36ae3
tiobjd: Thumb_BL reloc handling
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
114
diff
changeset
|
217 return; |
f9fde7f36ae3
tiobjd: Thumb_BL reloc handling
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
114
diff
changeset
|
218 } |
f9fde7f36ae3
tiobjd: Thumb_BL reloc handling
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
114
diff
changeset
|
219 thumb_bl_reloc(sec, rel); |
f9fde7f36ae3
tiobjd: Thumb_BL reloc handling
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
114
diff
changeset
|
220 incr = 4; |
f9fde7f36ae3
tiobjd: Thumb_BL reloc handling
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
114
diff
changeset
|
221 } else if (headroom >= 4 && thumb_check_bl(sec, pos)) |
111
0f94d17899b3
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
222 incr = 4; |
0f94d17899b3
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
223 else { |
0f94d17899b3
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
224 thumb_disasm_line(sec, pos); |
0f94d17899b3
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
225 incr = 2; |
0f94d17899b3
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
226 } |
0f94d17899b3
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
227 break; |
0f94d17899b3
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
228 default: |
0f94d17899b3
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
229 printf("UNKNOWN T state, aborting\n"); |
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230 return; |
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231 } |
112
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232 next: linebrk = 0; |
111
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233 if (incr > headroom) { |
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234 printf("error: increment %u > headroom %u, aborting\n", |
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|
235 incr, headroom); |
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236 return; |
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237 } |
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238 } |
124
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239 if (symnum < sec->nsymbols) |
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240 disasm_end_of_section(sec, symnum); |
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241 } |
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242 |
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243 void |
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244 disasm_data_section(sec) |
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245 struct internal_scnhdr *sec; |
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246 { |
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247 unsigned symnum, relnum; |
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248 unsigned pos, incr, headroom; |
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249 int linebrk = 0; |
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250 struct internal_syment *sym; |
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251 struct internal_reloc *rel; |
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252 char *sym_comment; |
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253 |
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254 printf("Disassembling data section:\n"); |
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255 if (sec->nsymbols) |
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256 sort_symbols_of_sec(sec); |
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257 if (sec->nreloc) |
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258 get_relocs_of_sec(sec); |
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259 symnum = relnum = 0; |
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260 for (pos = 0; pos < sec->size; pos += incr) { |
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261 headroom = sec->size - pos; |
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262 while (symnum < sec->nsymbols) { |
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263 sym = sec->sorted_symbols[symnum]; |
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264 if (sym->value > pos) { |
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265 if (sym->value - pos < headroom) |
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266 headroom = sym->value - pos; |
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267 break; |
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|
268 } |
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269 /* hit symbol */ |
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270 if (!linebrk) { |
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271 putchar('\n'); |
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272 linebrk = 1; |
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273 } |
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274 switch (sym->class) { |
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275 case C_EXT: |
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276 sym_comment = "Global"; |
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277 break; |
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278 case C_STAT: |
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279 sym_comment = "static"; |
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280 break; |
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281 case C_LABEL: |
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282 sym_comment = "label"; |
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|
283 break; |
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diff
changeset
|
284 default: |
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|
285 sym_comment = "unexpected class!"; |
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|
286 } |
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287 printf("%s:\t; %s\n", sym->name, sym_comment); |
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|
288 symnum++; |
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|
289 } |
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|
290 if (relnum < sec->nreloc) { |
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|
291 rel = sec->int_relocs + relnum; |
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292 if (rel->location == pos) |
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|
293 relnum++; /* it's ours */ |
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|
294 else { |
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diff
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|
295 if (rel->location - pos < headroom) |
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123
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|
296 headroom = rel->location - pos; |
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|
297 rel = 0; /* no reloc for current pos */ |
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diff
changeset
|
298 } |
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123
diff
changeset
|
299 } else |
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123
diff
changeset
|
300 rel = 0; |
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123
diff
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|
301 printf("%8x:\t", pos); |
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123
diff
changeset
|
302 if (rel) { |
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123
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|
303 if (rel->type != RTYPE_LONG) { |
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123
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|
304 printf("error: reloc other than word32 in data section\n"); |
700d77d5cf00
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123
diff
changeset
|
305 return; |
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parents:
123
diff
changeset
|
306 } |
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123
diff
changeset
|
307 if (pos & 3) { |
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123
diff
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|
308 printf("MISALIGNED pos for word32 reloc, aborting\n"); |
700d77d5cf00
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parents:
123
diff
changeset
|
309 return; |
700d77d5cf00
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parents:
123
diff
changeset
|
310 } |
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123
diff
changeset
|
311 disasm_word32_reloc(sec, rel); |
700d77d5cf00
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123
diff
changeset
|
312 incr = 4; |
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123
diff
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|
313 } else if (pos & 1 || headroom < 2) { |
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123
diff
changeset
|
314 printf("%02x\n", filemap[sec->data_offset + pos]); |
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123
diff
changeset
|
315 incr = 1; |
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123
diff
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|
316 } else if (pos & 2 || headroom < 4) { |
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123
diff
changeset
|
317 printf("%04x\n", |
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123
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changeset
|
318 get_u16(filemap + sec->data_offset + pos)); |
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123
diff
changeset
|
319 incr = 2; |
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123
diff
changeset
|
320 } else { |
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123
diff
changeset
|
321 printf("%08x\n", |
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123
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|
322 get_u32(filemap + sec->data_offset + pos)); |
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123
diff
changeset
|
323 incr = 4; |
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123
diff
changeset
|
324 } |
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123
diff
changeset
|
325 linebrk = 0; |
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123
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changeset
|
326 if (incr > headroom) { |
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123
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|
327 printf("error: increment %u > headroom %u, aborting\n", |
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123
diff
changeset
|
328 incr, headroom); |
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123
diff
changeset
|
329 return; |
700d77d5cf00
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parents:
123
diff
changeset
|
330 } |
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123
diff
changeset
|
331 } |
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123
diff
changeset
|
332 if (symnum < sec->nsymbols) |
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123
diff
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|
333 disasm_end_of_section(sec, symnum); |
111
0f94d17899b3
tiobjd: disassembly integrated, no relocs or hints yet
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parents:
diff
changeset
|
334 } |
0f94d17899b3
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parents:
diff
changeset
|
335 |
0f94d17899b3
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
336 void |
125
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124
diff
changeset
|
337 disasm_bss(sec) |
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124
diff
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|
338 struct internal_scnhdr *sec; |
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124
diff
changeset
|
339 { |
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124
diff
changeset
|
340 unsigned m; |
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124
diff
changeset
|
341 struct internal_syment *sym; |
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124
diff
changeset
|
342 char classbuf[8]; |
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124
diff
changeset
|
343 |
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124
diff
changeset
|
344 putchar('\n'); |
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124
diff
changeset
|
345 for (m = 0; m < sec->nsymbols; m++) { |
b8ac21536779
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124
diff
changeset
|
346 sym = sec->sorted_symbols[m]; |
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124
diff
changeset
|
347 printf("%08X %-7s %s\n", sym->value, |
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348 storage_class_to_string(sym->class, classbuf), |
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349 sym->name); |
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350 } |
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351 printf("%08X <end of section>\n", sec->size); |
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352 } |
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353 |
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354 void |
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355 disasm_sectype_by_name(sec) |
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356 struct internal_scnhdr *sec; |
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357 { |
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358 if (!strncmp(sec->name, ".text", 5)) |
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359 disasm_text_section(sec); |
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360 else if (!strcmp(sec->name, ".const")) |
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361 disasm_data_section(sec); |
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362 else if (!strcmp(sec->name, ".cinit")) |
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363 disasm_data_section(sec); |
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364 else if (!strcmp(sec->name, ".data")) |
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365 disasm_data_section(sec); |
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366 else if (!strcmp(sec->name, ".bss")) |
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367 disasm_bss(sec); |
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368 else |
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369 printf("Unrecognized section type, skipped\n"); |
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370 } |
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371 |
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372 cmd_disasm() |
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373 { |
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374 struct internal_scnhdr *sec; |
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375 unsigned secnum; |
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376 |
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377 printf("%s:\n", objfilename); |
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378 dump_filehdr_info(); |
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379 putchar('\n'); |
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380 get_int_section_table(); |
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381 get_int_symbol_table(); |
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382 extern_profile_report("Module"); |
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383 sort_symbols_of_all_sec(); |
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384 for (secnum = 0; secnum < nsections; secnum++) { |
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385 sec = sections + secnum; |
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386 printf("=== %s ===\n", sec->name); |
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387 disasm_sectype_by_name(sec); |
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388 putchar('\n'); |
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389 } |
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390 exit(0); |
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391 } |