FreeCalypso > hg > freecalypso-reveng

annotate leo-obj/tool/ln.c @ 333:f8a4a330d0e6

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frbl/reconst/serial.c: 0x200 static function reconstructed
author Mychaela Falconia <falcon@freecalypso.org>
date Sat, 07 Mar 2020 02:10:27 +0000
parents 71e25510f5af
children
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rev   line source
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1 /*
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2 * Making use of line number records
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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 "filestruct.h"
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9 #include "intstruct.h"
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10 #include "coffconst.h"
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11 #include "globals.h"
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12
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13 extern unsigned get_u16(), get_u32();
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14
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15 cmd_ln()
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16 {
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17 unsigned n, m;
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18 struct internal_scnhdr *sec;
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19 u_char *rec;
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20
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21 get_int_section_table();
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22 for (n = 0; n < nsections; n++) {
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23 sec = sections + n;
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24 if (!sec->nlineent)
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25 continue;
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26 printf("%s:\n\n", sec->name);
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27 rec = filemap + sec->line_offset;
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28 for (m = 0; m < sec->nlineent; m++, rec += 6)
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29 printf("%08X %04X\n", get_u32(rec), get_u16(rec + 4));
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30 putchar('\n');
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31 }
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32 exit(0);
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33 }
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34
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35 static unsigned
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36 get_lineno_base(func_symidx)
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37 unsigned func_symidx;
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38 {
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39 struct internal_syment *func_sym, *bf_sym;
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40
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41 if (func_symidx >= nsymtab)
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42 return 0;
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43 func_sym = symtab[func_symidx];
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44 if (!func_sym->aux)
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45 return 0;
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46 if (func_symidx + 2 >= nsymtab)
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47 return 0;
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48 bf_sym = symtab[func_symidx + 2];
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49 if (!bf_sym->aux)
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50 return 0;
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51 return get_u16(bf_sym->aux + 4);
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52 }
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53
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54 get_lineno_array(sec, arr_rtn, count_rtn, actual_numbers)
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55 struct internal_scnhdr *sec;
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56 struct internal_lineno **arr_rtn;
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57 unsigned *count_rtn;
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58 {
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59 struct internal_lineno *array;
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60 unsigned cur, last;
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61 unsigned n, m;
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62 unsigned base, incr;
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63 u_char *rec;
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64
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65 array = malloc(sizeof(struct internal_lineno) * sec->nlineent);
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66 if (!array) {
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67 perror("malloc");
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68 exit(1);
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69 }
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70 m = 0;
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71 rec = filemap + sec->line_offset;
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72 base = 0;
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73 for (n = 0; n < sec->nlineent; n++, rec += 6) {
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74 incr = get_u16(rec + 4);
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75 if (!incr) {
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76 if (actual_numbers)
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77 base = get_lineno_base(get_u32(rec));
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78 continue;
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79 }
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80 cur = get_u32(rec);
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81 if (m) {
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82 if (cur < last) {
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83 fprintf(stderr,
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84 "error: line # addresses in section %s going backward\n",
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85 sec->name);
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86 exit(1);
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87 }
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88 if (cur == last && !actual_numbers)
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89 continue;
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90 }
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91 if (actual_numbers) {
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92 if (!base) {
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93 fprintf(stderr,
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94 "error: no line # base in section %s\n",
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95 sec->name);
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96 exit(1);
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97 }
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98 array[m].lineno = base + incr - 1;
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99 }
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100 array[m++].location = cur;
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101 last = cur;
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102 }
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103 *arr_rtn = array;
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104 *count_rtn = m;
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105 }