FreeCalypso > hg > freecalypso-reveng

annotate leo-obj/tool/chararray.c @ 376:9b3e5be96bab

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fir2freq: a tool for analyzing captured FIR coefficient sets
author Mychaela Falconia <falcon@freecalypso.org>
date Mon, 02 Aug 2021 04:59:46 +0000
parents 069b79b36228
children
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rev   line source
184
069b79b36228 tiobjd: chararray extraction command implemented
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
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1 /*
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2 * Some COFF objects in TI's firmware semi-src are the result of compiling
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3 * a *.c file that contains nothing more than a const char array. Here
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4 * we support the extraction of these char arrays, to enable recompilation
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5 * with our choice of compiler toolchain.
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6 */
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7
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8 #include <sys/types.h>
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9 #include <stdio.h>
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10 #include <stdlib.h>
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11 #include <string.h>
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12 #include <strings.h>
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13 #include "intstruct.h"
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14 #include "coffconst.h"
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15 #include "globals.h"
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16
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17 extern unsigned get_u16(), get_u32();
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18
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19 cmd_chararray(argc, argv)
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20 char **argv;
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21 {
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22 int c, sflag = 0;
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23 unsigned n, array_len;
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24 char *array_name;
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25 struct internal_syment *sym;
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26 u_char *dp;
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27 extern int optind;
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28 extern char *optarg;
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29
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30 while ((c = getopt(argc, argv, "s:")) != EOF)
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31 switch (c) {
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32 case 's':
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33 array_len = strtoul(optarg, 0, 16);
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34 sflag = 1;
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35 continue;
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36 default:
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37 /* error msg already printed */
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38 exit(1);
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39 }
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40 if (argc != optind + 1) {
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41 fprintf(stderr, "tiobjd chararray: name argument required\n");
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42 exit(1);
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43 }
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44 array_name = argv[optind];
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45
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46 get_int_section_table();
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47 get_int_symbol_table();
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48 for (n = 0; n < nsymtab; n++) {
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49 sym = symtab[n];
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50 if (!sym)
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51 continue;
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52 if (sym->class != C_EXT)
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53 continue;
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54 if (sym->name[0] != '_')
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55 continue;
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56 if (!strcmp(sym->name + 1, array_name))
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57 goto found;
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58 }
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59 fprintf(stderr, "error: found no global symbol named %s\n", array_name);
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60 exit(1);
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61
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62 found: if (!sym->section) {
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63 fprintf(stderr, "error: %s is not defined in a section\n",
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64 array_name);
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65 exit(1);
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66 }
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67 if (!sflag) {
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68 if (sym->type != 0x003C) {
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69 fprintf(stderr,
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70 "error: %s has type != array of u_char\n",
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71 array_name);
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72 exit(1);
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73 }
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74 if (!sym->aux) {
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75 fprintf(stderr, "error: %s has no Aux record\n",
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76 array_name);
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77 exit(1);
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78 }
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79 array_len = get_u16(sym->aux + 8);
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80 }
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81 dp = filemap + sym->section->data_offset + sym->value;
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82 printf("const unsigned char %s[%u] = {", array_name, array_len);
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83 for (n = 0; n < array_len; n++) {
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84 if (!(n & 15))
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85 putchar('\n');
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86 printf("0x%02X,", *dp++);
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87 }
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88 puts("\n};");
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89 exit(0);
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90 }