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annotate dspanal/char2coff.c @ 325:7df08926a4e7

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frbl2test: better message for Hello response
author Mychaela Falconia <falcon@freecalypso.org>
date Fri, 06 Mar 2020 01:59:20 +0000
parents f8344bc4fd61
children
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308
f8344bc4fd61 dspanal: char2coff utility written, compiles
Mychaela Falconia <falcon@freecalypso.org>
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1 /*
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2 * This program will convert C char array files into COFF
f8344bc4fd61 dspanal: char2coff utility written, compiles
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3 * for disassembly analysis.
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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 <stdint.h>
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9 #include <stdlib.h>
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10 #include "coffout.h"
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11
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12 extern unsigned read_char_file();
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13
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14 static u_char binbuffer[300000];
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15 static unsigned array_size;
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16 static u_char *array_ptr, *array_end;
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17
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18 #define MAX_SECTIONS 256
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19
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20 static struct coff_section sections[MAX_SECTIONS];
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21 static unsigned nsections;
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22
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23 static void
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24 add_section(addr, size, data)
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25 uint32_t addr, size;
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26 u_char *data;
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27 {
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28 struct coff_section *sec;
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29
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30 if (nsections >= MAX_SECTIONS) {
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31 fprintf(stderr, "error: too many sections\n");
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32 exit(1);
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33 }
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34 sec = sections + nsections;
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35 sec->addr = addr;
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36 sec->size = size;
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37 sec->data = data;
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38 sec->flags = 0x0020;
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39 sec->mempage = 0x00;
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40 nsections++;
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41 }
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42
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43 static uint32_t
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44 get_longword()
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45 {
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46 uint32_t datum;
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47
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48 if (array_ptr + 4 > array_end) {
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49 fprintf(stderr, "error: parse spills past end of array\n");
f8344bc4fd61 dspanal: char2coff utility written, compiles
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50 exit(1);
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51 }
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52 datum = (array_ptr[3] << 24) | (array_ptr[2] << 16) |
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53 (array_ptr[1] << 8) | array_ptr[0];
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54 array_ptr += 4;
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55 return datum;
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56 }
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57
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58 main(argc, argv)
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59 char **argv;
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60 {
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61 uint32_t addr, size;
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62
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63 if (argc != 3) {
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64 fprintf(stderr, "usage: %s char-array-file coff-output-file\n",
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65 argv[0]);
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66 exit(1);
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67 }
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68 array_size = read_char_file(argv[1], binbuffer, sizeof binbuffer);
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69 array_ptr = binbuffer;
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70 array_end = array_ptr + array_size;
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71 if (get_longword() != 0) {
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72 fprintf(stderr, "error: initial tag 0 is missing\n");
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73 exit(1);
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74 }
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75 if (get_longword() != 3) {
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76 fprintf(stderr, "error: initial vers 3 is missing\n");
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77 exit(1);
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78 }
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79 for (;;) {
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80 size = get_longword();
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81 if (size > 0x10000) {
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82 fprintf(stderr, "error: section size unreasonable\n");
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83 exit(1);
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84 }
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85 addr = get_longword();
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86 if (!size)
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87 break;
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88 add_section(addr, size, array_ptr);
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89 array_ptr += size << 1;
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90 }
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91 emit_coff_output(argv[2], sections, nsections);
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92 exit(0);
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93 }