FreeCalypso > hg > freecalypso-reveng
annotate pirollback/init.c @ 143:fbdb7686a9e9
tiobjd: raw dump of line number records implemented
author | Michael Spacefalcon <msokolov@ivan.Harhan.ORG> |
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date | Mon, 28 Apr 2014 05:55:40 +0000 |
parents | 15c2ac2c5c73 |
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rev | line source |
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42
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1 #include <sys/types.h> |
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2 #include <sys/file.h> |
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3 #include <endian.h> |
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4 #include <stdio.h> |
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5 #include <string.h> |
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6 #include <strings.h> |
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7 #include <stdlib.h> |
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8 #include <unistd.h> |
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9 #include "types.h" |
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10 #include "struct.h" |
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11 |
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12 u8 blank_flash_line[16] = {0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, |
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13 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF}; |
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14 |
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15 char *imgfile; |
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16 u8 image[0x480000]; |
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17 struct inode_info inode[0x4000]; |
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18 int last_inode; |
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19 |
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20 static u8 magichdr_first[9] = {'F','f','s','#', 0x10, 0x02, 0xFF, 0xFF, 0xAB}; |
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21 static u8 magichdr_mid[9] = {'F','f','s','#', 0x10, 0x02, 0xFF, 0xFF, 0xBD}; |
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22 static u8 magichdr_last[9] = {'F','f','s','#', 0x10, 0x02, 0xFF, 0xFF, 0xBF}; |
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23 |
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24 read_img_file() |
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25 { |
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26 int i, fd, cc; |
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27 u8 *blk, *compare; |
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28 |
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29 fd = open(imgfile, O_RDONLY); |
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30 if (fd < 0) { |
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31 perror(imgfile); |
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32 exit(1); |
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33 } |
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34 cc = read(fd, image, sizeof image); |
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35 close(fd); |
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36 if (cc != sizeof image) { |
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37 inv: fprintf(stderr, |
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38 "%s does not appear to be a \"virgin\" Pirelli FFS image\n", |
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39 imgfile); |
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40 exit(1); |
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41 } |
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42 for (i = 0; i < 18; i++) { |
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43 blk = image + i * 0x40000; |
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44 if (i == 0) |
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45 compare = magichdr_first; |
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46 else if (i == 17) |
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47 compare = magichdr_last; |
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48 else |
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49 compare = magichdr_mid; |
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50 if (bcmp(blk, compare, 9)) |
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51 goto inv; |
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52 } |
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53 } |
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54 |
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55 static int |
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56 convert_ptr(ptr, ino, which) |
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57 int ptr, ino; |
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58 char *which; |
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59 { |
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60 if (ptr >= 1 && ptr <= 0x3FFF) |
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61 return(ptr); |
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62 if (ptr == 0xFFFF) |
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63 return(0); |
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64 fprintf(stderr, "error in inode #%x: invalid %s pointer\n", ino, which); |
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65 exit(1); |
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66 } |
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67 |
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68 read_inodes() |
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69 { |
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70 int ino; |
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71 struct inode_flash *fl; |
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72 struct inode_info *inf; |
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73 |
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74 for (ino = 1; ino < 0x4000; ino++) { |
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75 fl = (struct inode_flash *) image + ino; |
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76 if (!bcmp(fl, blank_flash_line, 16)) |
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77 break; |
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78 inf = inode + ino; |
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79 inf->flash = fl; |
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80 inf->len = le16toh(fl->len); |
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81 if (!inf->len) { |
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82 fprintf(stderr, "error: inode %x has zero length\n", |
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83 ino); |
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84 exit(1); |
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85 } |
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86 if (inf->len & 0xF) { |
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87 fprintf(stderr, "error: inode %x has bad length\n", |
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88 ino); |
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89 exit(1); |
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90 } |
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91 inf->type = fl->type; |
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92 inf->descend = convert_ptr(le16toh(fl->descend), ino, |
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93 "descendant"); |
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94 inf->sibling = convert_ptr(le16toh(fl->sibling), ino, |
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95 "sibling"); |
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96 inf->rawloc = le32toh(fl->dataptr); |
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97 if (inf->rawloc >= 0x48000) { |
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98 invdptr: fprintf(stderr, |
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99 "error: inode %x data pointer is out of bounds\n", |
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100 ino); |
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101 exit(1); |
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102 } |
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103 inf->offset = inf->rawloc << 4; |
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104 if (inf->offset + inf->len > 0x480000) |
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105 goto invdptr; |
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106 inf->dataptr = image + inf->offset; |
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107 } |
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108 last_inode = ino - 1; |
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109 if (!last_inode) { |
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110 fprintf(stderr, "error: no inodes found!\n"); |
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111 exit(1); |
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112 } |
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113 } |