Annotation of /trunk/linterm_tools/fw_builder/bundle-tools/fwstruct.h
Parent Directory | Revision Log
Revision 658 -
(hide annotations)
(download)
Mon Jan 14 16:57:24 2008 UTC (16 years, 4 months ago) by niro
File MIME type: text/plain
File size: 2119 byte(s)
Mon Jan 14 16:57:24 2008 UTC (16 years, 4 months ago) by niro
File MIME type: text/plain
File size: 2119 byte(s)
initial import
1 | niro | 658 | /* |
2 | Contains some structures used by fwpack and fwextract | ||
3 | Copyright (C) 2005 Wilmer van der Gaast <wilmer@gaast.net> | ||
4 | |||
5 | This program is free software; you can redistribute it and/or | ||
6 | modify it under the terms of the second version of the GNU | ||
7 | General Public License as published by the Free Software | ||
8 | Foundation. | ||
9 | |||
10 | This program is distributed in the hope that it will be useful, | ||
11 | but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | ||
13 | GNU General Public License for more details. | ||
14 | |||
15 | You should have received a copy of the GNU General Public License | ||
16 | along with this program; if not, write to the Free Software | ||
17 | Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. | ||
18 | */ | ||
19 | |||
20 | #pragma pack(1) | ||
21 | |||
22 | struct header | ||
23 | { | ||
24 | u_int16_t hsize; /* Confusing: hsize == header size */ | ||
25 | u_int8_t fnlen; | ||
26 | u_int32_t bios_flag; | ||
27 | u_int32_t offset; | ||
28 | u_int32_t fsize; /* file/contents size */ | ||
29 | u_int32_t time; | ||
30 | u_int32_t checksum; | ||
31 | u_int8_t sys_flag[3]; | ||
32 | char fn[0]; | ||
33 | }; | ||
34 | |||
35 | struct index | ||
36 | { | ||
37 | struct header *h; | ||
38 | struct index *next; | ||
39 | off_t idx_offset; | ||
40 | char *realfile; | ||
41 | }; | ||
42 | |||
43 | #if BYTE_ORDER == BIG_ENDIAN | ||
44 | #define cvt32(x) ((((x)&0xff)<<24) | (((x)&0xff00)<<8) | (((x)&0xff0000)>>8) | (((x)&0xff000000)>>24)) | ||
45 | #define cvt16(x) ((((x)&0xff)<< 8) | (((x)&0xff00)>>8)) | ||
46 | #else | ||
47 | #define cvt32(x) (x) | ||
48 | #define cvt16(x) (x) | ||
49 | #endif | ||
50 | |||
51 | void cvtheader( struct header *h ) | ||
52 | { | ||
53 | #if BYTE_ORDER == BIG_ENDIAN | ||
54 | h->hsize = cvt16( h->hsize ); | ||
55 | h->bios_flag = cvt32( h->bios_flag ); | ||
56 | h->offset = cvt32( h->offset ); | ||
57 | h->fsize = cvt32( h->fsize ); | ||
58 | h->time = cvt32( h->time ); | ||
59 | h->checksum = cvt32( h->checksum ); | ||
60 | #endif | ||
61 | } | ||
62 | |||
63 | void structcheck( void ) | ||
64 | { | ||
65 | unsigned int test = 1; | ||
66 | |||
67 | if( ( *((char*)&test) == 1 && BYTE_ORDER == BIG_ENDIAN ) || ( *((char*)&test) == 0 && BYTE_ORDER == LITTLE_ENDIAN ) ) | ||
68 | { | ||
69 | fprintf( stderr, "Program compiled for wrong byte order.\n" ); | ||
70 | exit( 1 ); | ||
71 | } | ||
72 | |||
73 | if( sizeof( struct header ) != 26 ) | ||
74 | { | ||
75 | fprintf( stderr, "sizeof(struct header) must be 26, does your compiler understand #pragma pack?\n" ); | ||
76 | exit( 1 ); | ||
77 | } | ||
78 | } |