1/* i386 NLM (NetWare Loadable Module) support for BFD.
2   Copyright 1993 Free Software Foundation, Inc.
3
4This file is part of BFD, the Binary File Descriptor library.
5
6This program is free software; you can redistribute it and/or modify
7it under the terms of the GNU General Public License as published by
8the Free Software Foundation; either version 2 of the License, or
9(at your option) any later version.
10
11This program is distributed in the hope that it will be useful,
12but WITHOUT ANY WARRANTY; without even the implied warranty of
13MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
14GNU General Public License for more details.
15
16You should have received a copy of the GNU General Public License
17along with this program; if not, write to the Free Software
18Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA.  */
19
20/* The external format of the fixed header.  */
21
22typedef struct nlm32_i386_external_fixed_header
23{
24
25  /* The signature field identifies the file as an NLM.  It must contain
26     the signature string, which depends upon the NLM target. */
27
28  unsigned char signature[24];
29
30  /* The version of the header.  At this time, the highest version number
31     is 4. */
32
33  unsigned char version[4];
34
35  /* The name of the module, which must be a DOS name (1-8 characters followed
36     by a period and a 1-3 character extension).  The first byte is the byte
37     length of the name and the last byte is a null terminator byte.  This
38     field is fixed length, and any unused bytes should be null bytes.  The
39     value is set by the OUTPUT keyword to NLMLINK. */
40
41  unsigned char moduleName[14];
42
43  /* The byte offset of the code image from the start of the file. */
44
45  unsigned char codeImageOffset[4];
46
47  /* The size of the code image, in bytes. */
48
49  unsigned char codeImageSize[4];
50
51  /* The byte offset of the data image from the start of the file. */
52
53  unsigned char dataImageOffset[4];
54
55  /* The size of the data image, in bytes. */
56
57  unsigned char dataImageSize[4];
58
59  /* The size of the uninitialized data region that the loader is to be
60     allocated at load time.  Uninitialized data follows the initialized
61     data in the NLM address space. */
62
63  unsigned char uninitializedDataSize[4];
64
65  /* The byte offset of the custom data from the start of the file.  The
66     custom data is set by the CUSTOM keyword to NLMLINK.  It is possible
67     for this to be EOF if there is no custom data. */
68
69  unsigned char customDataOffset[4];
70
71  /* The size of the custom data, in bytes. */
72
73  unsigned char customDataSize[4];
74
75  /* The byte offset of the module dependencies from the start of the file.
76     The module dependencies are determined by the MODULE keyword in
77     NLMLINK. */
78
79  unsigned char moduleDependencyOffset[4];
80
81  /* The number of module dependencies at the moduleDependencyOffset. */
82
83  unsigned char numberOfModuleDependencies[4];
84
85  /* The byte offset of the relocation fixup data from the start of the file */
86
87  unsigned char relocationFixupOffset[4];
88
89  unsigned char numberOfRelocationFixups[4];
90
91  unsigned char externalReferencesOffset[4];
92
93  unsigned char numberOfExternalReferences[4];
94
95  unsigned char publicsOffset[4];
96
97  unsigned char numberOfPublics[4];
98
99  /* The byte offset of the internal debug info from the start of the file.
100     It is possible for this to be EOF if there is no debug info. */
101
102  unsigned char debugInfoOffset[4];
103
104  unsigned char numberOfDebugRecords[4];
105
106  unsigned char codeStartOffset[4];
107
108  unsigned char exitProcedureOffset[4];
109
110  unsigned char checkUnloadProcedureOffset[4];
111
112  unsigned char moduleType[4];
113
114  unsigned char flags[4];
115
116} Nlm32_i386_External_Fixed_Header;
117