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252b5132 | 1 | /* PowerPC NLM (NetWare Loadable Module) support for BFD. |
aa820537 | 2 | Copyright (C) 1994, 2005 Free Software Foundation, Inc. |
252b5132 RH |
3 | |
4 | This file is part of BFD, the Binary File Descriptor library. | |
5 | ||
6 | This program is free software; you can redistribute it and/or modify | |
7 | it under the terms of the GNU General Public License as published by | |
8 | the Free Software Foundation; either version 2 of the License, or | |
9 | (at your option) any later version. | |
10 | ||
11 | This program is distributed in the hope that it will be useful, | |
12 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | GNU General Public License for more details. | |
15 | ||
16 | You should have received a copy of the GNU General Public License | |
17 | along with this program; if not, write to the Free Software | |
e172dbf8 | 18 | Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA. */ |
252b5132 RH |
19 | |
20 | #ifdef OLDFORMAT | |
21 | ||
22 | /* The format of a PowerPC NLM changed. These structures are only | |
23 | used in the old format. */ | |
24 | ||
25 | /* A PowerPC NLM starts with an instance of this structure. */ | |
26 | ||
27 | struct nlm32_powerpc_external_prefix_header | |
28 | { | |
29 | /* Signature. Must be "AppleNLM". */ | |
30 | char signature[8]; | |
31 | /* Version number. Current value is 1. */ | |
32 | unsigned char headerVersion[4]; | |
33 | /* ??. Should be set to 0. */ | |
34 | unsigned char origins[4]; | |
35 | /* File creation date in standard Unix time format (seconds since | |
36 | 1/1/70). */ | |
37 | unsigned char date[4]; | |
38 | }; | |
39 | ||
40 | #define NLM32_POWERPC_SIGNATURE "AppleNLM" | |
41 | #define NLM32_POWERPC_HEADER_VERSION 1 | |
42 | ||
43 | /* The external format of a PowerPC NLM reloc. This is the same as an | |
44 | XCOFF dynamic reloc. */ | |
45 | ||
46 | struct nlm32_powerpc_external_reloc | |
47 | { | |
48 | /* Address. */ | |
49 | unsigned char l_vaddr[4]; | |
50 | /* Symbol table index. This is 0 for .text and 1 for .data. 2 | |
51 | means .bss, but I don't know if it is used. In XCOFF, larger | |
52 | numbers are indices into the dynamic symbol table, but they are | |
53 | presumably not used in an NLM. */ | |
54 | unsigned char l_symndx[4]; | |
55 | /* Relocation type. */ | |
56 | unsigned char l_rtype[2]; | |
57 | /* Section number being relocated. */ | |
58 | unsigned char l_rsecnm[2]; | |
59 | }; | |
60 | ||
61 | #endif /* OLDFORMAT */ | |
62 | ||
63 | /* The external format of the fixed header. */ | |
64 | ||
65 | typedef struct nlm32_powerpc_external_fixed_header | |
66 | { | |
67 | ||
68 | /* The signature field identifies the file as an NLM. It must contain | |
69 | the signature string, which depends upon the NLM target. */ | |
70 | ||
71 | unsigned char signature[24]; | |
72 | ||
73 | /* The version of the header. At this time, the highest version number | |
74 | is 4. */ | |
75 | ||
76 | unsigned char version[4]; | |
77 | ||
78 | /* The name of the module, which must be a DOS name (1-8 characters followed | |
79 | by a period and a 1-3 character extension). The first byte is the byte | |
80 | length of the name and the last byte is a null terminator byte. This | |
81 | field is fixed length, and any unused bytes should be null bytes. The | |
82 | value is set by the OUTPUT keyword to NLMLINK. */ | |
83 | ||
84 | unsigned char moduleName[14]; | |
85 | ||
86 | /* Padding to make it come out correct. */ | |
87 | ||
88 | unsigned char pad1[2]; | |
89 | ||
90 | /* The byte offset of the code image from the start of the file. */ | |
91 | ||
92 | unsigned char codeImageOffset[4]; | |
93 | ||
94 | /* The size of the code image, in bytes. */ | |
95 | ||
96 | unsigned char codeImageSize[4]; | |
97 | ||
98 | /* The byte offset of the data image from the start of the file. */ | |
99 | ||
100 | unsigned char dataImageOffset[4]; | |
101 | ||
102 | /* The size of the data image, in bytes. */ | |
103 | ||
104 | unsigned char dataImageSize[4]; | |
105 | ||
106 | /* The size of the uninitialized data region that the loader is to be | |
107 | allocated at load time. Uninitialized data follows the initialized | |
108 | data in the NLM address space. */ | |
109 | ||
110 | unsigned char uninitializedDataSize[4]; | |
111 | ||
112 | /* The byte offset of the custom data from the start of the file. The | |
113 | custom data is set by the CUSTOM keyword to NLMLINK. It is possible | |
114 | for this to be EOF if there is no custom data. */ | |
115 | ||
116 | unsigned char customDataOffset[4]; | |
117 | ||
118 | /* The size of the custom data, in bytes. */ | |
119 | ||
120 | unsigned char customDataSize[4]; | |
121 | ||
122 | /* The byte offset of the module dependencies from the start of the file. | |
123 | The module dependencies are determined by the MODULE keyword in | |
124 | NLMLINK. */ | |
125 | ||
126 | unsigned char moduleDependencyOffset[4]; | |
127 | ||
128 | /* The number of module dependencies at the moduleDependencyOffset. */ | |
129 | ||
130 | unsigned char numberOfModuleDependencies[4]; | |
131 | ||
132 | /* The byte offset of the relocation fixup data from the start of the file */ | |
133 | ||
134 | unsigned char relocationFixupOffset[4]; | |
135 | ||
136 | unsigned char numberOfRelocationFixups[4]; | |
137 | ||
138 | unsigned char externalReferencesOffset[4]; | |
139 | ||
140 | unsigned char numberOfExternalReferences[4]; | |
141 | ||
142 | unsigned char publicsOffset[4]; | |
143 | ||
144 | unsigned char numberOfPublics[4]; | |
145 | ||
146 | /* The byte offset of the internal debug info from the start of the file. | |
147 | It is possible for this to be EOF if there is no debug info. */ | |
148 | ||
149 | unsigned char debugInfoOffset[4]; | |
150 | ||
151 | unsigned char numberOfDebugRecords[4]; | |
152 | ||
153 | unsigned char codeStartOffset[4]; | |
154 | ||
155 | unsigned char exitProcedureOffset[4]; | |
156 | ||
157 | unsigned char checkUnloadProcedureOffset[4]; | |
158 | ||
159 | unsigned char moduleType[4]; | |
160 | ||
161 | unsigned char flags[4]; | |
162 | ||
163 | } Nlm32_powerpc_External_Fixed_Header; |