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Rev | Author | Line No. | Line |
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5191 | serge | 1 | /* PowerPC NLM (NetWare Loadable Module) support for BFD. |
6324 | serge | 2 | Copyright (C) 1994-2015 Free Software Foundation, Inc. |
5191 | serge | 3 | |
4 | This file is part of BFD, the Binary File Descriptor library. |
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5 | |||
6 | This program is free software; you can redistribute it and/or modify |
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7 | it under the terms of the GNU General Public License as published by |
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8 | the Free Software Foundation; either version 3 of the License, or |
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9 | (at your option) any later version. |
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10 | |||
11 | This program is distributed in the hope that it will be useful, |
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12 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
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13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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14 | GNU General Public License for more details. |
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15 | |||
16 | You should have received a copy of the GNU General Public License |
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17 | along with this program; if not, write to the Free Software |
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18 | Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, |
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19 | MA 02110-1301, USA. */ |
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20 | |||
21 | #ifdef OLDFORMAT |
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22 | |||
23 | /* The format of a PowerPC NLM changed. These structures are only |
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24 | used in the old format. */ |
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25 | |||
26 | /* A PowerPC NLM starts with an instance of this structure. */ |
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27 | |||
28 | struct nlm32_powerpc_external_prefix_header |
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29 | { |
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30 | /* Signature. Must be "AppleNLM". */ |
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31 | char signature[8]; |
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32 | /* Version number. Current value is 1. */ |
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33 | unsigned char headerVersion[4]; |
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34 | /* ??. Should be set to 0. */ |
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35 | unsigned char origins[4]; |
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36 | /* File creation date in standard Unix time format (seconds since |
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37 | 1/1/70). */ |
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38 | unsigned char date[4]; |
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39 | }; |
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40 | |||
41 | #define NLM32_POWERPC_SIGNATURE "AppleNLM" |
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42 | #define NLM32_POWERPC_HEADER_VERSION 1 |
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43 | |||
44 | /* The external format of a PowerPC NLM reloc. This is the same as an |
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45 | XCOFF dynamic reloc. */ |
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46 | |||
47 | struct nlm32_powerpc_external_reloc |
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48 | { |
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49 | /* Address. */ |
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50 | unsigned char l_vaddr[4]; |
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51 | /* Symbol table index. This is 0 for .text and 1 for .data. 2 |
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52 | means .bss, but I don't know if it is used. In XCOFF, larger |
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53 | numbers are indices into the dynamic symbol table, but they are |
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54 | presumably not used in an NLM. */ |
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55 | unsigned char l_symndx[4]; |
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56 | /* Relocation type. */ |
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57 | unsigned char l_rtype[2]; |
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58 | /* Section number being relocated. */ |
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59 | unsigned char l_rsecnm[2]; |
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60 | }; |
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61 | |||
62 | #endif /* OLDFORMAT */ |
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63 | |||
64 | /* The external format of the fixed header. */ |
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65 | |||
66 | typedef struct nlm32_powerpc_external_fixed_header |
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67 | { |
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68 | |||
69 | /* The signature field identifies the file as an NLM. It must contain |
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70 | the signature string, which depends upon the NLM target. */ |
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71 | |||
72 | unsigned char signature[24]; |
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73 | |||
74 | /* The version of the header. At this time, the highest version number |
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75 | is 4. */ |
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76 | |||
77 | unsigned char version[4]; |
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78 | |||
79 | /* The name of the module, which must be a DOS name (1-8 characters followed |
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80 | by a period and a 1-3 character extension). The first byte is the byte |
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81 | length of the name and the last byte is a null terminator byte. This |
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82 | field is fixed length, and any unused bytes should be null bytes. The |
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83 | value is set by the OUTPUT keyword to NLMLINK. */ |
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84 | |||
85 | unsigned char moduleName[14]; |
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86 | |||
87 | /* Padding to make it come out correct. */ |
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88 | |||
89 | unsigned char pad1[2]; |
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90 | |||
91 | /* The byte offset of the code image from the start of the file. */ |
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92 | |||
93 | unsigned char codeImageOffset[4]; |
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94 | |||
95 | /* The size of the code image, in bytes. */ |
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96 | |||
97 | unsigned char codeImageSize[4]; |
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98 | |||
99 | /* The byte offset of the data image from the start of the file. */ |
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100 | |||
101 | unsigned char dataImageOffset[4]; |
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102 | |||
103 | /* The size of the data image, in bytes. */ |
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104 | |||
105 | unsigned char dataImageSize[4]; |
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106 | |||
107 | /* The size of the uninitialized data region that the loader is to be |
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108 | allocated at load time. Uninitialized data follows the initialized |
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109 | data in the NLM address space. */ |
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110 | |||
111 | unsigned char uninitializedDataSize[4]; |
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112 | |||
113 | /* The byte offset of the custom data from the start of the file. The |
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114 | custom data is set by the CUSTOM keyword to NLMLINK. It is possible |
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115 | for this to be EOF if there is no custom data. */ |
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116 | |||
117 | unsigned char customDataOffset[4]; |
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118 | |||
119 | /* The size of the custom data, in bytes. */ |
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120 | |||
121 | unsigned char customDataSize[4]; |
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122 | |||
123 | /* The byte offset of the module dependencies from the start of the file. |
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124 | The module dependencies are determined by the MODULE keyword in |
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125 | NLMLINK. */ |
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126 | |||
127 | unsigned char moduleDependencyOffset[4]; |
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128 | |||
129 | /* The number of module dependencies at the moduleDependencyOffset. */ |
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130 | |||
131 | unsigned char numberOfModuleDependencies[4]; |
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132 | |||
133 | /* The byte offset of the relocation fixup data from the start of the file */ |
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134 | |||
135 | unsigned char relocationFixupOffset[4]; |
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136 | |||
137 | unsigned char numberOfRelocationFixups[4]; |
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138 | |||
139 | unsigned char externalReferencesOffset[4]; |
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140 | |||
141 | unsigned char numberOfExternalReferences[4]; |
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142 | |||
143 | unsigned char publicsOffset[4]; |
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144 | |||
145 | unsigned char numberOfPublics[4]; |
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146 | |||
147 | /* The byte offset of the internal debug info from the start of the file. |
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148 | It is possible for this to be EOF if there is no debug info. */ |
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149 | |||
150 | unsigned char debugInfoOffset[4]; |
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151 | |||
152 | unsigned char numberOfDebugRecords[4]; |
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153 | |||
154 | unsigned char codeStartOffset[4]; |
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155 | |||
156 | unsigned char exitProcedureOffset[4]; |
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157 | |||
158 | unsigned char checkUnloadProcedureOffset[4]; |
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159 | |||
160 | unsigned char moduleType[4]; |
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161 | |||
162 | unsigned char flags[4]; |
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163 | |||
164 | } Nlm32_powerpc_External_Fixed_Header; |