source: trunk/libs/newlib/src/include/nlm/ppc-ext.h @ 643

Last change on this file since 643 was 444, checked in by satin@…, 6 years ago

add newlib,libalmos-mkh, restructure shared_syscalls.h and mini-libc

File size: 4.9 KB
Line 
1/* PowerPC NLM (NetWare Loadable Module) support for BFD.
2   Copyright (C) 1994, 2005, 2010 Free Software Foundation, Inc.
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 3 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
18   Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
19   MA 02110-1301, USA.  */
20
21#ifdef OLDFORMAT
22
23/* The format of a PowerPC NLM changed.  These structures are only
24   used in the old format.  */
25
26/* A PowerPC NLM starts with an instance of this structure.  */
27
28struct nlm32_powerpc_external_prefix_header
29{
30  /* Signature.  Must be "AppleNLM".  */
31  char signature[8];
32  /* Version number.  Current value is 1.  */
33  unsigned char headerVersion[4];
34  /* ??.  Should be set to 0.  */
35  unsigned char origins[4];
36  /* File creation date in standard Unix time format (seconds since
37     1/1/70).  */
38  unsigned char date[4];
39};
40
41#define NLM32_POWERPC_SIGNATURE "AppleNLM"
42#define NLM32_POWERPC_HEADER_VERSION 1
43
44/* The external format of a PowerPC NLM reloc.  This is the same as an
45   XCOFF dynamic reloc.  */
46
47struct nlm32_powerpc_external_reloc
48{
49  /* Address.  */
50  unsigned char l_vaddr[4];
51  /* Symbol table index.  This is 0 for .text and 1 for .data.  2
52     means .bss, but I don't know if it is used.  In XCOFF, larger
53     numbers are indices into the dynamic symbol table, but they are
54     presumably not used in an NLM.  */
55  unsigned char l_symndx[4];
56  /* Relocation type.  */
57  unsigned char l_rtype[2];
58  /* Section number being relocated.  */
59  unsigned char l_rsecnm[2];
60};
61
62#endif /* OLDFORMAT */
63
64/* The external format of the fixed header.  */
65
66typedef struct nlm32_powerpc_external_fixed_header
67{
68
69  /* The signature field identifies the file as an NLM.  It must contain
70     the signature string, which depends upon the NLM target. */
71
72  unsigned char signature[24];
73
74  /* The version of the header.  At this time, the highest version number
75     is 4. */
76
77  unsigned char version[4];
78
79  /* The name of the module, which must be a DOS name (1-8 characters followed
80     by a period and a 1-3 character extension).  The first byte is the byte
81     length of the name and the last byte is a null terminator byte.  This
82     field is fixed length, and any unused bytes should be null bytes.  The
83     value is set by the OUTPUT keyword to NLMLINK. */
84
85  unsigned char moduleName[14];
86
87  /* Padding to make it come out correct. */
88
89  unsigned char pad1[2];
90
91  /* The byte offset of the code image from the start of the file. */
92
93  unsigned char codeImageOffset[4];
94
95  /* The size of the code image, in bytes. */
96
97  unsigned char codeImageSize[4];
98
99  /* The byte offset of the data image from the start of the file. */
100
101  unsigned char dataImageOffset[4];
102
103  /* The size of the data image, in bytes. */
104
105  unsigned char dataImageSize[4];
106
107  /* The size of the uninitialized data region that the loader is to be
108     allocated at load time.  Uninitialized data follows the initialized
109     data in the NLM address space. */
110
111  unsigned char uninitializedDataSize[4];
112
113  /* The byte offset of the custom data from the start of the file.  The
114     custom data is set by the CUSTOM keyword to NLMLINK.  It is possible
115     for this to be EOF if there is no custom data. */
116
117  unsigned char customDataOffset[4];
118
119  /* The size of the custom data, in bytes. */
120
121  unsigned char customDataSize[4];
122
123  /* The byte offset of the module dependencies from the start of the file.
124     The module dependencies are determined by the MODULE keyword in
125     NLMLINK. */
126
127  unsigned char moduleDependencyOffset[4];
128
129  /* The number of module dependencies at the moduleDependencyOffset. */
130
131  unsigned char numberOfModuleDependencies[4];
132
133  /* The byte offset of the relocation fixup data from the start of the file */
134     
135  unsigned char relocationFixupOffset[4];
136
137  unsigned char numberOfRelocationFixups[4];
138
139  unsigned char externalReferencesOffset[4];
140
141  unsigned char numberOfExternalReferences[4];
142
143  unsigned char publicsOffset[4];
144
145  unsigned char numberOfPublics[4];
146
147  /* The byte offset of the internal debug info from the start of the file.
148     It is possible for this to be EOF if there is no debug info. */
149
150  unsigned char debugInfoOffset[4];
151
152  unsigned char numberOfDebugRecords[4];
153
154  unsigned char codeStartOffset[4];
155
156  unsigned char exitProcedureOffset[4];
157
158  unsigned char checkUnloadProcedureOffset[4];
159
160  unsigned char moduleType[4];
161
162  unsigned char flags[4];
163
164} Nlm32_powerpc_External_Fixed_Header;
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