1 /* BFD back-end data structures for NLM (NetWare Loadable Modules) files.
2 Copyright (C) 1993 Free Software Foundation, Inc.
3 Written by Cygnus Support.
5 This file is part of BFD, the Binary File Descriptor library.
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 2 of the License, or
10 (at your option) any later version.
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with this program; if not, write to the Free Software
19 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
25 # define NLM_ARCH_SIZE ARCH_SIZE
27 #include "nlm/common.h"
28 #include "nlm/internal.h"
29 #include "nlm/external.h"
31 /* A reloc for an imported NLM symbol. Normal relocs are associated
32 with sections, and include a symbol. These relocs are associated
33 with (undefined) symbols, and include a section. */
37 /* Section of reloc. */
39 /* Reloc info (sym_ptr_ptr field set only when canonicalized). */
43 /* Information we keep for an NLM symbol. */
49 /* Number of reloc entries for imported symbol. */
51 /* Array of reloc information for imported symbol. */
52 struct nlm_relent *relocs;
53 } nlmNAME(symbol_type);
55 extern boolean nlm_mkobject PARAMS ((bfd *));
56 extern boolean nlm_set_arch_mach PARAMS ((bfd *, enum bfd_architecture,
59 extern void nlmNAME(get_symbol_info)
60 PARAMS ((bfd *, asymbol *, symbol_info *));
61 extern unsigned int nlmNAME(get_symtab_upper_bound)
63 extern unsigned int nlmNAME(get_symtab)
64 PARAMS ((bfd *, asymbol **));
65 extern asymbol *nlmNAME(make_empty_symbol)
67 extern void nlmNAME(print_symbol)
68 PARAMS ((bfd *, PTR, asymbol *, bfd_print_symbol_type));
69 extern unsigned int nlmNAME(get_reloc_upper_bound)
70 PARAMS ((bfd *, asection *));
71 extern unsigned int nlmNAME(canonicalize_reloc)
72 PARAMS ((bfd *, asection *, arelent **, asymbol **));
73 extern bfd_target *nlmNAME(object_p)
75 extern boolean nlmNAME(set_arch_mach)
76 PARAMS ((bfd *, enum bfd_architecture, unsigned long));
77 extern boolean nlmNAME(set_section_contents)
78 PARAMS ((bfd *, asection *, PTR, file_ptr, bfd_size_type));
79 extern boolean nlmNAME(write_object_contents)
82 /* Some private data is stashed away for future use using the tdata pointer
83 in the bfd structure. */
87 /* Actual data, but ref like ptr */
88 Nlm_Internal_Fixed_Header nlm_fixed_hdr[1];
89 Nlm_Internal_Variable_Header nlm_variable_hdr[1];
90 Nlm_Internal_Version_Header nlm_version_hdr[1];
91 Nlm_Internal_Copyright_Header nlm_copyright_hdr[1];
92 Nlm_Internal_Extended_Header nlm_extended_hdr[1];
93 Nlm_Internal_Custom_Header nlm_custom_hdr[1];
94 /* BFD NLM symbols. */
95 nlmNAME(symbol_type) *nlm_symbols;
96 /* Lowest text and data VMA values. */
99 /* Caches for data read from object file. */
100 arelent * nlm_reloc_fixups;
101 asection ** nlm_reloc_fixup_secs;
104 #define nlm_tdata(bfd) ((bfd) -> tdata.nlm_obj_data)
105 #define nlm_fixed_header(bfd) (nlm_tdata(bfd) -> nlm_fixed_hdr)
106 #define nlm_variable_header(bfd) (nlm_tdata(bfd) -> nlm_variable_hdr)
107 #define nlm_version_header(bfd) (nlm_tdata(bfd) -> nlm_version_hdr)
108 #define nlm_copyright_header(bfd) (nlm_tdata(bfd) -> nlm_copyright_hdr)
109 #define nlm_extended_header(bfd) (nlm_tdata(bfd) -> nlm_extended_hdr)
110 #define nlm_custom_header(bfd) (nlm_tdata(bfd) -> nlm_custom_hdr)
111 #define nlm_get_symbols(bfd) (nlm_tdata(bfd) -> nlm_symbols)
112 #define nlm_set_symbols(bfd, p) (nlm_tdata(bfd) -> nlm_symbols = (p))
113 #define nlm_set_text_low(bfd, i) (nlm_tdata(bfd) -> nlm_text_low = (i))
114 #define nlm_get_text_low(bfd) (nlm_tdata(bfd) -> nlm_text_low)
115 #define nlm_set_data_low(bfd, i) (nlm_tdata(bfd) -> nlm_data_low = (i))
116 #define nlm_get_data_low(bfd) (nlm_tdata(bfd) -> nlm_data_low)
117 #define nlm_relocation_fixups(bfd) (nlm_tdata(bfd) -> nlm_reloc_fixups)
118 #define nlm_relocation_fixup_secs(bfd) (nlm_tdata(bfd)->nlm_reloc_fixup_secs)
120 /* We store some function pointer in the backend structure. This lets
121 different NLM targets share most of the same code, while providing
122 slightly different code where necessary. */
124 struct nlm_backend_data
126 /* Machine architecture. */
127 enum bfd_architecture arch;
128 /* Read a relocation fixup from abfd. The reloc information is
129 machine specific. The second argument is the symbol if this is
130 an import, or NULL if this is a reloc fixup. This function
131 should set the third argument to the section which the reloc
132 belongs in, and the fourth argument to the reloc itself; it does
133 not need to fill in the sym_ptr_ptr field for a reloc against an
135 boolean (*nlm_read_reloc) PARAMS ((bfd *, nlmNAME(symbol_type) *,
136 asection **, arelent *));
137 /* Write a relocation fixup to abfd. */
138 boolean (*nlm_write_reloc) PARAMS ((bfd *, asection *, arelent *));
139 /* To make objcopy to an i386 NLM work, the i386 backend needs a
140 chance to work over the relocs. This is a bit icky. */
141 boolean (*nlm_mangle_relocs) PARAMS ((bfd *, asection *, PTR data,
143 bfd_size_type count));
146 #define nlm_backend(bfd) \
147 ((struct nlm_backend_data *)((bfd) -> xvec -> backend_data))
148 #define nlm_architecture(bfd) \
149 (nlm_backend(bfd) ? nlm_backend(bfd) -> arch : bfd_arch_unknown)
150 #define nlm_read_reloc_func(bfd) \
151 (nlm_backend(bfd) ? nlm_backend(bfd) -> nlm_read_reloc : 0)
152 #define nlm_write_reloc_func(bfd) \
153 (nlm_backend(bfd) ? nlm_backend(bfd) -> nlm_write_reloc : 0)
154 #define nlm_mangle_relocs_func(bfd) \
155 (nlm_backend(bfd) ? nlm_backend(bfd) -> nlm_mangle_relocs : 0)
157 /* The NLM code, data, and uninitialized sections have no names defined
158 in the NLM, but bfd wants to give them names, so use the traditional
161 #define NLM_CODE_NAME ".text"
162 #define NLM_INITIALIZED_DATA_NAME ".data"
163 #define NLM_UNINITIALIZED_DATA_NAME ".bss"
165 #endif /* _LIBNLM_H_ */