166 lines
6.4 KiB
C
166 lines
6.4 KiB
C
/* BFD back-end data structures for NLM (NetWare Loadable Modules) files.
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Copyright (C) 1993 Free Software Foundation, Inc.
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Written by Cygnus Support.
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This file is part of BFD, the Binary File Descriptor library.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
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#ifndef _LIBNLM_H_
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#define _LIBNLM_H_ 1
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#ifdef ARCH_SIZE
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# define NLM_ARCH_SIZE ARCH_SIZE
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#endif
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#include "nlm/common.h"
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#include "nlm/internal.h"
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#include "nlm/external.h"
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/* A reloc for an imported NLM symbol. Normal relocs are associated
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with sections, and include a symbol. These relocs are associated
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with (undefined) symbols, and include a section. */
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struct nlm_relent
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{
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/* Section of reloc. */
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asection *section;
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/* Reloc info (sym_ptr_ptr field set only when canonicalized). */
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arelent reloc;
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};
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/* Information we keep for an NLM symbol. */
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typedef struct
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{
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/* BFD symbol. */
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asymbol symbol;
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/* Number of reloc entries for imported symbol. */
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bfd_size_type rcnt;
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/* Array of reloc information for imported symbol. */
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struct nlm_relent *relocs;
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} nlmNAME(symbol_type);
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extern boolean nlm_mkobject PARAMS ((bfd *));
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extern boolean nlm_set_arch_mach PARAMS ((bfd *, enum bfd_architecture,
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unsigned long));
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extern void nlmNAME(get_symbol_info)
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PARAMS ((bfd *, asymbol *, symbol_info *));
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extern unsigned int nlmNAME(get_symtab_upper_bound)
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PARAMS ((bfd *));
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extern unsigned int nlmNAME(get_symtab)
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PARAMS ((bfd *, asymbol **));
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extern asymbol *nlmNAME(make_empty_symbol)
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PARAMS ((bfd *));
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extern void nlmNAME(print_symbol)
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PARAMS ((bfd *, PTR, asymbol *, bfd_print_symbol_type));
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extern unsigned int nlmNAME(get_reloc_upper_bound)
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PARAMS ((bfd *, asection *));
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extern unsigned int nlmNAME(canonicalize_reloc)
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PARAMS ((bfd *, asection *, arelent **, asymbol **));
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extern bfd_target *nlmNAME(object_p)
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PARAMS ((bfd *));
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extern boolean nlmNAME(set_arch_mach)
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PARAMS ((bfd *, enum bfd_architecture, unsigned long));
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extern boolean nlmNAME(set_section_contents)
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PARAMS ((bfd *, asection *, PTR, file_ptr, bfd_size_type));
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extern boolean nlmNAME(write_object_contents)
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PARAMS ((bfd *));
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/* Some private data is stashed away for future use using the tdata pointer
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in the bfd structure. */
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struct nlm_obj_tdata
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{
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/* Actual data, but ref like ptr */
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Nlm_Internal_Fixed_Header nlm_fixed_hdr[1];
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Nlm_Internal_Variable_Header nlm_variable_hdr[1];
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Nlm_Internal_Version_Header nlm_version_hdr[1];
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Nlm_Internal_Copyright_Header nlm_copyright_hdr[1];
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Nlm_Internal_Extended_Header nlm_extended_hdr[1];
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Nlm_Internal_Custom_Header nlm_custom_hdr[1];
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/* BFD NLM symbols. */
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nlmNAME(symbol_type) *nlm_symbols;
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/* Lowest text and data VMA values. */
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bfd_vma nlm_text_low;
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bfd_vma nlm_data_low;
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/* Caches for data read from object file. */
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arelent * nlm_reloc_fixups;
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asection ** nlm_reloc_fixup_secs;
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};
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#define nlm_tdata(bfd) ((bfd) -> tdata.nlm_obj_data)
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#define nlm_fixed_header(bfd) (nlm_tdata(bfd) -> nlm_fixed_hdr)
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#define nlm_variable_header(bfd) (nlm_tdata(bfd) -> nlm_variable_hdr)
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#define nlm_version_header(bfd) (nlm_tdata(bfd) -> nlm_version_hdr)
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#define nlm_copyright_header(bfd) (nlm_tdata(bfd) -> nlm_copyright_hdr)
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#define nlm_extended_header(bfd) (nlm_tdata(bfd) -> nlm_extended_hdr)
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#define nlm_custom_header(bfd) (nlm_tdata(bfd) -> nlm_custom_hdr)
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#define nlm_get_symbols(bfd) (nlm_tdata(bfd) -> nlm_symbols)
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#define nlm_set_symbols(bfd, p) (nlm_tdata(bfd) -> nlm_symbols = (p))
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#define nlm_set_text_low(bfd, i) (nlm_tdata(bfd) -> nlm_text_low = (i))
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#define nlm_get_text_low(bfd) (nlm_tdata(bfd) -> nlm_text_low)
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#define nlm_set_data_low(bfd, i) (nlm_tdata(bfd) -> nlm_data_low = (i))
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#define nlm_get_data_low(bfd) (nlm_tdata(bfd) -> nlm_data_low)
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#define nlm_relocation_fixups(bfd) (nlm_tdata(bfd) -> nlm_reloc_fixups)
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#define nlm_relocation_fixup_secs(bfd) (nlm_tdata(bfd)->nlm_reloc_fixup_secs)
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/* We store some function pointer in the backend structure. This lets
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different NLM targets share most of the same code, while providing
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slightly different code where necessary. */
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struct nlm_backend_data
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{
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/* Machine architecture. */
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enum bfd_architecture arch;
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/* Read a relocation fixup from abfd. The reloc information is
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machine specific. The second argument is the symbol if this is
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an import, or NULL if this is a reloc fixup. This function
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should set the third argument to the section which the reloc
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belongs in, and the fourth argument to the reloc itself; it does
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not need to fill in the sym_ptr_ptr field for a reloc against an
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import symbol. */
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boolean (*nlm_read_reloc) PARAMS ((bfd *, nlmNAME(symbol_type) *,
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asection **, arelent *));
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/* Write a relocation fixup to abfd. */
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boolean (*nlm_write_reloc) PARAMS ((bfd *, asection *, arelent *));
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/* To make objcopy to an i386 NLM work, the i386 backend needs a
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chance to work over the relocs. This is a bit icky. */
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boolean (*nlm_mangle_relocs) PARAMS ((bfd *, asection *, PTR data,
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bfd_vma offset,
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bfd_size_type count));
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};
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#define nlm_backend(bfd) \
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((struct nlm_backend_data *)((bfd) -> xvec -> backend_data))
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#define nlm_architecture(bfd) \
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(nlm_backend(bfd) ? nlm_backend(bfd) -> arch : bfd_arch_unknown)
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#define nlm_read_reloc_func(bfd) \
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(nlm_backend(bfd) ? nlm_backend(bfd) -> nlm_read_reloc : 0)
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#define nlm_write_reloc_func(bfd) \
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(nlm_backend(bfd) ? nlm_backend(bfd) -> nlm_write_reloc : 0)
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#define nlm_mangle_relocs_func(bfd) \
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(nlm_backend(bfd) ? nlm_backend(bfd) -> nlm_mangle_relocs : 0)
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/* The NLM code, data, and uninitialized sections have no names defined
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in the NLM, but bfd wants to give them names, so use the traditional
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UNIX names. */
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#define NLM_CODE_NAME ".text"
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#define NLM_INITIALIZED_DATA_NAME ".data"
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#define NLM_UNINITIALIZED_DATA_NAME ".bss"
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#endif /* _LIBNLM_H_ */
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