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-/* BFD back-end data structures for NLM (NetWare Loadable Modules) files.
- Copyright (C) 1993-2018 Free Software Foundation, Inc.
- Written by Cygnus Support.
-
- This file is part of BFD, the Binary File Descriptor library.
-
- This program is free software; you can redistribute it and/or modify
- it under the terms of the GNU General Public License as published by
- the Free Software Foundation; either version 3 of the License, or
- (at your option) any later version.
-
- This program is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- GNU General Public License for more details.
-
- You should have received a copy of the GNU General Public License
- along with this program; if not, write to the Free Software
- Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
- MA 02110-1301, USA. */
-
-#ifndef _LIBNLM_H_
-#define _LIBNLM_H_ 1
-
-#ifdef ARCH_SIZE
-# define NLM_ARCH_SIZE ARCH_SIZE
-#endif
-#include "nlm/common.h"
-#include "nlm/internal.h"
-#include "nlm/external.h"
-
-/* A reloc for an imported NLM symbol. Normal relocs are associated
- with sections, and include a symbol. These relocs are associated
- with (undefined) symbols, and include a section. */
-
-struct nlm_relent
-{
- /* Section of reloc. */
- asection *section;
- /* Reloc info (sym_ptr_ptr field set only when canonicalized). */
- arelent reloc;
-};
-
-/* Information we keep for an NLM symbol. */
-
-typedef struct
-{
- /* BFD symbol. */
- asymbol symbol;
- /* Number of reloc entries for imported symbol. */
- bfd_size_type rcnt;
- /* Array of reloc information for imported symbol. */
- struct nlm_relent *relocs;
-} nlmNAME(symbol_type);
-
-extern bfd_boolean nlm_mkobject (bfd *);
-extern bfd_boolean nlm_set_arch_mach (bfd *, enum bfd_architecture, unsigned long);
-extern void nlmNAME (get_symbol_info) (bfd *, asymbol *, symbol_info *);
-extern long nlmNAME (get_symtab_upper_bound)(bfd *);
-extern long nlmNAME (canonicalize_symtab) (bfd *, asymbol **);
-extern asymbol * nlmNAME (make_empty_symbol) (bfd *);
-extern void nlmNAME (print_symbol) (bfd *, void *, asymbol *, bfd_print_symbol_type);
-extern long nlmNAME (get_reloc_upper_bound) (bfd *, asection *);
-extern long nlmNAME (canonicalize_reloc) (bfd *, asection *, arelent **, asymbol **);
-extern const bfd_target * nlmNAME (object_p) (bfd *);
-extern bfd_boolean nlmNAME (set_arch_mach) (bfd *, enum bfd_architecture, unsigned long);
-extern bfd_boolean nlmNAME (set_section_contents) (bfd *, asection *, const void *, file_ptr, bfd_size_type);
-extern bfd_boolean nlmNAME (write_object_contents) (bfd *);
-
-/* Some private data is stashed away for future use using the tdata pointer
- in the bfd structure. */
-
-struct nlm_obj_tdata
-{
- /* Actual data, but ref like ptr */
- Nlm_Internal_Fixed_Header nlm_fixed_hdr[1];
- Nlm_Internal_Variable_Header nlm_variable_hdr[1];
- Nlm_Internal_Version_Header nlm_version_hdr[1];
- Nlm_Internal_Copyright_Header nlm_copyright_hdr[1];
- Nlm_Internal_Extended_Header nlm_extended_hdr[1];
- Nlm_Internal_Custom_Header nlm_custom_hdr[1];
- Nlm_Internal_Cygnus_Ext_Header nlm_cygnus_ext_hdr[1];
- /* BFD NLM symbols. */
- nlmNAME (symbol_type) * nlm_symbols;
- /* Lowest text and data VMA values. */
- bfd_vma nlm_text_low;
- bfd_vma nlm_data_low;
- /* Caches for data read from object file. */
- arelent * nlm_reloc_fixups;
- asection ** nlm_reloc_fixup_secs;
- /* Backend specific information. This should probably be a pointer,
- but that would require yet another entry point to initialize the
- structure. */
- union
- {
- struct /* Alpha backend information. */
- {
- bfd_vma gp; /* GP value. */
- bfd_vma lita_address; /* .lita section address. */
- bfd_size_type lita_size; /* .lita section size. */
- }
- alpha_backend_data;
- }
- backend_data;
-};
-
-#define nlm_tdata(bfd) ((bfd) -> tdata.nlm_obj_data)
-#define nlm_fixed_header(bfd) (nlm_tdata (bfd) -> nlm_fixed_hdr)
-#define nlm_variable_header(bfd) (nlm_tdata (bfd) -> nlm_variable_hdr)
-#define nlm_version_header(bfd) (nlm_tdata (bfd) -> nlm_version_hdr)
-#define nlm_copyright_header(bfd) (nlm_tdata (bfd) -> nlm_copyright_hdr)
-#define nlm_extended_header(bfd) (nlm_tdata (bfd) -> nlm_extended_hdr)
-#define nlm_custom_header(bfd) (nlm_tdata (bfd) -> nlm_custom_hdr)
-#define nlm_cygnus_ext_header(bfd) (nlm_tdata (bfd) -> nlm_cygnus_ext_hdr)
-#define nlm_get_symbols(bfd) (nlm_tdata (bfd) -> nlm_symbols)
-#define nlm_set_symbols(bfd, p) (nlm_tdata (bfd) -> nlm_symbols = (p))
-#define nlm_set_text_low(bfd, i) (nlm_tdata (bfd) -> nlm_text_low = (i))
-#define nlm_get_text_low(bfd) (nlm_tdata (bfd) -> nlm_text_low)
-#define nlm_set_data_low(bfd, i) (nlm_tdata (bfd) -> nlm_data_low = (i))
-#define nlm_get_data_low(bfd) (nlm_tdata (bfd) -> nlm_data_low)
-#define nlm_relocation_fixups(bfd) (nlm_tdata (bfd) -> nlm_reloc_fixups)
-#define nlm_relocation_fixup_secs(bfd) (nlm_tdata (bfd) -> nlm_reloc_fixup_secs)
-#define nlm_alpha_backend_data(bfd) (&nlm_tdata (bfd) -> backend_data.alpha_backend_data)
-
-/* This is used when writing out the external relocs. */
-
-struct reloc_and_sec
-{
- arelent *rel;
- asection *sec;
-};
-
-/* We store some function pointer in the backend structure. This lets
- different NLM targets share most of the same code, while providing
- slightly different code where necessary. */
-
-struct nlm_backend_data
-{
- /* Signature for this backend. */
- char signature[NLM_SIGNATURE_SIZE];
- /* Size of the fixed header. */
- bfd_size_type fixed_header_size;
- /* Size of optional prefix for this backend. Some backend may
- require this to be a function, but so far a constant is OK. This
- is for a prefix which precedes the standard NLM fixed header. */
- bfd_size_type optional_prefix_size;
- /* Architecture. */
- enum bfd_architecture arch;
- /* Machine. */
- unsigned int mach;
- /* Some NLM formats do not use the uninitialized data section, so
- all uninitialized data must be put into the regular data section
- instead. */
- bfd_boolean no_uninitialized_data;
- /* Some NLM formats have a prefix on the file. If this function is
- not NULL, it will be called by nlm_object_p. It should return
- TRUE if this file could match this format, and it should leave
- the BFD such that a bfd_bread will pick up the fixed header. */
- bfd_boolean (*nlm_backend_object_p) (bfd *);
- /* Write out the prefix. This function may be NULL. This must
- write out the same number of bytes as is in the field
- optional_prefix_size. */
- bfd_boolean (*nlm_write_prefix) (bfd *);
- /* Read a relocation fixup from abfd. The reloc information is
- machine specific. The second argument is the symbol if this is
- an import, or NULL if this is a reloc fixup. This function
- should set the third argument to the section which the reloc
- belongs in, and the fourth argument to the reloc itself; it does
- not need to fill in the sym_ptr_ptr field for a reloc against an
- import symbol. */
- bfd_boolean (*nlm_read_reloc) (bfd *, nlmNAME (symbol_type) *, asection **, arelent *);
- /* To make objcopy to an i386 NLM work, the i386 backend needs a
- chance to work over the relocs. This is a bit icky. */
- bfd_boolean (*nlm_mangle_relocs) (bfd *, asection *, const void *, bfd_vma, bfd_size_type);
- /* Read an import record from abfd. It would be nice if this
- were in a machine-dependent format, but it doesn't seem to be. */
- bfd_boolean (*nlm_read_import) (bfd *, nlmNAME (symbol_type) *);
- /* Write an import record to abfd. */
- bfd_boolean (*nlm_write_import) (bfd *, asection *, arelent *);
- /* Set the section for a public symbol. This may be NULL, in which
- case a default method will be used. */
- bfd_boolean (*nlm_set_public_section) (bfd *, nlmNAME (symbol_type) *);
- /* Get the offset to write out for a public symbol. This may be
- NULL, in which case a default method will be used. */
- bfd_vma (*nlm_get_public_offset) (bfd *, asymbol *);
- /* Swap the fixed header in and out */
- void (*nlm_swap_fhdr_in) (bfd *, void *, Nlm_Internal_Fixed_Header *);
- void (*nlm_swap_fhdr_out) (bfd *, struct nlm_internal_fixed_header *, void *);
- /* Write out an external reference. */
- bfd_boolean (*nlm_write_external) (bfd *, bfd_size_type, asymbol *, struct reloc_and_sec *);
- bfd_boolean (*nlm_write_export) (bfd *, asymbol *, bfd_vma);
-};
-
-#define nlm_backend(bfd) ((struct nlm_backend_data *)((bfd) -> xvec -> backend_data))
-#define nlm_signature(bfd) (nlm_backend (bfd) -> signature)
-#define nlm_fixed_header_size(bfd) (nlm_backend (bfd) -> fixed_header_size)
-#define nlm_optional_prefix_size(bfd) (nlm_backend (bfd) -> optional_prefix_size)
-#define nlm_architecture(bfd) (nlm_backend (bfd) -> arch)
-#define nlm_machine(bfd) (nlm_backend (bfd) -> mach)
-#define nlm_no_uninitialized_data(bfd) (nlm_backend (bfd) -> no_uninitialized_data)
-#define nlm_backend_object_p_func(bfd) (nlm_backend (bfd) -> nlm_backend_object_p)
-#define nlm_write_prefix_func(bfd) (nlm_backend (bfd) -> nlm_write_prefix)
-#define nlm_read_reloc_func(bfd) (nlm_backend (bfd) -> nlm_read_reloc)
-#define nlm_mangle_relocs_func(bfd) (nlm_backend (bfd) -> nlm_mangle_relocs)
-#define nlm_read_import_func(bfd) (nlm_backend (bfd) -> nlm_read_import)
-#define nlm_write_import_func(bfd) (nlm_backend (bfd) -> nlm_write_import)
-#define nlm_set_public_section_func(bfd) (nlm_backend (bfd) -> nlm_set_public_section)
-#define nlm_get_public_offset_func(bfd) (nlm_backend (bfd) -> nlm_get_public_offset)
-#define nlm_swap_fixed_header_in_func(bfd) (nlm_backend (bfd) -> nlm_swap_fhdr_in)
-#define nlm_swap_fixed_header_out_func(bfd)(nlm_backend (bfd) -> nlm_swap_fhdr_out)
-#define nlm_write_external_func(bfd) (nlm_backend (bfd) -> nlm_write_external)
-#define nlm_write_export_func(bfd) (nlm_backend (bfd) -> nlm_write_export)
-
-/* The NLM code, data, and uninitialized sections have no names defined
- in the NLM, but bfd wants to give them names, so use the traditional
- UNIX names. */
-
-#define NLM_CODE_NAME ".text"
-#define NLM_INITIALIZED_DATA_NAME ".data"
-#define NLM_UNINITIALIZED_DATA_NAME ".bss"
-
-#endif /* _LIBNLM_H_ */