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Diffstat (limited to 'binutils-2.25/bfd/libnlm.h')
| -rw-r--r-- | binutils-2.25/bfd/libnlm.h | 223 |
1 files changed, 223 insertions, 0 deletions
diff --git a/binutils-2.25/bfd/libnlm.h b/binutils-2.25/bfd/libnlm.h new file mode 100644 index 00000000..4a4939ee --- /dev/null +++ b/binutils-2.25/bfd/libnlm.h @@ -0,0 +1,223 @@ +/* BFD back-end data structures for NLM (NetWare Loadable Modules) files. + Copyright 1993, 1994, 2001, 2002, 2003, 2005, 2007 + 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_ */ |