123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169170171172173174175176177178179180181182183184185186187188189190191192193194195196197198199200201202203204205206207208209210211212213214215216217218219220221222223224225226227228229230231232233234235236237238239240241242243244245246247248249250251252253254255256257258259260261262263264265266267268269270271272273274275276277278279280281282283284285286287288289290291292293294295296297298299300301302303304305306307308309310311312313314315316317318319320321322323324325326327328329330331332333334335336337338339340341342343344345346347348 |
- /* BFD ECOFF object file private structure.
- Copyright (C) 1993-2022 Free Software Foundation, Inc.
- Written by Ian Lance Taylor, 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. */
- #include "bfdlink.h"
- #ifndef ECOFF_H
- #include "coff/ecoff.h"
- #endif
- /* This is the backend information kept for ECOFF files. This
- structure is constant for a particular backend. The first element
- is the COFF backend data structure, so that ECOFF targets can use
- the generic COFF code. */
- #define ecoff_backend(abfd) \
- ((struct ecoff_backend_data *) (abfd)->xvec->backend_data)
- struct ecoff_backend_data
- {
- /* COFF backend information. This must be the first field. */
- bfd_coff_backend_data coff;
- /* Supported architecture. */
- enum bfd_architecture arch;
- /* Initial portion of armap string. */
- const char *armap_start;
- /* The page boundary used to align sections in a demand-paged
- executable file. E.g., 0x1000. */
- bfd_vma round;
- /* TRUE if the .rdata section is part of the text segment, as on the
- Alpha. FALSE if .rdata is part of the data segment, as on the
- MIPS. */
- bool rdata_in_text;
- /* Bitsize of constructor entries. */
- unsigned int constructor_bitsize;
- /* Reloc to use for constructor entries. */
- reloc_howto_type *constructor_reloc;
- /* How to swap debugging information. */
- struct ecoff_debug_swap debug_swap;
- /* External reloc size. */
- bfd_size_type external_reloc_size;
- /* Reloc swapping functions. */
- void (*swap_reloc_in) (bfd *, void *, struct internal_reloc *);
- void (*swap_reloc_out) (bfd *, const struct internal_reloc *, void *);
- /* Backend reloc tweaking. */
- void (*adjust_reloc_in)
- (bfd *, const struct internal_reloc *, arelent *);
- void (*adjust_reloc_out)
- (bfd *, const arelent *, struct internal_reloc *);
- /* Relocate section contents while linking. */
- bool (*relocate_section)
- (bfd *, struct bfd_link_info *, bfd *, asection *, bfd_byte *, void *);
- /* Do final adjustments to filehdr and aouthdr. */
- bool (*adjust_headers)
- (bfd *, struct internal_filehdr *, struct internal_aouthdr *);
- /* Read an element from an archive at a given file position. This
- is needed because OSF/1 3.2 uses a weird archive format. */
- bfd *(*get_elt_at_filepos) (bfd *, file_ptr, struct bfd_link_info *);
- };
- /* ECOFF targets don't support COFF long section names, so this
- macro is provided to use as an initialiser for the related
- members of the embedded bfd_coff_backend_data struct. */
- #define ECOFF_NO_LONG_SECTION_NAMES (false), _bfd_ecoff_no_long_sections
- /* This is the target specific information kept for ECOFF files. */
- #define ecoff_data(abfd) ((abfd)->tdata.ecoff_obj_data)
- typedef struct ecoff_tdata
- {
- /* The reloc file position, set by
- ecoff_compute_section_file_positions. */
- file_ptr reloc_filepos;
- /* The symbol table file position, set by _bfd_ecoff_mkobject_hook. */
- file_ptr sym_filepos;
- /* The start and end of the text segment. Only valid for an
- existing file, not for one we are creating. */
- unsigned long text_start;
- unsigned long text_end;
- /* The cached gp value. This is used when relocating. */
- bfd_vma gp;
- /* The maximum size of objects to optimize using gp. This is
- typically set by the -G option to the compiler, assembler or
- linker. */
- unsigned int gp_size;
- /* The register masks. When linking, all the masks found in the
- input files are combined into the masks of the output file.
- These are not all used for all targets, but that's OK, because
- the relevant ones are the only ones swapped in and out. */
- unsigned long gprmask;
- unsigned long fprmask;
- unsigned long cprmask[4];
- /* The ECOFF symbolic debugging information. */
- struct ecoff_debug_info debug_info;
- /* The unswapped ECOFF symbolic information. */
- void * raw_syments;
- /* The canonical BFD symbols. */
- struct ecoff_symbol_struct *canonical_symbols;
- /* A mapping from external symbol numbers to entries in the linker
- hash table, used when linking. */
- struct ecoff_link_hash_entry **sym_hashes;
- /* A mapping from reloc symbol indices to sections, used when
- linking. */
- asection **symndx_to_section;
- /* TRUE if this BFD was written by the backend linker. */
- bool linker;
- /* TRUE if a warning that multiple global pointer values are
- needed in the output binary was issued already. */
- bool issued_multiple_gp_warning;
- /* Used by find_nearest_line entry point. The structure could be
- included directly in this one, but there's no point to wasting
- the memory just for the infrequently called find_nearest_line. */
- struct ecoff_find_line *find_line_info;
- /* Whether the .rdata section is in the text segment for this
- particular ECOFF file. This is not valid until
- ecoff_compute_section_file_positions is called. */
- bool rdata_in_text;
- } ecoff_data_type;
- /* Each canonical asymbol really looks like this. */
- typedef struct ecoff_symbol_struct
- {
- /* The actual symbol which the rest of BFD works with */
- asymbol symbol;
- /* The fdr for this symbol. */
- FDR *fdr;
- /* TRUE if this is a local symbol rather than an external one. */
- bool local;
- /* A pointer to the unswapped hidden information for this symbol.
- This is either a struct sym_ext or a struct ext_ext, depending on
- the value of the local field above. */
- void * native;
- } ecoff_symbol_type;
- /* We take the address of the first element of an asymbol to ensure that the
- macro is only ever applied to an asymbol. */
- #define ecoffsymbol(asymbol) ((ecoff_symbol_type *) (&((asymbol)->the_bfd)))
- /* We need to save the index of an external symbol when we write it
- out so that can set the symbol index correctly when we write out
- the relocs. */
- #define ecoff_get_sym_index(symbol) ((symbol)->udata.i)
- #define ecoff_set_sym_index(symbol, idx) ((symbol)->udata.i = (idx))
- /* A pointer to this structure is put in the used_by_bfd pointer of
- a section to keep track of any per-section data.
- The user_by_bfd pointer will be NULL if the information was not
- needed. */
- struct ecoff_section_tdata
- {
- /* When producing an executable (i.e., final, non-relocatable link)
- on the Alpha, we may need to use multiple global pointer values
- to span the entire .lita section. In essence, we allow each
- input .lita section to have its own gp value. To support this,
- we need to keep track of the gp values that we picked for each
- input .lita section . */
- bfd_vma gp;
- };
- /* An accessor macro for the ecoff_section_tdata structure. */
- #define ecoff_section_data(abfd, sec) \
- ((struct ecoff_section_tdata *) (sec)->used_by_bfd)
- /* ECOFF linker hash table entries. */
- struct ecoff_link_hash_entry
- {
- struct bfd_link_hash_entry root;
- /* Symbol index in output file. */
- long indx;
- /* BFD that ext field value came from. */
- bfd *abfd;
- /* ECOFF external symbol information. */
- EXTR esym;
- /* Nonzero if this symbol has been written out. */
- char written;
- /* Nonzero if this symbol was referred to as small undefined. */
- char small;
- };
- /* ECOFF linker hash table. */
- struct ecoff_link_hash_table
- {
- struct bfd_link_hash_table root;
- };
- /* Make an ECOFF object. */
- extern bool _bfd_ecoff_mkobject (bfd *);
- /* Read in the ECOFF symbolic debugging information. */
- extern bool _bfd_ecoff_slurp_symbolic_info
- (bfd *, asection *, struct ecoff_debug_info *);
- /* Generic ECOFF BFD backend vectors. */
- extern bool _bfd_ecoff_write_object_contents (bfd *);
- #define _bfd_ecoff_close_and_cleanup _bfd_generic_close_and_cleanup
- #define _bfd_ecoff_bfd_free_cached_info _bfd_generic_bfd_free_cached_info
- extern bool _bfd_ecoff_new_section_hook
- (bfd *, asection *);
- extern bool _bfd_ecoff_get_section_contents
- (bfd *, asection *, void * location, file_ptr, bfd_size_type);
- #define _bfd_ecoff_bfd_link_split_section _bfd_generic_link_split_section
- #define _bfd_ecoff_bfd_link_check_relocs _bfd_generic_link_check_relocs
- extern bool _bfd_ecoff_bfd_copy_private_bfd_data
- (bfd *, bfd *);
- #define _bfd_ecoff_bfd_copy_private_section_data \
- _bfd_generic_bfd_copy_private_section_data
- #define _bfd_ecoff_bfd_copy_private_symbol_data \
- _bfd_generic_bfd_copy_private_symbol_data
- #define _bfd_ecoff_bfd_copy_private_header_data \
- _bfd_generic_bfd_copy_private_header_data
- #define _bfd_ecoff_bfd_print_private_bfd_data \
- _bfd_generic_bfd_print_private_bfd_data
- #define _bfd_ecoff_bfd_merge_private_bfd_data \
- _bfd_generic_bfd_merge_private_bfd_data
- #define _bfd_ecoff_bfd_set_private_flags _bfd_generic_bfd_set_private_flags
- extern bool _bfd_ecoff_slurp_armap (bfd *);
- #define _bfd_ecoff_slurp_extended_name_table _bfd_slurp_extended_name_table
- #define _bfd_ecoff_construct_extended_name_table \
- _bfd_archive_bsd_construct_extended_name_table
- #define _bfd_ecoff_truncate_arname bfd_dont_truncate_arname
- extern bool _bfd_ecoff_write_armap
- (bfd *, unsigned int, struct orl *, unsigned int, int);
- #define _bfd_ecoff_read_ar_hdr _bfd_generic_read_ar_hdr
- #define _bfd_ecoff_write_ar_hdr _bfd_generic_write_ar_hdr
- #define _bfd_ecoff_openr_next_archived_file \
- bfd_generic_openr_next_archived_file
- #define _bfd_ecoff_get_elt_at_index _bfd_generic_get_elt_at_index
- #define _bfd_ecoff_generic_stat_arch_elt bfd_generic_stat_arch_elt
- #define _bfd_ecoff_update_armap_timestamp _bfd_bool_bfd_true
- #define _bfd_ecoff_bfd_is_target_special_symbol _bfd_bool_bfd_asymbol_false
- extern long _bfd_ecoff_get_symtab_upper_bound (bfd *);
- extern long _bfd_ecoff_canonicalize_symtab (bfd *, asymbol **);
- extern asymbol *_bfd_ecoff_make_empty_symbol (bfd *);
- extern void _bfd_ecoff_print_symbol
- (bfd *, void *, asymbol *, bfd_print_symbol_type);
- extern void _bfd_ecoff_get_symbol_info
- (bfd *, asymbol *, symbol_info *);
- #define _bfd_ecoff_get_symbol_version_string \
- _bfd_nosymbols_get_symbol_version_string
- extern bool _bfd_ecoff_bfd_is_local_label_name
- (bfd *, const char *);
- #define _bfd_ecoff_get_lineno _bfd_nosymbols_get_lineno
- extern bool _bfd_ecoff_find_nearest_line
- (bfd *, asymbol **, asection *, bfd_vma,
- const char **, const char **, unsigned int *, unsigned int *);
- #define _bfd_ecoff_find_line _bfd_nosymbols_find_line
- #define _bfd_ecoff_bfd_make_debug_symbol _bfd_nosymbols_bfd_make_debug_symbol
- #define _bfd_ecoff_read_minisymbols _bfd_generic_read_minisymbols
- #define _bfd_ecoff_minisymbol_to_symbol _bfd_generic_minisymbol_to_symbol
- #define _bfd_ecoff_find_inliner_info _bfd_nosymbols_find_inliner_info
- #define _bfd_ecoff_get_reloc_upper_bound coff_get_reloc_upper_bound
- extern long _bfd_ecoff_canonicalize_reloc
- (bfd *, asection *, arelent **, asymbol **);
- /* ecoff_bfd_reloc_type_lookup defined by backend. */
- extern bool _bfd_ecoff_set_arch_mach
- (bfd *, enum bfd_architecture, unsigned long);
- extern bool _bfd_ecoff_set_section_contents
- (bfd *, asection *, const void * location, file_ptr, bfd_size_type);
- extern int _bfd_ecoff_sizeof_headers (bfd *, struct bfd_link_info *);
- /* ecoff_bfd_get_relocated_section_contents defined by backend. */
- /* ecoff_bfd_relax_section defined by backend. */
- extern struct bfd_link_hash_table *_bfd_ecoff_bfd_link_hash_table_create
- (bfd *);
- extern bool _bfd_ecoff_bfd_link_add_symbols
- (bfd *, struct bfd_link_info *);
- #define _bfd_ecoff_bfd_link_just_syms _bfd_generic_link_just_syms
- #define _bfd_ecoff_bfd_copy_link_hash_symbol_type \
- _bfd_generic_copy_link_hash_symbol_type
- extern bool _bfd_ecoff_bfd_final_link
- (bfd *, struct bfd_link_info *);
- /* Hook functions for the generic COFF section reading code. */
- extern void * _bfd_ecoff_mkobject_hook (bfd *, void *, void *);
- extern void _bfd_ecoff_set_alignment_hook
- (bfd *, asection *, void *);
- extern bool _bfd_ecoff_set_arch_mach_hook
- (bfd *, void *);
- extern bool _bfd_ecoff_no_long_sections
- (bfd *abfd, int enable);
- extern bool _bfd_ecoff_styp_to_sec_flags
- (bfd *, void *, const char *, asection *, flagword *);
- extern bool _bfd_ecoff_slurp_symbol_table (bfd *);
- /* ECOFF auxiliary information swapping routines. These are the same
- for all ECOFF targets, so they are defined in ecofflink.c. */
- extern void _bfd_ecoff_swap_tir_in
- (int, const struct tir_ext *, TIR *);
- extern void _bfd_ecoff_swap_tir_out
- (int, const TIR *, struct tir_ext *);
- extern void _bfd_ecoff_swap_rndx_in
- (int, const struct rndx_ext *, RNDXR *);
- extern void _bfd_ecoff_swap_rndx_out
- (int, const RNDXR *, struct rndx_ext *);
|