mirror of
https://sourceware.org/git/binutils-gdb.git
synced 2024-12-15 04:31:49 +08:00
256 lines
10 KiB
C
256 lines
10 KiB
C
|
/* BFD ECOFF object file private structure.
|
||
|
|
Copyright (C) 1993 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 2 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., 675 Mass Ave, Cambridge, MA 02139, USA. */
|
||
|
|
|
||
|
|
/* This is the backend information kept for ECOFF files. This
|
||
|
|
structure is constant for a particular backend. ECOFF already
|
||
|
|
keeps a bfd_coff_backend_data structure in the bfd_target
|
||
|
|
backend_data field, so a pointer to this backend structure is kept
|
||
|
|
in the tdata field. */
|
||
|
|
|
||
|
|
#define ecoff_backend(abfd) (ecoff_data (abfd)->backend_data)
|
||
|
|
|
||
|
|
struct ecoff_backend_data
|
||
|
|
{
|
||
|
|
/* Supported architecture. */
|
||
|
|
enum bfd_architecture arch;
|
||
|
|
/* Big endian magic number. */
|
||
|
|
int big_magic;
|
||
|
|
/* Little endian magic number. */
|
||
|
|
int little_magic;
|
||
|
|
/* Alignment of debugging information. E.g., 4. */
|
||
|
|
bfd_size_type debug_align;
|
||
|
|
/* The page boundary used to align sections in a demand-paged
|
||
|
|
executable file. E.g., 0x1000. */
|
||
|
|
bfd_vma round;
|
||
|
|
/* Bitsize of constructor entries. */
|
||
|
|
unsigned int constructor_bitsize;
|
||
|
|
/* Sizes of external symbolic information. */
|
||
|
|
bfd_size_type external_hdr_size;
|
||
|
|
bfd_size_type external_dnr_size;
|
||
|
|
bfd_size_type external_pdr_size;
|
||
|
|
bfd_size_type external_sym_size;
|
||
|
|
bfd_size_type external_opt_size;
|
||
|
|
bfd_size_type external_fdr_size;
|
||
|
|
bfd_size_type external_rfd_size;
|
||
|
|
bfd_size_type external_ext_size;
|
||
|
|
/* Functions to swap in external symbolic data. */
|
||
|
|
void (*swap_hdr_in) PARAMS ((bfd *, PTR, HDRR *));
|
||
|
|
void (*swap_dnr_in) PARAMS ((bfd *, PTR, DNR *));
|
||
|
|
void (*swap_pdr_in) PARAMS ((bfd *, PTR, PDR *));
|
||
|
|
void (*swap_sym_in) PARAMS ((bfd *, PTR, SYMR *));
|
||
|
|
void (*swap_opt_in) PARAMS ((bfd *, PTR, OPTR *));
|
||
|
|
void (*swap_fdr_in) PARAMS ((bfd *, PTR, FDR *));
|
||
|
|
void (*swap_rfd_in) PARAMS ((bfd *, PTR, RFDT *));
|
||
|
|
void (*swap_ext_in) PARAMS ((bfd *, PTR, EXTR *));
|
||
|
|
/* Functions to swap out external symbolic data. */
|
||
|
|
void (*swap_hdr_out) PARAMS ((bfd *, const HDRR *, PTR));
|
||
|
|
void (*swap_dnr_out) PARAMS ((bfd *, const DNR *, PTR));
|
||
|
|
void (*swap_pdr_out) PARAMS ((bfd *, const PDR *, PTR));
|
||
|
|
void (*swap_sym_out) PARAMS ((bfd *, const SYMR *, PTR));
|
||
|
|
void (*swap_opt_out) PARAMS ((bfd *, const OPTR *, PTR));
|
||
|
|
void (*swap_fdr_out) PARAMS ((bfd *, const FDR *, PTR));
|
||
|
|
void (*swap_rfd_out) PARAMS ((bfd *, const RFDT *, PTR));
|
||
|
|
void (*swap_ext_out) PARAMS ((bfd *, const EXTR *, PTR));
|
||
|
|
/* It so happens that the auxiliary type information has the same
|
||
|
|
type and format for all known ECOFF targets. I don't see any
|
||
|
|
reason that that should change, so at least for now the auxiliary
|
||
|
|
swapping information is not in this table. */
|
||
|
|
/* External reloc size. */
|
||
|
|
bfd_size_type external_reloc_size;
|
||
|
|
/* Reloc swapping functions. */
|
||
|
|
void (*swap_reloc_in) PARAMS ((bfd *, PTR, struct internal_reloc *));
|
||
|
|
void (*swap_reloc_out) PARAMS ((bfd *, const struct internal_reloc *, PTR));
|
||
|
|
};
|
||
|
|
|
||
|
|
/* This is the target specific information kept for ECOFF files. */
|
||
|
|
|
||
|
|
#define ecoff_data(abfd) ((abfd)->tdata.ecoff_obj_data)
|
||
|
|
|
||
|
|
typedef struct ecoff_tdata
|
||
|
|
{
|
||
|
|
/* Constant backend information. */
|
||
|
|
const struct ecoff_backend_data *backend_data;
|
||
|
|
|
||
|
|
/* The reloc file position, set by
|
||
|
|
ecoff_compute_section_file_positions. */
|
||
|
|
file_ptr reloc_filepos;
|
||
|
|
|
||
|
|
/* The symbol table file position, set by 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. */
|
||
|
|
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. */
|
||
|
|
unsigned long gprmask;
|
||
|
|
unsigned long cprmask[4];
|
||
|
|
|
||
|
|
/* The size of the unswapped ECOFF symbolic information. */
|
||
|
|
bfd_size_type raw_size;
|
||
|
|
|
||
|
|
/* The unswapped ECOFF symbolic information. */
|
||
|
|
PTR raw_syments;
|
||
|
|
|
||
|
|
/* The swapped ECOFF symbolic header. */
|
||
|
|
HDRR symbolic_header;
|
||
|
|
|
||
|
|
/* Pointers to the unswapped symbolic information. */
|
||
|
|
unsigned char *line;
|
||
|
|
PTR external_dnr; /* struct dnr_ext */
|
||
|
|
PTR external_pdr; /* struct pdr_ext */
|
||
|
|
PTR external_sym; /* struct sym_ext */
|
||
|
|
PTR external_opt; /* struct opt_ext */
|
||
|
|
union aux_ext *external_aux;
|
||
|
|
char *ss;
|
||
|
|
char *ssext;
|
||
|
|
PTR external_fdr; /* struct fdr_ext */
|
||
|
|
PTR external_rfd; /* struct rfd_ext */
|
||
|
|
PTR external_ext; /* struct ext_ext */
|
||
|
|
|
||
|
|
/* The swapped FDR information. */
|
||
|
|
FDR *fdr;
|
||
|
|
|
||
|
|
/* The FDR index. This is set for an input BFD to a link so that
|
||
|
|
the external symbols can set their FDR index correctly. */
|
||
|
|
unsigned int ifdbase;
|
||
|
|
|
||
|
|
/* The canonical BFD symbols. */
|
||
|
|
struct ecoff_symbol_struct *canonical_symbols;
|
||
|
|
|
||
|
|
} 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. */
|
||
|
|
boolean 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. */
|
||
|
|
PTR native;
|
||
|
|
} ecoff_symbol_type;
|
||
|
|
|
||
|
|
/* We take the address of the first element of a asymbol to ensure that the
|
||
|
|
macro is only ever applied to an asymbol. */
|
||
|
|
#define ecoffsymbol(asymbol) ((ecoff_symbol_type *) (&((asymbol)->the_bfd)))
|
||
|
|
|
||
|
|
/* This is a hack borrowed from coffcode.h; 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) ((unsigned long) (symbol)->udata)
|
||
|
|
#define ecoff_set_sym_index(symbol, idx) ((symbol)->udata = (PTR) (idx))
|
||
|
|
|
||
|
|
/* Make an empty ECOFF symbol. */
|
||
|
|
extern asymbol *ecoff_make_empty_symbol PARAMS ((bfd *abfd));
|
||
|
|
|
||
|
|
/* Read in the ECOFF symbolic debugging information. */
|
||
|
|
extern boolean ecoff_slurp_symbolic_info PARAMS ((bfd *));
|
||
|
|
|
||
|
|
/* Generic ECOFF BFD backend vectors. */
|
||
|
|
extern unsigned int ecoff_get_symtab_upper_bound PARAMS ((bfd *abfd));
|
||
|
|
extern unsigned int ecoff_get_symtab PARAMS ((bfd *abfd,
|
||
|
|
asymbol **alocation));
|
||
|
|
extern void ecoff_get_symbol_info PARAMS ((bfd *abfd,
|
||
|
|
asymbol *symbol,
|
||
|
|
symbol_info *ret));
|
||
|
|
extern void ecoff_print_symbol PARAMS ((bfd *abfd, PTR filep,
|
||
|
|
asymbol *symbol,
|
||
|
|
bfd_print_symbol_type how));
|
||
|
|
extern unsigned int ecoff_canonicalize_reloc PARAMS ((bfd *abfd,
|
||
|
|
asection *section,
|
||
|
|
arelent **relptr,
|
||
|
|
asymbol **symbols));
|
||
|
|
extern CONST struct reloc_howto_struct *ecoff_bfd_reloc_type_lookup
|
||
|
|
PARAMS ((bfd *abfd, bfd_reloc_code_real_type code));
|
||
|
|
extern boolean ecoff_find_nearest_line PARAMS ((bfd *abfd,
|
||
|
|
asection *section,
|
||
|
|
asymbol **symbols,
|
||
|
|
bfd_vma offset,
|
||
|
|
CONST char **filename_ptr,
|
||
|
|
CONST char **fnname_ptr,
|
||
|
|
unsigned int *retline_ptr));
|
||
|
|
extern boolean ecoff_bfd_seclet_link PARAMS ((bfd *abfd, PTR data,
|
||
|
|
boolean relocateable));
|
||
|
|
extern boolean ecoff_set_arch_mach PARAMS ((bfd *abfd,
|
||
|
|
enum bfd_architecture arch,
|
||
|
|
unsigned long machine));
|
||
|
|
extern int ecoff_sizeof_headers PARAMS ((bfd *abfd, boolean reloc));
|
||
|
|
extern boolean ecoff_set_section_contents PARAMS ((bfd *abfd,
|
||
|
|
asection *section,
|
||
|
|
PTR location,
|
||
|
|
file_ptr offset,
|
||
|
|
bfd_size_type count));
|
||
|
|
extern boolean ecoff_write_object_contents PARAMS ((bfd *abfd));
|
||
|
|
extern boolean ecoff_slurp_armap PARAMS ((bfd *abfd));
|
||
|
|
extern boolean ecoff_write_armap PARAMS ((bfd *abfd, unsigned int elength,
|
||
|
|
struct orl *map,
|
||
|
|
unsigned int orl_count,
|
||
|
|
int stridx));
|
||
|
|
#define ecoff_slurp_extended_name_table _bfd_slurp_extended_name_table
|
||
|
|
extern bfd_target *ecoff_archive_p PARAMS ((bfd *abfd));
|
||
|
|
#define ecoff_get_lineno \
|
||
|
|
((alent *(*) PARAMS ((bfd *, asymbol *))) bfd_nullvoidptr)
|
||
|
|
#define ecoff_truncate_arname bfd_dont_truncate_arname
|
||
|
|
#define ecoff_openr_next_archived_file bfd_generic_openr_next_archived_file
|
||
|
|
#define ecoff_generic_stat_arch_elt bfd_generic_stat_arch_elt
|
||
|
|
#define ecoff_get_section_contents bfd_generic_get_section_contents
|
||
|
|
#define ecoff_get_reloc_upper_bound coff_get_reloc_upper_bound
|
||
|
|
#define ecoff_close_and_cleanup bfd_generic_close_and_cleanup
|
||
|
|
#define ecoff_bfd_debug_info_start bfd_void
|
||
|
|
#define ecoff_bfd_debug_info_end bfd_void
|
||
|
|
#define ecoff_bfd_debug_info_accumulate \
|
||
|
|
((void (*) PARAMS ((bfd *, struct sec *))) bfd_void)
|
||
|
|
#define ecoff_bfd_get_relocated_section_contents \
|
||
|
|
bfd_generic_get_relocated_section_contents
|
||
|
|
#define ecoff_bfd_relax_section bfd_generic_relax_section
|
||
|
|
#define ecoff_bfd_make_debug_symbol \
|
||
|
|
((asymbol *(*) PARAMS ((bfd *, void *, unsigned long))) bfd_nullvoidptr)
|
||
|
|
|
||
|
|
/* Hook functions for the generic COFF section reading code. */
|
||
|
|
extern asection *ecoff_make_section_hook PARAMS ((bfd *abfd, char *name));
|
||
|
|
extern boolean ecoff_new_section_hook PARAMS ((bfd *abfd,
|
||
|
|
asection *section));
|
||
|
|
#define ecoff_set_alignment_hook \
|
||
|
|
((void (*) PARAMS ((bfd *, asection *, PTR))) bfd_void)
|
||
|
|
extern boolean ecoff_set_arch_mach_hook PARAMS ((bfd *abfd, PTR filehdr));
|
||
|
|
extern long ecoff_sec_to_styp_flags PARAMS ((CONST char *name,
|
||
|
|
flagword flags));
|
||
|
|
extern flagword ecoff_styp_to_sec_flags PARAMS ((bfd *abfd, PTR hdr));
|
||
|
|
extern boolean ecoff_slurp_symbol_table PARAMS ((bfd *abfd));
|