254 lines
8.9 KiB
C
254 lines
8.9 KiB
C
/* BFD back-end data structures for ELF files.
|
|
Copyright (C) 1992, 1993 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 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. */
|
|
|
|
#ifndef _LIBELF_H_
|
|
#define _LIBELF_H_ 1
|
|
|
|
#include "elf/common.h"
|
|
#include "elf/internal.h"
|
|
#include "elf/external.h"
|
|
|
|
/* This CAT4 hack is to avoid a problem with some strict ANSI C preprocessors.
|
|
The problem is, "32_" is not a valid preprocessing token, and we don't
|
|
want extra underscores (e.g., "elf_32_"). The XCAT2 macro will cause the
|
|
inner CAT macros to be evaluated first, producing still-valid pp-tokens.
|
|
Then the final concatenation can be done. (Sigh.) */
|
|
#ifdef SABER
|
|
#define CAT4(a,b,c,d) a##b##c##d
|
|
#else
|
|
#ifdef __STDC__
|
|
#define XCAT2(a,b) CAT(a,b)
|
|
#define CAT4(a,b,c,d) XCAT2(CAT(a,b),CAT(c,d))
|
|
#else
|
|
#define CAT4(a,b,c,d) a/**/b/**/c/**/d
|
|
#endif
|
|
#endif
|
|
|
|
/* If size isn't specified as 64 or 32, NAME macro should fail. */
|
|
#ifndef NAME
|
|
#if ARCH_SIZE==64
|
|
#define NAME(x,y) CAT4(x,64,_,y)
|
|
#endif
|
|
#if ARCH_SIZE==32
|
|
#define NAME(x,y) CAT4(x,32,_,y)
|
|
#endif
|
|
#endif
|
|
|
|
#define ElfNAME(X) NAME(Elf,X)
|
|
#define elfNAME(X) NAME(elf,X)
|
|
|
|
typedef struct
|
|
{
|
|
asymbol symbol;
|
|
Elf_Internal_Sym internal_elf_sym;
|
|
/* these are used for the generation of .stabX symbols (?) */
|
|
short desc;
|
|
unsigned char type;
|
|
char other;
|
|
union
|
|
{
|
|
unsigned int hppa_arg_reloc;
|
|
PTR any;
|
|
}
|
|
tc_data;
|
|
Elf32_External_Sym native_elf_sym;
|
|
} elf32_symbol_type;
|
|
|
|
typedef struct
|
|
{
|
|
asymbol symbol;
|
|
Elf_Internal_Sym internal_elf_sym;
|
|
/* these are used for the generation of .stabX symbols (?) */
|
|
short desc;
|
|
unsigned char type;
|
|
char other;
|
|
union
|
|
{
|
|
unsigned int hppa_arg_reloc;
|
|
PTR any;
|
|
}
|
|
tc_data;
|
|
Elf64_External_Sym native_elf_sym;
|
|
} elf64_symbol_type;
|
|
|
|
/* Lacking nested functions and nested types, set up for mapping over
|
|
BFD sections to produce ELF sections. */
|
|
typedef struct
|
|
{
|
|
Elf_Internal_Ehdr * i_ehdr;
|
|
Elf_Internal_Shdr * i_shdrp;
|
|
struct strtab *shstrtab;
|
|
int symtab_section;
|
|
}
|
|
elf_sect_thunk;
|
|
|
|
struct elf_backend_data
|
|
{
|
|
int use_rela_p;
|
|
int elf_64_p;
|
|
enum bfd_architecture arch;
|
|
void (*elf_info_to_howto) PARAMS ((bfd *, arelent *,
|
|
Elf_Internal_Rela *));
|
|
void (*elf_info_to_howto_rel) PARAMS ((bfd *, arelent *,
|
|
Elf_Internal_Rel *));
|
|
|
|
/* @@ I really don't think this should be here. I don't know what
|
|
global_sym is supposed to be used for, but I doubt it's something
|
|
that would be considered global, e.g., if you've got a program
|
|
reading and writing many BFDs. My hunch is that it's specific to
|
|
the output BFD. If not, put a comment here explaining why. */
|
|
/* @@ Was pointer to elfNAME(symbol_type). This makes it size-
|
|
independent. */
|
|
PTR global_sym;
|
|
};
|
|
|
|
extern bfd_target *bfd_elf32_object_p PARAMS ((bfd *));
|
|
extern bfd_target *bfd_elf32_core_file_p PARAMS ((bfd *));
|
|
extern boolean bfd_elf_mkobject PARAMS ((bfd *));
|
|
extern boolean bfd_elf32_write_object_contents PARAMS ((bfd *));
|
|
extern char *bfd_elf32_core_file_failing_command PARAMS ((bfd *));
|
|
extern int bfd_elf32_core_file_failing_signal PARAMS ((bfd *));
|
|
extern boolean bfd_elf32_core_file_matches_executable_p PARAMS ((bfd *,
|
|
bfd *));
|
|
extern boolean bfd_elf32_set_section_contents PARAMS ((bfd *, sec_ptr, PTR,
|
|
file_ptr,
|
|
bfd_size_type));
|
|
|
|
extern boolean elf_get_sect_thunk PARAMS ((bfd *, elf_sect_thunk *));
|
|
extern unsigned int bfd_elf32_get_symtab_upper_bound PARAMS ((bfd *));
|
|
extern unsigned int bfd_elf32_get_symtab PARAMS ((bfd *, asymbol **));
|
|
extern unsigned int bfd_elf32_get_reloc_upper_bound PARAMS ((bfd *, sec_ptr));
|
|
extern unsigned int bfd_elf32_canonicalize_reloc PARAMS ((bfd *, sec_ptr,
|
|
arelent **,
|
|
asymbol **));
|
|
extern asymbol *bfd_elf32_make_empty_symbol PARAMS ((bfd *));
|
|
extern void bfd_elf32_print_symbol PARAMS ((bfd *, PTR, asymbol *,
|
|
bfd_print_symbol_type));
|
|
extern void bfd_elf32_get_symbol_info PARAMS ((bfd *, asymbol *,
|
|
symbol_info *));
|
|
extern alent *bfd_elf32_get_lineno PARAMS ((bfd *, asymbol *));
|
|
extern boolean bfd_elf32_set_arch_mach PARAMS ((bfd *, enum bfd_architecture,
|
|
unsigned long));
|
|
extern boolean bfd_elf32_find_nearest_line PARAMS ((bfd *, asection *,
|
|
asymbol **,
|
|
bfd_vma, CONST char **,
|
|
CONST char **,
|
|
unsigned int *));
|
|
extern int bfd_elf32_sizeof_headers PARAMS ((bfd *, boolean));
|
|
extern unsigned long elf_hash PARAMS ((CONST unsigned char *));
|
|
extern boolean bfd_elf32_new_section_hook PARAMS ((bfd *, asection *));
|
|
|
|
/* If the target doesn't have reloc handling written yet: */
|
|
extern void bfd_elf32_no_info_to_howto PARAMS ((bfd *, arelent *,
|
|
Elf32_Internal_Rela *));
|
|
|
|
extern bfd_target *bfd_elf64_object_p PARAMS ((bfd *));
|
|
extern bfd_target *bfd_elf64_core_file_p PARAMS ((bfd *));
|
|
extern boolean bfd_elf64_write_object_contents PARAMS ((bfd *));
|
|
extern char *bfd_elf64_core_file_failing_command PARAMS ((bfd *));
|
|
extern int bfd_elf64_core_file_failing_signal PARAMS ((bfd *));
|
|
extern boolean bfd_elf64_core_file_matches_executable_p PARAMS ((bfd *,
|
|
bfd *));
|
|
extern boolean bfd_elf64_set_section_contents PARAMS ((bfd *, sec_ptr, PTR,
|
|
file_ptr,
|
|
bfd_size_type));
|
|
|
|
extern unsigned int bfd_elf64_get_symtab_upper_bound PARAMS ((bfd *));
|
|
extern unsigned int bfd_elf64_get_symtab PARAMS ((bfd *, asymbol **));
|
|
extern unsigned int bfd_elf64_get_reloc_upper_bound PARAMS ((bfd *, sec_ptr));
|
|
extern unsigned int bfd_elf64_canonicalize_reloc PARAMS ((bfd *, sec_ptr,
|
|
arelent **,
|
|
asymbol **));
|
|
extern asymbol *bfd_elf64_make_empty_symbol PARAMS ((bfd *));
|
|
extern void bfd_elf64_print_symbol PARAMS ((bfd *, PTR, asymbol *,
|
|
bfd_print_symbol_type));
|
|
extern void bfd_elf64_get_symbol_info PARAMS ((bfd *, asymbol *,
|
|
symbol_info *));
|
|
extern alent *bfd_elf64_get_lineno PARAMS ((bfd *, asymbol *));
|
|
extern boolean bfd_elf64_set_arch_mach PARAMS ((bfd *, enum bfd_architecture,
|
|
unsigned long));
|
|
extern boolean bfd_elf64_find_nearest_line PARAMS ((bfd *, asection *,
|
|
asymbol **,
|
|
bfd_vma, CONST char **,
|
|
CONST char **,
|
|
unsigned int *));
|
|
extern int bfd_elf64_sizeof_headers PARAMS ((bfd *, boolean));
|
|
extern boolean bfd_elf64_new_section_hook PARAMS ((bfd *, asection *));
|
|
|
|
/* If the target doesn't have reloc handling written yet: */
|
|
extern void bfd_elf64_no_info_to_howto PARAMS ((bfd *, arelent *,
|
|
Elf64_Internal_Rela *));
|
|
|
|
#define get_elf_backend_data(abfd) \
|
|
((struct elf_backend_data *) (abfd)->xvec->backend_data)
|
|
|
|
struct strtab
|
|
{
|
|
char *tab;
|
|
int nentries;
|
|
int length;
|
|
};
|
|
|
|
extern struct elf32_internal_shdr *
|
|
bfd_elf_locate_sh PARAMS ((bfd *, struct strtab *,
|
|
struct elf32_internal_shdr *, CONST char *));
|
|
|
|
/* Some private data is stashed away for future use using the tdata pointer
|
|
in the bfd structure. */
|
|
|
|
struct elf_obj_tdata
|
|
{
|
|
Elf_Internal_Ehdr elf_header[1]; /* Actual data, but ref like ptr */
|
|
Elf_Internal_Shdr *elf_sect_ptr;
|
|
struct strtab *strtab_ptr;
|
|
int symtab_section;
|
|
int num_locals;
|
|
int num_globals;
|
|
int *symtab_map;
|
|
void *prstatus; /* The raw /proc prstatus structure */
|
|
void *prpsinfo; /* The raw /proc prpsinfo structure */
|
|
PTR raw_syms; /* Elf_External_Sym* */
|
|
Elf_Internal_Sym *internal_syms;
|
|
PTR symbols; /* elf_symbol_type */
|
|
};
|
|
|
|
#define elf_tdata(bfd) ((bfd) -> tdata.elf_obj_data)
|
|
#define elf_elfheader(bfd) (elf_tdata(bfd) -> elf_header)
|
|
#define elf_elfsections(bfd) (elf_tdata(bfd) -> elf_sect_ptr)
|
|
#define elf_shstrtab(bfd) (elf_tdata(bfd) -> strtab_ptr)
|
|
#define elf_onesymtab(bfd) (elf_tdata(bfd) -> symtab_section)
|
|
#define elf_num_locals(bfd) (elf_tdata(bfd) -> num_locals)
|
|
#define elf_num_globals(bfd) (elf_tdata(bfd) -> num_globals)
|
|
#define elf_symtab_map(bfd) (elf_tdata(bfd) -> symtab_map)
|
|
#define core_prpsinfo(bfd) (elf_tdata(bfd) -> prpsinfo)
|
|
#define core_prstatus(bfd) (elf_tdata(bfd) -> prstatus)
|
|
#define obj_symbols(bfd) ((elf_symbol_type*)(elf_tdata(bfd) -> symbols))
|
|
#define obj_raw_syms(bfd) ((Elf_External_Sym*)(elf_tdata(bfd) -> raw_syms))
|
|
#define obj_internal_syms(bfd) (elf_tdata(bfd) -> internal_syms)
|
|
|
|
extern char * elf_string_from_elf_section ();
|
|
extern char * elf_get_str_section ();
|
|
|
|
#define bfd_elf32_mkobject bfd_elf_mkobject
|
|
#define bfd_elf64_mkobject bfd_elf_mkobject
|
|
#define elf_mkobject bfd_elf_mkobject
|
|
|
|
#endif /* _LIBELF_H_ */
|