[deliverable/binutils-gdb.git] / bfd / libelf.h

/* 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"

/* 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;

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 *));
  void (*write_relocs) PARAMS ((bfd *, asection *, PTR));

  /* @@ 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;
};

struct bfd_elf_arch_map {
  enum bfd_architecture bfd_arch;
  int elf_arch;
};

extern const struct bfd_elf_arch_map bfd_elf_arch_map[];
extern const int bfd_elf_arch_map_size;

struct bfd_elf_section_data {
  Elf_Internal_Shdr this_hdr;
  Elf_Internal_Shdr rel_hdr;
  int this_idx, rel_idx;
#if 0
  Elf_Internal_Shdr str_hdr;
  int str_idx;
#endif
};
#define elf_section_data(sec)  ((struct bfd_elf_section_data*)sec->used_by_bfd)
#define shdr_name(abfd,shdr)	(elf_shstrtab (abfd)->tab + (shdr)->sh_name)

#define get_elf_backend_data(abfd) \
  ((struct elf_backend_data *) (abfd)->xvec->backend_data)

struct strtab
{
  char *tab;
  int nentries;
  int length;
};

/* 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 num_locals;
  int num_globals;
  int *symtab_map;
  PTR raw_syms;			/* Elf_External_Sym* */
  Elf_Internal_Sym *internal_syms;
  PTR symbols;			/* elf_symbol_type */
/*  struct strtab *shstrtab;*/
  Elf_Internal_Shdr symtab_hdr;
  Elf_Internal_Shdr shstrtab_hdr;
  Elf_Internal_Shdr strtab_hdr;
  int symtab_section, shstrtab_section, strtab_section;
  file_ptr next_file_pos;
  void *prstatus;		/* The raw /proc prstatus structure */
  void *prpsinfo;		/* The raw /proc prpsinfo structure */
};

#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 PARAMS ((bfd *, unsigned, unsigned));
extern char * elf_get_str_section PARAMS ((bfd *, unsigned));

#define bfd_elf32_mkobject	bfd_elf_mkobject
#define bfd_elf64_mkobject	bfd_elf_mkobject
#define elf_mkobject		bfd_elf_mkobject

extern unsigned long elf_hash PARAMS ((CONST unsigned char *));

extern bfd_reloc_status_type bfd_elf_generic_reloc PARAMS ((bfd *,
							    arelent *,
							    asymbol *,
							    PTR,
							    asection *,
							    bfd *));
extern boolean bfd_elf_mkobject PARAMS ((bfd *));
extern boolean bfd_elf32_write_object_contents PARAMS ((bfd *));
extern boolean bfd_elf64_write_object_contents PARAMS ((bfd *));

extern bfd_target *bfd_elf32_object_p PARAMS ((bfd *));
extern bfd_target *bfd_elf32_core_file_p 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 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 void bfd_elf32__write_relocs PARAMS ((bfd *, asection *, PTR));
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 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 void bfd_elf64__write_relocs PARAMS ((bfd *, asection *, PTR));
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 *));

#endif /* _LIBELF_H_ */
Commit	Line	Data
db232882 KR	1	/* BFD back-end data structures for ELF files.
	2	Copyright (C) 1992, 1993 Free Software Foundation, Inc.
	3	Written by Cygnus Support.
	4
	5	This file is part of BFD, the Binary File Descriptor library.
	6
	7	This program is free software; you can redistribute it and/or modify
	8	it under the terms of the GNU General Public License as published by
	9	the Free Software Foundation; either version 2 of the License, or
	10	(at your option) any later version.
	11
	12	This program is distributed in the hope that it will be useful,
	13	but WITHOUT ANY WARRANTY; without even the implied warranty of
	14	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	15	GNU General Public License for more details.
	16
	17	You should have received a copy of the GNU General Public License
	18	along with this program; if not, write to the Free Software
	19	Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
	20
	21	#ifndef _LIBELF_H_
	22	#define _LIBELF_H_ 1
	23
81187b54 KR	24	#include "elf/common.h"
	25	#include "elf/internal.h"
	26	#include "elf/external.h"
	27
998ce1e0	28	/* If size isn't specified as 64 or 32, NAME macro should fail. */
9942e684	29	#ifndef NAME
7050286d	30	#if ARCH_SIZE==64
638616ca	31	#define NAME(x,y) CAT4(x,64,_,y)
998ce1e0 KR	32	#endif
998ce1e0 KR	33	#if ARCH_SIZE==32
638616ca	34	#define NAME(x,y) CAT4(x,32,_,y)
9942e684 KR	35	#endif
	36	#endif
	37
638616ca KR	38	#define ElfNAME(X) NAME(Elf,X)
	39	#define elfNAME(X) NAME(elf,X)
	40
db232882 KR	41	typedef struct
	42	{
	43	asymbol symbol;
268f94ac	44	Elf_Internal_Sym internal_elf_sym;
db232882 KR	45	/* these are used for the generation of .stabX symbols (?) */
	46	short desc;
	47	unsigned char type;
	48	char other;
7050286d KR	49	union
	50	{
	51	unsigned int hppa_arg_reloc;
	52	PTR any;
	53	}
	54	tc_data;
998ce1e0 KR	55	Elf32_External_Sym native_elf_sym;
998ce1e0 KR	56	} elf32_symbol_type;
db232882	57
998ce1e0 KR	58	typedef struct
	59	{
	60	asymbol symbol;
	61	Elf_Internal_Sym internal_elf_sym;
	62	/* these are used for the generation of .stabX symbols (?) */
	63	short desc;
	64	unsigned char type;
	65	char other;
	66	union
	67	{
	68	unsigned int hppa_arg_reloc;
	69	PTR any;
	70	}
	71	tc_data;
	72	Elf64_External_Sym native_elf_sym;
	73	} elf64_symbol_type;
7050286d	74
268f94ac	75	struct elf_backend_data
7050286d KR	76	{
	77	int use_rela_p;
	78	int elf_64_p;
81187b54	79	enum bfd_architecture arch;
7050286d	80	void (elf_info_to_howto) PARAMS ((bfd , arelent *,
268f94ac	81	Elf_Internal_Rela *));
7050286d	82	void (elf_info_to_howto_rel) PARAMS ((bfd , arelent *,
268f94ac	83	Elf_Internal_Rel *));
32090b8e	84	void (write_relocs) PARAMS ((bfd , asection *, PTR));
db232882	85
8e40bcd8 KR	86	/* @@ I really don't think this should be here. I don't know what
	87	global_sym is supposed to be used for, but I doubt it's something
	88	that would be considered global, e.g., if you've got a program
	89	reading and writing many BFDs. My hunch is that it's specific to
	90	the output BFD. If not, put a comment here explaining why. */
998ce1e0 KR	91	/* @@ Was pointer to elfNAME(symbol_type). This makes it size-
	92	independent. */
	93	PTR global_sym;
81187b54 KR	94	};
81187b54 KR	95
32090b8e KR	96	struct bfd_elf_arch_map {
	97	enum bfd_architecture bfd_arch;
	98	int elf_arch;
	99	};
	100
	101	extern const struct bfd_elf_arch_map bfd_elf_arch_map[];
	102	extern const int bfd_elf_arch_map_size;
	103
	104	struct bfd_elf_section_data {
	105	Elf_Internal_Shdr this_hdr;
	106	Elf_Internal_Shdr rel_hdr;
	107	int this_idx, rel_idx;
	108	#if 0
	109	Elf_Internal_Shdr str_hdr;
	110	int str_idx;
	111	#endif
	112	};
	113	#define elf_section_data(sec) ((struct bfd_elf_section_data*)sec->used_by_bfd)
	114	#define shdr_name(abfd,shdr) (elf_shstrtab (abfd)->tab + (shdr)->sh_name)
	115
	116	#define get_elf_backend_data(abfd) \
	117	((struct elf_backend_data *) (abfd)->xvec->backend_data)
	118
	119	struct strtab
	120	{
	121	char *tab;
	122	int nentries;
	123	int length;
	124	};
	125
	126	/* Some private data is stashed away for future use using the tdata pointer
	127	in the bfd structure. */
	128
	129	struct elf_obj_tdata
	130	{
	131	Elf_Internal_Ehdr elf_header[1]; /* Actual data, but ref like ptr */
	132	Elf_Internal_Shdr **elf_sect_ptr;
	133	struct strtab *strtab_ptr;
	134	int num_locals;
	135	int num_globals;
	136	int *symtab_map;
	137	PTR raw_syms; /* Elf_External_Sym* */
	138	Elf_Internal_Sym *internal_syms;
	139	PTR symbols; /* elf_symbol_type */
	140	/* struct strtab shstrtab;/
	141	Elf_Internal_Shdr symtab_hdr;
	142	Elf_Internal_Shdr shstrtab_hdr;
	143	Elf_Internal_Shdr strtab_hdr;
	144	int symtab_section, shstrtab_section, strtab_section;
	145	file_ptr next_file_pos;
	146	void prstatus; / The raw /proc prstatus structure */
	147	void prpsinfo; / The raw /proc prpsinfo structure */
	148	};
	149
	150	#define elf_tdata(bfd) ((bfd) -> tdata.elf_obj_data)
	151	#define elf_elfheader(bfd) (elf_tdata(bfd) -> elf_header)
	152	#define elf_elfsections(bfd) (elf_tdata(bfd) -> elf_sect_ptr)
	153	#define elf_shstrtab(bfd) (elf_tdata(bfd) -> strtab_ptr)
	154	#define elf_onesymtab(bfd) (elf_tdata(bfd) -> symtab_section)
	155	#define elf_num_locals(bfd) (elf_tdata(bfd) -> num_locals)
	156	#define elf_num_globals(bfd) (elf_tdata(bfd) -> num_globals)
	157	#define elf_symtab_map(bfd) (elf_tdata(bfd) -> symtab_map)
	158	#define core_prpsinfo(bfd) (elf_tdata(bfd) -> prpsinfo)
	159	#define core_prstatus(bfd) (elf_tdata(bfd) -> prstatus)
160	#define obj_symbols(bfd) ((elf_symbol_type*)(elf_tdata(bfd) -> symbols))
161	#define obj_raw_syms(bfd) ((Elf_External_Sym*)(elf_tdata(bfd) -> raw_syms))
162	#define obj_internal_syms(bfd) (elf_tdata(bfd) -> internal_syms)
163
164	extern char * elf_string_from_elf_section PARAMS ((bfd *, unsigned, unsigned));
165	extern char * elf_get_str_section PARAMS ((bfd *, unsigned));
166
167	#define bfd_elf32_mkobject bfd_elf_mkobject
168	#define bfd_elf64_mkobject bfd_elf_mkobject
169	#define elf_mkobject bfd_elf_mkobject
170
7e37f9ff KR	171	extern unsigned long elf_hash PARAMS ((CONST unsigned char *));
7e37f9ff KR	172
32090b8e KR	173	extern bfd_reloc_status_type bfd_elf_generic_reloc PARAMS ((bfd *,
	174	arelent *,
	175	asymbol *,
	176	PTR,
	177	asection *,
	178	bfd *));
998ce1e0	179	extern boolean bfd_elf_mkobject PARAMS ((bfd *));
9942e684	180	extern boolean bfd_elf32_write_object_contents PARAMS ((bfd *));
32090b8e KR	181	extern boolean bfd_elf64_write_object_contents PARAMS ((bfd *));
	182
	183	extern bfd_target bfd_elf32_object_p PARAMS ((bfd ));
	184	extern bfd_target bfd_elf32_core_file_p PARAMS ((bfd ));
9942e684 KR	185	extern char bfd_elf32_core_file_failing_command PARAMS ((bfd ));
	186	extern int bfd_elf32_core_file_failing_signal PARAMS ((bfd *));
	187	extern boolean bfd_elf32_core_file_matches_executable_p PARAMS ((bfd *,
	188	bfd *));
	189	extern boolean bfd_elf32_set_section_contents PARAMS ((bfd *, sec_ptr, PTR,
	190	file_ptr,
	191	bfd_size_type));
7050286d	192
9942e684 KR	193	extern unsigned int bfd_elf32_get_symtab_upper_bound PARAMS ((bfd *));
	194	extern unsigned int bfd_elf32_get_symtab PARAMS ((bfd , asymbol *));
	195	extern unsigned int bfd_elf32_get_reloc_upper_bound PARAMS ((bfd *, sec_ptr));
	196	extern unsigned int bfd_elf32_canonicalize_reloc PARAMS ((bfd *, sec_ptr,
	197	arelent **,
	198	asymbol **));
	199	extern asymbol bfd_elf32_make_empty_symbol PARAMS ((bfd ));
	200	extern void bfd_elf32_print_symbol PARAMS ((bfd , PTR, asymbol ,
	201	bfd_print_symbol_type));
	202	extern void bfd_elf32_get_symbol_info PARAMS ((bfd , asymbol ,
7050286d	203	symbol_info *));
9942e684 KR	204	extern alent bfd_elf32_get_lineno PARAMS ((bfd , asymbol *));
	205	extern boolean bfd_elf32_set_arch_mach PARAMS ((bfd *, enum bfd_architecture,
	206	unsigned long));
	207	extern boolean bfd_elf32_find_nearest_line PARAMS ((bfd , asection ,
	208	asymbol **,
	209	bfd_vma, CONST char **,
	210	CONST char **,
	211	unsigned int *));
	212	extern int bfd_elf32_sizeof_headers PARAMS ((bfd *, boolean));
32090b8e	213	extern void bfd_elf32__write_relocs PARAMS ((bfd , asection , PTR));
e6858d1b	214	extern boolean bfd_elf32_new_section_hook PARAMS ((bfd , asection ));
81187b54 KR	215
81187b54 KR	216	/* If the target doesn't have reloc handling written yet: */
9942e684 KR	217	extern void bfd_elf32_no_info_to_howto PARAMS ((bfd , arelent ,
9942e684 KR	218	Elf32_Internal_Rela *));
db232882	219
7d9bb6da KR	220	extern bfd_target bfd_elf64_object_p PARAMS ((bfd ));
7d9bb6da KR	221	extern bfd_target bfd_elf64_core_file_p PARAMS ((bfd ));
7d9bb6da KR	222	extern char bfd_elf64_core_file_failing_command PARAMS ((bfd ));
	223	extern int bfd_elf64_core_file_failing_signal PARAMS ((bfd *));
	224	extern boolean bfd_elf64_core_file_matches_executable_p PARAMS ((bfd *,
	225	bfd *));
	226	extern boolean bfd_elf64_set_section_contents PARAMS ((bfd *, sec_ptr, PTR,
	227	file_ptr,
	228	bfd_size_type));
	229
	230	extern unsigned int bfd_elf64_get_symtab_upper_bound PARAMS ((bfd *));
	231	extern unsigned int bfd_elf64_get_symtab PARAMS ((bfd , asymbol *));
	232	extern unsigned int bfd_elf64_get_reloc_upper_bound PARAMS ((bfd *, sec_ptr));
	233	extern unsigned int bfd_elf64_canonicalize_reloc PARAMS ((bfd *, sec_ptr,
	234	arelent **,
	235	asymbol **));
	236	extern asymbol bfd_elf64_make_empty_symbol PARAMS ((bfd ));
	237	extern void bfd_elf64_print_symbol PARAMS ((bfd , PTR, asymbol ,
	238	bfd_print_symbol_type));
	239	extern void bfd_elf64_get_symbol_info PARAMS ((bfd , asymbol ,
	240	symbol_info *));
	241	extern alent bfd_elf64_get_lineno PARAMS ((bfd , asymbol *));
	242	extern boolean bfd_elf64_set_arch_mach PARAMS ((bfd *, enum bfd_architecture,
	243	unsigned long));
	244	extern boolean bfd_elf64_find_nearest_line PARAMS ((bfd , asection ,
	245	asymbol **,
	246	bfd_vma, CONST char **,
	247	CONST char **,
	248	unsigned int *));
	249	extern int bfd_elf64_sizeof_headers PARAMS ((bfd *, boolean));
32090b8e	250	extern void bfd_elf64__write_relocs PARAMS ((bfd , asection , PTR));
7d9bb6da KR	251	extern boolean bfd_elf64_new_section_hook PARAMS ((bfd , asection ));
	252
	253	/* If the target doesn't have reloc handling written yet: */
	254	extern void bfd_elf64_no_info_to_howto PARAMS ((bfd , arelent ,
	255	Elf64_Internal_Rela *));
	256
db232882	257	#endif /* _LIBELF_H_ */