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[thirdparty/glibc.git] / elf / elf.h

/* This file defines standard ELF types, structures, and macros.
   Copyright (C) 1995, 1996, 1997 Free Software Foundation, Inc.
   This file is part of the GNU C Library.
   Contributed by Ian Lance Taylor <ian@cygnus.com>.

   The GNU C Library is free software; you can redistribute it and/or
   modify it under the terms of the GNU Library General Public License as
   published by the Free Software Foundation; either version 2 of the
   License, or (at your option) any later version.

   The GNU C Library 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
   Library General Public License for more details.

   You should have received a copy of the GNU Library General Public
   License along with the GNU C Library; see the file COPYING.LIB.  If not,
   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
   Boston, MA 02111-1307, USA.  */

#ifndef _ELF_H
#define	_ELF_H 1

#include <sys/cdefs.h>

__BEGIN_DECLS

/* Standard ELF types.  */

#include <inttypes.h>

/* Type for a 16-bit quantity.  */
typedef uint16_t Elf32_Half;
typedef uint16_t Elf64_Half;

/* Types for signed and unsigned 32-bit quantities.  */
typedef uint32_t Elf32_Word;
typedef	int32_t  Elf32_Sword;
typedef uint32_t Elf64_Word;
typedef	int32_t  Elf64_Sword;

/* Types for signed and unsigned 64-bit quantities.  */
typedef uint64_t Elf32_Xword;
typedef	int64_t  Elf32_Sxword;
typedef uint64_t Elf64_Xword;
typedef	int64_t  Elf64_Sxword;

/* Type of addresses.  */
typedef uint32_t Elf32_Addr;
typedef uint64_t Elf64_Addr;

/* Type of file offsets.  */
typedef uint32_t Elf32_Off;
typedef uint64_t Elf64_Off;

/* Type for section indices, which are 16-bit quantities.  */
typedef uint16_t Elf32_Section;
typedef uint16_t Elf64_Section;

/* Type of symbol indices.  */
typedef uint32_t Elf32_Symndx;
typedef uint64_t Elf64_Symndx;


/* The ELF file header.  This appears at the start of every ELF file.  */

#define EI_NIDENT (16)

typedef struct
{
  unsigned char	e_ident[EI_NIDENT];	/* Magic number and other info */
  Elf32_Half	e_type;			/* Object file type */
  Elf32_Half	e_machine;		/* Architecture */
  Elf32_Word	e_version;		/* Object file version */
  Elf32_Addr	e_entry;		/* Entry point virtual address */
  Elf32_Off	e_phoff;		/* Program header table file offset */
  Elf32_Off	e_shoff;		/* Section header table file offset */
  Elf32_Word	e_flags;		/* Processor-specific flags */
  Elf32_Half	e_ehsize;		/* ELF header size in bytes */
  Elf32_Half	e_phentsize;		/* Program header table entry size */
  Elf32_Half	e_phnum;		/* Program header table entry count */
  Elf32_Half	e_shentsize;		/* Section header table entry size */
  Elf32_Half	e_shnum;		/* Section header table entry count */
  Elf32_Half	e_shstrndx;		/* Section header string table index */
} Elf32_Ehdr;

typedef struct
{
  unsigned char	e_ident[EI_NIDENT];	/* Magic number and other info */
  Elf64_Half	e_type;			/* Object file type */
  Elf64_Half	e_machine;		/* Architecture */
  Elf64_Word	e_version;		/* Object file version */
  Elf64_Addr	e_entry;		/* Entry point virtual address */
  Elf64_Off	e_phoff;		/* Program header table file offset */
  Elf64_Off	e_shoff;		/* Section header table file offset */
  Elf64_Word	e_flags;		/* Processor-specific flags */
  Elf64_Half	e_ehsize;		/* ELF header size in bytes */
  Elf64_Half	e_phentsize;		/* Program header table entry size */
  Elf64_Half	e_phnum;		/* Program header table entry count */
  Elf64_Half	e_shentsize;		/* Section header table entry size */
  Elf64_Half	e_shnum;		/* Section header table entry count */
  Elf64_Half	e_shstrndx;		/* Section header string table index */
} Elf64_Ehdr;

/* Fields in the e_ident array.  The EI_* macros are indices into the
   array.  The macros under each EI_* macro are the values the byte
   may have.  */

#define EI_MAG0		0		/* File identification byte 0 index */
#define ELFMAG0		0x7f		/* Magic number byte 0 */

#define EI_MAG1		1		/* File identification byte 1 index */
#define ELFMAG1		'E'		/* Magic number byte 1 */

#define EI_MAG2		2		/* File identification byte 2 index */
#define ELFMAG2		'L'		/* Magic number byte 2 */

#define EI_MAG3		3		/* File identification byte 3 index */
#define ELFMAG3		'F'		/* Magic number byte 3 */

/* Conglomeration of the identification bytes, for easy testing as a word.  */
#define	ELFMAG		"\177ELF"
#define	SELFMAG		4

#define EI_CLASS	4		/* File class byte index */
#define ELFCLASSNONE	0		/* Invalid class */
#define ELFCLASS32	1		/* 32-bit objects */
#define ELFCLASS64	2		/* 64-bit objects */

#define EI_DATA		5		/* Data encoding byte index */
#define ELFDATANONE	0		/* Invalid data encoding */
#define ELFDATA2LSB	1		/* 2's complement, little endian */
#define ELFDATA2MSB	2		/* 2's complement, big endian */

#define EI_VERSION	6		/* File version byte index */
					/* Value must be EV_CURRENT */

#define EI_PAD		7		/* Byte index of padding bytes */

/* Legal values for e_type (object file type).  */

#define ET_NONE		0		/* No file type */
#define ET_REL		1		/* Relocatable file */
#define ET_EXEC		2		/* Executable file */
#define ET_DYN		3		/* Shared object file */
#define ET_CORE		4		/* Core file */
#define	ET_NUM		5		/* Number of defined types.  */
#define ET_LOPROC	0xff00		/* Processor-specific */
#define ET_HIPROC	0xffff		/* Processor-specific */

/* Legal values for e_machine (architecture).  */

#define EM_NONE		0		/* No machine */
#define EM_M32		1		/* AT&T WE 32100 */
#define EM_SPARC	2		/* SUN SPARC */
#define EM_386		3		/* Intel 80386 */
#define EM_68K		4		/* Motorola m68k family */
#define EM_88K		5		/* Motorola m88k family */
#define EM_486		6		/* Intel 80486 */
#define EM_860		7		/* Intel 80860 */
#define EM_MIPS		8		/* MIPS R3000 big-endian */
#define EM_S370		9		/* Amdahl */
#define EM_MIPS_RS4_BE 10		/* MIPS R4000 big-endian */

#define EM_SPARC64     11		/* SPARC v9 (not official) 64-bit */

#define EM_PARISC      15		/* HPPA */
#define EM_PPC         20		/* PowerPC */

/* If it is necessary to assign new unofficial EM_* values, please
   pick large random numbers (0x8523, 0xa7f2, etc.) to minimize the
   chances of collision with official or non-GNU unofficial values.  */

#define EM_ALPHA	0x9026

/* Legal values for e_version (version).  */

#define EV_NONE		0		/* Invalid ELF version */
#define EV_CURRENT	1		/* Current version */

/* Section header.  */

typedef struct
{
  Elf32_Word	sh_name;		/* Section name (string tbl index) */
  Elf32_Word	sh_type;		/* Section type */
  Elf32_Word	sh_flags;		/* Section flags */
  Elf32_Addr	sh_addr;		/* Section virtual addr at execution */
  Elf32_Off	sh_offset;		/* Section file offset */
  Elf32_Word	sh_size;		/* Section size in bytes */
  Elf32_Word	sh_link;		/* Link to another section */
  Elf32_Word	sh_info;		/* Additional section information */
  Elf32_Word	sh_addralign;		/* Section alignment */
  Elf32_Word	sh_entsize;		/* Entry size if section holds table */
} Elf32_Shdr;

typedef struct
{
  Elf64_Word	sh_name;		/* Section name (string tbl index) */
  Elf64_Word	sh_type;		/* Section type */
  Elf64_Xword	sh_flags;		/* Section flags */
  Elf64_Addr	sh_addr;		/* Section virtual addr at execution */
  Elf64_Off	sh_offset;		/* Section file offset */
  Elf64_Xword	sh_size;		/* Section size in bytes */
  Elf64_Word	sh_link;		/* Link to another section */
  Elf64_Word	sh_info;		/* Additional section information */
  Elf64_Xword	sh_addralign;		/* Section alignment */
  Elf64_Xword	sh_entsize;		/* Entry size if section holds table */
} Elf64_Shdr;

/* Special section indices.  */

#define SHN_UNDEF	0		/* Undefined section */
#define SHN_LORESERVE	0xff00		/* Start of reserved indices */
#define SHN_LOPROC	0xff00		/* Start of processor-specific */
#define SHN_HIPROC	0xff1f		/* End of processor-specific */
#define SHN_ABS		0xfff1		/* Associated symbol is absolute */
#define SHN_COMMON	0xfff2		/* Associated symbol is common */
#define SHN_HIRESERVE	0xffff		/* End of reserved indices */

/* Legal values for sh_type (section type).  */

#define SHT_NULL	0		/* Section header table entry unused */
#define SHT_PROGBITS	1		/* Program data */
#define SHT_SYMTAB	2		/* Symbol table */
#define SHT_STRTAB	3		/* String table */
#define SHT_RELA	4		/* Relocation entries with addends */
#define SHT_HASH	5		/* Symbol hash table */
#define SHT_DYNAMIC	6		/* Dynamic linking information */
#define SHT_NOTE	7		/* Notes */
#define SHT_NOBITS	8		/* Program space with no data (bss) */
#define SHT_REL		9		/* Relocation entries, no addends */
#define SHT_SHLIB	10		/* Reserved */
#define SHT_DYNSYM	11		/* Dynamic linker symbol table */
#define	SHT_NUM		12		/* Number of defined types.  */
#define SHT_LOSUNW	0x6ffffffd	/* Sun-specific low bound.  */
#define SHT_GNU_verdef	0x6ffffffd	/* Version definition section.  */
#define SHT_GNU_verneed	0x6ffffffe	/* Version needs section.  */
#define SHT_GNU_versym	0x6fffffff	/* Version symbol table.  */
#define SHT_HISUNW	0x6fffffff	/* Sun-specific high bound.  */
#define SHT_LOPROC	0x70000000	/* Start of processor-specific */
#define SHT_HIPROC	0x7fffffff	/* End of processor-specific */
#define SHT_LOUSER	0x80000000	/* Start of application-specific */
#define SHT_HIUSER	0x8fffffff	/* End of application-specific */

/* Legal values for sh_flags (section flags).  */

#define SHF_WRITE	(1 << 0)	/* Writable */
#define SHF_ALLOC	(1 << 1)	/* Occupies memory during execution */
#define SHF_EXECINSTR	(1 << 2)	/* Executable */
#define SHF_MASKPROC	0xf0000000	/* Processor-specific */

/* Symbol table entry.  */

typedef struct
{
  Elf32_Word	st_name;		/* Symbol name (string tbl index) */
  Elf32_Addr	st_value;		/* Symbol value */
  Elf32_Word	st_size;		/* Symbol size */
  unsigned char	st_info;		/* Symbol type and binding */
  unsigned char	st_other;		/* No defined meaning, 0 */
  Elf32_Section	st_shndx;		/* Section index */
} Elf32_Sym;

typedef struct
{
  Elf64_Word	st_name;		/* Symbol name (string tbl index) */
  unsigned char	st_info;		/* Symbol type and binding */
  unsigned char st_other;		/* No defined meaning, 0 */
  Elf64_Section	st_shndx;		/* Section index */
  Elf64_Addr	st_value;		/* Symbol value */
  Elf64_Xword	st_size;		/* Symbol size */
} Elf64_Sym;

/* Special section index.  */

#define SHN_UNDEF	0		/* No section, undefined symbol.  */

/* How to extract and insert information held in the st_info field.  */

#define ELF32_ST_BIND(val)		(((unsigned char) (val)) >> 4)
#define ELF32_ST_TYPE(val)		((val) & 0xf)
#define ELF32_ST_INFO(bind, type)	(((bind) << 4) + ((type) & 0xf))

/* Both Elf32_Sym and Elf64_Sym use the same one-byte st_info field.  */
#define ELF64_ST_BIND(val)		ELF32_ST_BIND (val)
#define ELF64_ST_TYPE(val)		ELF32_ST_TYPE (val)
#define ELF64_ST_INFO(bind, type)	ELF32_ST_INFO ((bind), (type))

/* Legal values for ST_BIND subfield of st_info (symbol binding).  */

#define STB_LOCAL	0		/* Local symbol */
#define STB_GLOBAL	1		/* Global symbol */
#define STB_WEAK	2		/* Weak symbol */
#define	STB_NUM		3		/* Number of defined types.  */
#define STB_LOPROC	13		/* Start of processor-specific */
#define STB_HIPROC	15		/* End of processor-specific */

/* Legal values for ST_TYPE subfield of st_info (symbol type).  */

#define STT_NOTYPE	0		/* Symbol type is unspecified */
#define STT_OBJECT	1		/* Symbol is a data object */
#define STT_FUNC	2		/* Symbol is a code object */
#define STT_SECTION	3		/* Symbol associated with a section */
#define STT_FILE	4		/* Symbol's name is file name */
#define	STT_NUM		5		/* Number of defined types.  */
#define STT_LOPROC	13		/* Start of processor-specific */
#define STT_HIPROC	15		/* End of processor-specific */


/* Symbol table indices are found in the hash buckets and chain table
   of a symbol hash table section.  This special index value indicates
   the end of a chain, meaning no further symbols are found in that bucket.  */

#define STN_UNDEF	0		/* End of a chain.  */


/* Relocation table entry without addend (in section of type SHT_REL).  */

typedef struct
{
  Elf32_Addr	r_offset;		/* Address */
  Elf32_Word	r_info;			/* Relocation type and symbol index */
} Elf32_Rel;

/* I have seen two different definitions of the Elf64_Rel and
   Elf64_Rela structures, so we'll leave them out until Novell (or
   whoever) gets their act together.  */
/* The following, at least, is used on Sparc v9, MIPS, and Alpha.  */

typedef struct
{
  Elf64_Addr	r_offset;		/* Address */
  Elf64_Xword	r_info;			/* Relocation type and symbol index */
} Elf64_Rel;

/* Relocation table entry with addend (in section of type SHT_RELA).  */

typedef struct
{
  Elf32_Addr	r_offset;		/* Address */
  Elf32_Word	r_info;			/* Relocation type and symbol index */
  Elf32_Sword	r_addend;		/* Addend */
} Elf32_Rela;

typedef struct
{
  Elf64_Addr	r_offset;		/* Address */
  Elf64_Xword	r_info;			/* Relocation type and symbol index */
  Elf64_Sxword	r_addend;		/* Addend */
} Elf64_Rela;

/* How to extract and insert information held in the r_info field.  */

#define ELF32_R_SYM(val)		((val) >> 8)
#define ELF32_R_TYPE(val)		((val) & 0xff)
#define ELF32_R_INFO(sym, type)		(((sym) << 8) + ((type) & 0xff))

#define ELF64_R_SYM(i)			((i) >> 32)
#define ELF64_R_TYPE(i)			((i) & 0xffffffff)
#define ELF64_R_INFO(sym,type)		(((sym) << 32) + (type))

/* Program segment header.  */

typedef struct
{
  Elf32_Word	p_type;			/* Segment type */
  Elf32_Off	p_offset;		/* Segment file offset */
  Elf32_Addr	p_vaddr;		/* Segment virtual address */
  Elf32_Addr	p_paddr;		/* Segment physical address */
  Elf32_Word	p_filesz;		/* Segment size in file */
  Elf32_Word	p_memsz;		/* Segment size in memory */
  Elf32_Word	p_flags;		/* Segment flags */
  Elf32_Word	p_align;		/* Segment alignment */
} Elf32_Phdr;

typedef struct
{
  Elf64_Word	p_type;			/* Segment type */
  Elf64_Word	p_flags;		/* Segment flags */
  Elf64_Off	p_offset;		/* Segment file offset */
  Elf64_Addr	p_vaddr;		/* Segment virtual address */
  Elf64_Addr	p_paddr;		/* Segment physical address */
  Elf64_Xword	p_filesz;		/* Segment size in file */
  Elf64_Xword	p_memsz;		/* Segment size in memory */
  Elf64_Xword	p_align;		/* Segment alignment */
} Elf64_Phdr;

/* Legal values for p_type (segment type).  */

#define	PT_NULL		0		/* Program header table entry unused */
#define PT_LOAD		1		/* Loadable program segment */
#define PT_DYNAMIC	2		/* Dynamic linking information */
#define PT_INTERP	3		/* Program interpreter */
#define PT_NOTE		4		/* Auxiliary information */
#define PT_SHLIB	5		/* Reserved */
#define PT_PHDR		6		/* Entry for header table itself */
#define	PT_NUM		7		/* Number of defined types.  */
#define PT_LOPROC	0x70000000	/* Start of processor-specific */
#define PT_HIPROC	0x7fffffff	/* End of processor-specific */

/* Legal values for p_flags (segment flags).  */

#define PF_X		(1 << 0)	/* Segment is executable */
#define PF_W		(1 << 1)	/* Segment is writable */
#define PF_R		(1 << 2)	/* Segment is readable */
#define PF_MASKPROC	0xf0000000	/* Processor-specific */

/* Legal values for note segment descriptor types for core files. */

#define NT_PRSTATUS	1		/* Contains copy of prstatus struct */
#define NT_FPREGSET	2		/* Contains copy of fpregset struct */
#define NT_PRPSINFO	3		/* Contains copy of prpsinfo struct */

/* Legal values for the  note segment descriptor types for object files.  */

#define NT_VERSION	1		/* Contains a version string.  */


/* Dynamic section entry.  */

typedef struct
{
  Elf32_Sword	d_tag;			/* Dynamic entry type */
  union
    {
      Elf32_Word d_val;			/* Integer value */
      Elf32_Addr d_ptr;			/* Address value */
    } d_un;
} Elf32_Dyn;

typedef struct
{
  Elf64_Sxword	d_tag;			/* Dynamic entry type */
  union
    {
      Elf64_Xword d_val;		/* Integer value */
      Elf64_Addr d_ptr;			/* Address value */
    } d_un;
} Elf64_Dyn;

/* Legal values for d_tag (dynamic entry type).  */

#define DT_NULL		0		/* Marks end of dynamic section */
#define DT_NEEDED	1		/* Name of needed library */
#define DT_PLTRELSZ	2		/* Size in bytes of PLT relocs */
#define DT_PLTGOT	3		/* Processor defined value */
#define DT_HASH		4		/* Address of symbol hash table */
#define DT_STRTAB	5		/* Address of string table */
#define DT_SYMTAB	6		/* Address of symbol table */
#define DT_RELA		7		/* Address of Rela relocs */
#define DT_RELASZ	8		/* Total size of Rela relocs */
#define DT_RELAENT	9		/* Size of one Rela reloc */
#define DT_STRSZ	10		/* Size of string table */
#define DT_SYMENT	11		/* Size of one symbol table entry */
#define DT_INIT		12		/* Address of init function */
#define DT_FINI		13		/* Address of termination function */
#define DT_SONAME	14		/* Name of shared object */
#define DT_RPATH	15		/* Library search path */
#define DT_SYMBOLIC	16		/* Start symbol search here */
#define DT_REL		17		/* Address of Rel relocs */
#define DT_RELSZ	18		/* Total size of Rel relocs */
#define DT_RELENT	19		/* Size of one Rel reloc */
#define DT_PLTREL	20		/* Type of reloc in PLT */
#define DT_DEBUG	21		/* For debugging; unspecified */
#define DT_TEXTREL	22		/* Reloc might modify .text */
#define DT_JMPREL	23		/* Address of PLT relocs */
#define	DT_NUM		24		/* Number used */
#define DT_LOPROC	0x70000000	/* Start of processor-specific */
#define DT_HIPROC	0x7fffffff	/* End of processor-specific */
#define	DT_PROCNUM	DT_MIPS_NUM	/* Most used by any processor */

/* The versioning entry types.  The next are defined as part of the
   GNU extension.  */
#define DT_VERSYM	0x6ffffff0

/* These were chosen by Sun.  */
#define	DT_VERDEF	0x6ffffffc	/* Address of version definition
					   table */
#define	DT_VERDEFNUM	0x6ffffffd	/* Number of version definitions */
#define	DT_VERNEED	0x6ffffffe	/* Address of table with needed
					   versions */
#define	DT_VERNEEDNUM	0x6fffffff	/* Number of needed versions */
#define DT_VERSIONTAGIDX(tag)	(DT_VERNEEDNUM - (tag))	/* Reverse order! */
#define DT_VERSIONTAGNUM 16

/* Sun added these machine-independent extensions in the "processor-specific"
   range.  Be compatible.  */
#define DT_AUXILIARY    0x7ffffffd      /* Shared object to load before self */
#define DT_FILTER       0x7fffffff      /* Shared object to get values from */
#define DT_EXTRATAGIDX(tag)	((Elf32_Word)-((Elf32_Sword) (tag) <<1>>1)-1)
#define DT_EXTRANUM	3

/* Version definition sections.  */

typedef struct
{
  Elf32_Half	vd_version;		/* Version revision */
  Elf32_Half	vd_flags;		/* Version information */
  Elf32_Half	vd_ndx;			/* Version Index */
  Elf32_Half	vd_cnt;			/* Number of associated aux entries */
  Elf32_Word	vd_hash;		/* Version name hash value */
  Elf32_Word	vd_aux;			/* Offset in bytes to verdaux array */
  Elf32_Word	vd_next;		/* Offset in bytes to next verdef
					   entry */
} Elf32_Verdef;

/* XXX We have no information what types should be used for 64 bit
   architectures.  What is following is only an intelligent guess.  */
typedef struct
{
  Elf64_Half	vd_version;		/* Version revision */
  Elf64_Half	vd_flags;		/* Version information */
  Elf64_Half	vd_ndx;			/* Version Index */
  Elf64_Half	vd_cnt;			/* Number of associated aux entries */
  Elf64_Word	vd_hash;		/* Version name hash value */
  Elf64_Word	vd_aux;			/* Offset in bytes to verdaux array */
  Elf64_Word	vd_next;		/* Offset in bytes to next verdef
					   entry */
} Elf64_Verdef;

/* Legal values for vd_version (version revision).  */
#define VER_DEF_NONE	0		/* No version */
#define VER_DEF_CURRENT	1		/* Current version */
#define VER_DEF_NUM	2		/* Given version number */

/* Legal values for vd_flags (version information flags).  */
#define VER_FLG_BASE	0x1		/* Version definition of file itself */
#define VER_FLG_WEAK	0x2		/* Weak version identifier */

/* Auxialiary version information.  */

typedef struct
{
  Elf32_Addr	vda_name;		/* Version or dependency names */
  Elf32_Word	vda_next;		/* Offset in bytes to next verdaux
					   entry */
} Elf32_Verdaux;

/* XXX We have no information what types should be used for 64 bit
   architectures.  What is following is only an intelligent guess.  */
typedef struct
{
  Elf64_Addr	vda_name;		/* Version or dependency names */
  Elf64_Word	vda_next;		/* Offset in bytes to next verdaux
					   entry */
} Elf64_Verdaux;

/* Version dependency section.  */

typedef struct
{
  Elf32_Half	vn_version;		/* Version of structure */
  Elf32_Half	vn_cnt;			/* Number of associated aux entries */
  Elf32_Addr	vn_file;		/* Offset of filename for this
					   dependency */
  Elf32_Word	vn_aux;			/* Offset in bytes to vernaux array */
  Elf32_Word	vn_next;		/* Offset in bytes to next verneed
					   entry */
} Elf32_Verneed;

/* XXX We have no information what types should be used for 64 bit
   architectures.  What is following is only an intelligent guess.  */
typedef struct
{
  Elf64_Half	vn_version;		/* Version of structure */
  Elf64_Half	vn_cnt;			/* Number of associated aux entries */
  Elf64_Addr	vn_file;		/* Offset of filename for this
					   dependency */
  Elf64_Word	vn_aux;			/* Offset in bytes to vernaux array */
  Elf64_Word	vn_next;		/* Offset in bytes to next verneed
					   entry */
} Elf64_Verneed;

/* Legal values for vn_version (version revision).  */
#define VER_NEED_NONE	 0		/* No version */
#define VER_NEED_CURRENT 1		/* Current version */
#define VER_NEED_NUM	 2		/* Given version number */

/* Auxiliary needed version information.  */

typedef struct
{
  Elf32_Word	vna_hash;		/* Hash value of dependency name */
  Elf32_Half	vna_flags;		/* Dependency specific information */
  Elf32_Half	vna_other;		/* Unused */
  Elf32_Addr	vna_name;		/* Dependency name string offset */
  Elf32_Word	vna_next;		/* Offset in bytes to next vernaux
					   entry */
} Elf32_Vernaux;

/* XXX We have no information what types should be used for 64 bit
   architectures.  What is following is only an intelligent guess.  */
typedef struct
{
  Elf64_Word	vna_hash;		/* Hash value of dependency name */
  Elf64_Half	vna_flags;		/* Dependency specific information */
  Elf64_Half	vna_other;		/* Unused */
  Elf64_Addr	vna_name;		/* Dependency name string offset */
  Elf64_Word	vna_next;		/* Offset in bytes to next vernaux
					   entry */
} Elf64_Vernaux;

/* Legal values for vna_flags.  */
#define VER_FLG_WEAK	0x2		/* Weak verison identifier */


/* Auxiliary vector.  */

/* This vector is normally only used by the program interpreter.  The
   usual definition in an ABI supplement uses the name auxv_t.  The
   vector is not usually defined in a standard <elf.h> file, but it
   can't hurt.  We rename it to avoid conflicts.  The sizes of these
   types are an arrangement between the exec server and the program
   interpreter, so we don't fully specify them here.  */

typedef struct
{
  int a_type;			/* Entry type */
  union
    {
      long int a_val;		/* Integer value */
      void *a_ptr;		/* Pointer value */
      void (*a_fcn) (void);	/* Function pointer value */
    } a_un;
} Elf32_auxv_t;

typedef struct
{
  long int a_type;		/* Entry type */
  union
    {
      long int a_val;		/* Integer value */
      void *a_ptr;		/* Pointer value */
      void (*a_fcn) (void);	/* Function pointer value */
    } a_un;
} Elf64_auxv_t;

/* Legal values for a_type (entry type).  */

#define AT_NULL		0		/* End of vector */
#define AT_IGNORE	1		/* Entry should be ignored */
#define AT_EXECFD	2		/* File descriptor of program */
#define AT_PHDR		3		/* Program headers for program */
#define AT_PHENT	4		/* Size of program header entry */
#define AT_PHNUM	5		/* Number of program headers */
#define AT_PAGESZ	6		/* System page size */
#define AT_BASE		7		/* Base address of interpreter */
#define AT_FLAGS	8		/* Flags */
#define AT_ENTRY	9		/* Entry point of program */
#define AT_NOTELF	10		/* Program is not ELF */
#define AT_UID		11		/* Real uid */
#define AT_EUID		12		/* Effective uid */
#define AT_GID		13		/* Real gid */
#define AT_EGID		14		/* Effective gid */

/* Motorola 68k specific definitions.  */

/* m68k relocs.  */

#define R_68K_NONE	0		/* No reloc */
#define R_68K_32	1		/* Direct 32 bit  */
#define R_68K_16	2		/* Direct 16 bit  */
#define R_68K_8		3		/* Direct 8 bit  */
#define R_68K_PC32	4		/* PC relative 32 bit */
#define R_68K_PC16	5		/* PC relative 16 bit */
#define R_68K_PC8	6		/* PC relative 8 bit */
#define R_68K_GOT32	7		/* 32 bit PC relative GOT entry */
#define R_68K_GOT16	8		/* 16 bit PC relative GOT entry */
#define R_68K_GOT8	9		/* 8 bit PC relative GOT entry */
#define R_68K_GOT32O	10		/* 32 bit GOT offset */
#define R_68K_GOT16O	11		/* 16 bit GOT offset */
#define R_68K_GOT8O	12		/* 8 bit GOT offset */
#define R_68K_PLT32	13		/* 32 bit PC relative PLT address */
#define R_68K_PLT16	14		/* 16 bit PC relative PLT address */
#define R_68K_PLT8	15		/* 8 bit PC relative PLT address */
#define R_68K_PLT32O	16		/* 32 bit PLT offset */
#define R_68K_PLT16O	17		/* 16 bit PLT offset */
#define R_68K_PLT8O	18		/* 8 bit PLT offset */
#define R_68K_COPY	19		/* Copy symbol at runtime */
#define R_68K_GLOB_DAT	20		/* Create GOT entry */
#define R_68K_JMP_SLOT	21		/* Create PLT entry */
#define R_68K_RELATIVE	22		/* Adjust by program base */

/* Intel 80386 specific definitions.  */

/* i386 relocs.  */

#define R_386_NONE	0		/* No reloc */
#define R_386_32	1		/* Direct 32 bit  */
#define R_386_PC32	2		/* PC relative 32 bit */
#define R_386_GOT32	3		/* 32 bit GOT entry */
#define R_386_PLT32	4		/* 32 bit PLT address */
#define R_386_COPY	5		/* Copy symbol at runtime */
#define R_386_GLOB_DAT	6		/* Create GOT entry */
#define R_386_JMP_SLOT	7		/* Create PLT entry */
#define R_386_RELATIVE	8		/* Adjust by program base */
#define R_386_GOTOFF	9		/* 32 bit offset to GOT */
#define R_386_GOTPC	10		/* 32 bit PC relative offset to GOT */

/* SUN SPARC specific definitions.  */

/* SPARC relocs.  */

#define R_SPARC_NONE	0		/* No reloc */
#define R_SPARC_8	1		/* Direct 8 bit */
#define R_SPARC_16	2		/* Direct 16 bit */
#define R_SPARC_32	3		/* Direct 32 bit */
#define R_SPARC_DISP8	4		/* PC relative 8 bit */
#define R_SPARC_DISP16	5		/* PC relative 16 bit */
#define R_SPARC_DISP32	6		/* PC relative 32 bit */
#define R_SPARC_WDISP30	7		/* PC relative 30 bit shifted */
#define R_SPARC_WDISP22	8		/* PC relative 22 bit shifted */
#define R_SPARC_HI22	9		/* High 22 bit */
#define R_SPARC_22	10		/* Direct 22 bit */
#define R_SPARC_13	11		/* Direct 13 bit */
#define R_SPARC_LO10	12		/* Truncated 10 bit */
#define R_SPARC_GOT10	13		/* Truncated 10 bit GOT entry */
#define R_SPARC_GOT13	14		/* 13 bit GOT entry */
#define R_SPARC_GOT22	15		/* 22 bit GOT entry shifted */
#define R_SPARC_PC10	16		/* PC relative 10 bit truncated */
#define R_SPARC_PC22	17		/* PC relative 22 bit shifted */
#define R_SPARC_WPLT30	18		/* 30 bit PC relative PLT address */
#define R_SPARC_COPY	19		/* Copy symbol at runtime */
#define R_SPARC_GLOB_DAT 20		/* Create GOT entry */
#define R_SPARC_JMP_SLOT 21		/* Create PLT entry */
#define R_SPARC_RELATIVE 22		/* Adjust by program base */
#define R_SPARC_UA32	23		/* Direct 32 bit unaligned */

/* MIPS R3000 specific definitions.  */

/* Legal values for e_flags field of Elf32_Ehdr.  */

#define EF_MIPS_NOREORDER 1		/* A .noreorder directive was used */
#define EF_MIPS_PIC	  2		/* Contains PIC code */
#define EF_MIPS_CPIC	  4		/* Uses PIC calling sequence */
#define EF_MIPS_ARCH	  0xf0000000	/* MIPS architecture level */

/* Legal values for MIPS architecture level.  */

#define E_MIPS_ARCH_1	  0x00000000	/* -mips1 code.  */
#define E_MIPS_ARCH_2	  0x10000000	/* -mips2 code.  */
#define E_MIPS_ARCH_3	  0x20000000	/* -mips3 code.  */
#define E_MIPS_ARCH_4	  0x30000000	/* -mips4 code.  */
#define E_MIPS_ARCH_5	  0x40000000	/* -mips5 code.  */

/* Special section indices.  */

#define SHN_MIPS_ACOMMON 0xff00		/* Allocated common symbols */
#define SHN_MIPS_TEXT	 0xff01		/* Allocated test symbols.  */
#define SHN_MIPS_DATA	 0xff02		/* Allocated data symbols.  */
#define SHN_MIPS_SCOMMON 0xff03		/* Small common symbols */
#define SHN_MIPS_SUNDEFINED 0xff04	/* Small undefined symbols */

/* Legal values for sh_type field of Elf32_Shdr.  */

#define SHT_MIPS_LIBLIST  0x70000000	/* Shared objects used in link */
#define SHT_MIPS_CONFLICT 0x70000002	/* Conflicting symbols */
#define SHT_MIPS_GPTAB	  0x70000003	/* Global data area sizes */
#define SHT_MIPS_UCODE	  0x70000004	/* Reserved for SGI/MIPS compilers */
#define SHT_MIPS_DEBUG	  0x70000005	/* MIPS ECOFF debugging information */
#define SHT_MIPS_REGINFO  0x70000006	/* Register usage information */
#define SHT_MIPS_OPTIONS  0x7000000d	/* Miscellaneous options.  */
#define SHT_MIPS_DWARF    0x7000001e	/* DWARF debugging information.  */
#define SHT_MIPS_EVENTS	  0x70000021	/* Event section.  */

/* Legal values for sh_flags field of Elf32_Shdr.  */

#define SHF_MIPS_GPREL	0x10000000	/* Must be part of global data area */

/* Entries found in sections of type SHT_MIPS_GPTAB.  */

typedef union
{
  struct
    {
      Elf32_Word gt_current_g_value;	/* -G value used for compilation */
      Elf32_Word gt_unused;		/* Not used */
    } gt_header;			/* First entry in section */
  struct
    {
      Elf32_Word gt_g_value;		/* If this value were used for -G */
      Elf32_Word gt_bytes;		/* This many bytes would be used */
    } gt_entry;				/* Subsequent entries in section */
} Elf32_gptab;

/* Entry found in sections of type SHT_MIPS_REGINFO.  */

typedef struct
{
  Elf32_Word	ri_gprmask;		/* General registers used */
  Elf32_Word	ri_cprmask[4];		/* Coprocessor registers used */
  Elf32_Sword	ri_gp_value;		/* $gp register value */
} Elf32_RegInfo;

/* MIPS relocs.  */

#define R_MIPS_NONE	0		/* No reloc */
#define R_MIPS_16	1		/* Direct 16 bit */
#define R_MIPS_32	2		/* Direct 32 bit */
#define R_MIPS_REL32	3		/* PC relative 32 bit */
#define R_MIPS_26	4		/* Direct 26 bit shifted */
#define R_MIPS_HI16	5		/* High 16 bit */
#define R_MIPS_LO16	6		/* Low 16 bit */
#define R_MIPS_GPREL16	7		/* GP relative 16 bit */
#define R_MIPS_LITERAL	8		/* 16 bit literal entry */
#define R_MIPS_GOT16	9		/* 16 bit GOT entry */
#define R_MIPS_PC16	10		/* PC relative 16 bit */
#define R_MIPS_CALL16	11		/* 16 bit GOT entry for function */
#define R_MIPS_GPREL32	12		/* GP relative 32 bit */

/* Legal values for p_type field of Elf32_Phdr.  */

#define PT_MIPS_REGINFO	0x70000000	/* Register usage information */
#define PT_MIPS_RTPROC  0x70000001	/* Runtime procedure table. */
#define PT_MIPS_OPTIONS 0x70000002

/* Legal values for d_tag field of Elf32_Dyn.  */

#define DT_MIPS_RLD_VERSION  0x70000001	/* Runtime linker interface version */
#define DT_MIPS_TIME_STAMP   0x70000002	/* Timestamp */
#define DT_MIPS_ICHECKSUM    0x70000003	/* Checksum */
#define DT_MIPS_IVERSION     0x70000004	/* Version string (string tbl index) */
#define DT_MIPS_FLAGS	     0x70000005	/* Flags */
#define DT_MIPS_BASE_ADDRESS 0x70000006	/* Base address */
#define DT_MIPS_CONFLICT     0x70000008	/* Address of CONFLICT section */
#define DT_MIPS_LIBLIST	     0x70000009	/* Address of LIBLIST section */
#define DT_MIPS_LOCAL_GOTNO  0x7000000a	/* Number of local GOT entries */
#define DT_MIPS_CONFLICTNO   0x7000000b	/* Number of CONFLICT entries */
#define DT_MIPS_LIBLISTNO    0x70000010	/* Number of LIBLIST entries */
#define DT_MIPS_SYMTABNO     0x70000011	/* Number of DYNSYM entries */
#define DT_MIPS_UNREFEXTNO   0x70000012	/* First external DYNSYM */
#define DT_MIPS_GOTSYM	     0x70000013	/* First GOT entry in DYNSYM */
#define DT_MIPS_HIPAGENO     0x70000014	/* Number of GOT page table entries */
#define DT_MIPS_RLD_MAP	     0x70000016	/* Address of run time loader map.  */
#define DT_MIPS_NUM	     0x17

/* Legal values for DT_MIPS_FLAG Elf32_Dyn entry.  */

#define RHF_NONE		   0		/* No flags */
#define RHF_QUICKSTART		   (1 << 0)	/* Use quickstart */
#define RHF_NOTPOT		   (1 << 1)	/* Hash size not power of 2 */
#define RHF_NO_LIBRARY_REPLACEMENT (1 << 2)	/* Ignore LD_LIBRARY_PATH */

/* Entries found in sections of type SHT_MIPS_LIBLIST.  */

typedef struct
{
  Elf32_Word	l_name;			/* Name (string table index) */
  Elf32_Word	l_time_stamp;		/* Timestamp */
  Elf32_Word	l_checksum;		/* Checksum */
  Elf32_Word	l_version;		/* Interface version */
  Elf32_Word	l_flags;		/* Flags */
} Elf32_Lib;

/* Legal values for l_flags.  */

#define LL_EXACT_MATCH	  (1 << 0)	/* Require exact match */
#define LL_IGNORE_INT_VER (1 << 1)	/* Ignore interface version */

/* Entries found in sections of type SHT_MIPS_CONFLICT.  */

typedef Elf32_Addr Elf32_Conflict;


/* HPPA specific definitions.  */

/* Legal values for sh_type field of Elf32_Shdr.  */

#define SHT_PARISC_GOT		0x70000000 /* GOT for external data.  */
#define SHT_PARISC_ARCH		0x70000001 /* Architecture extensions.  */
#define SHT_PARISC_GLOBAL	0x70000002 /* Definition of $global$.  */
#define SHT_PARISC_MILLI	0x70000003 /* Millicode routines.  */
#define SHT_PARISC_UNWIND	0x70000004 /* Unwind information.  */
#define SHT_PARISC_PLT		0x70000005 /* Procedure linkage table.  */
#define SHT_PARISC_SDATA	0x70000006 /* Short initialized data.  */
#define SHT_PARISC_SBSS		0x70000007 /* Short uninitialized data.  */
#define SHT_PARISC_SYMEXTN	0x70000008 /* Argument/relocation info.  */
#define SHT_PARISC_STUBS	0x70000009 /* Linker stubs.  */

/* Legal values for sh_flags field of Elf32_Shdr.  */

#define SHF_PARISC_SHORT	0x20000000 /* Section with short addressing. */

/* Legal values for ST_TYPE subfield of st_info (symbol type).  */

#define STT_PARISC_MILLICODE	13	/* Millicode function entry point.  */


/* Alpha specific declarations.  */

/* Alpha relocs.  */

#define R_ALPHA_NONE		0	/* No reloc */
#define R_ALPHA_REFLONG		1	/* Direct 32 bit */
#define R_ALPHA_REFQUAD		2	/* Direct 64 bit */
#define R_ALPHA_GPREL32		3	/* GP relative 32 bit */
#define R_ALPHA_LITERAL		4	/* GP relative 16 bit w/optimization */
#define R_ALPHA_LITUSE		5	/* Optimization hint for LITERAL */
#define R_ALPHA_GPDISP		6	/* Add displacement to GP */
#define R_ALPHA_BRADDR		7	/* PC+4 relative 23 bit shifted */
#define R_ALPHA_HINT		8	/* PC+4 relative 16 bit shifted */
#define R_ALPHA_SREL16		9	/* PC relative 16 bit */
#define R_ALPHA_SREL32		10	/* PC relative 32 bit */
#define R_ALPHA_SREL64		11	/* PC relative 64 bit */
#define R_ALPHA_OP_PUSH		12	/* OP stack push */
#define R_ALPHA_OP_STORE	13	/* OP stack pop and store */
#define R_ALPHA_OP_PSUB		14	/* OP stack subtract */
#define R_ALPHA_OP_PRSHIFT	15	/* OP stack right shift */
#define R_ALPHA_GPVALUE		16
#define R_ALPHA_GPRELHIGH	17
#define R_ALPHA_GPRELLOW	18
#define R_ALPHA_IMMED_GP_16	19
#define R_ALPHA_IMMED_GP_HI32	20
#define R_ALPHA_IMMED_SCN_HI32	21
#define R_ALPHA_IMMED_BR_HI32	22
#define R_ALPHA_IMMED_LO32	23
#define R_ALPHA_COPY		24	/* Copy symbol at runtime */
#define R_ALPHA_GLOB_DAT	25	/* Create GOT entry */
#define R_ALPHA_JMP_SLOT	26	/* Create PLT entry */
#define R_ALPHA_RELATIVE	27	/* Adjust by program base */


/* PowerPC specific declarations */

/* PowerPC relocations defined by the ABIs */
#define R_PPC_NONE		0
#define R_PPC_ADDR32		1
#define R_PPC_ADDR24		2
#define R_PPC_ADDR16		3
#define R_PPC_ADDR16_LO		4
#define R_PPC_ADDR16_HI		5
#define R_PPC_ADDR16_HA		6
#define R_PPC_ADDR14		7
#define R_PPC_ADDR14_BRTAKEN	8
#define R_PPC_ADDR14_BRNTAKEN	9
#define R_PPC_REL24		10
#define R_PPC_REL14		11
#define R_PPC_REL14_BRTAKEN	12
#define R_PPC_REL14_BRNTAKEN	13
#define R_PPC_GOT16		14
#define R_PPC_GOT16_LO		15
#define R_PPC_GOT16_HI		16
#define R_PPC_GOT16_HA		17
#define R_PPC_PLTREL24		18
#define R_PPC_COPY		19
#define R_PPC_GLOB_DAT		20
#define R_PPC_JMP_SLOT		21
#define R_PPC_RELATIVE		22
#define R_PPC_LOCAL24PC		23
#define R_PPC_UADDR32		24
#define R_PPC_UADDR16		25
#define R_PPC_REL32		26
#define R_PPC_PLT32		27
#define R_PPC_PLTREL32		28
#define R_PPC_PLT16_LO		29
#define R_PPC_PLT16_HI		30
#define R_PPC_PLT16_HA		31
#define R_PPC_SDAREL16		32
#define R_PPC_SECTOFF		33
#define R_PPC_SECTOFF_LO	34
#define R_PPC_SECTOFF_HI	35
#define R_PPC_SECTOFF_HA	36

/* The remaining relocs are from the Embedded ELF ABI, and are not
   in the SVR4 ELF ABI.  */
#define R_PPC_EMB_NADDR32	101
#define R_PPC_EMB_NADDR16	102
#define R_PPC_EMB_NADDR16_LO	103
#define R_PPC_EMB_NADDR16_HI	104
#define R_PPC_EMB_NADDR16_HA	105
#define R_PPC_EMB_SDAI16	106
#define R_PPC_EMB_SDA2I16	107
#define R_PPC_EMB_SDA2REL	108
#define R_PPC_EMB_SDA21		109
#define R_PPC_EMB_MRKREF	110
#define R_PPC_EMB_RELSEC16	111
#define R_PPC_EMB_RELST_LO	112
#define R_PPC_EMB_RELST_HI	113
#define R_PPC_EMB_RELST_HA	114
#define R_PPC_EMB_BIT_FLD	115
#define R_PPC_EMB_RELSDA	116

/* This is a phony reloc to handle any old fashioned TOC16 references
   that may still be in object files.  */
#define R_PPC_TOC16		255

__END_DECLS

#endif	/* elf.h */