path: root/mdk-stage1/dietlibc/include/elf.h

#ifndef _ELF_H
#define _ELF_H

#include <inttypes.h>

/* 32-bit ELF base types. */
typedef uint32_t	Elf32_Addr;
typedef uint16_t	Elf32_Half;
typedef uint32_t	Elf32_Off;
typedef int32_t	Elf32_Sword;
typedef uint32_t	Elf32_Word;

/* 64-bit ELF base types. */
typedef uint64_t	Elf64_Addr;
typedef uint16_t	Elf64_Half;
typedef int16_t		Elf64_SHalf;
typedef uint64_t	Elf64_Off;
typedef int32_t		Elf64_Sword;
typedef uint32_t	Elf64_Word;
typedef uint64_t	Elf64_Xword;
typedef int64_t		Elf64_Sxword;

/* These constants are for the segment types stored in the image headers */
#define PT_NULL		0
#define PT_LOAD		1
#define PT_DYNAMIC	2
#define PT_INTERP	3
#define PT_NOTE		4
#define PT_SHLIB	5
#define PT_PHDR		6
#define PT_LOPROC	0x70000000
#define PT_HIPROC	0x7fffffff
#define PT_MIPS_REGINFO	0x70000000

/* Flags in the e_flags field of the header */
#define EF_MIPS_NOREORDER	0x00000001
#define EF_MIPS_PIC		0x00000002
#define EF_MIPS_CPIC		0x00000004
#define EF_MIPS_ARCH		0xf0000000

/* These constants define the different elf file types */
#define ET_NONE		0
#define ET_REL		1
#define ET_EXEC		2
#define ET_DYN		3
#define ET_CORE		4
#define ET_LOPROC	0xff00
#define ET_HIPROC	0xffff

/* These constants define the various ELF target machines */
#define EM_NONE		 0
#define EM_M32		 1
#define EM_SPARC	 2
#define EM_386		 3
#define EM_68K		 4
#define EM_88K		 5
#define EM_486		 6	/* Perhaps disused */
#define EM_860		 7

#define EM_MIPS		 8	/* MIPS R3000 (officially, big-endian only) */
#define EM_MIPS_RS4_BE	10	/* MIPS R4000 big-endian */

#define EM_PARISC	15	/* HPPA */
#define EM_SPARC32PLUS	18	/* Sun's "v8plus" */
#define EM_PPC		20	/* PowerPC */
#define EM_S390		22	/* IBM S/390 */

#define EM_ARM		40	/* ARM */
#define EM_SH		42	/* SuperH */
#define EM_SPARCV9	43	/* SPARC v9 64-bit */
#define EM_IA_64	50	/* HP/Intel IA-64 */
#define EM_X86_64	62	/* AMD x86-64 */
#define EM_CRIS		76	/* Axis Communications 32-bit embedded processor */

/*
 * This is an interim value that we will use until the committee comes
 * up with a final number.
 */
#define EM_ALPHA	0x9026

/*
 * This is the old interim value for S/390 architecture
 */
#define EM_S390_OLD	0xA390

/* This is the info that is needed to parse the dynamic section of the file */
#define DT_NULL			0
#define DT_NEEDED		1
#define DT_PLTRELSZ		2
#define DT_PLTGOT		3
#define DT_HASH			4
#define DT_STRTAB		5
#define DT_SYMTAB		6
#define DT_RELA			7
#define DT_RELASZ		8
#define DT_RELAENT		9
#define DT_STRSZ		10
#define DT_SYMENT		11
#define DT_INIT			12
#define DT_FINI			13
#define DT_SONAME		14
#define DT_RPATH 		15
#define DT_SYMBOLIC		16
#define DT_REL			17
#define DT_RELSZ		18
#define DT_RELENT		19
#define DT_PLTREL		20
#define DT_DEBUG		21
#define DT_TEXTREL		22
#define DT_JMPREL		23
#define DT_NUM			24
#define DT_LOPROC		0x70000000
#define DT_HIPROC		0x7fffffff
#define DT_MIPS_RLD_VERSION	0x70000001
#define DT_MIPS_TIME_STAMP	0x70000002
#define DT_MIPS_ICHECKSUM	0x70000003
#define DT_MIPS_IVERSION	0x70000004
#define DT_MIPS_FLAGS		0x70000005
  #define RHF_NONE		  0
  #define RHF_HARDWAY		  1
  #define RHF_NOTPOT		  2
#define DT_MIPS_BASE_ADDRESS	0x70000006
#define DT_MIPS_CONFLICT	0x70000008
#define DT_MIPS_LIBLIST		0x70000009
#define DT_MIPS_LOCAL_GOTNO	0x7000000a
#define DT_MIPS_CONFLICTNO	0x7000000b
#define DT_MIPS_LIBLISTNO	0x70000010
#define DT_MIPS_SYMTABNO	0x70000011
#define DT_MIPS_UNREFEXTNO	0x70000012
#define DT_MIPS_GOTSYM		0x70000013
#define DT_MIPS_HIPAGENO	0x70000014
#define DT_MIPS_RLD_MAP		0x70000016

/* This info is needed when parsing the symbol table */
#define STB_LOCAL	0
#define STB_GLOBAL	1
#define STB_WEAK	2

#define STT_NOTYPE	0
#define STT_OBJECT	1
#define STT_FUNC	2
#define STT_SECTION	3
#define STT_FILE	4

#define ELF32_ST_BIND(x) ((x) >> 4)
#define ELF32_ST_TYPE(x) (((unsigned int) x) & 0xf)

#define ELF64_ST_BIND(val)		ELF32_ST_BIND (val)
#define ELF64_ST_TYPE(val)		ELF32_ST_TYPE (val)

/* Symbolic values for the entries in the auxiliary table
   put on the initial stack */
#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 */
#define AT_PLATFORM	15	/* string identifying CPU for optimizations */
#define AT_HWCAP	16	/* arch dependent hints at CPU capabilities */
#define AT_CLKTCK	17	/* frequency at which times() increments */

typedef struct dynamic{
  Elf32_Sword d_tag;
  union{
    Elf32_Sword	d_val;
    Elf32_Addr	d_ptr;
  } d_un;
} Elf32_Dyn;

typedef struct {
  Elf64_Sxword d_tag;		/* entry tag value */
  union {
    Elf64_Xword d_val;
    Elf64_Addr d_ptr;
  } d_un;
} Elf64_Dyn;

/* The following are used with relocations */
#define ELF32_R_SYM(x)  ((x) >> 8)
#define ELF32_R_TYPE(x) ((x) & 0xff)

#define ELF64_R_SYM(x)  ((x) >> 32)
#define ELF64_R_TYPE(x) ((x) & 0xffffffff)

#define R_386_NONE		0
#define R_386_32		1
#define R_386_PC32		2
#define R_386_GOT32		3
#define R_386_PLT32		4
#define R_386_COPY		5
#define R_386_GLOB_DAT		6
#define R_386_JMP_SLOT		7
#define R_386_RELATIVE		8
#define R_386_GOTOFF		9
#define R_386_GOTPC		10
#define R_386_NUM		11

#define R_MIPS_NONE		0
#define R_MIPS_16		1
#define R_MIPS_32		2
#define R_MIPS_REL32		3
#define R_MIPS_26		4
#define R_MIPS_HI16		5
#define R_MIPS_LO16		6
#define R_MIPS_GPREL16		7
#define R_MIPS_LITERAL		8
#define R_MIPS_GOT16		9
#define R_MIPS_PC16		10
#define R_MIPS_CALL16		11
#define R_MIPS_GPREL32		12
/* The remaining relocs are defined on Irix, although they are not
   in the MIPS ELF ABI.  */
#define R_MIPS_UNUSED1		13
#define R_MIPS_UNUSED2		14
#define R_MIPS_UNUSED3		15
#define R_MIPS_SHIFT5		16
#define R_MIPS_SHIFT6		17
#define R_MIPS_64		18
#define R_MIPS_GOT_DISP		19
#define R_MIPS_GOT_PAGE		20
#define R_MIPS_GOT_OFST		21
/*
 * The following two relocation types are specified in the MIPS ABI
 * conformance guide version 1.2 but not yet in the psABI.
 */
#define R_MIPS_GOTHI16		22
#define R_MIPS_GOTLO16		23
#define R_MIPS_SUB		24
#define R_MIPS_INSERT_A		25
#define R_MIPS_INSERT_B		26
#define R_MIPS_DELETE		27
#define R_MIPS_HIGHER		28
#define R_MIPS_HIGHEST		29
/*
 * The following two relocation types are specified in the MIPS ABI
 * conformance guide version 1.2 but not yet in the psABI.
 */
#define R_MIPS_CALLHI16		30
#define R_MIPS_CALLLO16		31
/*
 * This range is reserved for vendor specific relocations.
 */
#define R_MIPS_LOVENDOR		100
#define R_MIPS_HIVENDOR		127


/*
 * Sparc ELF relocation types
 */
#define R_SPARC_NONE		0
#define R_SPARC_8		1
#define R_SPARC_16		2
#define R_SPARC_32		3
#define R_SPARC_DISP8		4
#define R_SPARC_DISP16		5
#define R_SPARC_DISP32		6
#define R_SPARC_WDISP30		7
#define R_SPARC_WDISP22		8
#define R_SPARC_HI22		9
#define R_SPARC_22		10
#define R_SPARC_13		11
#define R_SPARC_LO10		12
#define R_SPARC_GOT10		13
#define R_SPARC_GOT13		14
#define R_SPARC_GOT22		15
#define R_SPARC_PC10		16
#define R_SPARC_PC22		17
#define R_SPARC_WPLT30		18
#define R_SPARC_COPY		19
#define R_SPARC_GLOB_DAT	20
#define R_SPARC_JMP_SLOT	21
#define R_SPARC_RELATIVE	22
#define R_SPARC_UA32		23
#define R_SPARC_PLT32		24
#define R_SPARC_HIPLT22		25
#define R_SPARC_LOPLT10		26
#define R_SPARC_PCPLT32		27
#define R_SPARC_PCPLT22		28
#define R_SPARC_PCPLT10		29
#define R_SPARC_10		30
#define R_SPARC_11		31
#define R_SPARC_WDISP16		40
#define R_SPARC_WDISP19		41
#define R_SPARC_7		43
#define R_SPARC_5		44
#define R_SPARC_6		45

/* Bits present in AT_HWCAP, primarily for Sparc32.  */

#define HWCAP_SPARC_FLUSH	 1	/* CPU supports flush instruction. */
#define HWCAP_SPARC_STBAR	 2
#define HWCAP_SPARC_SWAP	 4
#define HWCAP_SPARC_MULDIV	 8
#define HWCAP_SPARC_V9		16
#define HWCAP_SPARC_ULTRA3	32

/*
 * 68k ELF relocation types
 */
#define R_68K_NONE	0
#define R_68K_32	1
#define R_68K_16	2
#define R_68K_8		3
#define R_68K_PC32	4
#define R_68K_PC16	5
#define R_68K_PC8	6
#define R_68K_GOT32	7
#define R_68K_GOT16	8
#define R_68K_GOT8	9
#define R_68K_GOT32O	10
#define R_68K_GOT16O	11
#define R_68K_GOT8O	12
#define R_68K_PLT32	13
#define R_68K_PLT16	14
#define R_68K_PLT8	15
#define R_68K_PLT32O	16
#define R_68K_PLT16O	17
#define R_68K_PLT8O	18
#define R_68K_COPY	19
#define R_68K_GLOB_DAT	20
#define R_68K_JMP_SLOT	21
#define R_68K_RELATIVE	22

/*
 * Alpha ELF relocation types
 */
#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 */

/* Legal values for e_flags field of Elf64_Ehdr.  */

#define EF_ALPHA_32BIT		1	/* All addresses are below 2GB */

/*
 * PowerPC
 */

/* Values for Elf32/64_Ehdr.e_flags.  */
#define EF_PPC_EMB		0x80000000	/* PowerPC embedded flag */

/* Cygnus local bits below */
#define EF_PPC_RELOCATABLE	0x00010000	/* PowerPC -mrelocatable flag*/
#define EF_PPC_RELOCATABLE_LIB	0x00008000	/* PowerPC -mrelocatable-lib flag */

/* PowerPC relocations defined by the ABIs */
#define R_PPC_NONE		0
#define R_PPC_ADDR32		1	/* 32bit absolute address */
#define R_PPC_ADDR24		2	/* 26bit address, 2 bits ignored.  */
#define R_PPC_ADDR16		3	/* 16bit absolute address */
#define R_PPC_ADDR16_LO		4	/* lower 16bit of absolute address */
#define R_PPC_ADDR16_HI		5	/* high 16bit of absolute address */
#define R_PPC_ADDR16_HA		6	/* adjusted high 16bit */
#define R_PPC_ADDR14		7	/* 16bit address, 2 bits ignored */
#define R_PPC_ADDR14_BRTAKEN	8
#define R_PPC_ADDR14_BRNTAKEN	9
#define R_PPC_REL24		10	/* PC relative 26 bit */
#define R_PPC_REL14		11	/* PC relative 16 bit */
#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
/* Keep this the last entry.  */
#define R_PPC_NUM		37

/* 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	/* 16 bit offset in SDA */
#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	/* 16 bit relative offset in SDA */

/* Diab tool relocations.  */
#define R_PPC_DIAB_SDA21_LO	180	/* like EMB_SDA21, but lower 16 bit */
#define R_PPC_DIAB_SDA21_HI	181	/* like EMB_SDA21, but high 16 bit */
#define R_PPC_DIAB_SDA21_HA	182	/* like EMB_SDA21, adjusted high 16 */
#define R_PPC_DIAB_RELSDA_LO	183	/* like EMB_RELSDA, but lower 16 bit */
#define R_PPC_DIAB_RELSDA_HI	184	/* like EMB_RELSDA, but high 16 bit */
#define R_PPC_DIAB_RELSDA_HA	185	/* like EMB_RELSDA, adjusted high 16 */

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

/*
 * ARM ELF relocation types
 */
#define R_ARM_NONE		0	/* No reloc */
#define R_ARM_PC24		1	/* PC relative 26 bit branch */
#define R_ARM_ABS32		2	/* Direct 32 bit  */
#define R_ARM_REL32		3	/* PC relative 32 bit */
#define R_ARM_PC13		4
#define R_ARM_ABS16		5	/* Direct 16 bit */
#define R_ARM_ABS12		6	/* Direct 12 bit */
#define R_ARM_THM_ABS5		7
#define R_ARM_ABS8		8	/* Direct 8 bit */
#define R_ARM_SBREL32		9
#define R_ARM_THM_PC22		10
#define R_ARM_THM_PC8		11
#define R_ARM_AMP_VCALL9	12
#define R_ARM_SWI24		13
#define R_ARM_THM_SWI8		14
#define R_ARM_XPC25		15
#define R_ARM_THM_XPC22		16
#define R_ARM_COPY		20	/* Copy symbol at runtime */
#define R_ARM_GLOB_DAT		21	/* Create GOT entry */
#define R_ARM_JUMP_SLOT		22	/* Create PLT entry */
#define R_ARM_RELATIVE		23	/* Adjust by program base */
#define R_ARM_GOTOFF		24	/* 32 bit offset to GOT */
#define R_ARM_GOTPC		25	/* 32 bit PC relative offset to GOT */
#define R_ARM_GOT32		26	/* 32 bit GOT entry */
#define R_ARM_PLT32		27	/* 32 bit PLT address */
#define R_ARM_GNU_VTENTRY	100
#define R_ARM_GNU_VTINHERIT	101
#define R_ARM_THM_PC11		102	/* thumb unconditional branch */
#define R_ARM_THM_PC9		103	/* thumb conditional branch */
#define R_ARM_RXPC25		249
#define R_ARM_RSBREL32		250
#define R_ARM_THM_RPC22		251
#define R_ARM_RREL32		252
#define R_ARM_RABS22		253
#define R_ARM_RPC24		254
#define R_ARM_RBASE		255
/* Keep this the last entry.  */
#define R_ARM_NUM		256

/* Processor specific flags for the ELF header e_flags field.  */
#define EF_ARM_RELEXEC		0x01
#define EF_ARM_HASENTRY		0x02
#define EF_ARM_INTERWORK	0x04
#define EF_ARM_APCS_26		0x08
#define EF_ARM_APCS_FLOAT	0x10
#define EF_ARM_PIC		0x20
#define EF_ALIGN8		0x40		/* 8-bit structure alignment is in use */
#define EF_NEW_ABI		0x80
#define EF_OLD_ABI		0x100

/* Additional symbol types for Thumb */
#define STT_ARM_TFUNC		0xd

/* AMD x86-64 relocations.  */
#define R_X86_64_NONE		0	/* No reloc */
#define R_X86_64_64		1	/* Direct 64 bit  */
#define R_X86_64_PC32		2	/* PC relative 32 bit signed */
#define R_X86_64_GOT32		3	/* 32 bit GOT entry */
#define R_X86_64_PLT32		4	/* 32 bit PLT address */
#define R_X86_64_COPY		5	/* Copy symbol at runtime */
#define R_X86_64_GLOB_DAT	6	/* Create GOT entry */
#define R_X86_64_JUMP_SLOT	7	/* Create PLT entry */
#define R_X86_64_RELATIVE	8	/* Adjust by program base */
#define R_X86_64_GOTPCREL	9	/* 32 bit signed PC relative
					   offset to GOT */
#define R_X86_64_32		10	/* Direct 32 bit zero extended */
#define R_X86_64_32S		11	/* Direct 32 bit sign extended */
#define R_X86_64_16		12	/* Direct 16 bit zero extended */
#define R_X86_64_PC16		13	/* 16 bit sign extended pc relative */
#define R_X86_64_8		14	/* Direct 8 bit sign extended  */
#define R_X86_64_PC8		15	/* 8 bit sign extended pc relative */
#define R_X86_64_DTPMOD64	16	/* ID of module containing symbol */
#define R_X86_64_DTPOFF64	17	/* Offset in module's TLS block */
#define R_X86_64_TPOFF64	18	/* Offset in initial TLS block */
#define R_X86_64_TLSGD		19	/* 32 bit signed PC relative offset
					   to two GOT entries for GD symbol */
#define R_X86_64_TLSLD		20	/* 32 bit signed PC relative offset
					   to two GOT entries for LD symbol */
#define R_X86_64_DTPOFF32	21	/* Offset in TLS block */
#define R_X86_64_GOTTPOFF	22	/* 32 bit signed PC relative offset
					   to GOT entry for IE symbol */
#define R_X86_64_TPOFF32	23	/* Offset in initial TLS block */

#define R_X86_64_NUM		24

typedef struct elf32_rel {
  Elf32_Addr	r_offset;
  Elf32_Word	r_info;
} Elf32_Rel;

typedef struct elf64_rel {
  Elf64_Addr	r_offset;		/* Location at which to apply the action */
  Elf64_Xword	r_info;		/* index and type of relocation */
} Elf64_Rel;

typedef struct elf32_rela{
  Elf32_Addr	r_offset;
  Elf32_Word	r_info;
  Elf32_Sword	r_addend;
} Elf32_Rela;

typedef struct elf64_rela {
  Elf64_Addr	r_offset;		/* Location at which to apply the action */
  Elf64_Xword	r_info;		/* index and type of relocation */
  Elf64_Sxword	r_addend;	/* Constant addend used to compute value */
} Elf64_Rela;

typedef struct elf32_sym{
  Elf32_Word	st_name;
  Elf32_Addr	st_value;
  Elf32_Word	st_size;
  unsigned char	st_info;
  unsigned char	st_other;
  Elf32_Half	st_shndx;
} Elf32_Sym;

typedef struct elf64_sym {
  Elf64_Word	st_name;		/* Symbol name, index in string tbl */
  unsigned char	st_info;	/* Type and binding attributes */
  unsigned char	st_other;	/* No defined meaning, 0 */
  Elf64_Half	st_shndx;		/* Associated section index */
  Elf64_Addr	st_value;		/* Value of the symbol */
  Elf64_Xword	st_size;		/* Associated symbol size */
} Elf64_Sym;


#define EI_NIDENT	16

typedef struct elf32_hdr{
  unsigned char	e_ident[EI_NIDENT];
  Elf32_Half	e_type;
  Elf32_Half	e_machine;
  Elf32_Word	e_version;
  Elf32_Addr	e_entry;  /* Entry point */
  Elf32_Off	e_phoff;
  Elf32_Off	e_shoff;
  Elf32_Word	e_flags;
  Elf32_Half	e_ehsize;
  Elf32_Half	e_phentsize;
  Elf32_Half	e_phnum;
  Elf32_Half	e_shentsize;
  Elf32_Half	e_shnum;
  Elf32_Half	e_shstrndx;
} Elf32_Ehdr;

typedef struct elf64_hdr {
  unsigned char	e_ident[16];		/* ELF "magic number" */
  Elf64_Half	e_type;
  Elf64_Half	e_machine;
  Elf64_Word	e_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;
  Elf64_Half	e_ehsize;
  Elf64_Half	e_phentsize;
  Elf64_Half	e_phnum;
  Elf64_Half	e_shentsize;
  Elf64_Half	e_shnum;
  Elf64_Half	e_shstrndx;
} Elf64_Ehdr;

/* These constants define the permissions on sections in the program
   header, p_flags. */
#define PF_R		0x4
#define PF_W		0x2
#define PF_X		0x1

typedef struct elf32_phdr{
  Elf32_Word	p_type;
  Elf32_Off	p_offset;
  Elf32_Addr	p_vaddr;
  Elf32_Addr	p_paddr;
  Elf32_Word	p_filesz;
  Elf32_Word	p_memsz;
  Elf32_Word	p_flags;
  Elf32_Word	p_align;
} Elf32_Phdr;

typedef struct elf64_phdr {
  Elf64_Word	p_type;
  Elf64_Word	p_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, file & memory */
} Elf64_Phdr;

/* sh_type */
#define SHT_NULL		0
#define SHT_PROGBITS		1
#define SHT_SYMTAB		2
#define SHT_STRTAB		3
#define SHT_RELA		4
#define SHT_HASH		5
#define SHT_DYNAMIC		6
#define SHT_NOTE		7
#define SHT_NOBITS		8
#define SHT_REL			9
#define SHT_SHLIB		10
#define SHT_DYNSYM		11
#define SHT_NUM			12
#define SHT_LOPROC		0x70000000
#define SHT_HIPROC		0x7fffffff
#define SHT_LOUSER		0x80000000
#define SHT_HIUSER		0xffffffff
#define SHT_MIPS_LIST		0x70000000
#define SHT_MIPS_CONFLICT	0x70000002
#define SHT_MIPS_GPTAB		0x70000003
#define SHT_MIPS_UCODE		0x70000004

/* sh_flags */
#define SHF_WRITE		0x1
#define SHF_ALLOC		0x2
#define SHF_EXECINSTR		0x4
#define SHF_MASKPROC		0xf0000000
#define SHF_MIPS_GPREL		0x10000000
#define SHF_ALPHA_GPREL		0x10000000

/* special section indexes */
#define SHN_UNDEF		0
#define SHN_LORESERVE		0xff00
#define SHN_LOPROC		0xff00
#define SHN_HIPROC		0xff1f
#define SHN_ABS			0xfff1
#define SHN_COMMON		0xfff2
#define SHN_HIRESERVE		0xffff
#define SHN_MIPS_ACCOMON	0xff00
 
typedef struct {
  Elf32_Word	sh_name;
  Elf32_Word	sh_type;
  Elf32_Word	sh_flags;
  Elf32_Addr	sh_addr;
  Elf32_Off	sh_offset;
  Elf32_Word	sh_size;
  Elf32_Word	sh_link;
  Elf32_Word	sh_info;
  Elf32_Word	sh_addralign;
  Elf32_Word	sh_entsize;
} Elf32_Shdr;

typedef struct elf64_shdr {
  Elf64_Word	sh_name;		/* Section name, index in string tbl */
  Elf64_Word	sh_type;		/* Type of section */
  Elf64_Xword	sh_flags;		/* Miscellaneous section attributes */
  Elf64_Addr	sh_addr;		/* Section virtual addr at execution */
  Elf64_Off	sh_offset;		/* Section file offset */
  Elf64_Xword	sh_size;		/* Size of section in bytes */
  Elf64_Word	sh_link;		/* Index of 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;

#define EI_MAG0		0		/* e_ident[] indexes */
#define EI_MAG1		1
#define EI_MAG2		2
#define EI_MAG3		3
#define EI_CLASS	4
#define EI_DATA		5
#define EI_VERSION	6
#define EI_PAD		7

#define ELFMAG0		0x7f		/* EI_MAG */
#define ELFMAG1		'E'
#define ELFMAG2		'L'
#define ELFMAG3		'F'
#define ELFMAG		"\177ELF"
#define SELFMAG		4

#define ELFCLASSNONE	0		/* EI_CLASS */
#define ELFCLASS32	1
#define ELFCLASS64	2
#define ELFCLASSNUM	3

#define ELFDATANONE	0		/* e_ident[EI_DATA] */
#define ELFDATA2LSB	1
#define ELFDATA2MSB	2

#define EV_NONE		0		/* e_version, EI_VERSION */
#define EV_CURRENT	1
#define EV_NUM		2

/* Notes used in ET_CORE */
#define NT_PRSTATUS	1
#define NT_PRFPREG	2
#define NT_PRPSINFO	3
#define NT_TASKSTRUCT	4
#define NT_PRFPXREG	20

/* Note header in a PT_NOTE section */
typedef struct elf32_note {
  Elf32_Word	n_namesz;	/* Name size */
  Elf32_Word	n_descsz;	/* Content size */
  Elf32_Word	n_type;		/* Content type */
} Elf32_Nhdr;

/* Note header in a PT_NOTE section */
typedef struct elf64_note {
  Elf64_Word	n_namesz;	/* Name size */
  Elf64_Word	n_descsz;	/* Content size */
  Elf64_Word	n_type;		/* Content type */
} Elf64_Nhdr;

#if ELF_CLASS == ELFCLASS32

extern Elf32_Dyn _DYNAMIC [];
#define elfhdr		elf32_hdr
#define elf_phdr	elf32_phdr
#define elf_note	elf32_note

#else

extern Elf64_Dyn _DYNAMIC [];
#define elfhdr		elf64_hdr
#define elf_phdr	elf64_phdr
#define elf_note	elf64_note

#endif


#endif