#ifndef _UAPI_LINUX_ELF_H
  #define _UAPI_LINUX_ELF_H
  
  #include <linux/types.h>
  #include <linux/elf-em.h>
  
  /* 32-bit ELF base types. */
  typedef __u32	Elf32_Addr;
  typedef __u16	Elf32_Half;
  typedef __u32	Elf32_Off;
  typedef __s32	Elf32_Sword;
  typedef __u32	Elf32_Word;
  
  /* 64-bit ELF base types. */
  typedef __u64	Elf64_Addr;
  typedef __u16	Elf64_Half;
  typedef __s16	Elf64_SHalf;
  typedef __u64	Elf64_Off;
  typedef __s32	Elf64_Sword;
  typedef __u32	Elf64_Word;
  typedef __u64	Elf64_Xword;
  typedef __s64	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_TLS     7               /* Thread local storage segment */
  #define PT_LOOS    0x60000000      /* OS-specific */
  #define PT_HIOS    0x6fffffff      /* OS-specific */
  #define PT_LOPROC  0x70000000
  #define PT_HIPROC  0x7fffffff
  #define PT_GNU_EH_FRAME		0x6474e550
  
  #define PT_GNU_STACK	(PT_LOOS + 0x474e551)
  
  /*
   * Extended Numbering
   *
   * If the real number of program header table entries is larger than
   * or equal to PN_XNUM(0xffff), it is set to sh_info field of the
   * section header at index 0, and PN_XNUM is set to e_phnum
   * field. Otherwise, the section header at index 0 is zero
   * initialized, if it exists.
   *
   * Specifications are available in:
   *
   * - Oracle: Linker and Libraries.
   *   Part No: 817–1984–19, August 2011.
   *   http://docs.oracle.com/cd/E18752_01/pdf/817-1984.pdf
   *
   * - System V ABI AMD64 Architecture Processor Supplement
   *   Draft Version 0.99.4,
   *   January 13, 2010.
   *   http://www.cs.washington.edu/education/courses/cse351/12wi/supp-docs/abi.pdf
   */
  #define PN_XNUM 0xffff
  
  /* 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
  
  /* 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_ENCODING	32
  #define OLD_DT_LOOS	0x60000000
  #define DT_LOOS		0x6000000d
  #define DT_HIOS		0x6ffff000
  #define DT_VALRNGLO	0x6ffffd00
  #define DT_VALRNGHI	0x6ffffdff
  #define DT_ADDRRNGLO	0x6ffffe00
  #define DT_ADDRRNGHI	0x6ffffeff
  #define DT_VERSYM	0x6ffffff0
  #define DT_RELACOUNT	0x6ffffff9
  #define DT_RELCOUNT	0x6ffffffa
  #define DT_FLAGS_1	0x6ffffffb
  #define DT_VERDEF	0x6ffffffc
  #define	DT_VERDEFNUM	0x6ffffffd
  #define DT_VERNEED	0x6ffffffe
  #define	DT_VERNEEDNUM	0x6fffffff
  #define OLD_DT_HIOS     0x6fffffff
  #define DT_LOPROC	0x70000000
  #define DT_HIPROC	0x7fffffff
  
  /* 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 STT_COMMON  5
  #define STT_TLS     6
  
  #define ELF_ST_BIND(x)		((x) >> 4)
  #define ELF_ST_TYPE(x)		(((unsigned int) x) & 0xf)
  #define ELF32_ST_BIND(x)	ELF_ST_BIND(x)
  #define ELF32_ST_TYPE(x)	ELF_ST_TYPE(x)
  #define ELF64_ST_BIND(x)	ELF_ST_BIND(x)
  #define ELF64_ST_TYPE(x)	ELF_ST_TYPE(x)
  
  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(i)			((i) >> 32)
  #define ELF64_R_TYPE(i)			((i) & 0xffffffff)
  
  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[EI_NIDENT];	/* 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
  
  /* sh_flags */
  #define SHF_WRITE	0x1
  #define SHF_ALLOC	0x2
  #define SHF_EXECINSTR	0x4
  #define SHF_MASKPROC	0xf0000000
  
  /* 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
   
  typedef struct elf32_shdr {
    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_OSABI	7
  #define	EI_PAD		8
  
  #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
  
  #define ELFOSABI_NONE	0
  #define ELFOSABI_LINUX	3
  
  #ifndef ELF_OSABI
  #define ELF_OSABI ELFOSABI_NONE
  #endif
  
  /*
   * Notes used in ET_CORE. Architectures export some of the arch register sets
   * using the corresponding note types via the PTRACE_GETREGSET and
   * PTRACE_SETREGSET requests.
   */
  #define NT_PRSTATUS	1
  #define NT_PRFPREG	2
  #define NT_PRPSINFO	3
  #define NT_TASKSTRUCT	4
  #define NT_AUXV		6
  /*
   * Note to userspace developers: size of NT_SIGINFO note may increase
   * in the future to accomodate more fields, don't assume it is fixed!
   */
  #define NT_SIGINFO      0x53494749
  #define NT_FILE         0x46494c45
  #define NT_PRXFPREG     0x46e62b7f      /* copied from gdb5.1/include/elf/common.h */
  #define NT_PPC_VMX	0x100		/* PowerPC Altivec/VMX registers */
  #define NT_PPC_SPE	0x101		/* PowerPC SPE/EVR registers */
  #define NT_PPC_VSX	0x102		/* PowerPC VSX registers */
  #define NT_386_TLS	0x200		/* i386 TLS slots (struct user_desc) */
  #define NT_386_IOPERM	0x201		/* x86 io permission bitmap (1=deny) */
  #define NT_X86_XSTATE	0x202		/* x86 extended state using xsave */
  #define NT_S390_HIGH_GPRS	0x300	/* s390 upper register halves */
  #define NT_S390_TIMER	0x301		/* s390 timer register */
  #define NT_S390_TODCMP	0x302		/* s390 TOD clock comparator register */
  #define NT_S390_TODPREG	0x303		/* s390 TOD programmable register */
  #define NT_S390_CTRS	0x304		/* s390 control registers */
  #define NT_S390_PREFIX	0x305		/* s390 prefix register */
  #define NT_S390_LAST_BREAK	0x306	/* s390 breaking event address */
  #define NT_S390_SYSTEM_CALL	0x307	/* s390 system call restart data */
  #define NT_S390_TDB	0x308		/* s390 transaction diagnostic block */
  #define NT_ARM_VFP	0x400		/* ARM VFP/NEON registers */
  #define NT_ARM_TLS	0x401		/* ARM TLS register */
  #define NT_ARM_HW_BREAK	0x402		/* ARM hardware breakpoint registers */
  #define NT_ARM_HW_WATCH	0x403		/* ARM hardware watchpoint registers */
  #define NT_METAG_CBUF	0x500		/* Metag catch buffer registers */
  #define NT_METAG_RPIPE	0x501		/* Metag read pipeline state */
  #define NT_METAG_TLS	0x502		/* Metag TLS pointer */
  
  
  /* 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;
  
  #endif /* _UAPI_LINUX_ELF_H */