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#ifndef _LINUX_ELF_H

#define _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 /* _LINUX_ELF_H */