libc

Browse Download file Permalink

/* $Id$ */

/* This file is part of DeforaOS System libc */

* Redistribution and use in source and binary forms, with or without

* modification, are permitted provided that the following conditions are

* met:

* 1. Redistributions of source code must retain the above copyright

* notice, this list of conditions and the following disclaimer.

* 2. Redistributions in binary form must reproduce the above copyright

* notice, this list of conditions and the following disclaimer in the

* documentation and/or other materials provided with the distribution.

* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS

* IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED

* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A

* PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT

* HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,

* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED

* TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR

* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF

* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING

* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS

* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */

#ifndef LIBC_ELF_H

# define LIBC_ELF_H

# include <stdint.h>

/* types */

/* helpers */

# ifdef ELFSIZE

# if ELFSIZE == 32

# define ELFCLASS ELFCLASS32

# define ELF_R_SYM(info) ELF32_R_SYM(info)

# define ELF_R_TYPE(info) ELF32_R_TYPE(info)

# define ELF_ST_TYPE(info) ELF32_ST_TYPE(info)

# define Elf_Addr Elf32_Addr

# define Elf_Dyn Elf32_Dyn

# define Elf_Ehdr Elf32_Ehdr

# define Elf_Off Elf32_Off

# define Elf_Phdr Elf32_Phdr

# define Elf_Shdr Elf32_Shdr

# define Elf_Rel Elf32_Rel

# define Elf_Rela Elf32_Rela

# define Elf_Sym Elf32_Sym

# define Elf_Word Elf32_Word

# define AuxInfo Aux32Info

# elif ELFSIZE == 64

# define ELFCLASS ELFCLASS64

# define ELF_R_SYM(info) ELF64_R_SYM(info)

# define ELF_R_TYPE(info) ELF64_R_TYPE(info)

# define ELF_ST_TYPE(info) ELF32_ST_TYPE(info)

# define Elf_Addr Elf64_Addr

# define Elf_Dyn Elf64_Dyn

# define Elf_Ehdr Elf64_Ehdr

# define Elf_Off Elf64_Off

# define Elf_Phdr Elf64_Phdr

# define Elf_Shdr Elf64_Shdr

# define Elf_Rel Elf64_Rel

# define Elf_Rela Elf64_Rela

# define Elf_Sym Elf64_Sym

# define Elf_Word Elf64_Word

# define AuxInfo Aux64Info

# endif /* ELFSIZE == 64 */

# endif /* ELFSIZE */

/* common */

typedef uint8_t Elf_Byte;

/* Elf32 */

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;

/* Elf64 */

typedef uint64_t Elf64_Addr;

typedef uint32_t Elf64_Half;

typedef uint64_t Elf64_Off;

typedef uint16_t Elf64_Quarter;

typedef int32_t Elf64_Shalf;

typedef int64_t Elf64_Sxword;

typedef uint32_t Elf64_Word;

typedef uint64_t Elf64_Xword;

/* Elf_Ehdr */

# define EI_MAG0 0

# 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 EI_NIDENT 16

/* mag */

# define ELFMAG0 0x7f

# define ELFMAG1 'E'

# define ELFMAG2 'L'

# define ELFMAG3 'F'

# define ELFMAG "\177ELF"

# define SELFMAG 4

/* class */

# define ELFCLASSNONE 0

# define ELFCLASS32 1

# define ELFCLASS64 2

/* data */

# define ELFDATANONE 0

# define ELFDATA2LSB 1

# define ELFDATA2MSB 2

/* version */

# define EV_NONE 0

# define EV_CURRENT 1

/* type */

# 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

/* machine */

# 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_860 7

# define EM_MIPS 8

# define EM_ARM 40

# define EM_SPARCV9 43

# define EM_X86_64 62

typedef struct _Elf32_Ehdr

{

unsigned char e_ident[EI_NIDENT];

Elf32_Half e_type;

Elf32_Half e_machine;

Elf32_Word e_version;

Elf32_Addr e_entry;

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_Ehdr

{

unsigned char e_ident[EI_NIDENT];

Elf64_Quarter e_type;

Elf64_Quarter e_machine;

Elf64_Half e_version;

Elf64_Addr e_entry;

Elf64_Off e_phoff;

Elf64_Off e_shoff;

Elf64_Half e_flags;

Elf64_Quarter e_ehsize;

Elf64_Quarter e_phentsize;

Elf64_Quarter e_phnum;

Elf64_Quarter e_shentsize;

Elf64_Quarter e_shnum;

Elf64_Quarter e_shstrndx;

} Elf64_Ehdr;

/* Elf_Shdr */

/* name */

# define SHN_UNDEF 0

# define SHN_ABS 0xfff1

# define SHN_COMMON 0xfff2

/* 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

/* flags */

# define SHF_WRITE 0x1

# define SHF_ALLOC 0x2

# define SHF_EXECINSTR 0x4

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_Half sh_name;

Elf64_Half sh_type;

Elf64_Xword sh_flags;

Elf64_Addr sh_addr;

Elf64_Off sh_offset;

Elf64_Xword sh_size;

Elf64_Half sh_link;

Elf64_Half sh_info;

Elf64_Xword sh_addralign;

Elf64_Xword sh_entsize;

} Elf64_Shdr;

/* Elf_Phdr */

/* type */

# 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

/* 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_Half p_type;

Elf64_Half p_flags;

Elf64_Off p_offset;

Elf64_Addr p_vaddr;

Elf64_Addr p_paddr;

Elf64_Xword p_filesz;

Elf64_Xword p_memsz;

Elf64_Xword p_align;

} Elf64_Phdr;

/* Elf_Rel */

# define ELF32_R_SYM(info) ((info) >> 8)

# define ELF32_R_TYPE(info) ((info) & 0xf)

# 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

typedef struct _Elf32_Rel

{

Elf32_Addr r_offset;

Elf32_Word r_info;

} Elf32_Rel;

# define ELF64_R_SYM(info) ((info) >> 32)

# define ELF64_R_TYPE(info) ((info) & 0xffffffff)

# define R_X86_64_NONE 0

# define R_X86_64_64 1

# define R_X86_64_PC32 2

# define R_X86_64_GOT32 3

# define R_X86_64_PLT32 4

# define R_X86_64_COPY 5

# define R_X86_64_GLOB_DAT 6

# define R_X86_64_JUMP_SLOT 7

# define R_X86_64_RELATIVE 8

# define R_X86_64_GOTPCREL 9

typedef struct _Elf64_Rel

{

Elf64_Addr r_offset;

Elf64_Xword r_info;

} Elf64_Rel;

/* Elf_Rela */

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;

Elf64_Xword r_info;

Elf64_Sxword r_addend;

} Elf64_Rela;

/* Elf_Sym */

/* name */

# define STN_UNDEF 0

/* info */

# define ELF_ST_BIND(info) (info >> 4)

# define ELF_ST_TYPE(info) (info & 0xf)

# define ELF32_ST_BIND(info) ELF_ST_BIND(info)

# define ELF32_ST_TYPE(info) ELF_ST_TYPE(info)

# define ELF64_ST_BIND(info) ELF_ST_BIND(info)

# define ELF64_ST_TYPE(info) ELF_ST_TYPE(info)

/* bind */

# define STB_LOCAL 0

# define STB_GLOBAL 1

# define STB_WEAK 2

# define STB_LOOS 10

# define STB_HIOS 12

# define STB_LOPROC 13

# define STB_HIPROC 15

/* type */

# define STT_NOTYPE 0

# define STT_OBJECT 1

# define STT_FUNC 2

# define STT_SECTION 3

# define STT_FILE 4

# define STT_NUM 5

# define STT_LOOS 10

# define STT_HIOS 12

# define STT_LOPROC 13

# define STT_HIPROC 15

typedef struct _Elf32_Sym

{

Elf32_Word st_name;

Elf32_Word st_value;

Elf32_Word st_size;

Elf_Byte st_info;

Elf_Byte st_other;

Elf32_Half st_shndx;

} Elf32_Sym;

typedef struct _Elf64_Sym

{

Elf64_Half st_name;

Elf_Byte st_info;

Elf_Byte st_other;

Elf64_Quarter st_shndx;

Elf64_Addr st_value;

Elf64_Xword st_size;

} Elf64_Sym;

/* Elf_Dyn */

/* tag */

# 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_BIND_NOW 24

# define DT_INIT_ARRAY 25

# define DT_FINI_ARRAY 26

# define DT_FINI_ARRAYSZ 27

# define DT_INIT_ARRAYSZ 28

# define DT_NUM 29

typedef struct _Elf32_Dyn

{

Elf32_Word d_tag;

union

{

Elf32_Addr d_ptr;

Elf32_Word d_val;

} d_un;

} Elf32_Dyn;

typedef struct _Elf64_Dyn {

Elf64_Xword d_tag;

union

{

Elf64_Addr d_ptr;

Elf64_Xword d_val;

} d_un;

} Elf64_Dyn;

/* AuxInfo */

/* type */

# define AT_NULL 0

# define AT_IGNORE 1

# define AT_EXECFD 2

# define AT_PHDR 3

# define AT_PHENT 4

# define AT_PHNUM 5

# define AT_PAGESZ 6

# define AT_BASE 7

# define AT_FLAGS 8

# define AT_ENTRY 9

# define AT_STACKBASE 13

typedef struct _Aux32Info

{

Elf32_Word a_type;

Elf32_Word a_v;

} Aux32Info;

typedef struct _Aux64Info

{

Elf64_Word a_type;

Elf64_Xword a_v;

} Aux64Info;

#endif /* !LIBC_ELF_H */