420 lines
8.3 KiB
C
420 lines
8.3 KiB
C
/* $Id$ */
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/* Copyright (c) 2018 Pierre Pronchery <khorben@defora.org> */
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/* This file is part of DeforaOS uKernel */
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#ifndef UKERNEL_ELF_H
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# define UKERNEL_ELF_H
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# include <stdint.h>
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/* types */
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/* helpers */
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# ifdef ELFSIZE
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# if ELFSIZE == 32
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# define ELFCLASS ELFCLASS32
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# define ELF_R_SYM(info) ELF32_R_SYM(info)
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# define ELF_R_TYPE(info) ELF32_R_TYPE(info)
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# define ELF_ST_TYPE(info) ELF32_ST_TYPE(info)
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# define Elf_Addr Elf32_Addr
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# define Elf_Dyn Elf32_Dyn
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# define Elf_Ehdr Elf32_Ehdr
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# define Elf_Off Elf32_Off
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# define Elf_Phdr Elf32_Phdr
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# define Elf_Shdr Elf32_Shdr
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# define Elf_Rel Elf32_Rel
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# define Elf_Rela Elf32_Rela
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# define Elf_Sym Elf32_Sym
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# define Elf_Word Elf32_Word
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# define AuxInfo Aux32Info
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# elif ELFSIZE == 64
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# define ELFCLASS ELFCLASS64
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# define ELF_R_SYM(info) ELF64_R_SYM(info)
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# define ELF_R_TYPE(info) ELF64_R_TYPE(info)
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# define ELF_ST_TYPE(info) ELF32_ST_TYPE(info)
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# define Elf_Addr Elf64_Addr
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# define Elf_Dyn Elf64_Dyn
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# define Elf_Ehdr Elf64_Ehdr
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# define Elf_Off Elf64_Off
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# define Elf_Phdr Elf64_Phdr
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# define Elf_Shdr Elf64_Shdr
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# define Elf_Rel Elf64_Rel
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# define Elf_Rela Elf64_Rela
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# define Elf_Sym Elf64_Sym
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# define Elf_Word Elf64_Word
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# define AuxInfo Aux64Info
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# endif /* ELFSIZE == 64 */
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# endif /* ELFSIZE */
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/* common */
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typedef uint8_t Elf_Byte;
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/* Elf32 */
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typedef uint32_t Elf32_Addr;
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typedef uint16_t Elf32_Half;
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typedef uint32_t Elf32_Off;
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typedef int32_t Elf32_Sword;
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typedef uint32_t Elf32_Word;
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/* Elf64 */
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typedef uint64_t Elf64_Addr;
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typedef uint32_t Elf64_Half;
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typedef uint64_t Elf64_Off;
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typedef uint16_t Elf64_Quarter;
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typedef int32_t Elf64_Shalf;
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typedef int64_t Elf64_Sxword;
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typedef uint32_t Elf64_Word;
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typedef uint64_t Elf64_Xword;
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/* Elf_Ehdr */
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# define EI_MAG0 0
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# define EI_MAG1 1
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# define EI_MAG2 2
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# define EI_MAG3 3
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# define EI_CLASS 4
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# define EI_DATA 5
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# define EI_VERSION 6
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# define EI_PAD 7
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# define EI_NIDENT 16
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/* mag */
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# define ELFMAG0 0x7f
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# define ELFMAG1 'E'
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# define ELFMAG2 'L'
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# define ELFMAG3 'F'
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# define ELFMAG "\177ELF"
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# define SELFMAG 4
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/* class */
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# define ELFCLASSNONE 0
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# define ELFCLASS32 1
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# define ELFCLASS64 2
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/* data */
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# define ELFDATANONE 0
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# define ELFDATA2LSB 1
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# define ELFDATA2MSB 2
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/* version */
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# define EV_NONE 0
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# define EV_CURRENT 1
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/* type */
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# define ET_NONE 0
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# define ET_REL 1
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# define ET_EXEC 2
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# define ET_DYN 3
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# define ET_CORE 4
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# define ET_LOPROC 0xff00
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# define ET_HIPROC 0xffff
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/* machine */
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# define EM_NONE 0
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# define EM_M32 1
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# define EM_SPARC 2
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# define EM_386 3
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# define EM_68K 4
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# define EM_88K 5
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# define EM_860 7
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# define EM_MIPS 8
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# define EM_ARM 40
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# define EM_SPARCV9 43
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# define EM_X86_64 62
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typedef struct _Elf32_Ehdr
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{
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unsigned char e_ident[EI_NIDENT];
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Elf32_Half e_type;
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Elf32_Half e_machine;
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Elf32_Word e_version;
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Elf32_Addr e_entry;
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Elf32_Off e_phoff;
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Elf32_Off e_shoff;
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Elf32_Word e_flags;
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Elf32_Half e_ehsize;
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Elf32_Half e_phentsize;
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Elf32_Half e_phnum;
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Elf32_Half e_shentsize;
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Elf32_Half e_shnum;
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Elf32_Half e_shstrndx;
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} Elf32_Ehdr;
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typedef struct _Elf64_Ehdr
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{
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unsigned char e_ident[EI_NIDENT];
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Elf64_Quarter e_type;
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Elf64_Quarter e_machine;
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Elf64_Half e_version;
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Elf64_Addr e_entry;
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Elf64_Off e_phoff;
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Elf64_Off e_shoff;
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Elf64_Half e_flags;
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Elf64_Quarter e_ehsize;
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Elf64_Quarter e_phentsize;
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Elf64_Quarter e_phnum;
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Elf64_Quarter e_shentsize;
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Elf64_Quarter e_shnum;
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Elf64_Quarter e_shstrndx;
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} Elf64_Ehdr;
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/* Elf_Shdr */
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/* name */
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# define SHN_UNDEF 0
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/* type */
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# define SHT_NULL 0
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# define SHT_PROGBIGS 1
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# define SHT_SYMTAB 2
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# define SHT_STRTAB 3
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# define SHT_RELA 4
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# define SHT_HASH 5
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# define SHT_DYNAMIC 6
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# define SHT_NOTE 7
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# define SHT_NOBITS 8
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# define SHT_REL 9
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# define SHT_SHLIB 10
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# define SHT_DYNSYM 11
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typedef struct _Elf32_Shdr
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{
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Elf32_Word sh_name;
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Elf32_Word sh_type;
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Elf32_Word sh_flags;
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Elf32_Addr sh_addr;
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Elf32_Off sh_offset;
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Elf32_Word sh_size;
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Elf32_Word sh_link;
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Elf32_Word sh_info;
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Elf32_Word sh_addralign;
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Elf32_Word sh_entsize;
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} Elf32_Shdr;
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typedef struct _Elf64_Shdr
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{
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Elf64_Half sh_name;
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Elf64_Half sh_type;
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Elf64_Xword sh_flags;
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Elf64_Addr sh_addr;
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Elf64_Off sh_offset;
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Elf64_Xword sh_size;
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Elf64_Half sh_link;
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Elf64_Half sh_info;
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Elf64_Xword sh_addralign;
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Elf64_Xword sh_entsize;
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} Elf64_Shdr;
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/* Elf_Phdr */
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/* type */
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# define PT_NULL 0
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# define PT_LOAD 1
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# define PT_DYNAMIC 2
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# define PT_INTERP 3
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# define PT_NOTE 4
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# define PT_SHLIB 5
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# define PT_PHDR 6
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# define PT_LOPROC 0x70000000
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# define PT_HIPROC 0x7fffffff
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/* flags */
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# define PF_R 0x4
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# define PF_W 0x2
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# define PF_X 0x1
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typedef struct _Elf32_Phdr
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{
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Elf32_Word p_type;
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Elf32_Off p_offset;
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Elf32_Addr p_vaddr;
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Elf32_Addr p_paddr;
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Elf32_Word p_filesz;
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Elf32_Word p_memsz;
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Elf32_Word p_flags;
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Elf32_Word p_align;
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} Elf32_Phdr;
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typedef struct _Elf64_Phdr
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{
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Elf64_Half p_type;
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Elf64_Half p_flags;
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Elf64_Off p_offset;
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Elf64_Addr p_vaddr;
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Elf64_Addr p_paddr;
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Elf64_Xword p_filesz;
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Elf64_Xword p_memsz;
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Elf64_Xword p_align;
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} Elf64_Phdr;
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/* Elf_Rel */
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# define ELF32_R_SYM(info) ((info) >> 8)
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# define ELF32_R_TYPE(info) ((info) & 0xf)
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# define R_386_NONE 0
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# define R_386_32 1
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# define R_386_PC32 2
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# define R_386_GOT32 3
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# define R_386_PLT32 4
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# define R_386_COPY 5
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# define R_386_GLOB_DAT 6
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# define R_386_JMP_SLOT 7
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# define R_386_RELATIVE 8
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# define R_386_GOTOFF 9
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# define R_386_GOTPC 10
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typedef struct _Elf32_Rel
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{
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Elf32_Addr r_offset;
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Elf32_Word r_info;
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} Elf32_Rel;
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# define ELF64_R_SYM(info) ((info) >> 32)
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# define ELF64_R_TYPE(info) ((info) & 0xffffffff)
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# define R_X86_64_GLOB_DAT 6
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# define R_X86_64_JUMP_SLOT 7
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# define R_X86_64_RELATIVE 8
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typedef struct _Elf64_Rel
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{
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Elf64_Addr r_offset;
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Elf64_Xword r_info;
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} Elf64_Rel;
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/* Elf_Rela */
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typedef struct _Elf32_Rela
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{
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Elf32_Addr r_offset;
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Elf32_Word r_info;
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Elf32_Sword r_addend;
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} Elf32_Rela;
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typedef struct _Elf64_Rela
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{
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Elf64_Addr r_offset;
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Elf64_Xword r_info;
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Elf64_Sxword r_addend;
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} Elf64_Rela;
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/* Elf_Sym */
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/* name */
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# define STN_UNDEF 0
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/* info */
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# define ELF_ST_BIND(info) (info >> 4)
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# define ELF_ST_TYPE(info) (info & 0xf)
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# define ELF32_ST_BIND(info) ELF_ST_BIND(info)
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# define ELF32_ST_TYPE(info) ELF_ST_TYPE(info)
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# define ELF64_ST_BIND(info) ELF_ST_BIND(info)
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# define ELF64_ST_TYPE(info) ELF_ST_TYPE(info)
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/* bind */
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# define STB_LOCAL 0
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# define STB_GLOBAL 1
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# define STB_WEAK 2
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# define STB_LOOS 10
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# define STB_HIOS 12
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# define STB_LOPROC 13
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# define STB_HIPROC 15
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/* type */
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# define STT_NOTYPE 0
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# define STT_OBJECT 1
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# define STT_FUNC 2
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# define STT_SECTION 3
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# define STT_FILE 4
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# define STT_NUM 5
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# define STT_LOOS 10
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# define STT_HIOS 12
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# define STT_LOPROC 13
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# define STT_HIPROC 15
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typedef struct _Elf32_Sym
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{
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Elf32_Word st_name;
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Elf32_Word st_value;
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Elf32_Word st_size;
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Elf_Byte st_info;
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Elf_Byte st_other;
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Elf32_Half st_shndx;
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} Elf32_Sym;
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typedef struct _Elf64_Sym
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{
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Elf64_Half st_name;
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Elf_Byte st_info;
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Elf_Byte st_other;
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Elf64_Quarter st_shndx;
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Elf64_Addr st_value;
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Elf64_Xword st_size;
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} Elf64_Sym;
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/* Elf_Dyn */
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/* tag */
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# define DT_NULL 0
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# define DT_NEEDED 1
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# define DT_PLTRELSZ 2
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# define DT_PLTGOT 3
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# define DT_HASH 4
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# define DT_STRTAB 5
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# define DT_SYMTAB 6
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# define DT_RELA 7
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# define DT_RELASZ 8
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# define DT_RELAENT 9
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# define DT_STRSZ 10
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# define DT_SYMENT 11
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# define DT_INIT 12
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# define DT_FINI 13
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# define DT_SONAME 14
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# define DT_RPATH 15
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# define DT_SYMBOLIC 16
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# define DT_REL 17
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# define DT_RELSZ 18
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# define DT_RELENT 19
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# define DT_PLTREL 20
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# define DT_DEBUG 21
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# define DT_TEXTREL 22
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# define DT_JMPREL 23
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# define DT_BIND_NOW 24
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# define DT_INIT_ARRAY 25
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# define DT_FINI_ARRAY 26
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# define DT_FINI_ARRAYSZ 27
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# define DT_INIT_ARRAYSZ 28
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# define DT_NUM 29
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typedef struct _Elf32_Dyn
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{
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Elf32_Word d_tag;
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union
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{
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Elf32_Addr d_ptr;
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Elf32_Word d_val;
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} d_un;
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} Elf32_Dyn;
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typedef struct _Elf64_Dyn {
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Elf64_Xword d_tag;
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union
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{
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Elf64_Addr d_ptr;
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Elf64_Xword d_val;
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} d_un;
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} Elf64_Dyn;
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/* AuxInfo */
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/* type */
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# define AT_NULL 0
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# define AT_IGNORE 1
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# define AT_EXECFD 2
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# define AT_PHDR 3
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# define AT_PHENT 4
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# define AT_PHNUM 5
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# define AT_PAGESZ 6
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# define AT_BASE 7
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# define AT_FLAGS 8
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# define AT_ENTRY 9
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# define AT_STACKBASE 13
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typedef struct _Aux32Info
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{
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Elf32_Word a_type;
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Elf32_Word a_v;
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} Aux32Info;
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typedef struct _Aux64Info
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{
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Elf64_Word a_type;
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Elf64_Xword a_v;
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} Aux64Info;
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#endif /* !UKERNEL_ELF_H */
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