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|
open Library
type elf32_addr = int32
type elf32_half = int
type elf32_off = int32
type elf32_sword = int32
type elf32_word = int32
type byte = int
(** ELF identification *)
type elfclass =
| ELFCLASSNONE
| ELFCLASS32
| ELFCLASS64
| ELFCLASSUNKNOWN
type elfdata =
| ELFDATANONE
| ELFDATA2LSB
| ELFDATA2MSB
| ELFDATAUNKNOWN
type ev =
| EV_NONE
| EV_CURRENT
| EV_UNKNOWN
type elf_identification =
{ ei_class : elfclass (* 32/64 bit *)
; ei_data : elfdata (* endianness *)
; ei_version : ev (* ELF header version *)
}
(** ELF header *)
type et =
| ET_NONE
| ET_REL
| ET_EXEC
| ET_DYN
| ET_CORE
| ET_UNKNOWN
type em =
| EM_NONE
| EM_M32
| EM_SPARC
| EM_386
| EM_68K
| EM_88K
| EM_860
| EM_MIPS
| EM_MIPS_RS4_BE
| EM_PPC
| EM_UNKNOWN
let shn_UNDEF = 0
let shn_ABS = 0xFFF1
let shn_COMMON = 0xFFF2
type elf32_ehdr =
{ e_ident : elf_identification (* Machine-independent data *)
; e_type : et (* Object file type *)
; e_machine : em (* Required architecture *)
; e_version : ev (* Object file version *)
; e_entry : elf32_addr (* Entry point virtual address *)
; e_phoff : elf32_off (* Program header table's offset *)
; e_shoff : elf32_off (* Section header table's offset *)
; e_flags : Bitstring.bitstring (* Processor-specific flags *)
; e_ehsize : elf32_half (* ELF header size *)
; e_phentsize : elf32_half (* Size of a program header's entry *)
; e_phnum : elf32_half (* Number of program header entries *)
; e_shentsize : elf32_half (* Size of a section header's entry *)
; e_shnum : elf32_half (* Number of section header entries *)
; e_shstrndx : elf32_half (* Section name string table index *)
}
(** ELF section header *)
type sht =
| SHT_NULL
| SHT_PROGBITS
| SHT_SYMTAB
| SHT_STRTAB
| SHT_RELA
| SHT_HASH
| SHT_DYNAMIC
| SHT_NOTE
| SHT_NOBITS
| SHT_REL
| SHT_SHLIB
| SHT_DYNSYM
| SHT_UNKNOWN
type elf32_shdr =
{ sh_name : string
; sh_type : sht
; sh_flags : elf32_word
; sh_addr : elf32_addr
; sh_offset : elf32_off
; sh_size : elf32_word
; sh_link : elf32_word
; sh_info : elf32_word
; sh_addralign : elf32_word
; sh_entsize : elf32_word
}
let shf_WRITE = 0x1l
let shf_ALLOC = 0x2l
let shf_EXECINSTR = 0x4l
type elf32_st_bind =
| STB_LOCAL
| STB_GLOBAL
| STB_WEAK
| STB_UNKNOWN
type elf32_st_type =
| STT_NOTYPE
| STT_OBJECT
| STT_FUNC
| STT_SECTION
| STT_FILE
| STT_UNKNOWN
type elf32_sym =
{ st_name : string
; st_value : elf32_addr
; st_size : elf32_word
; st_bind : elf32_st_bind
; st_type : elf32_st_type
; st_other : byte
; st_shndx : elf32_half
}
(** ELF program header *)
type p_type =
| PT_NULL
| PT_LOAD
| PT_DYNAMIC
| PT_INTERP
| PT_NOTE
| PT_SHLIB
| PT_PHDR
| PT_UNKNOWN
type elf32_phdr =
{ p_type : p_type
; p_offset : elf32_off
; p_vaddr : elf32_addr
; p_paddr : elf32_addr
; p_filesz : elf32_word
; p_memsz : elf32_word
; p_flags : bitstring
; p_align : elf32_word
}
(** ELF *)
type elf =
{ e_bitstring : bitstring
; e_hdr : elf32_ehdr
; e_shdra : elf32_shdr array
; e_phdra : elf32_phdr array
; e_symtab : elf32_sym array
; e_symtab_sndx : int (* section index of the symbol table *)
; e_sym_phdr : int32 -> int option (* fast sym -> phdr lookup *)
; e_syms_by_name : int list StringMap.t (* fast name -> sym lookup *)
}
|
