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elf_x86.inc
133 lines (121 loc) · 2.63 KB
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elf_x86.inc
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macro align value
{
rb (value - 1) - ($ + value - 1) mod value
}
macro enum start, step, [items]
{
common
local count
count = start
forward
items = count
count = count + step
}
enum 0x0, 0x1, \
ELFCLASSNONE,\
ELFCLASS32,\
ELFCLASS64
enum 0x0, 0x1, \
ELFDATANONE,\
ELFDATA2LSB,\
ELFDATA2MSB
enum 0x0, 0x1,\
EV_NONE,\
EV_CURRENT
enum 0x0, 0x1,\
ET_NONE,\
ET_REL,\
ET_EXEC,\
ET_DYN,\
ET_CORE
ET_LOPROC = 0xFF00
ET_HIPROC = 0xFFFF
enum 0x0, 0x1, \
EM_NONE,\
EM_M32,\
EM_SPARC,\
EM_386,\
EM_68K,\
EM_88K,\
EM_RESERVED,\
EM_860,\
EM_MIPS
SHN_UNDEF = 0x0
SHN_LORESERVE = 0xFF00
SHN_LOPROC = 0xFF00
SHN_HIPROC = 0xFF1F
SHN_ABS = 0xFFF1
SHN_COMMON = 0xFFF2
SHN_HIRESERVE = 0xFFFF
enum 0x0, 0x1, \
PT_NULL,\
PT_LOAD,\
PT_DYNAMIC,\
PT_INTERP,\
PT_NOTE,\
PT_SHLIB,\
PT_PHDR
PT_LOOS = 0x60000000
PT_HIOS = 0x6FFFFFFF
PT_LOPROC = 0x70000000
PT_HIPROC = 0x7FFFFFFF
enum 0x0, 0x1, \
PF_NONE,\
PF_W,\
PF_WX,\
PF_R,\
PF_RX,\
PF_RW,\
PF_RWX
struc e_ident elf_class, elf_data, elf_version {
e_ident_entry:
.EI_MAG0 db 0x7F
.EI_MAG3 db 'ELF'
.EI_CLASS db elf_class
.EI_DATA db elf_data
.EI_VERSION db elf_version
rb e_ident_entry + 0x10 - $
}
struc elf_file_header entry, program_header, section_header, ph_entry_size, ph_entries_num, sh_entry_size, sh_entries_num {
local ..elf_file_header_entry
..elf_file_header_entry:
.e_ident e_ident ELFCLASS32, ELFDATA2LSB, EV_CURRENT
.e_type dw ET_EXEC
.e_machine dw EM_386
.e_version dd EV_NONE;EV_CURRENT
.e_entry dd entry
if program_header > 0x0
.e_phoff dd program_header - ..elf_file_header_entry
else
.e_phoff dd 0x0
end if
if section_header > 0x0
.e_shoff dd section_header - ..elf_file_header_entry
else
.e_shoff dd 0x0
end if
.e_flags dd 0x0
if program_header > 0x0
.e_ehsize dw program_header - ..elf_file_header_entry
else
.e_ehsize dw 0x0
end if
.e_phentsize dw ph_entry_size
.e_phnum dw ph_entries_num
.e_shentsize dw sh_entry_size
.e_shnum dw sh_entries_num
.e_shstrndx dw SHN_UNDEF
}
struc elf_program_header elf_base, elf_end, elf_bss, flags {
local ..elf_program_header_entry
..elf_program_header_entry:
.p_type dd PT_LOAD
.p_offset dd 0
.p_vaddr dd elf_base
.p_paddr dd 0
.p_filesz dd elf_bss - elf_base
.p_memsz dd elf_end - elf_base
.p_flags dd flags
.p_align dd 0x1000
elf_program_header_entry_size = $ - ..elf_program_header_entry
}