ELF术语和概念

ELF相关术语

• ELF相关术语
  • Table表
    • GOT=Global Offset Table
    • SHT=Section Header Table
    • PLT=Procedure Linkage Table
    • PHT=Program Header Table
      • the kernel knows which section goes to which segment
  • 文件格式
    • COFF=Common object file format
    • 其他文件格式
      • Mach-O=Mach object file format
      • PE=Portable executable
  • BSS=Block Started by Symbol
    • The uninitialized data segment containing statically-allocated variables
  • DWARF
    • A standardized debugging data format
  • PC=Program counter
    • On x86, this is the same as IP (Instruction Pointer) register
  • section
    • SHF=Section header Flag
    • shstrtab = section header string table
  • 地址
    • RVA=Relative virtual address
    • VMA=Virtual Memory Area/Address
  • 加载
    • PIC=Position independent code
    • PIE=Position independent executable
    • REL=RELA=Relocation
  • TLS=Thread-Local Storage
    • DTV=Dynamic thread vector
    • access models
      • GD=Global Dynamic
        • dynamic TLS
      • IE=Initial Executable
        • static TLS with assigned offsets
      • LD=Local Dynamic
        • dynamic TLS of local symbols
      • LE=Local Executable
        • static TLS

ELF相关概念

• ELF相关概念
  • section
    • 不同的section
      • .text=代码段
      • .data=数据段：全局变量
      • .bss：未初始化的数据值
        • 【整理】ELF相关：.bss节
  • segment ~= VMA
    • Linux内核内部的概念
    • contains virtually contiguous page frame