Relocations

• tables created by the assembler and linker recording how the code or data depends on load location or symbol value

  • R_X86_64_RELATIVE

    rewrite with load location plus some addend

  • R_X86_64_64

    rewrite with symbol value plus some addend

• relocations used by dynamic linker can be split into two groups:

  • immediate: affect data items, pointers to functions

  • lazy: function calls to or from shared objects

    • function call is initially directed to the dynamic linker instead