4. Jump with Indirect Operand

• An indirect operand provides a pointer to the target address.

• The indirect jump instructions use a 32-bit address for the target rather than a displacement.

• However, this address is not encoded in the instruction itself.

• Instead, it is either in a register or in a memory doubleword.

• For example,

                jmp edx
  

  means to jump to the address stored in EDX.

                .DATA
      jump_anywhere
                DWORD ?
                
                .CODE
                ;
                jmp eax              ; register indirect jump
                ;
                jmp quit_program     ; unconditional relative jump
                ;
                jmp jump_anywhere    ; memory indirect jump
                ;
                jmp dword ptr [edi]  ; jump via pointer to a variable that contains an address
      quit_program:
                ;
  

• Sample one: jump_demo.asm

• Sample two: jump_table.asm