MIPS Instructions

Arithmetic

Memory

Procedures

• Execution
  1. The control is transferred to the procedure (callee)
  2. The procedure executes until completion
  3. The control is transferred back to the main program
• MIPS-support
  • Special register to secure the return address: $ra
  • Jump instruction
    • jal (jump and link) save return address in $ra and jumps to start address of the procedure
    • jr (jump register) jumps to the provided in the register
    • jr $ra jump to the return address in the main program

Addressing

• Direct Addressing: Stores the address directly
• Base Addressing: Stores the address relative to another address
• PC-Relative Addressing: Address stored relative to the current program counter
• Pseudo-direct addressing: Concatenates the provided address with the upper 4 bits of the PC