30. Pseudo-addressing modes

• Macro instructions to read/write a specific address

  
       lw $t1, $t2          # $t1 = Memory[$t2]
       sw $t1, $t2          # Memory[$t2] = $t1
  
  

• Macro instructions for reading/writing with labels

  
       lw $t1, label        # $t1 = Memory[label]
       lw $t1, label+4      # $t1 = Memory[label+4]
       lw $t1, label($t2)   # $t1 = Memory[label+$t2]
       sw $t1, label        # Memory[label] = $t1
       sw $t1, label+4      # Memory[label+4] = $t1
       sw $t1, label($t2)   # Memory[label+$t2] = $t1