Shift left logical (sll) move all the bits to the left by the specified number of bits (fill empty space with 0s)

s11 $t2, $t0, 2

Shift right logical (srl) move all the bits to the right (again fill empty with 0s)

srl $t2, $t0, 2

Shift right arithmetic (sra) move all the bits to the right (fill empty bits with the sign bit, 1 for negative 0 for positive)

sra $t2, $t0, 2

000000110000 >> 2 # shift right 2
-> 000000001100 

Mips Labels

• LA- Load address
  • Syntax: LA $reg, label
  • Function- Stored the address the label is pointing at into the register
• LI- Load Immediate
  • Syntax- LI $reg, immediate
  • Function- Stores the given immediate value into the register
• Both of these instructions are actually a combination of 2 instructions (LUI and ORI)

if(i == j){
	k = k + i;
}
bne $t2, $t3, L1 #if (t2 != t3) goto l1
addu $t4, $t4, $t2

slt $t3, $t1, $t2
# set t3 to 1 if less t1 < t2. 
# else clea t3 to be 0

slti $t3, $t1, 100
# set t3 to be 1 if t1 < 100
# else clear t3 to be 0

• Translate into mips the following

if(a > b){
	c = a;
}

MIPS

slt $t5, $t3, $t2 # b < a
beq $t5, $zero, L1 # if t5 == 0
or $t4, $t2, $zero #c = a

slt sets the target to 1 if the value of source 1 is less than source 2 In the above example we needed to switch the values for the comparison statement. If we wanted to add an else statement we need an unconditional jump