6.100%. TI PS/SP 5/S ogram includes a subroutine called myadd that performs x-(y

Question

6.100%. TI PS/SP 5/S ogram includes a subroutine called myadd that performs x-(y+z);. In the space below, replace - the myadd subroutine with one named isodd that will make x have the value 1 if y has an odd value and 0 if it is even. You should test your routine using SPIM before you submit it, which will require merging it with a test framework like the one used in this MIPS/SPIM program -- but only submit the myand routine here. Remember that you can and should comment vour code, especially if there are any known bugs. Half off for documented bugs. :-) # Addition routine: #x=y+z .text globl myadd myadd: la $te, y $t1, z $t1, «($t1) #t1 = z la $t0, $t2, X SW 0($t0) jr Sra # return

Explanation / Answer

Please find the MIPS code below with detailed comments:

.text

.globl isodd

isodd:

la $t0,y

lw $t0, 0($t0) t0 = y

and $t1, $t0, $1 # t2 will have logical AND of $t0 & 1

beq $t1,$1,$L1 # Branch to L1 if t2 = 1 ie y is odd

la $t2,x # y is even, so store x=0

sw $0, 0($t2)

j $L2

L1:  

la $t2,x # y is odd, so store x=1

sw $1, 0($t2)

L2:   

jr $ra #return

  

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