Question

8, 100% This MIPS/S am includes a subroutine called myadd that performs x=(y+2): . In the space below. replace the myadd subroutine with one named mymin that will make x-min(y,z). Your code may take advantage of the fact that x, y, and z are consecutive words in memory. 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 mymin routine here # Addition routine: #x=y+z text .globl myadd myadd: $t0, y $t1, $t1, $t2, #t1 = z z e(St1) $t0, $t1 addu # t2 = y + z SW $t2, e(Ste) jr Sra # return

Answer 1

.text
.globl mymin

mymin:
        la $t0, y            # t0 = y
        lw $t0, 0($t0)
        la $t1, z            # t1 = z
        lw $t1, 0($t1) 
        slt $t2, $t0, $t1    # t2 = 1 if t0 < t1 otherwise t2 = 0
        beqz $t2, else       # if t2 = 0 then jump label else 
        la $t2,  x           # x = t1
        sw $t1, 0($t2)
        b end                # jump to the end of function (skip else part)
else:
        la $t2,  x           # x = t0
        sw $t0, 0($t2)
end:
        jr $ra               # return

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