Question

(MIPS Assembly Language): Write the following sequence of code using *native* MIPS instructions: x = x...

(MIPS Assembly Language):

Write the following sequence of code using *native* MIPS instructions: x = x - y[0] + y[1];

In memory x, y are stored beginning at 0x010000cc. Use registers $s1 for x,  and $s2 for the base address of y.

Make sure your code includes all necessary declarations such that it could run in SPIM.

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Answer #1

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# x is in s1
# base address of y is in s2
lw $t0,0($s1)#load y[0]
lw $t1,4($s1)#load y[1]
sub $t2,$s1,$t0 #get x-y[0]
add $s1,$t2,$t1 #get x-y[0]+y[1]

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