Question

Write an equivalent MIPS code for the following C code. Assume that the base address of an array A is stored in register 450. Variables x, i, j and h are stored in registers $t0,$t1, $t2 and $t3 respectively. do{ x = x + A[i]; i = i + j; } (while i != h); Make sure your MIPS code has sufficient comments.

Answer 1

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Loop;

beq $t₁ , $t₃ , exit

addi $t₄, $t₀ , 0

addi $t₅, $t₁, 0

SLL $t₅, $t₅, 2

add $t₅ , $t₄, $t₅

LW $t₅ , 0($t₅)

add $t_0, $t₀, $t₅

add $t₁ , $t₁, $t₂

_{j Loop}

_exit: