MIPS32 Assembly Language Let $t0 = 0xFEDC_4321, $t1 = 0x9876_ABCD, and $t2 = AAA

Question

MIPS32 Assembly Language

Let $t0 = 0xFEDC_4321, $t1 = 0x9876_ABCD, and $t2 = AAAA_AAAA. Suppose the following sequence of in-
structions (on the next page) is performed exactly four times, i.e., we execute instructions 1-4, we repeat executing
instructions 1-4, we repeat executing instructions 1-4, we repeat executing instructions 1-4, and then we stop. Show
the contents of $t0, $t1, $t2, and $t3, after we stop. Write your answers in hex.

[01] sll $t0, $t0, 1
[02] srl $t1, $t1, 1
[03] xor $t3, $t0, $t1
[04] nor $t3, $t2, $t3
[05] go back to line 1

Explanation / Answer

After executing the above 4 instructions for 4 times as in a loop,the contents in registers are as follows

t0 = 0xEDC4_3210

t1 = 0x0987_6ABC

t2 = 0xAAAA_AAAA

t3 = 0x1114_0551

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