Q2: Write a MIPS code fragment that computes the equation $s0 = $s0*105 without the use of multiplication instructions with the minimum number of instructions?

HINT: use 105 = 15*7.

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Q3: Write a minimum sequence of MIPS basic instructions to implement the pseudo instruction?

andi $t0,$t0,0x12345678

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Q4: Compile the C-Language statement A[100] = A[0] * 2; into MIPS assembly code using the minimum number of instructions. Assume that register $s2 holds the base of A (an array of integers).

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Q5: Assuming A is an integer array with base in $s4 and that the compiler associates the integer variables g, i, and n with the registers $s1, $s2, and $s3, respectively. What is the compiled MIPS assembly code for the following C code segment?

for (i = 0; i < n; i++)

g = g + A[i];

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Q6: Assume that argument registers $a0 and $a1 initially contain positive integers a and b, respectively. Assume that $v0 is used for the result.

add $t0, $0, $0

loop beq $a1, $0, exit

add $t0, $t0, $a0

addi $a1, $a1, 1

j loop

exit add $v0, $t0, $0

jr $ra

a) Add comments to the above MIPS subroutine code?

b) What does this code compute?

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Q7: Write MIPS assembly instructions to

a) Set bits 3, 8, and 12 of $s0 to 0

b) Complement all bits of $s0

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Q8: Write MIPS assembly instructions to load one byte from memory address 1025 into register $s0. Do not use MIPS lb or lh instructions.

Assume that register $t1 has the value 1016 (base address).

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Q9: Assume that the compiler associates registers $s5 and $s6 with integer variables i and x for the following code:

slti $at, $s5, 5

beq $at, $zero, Else

add $s6, $s5, $zero

j Exit

Else: add $s6, $zero, $zero

Exit:

a) Decompile the above MIPS code segment to a C-language code segment?

b) Suggest the appropriate MIPS pseudo instruction equivalent to the above MIPS assembly code?

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Q10: a) Disassemble the following MIPS machine instruction?

00 00 00 00hex

b) Suggest an appropriate MIPS pseudo instruction equivalent to that MIPS assembly code?

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