Answer has to be written in MIPS Assemble Code
Problem 1: Write a function add64 that adds two input unsigned64 bit integers x and y and returns the unsigned 64 bit integer sumz, i.e. z = x + y. In your main function, you should assume that x,y, and z will be stored in the following 6 registers asfollows:
x: upper 32 bits in $t1 lower 32 bits in $t0
y: upper 32 bits in $t3 lower 32 bits in $t2
z: upper 32 bits in $t5 lower 32 bits in $t4
Your main function call should read the values of x and y intothe
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