Assume that the variables w, x, y, and z are stored in memory locations 16, 32,...

Assume that the variables w, x, y, and z are stored in memory locations 16, 32, 48, and 128 respectively. Translate the following algorithmic operations into MIPS language equivalents:

[Assume $s1 is the base register, and $s1 contains the address of memory location 0]

if ((x – y) ³ w) then

set x to y

else:

set x to z

endif

Solutions

Expert Solution

C code
if ((x – y)³ < w) then
set x to y
else:
set x to z
endif

MIPS Code

   lw $t1, 16($s1)       //$t1 = w
   lw $t2, 32($s1)       //$t2 = x
   lw $t3, 48($s1)       //$t3 = y

   sub $t2, $t2, $t3   //$t2 = (x-y)
   mult $t2, $t2
   mfhi $t4       //$t4 = (x-y)^2
   mult $t4, $t2
   mfhi $t4       //$t4 = (x-y)^3

   slt $t2, $t4, $t1   //if((x-y)^3 < w) $t2 = 1
   beq $t2, $zero, Else   //if($t2 = 0) Branch to Else
   sw $t3, 32($s1)       // x = y

Else:
lw $t3, 128($s1) //$t3 = z
sw $t3, 32($s1) // x = z

venereology answered 7 months ago

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