ASSEMBLY FOR X86 PROCESSORS

In the following program, what are the outputs for the 4 debugging statements when the FPU stack is examined in steps a, b, c and d if the radius is 10?

INCLUDE Irvine32.inc

.data

radius REAL8 ?

str1 BYTE "Please enter the circle's radius: " , 0

str2 BYTE "The area under the circle is: " , 0

area REAL8 ?

.code

main PROC

call Clrscr

finit

mov edx, OFFSET str1

call WriteString

call ReadFloat; ST(0) = radius

; Exponentiation has the highest precedence in this expression

fmul ST (0), ST(0)

call showFPUStack; step a

fldpi

call showFPUStack; step b

fmul

call showFPUStack; step c

mov edx, OFFSET str2

call WriteString

call WriteFloat

call Crlf

fstp area

call showFPUStack; step d

exit

main ENDP

END main