Write an ARM Assembly program called BMICalculator that will calculate the body

Question

Write an ARM Assembly program called BMICalculator that will calculate the body mass index (BMI) using weight in pounds and height in inches by evaluating the following expression, placing the result in register r0.

BMI = (weightInPounds * conversionFactor) / (heightInInches * heightInInches)

BMI = (150 * 703)/(64*64)

Your program should use the following data definitions:
weightInPounds DCD 150
heightInInches DCD 64

The EQU directive gives a symbolic name to a numeric constant. Use EQU directive to give a conversionFactor name to 703.

Syntax: name EQU expr{, type}
Example: temperature EQU 20 ; assigns the value 20 to the symbol temperature.

Use LDR instruction to load weightInPounds, heightInInches, and conversionFactor into registers r1, r2, and r3 respectively. To load heightInInches to a register using LDR is optional. There is not a divide instruction, but you can use the LSR (logical shift right) to simulate division by powers of two. Use hexadecimal calculator to verify your result.

Explanation / Answer

COde:

   pushq   %rbp
  
   movq   %rsp, %rbp

   subq   $32, %rsp
   movq   %fs:40, %rax
   movq   %rax, -8(%rbp)
   xorl   %eax, %eax
   movl   $703, -16(%rbp)
   leaq   -20(%rbp), %rdx
   leaq   -24(%rbp), %rax
   movq   %rax, %rsi
   movl   $.LC0, %edi
   movl   $0, %eax
  
   movl   -24(%rbp), %eax
   imull   -16(%rbp), %eax
   movl   -20(%rbp), %ecx
   movl   -20(%rbp), %edx
   movl   %edx, %esi
   imull   %ecx, %esi
  
   idivl   %esi
   movl   %eax, -12(%rbp)
   movl   -12(%rbp), %eax
   movl   %eax, %esi
   movl   $.LC1, %edi
   movl   $0, %eax
   call   printf
   movl   $0, %eax
   movq   -8(%rbp), %rcx
   xorq   %fs:40, %rcx
  

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