Question

Arm Assembly Programming :

Total of 3 assembly files using VisUAL arm emulator ( save as .S file)

1. Write a program to solve the below expression:

     Z= (a << 2) | (c & 15)

2. Write a program that adds the 32-bit two’s complement representations of −149 and 5 . Place the result in register r7. Submit your code with the resulting value in register r7 commented.

3. Write a program to mask first 9 bits of a 32 bit binary number.

Answer 1

#include <stdio.h>

int main()
{
int a,c,Z,mask=1,num;
register ans;
Z= (a << 2) | (c & 15);
ans = -149 + 5;
for(int offset=0;offset<9;offset++)
{
num=mask*num;
mask = mask*2;
}
  
  
return 0;
}