I need help on this practice problem for ARM assembly Course, we haven't gone over much multi-function or local scope variables.

4.2.1 Part 1 Write an ARM assembly program to do the eqivalent of the following C code: Listing 4.1: Program to calculate checksum with a bug. /* This program uses global variables with static duration and global scope */ char buffer[4096]; int i-0; int sum=0; 8 int checksum (char buffer[]) for(i=0; buffer[i] != 0; sum += buffer[i++]); return sum; int main() printf ("Enter text (ctrl-D to end) : "); do buffer[i]=get char(); /* get char returns -1 on EOF */ while ( (buffer[i] != -1) && (++i