char *strcpy(char *dst, char *src) {
    char *dst_copy = dst;
    while (*src) {
        (*dst) = (*src)
        ++dst;
        ++src;
    }
    (*dst) = (*src) 
    return dst_copy;
}

Dos and Dont's

• DO follow ARM calling conventions
• DO NOT just compile the code with a C compiler and turn that in. That is cheating :(
• DO check your work. Download an ARM gcc/gas tool chain and make sure your code works.
• DO Turn in both an ARM 32bit and ARM 64bit version and make sure both follow the correct conventions.