;
;	CPE 221 Assembly Example
;	
;	This program adds a scalar value to all the elements in one
;      array and stores that in another array.
;
;int main()
;{
;  const int size = 10;
;  int x[size] = {13000, 298, -4729, 698, -2700, 5267, -1, 32641};
;  int y[size];
;  int a = 157;
;  int i;
;  for (i = 0; i < size; i++)
;    y[i] = x[i] + a;
;}
;
        AREA ARRAY_PLUS_SCALAR, CODE, READWRITE
        ENTRY
        ADR   r0, x       ; pointer to first element of x
        ADR   r1, y       ; pointer to first element of y
        LDR   r2, size    ; holds size of arrays
        LDR   r3, i       ; holds loop counter
        LDR   r5, a       ; holds a
loop    SUBS  r4, r3, r2  ; compute i - size
        BPL   done        ; if i - size >= 0, done
        LDR   r4, [r0]    ; r4 = array0[i]
        ADD   r4, r4, r5  ; r4 = array0[i] + a
        STR   r4, [r1]    ; array1[i] = array0[i] + a
        ADD   r0, r0, #4   ; update r0 to point to next element of array0
        ADD   r1, r1, #4   ; update r1 to point to next element of array1
        ADD   r3, r3, #1   ; i++
        B     loop
done    B     done
size    DCD   8
a       DCD   157
x       DCD   13000, 298, -4729, 698, -2700, 5267, -1, 32641 
y       SPACE 32
i       DCD   0
	END