ARC Assembler & Interpreter

! ------------------------------------------------------- ! ! This program sums the elements from array that is ! ! located starting with 3000. ! ! ------------------------------------------------------- ! ! Used registers ! ! ============== ! ! r1: length ! ! r2: start (3000) ! ! r3: sum of the elements (is initialized with zero) ! ! r4: the current element ! ! ============== ! ! r1, r2 and r4 are set back to 0 after the loop is done ! ! ------------------------------------------------------- ! .begin .org 2048 call init_r call loop init_r: ld [length], %r1 ld [start], %r2 ld [zero], %r3 jmpl %r15+4, %r0 loop: ld %r2, %r4 addcc %r2, 4, %r2 addcc %r3, %r4, %r3 addcc %r1, -1, %r1 be done ba loop done: ld [zero], %r1 ld [zero], %r2 ld [zero], %r4 jmpl %r15+4, %r0 start: 3000 length: 4 zero: 0 .org 3000 10 20 -0xa aH .end