; Variadic function that sums all arguments
MAKE_FUNCTION (x ...rest) .sum_body
PUSH 5
PUSH 10
PUSH 15
PUSH 20
PUSH 4
PUSH 0
CALL
HALT

.sum_body:
LOAD x
STORE sum
PUSH 0
STORE i

.loop_start:
  LOAD i
  LOAD rest
  ARRAY_LEN
  LT
  JUMP_IF_FALSE .loop_end

  LOAD sum
  LOAD rest
  LOAD i
  ARRAY_GET
  ADD
  STORE sum
  LOAD i
  PUSH 1
  ADD
  STORE i
  JUMP .loop_start

.loop_end:
  LOAD sum
  RETURN