PUSH
if (!stack_op(PUSH, fname, stack, stkptr)) {
case PUSH:
%token JUMPTRUE JUMPFALSE PUSH GETREC
if (mode == PUSH)
def(ap, c, PUSH);
PUSH(wio->_mb[--wio->_size]);
PUSH(mb[i]);
PUSH(ch);
PUSH(ch);
PUSH(msg);