STACK_ADDR_FROM_TOP  413 vm_insnhelper.c     MEMCPY(argv, STACK_ADDR_FROM_TOP(num + 1), VALUE, num + 1);
STACK_ADDR_FROM_TOP  890 vm_insnhelper.c 	VALUE val = vm_yield_with_cfunc(th, block, block->self, argc, STACK_ADDR_FROM_TOP(argc), 0);