+ if (vstack_ax(stack)->type == REG_S64)
+ *(filter_opcode_t *) pc = FILTER_OP_RETURN_S64;
+ ret = 0;
+ goto end;
+
+ case FILTER_OP_RETURN_S64:
+ if (vstack_ax(stack)->type != REG_S64) {
+ ERR("Unexpected register type\n");
+ ret = -EINVAL;
+ goto end;
+ }