335     pub frame: TrapFrame,   // 暂存的系统调用/中断返回时，原本要弹出的内核栈帧  field
359         frame: &TrapFrame,  in setup_sigcontext()
366         self.frame = *frame;  in setup_sigcontext()
385     pub fn restore_sigcontext(&mut self, frame: &mut TrapFrame) -> bool {  in restore_sigcontext()
388         (*frame) = self.frame;  in restore_sigcontext()
409 unsafe extern "C" fn do_signal(frame: &mut TrapFrame) {  in do_signal()
410     X86_64SignalArch::do_signal(frame);  in do_signal()
417     unsafe fn do_signal(frame: &mut TrapFrame) {  in do_signal()
429         if siginfo_read_guard.sig_pending().signal().bits() == 0 || !frame.is_from_user() {  in do_signal()
492             handle_signal(sig_number, &mut sigaction, &info.unwrap(), &oldset, frame);  in do_signal()
504         let frame = (trap_frame.rsp as usize - size_of::<u64>()) as *mut SigFrame;  in sys_rt_sigreturn()  localVariable
507         if UserBufferWriter::new(frame, size_of::<SigFrame>(), true).is_err() {  in sys_rt_sigreturn()
513         let mut sigmask: SigSet = unsafe { (*frame).context.oldmask };  in sys_rt_sigreturn()
516         if !unsafe { &mut (*frame).context }.restore_sigcontext(trap_frame) {  in sys_rt_sigreturn()
541     frame: &mut TrapFrame,  in handle_signal()
546     return setup_frame(sig, sigaction, info, oldset, frame);  in handle_signal()
621     let frame: *mut SigFrame = get_stack(trap_frame, size_of::<SigFrame>());  in setup_frame()  localVariable
625         UserBufferWriter::new(frame, size_of::<SigFrame>(), true);  in setup_frame()
638     info.copy_siginfo_to_user(unsafe { &mut ((*frame).info) as *mut SigInfo })  in setup_frame()
650         (*frame)  in setup_frame()
664         (*frame).ret_code_ptr = ret_code_ptr;  in setup_frame()
667     unsafe { (*frame).handler = temp_handler };  in setup_frame()
670     trap_frame.rsi = unsafe { &(*frame).info as *const SigInfo as u64 };  in setup_frame()
671     trap_frame.rsp = frame as u64;  in setup_frame()
672     trap_frame.rip = unsafe { (*frame).handler as u64 };  in setup_frame()
684 fn get_stack(frame: &TrapFrame, size: usize) -> *mut SigFrame {  in get_stack()
689     let mut rsp: usize = (frame.rsp as usize) - 128 - size;  in get_stack()