390 pub extern "C" fn do_signal(regs: &mut pt_regs) {  in do_signal()
392     if current_pcb().sig_pending.signal == 0 || (!user_mode(regs)) {  in do_signal()
403         let (sig_number, info, ka) = get_signal_to_deliver(regs.clone());  in do_signal()
413         let res = handle_signal(sig_number, ka.unwrap(), &info.unwrap(), &oldset, regs);  in do_signal()
583     regs: &mut pt_regs,  in handle_signal()
586     let retval = setup_frame(sig, ka, info, oldset, regs);  in handle_signal()
601     regs: &mut pt_regs,  in setup_frame()
604     let frame: *mut sigframe = get_stack(ka, &regs, size_of::<sigframe>());  in setup_frame()
638     err |= setup_sigcontext(unsafe { &mut (*frame).context }, oldset, &regs).unwrap_or(1);  in setup_frame()
661     regs.rdi = sig as u64;  in setup_frame()
662     regs.rsi = unsafe { &(*frame).info as *const siginfo as u64 };  in setup_frame()
663     regs.rsp = frame as u64;  in setup_frame()
664     regs.rip = unsafe { ka._u._sa_handler };  in setup_frame()
669     if regs.rip >= USER_MAX_LINEAR_ADDR {  in setup_frame()
676         regs.rip = 0;  in setup_frame()
680     regs.cs = (USER_CS | 0x3) as u64;  in setup_frame()
681     regs.ds = (USER_DS | 0x3) as u64;  in setup_frame()
691 fn get_stack(_ka: &sigaction, regs: &pt_regs, size: usize) -> *mut sigframe {  in get_stack()
693     let mut rsp: usize = (regs.rsp as usize) - 128 - size;  in get_stack()
727     regs: &pt_regs,  in setup_sigcontext()
732     context.regs = regs.clone();  in setup_sigcontext()
746 fn restore_sigcontext(context: *const sigcontext, regs: &mut pt_regs) -> bool {  in restore_sigcontext()
749         *regs = (*context).regs;  in restore_sigcontext()
870 pub fn sys_rt_sigreturn(regs: &mut pt_regs) -> u64 {  in sys_rt_sigreturn()
871     let frame = regs.rsp as usize as *mut sigframe;  in sys_rt_sigreturn()
886     if restore_sigcontext(unsafe { &mut (*frame).context }, regs) == false {  in sys_rt_sigreturn()
895     return regs.rax;  in sys_rt_sigreturn()