95 static int restore_sigframe(struct pt_regs *regs,  in restore_sigframe()  argument
107 		__get_user_error(regs->regs[i], &sf->uc.uc_mcontext.regs[i],  in restore_sigframe()
109 	__get_user_error(regs->sp, &sf->uc.uc_mcontext.sp, err);  in restore_sigframe()
110 	__get_user_error(regs->pc, &sf->uc.uc_mcontext.pc, err);  in restore_sigframe()
111 	__get_user_error(regs->pstate, &sf->uc.uc_mcontext.pstate, err);  in restore_sigframe()
116 	regs->syscallno = ~0UL;  in restore_sigframe()
118 	err |= !valid_user_regs(&regs->user_regs);  in restore_sigframe()
129 asmlinkage long sys_rt_sigreturn(struct pt_regs *regs)  in sys_rt_sigreturn()  argument
140 	if (regs->sp & 15)  in sys_rt_sigreturn()
143 	frame = (struct rt_sigframe __user *)regs->sp;  in sys_rt_sigreturn()
148 	if (restore_sigframe(regs, frame))  in sys_rt_sigreturn()
154 	return regs->regs[0];  in sys_rt_sigreturn()
160 				    regs->pc, regs->sp);  in sys_rt_sigreturn()
166 			  struct pt_regs *regs, sigset_t *set)  in setup_sigframe()  argument
173 	__put_user_error(regs->regs[29], &sf->fp, err);  in setup_sigframe()
174 	__put_user_error(regs->regs[30], &sf->lr, err);  in setup_sigframe()
177 		__put_user_error(regs->regs[i], &sf->uc.uc_mcontext.regs[i],  in setup_sigframe()
179 	__put_user_error(regs->sp, &sf->uc.uc_mcontext.sp, err);  in setup_sigframe()
180 	__put_user_error(regs->pc, &sf->uc.uc_mcontext.pc, err);  in setup_sigframe()
181 	__put_user_error(regs->pstate, &sf->uc.uc_mcontext.pstate, err);  in setup_sigframe()
213 					       struct pt_regs *regs)  in get_sigframe()  argument
218 	sp = sp_top = sigsp(regs->sp, ksig);  in get_sigframe()
232 static void setup_return(struct pt_regs *regs, struct k_sigaction *ka,  in setup_return()  argument
237 	regs->regs[0] = usig;  in setup_return()
238 	regs->sp = (unsigned long)frame;  in setup_return()
239 	regs->regs[29] = regs->sp + offsetof(struct rt_sigframe, fp);  in setup_return()
240 	regs->pc = (unsigned long)ka->sa.sa_handler;  in setup_return()
247 	regs->regs[30] = (unsigned long)sigtramp;  in setup_return()
251 			  struct pt_regs *regs)  in setup_rt_frame()  argument
256 	frame = get_sigframe(ksig, regs);  in setup_rt_frame()
263 	err |= __save_altstack(&frame->uc.uc_stack, regs->sp);  in setup_rt_frame()
264 	err |= setup_sigframe(frame, regs, set);  in setup_rt_frame()
266 		setup_return(regs, &ksig->ka, frame, usig);  in setup_rt_frame()
269 			regs->regs[1] = (unsigned long)&frame->info;  in setup_rt_frame()
270 			regs->regs[2] = (unsigned long)&frame->uc;  in setup_rt_frame()
277 static void setup_restart_syscall(struct pt_regs *regs)  in setup_restart_syscall()  argument
280 		compat_setup_restart_syscall(regs);  in setup_restart_syscall()
282 		regs->regs[8] = __NR_restart_syscall;  in setup_restart_syscall()
288 static void handle_signal(struct ksignal *ksig, struct pt_regs *regs)  in handle_signal()  argument
300 			ret = compat_setup_rt_frame(usig, ksig, oldset, regs);  in handle_signal()
302 			ret = compat_setup_frame(usig, ksig, oldset, regs);  in handle_signal()
304 		ret = setup_rt_frame(usig, ksig, oldset, regs);  in handle_signal()
310 	ret |= !valid_user_regs(&regs->user_regs);  in handle_signal()
331 static void do_signal(struct pt_regs *regs)  in do_signal()  argument
335 	int syscall = (int)regs->syscallno;  in do_signal()
342 		continue_addr = regs->pc;  in do_signal()
343 		restart_addr = continue_addr - (compat_thumb_mode(regs) ? 2 : 4);  in do_signal()
344 		retval = regs->regs[0];  in do_signal()
349 		regs->syscallno = ~0UL;  in do_signal()
360 			regs->regs[0] = regs->orig_x0;  in do_signal()
361 			regs->pc = restart_addr;  in do_signal()
376 		if (regs->pc == restart_addr &&  in do_signal()
381 			regs->regs[0] = -EINTR;  in do_signal()
382 			regs->pc = continue_addr;  in do_signal()
385 		handle_signal(&ksig, regs);  in do_signal()
393 	if (syscall >= 0 && regs->pc == restart_addr) {  in do_signal()
395 			setup_restart_syscall(regs);  in do_signal()
402 asmlinkage void do_notify_resume(struct pt_regs *regs,  in do_notify_resume()  argument
406 		do_signal(regs);  in do_notify_resume()
410 		tracehook_notify_resume(regs);  in do_notify_resume()