142 static int restore_sigframe(struct pt_regs *regs, struct sigframe __user *sf)  in restore_sigframe()  argument
152 	__get_user_error(regs->ARM_r0, &sf->uc.uc_mcontext.arm_r0, err);  in restore_sigframe()
153 	__get_user_error(regs->ARM_r1, &sf->uc.uc_mcontext.arm_r1, err);  in restore_sigframe()
154 	__get_user_error(regs->ARM_r2, &sf->uc.uc_mcontext.arm_r2, err);  in restore_sigframe()
155 	__get_user_error(regs->ARM_r3, &sf->uc.uc_mcontext.arm_r3, err);  in restore_sigframe()
156 	__get_user_error(regs->ARM_r4, &sf->uc.uc_mcontext.arm_r4, err);  in restore_sigframe()
157 	__get_user_error(regs->ARM_r5, &sf->uc.uc_mcontext.arm_r5, err);  in restore_sigframe()
158 	__get_user_error(regs->ARM_r6, &sf->uc.uc_mcontext.arm_r6, err);  in restore_sigframe()
159 	__get_user_error(regs->ARM_r7, &sf->uc.uc_mcontext.arm_r7, err);  in restore_sigframe()
160 	__get_user_error(regs->ARM_r8, &sf->uc.uc_mcontext.arm_r8, err);  in restore_sigframe()
161 	__get_user_error(regs->ARM_r9, &sf->uc.uc_mcontext.arm_r9, err);  in restore_sigframe()
162 	__get_user_error(regs->ARM_r10, &sf->uc.uc_mcontext.arm_r10, err);  in restore_sigframe()
163 	__get_user_error(regs->ARM_fp, &sf->uc.uc_mcontext.arm_fp, err);  in restore_sigframe()
164 	__get_user_error(regs->ARM_ip, &sf->uc.uc_mcontext.arm_ip, err);  in restore_sigframe()
165 	__get_user_error(regs->ARM_sp, &sf->uc.uc_mcontext.arm_sp, err);  in restore_sigframe()
166 	__get_user_error(regs->ARM_lr, &sf->uc.uc_mcontext.arm_lr, err);  in restore_sigframe()
167 	__get_user_error(regs->ARM_pc, &sf->uc.uc_mcontext.arm_pc, err);  in restore_sigframe()
168 	__get_user_error(regs->ARM_cpsr, &sf->uc.uc_mcontext.arm_cpsr, err);  in restore_sigframe()
170 	err |= !valid_user_regs(regs);  in restore_sigframe()
189 asmlinkage int sys_sigreturn(struct pt_regs *regs)  in sys_sigreturn()  argument
201 	if (regs->ARM_sp & 7)  in sys_sigreturn()
204 	frame = (struct sigframe __user *)regs->ARM_sp;  in sys_sigreturn()
209 	if (restore_sigframe(regs, frame))  in sys_sigreturn()
212 	return regs->ARM_r0;  in sys_sigreturn()
219 asmlinkage int sys_rt_sigreturn(struct pt_regs *regs)  in sys_rt_sigreturn()  argument
231 	if (regs->ARM_sp & 7)  in sys_rt_sigreturn()
234 	frame = (struct rt_sigframe __user *)regs->ARM_sp;  in sys_rt_sigreturn()
239 	if (restore_sigframe(regs, &frame->sig))  in sys_rt_sigreturn()
245 	return regs->ARM_r0;  in sys_rt_sigreturn()
253 setup_sigframe(struct sigframe __user *sf, struct pt_regs *regs, sigset_t *set)  in setup_sigframe()  argument
258 	__put_user_error(regs->ARM_r0, &sf->uc.uc_mcontext.arm_r0, err);  in setup_sigframe()
259 	__put_user_error(regs->ARM_r1, &sf->uc.uc_mcontext.arm_r1, err);  in setup_sigframe()
260 	__put_user_error(regs->ARM_r2, &sf->uc.uc_mcontext.arm_r2, err);  in setup_sigframe()
261 	__put_user_error(regs->ARM_r3, &sf->uc.uc_mcontext.arm_r3, err);  in setup_sigframe()
262 	__put_user_error(regs->ARM_r4, &sf->uc.uc_mcontext.arm_r4, err);  in setup_sigframe()
263 	__put_user_error(regs->ARM_r5, &sf->uc.uc_mcontext.arm_r5, err);  in setup_sigframe()
264 	__put_user_error(regs->ARM_r6, &sf->uc.uc_mcontext.arm_r6, err);  in setup_sigframe()
265 	__put_user_error(regs->ARM_r7, &sf->uc.uc_mcontext.arm_r7, err);  in setup_sigframe()
266 	__put_user_error(regs->ARM_r8, &sf->uc.uc_mcontext.arm_r8, err);  in setup_sigframe()
267 	__put_user_error(regs->ARM_r9, &sf->uc.uc_mcontext.arm_r9, err);  in setup_sigframe()
268 	__put_user_error(regs->ARM_r10, &sf->uc.uc_mcontext.arm_r10, err);  in setup_sigframe()
269 	__put_user_error(regs->ARM_fp, &sf->uc.uc_mcontext.arm_fp, err);  in setup_sigframe()
270 	__put_user_error(regs->ARM_ip, &sf->uc.uc_mcontext.arm_ip, err);  in setup_sigframe()
271 	__put_user_error(regs->ARM_sp, &sf->uc.uc_mcontext.arm_sp, err);  in setup_sigframe()
272 	__put_user_error(regs->ARM_lr, &sf->uc.uc_mcontext.arm_lr, err);  in setup_sigframe()
273 	__put_user_error(regs->ARM_pc, &sf->uc.uc_mcontext.arm_pc, err);  in setup_sigframe()
274 	__put_user_error(regs->ARM_cpsr, &sf->uc.uc_mcontext.arm_cpsr, err);  in setup_sigframe()
302 get_sigframe(struct ksignal *ksig, struct pt_regs *regs, int framesize)  in get_sigframe()  argument
304 	unsigned long sp = sigsp(regs->ARM_sp, ksig);  in get_sigframe()
322 setup_return(struct pt_regs *regs, struct ksignal *ksig,  in setup_return()  argument
328 	unsigned long cpsr = regs->ARM_cpsr & ~(PSR_f | PSR_E_BIT);  in setup_return()
409 	regs->ARM_r0 = ksig->sig;  in setup_return()
410 	regs->ARM_sp = (unsigned long)frame;  in setup_return()
411 	regs->ARM_lr = retcode;  in setup_return()
412 	regs->ARM_pc = handler;  in setup_return()
413 	regs->ARM_cpsr = cpsr;  in setup_return()
419 setup_frame(struct ksignal *ksig, sigset_t *set, struct pt_regs *regs)  in setup_frame()  argument
421 	struct sigframe __user *frame = get_sigframe(ksig, regs, sizeof(*frame));  in setup_frame()
432 	err |= setup_sigframe(frame, regs, set);  in setup_frame()
434 		err = setup_return(regs, ksig, frame->retcode, frame);  in setup_frame()
440 setup_rt_frame(struct ksignal *ksig, sigset_t *set, struct pt_regs *regs)  in setup_rt_frame()  argument
442 	struct rt_sigframe __user *frame = get_sigframe(ksig, regs, sizeof(*frame));  in setup_rt_frame()
453 	err |= __save_altstack(&frame->sig.uc.uc_stack, regs->ARM_sp);  in setup_rt_frame()
454 	err |= setup_sigframe(&frame->sig, regs, set);  in setup_rt_frame()
456 		err = setup_return(regs, ksig, frame->sig.retcode, frame);  in setup_rt_frame()
464 		regs->ARM_r1 = (unsigned long)&frame->info;  in setup_rt_frame()
465 		regs->ARM_r2 = (unsigned long)&frame->sig.uc;  in setup_rt_frame()
474 static void handle_signal(struct ksignal *ksig, struct pt_regs *regs)  in handle_signal()  argument
483 		ret = setup_rt_frame(ksig, oldset, regs);  in handle_signal()
485 		ret = setup_frame(ksig, oldset, regs);  in handle_signal()
490 	ret |= !valid_user_regs(regs);  in handle_signal()
504 static int do_signal(struct pt_regs *regs, int syscall)  in do_signal()  argument
514 		continue_addr = regs->ARM_pc;  in do_signal()
515 		restart_addr = continue_addr - (thumb_mode(regs) ? 2 : 4);  in do_signal()
516 		retval = regs->ARM_r0;  in do_signal()
529 			regs->ARM_r0 = regs->ARM_ORIG_r0;  in do_signal()
530 			regs->ARM_pc = restart_addr;  in do_signal()
546 		if (unlikely(restart) && regs->ARM_pc == restart_addr) {  in do_signal()
551 				regs->ARM_r0 = -EINTR;  in do_signal()
552 				regs->ARM_pc = continue_addr;  in do_signal()
555 		handle_signal(&ksig, regs);  in do_signal()
559 		if (unlikely(restart) && regs->ARM_pc == restart_addr) {  in do_signal()
560 			regs->ARM_pc = continue_addr;  in do_signal()
568 do_work_pending(struct pt_regs *regs, unsigned int thread_flags, int syscall)  in do_work_pending()  argument
574 			if (unlikely(!user_mode(regs)))  in do_work_pending()
578 				int restart = do_signal(regs, syscall);  in do_work_pending()
589 				uprobe_notify_resume(regs);  in do_work_pending()
592 				tracehook_notify_resume(regs);  in do_work_pending()