45 restore_sigcontext(struct pt_regs *regs, struct sigcontext __user *sc,  in restore_sigcontext()  argument
53 #define COPY(x)		err |= __get_user(regs->x, &sc->sc_##x)  in restore_sigcontext()
82 	regs->syscall_nr = -1;	/* disable syscall checks */  in restore_sigcontext()
91 		 unsigned long r5, unsigned long r6, struct pt_regs *regs)  in sys_rt_sigreturn()  argument
93 	struct rt_sigframe __user *frame = (struct rt_sigframe __user *)regs->spu;  in sys_rt_sigreturn()
104 	if (restore_sigcontext(regs, &frame->uc.uc_mcontext, &result))  in sys_rt_sigreturn()
122 setup_sigcontext(struct sigcontext __user *sc, struct pt_regs *regs,  in setup_sigcontext()  argument
127 #define COPY(x)	err |= __put_user(regs->x, &sc->sc_##x)  in setup_sigcontext()
171 			  struct pt_regs *regs)  in setup_rt_frame()  argument
177 	frame = get_sigframe(ksig, regs->spu, sizeof(*frame));  in setup_rt_frame()
195 	err |= __save_altstack(&frame->uc.uc_stack, regs->spu);  in setup_rt_frame()
196 	err |= setup_sigcontext(&frame->uc.uc_mcontext, regs, set->sig[0]);  in setup_rt_frame()
202 	regs->lr = (unsigned long)ksig->ka.sa.sa_restorer;  in setup_rt_frame()
205 	regs->spu = (unsigned long)frame;  in setup_rt_frame()
206 	regs->r0 = sig;	/* Arg for signal handler */  in setup_rt_frame()
207 	regs->r1 = (unsigned long)&frame->info;  in setup_rt_frame()
208 	regs->r2 = (unsigned long)&frame->uc;  in setup_rt_frame()
209 	regs->bpc = (unsigned long)ksig->ka.sa.sa_handler;  in setup_rt_frame()
213 		current->comm, current->pid, frame, regs->pc);  in setup_rt_frame()
219 static int prev_insn(struct pt_regs *regs)  in prev_insn()  argument
222 	if (get_user(inst, (u16 __user *)(regs->bpc - 2)))  in prev_insn()
225 		regs->bpc -= 2;  in prev_insn()
227 		regs->bpc -= 4;  in prev_insn()
228 	regs->syscall_nr = -1;  in prev_insn()
237 handle_signal(struct ksignal *ksig, struct pt_regs *regs)  in handle_signal()  argument
242 	if (regs->syscall_nr >= 0) {  in handle_signal()
244 		switch (regs->r0) {  in handle_signal()
247 				regs->r0 = -EINTR;  in handle_signal()
252 					regs->r0 = -EINTR;  in handle_signal()
257 				regs->r0 = regs->orig_r0;  in handle_signal()
258 				if (prev_insn(regs) < 0)  in handle_signal()
264 	ret = setup_rt_frame(ksig, sigmask_to_save(), regs);  in handle_signal()
274 static void do_signal(struct pt_regs *regs)  in do_signal()  argument
284 	if (!user_mode(regs))  in do_signal()
295 		handle_signal(&ksig, regs);  in do_signal()
301 	if (regs->syscall_nr >= 0) {  in do_signal()
303 		if (regs->r0 == -ERESTARTNOHAND ||  in do_signal()
304 		    regs->r0 == -ERESTARTSYS ||  in do_signal()
305 		    regs->r0 == -ERESTARTNOINTR) {  in do_signal()
306 			regs->r0 = regs->orig_r0;  in do_signal()
307 			prev_insn(regs);  in do_signal()
308 		} else if (regs->r0 == -ERESTART_RESTARTBLOCK){  in do_signal()
309 			regs->r0 = regs->orig_r0;  in do_signal()
310 			regs->r7 = __NR_restart_syscall;  in do_signal()
311 			prev_insn(regs);  in do_signal()
321 void do_notify_resume(struct pt_regs *regs, __u32 thread_info_flags)  in do_notify_resume()  argument
329 		do_signal(regs);  in do_notify_resume()
333 		tracehook_notify_resume(regs);  in do_notify_resume()