44 static int setup_sigcontext(struct pt_regs *regs, struct sigcontext __user *sc)  in setup_sigcontext()  argument
49 	reg = regs->cp0_epc; err |= __put_user(reg, &sc->sc_pc);  in setup_sigcontext()
50 	err |= __put_user(regs->cp0_psr, &sc->sc_psr);  in setup_sigcontext()
51 	err |= __put_user(regs->cp0_condition, &sc->sc_condition);  in setup_sigcontext()
55 	reg = regs->regs[i];				\  in setup_sigcontext()
70 	reg = regs->ceh; err |= __put_user(reg, &sc->sc_mdceh);  in setup_sigcontext()
71 	reg = regs->cel; err |= __put_user(reg, &sc->sc_mdcel);  in setup_sigcontext()
72 	err |= __put_user(regs->cp0_ecr, &sc->sc_ecr);  in setup_sigcontext()
73 	err |= __put_user(regs->cp0_ema, &sc->sc_ema);  in setup_sigcontext()
78 static int restore_sigcontext(struct pt_regs *regs, struct sigcontext __user *sc)  in restore_sigcontext()  argument
83 	err |= __get_user(regs->cp0_epc, &sc->sc_pc);  in restore_sigcontext()
84 	err |= __get_user(regs->cp0_condition, &sc->sc_condition);  in restore_sigcontext()
87 	regs->ceh = (int) reg;  in restore_sigcontext()
89 	regs->cel = (int) reg;  in restore_sigcontext()
92 	regs->cp0_psr = (int) reg;  in restore_sigcontext()
94 	regs->cp0_ecr = (int) reg;  in restore_sigcontext()
96 	regs->cp0_ema = (int) reg;  in restore_sigcontext()
100 	regs->regs[i] = reg;				\  in restore_sigcontext()
121 			struct pt_regs *regs, size_t frame_size)  in get_sigframe()  argument
126 	sp = regs->regs[0];  in get_sigframe()
137 score_rt_sigreturn(struct pt_regs *regs)  in score_rt_sigreturn()  argument
146 	frame = (struct rt_sigframe __user *) regs->regs[0];  in score_rt_sigreturn()
154 	sig = restore_sigcontext(regs, &frame->rs_uc.uc_mcontext);  in score_rt_sigreturn()
162 	regs->is_syscall = 0;  in score_rt_sigreturn()
168 		: : "r" (regs) : "r8");  in score_rt_sigreturn()
176 static int setup_rt_frame(struct ksignal *ksig, struct pt_regs *regs,  in setup_rt_frame()  argument
182 	frame = get_sigframe(&ksig->ka, regs, sizeof(*frame));  in setup_rt_frame()
200 	err |= __save_altstack(&frame->rs_uc.uc_stack, regs->regs[0]);  in setup_rt_frame()
201 	err |= setup_sigcontext(regs, &frame->rs_uc.uc_mcontext);  in setup_rt_frame()
207 	regs->regs[0] = (unsigned long) frame;  in setup_rt_frame()
208 	regs->regs[3] = (unsigned long) frame->rs_code;  in setup_rt_frame()
209 	regs->regs[4] = ksig->sig;  in setup_rt_frame()
210 	regs->regs[5] = (unsigned long) &frame->rs_info;  in setup_rt_frame()
211 	regs->regs[6] = (unsigned long) &frame->rs_uc;  in setup_rt_frame()
212 	regs->regs[29] = (unsigned long) ksig->ka.sa.sa_handler;  in setup_rt_frame()
213 	regs->cp0_epc = (unsigned long) ksig->ka.sa.sa_handler;  in setup_rt_frame()
218 static void handle_signal(struct ksignal *ksig, struct pt_regs *regs)  in handle_signal()  argument
222 	if (regs->is_syscall) {  in handle_signal()
223 		switch (regs->regs[4]) {  in handle_signal()
226 			regs->regs[4] = EINTR;  in handle_signal()
230 				regs->regs[4] = EINTR;  in handle_signal()
234 			regs->regs[4] = regs->orig_r4;  in handle_signal()
235 			regs->regs[7] = regs->orig_r7;  in handle_signal()
236 			regs->cp0_epc -= 8;  in handle_signal()
239 		regs->is_syscall = 0;  in handle_signal()
245 	ret = setup_rt_frame(ksig, regs, sigmask_to_save());  in handle_signal()
250 static void do_signal(struct pt_regs *regs)  in do_signal()  argument
259 	if (!user_mode(regs))  in do_signal()
264 		handle_signal(&ksig, regs);  in do_signal()
268 	if (regs->is_syscall) {  in do_signal()
269 		if (regs->regs[4] == ERESTARTNOHAND ||  in do_signal()
270 		    regs->regs[4] == ERESTARTSYS ||  in do_signal()
271 		    regs->regs[4] == ERESTARTNOINTR) {  in do_signal()
272 			regs->regs[4] = regs->orig_r4;  in do_signal()
273 			regs->regs[7] = regs->orig_r7;  in do_signal()
274 			regs->cp0_epc -= 8;  in do_signal()
277 		if (regs->regs[4] == ERESTART_RESTARTBLOCK) {  in do_signal()
278 			regs->regs[27] = __NR_restart_syscall;  in do_signal()
279 			regs->regs[4] = regs->orig_r4;  in do_signal()
280 			regs->regs[7] = regs->orig_r7;  in do_signal()
281 			regs->cp0_epc -= 8;  in do_signal()
284 		regs->is_syscall = 0;	/* Don't deal with this again.  */  in do_signal()
298 asmlinkage void do_notify_resume(struct pt_regs *regs, void *unused,  in do_notify_resume()  argument
303 		do_signal(regs);  in do_notify_resume()
306 		tracehook_notify_resume(regs);  in do_notify_resume()