45 int restore_sigcontext(struct pt_regs *regs,  in restore_sigcontext()  argument
59 	err = __copy_from_user(regs, sc, sizeof(*regs));  in restore_sigcontext()
62 	regs->ex1 = PL_ICS_EX1(USER_PL, EX1_ICS(regs->ex1));  in restore_sigcontext()
64 	regs->faultnum = INT_SWINT_1_SIGRETURN;  in restore_sigcontext()
69 void signal_fault(const char *type, struct pt_regs *regs,  in signal_fault()  argument
72 	trace_unhandled_signal(type, regs, (unsigned long)frame, SIGSEGV);  in signal_fault()
79 	struct pt_regs *regs = current_pt_regs();  in SYSCALL_DEFINE0()  local
81 		(struct rt_sigframe __user *)(regs->sp);  in SYSCALL_DEFINE0()
91 	if (restore_sigcontext(regs, &frame->uc.uc_mcontext))  in SYSCALL_DEFINE0()
100 	signal_fault("bad sigreturn frame", regs, frame, 0);  in SYSCALL_DEFINE0()
108 int setup_sigcontext(struct sigcontext __user *sc, struct pt_regs *regs)  in setup_sigcontext()  argument
110 	return  __copy_to_user(sc, regs, sizeof(*regs));  in setup_sigcontext()
117 					struct pt_regs *regs,  in get_sigframe()  argument
123 	sp = regs->sp;  in get_sigframe()
149 			  struct pt_regs *regs)  in setup_rt_frame()  argument
155 	frame = get_sigframe(&ksig->ka, regs, sizeof(*frame));  in setup_rt_frame()
164 		regs->flags |= PT_FLAGS_RESTORE_REGS;  in setup_rt_frame()
173 	err |= __save_altstack(&frame->uc.uc_stack, regs->sp);  in setup_rt_frame()
174 	err |= setup_sigcontext(&frame->uc.uc_mcontext, regs);  in setup_rt_frame()
190 	regs->pc = (unsigned long) ksig->ka.sa.sa_handler;  in setup_rt_frame()
191 	regs->ex1 = PL_ICS_EX1(USER_PL, 1); /* set crit sec in handler */  in setup_rt_frame()
192 	regs->sp = (unsigned long) frame;  in setup_rt_frame()
193 	regs->lr = restorer;  in setup_rt_frame()
194 	regs->regs[0] = (unsigned long) sig;  in setup_rt_frame()
195 	regs->regs[1] = (unsigned long) &frame->info;  in setup_rt_frame()
196 	regs->regs[2] = (unsigned long) &frame->uc;  in setup_rt_frame()
197 	regs->flags |= PT_FLAGS_CALLER_SAVES;  in setup_rt_frame()
201 	trace_unhandled_signal("bad sigreturn frame", regs,  in setup_rt_frame()
210 static void handle_signal(struct ksignal *ksig, struct pt_regs *regs)  in handle_signal()  argument
216 	if (regs->faultnum == INT_SWINT_1) {  in handle_signal()
218 		switch (regs->regs[0]) {  in handle_signal()
221 			regs->regs[0] = -EINTR;  in handle_signal()
226 				regs->regs[0] = -EINTR;  in handle_signal()
232 			regs->flags |= PT_FLAGS_CALLER_SAVES;  in handle_signal()
233 			regs->regs[0] = regs->orig_r0;  in handle_signal()
234 			regs->pc -= 8;  in handle_signal()
241 		ret = compat_setup_rt_frame(ksig, oldset, regs);  in handle_signal()
244 		ret = setup_rt_frame(ksig, oldset, regs);  in handle_signal()
254 void do_signal(struct pt_regs *regs)  in do_signal()  argument
267 		handle_signal(&ksig, regs);  in do_signal()
272 	if (regs->faultnum == INT_SWINT_1) {  in do_signal()
274 		switch (regs->regs[0]) {  in do_signal()
278 			regs->flags |= PT_FLAGS_CALLER_SAVES;  in do_signal()
279 			regs->regs[0] = regs->orig_r0;  in do_signal()
280 			regs->pc -= 8;  in do_signal()
284 			regs->flags |= PT_FLAGS_CALLER_SAVES;  in do_signal()
285 			regs->regs[TREG_SYSCALL_NR] = __NR_restart_syscall;  in do_signal()
286 			regs->pc -= 8;  in do_signal()
296 	regs->faultnum = INT_SWINT_1_SIGRETURN;  in do_signal()
364 void trace_unhandled_signal(const char *type, struct pt_regs *regs,  in trace_unhandled_signal()  argument
386 	       tsk->comm, task_pid_nr(tsk), type, address, regs->pc, sig);  in trace_unhandled_signal()
388 	print_vma_addr(KERN_CONT " in ", regs->pc);  in trace_unhandled_signal()
399 			       sig, regs->faultnum, address);  in trace_unhandled_signal()
400 			show_regs(regs);  in trace_unhandled_signal()
405 			       sig, regs->faultnum);  in trace_unhandled_signal()