27 static void __user *get_sigframe(struct ksignal *ksig, struct pt_regs *regs,  in get_sigframe()  argument
30 	unsigned long sp = sigsp(regs->r29, ksig);  in get_sigframe()
35 static int setup_sigcontext(struct pt_regs *regs, struct sigcontext __user *sc)  in setup_sigcontext()  argument
40 	err |= copy_to_user(&sc->sc_regs.r0, &regs->r00,  in setup_sigcontext()
43 	err |= __put_user(regs->sa0, &sc->sc_regs.sa0);  in setup_sigcontext()
44 	err |= __put_user(regs->lc0, &sc->sc_regs.lc0);  in setup_sigcontext()
45 	err |= __put_user(regs->sa1, &sc->sc_regs.sa1);  in setup_sigcontext()
46 	err |= __put_user(regs->lc1, &sc->sc_regs.lc1);  in setup_sigcontext()
47 	err |= __put_user(regs->m0, &sc->sc_regs.m0);  in setup_sigcontext()
48 	err |= __put_user(regs->m1, &sc->sc_regs.m1);  in setup_sigcontext()
49 	err |= __put_user(regs->usr, &sc->sc_regs.usr);  in setup_sigcontext()
50 	err |= __put_user(regs->preds, &sc->sc_regs.p3_0);  in setup_sigcontext()
51 	err |= __put_user(regs->gp, &sc->sc_regs.gp);  in setup_sigcontext()
52 	err |= __put_user(regs->ugp, &sc->sc_regs.ugp);  in setup_sigcontext()
54 	err |= __put_user(regs->cs0, &sc->sc_regs.cs0);  in setup_sigcontext()
55 	err |= __put_user(regs->cs1, &sc->sc_regs.cs1);  in setup_sigcontext()
57 	tmp = pt_elr(regs); err |= __put_user(tmp, &sc->sc_regs.pc);  in setup_sigcontext()
58 	tmp = pt_cause(regs); err |= __put_user(tmp, &sc->sc_regs.cause);  in setup_sigcontext()
59 	tmp = pt_badva(regs); err |= __put_user(tmp, &sc->sc_regs.badva);  in setup_sigcontext()
64 static int restore_sigcontext(struct pt_regs *regs,  in restore_sigcontext()  argument
70 	err |= copy_from_user(&regs->r00, &sc->sc_regs.r0,  in restore_sigcontext()
73 	err |= __get_user(regs->sa0, &sc->sc_regs.sa0);  in restore_sigcontext()
74 	err |= __get_user(regs->lc0, &sc->sc_regs.lc0);  in restore_sigcontext()
75 	err |= __get_user(regs->sa1, &sc->sc_regs.sa1);  in restore_sigcontext()
76 	err |= __get_user(regs->lc1, &sc->sc_regs.lc1);  in restore_sigcontext()
77 	err |= __get_user(regs->m0, &sc->sc_regs.m0);  in restore_sigcontext()
78 	err |= __get_user(regs->m1, &sc->sc_regs.m1);  in restore_sigcontext()
79 	err |= __get_user(regs->usr, &sc->sc_regs.usr);  in restore_sigcontext()
80 	err |= __get_user(regs->preds, &sc->sc_regs.p3_0);  in restore_sigcontext()
81 	err |= __get_user(regs->gp, &sc->sc_regs.gp);  in restore_sigcontext()
82 	err |= __get_user(regs->ugp, &sc->sc_regs.ugp);  in restore_sigcontext()
84 	err |= __get_user(regs->cs0, &sc->sc_regs.cs0);  in restore_sigcontext()
85 	err |= __get_user(regs->cs1, &sc->sc_regs.cs1);  in restore_sigcontext()
87 	err |= __get_user(tmp, &sc->sc_regs.pc); pt_set_elr(regs, tmp);  in restore_sigcontext()
96 			  struct pt_regs *regs)  in setup_rt_frame()  argument
102 	frame = get_sigframe(ksig, regs, sizeof(struct rt_sigframe));  in setup_rt_frame()
116 	err |= setup_sigcontext(regs, &frame->uc.uc_mcontext);  in setup_rt_frame()
118 	err |= __save_altstack(&frame->uc.uc_stack, user_stack_pointer(regs));  in setup_rt_frame()
123 	regs->r0100 = ((unsigned long long)((unsigned long)&frame->info) << 32)  in setup_rt_frame()
125 	regs->r02 = (unsigned long) &frame->uc;  in setup_rt_frame()
126 	regs->r31 = (unsigned long) vdso->rt_signal_trampoline;  in setup_rt_frame()
127 	pt_psp(regs) = (unsigned long) frame;  in setup_rt_frame()
128 	pt_set_elr(regs, (unsigned long)ksig->ka.sa.sa_handler);  in setup_rt_frame()
136 static void handle_signal(struct ksignal *ksig, struct pt_regs *regs)  in handle_signal()  argument
146 	if (regs->syscall_nr >= 0) {  in handle_signal()
147 		switch (regs->r00) {  in handle_signal()
150 			regs->r00 = -EINTR;  in handle_signal()
154 				regs->r00 = -EINTR;  in handle_signal()
159 			regs->r06 = regs->syscall_nr;  in handle_signal()
160 			pt_set_elr(regs, pt_elr(regs) - 4);  in handle_signal()
161 			regs->r00 = regs->restart_r0;  in handle_signal()
173 	ret = setup_rt_frame(ksig, sigmask_to_save(), regs);  in handle_signal()
181 void do_signal(struct pt_regs *regs)  in do_signal()  argument
185 	if (!user_mode(regs))  in do_signal()
189 		handle_signal(&ksig, regs);  in do_signal()
197 	if (regs->syscall_nr >= 0) {  in do_signal()
198 		switch (regs->r00) {  in do_signal()
202 			regs->r06 = regs->syscall_nr;  in do_signal()
205 			regs->r06 = __NR_restart_syscall;  in do_signal()
210 		pt_set_elr(regs, pt_elr(regs) - 4);  in do_signal()
211 		regs->r00 = regs->restart_r0;  in do_signal()
225 	struct pt_regs *regs = current_pt_regs();  in SYSCALL_DEFINE0()  local
232 	frame = (struct rt_sigframe __user *)pt_psp(regs);  in SYSCALL_DEFINE0()
240 	if (restore_sigcontext(regs, &frame->uc.uc_mcontext))  in SYSCALL_DEFINE0()
244 	pt_psp(regs) = regs->r29;  in SYSCALL_DEFINE0()
246 	regs->syscall_nr = -1;  in SYSCALL_DEFINE0()
251 	return regs->r00;  in SYSCALL_DEFINE0()