43 static int restore_sigcontext(struct pt_regs *regs,  in restore_sigcontext()  argument
56 	err |= __copy_from_user(regs, sc->regs.gpr, 32 * sizeof(unsigned long));  in restore_sigcontext()
57 	err |= __copy_from_user(&regs->pc, &sc->regs.pc, sizeof(unsigned long));  in restore_sigcontext()
58 	err |= __copy_from_user(&regs->sr, &sc->regs.sr, sizeof(unsigned long));  in restore_sigcontext()
61 	regs->sr &= ~SPR_SR_SM;  in restore_sigcontext()
63 	regs->orig_gpr11 = -1;	/* Avoid syscall restart checks */  in restore_sigcontext()
73 asmlinkage long _sys_rt_sigreturn(struct pt_regs *regs)  in _sys_rt_sigreturn()  argument
75 	struct rt_sigframe *frame = (struct rt_sigframe __user *)regs->sp;  in _sys_rt_sigreturn()
93 	if (restore_sigcontext(regs, &frame->uc.uc_mcontext))  in _sys_rt_sigreturn()
99 	return regs->gpr[11];  in _sys_rt_sigreturn()
110 static int setup_sigcontext(struct pt_regs *regs, struct sigcontext __user *sc)  in setup_sigcontext()  argument
118 	err |= __copy_to_user(sc->regs.gpr, regs, 32 * sizeof(unsigned long));  in setup_sigcontext()
119 	err |= __copy_to_user(&sc->regs.pc, &regs->pc, sizeof(unsigned long));  in setup_sigcontext()
120 	err |= __copy_to_user(&sc->regs.sr, &regs->sr, sizeof(unsigned long));  in setup_sigcontext()
136 					struct pt_regs *regs, size_t frame_size)  in get_sigframe()  argument
138 	unsigned long sp = regs->sp;  in get_sigframe()
156 			  struct pt_regs *regs)  in setup_rt_frame()  argument
162 	frame = get_sigframe(ksig, regs, sizeof(*frame));  in setup_rt_frame()
174 	err |= __save_altstack(&frame->uc.uc_stack, regs->sp);  in setup_rt_frame()
175 	err |= setup_sigcontext(regs, &frame->uc.uc_mcontext);  in setup_rt_frame()
197 	regs->pc = (unsigned long)ksig->ka.sa.sa_handler; /* what we enter NOW */  in setup_rt_frame()
198 	regs->gpr[9] = (unsigned long)return_ip;     /* what we enter LATER */  in setup_rt_frame()
199 	regs->gpr[3] = (unsigned long)ksig->sig;           /* arg 1: signo */  in setup_rt_frame()
200 	regs->gpr[4] = (unsigned long)&frame->info;  /* arg 2: (siginfo_t*) */  in setup_rt_frame()
201 	regs->gpr[5] = (unsigned long)&frame->uc;    /* arg 3: ucontext */  in setup_rt_frame()
204 	regs->sp = (unsigned long)frame;  in setup_rt_frame()
210 handle_signal(struct ksignal *ksig, struct pt_regs *regs)  in handle_signal()  argument
214 	ret = setup_rt_frame(ksig, sigmask_to_save(), regs);  in handle_signal()
231 int do_signal(struct pt_regs *regs, int syscall)  in do_signal()  argument
240 		continue_addr = regs->pc;  in do_signal()
242 		retval = regs->gpr[11];  in do_signal()
256 			regs->gpr[11] = regs->orig_gpr11;  in do_signal()
257 			regs->pc = restart_addr;  in do_signal()
269 		if (unlikely(restart) && regs->pc == restart_addr) {  in do_signal()
275 				regs->gpr[11] = -EINTR;  in do_signal()
276 				regs->pc = continue_addr;  in do_signal()
279 		handle_signal(&ksig, regs);  in do_signal()
287 		if (unlikely(restart) && regs->pc == restart_addr) {  in do_signal()
288 			regs->pc = continue_addr;  in do_signal()
297 do_work_pending(struct pt_regs *regs, unsigned int thread_flags, int syscall)  in do_work_pending()  argument
303 			if (unlikely(!user_mode(regs)))  in do_work_pending()
307 				int restart = do_signal(regs, syscall);  in do_work_pending()
319 				tracehook_notify_resume(regs);  in do_work_pending()