90 				      struct pt_regs *regs)  in save_sigcontext_fpu()  argument
108 	unlazy_fpu(tsk, regs);  in save_sigcontext_fpu()
115 restore_sigcontext(struct pt_regs *regs, struct sigcontext __user *sc, int *r0_p)  in restore_sigcontext()  argument
118 	unsigned int sr = regs->sr & ~SR_USER_MASK;  in restore_sigcontext()
120 #define COPY(x)		err |= __get_user(regs->x, &sc->sc_##x)  in restore_sigcontext()
121 			COPY(regs[1]);  in restore_sigcontext()
122 	COPY(regs[2]);	COPY(regs[3]);  in restore_sigcontext()
123 	COPY(regs[4]);	COPY(regs[5]);  in restore_sigcontext()
124 	COPY(regs[6]);	COPY(regs[7]);  in restore_sigcontext()
125 	COPY(regs[8]);	COPY(regs[9]);  in restore_sigcontext()
126 	COPY(regs[10]);	COPY(regs[11]);  in restore_sigcontext()
127 	COPY(regs[12]);	COPY(regs[13]);  in restore_sigcontext()
128 	COPY(regs[14]);	COPY(regs[15]);  in restore_sigcontext()
134 	regs->sr = (regs->sr & SR_USER_MASK) | sr;  in restore_sigcontext()
141 		regs->sr |= SR_FD; /* Release FPU */  in restore_sigcontext()
142 		clear_fpu(tsk, regs);  in restore_sigcontext()
150 	regs->tra = -1;		/* disable syscall checks */  in restore_sigcontext()
157 	struct pt_regs *regs = current_pt_regs();  in sys_sigreturn()  local
158 	struct sigframe __user *frame = (struct sigframe __user *)regs->regs[15];  in sys_sigreturn()
176 	if (restore_sigcontext(regs, &frame->sc, &r0))  in sys_sigreturn()
187 	struct pt_regs *regs = current_pt_regs();  in sys_rt_sigreturn()  local
188 	struct rt_sigframe __user *frame = (struct rt_sigframe __user *)regs->regs[15];  in sys_rt_sigreturn()
203 	if (restore_sigcontext(regs, &frame->uc.uc_mcontext, &r0))  in sys_rt_sigreturn()
221 setup_sigcontext(struct sigcontext __user *sc, struct pt_regs *regs,  in setup_sigcontext()  argument
226 #define COPY(x)		err |= __put_user(regs->x, &sc->sc_##x)  in setup_sigcontext()
227 	COPY(regs[0]);	COPY(regs[1]);  in setup_sigcontext()
228 	COPY(regs[2]);	COPY(regs[3]);  in setup_sigcontext()
229 	COPY(regs[4]);	COPY(regs[5]);  in setup_sigcontext()
230 	COPY(regs[6]);	COPY(regs[7]);  in setup_sigcontext()
231 	COPY(regs[8]);	COPY(regs[9]);  in setup_sigcontext()
232 	COPY(regs[10]);	COPY(regs[11]);  in setup_sigcontext()
233 	COPY(regs[12]);	COPY(regs[13]);  in setup_sigcontext()
234 	COPY(regs[14]);	COPY(regs[15]);  in setup_sigcontext()
241 	err |= save_sigcontext_fpu(sc, regs);  in setup_sigcontext()
270 		       struct pt_regs *regs)  in setup_frame()  argument
275 	frame = get_sigframe(&ksig->ka, regs->regs[15], sizeof(*frame));  in setup_frame()
280 	err |= setup_sigcontext(&frame->sc, regs, set->sig[0]);  in setup_frame()
289 		regs->pr = (unsigned long) ksig->ka.sa.sa_restorer;  in setup_frame()
292 		regs->pr = VDSO_SYM(&__kernel_sigreturn);  in setup_frame()
304 		regs->pr = (unsigned long) frame->retcode;  in setup_frame()
305 		flush_icache_range(regs->pr, regs->pr + sizeof(frame->retcode));  in setup_frame()
312 	regs->regs[15] = (unsigned long) frame;  in setup_frame()
313 	regs->regs[4] = sig; /* Arg for signal handler */  in setup_frame()
314 	regs->regs[5] = 0;  in setup_frame()
315 	regs->regs[6] = (unsigned long) &frame->sc;  in setup_frame()
321 		err |= __get_user(regs->pc, &funcptr->text);  in setup_frame()
322 		err |= __get_user(regs->regs[12], &funcptr->GOT);  in setup_frame()
324 		regs->pc = (unsigned long)ksig->ka.sa.sa_handler;  in setup_frame()
330 		 current->comm, task_pid_nr(current), frame, regs->pc, regs->pr);  in setup_frame()
336 			  struct pt_regs *regs)  in setup_rt_frame()  argument
341 	frame = get_sigframe(&ksig->ka, regs->regs[15], sizeof(*frame));  in setup_rt_frame()
351 	err |= __save_altstack(&frame->uc.uc_stack, regs->regs[15]);  in setup_rt_frame()
353 			        regs, set->sig[0]);  in setup_rt_frame()
359 		regs->pr = (unsigned long) ksig->ka.sa.sa_restorer;  in setup_rt_frame()
362 		regs->pr = VDSO_SYM(&__kernel_rt_sigreturn);  in setup_rt_frame()
374 		regs->pr = (unsigned long) frame->retcode;  in setup_rt_frame()
375 		flush_icache_range(regs->pr, regs->pr + sizeof(frame->retcode));  in setup_rt_frame()
382 	regs->regs[15] = (unsigned long) frame;  in setup_rt_frame()
383 	regs->regs[4] = sig; /* Arg for signal handler */  in setup_rt_frame()
384 	regs->regs[5] = (unsigned long) &frame->info;  in setup_rt_frame()
385 	regs->regs[6] = (unsigned long) &frame->uc;  in setup_rt_frame()
391 		err |= __get_user(regs->pc, &funcptr->text);  in setup_rt_frame()
392 		err |= __get_user(regs->regs[12], &funcptr->GOT);  in setup_rt_frame()
394 		regs->pc = (unsigned long)ksig->ka.sa.sa_handler;  in setup_rt_frame()
400 		 current->comm, task_pid_nr(current), frame, regs->pc, regs->pr);  in setup_rt_frame()
406 handle_syscall_restart(unsigned long save_r0, struct pt_regs *regs,  in handle_syscall_restart()  argument
410 	if (regs->tra < 0)  in handle_syscall_restart()
414 	switch (regs->regs[0]) {  in handle_syscall_restart()
418 			regs->regs[0] = -EINTR;  in handle_syscall_restart()
426 			regs->regs[0] = save_r0;  in handle_syscall_restart()
427 			regs->pc -= instruction_size(__raw_readw(regs->pc - 4));  in handle_syscall_restart()
436 handle_signal(struct ksignal *ksig, struct pt_regs *regs, unsigned int save_r0)  in handle_signal()  argument
443 		ret = setup_rt_frame(ksig, oldset, regs);  in handle_signal()
445 		ret = setup_frame(ksig, oldset, regs);  in handle_signal()
459 static void do_signal(struct pt_regs *regs, unsigned int save_r0)  in do_signal()  argument
469 	if (!user_mode(regs))  in do_signal()
473 		handle_syscall_restart(save_r0, regs, &ksig.ka.sa);  in do_signal()
476 		handle_signal(&ksig, regs, save_r0);  in do_signal()
481 	if (regs->tra >= 0) {  in do_signal()
483 		if (regs->regs[0] == -ERESTARTNOHAND ||  in do_signal()
484 		    regs->regs[0] == -ERESTARTSYS ||  in do_signal()
485 		    regs->regs[0] == -ERESTARTNOINTR) {  in do_signal()
486 			regs->regs[0] = save_r0;  in do_signal()
487 			regs->pc -= instruction_size(__raw_readw(regs->pc - 4));  in do_signal()
488 		} else if (regs->regs[0] == -ERESTART_RESTARTBLOCK) {  in do_signal()
489 			regs->pc -= instruction_size(__raw_readw(regs->pc - 4));  in do_signal()
490 			regs->regs[3] = __NR_restart_syscall;  in do_signal()
501 asmlinkage void do_notify_resume(struct pt_regs *regs, unsigned int save_r0,  in do_notify_resume()  argument
506 		do_signal(regs, save_r0);  in do_notify_resume()
509 		resume_user_mode_work(regs);  in do_notify_resume()