47 	get_user_ex(regs->x, &sc->x);			\
57 	regs->seg = GET_SEG(seg);			\
61 	regs->seg = GET_SEG(seg) | 3;			\
64 int restore_sigcontext(struct pt_regs *regs, struct sigcontext __user *sc)  in restore_sigcontext()  argument
76 		set_user_gs(regs, GET_SEG(gs));  in restore_sigcontext()
107 		regs->flags = (regs->flags & ~FIX_EFLAGS) | (tmpflags & FIX_EFLAGS);  in restore_sigcontext()
108 		regs->orig_ax = -1;		/* disable syscall checks */  in restore_sigcontext()
121 		     struct pt_regs *regs, unsigned long mask)  in setup_sigcontext()  argument
128 		put_user_ex(get_user_gs(regs), (unsigned int __user *)&sc->gs);  in setup_sigcontext()
129 		put_user_ex(regs->fs, (unsigned int __user *)&sc->fs);  in setup_sigcontext()
130 		put_user_ex(regs->es, (unsigned int __user *)&sc->es);  in setup_sigcontext()
131 		put_user_ex(regs->ds, (unsigned int __user *)&sc->ds);  in setup_sigcontext()
134 		put_user_ex(regs->di, &sc->di);  in setup_sigcontext()
135 		put_user_ex(regs->si, &sc->si);  in setup_sigcontext()
136 		put_user_ex(regs->bp, &sc->bp);  in setup_sigcontext()
137 		put_user_ex(regs->sp, &sc->sp);  in setup_sigcontext()
138 		put_user_ex(regs->bx, &sc->bx);  in setup_sigcontext()
139 		put_user_ex(regs->dx, &sc->dx);  in setup_sigcontext()
140 		put_user_ex(regs->cx, &sc->cx);  in setup_sigcontext()
141 		put_user_ex(regs->ax, &sc->ax);  in setup_sigcontext()
143 		put_user_ex(regs->r8, &sc->r8);  in setup_sigcontext()
144 		put_user_ex(regs->r9, &sc->r9);  in setup_sigcontext()
145 		put_user_ex(regs->r10, &sc->r10);  in setup_sigcontext()
146 		put_user_ex(regs->r11, &sc->r11);  in setup_sigcontext()
147 		put_user_ex(regs->r12, &sc->r12);  in setup_sigcontext()
148 		put_user_ex(regs->r13, &sc->r13);  in setup_sigcontext()
149 		put_user_ex(regs->r14, &sc->r14);  in setup_sigcontext()
150 		put_user_ex(regs->r15, &sc->r15);  in setup_sigcontext()
155 		put_user_ex(regs->ip, &sc->ip);  in setup_sigcontext()
157 		put_user_ex(regs->cs, (unsigned int __user *)&sc->cs);  in setup_sigcontext()
158 		put_user_ex(regs->flags, &sc->flags);  in setup_sigcontext()
159 		put_user_ex(regs->sp, &sc->sp_at_signal);  in setup_sigcontext()
160 		put_user_ex(regs->ss, (unsigned int __user *)&sc->ss);  in setup_sigcontext()
162 		put_user_ex(regs->flags, &sc->flags);  in setup_sigcontext()
163 		put_user_ex(regs->cs, &sc->cs);  in setup_sigcontext()
200 get_sigframe(struct k_sigaction *ka, struct pt_regs *regs, size_t frame_size,  in get_sigframe()  argument
205 	unsigned long sp = regs->sp;  in get_sigframe()
219 			   (regs->ss & 0xffff) != __USER_DS &&  in get_sigframe()
275 	      struct pt_regs *regs)  in __setup_frame()  argument
282 	frame = get_sigframe(&ksig->ka, regs, sizeof(*frame), &fpstate);  in __setup_frame()
290 	if (setup_sigcontext(&frame->sc, fpstate, regs, set->sig[0]))  in __setup_frame()
323 	regs->sp = (unsigned long)frame;  in __setup_frame()
324 	regs->ip = (unsigned long)ksig->ka.sa.sa_handler;  in __setup_frame()
325 	regs->ax = (unsigned long)sig;  in __setup_frame()
326 	regs->dx = 0;  in __setup_frame()
327 	regs->cx = 0;  in __setup_frame()
329 	regs->ds = __USER_DS;  in __setup_frame()
330 	regs->es = __USER_DS;  in __setup_frame()
331 	regs->ss = __USER_DS;  in __setup_frame()
332 	regs->cs = __USER_CS;  in __setup_frame()
338 			    sigset_t *set, struct pt_regs *regs)  in __setup_rt_frame()  argument
345 	frame = get_sigframe(&ksig->ka, regs, sizeof(*frame), &fpstate);  in __setup_rt_frame()
361 		save_altstack_ex(&frame->uc.uc_stack, regs->sp);  in __setup_rt_frame()
382 				regs, set->sig[0]);  in __setup_rt_frame()
389 	regs->sp = (unsigned long)frame;  in __setup_rt_frame()
390 	regs->ip = (unsigned long)ksig->ka.sa.sa_handler;  in __setup_rt_frame()
391 	regs->ax = (unsigned long)sig;  in __setup_rt_frame()
392 	regs->dx = (unsigned long)&frame->info;  in __setup_rt_frame()
393 	regs->cx = (unsigned long)&frame->uc;  in __setup_rt_frame()
395 	regs->ds = __USER_DS;  in __setup_rt_frame()
396 	regs->es = __USER_DS;  in __setup_rt_frame()
397 	regs->ss = __USER_DS;  in __setup_rt_frame()
398 	regs->cs = __USER_CS;  in __setup_rt_frame()
404 			    sigset_t *set, struct pt_regs *regs)  in __setup_rt_frame()  argument
410 	frame = get_sigframe(&ksig->ka, regs, sizeof(struct rt_sigframe), &fp);  in __setup_rt_frame()
427 		save_altstack_ex(&frame->uc.uc_stack, regs->sp);  in __setup_rt_frame()
440 	err |= setup_sigcontext(&frame->uc.uc_mcontext, fp, regs, set->sig[0]);  in __setup_rt_frame()
447 	regs->di = sig;  in __setup_rt_frame()
449 	regs->ax = 0;  in __setup_rt_frame()
453 	regs->si = (unsigned long)&frame->info;  in __setup_rt_frame()
454 	regs->dx = (unsigned long)&frame->uc;  in __setup_rt_frame()
455 	regs->ip = (unsigned long) ksig->ka.sa.sa_handler;  in __setup_rt_frame()
457 	regs->sp = (unsigned long)frame;  in __setup_rt_frame()
461 	regs->cs = __USER_CS;  in __setup_rt_frame()
469 			      struct pt_regs *regs)  in x32_setup_rt_frame()  argument
477 	frame = get_sigframe(&ksig->ka, regs, sizeof(*frame), &fpstate);  in x32_setup_rt_frame()
494 		compat_save_altstack_ex(&frame->uc.uc_stack, regs->sp);  in x32_setup_rt_frame()
508 				regs, set->sig[0]);  in x32_setup_rt_frame()
515 	regs->sp = (unsigned long) frame;  in x32_setup_rt_frame()
516 	regs->ip = (unsigned long) ksig->ka.sa.sa_handler;  in x32_setup_rt_frame()
519 	regs->di = ksig->sig;  in x32_setup_rt_frame()
520 	regs->si = (unsigned long) &frame->info;  in x32_setup_rt_frame()
521 	regs->dx = (unsigned long) &frame->uc;  in x32_setup_rt_frame()
526 	regs->cs = __USER_CS;  in x32_setup_rt_frame()
527 	regs->ss = __USER_DS;  in x32_setup_rt_frame()
539 	struct pt_regs *regs = current_pt_regs();  in sys_sigreturn()  local
543 	frame = (struct sigframe __user *)(regs->sp - 8);  in sys_sigreturn()
554 	if (restore_sigcontext(regs, &frame->sc))  in sys_sigreturn()
556 	return regs->ax;  in sys_sigreturn()
559 	signal_fault(regs, frame, "sigreturn");  in sys_sigreturn()
567 	struct pt_regs *regs = current_pt_regs();  in sys_rt_sigreturn()  local
571 	frame = (struct rt_sigframe __user *)(regs->sp - sizeof(long));  in sys_rt_sigreturn()
579 	if (restore_sigcontext(regs, &frame->uc.uc_mcontext))  in sys_rt_sigreturn()
585 	return regs->ax;  in sys_rt_sigreturn()
588 	signal_fault(regs, frame, "rt_sigreturn");  in sys_rt_sigreturn()
593 setup_rt_frame(struct ksignal *ksig, struct pt_regs *regs)  in setup_rt_frame()  argument
602 			return ia32_setup_rt_frame(usig, ksig, cset, regs);  in setup_rt_frame()
604 			return ia32_setup_frame(usig, ksig, cset, regs);  in setup_rt_frame()
606 		return x32_setup_rt_frame(ksig, cset, regs);  in setup_rt_frame()
608 		return __setup_rt_frame(ksig->sig, ksig, set, regs);  in setup_rt_frame()
613 handle_signal(struct ksignal *ksig, struct pt_regs *regs)  in handle_signal()  argument
618 	if (syscall_get_nr(current, regs) >= 0) {  in handle_signal()
620 		switch (syscall_get_error(current, regs)) {  in handle_signal()
623 			regs->ax = -EINTR;  in handle_signal()
628 				regs->ax = -EINTR;  in handle_signal()
633 			regs->ax = regs->orig_ax;  in handle_signal()
634 			regs->ip -= 2;  in handle_signal()
648 	failed = (setup_rt_frame(ksig, regs) < 0);  in handle_signal()
660 		regs->flags &= ~(X86_EFLAGS_DF|X86_EFLAGS_RF|X86_EFLAGS_TF);  in handle_signal()
670 static inline unsigned long get_nr_restart_syscall(const struct pt_regs *regs)  in get_nr_restart_syscall()  argument
676 		__NR_restart_syscall | (regs->orig_ax & __X32_SYSCALL_BIT);  in get_nr_restart_syscall()
685 static void do_signal(struct pt_regs *regs)  in do_signal()  argument
691 		handle_signal(&ksig, regs);  in do_signal()
696 	if (syscall_get_nr(current, regs) >= 0) {  in do_signal()
698 		switch (syscall_get_error(current, regs)) {  in do_signal()
702 			regs->ax = regs->orig_ax;  in do_signal()
703 			regs->ip -= 2;  in do_signal()
707 			regs->ax = get_nr_restart_syscall(regs);  in do_signal()
708 			regs->ip -= 2;  in do_signal()
725 do_notify_resume(struct pt_regs *regs, void *unused, __u32 thread_info_flags)  in do_notify_resume()  argument
730 		uprobe_notify_resume(regs);  in do_notify_resume()
734 		do_signal(regs);  in do_notify_resume()
738 		tracehook_notify_resume(regs);  in do_notify_resume()
746 void signal_fault(struct pt_regs *regs, void __user *frame, char *where)  in signal_fault()  argument
755 		       regs->ip, regs->sp, regs->orig_ax);  in signal_fault()
756 		print_vma_addr(" in ", regs->ip);  in signal_fault()
766 	struct pt_regs *regs = current_pt_regs();  in sys32_x32_rt_sigreturn()  local
770 	frame = (struct rt_sigframe_x32 __user *)(regs->sp - 8);  in sys32_x32_rt_sigreturn()
779 	if (restore_sigcontext(regs, &frame->uc.uc_mcontext))  in sys32_x32_rt_sigreturn()
785 	return regs->ax;  in sys32_x32_rt_sigreturn()
788 	signal_fault(regs, frame, "x32 rt_sigreturn");  in sys32_x32_rt_sigreturn()