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
77 		set_user_gs(regs, GET_SEG(gs));  in restore_sigcontext()
108 		regs->flags = (regs->flags & ~FIX_EFLAGS) | (tmpflags & FIX_EFLAGS);  in restore_sigcontext()
109 		regs->orig_ax = -1;		/* disable syscall checks */  in restore_sigcontext()
123 		     struct pt_regs *regs, unsigned long mask)  in setup_sigcontext()  argument
130 		put_user_ex(get_user_gs(regs), (unsigned int __user *)&sc->gs);  in setup_sigcontext()
131 		put_user_ex(regs->fs, (unsigned int __user *)&sc->fs);  in setup_sigcontext()
132 		put_user_ex(regs->es, (unsigned int __user *)&sc->es);  in setup_sigcontext()
133 		put_user_ex(regs->ds, (unsigned int __user *)&sc->ds);  in setup_sigcontext()
136 		put_user_ex(regs->di, &sc->di);  in setup_sigcontext()
137 		put_user_ex(regs->si, &sc->si);  in setup_sigcontext()
138 		put_user_ex(regs->bp, &sc->bp);  in setup_sigcontext()
139 		put_user_ex(regs->sp, &sc->sp);  in setup_sigcontext()
140 		put_user_ex(regs->bx, &sc->bx);  in setup_sigcontext()
141 		put_user_ex(regs->dx, &sc->dx);  in setup_sigcontext()
142 		put_user_ex(regs->cx, &sc->cx);  in setup_sigcontext()
143 		put_user_ex(regs->ax, &sc->ax);  in setup_sigcontext()
145 		put_user_ex(regs->r8, &sc->r8);  in setup_sigcontext()
146 		put_user_ex(regs->r9, &sc->r9);  in setup_sigcontext()
147 		put_user_ex(regs->r10, &sc->r10);  in setup_sigcontext()
148 		put_user_ex(regs->r11, &sc->r11);  in setup_sigcontext()
149 		put_user_ex(regs->r12, &sc->r12);  in setup_sigcontext()
150 		put_user_ex(regs->r13, &sc->r13);  in setup_sigcontext()
151 		put_user_ex(regs->r14, &sc->r14);  in setup_sigcontext()
152 		put_user_ex(regs->r15, &sc->r15);  in setup_sigcontext()
157 		put_user_ex(regs->ip, &sc->ip);  in setup_sigcontext()
159 		put_user_ex(regs->cs, (unsigned int __user *)&sc->cs);  in setup_sigcontext()
160 		put_user_ex(regs->flags, &sc->flags);  in setup_sigcontext()
161 		put_user_ex(regs->sp, &sc->sp_at_signal);  in setup_sigcontext()
162 		put_user_ex(regs->ss, (unsigned int __user *)&sc->ss);  in setup_sigcontext()
164 		put_user_ex(regs->flags, &sc->flags);  in setup_sigcontext()
165 		put_user_ex(regs->cs, &sc->cs);  in setup_sigcontext()
202 get_sigframe(struct k_sigaction *ka, struct pt_regs *regs, size_t frame_size,  in get_sigframe()  argument
207 	unsigned long sp = regs->sp;  in get_sigframe()
222 			   (regs->ss & 0xffff) != __USER_DS &&  in get_sigframe()
278 	      struct pt_regs *regs)  in __setup_frame()  argument
285 	frame = get_sigframe(&ksig->ka, regs, sizeof(*frame), &fpstate);  in __setup_frame()
293 	if (setup_sigcontext(&frame->sc, fpstate, regs, set->sig[0]))  in __setup_frame()
326 	regs->sp = (unsigned long)frame;  in __setup_frame()
327 	regs->ip = (unsigned long)ksig->ka.sa.sa_handler;  in __setup_frame()
328 	regs->ax = (unsigned long)sig;  in __setup_frame()
329 	regs->dx = 0;  in __setup_frame()
330 	regs->cx = 0;  in __setup_frame()
332 	regs->ds = __USER_DS;  in __setup_frame()
333 	regs->es = __USER_DS;  in __setup_frame()
334 	regs->ss = __USER_DS;  in __setup_frame()
335 	regs->cs = __USER_CS;  in __setup_frame()
341 			    sigset_t *set, struct pt_regs *regs)  in __setup_rt_frame()  argument
348 	frame = get_sigframe(&ksig->ka, regs, sizeof(*frame), &fpstate);  in __setup_rt_frame()
364 		save_altstack_ex(&frame->uc.uc_stack, regs->sp);  in __setup_rt_frame()
385 				regs, set->sig[0]);  in __setup_rt_frame()
392 	regs->sp = (unsigned long)frame;  in __setup_rt_frame()
393 	regs->ip = (unsigned long)ksig->ka.sa.sa_handler;  in __setup_rt_frame()
394 	regs->ax = (unsigned long)sig;  in __setup_rt_frame()
395 	regs->dx = (unsigned long)&frame->info;  in __setup_rt_frame()
396 	regs->cx = (unsigned long)&frame->uc;  in __setup_rt_frame()
398 	regs->ds = __USER_DS;  in __setup_rt_frame()
399 	regs->es = __USER_DS;  in __setup_rt_frame()
400 	regs->ss = __USER_DS;  in __setup_rt_frame()
401 	regs->cs = __USER_CS;  in __setup_rt_frame()
407 			    sigset_t *set, struct pt_regs *regs)  in __setup_rt_frame()  argument
413 	frame = get_sigframe(&ksig->ka, regs, sizeof(struct rt_sigframe), &fp);  in __setup_rt_frame()
430 		save_altstack_ex(&frame->uc.uc_stack, regs->sp);  in __setup_rt_frame()
443 	err |= setup_sigcontext(&frame->uc.uc_mcontext, fp, regs, set->sig[0]);  in __setup_rt_frame()
450 	regs->di = sig;  in __setup_rt_frame()
452 	regs->ax = 0;  in __setup_rt_frame()
456 	regs->si = (unsigned long)&frame->info;  in __setup_rt_frame()
457 	regs->dx = (unsigned long)&frame->uc;  in __setup_rt_frame()
458 	regs->ip = (unsigned long) ksig->ka.sa.sa_handler;  in __setup_rt_frame()
460 	regs->sp = (unsigned long)frame;  in __setup_rt_frame()
464 	regs->cs = __USER_CS;  in __setup_rt_frame()
472 			      struct pt_regs *regs)  in x32_setup_rt_frame()  argument
480 	frame = get_sigframe(&ksig->ka, regs, sizeof(*frame), &fpstate);  in x32_setup_rt_frame()
497 		compat_save_altstack_ex(&frame->uc.uc_stack, regs->sp);  in x32_setup_rt_frame()
511 				regs, set->sig[0]);  in x32_setup_rt_frame()
518 	regs->sp = (unsigned long) frame;  in x32_setup_rt_frame()
519 	regs->ip = (unsigned long) ksig->ka.sa.sa_handler;  in x32_setup_rt_frame()
522 	regs->di = ksig->sig;  in x32_setup_rt_frame()
523 	regs->si = (unsigned long) &frame->info;  in x32_setup_rt_frame()
524 	regs->dx = (unsigned long) &frame->uc;  in x32_setup_rt_frame()
529 	regs->cs = __USER_CS;  in x32_setup_rt_frame()
530 	regs->ss = __USER_DS;  in x32_setup_rt_frame()
542 	struct pt_regs *regs = current_pt_regs();  in sys_sigreturn()  local
546 	frame = (struct sigframe __user *)(regs->sp - 8);  in sys_sigreturn()
557 	if (restore_sigcontext(regs, &frame->sc))  in sys_sigreturn()
559 	return regs->ax;  in sys_sigreturn()
562 	signal_fault(regs, frame, "sigreturn");  in sys_sigreturn()
570 	struct pt_regs *regs = current_pt_regs();  in sys_rt_sigreturn()  local
574 	frame = (struct rt_sigframe __user *)(regs->sp - sizeof(long));  in sys_rt_sigreturn()
582 	if (restore_sigcontext(regs, &frame->uc.uc_mcontext))  in sys_rt_sigreturn()
588 	return regs->ax;  in sys_rt_sigreturn()
591 	signal_fault(regs, frame, "rt_sigreturn");  in sys_rt_sigreturn()
612 setup_rt_frame(struct ksignal *ksig, struct pt_regs *regs)  in setup_rt_frame()  argument
621 			return ia32_setup_rt_frame(usig, ksig, cset, regs);  in setup_rt_frame()
623 			return ia32_setup_frame(usig, ksig, cset, regs);  in setup_rt_frame()
625 		return x32_setup_rt_frame(ksig, cset, regs);  in setup_rt_frame()
627 		return __setup_rt_frame(ksig->sig, ksig, set, regs);  in setup_rt_frame()
632 handle_signal(struct ksignal *ksig, struct pt_regs *regs)  in handle_signal()  argument
637 	if (v8086_mode(regs))  in handle_signal()
638 		save_v86_state((struct kernel_vm86_regs *) regs, VM86_SIGNAL);  in handle_signal()
641 	if (syscall_get_nr(current, regs) >= 0) {  in handle_signal()
643 		switch (syscall_get_error(current, regs)) {  in handle_signal()
646 			regs->ax = -EINTR;  in handle_signal()
651 				regs->ax = -EINTR;  in handle_signal()
656 			regs->ax = regs->orig_ax;  in handle_signal()
657 			regs->ip -= 2;  in handle_signal()
671 	failed = (setup_rt_frame(ksig, regs) < 0);  in handle_signal()
683 		regs->flags &= ~(X86_EFLAGS_DF|X86_EFLAGS_RF|X86_EFLAGS_TF);  in handle_signal()
693 static inline unsigned long get_nr_restart_syscall(const struct pt_regs *regs)  in get_nr_restart_syscall()  argument
699 		__NR_restart_syscall | (regs->orig_ax & __X32_SYSCALL_BIT);  in get_nr_restart_syscall()
708 void do_signal(struct pt_regs *regs)  in do_signal()  argument
714 		handle_signal(&ksig, regs);  in do_signal()
719 	if (syscall_get_nr(current, regs) >= 0) {  in do_signal()
721 		switch (syscall_get_error(current, regs)) {  in do_signal()
725 			regs->ax = regs->orig_ax;  in do_signal()
726 			regs->ip -= 2;  in do_signal()
730 			regs->ax = get_nr_restart_syscall(regs);  in do_signal()
731 			regs->ip -= 2;  in do_signal()
743 void signal_fault(struct pt_regs *regs, void __user *frame, char *where)  in signal_fault()  argument
752 		       regs->ip, regs->sp, regs->orig_ax);  in signal_fault()
753 		print_vma_addr(" in ", regs->ip);  in signal_fault()
763 	struct pt_regs *regs = current_pt_regs();  in sys32_x32_rt_sigreturn()  local
767 	frame = (struct rt_sigframe_x32 __user *)(regs->sp - 8);  in sys32_x32_rt_sigreturn()
776 	if (restore_sigcontext(regs, &frame->uc.uc_mcontext))  in sys32_x32_rt_sigreturn()
782 	return regs->ax;  in sys32_x32_rt_sigreturn()
785 	signal_fault(regs, frame, "x32 rt_sigreturn");  in sys32_x32_rt_sigreturn()