um/kernel/trap.c

134 static void show_segv_info(struct uml_pt_regs *regs)
137 	struct faultinfo *fi = UPT_FAULTINFO(regs);
148 		(void *)UPT_IP(regs), (void *)UPT_SP(regs),
151 	print_vma_addr(KERN_CONT " in ", UPT_IP(regs));
164 	do_signal(&current->thread.regs);
177  * @regs:	the ptrace register information
179  * The handler first extracts the faultinfo from the UML ptrace regs struct.
183 void segv_handler(int sig, struct siginfo *unused_si, struct uml_pt_regs *regs)
185 	struct faultinfo * fi = UPT_FAULTINFO(regs);
187 	if (UPT_IS_USER(regs) && !SEGV_IS_FIXABLE(fi)) {
188 		show_segv_info(regs);
189 		bad_segv(*fi, UPT_IP(regs));
192 	segv(*fi, UPT_IP(regs), UPT_IS_USER(regs), regs);
196  * We give a *copy* of the faultinfo in the regs to segv.
198  * the info in the regs. A pointer to the info then would
202 		   struct uml_pt_regs *regs)
210 	if (!is_user && regs)
211 		current->thread.segv_regs = container_of(regs, struct pt_regs, regs);
218 		show_regs(container_of(regs, struct pt_regs, regs));
222 		show_regs(container_of(regs, struct pt_regs, regs));
249 	else if (!is_user && arch_fixup(ip, regs))
253 		show_regs(container_of(regs, struct pt_regs, regs));
258 	show_segv_info(regs);
270 	if (regs)
276 void relay_signal(int sig, struct siginfo *si, struct uml_pt_regs *regs)
279 	if (!UPT_IS_USER(regs)) {
286 	arch_examine_signal(sig, regs);
294 		struct faultinfo *fi = UPT_FAULTINFO(regs);
304 void bus_handler(int sig, struct siginfo *si, struct uml_pt_regs *regs)
309 		relay_signal(sig, si, regs);
312 void winch(int sig, struct siginfo *unused_si, struct uml_pt_regs *regs)
314 	do_IRQ(WINCH_IRQ, regs);