155 static void save_previous_kprobe(struct kprobe_ctlblk *kcb)  in save_previous_kprobe()  argument
157 	kcb->prev_kprobe.kp = kprobe_running();  in save_previous_kprobe()
158 	kcb->prev_kprobe.status = kcb->kprobe_status;  in save_previous_kprobe()
159 	kcb->prev_kprobe.old_SR = kcb->kprobe_old_SR;  in save_previous_kprobe()
160 	kcb->prev_kprobe.saved_SR = kcb->kprobe_saved_SR;  in save_previous_kprobe()
161 	kcb->prev_kprobe.saved_epc = kcb->kprobe_saved_epc;  in save_previous_kprobe()
164 static void restore_previous_kprobe(struct kprobe_ctlblk *kcb)  in restore_previous_kprobe()  argument
166 	__this_cpu_write(current_kprobe, kcb->prev_kprobe.kp);  in restore_previous_kprobe()
167 	kcb->kprobe_status = kcb->prev_kprobe.status;  in restore_previous_kprobe()
168 	kcb->kprobe_old_SR = kcb->prev_kprobe.old_SR;  in restore_previous_kprobe()
169 	kcb->kprobe_saved_SR = kcb->prev_kprobe.saved_SR;  in restore_previous_kprobe()
170 	kcb->kprobe_saved_epc = kcb->prev_kprobe.saved_epc;  in restore_previous_kprobe()
174 			       struct kprobe_ctlblk *kcb)  in set_current_kprobe()  argument
177 	kcb->kprobe_saved_SR = kcb->kprobe_old_SR = (regs->cp0_status & ST0_IE);  in set_current_kprobe()
178 	kcb->kprobe_saved_epc = regs->cp0_epc;  in set_current_kprobe()
195 					struct kprobe_ctlblk *kcb)  in evaluate_branch_instruction()  argument
206 		kcb->flags |= SKIP_DELAYSLOT;  in evaluate_branch_instruction()
208 		kcb->flags &= ~SKIP_DELAYSLOT;  in evaluate_branch_instruction()
215 		kcb->flags |= SKIP_DELAYSLOT;  in evaluate_branch_instruction()
217 	kcb->target_epc = regs->cp0_epc;  in evaluate_branch_instruction()
229 						struct kprobe_ctlblk *kcb)  in prepare_singlestep()  argument
240 		ret = evaluate_branch_instruction(p, regs, kcb);  in prepare_singlestep()
263 				       struct kprobe_ctlblk *kcb)  in resume_execution()  argument
266 		regs->cp0_epc = kcb->target_epc;  in resume_execution()
268 		unsigned long orig_epc = kcb->kprobe_saved_epc;  in resume_execution()
278 	struct kprobe_ctlblk *kcb;  in kprobe_handler()  local
287 	kcb = get_kprobe_ctlblk();  in kprobe_handler()
293 			if (kcb->kprobe_status == KPROBE_HIT_SS &&  in kprobe_handler()
296 				regs->cp0_status |= kcb->kprobe_saved_SR;  in kprobe_handler()
306 			save_previous_kprobe(kcb);  in kprobe_handler()
307 			set_current_kprobe(p, regs, kcb);  in kprobe_handler()
309 			prepare_singlestep(p, regs, kcb);  in kprobe_handler()
310 			kcb->kprobe_status = KPROBE_REENTER;  in kprobe_handler()
311 			if (kcb->flags & SKIP_DELAYSLOT) {  in kprobe_handler()
312 				resume_execution(p, regs, kcb);  in kprobe_handler()
313 				restore_previous_kprobe(kcb);  in kprobe_handler()
344 	set_current_kprobe(p, regs, kcb);  in kprobe_handler()
345 	kcb->kprobe_status = KPROBE_HIT_ACTIVE;  in kprobe_handler()
354 	prepare_singlestep(p, regs, kcb);  in kprobe_handler()
355 	if (kcb->flags & SKIP_DELAYSLOT) {  in kprobe_handler()
356 		kcb->kprobe_status = KPROBE_HIT_SSDONE;  in kprobe_handler()
359 		resume_execution(p, regs, kcb);  in kprobe_handler()
362 		kcb->kprobe_status = KPROBE_HIT_SS;  in kprobe_handler()
375 	struct kprobe_ctlblk *kcb = get_kprobe_ctlblk();  in post_kprobe_handler()  local
380 	if ((kcb->kprobe_status != KPROBE_REENTER) && cur->post_handler) {  in post_kprobe_handler()
381 		kcb->kprobe_status = KPROBE_HIT_SSDONE;  in post_kprobe_handler()
385 	resume_execution(cur, regs, kcb);  in post_kprobe_handler()
387 	regs->cp0_status |= kcb->kprobe_saved_SR;  in post_kprobe_handler()
390 	if (kcb->kprobe_status == KPROBE_REENTER) {  in post_kprobe_handler()
391 		restore_previous_kprobe(kcb);  in post_kprobe_handler()
404 	struct kprobe_ctlblk *kcb = get_kprobe_ctlblk();  in kprobe_fault_handler()  local
409 	if (kcb->kprobe_status & KPROBE_HIT_SS) {  in kprobe_fault_handler()
410 		resume_execution(cur, regs, kcb);  in kprobe_fault_handler()
411 		regs->cp0_status |= kcb->kprobe_old_SR;  in kprobe_fault_handler()