85 static void save_previous_kprobe(struct kprobe_ctlblk *kcb)  in save_previous_kprobe()  argument
87 	kcb->prev_kprobe.kp = kprobe_running();  in save_previous_kprobe()
88 	kcb->prev_kprobe.status = kcb->kprobe_status;  in save_previous_kprobe()
92 static void restore_previous_kprobe(struct kprobe_ctlblk *kcb)  in restore_previous_kprobe()  argument
94 	__this_cpu_write(current_kprobe, kcb->prev_kprobe.kp);  in restore_previous_kprobe()
95 	kcb->kprobe_status = kcb->prev_kprobe.status;  in restore_previous_kprobe()
113 static void save_local_irqflag(struct kprobe_ctlblk *kcb,  in save_local_irqflag()  argument
116 	kcb->saved_status = regs->csr_prmd;  in save_local_irqflag()
121 static void restore_local_irqflag(struct kprobe_ctlblk *kcb,  in restore_local_irqflag()  argument
124 	regs->csr_prmd = kcb->saved_status;  in restore_local_irqflag()
128 static void post_kprobe_handler(struct kprobe *cur, struct kprobe_ctlblk *kcb,  in post_kprobe_handler()  argument
136 	if (kcb->kprobe_status == KPROBE_REENTER) {  in post_kprobe_handler()
137 		restore_previous_kprobe(kcb);  in post_kprobe_handler()
146 	kcb->kprobe_status = KPROBE_HIT_SSDONE;  in post_kprobe_handler()
156 			     struct kprobe_ctlblk *kcb, int reenter)  in setup_singlestep()  argument
161 		save_previous_kprobe(kcb);  in setup_singlestep()
163 		kcb->kprobe_status = KPROBE_REENTER;  in setup_singlestep()
165 		kcb->kprobe_status = KPROBE_HIT_SS;  in setup_singlestep()
170 		save_local_irqflag(kcb, regs);  in setup_singlestep()
178 		post_kprobe_handler(p, kcb, regs);  in setup_singlestep()
184 			   struct kprobe_ctlblk *kcb)  in reenter_kprobe()  argument
186 	switch (kcb->kprobe_status) {  in reenter_kprobe()
191 		setup_singlestep(p, regs, kcb, 1);  in reenter_kprobe()
209 	struct kprobe_ctlblk *kcb;  in kprobe_breakpoint_handler()  local
218 	kcb = get_kprobe_ctlblk();  in kprobe_breakpoint_handler()
224 			if (reenter_kprobe(p, regs, kcb))  in kprobe_breakpoint_handler()
229 			kcb->kprobe_status = KPROBE_HIT_ACTIVE;  in kprobe_breakpoint_handler()
242 				setup_singlestep(p, regs, kcb, 0);  in kprobe_breakpoint_handler()
273 	struct kprobe_ctlblk *kcb = get_kprobe_ctlblk();  in kprobe_singlestep_handler()  local
276 	if (cur && (kcb->kprobe_status & (KPROBE_HIT_SS | KPROBE_REENTER)) &&  in kprobe_singlestep_handler()
278 		restore_local_irqflag(kcb, regs);  in kprobe_singlestep_handler()
279 		post_kprobe_handler(cur, kcb, regs);  in kprobe_singlestep_handler()
291 	struct kprobe_ctlblk *kcb = get_kprobe_ctlblk();  in kprobe_fault_handler()  local
293 	switch (kcb->kprobe_status) {  in kprobe_fault_handler()
306 		if (kcb->kprobe_status == KPROBE_REENTER) {  in kprobe_fault_handler()
307 			restore_previous_kprobe(kcb);  in kprobe_fault_handler()
309 			restore_local_irqflag(kcb, regs);  in kprobe_fault_handler()