Lines Matching refs:kcb
162 static void save_previous_kprobe(struct kprobe_ctlblk *kcb) in save_previous_kprobe() argument
164 kcb->prev_kprobe.kp = kprobe_running(); in save_previous_kprobe()
165 kcb->prev_kprobe.status = kcb->kprobe_status; in save_previous_kprobe()
166 kcb->prev_kprobe.old_SR = kcb->kprobe_old_SR; in save_previous_kprobe()
167 kcb->prev_kprobe.saved_SR = kcb->kprobe_saved_SR; in save_previous_kprobe()
168 kcb->prev_kprobe.saved_epc = kcb->kprobe_saved_epc; in save_previous_kprobe()
171 static void restore_previous_kprobe(struct kprobe_ctlblk *kcb) in restore_previous_kprobe() argument
173 __this_cpu_write(current_kprobe, kcb->prev_kprobe.kp); in restore_previous_kprobe()
174 kcb->kprobe_status = kcb->prev_kprobe.status; in restore_previous_kprobe()
175 kcb->kprobe_old_SR = kcb->prev_kprobe.old_SR; in restore_previous_kprobe()
176 kcb->kprobe_saved_SR = kcb->prev_kprobe.saved_SR; in restore_previous_kprobe()
177 kcb->kprobe_saved_epc = kcb->prev_kprobe.saved_epc; in restore_previous_kprobe()
181 struct kprobe_ctlblk *kcb) in set_current_kprobe() argument
184 kcb->kprobe_saved_SR = kcb->kprobe_old_SR = (regs->cp0_status & ST0_IE); in set_current_kprobe()
185 kcb->kprobe_saved_epc = regs->cp0_epc; in set_current_kprobe()
202 struct kprobe_ctlblk *kcb) in evaluate_branch_instruction() argument
213 kcb->flags |= SKIP_DELAYSLOT; in evaluate_branch_instruction()
215 kcb->flags &= ~SKIP_DELAYSLOT; in evaluate_branch_instruction()
222 kcb->flags |= SKIP_DELAYSLOT; in evaluate_branch_instruction()
224 kcb->target_epc = regs->cp0_epc; in evaluate_branch_instruction()
236 struct kprobe_ctlblk *kcb) in prepare_singlestep() argument
247 ret = evaluate_branch_instruction(p, regs, kcb); in prepare_singlestep()
268 struct kprobe_ctlblk *kcb) in resume_execution() argument
271 regs->cp0_epc = kcb->target_epc; in resume_execution()
273 unsigned long orig_epc = kcb->kprobe_saved_epc; in resume_execution()
284 struct kprobe_ctlblk *kcb; in kprobe_handler() local
293 kcb = get_kprobe_ctlblk(); in kprobe_handler()
299 if (kcb->kprobe_status == KPROBE_HIT_SS && in kprobe_handler()
302 regs->cp0_status |= kcb->kprobe_saved_SR; in kprobe_handler()
312 save_previous_kprobe(kcb); in kprobe_handler()
313 set_current_kprobe(p, regs, kcb); in kprobe_handler()
315 prepare_singlestep(p, regs, kcb); in kprobe_handler()
316 kcb->kprobe_status = KPROBE_REENTER; in kprobe_handler()
317 if (kcb->flags & SKIP_DELAYSLOT) { in kprobe_handler()
318 resume_execution(p, regs, kcb); in kprobe_handler()
319 restore_previous_kprobe(kcb); in kprobe_handler()
350 set_current_kprobe(p, regs, kcb); in kprobe_handler()
351 kcb->kprobe_status = KPROBE_HIT_ACTIVE; in kprobe_handler()
360 prepare_singlestep(p, regs, kcb); in kprobe_handler()
361 if (kcb->flags & SKIP_DELAYSLOT) { in kprobe_handler()
362 kcb->kprobe_status = KPROBE_HIT_SSDONE; in kprobe_handler()
365 resume_execution(p, regs, kcb); in kprobe_handler()
368 kcb->kprobe_status = KPROBE_HIT_SS; in kprobe_handler()
382 struct kprobe_ctlblk *kcb = get_kprobe_ctlblk(); in post_kprobe_handler() local
387 if ((kcb->kprobe_status != KPROBE_REENTER) && cur->post_handler) { in post_kprobe_handler()
388 kcb->kprobe_status = KPROBE_HIT_SSDONE; in post_kprobe_handler()
392 resume_execution(cur, regs, kcb); in post_kprobe_handler()
394 regs->cp0_status |= kcb->kprobe_saved_SR; in post_kprobe_handler()
397 if (kcb->kprobe_status == KPROBE_REENTER) { in post_kprobe_handler()
398 restore_previous_kprobe(kcb); in post_kprobe_handler()
411 struct kprobe_ctlblk *kcb = get_kprobe_ctlblk(); in kprobe_fault_handler() local
413 if (kcb->kprobe_status & KPROBE_HIT_SS) { in kprobe_fault_handler()
414 resume_execution(cur, regs, kcb); in kprobe_fault_handler()
415 regs->cp0_status |= kcb->kprobe_old_SR; in kprobe_fault_handler()