62 static int step_user_frame(struct stack_frame* frame) {  in step_user_frame()  argument
64     int rc = copy_from_user(&uframe, frame->fp, sizeof(uframe));  in step_user_frame()
69     frame->frame_addr = frame->fp;  in step_user_frame()
70     frame->fp = uframe.fp;  in step_user_frame()
71     frame->ret_addr = uframe.lr;  in step_user_frame()
72     if (is_zero_frame(frame)) {  in step_user_frame()
78 static int step_kernel_frame(struct stack_frame* frame, bool current_frame) {  in step_kernel_frame()  argument
80     void* frame_addr = current_frame ? __GET_FRAME() : (void*)(frame->fp);  in step_kernel_frame()
83     frame->frame_addr = (uintptr_t)frame_addr;  in step_kernel_frame()
84     frame->fp = kframe.fp;  in step_kernel_frame()
85     frame->ret_addr = kframe.lr;  in step_kernel_frame()
86     if (is_zero_frame(frame)) {  in step_kernel_frame()
92 int step_frame(struct stack_frame* frame, bool user) {  in step_frame()  argument
94         return step_user_frame(frame);  in step_frame()
96         return step_kernel_frame(frame, false);  in step_frame()
100 void get_current_frame(struct stack_frame* frame) {  in get_current_frame()  argument
101     step_kernel_frame(frame, true);  in get_current_frame()