133 static uint8_t *read_head = NULL;  variable
748 		read_head = read_area;  in pcp_read()
756 	if (byte_cnt <= (read_tail - read_head)) {  in pcp_read()
757 		(void) memcpy(buf, read_head, byte_cnt);  in pcp_read()
758 		read_head += byte_cnt;  in pcp_read()
766 	for (i = 0; i < (read_tail - read_head); ++i) {  in pcp_read()
767 		read_area[i] = read_head[i];  in pcp_read()
769 	read_head = read_area;  in pcp_read()
770 	read_tail = read_head + i;  in pcp_read()
792 		m = byte_cnt - (read_tail - read_head);  in pcp_read()
803 	n = MIN(byte_cnt, (read_tail - read_head));  in pcp_read()
804 	(void) memcpy(buf, read_head, n);  in pcp_read()
806 	read_head += n;  in pcp_read()
836 		read_head = read_area;  in pcp_update_read_area()
844 	if (byte_cnt <= (read_tail - read_head)) {  in pcp_update_read_area()
852 	for (i = 0; i < (read_tail - read_head); ++i) {  in pcp_update_read_area()
853 		read_area[i] = read_head[i];  in pcp_update_read_area()
855 	read_head = read_area;  in pcp_update_read_area()
856 	read_tail = read_head + i;  in pcp_update_read_area()
858 	n = byte_cnt - (read_tail - read_head);  in pcp_update_read_area()
869 	n = MIN(byte_cnt, (read_tail - read_head));  in pcp_update_read_area()
907 	if (byte_cnt <= (read_tail - read_head)) {  in pcp_peek_read()
908 		(void) memcpy(buf, read_head, byte_cnt);  in pcp_peek_read()
917 	for (i = 0; i < (read_tail - read_head); ++i) {  in pcp_peek_read()
918 		peek_read_area[i] = read_head[i];  in pcp_peek_read()
1223 		while ((read_tail - read_head) < sizeof (host_magic_num)) {  in pcp_vldc_frame_error_handle()
1232 		if (memcmp(read_head, magic_num_buf,  in pcp_vldc_frame_error_handle()
1234 			read_head += 1;  in pcp_vldc_frame_error_handle()