+ unsigned int *len_ptr, unsigned char *to);
+int decode_X_packet (char *from, int packet_len, CORE_ADDR * mem_addr_ptr,
+ unsigned int *len_ptr, unsigned char *to);
+int decode_xfer_write (char *buf, int packet_len, char **annex,
+ CORE_ADDR *offset, unsigned int *len,
+ unsigned char *data);