extern int linux_common_core_of_thread (ptid_t ptid);
extern LONGEST linux_common_xfer_osdata (const char *annex, gdb_byte *readbuf,
ULONGEST offset, ULONGEST len);
extern int linux_common_core_of_thread (ptid_t ptid);
extern LONGEST linux_common_xfer_osdata (const char *annex, gdb_byte *readbuf,
ULONGEST offset, ULONGEST len);