extern int tohex (int nib);
+/* Write a character representing the low order four bits of NIBBLE in
+ hex to *BUF. Returns BUF+1. */
+
extern char *pack_nibble (char *buf, int nibble);
+/* Write the low byte of BYTE in hex to *BUF. Returns BUF+2. */
+
extern char *pack_hex_byte (char *pkt, int byte);
+/* Read hex digits from BUFF and convert to a number, which is stored
+ in RESULT. Reads until a non-hex digit is seen. Returns a pointer
+ to the terminating character. */
+
extern char *unpack_varlen_hex (char *buff, ULONGEST *result);
+/* HEX is a string of characters representing hexadecimal digits.
+ Convert pairs of hex digits to bytes and store sequentially into
+ BIN. COUNT is the maximum number of characters to convert. This
+ will convert fewer characters if the number of hex characters
+ actually seen is odd, or if HEX terminates before COUNT characters.
+ Returns the number of characters actually converted. */
+
extern int hex2bin (const char *hex, gdb_byte *bin, int count);
+/* Convert some bytes to a hexadecimal representation. BIN holds the
+ bytes to convert. COUNT says how many bytes to convert. The
+ resulting characters are stored in HEX, followed by a NUL
+ character. Returns the number of bytes actually converted. */
+
extern int bin2hex (const gdb_byte *bin, char *hex, int count);
/* Convert BUFFER, binary data at least LEN bytes long, into escaped