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/* Low-level RSP routines for GDB, the GNU debugger.
Copyright (C) 1988-2023 Free Software Foundation, Inc.
This file is part of GDB.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>. */
#ifndef COMMON_RSP_LOW_H
#define COMMON_RSP_LOW_H
/* Convert number NIB to a hex digit. */
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 const char *unpack_varlen_hex (const char *buff, ULONGEST *result);
/* Like hex2bin, but return a std::string. */
extern std::string hex2str (const char *hex);
/* Like hex2bin, but return a std::string. */
extern std::string hex2str (const char *hex, 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);
/* Overloaded version of bin2hex that returns a std::string. */
extern std::string bin2hex (const gdb_byte *bin, int count);
/* Convert BUFFER, binary data at least LEN_UNITS addressable memory units
long, into escaped binary data in OUT_BUF. Only copy memory units that fit
completely in OUT_BUF. Set *OUT_LEN_UNITS to the number of units from
BUFFER successfully encoded in OUT_BUF, and return the number of bytes used
in OUT_BUF. The total number of bytes in the output buffer will be at most
OUT_MAXLEN_BYTES. This function properly escapes '*', and so is suitable
for the server side as well as the client. */
extern int remote_escape_output (const gdb_byte *buffer, int len_units,
int unit_size, gdb_byte *out_buf,
int *out_len_units, int out_maxlen_bytes);
/* Convert BUFFER, escaped data LEN bytes long, into binary data
in OUT_BUF. Return the number of bytes written to OUT_BUF.
Raise an error if the total number of bytes exceeds OUT_MAXLEN.
This function reverses remote_escape_output. */
extern int remote_unescape_input (const gdb_byte *buffer, int len,
gdb_byte *out_buf, int out_maxlen);
#endif /* COMMON_RSP_LOW_H */
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