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rsp-low.h
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1 /* Low-level RSP routines for GDB, the GNU debugger.
2
3 Copyright (C) 1988-2018 Free Software Foundation, Inc.
4
5 This file is part of GDB.
6
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 3 of the License, or
10 (at your option) any later version.
11
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
16
17 You should have received a copy of the GNU General Public License
18 along with this program. If not, see <http://www.gnu.org/licenses/>. */
19
20 #ifndef COMMON_RSP_LOW_H
21 #define COMMON_RSP_LOW_H
22
23 #include "common/byte-vector.h"
24
25 /* Convert hex digit A to a number, or throw an exception. */
26
27 extern int fromhex (int a);
28
29 /* Convert number NIB to a hex digit. */
30
31 extern int tohex (int nib);
32
33 /* Write a character representing the low order four bits of NIBBLE in
34 hex to *BUF. Returns BUF+1. */
35
36 extern char *pack_nibble (char *buf, int nibble);
37
38 /* Write the low byte of BYTE in hex to *BUF. Returns BUF+2. */
39
40 extern char *pack_hex_byte (char *pkt, int byte);
41
42 /* Read hex digits from BUFF and convert to a number, which is stored
43 in RESULT. Reads until a non-hex digit is seen. Returns a pointer
44 to the terminating character. */
45
46 extern const char *unpack_varlen_hex (const char *buff, ULONGEST *result);
47
48 /* HEX is a string of characters representing hexadecimal digits.
49 Convert pairs of hex digits to bytes and store sequentially into
50 BIN. COUNT is the maximum number of characters to convert. This
51 will convert fewer characters if the number of hex characters
52 actually seen is odd, or if HEX terminates before COUNT characters.
53 Returns the number of characters actually converted. */
54
55 extern int hex2bin (const char *hex, gdb_byte *bin, int count);
56
57 /* Like the above, but return a gdb::byte_vector. */
58
59 gdb::byte_vector hex2bin (const char *hex);
60
61 /* Like hex2bin, but return a std::string. */
62
63 extern std::string hex2str (const char *hex);
64
65 /* Convert some bytes to a hexadecimal representation. BIN holds the
66 bytes to convert. COUNT says how many bytes to convert. The
67 resulting characters are stored in HEX, followed by a NUL
68 character. Returns the number of bytes actually converted. */
69
70 extern int bin2hex (const gdb_byte *bin, char *hex, int count);
71
72 /* Overloaded version of bin2hex that returns a std::string. */
73
74 extern std::string bin2hex (const gdb_byte *bin, int count);
75
76 /* Convert BUFFER, binary data at least LEN_UNITS addressable memory units
77 long, into escaped binary data in OUT_BUF. Only copy memory units that fit
78 completely in OUT_BUF. Set *OUT_LEN_UNITS to the number of units from
79 BUFFER successfully encoded in OUT_BUF, and return the number of bytes used
80 in OUT_BUF. The total number of bytes in the output buffer will be at most
81 OUT_MAXLEN_BYTES. This function properly escapes '*', and so is suitable
82 for the server side as well as the client. */
83
84 extern int remote_escape_output (const gdb_byte *buffer, int len_units,
85 int unit_size, gdb_byte *out_buf,
86 int *out_len_units, int out_maxlen_bytes);
87
88 /* Convert BUFFER, escaped data LEN bytes long, into binary data
89 in OUT_BUF. Return the number of bytes written to OUT_BUF.
90 Raise an error if the total number of bytes exceeds OUT_MAXLEN.
91
92 This function reverses remote_escape_output. */
93
94 extern int remote_unescape_input (const gdb_byte *buffer, int len,
95 gdb_byte *out_buf, int out_maxlen);
96
97 #endif /* COMMON_RSP_LOW_H */
string
const char * string
Definition: signals.c:50
unpack_varlen_hex
const char * unpack_varlen_hex(const char *buff, ULONGEST *result)
Definition: rsp-low.c:96
hex2bin
int hex2bin(const char *hex, gdb_byte *bin, int count)
Definition: rsp-low.c:115
hex2str
std::string hex2str(const char *hex)
Definition: rsp-low.c:149
tohex
int tohex(int nib)
Definition: rsp-low.c:41
pack_nibble
char * pack_nibble(char *buf, int nibble)
Definition: rsp-low.c:77
fromhex
int fromhex(int a)
Definition: rsp-low.c:26
remote_escape_output
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)
Definition: rsp-low.c:214
byte-vector.h
bin2hex
int bin2hex(const gdb_byte *bin, char *hex, int count)
Definition: rsp-low.c:173
pack_hex_byte
char * pack_hex_byte(char *pkt, int byte)
Definition: rsp-low.c:86
gdb_byte
bfd_byte gdb_byte
Definition: common-types.h:38
buffer
Definition: buffer.h:23
gdb::byte_vector
gdb::def_vector< gdb_byte > byte_vector
Definition: byte-vector.h:58
remote_unescape_input
int remote_unescape_input(const gdb_byte *buffer, int len, gdb_byte *out_buf, int out_maxlen)
Definition: rsp-low.c:269
ULONGEST
unsigned long long ULONGEST
Definition: common-types.h:53