gdb/remote.h

   1 /* Remote target communications for serial-line targets in custom GDB protocol
   2    Copyright (C) 1999-2023 Free Software Foundation, Inc.
   3
   4    This file is part of GDB.
   5
   6    This program is free software; you can redistribute it and/or modify
   7    it under the terms of the GNU General Public License as published by
   8    the Free Software Foundation; either version 3 of the License, or
   9    (at your option) any later version.
  10
  11    This program is distributed in the hope that it will be useful,
  12    but WITHOUT ANY WARRANTY; without even the implied warranty of
  13    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14    GNU General Public License for more details.
  15
  16    You should have received a copy of the GNU General Public License
  17    along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
  18
  19 #ifndef REMOTE_H
  20 #define REMOTE_H
  21
  22 #include "remote-notif.h"
  23
  24 struct target_desc;
  25 struct remote_target;
  26
  27 class process_stratum_target;
  28
  29 /* True when printing "remote" debug statements is enabled.  */
  30
  31 extern bool remote_debug;
  32
  33 /* Print a "remote" debug statement.  */
  34
  35 #define remote_debug_printf(fmt, ...) \
  36   debug_prefixed_printf_cond (remote_debug, "remote", fmt, ##__VA_ARGS__)
  37
  38 /* Same as the above, but don't include the function name.  */
  39
  40 #define remote_debug_printf_nofunc(fmt, ...) \
  41                 debug_prefixed_printf_cond_nofunc (remote_debug, "remote", \
  42                                                    fmt, ##__VA_ARGS__)
  43
  44 /* Print "remote" enter/exit debug statements.  */
  45
  46 #define REMOTE_SCOPED_DEBUG_ENTER_EXIT \
  47   scoped_debug_enter_exit (remote_debug, "remote")
  48
  49 /* Read a packet from the remote machine, with error checking, and
  50    store it in *BUF.  Resize *BUF using xrealloc if necessary to hold
  51    the result, and update *SIZEOF_BUF.  If FOREVER, wait forever
  52    rather than timing out; this is used (in synchronous mode) to wait
  53    for a target that is is executing user code to stop.  */
  54
  55 extern void getpkt (remote_target *remote,
  56                     char **buf, long *sizeof_buf, int forever);
  57
  58 /* Send a packet to the remote machine, with error checking.  The data
  59    of the packet is in BUF.  The string in BUF can be at most PBUFSIZ
  60    - 5 to account for the $, # and checksum, and for a possible /0 if
  61    we are debugging (remote_debug) and want to print the sent packet
  62    as a string.  */
  63
  64 extern int putpkt (remote_target *remote, const char *buf);
  65
  66 void register_remote_g_packet_guess (struct gdbarch *gdbarch, int bytes,
  67                                      const struct target_desc *tdesc);
  68 void register_remote_support_xml (const char *);
  69
  70 void remote_file_put (const char *local_file, const char *remote_file,
  71                       int from_tty);
  72 void remote_file_get (const char *remote_file, const char *local_file,
  73                       int from_tty);
  74 void remote_file_delete (const char *remote_file, int from_tty);
  75
  76 extern int remote_register_number_and_offset (struct gdbarch *gdbarch,
  77                                               int regnum, int *pnum,
  78                                               int *poffset);
  79
  80 extern void remote_notif_get_pending_events (remote_target *remote,
  81                                              const notif_client *np);
  82 extern bool remote_target_is_non_stop_p (remote_target *t);
  83
  84 /* An abstract class that represents the set of callbacks that are made
  85    from the send_remote_packet function (declared below).  */
  86
  87 struct send_remote_packet_callbacks
  88 {
  89   /* The SENDING callback is called once send_remote_packet has performed
  90      its error checking and setup, just before the packet is sent to the
  91      remote target.  BUF is the content of the packet that will be sent
  92      (before any of the protocol specific prefix, suffix, or escaping is
  93      applied).  */
  94
  95   virtual void sending (gdb::array_view<const char> &buf) = 0;
  96
  97   /* The RECEIVED callback is called once a reply has been received from
  98      the remote target.  The content of the reply is in BUF which can't be
  99      modified, and which is not guaranteed to remain valid after the
 100      RECEIVED call has returned.  If you need to preserve the contents of
 101      BUF then a copy should be taken.  */
 102
 103   virtual void received (gdb::array_view<const char> &buf) = 0;
 104 };
 105
 106 /* Send BUF to the current remote target.  If BUF points to an empty
 107    string, either zero length, or the first character is the null
 108    character, then an error is thrown.  If the current target is not a
 109    remote target then an error is thrown.
 110
 111    Calls CALLBACKS->sending() just before the packet is sent to the remote
 112    target, and calls CALLBACKS->received() with the reply once this is
 113    received from the remote target.  */
 114
 115 extern void send_remote_packet (gdb::array_view<const char> &buf,
 116                                 send_remote_packet_callbacks *callbacks);
 117
 118
 119 /* Return true if TARGET is a remote, or extended-remote target, otherwise,
 120    return false.  */
 121
 122 extern bool is_remote_target (process_stratum_target *target);
 123
 124 #endif