1 /* Target operations for the remote server for GDB.
2 Copyright (C) 2002-2015 Free Software Foundation, Inc.
4 Contributed by MontaVista Software.
6 This file is part of GDB.
8 This program is free software; you can redistribute it and/or modify
9 it under the terms of the GNU General Public License as published by
10 the Free Software Foundation; either version 3 of the License, or
11 (at your option) any later version.
13 This program is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
18 You should have received a copy of the GNU General Public License
19 along with this program. If not, see <http://www.gnu.org/licenses/>. */
22 #include "tracepoint.h"
24 struct target_ops
*the_target
;
27 set_desired_thread (int use_general
)
29 struct thread_info
*found
;
32 found
= find_thread_ptid (general_thread
);
34 found
= find_thread_ptid (cont_thread
);
37 current_thread
= get_first_thread ();
39 current_thread
= found
;
43 read_inferior_memory (CORE_ADDR memaddr
, unsigned char *myaddr
, int len
)
46 res
= (*the_target
->read_memory
) (memaddr
, myaddr
, len
);
47 check_mem_read (memaddr
, myaddr
, len
);
51 /* See target/target.h. */
54 target_read_memory (CORE_ADDR memaddr
, gdb_byte
*myaddr
, ssize_t len
)
56 return read_inferior_memory (memaddr
, myaddr
, len
);
59 /* See target/target.h. */
62 target_read_uint32 (CORE_ADDR memaddr
, uint32_t *result
)
64 return read_inferior_memory (memaddr
, (gdb_byte
*) result
, sizeof (*result
));
68 write_inferior_memory (CORE_ADDR memaddr
, const unsigned char *myaddr
,
71 /* Lacking cleanups, there is some potential for a memory leak if the
72 write fails and we go through error(). Make sure that no more than
73 one buffer is ever pending by making BUFFER static. */
74 static unsigned char *buffer
= 0;
80 buffer
= xmalloc (len
);
81 memcpy (buffer
, myaddr
, len
);
82 check_mem_write (memaddr
, buffer
, myaddr
, len
);
83 res
= (*the_target
->write_memory
) (memaddr
, buffer
, len
);
90 /* See target/target.h. */
93 target_write_memory (CORE_ADDR memaddr
, const gdb_byte
*myaddr
, ssize_t len
)
95 return write_inferior_memory (memaddr
, myaddr
, len
);
99 mywait (ptid_t ptid
, struct target_waitstatus
*ourstatus
, int options
,
107 ret
= (*the_target
->wait
) (ptid
, ourstatus
, options
);
109 /* We don't expose _LOADED events to gdbserver core. See the
110 `dlls_changed' global. */
111 if (ourstatus
->kind
== TARGET_WAITKIND_LOADED
)
112 ourstatus
->kind
= TARGET_WAITKIND_STOPPED
;
114 /* If GDB is connected through TCP/serial, then GDBserver will most
115 probably be running on its own terminal/console, so it's nice to
116 print there why is GDBserver exiting. If however, GDB is
117 connected through stdio, then there's no need to spam the GDB
118 console with this -- the user will already see the exit through
119 regular GDB output, in that same terminal. */
120 if (!remote_connection_is_stdio ())
122 if (ourstatus
->kind
== TARGET_WAITKIND_EXITED
)
124 "\nChild exited with status %d\n", ourstatus
->value
.integer
);
125 else if (ourstatus
->kind
== TARGET_WAITKIND_SIGNALLED
)
126 fprintf (stderr
, "\nChild terminated with signal = 0x%x (%s)\n",
127 gdb_signal_to_host (ourstatus
->value
.sig
),
128 gdb_signal_to_name (ourstatus
->value
.sig
));
137 /* See target/target.h. */
140 target_stop_and_wait (ptid_t ptid
)
142 struct target_waitstatus status
;
143 int was_non_stop
= non_stop
;
144 struct thread_resume resume_info
;
146 resume_info
.thread
= ptid
;
147 resume_info
.kind
= resume_stop
;
148 resume_info
.sig
= GDB_SIGNAL_0
;
149 (*the_target
->resume
) (&resume_info
, 1);
152 mywait (ptid
, &status
, 0, 0);
153 non_stop
= was_non_stop
;
156 /* See target/target.h. */
159 target_continue_no_signal (ptid_t ptid
)
161 struct thread_resume resume_info
;
163 resume_info
.thread
= ptid
;
164 resume_info
.kind
= resume_continue
;
165 resume_info
.sig
= GDB_SIGNAL_0
;
166 (*the_target
->resume
) (&resume_info
, 1);
170 start_non_stop (int nonstop
)
172 if (the_target
->start_non_stop
== NULL
)
180 return (*the_target
->start_non_stop
) (nonstop
);
184 set_target_ops (struct target_ops
*target
)
186 the_target
= (struct target_ops
*) xmalloc (sizeof (*the_target
));
187 memcpy (the_target
, target
, sizeof (*the_target
));
190 /* Convert pid to printable format. */
193 target_pid_to_str (ptid_t ptid
)
197 if (ptid_equal (ptid
, minus_one_ptid
))
198 xsnprintf (buf
, sizeof (buf
), "<all threads>");
199 else if (ptid_equal (ptid
, null_ptid
))
200 xsnprintf (buf
, sizeof (buf
), "<null thread>");
201 else if (ptid_get_tid (ptid
) != 0)
202 xsnprintf (buf
, sizeof (buf
), "Thread %d.0x%lx",
203 ptid_get_pid (ptid
), ptid_get_tid (ptid
));
204 else if (ptid_get_lwp (ptid
) != 0)
205 xsnprintf (buf
, sizeof (buf
), "LWP %d.%ld",
206 ptid_get_pid (ptid
), ptid_get_lwp (ptid
));
208 xsnprintf (buf
, sizeof (buf
), "Process %d",
209 ptid_get_pid (ptid
));
215 kill_inferior (int pid
)
217 gdb_agent_about_to_close (pid
);
219 return (*the_target
->kill
) (pid
);