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"
23 #include "target/target-utils.h"
26 struct target_ops
*the_target
;
29 set_desired_thread (int use_general
)
31 struct thread_info
*found
;
34 found
= find_thread_ptid (general_thread
);
36 found
= find_thread_ptid (cont_thread
);
39 current_thread
= get_first_thread ();
41 current_thread
= found
;
45 read_inferior_memory (CORE_ADDR memaddr
, unsigned char *myaddr
, int len
)
48 res
= (*the_target
->read_memory
) (memaddr
, myaddr
, len
);
49 check_mem_read (memaddr
, myaddr
, len
);
53 /* See target/target.h. */
56 target_read_memory (CORE_ADDR memaddr
, gdb_byte
*myaddr
, ssize_t len
)
58 return read_inferior_memory (memaddr
, myaddr
, len
);
61 /* See target/target.h. */
64 target_read_uint32 (CORE_ADDR memaddr
, uint32_t *result
)
66 return read_inferior_memory (memaddr
, (gdb_byte
*) result
, sizeof (*result
));
70 write_inferior_memory (CORE_ADDR memaddr
, const unsigned char *myaddr
,
73 /* Lacking cleanups, there is some potential for a memory leak if the
74 write fails and we go through error(). Make sure that no more than
75 one buffer is ever pending by making BUFFER static. */
76 static unsigned char *buffer
= 0;
82 buffer
= xmalloc (len
);
83 memcpy (buffer
, myaddr
, len
);
84 check_mem_write (memaddr
, buffer
, myaddr
, len
);
85 res
= (*the_target
->write_memory
) (memaddr
, buffer
, len
);
92 /* See target/target.h. */
95 target_write_memory (CORE_ADDR memaddr
, const gdb_byte
*myaddr
, ssize_t len
)
97 return write_inferior_memory (memaddr
, myaddr
, len
);
101 mywait (ptid_t ptid
, struct target_waitstatus
*ourstatus
, int options
,
109 ret
= (*the_target
->wait
) (ptid
, ourstatus
, options
);
111 /* We don't expose _LOADED events to gdbserver core. See the
112 `dlls_changed' global. */
113 if (ourstatus
->kind
== TARGET_WAITKIND_LOADED
)
114 ourstatus
->kind
= TARGET_WAITKIND_STOPPED
;
116 /* If GDB is connected through TCP/serial, then GDBserver will most
117 probably be running on its own terminal/console, so it's nice to
118 print there why is GDBserver exiting. If however, GDB is
119 connected through stdio, then there's no need to spam the GDB
120 console with this -- the user will already see the exit through
121 regular GDB output, in that same terminal. */
122 if (!remote_connection_is_stdio ())
124 if (ourstatus
->kind
== TARGET_WAITKIND_EXITED
)
126 "\nChild exited with status %d\n", ourstatus
->value
.integer
);
127 else if (ourstatus
->kind
== TARGET_WAITKIND_SIGNALLED
)
128 fprintf (stderr
, "\nChild terminated with signal = 0x%x (%s)\n",
129 gdb_signal_to_host (ourstatus
->value
.sig
),
130 gdb_signal_to_name (ourstatus
->value
.sig
));
139 /* See target/target.h. */
142 target_stop_and_wait (ptid_t ptid
)
144 struct target_waitstatus status
;
145 int was_non_stop
= non_stop
;
146 struct thread_resume resume_info
;
148 resume_info
.thread
= ptid
;
149 resume_info
.kind
= resume_stop
;
150 resume_info
.sig
= GDB_SIGNAL_0
;
151 (*the_target
->resume
) (&resume_info
, 1);
154 mywait (ptid
, &status
, 0, 0);
155 non_stop
= was_non_stop
;
158 /* See target/target.h. */
161 target_continue_no_signal (ptid_t ptid
)
163 struct thread_resume resume_info
;
165 resume_info
.thread
= ptid
;
166 resume_info
.kind
= resume_continue
;
167 resume_info
.sig
= GDB_SIGNAL_0
;
168 (*the_target
->resume
) (&resume_info
, 1);
172 start_non_stop (int nonstop
)
174 if (the_target
->start_non_stop
== NULL
)
182 return (*the_target
->start_non_stop
) (nonstop
);
186 set_target_ops (struct target_ops
*target
)
188 the_target
= (struct target_ops
*) xmalloc (sizeof (*the_target
));
189 memcpy (the_target
, target
, sizeof (*the_target
));
192 /* Convert pid to printable format. */
195 target_pid_to_str (ptid_t ptid
)
199 if (ptid_equal (ptid
, minus_one_ptid
))
200 xsnprintf (buf
, sizeof (buf
), "<all threads>");
201 else if (ptid_equal (ptid
, null_ptid
))
202 xsnprintf (buf
, sizeof (buf
), "<null thread>");
203 else if (ptid_get_tid (ptid
) != 0)
204 xsnprintf (buf
, sizeof (buf
), "Thread %d.0x%lx",
205 ptid_get_pid (ptid
), ptid_get_tid (ptid
));
206 else if (ptid_get_lwp (ptid
) != 0)
207 xsnprintf (buf
, sizeof (buf
), "LWP %d.%ld",
208 ptid_get_pid (ptid
), ptid_get_lwp (ptid
));
210 xsnprintf (buf
, sizeof (buf
), "Process %d",
211 ptid_get_pid (ptid
));
217 kill_inferior (int pid
)
219 gdb_agent_about_to_close (pid
);
221 return (*the_target
->kill
) (pid
);
225 target_fileio_read_stralloc_1_pread (int handle
, gdb_byte
*read_buf
, int len
,
226 ULONGEST offset
, int *target_errno
)
228 int retval
= pread (handle
, read_buf
, len
, offset
);
230 *target_errno
= errno
;
235 target_fileio_read_stralloc_1 (struct inferior
*inf
, const char *filename
,
236 gdb_byte
**buf_p
, int padding
)
241 fd
= open (filename
, O_RDONLY
);
245 retval
= read_alloc (buf_p
, fd
, target_fileio_read_stralloc_1_pread
, padding
);
253 target_fileio_read_stralloc (struct inferior
*inf
, const char *filename
)
255 return read_stralloc (inf
, filename
, target_fileio_read_stralloc_1
);