Commit | Line | Data |
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ce3a066d | 1 | /* Target operations for the remote server for GDB. |
32d0add0 | 2 | Copyright (C) 2002-2015 Free Software Foundation, Inc. |
ce3a066d DJ |
3 | |
4 | Contributed by MontaVista Software. | |
5 | ||
6 | This file is part of GDB. | |
7 | ||
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 | |
a9762ec7 | 10 | the Free Software Foundation; either version 3 of the License, or |
ce3a066d DJ |
11 | (at your option) any later version. |
12 | ||
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. | |
17 | ||
18 | You should have received a copy of the GNU General Public License | |
a9762ec7 | 19 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
ce3a066d DJ |
20 | |
21 | #include "server.h" | |
c144c7a0 | 22 | #include "tracepoint.h" |
ce3a066d DJ |
23 | |
24 | struct target_ops *the_target; | |
25 | ||
f0db101d | 26 | int |
0bfdf32f | 27 | set_desired_thread (int use_general) |
0d62e5e8 DJ |
28 | { |
29 | struct thread_info *found; | |
30 | ||
31 | if (use_general == 1) | |
e09875d4 | 32 | found = find_thread_ptid (general_thread); |
0d62e5e8 | 33 | else |
943ca1dd | 34 | found = find_thread_ptid (cont_thread); |
0d62e5e8 | 35 | |
f0db101d PA |
36 | current_thread = found; |
37 | return (current_thread != NULL); | |
0d62e5e8 DJ |
38 | } |
39 | ||
c3e735a6 | 40 | int |
f450004a | 41 | read_inferior_memory (CORE_ADDR memaddr, unsigned char *myaddr, int len) |
611cb4a5 | 42 | { |
c3e735a6 DJ |
43 | int res; |
44 | res = (*the_target->read_memory) (memaddr, myaddr, len); | |
611cb4a5 | 45 | check_mem_read (memaddr, myaddr, len); |
c3e735a6 | 46 | return res; |
611cb4a5 DJ |
47 | } |
48 | ||
721ec300 GB |
49 | /* See target/target.h. */ |
50 | ||
51 | int | |
52 | target_read_memory (CORE_ADDR memaddr, gdb_byte *myaddr, ssize_t len) | |
53 | { | |
54 | return read_inferior_memory (memaddr, myaddr, len); | |
55 | } | |
56 | ||
57 | /* See target/target.h. */ | |
58 | ||
59 | int | |
60 | target_read_uint32 (CORE_ADDR memaddr, uint32_t *result) | |
61 | { | |
62 | return read_inferior_memory (memaddr, (gdb_byte *) result, sizeof (*result)); | |
63 | } | |
64 | ||
611cb4a5 | 65 | int |
f450004a DJ |
66 | write_inferior_memory (CORE_ADDR memaddr, const unsigned char *myaddr, |
67 | int len) | |
0d62e5e8 DJ |
68 | { |
69 | /* Lacking cleanups, there is some potential for a memory leak if the | |
70 | write fails and we go through error(). Make sure that no more than | |
71 | one buffer is ever pending by making BUFFER static. */ | |
f450004a | 72 | static unsigned char *buffer = 0; |
0d62e5e8 DJ |
73 | int res; |
74 | ||
75 | if (buffer != NULL) | |
76 | free (buffer); | |
77 | ||
bca929d3 | 78 | buffer = xmalloc (len); |
0d62e5e8 | 79 | memcpy (buffer, myaddr, len); |
b9fd1791 | 80 | check_mem_write (memaddr, buffer, myaddr, len); |
0d62e5e8 DJ |
81 | res = (*the_target->write_memory) (memaddr, buffer, len); |
82 | free (buffer); | |
83 | buffer = NULL; | |
84 | ||
85 | return res; | |
86 | } | |
87 | ||
721ec300 GB |
88 | /* See target/target.h. */ |
89 | ||
90 | int | |
91 | target_write_memory (CORE_ADDR memaddr, const gdb_byte *myaddr, ssize_t len) | |
92 | { | |
93 | return write_inferior_memory (memaddr, myaddr, len); | |
94 | } | |
95 | ||
95954743 PA |
96 | ptid_t |
97 | mywait (ptid_t ptid, struct target_waitstatus *ourstatus, int options, | |
bd99dc85 | 98 | int connected_wait) |
611cb4a5 | 99 | { |
95954743 | 100 | ptid_t ret; |
0d62e5e8 DJ |
101 | |
102 | if (connected_wait) | |
103 | server_waiting = 1; | |
104 | ||
95954743 | 105 | ret = (*the_target->wait) (ptid, ourstatus, options); |
bd99dc85 | 106 | |
4210d83e PA |
107 | /* We don't expose _LOADED events to gdbserver core. See the |
108 | `dlls_changed' global. */ | |
109 | if (ourstatus->kind == TARGET_WAITKIND_LOADED) | |
110 | ourstatus->kind = TARGET_WAITKIND_STOPPED; | |
111 | ||
1a3d890b PA |
112 | /* If GDB is connected through TCP/serial, then GDBserver will most |
113 | probably be running on its own terminal/console, so it's nice to | |
114 | print there why is GDBserver exiting. If however, GDB is | |
115 | connected through stdio, then there's no need to spam the GDB | |
116 | console with this -- the user will already see the exit through | |
117 | regular GDB output, in that same terminal. */ | |
118 | if (!remote_connection_is_stdio ()) | |
119 | { | |
120 | if (ourstatus->kind == TARGET_WAITKIND_EXITED) | |
121 | fprintf (stderr, | |
122 | "\nChild exited with status %d\n", ourstatus->value.integer); | |
123 | else if (ourstatus->kind == TARGET_WAITKIND_SIGNALLED) | |
124 | fprintf (stderr, "\nChild terminated with signal = 0x%x (%s)\n", | |
125 | gdb_signal_to_host (ourstatus->value.sig), | |
126 | gdb_signal_to_name (ourstatus->value.sig)); | |
127 | } | |
0d62e5e8 DJ |
128 | |
129 | if (connected_wait) | |
130 | server_waiting = 0; | |
131 | ||
132 | return ret; | |
611cb4a5 DJ |
133 | } |
134 | ||
f8c1d06b GB |
135 | /* See target/target.h. */ |
136 | ||
137 | void | |
03f4463b | 138 | target_stop_and_wait (ptid_t ptid) |
f8c1d06b GB |
139 | { |
140 | struct target_waitstatus status; | |
141 | int was_non_stop = non_stop; | |
142 | struct thread_resume resume_info; | |
143 | ||
144 | resume_info.thread = ptid; | |
145 | resume_info.kind = resume_stop; | |
146 | resume_info.sig = GDB_SIGNAL_0; | |
147 | (*the_target->resume) (&resume_info, 1); | |
148 | ||
149 | non_stop = 1; | |
150 | mywait (ptid, &status, 0, 0); | |
151 | non_stop = was_non_stop; | |
152 | } | |
153 | ||
154 | /* See target/target.h. */ | |
155 | ||
156 | void | |
03f4463b | 157 | target_continue_no_signal (ptid_t ptid) |
f8c1d06b GB |
158 | { |
159 | struct thread_resume resume_info; | |
160 | ||
161 | resume_info.thread = ptid; | |
162 | resume_info.kind = resume_continue; | |
163 | resume_info.sig = GDB_SIGNAL_0; | |
164 | (*the_target->resume) (&resume_info, 1); | |
165 | } | |
166 | ||
bd99dc85 PA |
167 | int |
168 | start_non_stop (int nonstop) | |
169 | { | |
170 | if (the_target->start_non_stop == NULL) | |
171 | { | |
172 | if (nonstop) | |
173 | return -1; | |
174 | else | |
175 | return 0; | |
176 | } | |
177 | ||
178 | return (*the_target->start_non_stop) (nonstop); | |
179 | } | |
180 | ||
ce3a066d DJ |
181 | void |
182 | set_target_ops (struct target_ops *target) | |
183 | { | |
8d749320 | 184 | the_target = XNEW (struct target_ops); |
ce3a066d DJ |
185 | memcpy (the_target, target, sizeof (*the_target)); |
186 | } | |
95954743 PA |
187 | |
188 | /* Convert pid to printable format. */ | |
189 | ||
190 | const char * | |
191 | target_pid_to_str (ptid_t ptid) | |
192 | { | |
193 | static char buf[80]; | |
194 | ||
195 | if (ptid_equal (ptid, minus_one_ptid)) | |
6cebaf6e | 196 | xsnprintf (buf, sizeof (buf), "<all threads>"); |
95954743 | 197 | else if (ptid_equal (ptid, null_ptid)) |
6cebaf6e | 198 | xsnprintf (buf, sizeof (buf), "<null thread>"); |
95954743 | 199 | else if (ptid_get_tid (ptid) != 0) |
6cebaf6e | 200 | xsnprintf (buf, sizeof (buf), "Thread %d.0x%lx", |
201 | ptid_get_pid (ptid), ptid_get_tid (ptid)); | |
95954743 | 202 | else if (ptid_get_lwp (ptid) != 0) |
6cebaf6e | 203 | xsnprintf (buf, sizeof (buf), "LWP %d.%ld", |
204 | ptid_get_pid (ptid), ptid_get_lwp (ptid)); | |
95954743 | 205 | else |
6cebaf6e | 206 | xsnprintf (buf, sizeof (buf), "Process %d", |
207 | ptid_get_pid (ptid)); | |
95954743 PA |
208 | |
209 | return buf; | |
210 | } | |
8336d594 | 211 | |
7255706c YQ |
212 | int |
213 | kill_inferior (int pid) | |
214 | { | |
215 | gdb_agent_about_to_close (pid); | |
216 | ||
217 | return (*the_target->kill) (pid); | |
218 | } | |
70b90b91 YQ |
219 | |
220 | /* Target can do hardware single step. */ | |
221 | ||
222 | int | |
223 | target_can_do_hardware_single_step (void) | |
224 | { | |
225 | return 1; | |
226 | } |