Merge GDB 7.5.1

gdb/agent.c

Index: gdb/agent.c
diff --git a/gdb/agent.c b/gdb/agent.c
new file mode 100644
index 0000000000000000000000000000000000000000..a8958d78c47399f6b58c73b1f30221262d6aef33
--- /dev/null
+++ b/gdb/agent.c
@@ -0,0 +1,87 @@
+/* Copyright (C) 2012 Free Software Foundation, Inc.
+
+   This file is part of GDB.
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
+
+#include "defs.h"
+#include "command.h"
+#include "gdbcmd.h"
+#include "target.h"
+#include "agent.h"
+
+/* Enum strings for "set|show agent".  */
+
+static const char can_use_agent_on[] = "on";
+static const char can_use_agent_off[] = "off";
+static const char *can_use_agent_enum[] =
+{
+  can_use_agent_on,
+  can_use_agent_off,
+  NULL,
+};
+
+static const char *can_use_agent = can_use_agent_off;
+
+static void
+show_can_use_agent (struct ui_file *file, int from_tty,
+		    struct cmd_list_element *c, const char *value)
+{
+  fprintf_filtered (file,
+		    _("Debugger's willingness to use agent in inferior "
+		      "as a helper is %s.\n"), value);
+}
+
+static void
+set_can_use_agent (char *args, int from_tty, struct cmd_list_element *c)
+{
+  if (target_use_agent (can_use_agent == can_use_agent_on) == 0)
+    /* Something wrong during setting, set flag to default value.  */
+    can_use_agent = can_use_agent_off;
+}
+
+/* -Wmissing-prototypes */
+extern initialize_file_ftype _initialize_agent;
+
+#include "observer.h"
+#include "objfiles.h"
+
+static void
+agent_new_objfile (struct objfile *objfile)
+{
+  if (objfile == NULL || agent_loaded_p ())
+    return;
+
+  agent_look_up_symbols (objfile);
+}
+
+void
+_initialize_agent (void)
+{
+  observer_attach_new_objfile (agent_new_objfile);
+
+  add_setshow_enum_cmd ("agent", class_run,
+			can_use_agent_enum,
+			&can_use_agent, _("\
+Set debugger's willingness to use agent as a helper."), _("\
+Show debugger's willingness to use agent as a helper."), _("\
+If on, GDB will delegate some of the debugging operations to the\n\
+agent, if the target supports it.  This will speed up those\n\
+operations that are supported by the agent.\n\
+If off, GDB will not use agent, even if such is supported by the\n\
+target."),
+			set_can_use_agent,
+			show_can_use_agent,
+			&setlist, &showlist);
+}