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diff --git a/gdbsupport/common-inferior.h b/gdbsupport/common-inferior.h
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+++ b/gdbsupport/common-inferior.h
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+/* Functions to deal with the inferior being executed on GDB or
+   GDBserver.
+
+   Copyright (C) 1986-2020 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/>.  */
+
+#ifndef COMMON_COMMON_INFERIOR_H
+#define COMMON_COMMON_INFERIOR_H
+
+/* Return the exec wrapper to be used when starting the inferior, or NULL
+   otherwise.  */
+extern const char *get_exec_wrapper ();
+
+/* Return the name of the executable file as a string.
+   ERR nonzero means get error if there is none specified;
+   otherwise return 0 in that case.  */
+extern const char *get_exec_file (int err);
+
+/* Return the inferior's current working directory.  If nothing has
+   been set, then return NULL.  */
+extern const char *get_inferior_cwd ();
+
+/* Set the inferior current working directory.  If CWD is NULL, unset
+   the directory.  */
+extern void set_inferior_cwd (const char *cwd);
+
+/* Whether to start up the debuggee under a shell.
+
+   If startup-with-shell is set, GDB's "run" will attempt to start up
+   the debuggee under a shell.  This also happens when using GDBserver
+   under extended remote mode.
+
+   This is in order for argument-expansion to occur.  E.g.,
+
+   (gdb) run *
+
+   The "*" gets expanded by the shell into a list of files.
+
+   While this is a nice feature, it may be handy to bypass the shell
+   in some cases.  To disable this feature, do "set startup-with-shell
+   false".
+
+   The catch-exec traps expected during start-up will be one more if
+   the target is started up with a shell.  */
+extern bool startup_with_shell;
+
+#endif /* COMMON_COMMON_INFERIOR_H */