Move declarations of debug_threads and using_threads to header

Instead of declaring debug_threads and using_threads in several
.c files, declare them in debug.h.

gdb/gdbserver/ChangeLog:

2019-09-20  Christian Biesinger  <cbiesinger@google.com>

	* debug.c (debug_threads): Remove comment in favor of the header.
	* debug.h (using_threads): Add declaration.
	(debug_threads): Add comment.
	* linux-aarch64-low.c: Include debug.h and remove declaration of
	debug_threads.
	* nto-low.c: Likewise.
	* remote-utils.c: Likewise.
	* thread-db.c: Likewise.

7 files changed, 22 insertions, 13 deletions

diff --git a/gdb/gdbserver/ChangeLog b/gdb/gdbserver/ChangeLog
index 5c76167..c0c6f51 100644
--- a/gdb/gdbserver/ChangeLog
+++ b/gdb/gdbserver/ChangeLog
@@ -1,3 +1,14 @@
+2019-09-20  Christian Biesinger  <cbiesinger@google.com>
+
+	* debug.c (debug_threads): Remove comment in favor of the header.
+	* debug.h (using_threads): Add declaration.
+	(debug_threads): Add comment.
+	* linux-aarch64-low.c: Include debug.h and remove declaration of
+	debug_threads.
+	* nto-low.c: Likewise.
+	* remote-utils.c: Likewise.
+	* thread-db.c: Likewise.
+
 2019-09-20  Ulrich Weigand  <uweigand@de.ibm.com>
 
 	* configure.srv (ipa_ppc_linux_regobj): Remove powerpc-cell32l-ipa.o
diff --git a/gdb/gdbserver/debug.c b/gdb/gdbserver/debug.c
index 19f11fc..a764df7 100644
--- a/gdb/gdbserver/debug.c
+++ b/gdb/gdbserver/debug.c
@@ -26,8 +26,7 @@ int remote_debug = 0;
 /* Output file for debugging.  Default to standard error.  */
 FILE *debug_file = stderr;
 
-/* Enable miscellaneous debugging output.  The name is historical - it
-   was originally used to debug LinuxThreads support.  */
+/* See debug.h.  */
 int debug_threads;
 
 /* Include timestamps in debugging output.  */
diff --git a/gdb/gdbserver/debug.h b/gdb/gdbserver/debug.h
index 07e94ea..c136b9c 100644
--- a/gdb/gdbserver/debug.h
+++ b/gdb/gdbserver/debug.h
@@ -28,7 +28,13 @@ extern int remote_debug;
 void debug_set_output (const char *debug_file);
 #endif
 
+extern int using_threads;
+
+/* Enable miscellaneous debugging output.  The name is historical - it
+   was originally used to debug LinuxThreads support.  */
+
 extern int debug_threads;
+
 extern int debug_timestamp;
 
 void debug_flush (void);
diff --git a/gdb/gdbserver/linux-aarch64-low.c b/gdb/gdbserver/linux-aarch64-low.c
index 33095ea..ad04817 100644
--- a/gdb/gdbserver/linux-aarch64-low.c
+++ b/gdb/gdbserver/linux-aarch64-low.c
@@ -28,6 +28,7 @@
 #include "elf/common.h"
 #include "ax.h"
 #include "tracepoint.h"
+#include "debug.h"
 
 #include <signal.h>
 #include <sys/user.h>
@@ -153,10 +154,6 @@ aarch64_store_pauthregset (struct regcache *regcache, const void *buf)
 		   &pauth_regset[1]);
 }
 
-/* Enable miscellaneous debugging output.  The name is historical - it
-   was originally used to debug LinuxThreads support.  */
-extern int debug_threads;
-
 /* Implementation of linux_target_ops method "get_pc".  */
 
 static CORE_ADDR
diff --git a/gdb/gdbserver/nto-low.c b/gdb/gdbserver/nto-low.c
index 3c11306..d77fda5 100644
--- a/gdb/gdbserver/nto-low.c
+++ b/gdb/gdbserver/nto-low.c
@@ -22,6 +22,7 @@
 #include "gdbthread.h"
 #include "nto-low.h"
 #include "hostio.h"
+#include "debug.h"
 
 #include <limits.h>
 #include <fcntl.h>
@@ -32,7 +33,6 @@
 #include <sys/neutrino.h>
 
 
-extern int using_threads;
 int using_threads = 1;
 
 const struct target_desc *nto_tdesc;
diff --git a/gdb/gdbserver/remote-utils.c b/gdb/gdbserver/remote-utils.c
index 665fc66..d7da4b7 100644
--- a/gdb/gdbserver/remote-utils.c
+++ b/gdb/gdbserver/remote-utils.c
@@ -23,6 +23,7 @@
 #include "target.h"
 #include "gdbthread.h"
 #include "tdesc.h"
+#include "debug.h"
 #include "dll.h"
 #include "gdbsupport/rsp-low.h"
 #include "gdbsupport/netstuff.h"
@@ -109,10 +110,6 @@ static int remote_is_stdio = 0;
 static gdb_fildes_t remote_desc = INVALID_DESCRIPTOR;
 static gdb_fildes_t listen_desc = INVALID_DESCRIPTOR;
 
-/* FIXME headerize? */
-extern int using_threads;
-extern int debug_threads;
-
 #ifdef USE_WIN32API
 # define read(fd, buf, len) recv (fd, (char *) buf, len, 0)
 # define write(fd, buf, len) send (fd, (char *) buf, len, 0)
diff --git a/gdb/gdbserver/thread-db.c b/gdb/gdbserver/thread-db.c
index b2791b0..c6b43a0 100644
--- a/gdb/gdbserver/thread-db.c
+++ b/gdb/gdbserver/thread-db.c
@@ -22,8 +22,7 @@
 
 #include "linux-low.h"
 
-extern int debug_threads;
-
+#include "debug.h"
 #include "gdb_proc_service.h"
 #include "nat/gdb_thread_db.h"
 #include "gdbsupport/gdb_vecs.h"