gprofng: a new GNU profiler

top-level
	* Makefile.def: Add gprofng module.
	* configure.ac: Add --enable-gprofng option.
	* src-release.sh: Add gprofng.
	* Makefile.in: Regenerate.
	* configure: Regenerate.
	* gprofng: New directory.

binutils
	* MAINTAINERS: Add gprofng maintainer.
	* README-how-to-make-a-release: Add gprofng.

include.
	* collectorAPI.h: New file.
	* libcollector.h: New file.
	* libfcollector.h: New file.

gprofng/testsuite/gprofng.display/synprog/so_syn.c

@@ -0,0 +1,69 @@
+/* Copyright (C) 2021 Free Software Foundation, Inc.
+   Contributed by Oracle.
+
+   This file is part of GNU Binutils.
+
+   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, 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, write to the Free Software
+   Foundation, 51 Franklin Street - Fifth Floor, Boston,
+   MA 02110-1301, USA.  */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include "stopwatch.h"
+
+static void so_burncpu ();
+
+int
+so_cputime ()
+{
+  wlog ("start of so_cputime", NULL);
+
+  /* put a memory leak in here */
+  (void) malloc (13);
+
+  fprintf (stderr, "so_burncpu @ 0x%08x\n", (unsigned int) so_burncpu);
+  so_burncpu ();
+
+  wlog ("end of so_cputime", NULL);
+  return 13;
+}
+
+void so_init () __attribute__ ((constructor));
+
+void
+so_init ()
+{
+  fprintf (stderr, "so_init executed\n");
+}
+
+/*	so_burncpu - loop to use a bunch of user time */
+void
+so_burncpu ()
+{
+  hrtime_t start = gethrtime ();
+  hrtime_t vstart = gethrvtime ();
+  volatile float x = 0.;     /* temp variable for f.p. calculation */
+  long long count = 0;
+  do
+    {
+      x = 0.0;
+      for (int j = 0; j < 100000; j++)
+        x = x + 1.0;
+      count++;
+    }
+  while (start + testtime * 1e9 > gethrtime ());
+
+  fprintf (stderr, "   Performed %lld while-loop iterations\n", count);
+  whrvlog (gethrtime () - start, gethrvtime () - vstart, "so_burncpu", NULL);
+}