1 files changed, 107 insertions, 0 deletions
diff --git a/elf/tst-dlmodcount.c b/elf/tst-dlmodcount.c
new file mode 100644
index 0000000000..b48ed0e2ae
--- /dev/null
+++ b/elf/tst-dlmodcount.c
@@ -0,0 +1,107 @@
+/* Copyright (C) 2004 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by David Mosberger <davidm@hpl.hp.com>, 2004.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library 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
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, write to the Free
+   Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+   02111-1307 USA.  */
+
+#include <link.h>
+#include <stdio.h>
+
+#define SET	0
+#define ADD	1
+#define REMOVE	2
+
+#define leq(l,r)	(((r) - (l)) <= ~0ULL / 2)
+
+static int
+callback (struct dl_phdr_info *info, size_t size, void *ptr)
+{
+  static int last_adds = 0, last_subs = 0;
+  intptr_t cmd = (intptr_t) ptr;
+
+  printf ("  size = %Zu\n", size);
+  if (size < (offsetof (struct dl_phdr_info, dlpi_subs)
+	      + sizeof (info->dlpi_subs)))
+    {
+      fprintf (stderr, "dl_iterate_phdr failed to pass dlpi_adds/dlpi_subs\n");
+      exit (5);
+    }
+
+  printf ("  dlpi_adds = %Lu dlpi_subs = %Lu\n",
+	  info->dlpi_adds, info->dlpi_subs);
+
+  switch (cmd)
+    {
+    case SET:
+      break;
+
+    case ADD:
+      if (leq (info->dlpi_adds, last_adds))
+	{
+	  fprintf (stderr, "dlpi_adds failed to get incremented!\n");
+	  exit (3);
+	}
+      break;
+
+    case REMOVE:
+      if (leq (info->dlpi_subs, last_subs))
+	{
+	  fprintf (stderr, "dlpi_subs failed to get incremented!\n");
+	  exit (4);
+	}
+      break;
+    }
+  last_adds = info->dlpi_adds;
+  last_subs = info->dlpi_subs;
+  return -1;
+}
+
+static void *
+load (const char *path)
+{
+  void *handle;
+
+  printf ("loading `%s'\n", path);
+  handle = dlopen (path, RTLD_LAZY);
+  if (!handle)
+    exit (1);
+  dl_iterate_phdr (callback, (void *)(intptr_t) ADD);
+  return handle;
+}
+
+static void
+unload (const char *path, void *handle)
+{
+  int ret;
+
+  printf ("unloading `%s'\n", path);
+  if (dlclose (handle) < 0)
+    exit (2);
+  dl_iterate_phdr (callback, (void *)(intptr_t) REMOVE);
+}
+
+int
+main (int argc, char **argv)
+{
+  void *handle1, *handle2;
+
+  dl_iterate_phdr (callback, (void *)(intptr_t) SET);
+  handle1 = load ("firstobj.so");
+  handle2 = load ("globalmod1.so");
+  unload ("firstobj.so", handle1);
+  unload ("globalmod1.so", handle2);
+  return 0;
+}