1 files changed, 150 insertions, 0 deletions
diff --git a/libsigsegv/tests/sigsegv2.c b/libsigsegv/tests/sigsegv2.c
new file mode 100644
index 00000000..39961a6a
--- /dev/null
+++ b/libsigsegv/tests/sigsegv2.c
@@ -0,0 +1,150 @@
+/* Test the dispatcher.
+   Copyright (C) 2002-2006, 2008  Bruno Haible <bruno@clisp.org>
+
+   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 2, 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,
+   Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.  */
+
+#ifndef _MSC_VER
+# include <config.h>
+#endif
+
+#include "sigsegv.h"
+#include <stdio.h>
+
+#if HAVE_SIGSEGV_RECOVERY
+
+#include "mmaputil.h"
+#include <stdlib.h>
+
+static sigsegv_dispatcher dispatcher;
+
+static volatile unsigned int logcount = 0;
+static volatile unsigned long logdata[10];
+
+static int
+area_handler (void *fault_address, void *user_arg)
+{
+  unsigned long area = *(unsigned long *)user_arg;
+  logdata[logcount++] = area;
+  if (logcount >= sizeof (logdata) / sizeof (logdata[0]))
+    abort ();
+  if (!((unsigned long)fault_address >= area
+        && (unsigned long)fault_address - area < 0x4000))
+    abort ();
+  if (mprotect ((void *) area, 0x4000, PROT_READ_WRITE) == 0)
+    return 1;
+  return 0;
+}
+
+static int
+handler (void *fault_address, int serious)
+{
+  return sigsegv_dispatch (&dispatcher, fault_address);
+}
+
+static void
+barrier ()
+{
+}
+
+int
+main ()
+{
+  void *p;
+  unsigned long area1;
+  unsigned long area2;
+  unsigned long area3;
+
+  /* Preparations.  */
+#if !HAVE_MMAP_ANON && !HAVE_MMAP_ANONYMOUS && HAVE_MMAP_DEVZERO
+  zero_fd = open ("/dev/zero", O_RDONLY, 0644);
+#endif
+  sigsegv_init (&dispatcher);
+  sigsegv_install_handler (&handler);
+
+  /* Setup some mmaped memory.  */
+
+  p = mmap_zeromap ((void *) 0x12340000, 0x4000);
+  if (p == (void *)(-1))
+    {
+      fprintf (stderr, "mmap_zeromap failed.\n");
+      exit (2);
+    }
+  area1 = (unsigned long) p;
+  sigsegv_register (&dispatcher, (void *) area1, 0x4000, &area_handler, &area1);
+  if (mprotect ((void *) area1, 0x4000, PROT_NONE) < 0)
+    {
+      fprintf (stderr, "mprotect failed.\n");
+      exit (2);
+    }
+
+  p = mmap_zeromap ((void *) 0x0BEE0000, 0x4000);
+  if (p == (void *)(-1))
+    {
+      fprintf (stderr, "mmap_zeromap failed.\n");
+      exit (2);
+    }
+  area2 = (unsigned long) p;
+  sigsegv_register (&dispatcher, (void *) area2, 0x4000, &area_handler, &area2);
+  if (mprotect ((void *) area2, 0x4000, PROT_READ) < 0)
+    {
+      fprintf (stderr, "mprotect failed.\n");
+      exit (2);
+    }
+  if (mprotect ((void *) area2, 0x4000, PROT_READ_WRITE) < 0
+      || mprotect ((void *) area2, 0x4000, PROT_READ) < 0)
+    {
+      fprintf (stderr, "mprotect failed.\n");
+      exit (2);
+    }
+
+  p = mmap_zeromap ((void *) 0x06990000, 0x4000);
+  if (p == (void *)(-1))
+    {
+      fprintf (stderr, "mmap_zeromap failed.\n");
+      exit (2);
+    }
+  area3 = (unsigned long) p;
+  sigsegv_register (&dispatcher, (void *) area3, 0x4000, &area_handler, &area3);
+  mprotect ((void *) area3, 0x4000, PROT_READ);
+
+  /* This access should call the handler.  */
+  ((volatile int *)area2)[230] = 22;
+  /* This access should call the handler.  */
+  ((volatile int *)area3)[412] = 33;
+  /* This access should not give a signal.  */
+  ((volatile int *)area2)[135] = 22;
+  /* This access should call the handler.  */
+  ((volatile int *)area1)[612] = 11;
+
+  barrier();
+
+  /* Check that the handler was called three times.  */
+  if (logcount != 3)
+    exit (1);
+  if (!(logdata[0] == area2 && logdata[1] == area3 && logdata[2] == area1))
+    exit (1);
+  printf ("Test passed.\n");
+  return 0;
+}
+
+#else
+
+int
+main ()
+{
+  return 77;
+}
+
+#endif