diff --git a/dlls/ntdll/tests/Makefile.in b/dlls/ntdll/tests/Makefile.in
index 3b88897..43bdada 100644
--- a/dlls/ntdll/tests/Makefile.in
+++ b/dlls/ntdll/tests/Makefile.in
@@ -19,6 +19,7 @@ C_SRCS = \
 	rtl.c \
 	rtlbitmap.c \
 	rtlstr.c \
+	signal.c \
 	string.c \
 	time.c

diff --git a/dlls/ntdll/tests/signal.c b/dlls/ntdll/tests/signal.c
new file mode 100644
index 0000000..deacdf2
--- /dev/null
+++ b/dlls/ntdll/tests/signal.c
@@ -0,0 +1,100 @@
+/*
+ * Unit test suite for functions in ntdll signal_*.c files
+ *
+ * Copyright 2011 Janne Hakonen
+ *
+ * This 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.
+ *
+ * This 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 this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301,
USA
+ */
+
+#include "ntdll_test.h"
+#include <wine/exception.h>
+
+/* function pointers */
+static USHORT (WINAPI *pRtlCaptureStackBackTrace)(ULONG, ULONG, PVOID *,
ULONG *);
+
+/* function prototypes */
+static void test_pRtlCaptureStackBackTrace(void);
+static BOOL get_back_trace_with_invalid_frame_pointer(void);
+static void capture_stack_back_trace(void);
+
+/* Test function for RtlCaptureStackBackTrace. */
+static void test_pRtlCaptureStackBackTrace(void)
+{
+    ok(TRUE == get_back_trace_with_invalid_frame_pointer(),
"get_back_trace_with_invalid_frame_pointer() failed\n" );
+}
+
+/* This function attempts to invalidify one frame pointer and then calls
+ * capture_stack_back_trace(). If all goes well TRUE is returned,
+ * but if SEH exception is thrown FALSE is returned instead. */
+static BOOL get_back_trace_with_invalid_frame_pointer(void)
+{
+    BOOL result = FALSE;
+    void **frame;
+    void *old;
+
+    /* copy base pointer to frame */
+    __asm__ ("movl %%ebp, %0\n\t" : "=r" (frame));
+
+    /* invalidify next frame pointer */
+    old = *frame;
+    *frame = (void*)0xffffffff;
+
+    __TRY
+    {
+        /* try to get back trace with invalid call stack, exception is
thrown
+           if something breaks
+        */
+        capture_stack_back_trace();
+        result = TRUE;
+    }
+    __EXCEPT_ALL
+    {
+        trace("capture_stack_back_trace() threw SEH exception, returning
FALSE\n");
+        result = FALSE;
+    }
+    __ENDTRY
+
+    *frame = old;
+    return result;
+}
+
+/* This function just calls RtlCaptureStackBackTrace and doesn't return
anything. */
+static void capture_stack_back_trace(void)
+{
+    ULONG framesToSkip = 1;
+    ULONG maxCallers   = 62 - framesToSkip;
+    PULONG hash        = NULL;
+
+    void** callers = (void**) calloc(maxCallers, sizeof(void*));
+
+    pRtlCaptureStackBackTrace(framesToSkip, maxCallers, callers, hash);
+
+    free(callers);
+}
+
+START_TEST(signal)
+{
+    HMODULE mod = GetModuleHandleA("ntdll.dll");
+    pRtlCaptureStackBackTrace = (void *)GetProcAddress(mod,
"RtlCaptureStackBackTrace");
+    if (pRtlCaptureStackBackTrace)
+    {
+        test_pRtlCaptureStackBackTrace();
+    }
+    else
+    {
+        win_skip("Required RtlCaptureStackBackTrace function is not
available\n");
+    }
+}
+