Daniel Zimmerman <netzimme@aim.com>

- Implement RtlGetCallersAddress.
- Add RtlCaptureStackBackTrace prototype to PSDK.
See issue #3125 for more details.

svn path=/trunk/; revision=32693

reactos/include/psdk/winnt.h

@@ -2902,6 +2902,17 @@ typedef struct _RTL_CRITICAL_SECTION {
 } RTL_CRITICAL_SECTION,*PRTL_CRITICAL_SECTION;
 #endif
 
+NTSYSAPI
+WORD  
+NTAPI
+RtlCaptureStackBackTrace(
+    IN DWORD FramesToSkip,
+    IN DWORD FramesToCapture,
+    OUT PVOID *BackTrace,
+    OUT PDWORD BackTraceHash OPTIONAL
+);
+
+
 NTSYSAPI
 PVOID
 NTAPI

reactos/lib/rtl/i386/except.c

@@ -16,14 +16,47 @@
 /* PUBLIC FUNCTIONS **********************************************************/
 
 /*
- * @unimplemented
+ * @implemented
  */
 VOID
 NTAPI
 RtlGetCallersAddress(OUT PVOID *CallersAddress,
                      OUT PVOID *CallersCaller)
 {
-    UNIMPLEMENTED;
+    USHORT FrameCount;
+    PVOID  BackTrace[2];
+    PULONG BackTraceHash = NULL;
+
+    /* Get the tow back trace address */
+    FrameCount = RtlCaptureStackBackTrace(2, 2, &BackTrace[0],BackTraceHash);
+
+    /* Only if user want it */
+    if (*CallersAddress != NULL)
+    {
+        /* only when first frames exist */ 
+        if (FrameCount >= 1)
+        {
+            *CallersAddress = BackTrace[0];
+        }
+        else
+        {
+            *CallersAddress = NULL;
+        }
+    }
+
+    /* Only if user want it */
+    if (*CallersCaller != NULL)
+    {
+        /* only when second frames exist */ 
+        if (FrameCount >= 2)
+        {
+            *CallersCaller = BackTrace[1];
+        }
+        else
+        {
+            *CallersCaller = NULL;
+        }
+    }
 }
 
 /*