[ros-diffs] [fireball] 32693: Daniel Zimmerman <[e-mail]> - Implement RtlGetCallersAddress. - Add RtlCaptureStackBackTrace prototype to PSDK. See issue #3125 for more details.

Author: fireball
Date: Sat Mar 15 04:29:54 2008
New Revision: 32693

URL: http://svn.reactos.org/svn/reactos?rev=3D32693&view=3Drev
Log:
Daniel Zimmerman <netzimme(a)aim.com>
- Implement RtlGetCallersAddress.
- Add RtlCaptureStackBackTrace prototype to PSDK.
See issue #3125 for more details.

Modified:
    trunk/reactos/include/psdk/winnt.h
    trunk/reactos/lib/rtl/i386/except.c

Modified: trunk/reactos/include/psdk/winnt.h
URL: http://svn.reactos.org/svn/reactos/trunk/reactos/include/psdk/winnt.h?=
rev=3D32693&r1=3D32692&r2=3D32693&view=3Ddiff
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--- trunk/reactos/include/psdk/winnt.h (original)
+++ trunk/reactos/include/psdk/winnt.h Sat Mar 15 04:29:54 2008
@@ -2903,6 +2903,17 @@
 #endif
 =

 NTSYSAPI
+WORD  =

+NTAPI
+RtlCaptureStackBackTrace(
+    IN DWORD FramesToSkip,
+    IN DWORD FramesToCapture,
+    OUT PVOID *BackTrace,
+    OUT PDWORD BackTraceHash OPTIONAL
+);
+
+
+NTSYSAPI
 PVOID
 NTAPI
 RtlPcToFileHeader(

Modified: trunk/reactos/lib/rtl/i386/except.c
URL: http://svn.reactos.org/svn/reactos/trunk/reactos/lib/rtl/i386/except.c=
?rev=3D32693&r1=3D32692&r2=3D32693&view=3Ddiff
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
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--- trunk/reactos/lib/rtl/i386/except.c (original)
+++ trunk/reactos/lib/rtl/i386/except.c Sat Mar 15 04:29:54 2008
@@ -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 =3D NULL;
+
+    /* Get the tow back trace address */
+    FrameCount =3D RtlCaptureStackBackTrace(2, 2, &BackTrace[0],BackTraceH=
ash);
+
+    /* Only if user want it */
+    if (*CallersAddress !=3D NULL)
+    {
+        /* only when first frames exist */ =

+        if (FrameCount >=3D 1)
+        {
+            *CallersAddress =3D BackTrace[0];
+        }
+        else
+        {
+            *CallersAddress =3D NULL;
+        }
+    }
+
+    /* Only if user want it */
+    if (*CallersCaller !=3D NULL)
+    {
+        /* only when second frames exist */ =

+        if (FrameCount >=3D 2)
+        {
+            *CallersCaller =3D BackTrace[1];
+        }
+        else
+        {
+            *CallersCaller =3D NULL;
+        }
+    }
 }
 =

 /*