1 files changed, 200 insertions, 0 deletions

diff --git a/private/mvdm/vdmexts/reflect.c b/private/mvdm/vdmexts/reflect.c
new file mode 100644
index 000000000..1dc1e1ba4
--- /dev/null
+++ b/private/mvdm/vdmexts/reflect.c
@@ -0,0 +1,200 @@
+/*++
+
+Copyright (c) 1992  Microsoft Corporation
+
+Module Name:
+
+    reflect.c
+
+Abstract:
+
+    This module contains extensions having to do with event and exception
+    reflection.
+
+Author:
+
+    Dave Hastings (daveh) 20-Apr-1992
+
+Revision History:
+
+    Neil Sandlin (NeilSa) 15-Jan-1996 Merged with vdmexts
+
+--*/
+
+#include <precomp.h>
+#pragma hdrstop
+
+VOID
+er(
+    CMD_ARGLIST
+    )
+/*++
+
+Routine Description:
+
+    This routine toggles the exception reflection bit in the vdmtib, and
+    reports the current state
+
+Arguments:
+
+    None.
+
+Return Value:
+
+    None.
+
+--*/
+{
+    BOOL Status;
+    PVOID Address;
+    ULONG Flags;
+
+    CMD_INIT();
+
+    if ( fWinDbg ) {
+        (*Print)("This command is not supported under WinDbg\n");
+    } else {
+        Address = (PVOID) (FIXED_NTVDMSTATE_LINEAR + GetIntelBase());
+
+        //
+        // Read the current value of the flags
+        //
+
+        Status = READMEM(
+            Address,
+            &Flags,
+            sizeof(ULONG)
+            );
+
+        if (!Status)  {
+
+            (ULONG)Address = (*GetExpression)("ntvdm!InitialVdmTibFlags");
+            Status = READMEM(
+                (PVOID)Address,
+                &Flags,
+                sizeof(ULONG)
+                );
+
+            if (!Status) {
+                GetLastError();
+                (*Print)("Could not get InitialTibflags\n");
+                return;
+            }
+        }
+
+        //
+        // Toggle exception bit
+        //
+
+        Flags ^= VDM_BREAK_EXCEPTIONS;
+
+        Status = WRITEMEM(
+            Address,
+            &Flags,
+            sizeof(ULONG)
+            );
+
+        if (!Status) {
+            GetLastError();
+            (*Print)("Could not get set Flags\n");
+            return;
+        }
+
+        //
+        // Tell user what will happen with exceptions
+        //
+
+        if (Flags & VDM_BREAK_EXCEPTIONS) {
+            (*Print)("GP Fault exceptions will be reflected to the debugger\n");
+        } else {
+            (*Print)("GP Fault exceptions will be reflected to the application\n");
+        }
+    }
+}
+
+VOID
+dr(
+    CMD_ARGLIST
+    )
+/*++
+
+Routine Description:
+
+    This routine toggles the debug reflection bit in the vdmtib, and
+    reports the current state
+
+Arguments:
+
+    None.
+
+Return Value:
+
+    None.
+
+--*/
+{
+    BOOL Status;
+    PVOID Address;
+    ULONG Flags;
+
+    CMD_INIT();
+
+    if ( fWinDbg ) {
+        (*Print)("This command is not supported under WinDbg\n");
+    } else {
+        Address = (PVOID) (FIXED_NTVDMSTATE_LINEAR + GetIntelBase());
+
+
+        //
+        // Read the current value of the flags
+        //
+
+        Status = READMEM(
+            Address,
+            &Flags,
+            sizeof(ULONG)
+            );
+
+        if (!Status) {
+            (ULONG)Address = (*GetExpression)("ntvdm!InitialVdmTibFlags");
+            Status = READMEM(
+                (PVOID)Address,
+                &Flags,
+                sizeof(ULONG)
+                );
+
+            if (!Status) {
+                GetLastError();
+                (*Print)("Could not get InitialTibflags\n");
+                return;
+            }
+        }
+        //
+        // Toggle exception bit
+        //
+
+        Flags ^= VDM_BREAK_DEBUGGER;
+
+        Status = WRITEMEM(
+            Address,
+            &Flags,
+            sizeof(ULONG)
+            );
+
+        if (!Status) {
+            GetLastError();
+            (*Print)("Could not get set Flags\n");
+            return;
+        }
+
+        //
+        // Tell user what will happen with exceptions
+        //
+
+        if (!(Flags & VDM_BREAK_DEBUGGER)) {
+            (*Print)("Debug faults will be reflected to the application\n");
+        } else {
+            (*Print)("Debug faults will be reflected to the debugger\n");
+        }
+    }
+}