[tkreuzer] 43820: partly implement KdpSysWriteControlSpace

Author: tkreuzer
Date: Wed Oct 28 23:38:42 2009
New Revision: 43820

URL: http://svn.reactos.org/svn/reactos?rev=43820&view=rev
Log:
partly implement KdpSysWriteControlSpace

Modified:
    branches/ros-amd64-bringup/reactos/ntoskrnl/kd64/amd64/kdsup.c

Modified: branches/ros-amd64-bringup/reactos/ntoskrnl/kd64/amd64/kdsup.c
URL:
http://svn.reactos.org/svn/reactos/branches/ros-amd64-bringup/reactos/ntosk…
==============================================================================
--- branches/ros-amd64-bringup/reactos/ntoskrnl/kd64/amd64/kdsup.c [iso-8859-1]
(original)
+++ branches/ros-amd64-bringup/reactos/ntoskrnl/kd64/amd64/kdsup.c [iso-8859-1] Wed Oct 28
23:38:42 2009
@@ -226,9 +226,28 @@
                         IN ULONG Length,
                         OUT PULONG ActualLength)
 {
-    UNIMPLEMENTED;
-    while (TRUE);
-    return STATUS_UNSUCCESSFUL;
+    PVOID ControlStart;
+    PKPRCB Prcb = KiProcessorBlock[Processor];
+    PKIPCR Pcr = CONTAINING_RECORD(Prcb, KIPCR, Prcb);
+
+    switch (BaseAddress)
+    {
+        case AMD64_DEBUG_CONTROL_SPACE_KSPECIAL:
+            /* Copy SpecialRegisters */
+            ControlStart = &Prcb->ProcessorState.SpecialRegisters;
+            *ActualLength = sizeof(KSPECIAL_REGISTERS);
+            break;
+
+        default:
+            *ActualLength = 0;
+            ASSERT(FALSE);
+            return STATUS_UNSUCCESSFUL;
+    }
+
+    /* Copy the memory */
+    RtlCopyMemory(ControlStart, Buffer, min(Length, *ActualLength));
+
+    return STATUS_SUCCESS;
 }
 
 NTSTATUS