[ros-diffs] [tkreuzer] 46405: [RTL] Fix RtlInitializeSListHead and RtlQueryDepthSList

[tkreuzer at svn.reactos.org]

Author: tkreuzer
Date: Wed Mar 24 22:56:24 2010
New Revision: 46405

URL: http://svn.reactos.org/svn/reactos?rev=46405&view=rev
Log:
[RTL]
Fix RtlInitializeSListHead and RtlQueryDepthSList


Modified:
    branches/ros-amd64-bringup/reactos/lib/rtl/slist.c

Modified: branches/ros-amd64-bringup/reactos/lib/rtl/slist.c
URL: http://svn.reactos.org/svn/reactos/branches/ros-amd64-bringup/reactos/lib/rtl/slist.c?rev=46405&r1=46404&r2=46405&view=diff
==============================================================================
--- branches/ros-amd64-bringup/reactos/lib/rtl/slist.c [iso-8859-1] (original)
+++ branches/ros-amd64-bringup/reactos/lib/rtl/slist.c [iso-8859-1] Wed Mar 24 22:56:24 2010
@@ -17,15 +17,32 @@
 
 VOID
 NTAPI
-RtlInitializeSListHead(IN PSLIST_HEADER ListHead)
+RtlInitializeSListHead(
+  OUT PSLIST_HEADER SListHead)
 {
-#ifdef _WIN64
-    ListHead->Alignment = 0;
-    ListHead->Region = 0;
-    ListHead->Header8.Init = 1;
-    // ListHead->Header8.HeaderType = 1; // FIXME: depending on cmpxchg16b support?
-#else
-    ListHead->Alignment = 0;
+#if defined(_IA64_)
+    ULONG64 FeatureBits;
+#endif
+
+#if defined(_WIN64)
+    /* Make sure the alignment is ok */
+    if (((ULONG_PTR)SListHead & 0xf) != 0)
+    {
+        RtlRaiseStatus(STATUS_DATATYPE_MISALIGNMENT);
+    }
+#endif
+
+    /* Zero it */
+    SListHead->Alignment = 0;
+    SListHead->Region = 0;
+
+#if defined(_IA64_)
+    FeatureBits = __getReg(CV_IA64_CPUID4);
+    if (FeatureBits & KF_16BYTE_INSTR)
+    {
+        SListHead->Header16.HeaderType = 1;
+        SListHead->Header16.Init = 1;
+    }
 #endif
 }
 
@@ -64,7 +81,7 @@
 {
 #ifdef _WIN64
     return ListHead->Header8.HeaderType ? 
-        ListHead->Header16.Sequence : ListHead->Header8.Sequence;
+        ListHead->Header16.Depth : ListHead->Header8.Depth;
 #else
     return ListHead->Depth;
 #endif