From 3e0c6c79949564f8c28949232fcbc24c69be91db Mon Sep 17 00:00:00 2001
From: Thomas Bluemel <thomas@reactsoft.com>
Date: Sat, 13 Nov 2004 13:09:07 +0000
Subject: [PATCH] implemented MmGetSystemRoutineAddress()

svn path=/trunk/; revision=11643
---
 reactos/ntoskrnl/ldr/loader.c |  6 +++---
 reactos/ntoskrnl/mm/mm.c      | 36 +++++++++++++++++++++++++++++++----
 2 files changed, 35 insertions(+), 7 deletions(-)

diff --git a/reactos/ntoskrnl/ldr/loader.c b/reactos/ntoskrnl/ldr/loader.c
index 2063db2ffb3..c0f421715c7 100644
--- a/reactos/ntoskrnl/ldr/loader.c
+++ b/reactos/ntoskrnl/ldr/loader.c
@@ -1,4 +1,4 @@
-/* $Id: loader.c,v 1.150 2004/10/26 10:56:38 ekohl Exp $
+/* $Id: loader.c,v 1.151 2004/11/13 13:09:07 weiden Exp $
  * 
  * COPYRIGHT:       See COPYING in the top level directory
  * PROJECT:         ReactOS kernel
@@ -43,8 +43,8 @@
 
 LIST_ENTRY ModuleListHead;
 KSPIN_LOCK ModuleListLock;
-STATIC MODULE_OBJECT NtoskrnlModuleObject;
-STATIC MODULE_OBJECT HalModuleObject;
+MODULE_OBJECT NtoskrnlModuleObject;
+MODULE_OBJECT HalModuleObject;
 
 LIST_ENTRY ModuleTextListHead;
 STATIC MODULE_TEXT_SECTION NtoskrnlTextSection;
diff --git a/reactos/ntoskrnl/mm/mm.c b/reactos/ntoskrnl/mm/mm.c
index dc6bc448069..e63506ade45 100644
--- a/reactos/ntoskrnl/mm/mm.c
+++ b/reactos/ntoskrnl/mm/mm.c
@@ -16,7 +16,7 @@
  *  along with this program; if not, write to the Free Software
  *  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  */
-/* $Id: mm.c,v 1.79 2004/10/22 20:38:22 ekohl Exp $
+/* $Id: mm.c,v 1.80 2004/11/13 13:09:07 weiden Exp $
  *
  * COPYRIGHT:   See COPYING in the top directory
  * PROJECT:     ReactOS kernel 
@@ -35,6 +35,9 @@
 
 /* GLOBALS *****************************************************************/
 
+extern MODULE_OBJECT NtoskrnlModuleObject;
+extern MODULE_OBJECT HalModuleObject;
+
 PVOID EXPORTED MmUserProbeAddress = NULL;
 PVOID EXPORTED MmHighestUserAddress = NULL;
 PBOOLEAN EXPORTED Mm64BitPhysicalAddress = FALSE;
@@ -496,7 +499,7 @@ MmSetAddressRangeModified (
 }
 
 /*
- * @unimplemented
+ * @implemented
  */
 PVOID
 NTKERNELAPI
@@ -504,8 +507,33 @@ MmGetSystemRoutineAddress (
     IN PUNICODE_STRING SystemRoutineName
     )
 {
-	UNIMPLEMENTED;
-	return 0;
+  PVOID ProcAddress;
+  ANSI_STRING AnsiRoutineName;
+  NTSTATUS Status;
+  
+  if(!NT_SUCCESS(RtlUnicodeStringToAnsiString(&AnsiRoutineName,
+                                              SystemRoutineName,
+                                              TRUE)))
+  {
+    return NULL;
+  }
+  
+  Status = LdrGetProcedureAddress(NtoskrnlModuleObject.Base,
+                                  &AnsiRoutineName,
+                                  0,
+                                  &ProcAddress);
+  
+  if(!NT_SUCCESS(Status))
+  {
+    Status = LdrGetProcedureAddress(HalModuleObject.Base,
+                                    &AnsiRoutineName,
+                                    0,
+                                    &ProcAddress);
+  }
+  
+  RtlFreeAnsiString(&AnsiRoutineName);
+  
+  return (NT_SUCCESS(Status) ? ProcAddress : NULL);
 }
 
 /* EOF */