Implemented SymLoadModuleEx.
diff --git a/dlls/dbghelp/dbghelp.c b/dlls/dbghelp/dbghelp.c
index 2651a00..3ebc7c3 100644
--- a/dlls/dbghelp/dbghelp.c
+++ b/dlls/dbghelp/dbghelp.c
@@ -100,6 +100,21 @@
 }
 
 /******************************************************************
+ *             validate_addr64 (internal)
+ *
+ */
+BOOL validate_addr64(DWORD64 addr)
+{
+    if (addr >> 32)
+    {
+        FIXME("Unsupported address %s\n", wine_dbgstr_longlong(addr));
+        SetLastError(ERROR_INVALID_PARAMETER);
+        return FALSE;
+    }
+    return TRUE;
+}
+
+/******************************************************************
  *		SymSetSearchPath (DBGHELP.@)
  *
  */
diff --git a/dlls/dbghelp/dbghelp.spec b/dlls/dbghelp/dbghelp.spec
index 3615310..cff2ab7 100644
--- a/dlls/dbghelp/dbghelp.spec
+++ b/dlls/dbghelp/dbghelp.spec
@@ -72,7 +72,7 @@
 @ stdcall SymInitialize(long str long)
 @ stdcall SymLoadModule64(long long str str double long)
 @ stdcall SymLoadModule(long long str str long long)
-@ stub SymLoadModuleEx
+@ stdcall SymLoadModuleEx(long long str str double long ptr long)
 @ stdcall SymMatchFileName(str str ptr ptr)
 @ stub SymMatchString
 @ stdcall SymRegisterCallback64(long ptr double)
diff --git a/dlls/dbghelp/dbghelp_private.h b/dlls/dbghelp/dbghelp_private.h
index eb86e50..fdb7e31 100644
--- a/dlls/dbghelp/dbghelp_private.h
+++ b/dlls/dbghelp/dbghelp_private.h
@@ -312,7 +312,8 @@
 /* dbghelp.c */
 extern struct process* process_find_by_handle(HANDLE hProcess);
 extern HANDLE hMsvcrt;
-
+extern BOOL validate_addr64(DWORD64 addr);
+	
 /* elf_module.c */
 typedef BOOL (*elf_enum_modules_cb)(const char*, unsigned long addr, void* user);
 extern BOOL         elf_enum_modules(HANDLE hProc, elf_enum_modules_cb, void*);
diff --git a/dlls/dbghelp/module.c b/dlls/dbghelp/module.c
index 8cec363..18e0162 100644
--- a/dlls/dbghelp/module.c
+++ b/dlls/dbghelp/module.c
@@ -375,6 +375,23 @@
 }
 
 /***********************************************************************
+ *			SymLoadModuleEx (DBGHELP.@)
+ */
+DWORD64 WINAPI  SymLoadModuleEx(HANDLE hProcess, HANDLE hFile, PCSTR ImageName,
+                                PCSTR ModuleName, DWORD64 BaseOfDll, DWORD DllSize,
+                                PMODLOAD_DATA Data, DWORD Flags)
+{
+    if (Data || Flags)
+    {
+        FIXME("Unsupported parameters (%p, %lx) for %s\n", Data, Flags, ImageName);
+        if (Flags & 1) return TRUE;
+    }
+    if (!validate_addr64(BaseOfDll)) return FALSE;
+    return SymLoadModule(hProcess, hFile, (char*)ImageName, (char*)ModuleName,
+                         (DWORD)BaseOfDll, DllSize);
+}
+
+/***********************************************************************
  *                     SymLoadModule64 (DBGHELP.@)
  */
 DWORD WINAPI SymLoadModule64(HANDLE hProcess, HANDLE hFile, char* ImageName,
diff --git a/include/dbghelp.h b/include/dbghelp.h
index 1d3c8a6..734af15 100644
--- a/include/dbghelp.h
+++ b/include/dbghelp.h
@@ -614,7 +614,7 @@
 BOOL    WINAPI SymGetModuleInfoW(HANDLE, DWORD, PIMAGEHLP_MODULEW);
 DWORD   WINAPI SymGetModuleBase(HANDLE, DWORD);
 DWORD   WINAPI SymLoadModule(HANDLE, HANDLE, PSTR, PSTR, DWORD, DWORD);
-DWORD64 WINAPI SymLoadModuleEx(HANDLE, HANDLE, PSTR, PSTR, DWORD64, DWORD,
+DWORD64 WINAPI SymLoadModuleEx(HANDLE, HANDLE, PCSTR, PCSTR, DWORD64, DWORD,
                                PMODLOAD_DATA, DWORD);
 BOOL    WINAPI SymUnloadModule(HANDLE, DWORD);