Correct file comment for DxeServicesTableLib.c

git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@6070 6f19259b-4bc3-4df7-8a09-765794883524

diff --git a/MdePkg/Library/DxeServicesTableLib/DxeServicesTableLib.c b/MdePkg/Library/DxeServicesTableLib/DxeServicesTableLib.c
index 2c5baea6265dc6cbb5cefc8d32158b5f8a78a865..aef582204d2f7943d64c2bb704907082eda4ebbe 100644 (file)
--- a/MdePkg/Library/DxeServicesTableLib/DxeServicesTableLib.c
+++ b/MdePkg/Library/DxeServicesTableLib/DxeServicesTableLib.c
@@ -1,6 +1,13 @@
 /** @file\r
-  This library produce EFI_DXE_SERVICE pointer in global EFI system table. It should\r
-  be linked to a DXE driver who use gBS.\r
+  This library implement library class DxeServiceTableLib.\r
+  It produce EFI_DXE_SERVICE pointer in global variable gDS in library's constructure.\r
+  \r
+  A DXE driver can use gDS pointer to access services in EFI_DXE_SERVICE, if this\r
+  DXE driver declare that use DxeServicesTableLib library class and link to this \r
+  library instance.\r
+\r
+  Please attention this library instance can not be used after EFI_SYSTEM_TABLE is \r
+  initialized.\r
   \r
   This library contains contruct function to retrieve EFI_DXE_SERIVCE, this construct\r
   function will be invoked in DXE driver's autogen file.\r