Allocate memory in DebugSupport beforehand, in order to avoid calling memory allocation services in high TPL level.

git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@2556 6f19259b-4bc3-4df7-8a09-765794883524

EdkModulePkg/Universal/DebugSupport/Dxe/Ia32/plDebugSupport.h

@@ -28,11 +28,18 @@ WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
 
 typedef UINT64  DESCRIPTOR;
 
+typedef
+VOID
+(*DEBUG_PROC) (
+  VOID
+  )
+;
+
 typedef struct {
   DESCRIPTOR  OrigDesc;
-  VOID (*OrigVector) (VOID);
+  DEBUG_PROC  OrigVector;
   DESCRIPTOR  NewDesc;
-  VOID (*StubEntry) (VOID);
+  DEBUG_PROC  StubEntry;
   VOID (*RegisteredCallback) ();
 } IDT_ENTRY;