ArmPkg: Implement PeiServicesTablePointerLib using TPIDRURW register

This implementation use the Tpidrurw software context register to
store the PEI Services Table Pointer.

The author of this patch is Eugene Cohen (HP).



git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@11750 6f19259b-4bc3-4df7-8a09-765794883524

ArmPkg/Include/Chipset/ArmV7.h

@@ -388,4 +388,17 @@ VOID
 );
 
 
+UINTN
+EFIAPI
+ArmReadTpidrurw(
+VOID
+);
+
+
+VOID
+EFIAPI
+ArmWriteTpidrurw(
+UINTN Value
+);
+
 #endif // __ARM_V7_H__