Adding support for a single stack, GCC check in will follow

git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@9697 6f19259b-4bc3-4df7-8a09-765794883524

ArmPkg/Drivers/CpuDxe/CpuDxe.inf

@@ -1,4 +1,3 @@
-#%HEADER%
 #/** @file
 #  
 #  DXE CPU driver
@@ -28,8 +27,18 @@
   CpuDxe.h
   DebugSupport.c
   Exception.c
-  ExceptionSupport.asm | RVCT
-  ExceptionSupport.S   | GCC
+
+#
+# Prior to ARMv6 we have multiple stacks, one per mode
+#
+#  ExceptionSupport.asm | RVCT
+  ExceptionSupport.S         | GCC
+
+#
+# ARMv6 or later uses a single stack via srs/stm instructions
+#
+  ExceptionSupport.ARMv6.asm | RVCT
+#  ExceptionSupport.ARMv6.S   | GCC
 
 [Packages]
   ArmPkg/ArmPkg.dec