Add Add ARM support

Add C inline assembly files for IA32 and X64 GCC builds.


git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@9114 6f19259b-4bc3-4df7-8a09-765794883524

MdePkg/Library/BaseCpuLib/Arm/CpuSleep.S

@@ -0,0 +1,38 @@
+#------------------------------------------------------------------------------ 
+#
+# CpuSleep() for ARM
+#
+# Copyright (c) 2006 - 2009, Intel Corporation<BR>
+# Portions copyright (c) 2008-2009 Apple Inc.<BR>
+# All rights reserved. This program and the accompanying materials
+# are licensed and made available under the terms and conditions of the BSD License
+# which accompanies this distribution.  The full text of the license may be found at
+# http://opensource.org/licenses/bsd-license.php
+#
+# THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
+# WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
+#
+#------------------------------------------------------------------------------
+
+.text
+.p2align 2
+.globl ASM_PFX(CpuSleep)
+
+#/**
+#  Places the CPU in a sleep state until an interrupt is received.
+#
+#  Places the CPU in a sleep state until an interrupt is received. If interrupts
+#  are disabled prior to calling this function, then the CPU will be placed in a
+#  sleep state indefinitely.
+#
+#**/
+#VOID
+#EFIAPI
+#CpuSleep (
+#  VOID
+#  );
+#
+ASM_PFX(CpuSleep):
+    mov r0,#0
+    mcr p15,0,r0,c7,c0,4   ;Wait for Interrupt instruction
+    bx  lr