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@9113 6f19259b-4bc3-4df7-8a09-765794883524

1 files changed, 41 insertions, 0 deletions

diff --git a/MdePkg/Library/BaseLib/Arm/CpuPause.asm b/MdePkg/Library/BaseLib/Arm/CpuPause.asm
new file mode 100644
index 0000000000..f6d19c9d96
--- /dev/null
+++ b/MdePkg/Library/BaseLib/Arm/CpuPause.asm
@@ -0,0 +1,41 @@
+;------------------------------------------------------------------------------ 
+;
+; CpuPause() 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.
+;
+;------------------------------------------------------------------------------
+
+  EXPORT CpuPause
+  AREA cpu_pause, CODE, READONLY
+
+;/**
+;  Requests CPU to pause for a short period of time.
+;
+;  Requests CPU to pause for a short period of time. Typically used in MP
+;  systems to prevent memory starvation while waiting for a spin lock.
+;
+;**/
+;VOID
+;EFIAPI
+;CpuPause (
+;  VOID
+;  );
+;
+CpuPause
+    NOP
+    NOP
+    NOP
+    NOP
+    NOP
+    BX LR
+
+  END