[PATCH 08/26] ArmPkg/ArmSmcLibNull: move to generic C implementation

[Ard Biesheuvel <ard.biesheuvel@linaro.org>]

The C language is powerful enough to implement a function that does
absolutely nothing, so there is no need to resort to implementations
in assembler for various toolchains/architectures.

Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
---
 ArmPkg/Library/ArmSmcLibNull/Arm/ArmSmcNull.S                          | 20 ----------
 ArmPkg/Library/ArmSmcLibNull/Arm/ArmSmcNull.asm                        | 20 ----------
 ArmPkg/Library/ArmSmcLibNull/{AArch64/ArmSmcNull.S => ArmSmcLibNull.c} | 42 ++++++++++----------
 ArmPkg/Library/ArmSmcLibNull/ArmSmcLibNull.inf                         |  8 +---
 4 files changed, 24 insertions(+), 66 deletions(-)

diff --git a/ArmPkg/Library/ArmSmcLibNull/Arm/ArmSmcNull.S b/ArmPkg/Library/ArmSmcLibNull/Arm/ArmSmcNull.S
deleted file mode 100644
index 9eaefd30cff4..000000000000
--- a/ArmPkg/Library/ArmSmcLibNull/Arm/ArmSmcNull.S
+++ /dev/null
@@ -1,20 +0,0 @@
-//
-//  Copyright (c) 2012-2014, ARM Limited. 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
-.align 3
-
-GCC_ASM_EXPORT(ArmCallSmc)
-
-ASM_PFX(ArmCallSmc):
-  bx     lr
diff --git a/ArmPkg/Library/ArmSmcLibNull/Arm/ArmSmcNull.asm b/ArmPkg/Library/ArmSmcLibNull/Arm/ArmSmcNull.asm
deleted file mode 100644
index 3dcb25fa22f6..000000000000
--- a/ArmPkg/Library/ArmSmcLibNull/Arm/ArmSmcNull.asm
+++ /dev/null
@@ -1,20 +0,0 @@
-//
-//  Copyright (c) 2012-2014, ARM Limited. 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.
-//
-//
-
-
-    INCLUDE AsmMacroExport.inc
-
- RVCT_ASM_EXPORT ArmCallSmc
-  bx     lr
-
-  END
diff --git a/ArmPkg/Library/ArmSmcLibNull/AArch64/ArmSmcNull.S b/ArmPkg/Library/ArmSmcLibNull/ArmSmcLibNull.c
similarity index 73%
rename from ArmPkg/Library/ArmSmcLibNull/AArch64/ArmSmcNull.S
rename to ArmPkg/Library/ArmSmcLibNull/ArmSmcLibNull.c
index a6ef0e04da82..e5d4e511330c 100644
--- a/ArmPkg/Library/ArmSmcLibNull/AArch64/ArmSmcNull.S
+++ b/ArmPkg/Library/ArmSmcLibNull/ArmSmcLibNull.c
@@ -1,20 +1,22 @@
-//
-//  Copyright (c) 2012-2014, ARM Limited. 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
-.align 3
-
-GCC_ASM_EXPORT(ArmCallSmc)
-
-ASM_PFX(ArmCallSmc):
-  ret
+//
+//  Copyright (c) 2016, Linaro Limited. 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.
+//
+//
+
+#include <Base.h>
+#include <Library/ArmSmcLib.h>
+
+VOID
+ArmCallSmc (
+  IN OUT ARM_SMC_ARGS *Args
+  )
+{
+}
diff --git a/ArmPkg/Library/ArmSmcLibNull/ArmSmcLibNull.inf b/ArmPkg/Library/ArmSmcLibNull/ArmSmcLibNull.inf
index 6d75c28afbdd..db15a5f8bbb3 100644
--- a/ArmPkg/Library/ArmSmcLibNull/ArmSmcLibNull.inf
+++ b/ArmPkg/Library/ArmSmcLibNull/ArmSmcLibNull.inf
@@ -22,12 +22,8 @@ [Defines]
   VERSION_STRING                 = 1.0
   LIBRARY_CLASS                  = ArmSmcLib
 
-[Sources.ARM]
-  Arm/ArmSmcNull.asm    | RVCT
-  Arm/ArmSmcNull.S      | GCC
-
-[Sources.AARCH64]
-  AArch64/ArmSmcNull.S
+[Sources]
+  ArmSmcLibNull.c
 
 [Packages]
   MdePkg/MdePkg.dec
-- 
2.7.4