Revision: 14615
http://sourceforge.net/p/edk2/code/14615
Author: oliviermartin
Date: 2013-09-02 09:02:16 +0000 (Mon, 02 Sep 2013)
Log Message:
-----------
Add Memory fence for ARM Architecture (32 and 64 bit)
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Olivier Martin <[email protected]>
Reviewed-by: Liming Gao <[email protected]>
Modified Paths:
--------------
trunk/edk2/MdePkg/Library/BaseLib/BaseLib.inf
Added Paths:
-----------
trunk/edk2/MdePkg/Library/BaseLib/AArch64/MemoryFence.S
trunk/edk2/MdePkg/Library/BaseLib/Arm/MemoryFence.S
trunk/edk2/MdePkg/Library/BaseLib/Arm/MemoryFence.asm
Added: trunk/edk2/MdePkg/Library/BaseLib/AArch64/MemoryFence.S
===================================================================
--- trunk/edk2/MdePkg/Library/BaseLib/AArch64/MemoryFence.S
(rev 0)
+++ trunk/edk2/MdePkg/Library/BaseLib/AArch64/MemoryFence.S 2013-09-02
09:02:16 UTC (rev 14615)
@@ -0,0 +1,39 @@
+##------------------------------------------------------------------------------
+#
+# MemoryFence() for AArch64
+#
+# Copyright (c) 2013, ARM Ltd. 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
+
+GCC_ASM_EXPORT(MemoryFence)
+
+
+#/**
+# Used to serialize load and store operations.
+#
+# All loads and stores that proceed calls to this function are guaranteed to
be
+# globally visible when this function returns.
+#
+#**/
+#VOID
+#EFIAPI
+#MemoryFence (
+# VOID
+# );
+#
+ASM_PFX(MemoryFence):
+ // System wide Data Memory Barrier.
+ dmb sy
+ ret
Added: trunk/edk2/MdePkg/Library/BaseLib/Arm/MemoryFence.S
===================================================================
--- trunk/edk2/MdePkg/Library/BaseLib/Arm/MemoryFence.S
(rev 0)
+++ trunk/edk2/MdePkg/Library/BaseLib/Arm/MemoryFence.S 2013-09-02 09:02:16 UTC
(rev 14615)
@@ -0,0 +1,39 @@
+##------------------------------------------------------------------------------
+#
+# MemoryFence() for AArch64
+#
+# Copyright (c) 2013, ARM Ltd. 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
+
+GCC_ASM_EXPORT(MemoryFence)
+
+
+#/**
+# Used to serialize load and store operations.
+#
+# All loads and stores that proceed calls to this function are guaranteed to
be
+# globally visible when this function returns.
+#
+#**/
+#VOID
+#EFIAPI
+#MemoryFence (
+# VOID
+# );
+#
+ASM_PFX(MemoryFence):
+ // System wide Data Memory Barrier.
+ dmb
+ bx lr
Added: trunk/edk2/MdePkg/Library/BaseLib/Arm/MemoryFence.asm
===================================================================
--- trunk/edk2/MdePkg/Library/BaseLib/Arm/MemoryFence.asm
(rev 0)
+++ trunk/edk2/MdePkg/Library/BaseLib/Arm/MemoryFence.asm 2013-09-02
09:02:16 UTC (rev 14615)
@@ -0,0 +1,39 @@
+;------------------------------------------------------------------------------
+;
+; MemoryFence() for AArch64
+;
+; Copyright (c) 2013, ARM Ltd. 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 MemoryFence
+
+ AREA MemoryBarriers, CODE, READONLY
+
+;/**
+; Used to serialize load and store operations.
+;
+; All loads and stores that proceed calls to this function are guaranteed to
be
+; globally visible when this function returns.
+;
+;**/
+;VOID
+;EFIAPI
+;MemoryFence (
+; VOID
+; );
+;
+MemoryFence FUNCTION
+ dmb
+ bx lr
+ ENDFUNC
+
+ END
Modified: trunk/edk2/MdePkg/Library/BaseLib/BaseLib.inf
===================================================================
--- trunk/edk2/MdePkg/Library/BaseLib/BaseLib.inf 2013-09-02 02:21:40 UTC
(rev 14614)
+++ trunk/edk2/MdePkg/Library/BaseLib/BaseLib.inf 2013-09-02 09:02:16 UTC
(rev 14615)
@@ -468,6 +468,7 @@
Arm/GetInterruptsState.asm | RVCT
Arm/CpuPause.asm | RVCT
Arm/CpuBreakpoint.asm | RVCT
+ Arm/MemoryFence.asm | RVCT
Arm/Math64.S | GCC
Arm/SwitchStack.S | GCC
@@ -476,12 +477,14 @@
Arm/GetInterruptsState.S | GCC
Arm/SetJumpLongJump.S | GCC
Arm/CpuBreakpoint.S | GCC
+ Arm/MemoryFence.S | GCC
[Sources.AARCH64]
Arm/InternalSwitchStack.c
Arm/Unaligned.c
Math64.c
+ AArch64/MemoryFence.S | GCC
AArch64/SwitchStack.S | GCC
AArch64/EnableInterrupts.S | GCC
AArch64/DisableInterrupts.S | GCC
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