diff options
| author | Olivier Martin <olivier.martin@arm.com> | 2013-09-02 09:02:16 +0000 |
|---|---|---|
| committer | oliviermartin <oliviermartin@6f19259b-4bc3-4df7-8a09-765794883524> | 2013-09-02 09:02:16 +0000 |
| commit | 8c1e795168bf0b63252e7ad293324fe5e2c5abe3 (patch) | |
| tree | afa9b73530e8b9d49bca6b7d1658ff767edcdd1c /MdePkg | |
| parent | bf1a8c06996a0d4d1a4893970bc55ccc3cd6f95b (diff) | |
Add Memory fence for ARM Architecture (32 and 64 bit)
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Olivier Martin <olivier.martin@arm.com>
Reviewed-by: Liming Gao <liming.gao@intel.com>
git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@14615 6f19259b-4bc3-4df7-8a09-765794883524
Diffstat (limited to 'MdePkg')
| -rw-r--r-- | MdePkg/Library/BaseLib/AArch64/MemoryFence.S | 39 | ||||
| -rw-r--r-- | MdePkg/Library/BaseLib/Arm/MemoryFence.S | 39 | ||||
| -rw-r--r-- | MdePkg/Library/BaseLib/Arm/MemoryFence.asm | 39 | ||||
| -rw-r--r-- | MdePkg/Library/BaseLib/BaseLib.inf | 3 |
4 files changed, 120 insertions, 0 deletions
diff --git a/MdePkg/Library/BaseLib/AArch64/MemoryFence.S b/MdePkg/Library/BaseLib/AArch64/MemoryFence.S new file mode 100644 index 000000000..5c69e0817 --- /dev/null +++ b/MdePkg/Library/BaseLib/AArch64/MemoryFence.S @@ -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
diff --git a/MdePkg/Library/BaseLib/Arm/MemoryFence.S b/MdePkg/Library/BaseLib/Arm/MemoryFence.S new file mode 100644 index 000000000..a2284ba63 --- /dev/null +++ b/MdePkg/Library/BaseLib/Arm/MemoryFence.S @@ -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
diff --git a/MdePkg/Library/BaseLib/Arm/MemoryFence.asm b/MdePkg/Library/BaseLib/Arm/MemoryFence.asm new file mode 100644 index 000000000..8f3d05f4b --- /dev/null +++ b/MdePkg/Library/BaseLib/Arm/MemoryFence.asm @@ -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
diff --git a/MdePkg/Library/BaseLib/BaseLib.inf b/MdePkg/Library/BaseLib/BaseLib.inf index 3e47b55d1..d431ff0c0 100644 --- a/MdePkg/Library/BaseLib/BaseLib.inf +++ b/MdePkg/Library/BaseLib/BaseLib.inf @@ -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
|