MdePkg/Library/BaseSynchronizationLib: Enable VS2017/ARM64 builds

Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: Pete Batard <pete@akeo.ie>
Reviewed-by: Liming Gao <liming.gao@intel.com>

2 files changed, 207 insertions, 1 deletions

diff --git a/MdePkg/Library/BaseSynchronizationLib/AArch64/Synchronization.asm b/MdePkg/Library/BaseSynchronizationLib/AArch64/Synchronization.asm
new file mode 100644
index 0000000000..0b13b26621
--- /dev/null
+++ b/MdePkg/Library/BaseSynchronizationLib/AArch64/Synchronization.asm
@@ -0,0 +1,205 @@
+;  Implementation of synchronization functions for ARM architecture (AArch64)

+;

+;  Copyright (c) 2012-2015, ARM Limited. All rights reserved.

+;  Copyright (c) 2015, 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.

+;

+;

+

+  EXPORT InternalSyncCompareExchange16

+  EXPORT InternalSyncCompareExchange32

+  EXPORT InternalSyncCompareExchange64

+  EXPORT InternalSyncIncrement

+  EXPORT InternalSyncDecrement

+  AREA BaseSynchronizationLib_LowLevel, CODE, READONLY

+

+;/**

+;  Performs an atomic compare exchange operation on a 16-bit unsigned integer.

+;

+;  Performs an atomic compare exchange operation on the 16-bit unsigned integer

+;  specified by Value.  If Value is equal to CompareValue, then Value is set to

+;  ExchangeValue and CompareValue is returned.  If Value is not equal to CompareValue,

+;  then Value is returned.  The compare exchange operation must be performed using

+;  MP safe mechanisms.

+;

+;  @param  Value         A pointer to the 16-bit value for the compare exchange

+;                        operation.

+;  @param  CompareValue  16-bit value used in compare operation.

+;  @param  ExchangeValue 16-bit value used in exchange operation.

+;

+;  @return The original *Value before exchange.

+;

+;**/

+;UINT16

+;EFIAPI

+;InternalSyncCompareExchange16 (

+;  IN      volatile UINT16           *Value,

+;  IN      UINT16                    CompareValue,

+;  IN      UINT16                    ExchangeValue

+;  )

+InternalSyncCompareExchange16

+  uxth    w1, w1

+  uxth    w2, w2

+  dmb     sy

+

+InternalSyncCompareExchange16Again

+  ldxrh   w3, [x0]

+  cmp     w3, w1

+  bne     InternalSyncCompareExchange16Fail

+

+InternalSyncCompareExchange16Exchange

+  stxrh   w4, w2, [x0]

+  cbnz    w4, InternalSyncCompareExchange16Again

+

+InternalSyncCompareExchange16Fail

+  dmb     sy

+  mov     w0, w3

+  ret

+

+;/**

+;  Performs an atomic compare exchange operation on a 32-bit unsigned integer.

+;

+;  Performs an atomic compare exchange operation on the 32-bit unsigned integer

+;  specified by Value.  If Value is equal to CompareValue, then Value is set to

+;  ExchangeValue and CompareValue is returned.  If Value is not equal to CompareValue,

+;  then Value is returned.  The compare exchange operation must be performed using

+;  MP safe mechanisms.

+;

+;  @param  Value         A pointer to the 32-bit value for the compare exchange

+;                        operation.

+;  @param  CompareValue  32-bit value used in compare operation.

+;  @param  ExchangeValue 32-bit value used in exchange operation.

+;

+;  @return The original *Value before exchange.

+;

+;**/

+;UINT32

+;EFIAPI

+;InternalSyncCompareExchange32 (

+;  IN      volatile UINT32           *Value,

+;  IN      UINT32                    CompareValue,

+;  IN      UINT32                    ExchangeValue

+;  )

+InternalSyncCompareExchange32

+  dmb     sy

+

+InternalSyncCompareExchange32Again

+  ldxr    w3, [x0]

+  cmp     w3, w1

+  bne     InternalSyncCompareExchange32Fail

+

+InternalSyncCompareExchange32Exchange

+  stxr    w4, w2, [x0]

+  cbnz    w4, InternalSyncCompareExchange32Again

+

+InternalSyncCompareExchange32Fail

+  dmb     sy

+  mov     w0, w3

+  ret

+

+;/**

+;  Performs an atomic compare exchange operation on a 64-bit unsigned integer.

+;

+;  Performs an atomic compare exchange operation on the 64-bit unsigned integer specified

+;  by Value.  If Value is equal to CompareValue, then Value is set to ExchangeValue and

+;  CompareValue is returned.  If Value is not equal to CompareValue, then Value is returned.

+;  The compare exchange operation must be performed using MP safe mechanisms.

+;

+;  @param  Value         A pointer to the 64-bit value for the compare exchange

+;                        operation.

+;  @param  CompareValue  64-bit value used in compare operation.

+;  @param  ExchangeValue 64-bit value used in exchange operation.

+;

+;  @return The original *Value before exchange.

+;

+;**/

+;UINT64

+;EFIAPI

+;InternalSyncCompareExchange64 (

+;  IN      volatile UINT64           *Value,

+;  IN      UINT64                    CompareValue,

+;  IN      UINT64                    ExchangeValue

+;  )

+InternalSyncCompareExchange64

+  dmb     sy

+

+InternalSyncCompareExchange64Again

+  ldxr    x3, [x0]

+  cmp     x3, x1

+  bne     InternalSyncCompareExchange64Fail

+

+InternalSyncCompareExchange64Exchange

+  stxr    w4, x2, [x0]

+  cbnz    w4, InternalSyncCompareExchange64Again

+

+InternalSyncCompareExchange64Fail

+  dmb     sy

+  mov     x0, x3

+  ret

+

+;/**

+;  Performs an atomic increment of an 32-bit unsigned integer.

+;

+;  Performs an atomic increment of the 32-bit unsigned integer specified by

+;  Value and returns the incremented value. The increment operation must be

+;  performed using MP safe mechanisms. The state of the return value is not

+;  guaranteed to be MP safe.

+;

+;  @param  Value A pointer to the 32-bit value to increment.

+;

+;  @return The incremented value.

+;

+;**/

+;UINT32

+;EFIAPI

+;InternalSyncIncrement (

+;  IN      volatile UINT32           *Value

+;  )

+InternalSyncIncrement

+  dmb     sy

+TryInternalSyncIncrement

+  ldxr    w1, [x0]

+  add     w1, w1, #1

+  stxr    w2, w1, [x0]

+  cbnz    w2, TryInternalSyncIncrement

+  mov     w0, w1

+  dmb     sy

+  ret

+

+;/**

+;  Performs an atomic decrement of an 32-bit unsigned integer.

+;

+;  Performs an atomic decrement of the 32-bit unsigned integer specified by

+;  Value and returns the decrement value. The decrement operation must be

+;  performed using MP safe mechanisms. The state of the return value is not

+;  guaranteed to be MP safe.

+;

+;  @param  Value A pointer to the 32-bit value to decrement.

+;

+;  @return The decrement value.

+;

+;**/

+;UINT32

+;EFIAPI

+;InternalSyncDecrement (

+;  IN      volatile UINT32           *Value

+;  )

+InternalSyncDecrement

+  dmb     sy

+TryInternalSyncDecrement

+  ldxr    w1, [x0]

+  sub     w1, w1, #1

+  stxr    w2, w1, [x0]

+  cbnz    w2, TryInternalSyncDecrement

+  mov     w0, w1

+  dmb     sy

+  ret

+

+  END

diff --git a/MdePkg/Library/BaseSynchronizationLib/BaseSynchronizationLib.inf b/MdePkg/Library/BaseSynchronizationLib/BaseSynchronizationLib.inf
index 265de1341a..6fca7dd293 100755
--- a/MdePkg/Library/BaseSynchronizationLib/BaseSynchronizationLib.inf
+++ b/MdePkg/Library/BaseSynchronizationLib/BaseSynchronizationLib.inf
@@ -105,7 +105,8 @@
 

 [Sources.AARCH64]

   Synchronization.c

-  AArch64/Synchronization.S

+  AArch64/Synchronization.S     | GCC

+  AArch64/Synchronization.asm   | MSFT

 

 [Packages]

   MdePkg/MdePkg.dec