From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mga01.intel.com (mga01.intel.com [192.55.52.88]) by ml01.01.org (Postfix) with ESMTP id 431181A1E01 for ; Wed, 17 Aug 2016 21:54:29 -0700 (PDT) Received: from fmsmga003.fm.intel.com ([10.253.24.29]) by fmsmga101.fm.intel.com with ESMTP; 17 Aug 2016 21:54:29 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.28,537,1464678000"; d="scan'208";a="750256501" Received: from shwdeopenpsi014.ccr.corp.intel.com ([10.239.9.34]) by FMSMGA003.fm.intel.com with ESMTP; 17 Aug 2016 21:54:24 -0700 From: Hao Wu To: edk2-devel@lists.01.org, liming.gao@intel.com Cc: Hao Wu , Michael D Kinney , Jiewen Yao Date: Thu, 18 Aug 2016 12:53:57 +0800 Message-Id: <1471496040-11796-4-git-send-email-hao.a.wu@intel.com> X-Mailer: git-send-email 1.9.5.msysgit.0 In-Reply-To: <1471496040-11796-1-git-send-email-hao.a.wu@intel.com> References: <1471496040-11796-1-git-send-email-hao.a.wu@intel.com> Subject: [PATCH v2 3/6] MdePkg BaseMemoryLib: Add C implementation of API IsZeroBuffer() X-BeenThere: edk2-devel@lists.01.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: EDK II Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 18 Aug 2016 04:54:29 -0000 Add the implementation of API IsZeroBuffer() via C language for the following library instances: BaseMemoryLib PeiMemoryLib UefiMemoryLib Cc: Michael D Kinney Cc: Liming Gao Cc: Jiewen Yao Contributed-under: TianoCore Contribution Agreement 1.0 Signed-off-by: Hao Wu --- MdePkg/Include/Library/BaseMemoryLib.h | 23 +++++++++ MdePkg/Library/BaseMemoryLib/BaseMemoryLib.inf | 3 +- MdePkg/Library/BaseMemoryLib/IsZeroBufferWrapper.c | 54 ++++++++++++++++++++++ MdePkg/Library/BaseMemoryLib/MemLibGeneric.c | 31 ++++++++++++- MdePkg/Library/BaseMemoryLib/MemLibInternals.h | 19 +++++++- MdePkg/Library/PeiMemoryLib/IsZeroBufferWrapper.c | 54 ++++++++++++++++++++++ MdePkg/Library/PeiMemoryLib/MemLibGeneric.c | 31 ++++++++++++- MdePkg/Library/PeiMemoryLib/MemLibInternals.h | 19 +++++++- MdePkg/Library/PeiMemoryLib/PeiMemoryLib.inf | 3 +- MdePkg/Library/UefiMemoryLib/IsZeroBufferWrapper.c | 54 ++++++++++++++++++++++ MdePkg/Library/UefiMemoryLib/MemLibGeneric.c | 31 ++++++++++++- MdePkg/Library/UefiMemoryLib/MemLibInternals.h | 19 +++++++- MdePkg/Library/UefiMemoryLib/UefiMemoryLib.inf | 3 +- 13 files changed, 335 insertions(+), 9 deletions(-) create mode 100644 MdePkg/Library/BaseMemoryLib/IsZeroBufferWrapper.c create mode 100644 MdePkg/Library/PeiMemoryLib/IsZeroBufferWrapper.c create mode 100644 MdePkg/Library/UefiMemoryLib/IsZeroBufferWrapper.c diff --git a/MdePkg/Include/Library/BaseMemoryLib.h b/MdePkg/Include/Library/BaseMemoryLib.h index ed7fa00..0e565c1 100644 --- a/MdePkg/Include/Library/BaseMemoryLib.h +++ b/MdePkg/Include/Library/BaseMemoryLib.h @@ -463,4 +463,27 @@ IsZeroGuid ( IN CONST GUID *Guid ); +/** + Checks if the contents of a buffer are all zeros. + + This function checks whether the contents of a buffer are all zeros. If the + contents are all zeros, return TRUE. Otherwise, return FALSE. + + If Length > 0 and Buffer is NULL, then ASSERT(). + If Length is greater than (MAX_ADDRESS - Buffer + 1), then ASSERT(). + + @param Buffer The pointer to the buffer to be checked. + @param Length The size of the buffer (in bytes) to be checked. + + @retval TRUE Contents of the buffer are all zeros. + @retval FALSE Contents of the buffer are not all zeros. + +**/ +BOOLEAN +EFIAPI +IsZeroBuffer ( + IN CONST VOID *Buffer, + IN UINTN Length + ); + #endif diff --git a/MdePkg/Library/BaseMemoryLib/BaseMemoryLib.inf b/MdePkg/Library/BaseMemoryLib/BaseMemoryLib.inf index 5dfab35..6d906e9 100644 --- a/MdePkg/Library/BaseMemoryLib/BaseMemoryLib.inf +++ b/MdePkg/Library/BaseMemoryLib/BaseMemoryLib.inf @@ -3,7 +3,7 @@ # # Base Memory Library implementation - no ASM. # -# Copyright (c) 2007 - 2014, Intel Corporation. All rights reserved.
+# Copyright (c) 2007 - 2016, Intel Corporation. All rights reserved.
# # This program and the accompanying materials # are licensed and made available under the terms and conditions of the BSD License @@ -42,6 +42,7 @@ SetMem16Wrapper.c SetMemWrapper.c CopyMemWrapper.c + IsZeroBufferWrapper.c MemLibGeneric.c MemLibGuid.c CopyMem.c diff --git a/MdePkg/Library/BaseMemoryLib/IsZeroBufferWrapper.c b/MdePkg/Library/BaseMemoryLib/IsZeroBufferWrapper.c new file mode 100644 index 0000000..c42c1aa --- /dev/null +++ b/MdePkg/Library/BaseMemoryLib/IsZeroBufferWrapper.c @@ -0,0 +1,54 @@ +/** @file + Implementation of IsZeroBuffer function. + + The following BaseMemoryLib instances contain the same copy of this file: + + BaseMemoryLib + BaseMemoryLibMmx + BaseMemoryLibSse2 + BaseMemoryLibRepStr + BaseMemoryLibOptDxe + BaseMemoryLibOptPei + PeiMemoryLib + UefiMemoryLib + + Copyright (c) 2016, Intel Corporation. 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 "MemLibInternals.h" + +/** + Checks if the contents of a buffer are all zeros. + + This function checks whether the contents of a buffer are all zeros. If the + contents are all zeros, return TRUE. Otherwise, return FALSE. + + If Length > 0 and Buffer is NULL, then ASSERT(). + If Length is greater than (MAX_ADDRESS - Buffer + 1), then ASSERT(). + + @param Buffer The pointer to the buffer to be checked. + @param Length The size of the buffer (in bytes) to be checked. + + @retval TRUE Contents of the buffer are all zeros. + @retval FALSE Contents of the buffer are not all zeros. + +**/ +BOOLEAN +EFIAPI +IsZeroBuffer ( + IN CONST VOID *Buffer, + IN UINTN Length + ) +{ + ASSERT (!(Buffer == NULL && Length > 0)); + ASSERT ((Length - 1) <= (MAX_ADDRESS - (UINTN)Buffer)); + return InternalMemIsZeroBuffer (Buffer, Length); +} diff --git a/MdePkg/Library/BaseMemoryLib/MemLibGeneric.c b/MdePkg/Library/BaseMemoryLib/MemLibGeneric.c index a977c4a..b058be8 100644 --- a/MdePkg/Library/BaseMemoryLib/MemLibGeneric.c +++ b/MdePkg/Library/BaseMemoryLib/MemLibGeneric.c @@ -6,7 +6,7 @@ PeiMemoryLib UefiMemoryLib - Copyright (c) 2006 - 2010, Intel Corporation. All rights reserved.
+ Copyright (c) 2006 - 2016, Intel Corporation. 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 @@ -262,3 +262,32 @@ InternalMemScanMem64 ( } while (--Length != 0); return NULL; } + +/** + Checks whether the contents of a buffer are all zeros. + + @param Buffer The pointer to the buffer to be checked. + @param Length The size of the buffer (in bytes) to be checked. + + @retval TRUE Contents of the buffer are all zeros. + @retval FALSE Contents of the buffer are not all zeros. + +**/ +BOOLEAN +EFIAPI +InternalMemIsZeroBuffer ( + IN CONST VOID *Buffer, + IN UINTN Length + ) +{ + CONST UINT8 *BufferData; + UINTN Index; + + BufferData = Buffer; + for (Index = 0; Index < Length; Index++) { + if (BufferData[Index] != 0) { + return FALSE; + } + } + return TRUE; +} diff --git a/MdePkg/Library/BaseMemoryLib/MemLibInternals.h b/MdePkg/Library/BaseMemoryLib/MemLibInternals.h index 6f75839..7d8ecbe 100644 --- a/MdePkg/Library/BaseMemoryLib/MemLibInternals.h +++ b/MdePkg/Library/BaseMemoryLib/MemLibInternals.h @@ -9,7 +9,7 @@ BaseMemoryLibOptDxe BaseMemoryLibOptPei - Copyright (c) 2006 - 2010, Intel Corporation. All rights reserved.
+ Copyright (c) 2006 - 2016, Intel Corporation. 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 @@ -231,4 +231,21 @@ InternalMemScanMem64 ( IN UINT64 Value ); +/** + Checks whether the contents of a buffer are all zeros. + + @param Buffer The pointer to the buffer to be checked. + @param Length The size of the buffer (in bytes) to be checked. + + @retval TRUE Contents of the buffer are all zeros. + @retval FALSE Contents of the buffer are not all zeros. + +**/ +BOOLEAN +EFIAPI +InternalMemIsZeroBuffer ( + IN CONST VOID *Buffer, + IN UINTN Length + ); + #endif diff --git a/MdePkg/Library/PeiMemoryLib/IsZeroBufferWrapper.c b/MdePkg/Library/PeiMemoryLib/IsZeroBufferWrapper.c new file mode 100644 index 0000000..c42c1aa --- /dev/null +++ b/MdePkg/Library/PeiMemoryLib/IsZeroBufferWrapper.c @@ -0,0 +1,54 @@ +/** @file + Implementation of IsZeroBuffer function. + + The following BaseMemoryLib instances contain the same copy of this file: + + BaseMemoryLib + BaseMemoryLibMmx + BaseMemoryLibSse2 + BaseMemoryLibRepStr + BaseMemoryLibOptDxe + BaseMemoryLibOptPei + PeiMemoryLib + UefiMemoryLib + + Copyright (c) 2016, Intel Corporation. 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 "MemLibInternals.h" + +/** + Checks if the contents of a buffer are all zeros. + + This function checks whether the contents of a buffer are all zeros. If the + contents are all zeros, return TRUE. Otherwise, return FALSE. + + If Length > 0 and Buffer is NULL, then ASSERT(). + If Length is greater than (MAX_ADDRESS - Buffer + 1), then ASSERT(). + + @param Buffer The pointer to the buffer to be checked. + @param Length The size of the buffer (in bytes) to be checked. + + @retval TRUE Contents of the buffer are all zeros. + @retval FALSE Contents of the buffer are not all zeros. + +**/ +BOOLEAN +EFIAPI +IsZeroBuffer ( + IN CONST VOID *Buffer, + IN UINTN Length + ) +{ + ASSERT (!(Buffer == NULL && Length > 0)); + ASSERT ((Length - 1) <= (MAX_ADDRESS - (UINTN)Buffer)); + return InternalMemIsZeroBuffer (Buffer, Length); +} diff --git a/MdePkg/Library/PeiMemoryLib/MemLibGeneric.c b/MdePkg/Library/PeiMemoryLib/MemLibGeneric.c index 53f1caf..490b244 100644 --- a/MdePkg/Library/PeiMemoryLib/MemLibGeneric.c +++ b/MdePkg/Library/PeiMemoryLib/MemLibGeneric.c @@ -6,7 +6,7 @@ PeiMemoryLib UefiMemoryLib - Copyright (c) 2006 - 2010, Intel Corporation. All rights reserved.
+ Copyright (c) 2006 - 2016, Intel Corporation. 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 @@ -258,3 +258,32 @@ InternalMemScanMem64 ( } while (--Length != 0); return NULL; } + +/** + Checks whether the contents of a buffer are all zeros. + + @param Buffer The pointer to the buffer to be checked. + @param Length The size of the buffer (in bytes) to be checked. + + @retval TRUE Contents of the buffer are all zeros. + @retval FALSE Contents of the buffer are not all zeros. + +**/ +BOOLEAN +EFIAPI +InternalMemIsZeroBuffer ( + IN CONST VOID *Buffer, + IN UINTN Length + ) +{ + CONST UINT8 *BufferData; + UINTN Index; + + BufferData = Buffer; + for (Index = 0; Index < Length; Index++) { + if (BufferData[Index] != 0) { + return FALSE; + } + } + return TRUE; +} diff --git a/MdePkg/Library/PeiMemoryLib/MemLibInternals.h b/MdePkg/Library/PeiMemoryLib/MemLibInternals.h index 8a1e1df..85b4292 100644 --- a/MdePkg/Library/PeiMemoryLib/MemLibInternals.h +++ b/MdePkg/Library/PeiMemoryLib/MemLibInternals.h @@ -1,7 +1,7 @@ /** @file Declaration of internal functions for Base Memory Library. - Copyright (c) 2006 - 2010, Intel Corporation. All rights reserved.
+ Copyright (c) 2006 - 2016, Intel Corporation. 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 @@ -229,4 +229,21 @@ InternalMemScanMem64 ( IN UINT64 Value ); +/** + Checks whether the contents of a buffer are all zeros. + + @param Buffer The pointer to the buffer to be checked. + @param Length The size of the buffer (in bytes) to be checked. + + @retval TRUE Contents of the buffer are all zeros. + @retval FALSE Contents of the buffer are not all zeros. + +**/ +BOOLEAN +EFIAPI +InternalMemIsZeroBuffer ( + IN CONST VOID *Buffer, + IN UINTN Length + ); + #endif diff --git a/MdePkg/Library/PeiMemoryLib/PeiMemoryLib.inf b/MdePkg/Library/PeiMemoryLib/PeiMemoryLib.inf index 58af9d0..56d584d 100644 --- a/MdePkg/Library/PeiMemoryLib/PeiMemoryLib.inf +++ b/MdePkg/Library/PeiMemoryLib/PeiMemoryLib.inf @@ -4,7 +4,7 @@ # Base Memory Library implementation that uses PEI Services # where possible for size reduction. # -# Copyright (c) 2006 - 2014, Intel Corporation. All rights reserved.
+# Copyright (c) 2006 - 2016, Intel Corporation. All rights reserved.
# # This program and the accompanying materials # are licensed and made available under the terms and conditions of the BSD License @@ -42,6 +42,7 @@ SetMem16Wrapper.c SetMemWrapper.c CopyMemWrapper.c + IsZeroBufferWrapper.c MemLibGeneric.c MemLibGuid.c MemLib.c diff --git a/MdePkg/Library/UefiMemoryLib/IsZeroBufferWrapper.c b/MdePkg/Library/UefiMemoryLib/IsZeroBufferWrapper.c new file mode 100644 index 0000000..c42c1aa --- /dev/null +++ b/MdePkg/Library/UefiMemoryLib/IsZeroBufferWrapper.c @@ -0,0 +1,54 @@ +/** @file + Implementation of IsZeroBuffer function. + + The following BaseMemoryLib instances contain the same copy of this file: + + BaseMemoryLib + BaseMemoryLibMmx + BaseMemoryLibSse2 + BaseMemoryLibRepStr + BaseMemoryLibOptDxe + BaseMemoryLibOptPei + PeiMemoryLib + UefiMemoryLib + + Copyright (c) 2016, Intel Corporation. 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 "MemLibInternals.h" + +/** + Checks if the contents of a buffer are all zeros. + + This function checks whether the contents of a buffer are all zeros. If the + contents are all zeros, return TRUE. Otherwise, return FALSE. + + If Length > 0 and Buffer is NULL, then ASSERT(). + If Length is greater than (MAX_ADDRESS - Buffer + 1), then ASSERT(). + + @param Buffer The pointer to the buffer to be checked. + @param Length The size of the buffer (in bytes) to be checked. + + @retval TRUE Contents of the buffer are all zeros. + @retval FALSE Contents of the buffer are not all zeros. + +**/ +BOOLEAN +EFIAPI +IsZeroBuffer ( + IN CONST VOID *Buffer, + IN UINTN Length + ) +{ + ASSERT (!(Buffer == NULL && Length > 0)); + ASSERT ((Length - 1) <= (MAX_ADDRESS - (UINTN)Buffer)); + return InternalMemIsZeroBuffer (Buffer, Length); +} diff --git a/MdePkg/Library/UefiMemoryLib/MemLibGeneric.c b/MdePkg/Library/UefiMemoryLib/MemLibGeneric.c index 1ec8bf6..da02b6c 100644 --- a/MdePkg/Library/UefiMemoryLib/MemLibGeneric.c +++ b/MdePkg/Library/UefiMemoryLib/MemLibGeneric.c @@ -6,7 +6,7 @@ PeiMemoryLib UefiMemoryLib - Copyright (c) 2006 - 2010, Intel Corporation. All rights reserved.
+ Copyright (c) 2006 - 2016, Intel Corporation. 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 @@ -258,3 +258,32 @@ InternalMemScanMem64 ( } while (--Length != 0); return NULL; } + +/** + Checks whether the contents of a buffer are all zeros. + + @param Buffer The pointer to the buffer to be checked. + @param Length The size of the buffer (in bytes) to be checked. + + @retval TRUE Contents of the buffer are all zeros. + @retval FALSE Contents of the buffer are not all zeros. + +**/ +BOOLEAN +EFIAPI +InternalMemIsZeroBuffer ( + IN CONST VOID *Buffer, + IN UINTN Length + ) +{ + CONST UINT8 *BufferData; + UINTN Index; + + BufferData = Buffer; + for (Index = 0; Index < Length; Index++) { + if (BufferData[Index] != 0) { + return FALSE; + } + } + return TRUE; +} diff --git a/MdePkg/Library/UefiMemoryLib/MemLibInternals.h b/MdePkg/Library/UefiMemoryLib/MemLibInternals.h index 0443b50..cafbb4d 100644 --- a/MdePkg/Library/UefiMemoryLib/MemLibInternals.h +++ b/MdePkg/Library/UefiMemoryLib/MemLibInternals.h @@ -1,7 +1,7 @@ /** @file Declaration of internal functions for Base Memory Library. - Copyright (c) 2006 - 2009, Intel Corporation. All rights reserved.
+ Copyright (c) 2006 - 2016, Intel Corporation. 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 @@ -229,4 +229,21 @@ InternalMemScanMem64 ( IN UINT64 Value ); +/** + Checks whether the contents of a buffer are all zeros. + + @param Buffer The pointer to the buffer to be checked. + @param Length The size of the buffer (in bytes) to be checked. + + @retval TRUE Contents of the buffer are all zeros. + @retval FALSE Contents of the buffer are not all zeros. + +**/ +BOOLEAN +EFIAPI +InternalMemIsZeroBuffer ( + IN CONST VOID *Buffer, + IN UINTN Length + ); + #endif diff --git a/MdePkg/Library/UefiMemoryLib/UefiMemoryLib.inf b/MdePkg/Library/UefiMemoryLib/UefiMemoryLib.inf index e82732f..7382204 100644 --- a/MdePkg/Library/UefiMemoryLib/UefiMemoryLib.inf +++ b/MdePkg/Library/UefiMemoryLib/UefiMemoryLib.inf @@ -4,7 +4,7 @@ # Base Memory Library implementation that uses EFI Boot Services # where possible for size reduction. # -# Copyright (c) 2006 - 2014, Intel Corporation. All rights reserved.
+# Copyright (c) 2006 - 2016, Intel Corporation. All rights reserved.
# # This program and the accompanying materials # are licensed and made available under the terms and conditions of the BSD License @@ -42,6 +42,7 @@ SetMem16Wrapper.c SetMemWrapper.c CopyMemWrapper.c + IsZeroBufferWrapper.c MemLibGeneric.c MemLibGuid.c MemLib.c -- 1.9.5.msysgit.0