diff options
Diffstat (limited to 'src/VBox/Devices/EFI/Firmware/MdePkg/Library/BaseMemoryLibOptPei/IsZeroBufferWrapper.c')
-rw-r--r-- | src/VBox/Devices/EFI/Firmware/MdePkg/Library/BaseMemoryLibOptPei/IsZeroBufferWrapper.c | 48 |
1 files changed, 48 insertions, 0 deletions
diff --git a/src/VBox/Devices/EFI/Firmware/MdePkg/Library/BaseMemoryLibOptPei/IsZeroBufferWrapper.c b/src/VBox/Devices/EFI/Firmware/MdePkg/Library/BaseMemoryLibOptPei/IsZeroBufferWrapper.c new file mode 100644 index 00000000..40d73f0c --- /dev/null +++ b/src/VBox/Devices/EFI/Firmware/MdePkg/Library/BaseMemoryLibOptPei/IsZeroBufferWrapper.c @@ -0,0 +1,48 @@ +/** @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.<BR> + SPDX-License-Identifier: BSD-2-Clause-Patent + +**/ + +#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); +} |