diff options
Diffstat (limited to 'ArmPkg/Library/BaseMemoryLibStm/AArch64/CopyMem.c')
| -rw-r--r-- | ArmPkg/Library/BaseMemoryLibStm/AArch64/CopyMem.c | 146 |
1 files changed, 0 insertions, 146 deletions
diff --git a/ArmPkg/Library/BaseMemoryLibStm/AArch64/CopyMem.c b/ArmPkg/Library/BaseMemoryLibStm/AArch64/CopyMem.c deleted file mode 100644 index 71ae02a03e..0000000000 --- a/ArmPkg/Library/BaseMemoryLibStm/AArch64/CopyMem.c +++ /dev/null @@ -1,146 +0,0 @@ -/** @file
-
- Copyright (c) 2012-2013, ARM Ltd. All rights reserved.<BR>
-
- 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"
-
-/**
- Copy Length bytes from Source to Destination.
-
- @param DestinationBuffer Target of copy
- @param SourceBuffer Place to copy from
- @param Length Number of bytes to copy
-
- @return Destination
-
-**/
-VOID *
-EFIAPI
-InternalMemCopyMem (
- OUT VOID *DestinationBuffer,
- IN CONST VOID *SourceBuffer,
- IN UINTN Length
- )
-{
- //
- // Declare the local variables that actually move the data elements as
- // volatile to prevent the optimizer from replacing this function with
- // the intrinsic memcpy()
- //
- volatile UINT8 *Destination8;
- CONST UINT8 *Source8;
- volatile UINT32 *Destination32;
- CONST UINT32 *Source32;
- volatile UINT64 *Destination64;
- CONST UINT64 *Source64;
- UINTN Alignment;
-
- if ((((UINTN)DestinationBuffer & 0x7) == 0) && (((UINTN)SourceBuffer & 0x7) == 0) && (Length >= 8)) {
- if (SourceBuffer > DestinationBuffer) {
- Destination64 = (UINT64*)DestinationBuffer;
- Source64 = (CONST UINT64*)SourceBuffer;
- while (Length >= 8) {
- *(Destination64++) = *(Source64++);
- Length -= 8;
- }
-
- // Finish if there are still some bytes to copy
- Destination8 = (UINT8*)Destination64;
- Source8 = (CONST UINT8*)Source64;
- while (Length-- != 0) {
- *(Destination8++) = *(Source8++);
- }
- } else if (SourceBuffer < DestinationBuffer) {
- Destination64 = (UINT64*)((UINTN)DestinationBuffer + Length);
- Source64 = (CONST UINT64*)((UINTN)SourceBuffer + Length);
-
- // Destination64 and Source64 were aligned on a 64-bit boundary
- // but if length is not a multiple of 8 bytes then they won't be
- // anymore.
-
- Alignment = Length & 0x7;
- if (Alignment != 0) {
- Destination8 = (UINT8*)Destination64;
- Source8 = (CONST UINT8*)Source64;
-
- while (Alignment-- != 0) {
- *(--Destination8) = *(--Source8);
- --Length;
- }
- Destination64 = (UINT64*)Destination8;
- Source64 = (CONST UINT64*)Source8;
- }
-
- while (Length > 0) {
- *(--Destination64) = *(--Source64);
- Length -= 8;
- }
- }
- } else if ((((UINTN)DestinationBuffer & 0x3) == 0) && (((UINTN)SourceBuffer & 0x3) == 0) && (Length >= 4)) {
- if (SourceBuffer > DestinationBuffer) {
- Destination32 = (UINT32*)DestinationBuffer;
- Source32 = (CONST UINT32*)SourceBuffer;
- while (Length >= 4) {
- *(Destination32++) = *(Source32++);
- Length -= 4;
- }
-
- // Finish if there are still some bytes to copy
- Destination8 = (UINT8*)Destination32;
- Source8 = (CONST UINT8*)Source32;
- while (Length-- != 0) {
- *(Destination8++) = *(Source8++);
- }
- } else if (SourceBuffer < DestinationBuffer) {
- Destination32 = (UINT32*)((UINTN)DestinationBuffer + Length);
- Source32 = (CONST UINT32*)((UINTN)SourceBuffer + Length);
-
- // Destination32 and Source32 were aligned on a 32-bit boundary
- // but if length is not a multiple of 4 bytes then they won't be
- // anymore.
-
- Alignment = Length & 0x3;
- if (Alignment != 0) {
- Destination8 = (UINT8*)Destination32;
- Source8 = (CONST UINT8*)Source32;
-
- while (Alignment-- != 0) {
- *(--Destination8) = *(--Source8);
- --Length;
- }
- Destination32 = (UINT32*)Destination8;
- Source32 = (CONST UINT32*)Source8;
- }
-
- while (Length > 0) {
- *(--Destination32) = *(--Source32);
- Length -= 4;
- }
- }
- } else {
- if (SourceBuffer > DestinationBuffer) {
- Destination8 = (UINT8*)DestinationBuffer;
- Source8 = (CONST UINT8*)SourceBuffer;
- while (Length-- != 0) {
- *(Destination8++) = *(Source8++);
- }
- } else if (SourceBuffer < DestinationBuffer) {
- Destination8 = (UINT8*)DestinationBuffer + Length;
- Source8 = (CONST UINT8*)SourceBuffer + Length;
- while (Length-- != 0) {
- *(--Destination8) = *(--Source8);
- }
- }
- }
- return DestinationBuffer;
-}
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