diff options
Diffstat (limited to 'ArmPkg/Library/CompilerIntrinsicsLib/Arm/memmove.asm')
-rwxr-xr-x | ArmPkg/Library/CompilerIntrinsicsLib/Arm/memmove.asm | 108 |
1 files changed, 54 insertions, 54 deletions
diff --git a/ArmPkg/Library/CompilerIntrinsicsLib/Arm/memmove.asm b/ArmPkg/Library/CompilerIntrinsicsLib/Arm/memmove.asm index d84429ef7f..ae5c990f57 100755 --- a/ArmPkg/Library/CompilerIntrinsicsLib/Arm/memmove.asm +++ b/ArmPkg/Library/CompilerIntrinsicsLib/Arm/memmove.asm @@ -1,54 +1,54 @@ -//------------------------------------------------------------------------------ -// -// Copyright (c) 2011, ARM 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 __aeabi_memmove - - AREA Memmove, CODE, READONLY - -; -;VOID -;EFIAPI -;__aeabi_memmove ( -; IN VOID *Destination, -; IN CONST VOID *Source, -; IN UINT32 Size -; ); -; -__aeabi_memmove - CMP r2, #0 - BXEQ r14 - CMP r0, r1 - BXEQ r14 - BHI memmove_backward - BLS memmove_forward - -memmove_forward - LDRB r3, [r1], #1 - STRB r3, [r0], #1 - SUBS r2, r2, #1 - BXEQ r14 - B memmove_forward - -memmove_backward - add r0, r2 - add r1, r2 -memmove_backward_loop - LDRB r3, [r1], #-1 - STRB r3, [r0], #-1 - SUBS r2, r2, #-1 - BXEQ r14 - B memmove_backward_loop - - END +//------------------------------------------------------------------------------
+//
+// Copyright (c) 2011, ARM 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 __aeabi_memmove
+
+ AREA Memmove, CODE, READONLY
+
+;
+;VOID
+;EFIAPI
+;__aeabi_memmove (
+; IN VOID *Destination,
+; IN CONST VOID *Source,
+; IN UINT32 Size
+; );
+;
+__aeabi_memmove
+ CMP r2, #0
+ BXEQ r14
+ CMP r0, r1
+ BXEQ r14
+ BHI memmove_backward
+ BLS memmove_forward
+
+memmove_forward
+ LDRB r3, [r1], #1
+ STRB r3, [r0], #1
+ SUBS r2, r2, #1
+ BXEQ r14
+ B memmove_forward
+
+memmove_backward
+ add r0, r2
+ add r1, r2
+memmove_backward_loop
+ LDRB r3, [r1], #-1
+ STRB r3, [r0], #-1
+ SUBS r2, r2, #-1
+ BXEQ r14
+ B memmove_backward_loop
+
+ END
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