| //------------------------------------------------------------------------------ | |
| // | |
| // Copyright (c) 2011-2014, 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 lr | |
| CMP r0, r1 | |
| BXEQ lr | |
| BHI memmove_backward | |
| memmove_forward | |
| LDRB r3, [r1], #1 | |
| STRB r3, [r0], #1 | |
| SUBS r2, r2, #1 | |
| BNE memmove_forward | |
| BX lr | |
| memmove_backward | |
| add r0, r2 | |
| add r1, r2 | |
| memmove_backward_loop | |
| LDRB r3, [r1, #-1]! | |
| STRB r3, [r0, #-1]! | |
| SUBS r2, r2, #1 | |
| BNE memmove_backward_loop | |
| BX lr | |
| END |