projects / mirror_edk2.git / blame
| Commit | Line | Data |
|---|---|---|
| 3402aac7 | 1 | //------------------------------------------------------------------------------\r |
| 1e57a462 | 2 | //\r |
| 284fb5c8 | 3 | // Copyright (c) 2011-2014, ARM Limited. All rights reserved.\r |
| 1e57a462 | 4 | //\r |
| 4059386c | 5 | // SPDX-License-Identifier: BSD-2-Clause-Patent\r |
| 1e57a462 | 6 | //\r |
| 7 | //------------------------------------------------------------------------------\r | |
| 8 | \r | |
| 9 | \r | |
| 1e57a462 | 10 | \r |
| efda1775 | 11 | INCLUDE AsmMacroExport.inc\r |
| 1e57a462 | 12 | \r |
| 13 | ;\r | |
| 14 | ;VOID\r | |
| 15 | ;EFIAPI\r | |
| 16 | ;__aeabi_memmove (\r | |
| 17 | ; IN VOID *Destination,\r | |
| 18 | ; IN CONST VOID *Source,\r | |
| 19 | ; IN UINT32 Size\r | |
| 20 | ; );\r | |
| 21 | ;\r | |
| efda1775 | 22 | RVCT_ASM_EXPORT __aeabi_memmove\r |
| 1e57a462 | 23 | CMP r2, #0\r |
| 284fb5c8 | 24 | BXEQ lr\r |
| 1e57a462 | 25 | CMP r0, r1\r |
| 284fb5c8 | 26 | BXEQ lr\r |
| 1e57a462 | 27 | BHI memmove_backward\r |
| 1e57a462 | 28 | \r |
| 29 | memmove_forward\r | |
| 30 | LDRB r3, [r1], #1\r | |
| 31 | STRB r3, [r0], #1\r | |
| 32 | SUBS r2, r2, #1\r | |
| 284fb5c8 OM |
33 | BNE memmove_forward\r |
| 34 | BX lr\r | |
| 1e57a462 | 35 | \r |
| 36 | memmove_backward\r | |
| 37 | add r0, r2\r | |
| 38 | add r1, r2\r | |
| 39 | memmove_backward_loop\r | |
| 284fb5c8 OM |
40 | LDRB r3, [r1, #-1]!\r |
| 41 | STRB r3, [r0, #-1]!\r | |
| 42 | SUBS r2, r2, #1\r | |
| 43 | BNE memmove_backward_loop\r | |
| 44 | BX lr\r | |
| 1e57a462 | 45 | \r |
| 46 | END\r |