Home | History | Annotate | Download | only in Ia32
      1 #------------------------------------------------------------------------------
      2 #
      3 # Copyright (c) 2006 - 2008, Intel Corporation. All rights reserved.<BR>
      4 # This program and the accompanying materials
      5 # are licensed and made available under the terms and conditions of the BSD License
      6 # which accompanies this distribution.  The full text of the license may be found at
      7 # http://opensource.org/licenses/bsd-license.php.
      8 #
      9 # THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
     10 # WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
     11 #
     12 # Module Name:
     13 #
     14 #   ScanMem16.Asm
     15 #
     16 # Abstract:
     17 #
     18 #   ScanMem16 function
     19 #
     20 # Notes:
     21 #
     22 #   The following BaseMemoryLib instances contain the same copy of this file:
     23 #
     24 #       BaseMemoryLibRepStr
     25 #       BaseMemoryLibMmx
     26 #       BaseMemoryLibSse2
     27 #       BaseMemoryLibOptDxe
     28 #       BaseMemoryLibOptPei
     29 #
     30 #------------------------------------------------------------------------------
     31 
     32 ASM_GLOBAL ASM_PFX(InternalMemScanMem16)
     33 
     34 #------------------------------------------------------------------------------
     35 # CONST VOID *
     36 # EFIAPI
     37 # InternalMemScanMem16 (
     38 #   IN      CONST VOID                *Buffer,
     39 #   IN      UINTN                     Length,
     40 #   IN      UINT16                    Value
     41 #   );
     42 #------------------------------------------------------------------------------
     43 ASM_PFX(InternalMemScanMem16):
     44     push    %edi
     45     movl    12(%esp), %ecx
     46     movl    8(%esp), %edi
     47     movl    16(%esp), %eax
     48     repne   scasw
     49     leal    -2(%edi), %eax
     50     cmovnz  %ecx, %eax
     51     pop     %edi
     52     ret
     53