1. Correct CopyMem and CompareMem to CopyGuid and CompareGuid for GUID data

[mirror_edk2.git] / MdePkg / Library / BaseMemoryLibMmx / Ia32 / CompareMem.S

#------------------------------------------------------------------------------\r
#\r
# Copyright (c) 2006, Intel Corporation\r
# All rights reserved. This program and the accompanying materials\r
# are licensed and made available under the terms and conditions of the BSD License\r
# which accompanies this distribution.  The full text of the license may be found at\r
# http://opensource.org/licenses/bsd-license.php\r
#\r
# THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r
# WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r
#\r
# Module Name:\r
#\r
#   CompareMem.Asm\r
#\r
# Abstract:\r
#\r
#   CompareMem function\r
#\r
# Notes:\r
#\r
#   The following BaseMemoryLib instances share the same version of this file:\r
#\r
#       BaseMemoryLibRepStr\r
#       BaseMemoryLibMmx\r
#       BaseMemoryLibSse2\r
#\r
#------------------------------------------------------------------------------\r
\r
.globl _InternalMemCompareMem\r
\r
#------------------------------------------------------------------------------\r
# INTN\r
# EFIAPI\r
# InternalMemCompareMem (\r
#   IN      CONST VOID                *DestinationBuffer,\r
#   IN      CONST VOID                *SourceBuffer,\r
#   IN      UINTN                     Length\r
#   );\r
#------------------------------------------------------------------------------\r
_InternalMemCompareMem:\r
    push    %esi\r
    push    %edi\r
    movl    12(%esp), %esi\r
    movl    16(%esp), %edi\r
    movl    20(%esp), %ecx\r
    repe    cmpsb\r
    movzbl  -1(%esi), %eax\r
    movzbl  -1(%edi), %edx\r
    subl    %edx, %eax\r
    pop     %edi\r
    pop     %esi\r
    ret\r