Update CpuSleep() for IPF.

[mirror_edk2.git] / MdePkg / Library / BaseMemoryLibMmx / Ia32 / ZeroMem.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
#   ZeroMem.asm\r
#\r
# Abstract:\r
#\r
#   ZeroMem function\r
#\r
# Notes:\r
#\r
#------------------------------------------------------------------------------\r
\r
.globl _InternalMemZeroMem\r
\r
#------------------------------------------------------------------------------\r
#  VOID *\r
#  EFIAPI\r
#  InternalMemZeroMem (\r
#    IN VOID   *Buffer,\r
#    IN UINTN  Count\r
#    );\r
#------------------------------------------------------------------------------\r
_InternalMemZeroMem:\r
    push    %edi\r
    movl    8(%esp), %edi\r
    movl    12(%esp), %ecx\r
    movl    %ecx, %edx\r
    shrl    $3, %ecx\r
    jz      L_ZeroBytes\r
    pxor    %mm0, %mm0\r
L0:\r
    movq    %mm0, (%edi)\r
    addl    $8, %edi\r
    loop    L0\r
L_ZeroBytes:\r
    andl    $7, %edx\r
    xorl    %eax, %eax\r
    movl    %edx, %ecx\r
    rep\r
    stosb\r
    movl    8(%esp), %eax\r
    pop     %edi\r
    ret\r