Update the copyright notice format

[mirror_edk2.git] / EdkCompatibilityPkg / Foundation / Library / EfiCommonLib / Ia32 / GetPowerOfTwo.S

#/*++\r
#\r
#Copyright (c) 2006, Intel Corporation. All rights reserved.<BR>\r
#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
#  GetPowerOfTwo.c\r
#\r
#Abstract:\r
#\r
#  Calculates the largest integer that is both \r
#  a power of two and less than Input\r
#\r
#--*/\r
#include "EfiBind.h"\r
#---------------------------------------------------------------------------\r
    .686: \r
    #.MODEL flat,C\r
    .code: \r
\r
#---------------------------------------------------------------------------\r
.globl ASM_PFX(GetPowerOfTwo)\r
#UINT64\r
#GetPowerOfTwo (\r
#  IN UINT64   Input\r
#  )\r
#/*++\r
#\r
#Routine Description:\r
#\r
#  Calculates the largest integer that is both \r
#  a power of two and less than Input\r
#\r
#Arguments:\r
#\r
#  Input  - value to calculate power of two\r
#\r
#Returns:\r
#\r
#  the largest integer that is both  a power of \r
#  two and less than Input\r
#\r
#--*/\r
ASM_PFX(GetPowerOfTwo):\r
    xorl    %eax, %eax\r
    movl    %eax, %edx\r
    movl    8(%esp), %ecx  # dword ptr Input[4]\r
    jecxz   _F\r
    bsrl    %ecx, %ecx\r
    btsl    %ecx, %edx\r
    jmp     _Exit\r
_F: \r
    movl    4(%esp), %ecx  # dword ptr Input[0]\r
    jecxz   _Exit\r
    bsrl    %ecx, %ecx\r
    btsl    %ecx, %eax\r
_Exit: \r
\r
    ret\r
#GetPowerOfTwo ENDP\r
\r