+++ /dev/null
-#/*++\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
-# LShiftU64.c\r
-#\r
-#Abstract:\r
-#\r
-# 64-bit left shift function for IA-32\r
-#\r
-#--*/\r
-#\r
-#include "EfiBind.h"\r
-#---------------------------------------------------------------------------\r
- .686: \r
- #.MODEL flat,C\r
- .code: \r
-\r
-#---------------------------------------------------------------------------\r
-.globl ASM_PFX(LShiftU64)\r
-#\r
-#UINT64\r
-#LShiftU64 (\r
-# IN UINT64 Operand,\r
-# IN UINTN Count\r
-# )\r
-#/*++\r
-#\r
-#Routine Description:\r
-# \r
-# This routine allows a 64 bit value to be left shifted by 32 bits and \r
-# returns the shifted value.\r
-# Count is valid up 63. (Only Bits 0-5 is valid for Count)\r
-#\r
-#Arguments:\r
-#\r
-# Operand - Value to be shifted\r
-# Count - Number of times to shift left.\r
-# \r
-#Returns:\r
-#\r
-# Value shifted left identified by the Count.\r
-#\r
-#--*/\r
-ASM_PFX(LShiftU64):\r
-\r
- movl 4(%esp), %eax # dword ptr Operand[0]\r
- movl 8(%esp), %edx # dword ptr Operand[4]\r
-\r
- #\r
- # CL is valid from 0 - 31. shld will move EDX:EAX by CL times but EAX is not touched\r
- # For CL of 32 - 63, it will be shifted 0 - 31 so we will move eax to edx later. \r
- #\r
- movl 0xC(%esp), %ecx # Count\r
- andl $63, %ecx\r
- shld %cl, %eax, %edx\r
- shlb %cl, %eax\r
-\r
- #\r
- # Since Count is 32 - 63, eax will have been shifted by 0 - 31 \r
- # If shifted by 32 or more, set lower 32 bits to zero.\r
- #\r
- cmpl $32, %ecx\r
- jc _LShiftU64_Done\r
-\r
- movl %eax, %edx\r
- xorl %eax, %eax\r
-\r
-_LShiftU64_Done: \r
-\r
- ret\r
-#LShiftU64 ENDP\r
-\r