BaseTools: Fix a cleanall issue.

[mirror_edk2.git] / CryptoPkg / Library / BaseCryptLib / SysCall / Ia32 / MathLShiftS64.S

#------------------------------------------------------------------------------\r
#\r
# Copyright (c) 2009 - 2010, 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
#   MathLShiftS64.S\r
#\r
# Abstract:\r
#\r
#   64-bit Math Worker Function.\r
#   Shifts a 64-bit signed value left by a certain number of bits.\r
#\r
#------------------------------------------------------------------------------\r
\r
    .686:\r
    .code:\r
\r
ASM_GLOBAL ASM_PFX(__ashldi3)\r
\r
#------------------------------------------------------------------------------\r
#\r
# void __cdecl __ashldi3 (void)\r
#\r
#------------------------------------------------------------------------------\r
ASM_PFX(__ashldi3):\r
    #\r
    # Handle shifting of 64 or more bits (return 0)\r
    #\r
    cmpb    $64, %cl\r
    jae     ReturnZero\r
\r
    #\r
    # Handle shifting of between 0 and 31 bits\r
    #\r
    cmpb    $32, %cl\r
    jae     More32\r
    shld    %cl, %eax, %edx\r
    shl     %cl, %eax\r
    ret\r
\r
    #\r
    # Handle shifting of between 32 and 63 bits\r
    #\r
More32:\r
    movl    %eax, %edx\r
    xor     %eax, %eax\r
    and     $31, %cl\r
    shl     %cl, %edx\r
    ret\r
\r
ReturnZero:\r
    xor     %eax, %eax\r
    xor     %edx, %edx\r
    ret\r