#------------------------------------------------------------------------------ # # Copyright (c) 2014, Intel Corporation. All rights reserved.
# This program and the accompanying materials # are licensed and made available under the terms and conditions of the BSD License # which accompanies this distribution. The full text of the license may be found at # http://opensource.org/licenses/bsd-license.php. # # THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, # WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED. # # Module Name: # # MathLShiftS64.S # # Abstract: # # 64-bit Math Worker Function. # Shifts a 64-bit signed value left by a certain number of bits. # #------------------------------------------------------------------------------ .686: .code: ASM_GLOBAL ASM_PFX(__ashldi3) #------------------------------------------------------------------------------ # # void __cdecl __ashldi3 (void) # #------------------------------------------------------------------------------ ASM_PFX(__ashldi3): # # Handle shifting of 64 or more bits (return 0) # cmpb $64, %cl jae ReturnZero # # Handle shifting of between 0 and 31 bits # cmpb $32, %cl jae More32 shld %cl, %eax, %edx shl %cl, %eax ret # # Handle shifting of between 32 and 63 bits # More32: movl %eax, %edx xor %eax, %eax and $31, %cl shl %cl, %edx ret ReturnZero: xor %eax, %eax xor %edx, %edx ret