mpir/mpn/x86_64/nehalem/hamdist.as

67 lines
1.7 KiB
ActionScript
Raw Normal View History

; AMD64 mpn_hamdist
; Copyright 2009 Jason Moxham
; This file is part of the MPIR Library.
; The MPIR Library is free software; you can redistribute it and/or modify
; it under the terms of the GNU Lesser General Public License as published
; by the Free Software Foundation; either version 2.1 of the License, or (at
; your option) any later version.
; The MPIR Library is distributed in the hope that it will be useful, but
; WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
; or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
; License for more details.
; You should have received a copy of the GNU Lesser General Public License
; along with the MPIR Library; see the file COPYING.LIB. If not, write
; to the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
; Boston, MA 02110-1301, USA.
%include 'yasm_mac.inc'
BITS 64
GLOBAL_FUNC mpn_hamdist
xor eax, eax
sub rdx, 4
jc skiploop
align 16
loop1:
mov r8, [rdi+rdx*8+24]
mov r9, [rdi+rdx*8+16]
xor r8, [rsi+rdx*8+24]
popcnt r8, r8
add rax, r8
xor r9, [rsi+rdx*8+16]
popcnt r9, r9
add rax, r9
mov r10, [rdi+rdx*8+8]
mov r11, [rdi+rdx*8]
xor r10, [rsi+rdx*8+8]
popcnt r10, r10
add rax, r10
xor r11, [rsi+rdx*8]
popcnt r11, r11
add rax, r11
sub rdx, 4
jnc loop1
skiploop:
add rdx, 4
jz end
mov r8, [rdi+rdx*8-8]
xor r8, [rsi+rdx*8-8]
popcnt r8, r8
add rax, r8
dec rdx
jz end
mov r9, [rdi+rdx*8-8]
xor r9, [rsi+rdx*8-8]
popcnt r9, r9
add rax, r9
dec rdx
jz end
mov r10, [rdi+rdx*8-8]
xor r10, [rsi+rdx*8-8]
popcnt r10, r10
add rax, r10
end:
ret