75 lines
2.0 KiB
NASM
75 lines
2.0 KiB
NASM
;
|
|
; Copyright 2008 Jason Moxham
|
|
;
|
|
; Windows Conversion Copyright 2008 Brian Gladman
|
|
;
|
|
; 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.
|
|
|
|
; mp_limb_t mpn_hamdist(mp_ptr, mp_ptr, mp_size_t)
|
|
; rax rdi, rdx, rdx
|
|
; rax rcx, rdx, r8
|
|
|
|
%include "yasm_mac.inc"
|
|
|
|
CPU SSE4.2
|
|
BITS 64
|
|
|
|
FRAME_PROC mpn_hamdist, 0, rdi
|
|
xor eax, eax
|
|
lea rdi, [rcx+r8*8-24]
|
|
lea rdx, [rdx+r8*8-24]
|
|
mov rcx, 3
|
|
sub rcx, r8
|
|
jnc .1
|
|
xalign 16
|
|
.0: mov r8, [rdi+rcx*8]
|
|
mov r9, [rdi+rcx*8+8]
|
|
xor r8, [rdx+rcx*8]
|
|
mov r10, [rdi+rcx*8+16]
|
|
popcnt r8, r8
|
|
xor r9, [rdx+rcx*8+8]
|
|
xor r10, [rdx+rcx*8+16]
|
|
popcnt r9, r9
|
|
mov r11, [rdi+rcx*8+24]
|
|
add rax, r8
|
|
popcnt r10, r10
|
|
xor r11, [rdx+rcx*8+24]
|
|
add rax, r9
|
|
popcnt r11, r11
|
|
add rax, r10
|
|
add rax, r11
|
|
add rcx, 4
|
|
jnc .0
|
|
.1:
|
|
cmp rcx, 2
|
|
ja .5
|
|
je .4
|
|
jp .3
|
|
.2: mov r8, [rdi]
|
|
xor r8, [rdx]
|
|
popcnt r8, r8
|
|
add rax, r8
|
|
.3: mov r8, [rdi+8]
|
|
xor r8, [rdx+8]
|
|
popcnt r8, r8
|
|
add rax, r8
|
|
.4: mov r8, [rdi+16]
|
|
xor r8, [rdx+16]
|
|
popcnt r8, r8
|
|
add rax, r8
|
|
.5: END_PROC rdi
|
|
|
|
end
|