mpir/mpn/x86w/p4/hamdist.asm
2012-11-25 22:33:07 +00:00

117 lines
2.4 KiB
NASM

; Copyright 2000, 2001, 2002 Free Software Foundation, Inc.
;
; This file is part of the GNU MP Library.
;
; The GNU MP 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 GNU MP 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 GNU MP Library; see the file COPYING.LIB. If
; not, write to the Free Software Foundation, Inc., 59 Temple Place -
; Suite 330, Boston, MA 02111-1307, USA.
;
; Translation of AT&T syntax code by Brian Gladman
%macro ph_fun 1
%ifdef PIC
mov edx,0xAAAAAAAA
movd mm7,edx
punpckldq mm7,mm7
mov edx,0x33333333
movd mm6,edx
punpckldq mm6,mm6
mov edx,0x0F0F0F0F
movd mm5,edx
punpckldq mm5,mm5
%else
movq mm7,[L_AA]
movq mm6,[L_33]
movq mm5,[L_0F]
%endif
mov ecx,[esp+PARAM_SIZE]
mov eax,[esp+PARAM_SRC]
%if %1 == 1
mov edx,[esp+PARAM_SRC2]
%endif
pxor mm4,mm4
pxor mm0,mm0
sub ecx,1
ja %%L_top
%%L_last:
movd mm1,[eax+ecx*4]
%if %1 == 1
movd mm2,[edx+ecx*4]
pxor mm1,mm2
%endif
jmp %%L_loaded
%%L_top:
movd mm1,[eax]
movd mm2,[eax+4]
punpckldq mm1,mm2
add eax,8
%if %1 == 1
movd mm2,[edx]
movd mm3,[edx+4]
punpckldq mm2,mm3
pxor mm1,mm2
add edx,8
%endif
%%L_loaded:
movq mm2,mm7
pand mm2,mm1
psrlq mm2,1
psubd mm1,mm2
movq mm2,mm6
pand mm2,mm1
psrlq mm1,2
pand mm1,mm6
paddd mm1,mm2
movq mm2,mm5
pand mm2,mm1
psrlq mm1,4
pand mm1,mm5
paddd mm1,mm2
psadbw mm1,mm4
paddd mm0,mm1
sub ecx,2
jg %%L_top
jz %%L_last
movd eax,mm0
emms
ret
%endmacro
%ifndef PIC
data
align 8
L_AA: dq 0xAAAAAAAAAAAAAAAA
L_33: dq 0x3333333333333333
L_0F: dq 0x0F0F0F0F0F0F0F0F
%endif
section .text
%define PARAM_SIZE 12
%define PARAM_SRC2 8
%define PARAM_SRC 4
global ___gmpn_hamdist
%ifdef DLL
export ___gmpn_hamdist
%endif
align 16
___gmpn_hamdist:
ph_fun 1
end