143 lines
3.1 KiB
NASM
143 lines
3.1 KiB
NASM
|
|
; Copyright 2000, 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
|
|
|
|
%define REG_AAAAAAAAAAAAAAAA mm7
|
|
%define REG_3333333333333333 mm6
|
|
%define REG_0F0F0F0F0F0F0F0F mm5
|
|
%define REG_0000000000000000 mm4
|
|
|
|
%ifndef PIC
|
|
section .data
|
|
align 8
|
|
|
|
Lrodata_AAAAAAAAAAAAAAAA:
|
|
dd 0AAAAAAAAh
|
|
dd 0AAAAAAAAh
|
|
|
|
Lrodata_3333333333333333:
|
|
dd 033333333h
|
|
dd 033333333h
|
|
|
|
Lrodata_0F0F0F0F0F0F0F0F:
|
|
dd 00F0F0F0Fh
|
|
dd 00F0F0F0Fh
|
|
%endif
|
|
|
|
%macro ph_fun 3
|
|
|
|
align 32
|
|
global %1%2
|
|
|
|
%ifdef DLL
|
|
export %1%2
|
|
%endif
|
|
|
|
%1%2:
|
|
mov ecx,[PARAM_SIZE]
|
|
%ifdef PIC
|
|
mov eax,0xAAAAAAAA
|
|
mov edx,0x33333333
|
|
movd mm7,eax
|
|
movd mm6,edx
|
|
mov eax,0x0F0F0F0F
|
|
punpckldq mm7,mm7
|
|
punpckldq mm6,mm6
|
|
movd mm5,eax
|
|
movd mm4,edx
|
|
punpckldq mm5,mm5
|
|
%else
|
|
movq mm7,[Lrodata_AAAAAAAAAAAAAAAA]
|
|
movq mm6,[Lrodata_3333333333333333]
|
|
movq mm5,[Lrodata_0F0F0F0F0F0F0F0F]
|
|
%endif
|
|
pxor mm4,mm4
|
|
mov eax,[PARAM_SRC]
|
|
%if %3 == 1
|
|
mov edx,[PARAM_SRC2]
|
|
%endif
|
|
pxor mm2,mm2
|
|
shr ecx,1
|
|
jnc %%Ltop
|
|
movd mm1,[eax+ecx*8]
|
|
%if %3 == 1
|
|
movd mm0,[edx+ecx*8]
|
|
pxor mm1,mm0
|
|
%endif
|
|
or ecx,ecx
|
|
jmp %%Lloaded
|
|
|
|
; eax src
|
|
; ebx
|
|
; ecx counter,qwords,decrementing
|
|
; edx [hamdist] src2
|
|
;
|
|
; mm0 (scratch)
|
|
; mm1 (scratch)
|
|
; mm2 total (low dword)
|
|
; mm3
|
|
; mm4 \
|
|
; mm5 | special constants
|
|
; mm6 |
|
|
; mm7 /
|
|
|
|
align 16
|
|
%%Ltop:
|
|
movq mm1,[eax+ecx*8-8]
|
|
%if %3 == 1
|
|
pxor mm1,[edx+ecx*8-8]
|
|
%endif
|
|
dec ecx
|
|
%%Lloaded:
|
|
movq mm0,mm1
|
|
pand mm1,REG_AAAAAAAAAAAAAAAA
|
|
psrlq mm1,1
|
|
psubd mm0,mm1 ; bit pairs
|
|
movq mm1,mm0
|
|
psrlq mm0,2
|
|
pand mm0,REG_3333333333333333
|
|
pand mm1,REG_3333333333333333
|
|
paddd mm0,mm1 ; nibbles
|
|
movq mm1,mm0
|
|
psrlq mm0,4
|
|
pand mm0,REG_0F0F0F0F0F0F0F0F
|
|
pand mm1,REG_0F0F0F0F0F0F0F0F
|
|
paddd mm0,mm1 ; bytes
|
|
psadbw mm0,mm4
|
|
paddd mm2,mm0 ; add to total
|
|
jnz %%Ltop
|
|
movd eax,mm2
|
|
emms
|
|
ret
|
|
%endmacro
|
|
|
|
section .text
|
|
|
|
%define PARAM_SIZE esp+frame+12
|
|
%define PARAM_SRC2 esp+frame+8
|
|
%define PARAM_SRC esp+frame+4
|
|
%define frame 0
|
|
|
|
; global ___gmpn_hamdist
|
|
ph_fun ___g,mpn_hamdist,1
|
|
|
|
end
|