2012-11-25 17:13:44 -05:00
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; Copyright 2000, 2001, 2002 Free Software Foundation, Inc.
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;
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; This file is part of the GNU MP Library.
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;
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; The GNU MP Library is free software; you can redistribute it and/or
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; modify it under the terms of the GNU Lesser General Public License as
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; published by the Free Software Foundation; either version 2.1 of the
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; License, or (at your option) any later version.
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;
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; The GNU MP Library is distributed in the hope that it will be useful,
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; but WITHOUT ANY WARRANTY; without even the implied warranty of
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; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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; Lesser General Public License for more details.
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;
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; You should have received a copy of the GNU Lesser General Public
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; License along with the GNU MP Library; see the file COPYING.LIB. If
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; not, write to the Free Software Foundation, Inc., 59 Temple Place -
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; Suite 330, Boston, MA 02111-1307, USA.
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;
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; Translation of AT&T syntax code by Brian Gladman
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%macro ph_fun 1
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%ifdef PIC
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mov edx,0xAAAAAAAA
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movd mm7,edx
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punpckldq mm7,mm7
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mov edx,0x33333333
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movd mm6,edx
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punpckldq mm6,mm6
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mov edx,0x0F0F0F0F
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movd mm5,edx
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punpckldq mm5,mm5
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%else
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movq mm7,[L_AA]
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movq mm6,[L_33]
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movq mm5,[L_0F]
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%endif
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mov ecx,[esp+PARAM_SIZE]
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mov eax,[esp+PARAM_SRC]
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%if %1 == 1
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mov edx,[esp+PARAM_SRC2]
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%endif
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pxor mm4,mm4
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pxor mm0,mm0
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sub ecx,1
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ja %%L_top
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%%L_last:
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movd mm1,[eax+ecx*4]
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%if %1 == 1
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movd mm2,[edx+ecx*4]
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pxor mm1,mm2
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%endif
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jmp %%L_loaded
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%%L_top:
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movd mm1,[eax]
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movd mm2,[eax+4]
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punpckldq mm1,mm2
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add eax,8
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%if %1 == 1
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movd mm2,[edx]
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movd mm3,[edx+4]
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punpckldq mm2,mm3
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pxor mm1,mm2
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add edx,8
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%endif
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%%L_loaded:
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movq mm2,mm7
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pand mm2,mm1
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psrlq mm2,1
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psubd mm1,mm2
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movq mm2,mm6
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pand mm2,mm1
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psrlq mm1,2
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pand mm1,mm6
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paddd mm1,mm2
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movq mm2,mm5
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pand mm2,mm1
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psrlq mm1,4
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pand mm1,mm5
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paddd mm1,mm2
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psadbw mm1,mm4
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paddd mm0,mm1
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sub ecx,2
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jg %%L_top
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jz %%L_last
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movd eax,mm0
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emms
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ret
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%endmacro
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%ifndef PIC
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data
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align 8
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L_AA: dq 0xAAAAAAAAAAAAAAAA
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L_33: dq 0x3333333333333333
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L_0F: dq 0x0F0F0F0F0F0F0F0F
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%endif
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section .text
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%define PARAM_SIZE 12
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%define PARAM_SRC2 8
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%define PARAM_SRC 4
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global ___gmpn_hamdist
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%ifdef DLL
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export ___gmpn_hamdist
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%endif
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align 16
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___gmpn_hamdist:
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ph_fun 1
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end
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