mpir/mpn/x86w/p4/sse2/divexact_by3c.asm
2012-11-25 22:33:07 +00:00

69 lines
1.6 KiB
NASM

; Copyright 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 Library General Public License as
; published by the Free Software Foundation; either version 2 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
; Library General Public License for more details.
;
; You should have received a copy of the GNU Library 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
section .text
global ___gmpn_divexact_by3c
%ifdef DLL
export ___gmpn_divexact_by3c
%endif
align 16
___gmpn_divexact_by3c:
mov eax,[8+esp]
pxor mm0,mm0
movd mm1,[16+esp]
pcmpeqd mm6,mm6
movd mm7,[val]
mov edx,[4+esp]
psrlq mm6,32
mov ecx,[12+esp]
top:
movd mm2,[eax]
add eax,4
psubq mm2,mm0
psubq mm2,mm1
movq mm0,mm2
psrlq mm0,63
pmuludq mm2,mm7
movd [edx],mm2
add edx,4
movq mm1,mm6
pand mm1,mm2
pand mm2,mm6
psllq mm1,1
paddq mm1,mm2
psrlq mm1,32
sub ecx,1
jnz top
paddd mm0,mm1
movd eax,mm0
emms
ret
section .data
val:
dd 0xAAAAAAAB
end