mpir/mpn/x86w/pentium4/sse2/sub_n.asm
brgladman 9c467c6415
2008-07-04 10:39:15 +00:00

83 lines
1.9 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 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
section .text
global ___gmpn_sub_nc
global ___gmpn_sub_n
%ifdef DLL
export ___gmpn_sub_nc
export ___gmpn_sub_n
%endif
align 8
___gmpn_sub_nc:
movd mm0,[20+esp]
jmp start_nc
align 8
___gmpn_sub_n:
pxor mm0,mm0
start_nc:
mov eax,[8+esp]
mov [8+esp],ebx
mov ebx,[12+esp]
mov edx,[4+esp]
mov ecx,[16+esp]
lea eax,[eax+ecx*4]
lea ebx,[ebx+ecx*4]
lea edx,[edx+ecx*4]
neg ecx
top:
movd mm1,[eax+ecx*4]
movd mm2,[ebx+ecx*4]
psubq mm1,mm2
psubq mm1,mm0
movd [edx+ecx*4],mm1
psrlq mm1,63
add ecx,1
jz done_mm1
movd mm0,[eax+ecx*4]
movd mm2,[ebx+ecx*4]
psubq mm0,mm2
psubq mm0,mm1
movd [edx+ecx*4],mm0
psrlq mm0,63
add ecx,1
jnz top
movd eax,mm0
mov ebx,[8+esp]
emms
ret
done_mm1:
movd eax,mm1
mov ebx,[8+esp]
emms
ret
end