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; i80586 submul_1 -- Multiply a limb vector with a limb and add
; the result to a second limb vector.
;
; Copyright (C) 1992, 1994, 1995, 1996, 1998,
; 2001 Free Software Foundation, Inc.
;
; This file is part of GnuPG.
;
; GnuPG is free software; you can redistribute it and/or modify
; it under the terms of the GNU General Public License as published by
; the Free Software Foundation; either version 2 of the License, or
; (at your option) any later version.
;
; GnuPG 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 General Public License for more details.
;
; You should have received a copy of the GNU General Public License
; along with this program; if not, write to the Free Software
; Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
;
; Modified versions of the GPG i586 assembler for use with NASM. This
; file is part of a native port of Gnu PG for use with Microsoft Visual
; Studio .net. Ported by Brian Gladman <[email protected]> March 2002.
global _mpihelp_submul_1
%define res_ptr edi
%define s1_ptr esi
%define size ecx
%define s2_limb ebp
section .text
align 8
_mpihelp_submul_1:
push edi
push esi
push ebx
push ebp
mov res_ptr,[esp+20]
mov s1_ptr,[esp+24]
mov size,[esp+28]
mov s2_limb,[esp+32]
lea res_ptr,[res_ptr+size*4]
lea s1_ptr,[s1_ptr+size*4]
neg size
xor ebx,ebx
align 8
.1: adc ebx,0
mov eax,[s1_ptr+size*4]
mul s2_limb
add eax,ebx
mov ebx,[res_ptr+size*4]
adc edx,0
sub ebx,eax
mov [res_ptr+size*4],ebx
inc size
mov ebx,edx
jnz short .1
adc ebx,0
mov eax,ebx
pop ebp
pop ebx
pop esi
pop edi
ret
end
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