mirror of
git://git.gnupg.org/gnupg.git
synced 2024-07-06 03:19:21 +02:00
115 lines
2.8 KiB
NASM
115 lines
2.8 KiB
NASM
|
|
; i80586 sub_n -- Sub two limb vectors of the same length > 0 and store
|
|
; sum in a third 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 <brg@gladman.uk.net> March 2002.
|
|
|
|
global _mpihelp_sub_n
|
|
|
|
section .text
|
|
align 8
|
|
|
|
_mpihelp_sub_n:
|
|
push edi
|
|
push esi
|
|
push ebx
|
|
push ebp
|
|
mov edi,[20+esp]
|
|
mov esi,[24+esp]
|
|
mov ebp,[28+esp]
|
|
mov ecx,[32+esp]
|
|
mov ebx,[ebp]
|
|
dec ecx
|
|
mov edx,ecx
|
|
shr ecx,3
|
|
and edx,7
|
|
test ecx,ecx
|
|
jz short .2
|
|
push edx
|
|
|
|
align 8
|
|
.1: mov eax,[28+edi]
|
|
lea edi,[32+edi]
|
|
mov eax,[esi]
|
|
mov edx,[4+esi]
|
|
sbb eax,ebx
|
|
mov ebx,[4+ebp]
|
|
sbb edx,ebx
|
|
mov ebx,[8+ebp]
|
|
mov [-32+edi],eax
|
|
mov [-28+edi],edx
|
|
mov eax,[8+esi]
|
|
mov edx,[12+esi]
|
|
sbb eax,ebx
|
|
mov ebx,[12+ebp]
|
|
sbb edx,ebx
|
|
mov ebx,[16+ebp]
|
|
mov [-24+edi],eax
|
|
mov [-20+edi],edx
|
|
mov eax,[16+esi]
|
|
mov edx,[20+esi]
|
|
sbb eax,ebx
|
|
mov ebx,[20+ebp]
|
|
sbb edx,ebx
|
|
mov ebx,[24+ebp]
|
|
mov [-16+edi],eax
|
|
mov [-12+edi],edx
|
|
mov eax,[24+esi]
|
|
mov edx,[28+esi]
|
|
sbb eax,ebx
|
|
mov ebx,[28+ebp]
|
|
sbb edx,ebx
|
|
mov ebx,[32+ebp]
|
|
mov [-8+edi],eax
|
|
mov [-4+edi],edx
|
|
lea esi,[32+esi]
|
|
lea ebp,[32+ebp]
|
|
dec ecx
|
|
jnz short .1
|
|
pop edx
|
|
.2: dec edx
|
|
js short .4
|
|
inc edx
|
|
.3: lea edi,[4+edi]
|
|
mov eax,[esi]
|
|
sbb eax,ebx
|
|
mov ebx,[4+ebp]
|
|
mov [-4+edi],eax
|
|
lea esi,[4+esi]
|
|
lea ebp,[4+ebp]
|
|
dec edx
|
|
jnz short .3
|
|
.4: mov eax,[esi]
|
|
sbb eax,ebx
|
|
mov [edi],eax
|
|
sbb eax,eax
|
|
neg eax
|
|
pop ebp
|
|
pop ebx
|
|
pop esi
|
|
pop edi
|
|
ret
|
|
|
|
end
|