mirror of
git://git.gnupg.org/gnupg.git
synced 2024-07-06 03:19:21 +02:00
186 lines
4.0 KiB
NASM
186 lines
4.0 KiB
NASM
|
|
; 80586 lshift
|
|
;
|
|
; 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_lshift
|
|
|
|
section .text
|
|
align 8
|
|
|
|
_mpihelp_lshift:
|
|
push edi
|
|
push esi
|
|
push ebx
|
|
push ebp
|
|
mov edi,[20+esp]
|
|
mov esi,[24+esp]
|
|
mov ebp,[28+esp]
|
|
mov ecx,[32+esp]
|
|
cmp ecx,1
|
|
jne short .1
|
|
lea eax,[4+esi]
|
|
cmp eax,edi
|
|
jnc .6
|
|
lea eax,[esi+ebp*4]
|
|
cmp edi,eax
|
|
jnc .6
|
|
|
|
.1: lea edi,[-4+edi+ebp*4]
|
|
lea esi,[-4+esi+ebp*4]
|
|
|
|
mov edx,[esi]
|
|
sub esi, 4
|
|
xor eax,eax
|
|
shld eax,edx,cl
|
|
push eax
|
|
dec ebp
|
|
push ebp
|
|
shr ebp,3
|
|
jz short .3
|
|
mov eax, [edi]
|
|
|
|
align 4
|
|
.2: mov eax,[-28+edi]
|
|
mov ebx,edx
|
|
mov eax,[esi]
|
|
mov edx,[-4+esi]
|
|
shld ebx,eax,cl
|
|
shld eax,edx,cl
|
|
mov [edi],ebx
|
|
mov [-4+edi],eax
|
|
mov ebx,[-8+esi]
|
|
mov eax,[-12+esi]
|
|
shld edx,ebx,cl
|
|
shld ebx,eax,cl
|
|
mov [-8+edi],edx
|
|
mov [-12+edi],ebx
|
|
mov edx,[-16+esi]
|
|
mov ebx,[-20+esi]
|
|
shld eax,edx,cl
|
|
shld edx,ebx,cl
|
|
mov [-16+edi],eax
|
|
mov [-20+edi],edx
|
|
mov eax,[-24+esi]
|
|
mov edx,[-28+esi]
|
|
shld ebx,eax,cl
|
|
shld eax,edx,cl
|
|
mov [-24+edi],ebx
|
|
mov [-28+edi],eax
|
|
sub esi,32
|
|
sub edi,32
|
|
dec ebp
|
|
jnz short .2
|
|
|
|
.3: pop ebp
|
|
and ebp,7
|
|
jz short .5
|
|
.4: mov eax,[esi]
|
|
shld edx,eax,cl
|
|
mov [edi],edx
|
|
mov edx,eax
|
|
sub esi,4
|
|
sub edi,4
|
|
dec ebp
|
|
jnz short .4
|
|
|
|
.5: shl edx,cl
|
|
mov [edi],edx
|
|
pop eax
|
|
pop ebp
|
|
pop ebx
|
|
pop esi
|
|
pop edi
|
|
ret
|
|
|
|
.6: mov edx,[esi]
|
|
add esi,4
|
|
dec ebp
|
|
push ebp
|
|
shr ebp,3
|
|
add edx,edx
|
|
inc ebp
|
|
dec ebp
|
|
jz short .8
|
|
mov eax, [edi]
|
|
|
|
align 4
|
|
.7: mov eax,[28+edi]
|
|
mov ebx,edx
|
|
mov eax,[esi]
|
|
mov edx,[4+esi]
|
|
adc eax,eax
|
|
mov [edi],ebx
|
|
adc edx,edx
|
|
mov [4+edi],eax
|
|
mov ebx,[8+esi]
|
|
mov eax,[12+esi]
|
|
adc ebx,ebx
|
|
mov [8+edi],edx
|
|
adc eax,eax
|
|
mov [12+edi],ebx
|
|
mov edx,[16+esi]
|
|
mov ebx,[20+esi]
|
|
adc edx,edx
|
|
mov [16+edi],eax
|
|
adc ebx,ebx
|
|
mov [20+edi],edx
|
|
mov eax,[24+esi]
|
|
mov edx,[28+esi]
|
|
adc eax,eax
|
|
mov [24+edi],ebx
|
|
adc edx,edx
|
|
mov [28+edi],eax
|
|
lea esi,[32+esi]
|
|
lea edi,[32+edi]
|
|
dec ebp
|
|
jnz short .7
|
|
|
|
.8: pop ebp
|
|
sbb eax,eax
|
|
and ebp,7
|
|
jz short .10
|
|
add eax,eax
|
|
.9: mov ebx,edx
|
|
mov edx,[esi]
|
|
adc edx,edx
|
|
mov [edi],ebx
|
|
lea esi,[4+esi]
|
|
lea edi,[4+edi]
|
|
dec ebp
|
|
jnz short .9
|
|
jmp short .11
|
|
.10:add eax,eax
|
|
.11:mov [edi],edx
|
|
sbb eax,eax
|
|
neg eax
|
|
|
|
pop ebp
|
|
pop ebx
|
|
pop esi
|
|
pop edi
|
|
ret
|
|
|
|
end
|