Dear Sirs:
There is a problem with windows .asm modules in version 0.9.8a when runing
on XP x64 under WOW64 in a .dll.
The openssl .asm logic pages are marked as non-executable so the
application faults. This is not a problem
with .asm logic in 0.9.7d. A quick check will show the segment statement
generated by crypto\perlasm\x86ms.pl
has changed (and not documented in CHANGES). I reversed the changes as
shown below and now the .asm
runs without problem on XP pro, XP x64, and Vista 64.
Some details about our tools and tests:
- the application was compiled and linked with Microsoft Visual Studio 6
on XP pro.
- the link map for a .dll or .exe show the openssl .asm logic in segment 4
(ie address 0004:....) and class DATA.
- an .exe with openssl .asm runs without fault on XP x64 only .asm logic
in a .dll has the non-executable page problem.
crypto\perlasm\x86ms.pl changes - remove .model and change _TEXT$ to _TEXT
TITLE $file.asm
.386
< .model FLAT
-> ;.model FLAT XPx64
EOF
push(@out,$tmp);
}
sub main'function_begin
{
local($func,$extra)[EMAIL PROTECTED];
push(@labels,$func);
local($tmp)=<<"EOF";
< _TEXT\$ SEGMENT PAGE 'CODE'
-> _TEXT SEGMENT PAGE 'CODE' ;XPx64
PUBLIC _$func
$extra
_$func PROC NEAR
push ebp
push ebx
push esi
push edi
EOF
push(@out,$tmp);
$stack=20;
}
sub main'function_begin_B
{
local($func,$extra)[EMAIL PROTECTED];
local($tmp)=<<"EOF";
< _TEXT\$ SEGMENT PAGE 'CODE'
-> _TEXT SEGMENT PAGE 'CODE' ;XPx64
PUBLIC _$func
$extra
_$func PROC NEAR
EOF
push(@out,$tmp);
$stack=4;
}
sub main'function_end
{
local($func)[EMAIL PROTECTED];
local($tmp)=<<"EOF";
pop edi
pop esi
pop ebx
pop ebp
ret
_$func ENDP
< _TEXT\$ ENDS
-> _TEXT ENDS ;XPx64
EOF
push(@out,$tmp);
$stack=0;
%label=();
}
sub main'function_end_B
{
local($func)[EMAIL PROTECTED];
local($tmp)=<<"EOF";
_$func ENDP
< _TEXT\$ ENDS
-> _TEXT ENDS ;XPx64
EOF
push(@out,$tmp);
$stack=0;
%label=();
}
David Elm
Software Developer
Storage Management
Beta Systems Software of Canada Inc.
Business Line DCI
Suite 600, 736 Eighth Ave SW
Calgary, Alberta, Canada, T2P 1H4
Phone: (403) 231 - 9879
Fax: (403) 266 - 6767
[EMAIL PROTECTED]
www.betasystems.com
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