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No Execution Incompatibility of D5 and D6 + Workaround

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Carsten Haerle

Feb 28, 2006; 10:19am

No Execution Incompatibility of D5 and D6 + Workaround

62 posts

Dolphin XP 5.1 and Dolphin X6 are both incompatible with hardware DEP
(Data Execution Protection) of Windows XP2 and Windows 2003 Server (32
and 64 bit). AMD Opteron and newer Intel processors have hardware
support for DEP.

If you install Dolphin on a Windows 2003 Opteron system and start it
the first time, it immediately crashes with the following Windows
exception:

Dolphin XP5.1: Invalid Access to memory location. Writing 0x76B5BA4,
IP0x76B5BA4
Dolphin X6: Invalid Access to memory location. Writing 0xA4170F0,
IP0xA4170F0

A workaround is to disable DEP unter Control Panel/System but please
fix this Andy.

Regards

Carsten Härle

Andy Bower-3

Mar 01, 2006; 12:11pm

Re: No Execution Incompatibility of D5 and D6 + Workaround

510 posts

Carsten,

> Dolphin XP 5.1 and Dolphin X6 are both incompatible with hardware DEP
> (Data Execution Protection) of Windows XP2 and Windows 2003 Server (32
> and 64 bit). AMD Opteron and newer Intel processors have hardware
> support for DEP.
>
> If you install Dolphin on a Windows 2003 Opteron system and start it
> the first time, it immediately crashes with the following Windows
> exception:
>
> Dolphin XP5.1: Invalid Access to memory location. Writing 0x76B5BA4,
> IP0x76B5BA4
> Dolphin X6: Invalid Access to memory location. Writing 0xA4170F0,
> IP0xA4170F0
>
> A workaround is to disable DEP unter Control Panel/System but please
> fix this Andy.

... [show rest of quote]

This should be fixed in Dolphin 6.02; which version are you running?
We don't have any intention of retrofitting the fix to D5.1, I'm afraid.

Best regards,

--
Andy Bower
Dolphin Support
www.object-arts.com

Steve Alan Waring

Mar 03, 2006; 2:20am

Re: No Execution Incompatibility of D5 and D6 + Workaround

335 posts

Hi Andy,

> We don't have any intention of retrofitting the fix to D5.1, I'm afraid.

Can you give an estimate of how many support hours it would take for a
D5 fix?

Thanks,
Steve
--
Steve Waring

Carsten Haerle

Mar 06, 2006; 4:44pm

Re: No Execution Incompatibility of D5 and D6 + Workaround

62 posts

In reply to this post by Andy Bower-3

In 6.02 the problem has been fixed.

Blair McGlashan-4

Mar 07, 2006; 7:49pm

Re: No Execution Incompatibility of D5 and D6 + Workaround

101 posts

In reply to this post by Steve Alan Waring

<[hidden email]> wrote in message
news:[hidden email]...
> Hi Andy,
>
>> We don't have any intention of retrofitting the fix to D5.1, I'm afraid.
>
> Can you give an estimate of how many support hours it would take for a
> D5 fix?
>

Around 1 day. It might be as little as four or five hours, but that depends
on whether a VM change is needed. The main problem is actually in the
ExternalCallback class and can be fixed entirely in Smalltalk, although it's
a bit low level.

Regards

Blair