[Bug 28089] exception handling code touches stack for exceptions handled by the debugger

[wine-bugs at winehq.org]

https://bugs.winehq.org/show_bug.cgi?id=28089

Sebastian Lackner <sebastian at fds-team.de> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |sebastian at fds-team.de

--- Comment #5 from Sebastian Lackner <sebastian at fds-team.de> ---
(In reply to Anastasius Focht from comment #4)
> Hello folks,
> 
> revisiting, still present.
> 
> Found another example, making excessive use of this pattern: Gothic II (lots
> of obfuscated code)
> 
> Download: http://www.fileplanet.com/151400/150000/fileinfo/Gothic-II-Demo-
> 
> --- snip ---
> ...
> 2BC4036C  8B85 52AC5000   MOV EAX,DWORD PTR SS:[EBP+Gothic2.50AC52]
> 2BC40372  8BA5 62AC5000   MOV ESP,DWORD PTR SS:[EBP+Gothic2.50AC62]
> 2BC40378  894424 1C       MOV DWORD PTR SS:[ESP+1C],EAX
> 2BC4037C  64:67:8F06 0000 POP DWORD PTR FS:[SMALL 0]
> 2BC40382  83C4 04         ADD ESP,4
> 2BC40385  61              POPAD
> 2BC40386  83C4 08         ADD ESP,8
> 2BC40389  FF6424 F8       JMP DWORD PTR SS:[ESP-8]
> ...
> --- snip ---
> 
> $ sha1sum gothic2-demo-setup.exe 
> 3f1ff6d9b1d1ccdd5032caf349e7c0d79c6a9d24  gothic2-demo-setup.exe
> 
> $ du -sh gothic2-demo-setup.exe 
> 381M	gothic2-demo-setup.exe
> 
> $ wine --version
> wine-1.7.35-108-g512db44
> 
> Regards

Since this issue is basically a conceptual design flaw in Wine it is a bit
difficult to fix everywhere. As a temporary solution I was thinking about
adding a red zone of 128 byte below esp, similar to x86_64 calling convertions.
Do you think this would have any disadvantages? I think it should be sufficient
for most apps out there.

-- 
Do not reply to this email, post in Bugzilla using the
above URL to reply.
You are receiving this mail because:
You are watching all bug changes.