Hi, I'm trying to get a fairly complex Win64 application to work with wine. I'm seeing crashes in FindNextFileW/FindNextFileA due to what looks like a 64 bit HANDLE value being truncated to 32 bits. I thought that I would employ winedbg to help me, but I can't get very far. I don't have any luck with winedbg even on a simple x64 Win32 app. For my simplified test, I used MSVC2005 to generate an x64 executable created from the standard MSVC2005 template Win32 application. This is a simple app that just creates an empty window. As simple as one could get for a Win32 test and it executes correctly when run as "./wine Test1.exe". When I try to execute this test app under winedbg, I get an assert failure: ./wine winedbg Test1.exe WineDbg starting on pid 001a ./programs/winedbg/memory.c:37: be_cpu_linearize: Assertion `addr->Mode == AddrModeFlat' failed. wine: Assertion failed at address 0x7fec2fa657c5 (thread 0009), starting debugger... Unhandled exception: assertion failed in 64-bit code (0x00007fec2fa657c5). Any ideas about why I can not use winedbg to run Win32 x64 code? Thanks, Peter Urbanec
On Wed, Aug 18, 2010 at 01:00:35AM +1000, Peter Urbanec wrote:
Hi,
I'm trying to get a fairly complex Win64 application to work with wine. I'm seeing crashes in FindNextFileW/FindNextFileA due to what looks like a 64 bit HANDLE value being truncated to 32 bits. I thought that I would employ winedbg to help me, but I can't get very far. I don't have any luck with winedbg even on a simple x64 Win32 app.
Check if your code uses "int" in its FindNextFile or findfirst things. I fixed ioquake3 for this for instance. The Wine code is correct as-is, but perhaps the Windows win64 code generates only handles with 32bit. Ciao, Marcus
On Tue, Aug 17, 2010 at 05:51:55PM +0200, Marcus Meissner wrote:
The Wine code is correct as-is, but perhaps the Windows win64 code generates only handles with 32bit.
That it very likely. There are windows #defines/inline functions that convert HANDLE <=> long. Remember there are some functions that return handles as long (not void *) Also, when the windows kernel generates a HANDLE it is unlikely to know whether the app is 32bit or 64bit - so will only generate 32bit values. I also remember reading somewhere that the kernel handle table is limited to 2^24 entries - even in 64bit mode. David -- David Laight: david(a)l8s.co.uk
On 18/08/10 01:51, Marcus Meissner wrote:
On Wed, Aug 18, 2010 at 01:00:35AM +1000, Peter Urbanec wrote:
I'm seeing crashes in FindNextFileW/FindNextFileA due to what looks like a 64 bit HANDLE value being truncated to 32 bits.
Check if your code uses "int" in its FindNextFile or findfirst things.
I had a good look at the wine source code as well as those parts of the application source code that I can get access to and it all looks good as far as correctly using HANDLE type to store HANDLE values. Unfortunately, the application in question also makes use of FLEXlm libraries from Macrovision and these binary blobs appear to be buggy. All the symptoms point to the FLEXlm code storing the 64-bit HANDLE value in a 32-bit int - this is evidenced by sign extension on some of the values. Of course, the initial cause and the issues with the debugger are essentially unrelated. I have sent some sample test binaries to Eric, to reproduce the debugger issue. The buggy Win64 application is another story. It looks like Win64 must most of the time return HANDLE values that fit within 31 bits, because from what I hear, Windows users go through thousands of invocations of this app without seeing any issues. I wonder if there is a way of making wine allocate the memory for the object pointed to by the HANDLE somewhere in the lower part of the address space. That ought to mitigate this particular application bug and bring the compatibility a little closer to what's observed under Win64.
the assertion `addr->Mode == AddrModeFlat' failed is likely an address returned by dbghelp which is not properly initialized. Could you send me off line the .exe (and associated DLL if any) so that I can check it TIA 2010/8/17 Peter Urbanec <winehq.org(a)urbanec.net>
Hi,
I'm trying to get a fairly complex Win64 application to work with wine. I'm seeing crashes in FindNextFileW/FindNextFileA due to what looks like a 64 bit HANDLE value being truncated to 32 bits. I thought that I would employ winedbg to help me, but I can't get very far. I don't have any luck with winedbg even on a simple x64 Win32 app.
For my simplified test, I used MSVC2005 to generate an x64 executable created from the standard MSVC2005 template Win32 application. This is a simple app that just creates an empty window. As simple as one could get for a Win32 test and it executes correctly when run as "./wine Test1.exe". When I try to execute this test app under winedbg, I get an assert failure:
./wine winedbg Test1.exe WineDbg starting on pid 001a ./programs/winedbg/memory.c:37: be_cpu_linearize: Assertion `addr->Mode == AddrModeFlat' failed. wine: Assertion failed at address 0x7fec2fa657c5 (thread 0009), starting debugger... Unhandled exception: assertion failed in 64-bit code (0x00007fec2fa657c5).
Any ideas about why I can not use winedbg to run Win32 x64 code?
Thanks,
Peter Urbanec
-- -- Eric Pouech
participants (4)
-
David Laight -
Eric Pouech -
Marcus Meissner -
Peter Urbanec