- Wine-Devel - list.winehq.org

symbol hiding - with gcc -fvisibility
by Guido Draheim May 21, 2004

May 21, 2004

sorry, just saw the note on WWN. I did hope that there would be someone to point to the gcc visibility stuff already - but it seems that people are more concerned to exchange their believes and politics rather showing off some engineering stuff. * preface: it's not in the file format - it's in the tools. The name ELF stands for Extensible Linker Format, it allows to invent all kind of new sections, and expand the symbol table with many interesting attributes that can be checked up by a toolchain. Well, "IF" the tools check for them. * gcc -fvisibility The gcc -fvisibility exists since 3.1 and is supported by binutils. If you read up some web reports, it seems to have been invented for hiding stuff not quite unlike what the original poster wanted. The icc supports all -fvisibility options as well afair. * the real problem traditionally, one can kill local systems which are usable within one file only, i.e. "static". Pretty 20year old unix stuff. The other symbols are referencable outside (in .o) and the standard shard linker will put all of them into the shared library symbol export table. - But now we want two different symbol flavours, one exported to the same library, the others for the rest of the world. Perhaps use a linker script to decide later about symbol visibility. * example solution gcc supports the universal attribute syntax, and it does now know about more symbol flavours as to their visibility. Probably you want to have "hidden". Attached are two simple test*.c files and a makefile. The final sharedlib symbol table contains only test3 after stripping. - using a linker script instead of in-source __attribute__ is left as an excercise to the reader. * more hints search freshmeat - there are ELF tools to staticlink, to obfuscate, and more. It's all in the tools. There is only one problem with opensource: many programmers do not need to hide symbols to the extreme, so they did not write such tools so far. Not yet. There are some real ELF-educated people out there - hire one, and let him write the tool you need. The ELF format is well-defined and simple enough to allow everything and quite easily. Do ut des. -- cheers, guido http://google.de/search?q=guidod extern void test2(void); void __attribute__((visibility("hidden"))) test1(void) { test2(); //__attribute__((visiblity("internal"))) } extern void test1(void); void __attribute__((visibility("hidden"))) test2(void) { test1(); } void test3(void) { test2(); } test.so : test1.c test2.c Makefile gcc -Wl,-x -shared -o $@ test1.c test2.c strip -x $@ objdump -t $@ | grep "test[123]" gcc -Wl,-x -shared -o test.so test1.c test2.c strip -x test.so objdump -t test.so | grep "test[123]" 00000631 g F .text 0000000d test3

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WINE filesystem idea
by Jonathan Wilson May 21, 2004

May 21, 2004

Basicly, when emulated windows version is set to NT4, 2000, XP or 2003, WINE should pretend to apps that its running on NTFS. If running as 95,98 or ME, it should pretend to apps that its running on FAT32. Or better yet, add an option for this (with my suggestions being the default) Just an idea :)

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Wine on AMD64 (heap problem)
by Maurizio Monge May 21, 2004

May 21, 2004

Hello, i compiled wine cvs on my amd64 without many problem (i had to set PATH to point to a directory with wrappers for gcc,ld and as that would call respectively "gcc -m32","ld -melf_i386","as --32", it would be nice if wine would support natively this or would support LDFLAGS=-melf_i368.., but this is not the point). When i started wine i got: wine: failed to create the process heap The same wine executable was running ok on my 32bits distro. I read that this happens on fedora2 too because of nx stack, and i think that, even if i do not have SeLinux installed, the stack is not executable by default on amd64... Do you have any idea of how this could be fixed/hacked? Thanx Maurizio I am not subscribed to wine-devel, so please CC monge(at)sns(dot)it

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Regression with Blizzard patching software
by Aneurin Price May 21, 2004

May 21, 2004

I recently discovered that the software used by Blizzard to patch Diablo 2 and Warcraft 3 (and possibly the same version used with other games), has stopped working. It starts do do something, but before actually applying the patch it crashes out, with the final error message being: Unhandled exception: page fault on write access to 0x00000000 in 32-bit code (0x408ba2e0). In 32-bit mode. 0x408ba2e0 (DIALOG_CreateIndirect+0x300 [dialog.c:636] in USER32.DLL): movl $0x0,0x0(%eax) 139 return TRUE; Wine-dbg>WineDbg terminated on pid a The whole of the scrollback buffer is filled with the usual messages about loading debug information. I could run it with script to see what's happening before that, but I don't think it's really necessary: Since this *used* to work, I've gone through some CVS regression testing and determined that it stopped working sometime between 2004-04-19 22:00:00 and 2004-04-19 22:03:00 CST, so I'm willing to bet that this is what changed: http://www.winehq.org/hypermail/wine-cvs/2004/04/0272.html Since I have no understanding of what's going on here I really coudn't suggest a fix, but I'm happy to provide any further information I can and thought this would be worth pointing out. Aneurin Price

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Re: loader fix for dbghelp
by Alexandre Julliard May 20, 2004

May 20, 2004

Eric Pouech <pouech-eric(a)wanadoo.fr> writes: > I fixed that by sending (in ntdll loader code) the DLL load event a > bit later in the loading processus, when we're out of the dlopen call. This will break dlls that are loading implicitly by ELF loading. That stuff really has to be done in the constructor. -- Alexandre Julliard julliard(a)winehq.org

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Re: Empty (Stubs in spec only) d3drm
by Ivan Leo Murray-Smith May 20, 2004

May 20, 2004

What app do you know about that uses this dll and works with the native version? All the DX7SDK samples fail with the native version. Ivan.

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Fedora Core
by gslink May 20, 2004

May 20, 2004

I notice that a problem has been detected with Fedora Core 2 but has anyone checked Core 3? That is the one in directory 1.92.

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x - D3D Errors while starting
by Florian Goth May 20, 2004

May 20, 2004

I tried to start The Game x and it bailed out with a lot of fixme's and some errors like these: err:ddraw:set_render_state Unhandled dwRenderStateType D3DRENDERSTATE_ZVISIBLE (0000001e) value : 00000000 ! The game uses DiectX6 There's a demo available at http://www.egosoft.com/x/download/index.htm This is the complete log: ixme:ddraw:Main_DirectDraw_SetCooperativeLevel (0x40434ab0)->(00020022,00000013) fixme:x11drv:X11DRV_desktop_SetCurrentMode Cannot change screen BPP from 32 to 16 fixme:ddraw:DIB_DirectDrawSurface_Blt dwFlags DDBLT_WAIT and/or DDBLT_ASYNC: can't handle right now. fixme:ole:CoCreateInstance no instance created for interface {279afa83-4981-11ce-a521-0020af0be560} of class {d8f1eee0-f634-11cf-8700-00a0245d918b}, hres is 0x8000ffff fixme:dsound:IDirectSoundImpl_SetCooperativeLevel level=DSSCL_PRIORITY not fully supported err:ddraw:set_render_state Unhandled dwRenderStateType D3DRENDERSTATE_LINEPATTERN (0000000a) value : 00000000 ! err:ddraw:set_render_state Unhandled dwRenderStateType D3DRENDERSTATE_MONOENABLE (0000000b) value : 00000000 ! err:ddraw:set_render_state Unhandled dwRenderStateType D3DRENDERSTATE_ROP2 (0000000c) value : 0000000d ! err:ddraw:set_render_state Unhandled dwRenderStateType D3DRENDERSTATE_PLANEMASK (0000000d) value : ffffffff ! err:ddraw:set_render_state Unhandled dwRenderStateType D3DRENDERSTATE_LASTPIXEL (00000010) value : 00000001 ! err:ddraw:set_render_state Unhandled dwRenderStateType D3DRENDERSTATE_ZVISIBLE (0000001e) value : 00000000 ! err:ddraw:set_render_state Unhandled dwRenderStateType D3DRENDERSTATE_EDGEANTIALIAS (00000028) value : 00000000 ! err:ddraw:set_render_state Unhandled dwRenderStateType D3DRENDERSTATE_RANGEFOGENABLE (00000030) value : 00000000 ! err:ddraw:set_render_state Unhandled dwRenderStateType D3DRENDERSTATE_EXTENTS (0000008a) value : 00000000 ! err:ddraw:set_render_state Unhandled dwRenderStateType D3DRENDERSTATE_VERTEXBLEND (00000097) value : 00000000 ! fixme:amstream:AM_create ((nil),0x4095f5ec) fixme:amstream:IAMMultiMediaStreamImpl_QueryInterface (0x404ddbf0/0x404ddbf0)->({bebe595c-9a6f-11d0-8fde-00c04fd9189d},0x439644d0) fixme:amstream:IAMMultiMediaStreamImpl_AddRef (0x404ddbf0/0x404ddbf0) fixme:amstream:IAMMultiMediaStreamImpl_Release (0x404ddbf0/0x404ddbf0) fixme:amstream:IAMMultiMediaStreamImpl_Initialize (0x404ddbf0/0x404ddbf0)->(0,1,(nil)) stub! fixme:amstream:IAMMultiMediaStreamImpl_AddMediaStream (0x404ddbf0/0x404ddbf0)->((nil),0x495398,0,(nil)) stub! fixme:amstream:IAMMultiMediaStreamImpl_GetFilterGraph (0x404ddbf0/0x404ddbf0)->(0x439645e0) stub! fixme:quartz:QUARTZ_DllGetClassObject {4a2286e0-7bef-11ce-9bd9-0000e202599c}: no class found. fixme:ole:CoCreateInstance no classfactory created for CLSID {4a2286e0-7bef-11ce-9bd9-0000e202599c}, hres is 0x80040111 fixme:amstream:IAMMultiMediaStreamImpl_OpenFile (0x404ddbf0/0x404ddbf0)->(0x4095f694,0) stub! fixme:amstream:IAMMultiMediaStreamImpl_GetMediaStream (0x404ddbf0/0x404ddbf0)->(0x495398,0x439644e4) stub! wine: Unhandled exception (thread 0009), starting debugger... err:seh:start_debugger Couldn't start debugger ("debugger/winedbg 8 224") (2) Read the Wine Developers Guide on how to set up winedbg or another debugger fixme:winmm:MMDRV_Exit Closing while ll-driver open

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crosstest seems to be broken
by Kevin Koltzau May 20, 2004

May 20, 2004

I noticed my crosstest build last night failed on module.cross.o(.text+0x713): In function `testGetModuleFileName': /home/wine/wine/dlls/kernel/tests/module.c:63: undefined reference to `wine_dbgstr_wn' module.cross.o(.text+0x727):/home/wine/wine/dlls/kernel/tests/module.c:63: undefined reference to `wine_dbgstr_an' looks like this patch introduced the problem http://cvs.winehq.org/patch.py?id=12409 I won't have time to work on this in the next few days..so if someone could take a look at this I'd be most appreciative

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Bug in EndDialog
by Santosh Siddheshwar May 19, 2004

May 19, 2004

Hi, I think there may be a bug in EndDialog. Attached is a simple app which work fines on Windows but hangs on Linux. Follow the steps below to reproduce the problem. 1. Create the Sample2.exe from the attached project. 2. Run Sample2.exe 3. Click on Help | About menu item 4. Click on the OK button 5. App Hangs. Any clues? Regards Santosh Siddheshwar <<Sample2.zip>> ********************************************************************* Disclaimer: The information in this e-mail and any attachments is confidential / privileged. It is intended solely for the addressee or addressees. If you are not the addressee indicated in this message, you may not copy or deliver this message to anyone. In such case, you should destroy this message and kindly notify the sender by reply email. Please advise immediately if you or your employer does not consent to Internet email for messages of this kind. *********************************************************************

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