Hi, I have a win32 dll which exports about 30 functions. I've used winedump with the -f and -I flags to create stub/proxy functions which use LoadLibrary. Please CC my on all responses as I am not subscribed to the list.
It generates functions like so..
HGTBSESSION __stdcall GTBAPI_gtbCreateSession(HWND hParent, GTBSessionCallback * lpCallBack, void * lpParam) { HGTBSESSION (__stdcall *pFunc)(HWND, const GTBSessionCallback *, void *); HGTBSESSION retVal; pFunc=(void*)GetProcAddress(hDLL,"gtbCreateSession"); TRACE("((HWND)%p,(GTBSessionCallback *)%p,(void *)%p): forward\n",hParent,lpCallBack,lpParam); retVal = pFunc(hParent,lpCallBack,lpParam); TRACE("Returned (%p)\n",retVal); return retVal; }
For compatibility with existing code I removed the GTBAPI_ from the function and switched back to the native prototype.
GTAPIB_EXTERN HGTBSESSION WINAPI gtbCreateSession(HWND hParent, const GTBSessionCallback *lpCallBack, void *lpParam)
Compiled and linked like so.
gcc -shared GTAPIB_main.c -I/usr/include/wine/windows -I../GenSrc/API/GTAPIB -o ../lib/libgtapib.so /usr/lib/wine/kernel32.dll.so
Then I have a small test app that I compile/link:
winegcc TestAPIB.c -I/usr/include/wine/windows -I ../../../GenSrc/API/GTAPIB -L../../../lib -lgtapib -lkernel32 -o TestAPIB
Running ./TestAPIB throws the following error
WineDbg starting on pid 0x8 Unhandled exception: page fault on read access to 0x00000000 in 32-bit code (0x00000000). In 32 bit mode. ..... Backtrace: =>1 0x00000000 (0x406efe60) fixme:dbghelp:elf_load_debug_info_from_map Unsupported Dwarf2 information for testapib<elf> 2 0x405e5276 WinMain in testapib (0x406efe90) 3 0x405e5173 __wine_exe_main in testapib (0x406eff20) 4 0x404e0de2 in kernel32 (+0x50de2) (0x406efff4) 5 0x4001d181 wine_switch_to_stack in libwine.so.1 (0x00000000) 0x00000000: addb %al,0x0(%eax)
My wine version is 20050310
Any tips would be greatly appreciated.
Thanks, Stephen
Stephen Crowley wrote:
Hi, I have a win32 dll which exports about 30 functions. I've used winedump with the -f and -I flags to create stub/proxy functions which use LoadLibrary. Please CC my on all responses as I am not subscribed to the list.
It generates functions like so..
HGTBSESSION __stdcall GTBAPI_gtbCreateSession(HWND hParent, GTBSessionCallback * lpCallBack, void * lpParam) { HGTBSESSION (__stdcall *pFunc)(HWND, const GTBSessionCallback *, void *); HGTBSESSION retVal; pFunc=(void*)GetProcAddress(hDLL,"gtbCreateSession"); TRACE("((HWND)%p,(GTBSessionCallback *)%p,(void *)%p): forward\n",hParent,lpCallBack,lpParam); retVal = pFunc(hParent,lpCallBack,lpParam); TRACE("Returned (%p)\n",retVal); return retVal; }
For compatibility with existing code I removed the GTBAPI_ from the function and switched back to the native prototype.
GTAPIB_EXTERN HGTBSESSION WINAPI gtbCreateSession(HWND hParent, const GTBSessionCallback *lpCallBack, void *lpParam)
Compiled and linked like so.
gcc -shared GTAPIB_main.c -I/usr/include/wine/windows -I../GenSrc/API/GTAPIB -o ../lib/libgtapib.so /usr/lib/wine/kernel32.dll.so
Then I have a small test app that I compile/link:
winegcc TestAPIB.c -I/usr/include/wine/windows -I ../../../GenSrc/API/GTAPIB -L../../../lib -lgtapib -lkernel32 -o TestAPIB
Running ./TestAPIB throws the following error
WineDbg starting on pid 0x8 Unhandled exception: page fault on read access to 0x00000000 in 32-bit code (0x00000000). In 32 bit mode. ..... Backtrace: =>1 0x00000000 (0x406efe60) fixme:dbghelp:elf_load_debug_info_from_map Unsupported Dwarf2 information for testapib<elf> 2 0x405e5276 WinMain in testapib (0x406efe90) 3 0x405e5173 __wine_exe_main in testapib (0x406eff20) 4 0x404e0de2 in kernel32 (+0x50de2) (0x406efff4) 5 0x4001d181 wine_switch_to_stack in libwine.so.1 (0x00000000) 0x00000000: addb %al,0x0(%eax)
My wine version is 20050310
Any tips would be greatly appreciated.
Compile your program with the "-gstabs+" flag and you will get debugging information compatible with winedbg. From there, it should be easier to work out the real cause of the crash.
Rob
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Robert Shearman -
Stephen Crowley