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> Windows > Problems with my DLL in Win8x64 (but XP64/Win7x64 - works!)
For some reason can not perform my .DLL under Windows 8 x64.
The module test64.dll failed to load.
Make sure the binary is stored at the specified path or debug it to check for problems with the binary or dependent. DLL files.
Invalid access to memory location.
In Windows XP 64bit and Windows 7 64bit - copy my test64.dll in C:\Windows\System32, and execute in CMD-console:
All is fine, everything works.
The problem with Windows 8 x64. There's my test64.dll does not work.
UAC off completely, I'm admin, tried to run from .cmd as Run as Adminstrator.
In any case, the result: Invalid access to memory location.
Debugging MessageBox does not show - that is, .DLL does not called at all - DllEntryPoint not called.
Other startup methods (via the registry) is not working. Since then, and began proceedings. There is my program (COM-server shell extensions) which works in all 64bit Windows (XP64, 7x64, 2008), but here in Win8 found that does not work. In what has created such a simple example test64.dll - and found that he Win8 does not work ...
Have any ideas what I have here a mistake?
; build in FASM v.1.69.35 ; X:\ASM\FASM\FASM.EXE test64dll.asm test64.dll format PE64 GUI 4.0 DLL entry DllEntryPoint include 'X:\ASM\FASM\INCLUDE\WIN64A.INC' section '.idata' import data readable writeable library user32,'USER32.DLL' import user32,MessageBoxA,'MessageBoxA' section '.text' code readable executable proc DllEntryPoint .hinstDLL,.fdwReason,.lpvReserved invoke MessageBoxA, 0, t_DllEntryPoint, t_test64, MB_OK mov rax, 1 ret endp proc DllCanUnloadNow invoke MessageBoxA, 0, t_DllCanUnloadNow, t_test64, MB_OK mov rax, 0 ret endp proc DllGetClassObject, rclsid,riid,ppv mov [rclsid], rcx mov [riid], rdx mov [ppv], r8 push rdi sub rsp, 8 ; stack align invoke MessageBoxA, 0, t_DllGetClassObject, t_test64, MB_OK mov rdi, [ppv] mov qword [rdi], 0 mov rax, 0x80040111 ; CLASS_E_CLASSNOTAVAILABLE add rsp, 8 pop rdi ret endp proc DllRegisterServer invoke MessageBoxA, 0, t_DllRegisterServer, t_test64, MB_OK mov rax, 0 ret endp proc DllUnregisterServer invoke MessageBoxA, 0, t_DllUnregisterServer, t_test64, MB_OK mov rax, 0 ret endp section '.bss' data readable writeable t_test64 db 'test64.dll',0 t_DllEntryPoint db 'DllEntryPoint',0 t_DllCanUnloadNow db 'DllCanUnloadNow',0 t_DllGetClassObject db 'DllGetClassObject',0 t_DllRegisterServer db 'DllRegisterServer',0 t_DllUnregisterServer db 'DllUnregisterServer',0 section '.edata' export data readable export 'test64.DLL',\ DllEntryPoint,'DllEntryPoint',\ DllCanUnloadNow,'DllCanUnloadNow',\ DllGetClassObject,'DllGetClassObject',\ DllRegisterServer,'DllRegisterServer',\ DllUnregisterServer,'DllUnregisterServer' section '.reloc' fixups data discardable
|01 Jan 2012, 20:19||
Remove the line section '.reloc'... And DLL in Windows8 - works!
But broken in WinXP64 (LoadLibrary failed - Attempt to access invalid address) and Win7x64 (Invalid access to memory location).
Further discovered that the problem is not just win8x64, but in general both Win8 - to 32-bit exactly the same mistake (of course there I wrote a 32-bit DLL).
What to write in '.reloc' to work in WinXP/Win7 and Win8 ?
Gathered the same DLL in MASM x64 v10 - it works in xp64, and win8x64...
The problem with FASM...
|03 Jan 2012, 00:12||
|03 Jan 2012, 01:49||
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