Alright so my idea was some way to bind both 64-bit and 32-bit Windows executables into one application so if it doesn't run the 64-bit version it would then try the 32-bit one.
I was reading up about PE's and learned a little about MS-DOS Real Mode Stub and it says how it invokes an application (usually an error message). But every time I tried to do research about MS-DOS Real Mode Stub it seemed to only show error messages. So my idea was to overwrite the STUB with my 32-bit application.
My self being naive figured when the 32-bit operating system would run the the 64-bit executable it would fail and then run the stub file.
Is there any way to make my executable 32-bit/64-bit independent?
You could not create a single executable file, containing both x86 and x64 code. However you could create separate 32bit and 64bit applications, pack x64 app into the x86 app resources. On the program start you could check, that you are running x64 environment using IsWow64Process then if needed, unpack your x64 version and run it instead
There are fat binaries in MacOS, Linux and DOS (or hybrid DOS-Windows) but not 32 and 64-bit Windows
You can simply compile separate versions of the program, distribute both and then select the required version at run time by a script or another executable
Another way is installing only the desired version at install time. This is used by many programs like CCleaner. The installer is a 32-bit app or a universal one like .NET so that it can run anywhere. If it detects 64-bit Windows then it only installs the 64-bit version, and in the other case only the 32-bit version.
Read more:
Universal binary
Windows 8 fat binary (exe for x86 & ARM)
Windows NT has always been a multi-platform OS, but the binaries are not
Related
I have installed VSCode and GO extension with defaults packages.
My project need to load a 32-bit DLL. When I launch project with F5, I get error 193 on syscall.LoadLibrary().
I found on internet that error usually occurs when someone try to load a 32-bit DLL on a 64-bit arch.
I think if I debug with GOARCH=386 I would be able to load the DLL. But every time that I try to execute with GOARCH=386 I get error on VSCode saying that this architecture is unsupported.
Need help.
(I assume that a 64-bit DLL is out of reach)
64-bit process cannot load a 32-bit module into its process space, and a 32-bit processes cannot load a 64-bit module into its process space. The only way that communication can happen between 32-bit and 64-bit modules is through inter-process communication (IPC). Microsoft recommends that you use inter-process COM to use 32 bit code with a 64 bit application. Here's an article explaining the process. It's ugly.
If it's OK on your end, build your project to X86 platform (32-bit). In that way ehlapi32.dll is compatible & problem solved. Your 32-bit software is still supported on a 64-bit platform as 32-bit processes can be executed on 64-bit Windows operating system.
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I familiar with C++ & not at all with GO. I have no idea how (or if at all) that technique can be implemented in GO.
The issue is because you are trying to load 32bit dll on 64bit architecture. Use 64 bit dll file. Along with that Install using 64bit dll for golang.
Just if you try to install delve from 32bit dll on 64 bit OS. This is also mentioned in the issues on github:
https://github.com/derekparker/delve/issues/20
VS Code complains if you want to run 32bit dll on 64 bit OS.
If you have 32bit dll for golang Uninstall that and install from 64bit dll again.
We've got an ancient of days VB6 app which sometimes needs to be updated and installed on our user's machines. We've begun using Inno, and especially InnoIDE, to make the setup.exe, to get this onto our user's PCs. However, I'm wondering about 64-bit Windows, and Inno setups. We've got a couple of machines in-house, which are 64-bit versions of Windows 7 Professional. I've successfully installed our app, using the setup from Inno, onto a 32-bit Windows XP machine. Can I use the same setup on our 64-bit Windows 7 machines? Will it put the .exe into the C:\Program Files (x86)\ directory structure automatically, or do I have to make allowances for 64-bit versions of Windows?
If your app is only 32-bit, then Inno will automatically take care of doing everything correctly.
Only if your app is mixed or 64-bit do you need to do anything special as rushman says.
There is a very good section in the help file that explains the changes needed.
If you're installing any 64-bit device drivers, the calls to most newdev and setupapi entry points will fail with error code 0xE0000235 (ERROR_IN_WOW64). Those calls only work when invoked from 64-bit code, and Inno doesn't compile 64-bit installers yet. You may work around by using pnputil.exe, by adding a 64-bit stub executable, or by switching to WiX.
For 64-bit INNO intallations you generally only need to add one setup section directive and, obviously, add the 64-bit versions of DLL's and EXE's to the compiled installer.
The setup section directive is:
ArchitecturesInstallIn64BitMode=x64
I have a problem related to this question. Two players:
C# application
Mixed assembly used by 1)
The application has to support anything from Windows XP (32bit) to Windows 7 (32 & 64bit). The assembly is complicated in different ways. It contains managed C++/CLI code and some native C++ classes dancing with native DirectX. It also is linked to a few 32bit native dll's w/o source access (containing C++ classes with import libraries).
Things are working well in 32bit environments (XP and 7 tested) including the 32bit subsystem on Windows 7. Havoc happens, as soon as "Any CPU" is used on 64bit systems in order to build the complete solution. The 32bit assembly is unusable than - but seemingly only in debug mode ("cannot load, wrong format" etc.). It seems to work in release. A 64bit assembly build is prevented by the implicit dependencies to the mentioned 32bit third-party dll's.
Is there any way to provide a real native 64bit application able to use the assembly?
Requirement for the assembly isn't that strict. It could be both - 32 or 64bit - but as said above, should be be usable from the application one way or the other.
You are running into a rock hard limitation in the 64-bit version of Windows, a 64-bit process cannot execute any 32-bit machine code in-process. You certainly have a dependency on machine code when you use C++/CLI and work with DirectX. Although it doesn't sound like you could not execute in 64-bit mode, both C++/CLI and DirectX can be compiled/are available in 64-bit.
This then boils down to a build and deployment issue. You have to build the C++/CLI project(s) in 64-bit mode and deploy only 64-bit components on a 64-bit operating system. The main EXE must be built to AnyCPU. Similarly, on a 32-bit operating system you must build and deploy only the 32-bit compiled version. You solve the build issue by adding the x64 configuration to the solution so you build the 32-bit and 64-bit version separately. You solve the deployment issue by creating two installers.
Since you have to support a 32-bit operating system anyway, the simple solution is to change the Target platform setting on your EXE project to x86. Now everything always runs in 32-bit mode and you don't have to bother with the build and deployment headaches. The only thing you miss out on is the larger virtual memory address space that's available in the 64-bit version.
Forget about the C++/CLI project for a minute.
You have third-party 32-bit DLLs. These CANNOT load in a 64-bit process. So your main application will have to be 32-bit. This restriction has nothing to do with the C++/CLI middleman.
The only way you can make use of these DLLs from a 64-bit application is to load them in a separate (32-bit) process and marshal data back and forth.
I have seen that some programs which were written by me and assembled for x86 using ml.exe run fine on my Win 7 x64. I believe this is because of Wow technology.
However, there are some programs (not written by me) which don't run. They give the error that:
The version of this file is not compatible with the version of Windows you're running. Check you computer system infromation to see whether you need an x86 (32-bit) or x64 (64-bit) version of the program, and then contact the software publisher
Is there any way I can modify the EXE of these programs to make it run on Win 7 x64. What is the fundamental difference in these programs which make it different from other programs which run transparently.
They're actually 8- or 16-bit programs. Windows x64 runs in Long Mode, which does not support Virtual 8086 Mode, required for such programs. There is no way to make them work short of recompiling them from source or running them in a virtual machine.
One reason can be combination of .NET and native libraries. .NET libraries are compiled in runtime as x64 (if you don't specify explicitly x86) and native libraries run in x86 mode. it cannot run togehther.
Another reason is access to registry. Depending on used API, x86app in wow64 mode can be forwarded to another part of registry. If the registry access API is inconsistent, it can make a problem.
Is there any way to compile an EXE file, so that it will run natively in both x86 and x64? Something like: compile both codebases and pack them into a single executable.
I know .NET code could run in "any cpu" mode, but it is not what I want.
A 32-bit executable will run natively on 32-bit and x64 Windows machines. The only way you're going to get x64 execution within a 32-bit PE file is by using an undocumented gate, which I highly doubt anyone uses in practice because it's highly version dependent (and undocumented).
Then again you make it so the 32-bit binary will execute a 64-bit version of the binary and exit if it detects a 64-bit CPU...
You could take the Process Explorer approach. In your 32-bit binary embed the 64-bit binary as a resource. If the 32-bit binary is launched on a 64-bit machine, extract the 64-bit binary and launch that.