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.NET Forum / .NET Framework / CLR / October 2006Compiling .NET assembly to equivalent native code
I need to compile .NET assembly to native code. Microsoft's utility NGEN does not produce an executable file. Instead of this, it places the precached image to WinDir\Prefetch.This image is not a PE file. I need the one producing PE or equivalent code in C or C++ native. Can anybody help? Hello LOST, L> I need to compile .NET assembly to native code. What do u mean? Do u want to get pure unmanaged code from managed sources? it's impossible L> Microsoft's utility NGEN does not produce an executable file. Instead of this, it places L> the precached image to WinDir\Prefetch.This image is not a PE file. Yep, NGEN gives u platform-compiled version of your app, to avoid compilation during starting application. The reason - to improve start up time, avoid IL compilation L> I need the one producing PE or equivalent code in C or C++ native. .NET apps has the PE, but it comprises shrim class that responsible for starting app under .net framework --- WBR, Michael Nemtsev :: blog: http://spaces.live.com/laflour "At times one remains faithful to a cause only because its opponents do not cease to be insipid." (c) Friedrich Nietzsche > Hello LOST, > > L> I need to compile .NET assembly to native code. > > What do u mean? Do u want to get pure unmanaged code from managed sources? > it's impossible impossible? Actually, I need almost the same code JIT compiler produce, but stored in separate executable. Why is it impossible? Hello LOST, Such is the .NET architecture. Executable is only the assembly (in case of EXE file) that has a standard PE hearder. And that uses unmanaged mscoree.dll to init all work to start you managed code. NGEN there helps to avoid compilation - when u call smth u redirected to the NGEN image not to process of JIT compilation L> Michael Nemtsev wrote: L> >> Hello LOST, >> >> L> I need to compile .NET assembly to native code. >> >> What do u mean? Do u want to get pure unmanaged code from managed >> sources? it's impossible L> impossible? Actually, I need almost the same code JIT compiler L> produce, but stored in separate executable. Why is it impossible? L> --- WBR, Michael Nemtsev :: blog: http://spaces.live.com/laflour "At times one remains faithful to a cause only because its opponents do not cease to be insipid." (c) Friedrich Nietzsch >> L> I need to compile .NET assembly to native code. >> What do u mean? Do u want to get pure unmanaged code from managed >> sources? >> it's impossible > impossible? Actually, I need almost the same code JIT compiler produce, > but stored in separate executable. Why is it impossible? Because this code need the .NET runtime. Actually .NET is another operating system than the underlaying OS (win32). If you need native code, you should consider rewriting your application as a win32 application.  SignatureFrancois PIETTE http://www.overbyte.be Indeed, I understand JIT-compiled code requires runtime to execute. I found one solution. It's Salamander. But it costs about $1200. Hello LOST, L> Indeed, I understand JIT-compiled code requires runtime to execute. I L> found one solution. It's Salamander. But it costs about $1200. Salamander is Decompiler - it just takes your managed binary and decomplile it to the managed source code There is nothig about "get unmanaged binary from managed source" --- WBR, Michael Nemtsev :: blog: http://spaces.live.com/laflour "At times one remains faithful to a cause only because its opponents do not cease to be insipid." (c) Friedrich Nietzsche > Hello LOST, > [quoted text clipped - 4 lines] > decomplile it to the managed source code > There is nothig about "get unmanaged binary from managed source" <quote> Our protector is not an obfuscator, rather it converts the decompilable Microsoft Intermediate Language code (MSIL or CIL) of your assemblies into native format while keeping all .NET metadata intact, and thus it provides the same level of protection as native C/C++ code. </quote> It's $1899 by the way. Xenocode also have something called PostBuild (www.xenocode.com). PS > --- > WBR, > Michael Nemtsev :: blog: http://spaces.live.com/laflour > > "At times one remains faithful to a cause only because its opponents do > not cease to be insipid." (c) Friedrich Nietzsche >Microsoft's utility >NGEN does not produce an executable file. Instead of this, it places >the precached image to WinDir\Prefetch. NGEN has nothing to do with Windows' Prefetch feature. The NGEN cache is located in %WINDIR%\assembly\NativeImages<version> directories. Mattias SignatureMattias Sjögren [C# MVP] mattias @ mvps.org http://www.msjogren.net/dotnet/ | http://www.dotnetinterop.com Please reply only to the newsgroup. > I need to compile .NET assembly to native code. Microsoft's utility > NGEN does not produce an executable file. Instead of this, it places > the precached image to WinDir\Prefetch.This image is not a PE file. > I need the one producing PE or equivalent code in C or C++ native. Can > anybody help? I hear you; I wanted something like this too at one time. But for one thing the jitter can change the executed binary code around while the program is running in order to optimize it, so the whole idea of what you want is impossible because the code the jitter generates can depend on the context of the execution which would not be known if you wanted something to generate code. It might be possible for somebody to create a program that would take an assembly and generate a native executable from that, but as far as I know there is nothing like that on the market today.
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