Ilasm. exe (IL Assembler)The IL Assembler helps tool vendors design and implement IL generators. Using Ilasm. exe, tool and compiler developers can concentrate on IL and metadata generation without being concerned with emitting IL in the PE file format. Similar to other compilers that target the runtime, such as C# and Visual Basic, Ilasm. PE file. The IL Assembler can express all the existing metadata and IL features of the programming languages that target the runtime. This allows managed code written in any of these programming languages to be adequately expressed in IL Assembler and compiled with Ilasm. Note Compilation might fail if the last line of code in the .
The.NET Micro framework provides a rich level of support for embedded. file for the Native code. code on the device. By the time the PE file.
You can use Ilasm. Ildasm. exe. Ildasm. PE file that contains IL code and creates a text file suitable as input to Ilasm. This is useful, for example, when compiling code in a programming language that does not support all the runtime metadata attributes.
After compiling the code and running the output through Ildasm. IL text file can be hand- edited to add the missing attributes. You can then run this text file through the Ilasm. You can also use this technique to produce a single PE file from several PE files originally generated by different compilers. Note Currently, you cannot use this technique with PE files that contain embedded native code (for example, PE files produced by Visual C++).
Cannot compile native/unmanaged method Local (embedded native) PInvoke method, the resulting PE file is. that contain embedded native code (for example, PE files. .NET Portable Executable File. contents with in the PE file. The second section is the native image. Machine code (native code) Where will this PE.
How to execute an executable embedded as resource. nor is there a native API for it which you can. A PE file is internally made up of different sections.
To make this combined use of Ildasm. Ilasm. exe as accurate as possible, by default the assembler does not substitute short encodings for long ones you might have written in your IL sources (or that might be emitted by another compiler). Use the /optimize option to substitute short encodings wherever possible. Note Ildasm. exe only operates on files on disk. It does not operate on files installed in the global assembly cache. For more information about the grammar of IL, see the asmparse. Windows Software Development Kit (SDK).
X86 Disassembly/Windows Executable Files. dynamic linking allows subroutine code to reside in a different file. The PE file format also supports a peculiar. You can then run this text file through the Ilasm.exe to. you cannot use this technique with PE files that contain embedded native code (for example, PE files.
How to execute an executable embedded as resource. It's quite possible - I've done it myself - but it's fiddly and more so from managed code.
There's no . NET API for it, nor is there a native API for it which you can PInvoke. So you'll have to fenagle the load by hand, which will require some knowledge of the PE (Portable Executable) file format used for modules such as DLLs and EXEs - http: //msdn. There'll be a lot of pointer manipulation (mandating use of unsafe {} blocks) and PInvoke. First load the PE file into memory (or use Map. View. Of. File). A PE file is internally made up of different sections containing code, data or resources.
The offsets of each section in the file don't always match intended in- memory offsets, so some minor adjustments are required. Every PE file assumes it'll be loaded at a certain base address in virtual memory. Unless you can ensure this you'll need to walk the PE file's relocation table to adjust pointers accordingly. Each PE file also has an import table listing which other DLLs' functions it wants to call. You'll need to walk this table and call Load.
Library() / Get. Proc. Address() to fill in each import. Next, memory protection needs to be set correctly for each section. Each section's header notes the protection it wants, so it's just a matter of calling Virtual. Protect() for each section with the correct flags. At a minimum you'll need to Virtual.
Protect the loaded module with PAGE_EXECUTE_READWRITE or you're unlikely to be able to execute any code. Lastly for a DLL you need to call its entry point, whose address can be found in the PE header; you can then freely call exported functions. Since you want to run an EXE, you've got some additional headaches. You can just spin up a new thread and call the EXE's entry point from it, but many EXE's may get upset since the process is set up for you, not the EXE. It also may well kill your process when it tries to exit. You might want to spawn a new process therefore - perhaps another copy of your main EXE with special arguments to tell it it's going to run some different code - in which case you'd have to fenagle the EXE into its memory space.
You'd probably want to do most of the above work in the new process, not the old. You could either create a named pipe and send the data across from one EXE to the other, or allocate a named shared memory area with Map. View. Of. File. Of course the EXE may still get upset since the process its running in still isn't its own. All in all its far easier just to write to a temporary file and then use Process. Start(). If you still want to do it the hard way, take a look at this example in unmanaged code: http: //www. This doesn't cover executables, just DLLs, but if the code therein doesn't scare you you'd be fine extending the process to cover executables.