Re: Difference between Portable Executable (PE) file and a Assembl
- From: "Mahesh Nimbalkar" <MaheshNimbalkar@xxxxxxxxxxxxxxxxxxxxxxxxx>
- Date: Mon, 2 May 2005 18:25:01 -0700
Thanks Scott, thanks Ben.
"Scott Allen" wrote:
> ILASM is more of a repackaging tool. It takes IL code and packages the
> code into a file in the PE format. If you wrote your own compiler that
> generated MSIL, then you could use ILASM to put the MSIL into a
> managed executable. ILASM doesn't generate native code.
>
> NGEN.EXE can be used to generate native code for an assembly. I'd only
> recommend using NGEN if you have a good reason to avoid JIT compiling.
>
> --
> Scott
> http://www.OdeToCode.com/blogs/scott/
>
>
> On Sun, 1 May 2005 15:11:14 -0700, suresh_C#
> <sureshC@xxxxxxxxxxxxxxxxxxxxxxxxx> wrote:
>
> >
> >Thanks Ben. This is clear to me now.
> >
> >I would be grateful if you answer to this question also.
> >
> >I assume that JIT compiler and Ilasm.exe convert the IL code into machine
> >dependent code.
> >
> >I knew that there are 2 tools ie JIT and one more tool [I forgot name] which
> >do the above. Then in .NET who uses the Ilasm.exe tool.
> >
> >
> >
> >"Ben Fidge" wrote:
> >
> >> Yes you are right, a PE executable is created from the IL. PE is the file
> >> format used to define 32bit Windows Executables. This is the native format
> >> used by Windows. As mentioned, your .NET assembly is first compiled to IL
> >> which is a platform independant assembly language. This is then compiled
> >> into the platform specific binary, which for us Windows developers is called
> >> PE.
> >>
> >> PE has been around since the first versions of Windows NT and all versions
> >> of Windows since Win95 have also been made to expect that particular format
> >> to store binary executables. Obviously, as no current processors know how to
> >> execute IL, it needs recompiling for the processor and platform it's running
> >> on.
> >>
> >> For more info on the format have a look here:
> >>
> >> http://www.wotsit.org/search.asp?page=2&s=binary
> >>
> >>
> >>
> >> "suresh_C#" <sureshC@xxxxxxxxxxxxxxxxxxxxxxxxx> wrote in message
> >> news:47968DF1-825C-4B55-99C6-DC71841B5417@xxxxxxxxxxxxxxxx
> >> >
> >> > Thanks Ben, Thanks Scott.
> >> >
> >> > But, following is definition of Ilasm.exe
> >> > --
> >> > When you compile managed code, the compiler converts the source code to
> >> > MSIL
> >> > code. MSIL is a CPU-independent language and its code can be converted to
> >> > native code. ***You can use the Ilasm tool, Ilasm.exe, to generate a
> >> > portable
> >> > executable file from the MSIL code. *** You can then run the resulting
> >> > executable file to determine the performance of your application. This
> >> > enables you to generate the MSIL code and the metadata without emitting
> >> > MSIL
> >> > in the portable executable file format. In addition, Ilasm.exe does not
> >> > create intermediate object files. It also does not have a linking stage to
> >> > generate a portable executable file.
> >> > --
> >> >
> >> > ***You can use the Ilasm tool, Ilasm.exe, to generate a portable
> >> > executable
> >> > file from the MSIL code. ***
> >> >
> >> > Considering this point, I think it generates a portable executable file (
> >> > ??? different file ) from the MSIL code (Assembly ???)
> >> >
> >> > Am I right? If right please I don't understand what is PE and why it is
> >> > used
> >> > then.
> >> >
> >> >
> >> >
> >> > "Scott Allen" wrote:
> >> >
> >> >> Hi Mahesh:
> >> >>
> >> >> PE is a file format.
> >> >>
> >> >> An assembly is the smallest unit of deployment for .NET applications
> >> >> and consist of one or more modules. These modules use the PE file
> >> >> format.
> >> >>
> >> >> --
> >> >> Scott
> >> >> http://www.OdeToCode.com/blogs/scott/
> >> >>
> >> >> On Sun, 1 May 2005 12:17:05 -0700, suresh_C#
> >> >> <sureshC@xxxxxxxxxxxxxxxxxxxxxxxxx> wrote:
> >> >>
> >> >> >Dear All,
> >> >> >
> >> >> >What is difference between Portable Executable (PE) file and a Assembly?
> >> >> >
> >> >> >Thanks,
> >> >> >Mahesh
> >> >> >
> >> >> >
> >> >>
> >> >>
> >> >
> >>
> >>
> >>
>
>
.
- References:
- Difference between Portable Executable (PE) file and a Assembly
- From: suresh_C#
- Re: Difference between Portable Executable (PE) file and a Assembly
- From: Scott Allen
- Re: Difference between Portable Executable (PE) file and a Assembl
- From: suresh_C#
- Re: Difference between Portable Executable (PE) file and a Assembl
- From: Ben Fidge
- Re: Difference between Portable Executable (PE) file and a Assembl
- From: suresh_C#
- Re: Difference between Portable Executable (PE) file and a Assembl
- From: Scott Allen
- Difference between Portable Executable (PE) file and a Assembly
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