Explain Microsoft intermediate language (MSIL) Assembler?

October 13, 2009 Posted by Chetankumar Akarte

MSIL Assembler (Ilasm.exe) is a command line tool provides by .Net. The MSIL Assembler generates a portable executable (PE) file from MSIL assembly language. You can run the resulting executable, which contains MSIL and the required metadata, to determine whether the MSIL performs as expected.

Syntax ilasm [options] filename [[options]filename…]
Parameters
filename	The name of the .il source file. This file consists of metadata declaration directives and symbolic MSIL instructions.Multiple source file arguments can be supplied to produce a single PE file with Ilasm.exe.
options
/alignment=integer	Sets FileAlignment to the value specified by integer in the NT Optional header.
/base=integer	Sets ImageBase to the value specified by integer in the NT Optional header.
/clock	Measures and reports the following compilation times in milliseconds for the specified .il source file
/debug	Includes debug information.
/dll	Specifies the name of the dll file that is generated as output.
/flags=integer	Sets ImageFlags to the value specified by integer in the common language runtime header.
/key:keyFile	Compiles filename with a strong signature using the private key contained in keyFile.
/key:@keySource	Compiles filename with a strong signature using the private key produced at keySource.
/listing	Produces a listing file on the standard output.
/nologo	Suppresses the Microsoft startup banner display.
/output:file.ext	Specifies the output file name and extension.
/quiet	Specifies quiet mode; does not report assembly progress.
/resource:file.res	Includes the specified resource file in *.res format in the resulting .exe or .dll file.
/subsystem=integer	Sets subsystem to the value specified by integer in the NT Optional header.
/?	Displays help at the command prompt.