How to mix assembly code in C#

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3.67/5 (3 votes)

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Hi,
How to mix assembly code in C# ?

I remember in pascal we could mix like this:

Delphi

function GetCharacter ( x, y : word ) : byte; assembler;
asm
PUSH    BP
MOV BP,SP
PUSH    SI
PUSHF
CLD
{...}
end;

But, what's the solution in C#?

Thank you.

Posted 12-Feb-12 21:38pm

Fardan

Updated 12-Feb-12 21:46pm

v2

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3 solutions

Solution 2

You can write a C dll, and then invoke the C code from C#. That's how I do it - and by the way, that is described in Abhinav's first link above.

Posted 12-Feb-12 22:20pm

Bernhard Hiller

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mariazingzing · Accepted Answer · 2012-02-12T22:26:00

Solution 3

No way. C# is a managed code but assembly is unmanaged.
You can only import unmanaged dlls to your program.
use [DllImport("dllname.dll")]

Posted 12-Feb-12 22:26pm

mariazingzing

Updated 12-Feb-12 22:29pm

v2

Comments

Fardan 13-Feb-12 4:31am

Thank you Maria

Sergey Alexandrovich Kryukov 14-Feb-12 11:06am

Correct answer, but incorrect explanation. Fully incorrect.
.NET application can mix managed + unmanaged, even easily.
The problem is deeper. I would guess, such feature would be just too hard to implement, due to JIT-compiled nature of architecture, and the results would be totally non-portable.
--SA

Abhinav S · Accepted Answer · 2012-02-12T21:44:00

Solution 1

Try
Using Unmanaged code and assembler in C#[^]
Assembly Manipulation and C# / VB.NET Code Injection[^]

Posted 12-Feb-12 21:44pm

Abhinav S

Comments

Fardan 13-Feb-12 3:56am

Thanks but the first link is not about calling assembly code in C#, It's about calling unmanaged DLLs from C#. The second link is irrelevant.

Manfred Rudolf Bihy 13-Feb-12 4:33am

If you had read the article completely you'd know by now that calling assembler from C# directly is not possible. That is why OP of said article used the feature of calling code from an unmanaged DLL wherein he used assembler. Voilá!

Fardan 13-Feb-12 4:34am

I've read them completely Manfred

Sergey Alexandrovich Kryukov 14-Feb-12 11:09am

Good references to non-trivial articles, especially the second one, my 5.
No wonder 2/6 votes was "1" -- this is how the weak-minded aggressively react to anything disturbing -- my congratulations. :-)
--SA

Abhinav S 14-Feb-12 22:41pm

Thank you SA.