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How to view the assembly behind the code using Visual C++?

Asked 2009-06-19T23:40:50.283
145

I was reading another question pertaining the efficiency of two lines of code, and the OP said that he looked at the assembly behind the code and both lines were identical in assembly. Digression aside, how could I view the assembly code created when a program is compiled.

I'm using Microsoft's Visual C++, but I would also like to know if it's possible to view the assembly behind code written in Visual Basic.

So, how do I view the assembly code behind a program written in higher level languages like C++ and Visual Basic?

visual-c++ assembly
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3 Answers

27

Additional note: there is big difference between Debug assembler output and Release one. The first one is good to learn how compiler produces assembler code from C++. The second one is good to learn how compiler optimizes various C++ constructs. In this case some C++-to-asm transformations are not obvious.

answered 2009-06-20T08:57:58.593
7

For MSVC you can use the linker.

link.exe /dump /linenumbers /disasm /out:foo.dis foo.dll

foo.pdb needs to be available to get symbols

answered 2012-02-11T23:41:14.487
0

Red Gate's .NET Reflector is a pretty awesome tool that has helped me out more than a few times. The plus side of this utility outside of easily showing you MSIL is that you can analyze a lot of third-party DLLs and have the Reflector take care of converting MSIL to C# and VB.

I'm not promising the code will be as clear as source but you shouldn't have much trouble following it.

answered 2009-06-20T00:12:07.867

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