C++ visual studio inline assembly how do I push an address instead of the value of it

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I'm trying to push an address using inline asm on Visual Studio 2013,

mov [asd], 0x80
push asd

instead of pushing the address, it pushes the value of asd

I have no idea how to overcome this any help is appreciated

What I have tried:

asd is the address, but when i go to the memory region with a hex viewer the push asd turns into push [asd]

I have no idea what to try next

Posted 1-Oct-18 21:48pm

Member 14004556

Updated 1-Oct-18 22:24pm

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OriginalGriff · Accepted Answer · 2018-10-01T22:07:00

Solution 1

It's going to depend on the compiler, but for GCC it's:

C++

push $asd

See here, it might help: Using Inline Assembly in C/C++[^]

Posted 1-Oct-18 22:07pm

OriginalGriff

Comments

Member 14004556 2-Oct-18 4:12am

I'm using visual c++

OriginalGriff 2-Oct-18 4:19am

See here: https://msdn.microsoft.com/en-us/library/y8b57x4b.aspx

OriginalGriff 2-Oct-18 4:25am

So you didn't bother to read the link, and see the code that does it at the bottom then?

Member 14004556 2-Oct-18 4:27am

I just ended up reading it, thank u

OriginalGriff 2-Oct-18 4:43am

You're welcome!

Jochen Arndt · Accepted Answer · 2018-10-01T22:25:00

Solution 2

It depends on the used assembler. With MASM syntax which is used by Visual C/C++ you have to use the OFFSET keyword:

push OFFSET asd

Posted 1-Oct-18 22:25pm

Jochen Arndt