Visual Studio: Difference between revisions

== Express 64 bit compilers ==

You can gain 64 bit compilers by installing the Windows SDK VC++ compilers (please note for VC10 SP1 you need to install the update)

== Quirks ==

In the 64 bit compilers you '''cannot:'''

Create naked funnctions

Do inline assembly

Do non-fastcall calling

This is why if you intend to do 64 bit development in MSVC++ you should have an external assembly layer (seperate versions for 32 bit and 64 bit), and if you want to avoid name decoration you need to declare them in a header file like this:

<source lang="cpp">

#ifdef __cplusplus //if this is C++

extern "C" { //declare as C functions

#endif

//your functions go here (E.G disable())

#ifdef __cplusplus

} //and if it was C++ we need to close the brackets

#endif

</source>

And in your asm layer:

<source lang="asm">

BITS 32 ;32 bit version

@disable@0

;fastcall name decoration (@0 to be replaced by size of args (bytes)

;Number of bytes is always prefixed by @

BITS 64 ;64 bit version

disable ;No decoration at all

</source>