Question

How can I put Intel asm code into my c++ application?
I’m using Dev-C++.

I want to do sth like that:

int temp = 0;
int usernb = 3;

pusha
mov eax, temp
inc eax
xor usernb, usernb
mov eax, usernb
popa

This is only example.
How can I do sth like that?

UPDATE:
How does it look in Visual Studio ?

Answer 1

UPDATE: How does it look in Visual Studio ?

If you are building for 64 bit, you cannot use inline assembly in Visual Studio. If you are building for 32 bit, then you use __asm to do the embedding.

Generally, using inline ASM is a bad idea.

1. You’re probably going to produce worse ASM than a compiler.
2. Using any ASM in a method generally defeats any optimizations which try to touch that method (i.e. inlining).
3. If you need to access specific features of the processor not obvious in C++ (e.g. SIMD instructions) then you can use much more consistent with the language intrinsics provided by most any compiler vendor. Intrinsics give you all the speed of that “special” instruction but in a way which is compatible with the language semantics and with optimizers.