Re: [Nasm-devel] Macro for C-calls

[H. P. A. <hp...@zy...>]

Catalin Ionescu wrote:
> These things are not so OS-dependent, and even less compiler-dependant! 
> Basically there are four major calling conventions:
> 
> 1) C calling - the arguments are pushed on the stack "last is pushed 
> first", thus allowing a variable number of arguments for a function 
> (remember "printf") and the stack is emptied by the caller. Functions 
> with a variable number of arguments will ALWAYS use it.

Not true.  With some compilers, regcall (what you call fastcall) is used 
even for varadic functions.  Furthermore, the posted macro assumed a 
32-bit operating system, and used o32 to try to enforce that -- which 
could actually result in bad code.

	-hpa