[lsb-discuss] Does the standard “Function Calling Sequence” described in Sys V ABI specs (both i386 and AMD64) also applies to the static C functions?

[Alan Cox]

On Fri, 28 Dec 2018 20:10:43 +0800
Remus Clearwater <remus.clearwater at gmail.com> wrote:

> Sorry to repost (to make a better type setting).
> 
> --
> 
> I am sure that the standard "Function Calling Sequence" described in Sys V
> ABI specs (both i386 and AMD64) constraints the calling of those extern
> functions in a C library, but does it constraints the calling of those
> static functions too?

In some cases it has to:

static int foo (int bar)
{
	return bar + baz;
}

void wibble(struct ops *op)
{
	ops->foo = foo;
}

In other cases it demonstrably does not because gcc will in fact inline
the entire static function and it will never even appear in the code.

Alan