Re: C calling conventions: how to pass a struct parameter?

[Cezar Harabula <cezar.harabula@xxxxxxxxxxxxx>]

Thank you for your answers. Unfortunately, I was not clear enough. I 
want to know what happens in the registers and in the stack when a 
procedure like

void PrintFoo(struct Foo foo)

is called. There is no universal C calling convention set for x86,  so I 
am interested in how GCC usually does.

What about a struct return value:
struct bar Function() ?

Thanks.
Cezar


Eljay Love-Jensen wrote:

> Hi Cezar,
>
> (Hey, "Cezar", cool name.)
>
> This should work:
>
> struct Foo { int a,b,c; };
>
> void PrintFoo(struct Foo foo)
> {
>   printf("Foo:%d,%d,%d\n", foo.a, foo.b, foo.c);
> }
>
> That's a pass-by-value.
>
> Here's pass-by-pointer: