This is the mail archive of the
gcc-help@gcc.gnu.org
mailing list for the GCC project.
Re: Calling conventions used by gcc
Anders Schau Knatten wrote:
Yes, but one architecture can have several calling conventions, like
stdcall or cdecl. It is then up to the compiler to choose one of
these. The question is which one is used by gcc. I would also like to
be able to specify calling conventions in the function prototypes, but
so far I have been unsuccessfull. I have tried things like
extern "C" float __stdcall square_(float* x)
and
extern "C" float square_(float* x) __attribute__ ((__cdecl));
but they give me "syntax error" and "`__cdecl' attribute directive
ignored" respectively.
Most of the discussion on calling conventions out there seem to focus
on x86 or other architectures, and very few on IA64.
gcc depends on binutils to implement the ABI. I never heard of anyone
attempting to implement stdcall on IA-64; Microsoft decided to obsolete
it prior to implementing IA-64. Even at my age, this seems like ancient
history. I suppose both history and binutils are somewhat Off Topic here.