[Bug target/60545] Please support the 64-bit Windows/EFI calling convention on x86-64 Linux/ELF

[pinskia at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=60545

Andrew Pinski <pinskia at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |RESOLVED
         Resolution|---                         |INVALID

--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
The attribute is ms_abi.  It is documented in 4.4.0 and above.

>From GCC 4.5.0 docuemtnation:
http://gcc.gnu.org/onlinedocs/gcc-4.45.0/gcc/Function-Attributes.html#Function-Attributes

ms_abi/sysv_abi
On 64-bit x86_64-*-* targets, you can use an ABI attribute to indicate which
calling convention should be used for a function. The ms_abi attribute tells
the compiler to use the Microsoft ABI, while the sysv_abi attribute tells the
compiler to use the ABI used on GNU/Linux and other systems. The default is to
use the Microsoft ABI when targeting Windows. On all other systems, the default
is the AMD ABI.
Note, the ms_abi attribute for Windows targets currently requires the
-maccumulate-outgoing-args option.