Calling conventions for IAR

[jonsmirl at gmail.com]

Currently we are using the ARM gcc AAPCS calling conventions. I need
to call into an older ROM written with an IAR compiler. Can I decorate
the function declarations for older calling conventions like I do on
x86 (_fastcall, _cdelc, _stdcall, etc)? I can't figure out the right
thing to search for, what's a good keyword?

-- 
Jon Smirl
jonsmirl at gmail.com