foo.S

   1 #define PR_(foo) __##foo
   2 #define PT_(foo,func) __##foo,##func
   3 #define FN_(foo) \
   4 .globl PR_(foo);                            \
   5         .hidden PR_(foo);                   \
   6         .type PT_(foo,@function)
   7
   8 FN_(imlib_mmx_blend_rgba_to_rgb)