How to generate the debug info for the asm function?

Question

For example, I write a simple asm function in c++ program by using asm. But even I use -g to compile the program, I still can not find .debug_frame for the asm function.

__asm__ (
".text\n\t"
".align 2\n\t"
".globl " SYMBOL_UNDERSCORE "do_some_test\n\t"
 // do some thing
)

I use readelf -wf can not find the debug frame for the function do_some_test. So how can I get it ?