[testsuite patch] Fix testsuite regression by: Do not skip prologue for asm (.S) files

[Yao Qi]

Jan Kratochvil <jan.kratochvil@redhat.com> writes:

> OK for check-in?
>

Yes, it is OK.

>
> Jan
> gdb/testsuite/
> 2015-06-29  Jan Kratochvil  <jan.kratochvil@redhat.com>
>
> 	* gdb.asm/asm-source.exp (f at main): Stop at gdbasm_enter.
> 	(n at main): New.
> 	* gdb.asm/asmsrc1.s: Add comment "mark: main enter".

What does "f at main" and "n at main" in parenthesises mean here?

-- 
Yao (齐尧)