[rfa?] Add frame_align(); Was: ARM stack alignment on hand called functions

[Andrew Cagney]

>> >> >> +/* Ensure that the ARM's stack pointer has the correct alignment for a
>> >> >> +   new frame.  */
>> >> >> +static CORE_ADDR
>> >> >> +arm_frame_align (struct gdbarch *gdbarch, CORE_ADDR addr)
>> >> >> +{
>> >> >> +  return (addr & -16);
>> >> >> +}

>> You mean ~(ULONGEST)0x7?

> I mean ~(typeof(addr)) 0x7.

M'kay (finally gets brain around what that expression is doing), back to 
the patch.

Does it fix the bug?

Andrew