Re: AIX DWARF debugging sections

Doug Evans
2015-10-06T20:00:02Z

On Tue, Oct 6, 2015 at 11:24 AM, David Edelsohn <dje.gcc@gmail.com> wrote:
> On Tue, Oct 6, 2015 at 12:51 PM, Joel Brobecker <brobecker@adacore.com> wrote:
>>> > Because the AIX section does not use the standard name, I am unsure
>>> > which it represents. The documentation only states "dwmac", which
>>> > could expand to either name.
>>> >
>>> > Thanks, David
>>>
>>> Yeah, I think we need to figure out which one it is.
>>
>> That's what I have been trying to do, but I don't see any evidence
>> that GCC emits it, or that binutils handles it. So the answer must
>> lie somewhere on the system side. David?
>
> The official answer from IBM XLC is the section is for both
> .debug_macinfo and .debug_macro
>
> For DWARF4 and below, the dwmac section corresponds to .debug_macinfo.
> For DWARF5 and above, the dwmac section corresponds to .debug_macro.
>
> XLC currently does not generate any macro debugging information for DWARF4.

Huh.
Let's make sure this is documented in the code.