[LLVMdev] DWARF unmangled subprog name (DW_AT_name)

[Alexey Samsonov]

Yeah, public API of DebugInfo library is quite minimalistic. But I agree
with Eric - what is the use case for getting unmangled name from DIE?


On Tue, May 6, 2014 at 11:21 PM, Keno Fischer
<kfischer at college.harvard.edu>wrote:

> That doesn't seem possible with the public API or am I mistaking?
>
>
> On Wed, May 7, 2014 at 12:13 AM, Eric Christopher <echristo at gmail.com>wrote:
>
>> On Tue, May 6, 2014 at 8:09 PM, Isaiah Norton <isaiah.norton at gmail.com>
>> wrote:
>> > Hi,
>> >
>> > I am looking for a way to get unmangled subprogram names from a
>> > DWARFContext. The name I want is available in the attribute `DW_AT_name`
>> > [1], but as far as I can tell this is only returned as a fallback in
>> > `DWARFDebugInfoEntryMinimal::getSubroutineName` when the linkage name
>> is not
>> > available [2].
>> >
>> > If this is not currently possible, is there any interest in adding such
>> > access to the public DebugInfo API? Perhaps with an additional
>> > "UnmangledName" option in `DILineInfoSpecifier`.
>> >
>> > Thanks,
>> > Isaiah
>> >
>> > [1]: for example:
>> >
>> > 0x0001bb00:   DW_TAG_subprogram [2]
>> >                 DW_AT_MIPS_linkage_name [DW_FORM_strp]  (
>> > .debug_str[0x00007934] = "julia_vcat4473")
>> >                 DW_AT_name [DW_FORM_strp]       (
>> .debug_str[0x00000913] =
>> > "vcat")
>> >
>> >
>> > [2]
>> >
>> https://github.com/llvm-mirror/llvm/blob/master/lib/DebugInfo/DWARFDebugInfoEntry.cpp#L279-L286
>> >
>> >
>>
>> If you just want the DW_AT_name you should be able to iterate over the
>> DIEs and pull out the DW_AT_name attribute from all of the subprogram
>> DIEs. Is there some other use that you're looking for? I'm not quite
>> sure what you're trying to accomplish.
>>
>> -eric
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-- 
Alexey Samsonov, Mountain View, CA
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