Hi,
Thanks for double checking. Adding Jakub to CC, see below.
On Wed, 2012-10-10 at 08:56 +0200, Petr Machata wrote:
Jan Kratochvil <jan.kratochvil(a)redhat.com> writes:
> On Tue, 09 Oct 2012 22:50:20 +0200, Petr Machata wrote:
>> Mark Wielaard <mjw(a)redhat.com> writes:
>> > Do you happen to know where
>> > DW_OP_GNU_reinterpret is described, I assumed it was part of
>> >
http://www.dwarfstd.org/doc/040408.1.html but it isn't in there.
>>
>> No, it isn't, I didn't find it anywhere else but in elfutils. It's
not
>> even in my test binary, only DW_OP_GNU_convert is.
>
> DW_OP_GNU_convert is handled by GDB:
As well as DW_OP_GNU_reinterpret, great:
.byte 0xf7 # DW_OP_GNU_convert
.uleb128 0x29
.byte 0xf9 # DW_OP_GNU_reinterpret
.uleb128 0x37
So yeah, they both have the same arguments.
OK, and I just found gcc/dwarf2out.c does indeed seem to generate it.
But I am not fully clear on why convert cannot always be used.
Jakub, is there a "official" description for DW_OP_GNU_reinterpret?
And/Or is there a newer document describing the typed DWARF stack
extensions?
Thanks,
Mark