Re: [PATCH v1 5/6] objtool: Add skipped member in struct reloc

From: Xi Ruoyao
Date: Wed Aug 09 2023 - 07:52:08 EST


On Thu, 2023-08-03 at 14:11 +0200, Peter Zijlstra wrote:
> On Thu, Aug 03, 2023 at 07:36:24PM +0800, Tiezhu Yang wrote:
>
> > >                         ".long " __stringify_label(c) "b - .\n\t"          \
>
> > I discussed offline with the engineers who are familiar with gnu
> > assembler of LoongArch, maybe it can modify the gnu assembler
> > to use R_LARCH_32_PCREL to replace a pair of R_LARCH_ADD32 and
> > R_LARCH_SUB32, then I will test it again and drop this change if
> > possible.

Hmm, but I don't like the idea to disallow users having GAS <= 2.41 from
using ORC unwinder.

Can we emit the R_LARCH_32_PCREL reloc with an explicit .reloc
directive?

> Yes, this is exactly what PC relative relocations are for.


--
Xi Ruoyao <xry111@xxxxxxxxxxx>
School of Aerospace Science and Technology, Xidian University