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Re: PowerPC PLT stub matching

From: Alan Modra <amodra at gmail dot com>
To: Yao Qi <qiyaoltc at gmail dot com>
Cc: gdb-patches at sourceware dot org
Date: Fri, 26 Jan 2018 16:12:01 +1030
Subject: Re: PowerPC PLT stub matching
Authentication-results: sourceware.org; auth=none
References: <20180124062015.GN20622@bubble.grove.modra.org> <864lnbdyxh.fsf@gmail.com>

On Wed, Jan 24, 2018 at 04:06:02PM +0000, Yao Qi wrote:
> These instruction sequences reflect what
> bfd/elf32-ppc.c:write_glink_stub does, IIUC.

Yes, and gold/powerpc.cc:Stub_table::do_write.

>  Is there any way we can
> correlate these two sides, PLT stub generation and matching?  Ideally, I
> want to such sequences are defined once, but shared by linker and debugger.

It might be possible, but I think the resulting data structure and
code would be a mess, particularly for ppc64 given the number of
variations of PLT stubs.

Thanks for the review!  Committed.

-- 
Alan Modra
Australia Development Lab, IBM

References:
- PowerPC PLT stub matching
  - From: Alan Modra
- Re: PowerPC PLT stub matching
  - From: Yao Qi

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