[review v2] jit: remove bp locations when unregistering jit code

[Simon Marchi (Code Review)]

Simon Marchi has posted comments on this change.

Change URL: https://gnutoolchain-gerrit.osci.io/r/c/binutils-gdb/+/704
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Patch Set 2:

> Patch Set 2:
> 
> FYI: I came up with a stupid enough hack to make dwarf adjustment work but after rebasing on latest master I see a rather different behavior for breakpoints. Will investigate that and hopefully update the patch in a few days.

Ok, and now that I'm a bit more familiar with the JIT interface/subsystem, it is also on my todo list to try to reproduce the issue using plain x86-64 code.  When using the JIT debug reader interface, it's possible to give symtabs names (e.g. "foo.c"), add line <-> mappings, and then place breakpoints by line (e.g. "foo.c:4").  I intend to try it like this first.

I also intend to look into why it's not possible to place breakpoints on the symbols defined by the JIT debug reader interface.  I find it surprising, and think it would make sense / be helpful to be able to do so.  If we make it possible, then we'll have a second way to try to reproduce this bug, by placing breakpoints by function name rather than line.


-- 
Gerrit-Project: binutils-gdb
Gerrit-Branch: master
Gerrit-Change-Id: Id9133540d67fa0c4619ac88324b0349b89e4b2b1
Gerrit-Change-Number: 704
Gerrit-PatchSet: 2
Gerrit-Owner: Mihails Strasuns <mihails.strasuns@intel.com>
Gerrit-Reviewer: Mihails Strasuns <mihails.strasuns@intel.com>
Gerrit-Reviewer: Pedro Alves <palves@redhat.com>
Gerrit-Reviewer: Tom Tromey <tromey@sourceware.org>
Gerrit-CC: Luis Machado <luis.machado@linaro.org>
Gerrit-CC: Simon Marchi <simon.marchi@polymtl.ca>
Gerrit-Comment-Date: Wed, 18 Dec 2019 17:32:51 +0000
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