[RFC][PATCH 0/1] Add support for embedded source in GDB

[Will Hawkins <hawkinsw@obs.cr>]

Hello everyone!

First, thank you for all that you do to keep gdb the best open-source debugger
available. I am a long-time user and minor contributor. This is my first
major-ish contribution.

Second, I know that cover letters are not generally encouraged but because this
patch is an RFC, I thought it would be a good opportunity to introduce the
patch's current status.

As it stands, DWARF has not finalized the DW_LNCT_source. However, LLVM does
emit it, when asked. It would be great if gdb supported it. This patch adds
support for the to-be-standardized version and the vendor extension that LLVM
currently uses.

If this is something that you think gdb would like to add, then I am happy to
continue cleaning up this patch by
- cleaning up the included test
- adding additional tests
- handling corner cases that I am sure you will discover.

I just wanted to pass this along early to get your sense of things.

I have attempted to follow all the coding guidelines and the best practices but
I know that I have probably fallen short. Again, if this is something that you
think you would like to see in gdb, I am 100% willing to learn from you and get
this into better shape.

No matter what, thank you again for all your volunteer work to keep gdb going.

Will

Will Hawkins (1):
  gdb: Support embedded source in DWARF

 gdb/dwarf2/line-header.c                     | 22 +++--
 gdb/dwarf2/line-header.h                     |  9 ++-
 gdb/dwarf2/read.c                            | 11 ++-
 gdb/source.c                                 | 73 ++++++++++++++++-
 gdb/source.h                                 |  4 +
 gdb/symtab.h                                 |  2 +
 gdb/testsuite/gdb.dwarf2/dw2-lnct-source.c   | 24 ++++++
 gdb/testsuite/gdb.dwarf2/dw2-lnct-source.exp | 85 ++++++++++++++++++++
 gdb/testsuite/lib/dwarf.exp                  | 14 +++-
 include/dwarf2.h                             |  2 +
 10 files changed, 227 insertions(+), 19 deletions(-)
 create mode 100644 gdb/testsuite/gdb.dwarf2/dw2-lnct-source.c
 create mode 100644 gdb/testsuite/gdb.dwarf2/dw2-lnct-source.exp

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2.44.0