[RFC PATCH 0/5] gdb/aarch64: Support for FPMR

[<Ezra.Sitorus@arm.com>]

From: Ezra Sitorus <ezra.sitorus@arm.com>

The Floating Point Mode Register (FPMR) determines the behaviour of FP8
instructions. This patch series adds support for this register into gdb.

This has been tested using Shrinkwrap, which allows me to run Linux on a
model of an Arm system with new features. You can find more information
here: [1].

This is an RFC becauase there are a few things I'm not clear on - the
main thing being testing. In the final patch I've outlined my thoughts
in the message. 

I'd also appreciate any feedback regarding anything I can do better
here and also if I'm missing anything out.

Ezra

[1]: https://shrinkwrap.docs.arm.com/en/latest/

Ezra Sitorus (5):
  gdb/aarch64: Enable FPMR for AArch64 in gdb on Linux
  gdbserver/aarch64: Enable FPMR for AArch64 in gdbserver on Linux
  gdb/aarch64: signal frame support for fpmr
  gdb/aarch64: core file support for FPMR
  gdb/aarch64: Tests for fpmr

 gdb/aarch64-linux-nat.c                       |  58 ++++++-
 gdb/aarch64-linux-tdep.c                      | 103 ++++++++++++-
 gdb/aarch64-tdep.c                            |  18 ++-
 gdb/aarch64-tdep.h                            |   7 +
 gdb/arch/aarch64.c                            |   4 +
 gdb/arch/aarch64.h                            |   4 +-
 gdb/features/Makefile                         |   1 +
 gdb/features/aarch64-fpmr.c                   |  44 ++++++
 gdb/features/aarch64-fpmr.xml                 |  55 +++++++
 gdb/testsuite/gdb.arch/aarch64-fpmr-core.c    | 109 +++++++++++++
 gdb/testsuite/gdb.arch/aarch64-fpmr-core.exp  | 143 ++++++++++++++++++
 .../gdb.arch/aarch64-fpmr-sighandler.c        | 134 ++++++++++++++++
 .../gdb.arch/aarch64-fpmr-sighandler.exp      |  75 +++++++++
 gdb/testsuite/gdb.arch/aarch64-fpmr.c         | 117 ++++++++++++++
 gdb/testsuite/gdb.arch/aarch64-fpmr.exp       | 116 ++++++++++++++
 gdb/testsuite/lib/gdb.exp                     |  49 ++++++
 gdbserver/linux-aarch64-low.cc                |  29 ++++
 17 files changed, 1061 insertions(+), 5 deletions(-)
 create mode 100644 gdb/features/aarch64-fpmr.c
 create mode 100644 gdb/features/aarch64-fpmr.xml
 create mode 100644 gdb/testsuite/gdb.arch/aarch64-fpmr-core.c
 create mode 100644 gdb/testsuite/gdb.arch/aarch64-fpmr-core.exp
 create mode 100644 gdb/testsuite/gdb.arch/aarch64-fpmr-sighandler.c
 create mode 100644 gdb/testsuite/gdb.arch/aarch64-fpmr-sighandler.exp
 create mode 100644 gdb/testsuite/gdb.arch/aarch64-fpmr.c
 create mode 100644 gdb/testsuite/gdb.arch/aarch64-fpmr.exp

-- 
2.45.2