[PATCH v2 0/5] Add support for AArch64 MOPS instructions

[Thiago Jung Bauermann <thiago.bauermann@linaro.org>]

Hello,

I'm sending v2 because Christophe made a suggestion for the
gdb.arch/aarch64-mops-atomic-inst.exp testcase, so patch 4 incoroporates
it.

The other patches are unchanged from v1.

Here is the original cover letter for convenience:

This patch series implements GDB support for the new instructions in
AArch64's MOPS feature.  Patch 1 has a small overview.

What is needed from GDB is recognizing the MOPS sequences of instructions
as atomic so that they can be stepped over during instruction single
stepping, and also to avoid doing displaced stepping with them.  This is
done in patch 1.

Patch 2 adds support for the new instructions to the record an replay
target.

The other patches add testcases to test each of the aspects above, plus
one testcase to verify the interaction of the MOPS instructions with
watchpoints.

Tested on Ubuntu 23.10 aarch64-linux-gnu with no regressions, using the
Arm FVP emulator as well as QEMU v8.2.

Thiago Jung Bauermann (5):
  gdb/aarch64: Implement software single stepping for MOPS instructions
  gdb/aarch64: Add record support for MOPS instructions.
  gdb/testsuite: Add gdb.arch/aarch64-mops-watchpoint.exp
  gdb/testsuite: Add gdb.arch/aarch64-mops-atomic-inst.exp
  gdb/testsuite: Add gdb.reverse/aarch64-mops.exp

 gdb/aarch64-tdep.c                            | 191 +++++++++++++++++-
 .../gdb.arch/aarch64-mops-atomic-inst.c       |  69 +++++++
 .../gdb.arch/aarch64-mops-atomic-inst.exp     |  94 +++++++++
 .../gdb.arch/aarch64-mops-watchpoint.c        |  66 ++++++
 .../gdb.arch/aarch64-mops-watchpoint.exp      |  79 ++++++++
 gdb/testsuite/gdb.reverse/aarch64-mops.c      |  71 +++++++
 gdb/testsuite/gdb.reverse/aarch64-mops.exp    | 171 ++++++++++++++++
 gdb/testsuite/lib/gdb.exp                     |  61 ++++++
 8 files changed, 800 insertions(+), 2 deletions(-)
 create mode 100644 gdb/testsuite/gdb.arch/aarch64-mops-atomic-inst.c
 create mode 100644 gdb/testsuite/gdb.arch/aarch64-mops-atomic-inst.exp
 create mode 100644 gdb/testsuite/gdb.arch/aarch64-mops-watchpoint.c
 create mode 100644 gdb/testsuite/gdb.arch/aarch64-mops-watchpoint.exp
 create mode 100644 gdb/testsuite/gdb.reverse/aarch64-mops.c
 create mode 100644 gdb/testsuite/gdb.reverse/aarch64-mops.exp


base-commit: 84a069db6714ddcf444095ed09dbcd7404834694