[v4,00/29] maintainer updates for 9.0 pre-PR (tests, plugin register support)

Message

Alex Bennée Feb. 27, 2024, 2:43 p.m. UTC

The test patch is a simple house keeping one to clean up some
inadvertent GPLv3 tagging to GPLv2-or-later. I've also increased the
timeout for check-tcg due to TCI timeouts.

The main bulk of this series is register reading support for TCG
plugins. The main change to the API is that the get/read_register
functions are now implicitly vCPU context only so have dropped the
vcpu index parameter and use current_cpu instead. This avoids the need
for locking the gdbstub structures in case there is a cross-vCPU
access.

I've pulled in some patches from Pierrick's inline enhancement series
that allow this to happen (making sure the init callback is in the
vCPU context).

Changes for v4

Addressed final comments from Akihiko
Added BSD changes

Changes for v3:

Now we just use GINT_TO_POINTER to wrap the gdb_regnum with a comment
this might become and opaque structure later. Either way the plugin
shouldn't treat it like anything other than an anonymous handle.

The following still need review:

  tests/tcg: expand insn test case to exercise register API
  gdbstub: expose api to find registers
  tests/vm: update openbsd image to 7.4 (0 acks, 1 sobs, 1 tbs)
  tests/vm: avoid re-building the VM images all the time

But I'd like to get this merged soon so its not a mad rush before soft
freeze and so we can get the new inline support stabilised and merged.

Alex.

Akihiko Odaki (11):
  target/arm: Use GDBFeature for dynamic XML
  target/ppc: Use GDBFeature for dynamic XML
  target/riscv: Use GDBFeature for dynamic XML
  gdbstub: Use GDBFeature for gdb_register_coprocessor
  gdbstub: Use GDBFeature for GDBRegisterState
  gdbstub: Change gdb_get_reg_cb and gdb_set_reg_cb
  gdbstub: Simplify XML lookup
  gdbstub: Infer number of core registers from XML
  hw/core/cpu: Remove gdb_get_dynamic_xml member
  gdbstub: Add members to identify registers to GDBFeature
  plugins: Use different helpers when reading registers

Alex Bennée (13):
  tests/tcg: update licenses to GPLv2 as intended
  tests/tcg: bump TCG test timeout to 120s
  tests/vm: avoid re-building the VM images all the time
  tests/vm: update openbsd image to 7.4
  linux-user: ensure nios2 processes queued work
  gdbstub: expose api to find registers
  plugins: create CPUPluginState and migrate plugin_mask
  plugins: add an API to read registers
  tests/tcg: expand insn test case to exercise register API
  contrib/plugins: fix imatch
  contrib/plugins: extend execlog to track register changes
  docs/devel: lift example and plugin API sections up
  docs/devel: document some plugin assumptions

Pierrick Bouvier (5):
  plugins: remove previous n_vcpus functions from API
  plugins: add qemu_plugin_num_vcpus function
  plugins: fix order of init/idle/resume callback
  cpu: call plugin init hook asynchronously
  docs/devel: plugins can trigger a tb flush

 docs/devel/multi-thread-tcg.rst               |   1 +
 docs/devel/tcg-plugins.rst                    |  72 +++-
 accel/tcg/plugin-helpers.h                    |   3 +-
 include/exec/gdbstub.h                        |  43 ++-
 include/hw/core/cpu.h                         |  18 +-
 include/qemu/plugin.h                         |  14 +
 include/qemu/qemu-plugin.h                    |  59 +++-
 include/qemu/typedefs.h                       |   1 +
 plugins/plugin.h                              |   6 +-
 target/arm/cpu.h                              |  27 +-
 target/arm/internals.h                        |  14 +-
 target/hexagon/internal.h                     |   4 +-
 target/microblaze/cpu.h                       |   4 +-
 target/ppc/cpu-qom.h                          |   1 +
 target/ppc/cpu.h                              |   5 +-
 target/riscv/cpu.h                            |   5 +-
 target/s390x/cpu.h                            |   2 -
 tests/tcg/aarch64/semicall.h                  |   4 +-
 tests/tcg/arm/semicall.h                      |   4 +-
 tests/tcg/multiarch/float_helpers.h           |   4 +-
 tests/tcg/riscv64/semicall.h                  |   4 +-
 accel/tcg/plugin-gen.c                        |  46 ++-
 contrib/plugins/cache.c                       |   2 +-
 contrib/plugins/execlog.c                     | 318 +++++++++++++++---
 gdbstub/gdbstub.c                             | 169 ++++++----
 hw/core/cpu-common.c                          |  19 +-
 linux-user/nios2/cpu_loop.c                   |   1 +
 plugins/api.c                                 |  96 ++++--
 plugins/core.c                                |  28 +-
 target/arm/cpu.c                              |   2 -
 target/arm/cpu64.c                            |   1 -
 target/arm/gdbstub.c                          | 230 ++++++-------
 target/arm/gdbstub64.c                        | 122 +++----
 target/avr/cpu.c                              |   1 -
 target/hexagon/cpu.c                          |   4 +-
 target/hexagon/gdbstub.c                      |  10 +-
 target/i386/cpu.c                             |   2 -
 target/loongarch/cpu.c                        |   2 -
 target/loongarch/gdbstub.c                    |  13 +-
 target/m68k/cpu.c                             |   1 -
 target/m68k/helper.c                          |  26 +-
 target/microblaze/cpu.c                       |   6 +-
 target/microblaze/gdbstub.c                   |  14 +-
 target/ppc/cpu_init.c                         |   7 -
 target/ppc/gdbstub.c                          | 114 ++++---
 target/riscv/cpu.c                            |  15 -
 target/riscv/gdbstub.c                        | 145 ++++----
 target/rx/cpu.c                               |   1 -
 target/s390x/cpu.c                            |   1 -
 target/s390x/gdbstub.c                        | 105 +++---
 tests/plugin/insn.c                           |  21 ++
 .../multiarch/arm-compat-semi/semiconsole.c   |   4 +-
 .../multiarch/arm-compat-semi/semihosting.c   |   4 +-
 tests/tcg/multiarch/float_convd.c             |   4 +-
 tests/tcg/multiarch/float_convs.c             |   4 +-
 tests/tcg/multiarch/float_madds.c             |   4 +-
 tests/tcg/multiarch/libs/float_helpers.c      |   4 +-
 plugins/qemu-plugins.symbols                  |   5 +-
 scripts/feature_to_c.py                       |  14 +-
 tests/tcg/Makefile.target                     |   9 +-
 tests/tcg/i386/system/boot.S                  |   6 +-
 tests/tcg/x86_64/system/boot.S                |   6 +-
 tests/vm/Makefile.include                     |   2 +-
 tests/vm/basevm.py                            |   4 +-
 tests/vm/openbsd                              |   9 +-
 65 files changed, 1235 insertions(+), 661 deletions(-)