This is the result of the summer project of Tanish Desai.  It mostly
consists of changes to tracetool, which I used to add tracepoint support
to the pl011 device.  All the backends are supported except dtrace and
ust; support for Linux in dtrace should be easy using the "probe" crate,
the rest (ust, and dtrace on macOS or Solaris) less so.

Patches 1-2 are cleanups that could be committed separately.

Patches 3-5 are tracetool patches that have been posted before, now
rebased on top of the "make check-tracetool" series.  Their purpose
is to simplify .h code generation for tracetool backends, and these
simplifications translate directly to the new .rs code generation.

Patches 6-7 add the minimal support for adding tracepoint functions
in Rust, albeit with no content and thus no actual tracing.

Patches 8-9 add back tracepoints to the Rust pl011 device model.

Patches 10-14 finally add Rust code generation to the supported
tracing backends.

Many thanks to Daniel for his tracetool testsuite.  It was very
useful and did indeed improve reviewability!

Paolo

Based-on: <20250819161053.464641-1-berrange@redhat.com>

Paolo Bonzini (6):
  treewide: write "unsigned long int" instead of "long unsigned int"
  rust: move dependencies to rust/Cargo.toml
  trace/ftrace: move snprintf+write from tracepoints to ftrace.c
  rust: qdev: add minimal clock bindings
  rust: pl011: add tracepoints
  log: change qemu_loglevel to unsigned

Tanish Desai (8):
  tracetool: add CHECK_TRACE_EVENT_GET_STATE
  tracetool/backend: remove redundant trace event checks
  tracetool: Add Rust format support
  rust: add trace crate
  tracetool/simple: add Rust support
  tracetool/log: add Rust support
  tracetool/ftrace: add Rust support
  tracetool/syslog: add Rust support

 include/qemu/log-for-trace.h          |   4 +-
 include/qemu/log.h                    |  44 ++++----
 rust/qemu-api/wrapper.h               |   1 +
 tests/tracetool/ftrace.h              |  28 +----
 tests/tracetool/log.h                 |  16 ++-
 trace/ftrace.h                        |   1 +
 crypto/pbkdf-gcrypt.c                 |   2 +-
 crypto/pbkdf-gnutls.c                 |   2 +-
 crypto/pbkdf-nettle.c                 |   2 +-
 hw/display/exynos4210_fimd.c          |   2 +-
 hw/misc/imx7_src.c                    |   4 +-
 hw/net/can/can_sja1000.c              |   4 +-
 trace/ftrace.c                        |  15 +++
 util/log.c                            |   2 +-
 hw/char/trace-events                  |  14 +--
 hw/xen/trace-events                   |   4 +-
 rust/Cargo.lock                       |   8 ++
 rust/Cargo.toml                       |   6 +
 rust/hw/char/pl011/Cargo.toml         |   1 +
 rust/hw/char/pl011/meson.build        |   1 +
 rust/hw/char/pl011/src/device.rs      |  57 +++++++---
 rust/meson.build                      |   2 +-
 rust/qemu-api/Cargo.toml              |   6 +-
 rust/qemu-api/src/log.rs              |   2 +-
 rust/qemu-api/src/qdev.rs             |  33 ++++++
 rust/trace/Cargo.toml                 |  19 ++++
 rust/trace/meson.build                |  19 ++++
 rust/trace/src/lib.rs                 |  27 +++++
 scripts/tracetool/__init__.py         | 156 ++++++++++++++++++++++++++
 scripts/tracetool/backend/__init__.py |  39 +++++--
 scripts/tracetool/backend/ftrace.py   |  24 ++--
 scripts/tracetool/backend/log.py      |  20 ++--
 scripts/tracetool/backend/simple.py   |  15 ++-
 scripts/tracetool/backend/syslog.py   |  15 +--
 scripts/tracetool/format/h.py         |  11 +-
 scripts/tracetool/format/rs.py        |  76 +++++++++++++
 tests/tracetool/ftrace.rs             |  41 +++++++
 tests/tracetool/log.rs                |  45 ++++++++
 tests/tracetool/simple.rs             |  41 +++++++
 tests/tracetool/syslog.rs             |  41 +++++++
 tests/tracetool/tracetool-test.py     |   2 +
 trace/meson.build                     |   8 +-
 42 files changed, 718 insertions(+), 142 deletions(-)
 create mode 100644 rust/trace/Cargo.toml
 create mode 100644 rust/trace/meson.build
 create mode 100644 rust/trace/src/lib.rs
 create mode 100644 scripts/tracetool/format/rs.py
 create mode 100644 tests/tracetool/ftrace.rs
 create mode 100644 tests/tracetool/log.rs
 create mode 100644 tests/tracetool/simple.rs
 create mode 100644 tests/tracetool/syslog.rs

-- 
2.50.1