This series allows plugins to know which value is read/written during a memory access.
For every memory access, we know copy this value before calling mem callbacks, and those can query it using new API functions: - qemu_plugin_mem_get_value_upper_bits - qemu_plugin_mem_get_value_lower_bits Mem plugin was extended to print accesses, and a new test was added to check functionality work as expected. A bug was found where callbacks were not called as expected. This will open new use cases for plugins, such as following specific values in memory. v2 -- fix compilation on aarch64 (missing undef in accel/tcg/atomic_template.h) Pierrick Bouvier (7): plugins: fix mem callback array size plugins: save value during memory accesses plugins: extend API to get latest memory value accessed tests/tcg: add mechanism to run specific tests with plugins tests/tcg: allow to check output of plugins tests/plugin/mem: add option to print memory accesses tests/tcg/x86_64: add test for plugin memory access accel/tcg/atomic_template.h | 66 +++++++++++++-- include/qemu/plugin.h | 8 ++ include/qemu/qemu-plugin.h | 20 +++++ accel/tcg/plugin-gen.c | 3 +- plugins/api.c | 21 +++++ plugins/core.c | 7 ++ tcg/tcg-op-ldst.c | 72 +++++++++++++++-- tests/plugin/mem.c | 28 ++++++- tests/tcg/x86_64/test-plugin-mem-access.c | 89 +++++++++++++++++++++ accel/tcg/atomic_common.c.inc | 13 ++- accel/tcg/ldst_common.c.inc | 38 +++++---- plugins/qemu-plugins.symbols | 2 + tests/tcg/Makefile.target | 8 +- tests/tcg/x86_64/Makefile.target | 7 ++ tests/tcg/x86_64/check-plugin-mem-access.sh | 48 +++++++++++ 15 files changed, 395 insertions(+), 35 deletions(-) create mode 100644 tests/tcg/x86_64/test-plugin-mem-access.c create mode 100755 tests/tcg/x86_64/check-plugin-mem-access.sh -- 2.39.2
