This PR extends the plugin API with two functions which allow convenient access
around tbs.
The first, qemu_plugin_tb_size, provides a mechanism for determining the total
size of a translation block.
The second, qemu_plugin_tb_get_insn_by_vaddr, allows users to get a reference
to an instruction by its virtual address rather than just its index.
In response to feedback from Pierrick I have updated the implementation of
qemu_plugin_tb_size.
Additionally, I have added these functions to the insn.c test plugin in
response to Alex's feedback.
Lastly, I'll provide a reply to Alex's feeback (repeated below):
> But the general comment is this is an example of tying the plugin API
> too deeply with the internals of the translator. Why does a plugin need
> to know what is an implementation detail?
Finding the line between implementation detail and relevant to plugins is
challenging, but I submitted this change because I found myself implementing
these functions in plugins. If you'd like for me to enumerate examples where
knowing the tb_size is relevant to analysis I'd be happy to submit some.
The change relevant from v2 and v3 is adding a sign off on the commits (thank you Perrick).
Luke Craig (3):
plugin: extend API with qemu_plugin_tb_get_insn_by_vaddr
plugin: extend API with qemu_plugin_tb_size
plugins: extend insn test for new convenience functions
include/qemu/qemu-plugin.h | 21 +++++++++++++++++++++
plugins/api.c | 20 ++++++++++++++++++++
tests/tcg/plugins/insn.c | 10 ++++++++++
3 files changed, 51 insertions(+)
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2.34.1