Internships/ProjectIdeas/CentralRegisterRegistry

Central Register Registry

Summary: Provide a new internal API for accessing register values

Currently there are a number of places that need to access guest register values including:

• -d cpu output
• hmp/qmp info registers
• gdbstub

and places that would like to access the register values like the TCG plugins sub-system.

Currently this is all handled by each individual front-end interfacing to the various sub-systems. It's time to bring that functionality under a single roof so front-ends just notify a central registry of how to access values and the central code can deal with interfacing with the other subsystems. Then quality of life improvements could be added like:

• customising the registers the -d cpu displays
• giving access to other registers in QMP/HMP
• de-duplicating the GDB XML generation for extra registers
• hooking in TCG plugins

Links:

Details:

• Skill level: intermediate
• Language: C
• Mentor: Alex Bennée <alex.bennee@linaro.org> ("stsquad" on IRC)
• Suggested by: Alex Bennée