On Sun, Feb 13, 2011 at 5:48 AM, felix.matenaar@rwth-aachen <felix.maten...@rwth-aachen.de> wrote: > Hello everyone, > > i am working on a project adding instrumentation into qemu. My approach > is to use gen_helper stuff do hook specific opcodes like call or ret to > gain information about running processes in the virtual machine. > > Today I noticed that the CPUState* env is not in all cases up-to-date > when my hooks are called on block execution. That makes totally sense > since blocks are natively executed in one step as far as I understood so > there is no code which would keep the cpu environment up-to-date. > > To achieve my goal, it is necessary being able reading actual register > configuration like eax when a ret hook is called to get a function > return value. So my question is how I can do this. Are there already > some functions which generate code to update the cpu environment? If > not, is there anything you can point me towards for adding support?
Without seeing your code, you are probably confusing translation phase and executing the code generated by TCG.
