Re: [Qemu-devel] Using qemu to profile ARM binaries

[Wei-Ren Chen]

> I'm trying to edit the qemu source code so I can use qemu as a profiler for a
> benchmark of ARM programs. A good start would be counting loads, stores, int
> ops, float ops and branch instructions used by each of the binary files. I 
> have
> two (related) questions:
> 
> 1. Where in the qemu implementation would be best to count instructions? My
> first thought is to count TCG instructions before they are sent for 
> translation
> into host code, although it could maybe be done before translation from ARM to
> TCG instructions as well.

  Doesn't "-d" option help you?
 
> 2. What's the corresponding folder/file(s) in the source code where I can add
> code for profiling?

  target-arm/* would be the place since you're running ARM binary, tcg/ARCH/*
could be another place depends on what machine you're running QEMU on.

Regards,
chenwj

-- 
Wei-Ren Chen (陳韋任)
Computer Systems Lab, Institute of Information Science,
Academia Sinica, Taiwan (R.O.C.)
Tel:886-2-2788-3799 #1667
Homepage: http://people.cs.nctu.edu.tw/~chenwj