Where is op_model_mipsxx.c ?

[David Daney <ddaney@avtrex.com>]

I noticed this in the Makefile for the OProfile directory for mips:

oprofile-$(CONFIG_CPU_MIPS32_R1)                += op_model_mipsxx.o

The file op_model_mipsxx.c does not seem to exist.  Which implies to me 
that someone was working on making it work for MIPS32, but didn't quite 
finish.
I want to start hacking on OProfile for a MIPS32 based system and 
thought it might make a nice starting point.
If the missing file exists would its author mind making it available to me?

Thanks,
David Daney