Hi,

   I tried:  stap -e 'probe addevent.* {}' -bM -v
on ppc64/RHEL4u4/gcc-3.4.6,  and got a lot of errors of "operand out 
of range".

   the generated c file is really big:

root:/tmp/stapRl4mJy> ll -h
total 7.5M
-rw-r--r--  1 root root  128 Oct  9 17:53 Makefile
-rw-r--r--  1 root root 6.3M Oct  9 17:53 stap_11644.c
-rw-r--r--  1 root root 714K Oct  9 17:53 stap-symbols.h
-rw-r--r--  1 root root 527K Oct  9 17:53 symbols.sorted

   I searched gcc bugzilla, and found someone reported the same kind 
of error on gcc 4.1:
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=28904

   I think it's common for SystemTap to generate a large c file if the 
number of probes and functions turned on is big. I tried on i386 and 
it doesn't have this error. Does anyone know if there is any 
alternative to avoid such error for ppc64?

   thanks.

- Guanglei