Systemtap fails on IA64

[Ananth N Mavinakayanahalli]

Keshavamurthy Anil S wrote:
> Hi,
> 	On IA64 (RHEL4 U2 system with stock kernel version 2.6.13 + few bug fixes), 
> I installed elfutils version 0.115-0.2 directly from sources and 
> systemtap snapshot version systemtap-20050903.tar.bz2, though I did not 
> had any problems compiling and installing elfutils/systemtap itself, 
> I am seeing problems when trying to run stap.
> 1) I see some stap unaligned access
> 2) and some errors and some undefined architecture
> 
> Here is the output, can any one let me know how can this be resolved.
> 

Anil,

Check for the arch specific bits under runtime/ specifically in copy.c,
fegs.h, loc2-runtime.c, stack.c, current.c. Also IA64 and ppc64 use
function descriptors and may need special handling in runtime.h too.

These are some places I see changes are needed. There may be others. I
just started relooking at it this afternoon.

Ananth