[Bug runtime/4037] make staprun 32/64-bit interoperable

["dsmith at redhat dot com" <sourceware-bugzilla@sourceware.org>]

------- Additional Comments From dsmith at redhat dot com  2009-11-16 20:47 -------
I've tested this issue for x86/x86_64, by testing 32-bit x86 binaries on an
64-bit x86_64 system.  To ensure I was testing 32-bit executables, I built x86
rpms on the x86 system, then installed them on the x86_64 system.

The testsuite results looked very similar to 64-bit testsuite results.

Looking at the message definitions in runtime/transport/transport_msgs.h, it
appears that they all are in the form int32_t/int64_t which looks correct. 
There are no plain 'int' or 'long' types there.

Using '-DDEBUG_SYMBOLS' to see what sort of addresses the 32-bit staprun is
sending the kernel shows this:

# stap -DDEBUG_SYMBOLS -e 'probe kernel.function("sys_open") { printf("open\n") }'
(02:29:45 PM) dsmith: _stp_module_relocate:79: kernel, _stext, 30690
(02:29:45 PM) dsmith: _stp_module_relocate:107: address=ffffffff80031690

That address is a 64-bit address, which is correct.

-- 


http://sourceware.org/bugzilla/show_bug.cgi?id=4037

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