nightly test in ppc64

[Hien Nguyen <hien at us dot ibm dot com>]

Nightly test summary

FAIL: ./systemtap.base/kmodule.stp compilation
FAIL: probefunc:kernel.statement(0xc000000000058228) shutdown (eof)
FAIL: ./systemtap.samples/tcptest.stp startup (eof)
FAIL: ./systemtap.stress/current.stp compilation

Running ./systemtap.syscall/test.exp ...
FAIL: acct - I fixed this problem, will check in the fix (ppc64/syscall.stp)
FAIL: chmod - see Note #1 below.
FAIL: dir - see Note #1 below.
FAIL: mmap - see Note #1 below.
FAIL: mount - test case looks for sys_mount where ppc64 use 
compat_sys_mount. will  check in fix  (ppc64/syscall.stp)
FAIL: openclose - see Note #1 below.
FAIL: readwrite - test case
FAIL: signal - Fixed (ppc64/syscall.stp)
FAIL: stat -
FAIL: statfs
FAIL: uid
FAIL: umask - Fixed (ppc64/syscall.stp)
FAIL: unlink - Fixed (ppc64/syscall.stp)

Notes:
1) On ppc64, the test cases actually exercise sys32_open. I added the 
another alias to sys32_open but I run into the user_string($filename) 
failure. It seems to get a bad address, I am not sure why.

stap -e'probe syscall.sys32_open{log(argstr)}' -c ./openclose
"/etc/ld.so.cache", O_RDONLY
"/lib/libtermcap.so.2", O_RDONLY
"/lib/libdl.so.2", O_RDONLY
"/lib/tls/libc.so.6", O_RDONLY
ERROR: user string copy fault at 0x00000000100 near identifier 
'$filename' at 
/root/stap_testing_200606261509/src/tapset/ppc64/syscalls.stp:991:25
WARNING: Number of errors: 1, skipped probes: 1

print the user addresses for the same test show that

"[0xffe5e00]", O_RDONLY
"[0xf7fe8c9d]", O_RDONLY
"[0xf7ff85e7]", O_RDONLY
"[0xf7ff9994]", O_RDONLY
"[0x1009730c]", O_RDWR|O_LARGEFILE|O_NONBLOCK    <------- error here
"[0xff8cad8]", O_RDONLY
"[0xffffbf80]", O_RDONLY

2) After adding a few more probe aliases to the system call tapset, I 
encounter these compilation error when doing this "probe syscall.*{}"
[....]
{standard input}:940330: Error: operand out of range (0x0000000000008fa8 
is not between 0xffffffffffff8000 and 0x0000000000007fff)
{standard input}:940423: Error: operand out of range (0x0000000000008fb0 
is not between 0xffffffffffff8000 and 0x0000000000007fff)
{standard input}:940584: Error: operand out of range (0x0000000000008fb8 
is not between 0xffffffffffff8000 and 0x0000000000007fff)
{standard input}:940595: Error: operand out of range (0x0000000000008fc0 
is not between 0xffffffffffff8000 and 0x0000000000007fff)

if I remove them some of the probe aliases then, it compiled. Li 
GuangLei, I wonder that  you see the samething.