Sparc/C2 - Cloudscape: vm/os_solaris.cpp, 1937

This is a bug for HotSPARC server VM(compiler2).
This run use the latest fastdebug binary, which is Sep 27, 1999.

The same failure appear in mixed & comp mode. int mode pass
without any error.

Step to reproduce the bug.
1. install jdk122fcs
2. cd /home/fhsu/HotSparc/csp/sun4u_5.6_bug
3. cloudscape will use JDK under following directory.
   /home/fhsu/HotSparc/csp/sun4u_5.6_bug/env/jdk12/solaris
   To use your own JDK, you can remove
   /home/fhsu/HotSparc/csp/sun4u_5.6_bug/env
   (which is a soft link)
   and link the /home/fhsu/HotSparc/csp/sun4u_5.6_bug/env/jdk12/solaris
   to the JDK(JAVA_HOME) you want to use.
4. copy your binary into your JDK
5. if you want to add VM flags, modify export SYSTEST_JAVAFLAGS="-X${1}"
   in setenv.ksh
6. use ./runme.bash [mixed|comp] to start mixed or comp mode.
7. To see the result, open another windows and
   "tail -f systest/out/runall.diff", which is output of the test.

You should run into following bug within 15 minutes.

> #
> # HotSpot Virtual Machine Error, Unexpected Signal 10
> #
> # occurred at pc=92e04
> #
> # Error ID: /export/disk4/mojave/fhsu/binary/sparc2.0_nightly/build/solaris/../../src/os/solaris/vm/os_solaris.cpp, 1937 [ Patched ]
> #
> Dumping core....