In programs with dynamic linker, _main and thus also platform_main_bootstrap
are called twice. By now, platform_main_bootstrap tried to always access the
startup message in the UTCB of the main thread that gets overridden till the
second call.
fix#967
Every thread receives a startup message from its creator through the initial
state of its userland thread-context. The thread-startup code remembers the
kernel name of the new thread by reading this message before the userland
thread-context gets polluted. This way, Kernel::current_thread_id becomes
unnecessary.
fix#953
To prevent multiple execution of main-bootstrap, I moved the code to a
statically initialized object. The reason for this change is that
_main() is exeuted twice when starting dynamic binaries. Now, the object
is part of the base-common library which is linked with ld.lib.so.
Martin Stein
Christian Helmuth