__thread support in RTEMS gcc

Fri Jun 11 00:34:23 UTC 2010

It seems that RTEMS C code doesn't support the
GNU __thread extension for TLS. I mean, it lets
you use __thread syntactically, and the elf file
even shows the symbol as being TLS, but thread local
storage doesn't work. Any idea why ? Can support
for __thread be added easily ?

By the way, I am aware of task-variables for RTEMS.
I just want to know why __thread is not supported.
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