SH: ____longjmp_chk for GNU/Linux with sigaltstack support

[Kaz Kojima]

Thomas Schwinge <thomas@codesourcery.com> wrote:
> This one is based on Joseph's suggestions as posted in
> <http://sourceware.org/ml/libc-ports/2009-08/msg00002.html>; a part of
> the following assembler bits are what ,A;gcc -O2 -S,A+ produced for Joseph's
> C code.  No regressions and debug/tst-longjmp_chk2 now passes -- Kaz,
> would you please review this patch?

Looks fine to me.

Regards,
	kaz