* spu/sbrk.c: Use the current stack pointer value rather than the maximum available memory to determine the amount of heap space left. Without this change calling sbrk() can allocate space that is currently in use on the stack.
that GCC runtime stack checking works. Handle the backchain, too.
* configure.in: Add spu support. * configure: Regenerated. * spu/Makefile.in: New file. * spu/aclocal.m4: Ditto. * spu/configure: Ditto. * spu/configure.in: Ditto. * spu/crt0.c: Ditto. * spu/exit.c: Ditto. * spu/init.c: Ditto. * spu/jsre.h: Ditto. * spu/sbrk.c: Ditto. * spu/syscalls.c: Ditto.