This series adds support for Tensilica Xtensa target.
Port status: Linux for DC232B works in the qemu.
Not implemented xtensa options: MAC16,
floating point coprocessor, cache option, debug option.
v4 -> v5 changes:
- implement boolean option;
- fix v4 stylistical issues (underscores, comparison order, missing braces);
- turn WINDOWBASE_BOUND and WINDOWSTART_BIT macros into inline functions;
- convert sample boards to memory API.
Git tree is available at git://jcmvbkbc.spb.ru/dumb/qemu-xtensa.git xtensa