tree b5b0ea4b2635e94f7cf3f5fe3da276d99f82bbec
parent dac981740f4b990eadf523b0900859f189dd2b4e
author Mike Frysinger <vapier@gentoo.org> 1250535907 +0000
committer Mike Frysinger <vapier@gentoo.org> 1253153428 -0400

Blackfin: optimize fixed code handling for the most common case

The majority of the time we are returning to user space, it is not in the
fixed atomic code region.  So rather than branch to a function where we
check the PC and return, do the check inline and branch only when needed.

Also, tweak some of the fixed code handling based on assumptions we are
aware of but cannot be expressed in C.

Signed-off-by: Mike Frysinger <vapier@gentoo.org>