tree cbdb9e9b760429016a31e1dca3b115548dbebc0a
parent e6e6c46d759cd013cb57eba112a4129a3a353c4b
author Chris Metcalf <cmetcalf@tilera.com> 1284563768 -0400
committer Chris Metcalf <cmetcalf@tilera.com> 1284563768 -0400

arch/tile: Change struct sigcontext to be more useful

Rather than just using pt_regs, it now contains the actual saved
state explicitly, similar to pt_regs.  By doing it this way, we
provide a cleaner API for userspace (or equivalently, we avoid the
need for libc to provide its own definition of sigcontext).

While we're at it, move PT_FLAGS_xxx to where they are not visible
from userspace.  And always pass siginfo and mcontext to signal
handlers, even if they claim they don't need it, since sometimes
they actually try to use it anyway in practice.

Signed-off-by: Chris Metcalf <cmetcalf@tilera.com>