This enables us to build the dwarf unwinder both with modules enabled and
disabled in addition to reducing code size in the latter case. The
helpers are also consolidated, and modified to resemble the BUG module
helpers.
Signed-off-by: NPaul Mundt <lethal@linux-sh.org>

Pass a module's .eh_frame section to the DWARF unwinder at module load
time so that the section's FDEs and CIEs can be registered with the
DWARF unwinder. This allows us to unwind the stack through module code
when generating backtraces.
Signed-off-by: NMatt Fleming <matt@console-pimps.org>

Everyone cut and paste this comment from my original one.  We now do
it generically, so cut the comments.
Signed-off-by: NRusty Russell <rusty@rustcorp.com.au>
Cc: Amerigo Wang <amwang@redhat.com>

This fixes up the LSB setting for SHmedia branching in updated symbols
when processing module relocations.
Signed-off-by: NPaul Mundt <lethal@linux-sh.org>

SH-X2 extended mode TLB allows for toggling of the exec bit, so make
sure we are using the right protection bits for module space there
also.
Signed-off-by: NPaul Mundt <lethal@linux-sh.org>

We should be calling in to the lib/bug.c module helpers, fix that up.
Signed-off-by: NPaul Mundt <lethal@linux-sh.org>

Replace the COPY_UNALIGNED_WORD helper.
Signed-off-by: NHarvey Harrison <harvey.harrison@gmail.com>
Signed-off-by: NPaul Mundt <lethal@linux-sh.org>

This is trivial, in that they're both effectively the same for the base
relocations anyways. SH-5 doesn't need the unaligned bits, and has a
few extra relocations, which are never hit on non-SH5 parts.
Signed-off-by: NPaul Mundt <lethal@linux-sh.org>

Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.

Let it rip!