[libunwind] Add support for OpenRISC 1000.

This patch makes no assumptions on ABI past the ABI defined in
the OpenRISC 1000 spec except that the DWARF register numbers will
be 0-31 for registers r0-r31, which is true for both gcc and
clang at the moment.

git-svn-id: https://llvm.org/svn/llvm-project/libunwind/trunk@246413 91177308-0d34-0410-b5e6-96231b3b80d8
6 files changed
tree: e8168b832a482c6864a2a5138b73eee4a9974517
  1. cmake/
  2. include/
  3. src/
  4. test/
  5. .arcconfig
  6. .clang-format
  7. CMakeLists.txt