tree edda7c125799d809315fbf49e5c0b34d6cc899cc
parent 9defb52f575beff21b646e60e63f72ad1ac7cf54
author Daniel Cederman <cederman@gaisler.com> 1547035565 +0000
committer Daniel Cederman <cederman@gaisler.com> 1547035565 +0000

[Sparc] Add Sparc V8 support

Summary:
Adds the register class implementation for Sparc.
Adds support for DW_CFA_GNU_window_save.
Adds save and restore context functionality.

On Sparc the return address is the address of the call instruction,
so an offset needs to be added when returning to skip the call instruction
and its delay slot. If the function returns a struct it is also necessary
to skip one extra instruction.

Reviewers: jyknight, mclow.lists, mstorsjo, compnerd

Reviewed By: compnerd

Subscribers: fedor.sergeev, JDevlieghere, ldionne, libcxx-commits

Differential Revision: https://reviews.llvm.org/D55763

git-svn-id: https://llvm.org/svn/llvm-project/libunwind/trunk@350705 91177308-0d34-0410-b5e6-96231b3b80d8