platform_external_libunwind_llvm/src/libunwind.cpp, branch master

[libunwind] Provide placement new definition

2019-02-02T21:15:49+00:00

While Clang automatically generates the code for placement new,
g++ doesn't do that so we need to provide our own definition.

Differential Revision: https://reviews.llvm.org/D57455

git-svn-id: https://llvm.org/svn/llvm-project/libunwind/trunk@352966 91177308-0d34-0410-b5e6-96231b3b80d8

[libunwind] Remove the remote unwinding support

2019-02-02T20:54:03+00:00

This is unfinished, unused and incomplete. This could be brought back in
the future if there's a desire to build a more complete implementation,
but at the moment it's just bitrotting.

Differential Revision: https://reviews.llvm.org/D57252

git-svn-id: https://llvm.org/svn/llvm-project/libunwind/trunk@352965 91177308-0d34-0410-b5e6-96231b3b80d8

Drop the dependency on , add placement new inline

2019-01-29T22:26:18+00:00

We haven't eliminated C++ library dependency altogether in D57251,
UnwindCursor.hpp had an unused dependency on  which was
pulling in other C++ headers. Removing that dependency also revealed
(correctly) that we need our own global placement new declaration. Now
libunwind should be independent of the C++ library.

Differential Revision: https://reviews.llvm.org/D57262

git-svn-id: https://llvm.org/svn/llvm-project/libunwind/trunk@352553 91177308-0d34-0410-b5e6-96231b3b80d8

Revert "[libunwind] Drop the dependency on , add placement new inline"

2019-01-28T20:55:12+00:00

This reverts commit r352384: this broke on ARM as UnwindCursor.hpp
still has some C++ library dependencies.

git-svn-id: https://llvm.org/svn/llvm-project/libunwind/trunk@352427 91177308-0d34-0410-b5e6-96231b3b80d8

[libunwind] Drop the dependency on , add placement new inline

2019-01-28T16:44:56+00:00

We haven't eliminated C++ library dependency altogether in D57251,
UnwindCursor.hpp had an unused dependency on  which was
pulling in other C++ headers. Removing that dependency also revealed
(correctly) that we need our own global placement new declaration. Now
libunwind should be independent of the C++ library.

Differential Revision: https://reviews.llvm.org/D57262

git-svn-id: https://llvm.org/svn/llvm-project/libunwind/trunk@352384 91177308-0d34-0410-b5e6-96231b3b80d8

[libunwind] Use placement new to avoid dependency C++ library

2019-01-25T21:39:46+00:00

The rest of libunwind already uses placement new, these are the only
places where non-placement new is being used introducing undesirable
C++ library dependency.

Differential Revision: https://reviews.llvm.org/D57251

git-svn-id: https://llvm.org/svn/llvm-project/libunwind/trunk@352245 91177308-0d34-0410-b5e6-96231b3b80d8

Update more file headers across all of the LLVM projects in the monorepo

2019-01-19T10:56:40+00:00

to reflect the new license. These used slightly different spellings that
defeated my regular expressions.

We understand that people may be surprised that we're moving the header
entirely to discuss the new license. We checked this carefully with the
Foundation's lawyer and we believe this is the correct approach.

Essentially, all code in the project is now made available by the LLVM
project under our new license, so you will see that the license headers
include that license only. Some of our contributors have contributed
code under our old license, and accordingly, we have retained a copy of
our old license notice in the top-level files in each project and
repository.

git-svn-id: https://llvm.org/svn/llvm-project/libunwind/trunk@351648 91177308-0d34-0410-b5e6-96231b3b80d8

[Sparc] Add Sparc V8 support

2019-01-14T10:15:20+00:00

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

Adds getArch() function to each Registers_ class to be able to separate
between DW_CFA_AARCH64_negate_ra_state and DW_CFA_GNU_window_save which
are both represented by the same constant.

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 on Sparc V8.

Reviewers: jyknight, mclow.lists, mstorsjo, compnerd

Reviewed By: jyknight, compnerd

Subscribers: jgorbe, mgorny, christof, llvm-commits, fedor.sergeev, JDevlieghere, ldionne, libcxx-commits

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

git-svn-id: https://llvm.org/svn/llvm-project/libunwind/trunk@351044 91177308-0d34-0410-b5e6-96231b3b80d8

Revert "[Sparc] Add Sparc V8 support"

2019-01-10T01:08:31+00:00

This reverts commit r350705.

git-svn-id: https://llvm.org/svn/llvm-project/libunwind/trunk@350787 91177308-0d34-0410-b5e6-96231b3b80d8

[Sparc] Add Sparc V8 support

2019-01-09T12:06:05+00:00

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