Commit Graph

5 Commits

Author SHA1 Message Date
Eric Fiselier 19f802ff68 [libunwind] Properly align _Unwind_Exception.
Summary: _Unwind_Exception is required to be double word aligned. Currently the struct is under aligned.

Reviewers: mclow.lists, compnerd, kledzik, emaste

Subscribers: emaste, cfe-commits

Differential Revision: https://reviews.llvm.org/D22543

llvm-svn: 276215
2016-07-20 23:56:42 +00:00
Logan Chien 549d405877 Fix unw_getcontext() return value on AArch64.
unw_getcontext() should return UNW_ESUCCESS on success.  Therefore, the
assembly for AArch64 is incorrect because "ldr x0, #0" is a PC-relative
load instead of an immediate value load.

llvm-svn: 240648
2015-06-25 15:12:46 +00:00
Logan Chien 7fab97f364 libunwind: Fix unw_step() for ARM EHABI.
This commit fixes the unw_step() for ARM EHABI.  However, this commit
also changes the implementation details for ARM EHABI.

The first change is that the personality function should call
__gnu_unwind_frame() for default (or de facto) frame unwinding based on
the ARM-defined unwind opcode.  The function __gnu_unwind_frame() will
in turn calls unw_step() which actually unwinds the frame.

The second change is that the implementation _Unwind_Backtrace() should
no longer calls unw_step() to unwind the frame; since according to ARM
EHABI, the personality function should unwind the frame for us.

Special thanks to Anton for helpful suggestion on the initial version of
this patch.

llvm-svn: 238560
2015-05-29 15:33:38 +00:00
Saleem Abdulrasool a211afa448 unwind: remove libc++abi tests
These are related to libc++abi's personality routine and not core unwinding.
These have been restored in libc++abi, and are no longer needed here.

llvm-svn: 235766
2015-04-24 20:21:43 +00:00
Saleem Abdulrasool b1b1911777 unwind: move src/Unwind, include/, and test/ unwind content
This moves the majority of the unwind sources into the new project layout for
libunwind.  This was previously discussed on llvmdev at [1].  This is a
purely movement related change, with the build infrastructure currently still
residing in the libc++abi repository.

[1] http://lists.cs.uiuc.edu/pipermail/llvmdev/2015-January/081507.html

llvm-svn: 235758
2015-04-24 19:39:17 +00:00