Summary: It's now completely empty, so we can remove it entirely.
Reviewers: mclow.lists, EricWF
Subscribers: cfe-commits
Differential Revision: https://reviews.llvm.org/D31502
llvm-svn: 299129
Summary:
In 32 bit builds on a 64 bit system `std::malloc` does not return correctly aligned memory. This leads to undefined behavior.
This patch switches to using `posix_memalign` to allocate correctly aligned memory instead.
Reviewers: mclow.lists, danalbert, jroelofs, compnerd
Reviewed By: compnerd
Subscribers: cfe-commits
Differential Revision: https://reviews.llvm.org/D25417
llvm-svn: 296952
Use the libc++abi visibility macros instead of pragmas or using
visibility attributes directly. Clean up redundant attributes on
definitions (where the declarations already have visibility attributes
applied, from either libc++ or libc++abi headers).
Introduce _LIBCXXABI_WEAK as a drive-by cleanup, which matches the
semantics of _LIBCPP_WEAK.
No functional change. Tested by building on Linux before and after this
change and verifying that the list of exported symbols is identical.
Differential Revision: https://reviews.llvm.org/D26949
llvm-svn: 296576
r281179 Introduced an externally threaded variant of the libc++ library. This
patch adds support for a similar library variant for libc++abi.
Differential revision: https://reviews.llvm.org/D27575
Reviewers: EricWF
llvm-svn: 290888
This patch refactors all pthread uses of libc++abi into a separate API. This
is the first step towards supporting an externlly-threaded libc++abi library.
I've followed the conventions already used in the libc++ library for the same
purpose.
Patch from: Saleem Abdulrasool and Asiri Rathnayake
Reviewed by: compnerd, EricWF
Differential revisions:
https://reviews.llvm.org/D18482 (original)
https://reviews.llvm.org/D24864 (final)
llvm-svn: 284128
Throwing an exception for the first time may lead to call calloc to
allocate memory for __cxa_eh_globals. If the memory pool is exhausted
at that moment, it results in abnormal termination of the program.
This patch addresses the issue by using fallback_malloc in that case.
In this revision, some restrictions were added into the test to not
run it in unsuitable environments.
Differential Revision: https://reviews.llvm.org/D17815
llvm-svn: 283531
Throwing an exception for the first time may lead to call calloc to
allocate memory for __cxa_eh_globals. If the memory pool is exhausted
at that moment, it results in abnormal termination of the program.
This patch addresses the issue by using fallback_malloc in that case.
Differential Revision: https://reviews.llvm.org/D17815
llvm-svn: 282692
This commit adds SHF_ALLOC and SHF_EXECINSTR section flags to
`.text.__cxa_end_cleanup` section. This fixes a link error when we are
using integrated-as and `ld.gold` (with `-Wl,--gc-sections` and
`-Wl,--fatal-warnings`.)
Detailed Explanation:
1. There might be some problem with LLVM integrated-as. It is not
emitting any section flags for text sections. (This will be fixed in
an independent commit.)
2. `ld.gold` will skip the external symbols in the section without
SHF_ALLOC. This is the reason why `.text.__cxa_end_cleanup_impl`
section is discarded even though it is referenced by
`__cxa_end_cleanup()`.
This commit workaround the problem by specifying the section flags
explicitly.
Fix http://llvm.org/PR21292
llvm-svn: 256241
Mark functions and types with the appropriate visibility. This is particularly
useful for environments which explicitly indicate origin of functions (Windows).
This aids in generating libc++abi as a DSO which exposes only the public
interfaces.
llvm-svn: 254691
Use `__builtin_offsetof` in place of `offsetof`. Certain environments provide a
macro definition of `offsetof` which may end up causing issues. This was
observed on Windows. Use `__builtin_offsetof` to ensure correct evaluation
everywhere. NFC.
llvm-svn: 253435
The problem that caused the need for http://reviews.llvm.org/D7419 was
caused by testing the value of something that was undefined. This
should prevent that in the future.
llvm-svn: 228257
Also remove the audotedection part so that if you're crazy enough to want a
single-threaded abi library, you'll say so explicitly in the build.
llvm-svn: 217262
The was working because, given __APPLE__, _LIBUNWIND_BUILD_SJLJ_APIS was set to
__arm__, but other ARM targets not using SJ/LJ will fail to compile.
llvm-svn: 206941
