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* Wrap LIBCXXABI_USE_LLVM_UNWINDER with defined().Logan Chien2016-08-311-2/+2
| | | | | | | | | | | | This commit fixes -Wundef by replacing: #if !LIBCXXABI_USE_LLVM_UNWINDER with: #if !defined(LIBCXXABI_USE_LLVM_UNWINDER) llvm-svn: 280251
* [CMake] Be more consistent about naming targets and components in libc++abiEric Fiselier2016-08-281-4/+7
| | | | | | | | | | | | | | | | | | This patch (and commit summary) mirror r279675 by Chris B which was applied to libc++ but not libc++abi. Summary: The point of this patch is to have a consistent convention for naming build, check and install targets so that the targets can be constructed from the project name. This change renames a bunch of CMake components and targets from libcxxabi to cxxabi. For each renamed target I've added a convenience target that matches the old target name and depends on the new target. This will preserve function of the old targets so that the change doesn't break the world. We can evaluate if it is worth removing the extra targets later. llvm-svn: 279938
* [CMake] Apply r279151 cleanup to libc++abi.Eric Fiselier2016-08-281-1/+1
| | | | | | | | | | | | This patch applies changes similar to those in r279515 to libc++abi. Summary of changes in this patch: * Renamed variable LLVM_CONFIG -> LLVM_CONFIG_PATH * Renamed variable LIBCXXABI_BUILT_STANDALONE -> LIBCXXABI_STANDALONE_BUILD * Add an include of AddLLVM in the tests subdirectory for add_lit_testsuite. llvm-svn: 279936
* Fix ASAN failures in the demanglerMehdi Amini2016-08-131-11/+56
| | | | | | These were found fuzzing with ASAN. llvm-svn: 278579
* Depend directly on unwind when not building standalonePetr Hosek2016-08-091-2/+7
| | | | | | | | | When using libunwind and not building as standalone project, we can directly depend on the unwind library target. Differential Revision: https://reviews.llvm.org/D23289 llvm-svn: 278169
* Add lib directory to linker paths when using libunwindPetr Hosek2016-08-091-0/+3
| | | | | | | | | | When using libunwind and not building as standalone project, we need to add LLVM library directory to the list of linker directories to ensure it can find libunwind dependency. Differential Revision: https://reviews.llvm.org/D23287 llvm-svn: 278076
* [libcxxabi] When catching an exception of type nullptr_t with a handler ofRichard Smith2016-07-191-5/+29
| | | | | | | | | | | | | pointer-to-member type, produce a null value of the right type. This fixes a bug where throwing an exception of type nullptr_t and catching it as a pointer-to-member would not guarantee to produce a null value in the catch handler. The fix is pretty simple: we statically allocate a constant null pointer-to-data-member representation and a constant null pointer-to-member-function representation, and produce the address of the relevant value as the adjusted pointer for the exception. llvm-svn: 276016
* [libcxxabi] Introduce a -fno-exceptions libc++abi libary variantAsiri Rathnayake2016-05-315-6/+95
| | | | | | | | | | | | | | | | | Currently there is only support for a -fno-exceptions libc++ build. This is problematic for functions such as std::terminate() which are defined in libc++abi and using any of those functions throws away most of the benefits of using -fno-exceptions (code-size). This patch introduces a -fno-exceptions libc++abi build to address this issue. This new variant of libc++abi cannot be linked against any with-exceptions code as some symbols necessary for handling exceptions are missing in this library. Differential revision: http://reviews.llvm.org/D20677 Reviewers: EricWF, mclow.lists, bcraig llvm-svn: 271267
* libc++abi: build with -fvisibility=hiddenSaleem Abdulrasool2016-05-262-3/+6
| | | | | | | | Enable building libc++abi with hidden visibility by default. The ABI mandated interfaces (and a few extra) are already set up to be externally visible. This allows us to ensure that any implementation details are not leaked. llvm-svn: 270816
* libc++abi: make __cxa_call_unexpected visibleSaleem Abdulrasool2016-05-111-1/+1
| | | | | | | This may be invoked by the compiler, and needs to be made available so that the users can reference it. llvm-svn: 269255
* libc++abi: fix visibility of personalitiesSaleem Abdulrasool2016-05-041-2/+3
| | | | | | | The personality routines need to be exposed to the users as the functions reference the personality routine to handle exceptions. llvm-svn: 268477
* [libcxxabi] Teach cxa_demangle about Hexagon's long double sizeBen Craig2016-01-201-1/+1
| | | | | | | cxa_demangle's default size for a long double is 10 bytes. Hexagon only has an 8 byte long double though. llvm-svn: 258313
* Recommit r256322: Fix PR25898 - Check for incomplete pointers types in ↵Eric Fiselier2016-01-191-17/+17
| | | | | | | | | | | can_catch(...) This patch re-commits r256322 and r256323. They were reverted due to a OS X test failure. The test failure has been fixed by libc++ commit r258217. This patch also adds some additional tests. llvm-svn: 258249
* Revert r258222 because it's missing files. Will re-commit complete patchEric Fiselier2016-01-191-17/+17
| | | | llvm-svn: 258228
* Recommit r256322: Fix PR25898 - Check for incomplete pointers types in ↵Eric Fiselier2016-01-191-17/+17
| | | | | | | | | | | can_catch(...) This patch re-commits r256322 and r256323. They were reverted due to a OS X test failure. The test failure has been fixed by libc++ commit r258217. This patch also adds some additional tests. llvm-svn: 258222
* Revert r256322 (and follow-up 256323), the test it added does not pass on OS X.Nico Weber2016-01-151-17/+17
| | | | llvm-svn: 257896
* [WebAssembly] Accomodate wasm's 128-bit long double.Dan Gohman2016-01-131-1/+2
| | | | llvm-svn: 257614
* Fix PR25898 - Check for incomplete pointers types in can_catch(...)Eric Fiselier2015-12-231-17/+17
| | | | llvm-svn: 256322
* Fix ARM __cxa_end_cleanup() and gc-sections.Logan Chien2015-12-221-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | 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
* [libc++abi] Use libgcc and libgcc_s to provide _Unwind symbols instead of ↵Eric Fiselier2015-12-141-3/+5
| | | | | | | | | | | | | | | | | | libgcc_eh.a Summary: libgcc_eh.a cannot be used when building libc++abi as a shared library (the default configuration). See this post for some more discussion: https://gcc.gnu.org/ml/gcc/2012-03/msg00104.html This patch reverts back to using libgcc_s when linking libc++abi.so. Reviewers: danalbert, chandlerc, mclow.lists, ismail, compnerd Subscribers: vkalintiris, cfe-commits Differential Revision: http://reviews.llvm.org/D15440 llvm-svn: 255559
* ibc++abi: mark visibilitySaleem Abdulrasool2015-12-048-139/+144
| | | | | | | | | 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
* c++abi: whitespace adjustmentSaleem Abdulrasool2015-12-048-229/+177
| | | | | | | Cleanup some code with clang-format to make the following change easier to identify material difference. NFC. llvm-svn: 254690
* c++abi: use __builtin_offsetof instead of offsetofSaleem Abdulrasool2015-11-181-8/+9
| | | | | | | | | 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
* Fix Bug 25103 - _cxa_demangle improperly demangles virtual thunks. Thanks to ↵Marshall Clow2015-10-121-1/+1
| | | | | | Jason King for the report and suggested fix llvm-svn: 250097
* Fix incorrect parsing of arguments for nested functions. Reviewed as ↵Marshall Clow2015-10-081-2/+3
| | | | | | http://reviews.llvm.org/D13192. Thanks to Anseny Kapoulkine for the patch. llvm-svn: 249649
* Let cxa_demangle.cpp compile with gcc/libstdc++ 4.8 and clang-cl/MSVC2013's STL.Nico Weber2015-09-201-0/+24
| | | | | | | libstdc++ needs a few typedefs in malloc_alloc. MSVC's STL needs rebind(), construct(), destroy(). MSVC2013 also has no snprintf, but it exists in 2015. llvm-svn: 248129
* EH: fix register usage for SjLjSaleem Abdulrasool2015-09-201-5/+8
| | | | | | | | | | When using SjLj EH, do not use __builtin_eh_return_regno, map directly to the ID. This would work on some targets, particularly those where the non-SjLj EH personality used the same register mapping (0 -> 0, 1 -> 1). However, this is not guaranteed. Avoiding the use of the builtin enables the use of libc++ with SjLj EH on all targets. llvm-svn: 248108
* [libcxxabi] Add "install-libcxxabi" target.Eric Fiselier2015-08-191-2/+10
| | | | | | | | | | | | | | Summary: Currently you can't install libc++abi from within the LLVM tree without installing all of LLVM. This patch adds an install rule for libc++abi. Reviewers: danalbert, compnerd, rengolin, beanz Subscribers: martell, beanz, jroelofs, cfe-commits Differential Revision: http://reviews.llvm.org/D11682 llvm-svn: 245461
* [AArch64] Quick fix for cxa demanglerRenato Golin2015-08-191-1/+1
| | | | | | | | | This makes all libcxxabi tests pass on AArch64. Further changes and new tests to come. Patch by Keith Walker. llvm-svn: 245449
* [libcxxabi][mips] Correct float_data::mangled_size for all ABI's.Daniel Sanders2015-07-301-1/+3
| | | | | | | | | | | | | | Summary: Patch by Nitesh Jain and Jaydeep Patil with a small revision to use ABIs rather than Architecture Revisions (which currently imply particular ABIs). Fixes test_demangle.pass.cpp (PR24149). Subscribers: mclow.lists, jaydeep, nitesh.jain, hans, cfe-commits Differential Revision: http://reviews.llvm.org/D11483 llvm-svn: 243645
* Remove include directive for the unused libunwind_ext.h.Logan Chien2015-07-121-4/+0
| | | | llvm-svn: 241993
* fallback_malloc: silence conversion warning (NFC)Saleem Abdulrasool2015-06-031-4/+4
| | | | | | | | This silences some conversion warnings from GCC 4.9.2. Simply casting the RHS doesn't seem to be sufficient to silence the warning. Convert the operation equal operator usage to calculation and assignment. llvm-svn: 238945
* fallback_malloc: silence qual-cast warning (NFC)Saleem Abdulrasool2015-06-031-1/+1
| | | | | | | This silences a GCC 4.9.2 qual-cast warning in the fallback_malloc codepath. NFC. llvm-svn: 238944
* Implement uncaught_exceptions() to get a count, rather than a bool. Update ↵Marshall Clow2015-06-021-3/+6
| | | | | | the libc++abi version. Reviewed as http://reviews.llvm.org/D10067 llvm-svn: 238827
* libcxx: Switch to use __gnu_unwind_frame() for libunwind.Logan Chien2015-05-291-32/+2
| | | | | | | | | As a step to fix libunwind unw_step(), a new function __gnu_unwind_frame() has been introduced to libunwind, and it is required to use this function so that some libunwind internal data structure can be updated properly. llvm-svn: 238561
* Make sure !empty() before calling String::front().Chaoren Lin2015-05-261-4/+7
| | | | | | | | | | Reviewers: howard.hinnant Subscribers: cfe-commits Differential Revision: http://reviews.llvm.org/D9954 llvm-svn: 238263
* Disallow conversions from function pointers to void*.Eric Fiselier2015-05-011-3/+7
| | | | | | | | | Function pointers and member function pointers cannot be converted to void*. libc++abi incorrectly allows this conversion for function pointers. Review URL: http://reviews.llvm.org/D8811 llvm-svn: 236299
* libc++abi: work around layering violationSaleem Abdulrasool2015-04-281-1/+1
| | | | | | | | This papers over a layering violation currently between libc++abi and libunwind. It reaches into the sources to get the declaration of an ABI defined function. This should allow the ARM buildbot to continue building libc++abi again. llvm-svn: 235965
* libc++abi: remove unused variableSaleem Abdulrasool2015-04-271-2/+1
| | | | | | | The externC variable was set but unused. This constantly flagged a warning from gcc. Replace it with a comment until such a time that we need it. llvm-svn: 235830
* libc++abi: clear up some -Wqual-cast warningsSaleem Abdulrasool2015-04-272-3/+2
| | | | | | Cleans up cast qualifier warnings identified by GCC 4.9.2. llvm-svn: 235829
* libc++abi: silence some warningsSaleem Abdulrasool2015-04-271-1/+1
| | | | | | | | | Cleans up the -Wundef warning caused by the use of the __LITTLE_ENDIAN__ macro. Instead use `__BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__`. `__BYTE_ORDER__` is defined by GCC since 4.2 and by clang. This avoids the undef case where a macro may be undefined. This has previously caught real errors in libunwind. llvm-svn: 235828
* libc++abi: remove the duplicated unwind contentSaleem Abdulrasool2015-04-2422-10394/+0
| | | | | | | | | | The unwinder has been moved into its own project setup at http://svn.llvm.org/projects/libunwind/trunk. This simply removes the now duplicated content. This move was previously discussed on llvmdev at [1]. [1] http://lists.cs.uiuc.edu/pipermail/llvmdev/2015-January/081507.html llvm-svn: 235759
* Declare __cxa_new_handler as extern "C", or it declares a new variableReid Kleckner2015-04-151-1/+1
| | | | | | | Reverts change from r219012 to fix ABI incompatibility. Let's not worry about the GCC warning here. llvm-svn: 235013
* [libcxxabi] Disallow Base to Derived conversions for catching pointers to ↵Eric Fiselier2015-04-061-5/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | members. Summary: I accidentally implemented the 4.11 [conv.mem] conversions for libc++abi in a recent patch. @majnemer pointed out that 5.13 [except.handle] only allows the pointer conversions in 4.10 and not those is 4.11. This patch no longer allows the following example code: ```c++ struct A {}; struct B : public A {}; int main() { try { throw (int A::*)0; } catch (int B::*) { // exception caught here. } } ``` Reviewers: mclow.lists, jroelofs, majnemer Reviewed By: majnemer Subscribers: majnemer, cfe-commits Differential Revision: http://reviews.llvm.org/D8845 llvm-svn: 234254
* [libcxxabi] Fix multi-level pointer conversions and pointer to member ↵Eric Fiselier2015-04-022-0/+98
| | | | | | | | | | | | | | | | | | | | | | | | | | | conversion detection. Summary: Currently there are bugs in out detection of multi-level pointer conversions and pointer to member conversions. This patch fixes the following issues. * Allow multi-level pointers with different nested qualifiers. * Allow multi-level mixed pointers to objects and pointers to members with different nested qualifiers. * Allow conversions from `int Base::*` to `int Derived::*` but only for non-nested pointers. There is still some work that needs to be done to clean this patch up but I want to get some input on it. Open questions: * Does `__pointer_to_member_type_info::can_catch(...)` need to adjust the pointer if a base to derived conversion is performed? Reviewers: danalbert, compnerd, mclow.lists Reviewed By: mclow.lists Subscribers: cfe-commits Differential Revision: http://reviews.llvm.org/D8758 llvm-svn: 233984
* Also use dl_iterate_phdr() on CloudABI.Ed Schouten2015-03-311-1/+1
| | | | | | | | | | The unwinder now works on CloudABI. All exception-related libc++ tests now pass. This change was actually part of D8169, which also adds support for FreeBSD. That, however, still requires some more polishing. llvm-svn: 233676
* Don't print debugging messages to stdout.Ed Schouten2015-03-191-18/+18
| | | | | | | | | | There is some debugging code in cxa_demangle.cpp that prints messages on stdout. In general this is not safe, as the program itself may use stdout to write its output. Change this code to write to stderr. Differential Revision: http://reviews.llvm.org/D8167 llvm-svn: 232716
* Remove unneeded const_cast in readPointerHelper. Pointed out by jroelofsEric Fiselier2015-03-101-1/+1
| | | | llvm-svn: 231852
* [libcxx] Fix PR21580 - Undefined behavior in readEncodedPointer()Eric Fiselier2015-03-101-12/+20
| | | | | | | | | | | | | | Summary: This patch fixes a bug in `readEncodedPointer()` where it would read from memory that was not suitably aligned. This patch fixes it by using memcpy. Reviewers: danalbert, echristo, compnerd, mclow.lists Reviewed By: compnerd, mclow.lists Subscribers: cfe-commits Differential Revision: http://reviews.llvm.org/D8179 llvm-svn: 231839
* Unwind: define more interfaces more oftenSaleem Abdulrasool2015-03-091-40/+36
| | | | | | | | | These are also part of the Unwind interfaces. However, their implementation is different in EHABI vs frame tables based exception handling. Always provide a definition. This partially undoes a movement change from earlier to make the handling a bit simpler rather than grouping the two implementations together. llvm-svn: 231690
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