9fc137bd1d
Replace bzero with memset
...
... so that we can use newlib as the c library.
llvm-svn: 206427
2014-04-16 23:26:55 +00:00
0f64d66304
Properly sign extend sdata2/4 in unwinder. Patch by Patrick Wildt
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llvm-svn: 206122
2014-04-12 23:22:52 +00:00
74ebf58742
Properly conditionalize DwarfFDECache<A>::dyldUnloadHook. Patch by Patrick Wildt
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llvm-svn: 206121
2014-04-12 22:11:11 +00:00
aacc1c76f9
Code cleanup and re-indent cxa_exception.hpp
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llvm-svn: 206108
2014-04-12 11:56:41 +00:00
7955feb82f
The content of .eh_frame may be misaligned, so use memcpy. This is seen
...
in the wild on SH3.
llvm-svn: 205756
2014-04-08 11:43:49 +00:00
fd0d20fae7
Include stdlib.h for getenv when !NDEBUG.
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llvm-svn: 205573
2014-04-03 22:00:08 +00:00
dfd7c9f324
Simplify.
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llvm-svn: 204292
2014-03-20 01:28:28 +00:00
1ed1a3d994
Fix DW_CFA_GNU_args_size handling. The primary architecture using this
...
opcode is VAX. A function call pushes the number of arguments given onto
the stack and "ret" will pop it automatically. The FDE of the caller
contains the amount of stack space used for arguments (and possibly
extra padding), so unwinding has to compensate for this when "returning"
from a function. This is exactly the case when step() is done. The
existing handling in unw_set_reg no longer makes sense.
llvm-svn: 204290
2014-03-20 01:23:55 +00:00
59155e79cc
0 is a valid LSDA encoding and can be seen in statically linked
...
programs. Initialize lsdaEncoding to DW_EH_PE_omit and check for that
value to decide whether a value should be decoded.
llvm-svn: 203626
2014-03-11 23:43:43 +00:00
3e107b3bd8
Demangle Dc to decltype(auto) as per the Itanium C++ ABI spec.
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llvm-svn: 201533
2014-02-17 21:56:01 +00:00
c5f7e6fe67
[libcxxabi] Fix broken codesourcery.com links in comments
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review: http://llvm-reviews.chandlerc.com/D2718
llvm-svn: 201208
2014-02-12 04:49:09 +00:00
d230a3d1f6
Fix PR17221 - can't catch virtual base classes when throwing derived NULL pointers. Specifically, libc++abi would crash when you tried it.
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llvm-svn: 200904
2014-02-06 04:47:02 +00:00
176be6fed5
Fix PR17222 - catching derived classes from thrown null pointer. Adds tests, too
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llvm-svn: 200864
2014-02-05 18:19:57 +00:00
1ffee2af6e
[libunwind] remove stray conditional
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llvm-svn: 200432
2014-01-30 00:27:16 +00:00
53c98b071e
Use .p2align instead of .align
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llvm-svn: 199941
2014-01-23 21:46:35 +00:00
b3500e6061
Add missing alignment directives in assembly
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llvm-svn: 199915
2014-01-23 18:42:10 +00:00
a625495cb8
Don't redefine static_assert()
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llvm-svn: 199860
2014-01-23 02:08:14 +00:00
fd0a6cf17a
Fix unwinder to build for iOS
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llvm-svn: 199859
2014-01-23 02:06:19 +00:00
5a7b4ca21e
Implement demangling for user-defined operators.
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llvm-svn: 198643
2014-01-06 23:05:04 +00:00
d40d387fb1
Update the copyright credits -- Happy new year 2014!
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FIXME: Dragonegg may be updated at non-trivial changes.
llvm-svn: 198274
2014-01-01 08:27:31 +00:00
1c9ff122b6
Add a first cut at a Registers_arm class, to be used for 32bit arm EHABI unwinding.
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llvm-svn: 197591
2013-12-18 17:53:55 +00:00
5f513f9b4a
Add mangling macros for Unwind's inline assembly.
...
This is in preparation for landing an implementation of unw_getcontext
on a system where it's mangled 'unw_getcontext', not '_unw_getcontext'.
llvm-svn: 197523
2013-12-17 21:07:53 +00:00
14fe17f302
Fix demangling crasher. The crasher involved nested <encoding> involving parameter packs, which exposed a logic bug causing an empty vector<string> to be accessed with back(). In addition to fixing the bug, I've inserted numerous preemptive checks for similar bugs in the hopes that if another bug is uncovered, the bug results in an invalid mangled string instead of a demangler crash. Test suite updated with string that was causing the crash.
...
llvm-svn: 197063
2013-12-11 19:44:25 +00:00
6b04d06ed3
Rename UnwindRegisters*.s files to UnwindRegisters*.S, step 2 of 2
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These files require preprocessing, so their name should end with a capital S.
llvm-svn: 196555
2013-12-06 00:37:21 +00:00
c6a7b1bc92
Rename UnwindRegisters*.s files to UnwindRegisters*.S, step 1 of 2
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These files require preprocessing, so their name should end with a capital S.
llvm-svn: 196554
2013-12-06 00:35:35 +00:00
c833ec0fca
Fix minor initialization bug in Registers_x86_64.
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According to kledzik, this constructor isn't live code, so no functionality
change.
llvm-svn: 196550
2013-12-06 00:11:01 +00:00
6ceed44db4
80-column wrap a comment in a test
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llvm-svn: 196540
2013-12-05 21:54:49 +00:00
87d4a00e9e
[unwind] remove darwin build dependency on <mach-o/dyld_priv.h>
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llvm-svn: 196436
2013-12-05 00:12:03 +00:00
350bda6eb2
Fixed a couple of test errors; changed 'const A const *' to 'const A* const'. Thanks to Nico for the catch
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llvm-svn: 196355
2013-12-04 05:39:55 +00:00
664711188f
Fix indentation of fields in __cxa_exception to line up
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Align to 8 spaces instead of an inconsistent 9.
llvm-svn: 195974
2013-11-30 17:37:21 +00:00
7c6bb6500e
On Windows, typeids are different between DLLs and EXEs, so comparing
...
type_info* will work for typeids from the same compiled file but fail
for typeids from a DLL and an executable. Among other things, exceptions
are not caught by handlers since can_catch() returns false.
Defining _LIBCXX_DYNAMIC_FALLBACK does not help since can_catch() calls
is_equal() with use_strcmp=false so the string names are not compared.
This patch compares typeids first (cheap) and only they are different
calls strcmp.
llvm-svn: 195502
2013-11-22 21:43:23 +00:00
dde62a377c
Comment correction. syslog() syntax is:
...
void syslog(int facility_priority, const char* format, ...);
This is indeed how it is used in private_typeinfo.cpp.
llvm-svn: 195452
2013-11-22 12:11:40 +00:00
66da53e0da
If libc++ has not declared bad_array_length, then declare it here just so that it gets into the binary.
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llvm-svn: 194208
2013-11-07 17:16:37 +00:00
2c88a9bfb0
Swap contents of UnwindRegistersRestore.s and UnwindRegistersSave.s
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llvm-svn: 193840
2013-11-01 00:37:20 +00:00
fbea189748
Rename LIBUNWIND_AVAIL to LIBUNWIND_UNAVAIL so as to not conflict with other (different) LIBUNWIND_AVAIL define
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llvm-svn: 193839
2013-11-01 00:32:26 +00:00
517cb27c43
Move local Db type out to namespace scope.
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llvm-svn: 193169
2013-10-22 16:45:48 +00:00
55410fff8e
unwinder: conditionalise availability
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__attribute__ (( unavailable )) is for Apple specific builds. Create a macro
to conditionalise the usage of the macro. This is to aid in porting the
unwinder to other platforms.
llvm-svn: 192868
2013-10-17 03:57:41 +00:00
95a975bc60
[unwind] Fix unw_init_remote_thread() use to void* instead of thread_t for parameter to match other implementations
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llvm-svn: 192248
2013-10-08 22:59:34 +00:00
4d95aae2f7
[unwind] add required #include
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llvm-svn: 192245
2013-10-08 22:51:34 +00:00
f6330ddc0d
Fix conditionals on __Unwind_SjLj_* functions to only build for SJLJ based architectures
...
llvm-svn: 192241
2013-10-08 21:57:22 +00:00
31057d618e
Consistent spelling of names.
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llvm-svn: 192180
2013-10-08 12:35:07 +00:00
312fcd0e1c
libcxxabi contains the runtime support for C++. But, as some folks have
...
realized, it is not complete. It relies on some _Unwind_* functions to be
supplied by the OS. That means it cannot be ported to platforms that don’t
already have an unwinder.
Years ago Apple wrote its own unwinder for MacOSX and iOS. To make libcxxabi
complete, Apple has decided the source code for its unwinder can be contributed
to the open source LLVM libcxxabi project, with a dual licensed under LLVM
and MIT license.
So, I’ve spent some time cleaning up the sources to make them conform with
LLVM style and to conditionalize the sources in a way that should make it
easier to port to other platforms. The sources are in a separate "Unwind"
directory under "src" in libcxxabi.
Background:
Most architectures now use "zero cost" exceptions for C++. The zero cost means
there are no extra instructions executed if no exceptions are thrown. But if
an exception is thrown, the runtime must consult side tables and figure out how
to restore registers and "unwind" from the current stack frame to the catch
clause. That ability to modify the stack frames and cause the thread to resume
in a catch clause with all registers restored properly is the main purpose
of the unwinder.
This unwinder has two levels of API. The high level APIs are the _Unwind_*
functions which the cxa_* exception functions in libcxxabi require. The low
level APIs are the unw_* functions which are an interface defined by the the
old HP libunwind project (which shares no code with this unwinder).
llvm-svn: 192136
2013-10-07 21:39:41 +00:00
46c9950f48
Adding bad_array_length to libc++abi
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llvm-svn: 190479
2013-09-11 01:42:02 +00:00
9735f1a06b
Add ability to set OPTIONS for compile
...
llvm-svn: 190371
2013-09-09 23:53:08 +00:00
8d362a999e
Change the two last remaining _LIBCPP_CANTTHROW to _NOEXCEPT
...
llvm-svn: 189603
2013-08-29 19:19:27 +00:00
59a5a956f5
Propagate the removal of _LIBCPP_CANTTHROW (r189046) to libcxxabi. This fixes http://llvm.org/bugs/show_bug.cgi?id=16996 .
...
llvm-svn: 189194
2013-08-25 17:00:57 +00:00
b162939c1a
tip-of-trunk clang has corrected some access checks for special members in a virtual inheritance hierarchy. Change a few private inheritances to protected. This change will not impact what the test was testing. This fixes http://llvm.org/bugs/show_bug.cgi?id=16753 .
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llvm-svn: 187429
2013-07-30 19:00:45 +00:00
04c4cffbe1
I had a buffer mismanagement bug in the demangler.
...
llvm-svn: 187255
2013-07-26 22:14:53 +00:00
ef93bc1c8a
Updated CREDITS.TXT
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llvm-svn: 185464
2013-07-02 19:01:59 +00:00
60c16eb7f5
I'd no sooner made the last commit when Matthew Dempsky sent me another test case that led me to yet another closely related test case that the current design could not handle. I've now changed the way forward references are handled completely. It wasn't that much code to change. The demangler, when confronted with a forward reference to a template parameter, now parses things twice. During the second parse, all forward references are remembered from the first parse. Test suite updated with new case.
...
llvm-svn: 184672
2013-06-23 19:52:45 +00:00
cde9e006d8
After a private conversation with Arthur O'Dwyer, and a good night's sleep, I believe this fix is a better fix than what I committed in r184656 yesterday. I've basically moved the checking for '`' from the start of the demangling process to the end of it. In the process I discovered that one of the test cases no longer demangled to the expected string. After further investigation I believe this case to not be a valid mangled string, and so I moved the test case to the 'invalid cases'. The reason I believe it is invalid is that it should use T_ instead of T0_ to index the template parameter.
...
llvm-svn: 184668
2013-06-23 17:14:35 +00:00
ae10f9d45e
Filter out '`' in mangled strings and reject them as invalid if found.
...
llvm-svn: 184656
2013-06-23 03:36:38 +00:00
72a54eab35
I created a random mangled name generator and have thrown about 200 million random strings at the demangler. I succeeded in crashing it twice more and those crashers have been fixed and the test suite updated with the crash cases.
...
llvm-svn: 184562
2013-06-21 17:04:24 +00:00
8935442538
Another demangler crasher. Updated test suite to prevent regression.
...
llvm-svn: 184477
2013-06-20 21:49:34 +00:00
763e591461
Protect against invalid mangled names. Add test suite for invalid mangled names.
...
llvm-svn: 184394
2013-06-20 01:55:07 +00:00
b076753454
Demangle objc mangling implemented in r184250
...
llvm-svn: 184301
2013-06-19 13:43:18 +00:00
80fe668394
Tweaks/cleanups provided by Matthew Dempsky
...
llvm-svn: 184118
2013-06-17 20:25:21 +00:00
862c4a06ee
Demangler update: This now demangles many more (all?) C++11 symbols. Demangler tests updated.
...
llvm-svn: 184097
2013-06-17 18:10:34 +00:00
f2ca35cd79
Add capability to demangle invocation functions for ObjC blocks.
...
llvm-svn: 179208
2013-04-10 19:44:03 +00:00
be2eced483
Bruce Mitchener: Typo fixes.
...
llvm-svn: 175275
2013-02-15 15:48:49 +00:00
2b853bf65f
Partially revert r152770. That commit moved the default handlers to their own file. But it also did some refactoring. It is the latter that is being reverted. The refactoring had accidentally removed the required effect that the default unexpected_handler calls std::terminate(), which is a visible effect.
...
llvm-svn: 174532
2013-02-06 19:29:55 +00:00
43632a26a5
Update the copyright coredits -- Happy new year 2013!
...
llvm-svn: 171342
2013-01-01 10:00:19 +00:00
f32048d26b
Rename class __lambda_node to ___lambda_node to fix compile failure with gcc 4.6 and 4.7
...
- using "__lambda_node" causes internal compiler error in newer GCC versions
llvm-svn: 169402
2012-12-05 18:55:49 +00:00
c1c87c15f2
__list::ends_with_template was giving the wrong answer for empty lists. And __parse_unnamed_type_name wasn't properly handling the list of paramters and was not safe against incorrectly mangled lambdas (running past last).
...
llvm-svn: 169022
2012-11-30 18:43:50 +00:00
7166bff4ff
Remove aborts under __dynamic_cast which were under _LIBCXX_DYNAMIC_FALLBACK. Change all type_info comparisons to use an inlined is_equal helper. However no change in functionality for this latter change at this time. This is just to encapsulate the comparison and make it a little easier to switch back and forth for testing/debugging.
...
llvm-svn: 168052
2012-11-15 18:00:42 +00:00
fe4d464f52
Update CREDIT.TXT
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llvm-svn: 167847
2012-11-13 15:57:18 +00:00
70abebed37
Wen-Han Gu: Fix for http://llvm.org/bugs/show_bug.cgi?id=14312 Exception Table out-of-range but still keep walking.
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llvm-svn: 167733
2012-11-12 18:19:15 +00:00
c33e98ca05
Make the type_info for __shim_type_info visible. This should address some failing dynamic_casts that a few applications are doing on the type_info hierarchy.
...
llvm-svn: 165883
2012-10-13 18:45:59 +00:00
fb89f27a8f
Move TargetData to DataLayout.
...
llvm-svn: 165397
2012-10-08 16:29:26 +00:00
538fe8f35b
Set up code under _LIBCXX_DYNAMIC_FALLBACK which is off by default. For a full description of _LIBCXX_DYNAMIC_FALLBACK, see src/private_typeinfo.cpp.
...
llvm-svn: 164863
2012-09-28 22:43:50 +00:00
785a8721d2
Improve the diagnostic messages on dynamic_cast.
...
llvm-svn: 164833
2012-09-28 17:58:48 +00:00
2d0352cbf8
Two changes: 1) I still didn't have the ABI correct to match the gcc-4.2 std::string under the exception classes. I think the changes to stdexcept.cpp have got that down now. 2) On Apple platforms I'm seeing visibility bugs in applications with respect to type_info's being hidden. This is causing dynamic_cast to malfunction because there are multiple type_info's running around for one type within an application, making dynamic_cast believe that one type is actually multiple types. As a stop gap measure I'm trying to detect this error, print out an error message, but continue with the most likely desired result. This is all under __APPLE__. This behavior can be expanded to other platforms if desired.
...
llvm-svn: 164809
2012-09-28 00:05:34 +00:00
8493cad160
Updating email address
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llvm-svn: 164490
2012-09-24 14:27:24 +00:00
128ec49e29
Rename class __lambda to __lambda_node to avoid clash with gcc. This fixes http://llvm.org/bugs/show_bug.cgi?id=13889
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llvm-svn: 164405
2012-09-21 19:21:37 +00:00
ed3d690f68
Tweak use of dlopen to be a little more correct and higher performing.
...
llvm-svn: 164404
2012-09-21 19:12:56 +00:00
e115af2777
I've added Apple-only behavior that looks for libstdc++ in the same process and if found, checks the string stored in <stdexcept> exception objects to see if it is the gcc empty string singleton before manipulating the reference count. This is done so that if such an exception is created with a zero-length string in libstdc++, libc++abi won't try to delete the memory. This is part of a ongoing process to make libc++ exceptions ABI-compatible with libstdc++-4.2 exceptions, to the point that each library can catch exceptions thrown by the other. If other parties would also like this behavior, the #if __APPLE__ can be broadened.
...
llvm-svn: 164170
2012-09-18 21:34:12 +00:00
6aa048efc9
Specifically disallow primary-expressions of the form LT_... on the basis of this decition: http://sourcerytools.com/pipermail/cxx-abi-dev/2011-August/002422.html . Failure to disallow this was causing infinite recursion in the demangler when these symbols show up due to mangling bugs. This patch causes the demangler to return an invalid mangled name result rather than crash in infinite recursion.
...
llvm-svn: 163859
2012-09-13 23:49:59 +00:00
2c2b55f27f
Change size of reference count field in __libcpp_nmstr from 32 bits to 64 bits for 64 bit targets. This is controls the data layout of all exceptions defined in <stdexcept>. This aligns the ABI with that of gcc-4.2.
...
llvm-svn: 161496
2012-08-08 16:15:16 +00:00
757640b156
Fixes apple: #12020687 . This was a problem in the demangler with template
...
substitution forward references. That is, sometimes a mangled name refers to
a substitution that hasn't yet been defined. The demangler was derferencing a
null pointer in this case because it wasn't properly guarded against a
forward reference. Test case added to catch this problem.
llvm-svn: 161267
2012-08-03 22:02:07 +00:00
3a86b142a1
Update status.
...
llvm-svn: 161221
2012-08-02 22:06:41 +00:00
fdfcfcf670
Update CREDITS.TXT
...
llvm-svn: 161129
2012-08-01 19:24:04 +00:00
b2a9cee678
Erik Olofsson: This patch adds support for lambda demangling. I fixed this because it crashed lldb when it tried to demangle the added test.
...
Not sure how it should identify the lambda so that might need changing from the current 'lambdax':: Howard: Please patch CREDITS.TXT.
llvm-svn: 161125
2012-08-01 18:56:46 +00:00
a8c5d770f9
Andrew Morrow: Mainline clang seems to have recently become more strict about the
...
consistent application of visibility attributes, which causes some new
breakage in libcxxabi:
In file included from src/libcxxabi/src/cxa_default_handlers.cpp:19:
src/libcxxabi/src/private_typeinfo.h:123:23: error: visibility does
not match previous declaration
class __attribute__ ((__visibility__(default))) __class_type_info
^
src/libcxxabi/src/private_typeinfo.h:19:13: note: previous attribute is here
#pragma GCC visibility push(hidden)
^
1 error generated.
The forward declaration of __class_type_info is picking up hidden
visibility from the #pragma, which conflicts with the default
visibility applied when the class is later fully declared. I'm
assuming that the full declaration has it right (and that the
diagnostic is correct), so the attached patch applies the default
visibility attribute to the forward declaration.
llvm-svn: 160933
2012-07-29 20:41:19 +00:00
95d917f8ee
Andrew Morrow: The variable 't1' on line 10188 of cxa_demangle.cpp is uninitialized
...
which generates -Wsometimes-uninitialized. Howard: The only thing this patch is missing is an update to CREDITS.TXT.
llvm-svn: 160932
2012-07-29 16:14:52 +00:00
0527b8f942
add a link to the libc++ website
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llvm-svn: 160553
2012-07-20 17:21:42 +00:00
4c50ea27bf
Add missing #include <stdlib.h> into test which uses ::exit.
...
llvm-svn: 160039
2012-07-11 09:37:56 +00:00
7f53a5da57
Don't dereference root in __parse_ctor_dtor_name unless it is known to not be null.
...
llvm-svn: 158556
2012-06-15 21:57:51 +00:00
ba2e8aeda5
Fix bug in cxa_demangle involving template substitution.
...
llvm-svn: 155994
2012-05-02 15:38:11 +00:00
9de0b35648
Make __cxa_new_handler un-mangled
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llvm-svn: 155763
2012-04-28 16:46:04 +00:00
2a9c509c7e
Changed 'cause' from 'terminate' to 'uncaught' in default_terminate_handler
...
llvm-svn: 155452
2012-04-24 17:41:51 +00:00
b54f86aa9d
Richard Smith: __int128 is a GNU keyword which clang 3.1 supports. This usage of it as an identifier will need to be renamed.
...
llvm-svn: 155044
2012-04-18 20:55:06 +00:00
e59dbd7b82
I would really like to write the handlers in terms of C++11 atomics. This would give us the best performance, portablity, and safety tradeoff. Unfortunately I can not yet do that. So I've put the desired code in comments, and reverted the handler getters to the slower but safer legacy atomic intrinsics.
...
llvm-svn: 153041
2012-03-19 16:56:51 +00:00
4ac72dd982
I've moved __cxa_terminate_handler, __cxa_unexpected_handler and __cxa_new_handler from the public header cxxabi.h into the private header cxa_handlers.hpp. During this move I've also moved them from namespace __cxxabiapple into the global namespace. They are, and have always been extern C and so the namespace (or lack of it) does not affect their ABI. In general external clients should not reference these symbols. They are atomic variables and will be changing into C++11 atomic variables in the future. However for those few clients who really need access to them, their name, mangling, size, alignment and layout will remain stable. You just may need your own declaration of them. Include guards have been added to the private header cxa_exception.hpp. The private header cxa_default_handlers.hpp has been removed and the default handlers are now file-static. Include guards have been added to the private header cxa_handlers.hpp.
...
llvm-svn: 153039
2012-03-19 16:20:34 +00:00
0f73197364
Arm fixes in cxa_personality.cpp and a little refactoring.
...
llvm-svn: 152966
2012-03-17 00:10:52 +00:00
d6533ccd48
Less lame "concurrency" support
...
These APIs aren't thread safe, but they're pretending to be. Let's at
least make the getter as fast as they can be. The setters are a lost
cause unless the API can be fixed.
llvm-svn: 152786
2012-03-15 08:58:08 +00:00
13e35c086c
Be friendly to when dead_strip doesn't work
...
Apple Radar: 11053417
llvm-svn: 152785
2012-03-15 08:58:06 +00:00
778324abe4
move default handlers to their own file so they can be overridden at build time (dyld)
...
llvm-svn: 152770
2012-03-15 01:52:12 +00:00
ffa26667d9
Missed an underscore on the last commit.
...
llvm-svn: 152736
2012-03-14 19:39:50 +00:00
baae2be624
Enable __arm__ on apple
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llvm-svn: 152735
2012-03-14 19:30:00 +00:00
37cb6555f0
fix crash log magic
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llvm-svn: 152693
2012-03-14 01:16:14 +00:00
Jonathan Roelofs