9097e3cbca
(Note I am also applying this to main and stable/13, to restore the old libcxxrt ABI and to avoid having to maintain a compat library.) After the recent cherry-picking of libcxxrt commits0ee0dbfb0dandd2b3fadf2d, users reported that editors/libreoffice packages from the official package builders did not start anymore. It turns out that the combination of these commits subtly changes the ABI, requiring all applications that depend on internal details of struct _Unwind_Exception (available via unwind-arm.h and unwind-itanium.h) to be recompiled. However, the FreeBSD package builders always use -RELEASE jails, so these still use the old declaration of struct _Unwind_Exception, which is not entirely compatible. In particular, LibreOffice uses this struct in its internal "uno bridge" component, where it attempts to setup its own exception handling mechanism. To fix this incompatibility, go back to the old declarations of struct _Unwind_Exception, and restore the __LP64__ specific workaround we had in place before (which was to cope with yet another, older ABI bug). Effectively, this reverts upstream libcxxrt commits 88bdf6b290da ("Specify double-word alignment for ARM unwind") and b96169641f79 ("Updated Itanium unwind"), and reapplies our commit3c4fd2463b("libcxxrt: add padding in __cxa_allocate_* to fix alignment"). PR: 253840
172 lines
6.4 KiB
C
172 lines
6.4 KiB
C
/* libunwind - a platform-independent unwind library
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Copyright (C) 2003 Hewlett-Packard Co
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Contributed by David Mosberger-Tang <davidm@hpl.hp.com>
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This file is part of libunwind.
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Permission is hereby granted, free of charge, to any person obtaining
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a copy of this software and associated documentation files (the
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"Software"), to deal in the Software without restriction, including
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without limitation the rights to use, copy, modify, merge, publish,
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distribute, sublicense, and/or sell copies of the Software, and to
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permit persons to whom the Software is furnished to do so, subject to
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the following conditions:
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The above copyright notice and this permission notice shall be
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included in all copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
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LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
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OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
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WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
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#ifndef _UNWIND_H
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#define _UNWIND_H
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/* For uint64_t */
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#include <stdint.h>
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#ifdef __cplusplus
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extern "C" {
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#endif
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/* Minimal interface as per C++ ABI draft standard:
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http://www.codesourcery.com/cxx-abi/abi-eh.html */
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typedef enum
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{
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_URC_NO_REASON = 0,
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_URC_OK = 0,
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_URC_FOREIGN_EXCEPTION_CAUGHT = 1,
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_URC_FATAL_PHASE2_ERROR = 2,
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_URC_FATAL_PHASE1_ERROR = 3,
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_URC_NORMAL_STOP = 4,
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_URC_END_OF_STACK = 5,
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_URC_HANDLER_FOUND = 6,
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_URC_INSTALL_CONTEXT = 7,
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_URC_CONTINUE_UNWIND = 8
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}
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_Unwind_Reason_Code;
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typedef int _Unwind_Action;
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#define _UA_SEARCH_PHASE 1
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#define _UA_CLEANUP_PHASE 2
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#define _UA_HANDLER_FRAME 4
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#define _UA_FORCE_UNWIND 8
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struct _Unwind_Context; /* opaque data-structure */
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struct _Unwind_Exception; /* forward-declaration */
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typedef void (*_Unwind_Exception_Cleanup_Fn) (_Unwind_Reason_Code,
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struct _Unwind_Exception *);
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typedef _Unwind_Reason_Code (*_Unwind_Stop_Fn) (int, _Unwind_Action,
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uint64_t,
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struct _Unwind_Exception *,
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struct _Unwind_Context *,
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void *);
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/* The C++ ABI requires exception_class, private_1, and private_2 to
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be of type uint64 and the entire structure to be
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double-word-aligned. Please note that exception_class stays 64-bit
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even on 32-bit machines for gcc compatibility. */
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struct _Unwind_Exception
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{
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uint64_t exception_class;
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_Unwind_Exception_Cleanup_Fn exception_cleanup;
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unsigned long private_1;
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unsigned long private_2;
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} ;
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extern _Unwind_Reason_Code _Unwind_RaiseException (struct _Unwind_Exception *);
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extern _Unwind_Reason_Code _Unwind_ForcedUnwind (struct _Unwind_Exception *,
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_Unwind_Stop_Fn, void *);
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extern void _Unwind_Resume (struct _Unwind_Exception *);
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extern void _Unwind_DeleteException (struct _Unwind_Exception *);
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extern unsigned long _Unwind_GetGR (struct _Unwind_Context *, int);
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extern void _Unwind_SetGR (struct _Unwind_Context *, int, unsigned long);
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extern unsigned long _Unwind_GetIP (struct _Unwind_Context *);
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extern unsigned long _Unwind_GetIPInfo (struct _Unwind_Context *, int *);
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extern void _Unwind_SetIP (struct _Unwind_Context *, unsigned long);
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extern unsigned long _Unwind_GetLanguageSpecificData (struct _Unwind_Context*);
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extern unsigned long _Unwind_GetRegionStart (struct _Unwind_Context *);
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#ifdef _GNU_SOURCE
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/* Callback for _Unwind_Backtrace(). The backtrace stops immediately
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if the callback returns any value other than _URC_NO_REASON. */
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typedef _Unwind_Reason_Code (*_Unwind_Trace_Fn) (struct _Unwind_Context *,
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void *);
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/* See http://gcc.gnu.org/ml/gcc-patches/2001-09/msg00082.html for why
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_UA_END_OF_STACK exists. */
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# define _UA_END_OF_STACK 16
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/* If the unwind was initiated due to a forced unwind, resume that
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operation, else re-raise the exception. This is used by
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__cxa_rethrow(). */
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extern _Unwind_Reason_Code
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_Unwind_Resume_or_Rethrow (struct _Unwind_Exception *);
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/* See http://gcc.gnu.org/ml/gcc-patches/2003-09/msg00154.html for why
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_Unwind_GetBSP() exists. */
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extern unsigned long _Unwind_GetBSP (struct _Unwind_Context *);
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/* Return the "canonical frame address" for the given context.
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This is used by NPTL... */
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extern unsigned long _Unwind_GetCFA (struct _Unwind_Context *);
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/* Return the base-address for data references. */
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extern unsigned long _Unwind_GetDataRelBase (struct _Unwind_Context *);
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/* Return the base-address for text references. */
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extern unsigned long _Unwind_GetTextRelBase (struct _Unwind_Context *);
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/* Call _Unwind_Trace_Fn once for each stack-frame, without doing any
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cleanup. The first frame for which the callback is invoked is the
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one for the caller of _Unwind_Backtrace(). _Unwind_Backtrace()
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returns _URC_END_OF_STACK when the backtrace stopped due to
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reaching the end of the call-chain or _URC_FATAL_PHASE1_ERROR if it
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stops for any other reason. */
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extern _Unwind_Reason_Code _Unwind_Backtrace (_Unwind_Trace_Fn, void *);
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/* Find the start-address of the procedure containing the specified IP
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or NULL if it cannot be found (e.g., because the function has no
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unwind info). Note: there is not necessarily a one-to-one
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correspondence between source-level functions and procedures: some
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functions don't have unwind-info and others are split into multiple
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procedures. */
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extern void *_Unwind_FindEnclosingFunction (void *);
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/* See also Linux Standard Base Spec:
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http://www.linuxbase.org/spec/refspecs/LSB_1.3.0/gLSB/gLSB/libgcc-s.html */
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#endif /* _GNU_SOURCE */
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#define DECLARE_PERSONALITY_FUNCTION(name) \
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_Unwind_Reason_Code name(int version,\
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_Unwind_Action actions,\
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uint64_t exceptionClass,\
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struct _Unwind_Exception *exceptionObject,\
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struct _Unwind_Context *context);
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#define BEGIN_PERSONALITY_FUNCTION(name) \
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_Unwind_Reason_Code name(int version,\
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_Unwind_Action actions,\
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uint64_t exceptionClass,\
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struct _Unwind_Exception *exceptionObject,\
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struct _Unwind_Context *context)\
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{
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#define CALL_PERSONALITY_FUNCTION(name) name(version, actions, exceptionClass, exceptionObject, context)
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#ifdef __cplusplus
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}
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#endif
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#endif /* _UNWIND_H */
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