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Unified Diff: gcc/libstdc++-v3/libsupc++/eh_personality.cc

Issue 3050029: [gcc] GCC 4.5.0=>4.5.1 (Closed) Base URL: ssh://git@gitrw.chromium.org:9222/nacl-toolchain.git
Patch Set: Created 10 years, 5 months ago
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Index: gcc/libstdc++-v3/libsupc++/eh_personality.cc
diff --git a/gcc/libstdc++-v3/libsupc++/eh_personality.cc b/gcc/libstdc++-v3/libsupc++/eh_personality.cc
deleted file mode 100644
index befb26c9d3a9a81c23814e295742bca63d746239..0000000000000000000000000000000000000000
--- a/gcc/libstdc++-v3/libsupc++/eh_personality.cc
+++ /dev/null
@@ -1,786 +0,0 @@
-// -*- C++ -*- The GNU C++ exception personality routine.
-// Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009
-// Free Software Foundation, Inc.
-//
-// This file is part of GCC.
-//
-// GCC is free software; you can redistribute it and/or modify
-// it under the terms of the GNU General Public License as published by
-// the Free Software Foundation; either version 3, or (at your option)
-// any later version.
-//
-// GCC is distributed in the hope that it will be useful,
-// but WITHOUT ANY WARRANTY; without even the implied warranty of
-// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-// GNU General Public License for more details.
-//
-// Under Section 7 of GPL version 3, you are granted additional
-// permissions described in the GCC Runtime Library Exception, version
-// 3.1, as published by the Free Software Foundation.
-
-// You should have received a copy of the GNU General Public License and
-// a copy of the GCC Runtime Library Exception along with this program;
-// see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
-// <http://www.gnu.org/licenses/>.
-
-#include <bits/c++config.h>
-#include <cstdlib>
-#include <exception_defines.h>
-#include <cxxabi.h>
-#include "unwind-cxx.h"
-
-using namespace __cxxabiv1;
-
-#ifdef __ARM_EABI_UNWINDER__
-#define NO_SIZE_OF_ENCODED_VALUE
-#endif
-
-#include "unwind-pe.h"
-
-
-struct lsda_header_info
-{
- _Unwind_Ptr Start;
- _Unwind_Ptr LPStart;
- _Unwind_Ptr ttype_base;
- const unsigned char *TType;
- const unsigned char *action_table;
- unsigned char ttype_encoding;
- unsigned char call_site_encoding;
-};
-
-static const unsigned char *
-parse_lsda_header (_Unwind_Context *context, const unsigned char *p,
- lsda_header_info *info)
-{
- _uleb128_t tmp;
- unsigned char lpstart_encoding;
-
- info->Start = (context ? _Unwind_GetRegionStart (context) : 0);
-
- // Find @LPStart, the base to which landing pad offsets are relative.
- lpstart_encoding = *p++;
- if (lpstart_encoding != DW_EH_PE_omit)
- p = read_encoded_value (context, lpstart_encoding, p, &info->LPStart);
- else
- info->LPStart = info->Start;
-
- // Find @TType, the base of the handler and exception spec type data.
- info->ttype_encoding = *p++;
- if (info->ttype_encoding != DW_EH_PE_omit)
- {
- p = read_uleb128 (p, &tmp);
- info->TType = p + tmp;
- }
- else
- info->TType = 0;
-
- // The encoding and length of the call-site table; the action table
- // immediately follows.
- info->call_site_encoding = *p++;
- p = read_uleb128 (p, &tmp);
- info->action_table = p + tmp;
-
- return p;
-}
-
-#ifdef __ARM_EABI_UNWINDER__
-
-// Return an element from a type table.
-
-static const std::type_info*
-get_ttype_entry(lsda_header_info* info, _uleb128_t i)
-{
- _Unwind_Ptr ptr;
-
- ptr = (_Unwind_Ptr) (info->TType - (i * 4));
- ptr = _Unwind_decode_target2(ptr);
-
- return reinterpret_cast<const std::type_info *>(ptr);
-}
-
-// The ABI provides a routine for matching exception object types.
-typedef _Unwind_Control_Block _throw_typet;
-#define get_adjusted_ptr(catch_type, throw_type, thrown_ptr_p) \
- (__cxa_type_match (throw_type, catch_type, false, thrown_ptr_p) \
- != ctm_failed)
-
-// Return true if THROW_TYPE matches one if the filter types.
-
-static bool
-check_exception_spec(lsda_header_info* info, _throw_typet* throw_type,
- void* thrown_ptr, _sleb128_t filter_value)
-{
- const _uleb128_t* e = ((const _uleb128_t*) info->TType)
- - filter_value - 1;
-
- while (1)
- {
- const std::type_info* catch_type;
- _uleb128_t tmp;
-
- tmp = *e;
-
- // Zero signals the end of the list. If we've not found
- // a match by now, then we've failed the specification.
- if (tmp == 0)
- return false;
-
- tmp = _Unwind_decode_target2((_Unwind_Word) e);
-
- // Match a ttype entry.
- catch_type = reinterpret_cast<const std::type_info*>(tmp);
-
- // ??? There is currently no way to ask the RTTI code about the
- // relationship between two types without reference to a specific
- // object. There should be; then we wouldn't need to mess with
- // thrown_ptr here.
- if (get_adjusted_ptr(catch_type, throw_type, &thrown_ptr))
- return true;
-
- // Advance to the next entry.
- e++;
- }
-}
-
-
-// Save stage1 handler information in the exception object
-
-static inline void
-save_caught_exception(struct _Unwind_Exception* ue_header,
- struct _Unwind_Context* context,
- void* thrown_ptr,
- int handler_switch_value,
- const unsigned char* language_specific_data,
- _Unwind_Ptr landing_pad,
- const unsigned char* action_record
- __attribute__((__unused__)))
-{
- ue_header->barrier_cache.sp = _Unwind_GetGR(context, 13);
- ue_header->barrier_cache.bitpattern[0] = (_uw) thrown_ptr;
- ue_header->barrier_cache.bitpattern[1]
- = (_uw) handler_switch_value;
- ue_header->barrier_cache.bitpattern[2]
- = (_uw) language_specific_data;
- ue_header->barrier_cache.bitpattern[3] = (_uw) landing_pad;
-}
-
-
-// Restore the catch handler data saved during phase1.
-
-static inline void
-restore_caught_exception(struct _Unwind_Exception* ue_header,
- int& handler_switch_value,
- const unsigned char*& language_specific_data,
- _Unwind_Ptr& landing_pad)
-{
- handler_switch_value = (int) ue_header->barrier_cache.bitpattern[1];
- language_specific_data =
- (const unsigned char*) ue_header->barrier_cache.bitpattern[2];
- landing_pad = (_Unwind_Ptr) ue_header->barrier_cache.bitpattern[3];
-}
-
-#define CONTINUE_UNWINDING \
- do \
- { \
- if (__gnu_unwind_frame(ue_header, context) != _URC_OK) \
- return _URC_FAILURE; \
- return _URC_CONTINUE_UNWIND; \
- } \
- while (0)
-
-// Return true if the filter spec is empty, ie throw().
-
-static bool
-empty_exception_spec (lsda_header_info *info, _Unwind_Sword filter_value)
-{
- const _Unwind_Word* e = ((const _Unwind_Word*) info->TType)
- - filter_value - 1;
-
- return *e == 0;
-}
-
-#else
-typedef const std::type_info _throw_typet;
-
-
-// Return an element from a type table.
-
-static const std::type_info *
-get_ttype_entry (lsda_header_info *info, _uleb128_t i)
-{
- _Unwind_Ptr ptr;
-
- i *= size_of_encoded_value (info->ttype_encoding);
- read_encoded_value_with_base (info->ttype_encoding, info->ttype_base,
- info->TType - i, &ptr);
-
- return reinterpret_cast<const std::type_info *>(ptr);
-}
-
-// Given the thrown type THROW_TYPE, pointer to a variable containing a
-// pointer to the exception object THROWN_PTR_P and a type CATCH_TYPE to
-// compare against, return whether or not there is a match and if so,
-// update *THROWN_PTR_P.
-
-static bool
-get_adjusted_ptr (const std::type_info *catch_type,
- const std::type_info *throw_type,
- void **thrown_ptr_p)
-{
- void *thrown_ptr = *thrown_ptr_p;
-
- // Pointer types need to adjust the actual pointer, not
- // the pointer to pointer that is the exception object.
- // This also has the effect of passing pointer types
- // "by value" through the __cxa_begin_catch return value.
- if (throw_type->__is_pointer_p ())
- thrown_ptr = *(void **) thrown_ptr;
-
- if (catch_type->__do_catch (throw_type, &thrown_ptr, 1))
- {
- *thrown_ptr_p = thrown_ptr;
- return true;
- }
-
- return false;
-}
-
-// Return true if THROW_TYPE matches one if the filter types.
-
-static bool
-check_exception_spec(lsda_header_info* info, _throw_typet* throw_type,
- void* thrown_ptr, _sleb128_t filter_value)
-{
- const unsigned char *e = info->TType - filter_value - 1;
-
- while (1)
- {
- const std::type_info *catch_type;
- _uleb128_t tmp;
-
- e = read_uleb128 (e, &tmp);
-
- // Zero signals the end of the list. If we've not found
- // a match by now, then we've failed the specification.
- if (tmp == 0)
- return false;
-
- // Match a ttype entry.
- catch_type = get_ttype_entry (info, tmp);
-
- // ??? There is currently no way to ask the RTTI code about the
- // relationship between two types without reference to a specific
- // object. There should be; then we wouldn't need to mess with
- // thrown_ptr here.
- if (get_adjusted_ptr (catch_type, throw_type, &thrown_ptr))
- return true;
- }
-}
-
-
-// Save stage1 handler information in the exception object
-
-static inline void
-save_caught_exception(struct _Unwind_Exception* ue_header,
- struct _Unwind_Context* context
- __attribute__((__unused__)),
- void* thrown_ptr,
- int handler_switch_value,
- const unsigned char* language_specific_data,
- _Unwind_Ptr landing_pad __attribute__((__unused__)),
- const unsigned char* action_record)
-{
- __cxa_exception* xh = __get_exception_header_from_ue(ue_header);
-
- xh->handlerSwitchValue = handler_switch_value;
- xh->actionRecord = action_record;
- xh->languageSpecificData = language_specific_data;
- xh->adjustedPtr = thrown_ptr;
-
- // ??? Completely unknown what this field is supposed to be for.
- // ??? Need to cache TType encoding base for call_unexpected.
- xh->catchTemp = landing_pad;
-}
-
-
-// Restore the catch handler information saved during phase1.
-
-static inline void
-restore_caught_exception(struct _Unwind_Exception* ue_header,
- int& handler_switch_value,
- const unsigned char*& language_specific_data,
- _Unwind_Ptr& landing_pad)
-{
- __cxa_exception* xh = __get_exception_header_from_ue(ue_header);
- handler_switch_value = xh->handlerSwitchValue;
- language_specific_data = xh->languageSpecificData;
- landing_pad = (_Unwind_Ptr) xh->catchTemp;
-}
-
-#define CONTINUE_UNWINDING return _URC_CONTINUE_UNWIND
-
-// Return true if the filter spec is empty, ie throw().
-
-static bool
-empty_exception_spec (lsda_header_info *info, _Unwind_Sword filter_value)
-{
- const unsigned char *e = info->TType - filter_value - 1;
- _uleb128_t tmp;
-
- e = read_uleb128 (e, &tmp);
- return tmp == 0;
-}
-
-#endif // !__ARM_EABI_UNWINDER__
-
-namespace __cxxabiv1
-{
-
-// Using a different personality function name causes link failures
-// when trying to mix code using different exception handling models.
-#ifdef _GLIBCXX_SJLJ_EXCEPTIONS
-#define PERSONALITY_FUNCTION __gxx_personality_sj0
-#define __builtin_eh_return_data_regno(x) x
-#else
-#define PERSONALITY_FUNCTION __gxx_personality_v0
-#endif
-
-extern "C" _Unwind_Reason_Code
-#ifdef __ARM_EABI_UNWINDER__
-PERSONALITY_FUNCTION (_Unwind_State state,
- struct _Unwind_Exception* ue_header,
- struct _Unwind_Context* context)
-#else
-PERSONALITY_FUNCTION (int version,
- _Unwind_Action actions,
- _Unwind_Exception_Class exception_class,
- struct _Unwind_Exception *ue_header,
- struct _Unwind_Context *context)
-#endif
-{
- enum found_handler_type
- {
- found_nothing,
- found_terminate,
- found_cleanup,
- found_handler
- } found_type;
-
- lsda_header_info info;
- const unsigned char *language_specific_data;
- const unsigned char *action_record;
- const unsigned char *p;
- _Unwind_Ptr landing_pad, ip;
- int handler_switch_value;
- void* thrown_ptr = 0;
- bool foreign_exception;
- int ip_before_insn = 0;
-
-#ifdef __ARM_EABI_UNWINDER__
- _Unwind_Action actions;
-
- switch (state & _US_ACTION_MASK)
- {
- case _US_VIRTUAL_UNWIND_FRAME:
- actions = _UA_SEARCH_PHASE;
- break;
-
- case _US_UNWIND_FRAME_STARTING:
- actions = _UA_CLEANUP_PHASE;
- if (!(state & _US_FORCE_UNWIND)
- && ue_header->barrier_cache.sp == _Unwind_GetGR(context, 13))
- actions |= _UA_HANDLER_FRAME;
- break;
-
- case _US_UNWIND_FRAME_RESUME:
- CONTINUE_UNWINDING;
- break;
-
- default:
- std::abort();
- }
- actions |= state & _US_FORCE_UNWIND;
-
- // We don't know which runtime we're working with, so can't check this.
- // However the ABI routines hide this from us, and we don't actually need
- // to know.
- foreign_exception = false;
-
- // The dwarf unwinder assumes the context structure holds things like the
- // function and LSDA pointers. The ARM implementation caches these in
- // the exception header (UCB). To avoid rewriting everything we make the
- // virtual IP register point at the UCB.
- ip = (_Unwind_Ptr) ue_header;
- _Unwind_SetGR(context, 12, ip);
-#else
- __cxa_exception* xh = __get_exception_header_from_ue(ue_header);
-
- // Interface version check.
- if (version != 1)
- return _URC_FATAL_PHASE1_ERROR;
- foreign_exception = !__is_gxx_exception_class(exception_class);
-#endif
-
- // Shortcut for phase 2 found handler for domestic exception.
- if (actions == (_UA_CLEANUP_PHASE | _UA_HANDLER_FRAME)
- && !foreign_exception)
- {
- restore_caught_exception(ue_header, handler_switch_value,
- language_specific_data, landing_pad);
- found_type = (landing_pad == 0 ? found_terminate : found_handler);
- goto install_context;
- }
-
- language_specific_data = (const unsigned char *)
- _Unwind_GetLanguageSpecificData (context);
-
- // If no LSDA, then there are no handlers or cleanups.
- if (! language_specific_data)
- CONTINUE_UNWINDING;
-
- // Parse the LSDA header.
- p = parse_lsda_header (context, language_specific_data, &info);
- info.ttype_base = base_of_encoded_value (info.ttype_encoding, context);
-#ifdef _GLIBCXX_HAVE_GETIPINFO
- ip = _Unwind_GetIPInfo (context, &ip_before_insn);
-#else
- ip = _Unwind_GetIP (context);
-#endif
- if (! ip_before_insn)
- --ip;
- landing_pad = 0;
- action_record = 0;
- handler_switch_value = 0;
-
-#ifdef _GLIBCXX_SJLJ_EXCEPTIONS
- // The given "IP" is an index into the call-site table, with two
- // exceptions -- -1 means no-action, and 0 means terminate. But
- // since we're using uleb128 values, we've not got random access
- // to the array.
- if ((int) ip < 0)
- return _URC_CONTINUE_UNWIND;
- else if (ip == 0)
- {
- // Fall through to set found_terminate.
- }
- else
- {
- _uleb128_t cs_lp, cs_action;
- do
- {
- p = read_uleb128 (p, &cs_lp);
- p = read_uleb128 (p, &cs_action);
- }
- while (--ip);
-
- // Can never have null landing pad for sjlj -- that would have
- // been indicated by a -1 call site index.
- landing_pad = cs_lp + 1;
- if (cs_action)
- action_record = info.action_table + cs_action - 1;
- goto found_something;
- }
-#else
- // Search the call-site table for the action associated with this IP.
- while (p < info.action_table)
- {
- _Unwind_Ptr cs_start, cs_len, cs_lp;
- _uleb128_t cs_action;
-
- // Note that all call-site encodings are "absolute" displacements.
- p = read_encoded_value (0, info.call_site_encoding, p, &cs_start);
- p = read_encoded_value (0, info.call_site_encoding, p, &cs_len);
- p = read_encoded_value (0, info.call_site_encoding, p, &cs_lp);
- p = read_uleb128 (p, &cs_action);
-
- // The table is sorted, so if we've passed the ip, stop.
- if (ip < info.Start + cs_start)
- p = info.action_table;
- else if (ip < info.Start + cs_start + cs_len)
- {
- if (cs_lp)
- landing_pad = info.LPStart + cs_lp;
- if (cs_action)
- action_record = info.action_table + cs_action - 1;
- goto found_something;
- }
- }
-#endif // _GLIBCXX_SJLJ_EXCEPTIONS
-
- // If ip is not present in the table, call terminate. This is for
- // a destructor inside a cleanup, or a library routine the compiler
- // was not expecting to throw.
- found_type = found_terminate;
- goto do_something;
-
- found_something:
- if (landing_pad == 0)
- {
- // If ip is present, and has a null landing pad, there are
- // no cleanups or handlers to be run.
- found_type = found_nothing;
- }
- else if (action_record == 0)
- {
- // If ip is present, has a non-null landing pad, and a null
- // action table offset, then there are only cleanups present.
- // Cleanups use a zero switch value, as set above.
- found_type = found_cleanup;
- }
- else
- {
- // Otherwise we have a catch handler or exception specification.
-
- _sleb128_t ar_filter, ar_disp;
- const std::type_info* catch_type;
- _throw_typet* throw_type;
- bool saw_cleanup = false;
- bool saw_handler = false;
-
-#ifdef __ARM_EABI_UNWINDER__
- // ??? How does this work - more importantly, how does it interact with
- // dependent exceptions?
- throw_type = ue_header;
- if (actions & _UA_FORCE_UNWIND)
- {
- __GXX_INIT_FORCED_UNWIND_CLASS(ue_header->exception_class);
- }
- else if (!foreign_exception)
- thrown_ptr = __get_object_from_ue (ue_header);
-#else
- // During forced unwinding, match a magic exception type.
- if (actions & _UA_FORCE_UNWIND)
- {
- throw_type = &typeid(abi::__forced_unwind);
- }
- // With a foreign exception class, there's no exception type.
- // ??? What to do about GNU Java and GNU Ada exceptions?
- else if (foreign_exception)
- {
- throw_type = &typeid(abi::__foreign_exception);
- }
- else
- {
- thrown_ptr = __get_object_from_ue (ue_header);
- throw_type = __get_exception_header_from_obj
- (thrown_ptr)->exceptionType;
- }
-#endif
-
- while (1)
- {
- p = action_record;
- p = read_sleb128 (p, &ar_filter);
- read_sleb128 (p, &ar_disp);
-
- if (ar_filter == 0)
- {
- // Zero filter values are cleanups.
- saw_cleanup = true;
- }
- else if (ar_filter > 0)
- {
- // Positive filter values are handlers.
- catch_type = get_ttype_entry (&info, ar_filter);
-
- // Null catch type is a catch-all handler; we can catch foreign
- // exceptions with this. Otherwise we must match types.
- if (! catch_type
- || (throw_type
- && get_adjusted_ptr (catch_type, throw_type,
- &thrown_ptr)))
- {
- saw_handler = true;
- break;
- }
- }
- else
- {
- // Negative filter values are exception specifications.
- // ??? How do foreign exceptions fit in? As far as I can
- // see we can't match because there's no __cxa_exception
- // object to stuff bits in for __cxa_call_unexpected to use.
- // Allow them iff the exception spec is non-empty. I.e.
- // a throw() specification results in __unexpected.
- if ((throw_type
- && !(actions & _UA_FORCE_UNWIND)
- && !foreign_exception)
- ? ! check_exception_spec (&info, throw_type, thrown_ptr,
- ar_filter)
- : empty_exception_spec (&info, ar_filter))
- {
- saw_handler = true;
- break;
- }
- }
-
- if (ar_disp == 0)
- break;
- action_record = p + ar_disp;
- }
-
- if (saw_handler)
- {
- handler_switch_value = ar_filter;
- found_type = found_handler;
- }
- else
- found_type = (saw_cleanup ? found_cleanup : found_nothing);
- }
-
- do_something:
- if (found_type == found_nothing)
- CONTINUE_UNWINDING;
-
- if (actions & _UA_SEARCH_PHASE)
- {
- if (found_type == found_cleanup)
- CONTINUE_UNWINDING;
-
- // For domestic exceptions, we cache data from phase 1 for phase 2.
- if (!foreign_exception)
- {
- save_caught_exception(ue_header, context, thrown_ptr,
- handler_switch_value, language_specific_data,
- landing_pad, action_record);
- }
- return _URC_HANDLER_FOUND;
- }
-
- install_context:
-
- // We can't use any of the cxa routines with foreign exceptions,
- // because they all expect ue_header to be a struct __cxa_exception.
- // So in that case, call terminate or unexpected directly.
- if ((actions & _UA_FORCE_UNWIND)
- || foreign_exception)
- {
- if (found_type == found_terminate)
- std::terminate ();
- else if (handler_switch_value < 0)
- {
- __try
- { std::unexpected (); }
- __catch(...)
- { std::terminate (); }
- }
- }
- else
- {
- if (found_type == found_terminate)
- __cxa_call_terminate(ue_header);
-
- // Cache the TType base value for __cxa_call_unexpected, as we won't
- // have an _Unwind_Context then.
- if (handler_switch_value < 0)
- {
- parse_lsda_header (context, language_specific_data, &info);
-
-#ifdef __ARM_EABI_UNWINDER__
- const _Unwind_Word* e;
- _Unwind_Word n;
-
- e = ((const _Unwind_Word*) info.TType) - handler_switch_value - 1;
- // Count the number of rtti objects.
- n = 0;
- while (e[n] != 0)
- n++;
-
- // Count.
- ue_header->barrier_cache.bitpattern[1] = n;
- // Base (obsolete)
- ue_header->barrier_cache.bitpattern[2] = 0;
- // Stride.
- ue_header->barrier_cache.bitpattern[3] = 4;
- // List head.
- ue_header->barrier_cache.bitpattern[4] = (_Unwind_Word) e;
-#else
- xh->catchTemp = base_of_encoded_value (info.ttype_encoding, context);
-#endif
- }
- }
-
- /* For targets with pointers smaller than the word size, we must extend the
- pointer, and this extension is target dependent. */
- _Unwind_SetGR (context, __builtin_eh_return_data_regno (0),
- __builtin_extend_pointer (ue_header));
- _Unwind_SetGR (context, __builtin_eh_return_data_regno (1),
- handler_switch_value);
- _Unwind_SetIP (context, landing_pad);
-#ifdef __ARM_EABI_UNWINDER__
- if (found_type == found_cleanup)
- __cxa_begin_cleanup(ue_header);
-#endif
- return _URC_INSTALL_CONTEXT;
-}
-
-/* The ARM EABI implementation of __cxa_call_unexpected is in a
- different file so that the personality routine (PR) can be used
- standalone. The generic routine shared datastructures with the PR
- so it is most convenient to implement it here. */
-#ifndef __ARM_EABI_UNWINDER__
-extern "C" void
-__cxa_call_unexpected (void *exc_obj_in)
-{
- _Unwind_Exception *exc_obj
- = reinterpret_cast <_Unwind_Exception *>(exc_obj_in);
-
- __cxa_begin_catch (exc_obj);
-
- // This function is a handler for our exception argument. If we exit
- // by throwing a different exception, we'll need the original cleaned up.
- struct end_catch_protect
- {
- end_catch_protect() { }
- ~end_catch_protect() { __cxa_end_catch(); }
- } end_catch_protect_obj;
-
- lsda_header_info info;
- __cxa_exception *xh = __get_exception_header_from_ue (exc_obj);
- const unsigned char *xh_lsda;
- _Unwind_Sword xh_switch_value;
- std::terminate_handler xh_terminate_handler;
-
- // If the unexpectedHandler rethrows the exception (e.g. to categorize it),
- // it will clobber data about the current handler. So copy the data out now.
- xh_lsda = xh->languageSpecificData;
- xh_switch_value = xh->handlerSwitchValue;
- xh_terminate_handler = xh->terminateHandler;
- info.ttype_base = (_Unwind_Ptr) xh->catchTemp;
-
- __try
- { __unexpected (xh->unexpectedHandler); }
- __catch(...)
- {
- // Get the exception thrown from unexpected.
-
- __cxa_eh_globals *globals = __cxa_get_globals_fast ();
- __cxa_exception *new_xh = globals->caughtExceptions;
- void *new_ptr = __get_object_from_ambiguous_exception (new_xh);
-
- // We don't quite have enough stuff cached; re-parse the LSDA.
- parse_lsda_header (0, xh_lsda, &info);
-
- // If this new exception meets the exception spec, allow it.
- if (check_exception_spec (&info, __get_exception_header_from_obj
- (new_ptr)->exceptionType,
- new_ptr, xh_switch_value))
- __throw_exception_again;
-
- // If the exception spec allows std::bad_exception, throw that.
- // We don't have a thrown object to compare against, but since
- // bad_exception doesn't have virtual bases, that's OK; just pass 0.
-#ifdef __EXCEPTIONS
- const std::type_info &bad_exc = typeid (std::bad_exception);
- if (check_exception_spec (&info, &bad_exc, 0, xh_switch_value))
- throw std::bad_exception();
-#endif
-
- // Otherwise, die.
- __terminate (xh_terminate_handler);
- }
-}
-#endif
-
-} // namespace __cxxabiv1
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