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 |