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/* Copyright (C) 2004 Garrett A. Kajmowicz
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This file is part of the uClibc++ Library.
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This library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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This library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with this library; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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#ifndef HEADER_ULC_SUPPORT
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#define HEADER_ULC_SUPPORT 1
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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_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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} _Unwind_Reason_Code;
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typedef void (*_Unwind_Exception_Cleanup_Fn)
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(_Unwind_Reason_Code reason, struct _Unwind_Exception *exc);
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//The following definitions were grabbed from the gcc implementation
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typedef unsigned _Unwind_Ptr __attribute__((__mode__(__pointer__)));
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typedef unsigned _Unwind_Word __attribute__((__mode__(__word__)));
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typedef signed _Unwind_Sword __attribute__((__mode__(__word__)));
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typedef unsigned _Unwind_Exception_Class __attribute__((__mode__(__DI__)));
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typedef void (*_Unwind_Exception_Cleanup_Fn) (_Unwind_Reason_Code, struct _Unwind_Exception *);
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typedef int _Unwind_Action;
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static const _Unwind_Action _UA_SEARCH_PHASE = 1;
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static const _Unwind_Action _UA_CLEANUP_PHASE = 2;
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static const _Unwind_Action _UA_HANDLER_FRAME = 4;
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static const _Unwind_Action _UA_FORCE_UNWIND = 8;
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const _Unwind_Exception_Class __uclibcxx_exception_class = ((((((((
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_Unwind_Exception_Class) 'u' << 8 | (_Unwind_Exception_Class) 'l') << 8
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| (_Unwind_Exception_Class) 'i') << 8 | (_Unwind_Exception_Class) 'b') << 8
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| (_Unwind_Exception_Class) 'C')<< 8 | (_Unwind_Exception_Class) '+') << 8
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| (_Unwind_Exception_Class) '+') << 8 | (_Unwind_Exception_Class) '\0');
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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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#define _UA_END_OF_STACK 16
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struct _Unwind_Exception{
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_Unwind_Exception_Class exception_class; //Type of exception, eg ulibC++\0
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_Unwind_Exception_Cleanup_Fn exception_cleanup; //Destructor if from diff runtime
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_Unwind_Word private_1; //Don't touch at all!
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_Unwind_Word private_2; //Don't touch at all!
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} __attribute__((__aligned__));
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//The following structure is system-dependent and defined by the compiler
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//Thus it's definition was copied from the gcc 3.4.0 header files
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struct _Unwind_Context;
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// void *reg[DWARF_FRAME_REGISTERS+1];
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// struct dwarf_eh_bases bases;
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// _Unwind_Word args_size;
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_Unwind_Reason_Code _Unwind_RaiseException ( struct _Unwind_Exception *exception_object );
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//_Unwind_ForcedUnwind
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typedef _Unwind_Reason_Code (*_Unwind_Stop_Fn)
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(int version, _Unwind_Action actions, _Unwind_Exception_Class exceptionClass,
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struct _Unwind_Exception *exceptionObject,
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struct _Unwind_Context *context, void *stop_parameter );
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_Unwind_Reason_Code _Unwind_ForcedUnwind (
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struct _Unwind_Exception *exception_object, _Unwind_Stop_Fn stop,
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void *stop_parameter );
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void _Unwind_Resume (struct _Unwind_Exception *exception_object);
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void _Unwind_DeleteException (struct _Unwind_Exception *exception_object);
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_Unwind_Word _Unwind_GetGR (struct _Unwind_Context *context, int index);
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void _Unwind_SetGR (struct _Unwind_Context *context, int index, _Unwind_Word);
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_Unwind_Ptr _Unwind_GetIP (struct _Unwind_Context *context);
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void _Unwind_SetIP (struct _Unwind_Context *context, _Unwind_Ptr new_value);
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_Unwind_Ptr _Unwind_GetLanguageSpecificData (struct _Unwind_Context *context);
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_Unwind_Ptr _Unwind_GetRegionStart (struct _Unwind_Context *context);
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_Unwind_Reason_Code (*__personality_routine)
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(int version, //Should be 1
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_Unwind_Action actions, //Actions the routine will perform (bitmask)
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_Unwind_Exception_Class exceptionClass, //Type of exception - vendor is high 4 bytes
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struct _Unwind_Exception *exceptionObject, //Points to exception header
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struct _Unwind_Context *context); //Unwinder state information
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/*The following part is the Level II ABI which is required for compatability*/
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//This might be the only stuff that *I* need to implement
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struct __cxa_exception {
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std::type_info *exceptionType; //Type of thrown exception
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void (*exceptionDestructor) (void *); //Pointer to the destructor
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unexpected_handler unexpectedHandler; //Unexpected handler to use
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terminate_handler terminateHandler; //Terminate handle to use
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__cxa_exception *nextException; //per thread linked list
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int handlerCount; //How many handlers have caught this
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int handlerSwitchValue;
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const char *actionRecord;
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const char *languageSpecificData;
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_Unwind_Exception unwindHeader;
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struct __cxa_eh_globals {
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__cxa_exception *caughtExceptions;
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unsigned int uncaughtExceptions;
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extern "C" __cxa_eh_globals *__cxa_get_globals(void); //Return ptr to the eh_globals object for current thread
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extern "C" __cxa_eh_globals *__cxa_get_globals_fast(void); //Same as above, assumes that above called at least once
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extern "C" void *__cxa_allocate_exception(size_t thrown_size); //Allocate space for exception plus header
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extern "C" void __cxa_free_exception(void *thrown_exception); //Free space allocated from the above
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extern "C" void __cxa_throw (void *thrown_exception, //This is the actual throw call
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// std::type_info *tinfo, //Type of object
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void * tinfo, //Type of object
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void (*dest) (void *) ); //Pointer to destructor destroy object
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src/utility/support
