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Diffstat (limited to 'misc/uClibc++/include/cxx/support')
-rw-r--r-- | misc/uClibc++/include/cxx/support | 165 |
1 files changed, 165 insertions, 0 deletions
diff --git a/misc/uClibc++/include/cxx/support b/misc/uClibc++/include/cxx/support new file mode 100644 index 000000000..9279987ad --- /dev/null +++ b/misc/uClibc++/include/cxx/support @@ -0,0 +1,165 @@ +/* Copyright (C) 2004 Garrett A. Kajmowicz + + This file is part of the uClibc++ Library. + + This library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + This library 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 + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with this library; if not, write to the Free Software + Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA +*/ + +#include <exception> +#include <cstdlib> +#include <typeinfo> + +#ifndef HEADER_ULC_SUPPORT +#define HEADER_ULC_SUPPORT 1 + +using namespace std; + +//From C++ ABI spec +typedef enum { + _URC_NO_REASON = 0, + _URC_FOREIGN_EXCEPTION_CAUGHT = 1, + _URC_FATAL_PHASE2_ERROR = 2, + _URC_FATAL_PHASE1_ERROR = 3, + _URC_NORMAL_STOP = 4, + _URC_END_OF_STACK = 5, + _URC_HANDLER_FOUND = 6, + _URC_INSTALL_CONTEXT = 7, + _URC_CONTINUE_UNWIND = 8 +} _Unwind_Reason_Code; + + +typedef void (*_Unwind_Exception_Cleanup_Fn) + (_Unwind_Reason_Code reason, struct _Unwind_Exception *exc); + +//The following definitions were grabbed from the gcc implementation +typedef unsigned _Unwind_Ptr __attribute__((__mode__(__pointer__))); +typedef unsigned _Unwind_Word __attribute__((__mode__(__word__))); +typedef signed _Unwind_Sword __attribute__((__mode__(__word__))); +typedef unsigned _Unwind_Exception_Class __attribute__((__mode__(__DI__))); +typedef void (*_Unwind_Exception_Cleanup_Fn) (_Unwind_Reason_Code, struct _Unwind_Exception *); + +typedef int _Unwind_Action; +static const _Unwind_Action _UA_SEARCH_PHASE = 1; +static const _Unwind_Action _UA_CLEANUP_PHASE = 2; +static const _Unwind_Action _UA_HANDLER_FRAME = 4; +static const _Unwind_Action _UA_FORCE_UNWIND = 8; + +const _Unwind_Exception_Class __uclibcxx_exception_class = (((((((( + _Unwind_Exception_Class) 'u' << 8 | (_Unwind_Exception_Class) 'l') << 8 + | (_Unwind_Exception_Class) 'i') << 8 | (_Unwind_Exception_Class) 'b') << 8 + | (_Unwind_Exception_Class) 'C')<< 8 | (_Unwind_Exception_Class) '+') << 8 + | (_Unwind_Exception_Class) '+') << 8 | (_Unwind_Exception_Class) '\0'); + + +#define _UA_SEARCH_PHASE 1 +#define _UA_CLEANUP_PHASE 2 +#define _UA_HANDLER_FRAME 4 +#define _UA_FORCE_UNWIND 8 +#define _UA_END_OF_STACK 16 + +struct _Unwind_Exception{ + _Unwind_Exception_Class exception_class; //Type of exception, eg ulibC++\0 + _Unwind_Exception_Cleanup_Fn exception_cleanup; //Destructor if from diff runtime + _Unwind_Word private_1; //Don't touch at all! + _Unwind_Word private_2; //Don't touch at all! +} __attribute__((__aligned__)); + + +//The following structure is system-dependent and defined by the compiler +//Thus it's definition was copied from the gcc 3.4.0 header files +struct _Unwind_Context; +//{ +// void *reg[DWARF_FRAME_REGISTERS+1]; +// void *cfa; +// void *ra; +// void *lsda; +// struct dwarf_eh_bases bases; +// _Unwind_Word args_size; +//}; + + + +_Unwind_Reason_Code _Unwind_RaiseException ( struct _Unwind_Exception *exception_object ); + +//_Unwind_ForcedUnwind + +typedef _Unwind_Reason_Code (*_Unwind_Stop_Fn) + (int version, _Unwind_Action actions, _Unwind_Exception_Class exceptionClass, + struct _Unwind_Exception *exceptionObject, + struct _Unwind_Context *context, void *stop_parameter ); + +_Unwind_Reason_Code _Unwind_ForcedUnwind ( + struct _Unwind_Exception *exception_object, _Unwind_Stop_Fn stop, + void *stop_parameter ); + +void _Unwind_Resume (struct _Unwind_Exception *exception_object); +void _Unwind_DeleteException (struct _Unwind_Exception *exception_object); + +_Unwind_Word _Unwind_GetGR (struct _Unwind_Context *context, int index); +void _Unwind_SetGR (struct _Unwind_Context *context, int index, _Unwind_Word); + +_Unwind_Ptr _Unwind_GetIP (struct _Unwind_Context *context); +void _Unwind_SetIP (struct _Unwind_Context *context, _Unwind_Ptr new_value); + +_Unwind_Ptr _Unwind_GetLanguageSpecificData (struct _Unwind_Context *context); +_Unwind_Ptr _Unwind_GetRegionStart (struct _Unwind_Context *context); + +_Unwind_Reason_Code (*__personality_routine) + (int version, //Should be 1 + _Unwind_Action actions, //Actions the routine will perform (bitmask) + _Unwind_Exception_Class exceptionClass, //Type of exception - vendor is high 4 bytes + struct _Unwind_Exception *exceptionObject, //Points to exception header + struct _Unwind_Context *context); //Unwinder state information + + +/*The following part is the Level II ABI which is required for compatability*/ +//This might be the only stuff that *I* need to implement + +struct __cxa_exception { + std::type_info *exceptionType; //Type of thrown exception + void (*exceptionDestructor) (void *); //Pointer to the destructor + unexpected_handler unexpectedHandler; //Unexpected handler to use + terminate_handler terminateHandler; //Terminate handle to use + __cxa_exception *nextException; //per thread linked list + + int handlerCount; //How many handlers have caught this + int handlerSwitchValue; + const char *actionRecord; + const char *languageSpecificData; + void *catchTemp; + void *adjustedPtr; + + _Unwind_Exception unwindHeader; +}; + +struct __cxa_eh_globals { + __cxa_exception *caughtExceptions; + unsigned int uncaughtExceptions; +}; + +extern "C" __cxa_eh_globals *__cxa_get_globals(void); //Return ptr to the eh_globals object for current thread +extern "C" __cxa_eh_globals *__cxa_get_globals_fast(void); //Same as above, assumes that above called at least once + +extern "C" void *__cxa_allocate_exception(size_t thrown_size); //Allocate space for exception plus header +extern "C" void __cxa_free_exception(void *thrown_exception); //Free space allocated from the above + +extern "C" void __cxa_throw (void *thrown_exception, //This is the actual throw call +// std::type_info *tinfo, //Type of object + void * tinfo, //Type of object + void (*dest) (void *) ); //Pointer to destructor destroy object + + +#endif + |