diff options
Diffstat (limited to 'winsup/mingw/samples/seh/eh3.c')
-rw-r--r-- | winsup/mingw/samples/seh/eh3.c | 112 |
1 files changed, 0 insertions, 112 deletions
diff --git a/winsup/mingw/samples/seh/eh3.c b/winsup/mingw/samples/seh/eh3.c deleted file mode 100644 index 49a06ceab..000000000 --- a/winsup/mingw/samples/seh/eh3.c +++ /dev/null @@ -1,112 +0,0 @@ -int -__except_handler3( - struct _EXCEPTION_RECORD* pExceptionRecord, - struct EXCEPTION_REGISTRATION* pRegistrationFrame, - struct _CONTEXT* pContextRecord, - void* pDispatcherContext - ) -{ - LONG filterFuncRet; - LONG trylevel; - EXCEPTION_POINTERS exceptPtrs; - PSCOPETABLE pScopeTable; - - - CLD // Clear the direction flag (make no assumptions!) - - // if neither the EXCEPTION_UNWINDING nor EXCEPTION_EXIT_UNWIND bit - // is set... This is true the first time through the handler (the - // non-unwinding case) - - if ( ! (pExceptionRecord->ExceptionFlags - & (EXCEPTION_UNWINDING | EXCEPTION_EXIT_UNWIND) - ) ) - { - // Build the EXCEPTION_POINTERS structure on the stack - exceptPtrs.ExceptionRecord = pExceptionRecord; - exceptPtrs.ContextRecord = pContextRecord; - - // Put the pointer to the EXCEPTION_POINTERS 4 bytes below the - // establisher frame. See ASM code for GetExceptionInformation - *(PDWORD)((PBYTE)pRegistrationFrame - 4) = &exceptPtrs; - - // Get initial "trylevel" value - trylevel = pRegistrationFrame->trylevel - - // Get a pointer to the scopetable array - scopeTable = pRegistrationFrame->scopetable; - -search_for_handler: - if ( pRegistrationFrame->trylevel != TRYLEVEL_NONE ) - { - if ( pRegistrationFrame->scopetable[trylevel].lpfnFilter ) - { - - PUSH EBP // Save this frame EBP - - // !!!Very Important!!! Switch to original EBP. This is - // what allows all locals in the frame to have the same - // value as before the exception occurred. - - EBP = &pRegistrationFrame->_ebp - - // Call the filter function - filterFuncRet = scopetable[trylevel].lpfnFilter(); - - POP EBP // Restore handler frame EBP - - if ( filterFuncRet != EXCEPTION_CONTINUE_SEARCH ) - { - if ( filterFuncRet < 0 ) // EXCEPTION_CONTINUE_EXECUTION - return ExceptionContinueExecution; - - // If we get here, EXCEPTION_EXECUTE_HANDLER was specified - scopetable == pRegistrationFrame->scopetable - - // Does the actual OS cleanup of registration frames - // Causes this function to recurse - __global_unwind2( pRegistrationFrame ); - - - // Once we get here, everything is all cleaned up, except - // for the last frame, where we'll continue execution - EBP = &pRegistrationFrame->_ebp - - __local_unwind2( pRegistrationFrame, trylevel ); - - // NLG == "non-local-goto" (setjmp/longjmp stuff) - __NLG_Notify( 1 ); // EAX == scopetable->lpfnHandler - - // Set the current trylevel to whatever SCOPETABLE entry - // was being used when a handler was found - pRegistrationFrame->trylevel = scopetable->previousTryLevel; - - // Call the _except {} block. Never returns. - pRegistrationFrame->scopetable[trylevel].lpfnHandler(); - } - } - - scopeTable = pRegistrationFrame->scopetable; - trylevel = scopeTable->previousTryLevel - - goto search_for_handler; - } - else // trylevel == TRYLEVEL_NONE - { - retvalue == DISPOSITION_CONTINUE_SEARCH; - } - } - else // EXCEPTION_UNWINDING or EXCEPTION_EXIT_UNWIND flags are set - { - PUSH EBP // Save EBP - - EBP = pRegistrationFrame->_ebp // Set EBP for __local_unwind2 - - __local_unwind2( pRegistrationFrame, TRYLEVEL_NONE ) - - POP EBP // Restore EBP - - retvalue == DISPOSITION_CONTINUE_SEARCH; - } -} - |