695 lines
21 KiB
C
695 lines
21 KiB
C
/*
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* NT exception handling routines
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*
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* Copyright 1999 Turchanov Sergey
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* Copyright 1999 Alexandre Julliard
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*/
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#include <signal.h>
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#include "winnt.h"
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#include "ntddk.h"
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#include "process.h"
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#include "global.h"
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#include "wine/exception.h"
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#include "stackframe.h"
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#include "sig_context.h"
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#include "miscemu.h"
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#include "debugtools.h"
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DEFAULT_DEBUG_CHANNEL(seh)
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/* Exception record for handling exceptions happening inside exception handlers */
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typedef struct
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{
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EXCEPTION_FRAME frame;
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EXCEPTION_FRAME *prevFrame;
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} EXC_NESTED_FRAME;
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#ifdef __i386__
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# define GET_IP(context) ((LPVOID)EIP_reg(context))
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#else
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# define GET_IP(context) ((LPVOID)0)
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#endif /* __i386__ */
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/* Default hook for built-in debugger */
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static DWORD default_hook( EXCEPTION_RECORD *rec, CONTEXT *ctx, BOOL first )
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{
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if (!first)
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{
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DPRINTF( "stopping process due to unhandled exception %08lx.\n",
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rec->ExceptionCode );
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raise( SIGSTOP );
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}
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return 0; /* not handled */
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}
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static DEBUGHOOK debug_hook = default_hook;
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/*******************************************************************
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* EXC_SetDebugEventHook
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* EXC_GetDebugEventHook
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*
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* Set/Get the hook for the built-in debugger.
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*
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* FIXME: the built-in debugger should use the normal debug events.
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*/
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void EXC_SetDebugEventHook( DEBUGHOOK hook )
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{
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debug_hook = hook;
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}
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DEBUGHOOK EXC_GetDebugEventHook(void)
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{
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return debug_hook;
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}
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/*******************************************************************
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* EXC_RaiseHandler
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*
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* Handler for exceptions happening inside a handler.
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*/
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static DWORD CALLBACK EXC_RaiseHandler( EXCEPTION_RECORD *rec, EXCEPTION_FRAME *frame,
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CONTEXT *context, EXCEPTION_FRAME **dispatcher )
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{
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if (rec->ExceptionFlags & (EH_UNWINDING | EH_EXIT_UNWIND))
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return ExceptionContinueSearch;
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/* We shouldn't get here so we store faulty frame in dispatcher */
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*dispatcher = ((EXC_NESTED_FRAME*)frame)->prevFrame;
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return ExceptionNestedException;
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}
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/*******************************************************************
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* EXC_UnwindHandler
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*
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* Handler for exceptions happening inside an unwind handler.
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*/
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static DWORD CALLBACK EXC_UnwindHandler( EXCEPTION_RECORD *rec, EXCEPTION_FRAME *frame,
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CONTEXT *context, EXCEPTION_FRAME **dispatcher )
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{
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if (!(rec->ExceptionFlags & (EH_UNWINDING | EH_EXIT_UNWIND)))
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return ExceptionContinueSearch;
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/* We shouldn't get here so we store faulty frame in dispatcher */
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*dispatcher = ((EXC_NESTED_FRAME*)frame)->prevFrame;
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return ExceptionCollidedUnwind;
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}
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/*******************************************************************
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* EXC_CallHandler
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*
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* Call an exception handler, setting up an exception frame to catch exceptions
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* happening during the handler execution.
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*/
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static DWORD EXC_CallHandler( PEXCEPTION_HANDLER handler, PEXCEPTION_HANDLER nested_handler,
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EXCEPTION_RECORD *record, EXCEPTION_FRAME *frame,
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CONTEXT *context, EXCEPTION_FRAME **dispatcher )
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{
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EXC_NESTED_FRAME newframe;
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DWORD ret;
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newframe.frame.Handler = nested_handler;
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newframe.prevFrame = frame;
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EXC_push_frame( &newframe.frame );
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TRACE( "calling handler at %p code=%lx flags=%lx\n",
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handler, record->ExceptionCode, record->ExceptionFlags );
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ret = handler( record, frame, context, dispatcher );
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TRACE( "handler returned %lx\n", ret );
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EXC_pop_frame( &newframe.frame );
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return ret;
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}
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/*******************************************************************
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* EXC_DefaultHandling
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*
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* Default handling for exceptions. Called when we didn't find a suitable handler.
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*/
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static void EXC_DefaultHandling( EXCEPTION_RECORD *rec, CONTEXT *context )
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{
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if ((PROCESS_Current()->flags & PDB32_DEBUGGED) &&
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(DEBUG_SendExceptionEvent( rec, FALSE ) == DBG_CONTINUE))
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return; /* continue execution */
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if (debug_hook( rec, context, FALSE ) == DBG_CONTINUE)
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return; /* continue execution */
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if (rec->ExceptionFlags & EH_STACK_INVALID)
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ERR("Exception frame is not in stack limits => unable to dispatch exception.\n");
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else if (rec->ExceptionCode == EXCEPTION_NONCONTINUABLE_EXCEPTION)
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ERR("Process attempted to continue execution after noncontinuable exception.\n");
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else
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ERR("Unhandled exception code %lx flags %lx addr %p\n",
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rec->ExceptionCode, rec->ExceptionFlags, rec->ExceptionAddress );
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TerminateProcess( GetCurrentProcess(), 1 );
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}
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/***********************************************************************
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* RtlRaiseException (NTDLL.464)
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*/
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void WINAPI REGS_FUNC(RtlRaiseException)( EXCEPTION_RECORD *rec, CONTEXT *context )
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{
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PEXCEPTION_FRAME frame, dispatch, nested_frame;
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EXCEPTION_RECORD newrec;
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DWORD res;
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TRACE( "code=%lx flags=%lx\n", rec->ExceptionCode, rec->ExceptionFlags );
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if ((PROCESS_Current()->flags & PDB32_DEBUGGED) &&
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(DEBUG_SendExceptionEvent( rec, TRUE ) == DBG_CONTINUE))
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return; /* continue execution */
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if (debug_hook( rec, context, TRUE ) == DBG_CONTINUE)
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return; /* continue execution */
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frame = NtCurrentTeb()->except;
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nested_frame = NULL;
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while (frame != (PEXCEPTION_FRAME)0xFFFFFFFF)
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{
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/* Check frame address */
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if (((void*)frame < NtCurrentTeb()->stack_low) ||
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((void*)(frame+1) > NtCurrentTeb()->stack_top) ||
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(int)frame & 3)
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{
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rec->ExceptionFlags |= EH_STACK_INVALID;
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break;
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}
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/* Call handler */
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res = EXC_CallHandler( frame->Handler, EXC_RaiseHandler, rec, frame, context, &dispatch );
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if (frame == nested_frame)
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{
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/* no longer nested */
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nested_frame = NULL;
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rec->ExceptionFlags &= ~EH_NESTED_CALL;
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}
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switch(res)
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{
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case ExceptionContinueExecution:
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if (!(rec->ExceptionFlags & EH_NONCONTINUABLE)) return;
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newrec.ExceptionCode = STATUS_NONCONTINUABLE_EXCEPTION;
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newrec.ExceptionFlags = EH_NONCONTINUABLE;
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newrec.ExceptionRecord = rec;
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newrec.NumberParameters = 0;
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RtlRaiseException( &newrec ); /* never returns */
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break;
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case ExceptionContinueSearch:
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break;
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case ExceptionNestedException:
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if (nested_frame < dispatch) nested_frame = dispatch;
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rec->ExceptionFlags |= EH_NESTED_CALL;
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break;
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default:
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newrec.ExceptionCode = STATUS_INVALID_DISPOSITION;
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newrec.ExceptionFlags = EH_NONCONTINUABLE;
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newrec.ExceptionRecord = rec;
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newrec.NumberParameters = 0;
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RtlRaiseException( &newrec ); /* never returns */
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break;
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}
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frame = frame->Prev;
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}
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EXC_DefaultHandling( rec, context );
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}
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/*******************************************************************
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* RtlUnwind (KERNEL32.590) (NTDLL.518)
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*/
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void WINAPI REGS_FUNC(RtlUnwind)( PEXCEPTION_FRAME pEndFrame, LPVOID unusedEip,
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PEXCEPTION_RECORD pRecord, DWORD returnEax,
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CONTEXT *context )
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{
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EXCEPTION_RECORD record, newrec;
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PEXCEPTION_FRAME frame, dispatch;
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EAX_reg(context) = returnEax;
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/* build an exception record, if we do not have one */
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if (!pRecord)
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{
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record.ExceptionCode = STATUS_UNWIND;
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record.ExceptionFlags = 0;
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record.ExceptionRecord = NULL;
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record.ExceptionAddress = GET_IP(context);
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record.NumberParameters = 0;
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pRecord = &record;
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}
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pRecord->ExceptionFlags |= EH_UNWINDING | (pEndFrame ? 0 : EH_EXIT_UNWIND);
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TRACE( "code=%lx flags=%lx\n", pRecord->ExceptionCode, pRecord->ExceptionFlags );
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/* get chain of exception frames */
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frame = NtCurrentTeb()->except;
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while ((frame != (PEXCEPTION_FRAME)0xffffffff) && (frame != pEndFrame))
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{
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/* Check frame address */
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if (pEndFrame && (frame > pEndFrame))
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{
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newrec.ExceptionCode = STATUS_INVALID_UNWIND_TARGET;
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newrec.ExceptionFlags = EH_NONCONTINUABLE;
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newrec.ExceptionRecord = pRecord;
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newrec.NumberParameters = 0;
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RtlRaiseException( &newrec ); /* never returns */
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}
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if (((void*)frame < NtCurrentTeb()->stack_low) ||
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((void*)(frame+1) > NtCurrentTeb()->stack_top) ||
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(int)frame & 3)
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{
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newrec.ExceptionCode = STATUS_BAD_STACK;
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newrec.ExceptionFlags = EH_NONCONTINUABLE;
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newrec.ExceptionRecord = pRecord;
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newrec.NumberParameters = 0;
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RtlRaiseException( &newrec ); /* never returns */
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}
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/* Call handler */
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switch(EXC_CallHandler( frame->Handler, EXC_UnwindHandler, pRecord,
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frame, context, &dispatch ))
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{
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case ExceptionContinueSearch:
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break;
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case ExceptionCollidedUnwind:
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frame = dispatch;
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break;
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default:
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newrec.ExceptionCode = STATUS_INVALID_DISPOSITION;
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newrec.ExceptionFlags = EH_NONCONTINUABLE;
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newrec.ExceptionRecord = pRecord;
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newrec.NumberParameters = 0;
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RtlRaiseException( &newrec ); /* never returns */
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break;
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}
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frame = EXC_pop_frame( frame );
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}
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}
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/*******************************************************************
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* NtRaiseException (NTDLL.175)
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*
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* Real prototype:
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* DWORD WINAPI NtRaiseException( EXCEPTION_RECORD *rec, CONTEXT *ctx, BOOL first );
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*/
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void WINAPI REGS_FUNC(NtRaiseException)( EXCEPTION_RECORD *rec, CONTEXT *ctx,
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BOOL first, CONTEXT *context )
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{
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REGS_FUNC(RtlRaiseException)( rec, ctx );
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*context = *ctx;
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}
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/***********************************************************************
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* RtlRaiseStatus (NTDLL.465)
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*
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* Raise an exception with ExceptionCode = status
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*/
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void WINAPI RtlRaiseStatus( NTSTATUS status )
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{
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EXCEPTION_RECORD ExceptionRec;
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ExceptionRec.ExceptionCode = status;
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ExceptionRec.ExceptionFlags = EH_NONCONTINUABLE;
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ExceptionRec.ExceptionRecord = NULL;
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ExceptionRec.NumberParameters = 0;
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RtlRaiseException( &ExceptionRec );
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}
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/***********************************************************************
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* DebugBreak (KERNEL32.181)
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*/
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void WINAPI REGS_FUNC(DebugBreak)( CONTEXT *context )
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{
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EXCEPTION_RECORD rec;
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rec.ExceptionCode = EXCEPTION_BREAKPOINT;
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rec.ExceptionFlags = EH_NONCONTINUABLE;
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rec.ExceptionRecord = NULL;
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rec.NumberParameters = 0;
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REGS_FUNC(RtlRaiseException)( &rec, context );
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}
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/***********************************************************************
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* DebugBreak16 (KERNEL.203)
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*/
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void WINAPI DebugBreak16( CONTEXT *context )
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{
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REGS_FUNC(DebugBreak)( context );
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}
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/***********************************************************************
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* EXC_SaveContext
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*
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* Set the register values from a sigcontext.
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*/
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static void EXC_SaveContext( CONTEXT *context, const SIGCONTEXT *sigcontext )
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{
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#ifdef __i386__
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EAX_reg(context) = EAX_sig(sigcontext);
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EBX_reg(context) = EBX_sig(sigcontext);
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ECX_reg(context) = ECX_sig(sigcontext);
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EDX_reg(context) = EDX_sig(sigcontext);
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ESI_reg(context) = ESI_sig(sigcontext);
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EDI_reg(context) = EDI_sig(sigcontext);
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EBP_reg(context) = EBP_sig(sigcontext);
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EFL_reg(context) = EFL_sig(sigcontext);
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EIP_reg(context) = EIP_sig(sigcontext);
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ESP_reg(context) = ESP_sig(sigcontext);
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CS_reg(context) = LOWORD(CS_sig(sigcontext));
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DS_reg(context) = LOWORD(DS_sig(sigcontext));
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ES_reg(context) = LOWORD(ES_sig(sigcontext));
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SS_reg(context) = LOWORD(SS_sig(sigcontext));
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#ifdef FS_sig
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FS_reg(context) = LOWORD(FS_sig(sigcontext));
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#else
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GET_FS( FS_reg(context) );
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FS_reg(context) &= 0xffff;
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#endif
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#ifdef GS_sig
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GS_reg(context) = LOWORD(GS_sig(sigcontext));
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#else
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GET_GS( GS_reg(context) );
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GS_reg(context) &= 0xffff;
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#endif
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if (ISV86(context)) V86BASE(context) = (DWORD)DOSMEM_MemoryBase(0);
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#endif /* __i386__ */
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}
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/***********************************************************************
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* EXC_RestoreContext
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*
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* Build a sigcontext from the register values.
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*/
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static void EXC_RestoreContext( const CONTEXT *context, SIGCONTEXT *sigcontext )
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{
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#ifdef __i386__
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EAX_sig(sigcontext) = EAX_reg(context);
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EBX_sig(sigcontext) = EBX_reg(context);
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ECX_sig(sigcontext) = ECX_reg(context);
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EDX_sig(sigcontext) = EDX_reg(context);
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ESI_sig(sigcontext) = ESI_reg(context);
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EDI_sig(sigcontext) = EDI_reg(context);
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EBP_sig(sigcontext) = EBP_reg(context);
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EFL_sig(sigcontext) = EFL_reg(context);
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EIP_sig(sigcontext) = EIP_reg(context);
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ESP_sig(sigcontext) = ESP_reg(context);
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CS_sig(sigcontext) = CS_reg(context);
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DS_sig(sigcontext) = DS_reg(context);
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ES_sig(sigcontext) = ES_reg(context);
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SS_sig(sigcontext) = SS_reg(context);
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#ifdef FS_sig
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FS_sig(sigcontext) = FS_reg(context);
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#else
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SET_FS( FS_reg(context) );
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#endif
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#ifdef GS_sig
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GS_sig(sigcontext) = GS_reg(context);
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#else
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SET_GS( GS_reg(context) );
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#endif
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#endif /* __i386__ */
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}
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/**********************************************************************
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* EXC_segv
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*
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* Handler for SIGSEGV and related errors.
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*/
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static HANDLER_DEF(EXC_segv)
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{
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EXCEPTION_RECORD rec;
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CONTEXT context;
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HANDLER_INIT();
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rec.NumberParameters = 0;
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#ifdef TRAP_sig
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switch(TRAP_sig(HANDLER_CONTEXT))
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{
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case 4: /* Overflow exception */
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rec.ExceptionCode = EXCEPTION_INT_OVERFLOW;
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break;
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case 5: /* Bound range exception */
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rec.ExceptionCode = EXCEPTION_ARRAY_BOUNDS_EXCEEDED;
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break;
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case 6: /* Invalid opcode exception */
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rec.ExceptionCode = EXCEPTION_ILLEGAL_INSTRUCTION;
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break;
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case 12: /* Stack fault */
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rec.ExceptionCode = EXCEPTION_STACK_OVERFLOW;
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break;
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case 11: /* Segment not present exception */
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case 13: /* General protection fault */
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if (INSTR_EmulateInstruction( HANDLER_CONTEXT )) return;
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rec.ExceptionCode = EXCEPTION_PRIV_INSTRUCTION;
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break;
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case 14: /* Page fault */
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#ifdef CR2_sig
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if (VIRTUAL_HandleFault( (LPVOID)CR2_sig(HANDLER_CONTEXT) )) return;
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rec.NumberParameters = 2;
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#ifdef ERROR_sig
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rec.ExceptionInformation[0] = (ERROR_sig(HANDLER_CONTEXT) & 2) != 0;
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#else
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rec.ExceptionInformation[0] = 0;
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#endif /* ERROR_sig */
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rec.ExceptionInformation[1] = CR2_sig(HANDLER_CONTEXT);
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#endif /* CR2_sig */
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rec.ExceptionCode = EXCEPTION_ACCESS_VIOLATION;
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break;
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case 17: /* Alignment check exception */
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/* FIXME: pass through exception handler first? */
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if (EFL_sig(HANDLER_CONTEXT) & 0x00040000)
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{
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/* Disable AC flag, return */
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EFL_sig(HANDLER_CONTEXT) &= ~0x00040000;
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return;
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}
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rec.ExceptionCode = EXCEPTION_DATATYPE_MISALIGNMENT;
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break;
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default:
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ERR( "Got unexpected trap %ld\n", TRAP_sig(HANDLER_CONTEXT) );
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/* fall through */
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case 2: /* NMI interrupt */
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case 7: /* Device not available exception */
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case 8: /* Double fault exception */
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case 10: /* Invalid TSS exception */
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case 15: /* Unknown exception */
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case 18: /* Machine check exception */
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case 19: /* Cache flush exception */
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rec.ExceptionCode = EXCEPTION_ILLEGAL_INSTRUCTION;
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break;
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}
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#else /* TRAP_sig */
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# ifdef __i386
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if (INSTR_EmulateInstruction( HANDLER_CONTEXT )) return;
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# endif
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rec.ExceptionCode = EXCEPTION_ILLEGAL_INSTRUCTION; /* generic error */
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#endif /* TRAP_sig */
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EXC_SaveContext( &context, HANDLER_CONTEXT );
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rec.ExceptionRecord = NULL;
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rec.ExceptionFlags = EH_NONCONTINUABLE;
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rec.ExceptionAddress = GET_IP(&context);
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REGS_FUNC(RtlRaiseException)( &rec, &context );
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EXC_RestoreContext( &context, HANDLER_CONTEXT );
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}
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/**********************************************************************
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* EXC_trap
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*
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* Handler for SIGTRAP.
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*/
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static HANDLER_DEF(EXC_trap)
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{
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EXCEPTION_RECORD rec;
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CONTEXT context;
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HANDLER_INIT();
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#ifdef TRAP_sig
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rec.ExceptionCode = (TRAP_sig(HANDLER_CONTEXT) == 1) ?
|
|
EXCEPTION_SINGLE_STEP : EXCEPTION_BREAKPOINT;
|
|
#else
|
|
rec.ExceptionCode = EXCEPTION_BREAKPOINT;
|
|
#endif /* TRAP_sig */
|
|
|
|
EXC_SaveContext( &context, HANDLER_CONTEXT );
|
|
rec.ExceptionFlags = EXCEPTION_CONTINUABLE;
|
|
rec.ExceptionRecord = NULL;
|
|
rec.ExceptionAddress = GET_IP(&context);
|
|
rec.NumberParameters = 0;
|
|
REGS_FUNC(RtlRaiseException)( &rec, &context );
|
|
EXC_RestoreContext( &context, HANDLER_CONTEXT );
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* EXC_SaveFPU
|
|
*
|
|
* Set the FPU context from a sigcontext.
|
|
*/
|
|
static void inline EXC_SaveFPU( CONTEXT *context, const SIGCONTEXT *sigcontext )
|
|
{
|
|
#ifdef __i386__
|
|
# ifdef FPU_sig
|
|
if (FPU_sig(sigcontext))
|
|
{
|
|
context->FloatSave = *FPU_sig(sigcontext);
|
|
return;
|
|
}
|
|
# endif /* FPU_sig */
|
|
# ifdef __GNUC__
|
|
__asm__ __volatile__( "fnsave %0; fwait" : "=m" (context->FloatSave) );
|
|
# endif /* __GNUC__ */
|
|
#endif /* __i386__ */
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* EXC_RestoreFPU
|
|
*
|
|
* Restore the FPU context to a sigcontext.
|
|
*/
|
|
static void inline EXC_RestoreFPU( CONTEXT *context, const SIGCONTEXT *sigcontext )
|
|
{
|
|
#ifdef __i386__
|
|
# ifdef FPU_sig
|
|
if (FPU_sig(sigcontext))
|
|
{
|
|
*FPU_sig(sigcontext) = context->FloatSave;
|
|
return;
|
|
}
|
|
# endif /* FPU_sig */
|
|
# ifdef __GNUC__
|
|
/* avoid nested exceptions */
|
|
context->FloatSave.StatusWord &= context->FloatSave.ControlWord | 0xffffff80;
|
|
__asm__ __volatile__( "frstor %0; fwait" : : "m" (context->FloatSave) );
|
|
# endif /* __GNUC__ */
|
|
#endif /* __i386__ */
|
|
}
|
|
|
|
|
|
/**********************************************************************
|
|
* EXC_GetFPUCode
|
|
*
|
|
* Get the FPU exception code from the FPU status.
|
|
*/
|
|
static inline DWORD EXC_GetFPUCode( const CONTEXT *context )
|
|
{
|
|
#ifdef __i386__
|
|
DWORD status = context->FloatSave.StatusWord;
|
|
|
|
if (status & 0x01) /* IE */
|
|
{
|
|
if (status & 0x40) /* SF */
|
|
return EXCEPTION_FLT_STACK_CHECK;
|
|
else
|
|
return EXCEPTION_FLT_INVALID_OPERATION;
|
|
}
|
|
if (status & 0x02) return EXCEPTION_FLT_DENORMAL_OPERAND; /* DE flag */
|
|
if (status & 0x04) return EXCEPTION_FLT_DIVIDE_BY_ZERO; /* ZE flag */
|
|
if (status & 0x08) return EXCEPTION_FLT_OVERFLOW; /* OE flag */
|
|
if (status & 0x10) return EXCEPTION_FLT_UNDERFLOW; /* UE flag */
|
|
if (status & 0x20) return EXCEPTION_FLT_INEXACT_RESULT; /* PE flag */
|
|
#endif /* __i386__ */
|
|
return EXCEPTION_FLT_INVALID_OPERATION; /* generic error */
|
|
}
|
|
|
|
|
|
/**********************************************************************
|
|
* EXC_fpe
|
|
*
|
|
* Handler for SIGFPE.
|
|
*/
|
|
static HANDLER_DEF(EXC_fpe)
|
|
{
|
|
EXCEPTION_RECORD rec;
|
|
CONTEXT context;
|
|
|
|
HANDLER_INIT();
|
|
|
|
EXC_SaveFPU( &context, HANDLER_CONTEXT );
|
|
|
|
#ifdef TRAP_sig
|
|
switch(TRAP_sig(HANDLER_CONTEXT))
|
|
{
|
|
case 0: /* Division by zero exception */
|
|
rec.ExceptionCode = EXCEPTION_INT_DIVIDE_BY_ZERO;
|
|
break;
|
|
case 9: /* Coprocessor segment overrun */
|
|
rec.ExceptionCode = EXCEPTION_FLT_INVALID_OPERATION;
|
|
break;
|
|
case 16: /* Floating point exception */
|
|
rec.ExceptionCode = EXC_GetFPUCode( &context );
|
|
break;
|
|
default:
|
|
ERR( "Got unexpected trap %ld\n", TRAP_sig(HANDLER_CONTEXT) );
|
|
rec.ExceptionCode = EXCEPTION_FLT_INVALID_OPERATION;
|
|
break;
|
|
}
|
|
#else /* TRAP_sig */
|
|
rec.ExceptionCode = EXC_GetFPUCode( &context );
|
|
#endif /* TRAP_sig */
|
|
|
|
EXC_SaveContext( &context, HANDLER_CONTEXT );
|
|
rec.ExceptionFlags = EH_NONCONTINUABLE;
|
|
rec.ExceptionRecord = NULL;
|
|
rec.ExceptionAddress = GET_IP(&context);
|
|
rec.NumberParameters = 0;
|
|
REGS_FUNC(RtlRaiseException)( &rec, &context );
|
|
EXC_RestoreContext( &context, HANDLER_CONTEXT );
|
|
EXC_RestoreFPU( &context, HANDLER_CONTEXT );
|
|
}
|
|
|
|
|
|
/**********************************************************************
|
|
* EXC_int
|
|
*
|
|
* Handler for SIGINT.
|
|
*/
|
|
static HANDLER_DEF(EXC_int)
|
|
{
|
|
EXCEPTION_RECORD rec;
|
|
CONTEXT context;
|
|
|
|
HANDLER_INIT();
|
|
|
|
EXC_SaveContext( &context, HANDLER_CONTEXT );
|
|
rec.ExceptionCode = CONTROL_C_EXIT;
|
|
rec.ExceptionFlags = EH_NONCONTINUABLE;
|
|
rec.ExceptionRecord = NULL;
|
|
rec.ExceptionAddress = GET_IP(&context);
|
|
rec.NumberParameters = 0;
|
|
REGS_FUNC(RtlRaiseException)( &rec, &context );
|
|
EXC_RestoreContext( &context, HANDLER_CONTEXT );
|
|
}
|
|
|
|
|
|
/**********************************************************************
|
|
* EXC_InitHandlers
|
|
*
|
|
* Initialize the signal handlers for exception handling.
|
|
*/
|
|
void EXC_InitHandlers(void)
|
|
{
|
|
SIGNAL_SetHandler( SIGINT, (void (*)())EXC_int, 1 );
|
|
SIGNAL_SetHandler( SIGFPE, (void (*)())EXC_fpe, 1 );
|
|
SIGNAL_SetHandler( SIGSEGV, (void (*)())EXC_segv, 1 );
|
|
SIGNAL_SetHandler( SIGILL, (void (*)())EXC_segv, 1 );
|
|
#ifdef SIGBUS
|
|
SIGNAL_SetHandler( SIGBUS, (void (*)())EXC_segv, 1 );
|
|
#endif
|
|
#ifdef SIGTRAP
|
|
SIGNAL_SetHandler( SIGTRAP, (void (*)())EXC_trap, 1 );
|
|
#endif
|
|
return;
|
|
}
|