C++ (Cpp) win32_handle_stack_overflowの例

コード例 #1

/*
 * Unhandled Exception Filter
 * Top-level per-process exception handler.
 */
LONG CALLBACK seh_vectored_exception_handler(EXCEPTION_POINTERS* ep)
{
	EXCEPTION_RECORD* er;
	CONTEXT* ctx;
	LONG res;
	MonoJitTlsData *jit_tls = mono_native_tls_get_value (mono_jit_tls_id);

	/* If the thread is not managed by the runtime return early */
	if (!jit_tls)
		return EXCEPTION_CONTINUE_SEARCH;

	jit_tls->mono_win_chained_exception_needs_run = FALSE;
	res = EXCEPTION_CONTINUE_EXECUTION;

	er = ep->ExceptionRecord;
	ctx = ep->ContextRecord;

	switch (er->ExceptionCode) {
	case EXCEPTION_STACK_OVERFLOW:
		win32_handle_stack_overflow (ep, ctx);
		break;
	case EXCEPTION_ACCESS_VIOLATION:
		W32_SEH_HANDLE_EX(segv);
		break;
	case EXCEPTION_ILLEGAL_INSTRUCTION:
		W32_SEH_HANDLE_EX(ill);
		break;
	case EXCEPTION_INT_DIVIDE_BY_ZERO:
	case EXCEPTION_INT_OVERFLOW:
	case EXCEPTION_FLT_DIVIDE_BY_ZERO:
	case EXCEPTION_FLT_OVERFLOW:
	case EXCEPTION_FLT_UNDERFLOW:
	case EXCEPTION_FLT_INEXACT_RESULT:
		W32_SEH_HANDLE_EX(fpe);
		break;
	default:
		jit_tls->mono_win_chained_exception_needs_run = TRUE;
		break;
	}

	if (jit_tls->mono_win_chained_exception_needs_run) {
		/* Don't copy context back if we chained exception
		* as the handler may have modfied the EXCEPTION_POINTERS
		* directly. We don't pass sigcontext to chained handlers.
		* Return continue search so the UnhandledExceptionFilter
		* can correctly chain the exception.
		*/
		res = EXCEPTION_CONTINUE_SEARCH;
	}

	return res;
}

コード例 #2

ファイル: exceptions-x86.c プロジェクト: efcastrillon/mono

/*
 * Unhandled Exception Filter
 * Top-level per-process exception handler.
 */
LONG CALLBACK seh_vectored_exception_handler(EXCEPTION_POINTERS* ep)
{
	EXCEPTION_RECORD* er;
	CONTEXT* ctx;
	struct sigcontext* sctx;
	LONG res;

	mono_win_chained_exception_needs_run = FALSE;
	res = EXCEPTION_CONTINUE_EXECUTION;

	er = ep->ExceptionRecord;
	ctx = ep->ContextRecord;
	sctx = g_malloc(sizeof(struct sigcontext));

	/* Copy Win32 context to UNIX style context */
	sctx->eax = ctx->Eax;
	sctx->ebx = ctx->Ebx;
	sctx->ecx = ctx->Ecx;
	sctx->edx = ctx->Edx;
	sctx->ebp = ctx->Ebp;
	sctx->esp = ctx->Esp;
	sctx->esi = ctx->Esi;
	sctx->edi = ctx->Edi;
	sctx->eip = ctx->Eip;

	switch (er->ExceptionCode) {
	case EXCEPTION_STACK_OVERFLOW:
		win32_handle_stack_overflow (ep, sctx);
		break;
	case EXCEPTION_ACCESS_VIOLATION:
		W32_SEH_HANDLE_EX(segv);
		break;
	case EXCEPTION_ILLEGAL_INSTRUCTION:
		W32_SEH_HANDLE_EX(ill);
		break;
	case EXCEPTION_INT_DIVIDE_BY_ZERO:
	case EXCEPTION_INT_OVERFLOW:
	case EXCEPTION_FLT_DIVIDE_BY_ZERO:
	case EXCEPTION_FLT_OVERFLOW:
	case EXCEPTION_FLT_UNDERFLOW:
	case EXCEPTION_FLT_INEXACT_RESULT:
		W32_SEH_HANDLE_EX(fpe);
		break;
	default:
		break;
	}

	if (mono_win_chained_exception_needs_run) {
		/* Don't copy context back if we chained exception
		* as the handler may have modfied the EXCEPTION_POINTERS
		* directly. We don't pass sigcontext to chained handlers.
		* Return continue search so the UnhandledExceptionFilter
		* can correctly chain the exception.
		*/
		res = EXCEPTION_CONTINUE_SEARCH;
	} else {
		/* Copy context back */
		ctx->Eax = sctx->eax;
		ctx->Ebx = sctx->ebx;
		ctx->Ecx = sctx->ecx;
		ctx->Edx = sctx->edx;
		ctx->Ebp = sctx->ebp;
		ctx->Esp = sctx->esp;
		ctx->Esi = sctx->esi;
		ctx->Edi = sctx->edi;
		ctx->Eip = sctx->eip;
	}

	/* TODO: Find right place to free this in stack overflow case */
	if (er->ExceptionCode != EXCEPTION_STACK_OVERFLOW)
		g_free (sctx);

	return res;
}

コード例 #3

ファイル: exceptions-x86.c プロジェクト: Sciumo/mono

/*
 * Unhandled Exception Filter
 * Top-level per-process exception handler.
 */
LONG CALLBACK seh_handler(EXCEPTION_POINTERS* ep)
{
	EXCEPTION_RECORD* er;
	CONTEXT* ctx;
	struct sigcontext* sctx;
	LONG res;

	mono_win_chained_exception_filter_didrun = FALSE;
	res = EXCEPTION_CONTINUE_EXECUTION;

	er = ep->ExceptionRecord;
	ctx = ep->ContextRecord;
	sctx = g_malloc(sizeof(struct sigcontext));

	/* Copy Win32 context to UNIX style context */
	sctx->eax = ctx->Eax;
	sctx->ebx = ctx->Ebx;
	sctx->ecx = ctx->Ecx;
	sctx->edx = ctx->Edx;
	sctx->ebp = ctx->Ebp;
	sctx->esp = ctx->Esp;
	sctx->esi = ctx->Esi;
	sctx->edi = ctx->Edi;
	sctx->eip = ctx->Eip;

	switch (er->ExceptionCode) {
	case EXCEPTION_STACK_OVERFLOW:
		win32_handle_stack_overflow (ep, sctx);
		break;
	case EXCEPTION_ACCESS_VIOLATION:
		W32_SEH_HANDLE_EX(segv);
		break;
	case EXCEPTION_ILLEGAL_INSTRUCTION:
		W32_SEH_HANDLE_EX(ill);
		break;
	case EXCEPTION_INT_DIVIDE_BY_ZERO:
	case EXCEPTION_INT_OVERFLOW:
	case EXCEPTION_FLT_DIVIDE_BY_ZERO:
	case EXCEPTION_FLT_OVERFLOW:
	case EXCEPTION_FLT_UNDERFLOW:
	case EXCEPTION_FLT_INEXACT_RESULT:
		W32_SEH_HANDLE_EX(fpe);
		break;
	default:
		break;
	}

	/* Copy context back */
	ctx->Eax = sctx->eax;
	ctx->Ebx = sctx->ebx;
	ctx->Ecx = sctx->ecx;
	ctx->Edx = sctx->edx;
	ctx->Ebp = sctx->ebp;
	ctx->Esp = sctx->esp;
	ctx->Esi = sctx->esi;
	ctx->Edi = sctx->edi;
	ctx->Eip = sctx->eip;

	g_free (sctx);

	if (mono_win_chained_exception_filter_didrun)
		res = mono_win_chained_exception_filter_result;

	return res;
}