LONG CALLBACK sehFilterFunction(EXCEPTION_POINTERS* exceptionPointers,Exception*& outRuntimeException)
{
// Detect a WAVM runtime exception and just pull the the Exception pointer out for the handler.
if(exceptionPointers->ExceptionRecord->ExceptionCode == EXCEPTION_WAVM_RUNTIME)
{
outRuntimeException = reinterpret_cast<Exception*>(exceptionPointers->ExceptionRecord->ExceptionInformation[0]);
}
else
{
// Interpret the cause of the exception.
Exception::Cause cause;
switch(exceptionPointers->ExceptionRecord->ExceptionCode)
{
case EXCEPTION_ACCESS_VIOLATION: cause = Exception::Cause::AccessViolation; break;
case EXCEPTION_STACK_OVERFLOW: cause = Exception::Cause::StackOverflow; break;
case EXCEPTION_INT_DIVIDE_BY_ZERO: cause = Exception::Cause::IntegerDivideByZeroOrIntegerOverflow; break;
case EXCEPTION_INT_OVERFLOW: cause = Exception::Cause::IntegerDivideByZeroOrIntegerOverflow; break;
default: cause = Exception::Cause::Unknown; break;
}
// Unwind the stack frames from the context of the exception.
auto executionContext = unwindStack(*exceptionPointers->ContextRecord);
// Describe the exception's call stack.
outRuntimeException = new Exception {cause,describeExecutionContext(executionContext)};
}
return EXCEPTION_EXECUTE_HANDLER;
}
void causeException(Exception::Cause cause)
{
auto callStack = describeExecutionContext(RuntimePlatform::captureExecutionContext());
RuntimePlatform::raiseException(new Exception {cause,callStack});
}
