Add stub exception handler backend for linux

src/xenia/base/exception_handler_linux.cc

@@ -0,0 +1,36 @@
+/**
+ ******************************************************************************
+ * Xenia : Xbox 360 Emulator Research Project                                 *
+ ******************************************************************************
+ * Copyright 2015 Ben Vanik. All rights reserved.                             *
+ * Released under the BSD license - see LICENSE in the root for more details. *
+ ******************************************************************************
+ */
+
+#include "xenia/base/exception_handler.h"
+
+#include "xenia/base/assert.h"
+#include "xenia/base/math.h"
+#include "xenia/base/platform_linux.h"
+
+namespace xe {
+
+// This can be as large as needed, but isn't often needed.
+// As we will be sometimes firing many exceptions we want to avoid having to
+// scan the table too much or invoke many custom handlers.
+constexpr size_t kMaxHandlerCount = 8;
+
+// All custom handlers, left-aligned and null terminated.
+// Executed in order.
+std::pair<ExceptionHandler::Handler, void*> handlers_[kMaxHandlerCount];
+
+
+void ExceptionHandler::Install(Handler fn, void* data) {
+  //TODO(dougvj) stub
+}
+
+void ExceptionHandler::Uninstall(Handler fn, void* data) {
+  //TODO(dougvj) stub
+}
+
+}  // namespace xe