Add exception_behaviors and its test

util/mach/exception_behaviors.cc

Index: util/mach/exception_behaviors.cc
diff --git a/util/mach/exception_behaviors.cc b/util/mach/exception_behaviors.cc
new file mode 100644
index 0000000000000000000000000000000000000000..eb2a80caff9dc99596a13d3e8f43c4bb0e1944fa
--- /dev/null
+++ b/util/mach/exception_behaviors.cc
@@ -0,0 +1,39 @@
+// Copyright 2014 The Crashpad Authors. All rights reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#include "util/mach/exception_behaviors.h"
+
+namespace crashpad {
+
+bool ExceptionBehaviorHasState(exception_behavior_t behavior) {
+  const exception_behavior_t basic_behavior = ExceptionBehaviorBasic(behavior);
+  return basic_behavior == EXCEPTION_STATE ||
+         basic_behavior == EXCEPTION_STATE_IDENTITY;
+}
+
+bool ExceptionBehaviorHasIdentity(exception_behavior_t behavior) {
+  const exception_behavior_t basic_behavior = ExceptionBehaviorBasic(behavior);
+  return basic_behavior == EXCEPTION_DEFAULT ||
+         basic_behavior == EXCEPTION_STATE_IDENTITY;
+}
+
+bool ExceptionBehaviorHasMachExceptionCodes(exception_behavior_t behavior) {
+  return (behavior & MACH_EXCEPTION_CODES) != 0;
+}
+
+exception_behavior_t ExceptionBehaviorBasic(exception_behavior_t behavior) {
+  return behavior & ~MACH_EXCEPTION_CODES;
+}
+
+}  // namespace crashpad