1 files changed, 42 insertions, 0 deletions

diff --git a/libunwindstack/include/unwindstack/Error.h b/libunwindstack/include/unwindstack/Error.h
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index 000000000..6ed0e0fb0
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+++ b/libunwindstack/include/unwindstack/Error.h
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+/*
+ * Copyright (C) 2018 The Android Open Source Project
+ *
+ * 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.
+ */
+
+#ifndef _LIBUNWINDSTACK_ERROR_H
+#define _LIBUNWINDSTACK_ERROR_H
+
+#include <stdint.h>
+
+namespace unwindstack {
+
+enum ErrorCode : uint8_t {
+  ERROR_NONE,                 // No error.
+  ERROR_MEMORY_INVALID,       // Memory read failed.
+  ERROR_UNWIND_INFO,          // Unable to use unwind information to unwind.
+  ERROR_UNSUPPORTED,          // Encountered unsupported feature.
+  ERROR_INVALID_MAP,          // Unwind in an invalid map.
+  ERROR_MAX_FRAMES_EXCEEDED,  // The number of frames exceed the total allowed.
+  ERROR_REPEATED_FRAME,       // The last frame has the same pc/sp as the next.
+};
+
+struct ErrorData {
+  ErrorCode code;
+  uint64_t address;  // Only valid when code is ERROR_MEMORY_INVALID.
+                     // Indicates the failing address.
+};
+
+}  // namespace unwindstack
+
+#endif  // _LIBUNWINDSTACK_ERROR_H