1 files changed, 101 insertions, 0 deletions
diff --git a/utils/ethosu_logd/dev_mem.hpp b/utils/ethosu_logd/dev_mem.hpp
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+++ b/utils/ethosu_logd/dev_mem.hpp
@@ -0,0 +1,101 @@
+/*
+ * Copyright (c) 2021 Arm Limited. All rights reserved.
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * 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
+ *
+ * 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 DEV_MEM_HPP
+#define DEV_MEM_HPP
+
+#include <exception>
+#include <string>
+
+namespace EthosU {
+namespace DevMem {
+
+/****************************************************************************
+ * Exception
+ ****************************************************************************/
+
+class Exception : public std::exception {
+public:
+    Exception(const char *msg);
+    Exception(const std::string &msg);
+    virtual ~Exception() throw();
+    virtual const char *what() const throw();
+
+private:
+    std::string msg;
+};
+
+/****************************************************************************
+ * DevMem
+ ****************************************************************************/
+
+class DevMem {
+public:
+    DevMem(uintptr_t address, size_t size);
+    virtual ~DevMem();
+
+    void read(char *dst, size_t length, size_t offset);
+
+    template <typename T>
+    void read(T &dst, size_t offset) {
+        read(reinterpret_cast<char *>(&dst), sizeof(dst), offset);
+    }
+
+    void write(char *src, size_t length, size_t offset);
+
+    template <typename T>
+    void write(T &src, size_t offset) {
+        write(reinterpret_cast<char *>(&src), sizeof(src), offset);
+    }
+
+private:
+    char *base;
+    const uintptr_t pageMask;
+    const size_t pageOffset;
+    const size_t size;
+};
+
+/****************************************************************************
+ * Log
+ ****************************************************************************/
+
+class Log : public DevMem {
+public:
+    Log(uintptr_t address, size_t size = LOG_SIZE_MAX);
+
+    void clear();
+    void print();
+
+private:
+    struct LogHeader {
+        uint32_t size;
+        uint32_t read;
+        uint32_t pad[6];
+        uint32_t write;
+    };
+
+    static const size_t LOG_SIZE_MIN = 1024;
+    static const size_t LOG_SIZE_MAX = 1024 * 1024;
+
+    static uintptr_t getAddress();
+};
+
+} // namespace DevMem
+} // namespace EthosU
+
+#endif /* DEV_MEM_HPP */