8187443: Forest Consolidation: Move files to unified layout

Reviewed-by: darcy, ihse

src/java.base/share/native/libjimage/endian.hpp

@@ -0,0 +1,131 @@
+/*
+ * Copyright (c) 2015, 2016, Oracle and/or its affiliates. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ *   - Redistributions of source code must retain the above copyright
+ *     notice, this list of conditions and the following disclaimer.
+ *
+ *   - Redistributions in binary form must reproduce the above copyright
+ *     notice, this list of conditions and the following disclaimer in the
+ *     documentation and/or other materials provided with the distribution.
+ *
+ *   - Neither the name of Oracle nor the names of its
+ *     contributors may be used to endorse or promote products derived
+ *     from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
+ * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
+ * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+ * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+ * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef LIBJIMAGE_ENDIAN_HPP
+#define LIBJIMAGE_ENDIAN_HPP
+
+#include "inttypes.hpp"
+
+// Selectable endian handling. Endian handlers are used when accessing values
+// that are of unknown (until runtime) endian.  The only requirement of the values
+// accessed are that they are aligned to proper size boundaries (no misalignment.)
+// To select an endian handler, one should call Endian::get_handler(big_endian);
+// Where big_endian is true if big endian is required and false otherwise.  The
+// native endian handler can be fetched with Endian::get_native_handler();
+// To retrieve a value using the approprate endian, use one of the overloaded
+// calls to get. To set a value, then use one of the overloaded set calls.
+// Ex.
+//          s4 value; // Imported value;
+//          ...
+//          Endian* endian = Endian::get_handler(true);  // Use big endian
+//          s4 corrected = endian->get(value);
+//          endian->set(value, 1);
+//
+class Endian {
+public:
+    virtual u2 get(u2 x) = 0;
+    virtual u4 get(u4 x) = 0;
+    virtual u8 get(u8 x) = 0;
+    virtual s2 get(s2 x) = 0;
+    virtual s4 get(s4 x) = 0;
+    virtual s8 get(s8 x) = 0;
+
+    virtual void set(u2& x, u2 y) = 0;
+    virtual void set(u4& x, u4 y) = 0;
+    virtual void set(u8& x, u8 y) = 0;
+    virtual void set(s2& x, s2 y) = 0;
+    virtual void set(s4& x, s4 y) = 0;
+    virtual void set(s8& x, s8 y) = 0;
+
+    // Quick little endian test.
+    static bool is_little_endian() { u4 x = 1; return *(u1 *)&x != 0; }
+
+    // Quick big endian test.
+    static bool is_big_endian() { return !is_little_endian(); }
+
+    // Select an appropriate endian handler.
+    static Endian* get_handler(bool big_endian);
+
+    // Return the native endian handler.
+    static Endian* get_native_handler();
+
+    // get platform u2 from Java Big endian
+    static u2 get_java(u1* x);
+    // set platform u2 to Java Big endian
+    static void set_java(u1* p, u2 x);
+};
+
+// Normal endian handling.
+class NativeEndian : public Endian {
+private:
+    static NativeEndian _native;
+
+public:
+    u2 get(u2 x);
+    u4 get(u4 x);
+    u8 get(u8 x);
+    s2 get(s2 x);
+    s4 get(s4 x);
+    s8 get(s8 x);
+
+    void set(u2& x, u2 y);
+    void set(u4& x, u4 y);
+    void set(u8& x, u8 y);
+    void set(s2& x, s2 y);
+    void set(s4& x, s4 y);
+    void set(s8& x, s8 y);
+
+    static Endian* get_native() { return &_native; }
+};
+
+// Swapping endian handling.
+class SwappingEndian : public Endian {
+private:
+    static SwappingEndian _swapping;
+
+public:
+    u2 get(u2 x);
+    u4 get(u4 x);
+    u8 get(u8 x);
+    s2 get(s2 x);
+    s4 get(s4 x);
+    s8 get(s8 x);
+
+    void set(u2& x, u2 y);
+    void set(u4& x, u4 y);
+    void set(u8& x, u8 y);
+    void set(s2& x, s2 y);
+    void set(s4& x, s4 y);
+    void set(s8& x, s8 y);
+
+    static Endian* get_swapping() { return &_swapping; }
+};
+#endif // LIBJIMAGE_ENDIAN_HPP