Merge pull request MobiVM#715 from fgnm/master

Add support for putDouble and getDouble from Unsafe.

compiler/rt/libcore/libdvm/src/main/java/sun/misc/Unsafe.java

@@ -260,6 +260,15 @@ public native void putObjectVolatile(Object obj, long offset,
      */
     public native byte getByte(Object obj, long offset);
 
+    /**
+     * Gets a <code>double</code> field from the given object.
+     *
+     * @param obj non-null; object containing the field
+     * @param offset offset to the field within <code>obj</code>
+     * @return the retrieved value
+     */
+    public native double getDouble(Object obj, long offset);
+
     /**
      * Stores an <code>int</code> field into the given object.
      *
@@ -287,6 +296,15 @@ public native void putObjectVolatile(Object obj, long offset,
      */
     public native void putByte(Object obj, long offset, byte newValue);
 
+    /**
+     * Stores a <code>double</code> field into the given object.
+     *
+     * @param obj non-null; object containing the field
+     * @param offset offset to the field within <code>obj</code>
+     * @param newValue the value to store
+     */
+    public native void putDouble(Object obj, long offset, double newValue);
+
     /**
      * Gets an <code>float</code> field from the given object.
      *

compiler/vm/rt/robovm/sun_misc_Unsafe.c

@@ -110,6 +110,12 @@ jbyte Java_sun_misc_Unsafe_getByte(Env* env, Object* unsafe, Object* obj, jlong
     return *address;
 }
 
+jdouble Java_sun_misc_Unsafe_getDouble(Env* env, Object* unsafe, Object* obj, jlong offset) {
+    if (!checkNull(env, obj)) return 0;
+    jdouble* address = (jdouble*) getFieldAddress(obj, offset);
+    return *address;
+}
+
 jint Java_sun_misc_Unsafe_getIntVolatile(Env* env, Object* unsafe, Object* obj, jlong offset) {
     if (!checkNull(env, obj)) return 0;
     jint* address = (jint*) getFieldAddress(obj, offset);
@@ -164,6 +170,12 @@ void Java_sun_misc_Unsafe_putByte(Env* env, Object* unsafe, Object* obj, jlong o
     *address = newValue;
 }
 
+void Java_sun_misc_Unsafe_putDouble(Env* env, Object* unsafe, Object* obj, jlong offset, jdouble newValue) {
+    if (!checkNull(env, obj)) return;
+    jdouble* address = (jdouble*) getFieldAddress(obj, offset);
+    *address = newValue;
+}
+
 void Java_sun_misc_Unsafe_putIntVolatile(Env* env, Object* unsafe, Object* obj, jlong offset, jint newValue) {
     if (!checkNull(env, obj)) return;
     jint* address = (jint*) getFieldAddress(obj, offset);