--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/src/hotspot/cpu/zero/jniTypes_zero.hpp Tue Sep 12 19:03:39 2017 +0200
@@ -0,0 +1,117 @@
+/*
+ * Copyright (c) 1998, 2010, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ *
+ */
+
+#ifndef CPU_ZERO_VM_JNITYPES_ZERO_HPP
+#define CPU_ZERO_VM_JNITYPES_ZERO_HPP
+
+#include "memory/allocation.hpp"
+#include "oops/oop.hpp"
+#include "prims/jni.h"
+
+// This file holds platform-dependent routines used to write primitive jni
+// types to the array of arguments passed into JavaCalls::call
+
+class JNITypes : AllStatic {
+ // These functions write a java primitive type (in native format)
+ // to a java stack slot array to be passed as an argument to JavaCalls:calls.
+ // I.e., they are functionally 'push' operations if they have a 'pos'
+ // formal parameter. Note that jlong's and jdouble's are written
+ // _in reverse_ of the order in which they appear in the interpreter
+ // stack. This is because call stubs (see stubGenerator_zero.cpp)
+ // reverse the argument list constructed by JavaCallArguments (see
+ // javaCalls.hpp).
+
+private:
+ // Helper routines.
+ static inline void put_int2 (jint *from, jint *to) { to[0] = from[0]; to[1] = from[1]; }
+ static inline void put_int2 (jint *from, jint *to, int& pos) { put_int2 (from, (jint *)((intptr_t *)to + pos)); pos += 2; }
+ static inline void put_int2r(jint *from, jint *to) { to[0] = from[1]; to[1] = from[0]; }
+ static inline void put_int2r(jint *from, jint *to, int& pos) { put_int2r(from, (jint *)((intptr_t *)to + pos)); pos += 2; }
+
+public:
+ // Ints are stored in native format in one JavaCallArgument slot at *to.
+ static inline void put_int(jint from, intptr_t *to) { *(jint *)(to + 0 ) = from; }
+ static inline void put_int(jint from, intptr_t *to, int& pos) { *(jint *)(to + pos++) = from; }
+ static inline void put_int(jint *from, intptr_t *to, int& pos) { *(jint *)(to + pos++) = *from; }
+
+#ifdef _LP64
+ // Longs are stored in native format in one JavaCallArgument slot at *(to+1).
+ static inline void put_long(jlong from, intptr_t *to) { *(jlong *)(to + 1 + 0) = from; }
+ static inline void put_long(jlong from, intptr_t *to, int& pos) { *(jlong *)(to + 1 + pos) = from; pos += 2; }
+ static inline void put_long(jlong *from, intptr_t *to, int& pos) { *(jlong *)(to + 1 + pos) = *from; pos += 2; }
+#else
+ // Longs are stored in reversed native word format in two JavaCallArgument slots at *to.
+ // The high half is in *(to+1) and the low half in *to.
+ static inline void put_long(jlong from, intptr_t *to) { put_int2r((jint *)&from, (jint *)to); }
+ static inline void put_long(jlong from, intptr_t *to, int& pos) { put_int2r((jint *)&from, (jint *)to, pos); }
+ static inline void put_long(jlong *from, intptr_t *to, int& pos) { put_int2r((jint *) from, (jint *)to, pos); }
+#endif
+
+ // Oops are stored in native format in one JavaCallArgument slot at *to.
+ static inline void put_obj(oop from, intptr_t *to) { *(oop *)(to + 0 ) = from; }
+ static inline void put_obj(oop from, intptr_t *to, int& pos) { *(oop *)(to + pos++) = from; }
+ static inline void put_obj(oop *from, intptr_t *to, int& pos) { *(oop *)(to + pos++) = *from; }
+
+ // Floats are stored in native format in one JavaCallArgument slot at *to.
+ static inline void put_float(jfloat from, intptr_t *to) { *(jfloat *)(to + 0 ) = from; }
+ static inline void put_float(jfloat from, intptr_t *to, int& pos) { *(jfloat *)(to + pos++) = from; }
+ static inline void put_float(jfloat *from, intptr_t *to, int& pos) { *(jfloat *)(to + pos++) = *from; }
+
+#ifdef _LP64
+ // Doubles are stored in native word format in one JavaCallArgument slot at *(to+1).
+ static inline void put_double(jdouble from, intptr_t *to) { *(jdouble *)(to + 1 + 0) = from; }
+ static inline void put_double(jdouble from, intptr_t *to, int& pos) { *(jdouble *)(to + 1 + pos) = from; pos += 2; }
+ static inline void put_double(jdouble *from, intptr_t *to, int& pos) { *(jdouble *)(to + 1 + pos) = *from; pos += 2; }
+#else
+ // Doubles are stored in reversed native word format in two JavaCallArgument slots at *to.
+ static inline void put_double(jdouble from, intptr_t *to) { put_int2r((jint *)&from, (jint *)to); }
+ static inline void put_double(jdouble from, intptr_t *to, int& pos) { put_int2r((jint *)&from, (jint *)to, pos); }
+ static inline void put_double(jdouble *from, intptr_t *to, int& pos) { put_int2r((jint *) from, (jint *)to, pos); }
+#endif
+
+ // The get_xxx routines, on the other hand, actually _do_ fetch
+ // java primitive types from the interpreter stack.
+ static inline jint get_int(intptr_t *from) { return *(jint *)from; }
+
+#ifdef _LP64
+ static inline jlong get_long(intptr_t *from) { return *(jlong *)from; }
+#else
+ static inline jlong get_long(intptr_t *from) { return ((jlong)(*( signed int *)((jint *)from )) << 32) |
+ ((jlong)(*(unsigned int *)((jint *)from + 1)) << 0); }
+#endif
+
+ static inline oop get_obj(intptr_t *from) { return *(oop *)from; }
+ static inline jfloat get_float(intptr_t *from) { return *(jfloat *)from; }
+
+#ifdef _LP64
+ static inline jdouble get_double(intptr_t *from) { return *(jdouble *)from; }
+#else
+ static inline jdouble get_double(intptr_t *from) { jlong jl = ((jlong)(*( signed int *)((jint *)from )) << 32) |
+ ((jlong)(*(unsigned int *)((jint *)from + 1)) << 0);
+ return *(jdouble *)&jl; }
+#endif
+
+};
+
+#endif // CPU_ZERO_VM_JNITYPES_ZERO_HPP