1/*
2 * Copyright (c) 1998, 2017, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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23 */
24
25#ifndef CPU_SPARC_VM_JNITYPES_SPARC_HPP
26#define CPU_SPARC_VM_JNITYPES_SPARC_HPP
27
28#include "memory/allocation.hpp"
29#include "oops/oop.hpp"
30#include "prims/jni.h"
31
32// This file holds platform-dependent routines used to write primitive jni
33// types to the array of arguments passed into JavaCalls::call
34
35class JNITypes : AllStatic {
36  // These functions write a java primitive type (in native format)
37  // to a java stack slot array to be passed as an argument to JavaCalls:calls.
38  // I.e., they are functionally 'push' operations if they have a 'pos'
39  // formal parameter.  Note that jlong's and jdouble's are written
40  // _in reverse_ of the order in which they appear in the interpreter
41  // stack.  This is because call stubs (see stubGenerator_sparc.cpp)
42  // reverse the argument list constructed by JavaCallArguments (see
43  // javaCalls.hpp).
44
45private:
46  // Helper routines.
47  static inline void    put_int2 (jint *from, jint *to)           { to[0] = from[0]; to[1] = from[1]; }
48  static inline void    put_int2 (jint *from, jint *to, int& pos) { put_int2 (from, (jint *)((intptr_t *)to + pos)); pos += 2; }
49  static inline void    put_int2r(jint *from, jint *to)           { to[0] = from[1]; to[1] = from[0]; }
50  static inline void    put_int2r(jint *from, jint *to, int& pos) { put_int2r(from, (jint *)((intptr_t *)to + pos)); pos += 2; }
51
52public:
53  // Ints are stored in native format in one JavaCallArgument slot at *to.
54  static inline void    put_int(jint  from, intptr_t *to)               { *(jint *)(to +   0  ) =  from; }
55  static inline void    put_int(jint  from, intptr_t *to, int& pos)     { *(jint *)(to + pos++) =  from; }
56  static inline void    put_int(jint *from, intptr_t *to, int& pos)     { *(jint *)(to + pos++) = *from; }
57
58  // Longs are stored in native format in one JavaCallArgument slot at *(to+1).
59  static inline void    put_long(jlong  from, intptr_t *to)             { *(jlong *)(to + 1 +   0) =  from; }
60  static inline void    put_long(jlong  from, intptr_t *to, int& pos)   { *(jlong *)(to + 1 + pos) =  from; pos += 2; }
61  static inline void    put_long(jlong *from, intptr_t *to, int& pos)   { *(jlong *)(to + 1 + pos) = *from; pos += 2; }
62
63  // Oops are stored in native format in one JavaCallArgument slot at *to.
64  static inline void    put_obj(oop  from, intptr_t *to)                { *(oop *)(to +   0  ) =  from; }
65  static inline void    put_obj(oop  from, intptr_t *to, int& pos)      { *(oop *)(to + pos++) =  from; }
66  static inline void    put_obj(oop *from, intptr_t *to, int& pos)      { *(oop *)(to + pos++) = *from; }
67
68  // Floats are stored in native format in one JavaCallArgument slot at *to.
69  static inline void    put_float(jfloat  from, intptr_t *to)           { *(jfloat *)(to +   0  ) =  from; }
70  static inline void    put_float(jfloat  from, intptr_t *to, int& pos) { *(jfloat *)(to + pos++) =  from; }
71  static inline void    put_float(jfloat *from, intptr_t *to, int& pos) { *(jfloat *)(to + pos++) = *from; }
72
73  // Doubles are stored in native word format in one JavaCallArgument slot at *(to+1).
74  static inline void    put_double(jdouble  from, intptr_t *to)           { *(jdouble *)(to + 1 +   0) =  from; }
75  static inline void    put_double(jdouble  from, intptr_t *to, int& pos) { *(jdouble *)(to + 1 + pos) =  from; pos += 2; }
76  static inline void    put_double(jdouble *from, intptr_t *to, int& pos) { *(jdouble *)(to + 1 + pos) = *from; pos += 2; }
77
78  // The get_xxx routines, on the other hand, actually _do_ fetch
79  // java primitive types from the interpreter stack.
80  static inline jint    get_int(intptr_t *from)         { return *(jint *)from; }
81
82  static inline jlong   get_long(intptr_t *from)        { return *(jlong *)from; }
83
84  static inline oop     get_obj(intptr_t *from)         { return *(oop *)from; }
85  static inline jfloat  get_float(intptr_t *from)       { return *(jfloat *)from; }
86
87  static inline jdouble get_double(intptr_t *from)      { return *(jdouble *)from; }
88
89};
90
91#endif // CPU_SPARC_VM_JNITYPES_SPARC_HPP
92