1 /*
2 * Copyright (c) 2001, 2014, 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.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 *
23 */
24
25 #include "precompiled.hpp"
26 #include "runtime/stackValueCollection.hpp"
27 #ifdef TARGET_ARCH_x86
28 # include "jniTypes_x86.hpp"
29 #endif
30 #ifdef TARGET_ARCH_sparc
31 # include "jniTypes_sparc.hpp"
32 #endif
33 #ifdef TARGET_ARCH_zero
34 # include "jniTypes_zero.hpp"
35 #endif
36 #ifdef TARGET_ARCH_arm
37 # include "jniTypes_arm.hpp"
38 #endif
39 #ifdef TARGET_ARCH_ppc
40 # include "jniTypes_ppc.hpp"
41 #endif
42
43 PRAGMA_FORMAT_MUTE_WARNINGS_FOR_GCC
44
45 jint StackValueCollection::int_at(int slot) const {
46 intptr_t val = at(slot)->get_int();
47 jint ival = *((jint*) (&val));
48 return ival;
49 }
50
51 jlong StackValueCollection::long_at(int slot) const {
52 #ifdef _LP64
53 return at(slot+1)->get_int();
54 #else
55 union {
56 jlong jl;
57 jint array[2];
58 } value;
59 // Interpreter stack is reversed in memory:
60 // low memory location is in higher java local slot.
61 value.array[0] = at(slot+1)->get_int();
62 value.array[1] = at(slot )->get_int();
63 return value.jl;
64 #endif
65 }
66
67 Handle StackValueCollection::obj_at(int slot) const {
68 return at(slot)->get_obj();
69 }
70
71 jfloat StackValueCollection::float_at(int slot) const {
72 intptr_t res = at(slot)->get_int();
73 return *((jfloat*) (&res));
74 }
75
76 jdouble StackValueCollection::double_at(int slot) const {
77 #ifdef _LP64
78 intptr_t res = at(slot+1)->get_int();
79 return *((jdouble*) (&res));
80 #else
81 union {
82 jdouble jd;
83 jint array[2];
84 } value;
85 // Interpreter stack is reversed in memory:
86 // low memory location is in higher java local slot.
87 value.array[0] = at(slot+1)->get_int();
88 value.array[1] = at(slot )->get_int();
89 return value.jd;
90 #endif
91 }
92
93 void StackValueCollection::set_int_at(int slot, jint value) {
94 intptr_t val;
95 *((jint*) (&val)) = value;
96 at(slot)->set_int(val);
97 }
98
99 void StackValueCollection::set_long_at(int slot, jlong value) {
100 #ifdef _LP64
101 at(slot+1)->set_int(value);
102 #else
103 union {
104 jlong jl;
105 jint array[2];
106 } x;
107 // Interpreter stack is reversed in memory:
108 // low memory location is in higher java local slot.
109 x.jl = value;
110 at(slot+1)->set_int(x.array[0]);
111 at(slot+0)->set_int(x.array[1]);
112 #endif
113 }
114
115 void StackValueCollection::set_obj_at(int slot, Handle value) {
116 at(slot)->set_obj(value);
117 }
118
119 void StackValueCollection::set_float_at(int slot, jfloat value) {
120 #ifdef _LP64
121 union {
122 intptr_t jd;
123 jint array[2];
124 } val;
125 // Interpreter stores 32 bit floats in first half of 64 bit word.
126 val.array[0] = *(jint*)(&value);
127 val.array[1] = 0;
128 at(slot)->set_int(val.jd);
129 #else
130 at(slot)->set_int(*(jint*)(&value));
131 #endif
132 }
133
134 void StackValueCollection::set_double_at(int slot, jdouble value) {
135 #ifdef _LP64
136 at(slot+1)->set_int(*(intptr_t*)(&value));
137 #else
138 union {
139 jdouble jd;
140 jint array[2];
141 } x;
142 // Interpreter stack is reversed in memory:
143 // low memory location is in higher java local slot.
144 x.jd = value;
145 at(slot+1)->set_int(x.array[0]);
146 at(slot+0)->set_int(x.array[1]);
147 #endif
148 }
149
150 #ifndef PRODUCT
151 void StackValueCollection::print() {
152 for(int index = 0; index < size(); index++) {
153 tty->print("\t %2d ", index);
154 at(index)->print_on(tty);
155 if( at(index )->type() == T_INT &&
156 index+1 < size() &&
157 at(index+1)->type() == T_INT ) {
158 tty->print(" " INT64_FORMAT " (long)", long_at(index));
159 tty->cr();
160 tty->print("\t %.15e (double)", double_at(index));
161 tty->print(" " PTR64_FORMAT " (longhex)", long_at(index));
162 }
163 tty->cr();
164 }
165 }
166 #endif