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_aarch64
31 # include "jniTypes_aarch64.hpp"
32 #endif
33 #ifdef TARGET_ARCH_sparc
34 # include "jniTypes_sparc.hpp"
35 #endif
36 #ifdef TARGET_ARCH_zero
37 # include "jniTypes_zero.hpp"
38 #endif
39 #ifdef TARGET_ARCH_arm
40 # include "jniTypes_arm.hpp"
41 #endif
42 #ifdef TARGET_ARCH_ppc
43 # include "jniTypes_ppc.hpp"
44 #endif
45
46 PRAGMA_FORMAT_MUTE_WARNINGS_FOR_GCC
47
48 jint StackValueCollection::int_at(int slot) const {
49 intptr_t val = at(slot)->get_int();
50 jint ival = *((jint*) (&val));
51 return ival;
52 }
53
54 jlong StackValueCollection::long_at(int slot) const {
55 #ifdef _LP64
56 return at(slot+1)->get_int();
57 #else
58 union {
59 jlong jl;
60 jint array[2];
61 } value;
62 // Interpreter stack is reversed in memory:
63 // low memory location is in higher java local slot.
64 value.array[0] = at(slot+1)->get_int();
65 value.array[1] = at(slot )->get_int();
66 return value.jl;
67 #endif
68 }
69
70 Handle StackValueCollection::obj_at(int slot) const {
71 return at(slot)->get_obj();
72 }
73
74 jfloat StackValueCollection::float_at(int slot) const {
75 intptr_t res = at(slot)->get_int();
76 return *((jfloat*) (&res));
77 }
78
79 jdouble StackValueCollection::double_at(int slot) const {
80 #ifdef _LP64
81 intptr_t res = at(slot+1)->get_int();
82 return *((jdouble*) (&res));
83 #else
84 union {
85 jdouble jd;
86 jint array[2];
87 } value;
88 // Interpreter stack is reversed in memory:
89 // low memory location is in higher java local slot.
90 value.array[0] = at(slot+1)->get_int();
91 value.array[1] = at(slot )->get_int();
92 return value.jd;
93 #endif
94 }
95
96 void StackValueCollection::set_int_at(int slot, jint value) {
97 intptr_t val;
98 *((jint*) (&val)) = value;
99 at(slot)->set_int(val);
100 }
101
102 void StackValueCollection::set_long_at(int slot, jlong value) {
103 #ifdef _LP64
104 at(slot+1)->set_int(value);
105 #else
106 union {
107 jlong jl;
108 jint array[2];
109 } x;
110 // Interpreter stack is reversed in memory:
111 // low memory location is in higher java local slot.
112 x.jl = value;
113 at(slot+1)->set_int(x.array[0]);
114 at(slot+0)->set_int(x.array[1]);
115 #endif
116 }
117
118 void StackValueCollection::set_obj_at(int slot, Handle value) {
119 at(slot)->set_obj(value);
120 }
121
122 void StackValueCollection::set_float_at(int slot, jfloat value) {
123 #ifdef _LP64
124 union {
125 intptr_t jd;
126 jint array[2];
127 } val;
128 // Interpreter stores 32 bit floats in first half of 64 bit word.
129 val.array[0] = *(jint*)(&value);
130 val.array[1] = 0;
131 at(slot)->set_int(val.jd);
132 #else
133 at(slot)->set_int(*(jint*)(&value));
134 #endif
135 }
136
137 void StackValueCollection::set_double_at(int slot, jdouble value) {
138 #ifdef _LP64
139 at(slot+1)->set_int(*(intptr_t*)(&value));
140 #else
141 union {
142 jdouble jd;
143 jint array[2];
144 } x;
145 // Interpreter stack is reversed in memory:
146 // low memory location is in higher java local slot.
147 x.jd = value;
148 at(slot+1)->set_int(x.array[0]);
149 at(slot+0)->set_int(x.array[1]);
150 #endif
151 }
152
153 #ifndef PRODUCT
154 void StackValueCollection::print() {
155 for(int index = 0; index < size(); index++) {
156 tty->print("\t %2d ", index);
157 at(index)->print_on(tty);
158 if( at(index )->type() == T_INT &&
159 index+1 < size() &&
160 at(index+1)->type() == T_INT ) {
161 tty->print(" " INT64_FORMAT " (long)", long_at(index));
162 tty->cr();
163 tty->print("\t %.15e (double)", double_at(index));
164 tty->print(" " PTR64_FORMAT " (longhex)", long_at(index));
165 }
166 tty->cr();
167 }
168 }
169 #endif