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1 /*
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2 * Copyright 2001-2005 Sun Microsystems, Inc. All Rights Reserved.
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3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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4 *
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5 * This code is free software; you can redistribute it and/or modify it
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6 * under the terms of the GNU General Public License version 2 only, as
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7 * published by the Free Software Foundation.
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8 *
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9 * This code is distributed in the hope that it will be useful, but WITHOUT
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10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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12 * version 2 for more details (a copy is included in the LICENSE file that
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13 * accompanied this code).
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14 *
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15 * You should have received a copy of the GNU General Public License version
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16 * 2 along with this work; if not, write to the Free Software Foundation,
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17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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18 *
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19 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
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20 * CA 95054 USA or visit www.sun.com if you need additional information or
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21 * have any questions.
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22 *
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23 */
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24
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25 # include "incls/_precompiled.incl"
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26 # include "incls/_stackValueCollection.cpp.incl"
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27
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28 jint StackValueCollection::int_at(int slot) const {
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29 intptr_t val = at(slot)->get_int();
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30 jint ival = *((jint*) (&val));
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31 return ival;
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32 }
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33
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34 jlong StackValueCollection::long_at(int slot) const {
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35 #ifdef _LP64
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36 return at(slot+1)->get_int();
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37 #else
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38 union {
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39 jlong jl;
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40 jint array[2];
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41 } value;
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42 // Interpreter stack is reversed in memory:
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43 // low memory location is in higher java local slot.
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44 value.array[0] = at(slot+1)->get_int();
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45 value.array[1] = at(slot )->get_int();
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46 return value.jl;
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47 #endif
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48 }
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49
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50 Handle StackValueCollection::obj_at(int slot) const {
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51 return at(slot)->get_obj();
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52 }
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53
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54 jfloat StackValueCollection::float_at(int slot) const {
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55 intptr_t res = at(slot)->get_int();
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56 return *((jfloat*) (&res));
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57 }
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58
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59 jdouble StackValueCollection::double_at(int slot) const {
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60 #ifdef _LP64
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61 intptr_t res = at(slot+1)->get_int();
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62 return *((jdouble*) (&res));
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63 #else
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64 union {
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65 jdouble jd;
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66 jint array[2];
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67 } value;
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68 // Interpreter stack is reversed in memory:
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69 // low memory location is in higher java local slot.
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70 value.array[0] = at(slot+1)->get_int();
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71 value.array[1] = at(slot )->get_int();
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72 return value.jd;
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73 #endif
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74 }
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75
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76 void StackValueCollection::set_int_at(int slot, jint value) {
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77 intptr_t val;
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78 *((jint*) (&val)) = value;
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79 at(slot)->set_int(val);
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80 }
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81
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82 void StackValueCollection::set_long_at(int slot, jlong value) {
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83 #ifdef _LP64
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84 at(slot+1)->set_int(value);
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85 #else
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86 union {
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87 jlong jl;
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88 jint array[2];
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89 } x;
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90 // Interpreter stack is reversed in memory:
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91 // low memory location is in higher java local slot.
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92 x.jl = value;
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93 at(slot+1)->set_int(x.array[0]);
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94 at(slot+0)->set_int(x.array[1]);
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95 #endif
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96 }
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97
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98 void StackValueCollection::set_obj_at(int slot, Handle value) {
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99 at(slot)->set_obj(value);
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100 }
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101
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102 void StackValueCollection::set_float_at(int slot, jfloat value) {
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103 #ifdef _LP64
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104 union {
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105 intptr_t jd;
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106 jint array[2];
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107 } val;
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108 // Interpreter stores 32 bit floats in first half of 64 bit word.
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109 val.array[0] = *(jint*)(&value);
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110 val.array[1] = 0;
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111 at(slot)->set_int(val.jd);
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112 #else
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113 at(slot)->set_int(*(jint*)(&value));
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114 #endif
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115 }
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116
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117 void StackValueCollection::set_double_at(int slot, jdouble value) {
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118 #ifdef _LP64
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119 at(slot+1)->set_int(*(intptr_t*)(&value));
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120 #else
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121 union {
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122 jdouble jd;
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123 jint array[2];
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124 } x;
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125 // Interpreter stack is reversed in memory:
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126 // low memory location is in higher java local slot.
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127 x.jd = value;
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128 at(slot+1)->set_int(x.array[0]);
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129 at(slot+0)->set_int(x.array[1]);
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130 #endif
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131 }
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132
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133 #ifndef PRODUCT
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134 void StackValueCollection::print() {
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135 for(int index = 0; index < size(); index++) {
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136 tty->print("\t %2d ", index);
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137 at(index)->print_on(tty);
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138 if( at(index )->type() == T_INT &&
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139 index+1 < size() &&
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140 at(index+1)->type() == T_INT ) {
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141 tty->print(" " INT64_FORMAT " (long)", long_at(index));
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142 tty->cr();
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143 tty->print("\t %.15e (double)", double_at(index));
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144 tty->print(" " PTR64_FORMAT " (longhex)", long_at(index));
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145 }
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146 tty->cr();
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147 }
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148 }
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149 #endif
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