Mercurial > hg > truffle
annotate src/cpu/ppc/vm/bytes_ppc.hpp @ 18357:09550eb6ddfb
replace use of '==' with .equals()
author | Doug Simon <doug.simon@oracle.com> |
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date | Wed, 12 Nov 2014 15:33:20 +0100 |
parents | 56e7f5560e60 |
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rev | line source |
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1 /* |
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2 * Copyright (c) 1997, 2013, Oracle and/or its affiliates. All rights reserved. |
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3 * Copyright 2012, 2013 SAP AG. All rights reserved. |
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4 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
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5 * |
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6 * This code is free software; you can redistribute it and/or modify it |
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7 * under the terms of the GNU General Public License version 2 only, as |
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8 * published by the Free Software Foundation. |
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9 * |
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10 * This code is distributed in the hope that it will be useful, but WITHOUT |
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11 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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12 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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13 * version 2 for more details (a copy is included in the LICENSE file that |
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14 * accompanied this code). |
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15 * |
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16 * You should have received a copy of the GNU General Public License version |
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17 * 2 along with this work; if not, write to the Free Software Foundation, |
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18 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
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19 * |
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20 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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21 * or visit www.oracle.com if you need additional information or have any |
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22 * questions. |
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23 * |
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24 */ |
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25 |
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26 #ifndef CPU_PPC_VM_BYTES_PPC_HPP |
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27 #define CPU_PPC_VM_BYTES_PPC_HPP |
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28 |
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29 #include "memory/allocation.hpp" |
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30 |
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31 class Bytes: AllStatic { |
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32 public: |
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33 // Efficient reading and writing of unaligned unsigned data in platform-specific byte ordering |
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34 // PowerPC needs to check for alignment. |
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35 |
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37 |
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38 #if defined(VM_LITTLE_ENDIAN) |
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39 |
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40 // Returns true, if the byte ordering used by Java is different from the native byte ordering |
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41 // of the underlying machine. For example, true for Intel x86, False, for Solaris on Sparc. |
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42 static inline bool is_Java_byte_ordering_different() { return true; } |
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43 |
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44 // Forward declarations of the compiler-dependent implementation |
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45 static inline u2 swap_u2(u2 x); |
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46 static inline u4 swap_u4(u4 x); |
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47 static inline u8 swap_u8(u8 x); |
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48 |
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49 static inline u2 get_native_u2(address p) { |
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50 return (intptr_t(p) & 1) == 0 |
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51 ? *(u2*)p |
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52 : ( u2(p[1]) << 8 ) |
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53 | ( u2(p[0]) ); |
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54 } |
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55 |
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56 static inline u4 get_native_u4(address p) { |
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57 switch (intptr_t(p) & 3) { |
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58 case 0: return *(u4*)p; |
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59 |
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60 case 2: return ( u4( ((u2*)p)[1] ) << 16 ) |
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61 | ( u4( ((u2*)p)[0] ) ); |
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62 |
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63 default: return ( u4(p[3]) << 24 ) |
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64 | ( u4(p[2]) << 16 ) |
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65 | ( u4(p[1]) << 8 ) |
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66 | u4(p[0]); |
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67 } |
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68 } |
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69 |
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70 static inline u8 get_native_u8(address p) { |
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71 switch (intptr_t(p) & 7) { |
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72 case 0: return *(u8*)p; |
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73 |
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74 case 4: return ( u8( ((u4*)p)[1] ) << 32 ) |
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75 | ( u8( ((u4*)p)[0] ) ); |
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76 |
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77 case 2: return ( u8( ((u2*)p)[3] ) << 48 ) |
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78 | ( u8( ((u2*)p)[2] ) << 32 ) |
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79 | ( u8( ((u2*)p)[1] ) << 16 ) |
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80 | ( u8( ((u2*)p)[0] ) ); |
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81 |
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82 default: return ( u8(p[7]) << 56 ) |
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83 | ( u8(p[6]) << 48 ) |
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84 | ( u8(p[5]) << 40 ) |
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85 | ( u8(p[4]) << 32 ) |
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86 | ( u8(p[3]) << 24 ) |
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87 | ( u8(p[2]) << 16 ) |
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88 | ( u8(p[1]) << 8 ) |
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89 | u8(p[0]); |
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90 } |
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91 } |
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92 |
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93 |
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94 |
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95 static inline void put_native_u2(address p, u2 x) { |
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96 if ( (intptr_t(p) & 1) == 0 ) *(u2*)p = x; |
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97 else { |
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98 p[1] = x >> 8; |
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99 p[0] = x; |
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100 } |
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101 } |
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102 |
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103 static inline void put_native_u4(address p, u4 x) { |
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104 switch ( intptr_t(p) & 3 ) { |
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105 case 0: *(u4*)p = x; |
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106 break; |
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107 |
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108 case 2: ((u2*)p)[1] = x >> 16; |
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109 ((u2*)p)[0] = x; |
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110 break; |
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111 |
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112 default: ((u1*)p)[3] = x >> 24; |
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113 ((u1*)p)[2] = x >> 16; |
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114 ((u1*)p)[1] = x >> 8; |
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115 ((u1*)p)[0] = x; |
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116 break; |
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117 } |
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118 } |
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119 |
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120 static inline void put_native_u8(address p, u8 x) { |
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121 switch ( intptr_t(p) & 7 ) { |
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122 case 0: *(u8*)p = x; |
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123 break; |
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124 |
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125 case 4: ((u4*)p)[1] = x >> 32; |
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126 ((u4*)p)[0] = x; |
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127 break; |
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128 |
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129 case 2: ((u2*)p)[3] = x >> 48; |
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130 ((u2*)p)[2] = x >> 32; |
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131 ((u2*)p)[1] = x >> 16; |
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132 ((u2*)p)[0] = x; |
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133 break; |
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134 |
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135 default: ((u1*)p)[7] = x >> 56; |
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136 ((u1*)p)[6] = x >> 48; |
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137 ((u1*)p)[5] = x >> 40; |
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138 ((u1*)p)[4] = x >> 32; |
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139 ((u1*)p)[3] = x >> 24; |
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140 ((u1*)p)[2] = x >> 16; |
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141 ((u1*)p)[1] = x >> 8; |
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142 ((u1*)p)[0] = x; |
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143 } |
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144 } |
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145 |
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146 // Efficient reading and writing of unaligned unsigned data in Java byte ordering (i.e. big-endian ordering) |
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147 // (no byte-order reversal is needed since Power CPUs are big-endian oriented). |
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148 static inline u2 get_Java_u2(address p) { return swap_u2(get_native_u2(p)); } |
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149 static inline u4 get_Java_u4(address p) { return swap_u4(get_native_u4(p)); } |
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150 static inline u8 get_Java_u8(address p) { return swap_u8(get_native_u8(p)); } |
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151 |
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152 static inline void put_Java_u2(address p, u2 x) { put_native_u2(p, swap_u2(x)); } |
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153 static inline void put_Java_u4(address p, u4 x) { put_native_u4(p, swap_u4(x)); } |
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154 static inline void put_Java_u8(address p, u8 x) { put_native_u8(p, swap_u8(x)); } |
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155 |
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156 #else // !defined(VM_LITTLE_ENDIAN) |
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157 |
14408
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158 // Returns true, if the byte ordering used by Java is different from the nativ byte ordering |
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159 // of the underlying machine. For example, true for Intel x86, False, for Solaris on Sparc. |
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160 static inline bool is_Java_byte_ordering_different() { return false; } |
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161 |
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162 // Thus, a swap between native and Java ordering is always a no-op: |
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163 static inline u2 swap_u2(u2 x) { return x; } |
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164 static inline u4 swap_u4(u4 x) { return x; } |
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165 static inline u8 swap_u8(u8 x) { return x; } |
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166 |
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167 static inline u2 get_native_u2(address p) { |
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168 return (intptr_t(p) & 1) == 0 |
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169 ? *(u2*)p |
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170 : ( u2(p[0]) << 8 ) |
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171 | ( u2(p[1]) ); |
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|
172 } |
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173 |
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174 static inline u4 get_native_u4(address p) { |
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175 switch (intptr_t(p) & 3) { |
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176 case 0: return *(u4*)p; |
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177 |
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178 case 2: return ( u4( ((u2*)p)[0] ) << 16 ) |
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179 | ( u4( ((u2*)p)[1] ) ); |
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180 |
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181 default: return ( u4(p[0]) << 24 ) |
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182 | ( u4(p[1]) << 16 ) |
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183 | ( u4(p[2]) << 8 ) |
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184 | u4(p[3]); |
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|
185 } |
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|
186 } |
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187 |
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188 static inline u8 get_native_u8(address p) { |
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189 switch (intptr_t(p) & 7) { |
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190 case 0: return *(u8*)p; |
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191 |
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192 case 4: return ( u8( ((u4*)p)[0] ) << 32 ) |
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193 | ( u8( ((u4*)p)[1] ) ); |
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194 |
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195 case 2: return ( u8( ((u2*)p)[0] ) << 48 ) |
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196 | ( u8( ((u2*)p)[1] ) << 32 ) |
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197 | ( u8( ((u2*)p)[2] ) << 16 ) |
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198 | ( u8( ((u2*)p)[3] ) ); |
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199 |
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200 default: return ( u8(p[0]) << 56 ) |
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201 | ( u8(p[1]) << 48 ) |
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202 | ( u8(p[2]) << 40 ) |
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203 | ( u8(p[3]) << 32 ) |
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204 | ( u8(p[4]) << 24 ) |
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|
205 | ( u8(p[5]) << 16 ) |
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206 | ( u8(p[6]) << 8 ) |
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|
207 | u8(p[7]); |
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|
208 } |
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|
209 } |
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|
210 |
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|
211 |
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|
212 |
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|
213 static inline void put_native_u2(address p, u2 x) { |
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|
214 if ( (intptr_t(p) & 1) == 0 ) { *(u2*)p = x; } |
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|
215 else { |
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|
216 p[0] = x >> 8; |
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|
217 p[1] = x; |
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|
218 } |
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|
219 } |
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|
220 |
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|
221 static inline void put_native_u4(address p, u4 x) { |
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|
222 switch ( intptr_t(p) & 3 ) { |
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|
223 case 0: *(u4*)p = x; |
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|
224 break; |
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|
225 |
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|
226 case 2: ((u2*)p)[0] = x >> 16; |
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227 ((u2*)p)[1] = x; |
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|
228 break; |
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|
229 |
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|
230 default: ((u1*)p)[0] = x >> 24; |
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|
231 ((u1*)p)[1] = x >> 16; |
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|
232 ((u1*)p)[2] = x >> 8; |
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|
233 ((u1*)p)[3] = x; |
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parents:
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|
234 break; |
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parents:
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|
235 } |
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parents:
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|
236 } |
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|
237 |
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|
238 static inline void put_native_u8(address p, u8 x) { |
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|
239 switch ( intptr_t(p) & 7 ) { |
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|
240 case 0: *(u8*)p = x; |
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parents:
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|
241 break; |
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|
242 |
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|
243 case 4: ((u4*)p)[0] = x >> 32; |
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|
244 ((u4*)p)[1] = x; |
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|
245 break; |
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|
246 |
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|
247 case 2: ((u2*)p)[0] = x >> 48; |
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|
248 ((u2*)p)[1] = x >> 32; |
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|
249 ((u2*)p)[2] = x >> 16; |
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|
250 ((u2*)p)[3] = x; |
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parents:
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|
251 break; |
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|
252 |
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|
253 default: ((u1*)p)[0] = x >> 56; |
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|
254 ((u1*)p)[1] = x >> 48; |
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|
255 ((u1*)p)[2] = x >> 40; |
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parents:
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|
256 ((u1*)p)[3] = x >> 32; |
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|
257 ((u1*)p)[4] = x >> 24; |
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|
258 ((u1*)p)[5] = x >> 16; |
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|
259 ((u1*)p)[6] = x >> 8; |
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|
260 ((u1*)p)[7] = x; |
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parents:
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|
261 } |
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parents:
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|
262 } |
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parents:
diff
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|
263 |
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8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
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changeset
|
264 // Efficient reading and writing of unaligned unsigned data in Java byte ordering (i.e. big-endian ordering) |
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265 // (no byte-order reversal is needed since Power CPUs are big-endian oriented). |
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266 static inline u2 get_Java_u2(address p) { return get_native_u2(p); } |
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267 static inline u4 get_Java_u4(address p) { return get_native_u4(p); } |
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268 static inline u8 get_Java_u8(address p) { return get_native_u8(p); } |
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269 |
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270 static inline void put_Java_u2(address p, u2 x) { put_native_u2(p, x); } |
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271 static inline void put_Java_u4(address p, u4 x) { put_native_u4(p, x); } |
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272 static inline void put_Java_u8(address p, u8 x) { put_native_u8(p, x); } |
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273 |
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274 #endif // VM_LITTLE_ENDIAN |
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275 }; |
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276 |
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277 #if defined(TARGET_OS_ARCH_linux_ppc) |
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278 #include "bytes_linux_ppc.inline.hpp" |
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279 #endif |
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280 |
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281 #endif // CPU_PPC_VM_BYTES_PPC_HPP |