1 /*
   2  * Copyright (c) 2002, 2010, 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 #ifndef CPU_X86_VM_BYTECODEINTERPRETER_X86_INLINE_HPP
  26 #define CPU_X86_VM_BYTECODEINTERPRETER_X86_INLINE_HPP
  27 
  28 // Inline interpreter functions for IA32
  29 
  30 inline jfloat BytecodeInterpreter::VMfloatAdd(jfloat op1, jfloat op2) { return op1 + op2; }
  31 inline jfloat BytecodeInterpreter::VMfloatSub(jfloat op1, jfloat op2) { return op1 - op2; }
  32 inline jfloat BytecodeInterpreter::VMfloatMul(jfloat op1, jfloat op2) { return op1 * op2; }
  33 inline jfloat BytecodeInterpreter::VMfloatDiv(jfloat op1, jfloat op2) { return op1 / op2; }
  34 inline jfloat BytecodeInterpreter::VMfloatRem(jfloat op1, jfloat op2) { return fmod(op1, op2); }
  35 
  36 inline jfloat BytecodeInterpreter::VMfloatNeg(jfloat op) { return -op; }
  37 
  38 inline int32_t BytecodeInterpreter::VMfloatCompare(jfloat op1, jfloat op2, int32_t direction) {
  39   return ( op1 < op2 ? -1 :
  40                op1 > op2 ? 1 :
  41                    op1 == op2 ? 0 :
  42                        (direction == -1 || direction == 1) ? direction : 0);
  43 
  44 }
  45 
  46 inline void BytecodeInterpreter::VMmemCopy64(uint32_t to[2], const uint32_t from[2]) {
  47   // x86 can do unaligned copies but not 64bits at a time
  48   to[0] = from[0]; to[1] = from[1];
  49 }
  50 
  51 // The long operations depend on compiler support for "long long" on x86
  52 
  53 inline jlong BytecodeInterpreter::VMlongAdd(jlong op1, jlong op2) {
  54   return op1 + op2;
  55 }
  56 
  57 inline jlong BytecodeInterpreter::VMlongAnd(jlong op1, jlong op2) {
  58   return op1 & op2;
  59 }
  60 
  61 inline jlong BytecodeInterpreter::VMlongDiv(jlong op1, jlong op2) {
  62   // QQQ what about check and throw...
  63   return op1 / op2;
  64 }
  65 
  66 inline jlong BytecodeInterpreter::VMlongMul(jlong op1, jlong op2) {
  67   return op1 * op2;
  68 }
  69 
  70 inline jlong BytecodeInterpreter::VMlongOr(jlong op1, jlong op2) {
  71   return op1 | op2;
  72 }
  73 
  74 inline jlong BytecodeInterpreter::VMlongSub(jlong op1, jlong op2) {
  75   return op1 - op2;
  76 }
  77 
  78 inline jlong BytecodeInterpreter::VMlongXor(jlong op1, jlong op2) {
  79   return op1 ^ op2;
  80 }
  81 
  82 inline jlong BytecodeInterpreter::VMlongRem(jlong op1, jlong op2) {
  83   return op1 % op2;
  84 }
  85 
  86 inline jlong BytecodeInterpreter::VMlongUshr(jlong op1, jint op2) {
  87   // CVM did this 0x3f mask, is the really needed??? QQQ
  88   return ((unsigned long long) op1) >> (op2 & 0x3F);
  89 }
  90 
  91 inline jlong BytecodeInterpreter::VMlongShr(jlong op1, jint op2) {
  92   return op1 >> (op2 & 0x3F);
  93 }
  94 
  95 inline jlong BytecodeInterpreter::VMlongShl(jlong op1, jint op2) {
  96   return op1 << (op2 & 0x3F);
  97 }
  98 
  99 inline jlong BytecodeInterpreter::VMlongNeg(jlong op) {
 100   return -op;
 101 }
 102 
 103 inline jlong BytecodeInterpreter::VMlongNot(jlong op) {
 104   return ~op;
 105 }
 106 
 107 inline int32_t BytecodeInterpreter::VMlongLtz(jlong op) {
 108   return (op <= 0);
 109 }
 110 
 111 inline int32_t BytecodeInterpreter::VMlongGez(jlong op) {
 112   return (op >= 0);
 113 }
 114 
 115 inline int32_t BytecodeInterpreter::VMlongEqz(jlong op) {
 116   return (op == 0);
 117 }
 118 
 119 inline int32_t BytecodeInterpreter::VMlongEq(jlong op1, jlong op2) {
 120   return (op1 == op2);
 121 }
 122 
 123 inline int32_t BytecodeInterpreter::VMlongNe(jlong op1, jlong op2) {
 124   return (op1 != op2);
 125 }
 126 
 127 inline int32_t BytecodeInterpreter::VMlongGe(jlong op1, jlong op2) {
 128   return (op1 >= op2);
 129 }
 130 
 131 inline int32_t BytecodeInterpreter::VMlongLe(jlong op1, jlong op2) {
 132   return (op1 <= op2);
 133 }
 134 
 135 inline int32_t BytecodeInterpreter::VMlongLt(jlong op1, jlong op2) {
 136   return (op1 < op2);
 137 }
 138 
 139 inline int32_t BytecodeInterpreter::VMlongGt(jlong op1, jlong op2) {
 140   return (op1 > op2);
 141 }
 142 
 143 inline int32_t BytecodeInterpreter::VMlongCompare(jlong op1, jlong op2) {
 144   return (VMlongLt(op1, op2) ? -1 : VMlongGt(op1, op2) ? 1 : 0);
 145 }
 146 
 147 // Long conversions
 148 
 149 inline jdouble BytecodeInterpreter::VMlong2Double(jlong val) {
 150   return (jdouble) val;
 151 }
 152 
 153 inline jfloat BytecodeInterpreter::VMlong2Float(jlong val) {
 154   return (jfloat) val;
 155 }
 156 
 157 inline jint BytecodeInterpreter::VMlong2Int(jlong val) {
 158   return (jint) val;
 159 }
 160 
 161 // Double Arithmetic
 162 
 163 inline jdouble BytecodeInterpreter::VMdoubleAdd(jdouble op1, jdouble op2) {
 164   return op1 + op2;
 165 }
 166 
 167 inline jdouble BytecodeInterpreter::VMdoubleDiv(jdouble op1, jdouble op2) {
 168   // Divide by zero... QQQ
 169   return op1 / op2;
 170 }
 171 
 172 inline jdouble BytecodeInterpreter::VMdoubleMul(jdouble op1, jdouble op2) {
 173   return op1 * op2;
 174 }
 175 
 176 inline jdouble BytecodeInterpreter::VMdoubleNeg(jdouble op) {
 177   return -op;
 178 }
 179 
 180 inline jdouble BytecodeInterpreter::VMdoubleRem(jdouble op1, jdouble op2) {
 181   return fmod(op1, op2);
 182 }
 183 
 184 inline jdouble BytecodeInterpreter::VMdoubleSub(jdouble op1, jdouble op2) {
 185   return op1 - op2;
 186 }
 187 
 188 inline int32_t BytecodeInterpreter::VMdoubleCompare(jdouble op1, jdouble op2, int32_t direction) {
 189   return ( op1 < op2 ? -1 :
 190                op1 > op2 ? 1 :
 191                    op1 == op2 ? 0 :
 192                        (direction == -1 || direction == 1) ? direction : 0);
 193 }
 194 
 195 // Double Conversions
 196 
 197 inline jfloat BytecodeInterpreter::VMdouble2Float(jdouble val) {
 198   return (jfloat) val;
 199 }
 200 
 201 // Float Conversions
 202 
 203 inline jdouble BytecodeInterpreter::VMfloat2Double(jfloat op) {
 204   return (jdouble) op;
 205 }
 206 
 207 // Integer Arithmetic
 208 
 209 inline jint BytecodeInterpreter::VMintAdd(jint op1, jint op2) {
 210   return op1 + op2;
 211 }
 212 
 213 inline jint BytecodeInterpreter::VMintAnd(jint op1, jint op2) {
 214   return op1 & op2;
 215 }
 216 
 217 inline jint BytecodeInterpreter::VMintDiv(jint op1, jint op2) {
 218   /* it's possible we could catch this special case implicitly */
 219   if ((juint)op1 == 0x80000000 && op2 == -1) return op1;
 220   else return op1 / op2;
 221 }
 222 
 223 inline jint BytecodeInterpreter::VMintMul(jint op1, jint op2) {
 224   return op1 * op2;
 225 }
 226 
 227 inline jint BytecodeInterpreter::VMintNeg(jint op) {
 228   return -op;
 229 }
 230 
 231 inline jint BytecodeInterpreter::VMintOr(jint op1, jint op2) {
 232   return op1 | op2;
 233 }
 234 
 235 inline jint BytecodeInterpreter::VMintRem(jint op1, jint op2) {
 236   /* it's possible we could catch this special case implicitly */
 237   if ((juint)op1 == 0x80000000 && op2 == -1) return 0;
 238   else return op1 % op2;
 239 }
 240 
 241 inline jint BytecodeInterpreter::VMintShl(jint op1, jint op2) {
 242   return op1 << op2;
 243 }
 244 
 245 inline jint BytecodeInterpreter::VMintShr(jint op1, jint op2) {
 246   return op1 >> (op2 & 0x1f);
 247 }
 248 
 249 inline jint BytecodeInterpreter::VMintSub(jint op1, jint op2) {
 250   return op1 - op2;
 251 }
 252 
 253 inline jint BytecodeInterpreter::VMintUshr(jint op1, jint op2) {
 254   return ((juint) op1) >> (op2 & 0x1f);
 255 }
 256 
 257 inline jint BytecodeInterpreter::VMintXor(jint op1, jint op2) {
 258   return op1 ^ op2;
 259 }
 260 
 261 inline jdouble BytecodeInterpreter::VMint2Double(jint val) {
 262   return (jdouble) val;
 263 }
 264 
 265 inline jfloat BytecodeInterpreter::VMint2Float(jint val) {
 266   return (jfloat) val;
 267 }
 268 
 269 inline jlong BytecodeInterpreter::VMint2Long(jint val) {
 270   return (jlong) val;
 271 }
 272 
 273 inline jchar BytecodeInterpreter::VMint2Char(jint val) {
 274   return (jchar) val;
 275 }
 276 
 277 inline jshort BytecodeInterpreter::VMint2Short(jint val) {
 278   return (jshort) val;
 279 }
 280 
 281 inline jbyte BytecodeInterpreter::VMint2Byte(jint val) {
 282   return (jbyte) val;
 283 }
 284 
 285 #endif // CPU_X86_VM_BYTECODEINTERPRETER_X86_INLINE_HPP