JDK14/Java14源码在线阅读

/*
 * Copyright (c) 2002, 2019, Oracle and/or its affiliates. All rights reserved.
 * Copyright 2007, 2010 Red Hat, Inc.
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
 * This code is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License version 2 only, as
 * published by the Free Software Foundation.
 *
 * This code is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
 * version 2 for more details (a copy is included in the LICENSE file that
 * accompanied this code).
 *
 * You should have received a copy of the GNU General Public License version
 * 2 along with this work; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
 *
 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
 * or visit www.oracle.com if you need additional information or have any
 * questions.
 *
 */

#ifndef CPU_ZERO_BYTECODEINTERPRETER_ZERO_INLINE_HPP
#define CPU_ZERO_BYTECODEINTERPRETER_ZERO_INLINE_HPP

// Inline interpreter functions for zero

inline jfloat BytecodeInterpreter::VMfloatAdd(jfloat op1, jfloat op2) {
  return op1 + op2;
}

inline jfloat BytecodeInterpreter::VMfloatSub(jfloat op1, jfloat op2) {
  return op1 - op2;
}

inline jfloat BytecodeInterpreter::VMfloatMul(jfloat op1, jfloat op2) {
  return op1 * op2;
}

inline jfloat BytecodeInterpreter::VMfloatDiv(jfloat op1, jfloat op2) {
  return op1 / op2;
}

inline jfloat BytecodeInterpreter::VMfloatRem(jfloat op1, jfloat op2) {
  return fmod(op1, op2);
}

inline jfloat BytecodeInterpreter::VMfloatNeg(jfloat op) {
  return -op;
}

inline int32_t BytecodeInterpreter::VMfloatCompare(jfloat  op1,
                                                   jfloat  op2,
                                                   int32_t direction) {
  return ( op1 < op2 ? -1 :
               op1 > op2 ? 1 :
                   op1 == op2 ? 0 :
                       (direction == -1 || direction == 1) ? direction : 0);

}

inline void BytecodeInterpreter::VMmemCopy64(uint32_t       to[2],
                                             const uint32_t from[2]) {
  *(uint64_t *) to = *(uint64_t *) from;
}

inline jlong BytecodeInterpreter::VMlongAdd(jlong op1, jlong op2) {
  return op1 + op2;
}

inline jlong BytecodeInterpreter::VMlongAnd(jlong op1, jlong op2) {
  return op1 & op2;
}

inline jlong BytecodeInterpreter::VMlongDiv(jlong op1, jlong op2) {
  /* it's possible we could catch this special case implicitly */
  if (op1 == (jlong) 0x8000000000000000LL && op2 == -1) return op1;
  else return op1 / op2;
}

inline jlong BytecodeInterpreter::VMlongMul(jlong op1, jlong op2) {
  return op1 * op2;
}

inline jlong BytecodeInterpreter::VMlongOr(jlong op1, jlong op2) {
  return op1 | op2;
}

inline jlong BytecodeInterpreter::VMlongSub(jlong op1, jlong op2) {
  return op1 - op2;
}

inline jlong BytecodeInterpreter::VMlongXor(jlong op1, jlong op2) {
  return op1 ^ op2;
}

inline jlong BytecodeInterpreter::VMlongRem(jlong op1, jlong op2) {
  /* it's possible we could catch this special case implicitly */
  if (op1 == (jlong) 0x8000000000000000LL && op2 == -1) return 0;
  else return op1 % op2;
}

inline jlong BytecodeInterpreter::VMlongUshr(jlong op1, jint op2) {
  return ((unsigned long long) op1) >> (op2 & 0x3F);
}

inline jlong BytecodeInterpreter::VMlongShr(jlong op1, jint op2) {
  return op1 >> (op2 & 0x3F);
}

inline jlong BytecodeInterpreter::VMlongShl(jlong op1, jint op2) {
  return op1 << (op2 & 0x3F);
}

inline jlong BytecodeInterpreter::VMlongNeg(jlong op) {
  return -op;
}

inline jlong BytecodeInterpreter::VMlongNot(jlong op) {
  return ~op;
}

inline int32_t BytecodeInterpreter::VMlongLtz(jlong op) {
  return (op <= 0);
}

inline int32_t BytecodeInterpreter::VMlongGez(jlong op) {
  return (op >= 0);
}

inline int32_t BytecodeInterpreter::VMlongEqz(jlong op) {
  return (op == 0);
}

inline int32_t BytecodeInterpreter::VMlongEq(jlong op1, jlong op2) {
  return (op1 == op2);
}

inline int32_t BytecodeInterpreter::VMlongNe(jlong op1, jlong op2) {
  return (op1 != op2);
}

inline int32_t BytecodeInterpreter::VMlongGe(jlong op1, jlong op2) {
  return (op1 >= op2);
}

inline int32_t BytecodeInterpreter::VMlongLe(jlong op1, jlong op2) {
  return (op1 <= op2);
}

inline int32_t BytecodeInterpreter::VMlongLt(jlong op1, jlong op2) {
  return (op1 < op2);
}

inline int32_t BytecodeInterpreter::VMlongGt(jlong op1, jlong op2) {
  return (op1 > op2);
}

inline int32_t BytecodeInterpreter::VMlongCompare(jlong op1, jlong op2) {
  return (VMlongLt(op1, op2) ? -1 : VMlongGt(op1, op2) ? 1 : 0);
}

// Long conversions

inline jdouble BytecodeInterpreter::VMlong2Double(jlong val) {
  return (jdouble) val;
}

inline jfloat BytecodeInterpreter::VMlong2Float(jlong val) {
  return (jfloat) val;
}

inline jint BytecodeInterpreter::VMlong2Int(jlong val) {
  return (jint) val;
}

// Double Arithmetic

inline jdouble BytecodeInterpreter::VMdoubleAdd(jdouble op1, jdouble op2) {
  return op1 + op2;
}

inline jdouble BytecodeInterpreter::VMdoubleDiv(jdouble op1, jdouble op2) {
  // Divide by zero... QQQ
  return op1 / op2;
}

inline jdouble BytecodeInterpreter::VMdoubleMul(jdouble op1, jdouble op2) {
  return op1 * op2;
}

inline jdouble BytecodeInterpreter::VMdoubleNeg(jdouble op) {
  return -op;
}

inline jdouble BytecodeInterpreter::VMdoubleRem(jdouble op1, jdouble op2) {
  return fmod(op1, op2);
}

inline jdouble BytecodeInterpreter::VMdoubleSub(jdouble op1, jdouble op2) {
  return op1 - op2;
}

inline int32_t BytecodeInterpreter::VMdoubleCompare(jdouble op1,
                                                    jdouble op2,
                                                    int32_t direction) {
  return ( op1 < op2 ? -1 :
               op1 > op2 ? 1 :
                   op1 == op2 ? 0 :
                       (direction == -1 || direction == 1) ? direction : 0);
}

// Double Conversions

inline jfloat BytecodeInterpreter::VMdouble2Float(jdouble val) {
  return (jfloat) val;
}

// Float Conversions

inline jdouble BytecodeInterpreter::VMfloat2Double(jfloat op) {
  return (jdouble) op;
}

// Integer Arithmetic

inline jint BytecodeInterpreter::VMintAdd(jint op1, jint op2) {
  return op1 + op2;
}

inline jint BytecodeInterpreter::VMintAnd(jint op1, jint op2) {
  return op1 & op2;
}

inline jint BytecodeInterpreter::VMintDiv(jint op1, jint op2) {
  /* it's possible we could catch this special case implicitly */
  if (op1 == (jint) 0x80000000 && op2 == -1) return op1;
  else return op1 / op2;
}

inline jint BytecodeInterpreter::VMintMul(jint op1, jint op2) {
  return op1 * op2;
}

inline jint BytecodeInterpreter::VMintNeg(jint op) {
  return -op;
}

inline jint BytecodeInterpreter::VMintOr(jint op1, jint op2) {
  return op1 | op2;
}

inline jint BytecodeInterpreter::VMintRem(jint op1, jint op2) {
  /* it's possible we could catch this special case implicitly */
  if (op1 == (jint) 0x80000000 && op2 == -1) return 0;
  else return op1 % op2;
}

inline jint BytecodeInterpreter::VMintShl(jint op1, jint op2) {
  return op1 << (op2 & 0x1F);
}

inline jint BytecodeInterpreter::VMintShr(jint op1, jint op2) {
  return op1 >> (op2 & 0x1F);
}


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