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J9ByteCodeIterator.cpp
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/*******************************************************************************
* Copyright (c) 2000, 2021 IBM Corp. and others
*
* This program and the accompanying materials are made available under
* the terms of the Eclipse Public License 2.0 which accompanies this
* distribution and is available at https://www.eclipse.org/legal/epl-2.0/
* or the Apache License, Version 2.0 which accompanies this distribution and
* is available at https://www.apache.org/licenses/LICENSE-2.0.
*
* This Source Code may also be made available under the following
* Secondary Licenses when the conditions for such availability set
* forth in the Eclipse Public License, v. 2.0 are satisfied: GNU
* General Public License, version 2 with the GNU Classpath
* Exception [1] and GNU General Public License, version 2 with the
* OpenJDK Assembly Exception [2].
*
* [1] https://www.gnu.org/software/classpath/license.html
* [2] http://openjdk.java.net/legal/assembly-exception.html
*
* SPDX-License-Identifier: EPL-2.0 OR Apache-2.0 OR GPL-2.0 WITH Classpath-exception-2.0 OR LicenseRef-GPL-2.0 WITH Assembly-exception
*******************************************************************************/
#include "ilgen/J9ByteCodeIterator.hpp"
#include "compile/Compilation.hpp"
#include "compile/Method.hpp"
#include "env/VMJ9.h"
#include "ras/Debug.hpp"
#include "env/IO.hpp"
void
TR_J9ByteCodeIterator::initialize(TR_ResolvedJ9Method * method, TR_J9VMBase * fe)
{
_fe = fe;
_code = method->bytecodeStart();
_bcIndex = -1;
}
int32_t
TR_J9ByteCodeIterator::nextSwitchValue(int32_t & bcIndex)
{
int32_t value = *(int32_t *)&_code[bcIndex];
bcIndex += 4;
return value;
}
void
TR_J9ByteCodeIterator::stepOverVariableSizeBC()
{
if (_bc == J9BCwide)
convertOpCodeToByteCodeEnum(++_bcIndex) == J9BCiinc ? _bcIndex += 5 : _bcIndex += 3;
else if (_bc == J9BClookupswitch)
{
_bcIndex = defaultTargetIndex() + 4;
int32_t tableSize = nextSwitchValue(_bcIndex);
_bcIndex += (8 * tableSize);
}
else
{
TR_ASSERT(_bc == J9BCtableswitch, "invalid 0 size for a byte code");
_bcIndex = defaultTargetIndex() + 4;
int32_t low = nextSwitchValue(_bcIndex);
int32_t high = nextSwitchValue(_bcIndex);
_bcIndex += (4 * (high - low + 1));
}
}
bool
TR_J9ByteCodeIterator::isThisChanged()
{
for (TR_J9ByteCode bc = first(); bc != J9BCunknown; bc = next())
{
switch (bc)
{
case J9BCistore0:
case J9BClstore0:
case J9BCfstore0:
case J9BCdstore0:
case J9BCastore0:
return true;
case J9BCistore:
case J9BClstore:
case J9BCfstore:
case J9BCdstore:
case J9BCastore:
case J9BCistorew:
case J9BClstorew:
case J9BCfstorew:
case J9BCdstorew:
case J9BCastorew:
if (nextByte() == 0)
return true;
default:
//nothing to do here
break;
}
}
return false;
}
int32_t
TR_J9ByteCodeIterator::findFloatingPointInstruction()
{
bool isVolatile, isPrivate;
TR::DataType type = TR::NoType;
uint32_t offset;
void * staticAddress;
for (TR_J9ByteCode bc = first(); bc != J9BCunknown; bc = next())
switch (bc)
{
case J9BCfconst0: case J9BCfconst1: case J9BCfconst2:
case J9BCdconst0: case J9BCdconst1:
case J9BCldc2dw:
case J9BCfload: case J9BCdload:
case J9BCfload0: case J9BCfload1: case J9BCfload2: case J9BCfload3:
case J9BCdload0: case J9BCdload1: case J9BCdload2: case J9BCdload3:
case J9BCfaload: case J9BCdaload:
case J9BCfloadw: case J9BCdloadw:
case J9BCfstore: case J9BCdstore:
case J9BCfstorew: case J9BCdstorew:
case J9BCfstore0: case J9BCfstore1: case J9BCfstore2: case J9BCfstore3:
case J9BCdstore0: case J9BCdstore1: case J9BCdstore2: case J9BCdstore3:
case J9BCfastore: case J9BCdastore:
case J9BCfadd: case J9BCdadd:
case J9BCfsub: case J9BCdsub:
case J9BCfmul: case J9BCdmul:
case J9BCfdiv: case J9BCddiv:
case J9BCfrem: case J9BCdrem:
case J9BCfneg: case J9BCdneg:
case J9BCi2f: case J9BCi2d:
case J9BCl2f: case J9BCl2d: case J9BCf2i: case J9BCf2l: case J9BCf2d:
case J9BCd2i: case J9BCd2l: case J9BCd2f:
case J9BCfcmpl: case J9BCfcmpg: case J9BCdcmpl: case J9BCdcmpg:
return bcIndex();
case J9BCldc:
if (method()->getLDCType(nextByte()) == TR::Float)
return bcIndex();
break;
case J9BCldcw:
if (method()->getLDCType(next2Bytes()) == TR::Float)
return bcIndex();
break;
case J9BCgetfield: case J9BCputfield:
{
method()->fieldAttributes(_compilation, next2Bytes(), &offset, &type, &isVolatile, NULL, &isPrivate, (bc == J9BCputfield), NULL, false);
if (type == TR::Float || type == TR::Double)
return bcIndex();
break;
}
case J9BCgetstatic: case J9BCputstatic:
method()->staticAttributes(_compilation, next2Bytes(), &staticAddress, &type, &isVolatile, NULL, &isPrivate, (bc == J9BCputstatic), NULL, false);
if (type == TR::Float || type == TR::Double)
return bcIndex();
break;
case J9BCinvokestatic: case J9BCinvokevirtual: case J9BCinvokespecial: case J9BCinvokeinterface:
case J9BCinvokedynamic: case J9BCinvokehandle: case J9BCinvokehandlegeneric:
case J9BCinvokestaticsplit: case J9BCinvokespecialsplit:
{
int32_t index = next2Bytes();
if (bc == J9BCinvokestaticsplit)
index = index | J9_STATIC_SPLIT_TABLE_INDEX_FLAG;
if (bc == J9BCinvokespecialsplit)
index = index | J9_SPECIAL_SPLIT_TABLE_INDEX_FLAG;
TR_J9VMBase *fej9 = (TR_J9VMBase *)_fe;
TR::Method *thisMethod = fej9->createMethod(_trMemory, method()->containingClass(), index);
// check return type
type = thisMethod->returnType();
if (type == TR::Float || type == TR::Double)
return bcIndex();
// check parameter types - in case an arg is only ldc'ed
int32_t argNum, elems = thisMethod->numberOfExplicitParameters();
for(argNum=0;argNum<elems;argNum++)
{
TR::DataType type = thisMethod->parmType(argNum);
if (type == TR::Float || type == TR::Double)
return bcIndex();
}
break;
}
default:
break;
}
return -1;
}
void
TR_J9ByteCodeIterator::printByteCodePrologue()
{
trfprintf(comp()->getOutFile(), "\n"
" +------------- Byte Code Index\n"
" | +-------------------- OpCode\n"
" | | +------------- First Field\n"
" | | | +------------- Branch Target\n"
" | | | | +------- Const Pool Index\n"
" | | | | | +------------- Constant\n"
" | | | | | |\n"
" V V V V V V\n");
}
void
TR_J9ByteCodeIterator::printByteCodeEpilogue()
{
trfprintf(comp()->getOutFile(), "\n\n"); comp()->getDebug()->printByteCodeAnnotations();
}
void
TR_J9ByteCodeIterator::printFirst(int32_t i)
{
trfprintf(comp()->getOutFile(), "%5i", i);
}
void
TR_J9ByteCodeIterator::printCPIndex(int32_t i)
{
trfprintf(comp()->getOutFile(), "%13s%5i", "", i);
}
void
TR_J9ByteCodeIterator::printConstant(int32_t i)
{
trfprintf(comp()->getOutFile(), "%11s%12i ", "", i);
}
void
TR_J9ByteCodeIterator::printConstant(double d)
{
trfprintf(comp()->getOutFile(), "%11s%12e ", "", d);
}
void
TR_J9ByteCodeIterator::printFirstAndConstant(int32_t i, int32_t j)
{
trfprintf(comp()->getOutFile(), "%5i%6s%12i ", i, "", j);
}
void
TR_J9ByteCodeIterator::printJumpIndex(int32_t offset)
{
trfprintf(comp()->getOutFile(), "%5i,%5d,%11s ", offset, offset + bcIndex(), "");
}
void
TR_J9ByteCodeIterator::printByteCode()
{
uint8_t opcode = nextByte(0);
trfprintf(comp()->getOutFile(), "\n %6i, %-15s ", bcIndex(), ((TR_J9VMBase *)fe())->getByteCodeName(opcode));
TR_J9ByteCode bc = convertOpCodeToByteCodeEnum(opcode);
switch (bc)
{
case J9BCbipush:
printConstant(nextByteSigned());
break;
case J9BCsipush:
printConstant(next2BytesSigned());
break;
case J9BCiload: case J9BClload: case J9BCfload: case J9BCdload: case J9BCaload:
case J9BCistore: case J9BClstore: case J9BCfstore: case J9BCdstore: case J9BCastore:
printFirst(nextByte());
break;
case J9BCiinc:
printFirstAndConstant(nextByte(), nextByteSigned(2));
break;
case J9BCinvokevirtual:
case J9BCinvokespecial:
case J9BCinvokestatic:
case J9BCinvokeinterface:
case J9BCinvokedynamic: // Could eventually need next3bytes
case J9BCinvokehandle:
case J9BCinvokehandlegeneric:
case J9BCinvokespecialsplit:
case J9BCinvokestaticsplit:
printFirst(next2Bytes());
break;
case J9BCgetstatic: case J9BCgetfield: case J9BCputstatic: case J9BCputfield:
case J9BCcheckcast: case J9BCinstanceof:
case J9BCnew: case J9BCanewarray:
case J9BCdefaultvalue: case J9BCwithfield:
printCPIndex(next2Bytes());
break;
case J9BCnewarray:
printCPIndex(nextByte());
break;
case J9BCmultianewarray:
printCPIndex(next2Bytes());
printConstant(nextByte(3));
break;
case J9BCifeq: case J9BCifne: case J9BCiflt: case J9BCifge: case J9BCifgt: case J9BCifle: case J9BCifnull: case J9BCifnonnull:
case J9BCificmpeq: case J9BCificmpne: case J9BCificmplt: case J9BCificmpge: case J9BCificmpgt: case J9BCificmple: case J9BCifacmpeq: case J9BCifacmpne:
case J9BCgoto:
printJumpIndex(next2BytesSigned());
break;
case J9BCgotow:
printJumpIndex(next4BytesSigned());
break;
default:
break;
}
}
const TR_J9ByteCode TR_J9ByteCodeIterator::_opCodeToByteCodeEnum[] =
{
/* 0 */ J9BCnop,
/* 1 */ J9BCaconstnull, J9BCiconstm1,
/* 3 */ J9BCiconst0, J9BCiconst1, J9BCiconst2, J9BCiconst3, J9BCiconst4, J9BCiconst5,
/* 9 */ J9BClconst0, J9BClconst1,
/* 11 */ J9BCfconst0, J9BCfconst1, J9BCfconst2,
/* 14 */ J9BCdconst0, J9BCdconst1,
/* 16 */ J9BCbipush, J9BCsipush,
/* 18 */ J9BCldc, J9BCldcw, J9BCldc2lw,
/* 21 */ J9BCiload, J9BClload, J9BCfload, J9BCdload, J9BCaload,
/* 26 */ J9BCiload0, J9BCiload1, J9BCiload2, J9BCiload3,
/* 30 */ J9BClload0, J9BClload1, J9BClload2, J9BClload3,
/* 34 */ J9BCfload0, J9BCfload1, J9BCfload2, J9BCfload3,
/* 38 */ J9BCdload0, J9BCdload1, J9BCdload2, J9BCdload3,
/* 42 */ J9BCaload0, J9BCaload1, J9BCaload2, J9BCaload3,
/* 46 */ J9BCiaload, J9BClaload, J9BCfaload, J9BCdaload, J9BCaaload, J9BCbaload, J9BCcaload, J9BCsaload,
/* 54 */ J9BCistore, J9BClstore, J9BCfstore, J9BCdstore, J9BCastore,
/* 59 */ J9BCistore0, J9BCistore1, J9BCistore2, J9BCistore3,
/* 63 */ J9BClstore0, J9BClstore1, J9BClstore2, J9BClstore3,
/* 67 */ J9BCfstore0, J9BCfstore1, J9BCfstore2, J9BCfstore3,
/* 71 */ J9BCdstore0, J9BCdstore1, J9BCdstore2, J9BCdstore3,
/* 75 */ J9BCastore0, J9BCastore1, J9BCastore2, J9BCastore3,
/* 79 */ J9BCiastore, J9BClastore, J9BCfastore, J9BCdastore, J9BCaastore, J9BCbastore, J9BCcastore, J9BCsastore,
/* 87 */ J9BCpop, J9BCpop2,
/* 89 */ J9BCdup, J9BCdupx1, J9BCdupx2, J9BCdup2, J9BCdup2x1, J9BCdup2x2,
/* 95 */ J9BCswap,
/* 96 */ J9BCiadd, J9BCladd, J9BCfadd, J9BCdadd,
/* 100 */ J9BCisub, J9BClsub, J9BCfsub, J9BCdsub,
/* 104 */ J9BCimul, J9BClmul, J9BCfmul, J9BCdmul,
/* 108 */ J9BCidiv, J9BCldiv, J9BCfdiv, J9BCddiv,
/* 112 */ J9BCirem, J9BClrem, J9BCfrem, J9BCdrem,
/* 116 */ J9BCineg, J9BClneg, J9BCfneg, J9BCdneg,
/* 120 */ J9BCishl, J9BClshl, J9BCishr, J9BClshr, J9BCiushr, J9BClushr,
/* 126 */ J9BCiand, J9BCland,
/* 128 */ J9BCior, J9BClor, J9BCixor, J9BClxor,
/* 132 */ J9BCiinc,
/* 133 */ J9BCi2l, J9BCi2f, J9BCi2d,
/* 136 */ J9BCl2i, J9BCl2f, J9BCl2d,
/* 139 */ J9BCf2i, J9BCf2l, J9BCf2d,
/* 142 */ J9BCd2i, J9BCd2l, J9BCd2f,
/* 145 */ J9BCi2b, J9BCi2c, J9BCi2s,
/* 148 */ J9BClcmp, J9BCfcmpl, J9BCfcmpg, J9BCdcmpl, J9BCdcmpg,
/* 153 */ J9BCifeq, J9BCifne, J9BCiflt, J9BCifge, J9BCifgt, J9BCifle,
/* 159 */ J9BCificmpeq, J9BCificmpne, J9BCificmplt, J9BCificmpge, J9BCificmpgt, J9BCificmple, J9BCifacmpeq, J9BCifacmpne,
/* 167 */ J9BCgoto, J9BCunknown, J9BCunknown,
/* 170 */ J9BCtableswitch, J9BClookupswitch,
/* 172 */ J9BCgenericReturn, J9BCgenericReturn, J9BCgenericReturn,
/* 175 */ J9BCgenericReturn, J9BCgenericReturn, J9BCgenericReturn,
/* 178 */ J9BCgetstatic, J9BCputstatic, J9BCgetfield, J9BCputfield,
/* 182 */ J9BCinvokevirtual, J9BCinvokespecial, J9BCinvokestatic, J9BCinvokeinterface, J9BCinvokedynamic,
/* 187 */ J9BCnew, J9BCnewarray, J9BCanewarray,
/* 190 */ J9BCarraylength,
/* 191 */ J9BCathrow,
/* 192 */ J9BCcheckcast,
/* 193 */ J9BCinstanceof,
/* 194 */ J9BCmonitorenter, J9BCmonitorexit,
/* 196 */ J9BCunknown,
/* 197 */ J9BCmultianewarray,
/* 198 */ J9BCifnull, J9BCifnonnull,
/* 200 */ J9BCgotow, J9BCunknown,
/* 202 */ J9BCbreakpoint,
/* 203 */ J9BCdefaultvalue,
/* 204 */ J9BCwithfield,
/* 205 */ J9BCunknown, J9BCunknown, J9BCunknown, J9BCunknown,
/* 209 */ J9BCunknown, J9BCunknown, J9BCunknown, J9BCunknown,
/* 213 */ J9BCiincw, J9BCunknown,
/* 215 - JBaload0getfield */ J9BCaload0,
/* 216 - JBnewdup */ J9BCnew,
/* 217 */ J9BCiloadw, J9BClloadw, J9BCfloadw, J9BCdloadw, J9BCaloadw,
/* 222 */ J9BCistorew, J9BClstorew, J9BCfstorew, J9BCdstorew, J9BCastorew,
/* 227 */ J9BCunknown,
/* 228 */ J9BCgenericReturn, J9BCgenericReturn, J9BCunknown, J9BCinvokeinterface2,
/* 232 */ J9BCinvokehandle, J9BCinvokehandlegeneric,
/* 234 */ J9BCinvokestaticsplit, J9BCinvokespecialsplit,
/* 236 */ J9BCReturnC, J9BCReturnS, J9BCReturnB, J9BCReturnZ,
/* 240 */ J9BCunknown, J9BCunknown, J9BCunknown, J9BCunknown,
/* 244 */ J9BCunknown, J9BCunknown, J9BCunknown, J9BCunknown, J9BCunknown,
/* 249 */ J9BCldc2dw,
/* 250 */ J9BCunknown, J9BCunknown, J9BCunknown, J9BCunknown, J9BCunknown, J9BCunknown
};
const uint8_t TR_J9ByteCodeIterator::_byteCodeFlags[] =
{
// FLAGS | SIZE,
0x01, // J9BCnop
0x01, // J9BCaconstnull
0x01, // J9BCiconstm1
0x01, // J9BCiconst0
0x01, // J9BCiconst1
0x01, // J9BCiconst2
0x01, // J9BCiconst3
0x01, // J9BCiconst4
0x01, // J9BCiconst5
0x01, // J9BClconst0
0x01, // J9BClconst1
0x01, // J9BCfconst0
0x01, // J9BCfconst1
0x01, // J9BCfconst2
0x01, // J9BCdconst0
0x01, // J9BCdconst1
0x02, // J9BCbipush
0x03, // J9BCsipush
0x02, // J9BCldc
0x03, // J9BCldcw
0x03, // J9BCldc2lw
0x03, // J9BCldc2dw
0x02, // J9BCiload
0x02, // J9BClload
0x02, // J9BCfload
0x02, // J9BCdload
0x02, // J9BCaload
0x01, // J9BCiload0
0x01, // J9BCiload1
0x01, // J9BCiload2
0x01, // J9BCiload3
0x01, // J9BClload0
0x01, // J9BClload1
0x01, // J9BClload2
0x01, // J9BClload3
0x01, // J9BCfload0
0x01, // J9BCfload1
0x01, // J9BCfload2
0x01, // J9BCfload3
0x01, // J9BCdload0
0x01, // J9BCdload1
0x01, // J9BCdload2
0x01, // J9BCdload3
0x01, // J9BCaload0
0x01, // J9BCaload1
0x01, // J9BCaload2
0x01, // J9BCaload3
0x01, // J9BCiaload
0x01, // J9BClaload
0x01, // J9BCfaload
0x01, // J9BCdaload
0x01, // J9BCaaload
0x01, // J9BCbaload
0x01, // J9BCcaload
0x01, // J9BCsaload
0x03, // J9BCiloadw
0x03, // J9BClloadw
0x03, // J9BCfloadw
0x03, // J9BCdloadw
0x03, // J9BCaloadw
0x02, // J9BCistore
0x02, // J9BClstore
0x02, // J9BCfstore
0x02, // J9BCdstore
0x02, // J9BCastore
0x03, // J9BCistorew
0x03, // J9BClstorew
0x03, // J9BCfstorew
0x03, // J9BCdstorew
0x03, // J9BCastorew
0x01, // J9BCistore0
0x01, // J9BCistore1
0x01, // J9BCistore2
0x01, // J9BCistore3
0x01, // J9BClstore0
0x01, // J9BClstore1
0x01, // J9BClstore2
0x01, // J9BClstore3
0x01, // J9BCfstore0
0x01, // J9BCfstore1
0x01, // J9BCfstore2
0x01, // J9BCfstore3
0x01, // J9BCdstore0
0x01, // J9BCdstore1
0x01, // J9BCdstore2
0x01, // J9BCdstore3
0x01, // J9BCastore0
0x01, // J9BCastore1
0x01, // J9BCastore2
0x01, // J9BCastore3
0x01, // J9BCiastore
0x01, // J9BClastore
0x01, // J9BCfastore
0x01, // J9BCdastore
0x01, // J9BCaastore
0x01, // J9BCbastore
0x01, // J9BCcastore
0x01, // J9BCsastore
0x01, // J9BCpop
0x01, // J9BCpop2
0x01, // J9BCdup
0x01, // J9BCdupx1
0x01, // J9BCdupx2
0x01, // J9BCdup2
0x01, // J9BCdup2x1
0x01, // J9BCdup2x2
0x01, // J9BCswap
0x01, // J9BCiadd
0x01, // J9BCladd
0x01, // J9BCfadd
0x01, // J9BCdadd
0x01, // J9BCisub
0x01, // J9BClsub
0x01, // J9BCfsub
0x01, // J9BCdsub
0x01, // J9BCimul
0x01, // J9BClmul
0x01, // J9BCfmul
0x01, // J9BCdmul
0x01, // J9BCidiv
0x01, // J9BCldiv
0x01, // J9BCfdiv
0x01, // J9BCddiv
0x01, // J9BCirem
0x01, // J9BClrem
0x01, // J9BCfrem
0x01, // J9BCdrem
0x01, // J9BCineg
0x01, // J9BClneg
0x01, // J9BCfneg
0x01, // J9BCdneg
0x01, // J9BCishl
0x01, // J9BClshl
0x01, // J9BCishr
0x01, // J9BClshr
0x01, // J9BCiushr
0x01, // J9BClushr
0x01, // J9BCiand
0x01, // J9BCland
0x01, // J9BCior
0x01, // J9BClor
0x01, // J9BCixor
0x01, // J9BClxor
0x03, // J9BCiinc
0x05, // J9BCiincw
0x01, // J9BCi2l
0x01, // J9BCi2f
0x01, // J9BCi2d
0x01, // J9BCl2i
0x01, // J9BCl2f
0x01, // J9BCl2d
0x01, // J9BCf2i
0x01, // J9BCf2l
0x01, // J9BCf2d
0x01, // J9BCd2i
0x01, // J9BCd2l
0x01, // J9BCd2f
0x01, // J9BCi2b
0x01, // J9BCi2c
0x01, // J9BCi2s
0x01, // J9BClcmp
0x01, // J9BCfcmpl
0x01, // J9BCfcmpg
0x01, // J9BCdcmpl
0x01, // J9BCdcmpg
TwoByteRelativeBranch | 0x03, // J9BCifeq
TwoByteRelativeBranch | 0x03, // J9BCifne
TwoByteRelativeBranch | 0x03, // J9BCiflt
TwoByteRelativeBranch | 0x03, // J9BCifge
TwoByteRelativeBranch | 0x03, // J9BCifgt
TwoByteRelativeBranch | 0x03, // J9BCifle
TwoByteRelativeBranch | 0x03, // J9BCificmpeq
TwoByteRelativeBranch | 0x03, // J9BCificmpne
TwoByteRelativeBranch | 0x03, // J9BCificmplt
TwoByteRelativeBranch | 0x03, // J9BCificmpge
TwoByteRelativeBranch | 0x03, // J9BCificmpgt
TwoByteRelativeBranch | 0x03, // J9BCificmple
TwoByteRelativeBranch | 0x03, // J9BCifacmpeq
TwoByteRelativeBranch | 0x03, // J9BCifacmpne
TwoByteRelativeBranch | 0x03, // J9BCifnull
TwoByteRelativeBranch | 0x03, // J9BCifnonnull
TwoByteRelativeBranch | 0x03, // J9BCgoto
FourByteRelativeBranch | 0x05, // J9BCgotow
0x00, // J9BCtableswitch
0x00, // J9BClookupswitch
0x01, // J9BCgenericReturn
0x03, // J9BCgetstatic
0x03, // J9BCputstatic
0x03, // J9BCgetfield
0x03, // J9BCputfield
0x03, // J9BCinvokevirtual
0x03, // J9BCinvokespecial
0x03, // J9BCinvokestatic
0x03, // J9BCinvokeinterface
0x03, // J9BCinvokedynamic
0x03, // J9BCinvokehandle
0x03, // J9BCinvokehandlegeneric
0x03, // J9BCinvokespecialsplit
0x01, // J9BCReturnC
0x01, // J9BCReturnS
0x01, // J9BCReturnB
0x01, // J9BCReturnZ
0x03, // J9BCinvokestaticsplit
0x01, // J9BCinvokeinterface2
0x03, // J9BCnew
0x02, // J9BCnewarray
0x03, // J9BCanewarray
0x04, // J9BCmultianewarray
0x01, // J9BCarraylength
0x01, // J9BCathrow
0x03, // J9BCcheckcast
0x03, // J9BCinstanceof
0x01, // J9BCmonitorenter
0x01, // J9BCmonitorexit
0x00, // J9BCwide
0x01, // J9BCasyncCheck --- TODO: Is this the right size?
0x03, // J9BCdefaultvalue
0x03, // J9BCwithfield
0x01, // J9BCbreakpoint --- TODO: Is this the right size?
0x01, // BCunknown
};
const uint8_t TR_J9ByteCodeIterator::_estimatedCodeSize[] =
{
0, // J9BCnop
1, // J9BCaconstnull
1, // J9BCiconstm1
1, // J9BCiconst0
1, // J9BCiconst1
1, // J9BCiconst2
1, // J9BCiconst3
1, // J9BCiconst4
1, // J9BCiconst5
2, // J9BClconst0
2, // J9BClconst1
1, // J9BCfconst0
1, // J9BCfconst1
2, // J9BCfconst2
1, // J9BCdconst0
1, // J9BCdconst1
1, // J9BCbipush
1, // J9BCsipush
1, // J9BCldc
1, // J9BCldcw
2, // J9BCldc2lw
2, // J9BCldc2dw
1, // J9BCiload
2, // J9BClload
1, // J9BCfload
1, // J9BCdload
1, // J9BCaload
1, // J9BCiload0
1, // J9BCiload1
1, // J9BCiload2
1, // J9BCiload3
2, // J9BClload0
2, // J9BClload1
2, // J9BClload2
2, // J9BClload3
1, // J9BCfload0
1, // J9BCfload1
1, // J9BCfload2
1, // J9BCfload3
1, // J9BCdload0
1, // J9BCdload1
1, // J9BCdload2
1, // J9BCdload3
1, // J9BCaload0
1, // J9BCaload1
1, // J9BCaload2
1, // J9BCaload3
5, // J9BCiaload
6, // J9BClaload
5, // J9BCfaload
5, // J9BCdaload
5, // J9BCaaload
5, // J9BCbaload
5, // J9BCcaload
5, // J9BCsaload
1, // J9BCiloadw
2, // J9BClloadw
1, // J9BCfloadw
1, // J9BCdloadw
1, // J9BCaloadw
1, // J9BCistore
2, // J9BClstore
1, // J9BCfstore
1, // J9BCdstore
1, // J9BCastore
1, // J9BCistorew
2, // J9BClstorew
1, // J9BCfstorew
1, // J9BCdstorew
1, // J9BCastorew
1, // J9BCistore0
1, // J9BCistore1
1, // J9BCistore2
1, // J9BCistore3
2, // J9BClstore0
2, // J9BClstore1
2, // J9BClstore2
2, // J9BClstore3
1, // J9BCfstore0
1, // J9BCfstore1
1, // J9BCfstore2
1, // J9BCfstore3
1, // J9BCdstore0
1, // J9BCdstore1
1, // J9BCdstore2
1, // J9BCdstore3
1, // J9BCastore0
1, // J9BCastore1
1, // J9BCastore2
1, // J9BCastore3
5, // J9BCiastore
6, // J9BClastore
5, // J9BCfastore
5, // J9BCdastore
5, // J9BCaastore
5, // J9BCbastore
5, // J9BCcastore
5, // J9BCsastore
0, // J9BCpop
0, // J9BCpop2
0, // J9BCdup
0, // J9BCdupx1
0, // J9BCdupx2
0, // J9BCdup2
0, // J9BCdup2x1
0, // J9BCdup2x2
0, // J9BCswap
1, // J9BCiadd
2, // J9BCladd
1, // J9BCfadd
1, // J9BCdadd
1, // J9BCisub
2, // J9BClsub
1, // J9BCfsub
1, // J9BCdsub
1, // J9BCimul
2, // J9BClmul
1, // J9BCfmul
1, // J9BCdmul
1, // J9BCidiv
2, // J9BCldiv
3, // J9BCfdiv
3, // J9BCddiv
1, // J9BCirem
2, // J9BClrem
3, // J9BCfrem
3, // J9BCdrem
1, // J9BCineg
2, // J9BClneg
1, // J9BCfneg
1, // J9BCdneg
1, // J9BCishl
2, // J9BClshl
1, // J9BCishr
2, // J9BClshr
1, // J9BCiushr
2, // J9BClushr
1, // J9BCiand
2, // J9BCland
1, // J9BCior
2, // J9BClor
1, // J9BCixor
2, // J9BClxor
3, // J9BCiinc
3, // J9BCiincw
2, // J9BCi2l
2, // J9BCi2f
2, // J9BCi2d
1, // J9BCl2i
2, // J9BCl2f
2, // J9BCl2d
4, // J9BCf2i
4, // J9BCf2l
1, // J9BCf2d
4, // J9BCd2i
4, // J9BCd2l
2, // J9BCd2f
1, // J9BCi2b
1, // J9BCi2c
1, // J9BCi2s
8, // J9BClcmp
5, // J9BCfcmpl
5, // J9BCfcmpg
5, // J9BCdcmpl
5, // J9BCdcmpg
1, // J9BCifeq
1, // J9BCifne
1, // J9BCiflt
1, // J9BCifge
1, // J9BCifgt
1, // J9BCifle
2, // J9BCificmpeq
2, // J9BCificmpne
2, // J9BCificmplt
2, // J9BCificmpge
2, // J9BCificmpgt
2, // J9BCificmple
2, // J9BCifacmpeq
2, // J9BCifacmpne
2, // J9BCifnull
2, // J9BCifnonnull
1, // J9BCgoto
1, // J9BCgotow
10, // J9BCtableswitch
10, // J9BClookupswitch
25, // J9BCgenericReturn
1, // J9BCgetstatic
1, // J9BCputstatic
1, // J9BCgetfield
1, // J9BCputfield
6, // J9BCinvokevirtual
6, // J9BCinvokespecial
4, // J9BCinvokestatic
11, // J9BCinvokeinterface
20, // J9BCinvokedynamic
20, // J9BCinvokehandle
30, // J9BCinvokehandlegeneric
6, // J9BCinvokespecialsplit
25, // J9BCReturnC
25, // J9BCReturnS
25, // J9BCReturnB
25, // J9BCReturnZ
4, // J9BCinvokestaticsplit
0, // J9BCinvokeinterface2
1, // J9BCnew
1, // J9BCnewarray
1, // J9BCanewarray
1, // J9BCmultianewarray
2, // J9BCarraylength
1, // J9BCathrow
5, // J9BCcheckcast
5, // J9BCinstanceof
25, // J9BCmonitorenter
25, // J9BCmonitorexit
0, // J9BCwide
0, // J9BCasyncCheck
1, // J9BCdefaultvalue
1, // J9BCwithfield
0, // J9BCunknown
};
// == != < >= > <=
TR::ILOpCodes TR_J9ByteCodeIterator::_lcmpOps[] = { TR::iflcmpeq, TR::iflcmpne, TR::iflcmplt, TR::iflcmpge, TR::iflcmpgt, TR::iflcmple };
TR::ILOpCodes TR_J9ByteCodeIterator::_fcmplOps[] = { TR::iffcmpeq, TR::iffcmpneu, TR::iffcmpltu, TR::iffcmpge, TR::iffcmpgt, TR::iffcmpleu };
TR::ILOpCodes TR_J9ByteCodeIterator::_fcmpgOps[] = { TR::iffcmpeq, TR::iffcmpneu, TR::iffcmplt, TR::iffcmpgeu, TR::iffcmpgtu, TR::iffcmple };
TR::ILOpCodes TR_J9ByteCodeIterator::_dcmplOps[] = { TR::ifdcmpeq, TR::ifdcmpneu, TR::ifdcmpltu, TR::ifdcmpge, TR::ifdcmpgt, TR::ifdcmpleu };
TR::ILOpCodes TR_J9ByteCodeIterator::_dcmpgOps[] = { TR::ifdcmpeq, TR::ifdcmpneu, TR::ifdcmplt, TR::ifdcmpgeu, TR::ifdcmpgtu, TR::ifdcmple };