/* * Copyright (c) 1997, 2025, Oracle and/or its affiliates. All rights reserved. * 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. * */ #include "interpreter/bytecodes.hpp" #include "memory/resourceArea.hpp" #include "oops/method.hpp" #include "utilities/align.hpp" #include "utilities/bytes.hpp" #define JVM_BYTECODES_DO(def) \ def(_fast_agetfield , "fast_agetfield" , "bJJ" , nullptr , T_OBJECT , 0, true , _getfield ) \ def(_fast_bgetfield , "fast_bgetfield" , "bJJ" , nullptr , T_INT , 0, true , _getfield ) \ def(_fast_cgetfield , "fast_cgetfield" , "bJJ" , nullptr , T_CHAR , 0, true , _getfield ) \ def(_fast_dgetfield , "fast_dgetfield" , "bJJ" , nullptr , T_DOUBLE , 0, true , _getfield ) \ def(_fast_fgetfield , "fast_fgetfield" , "bJJ" , nullptr , T_FLOAT , 0, true , _getfield ) \ def(_fast_igetfield , "fast_igetfield" , "bJJ" , nullptr , T_INT , 0, true , _getfield ) \ def(_fast_lgetfield , "fast_lgetfield" , "bJJ" , nullptr , T_LONG , 0, true , _getfield ) \ def(_fast_sgetfield , "fast_sgetfield" , "bJJ" , nullptr , T_SHORT , 0, true , _getfield ) \ \ def(_fast_aputfield , "fast_aputfield" , "bJJ" , nullptr , T_OBJECT , 0, true , _putfield ) \ def(_fast_bputfield , "fast_bputfield" , "bJJ" , nullptr , T_INT , 0, true , _putfield ) \ def(_fast_zputfield , "fast_zputfield" , "bJJ" , nullptr , T_INT , 0, true , _putfield ) \ def(_fast_cputfield , "fast_cputfield" , "bJJ" , nullptr , T_CHAR , 0, true , _putfield ) \ def(_fast_dputfield , "fast_dputfield" , "bJJ" , nullptr , T_DOUBLE , 0, true , _putfield ) \ def(_fast_fputfield , "fast_fputfield" , "bJJ" , nullptr , T_FLOAT , 0, true , _putfield ) \ def(_fast_iputfield , "fast_iputfield" , "bJJ" , nullptr , T_INT , 0, true , _putfield ) \ def(_fast_lputfield , "fast_lputfield" , "bJJ" , nullptr , T_LONG , 0, true , _putfield ) \ def(_fast_sputfield , "fast_sputfield" , "bJJ" , nullptr , T_SHORT , 0, true , _putfield ) \ \ def(_fast_aload_0 , "fast_aload_0" , "b" , nullptr , T_OBJECT , 1, true , _aload_0 ) \ def(_fast_iaccess_0 , "fast_iaccess_0" , "b_JJ" , nullptr , T_INT , 1, true , _aload_0 ) \ def(_fast_aaccess_0 , "fast_aaccess_0" , "b_JJ" , nullptr , T_OBJECT , 1, true , _aload_0 ) \ def(_fast_faccess_0 , "fast_faccess_0" , "b_JJ" , nullptr , T_OBJECT , 1, true , _aload_0 ) \ \ def(_fast_iload , "fast_iload" , "bi" , nullptr , T_INT , 1, false, _iload ) \ def(_fast_iload2 , "fast_iload2" , "bi_i" , nullptr , T_INT , 2, false, _iload ) \ def(_fast_icaload , "fast_icaload" , "bi_" , nullptr , T_INT , 0, false, _iload ) \ \ def(_fast_invokevfinal , "fast_invokevfinal" , "bJJ" , nullptr , T_ILLEGAL, -1, true , _invokevirtual ) \ def(_fast_linearswitch , "fast_linearswitch" , "" , nullptr , T_VOID , -1, false, _lookupswitch ) \ def(_fast_binaryswitch , "fast_binaryswitch" , "" , nullptr , T_VOID , -1, false, _lookupswitch ) \ \ def(_fast_aldc , "fast_aldc" , "bj" , nullptr , T_OBJECT , 1, true , _ldc ) \ def(_fast_aldc_w , "fast_aldc_w" , "bJJ" , nullptr , T_OBJECT , 1, true , _ldc_w ) \ \ def(_return_register_finalizer , "return_register_finalizer" , "b" , nullptr , T_VOID , 0, true , _return ) \ \ def(_invokehandle , "invokehandle" , "bJJ" , nullptr , T_ILLEGAL, -1, true , _invokevirtual ) \ \ def(_nofast_getfield , "nofast_getfield" , "bJJ" , nullptr , T_ILLEGAL, 0, true , _getfield ) \ def(_nofast_putfield , "nofast_putfield" , "bJJ" , nullptr , T_ILLEGAL, -2, true , _putfield ) \ def(_nofast_aload_0 , "nofast_aload_0" , "b" , nullptr , T_OBJECT , 1, true , _aload_0 ) \ def(_nofast_iload , "nofast_iload" , "bi" , nullptr , T_INT , 1, false, _iload ) \ \ def(_shouldnotreachhere , "_shouldnotreachhere" , "b" , nullptr , T_VOID , 0, false, _shouldnotreachhere) #define BYTECODES_DO(def) \ def(_nop , "nop" , "b" , nullptr , T_VOID , 0, false, _nop ) \ def(_aconst_null , "aconst_null" , "b" , nullptr , T_OBJECT , 1, false, _aconst_null ) \ def(_iconst_m1 , "iconst_m1" , "b" , nullptr , T_INT , 1, false, _iconst_m1 ) \ def(_iconst_0 , "iconst_0" , "b" , nullptr , T_INT , 1, false, _iconst_0 ) \ def(_iconst_1 , "iconst_1" , "b" , nullptr , T_INT , 1, false, _iconst_1 ) \ def(_iconst_2 , "iconst_2" , "b" , nullptr , T_INT , 1, false, _iconst_2 ) \ def(_iconst_3 , "iconst_3" , "b" , nullptr , T_INT , 1, false, _iconst_3 ) \ def(_iconst_4 , "iconst_4" , "b" , nullptr , T_INT , 1, false, _iconst_4 ) \ def(_iconst_5 , "iconst_5" , "b" , nullptr , T_INT , 1, false, _iconst_5 ) \ def(_lconst_0 , "lconst_0" , "b" , nullptr , T_LONG , 2, false, _lconst_0 ) \ def(_lconst_1 , "lconst_1" , "b" , nullptr , T_LONG , 2, false, _lconst_1 ) \ def(_fconst_0 , "fconst_0" , "b" , nullptr , T_FLOAT , 1, false, _fconst_0 ) \ def(_fconst_1 , "fconst_1" , "b" , nullptr , T_FLOAT , 1, false, _fconst_1 ) \ def(_fconst_2 , "fconst_2" , "b" , nullptr , T_FLOAT , 1, false, _fconst_2 ) \ def(_dconst_0 , "dconst_0" , "b" , nullptr , T_DOUBLE , 2, false, _dconst_0 ) \ def(_dconst_1 , "dconst_1" , "b" , nullptr , T_DOUBLE , 2, false, _dconst_1 ) \ def(_bipush , "bipush" , "bc" , nullptr , T_INT , 1, false, _bipush ) \ def(_sipush , "sipush" , "bcc" , nullptr , T_INT , 1, false, _sipush ) \ def(_ldc , "ldc" , "bk" , nullptr , T_ILLEGAL, 1, true , _ldc ) \ def(_ldc_w , "ldc_w" , "bkk" , nullptr , T_ILLEGAL, 1, true , _ldc_w ) \ def(_ldc2_w , "ldc2_w" , "bkk" , nullptr , T_ILLEGAL, 2, true , _ldc2_w ) \ def(_iload , "iload" , "bi" , "wbii" , T_INT , 1, false, _iload ) \ def(_lload , "lload" , "bi" , "wbii" , T_LONG , 2, false, _lload ) \ def(_fload , "fload" , "bi" , "wbii" , T_FLOAT , 1, false, _fload ) \ def(_dload , "dload" , "bi" , "wbii" , T_DOUBLE , 2, false, _dload ) \ def(_aload , "aload" , "bi" , "wbii" , T_OBJECT , 1, false, _aload ) \ def(_iload_0 , "iload_0" , "b" , nullptr , T_INT , 1, false, _iload_0 ) \ def(_iload_1 , "iload_1" , "b" , nullptr , T_INT , 1, false, _iload_1 ) \ def(_iload_2 , "iload_2" , "b" , nullptr , T_INT , 1, false, _iload_2 ) \ def(_iload_3 , "iload_3" , "b" , nullptr , T_INT , 1, false, _iload_3 ) \ def(_lload_0 , "lload_0" , "b" , nullptr , T_LONG , 2, false, _lload_0 ) \ def(_lload_1 , "lload_1" , "b" , nullptr , T_LONG , 2, false, _lload_1 ) \ def(_lload_2 , "lload_2" , "b" , nullptr , T_LONG , 2, false, _lload_2 ) \ def(_lload_3 , "lload_3" , "b" , nullptr , T_LONG , 2, false, _lload_3 ) \ def(_fload_0 , "fload_0" , "b" , nullptr , T_FLOAT , 1, false, _fload_0 ) \ def(_fload_1 , "fload_1" , "b" , nullptr , T_FLOAT , 1, false, _fload_1 ) \ def(_fload_2 , "fload_2" , "b" , nullptr , T_FLOAT , 1, false, _fload_2 ) \ def(_fload_3 , "fload_3" , "b" , nullptr , T_FLOAT , 1, false, _fload_3 ) \ def(_dload_0 , "dload_0" , "b" , nullptr , T_DOUBLE , 2, false, _dload_0 ) \ def(_dload_1 , "dload_1" , "b" , nullptr , T_DOUBLE , 2, false, _dload_1 ) \ def(_dload_2 , "dload_2" , "b" , nullptr , T_DOUBLE , 2, false, _dload_2 ) \ def(_dload_3 , "dload_3" , "b" , nullptr , T_DOUBLE , 2, false, _dload_3 ) \ def(_aload_0 , "aload_0" , "b" , nullptr , T_OBJECT , 1, true , _aload_0 ) \ def(_aload_1 , "aload_1" , "b" , nullptr , T_OBJECT , 1, false, _aload_1 ) \ def(_aload_2 , "aload_2" , "b" , nullptr , T_OBJECT , 1, false, _aload_2 ) \ def(_aload_3 , "aload_3" , "b" , nullptr , T_OBJECT , 1, false, _aload_3 ) \ def(_iaload , "iaload" , "b" , nullptr , T_INT , -1, true , _iaload ) \ def(_laload , "laload" , "b" , nullptr , T_LONG , 0, true , _laload ) \ def(_faload , "faload" , "b" , nullptr , T_FLOAT , -1, true , _faload ) \ def(_daload , "daload" , "b" , nullptr , T_DOUBLE , 0, true , _daload ) \ def(_aaload , "aaload" , "b" , nullptr , T_OBJECT , -1, true , _aaload ) \ def(_baload , "baload" , "b" , nullptr , T_INT , -1, true , _baload ) \ def(_caload , "caload" , "b" , nullptr , T_INT , -1, true , _caload ) \ def(_saload , "saload" , "b" , nullptr , T_INT , -1, true , _saload ) \ def(_istore , "istore" , "bi" , "wbii" , T_VOID , -1, false, _istore ) \ def(_lstore , "lstore" , "bi" , "wbii" , T_VOID , -2, false, _lstore ) \ def(_fstore , "fstore" , "bi" , "wbii" , T_VOID , -1, false, _fstore ) \ def(_dstore , "dstore" , "bi" , "wbii" , T_VOID , -2, false, _dstore ) \ def(_astore , "astore" , "bi" , "wbii" , T_VOID , -1, false, _astore ) \ def(_istore_0 , "istore_0" , "b" , nullptr , T_VOID , -1, false, _istore_0 ) \ def(_istore_1 , "istore_1" , "b" , nullptr , T_VOID , -1, false, _istore_1 ) \ def(_istore_2 , "istore_2" , "b" , nullptr , T_VOID , -1, false, _istore_2 ) \ def(_istore_3 , "istore_3" , "b" , nullptr , T_VOID , -1, false, _istore_3 ) \ def(_lstore_0 , "lstore_0" , "b" , nullptr , T_VOID , -2, false, _lstore_0 ) \ def(_lstore_1 , "lstore_1" , "b" , nullptr , T_VOID , -2, false, _lstore_1 ) \ def(_lstore_2 , "lstore_2" , "b" , nullptr , T_VOID , -2, false, _lstore_2 ) \ def(_lstore_3 , "lstore_3" , "b" , nullptr , T_VOID , -2, false, _lstore_3 ) \ def(_fstore_0 , "fstore_0" , "b" , nullptr , T_VOID , -1, false, _fstore_0 ) \ def(_fstore_1 , "fstore_1" , "b" , nullptr , T_VOID , -1, false, _fstore_1 ) \ def(_fstore_2 , "fstore_2" , "b" , nullptr , T_VOID , -1, false, _fstore_2 ) \ def(_fstore_3 , "fstore_3" , "b" , nullptr , T_VOID , -1, false, _fstore_3 ) \ def(_dstore_0 , "dstore_0" , "b" , nullptr , T_VOID , -2, false, _dstore_0 ) \ def(_dstore_1 , "dstore_1" , "b" , nullptr , T_VOID , -2, false, _dstore_1 ) \ def(_dstore_2 , "dstore_2" , "b" , nullptr , T_VOID , -2, false, _dstore_2 ) \ def(_dstore_3 , "dstore_3" , "b" , nullptr , T_VOID , -2, false, _dstore_3 ) \ def(_astore_0 , "astore_0" , "b" , nullptr , T_VOID , -1, false, _astore_0 ) \ def(_astore_1 , "astore_1" , "b" , nullptr , T_VOID , -1, false, _astore_1 ) \ def(_astore_2 , "astore_2" , "b" , nullptr , T_VOID , -1, false, _astore_2 ) \ def(_astore_3 , "astore_3" , "b" , nullptr , T_VOID , -1, false, _astore_3 ) \ def(_iastore , "iastore" , "b" , nullptr , T_VOID , -3, true , _iastore ) \ def(_lastore , "lastore" , "b" , nullptr , T_VOID , -4, true , _lastore ) \ def(_fastore , "fastore" , "b" , nullptr , T_VOID , -3, true , _fastore ) \ def(_dastore , "dastore" , "b" , nullptr , T_VOID , -4, true , _dastore ) \ def(_aastore , "aastore" , "b" , nullptr , T_VOID , -3, true , _aastore ) \ def(_bastore , "bastore" , "b" , nullptr , T_VOID , -3, true , _bastore ) \ def(_castore , "castore" , "b" , nullptr , T_VOID , -3, true , _castore ) \ def(_sastore , "sastore" , "b" , nullptr , T_VOID , -3, true , _sastore ) \ def(_pop , "pop" , "b" , nullptr , T_VOID , -1, false, _pop ) \ def(_pop2 , "pop2" , "b" , nullptr , T_VOID , -2, false, _pop2 ) \ def(_dup , "dup" , "b" , nullptr , T_VOID , 1, false, _dup ) \ def(_dup_x1 , "dup_x1" , "b" , nullptr , T_VOID , 1, false, _dup_x1 ) \ def(_dup_x2 , "dup_x2" , "b" , nullptr , T_VOID , 1, false, _dup_x2 ) \ def(_dup2 , "dup2" , "b" , nullptr , T_VOID , 2, false, _dup2 ) \ def(_dup2_x1 , "dup2_x1" , "b" , nullptr , T_VOID , 2, false, _dup2_x1 ) \ def(_dup2_x2 , "dup2_x2" , "b" , nullptr , T_VOID , 2, false, _dup2_x2 ) \ def(_swap , "swap" , "b" , nullptr , T_VOID , 0, false, _swap ) \ def(_iadd , "iadd" , "b" , nullptr , T_INT , -1, false, _iadd ) \ def(_ladd , "ladd" , "b" , nullptr , T_LONG , -2, false, _ladd ) \ def(_fadd , "fadd" , "b" , nullptr , T_FLOAT , -1, false, _fadd ) \ def(_dadd , "dadd" , "b" , nullptr , T_DOUBLE , -2, false, _dadd ) \ def(_isub , "isub" , "b" , nullptr , T_INT , -1, false, _isub ) \ def(_lsub , "lsub" , "b" , nullptr , T_LONG , -2, false, _lsub ) \ def(_fsub , "fsub" , "b" , nullptr , T_FLOAT , -1, false, _fsub ) \ def(_dsub , "dsub" , "b" , nullptr , T_DOUBLE , -2, false, _dsub ) \ def(_imul , "imul" , "b" , nullptr , T_INT , -1, false, _imul ) \ def(_lmul , "lmul" , "b" , nullptr , T_LONG , -2, false, _lmul ) \ def(_fmul , "fmul" , "b" , nullptr , T_FLOAT , -1, false, _fmul ) \ def(_dmul , "dmul" , "b" , nullptr , T_DOUBLE , -2, false, _dmul ) \ def(_idiv , "idiv" , "b" , nullptr , T_INT , -1, true , _idiv ) \ def(_ldiv , "ldiv" , "b" , nullptr , T_LONG , -2, true , _ldiv ) \ def(_fdiv , "fdiv" , "b" , nullptr , T_FLOAT , -1, false, _fdiv ) \ def(_ddiv , "ddiv" , "b" , nullptr , T_DOUBLE , -2, false, _ddiv ) \ def(_irem , "irem" , "b" , nullptr , T_INT , -1, true , _irem ) \ def(_lrem , "lrem" , "b" , nullptr , T_LONG , -2, true , _lrem ) \ def(_frem , "frem" , "b" , nullptr , T_FLOAT , -1, false, _frem ) \ def(_drem , "drem" , "b" , nullptr , T_DOUBLE , -2, false, _drem ) \ def(_ineg , "ineg" , "b" , nullptr , T_INT , 0, false, _ineg ) \ def(_lneg , "lneg" , "b" , nullptr , T_LONG , 0, false, _lneg ) \ def(_fneg , "fneg" , "b" , nullptr , T_FLOAT , 0, false, _fneg ) \ def(_dneg , "dneg" , "b" , nullptr , T_DOUBLE , 0, false, _dneg ) \ def(_ishl , "ishl" , "b" , nullptr , T_INT , -1, false, _ishl ) \ def(_lshl , "lshl" , "b" , nullptr , T_LONG , -1, false, _lshl ) \ def(_ishr , "ishr" , "b" , nullptr , T_INT , -1, false, _ishr ) \ def(_lshr , "lshr" , "b" , nullptr , T_LONG , -1, false, _lshr ) \ def(_iushr , "iushr" , "b" , nullptr , T_INT , -1, false, _iushr ) \ def(_lushr , "lushr" , "b" , nullptr , T_LONG , -1, false, _lushr ) \ def(_iand , "iand" , "b" , nullptr , T_INT , -1, false, _iand ) \ def(_land , "land" , "b" , nullptr , T_LONG , -2, false, _land ) \ def(_ior , "ior" , "b" , nullptr , T_INT , -1, false, _ior ) \ def(_lor , "lor" , "b" , nullptr , T_LONG , -2, false, _lor ) \ def(_ixor , "ixor" , "b" , nullptr , T_INT , -1, false, _ixor ) \ def(_lxor , "lxor" , "b" , nullptr , T_LONG , -2, false, _lxor ) \ def(_iinc , "iinc" , "bic" , "wbiicc", T_VOID , 0, false, _iinc ) \ def(_i2l , "i2l" , "b" , nullptr , T_LONG , 1, false, _i2l ) \ def(_i2f , "i2f" , "b" , nullptr , T_FLOAT , 0, false, _i2f ) \ def(_i2d , "i2d" , "b" , nullptr , T_DOUBLE , 1, false, _i2d ) \ def(_l2i , "l2i" , "b" , nullptr , T_INT , -1, false, _l2i ) \ def(_l2f , "l2f" , "b" , nullptr , T_FLOAT , -1, false, _l2f ) \ def(_l2d , "l2d" , "b" , nullptr , T_DOUBLE , 0, false, _l2d ) \ def(_f2i , "f2i" , "b" , nullptr , T_INT , 0, false, _f2i ) \ def(_f2l , "f2l" , "b" , nullptr , T_LONG , 1, false, _f2l ) \ def(_f2d , "f2d" , "b" , nullptr , T_DOUBLE , 1, false, _f2d ) \ def(_d2i , "d2i" , "b" , nullptr , T_INT , -1, false, _d2i ) \ def(_d2l , "d2l" , "b" , nullptr , T_LONG , 0, false, _d2l ) \ def(_d2f , "d2f" , "b" , nullptr , T_FLOAT , -1, false, _d2f ) \ def(_i2b , "i2b" , "b" , nullptr , T_BYTE , 0, false, _i2b ) \ def(_i2c , "i2c" , "b" , nullptr , T_CHAR , 0, false, _i2c ) \ def(_i2s , "i2s" , "b" , nullptr , T_SHORT , 0, false, _i2s ) \ def(_lcmp , "lcmp" , "b" , nullptr , T_VOID , -3, false, _lcmp ) \ def(_fcmpl , "fcmpl" , "b" , nullptr , T_VOID , -1, false, _fcmpl ) \ def(_fcmpg , "fcmpg" , "b" , nullptr , T_VOID , -1, false, _fcmpg ) \ def(_dcmpl , "dcmpl" , "b" , nullptr , T_VOID , -3, false, _dcmpl ) \ def(_dcmpg , "dcmpg" , "b" , nullptr , T_VOID , -3, false, _dcmpg ) \ def(_ifeq , "ifeq" , "boo" , nullptr , T_VOID , -1, false, _ifeq ) \ def(_ifne , "ifne" , "boo" , nullptr , T_VOID , -1, false, _ifne ) \ def(_iflt , "iflt" , "boo" , nullptr , T_VOID , -1, false, _iflt ) \ def(_ifge , "ifge" , "boo" , nullptr , T_VOID , -1, false, _ifge ) \ def(_ifgt , "ifgt" , "boo" , nullptr , T_VOID , -1, false, _ifgt ) \ def(_ifle , "ifle" , "boo" , nullptr , T_VOID , -1, false, _ifle ) \ def(_if_icmpeq , "if_icmpeq" , "boo" , nullptr , T_VOID , -2, false, _if_icmpeq ) \ def(_if_icmpne , "if_icmpne" , "boo" , nullptr , T_VOID , -2, false, _if_icmpne ) \ def(_if_icmplt , "if_icmplt" , "boo" , nullptr , T_VOID , -2, false, _if_icmplt ) \ def(_if_icmpge , "if_icmpge" , "boo" , nullptr , T_VOID , -2, false, _if_icmpge ) \ def(_if_icmpgt , "if_icmpgt" , "boo" , nullptr , T_VOID , -2, false, _if_icmpgt ) \ def(_if_icmple , "if_icmple" , "boo" , nullptr , T_VOID , -2, false, _if_icmple ) \ def(_if_acmpeq , "if_acmpeq" , "boo" , nullptr , T_VOID , -2, false, _if_acmpeq ) \ def(_if_acmpne , "if_acmpne" , "boo" , nullptr , T_VOID , -2, false, _if_acmpne ) \ def(_goto , "goto" , "boo" , nullptr , T_VOID , 0, false, _goto ) \ def(_jsr , "jsr" , "boo" , nullptr , T_INT , 0, false, _jsr ) \ def(_ret , "ret" , "bi" , "wbii" , T_VOID , 0, false, _ret ) \ def(_tableswitch , "tableswitch" , "" , nullptr , T_VOID , -1, false, _tableswitch ) \ def(_lookupswitch , "lookupswitch" , "" , nullptr , T_VOID , -1, false, _lookupswitch ) \ def(_ireturn , "ireturn" , "b" , nullptr , T_INT , -1, true , _ireturn ) \ def(_lreturn , "lreturn" , "b" , nullptr , T_LONG , -2, true , _lreturn ) \ def(_freturn , "freturn" , "b" , nullptr , T_FLOAT , -1, true , _freturn ) \ def(_dreturn , "dreturn" , "b" , nullptr , T_DOUBLE , -2, true , _dreturn ) \ def(_areturn , "areturn" , "b" , nullptr , T_OBJECT , -1, true , _areturn ) \ def(_return , "return" , "b" , nullptr , T_VOID , 0, true , _return ) \ def(_getstatic , "getstatic" , "bJJ" , nullptr , T_ILLEGAL, 1, true , _getstatic ) \ def(_putstatic , "putstatic" , "bJJ" , nullptr , T_ILLEGAL, -1, true , _putstatic ) \ def(_getfield , "getfield" , "bJJ" , nullptr , T_ILLEGAL, 0, true , _getfield ) \ def(_putfield , "putfield" , "bJJ" , nullptr , T_ILLEGAL, -2, true , _putfield ) \ def(_invokevirtual , "invokevirtual" , "bJJ" , nullptr , T_ILLEGAL, -1, true , _invokevirtual ) \ def(_invokespecial , "invokespecial" , "bJJ" , nullptr , T_ILLEGAL, -1, true , _invokespecial ) \ def(_invokestatic , "invokestatic" , "bJJ" , nullptr , T_ILLEGAL, 0, true , _invokestatic ) \ def(_invokeinterface , "invokeinterface" , "bJJ__", nullptr , T_ILLEGAL, -1, true , _invokeinterface) \ def(_invokedynamic , "invokedynamic" , "bJJJJ", nullptr , T_ILLEGAL, 0, true , _invokedynamic ) \ def(_new , "new" , "bkk" , nullptr , T_OBJECT , 1, true , _new ) \ def(_newarray , "newarray" , "bc" , nullptr , T_OBJECT , 0, true , _newarray ) \ def(_anewarray , "anewarray" , "bkk" , nullptr , T_OBJECT , 0, true , _anewarray ) \ def(_arraylength , "arraylength" , "b" , nullptr , T_INT , 0, true , _arraylength ) \ def(_athrow , "athrow" , "b" , nullptr , T_VOID , -1, true , _athrow ) \ def(_checkcast , "checkcast" , "bkk" , nullptr , T_OBJECT , 0, true , _checkcast ) \ def(_instanceof , "instanceof" , "bkk" , nullptr , T_INT , 0, true , _instanceof ) \ def(_monitorenter , "monitorenter" , "b" , nullptr , T_VOID , -1, true , _monitorenter ) \ def(_monitorexit , "monitorexit" , "b" , nullptr , T_VOID , -1, true , _monitorexit ) \ def(_wide , "wide" , "" , nullptr , T_VOID , 0, false, _wide ) \ def(_multianewarray , "multianewarray" , "bkkc" , nullptr , T_OBJECT , 1, true , _multianewarray ) \ def(_ifnull , "ifnull" , "boo" , nullptr , T_VOID , -1, false, _ifnull ) \ def(_ifnonnull , "ifnonnull" , "boo" , nullptr , T_VOID , -1, false, _ifnonnull ) \ def(_goto_w , "goto_w" , "boooo", nullptr , T_VOID , 0, false, _goto_w ) \ def(_jsr_w , "jsr_w" , "boooo", nullptr , T_INT , 0, false, _jsr_w ) \ def(_breakpoint , "breakpoint" , "" , nullptr , T_VOID , 0, true , _breakpoint ) \ JVM_BYTECODES_DO(def) bool Bytecodes::_is_initialized = false; const char* const Bytecodes::_name[Bytecodes::number_of_codes] = { #define BYTECODE_NAME(code, name, format, wide_format, result_type, depth, can_trap, java_code) name, BYTECODES_DO(BYTECODE_NAME) #undef BYTECODE_NAME }; const BasicType Bytecodes::_result_type[Bytecodes::number_of_codes] = { #define BYTECODE_RESULT_TYPE(code, name, format, wide_format, result_type, depth, can_trap, java_code) result_type, BYTECODES_DO(BYTECODE_RESULT_TYPE) #undef BYTECODE_RESULT_TYPE }; const s_char Bytecodes::_depth[Bytecodes::number_of_codes] = { #define BYTECODE_DEPTH(code, name, format, wide_format, result_type, depth, can_trap, java_code) depth, BYTECODES_DO(BYTECODE_DEPTH) #undef BYTECODE_DEPTH }; // Helper for determining the size (a.k.a. length) of a string literal. struct StringLiteralSize { template static constexpr size_t invoke(const char (&)[N]) { static_assert(N > 0, "N must be greater than 0"); // The size is N - 1, as C strings have an implicit NUL at the end. So "foo" will result in N // being 4, but we actually want 3. return N - 1; } static constexpr size_t invoke(std::nullptr_t) { return 0; } }; #define STRING_SIZE(string) StringLiteralSize::invoke(string) const u_char Bytecodes::_lengths[Bytecodes::number_of_codes] = { #define BYTECODE_LENGTHS(code, name, format, wide_format, result_type, depth, can_trap, java_code) static_cast((STRING_SIZE(wide_format) << 4) | (STRING_SIZE(format) & 0xf)), BYTECODES_DO(BYTECODE_LENGTHS) #undef BYTECODE_LENGTHS }; const Bytecodes::Code Bytecodes::_java_code[Bytecodes::number_of_codes] = { #define BYTECODE_JAVA_CODE(code, name, format, wide_format, result_type, depth, can_trap, java_code) Bytecodes::java_code, BYTECODES_DO(BYTECODE_JAVA_CODE) #undef BYTECODE_JAVA_CODE }; jchar Bytecodes::_flags[(1<contains(bcp); } #endif bool Bytecodes::check_must_rewrite(Bytecodes::Code code) { assert(can_rewrite(code), "post-check only"); // Some codes are conditionally rewriting. Look closely at them. switch (code) { case Bytecodes::_aload_0: // Even if RewriteFrequentPairs is turned on, // the _aload_0 code might delay its rewrite until // a following _getfield rewrites itself. return false; case Bytecodes::_lookupswitch: return false; // the rewrite is not done by the interpreter case Bytecodes::_new: // (Could actually look at the class here, but the profit would be small.) return false; // the rewrite is not always done default: // No other special cases. return true; } } Bytecodes::Code Bytecodes::code_at(Method* method, int bci) { return code_at(method, method->bcp_from(bci)); } Bytecodes::Code Bytecodes::non_breakpoint_code_at(const Method* method, address bcp) { assert(method != nullptr, "must have the method for breakpoint conversion"); assert(method->contains(bcp), "must be valid bcp in method"); return method->orig_bytecode_at(method->bci_from(bcp)); } int Bytecodes::special_length_at(Bytecodes::Code code, address bcp, address end) { switch (code) { case _wide: if (end != nullptr && bcp + 1 >= end) { return -1; // don't read past end of code buffer } return wide_length_for(cast(*(bcp + 1))); case _tableswitch: { address aligned_bcp = align_up(bcp + 1, jintSize); if (end != nullptr && aligned_bcp + 3*jintSize >= end) { return -1; // don't read past end of code buffer } // Promote calculation to signed 64 bits to do range checks, used by the verifier. int64_t lo = (int)Bytes::get_Java_u4(aligned_bcp + 1*jintSize); int64_t hi = (int)Bytes::get_Java_u4(aligned_bcp + 2*jintSize); int64_t len = (aligned_bcp - bcp) + (3 + hi - lo + 1)*jintSize; // Only return len if it can be represented as a positive int and lo <= hi. // The caller checks for bytecode stream overflow. if (lo <= hi && len == (int)len) { assert(len > 0, "must be"); return (int)len; } else { return -1; } } case _lookupswitch: // fall through case _fast_binaryswitch: // fall through case _fast_linearswitch: { address aligned_bcp = align_up(bcp + 1, jintSize); if (end != nullptr && aligned_bcp + 2*jintSize >= end) { return -1; // don't read past end of code buffer } // Promote calculation to 64 bits to do range checks, used by the verifier. int64_t npairs = (int)Bytes::get_Java_u4(aligned_bcp + jintSize); int64_t len = (aligned_bcp - bcp) + (2 + 2*npairs)*jintSize; // Only return len if it can be represented as a positive int and npairs >= 0. if (npairs >= 0 && len == (int)len) { assert(len > 0, "must be"); return (int)len; } else { return -1; } } default: // Note: Length functions must return <=0 for invalid bytecodes. return 0; } } // At a breakpoint instruction, this returns the breakpoint's length, // otherwise, it's the same as special_length_at(). This is used by // the RawByteCodeStream, which wants to see the actual bytecode // values (including breakpoint). RawByteCodeStream is used by the // verifier when reading in bytecode to verify. Other mechanisms that // run at runtime (such as generateOopMaps) need to iterate over the code // and don't expect to see breakpoints: they want to see the instruction // which was replaced so that they can get the correct length and find // the next bytecode. // // 'end' indicates the end of the code buffer, which we should not try to read // past. int Bytecodes::raw_special_length_at(address bcp, address end) { Code code = code_or_bp_at(bcp); if (code == _breakpoint) { return 1; } else { return special_length_at(code, bcp, end); } } void Bytecodes::def_flags(Code code, const char* format, const char* wide_format, bool can_trap, Code java_code) { assert(wide_format == nullptr || format != nullptr, "short form must exist if there's a wide form"); #ifdef ASSERT int len = (format != nullptr ? (int) strlen(format) : 0); int wlen = (wide_format != nullptr ? (int) strlen(wide_format) : 0); #endif jchar bc_flags = 0; if (can_trap) bc_flags |= _bc_can_trap; if (java_code != code) bc_flags |= _bc_can_rewrite; _flags[(u1)code+0*(1< %s can trap, too", name(code), name(java)); } } } #endif // initialization successful _is_initialized = true; } void bytecodes_init() { Bytecodes::initialize(); } // Restore optimization #ifdef _M_AMD64 #pragma optimize ("", on) #endif