Mercurial > hg > truffle
changeset 5568:fdf19fa15ce4
Split bytecode utilities into separate project.
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/graal/com.oracle.graal.bytecode/src/com/oracle/graal/bytecode/BytecodeLookupSwitch.java Mon Jun 11 13:51:34 2012 +0200 @@ -0,0 +1,67 @@ +/* + * Copyright (c) 2009, 2011, 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. + */ +package com.oracle.graal.bytecode; + +/** + * A utility for processing {@link Bytecodes#LOOKUPSWITCH} bytecodes. + */ +public class BytecodeLookupSwitch extends BytecodeSwitch { + private static final int OFFSET_TO_NUMBER_PAIRS = 4; + private static final int OFFSET_TO_FIRST_PAIR_MATCH = 8; + private static final int OFFSET_TO_FIRST_PAIR_OFFSET = 12; + private static final int PAIR_SIZE = 8; + + /** + * Constructor for a {@link BytecodeStream}. + * @param stream the {@code BytecodeStream} containing the switch instruction + * @param bci the index in the stream of the switch instruction + */ + public BytecodeLookupSwitch(BytecodeStream stream, int bci) { + super(stream, bci); + } + + @Override + public int defaultOffset() { + return stream.readInt(alignedBci); + } + + @Override + public int offsetAt(int i) { + return stream.readInt(alignedBci + OFFSET_TO_FIRST_PAIR_OFFSET + PAIR_SIZE * i); + } + + @Override + public int keyAt(int i) { + return stream.readInt(alignedBci + OFFSET_TO_FIRST_PAIR_MATCH + PAIR_SIZE * i); + } + + @Override + public int numberOfCases() { + return stream.readInt(alignedBci + OFFSET_TO_NUMBER_PAIRS); + } + + @Override + public int size() { + return alignedBci + OFFSET_TO_FIRST_PAIR_MATCH + PAIR_SIZE * numberOfCases() - bci; + } +}
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/graal/com.oracle.graal.bytecode/src/com/oracle/graal/bytecode/BytecodeStream.java Mon Jun 11 13:51:34 2012 +0200 @@ -0,0 +1,224 @@ +/* + * Copyright (c) 2009, 2011, 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. + */ +package com.oracle.graal.bytecode; + + +/** + * A utility class that makes iterating over bytecodes and reading operands + * simpler and less error prone. For example, it handles the {@link Bytecodes#WIDE} instruction + * and wide variants of instructions internally. + */ +public final class BytecodeStream { + + private final byte[] code; + private int opcode; + private int curBCI; + private int nextBCI; + + /** + * Creates a new {@code BytecodeStream} for the specified bytecode. + * @param code the array of bytes that contains the bytecode + */ + public BytecodeStream(byte[] code) { + assert code != null; + this.code = code; + setBCI(0); + } + + /** + * Advances to the next bytecode. + */ + public void next() { + setBCI(nextBCI); + } + + /** + * Gets the next bytecode index (no side-effects). + * @return the next bytecode index + */ + public int nextBCI() { + return nextBCI; + } + + /** + * Gets the current bytecode index. + * @return the current bytecode index + */ + public int currentBCI() { + return curBCI; + } + + /** + * Gets the bytecode index of the end of the code. + * @return the index of the end of the code + */ + public int endBCI() { + return code.length; + } + + /** + * Gets the current opcode. This method will never return the + * {@link Bytecodes#WIDE WIDE} opcode, but will instead + * return the opcode that is modified by the {@code WIDE} opcode. + * @return the current opcode; {@link Bytecodes#END} if at or beyond the end of the code + */ + public int currentBC() { + if (opcode == Bytecodes.WIDE) { + return Bytes.beU1(code, curBCI + 1); + } else { + return opcode; + } + } + + /** + * Reads the index of a local variable for one of the load or store instructions. + * The WIDE modifier is handled internally. + * @return the index of the local variable + */ + public int readLocalIndex() { + // read local variable index for load/store + if (opcode == Bytecodes.WIDE) { + return Bytes.beU2(code, curBCI + 2); + } + return Bytes.beU1(code, curBCI + 1); + } + + /** + * Read the delta for an {@link Bytecodes#IINC} bytecode. + * @return the delta for the {@code IINC} + */ + public int readIncrement() { + // read the delta for the iinc bytecode + if (opcode == Bytecodes.WIDE) { + return Bytes.beS2(code, curBCI + 4); + } + return Bytes.beS1(code, curBCI + 2); + } + + /** + * Read the destination of a {@link Bytecodes#GOTO} or {@code IF} instructions. + * @return the destination bytecode index + */ + public int readBranchDest() { + // reads the destination for a branch bytecode + if (opcode == Bytecodes.GOTO_W || opcode == Bytecodes.JSR_W) { + return curBCI + Bytes.beS4(code, curBCI + 1); + } else { + return curBCI + Bytes.beS2(code, curBCI + 1); + } + } + + /** + * Read a signed 4-byte integer from the bytecode stream at the specified bytecode index. + * @param bci the bytecode index + * @return the integer value + */ + public int readInt(int bci) { + // reads a 4-byte signed value + return Bytes.beS4(code, bci); + } + + /** + * Reads an unsigned, 1-byte value from the bytecode stream at the specified bytecode index. + * @param bci the bytecode index + * @return the byte + */ + public int readUByte(int bci) { + return Bytes.beU1(code, bci); + } + + /** + * Reads a constant pool index for the current instruction. + * @return the constant pool index + */ + public char readCPI() { + if (opcode == Bytecodes.LDC) { + return (char) Bytes.beU1(code, curBCI + 1); + } + return (char) Bytes.beU2(code, curBCI + 1); + } + + /** + * Reads a signed, 1-byte value for the current instruction (e.g. BIPUSH). + * @return the byte + */ + public byte readByte() { + return code[curBCI + 1]; + } + + /** + * Reads a signed, 2-byte short for the current instruction (e.g. SIPUSH). + * @return the short value + */ + public short readShort() { + return (short) Bytes.beS2(code, curBCI + 1); + } + + /** + * Sets the bytecode index to the specified value. + * If {@code bci} is beyond the end of the array, {@link #currentBC} will return + * {@link Bytecodes#END} and other methods may throw {@link ArrayIndexOutOfBoundsException}. + * @param bci the new bytecode index + */ + public void setBCI(int bci) { + curBCI = bci; + if (curBCI < code.length) { + opcode = Bytes.beU1(code, bci); + assert opcode < Bytecodes.BREAKPOINT : "illegal bytecode"; + nextBCI = bci + lengthOf(); + } else { + opcode = Bytecodes.END; + nextBCI = curBCI; + } + } + + /** + * Gets the length of the current bytecode. + */ + private int lengthOf() { + int length = Bytecodes.lengthOf(opcode); + if (length == 0) { + switch (opcode) { + case Bytecodes.TABLESWITCH: { + return new BytecodeTableSwitch(this, curBCI).size(); + } + case Bytecodes.LOOKUPSWITCH: { + return new BytecodeLookupSwitch(this, curBCI).size(); + } + case Bytecodes.WIDE: { + int opc = Bytes.beU1(code, curBCI + 1); + if (opc == Bytecodes.RET) { + return 4; + } else if (opc == Bytecodes.IINC) { + return 6; + } else { + return 4; // a load or store bytecode + } + } + default: + throw new Error("unknown variable-length bytecode: " + opcode); + } + } + return length; + } +}
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/graal/com.oracle.graal.bytecode/src/com/oracle/graal/bytecode/BytecodeSwitch.java Mon Jun 11 13:51:34 2012 +0200 @@ -0,0 +1,110 @@ +/* + * Copyright (c) 2009, 2011, 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. + */ +package com.oracle.graal.bytecode; + +/** + * An abstract class that provides the state and methods common to {@link Bytecodes#LOOKUPSWITCH} + * and {@link Bytecodes#TABLESWITCH} instructions. + */ +public abstract class BytecodeSwitch { + /** + * The {@link BytecodeStream} containing the bytecode array. + */ + protected final BytecodeStream stream; + /** + * Index of start of switch instruction. + */ + protected final int bci; + /** + * Index of the start of the additional data for the switch instruction, aligned to a multiple of four from the method start. + */ + protected final int alignedBci; + + /** + * Constructor for a {@link BytecodeStream}. + * @param stream the {@code BytecodeStream} containing the switch instruction + * @param bci the index in the stream of the switch instruction + */ + public BytecodeSwitch(BytecodeStream stream, int bci) { + this.stream = stream; + this.bci = bci; + this.alignedBci = (bci + 4) & 0xfffffffc; + } + + /** + * Gets the current bytecode index. + * @return the current bytecode index + */ + public int bci() { + return bci; + } + + /** + * Gets the index of the instruction denoted by the {@code i}'th switch target. + * @param i index of the switch target + * @return the index of the instruction denoted by the {@code i}'th switch target + */ + public int targetAt(int i) { + return bci + offsetAt(i); + } + + /** + * Gets the index of the instruction for the default switch target. + * @return the index of the instruction for the default switch target + */ + public int defaultTarget() { + return bci + defaultOffset(); + } + + /** + * Gets the offset from the start of the switch instruction to the default switch target. + * @return the offset to the default switch target + */ + public abstract int defaultOffset(); + + /** + * Gets the key at {@code i}'th switch target index. + * @param i the switch target index + * @return the key at {@code i}'th switch target index + */ + public abstract int keyAt(int i); + + /** + * Gets the offset from the start of the switch instruction for the {@code i}'th switch target. + * @param i the switch target index + * @return the offset to the {@code i}'th switch target + */ + public abstract int offsetAt(int i); + + /** + * Gets the number of switch targets. + * @return the number of switch targets + */ + public abstract int numberOfCases(); + + /** + * Gets the total size in bytes of the switch instruction. + * @return the total size in bytes of the switch instruction + */ + public abstract int size(); +}
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/graal/com.oracle.graal.bytecode/src/com/oracle/graal/bytecode/BytecodeTableSwitch.java Mon Jun 11 13:51:34 2012 +0200 @@ -0,0 +1,83 @@ +/* + * Copyright (c) 2009, 2011, 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. + */ +package com.oracle.graal.bytecode; + +/** + * A utility for processing {@link Bytecodes#TABLESWITCH} bytecodes. + */ +public class BytecodeTableSwitch extends BytecodeSwitch { + private static final int OFFSET_TO_LOW_KEY = 4; + private static final int OFFSET_TO_HIGH_KEY = 8; + private static final int OFFSET_TO_FIRST_JUMP_OFFSET = 12; + private static final int JUMP_OFFSET_SIZE = 4; + + /** + * Constructor for a {@link BytecodeStream}. + * @param stream the {@code BytecodeStream} containing the switch instruction + * @param bci the index in the stream of the switch instruction + */ + public BytecodeTableSwitch(BytecodeStream stream, int bci) { + super(stream, bci); + } + + /** + * Gets the low key of the table switch. + * @return the low key + */ + public int lowKey() { + return stream.readInt(alignedBci + OFFSET_TO_LOW_KEY); + } + + /** + * Gets the high key of the table switch. + * @return the high key + */ + public int highKey() { + return stream.readInt(alignedBci + OFFSET_TO_HIGH_KEY); + } + + @Override + public int keyAt(int i) { + return lowKey() + i; + } + + @Override + public int defaultOffset() { + return stream.readInt(alignedBci); + } + + @Override + public int offsetAt(int i) { + return stream.readInt(alignedBci + OFFSET_TO_FIRST_JUMP_OFFSET + JUMP_OFFSET_SIZE * i); + } + + @Override + public int numberOfCases() { + return highKey() - lowKey() + 1; + } + + @Override + public int size() { + return alignedBci + OFFSET_TO_FIRST_JUMP_OFFSET + JUMP_OFFSET_SIZE * numberOfCases() - bci; + } +}
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/graal/com.oracle.graal.bytecode/src/com/oracle/graal/bytecode/Bytecodes.java Mon Jun 11 13:51:34 2012 +0200 @@ -0,0 +1,940 @@ +/* + * Copyright (c) 2009, 2011, 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. + */ +package com.oracle.graal.bytecode; + +import static com.oracle.graal.bytecode.Bytecodes.Flags.*; + +import java.io.*; +import java.lang.reflect.*; +import java.util.regex.*; + +/** + * The definitions of the bytecodes that are valid input to the compiler and + * related utility methods. This comprises two groups: the standard Java + * bytecodes defined by <a href= + * "http://java.sun.com/docs/books/jvms/second_edition/html/VMSpecTOC.doc.html"> + * Java Virtual Machine Specification</a>, and a set of <i>extended</i> + * bytecodes that support low-level programming, for example, memory barriers. + * + * The extended bytecodes are one or three bytes in size. The one-byte bytecodes + * follow the values in the standard set, with no gap. The three-byte extended + * bytecodes share a common first byte and carry additional instruction-specific + * information in the second and third bytes. + */ +public class Bytecodes { + public static final int NOP = 0; // 0x00 + public static final int ACONST_NULL = 1; // 0x01 + public static final int ICONST_M1 = 2; // 0x02 + public static final int ICONST_0 = 3; // 0x03 + public static final int ICONST_1 = 4; // 0x04 + public static final int ICONST_2 = 5; // 0x05 + public static final int ICONST_3 = 6; // 0x06 + public static final int ICONST_4 = 7; // 0x07 + public static final int ICONST_5 = 8; // 0x08 + public static final int LCONST_0 = 9; // 0x09 + public static final int LCONST_1 = 10; // 0x0A + public static final int FCONST_0 = 11; // 0x0B + public static final int FCONST_1 = 12; // 0x0C + public static final int FCONST_2 = 13; // 0x0D + public static final int DCONST_0 = 14; // 0x0E + public static final int DCONST_1 = 15; // 0x0F + public static final int BIPUSH = 16; // 0x10 + public static final int SIPUSH = 17; // 0x11 + public static final int LDC = 18; // 0x12 + public static final int LDC_W = 19; // 0x13 + public static final int LDC2_W = 20; // 0x14 + public static final int ILOAD = 21; // 0x15 + public static final int LLOAD = 22; // 0x16 + public static final int FLOAD = 23; // 0x17 + public static final int DLOAD = 24; // 0x18 + public static final int ALOAD = 25; // 0x19 + public static final int ILOAD_0 = 26; // 0x1A + public static final int ILOAD_1 = 27; // 0x1B + public static final int ILOAD_2 = 28; // 0x1C + public static final int ILOAD_3 = 29; // 0x1D + public static final int LLOAD_0 = 30; // 0x1E + public static final int LLOAD_1 = 31; // 0x1F + public static final int LLOAD_2 = 32; // 0x20 + public static final int LLOAD_3 = 33; // 0x21 + public static final int FLOAD_0 = 34; // 0x22 + public static final int FLOAD_1 = 35; // 0x23 + public static final int FLOAD_2 = 36; // 0x24 + public static final int FLOAD_3 = 37; // 0x25 + public static final int DLOAD_0 = 38; // 0x26 + public static final int DLOAD_1 = 39; // 0x27 + public static final int DLOAD_2 = 40; // 0x28 + public static final int DLOAD_3 = 41; // 0x29 + public static final int ALOAD_0 = 42; // 0x2A + public static final int ALOAD_1 = 43; // 0x2B + public static final int ALOAD_2 = 44; // 0x2C + public static final int ALOAD_3 = 45; // 0x2D + public static final int IALOAD = 46; // 0x2E + public static final int LALOAD = 47; // 0x2F + public static final int FALOAD = 48; // 0x30 + public static final int DALOAD = 49; // 0x31 + public static final int AALOAD = 50; // 0x32 + public static final int BALOAD = 51; // 0x33 + public static final int CALOAD = 52; // 0x34 + public static final int SALOAD = 53; // 0x35 + public static final int ISTORE = 54; // 0x36 + public static final int LSTORE = 55; // 0x37 + public static final int FSTORE = 56; // 0x38 + public static final int DSTORE = 57; // 0x39 + public static final int ASTORE = 58; // 0x3A + public static final int ISTORE_0 = 59; // 0x3B + public static final int ISTORE_1 = 60; // 0x3C + public static final int ISTORE_2 = 61; // 0x3D + public static final int ISTORE_3 = 62; // 0x3E + public static final int LSTORE_0 = 63; // 0x3F + public static final int LSTORE_1 = 64; // 0x40 + public static final int LSTORE_2 = 65; // 0x41 + public static final int LSTORE_3 = 66; // 0x42 + public static final int FSTORE_0 = 67; // 0x43 + public static final int FSTORE_1 = 68; // 0x44 + public static final int FSTORE_2 = 69; // 0x45 + public static final int FSTORE_3 = 70; // 0x46 + public static final int DSTORE_0 = 71; // 0x47 + public static final int DSTORE_1 = 72; // 0x48 + public static final int DSTORE_2 = 73; // 0x49 + public static final int DSTORE_3 = 74; // 0x4A + public static final int ASTORE_0 = 75; // 0x4B + public static final int ASTORE_1 = 76; // 0x4C + public static final int ASTORE_2 = 77; // 0x4D + public static final int ASTORE_3 = 78; // 0x4E + public static final int IASTORE = 79; // 0x4F + public static final int LASTORE = 80; // 0x50 + public static final int FASTORE = 81; // 0x51 + public static final int DASTORE = 82; // 0x52 + public static final int AASTORE = 83; // 0x53 + public static final int BASTORE = 84; // 0x54 + public static final int CASTORE = 85; // 0x55 + public static final int SASTORE = 86; // 0x56 + public static final int POP = 87; // 0x57 + public static final int POP2 = 88; // 0x58 + public static final int DUP = 89; // 0x59 + public static final int DUP_X1 = 90; // 0x5A + public static final int DUP_X2 = 91; // 0x5B + public static final int DUP2 = 92; // 0x5C + public static final int DUP2_X1 = 93; // 0x5D + public static final int DUP2_X2 = 94; // 0x5E + public static final int SWAP = 95; // 0x5F + public static final int IADD = 96; // 0x60 + public static final int LADD = 97; // 0x61 + public static final int FADD = 98; // 0x62 + public static final int DADD = 99; // 0x63 + public static final int ISUB = 100; // 0x64 + public static final int LSUB = 101; // 0x65 + public static final int FSUB = 102; // 0x66 + public static final int DSUB = 103; // 0x67 + public static final int IMUL = 104; // 0x68 + public static final int LMUL = 105; // 0x69 + public static final int FMUL = 106; // 0x6A + public static final int DMUL = 107; // 0x6B + public static final int IDIV = 108; // 0x6C + public static final int LDIV = 109; // 0x6D + public static final int FDIV = 110; // 0x6E + public static final int DDIV = 111; // 0x6F + public static final int IREM = 112; // 0x70 + public static final int LREM = 113; // 0x71 + public static final int FREM = 114; // 0x72 + public static final int DREM = 115; // 0x73 + public static final int INEG = 116; // 0x74 + public static final int LNEG = 117; // 0x75 + public static final int FNEG = 118; // 0x76 + public static final int DNEG = 119; // 0x77 + public static final int ISHL = 120; // 0x78 + public static final int LSHL = 121; // 0x79 + public static final int ISHR = 122; // 0x7A + public static final int LSHR = 123; // 0x7B + public static final int IUSHR = 124; // 0x7C + public static final int LUSHR = 125; // 0x7D + public static final int IAND = 126; // 0x7E + public static final int LAND = 127; // 0x7F + public static final int IOR = 128; // 0x80 + public static final int LOR = 129; // 0x81 + public static final int IXOR = 130; // 0x82 + public static final int LXOR = 131; // 0x83 + public static final int IINC = 132; // 0x84 + public static final int I2L = 133; // 0x85 + public static final int I2F = 134; // 0x86 + public static final int I2D = 135; // 0x87 + public static final int L2I = 136; // 0x88 + public static final int L2F = 137; // 0x89 + public static final int L2D = 138; // 0x8A + public static final int F2I = 139; // 0x8B + public static final int F2L = 140; // 0x8C + public static final int F2D = 141; // 0x8D + public static final int D2I = 142; // 0x8E + public static final int D2L = 143; // 0x8F + public static final int D2F = 144; // 0x90 + public static final int I2B = 145; // 0x91 + public static final int I2C = 146; // 0x92 + public static final int I2S = 147; // 0x93 + public static final int LCMP = 148; // 0x94 + public static final int FCMPL = 149; // 0x95 + public static final int FCMPG = 150; // 0x96 + public static final int DCMPL = 151; // 0x97 + public static final int DCMPG = 152; // 0x98 + public static final int IFEQ = 153; // 0x99 + public static final int IFNE = 154; // 0x9A + public static final int IFLT = 155; // 0x9B + public static final int IFGE = 156; // 0x9C + public static final int IFGT = 157; // 0x9D + public static final int IFLE = 158; // 0x9E + public static final int IF_ICMPEQ = 159; // 0x9F + public static final int IF_ICMPNE = 160; // 0xA0 + public static final int IF_ICMPLT = 161; // 0xA1 + public static final int IF_ICMPGE = 162; // 0xA2 + public static final int IF_ICMPGT = 163; // 0xA3 + public static final int IF_ICMPLE = 164; // 0xA4 + public static final int IF_ACMPEQ = 165; // 0xA5 + public static final int IF_ACMPNE = 166; // 0xA6 + public static final int GOTO = 167; // 0xA7 + public static final int JSR = 168; // 0xA8 + public static final int RET = 169; // 0xA9 + public static final int TABLESWITCH = 170; // 0xAA + public static final int LOOKUPSWITCH = 171; // 0xAB + public static final int IRETURN = 172; // 0xAC + public static final int LRETURN = 173; // 0xAD + public static final int FRETURN = 174; // 0xAE + public static final int DRETURN = 175; // 0xAF + public static final int ARETURN = 176; // 0xB0 + public static final int RETURN = 177; // 0xB1 + public static final int GETSTATIC = 178; // 0xB2 + public static final int PUTSTATIC = 179; // 0xB3 + public static final int GETFIELD = 180; // 0xB4 + public static final int PUTFIELD = 181; // 0xB5 + public static final int INVOKEVIRTUAL = 182; // 0xB6 + public static final int INVOKESPECIAL = 183; // 0xB7 + public static final int INVOKESTATIC = 184; // 0xB8 + public static final int INVOKEINTERFACE = 185; // 0xB9 + public static final int XXXUNUSEDXXX = 186; // 0xBA + public static final int NEW = 187; // 0xBB + public static final int NEWARRAY = 188; // 0xBC + public static final int ANEWARRAY = 189; // 0xBD + public static final int ARRAYLENGTH = 190; // 0xBE + public static final int ATHROW = 191; // 0xBF + public static final int CHECKCAST = 192; // 0xC0 + public static final int INSTANCEOF = 193; // 0xC1 + public static final int MONITORENTER = 194; // 0xC2 + public static final int MONITOREXIT = 195; // 0xC3 + public static final int WIDE = 196; // 0xC4 + public static final int MULTIANEWARRAY = 197; // 0xC5 + public static final int IFNULL = 198; // 0xC6 + public static final int IFNONNULL = 199; // 0xC7 + public static final int GOTO_W = 200; // 0xC8 + public static final int JSR_W = 201; // 0xC9 + public static final int BREAKPOINT = 202; // 0xCA + + public static final int ILLEGAL = 255; + public static final int END = 256; + + /** + * The last opcode defined by the JVM specification. To iterate over all JVM bytecodes: + * <pre> + * for (int opcode = 0; opcode <= Bytecodes.LAST_JVM_OPCODE; ++opcode) { + * // + * } + * </pre> + */ + public static final int LAST_JVM_OPCODE = JSR_W; + + /** + * A collection of flags describing various bytecode attributes. + */ + static class Flags { + + /** + * Denotes an instruction that ends a basic block and does not let control flow fall through to its lexical successor. + */ + static final int STOP = 0x00000001; + + /** + * Denotes an instruction that ends a basic block and may let control flow fall through to its lexical successor. + * In practice this means it is a conditional branch. + */ + static final int FALL_THROUGH = 0x00000002; + + /** + * Denotes an instruction that has a 2 or 4 byte operand that is an offset to another instruction in the same method. + * This does not include the {@link Bytecodes#TABLESWITCH} or {@link Bytecodes#LOOKUPSWITCH} instructions. + */ + static final int BRANCH = 0x00000004; + + /** + * Denotes an instruction that reads the value of a static or instance field. + */ + static final int FIELD_READ = 0x00000008; + + /** + * Denotes an instruction that writes the value of a static or instance field. + */ + static final int FIELD_WRITE = 0x00000010; + + /** + * Denotes an instruction that is not defined in the JVM specification. + */ + static final int EXTENSION = 0x00000020; + + /** + * Denotes an instruction that can cause a trap. + */ + static final int TRAP = 0x00000080; + /** + * Denotes an instruction that is commutative. + */ + static final int COMMUTATIVE = 0x00000100; + /** + * Denotes an instruction that is associative. + */ + static final int ASSOCIATIVE = 0x00000200; + /** + * Denotes an instruction that loads an operand. + */ + static final int LOAD = 0x00000400; + /** + * Denotes an instruction that stores an operand. + */ + static final int STORE = 0x00000800; + /** + * Denotes the 4 INVOKE* instructions. + */ + static final int INVOKE = 0x00001000; + } + + // Performs a sanity check that none of the flags overlap. + static { + int allFlags = 0; + try { + for (Field field : Flags.class.getDeclaredFields()) { + int flagsFilter = Modifier.FINAL | Modifier.STATIC; + if ((field.getModifiers() & flagsFilter) == flagsFilter && !field.isSynthetic()) { + assert field.getType() == int.class : "Field is not int : " + field; + final int flag = field.getInt(null); + assert flag != 0; + assert (flag & allFlags) == 0 : field.getName() + " has a value conflicting with another flag"; + allFlags |= flag; + } + } + } catch (Exception e) { + throw new InternalError(e.toString()); + } + } + + /** + * An array that maps from a bytecode value to a {@link String} for the corresponding instruction mnemonic. + * This will include the root instruction for the three-byte extended instructions. + */ + private static final String[] nameArray = new String[256]; + + /** + * An array that maps from a bytecode value to the set of {@link Flags} for the corresponding instruction. + */ + private static final int[] flagsArray = new int[256]; + + /** + * An array that maps from a bytecode value to the length in bytes for the corresponding instruction. + */ + private static final int[] lengthArray = new int[256]; + + /** + * An array that maps from a bytecode value to the estimated complexity of the bytecode in terms of generated machine code. + */ + private static final int[] compilationComplexityArray = new int[256]; + + // Checkstyle: stop + static { + def(NOP , "nop" , "b" , 0); + def(ACONST_NULL , "aconst_null" , "b" , 0); + def(ICONST_M1 , "iconst_m1" , "b" , 0); + def(ICONST_0 , "iconst_0" , "b" , 0); + def(ICONST_1 , "iconst_1" , "b" , 0); + def(ICONST_2 , "iconst_2" , "b" , 0); + def(ICONST_3 , "iconst_3" , "b" , 0); + def(ICONST_4 , "iconst_4" , "b" , 0); + def(ICONST_5 , "iconst_5" , "b" , 0); + def(LCONST_0 , "lconst_0" , "b" , 0); + def(LCONST_1 , "lconst_1" , "b" , 0); + def(FCONST_0 , "fconst_0" , "b" , 0); + def(FCONST_1 , "fconst_1" , "b" , 0); + def(FCONST_2 , "fconst_2" , "b" , 0); + def(DCONST_0 , "dconst_0" , "b" , 0); + def(DCONST_1 , "dconst_1" , "b" , 0); + def(BIPUSH , "bipush" , "bc" , 0); + def(SIPUSH , "sipush" , "bcc" , 0); + def(LDC , "ldc" , "bi" , 0, TRAP); + def(LDC_W , "ldc_w" , "bii" , 0, TRAP); + def(LDC2_W , "ldc2_w" , "bii" , 0, TRAP); + def(ILOAD , "iload" , "bi" , 0, LOAD); + def(LLOAD , "lload" , "bi" , 0, LOAD); + def(FLOAD , "fload" , "bi" , 0, LOAD); + def(DLOAD , "dload" , "bi" , 0, LOAD); + def(ALOAD , "aload" , "bi" , 0, LOAD); + def(ILOAD_0 , "iload_0" , "b" , 0, LOAD); + def(ILOAD_1 , "iload_1" , "b" , 0, LOAD); + def(ILOAD_2 , "iload_2" , "b" , 0, LOAD); + def(ILOAD_3 , "iload_3" , "b" , 0, LOAD); + def(LLOAD_0 , "lload_0" , "b" , 0, LOAD); + def(LLOAD_1 , "lload_1" , "b" , 0, LOAD); + def(LLOAD_2 , "lload_2" , "b" , 0, LOAD); + def(LLOAD_3 , "lload_3" , "b" , 0, LOAD); + def(FLOAD_0 , "fload_0" , "b" , 0, LOAD); + def(FLOAD_1 , "fload_1" , "b" , 0, LOAD); + def(FLOAD_2 , "fload_2" , "b" , 0, LOAD); + def(FLOAD_3 , "fload_3" , "b" , 0, LOAD); + def(DLOAD_0 , "dload_0" , "b" , 0, LOAD); + def(DLOAD_1 , "dload_1" , "b" , 0, LOAD); + def(DLOAD_2 , "dload_2" , "b" , 0, LOAD); + def(DLOAD_3 , "dload_3" , "b" , 0, LOAD); + def(ALOAD_0 , "aload_0" , "b" , 0, LOAD); + def(ALOAD_1 , "aload_1" , "b" , 0, LOAD); + def(ALOAD_2 , "aload_2" , "b" , 0, LOAD); + def(ALOAD_3 , "aload_3" , "b" , 0, LOAD); + def(IALOAD , "iaload" , "b" , 0, TRAP); + def(LALOAD , "laload" , "b" , 0, TRAP); + def(FALOAD , "faload" , "b" , 0, TRAP); + def(DALOAD , "daload" , "b" , 0, TRAP); + def(AALOAD , "aaload" , "b" , 0, TRAP); + def(BALOAD , "baload" , "b" , 0, TRAP); + def(CALOAD , "caload" , "b" , 0, TRAP); + def(SALOAD , "saload" , "b" , 0, TRAP); + def(ISTORE , "istore" , "bi" , 0, STORE); + def(LSTORE , "lstore" , "bi" , 0, STORE); + def(FSTORE , "fstore" , "bi" , 0, STORE); + def(DSTORE , "dstore" , "bi" , 0, STORE); + def(ASTORE , "astore" , "bi" , 0, STORE); + def(ISTORE_0 , "istore_0" , "b" , 0, STORE); + def(ISTORE_1 , "istore_1" , "b" , 0, STORE); + def(ISTORE_2 , "istore_2" , "b" , 0, STORE); + def(ISTORE_3 , "istore_3" , "b" , 0, STORE); + def(LSTORE_0 , "lstore_0" , "b" , 0, STORE); + def(LSTORE_1 , "lstore_1" , "b" , 0, STORE); + def(LSTORE_2 , "lstore_2" , "b" , 0, STORE); + def(LSTORE_3 , "lstore_3" , "b" , 0, STORE); + def(FSTORE_0 , "fstore_0" , "b" , 0, STORE); + def(FSTORE_1 , "fstore_1" , "b" , 0, STORE); + def(FSTORE_2 , "fstore_2" , "b" , 0, STORE); + def(FSTORE_3 , "fstore_3" , "b" , 0, STORE); + def(DSTORE_0 , "dstore_0" , "b" , 0, STORE); + def(DSTORE_1 , "dstore_1" , "b" , 0, STORE); + def(DSTORE_2 , "dstore_2" , "b" , 0, STORE); + def(DSTORE_3 , "dstore_3" , "b" , 0, STORE); + def(ASTORE_0 , "astore_0" , "b" , 0, STORE); + def(ASTORE_1 , "astore_1" , "b" , 0, STORE); + def(ASTORE_2 , "astore_2" , "b" , 0, STORE); + def(ASTORE_3 , "astore_3" , "b" , 0, STORE); + def(IASTORE , "iastore" , "b" , 3, TRAP); + def(LASTORE , "lastore" , "b" , 3, TRAP); + def(FASTORE , "fastore" , "b" , 3, TRAP); + def(DASTORE , "dastore" , "b" , 3, TRAP); + def(AASTORE , "aastore" , "b" , 4, TRAP); + def(BASTORE , "bastore" , "b" , 3, TRAP); + def(CASTORE , "castore" , "b" , 3, TRAP); + def(SASTORE , "sastore" , "b" , 3, TRAP); + def(POP , "pop" , "b" , 0); + def(POP2 , "pop2" , "b" , 0); + def(DUP , "dup" , "b" , 0); + def(DUP_X1 , "dup_x1" , "b" , 0); + def(DUP_X2 , "dup_x2" , "b" , 0); + def(DUP2 , "dup2" , "b" , 0); + def(DUP2_X1 , "dup2_x1" , "b" , 0); + def(DUP2_X2 , "dup2_x2" , "b" , 0); + def(SWAP , "swap" , "b" , 0); + def(IADD , "iadd" , "b" , 1, COMMUTATIVE | ASSOCIATIVE); + def(LADD , "ladd" , "b" , 1, COMMUTATIVE | ASSOCIATIVE); + def(FADD , "fadd" , "b" , 1, COMMUTATIVE | ASSOCIATIVE); + def(DADD , "dadd" , "b" , 1, COMMUTATIVE | ASSOCIATIVE); + def(ISUB , "isub" , "b" , 1); + def(LSUB , "lsub" , "b" , 1); + def(FSUB , "fsub" , "b" , 1); + def(DSUB , "dsub" , "b" , 1); + def(IMUL , "imul" , "b" , 1, COMMUTATIVE | ASSOCIATIVE); + def(LMUL , "lmul" , "b" , 1, COMMUTATIVE | ASSOCIATIVE); + def(FMUL , "fmul" , "b" , 1, COMMUTATIVE | ASSOCIATIVE); + def(DMUL , "dmul" , "b" , 1, COMMUTATIVE | ASSOCIATIVE); + def(IDIV , "idiv" , "b" , 1, TRAP); + def(LDIV , "ldiv" , "b" , 1, TRAP); + def(FDIV , "fdiv" , "b" , 1); + def(DDIV , "ddiv" , "b" , 1); + def(IREM , "irem" , "b" , 1, TRAP); + def(LREM , "lrem" , "b" , 1, TRAP); + def(FREM , "frem" , "b" , 1); + def(DREM , "drem" , "b" , 1); + def(INEG , "ineg" , "b" , 1); + def(LNEG , "lneg" , "b" , 1); + def(FNEG , "fneg" , "b" , 1); + def(DNEG , "dneg" , "b" , 1); + def(ISHL , "ishl" , "b" , 1); + def(LSHL , "lshl" , "b" , 1); + def(ISHR , "ishr" , "b" , 1); + def(LSHR , "lshr" , "b" , 1); + def(IUSHR , "iushr" , "b" , 1); + def(LUSHR , "lushr" , "b" , 1); + def(IAND , "iand" , "b" , 1, COMMUTATIVE | ASSOCIATIVE); + def(LAND , "land" , "b" , 1, COMMUTATIVE | ASSOCIATIVE); + def(IOR , "ior" , "b" , 1, COMMUTATIVE | ASSOCIATIVE); + def(LOR , "lor" , "b" , 1, COMMUTATIVE | ASSOCIATIVE); + def(IXOR , "ixor" , "b" , 1, COMMUTATIVE | ASSOCIATIVE); + def(LXOR , "lxor" , "b" , 1, COMMUTATIVE | ASSOCIATIVE); + def(IINC , "iinc" , "bic" , 1, LOAD | STORE); + def(I2L , "i2l" , "b" , 1); + def(I2F , "i2f" , "b" , 1); + def(I2D , "i2d" , "b" , 1); + def(L2I , "l2i" , "b" , 1); + def(L2F , "l2f" , "b" , 1); + def(L2D , "l2d" , "b" , 1); + def(F2I , "f2i" , "b" , 1); + def(F2L , "f2l" , "b" , 1); + def(F2D , "f2d" , "b" , 1); + def(D2I , "d2i" , "b" , 1); + def(D2L , "d2l" , "b" , 1); + def(D2F , "d2f" , "b" , 1); + def(I2B , "i2b" , "b" , 1); + def(I2C , "i2c" , "b" , 1); + def(I2S , "i2s" , "b" , 1); + def(LCMP , "lcmp" , "b" , 1); + def(FCMPL , "fcmpl" , "b" , 1); + def(FCMPG , "fcmpg" , "b" , 1); + def(DCMPL , "dcmpl" , "b" , 1); + def(DCMPG , "dcmpg" , "b" , 1); + def(IFEQ , "ifeq" , "boo" , 2, FALL_THROUGH | BRANCH); + def(IFNE , "ifne" , "boo" , 2, FALL_THROUGH | BRANCH); + def(IFLT , "iflt" , "boo" , 2, FALL_THROUGH | BRANCH); + def(IFGE , "ifge" , "boo" , 2, FALL_THROUGH | BRANCH); + def(IFGT , "ifgt" , "boo" , 2, FALL_THROUGH | BRANCH); + def(IFLE , "ifle" , "boo" , 2, FALL_THROUGH | BRANCH); + def(IF_ICMPEQ , "if_icmpeq" , "boo" , 2, COMMUTATIVE | FALL_THROUGH | BRANCH); + def(IF_ICMPNE , "if_icmpne" , "boo" , 2, COMMUTATIVE | FALL_THROUGH | BRANCH); + def(IF_ICMPLT , "if_icmplt" , "boo" , 2, FALL_THROUGH | BRANCH); + def(IF_ICMPGE , "if_icmpge" , "boo" , 2, FALL_THROUGH | BRANCH); + def(IF_ICMPGT , "if_icmpgt" , "boo" , 2, FALL_THROUGH | BRANCH); + def(IF_ICMPLE , "if_icmple" , "boo" , 2, FALL_THROUGH | BRANCH); + def(IF_ACMPEQ , "if_acmpeq" , "boo" , 2, COMMUTATIVE | FALL_THROUGH | BRANCH); + def(IF_ACMPNE , "if_acmpne" , "boo" , 2, COMMUTATIVE | FALL_THROUGH | BRANCH); + def(GOTO , "goto" , "boo" , 1, STOP | BRANCH); + def(JSR , "jsr" , "boo" , 0, STOP | BRANCH); + def(RET , "ret" , "bi" , 0, STOP); + def(TABLESWITCH , "tableswitch" , "" , 4, STOP); + def(LOOKUPSWITCH , "lookupswitch" , "" , 4, STOP); + def(IRETURN , "ireturn" , "b" , 1, TRAP | STOP); + def(LRETURN , "lreturn" , "b" , 1, TRAP | STOP); + def(FRETURN , "freturn" , "b" , 1, TRAP | STOP); + def(DRETURN , "dreturn" , "b" , 1, TRAP | STOP); + def(ARETURN , "areturn" , "b" , 1, TRAP | STOP); + def(RETURN , "return" , "b" , 1, TRAP | STOP); + def(GETSTATIC , "getstatic" , "bjj" , 2, TRAP | FIELD_READ); + def(PUTSTATIC , "putstatic" , "bjj" , 2, TRAP | FIELD_WRITE); + def(GETFIELD , "getfield" , "bjj" , 2, TRAP | FIELD_READ); + def(PUTFIELD , "putfield" , "bjj" , 2, TRAP | FIELD_WRITE); + def(INVOKEVIRTUAL , "invokevirtual" , "bjj" , 7, TRAP | INVOKE); + def(INVOKESPECIAL , "invokespecial" , "bjj" , 5, TRAP | INVOKE); + def(INVOKESTATIC , "invokestatic" , "bjj" , 5, TRAP | INVOKE); + def(INVOKEINTERFACE , "invokeinterface" , "bjja_", 7, TRAP | INVOKE); + def(XXXUNUSEDXXX , "xxxunusedxxx" , "" , 0); + def(NEW , "new" , "bii" , 6, TRAP); + def(NEWARRAY , "newarray" , "bc" , 6, TRAP); + def(ANEWARRAY , "anewarray" , "bii" , 6, TRAP); + def(ARRAYLENGTH , "arraylength" , "b" , 2, TRAP); + def(ATHROW , "athrow" , "b" , 5, TRAP | STOP); + def(CHECKCAST , "checkcast" , "bii" , 3, TRAP); + def(INSTANCEOF , "instanceof" , "bii" , 4, TRAP); + def(MONITORENTER , "monitorenter" , "b" , 5, TRAP); + def(MONITOREXIT , "monitorexit" , "b" , 5, TRAP); + def(WIDE , "wide" , "" , 0); + def(MULTIANEWARRAY , "multianewarray" , "biic" , 6, TRAP); + def(IFNULL , "ifnull" , "boo" , 2, FALL_THROUGH | BRANCH); + def(IFNONNULL , "ifnonnull" , "boo" , 2, FALL_THROUGH | BRANCH); + def(GOTO_W , "goto_w" , "boooo", 1, STOP | BRANCH); + def(JSR_W , "jsr_w" , "boooo", 0, STOP | BRANCH); + def(BREAKPOINT , "breakpoint" , "b" , 0, TRAP); + } + // Checkstyle: resume + + /** + * Determines if an opcode is commutative. + * @param opcode the opcode to check + * @return {@code true} iff commutative + */ + public static boolean isCommutative(int opcode) { + return (flagsArray[opcode & 0xff] & COMMUTATIVE) != 0; + } + + /** + * Gets the length of an instruction denoted by a given opcode. + * + * @param opcode an instruction opcode + * @return the length of the instruction denoted by {@code opcode}. If {@code opcode} is an illegal instruction or denotes a + * variable length instruction (e.g. {@link #TABLESWITCH}), then 0 is returned. + */ + public static int lengthOf(int opcode) { + return lengthArray[opcode & 0xff]; + } + + /** + * Gets the compilation complexity for a given opcode. + * @param opcode an opcode + * @return a value >= 0 + */ + public static int compilationComplexity(int opcode) { + return compilationComplexityArray[opcode & 0xff]; + } + + /** + * Gets the lower-case mnemonic for a given opcode. + * + * @param opcode an opcode + * @return the mnemonic for {@code opcode} or {@code "<illegal opcode: " + opcode + ">"} if {@code opcode} is not a legal opcode + */ + public static String nameOf(int opcode) throws IllegalArgumentException { + String name = nameArray[opcode & 0xff]; + if (name == null) { + return "<illegal opcode: " + opcode + ">"; + } + return name; + } + + /** + * Allocation-free version of {@linkplain #nameOf(int)}. + * @param opcode an opcode. + * @return the mnemonic for {@code opcode} or {@code "<illegal opcode>"} if {@code opcode} is not a legal opcode. + */ + public static String baseNameOf(int opcode) { + String name = nameArray[opcode & 0xff]; + if (name == null) { + return "<illegal opcode>"; + } + return name; + } + + /** + * Gets the opcode corresponding to a given mnemonic. + * + * @param name an opcode mnemonic + * @return the opcode corresponding to {@code mnemonic} + * @throws IllegalArgumentException if {@code name} does not denote a valid opcode + */ + public static int valueOf(String name) { + for (int opcode = 0; opcode < nameArray.length; ++opcode) { + if (name.equalsIgnoreCase(nameArray[opcode])) { + return opcode; + } + } + throw new IllegalArgumentException("No opcode for " + name); + } + + /** + * Determines if a given opcode denotes an instruction that can cause an implicit exception. + * + * @param opcode an opcode to test + * @return {@code true} iff {@code opcode} can cause an implicit exception, {@code false} otherwise + */ + public static boolean canTrap(int opcode) { + return (flagsArray[opcode & 0xff] & TRAP) != 0; + } + + /** + * Determines if a given opcode denotes an instruction that loads a local variable to the operand stack. + * + * @param opcode an opcode to test + * @return {@code true} iff {@code opcode} loads a local variable to the operand stack, {@code false} otherwise + */ + public static boolean isLoad(int opcode) { + return (flagsArray[opcode & 0xff] & LOAD) != 0; + } + + /** + * Determines if a given opcode denotes an instruction that ends a basic block and does not let control flow fall + * through to its lexical successor. + * + * @param opcode an opcode to test + * @return {@code true} iff {@code opcode} properly ends a basic block + */ + public static boolean isStop(int opcode) { + return (flagsArray[opcode & 0xff] & STOP) != 0; + } + + /** + * Determines if a given opcode denotes an instruction that stores a value to a local variable + * after popping it from the operand stack. + * + * @param opcode an opcode to test + * @return {@code true} iff {@code opcode} stores a value to a local variable, {@code false} otherwise + */ + public static boolean isInvoke(int opcode) { + return (flagsArray[opcode & 0xff] & INVOKE) != 0; + } + + /** + * Determines if a given opcode denotes an instruction that stores a value to a local variable + * after popping it from the operand stack. + * + * @param opcode an opcode to test + * @return {@code true} iff {@code opcode} stores a value to a local variable, {@code false} otherwise + */ + public static boolean isStore(int opcode) { + return (flagsArray[opcode & 0xff] & STORE) != 0; + } + + /** + * Determines if a given opcode is an instruction that delimits a basic block. + * + * @param opcode an opcode to test + * @return {@code true} iff {@code opcode} delimits a basic block + */ + public static boolean isBlockEnd(int opcode) { + return (flagsArray[opcode & 0xff] & (STOP | FALL_THROUGH)) != 0; + } + + /** + * Determines if a given opcode is an instruction that has a 2 or 4 byte operand that is an offset to another + * instruction in the same method. This does not include the {@linkplain #TABLESWITCH switch} instructions. + * + * @param opcode an opcode to test + * @return {@code true} iff {@code opcode} is a branch instruction with a single operand + */ + public static boolean isBranch(int opcode) { + return (flagsArray[opcode & 0xff] & BRANCH) != 0; + } + + /** + * Determines if a given opcode denotes a conditional branch. + * @param opcode + * @return {@code true} iff {@code opcode} is a conditional branch + */ + public static boolean isConditionalBranch(int opcode) { + return (flagsArray[opcode & 0xff] & FALL_THROUGH) != 0; + } + + /** + * Determines if a given opcode denotes a standard bytecode. A standard bytecode is + * defined in the JVM specification. + * + * @param opcode an opcode to test + * @return {@code true} iff {@code opcode} is a standard bytecode + */ + public static boolean isStandard(int opcode) { + return (flagsArray[opcode & 0xff] & EXTENSION) == 0; + } + + /** + * Determines if a given opcode denotes an extended bytecode. + * + * @param opcode an opcode to test + * @return {@code true} if {@code opcode} is an extended bytecode + */ + public static boolean isExtended(int opcode) { + return (flagsArray[opcode & 0xff] & EXTENSION) != 0; + } + + /** + * Determines if a given opcode is a three-byte extended bytecode. + * + * @param opcode an opcode to test + * @return {@code true} if {@code (opcode & ~0xff) != 0} + */ + public static boolean isThreeByteExtended(int opcode) { + return (opcode & ~0xff) != 0; + } + + /** + * Gets the arithmetic operator name for a given opcode. If {@code opcode} does not denote an + * arithmetic instruction, then the {@linkplain #nameOf(int) name} of the opcode is returned + * instead. + * + * @param op an opcode + * @return the arithmetic operator name + */ + public static String operator(int op) { + // Checkstyle: stop + switch (op) { + // arithmetic ops + case IADD : // fall through + case LADD : // fall through + case FADD : // fall through + case DADD : return "+"; + case ISUB : // fall through + case LSUB : // fall through + case FSUB : // fall through + case DSUB : return "-"; + case IMUL : // fall through + case LMUL : // fall through + case FMUL : // fall through + case DMUL : return "*"; + case IDIV : // fall through + case LDIV : // fall through + case FDIV : // fall through + case DDIV : return "/"; + case IREM : // fall through + case LREM : // fall through + case FREM : // fall through + case DREM : return "%"; + // shift ops + case ISHL : // fall through + case LSHL : return "<<"; + case ISHR : // fall through + case LSHR : return ">>"; + case IUSHR: // fall through + case LUSHR: return ">>>"; + // logic ops + case IAND : // fall through + case LAND : return "&"; + case IOR : // fall through + case LOR : return "|"; + case IXOR : // fall through + case LXOR : return "^"; + } + // Checkstyle: resume + return nameOf(op); + } + + /** + * Defines a bytecode by entering it into the arrays that record its name, length and flags. + * + * @param name instruction name (should be lower case) + * @param format encodes the length of the instruction + * @param flagsArray the set of {@link Flags} associated with the instruction + */ + private static void def(int opcode, String name, String format, int compilationComplexity) { + def(opcode, name, format, compilationComplexity, 0); + } + + /** + * Defines a bytecode by entering it into the arrays that record its name, length and flags. + * + * @param name instruction name (lower case) + * @param format encodes the length of the instruction + * @param flags the set of {@link Flags} associated with the instruction + */ + private static void def(int opcode, String name, String format, int compilationComplexity, int flags) { + assert nameArray[opcode] == null : "opcode " + opcode + " is already bound to name " + nameArray[opcode]; + nameArray[opcode] = name; + int instructionLength = format.length(); + lengthArray[opcode] = instructionLength; + compilationComplexityArray[opcode] = compilationComplexity; + Bytecodes.flagsArray[opcode] = flags; + + assert !isConditionalBranch(opcode) || isBranch(opcode) : "a conditional branch must also be a branch"; + } + + /** + * Utility for ensuring that the extended opcodes are contiguous and follow on directly + * from the standard JVM opcodes. If these conditions do not hold for the input source + * file, then it is modified 'in situ' to fix the problem. + * + * @param args {@code args[0]} is the path to this source file + */ + public static void main(String[] args) throws Exception { + Method findWorkspaceDirectory = Class.forName("com.sun.max.ide.JavaProject").getDeclaredMethod("findWorkspaceDirectory"); + File base = new File((File) findWorkspaceDirectory.invoke(null), "com.oracle.max.cri/src"); + File file = new File(base, Bytecodes.class.getName().replace('.', File.separatorChar) + ".java").getAbsoluteFile(); + + Pattern opcodeDecl = Pattern.compile("(\\s*public static final int )(\\w+)(\\s*=\\s*)(\\d+)(;.*)"); + + BufferedReader br = new BufferedReader(new FileReader(file)); + CharArrayWriter buffer = new CharArrayWriter((int) file.length()); + PrintWriter out = new PrintWriter(buffer); + String line; + int lastExtendedOpcode = BREAKPOINT; + boolean modified = false; + int section = 0; + while ((line = br.readLine()) != null) { + if (section == 0) { + if (line.equals(" // Start extended bytecodes")) { + section = 1; + } + } else if (section == 1) { + if (line.equals(" // End extended bytecodes")) { + section = 2; + } else { + Matcher matcher = opcodeDecl.matcher(line); + if (matcher.matches()) { + String name = matcher.group(2); + String value = matcher.group(4); + int opcode = Integer.parseInt(value); + if (nameArray[opcode] == null || !nameArray[opcode].equalsIgnoreCase(name)) { + throw new RuntimeException("Missing definition of name and flags for " + opcode + ":" + name + " -- " + nameArray[opcode]); + } + if (opcode != lastExtendedOpcode + 1) { + System.err.println("Fixed declaration of opcode " + name + " to be " + (lastExtendedOpcode + 1) + " (was " + value + ")"); + opcode = lastExtendedOpcode + 1; + line = line.substring(0, matcher.start(4)) + opcode + line.substring(matcher.end(4)); + modified = true; + } + + if (opcode >= 256) { + throw new RuntimeException("Exceeded maximum opcode value with " + name); + } + + lastExtendedOpcode = opcode; + } + } + } + + out.println(line); + } + if (section == 0) { + throw new RuntimeException("Did not find line starting extended bytecode declarations:\n\n // Start extended bytecodes"); + } else if (section == 1) { + throw new RuntimeException("Did not find line ending extended bytecode declarations:\n\n // End extended bytecodes"); + } + + if (modified) { + out.flush(); + FileWriter fileWriter = new FileWriter(file); + fileWriter.write(buffer.toCharArray()); + fileWriter.close(); + + System.out.println("Modified: " + file); + } + + + // Uncomment to print out visitor method declarations: +// for (int opcode = 0; opcode < flags.length; ++opcode) { +// if (isExtension(opcode)) { +// String visitorParams = length(opcode) == 1 ? "" : "int index"; +// System.out.println("@Override"); +// System.out.println("protected void " + name(opcode) + "(" + visitorParams + ") {"); +// System.out.println("}"); +// System.out.println(); +// } +// } + + // Uncomment to print out visitor method declarations: +// for (int opcode = 0; opcode < flags.length; ++opcode) { +// if (isExtension(opcode)) { +// System.out.println("case " + name(opcode).toUpperCase() + ": {"); +// String arg = ""; +// int length = length(opcode); +// if (length == 2) { +// arg = "readUnsigned1()"; +// } else if (length == 3) { +// arg = "readUnsigned2()"; +// } +// System.out.println(" bytecodeVisitor." + name(opcode) + "(" + arg + ");"); +// System.out.println(" break;"); +// System.out.println("}"); +// } +// } + + } +}
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/graal/com.oracle.graal.bytecode/src/com/oracle/graal/bytecode/Bytes.java Mon Jun 11 13:51:34 2012 +0200 @@ -0,0 +1,93 @@ +/* + * Copyright (c) 2009, 2011, 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. + */ +package com.oracle.graal.bytecode; + +/** + * A collection of utility methods for dealing with bytes, particularly in byte arrays. + */ +public class Bytes { + /** + * Gets a signed 1-byte value. + * @param data the array containing the data + * @param bci the start index of the value to retrieve + * @return the signed 1-byte value at index {@code bci} in array {@code data} + */ + public static int beS1(byte[] data, int bci) { + return data[bci]; + } + + /** + * Gets a signed 2-byte big-endian value. + * @param data the array containing the data + * @param bci the start index of the value to retrieve + * @return the signed 2-byte, big-endian, value at index {@code bci} in array {@code data} + */ + public static int beS2(byte[] data, int bci) { + return (data[bci] << 8) | (data[bci + 1] & 0xff); + } + + /** + * Gets an unsigned 1-byte value. + * @param data the array containing the data + * @param bci the start index of the value to retrieve + * @return the unsigned 1-byte value at index {@code bci} in array {@code data} + */ + public static int beU1(byte[] data, int bci) { + return data[bci] & 0xff; + } + + /** + * Gets an unsigned 2-byte big-endian value. + * @param data the array containing the data + * @param bci the start index of the value to retrieve + * @return the unsigned 2-byte, big-endian, value at index {@code bci} in array {@code data} + */ + public static int beU2(byte[] data, int bci) { + return ((data[bci] & 0xff) << 8) | (data[bci + 1] & 0xff); + } + + /** + * Gets a signed 4-byte big-endian value. + * @param data the array containing the data + * @param bci the start index of the value to retrieve + * @return the signed 4-byte, big-endian, value at index {@code bci} in array {@code data} + */ + public static int beS4(byte[] data, int bci) { + return (data[bci] << 24) | ((data[bci + 1] & 0xff) << 16) | ((data[bci + 2] & 0xff) << 8) | (data[bci + 3] & 0xff); + } + + /** + * Gets either a signed 2-byte or a signed 4-byte big-endian value. + * @param data the array containing the data + * @param bci the start index of the value to retrieve + * @param fourByte if true, this method will return a 4-byte value + * @return the signed 2 or 4-byte, big-endian, value at index {@code bci} in array {@code data} + */ + public static int beSVar(byte[] data, int bci, boolean fourByte) { + if (fourByte) { + return beS4(data, bci); + } else { + return beS2(data, bci); + } + } +}
--- a/graal/com.oracle.graal.hotspot/src/com/oracle/graal/hotspot/meta/HotSpotResolvedJavaMethod.java Mon Jun 11 13:26:37 2012 +0200 +++ b/graal/com.oracle.graal.hotspot/src/com/oracle/graal/hotspot/meta/HotSpotResolvedJavaMethod.java Mon Jun 11 13:51:34 2012 +0200 @@ -30,10 +30,10 @@ import com.oracle.graal.api.code.*; import com.oracle.graal.api.meta.*; +import com.oracle.graal.bytecode.*; import com.oracle.graal.compiler.*; import com.oracle.graal.hotspot.*; import com.oracle.graal.hotspot.counters.*; -import com.oracle.graal.java.bytecode.*; import com.oracle.max.criutils.*; /**
--- a/graal/com.oracle.graal.java/src/com/oracle/graal/java/BciBlockMapping.java Mon Jun 11 13:26:37 2012 +0200 +++ b/graal/com.oracle.graal.java/src/com/oracle/graal/java/BciBlockMapping.java Mon Jun 11 13:51:34 2012 +0200 @@ -22,15 +22,15 @@ */ package com.oracle.graal.java; -import static com.oracle.graal.java.bytecode.Bytecodes.*; +import static com.oracle.graal.bytecode.Bytecodes.*; import java.util.*; import com.oracle.graal.api.code.*; import com.oracle.graal.api.meta.*; +import com.oracle.graal.bytecode.*; import com.oracle.graal.compiler.*; import com.oracle.graal.debug.*; -import com.oracle.graal.java.bytecode.*; import com.oracle.graal.nodes.*; /**
--- a/graal/com.oracle.graal.java/src/com/oracle/graal/java/GraphBuilderPhase.java Mon Jun 11 13:26:37 2012 +0200 +++ b/graal/com.oracle.graal.java/src/com/oracle/graal/java/GraphBuilderPhase.java Mon Jun 11 13:51:34 2012 +0200 @@ -22,7 +22,7 @@ */ package com.oracle.graal.java; -import static com.oracle.graal.java.bytecode.Bytecodes.*; +import static com.oracle.graal.bytecode.Bytecodes.*; import static java.lang.reflect.Modifier.*; import java.lang.reflect.*; @@ -32,6 +32,7 @@ import com.oracle.graal.api.meta.*; import com.oracle.graal.api.meta.JavaType.*; import com.oracle.graal.api.meta.JavaTypeProfile.*; +import com.oracle.graal.bytecode.*; import com.oracle.graal.compiler.*; import com.oracle.graal.compiler.phases.*; import com.oracle.graal.compiler.util.*; @@ -39,7 +40,6 @@ import com.oracle.graal.graph.*; import com.oracle.graal.java.BciBlockMapping.Block; import com.oracle.graal.java.BciBlockMapping.ExceptionDispatchBlock; -import com.oracle.graal.java.bytecode.*; import com.oracle.graal.nodes.*; import com.oracle.graal.nodes.calc.*; import com.oracle.graal.nodes.extended.*;
--- a/graal/com.oracle.graal.java/src/com/oracle/graal/java/bytecode/BytecodeLookupSwitch.java Mon Jun 11 13:26:37 2012 +0200 +++ /dev/null Thu Jan 01 00:00:00 1970 +0000 @@ -1,67 +0,0 @@ -/* - * Copyright (c) 2009, 2011, 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. - */ -package com.oracle.graal.java.bytecode; - -/** - * A utility for processing {@link Bytecodes#LOOKUPSWITCH} bytecodes. - */ -public class BytecodeLookupSwitch extends BytecodeSwitch { - private static final int OFFSET_TO_NUMBER_PAIRS = 4; - private static final int OFFSET_TO_FIRST_PAIR_MATCH = 8; - private static final int OFFSET_TO_FIRST_PAIR_OFFSET = 12; - private static final int PAIR_SIZE = 8; - - /** - * Constructor for a {@link BytecodeStream}. - * @param stream the {@code BytecodeStream} containing the switch instruction - * @param bci the index in the stream of the switch instruction - */ - public BytecodeLookupSwitch(BytecodeStream stream, int bci) { - super(stream, bci); - } - - @Override - public int defaultOffset() { - return stream.readInt(alignedBci); - } - - @Override - public int offsetAt(int i) { - return stream.readInt(alignedBci + OFFSET_TO_FIRST_PAIR_OFFSET + PAIR_SIZE * i); - } - - @Override - public int keyAt(int i) { - return stream.readInt(alignedBci + OFFSET_TO_FIRST_PAIR_MATCH + PAIR_SIZE * i); - } - - @Override - public int numberOfCases() { - return stream.readInt(alignedBci + OFFSET_TO_NUMBER_PAIRS); - } - - @Override - public int size() { - return alignedBci + OFFSET_TO_FIRST_PAIR_MATCH + PAIR_SIZE * numberOfCases() - bci; - } -}
--- a/graal/com.oracle.graal.java/src/com/oracle/graal/java/bytecode/BytecodeStream.java Mon Jun 11 13:26:37 2012 +0200 +++ /dev/null Thu Jan 01 00:00:00 1970 +0000 @@ -1,224 +0,0 @@ -/* - * Copyright (c) 2009, 2011, 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. - */ -package com.oracle.graal.java.bytecode; - - -/** - * A utility class that makes iterating over bytecodes and reading operands - * simpler and less error prone. For example, it handles the {@link Bytecodes#WIDE} instruction - * and wide variants of instructions internally. - */ -public final class BytecodeStream { - - private final byte[] code; - private int opcode; - private int curBCI; - private int nextBCI; - - /** - * Creates a new {@code BytecodeStream} for the specified bytecode. - * @param code the array of bytes that contains the bytecode - */ - public BytecodeStream(byte[] code) { - assert code != null; - this.code = code; - setBCI(0); - } - - /** - * Advances to the next bytecode. - */ - public void next() { - setBCI(nextBCI); - } - - /** - * Gets the next bytecode index (no side-effects). - * @return the next bytecode index - */ - public int nextBCI() { - return nextBCI; - } - - /** - * Gets the current bytecode index. - * @return the current bytecode index - */ - public int currentBCI() { - return curBCI; - } - - /** - * Gets the bytecode index of the end of the code. - * @return the index of the end of the code - */ - public int endBCI() { - return code.length; - } - - /** - * Gets the current opcode. This method will never return the - * {@link Bytecodes#WIDE WIDE} opcode, but will instead - * return the opcode that is modified by the {@code WIDE} opcode. - * @return the current opcode; {@link Bytecodes#END} if at or beyond the end of the code - */ - public int currentBC() { - if (opcode == Bytecodes.WIDE) { - return Bytes.beU1(code, curBCI + 1); - } else { - return opcode; - } - } - - /** - * Reads the index of a local variable for one of the load or store instructions. - * The WIDE modifier is handled internally. - * @return the index of the local variable - */ - public int readLocalIndex() { - // read local variable index for load/store - if (opcode == Bytecodes.WIDE) { - return Bytes.beU2(code, curBCI + 2); - } - return Bytes.beU1(code, curBCI + 1); - } - - /** - * Read the delta for an {@link Bytecodes#IINC} bytecode. - * @return the delta for the {@code IINC} - */ - public int readIncrement() { - // read the delta for the iinc bytecode - if (opcode == Bytecodes.WIDE) { - return Bytes.beS2(code, curBCI + 4); - } - return Bytes.beS1(code, curBCI + 2); - } - - /** - * Read the destination of a {@link Bytecodes#GOTO} or {@code IF} instructions. - * @return the destination bytecode index - */ - public int readBranchDest() { - // reads the destination for a branch bytecode - if (opcode == Bytecodes.GOTO_W || opcode == Bytecodes.JSR_W) { - return curBCI + Bytes.beS4(code, curBCI + 1); - } else { - return curBCI + Bytes.beS2(code, curBCI + 1); - } - } - - /** - * Read a signed 4-byte integer from the bytecode stream at the specified bytecode index. - * @param bci the bytecode index - * @return the integer value - */ - public int readInt(int bci) { - // reads a 4-byte signed value - return Bytes.beS4(code, bci); - } - - /** - * Reads an unsigned, 1-byte value from the bytecode stream at the specified bytecode index. - * @param bci the bytecode index - * @return the byte - */ - public int readUByte(int bci) { - return Bytes.beU1(code, bci); - } - - /** - * Reads a constant pool index for the current instruction. - * @return the constant pool index - */ - public char readCPI() { - if (opcode == Bytecodes.LDC) { - return (char) Bytes.beU1(code, curBCI + 1); - } - return (char) Bytes.beU2(code, curBCI + 1); - } - - /** - * Reads a signed, 1-byte value for the current instruction (e.g. BIPUSH). - * @return the byte - */ - public byte readByte() { - return code[curBCI + 1]; - } - - /** - * Reads a signed, 2-byte short for the current instruction (e.g. SIPUSH). - * @return the short value - */ - public short readShort() { - return (short) Bytes.beS2(code, curBCI + 1); - } - - /** - * Sets the bytecode index to the specified value. - * If {@code bci} is beyond the end of the array, {@link #currentBC} will return - * {@link Bytecodes#END} and other methods may throw {@link ArrayIndexOutOfBoundsException}. - * @param bci the new bytecode index - */ - public void setBCI(int bci) { - curBCI = bci; - if (curBCI < code.length) { - opcode = Bytes.beU1(code, bci); - assert opcode < Bytecodes.BREAKPOINT : "illegal bytecode"; - nextBCI = bci + lengthOf(); - } else { - opcode = Bytecodes.END; - nextBCI = curBCI; - } - } - - /** - * Gets the length of the current bytecode. - */ - private int lengthOf() { - int length = Bytecodes.lengthOf(opcode); - if (length == 0) { - switch (opcode) { - case Bytecodes.TABLESWITCH: { - return new BytecodeTableSwitch(this, curBCI).size(); - } - case Bytecodes.LOOKUPSWITCH: { - return new BytecodeLookupSwitch(this, curBCI).size(); - } - case Bytecodes.WIDE: { - int opc = Bytes.beU1(code, curBCI + 1); - if (opc == Bytecodes.RET) { - return 4; - } else if (opc == Bytecodes.IINC) { - return 6; - } else { - return 4; // a load or store bytecode - } - } - default: - throw new Error("unknown variable-length bytecode: " + opcode); - } - } - return length; - } -}
--- a/graal/com.oracle.graal.java/src/com/oracle/graal/java/bytecode/BytecodeSwitch.java Mon Jun 11 13:26:37 2012 +0200 +++ /dev/null Thu Jan 01 00:00:00 1970 +0000 @@ -1,110 +0,0 @@ -/* - * Copyright (c) 2009, 2011, 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. - */ -package com.oracle.graal.java.bytecode; - -/** - * An abstract class that provides the state and methods common to {@link Bytecodes#LOOKUPSWITCH} - * and {@link Bytecodes#TABLESWITCH} instructions. - */ -public abstract class BytecodeSwitch { - /** - * The {@link BytecodeStream} containing the bytecode array. - */ - protected final BytecodeStream stream; - /** - * Index of start of switch instruction. - */ - protected final int bci; - /** - * Index of the start of the additional data for the switch instruction, aligned to a multiple of four from the method start. - */ - protected final int alignedBci; - - /** - * Constructor for a {@link BytecodeStream}. - * @param stream the {@code BytecodeStream} containing the switch instruction - * @param bci the index in the stream of the switch instruction - */ - public BytecodeSwitch(BytecodeStream stream, int bci) { - this.stream = stream; - this.bci = bci; - this.alignedBci = (bci + 4) & 0xfffffffc; - } - - /** - * Gets the current bytecode index. - * @return the current bytecode index - */ - public int bci() { - return bci; - } - - /** - * Gets the index of the instruction denoted by the {@code i}'th switch target. - * @param i index of the switch target - * @return the index of the instruction denoted by the {@code i}'th switch target - */ - public int targetAt(int i) { - return bci + offsetAt(i); - } - - /** - * Gets the index of the instruction for the default switch target. - * @return the index of the instruction for the default switch target - */ - public int defaultTarget() { - return bci + defaultOffset(); - } - - /** - * Gets the offset from the start of the switch instruction to the default switch target. - * @return the offset to the default switch target - */ - public abstract int defaultOffset(); - - /** - * Gets the key at {@code i}'th switch target index. - * @param i the switch target index - * @return the key at {@code i}'th switch target index - */ - public abstract int keyAt(int i); - - /** - * Gets the offset from the start of the switch instruction for the {@code i}'th switch target. - * @param i the switch target index - * @return the offset to the {@code i}'th switch target - */ - public abstract int offsetAt(int i); - - /** - * Gets the number of switch targets. - * @return the number of switch targets - */ - public abstract int numberOfCases(); - - /** - * Gets the total size in bytes of the switch instruction. - * @return the total size in bytes of the switch instruction - */ - public abstract int size(); -}
--- a/graal/com.oracle.graal.java/src/com/oracle/graal/java/bytecode/BytecodeTableSwitch.java Mon Jun 11 13:26:37 2012 +0200 +++ /dev/null Thu Jan 01 00:00:00 1970 +0000 @@ -1,83 +0,0 @@ -/* - * Copyright (c) 2009, 2011, 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. - */ -package com.oracle.graal.java.bytecode; - -/** - * A utility for processing {@link Bytecodes#TABLESWITCH} bytecodes. - */ -public class BytecodeTableSwitch extends BytecodeSwitch { - private static final int OFFSET_TO_LOW_KEY = 4; - private static final int OFFSET_TO_HIGH_KEY = 8; - private static final int OFFSET_TO_FIRST_JUMP_OFFSET = 12; - private static final int JUMP_OFFSET_SIZE = 4; - - /** - * Constructor for a {@link BytecodeStream}. - * @param stream the {@code BytecodeStream} containing the switch instruction - * @param bci the index in the stream of the switch instruction - */ - public BytecodeTableSwitch(BytecodeStream stream, int bci) { - super(stream, bci); - } - - /** - * Gets the low key of the table switch. - * @return the low key - */ - public int lowKey() { - return stream.readInt(alignedBci + OFFSET_TO_LOW_KEY); - } - - /** - * Gets the high key of the table switch. - * @return the high key - */ - public int highKey() { - return stream.readInt(alignedBci + OFFSET_TO_HIGH_KEY); - } - - @Override - public int keyAt(int i) { - return lowKey() + i; - } - - @Override - public int defaultOffset() { - return stream.readInt(alignedBci); - } - - @Override - public int offsetAt(int i) { - return stream.readInt(alignedBci + OFFSET_TO_FIRST_JUMP_OFFSET + JUMP_OFFSET_SIZE * i); - } - - @Override - public int numberOfCases() { - return highKey() - lowKey() + 1; - } - - @Override - public int size() { - return alignedBci + OFFSET_TO_FIRST_JUMP_OFFSET + JUMP_OFFSET_SIZE * numberOfCases() - bci; - } -}
--- a/graal/com.oracle.graal.java/src/com/oracle/graal/java/bytecode/Bytecodes.java Mon Jun 11 13:26:37 2012 +0200 +++ /dev/null Thu Jan 01 00:00:00 1970 +0000 @@ -1,940 +0,0 @@ -/* - * Copyright (c) 2009, 2011, 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. - */ -package com.oracle.graal.java.bytecode; - -import static com.oracle.graal.java.bytecode.Bytecodes.Flags.*; - -import java.io.*; -import java.lang.reflect.*; -import java.util.regex.*; - -/** - * The definitions of the bytecodes that are valid input to the compiler and - * related utility methods. This comprises two groups: the standard Java - * bytecodes defined by <a href= - * "http://java.sun.com/docs/books/jvms/second_edition/html/VMSpecTOC.doc.html"> - * Java Virtual Machine Specification</a>, and a set of <i>extended</i> - * bytecodes that support low-level programming, for example, memory barriers. - * - * The extended bytecodes are one or three bytes in size. The one-byte bytecodes - * follow the values in the standard set, with no gap. The three-byte extended - * bytecodes share a common first byte and carry additional instruction-specific - * information in the second and third bytes. - */ -public class Bytecodes { - public static final int NOP = 0; // 0x00 - public static final int ACONST_NULL = 1; // 0x01 - public static final int ICONST_M1 = 2; // 0x02 - public static final int ICONST_0 = 3; // 0x03 - public static final int ICONST_1 = 4; // 0x04 - public static final int ICONST_2 = 5; // 0x05 - public static final int ICONST_3 = 6; // 0x06 - public static final int ICONST_4 = 7; // 0x07 - public static final int ICONST_5 = 8; // 0x08 - public static final int LCONST_0 = 9; // 0x09 - public static final int LCONST_1 = 10; // 0x0A - public static final int FCONST_0 = 11; // 0x0B - public static final int FCONST_1 = 12; // 0x0C - public static final int FCONST_2 = 13; // 0x0D - public static final int DCONST_0 = 14; // 0x0E - public static final int DCONST_1 = 15; // 0x0F - public static final int BIPUSH = 16; // 0x10 - public static final int SIPUSH = 17; // 0x11 - public static final int LDC = 18; // 0x12 - public static final int LDC_W = 19; // 0x13 - public static final int LDC2_W = 20; // 0x14 - public static final int ILOAD = 21; // 0x15 - public static final int LLOAD = 22; // 0x16 - public static final int FLOAD = 23; // 0x17 - public static final int DLOAD = 24; // 0x18 - public static final int ALOAD = 25; // 0x19 - public static final int ILOAD_0 = 26; // 0x1A - public static final int ILOAD_1 = 27; // 0x1B - public static final int ILOAD_2 = 28; // 0x1C - public static final int ILOAD_3 = 29; // 0x1D - public static final int LLOAD_0 = 30; // 0x1E - public static final int LLOAD_1 = 31; // 0x1F - public static final int LLOAD_2 = 32; // 0x20 - public static final int LLOAD_3 = 33; // 0x21 - public static final int FLOAD_0 = 34; // 0x22 - public static final int FLOAD_1 = 35; // 0x23 - public static final int FLOAD_2 = 36; // 0x24 - public static final int FLOAD_3 = 37; // 0x25 - public static final int DLOAD_0 = 38; // 0x26 - public static final int DLOAD_1 = 39; // 0x27 - public static final int DLOAD_2 = 40; // 0x28 - public static final int DLOAD_3 = 41; // 0x29 - public static final int ALOAD_0 = 42; // 0x2A - public static final int ALOAD_1 = 43; // 0x2B - public static final int ALOAD_2 = 44; // 0x2C - public static final int ALOAD_3 = 45; // 0x2D - public static final int IALOAD = 46; // 0x2E - public static final int LALOAD = 47; // 0x2F - public static final int FALOAD = 48; // 0x30 - public static final int DALOAD = 49; // 0x31 - public static final int AALOAD = 50; // 0x32 - public static final int BALOAD = 51; // 0x33 - public static final int CALOAD = 52; // 0x34 - public static final int SALOAD = 53; // 0x35 - public static final int ISTORE = 54; // 0x36 - public static final int LSTORE = 55; // 0x37 - public static final int FSTORE = 56; // 0x38 - public static final int DSTORE = 57; // 0x39 - public static final int ASTORE = 58; // 0x3A - public static final int ISTORE_0 = 59; // 0x3B - public static final int ISTORE_1 = 60; // 0x3C - public static final int ISTORE_2 = 61; // 0x3D - public static final int ISTORE_3 = 62; // 0x3E - public static final int LSTORE_0 = 63; // 0x3F - public static final int LSTORE_1 = 64; // 0x40 - public static final int LSTORE_2 = 65; // 0x41 - public static final int LSTORE_3 = 66; // 0x42 - public static final int FSTORE_0 = 67; // 0x43 - public static final int FSTORE_1 = 68; // 0x44 - public static final int FSTORE_2 = 69; // 0x45 - public static final int FSTORE_3 = 70; // 0x46 - public static final int DSTORE_0 = 71; // 0x47 - public static final int DSTORE_1 = 72; // 0x48 - public static final int DSTORE_2 = 73; // 0x49 - public static final int DSTORE_3 = 74; // 0x4A - public static final int ASTORE_0 = 75; // 0x4B - public static final int ASTORE_1 = 76; // 0x4C - public static final int ASTORE_2 = 77; // 0x4D - public static final int ASTORE_3 = 78; // 0x4E - public static final int IASTORE = 79; // 0x4F - public static final int LASTORE = 80; // 0x50 - public static final int FASTORE = 81; // 0x51 - public static final int DASTORE = 82; // 0x52 - public static final int AASTORE = 83; // 0x53 - public static final int BASTORE = 84; // 0x54 - public static final int CASTORE = 85; // 0x55 - public static final int SASTORE = 86; // 0x56 - public static final int POP = 87; // 0x57 - public static final int POP2 = 88; // 0x58 - public static final int DUP = 89; // 0x59 - public static final int DUP_X1 = 90; // 0x5A - public static final int DUP_X2 = 91; // 0x5B - public static final int DUP2 = 92; // 0x5C - public static final int DUP2_X1 = 93; // 0x5D - public static final int DUP2_X2 = 94; // 0x5E - public static final int SWAP = 95; // 0x5F - public static final int IADD = 96; // 0x60 - public static final int LADD = 97; // 0x61 - public static final int FADD = 98; // 0x62 - public static final int DADD = 99; // 0x63 - public static final int ISUB = 100; // 0x64 - public static final int LSUB = 101; // 0x65 - public static final int FSUB = 102; // 0x66 - public static final int DSUB = 103; // 0x67 - public static final int IMUL = 104; // 0x68 - public static final int LMUL = 105; // 0x69 - public static final int FMUL = 106; // 0x6A - public static final int DMUL = 107; // 0x6B - public static final int IDIV = 108; // 0x6C - public static final int LDIV = 109; // 0x6D - public static final int FDIV = 110; // 0x6E - public static final int DDIV = 111; // 0x6F - public static final int IREM = 112; // 0x70 - public static final int LREM = 113; // 0x71 - public static final int FREM = 114; // 0x72 - public static final int DREM = 115; // 0x73 - public static final int INEG = 116; // 0x74 - public static final int LNEG = 117; // 0x75 - public static final int FNEG = 118; // 0x76 - public static final int DNEG = 119; // 0x77 - public static final int ISHL = 120; // 0x78 - public static final int LSHL = 121; // 0x79 - public static final int ISHR = 122; // 0x7A - public static final int LSHR = 123; // 0x7B - public static final int IUSHR = 124; // 0x7C - public static final int LUSHR = 125; // 0x7D - public static final int IAND = 126; // 0x7E - public static final int LAND = 127; // 0x7F - public static final int IOR = 128; // 0x80 - public static final int LOR = 129; // 0x81 - public static final int IXOR = 130; // 0x82 - public static final int LXOR = 131; // 0x83 - public static final int IINC = 132; // 0x84 - public static final int I2L = 133; // 0x85 - public static final int I2F = 134; // 0x86 - public static final int I2D = 135; // 0x87 - public static final int L2I = 136; // 0x88 - public static final int L2F = 137; // 0x89 - public static final int L2D = 138; // 0x8A - public static final int F2I = 139; // 0x8B - public static final int F2L = 140; // 0x8C - public static final int F2D = 141; // 0x8D - public static final int D2I = 142; // 0x8E - public static final int D2L = 143; // 0x8F - public static final int D2F = 144; // 0x90 - public static final int I2B = 145; // 0x91 - public static final int I2C = 146; // 0x92 - public static final int I2S = 147; // 0x93 - public static final int LCMP = 148; // 0x94 - public static final int FCMPL = 149; // 0x95 - public static final int FCMPG = 150; // 0x96 - public static final int DCMPL = 151; // 0x97 - public static final int DCMPG = 152; // 0x98 - public static final int IFEQ = 153; // 0x99 - public static final int IFNE = 154; // 0x9A - public static final int IFLT = 155; // 0x9B - public static final int IFGE = 156; // 0x9C - public static final int IFGT = 157; // 0x9D - public static final int IFLE = 158; // 0x9E - public static final int IF_ICMPEQ = 159; // 0x9F - public static final int IF_ICMPNE = 160; // 0xA0 - public static final int IF_ICMPLT = 161; // 0xA1 - public static final int IF_ICMPGE = 162; // 0xA2 - public static final int IF_ICMPGT = 163; // 0xA3 - public static final int IF_ICMPLE = 164; // 0xA4 - public static final int IF_ACMPEQ = 165; // 0xA5 - public static final int IF_ACMPNE = 166; // 0xA6 - public static final int GOTO = 167; // 0xA7 - public static final int JSR = 168; // 0xA8 - public static final int RET = 169; // 0xA9 - public static final int TABLESWITCH = 170; // 0xAA - public static final int LOOKUPSWITCH = 171; // 0xAB - public static final int IRETURN = 172; // 0xAC - public static final int LRETURN = 173; // 0xAD - public static final int FRETURN = 174; // 0xAE - public static final int DRETURN = 175; // 0xAF - public static final int ARETURN = 176; // 0xB0 - public static final int RETURN = 177; // 0xB1 - public static final int GETSTATIC = 178; // 0xB2 - public static final int PUTSTATIC = 179; // 0xB3 - public static final int GETFIELD = 180; // 0xB4 - public static final int PUTFIELD = 181; // 0xB5 - public static final int INVOKEVIRTUAL = 182; // 0xB6 - public static final int INVOKESPECIAL = 183; // 0xB7 - public static final int INVOKESTATIC = 184; // 0xB8 - public static final int INVOKEINTERFACE = 185; // 0xB9 - public static final int XXXUNUSEDXXX = 186; // 0xBA - public static final int NEW = 187; // 0xBB - public static final int NEWARRAY = 188; // 0xBC - public static final int ANEWARRAY = 189; // 0xBD - public static final int ARRAYLENGTH = 190; // 0xBE - public static final int ATHROW = 191; // 0xBF - public static final int CHECKCAST = 192; // 0xC0 - public static final int INSTANCEOF = 193; // 0xC1 - public static final int MONITORENTER = 194; // 0xC2 - public static final int MONITOREXIT = 195; // 0xC3 - public static final int WIDE = 196; // 0xC4 - public static final int MULTIANEWARRAY = 197; // 0xC5 - public static final int IFNULL = 198; // 0xC6 - public static final int IFNONNULL = 199; // 0xC7 - public static final int GOTO_W = 200; // 0xC8 - public static final int JSR_W = 201; // 0xC9 - public static final int BREAKPOINT = 202; // 0xCA - - public static final int ILLEGAL = 255; - public static final int END = 256; - - /** - * The last opcode defined by the JVM specification. To iterate over all JVM bytecodes: - * <pre> - * for (int opcode = 0; opcode <= Bytecodes.LAST_JVM_OPCODE; ++opcode) { - * // - * } - * </pre> - */ - public static final int LAST_JVM_OPCODE = JSR_W; - - /** - * A collection of flags describing various bytecode attributes. - */ - static class Flags { - - /** - * Denotes an instruction that ends a basic block and does not let control flow fall through to its lexical successor. - */ - static final int STOP = 0x00000001; - - /** - * Denotes an instruction that ends a basic block and may let control flow fall through to its lexical successor. - * In practice this means it is a conditional branch. - */ - static final int FALL_THROUGH = 0x00000002; - - /** - * Denotes an instruction that has a 2 or 4 byte operand that is an offset to another instruction in the same method. - * This does not include the {@link Bytecodes#TABLESWITCH} or {@link Bytecodes#LOOKUPSWITCH} instructions. - */ - static final int BRANCH = 0x00000004; - - /** - * Denotes an instruction that reads the value of a static or instance field. - */ - static final int FIELD_READ = 0x00000008; - - /** - * Denotes an instruction that writes the value of a static or instance field. - */ - static final int FIELD_WRITE = 0x00000010; - - /** - * Denotes an instruction that is not defined in the JVM specification. - */ - static final int EXTENSION = 0x00000020; - - /** - * Denotes an instruction that can cause a trap. - */ - static final int TRAP = 0x00000080; - /** - * Denotes an instruction that is commutative. - */ - static final int COMMUTATIVE = 0x00000100; - /** - * Denotes an instruction that is associative. - */ - static final int ASSOCIATIVE = 0x00000200; - /** - * Denotes an instruction that loads an operand. - */ - static final int LOAD = 0x00000400; - /** - * Denotes an instruction that stores an operand. - */ - static final int STORE = 0x00000800; - /** - * Denotes the 4 INVOKE* instructions. - */ - static final int INVOKE = 0x00001000; - } - - // Performs a sanity check that none of the flags overlap. - static { - int allFlags = 0; - try { - for (Field field : Flags.class.getDeclaredFields()) { - int flagsFilter = Modifier.FINAL | Modifier.STATIC; - if ((field.getModifiers() & flagsFilter) == flagsFilter && !field.isSynthetic()) { - assert field.getType() == int.class : "Field is not int : " + field; - final int flag = field.getInt(null); - assert flag != 0; - assert (flag & allFlags) == 0 : field.getName() + " has a value conflicting with another flag"; - allFlags |= flag; - } - } - } catch (Exception e) { - throw new InternalError(e.toString()); - } - } - - /** - * An array that maps from a bytecode value to a {@link String} for the corresponding instruction mnemonic. - * This will include the root instruction for the three-byte extended instructions. - */ - private static final String[] nameArray = new String[256]; - - /** - * An array that maps from a bytecode value to the set of {@link Flags} for the corresponding instruction. - */ - private static final int[] flagsArray = new int[256]; - - /** - * An array that maps from a bytecode value to the length in bytes for the corresponding instruction. - */ - private static final int[] lengthArray = new int[256]; - - /** - * An array that maps from a bytecode value to the estimated complexity of the bytecode in terms of generated machine code. - */ - private static final int[] compilationComplexityArray = new int[256]; - - // Checkstyle: stop - static { - def(NOP , "nop" , "b" , 0); - def(ACONST_NULL , "aconst_null" , "b" , 0); - def(ICONST_M1 , "iconst_m1" , "b" , 0); - def(ICONST_0 , "iconst_0" , "b" , 0); - def(ICONST_1 , "iconst_1" , "b" , 0); - def(ICONST_2 , "iconst_2" , "b" , 0); - def(ICONST_3 , "iconst_3" , "b" , 0); - def(ICONST_4 , "iconst_4" , "b" , 0); - def(ICONST_5 , "iconst_5" , "b" , 0); - def(LCONST_0 , "lconst_0" , "b" , 0); - def(LCONST_1 , "lconst_1" , "b" , 0); - def(FCONST_0 , "fconst_0" , "b" , 0); - def(FCONST_1 , "fconst_1" , "b" , 0); - def(FCONST_2 , "fconst_2" , "b" , 0); - def(DCONST_0 , "dconst_0" , "b" , 0); - def(DCONST_1 , "dconst_1" , "b" , 0); - def(BIPUSH , "bipush" , "bc" , 0); - def(SIPUSH , "sipush" , "bcc" , 0); - def(LDC , "ldc" , "bi" , 0, TRAP); - def(LDC_W , "ldc_w" , "bii" , 0, TRAP); - def(LDC2_W , "ldc2_w" , "bii" , 0, TRAP); - def(ILOAD , "iload" , "bi" , 0, LOAD); - def(LLOAD , "lload" , "bi" , 0, LOAD); - def(FLOAD , "fload" , "bi" , 0, LOAD); - def(DLOAD , "dload" , "bi" , 0, LOAD); - def(ALOAD , "aload" , "bi" , 0, LOAD); - def(ILOAD_0 , "iload_0" , "b" , 0, LOAD); - def(ILOAD_1 , "iload_1" , "b" , 0, LOAD); - def(ILOAD_2 , "iload_2" , "b" , 0, LOAD); - def(ILOAD_3 , "iload_3" , "b" , 0, LOAD); - def(LLOAD_0 , "lload_0" , "b" , 0, LOAD); - def(LLOAD_1 , "lload_1" , "b" , 0, LOAD); - def(LLOAD_2 , "lload_2" , "b" , 0, LOAD); - def(LLOAD_3 , "lload_3" , "b" , 0, LOAD); - def(FLOAD_0 , "fload_0" , "b" , 0, LOAD); - def(FLOAD_1 , "fload_1" , "b" , 0, LOAD); - def(FLOAD_2 , "fload_2" , "b" , 0, LOAD); - def(FLOAD_3 , "fload_3" , "b" , 0, LOAD); - def(DLOAD_0 , "dload_0" , "b" , 0, LOAD); - def(DLOAD_1 , "dload_1" , "b" , 0, LOAD); - def(DLOAD_2 , "dload_2" , "b" , 0, LOAD); - def(DLOAD_3 , "dload_3" , "b" , 0, LOAD); - def(ALOAD_0 , "aload_0" , "b" , 0, LOAD); - def(ALOAD_1 , "aload_1" , "b" , 0, LOAD); - def(ALOAD_2 , "aload_2" , "b" , 0, LOAD); - def(ALOAD_3 , "aload_3" , "b" , 0, LOAD); - def(IALOAD , "iaload" , "b" , 0, TRAP); - def(LALOAD , "laload" , "b" , 0, TRAP); - def(FALOAD , "faload" , "b" , 0, TRAP); - def(DALOAD , "daload" , "b" , 0, TRAP); - def(AALOAD , "aaload" , "b" , 0, TRAP); - def(BALOAD , "baload" , "b" , 0, TRAP); - def(CALOAD , "caload" , "b" , 0, TRAP); - def(SALOAD , "saload" , "b" , 0, TRAP); - def(ISTORE , "istore" , "bi" , 0, STORE); - def(LSTORE , "lstore" , "bi" , 0, STORE); - def(FSTORE , "fstore" , "bi" , 0, STORE); - def(DSTORE , "dstore" , "bi" , 0, STORE); - def(ASTORE , "astore" , "bi" , 0, STORE); - def(ISTORE_0 , "istore_0" , "b" , 0, STORE); - def(ISTORE_1 , "istore_1" , "b" , 0, STORE); - def(ISTORE_2 , "istore_2" , "b" , 0, STORE); - def(ISTORE_3 , "istore_3" , "b" , 0, STORE); - def(LSTORE_0 , "lstore_0" , "b" , 0, STORE); - def(LSTORE_1 , "lstore_1" , "b" , 0, STORE); - def(LSTORE_2 , "lstore_2" , "b" , 0, STORE); - def(LSTORE_3 , "lstore_3" , "b" , 0, STORE); - def(FSTORE_0 , "fstore_0" , "b" , 0, STORE); - def(FSTORE_1 , "fstore_1" , "b" , 0, STORE); - def(FSTORE_2 , "fstore_2" , "b" , 0, STORE); - def(FSTORE_3 , "fstore_3" , "b" , 0, STORE); - def(DSTORE_0 , "dstore_0" , "b" , 0, STORE); - def(DSTORE_1 , "dstore_1" , "b" , 0, STORE); - def(DSTORE_2 , "dstore_2" , "b" , 0, STORE); - def(DSTORE_3 , "dstore_3" , "b" , 0, STORE); - def(ASTORE_0 , "astore_0" , "b" , 0, STORE); - def(ASTORE_1 , "astore_1" , "b" , 0, STORE); - def(ASTORE_2 , "astore_2" , "b" , 0, STORE); - def(ASTORE_3 , "astore_3" , "b" , 0, STORE); - def(IASTORE , "iastore" , "b" , 3, TRAP); - def(LASTORE , "lastore" , "b" , 3, TRAP); - def(FASTORE , "fastore" , "b" , 3, TRAP); - def(DASTORE , "dastore" , "b" , 3, TRAP); - def(AASTORE , "aastore" , "b" , 4, TRAP); - def(BASTORE , "bastore" , "b" , 3, TRAP); - def(CASTORE , "castore" , "b" , 3, TRAP); - def(SASTORE , "sastore" , "b" , 3, TRAP); - def(POP , "pop" , "b" , 0); - def(POP2 , "pop2" , "b" , 0); - def(DUP , "dup" , "b" , 0); - def(DUP_X1 , "dup_x1" , "b" , 0); - def(DUP_X2 , "dup_x2" , "b" , 0); - def(DUP2 , "dup2" , "b" , 0); - def(DUP2_X1 , "dup2_x1" , "b" , 0); - def(DUP2_X2 , "dup2_x2" , "b" , 0); - def(SWAP , "swap" , "b" , 0); - def(IADD , "iadd" , "b" , 1, COMMUTATIVE | ASSOCIATIVE); - def(LADD , "ladd" , "b" , 1, COMMUTATIVE | ASSOCIATIVE); - def(FADD , "fadd" , "b" , 1, COMMUTATIVE | ASSOCIATIVE); - def(DADD , "dadd" , "b" , 1, COMMUTATIVE | ASSOCIATIVE); - def(ISUB , "isub" , "b" , 1); - def(LSUB , "lsub" , "b" , 1); - def(FSUB , "fsub" , "b" , 1); - def(DSUB , "dsub" , "b" , 1); - def(IMUL , "imul" , "b" , 1, COMMUTATIVE | ASSOCIATIVE); - def(LMUL , "lmul" , "b" , 1, COMMUTATIVE | ASSOCIATIVE); - def(FMUL , "fmul" , "b" , 1, COMMUTATIVE | ASSOCIATIVE); - def(DMUL , "dmul" , "b" , 1, COMMUTATIVE | ASSOCIATIVE); - def(IDIV , "idiv" , "b" , 1, TRAP); - def(LDIV , "ldiv" , "b" , 1, TRAP); - def(FDIV , "fdiv" , "b" , 1); - def(DDIV , "ddiv" , "b" , 1); - def(IREM , "irem" , "b" , 1, TRAP); - def(LREM , "lrem" , "b" , 1, TRAP); - def(FREM , "frem" , "b" , 1); - def(DREM , "drem" , "b" , 1); - def(INEG , "ineg" , "b" , 1); - def(LNEG , "lneg" , "b" , 1); - def(FNEG , "fneg" , "b" , 1); - def(DNEG , "dneg" , "b" , 1); - def(ISHL , "ishl" , "b" , 1); - def(LSHL , "lshl" , "b" , 1); - def(ISHR , "ishr" , "b" , 1); - def(LSHR , "lshr" , "b" , 1); - def(IUSHR , "iushr" , "b" , 1); - def(LUSHR , "lushr" , "b" , 1); - def(IAND , "iand" , "b" , 1, COMMUTATIVE | ASSOCIATIVE); - def(LAND , "land" , "b" , 1, COMMUTATIVE | ASSOCIATIVE); - def(IOR , "ior" , "b" , 1, COMMUTATIVE | ASSOCIATIVE); - def(LOR , "lor" , "b" , 1, COMMUTATIVE | ASSOCIATIVE); - def(IXOR , "ixor" , "b" , 1, COMMUTATIVE | ASSOCIATIVE); - def(LXOR , "lxor" , "b" , 1, COMMUTATIVE | ASSOCIATIVE); - def(IINC , "iinc" , "bic" , 1, LOAD | STORE); - def(I2L , "i2l" , "b" , 1); - def(I2F , "i2f" , "b" , 1); - def(I2D , "i2d" , "b" , 1); - def(L2I , "l2i" , "b" , 1); - def(L2F , "l2f" , "b" , 1); - def(L2D , "l2d" , "b" , 1); - def(F2I , "f2i" , "b" , 1); - def(F2L , "f2l" , "b" , 1); - def(F2D , "f2d" , "b" , 1); - def(D2I , "d2i" , "b" , 1); - def(D2L , "d2l" , "b" , 1); - def(D2F , "d2f" , "b" , 1); - def(I2B , "i2b" , "b" , 1); - def(I2C , "i2c" , "b" , 1); - def(I2S , "i2s" , "b" , 1); - def(LCMP , "lcmp" , "b" , 1); - def(FCMPL , "fcmpl" , "b" , 1); - def(FCMPG , "fcmpg" , "b" , 1); - def(DCMPL , "dcmpl" , "b" , 1); - def(DCMPG , "dcmpg" , "b" , 1); - def(IFEQ , "ifeq" , "boo" , 2, FALL_THROUGH | BRANCH); - def(IFNE , "ifne" , "boo" , 2, FALL_THROUGH | BRANCH); - def(IFLT , "iflt" , "boo" , 2, FALL_THROUGH | BRANCH); - def(IFGE , "ifge" , "boo" , 2, FALL_THROUGH | BRANCH); - def(IFGT , "ifgt" , "boo" , 2, FALL_THROUGH | BRANCH); - def(IFLE , "ifle" , "boo" , 2, FALL_THROUGH | BRANCH); - def(IF_ICMPEQ , "if_icmpeq" , "boo" , 2, COMMUTATIVE | FALL_THROUGH | BRANCH); - def(IF_ICMPNE , "if_icmpne" , "boo" , 2, COMMUTATIVE | FALL_THROUGH | BRANCH); - def(IF_ICMPLT , "if_icmplt" , "boo" , 2, FALL_THROUGH | BRANCH); - def(IF_ICMPGE , "if_icmpge" , "boo" , 2, FALL_THROUGH | BRANCH); - def(IF_ICMPGT , "if_icmpgt" , "boo" , 2, FALL_THROUGH | BRANCH); - def(IF_ICMPLE , "if_icmple" , "boo" , 2, FALL_THROUGH | BRANCH); - def(IF_ACMPEQ , "if_acmpeq" , "boo" , 2, COMMUTATIVE | FALL_THROUGH | BRANCH); - def(IF_ACMPNE , "if_acmpne" , "boo" , 2, COMMUTATIVE | FALL_THROUGH | BRANCH); - def(GOTO , "goto" , "boo" , 1, STOP | BRANCH); - def(JSR , "jsr" , "boo" , 0, STOP | BRANCH); - def(RET , "ret" , "bi" , 0, STOP); - def(TABLESWITCH , "tableswitch" , "" , 4, STOP); - def(LOOKUPSWITCH , "lookupswitch" , "" , 4, STOP); - def(IRETURN , "ireturn" , "b" , 1, TRAP | STOP); - def(LRETURN , "lreturn" , "b" , 1, TRAP | STOP); - def(FRETURN , "freturn" , "b" , 1, TRAP | STOP); - def(DRETURN , "dreturn" , "b" , 1, TRAP | STOP); - def(ARETURN , "areturn" , "b" , 1, TRAP | STOP); - def(RETURN , "return" , "b" , 1, TRAP | STOP); - def(GETSTATIC , "getstatic" , "bjj" , 2, TRAP | FIELD_READ); - def(PUTSTATIC , "putstatic" , "bjj" , 2, TRAP | FIELD_WRITE); - def(GETFIELD , "getfield" , "bjj" , 2, TRAP | FIELD_READ); - def(PUTFIELD , "putfield" , "bjj" , 2, TRAP | FIELD_WRITE); - def(INVOKEVIRTUAL , "invokevirtual" , "bjj" , 7, TRAP | INVOKE); - def(INVOKESPECIAL , "invokespecial" , "bjj" , 5, TRAP | INVOKE); - def(INVOKESTATIC , "invokestatic" , "bjj" , 5, TRAP | INVOKE); - def(INVOKEINTERFACE , "invokeinterface" , "bjja_", 7, TRAP | INVOKE); - def(XXXUNUSEDXXX , "xxxunusedxxx" , "" , 0); - def(NEW , "new" , "bii" , 6, TRAP); - def(NEWARRAY , "newarray" , "bc" , 6, TRAP); - def(ANEWARRAY , "anewarray" , "bii" , 6, TRAP); - def(ARRAYLENGTH , "arraylength" , "b" , 2, TRAP); - def(ATHROW , "athrow" , "b" , 5, TRAP | STOP); - def(CHECKCAST , "checkcast" , "bii" , 3, TRAP); - def(INSTANCEOF , "instanceof" , "bii" , 4, TRAP); - def(MONITORENTER , "monitorenter" , "b" , 5, TRAP); - def(MONITOREXIT , "monitorexit" , "b" , 5, TRAP); - def(WIDE , "wide" , "" , 0); - def(MULTIANEWARRAY , "multianewarray" , "biic" , 6, TRAP); - def(IFNULL , "ifnull" , "boo" , 2, FALL_THROUGH | BRANCH); - def(IFNONNULL , "ifnonnull" , "boo" , 2, FALL_THROUGH | BRANCH); - def(GOTO_W , "goto_w" , "boooo", 1, STOP | BRANCH); - def(JSR_W , "jsr_w" , "boooo", 0, STOP | BRANCH); - def(BREAKPOINT , "breakpoint" , "b" , 0, TRAP); - } - // Checkstyle: resume - - /** - * Determines if an opcode is commutative. - * @param opcode the opcode to check - * @return {@code true} iff commutative - */ - public static boolean isCommutative(int opcode) { - return (flagsArray[opcode & 0xff] & COMMUTATIVE) != 0; - } - - /** - * Gets the length of an instruction denoted by a given opcode. - * - * @param opcode an instruction opcode - * @return the length of the instruction denoted by {@code opcode}. If {@code opcode} is an illegal instruction or denotes a - * variable length instruction (e.g. {@link #TABLESWITCH}), then 0 is returned. - */ - public static int lengthOf(int opcode) { - return lengthArray[opcode & 0xff]; - } - - /** - * Gets the compilation complexity for a given opcode. - * @param opcode an opcode - * @return a value >= 0 - */ - public static int compilationComplexity(int opcode) { - return compilationComplexityArray[opcode & 0xff]; - } - - /** - * Gets the lower-case mnemonic for a given opcode. - * - * @param opcode an opcode - * @return the mnemonic for {@code opcode} or {@code "<illegal opcode: " + opcode + ">"} if {@code opcode} is not a legal opcode - */ - public static String nameOf(int opcode) throws IllegalArgumentException { - String name = nameArray[opcode & 0xff]; - if (name == null) { - return "<illegal opcode: " + opcode + ">"; - } - return name; - } - - /** - * Allocation-free version of {@linkplain #nameOf(int)}. - * @param opcode an opcode. - * @return the mnemonic for {@code opcode} or {@code "<illegal opcode>"} if {@code opcode} is not a legal opcode. - */ - public static String baseNameOf(int opcode) { - String name = nameArray[opcode & 0xff]; - if (name == null) { - return "<illegal opcode>"; - } - return name; - } - - /** - * Gets the opcode corresponding to a given mnemonic. - * - * @param name an opcode mnemonic - * @return the opcode corresponding to {@code mnemonic} - * @throws IllegalArgumentException if {@code name} does not denote a valid opcode - */ - public static int valueOf(String name) { - for (int opcode = 0; opcode < nameArray.length; ++opcode) { - if (name.equalsIgnoreCase(nameArray[opcode])) { - return opcode; - } - } - throw new IllegalArgumentException("No opcode for " + name); - } - - /** - * Determines if a given opcode denotes an instruction that can cause an implicit exception. - * - * @param opcode an opcode to test - * @return {@code true} iff {@code opcode} can cause an implicit exception, {@code false} otherwise - */ - public static boolean canTrap(int opcode) { - return (flagsArray[opcode & 0xff] & TRAP) != 0; - } - - /** - * Determines if a given opcode denotes an instruction that loads a local variable to the operand stack. - * - * @param opcode an opcode to test - * @return {@code true} iff {@code opcode} loads a local variable to the operand stack, {@code false} otherwise - */ - public static boolean isLoad(int opcode) { - return (flagsArray[opcode & 0xff] & LOAD) != 0; - } - - /** - * Determines if a given opcode denotes an instruction that ends a basic block and does not let control flow fall - * through to its lexical successor. - * - * @param opcode an opcode to test - * @return {@code true} iff {@code opcode} properly ends a basic block - */ - public static boolean isStop(int opcode) { - return (flagsArray[opcode & 0xff] & STOP) != 0; - } - - /** - * Determines if a given opcode denotes an instruction that stores a value to a local variable - * after popping it from the operand stack. - * - * @param opcode an opcode to test - * @return {@code true} iff {@code opcode} stores a value to a local variable, {@code false} otherwise - */ - public static boolean isInvoke(int opcode) { - return (flagsArray[opcode & 0xff] & INVOKE) != 0; - } - - /** - * Determines if a given opcode denotes an instruction that stores a value to a local variable - * after popping it from the operand stack. - * - * @param opcode an opcode to test - * @return {@code true} iff {@code opcode} stores a value to a local variable, {@code false} otherwise - */ - public static boolean isStore(int opcode) { - return (flagsArray[opcode & 0xff] & STORE) != 0; - } - - /** - * Determines if a given opcode is an instruction that delimits a basic block. - * - * @param opcode an opcode to test - * @return {@code true} iff {@code opcode} delimits a basic block - */ - public static boolean isBlockEnd(int opcode) { - return (flagsArray[opcode & 0xff] & (STOP | FALL_THROUGH)) != 0; - } - - /** - * Determines if a given opcode is an instruction that has a 2 or 4 byte operand that is an offset to another - * instruction in the same method. This does not include the {@linkplain #TABLESWITCH switch} instructions. - * - * @param opcode an opcode to test - * @return {@code true} iff {@code opcode} is a branch instruction with a single operand - */ - public static boolean isBranch(int opcode) { - return (flagsArray[opcode & 0xff] & BRANCH) != 0; - } - - /** - * Determines if a given opcode denotes a conditional branch. - * @param opcode - * @return {@code true} iff {@code opcode} is a conditional branch - */ - public static boolean isConditionalBranch(int opcode) { - return (flagsArray[opcode & 0xff] & FALL_THROUGH) != 0; - } - - /** - * Determines if a given opcode denotes a standard bytecode. A standard bytecode is - * defined in the JVM specification. - * - * @param opcode an opcode to test - * @return {@code true} iff {@code opcode} is a standard bytecode - */ - public static boolean isStandard(int opcode) { - return (flagsArray[opcode & 0xff] & EXTENSION) == 0; - } - - /** - * Determines if a given opcode denotes an extended bytecode. - * - * @param opcode an opcode to test - * @return {@code true} if {@code opcode} is an extended bytecode - */ - public static boolean isExtended(int opcode) { - return (flagsArray[opcode & 0xff] & EXTENSION) != 0; - } - - /** - * Determines if a given opcode is a three-byte extended bytecode. - * - * @param opcode an opcode to test - * @return {@code true} if {@code (opcode & ~0xff) != 0} - */ - public static boolean isThreeByteExtended(int opcode) { - return (opcode & ~0xff) != 0; - } - - /** - * Gets the arithmetic operator name for a given opcode. If {@code opcode} does not denote an - * arithmetic instruction, then the {@linkplain #nameOf(int) name} of the opcode is returned - * instead. - * - * @param op an opcode - * @return the arithmetic operator name - */ - public static String operator(int op) { - // Checkstyle: stop - switch (op) { - // arithmetic ops - case IADD : // fall through - case LADD : // fall through - case FADD : // fall through - case DADD : return "+"; - case ISUB : // fall through - case LSUB : // fall through - case FSUB : // fall through - case DSUB : return "-"; - case IMUL : // fall through - case LMUL : // fall through - case FMUL : // fall through - case DMUL : return "*"; - case IDIV : // fall through - case LDIV : // fall through - case FDIV : // fall through - case DDIV : return "/"; - case IREM : // fall through - case LREM : // fall through - case FREM : // fall through - case DREM : return "%"; - // shift ops - case ISHL : // fall through - case LSHL : return "<<"; - case ISHR : // fall through - case LSHR : return ">>"; - case IUSHR: // fall through - case LUSHR: return ">>>"; - // logic ops - case IAND : // fall through - case LAND : return "&"; - case IOR : // fall through - case LOR : return "|"; - case IXOR : // fall through - case LXOR : return "^"; - } - // Checkstyle: resume - return nameOf(op); - } - - /** - * Defines a bytecode by entering it into the arrays that record its name, length and flags. - * - * @param name instruction name (should be lower case) - * @param format encodes the length of the instruction - * @param flagsArray the set of {@link Flags} associated with the instruction - */ - private static void def(int opcode, String name, String format, int compilationComplexity) { - def(opcode, name, format, compilationComplexity, 0); - } - - /** - * Defines a bytecode by entering it into the arrays that record its name, length and flags. - * - * @param name instruction name (lower case) - * @param format encodes the length of the instruction - * @param flags the set of {@link Flags} associated with the instruction - */ - private static void def(int opcode, String name, String format, int compilationComplexity, int flags) { - assert nameArray[opcode] == null : "opcode " + opcode + " is already bound to name " + nameArray[opcode]; - nameArray[opcode] = name; - int instructionLength = format.length(); - lengthArray[opcode] = instructionLength; - compilationComplexityArray[opcode] = compilationComplexity; - Bytecodes.flagsArray[opcode] = flags; - - assert !isConditionalBranch(opcode) || isBranch(opcode) : "a conditional branch must also be a branch"; - } - - /** - * Utility for ensuring that the extended opcodes are contiguous and follow on directly - * from the standard JVM opcodes. If these conditions do not hold for the input source - * file, then it is modified 'in situ' to fix the problem. - * - * @param args {@code args[0]} is the path to this source file - */ - public static void main(String[] args) throws Exception { - Method findWorkspaceDirectory = Class.forName("com.sun.max.ide.JavaProject").getDeclaredMethod("findWorkspaceDirectory"); - File base = new File((File) findWorkspaceDirectory.invoke(null), "com.oracle.max.cri/src"); - File file = new File(base, Bytecodes.class.getName().replace('.', File.separatorChar) + ".java").getAbsoluteFile(); - - Pattern opcodeDecl = Pattern.compile("(\\s*public static final int )(\\w+)(\\s*=\\s*)(\\d+)(;.*)"); - - BufferedReader br = new BufferedReader(new FileReader(file)); - CharArrayWriter buffer = new CharArrayWriter((int) file.length()); - PrintWriter out = new PrintWriter(buffer); - String line; - int lastExtendedOpcode = BREAKPOINT; - boolean modified = false; - int section = 0; - while ((line = br.readLine()) != null) { - if (section == 0) { - if (line.equals(" // Start extended bytecodes")) { - section = 1; - } - } else if (section == 1) { - if (line.equals(" // End extended bytecodes")) { - section = 2; - } else { - Matcher matcher = opcodeDecl.matcher(line); - if (matcher.matches()) { - String name = matcher.group(2); - String value = matcher.group(4); - int opcode = Integer.parseInt(value); - if (nameArray[opcode] == null || !nameArray[opcode].equalsIgnoreCase(name)) { - throw new RuntimeException("Missing definition of name and flags for " + opcode + ":" + name + " -- " + nameArray[opcode]); - } - if (opcode != lastExtendedOpcode + 1) { - System.err.println("Fixed declaration of opcode " + name + " to be " + (lastExtendedOpcode + 1) + " (was " + value + ")"); - opcode = lastExtendedOpcode + 1; - line = line.substring(0, matcher.start(4)) + opcode + line.substring(matcher.end(4)); - modified = true; - } - - if (opcode >= 256) { - throw new RuntimeException("Exceeded maximum opcode value with " + name); - } - - lastExtendedOpcode = opcode; - } - } - } - - out.println(line); - } - if (section == 0) { - throw new RuntimeException("Did not find line starting extended bytecode declarations:\n\n // Start extended bytecodes"); - } else if (section == 1) { - throw new RuntimeException("Did not find line ending extended bytecode declarations:\n\n // End extended bytecodes"); - } - - if (modified) { - out.flush(); - FileWriter fileWriter = new FileWriter(file); - fileWriter.write(buffer.toCharArray()); - fileWriter.close(); - - System.out.println("Modified: " + file); - } - - - // Uncomment to print out visitor method declarations: -// for (int opcode = 0; opcode < flags.length; ++opcode) { -// if (isExtension(opcode)) { -// String visitorParams = length(opcode) == 1 ? "" : "int index"; -// System.out.println("@Override"); -// System.out.println("protected void " + name(opcode) + "(" + visitorParams + ") {"); -// System.out.println("}"); -// System.out.println(); -// } -// } - - // Uncomment to print out visitor method declarations: -// for (int opcode = 0; opcode < flags.length; ++opcode) { -// if (isExtension(opcode)) { -// System.out.println("case " + name(opcode).toUpperCase() + ": {"); -// String arg = ""; -// int length = length(opcode); -// if (length == 2) { -// arg = "readUnsigned1()"; -// } else if (length == 3) { -// arg = "readUnsigned2()"; -// } -// System.out.println(" bytecodeVisitor." + name(opcode) + "(" + arg + ");"); -// System.out.println(" break;"); -// System.out.println("}"); -// } -// } - - } -}
--- a/graal/com.oracle.graal.java/src/com/oracle/graal/java/bytecode/Bytes.java Mon Jun 11 13:26:37 2012 +0200 +++ /dev/null Thu Jan 01 00:00:00 1970 +0000 @@ -1,93 +0,0 @@ -/* - * Copyright (c) 2009, 2011, 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. - */ -package com.oracle.graal.java.bytecode; - -/** - * A collection of utility methods for dealing with bytes, particularly in byte arrays. - */ -public class Bytes { - /** - * Gets a signed 1-byte value. - * @param data the array containing the data - * @param bci the start index of the value to retrieve - * @return the signed 1-byte value at index {@code bci} in array {@code data} - */ - public static int beS1(byte[] data, int bci) { - return data[bci]; - } - - /** - * Gets a signed 2-byte big-endian value. - * @param data the array containing the data - * @param bci the start index of the value to retrieve - * @return the signed 2-byte, big-endian, value at index {@code bci} in array {@code data} - */ - public static int beS2(byte[] data, int bci) { - return (data[bci] << 8) | (data[bci + 1] & 0xff); - } - - /** - * Gets an unsigned 1-byte value. - * @param data the array containing the data - * @param bci the start index of the value to retrieve - * @return the unsigned 1-byte value at index {@code bci} in array {@code data} - */ - public static int beU1(byte[] data, int bci) { - return data[bci] & 0xff; - } - - /** - * Gets an unsigned 2-byte big-endian value. - * @param data the array containing the data - * @param bci the start index of the value to retrieve - * @return the unsigned 2-byte, big-endian, value at index {@code bci} in array {@code data} - */ - public static int beU2(byte[] data, int bci) { - return ((data[bci] & 0xff) << 8) | (data[bci + 1] & 0xff); - } - - /** - * Gets a signed 4-byte big-endian value. - * @param data the array containing the data - * @param bci the start index of the value to retrieve - * @return the signed 4-byte, big-endian, value at index {@code bci} in array {@code data} - */ - public static int beS4(byte[] data, int bci) { - return (data[bci] << 24) | ((data[bci + 1] & 0xff) << 16) | ((data[bci + 2] & 0xff) << 8) | (data[bci + 3] & 0xff); - } - - /** - * Gets either a signed 2-byte or a signed 4-byte big-endian value. - * @param data the array containing the data - * @param bci the start index of the value to retrieve - * @param fourByte if true, this method will return a 4-byte value - * @return the signed 2 or 4-byte, big-endian, value at index {@code bci} in array {@code data} - */ - public static int beSVar(byte[] data, int bci, boolean fourByte) { - if (fourByte) { - return beS4(data, bci); - } else { - return beS2(data, bci); - } - } -}
--- a/graal/com.oracle.graal.printer/src/com/oracle/graal/printer/IdealGraphPrinter.java Mon Jun 11 13:26:37 2012 +0200 +++ b/graal/com.oracle.graal.printer/src/com/oracle/graal/printer/IdealGraphPrinter.java Mon Jun 11 13:51:34 2012 +0200 @@ -27,12 +27,12 @@ import java.util.Map.Entry; import com.oracle.graal.api.meta.*; +import com.oracle.graal.bytecode.*; import com.oracle.graal.compiler.schedule.*; import com.oracle.graal.graph.*; import com.oracle.graal.graph.Node.Verbosity; import com.oracle.graal.graph.NodeClass.NodeClassIterator; import com.oracle.graal.graph.NodeClass.Position; -import com.oracle.graal.java.bytecode.*; import com.oracle.graal.lir.cfg.*; import com.oracle.graal.nodes.*;
--- a/mx/projects Mon Jun 11 13:26:37 2012 +0200 +++ b/mx/projects Mon Jun 11 13:51:34 2012 +0200 @@ -151,10 +151,16 @@ project@com.oracle.graal.boot.test@checkstyle=com.oracle.graal.graph project@com.oracle.graal.boot.test@javaCompliance=1.7 +# graal.bytecode +project@com.oracle.graal.bytecode@subDir=graal +project@com.oracle.graal.bytecode@sourceDirs=src +project@com.oracle.graal.bytecode@checkstyle=com.oracle.graal.graph +project@com.oracle.graal.bytecode@javaCompliance=1.7 + # graal.java project@com.oracle.graal.java@subDir=graal project@com.oracle.graal.java@sourceDirs=src -project@com.oracle.graal.java@dependencies=com.oracle.graal.compiler +project@com.oracle.graal.java@dependencies=com.oracle.graal.compiler,com.oracle.graal.bytecode project@com.oracle.graal.java@checkstyle=com.oracle.graal.graph project@com.oracle.graal.java@javaCompliance=1.7