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dragonwell8_langtools
提交 8e9d983b 编写于 作者: J jjg
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6819246: improve support for decoding instructions in classfile library 

Reviewed-by: ksrini
上级 6a3e17ac
展开全部 隐藏空白更改
内联 并排
Showing with 927 addition and 1072 deletion
src/share/classes/com/sun/tools/classfile/Code_attribute.java
浏览文件 @ 8e9d983b
......@@ -26,6 +26,8 @@
package com.sun.tools.classfile;
import java.io.IOException;
import java.util.Iterator;
import java.util.NoSuchElementException;
/**
* See JVMS3, section 4.8.3.
......@@ -100,6 +102,39 @@ public class Code_attribute extends Attribute {
return visitor.visitCode(this, data);
}
public Iterable<Instruction> getInstructions() {
return new Iterable<Instruction>() {
public Iterator<Instruction> iterator() {
return new Iterator<Instruction>() {
public boolean hasNext() {
return (next != null);
}
public Instruction next() {
if (next == null)
throw new NoSuchElementException();
current = next;
pc += current.length();
next = (pc < code.length ? new Instruction(code, pc) : null);
return current;
}
public void remove() {
throw new UnsupportedOperationException("Not supported.");
}
Instruction current = null;
int pc = 0;
Instruction next = new Instruction(code, pc);
};
}
};
}
public final int max_stack;
public final int max_locals;
public final int code_length;
......
src/share/classes/com/sun/tools/classfile/Instruction.java 0 → 100644
浏览文件 @ 8e9d983b
/*
* Copyright 2009 Sun Microsystems, Inc. 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. Sun designates this
* particular file as subject to the "Classpath" exception as provided
* by Sun in the LICENSE file that accompanied this code.
*
* 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
* CA 95054 USA or visit www.sun.com if you need additional information or
* have any questions.
*/
package com.sun.tools.classfile;
/**
* See JVMS3, chapter 6.
*
* <p><b>This is NOT part of any API supported by Sun Microsystems. If
* you write code that depends on this, you do so at your own risk.
* This code and its internal interfaces are subject to change or
* deletion without notice.</b>
*
* @see Code_attribute#getInstructions
*/
public class Instruction {
/** The kind of an instruction, as determined by the position, size and
* types of its operands. */
public static enum Kind {
/** Opcode is not followed by any operands. */
NO_OPERANDS(1),
/** Opcode is followed by a byte indicating a type. */
ATYPE(2),
/** Opcode is followed by a 2-byte branch offset. */
BRANCH(3),
/** Opcode is followed by a 4-byte branch offset. */
BRANCH_W(5),
/** Opcode is followed by a signed byte value. */
BYTE(2),
/** Opcode is followed by a 1-byte index into the constant pool. */
CPREF(2),
/** Opcode is followed by a 2-byte index into the constant pool. */
CPREF_W(3),
/** Opcode is followed by a 2-byte index into the constant pool,
* an unsigned byte value. */
CPREF_W_UBYTE(4),
/** Opcode is followed by a 2-byte index into the constant pool.,
* an unsigned byte value, and a zero byte. */
CPREF_W_UBYTE_ZERO(5),
/** Opcode is followed by variable number of operands, depending
* on the instruction.*/
DYNAMIC(-1),
/** Opcode is followed by a 1-byte reference to a local variable. */
LOCAL(2),
/** Opcode is followed by a 1-byte reference to a local variable,
* and a signed byte value. */
LOCAL_BYTE(3),
/** Opcode is followed by a signed short value. */
SHORT(3),
/** Wide opcode is not followed by any operands. */
WIDE_NO_OPERANDS(2),
/** Wide opcode is followed by a 2-byte index into the constant pool. */
WIDE_CPREF_W(4),
/** Wide opcode is followed by a 2-byte index into the constant pool,
* and a signed short value. */
WIDE_CPREF_W_SHORT(6),
/** Opcode was not recognized. */
UNKNOWN(1);
Kind(int length) {
this.length = length;
}
/** The length, in bytes, of this kind of instruction, or -1 is the
* length depends on the specific instruction. */
public final int length;
};
/** A utility visitor to help decode the operands of an instruction.
* @see Instruction#accept */
public interface KindVisitor<R,P> {
/** See {@link Kind#NO_OPERANDS}, {@link Kind#WIDE_NO_OPERANDS}. */
R visitNoOperands(Instruction instr, P p);
/** See {@link Kind#ATYPE}. */
R visitArrayType(Instruction instr, TypeKind kind, P p);
/** See {@link Kind#BRANCH}, {@link Kind#BRANCH_W}. */
R visitBranch(Instruction instr, int offset, P p);
/** See {@link Kind#CPREF}, {@link Kind#CPREF_W}, {@link Kind#WIDE_CPREF_W}. */
R visitConstantPoolRef(Instruction instr, int index, P p);
/** See {@link Kind#CPREF_W_UBYTE}, {@link Kind#CPREF_W_UBYTE_ZERO}, {@link Kind#WIDE_CPREF_W_SHORT}. */
R visitConstantPoolRefAndValue(Instruction instr, int index, int value, P p);
/** See {@link Kind#LOCAL}. */
R visitLocal(Instruction instr, int index, P p);
/** See {@link Kind#LOCAL_UBYTE}. */
R visitLocalAndValue(Instruction instr, int index, int value, P p);
/** See {@link Kind#DYNAMIC}. */
R visitLookupSwitch(Instruction instr, int default_, int npairs, int[] matches, int[] offsets);
/** See {@link Kind#DYNAMIC}. */
R visitTableSwitch(Instruction instr, int default_, int low, int high, int[] offsets);
/** See {@link Kind#BYTE}, {@link Kind#SHORT}. */
R visitValue(Instruction instr, int value, P p);
/** Instruction is unrecognized. */
R visitUnknown(Instruction instr, P p);
}
/** The kind of primitive array type to create.
* See JVMS chapter 6, newarray. */
public static enum TypeKind {
T_BOOLEAN(4, "boolean"),
T_CHAR(5, "char"),
T_FLOAT(6, "float"),
T_DOUBLE(7, "double"),
T_BYTE(8, "byte"),
T_SHORT(9, "short"),
T_INT (10, "int"),
T_LONG (11, "long");
TypeKind(int value, String name) {
this.value = value;
this.name = name;
}
public static TypeKind get(int value) {
switch (value) {
case 4: return T_BOOLEAN;
case 5: return T_CHAR;
case 6: return T_FLOAT;
case 7: return T_DOUBLE;
case 8: return T_BYTE;
case 9: return T_SHORT;
case 10: return T_INT;
case 11: return T_LONG;
default: return null;
}
}
public final int value;
public final String name;
}
/** An instruction is defined by its position in a bytecode array. */
public Instruction(byte[] bytes, int pc) {
this.bytes = bytes;
this.pc = pc;
}
/** Get the position of the instruction within the bytecode array. */
public int getPC() {
return pc;
}
/** Get a byte value, relative to the start of this instruction. */
public int getByte(int offset) {
return bytes[pc + offset];
}
/** Get an unsigned byte value, relative to the start of this instruction. */
public int getUnsignedByte(int offset) {
return getByte(offset) & 0xff;
}
/** Get a 2-byte value, relative to the start of this instruction. */
public int getShort(int offset) {
return (getByte(offset) << 8) | getUnsignedByte(offset + 1);
}
/** Get a unsigned 2-byte value, relative to the start of this instruction. */
public int getUnsignedShort(int offset) {
return getShort(offset) & 0xFFFF;
}
/** Get a 4-byte value, relative to the start of this instruction. */
public int getInt(int offset) {
return (getShort(offset) << 16) | (getUnsignedShort(offset + 2));
}
/** Get the Opcode for this instruction, or null if the instruction is
* unrecognized. */
public Opcode getOpcode() {
int b = getUnsignedByte(0);
switch (b) {
case Opcode.NONPRIV:
case Opcode.PRIV:
case Opcode.WIDE:
return Opcode.get(b, getUnsignedByte(1));
}
return Opcode.get(b);
}
/** Get the mnemonic for this instruction, or a default string if the
* instruction is unrecognized. */
public String getMnemonic() {
Opcode opcode = getOpcode();
if (opcode == null)
return "bytecode " + getUnsignedByte(0);
else
return opcode.toString().toLowerCase();
}
/** Get the length, in bytes, of this instruction, including the opcode
* and all its operands. */
public int length() {
Opcode opcode = getOpcode();
if (opcode == null)
return 1;
switch (opcode) {
case TABLESWITCH: {
int pad = align(pc + 1) - pc;
int low = getInt(pad + 4);
int high = getInt(pad + 8);
return pad + 12 + 4 * (high - low + 1);
}
case LOOKUPSWITCH: {
int pad = align(pc + 1) - pc;
int npairs = getInt(pad + 4);
return pad + 8 + 8 * npairs;
}
default:
return opcode.kind.length;
}
}
/** Get the {@link Kind} of this instruction. */
public Kind getKind() {
Opcode opcode = getOpcode();
return (opcode != null ? opcode.kind : Kind.UNKNOWN);
}
/** Invoke a method on the visitor according to the kind of this
* instruction, passing in the decoded operands for the instruction. */
public <R,P> R accept(KindVisitor<R,P> visitor, P p) {
switch (getKind()) {
case NO_OPERANDS:
return visitor.visitNoOperands(this, p);
case ATYPE:
return visitor.visitArrayType(
this, TypeKind.get(getUnsignedByte(1)), p);
case BRANCH:
return visitor.visitBranch(this, getShort(1), p);
case BRANCH_W:
return visitor.visitBranch(this, getInt(1), p);
case BYTE:
return visitor.visitValue(this, getByte(1), p);
case CPREF:
return visitor.visitConstantPoolRef(this, getUnsignedByte(1), p);
case CPREF_W:
return visitor.visitConstantPoolRef(this, getUnsignedShort(1), p);
case CPREF_W_UBYTE:
case CPREF_W_UBYTE_ZERO:
return visitor.visitConstantPoolRefAndValue(
this, getUnsignedShort(1), getUnsignedByte(3), p);
case DYNAMIC: {
switch (getOpcode()) {
case TABLESWITCH: {
int pad = align(pc + 1) - pc;
int default_ = getInt(pad);
int low = getInt(pad + 4);
int high = getInt(pad + 8);
int[] values = new int[high - low + 1];
for (int i = 0; i < values.length; i++)
values[i] = getInt(pad + 12 + 4 * i);
return visitor.visitTableSwitch(
this, default_, low, high, values);
}
case LOOKUPSWITCH: {
int pad = align(pc + 1) - pc;
int default_ = getInt(pad);
int npairs = getInt(pad + 4);
int[] matches = new int[npairs];
int[] offsets = new int[npairs];
for (int i = 0; i < npairs; i++) {
matches[i] = getInt(pad + 8 + i * 8);
offsets[i] = getInt(pad + 12 + i * 8);
}
return visitor.visitLookupSwitch(
this, default_, npairs, matches, offsets);
}
default:
throw new IllegalStateException();
}
}
case LOCAL:
return visitor.visitLocal(this, getUnsignedByte(1), p);
case LOCAL_BYTE:
return visitor.visitLocalAndValue(
this, getUnsignedByte(1), getByte(2), p);
case SHORT:
return visitor.visitValue(this, getShort(1), p);
case WIDE_NO_OPERANDS:
return visitor.visitNoOperands(this, p);
case WIDE_CPREF_W:
return visitor.visitConstantPoolRef(this, getUnsignedShort(2), p);
case WIDE_CPREF_W_SHORT:
return visitor.visitConstantPoolRefAndValue(
this, getUnsignedShort(2), getUnsignedByte(4), p);
case UNKNOWN:
return visitor.visitUnknown(this, p);
default:
throw new IllegalStateException();
}
}
private static int align(int n) {
return (n + 3) & ~3;
}
private byte[] bytes;
private int pc;
}
src/share/classes/com/sun/tools/classfile/Opcode.java 0 → 100644
浏览文件 @ 8e9d983b
/*
* Copyright 2009 Sun Microsystems, Inc. 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. Sun designates this
* particular file as subject to the "Classpath" exception as provided
* by Sun in the LICENSE file that accompanied this code.
*
* 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
* CA 95054 USA or visit www.sun.com if you need additional information or
* have any questions.
*/
package com.sun.tools.classfile;
import static com.sun.tools.classfile.Instruction.Kind.*;
import static com.sun.tools.classfile.Opcode.Set.*;
/**
* See JVMS3, chapter 6.
*
* <p>In addition to providing all the standard opcodes defined in JVMS,
* this class also provides legacy support for the PicoJava extensions.
*
* <p><b>This is NOT part of any API supported by Sun Microsystems. If
* you write code that depends on this, you do so at your own risk.
* This code and its internal interfaces are subject to change or
* deletion without notice.</b>
*/
public enum Opcode {
NOP(0x0),
ACONST_NULL(0x1),
ICONST_M1(0x2),
ICONST_0(0x3),
ICONST_1(0x4),
ICONST_2(0x5),
ICONST_3(0x6),
ICONST_4(0x7),
ICONST_5(0x8),
LCONST_0(0x9),
LCONST_1(0xa),
FCONST_0(0xb),
FCONST_1(0xc),
FCONST_2(0xd),
DCONST_0(0xe),
DCONST_1(0xf),
BIPUSH(0x10, BYTE),
SIPUSH(0x11, SHORT),
LDC(0x12, CPREF),
LDC_W(0x13, CPREF_W),
LDC2_W(0x14, CPREF_W),
ILOAD(0x15, LOCAL),
LLOAD(0x16, LOCAL),
FLOAD(0x17, LOCAL),
DLOAD(0x18, LOCAL),
ALOAD(0x19, LOCAL),
ILOAD_0(0x1a),
ILOAD_1(0x1b),
ILOAD_2(0x1c),
ILOAD_3(0x1d),
LLOAD_0(0x1e),
LLOAD_1(0x1f),
LLOAD_2(0x20),
LLOAD_3(0x21),
FLOAD_0(0x22),
FLOAD_1(0x23),
FLOAD_2(0x24),
FLOAD_3(0x25),
DLOAD_0(0x26),
DLOAD_1(0x27),
DLOAD_2(0x28),
DLOAD_3(0x29),
ALOAD_0(0x2a),
ALOAD_1(0x2b),
ALOAD_2(0x2c),
ALOAD_3(0x2d),
IALOAD(0x2e),
LALOAD(0x2f),
FALOAD(0x30),
DALOAD(0x31),
AALOAD(0x32),
BALOAD(0x33),
CALOAD(0x34),
SALOAD(0x35),
ISTORE(0x36, LOCAL),
LSTORE(0x37, LOCAL),
FSTORE(0x38, LOCAL),
DSTORE(0x39, LOCAL),
ASTORE(0x3a, LOCAL),
ISTORE_0(0x3b),
ISTORE_1(0x3c),
ISTORE_2(0x3d),
ISTORE_3(0x3e),
LSTORE_0(0x3f),
LSTORE_1(0x40),
LSTORE_2(0x41),
LSTORE_3(0x42),
FSTORE_0(0x43),
FSTORE_1(0x44),
FSTORE_2(0x45),
FSTORE_3(0x46),
DSTORE_0(0x47),
DSTORE_1(0x48),
DSTORE_2(0x49),
DSTORE_3(0x4a),
ASTORE_0(0x4b),
ASTORE_1(0x4c),
ASTORE_2(0x4d),
ASTORE_3(0x4e),
IASTORE(0x4f),
LASTORE(0x50),
FASTORE(0x51),
DASTORE(0x52),
AASTORE(0x53),
BASTORE(0x54),
CASTORE(0x55),
SASTORE(0x56),
POP(0x57),
POP2(0x58),
DUP(0x59),
DUP_X1(0x5a),
DUP_X2(0x5b),
DUP2(0x5c),
DUP2_X1(0x5d),
DUP2_X2(0x5e),
SWAP(0x5f),
IADD(0x60),
LADD(0x61),
FADD(0x62),
DADD(0x63),
ISUB(0x64),
LSUB(0x65),
FSUB(0x66),
DSUB(0x67),
IMUL(0x68),
LMUL(0x69),
FMUL(0x6a),
DMUL(0x6b),
IDIV(0x6c),
LDIV(0x6d),
FDIV(0x6e),
DDIV(0x6f),
IREM(0x70),
LREM(0x71),
FREM(0x72),
DREM(0x73),
INEG(0x74),
LNEG(0x75),
FNEG(0x76),
DNEG(0x77),
ISHL(0x78),
LSHL(0x79),
ISHR(0x7a),
LSHR(0x7b),
IUSHR(0x7c),
LUSHR(0x7d),
IAND(0x7e),
LAND(0x7f),
IOR(0x80),
LOR(0x81),
IXOR(0x82),
LXOR(0x83),
IINC(0x84, LOCAL_BYTE),
I2L(0x85),
I2F(0x86),
I2D(0x87),
L2I(0x88),
L2F(0x89),
L2D(0x8a),
F2I(0x8b),
F2L(0x8c),
F2D(0x8d),
D2I(0x8e),
D2L(0x8f),
D2F(0x90),
I2B(0x91),
I2C(0x92),
I2S(0x93),
LCMP(0x94),
FCMPL(0x95),
FCMPG(0x96),
DCMPL(0x97),
DCMPG(0x98),
IFEQ(0x99, BRANCH),
IFNE(0x9a, BRANCH),
IFLT(0x9b, BRANCH),
IFGE(0x9c, BRANCH),
IFGT(0x9d, BRANCH),
IFLE(0x9e, BRANCH),
IF_ICMPEQ(0x9f, BRANCH),
IF_ICMPNE(0xa0, BRANCH),
IF_ICMPLT(0xa1, BRANCH),
IF_ICMPGE(0xa2, BRANCH),
IF_ICMPGT(0xa3, BRANCH),
IF_ICMPLE(0xa4, BRANCH),
IF_ACMPEQ(0xa5, BRANCH),
IF_ACMPNE(0xa6, BRANCH),
GOTO(0xa7, BRANCH),
JSR(0xa8, BRANCH),
RET(0xa9, LOCAL),
TABLESWITCH(0xaa, DYNAMIC),
LOOKUPSWITCH(0xab, DYNAMIC),
IRETURN(0xac),
LRETURN(0xad),
FRETURN(0xae),
DRETURN(0xaf),
ARETURN(0xb0),
RETURN(0xb1),
GETSTATIC(0xb2, CPREF_W),
PUTSTATIC(0xb3, CPREF_W),
GETFIELD(0xb4, CPREF_W),
PUTFIELD(0xb5, CPREF_W),
INVOKEVIRTUAL(0xb6, CPREF_W),
INVOKESPECIAL(0xb7, CPREF_W),
INVOKESTATIC(0xb8, CPREF_W),
INVOKEINTERFACE(0xb9, CPREF_W_UBYTE_ZERO),
// unused 0xba
NEW(0xbb, CPREF_W),
NEWARRAY(0xbc, ATYPE),
ANEWARRAY(0xbd, CPREF_W),
ARRAYLENGTH(0xbe),
ATHROW(0xbf),
CHECKCAST(0xc0, CPREF_W),
INSTANCEOF(0xc1, CPREF_W),
MONITORENTER(0xc2),
MONITOREXIT(0xc3),
// wide 0xc4
MULTIANEWARRAY(0xc5, CPREF_W_UBYTE),
IFNULL(0xc6, BRANCH),
IFNONNULL(0xc7, BRANCH),
GOTO_W(0xc8, BRANCH_W),
JSR_W(0xc9, BRANCH_W),
// impdep 0xfe: PicoJava nonpriv
// impdep 0xff: Picojava priv
// wide opcodes
ILOAD_W(0xc415, WIDE_CPREF_W),
LLOAD_W(0xc416, WIDE_CPREF_W),
FLOAD_W(0xc417, WIDE_CPREF_W),
DLOAD_W(0xc418, WIDE_CPREF_W),
ALOAD_W(0xc419, WIDE_CPREF_W),
ISTORE_W(0xc436, WIDE_CPREF_W),
LSTORE_W(0xc437, WIDE_CPREF_W),
FSTORE_W(0xc438, WIDE_CPREF_W),
DSTORE_W(0xc439, WIDE_CPREF_W),
ASTORE_W(0xc43a, WIDE_CPREF_W),
IINC_W(0xc484, WIDE_CPREF_W_SHORT),
RET_W(0xc4a9, WIDE_CPREF_W),
// PicoJava nonpriv instructions
LOAD_UBYTE(PICOJAVA, 0xfe00),
LOAD_BYTE(PICOJAVA, 0xfe01),
LOAD_CHAR(PICOJAVA, 0xfe02),
LOAD_SHORT(PICOJAVA, 0xfe03),
LOAD_WORD(PICOJAVA, 0xfe04),
RET_FROM_SUB(PICOJAVA, 0xfe05),
LOAD_CHAR_OE(PICOJAVA, 0xfe0a),
LOAD_SHORT_OE(PICOJAVA, 0xfe0b),
LOAD_WORD_OE(PICOJAVA, 0xfe0c),
NCLOAD_UBYTE(PICOJAVA, 0xfe10),
NCLOAD_BYTE(PICOJAVA, 0xfe11),
NCLOAD_CHAR(PICOJAVA, 0xfe12),
NCLOAD_SHORT(PICOJAVA, 0xfe13),
NCLOAD_WORD(PICOJAVA, 0xfe14),
NCLOAD_CHAR_OE(PICOJAVA, 0xfe1a),
NCLOAD_SHORT_OE(PICOJAVA, 0xfe1b),
NCLOAD_WORD_OE(PICOJAVA, 0xfe1c),
CACHE_FLUSH(PICOJAVA, 0xfe1e),
STORE_BYTE(PICOJAVA, 0xfe20),
STORE_SHORT(PICOJAVA, 0xfe22),
STORE_WORD(PICOJAVA, 0xfe24),
STORE_SHORT_OE(PICOJAVA, 0xfe2a),
STORE_WORD_OE(PICOJAVA, 0xfe2c),
NCSTORE_BYTE(PICOJAVA, 0xfe30),
NCSTORE_SHORT(PICOJAVA, 0xfe32),
NCSTORE_WORD(PICOJAVA, 0xfe34),
NCSTORE_SHORT_OE(PICOJAVA, 0xfe3a),
NCSTORE_WORD_OE(PICOJAVA, 0xfe3c),
ZERO_LINE(PICOJAVA, 0xfe3e),
ENTER_SYNC_METHOD(PICOJAVA, 0xfe3f),
// PicoJava priv instructions
PRIV_LOAD_UBYTE(PICOJAVA, 0xff00),
PRIV_LOAD_BYTE(PICOJAVA, 0xff01),
PRIV_LOAD_CHAR(PICOJAVA, 0xff02),
PRIV_LOAD_SHORT(PICOJAVA, 0xff03),
PRIV_LOAD_WORD(PICOJAVA, 0xff04),
PRIV_RET_FROM_TRAP(PICOJAVA, 0xff05),
PRIV_READ_DCACHE_TAG(PICOJAVA, 0xff06),
PRIV_READ_DCACHE_DATA(PICOJAVA, 0xff07),
PRIV_LOAD_CHAR_OE(PICOJAVA, 0xff0a),
PRIV_LOAD_SHORT_OE(PICOJAVA, 0xff0b),
PRIV_LOAD_WORD_OE(PICOJAVA, 0xff0c),
PRIV_READ_ICACHE_TAG(PICOJAVA, 0xff0e),
PRIV_READ_ICACHE_DATA(PICOJAVA, 0xff0f),
PRIV_NCLOAD_UBYTE(PICOJAVA, 0xff10),
PRIV_NCLOAD_BYTE(PICOJAVA, 0xff11),
PRIV_NCLOAD_CHAR(PICOJAVA, 0xff12),
PRIV_NCLOAD_SHORT(PICOJAVA, 0xff13),
PRIV_NCLOAD_WORD(PICOJAVA, 0xff14),
PRIV_POWERDOWN(PICOJAVA, 0xff16),
PRIV_READ_SCACHE_DATA(PICOJAVA, 0xff17),
PRIV_NCLOAD_CHAR_OE(PICOJAVA, 0xff1a),
PRIV_NCLOAD_SHORT_OE(PICOJAVA, 0xff1b),
PRIV_NCLOAD_WORD_OE(PICOJAVA, 0xff1c),
PRIV_CACHE_FLUSH(PICOJAVA, 0xff1e),
PRIV_CACHE_INDEX_FLUSH(PICOJAVA, 0xff1f),
PRIV_STORE_BYTE(PICOJAVA, 0xff20),
PRIV_STORE_SHORT(PICOJAVA, 0xff22),
PRIV_STORE_WORD(PICOJAVA, 0xff24),
PRIV_WRITE_DCACHE_TAG(PICOJAVA, 0xff26),
PRIV_WRITE_DCACHE_DATA(PICOJAVA, 0xff27),
PRIV_STORE_SHORT_OE(PICOJAVA, 0xff2a),
PRIV_STORE_WORD_OE(PICOJAVA, 0xff2c),
PRIV_WRITE_ICACHE_TAG(PICOJAVA, 0xff2e),
PRIV_WRITE_ICACHE_DATA(PICOJAVA, 0xff2f),
PRIV_NCSTORE_BYTE(PICOJAVA, 0xff30),
PRIV_NCSTORE_SHORT(PICOJAVA, 0xff32),
PRIV_NCSTORE_WORD(PICOJAVA, 0xff34),
PRIV_RESET(PICOJAVA, 0xff36),
PRIV_WRITE_SCACHE_DATA(PICOJAVA, 0xff37),
PRIV_NCSTORE_SHORT_OE(PICOJAVA, 0xff3a),
PRIV_NCSTORE_WORD_OE(PICOJAVA, 0xff3c),
PRIV_ZERO_LINE(PICOJAVA, 0xff3e),
PRIV_READ_REG_0(PICOJAVA, 0xff40),
PRIV_READ_REG_1(PICOJAVA, 0xff41),
PRIV_READ_REG_2(PICOJAVA, 0xff42),
PRIV_READ_REG_3(PICOJAVA, 0xff43),
PRIV_READ_REG_4(PICOJAVA, 0xff44),
PRIV_READ_REG_5(PICOJAVA, 0xff45),
PRIV_READ_REG_6(PICOJAVA, 0xff46),
PRIV_READ_REG_7(PICOJAVA, 0xff47),
PRIV_READ_REG_8(PICOJAVA, 0xff48),
PRIV_READ_REG_9(PICOJAVA, 0xff49),
PRIV_READ_REG_10(PICOJAVA, 0xff4a),
PRIV_READ_REG_11(PICOJAVA, 0xff4b),
PRIV_READ_REG_12(PICOJAVA, 0xff4c),
PRIV_READ_REG_13(PICOJAVA, 0xff4d),
PRIV_READ_REG_14(PICOJAVA, 0xff4e),
PRIV_READ_REG_15(PICOJAVA, 0xff4f),
PRIV_READ_REG_16(PICOJAVA, 0xff50),
PRIV_READ_REG_17(PICOJAVA, 0xff51),
PRIV_READ_REG_18(PICOJAVA, 0xff52),
PRIV_READ_REG_19(PICOJAVA, 0xff53),
PRIV_READ_REG_20(PICOJAVA, 0xff54),
PRIV_READ_REG_21(PICOJAVA, 0xff55),
PRIV_READ_REG_22(PICOJAVA, 0xff56),
PRIV_READ_REG_23(PICOJAVA, 0xff57),
PRIV_READ_REG_24(PICOJAVA, 0xff58),
PRIV_READ_REG_25(PICOJAVA, 0xff59),
PRIV_READ_REG_26(PICOJAVA, 0xff5a),
PRIV_READ_REG_27(PICOJAVA, 0xff5b),
PRIV_READ_REG_28(PICOJAVA, 0xff5c),
PRIV_READ_REG_29(PICOJAVA, 0xff5d),
PRIV_READ_REG_30(PICOJAVA, 0xff5e),
PRIV_READ_REG_31(PICOJAVA, 0xff5f),
PRIV_WRITE_REG_0(PICOJAVA, 0xff60),
PRIV_WRITE_REG_1(PICOJAVA, 0xff61),
PRIV_WRITE_REG_2(PICOJAVA, 0xff62),
PRIV_WRITE_REG_3(PICOJAVA, 0xff63),
PRIV_WRITE_REG_4(PICOJAVA, 0xff64),
PRIV_WRITE_REG_5(PICOJAVA, 0xff65),
PRIV_WRITE_REG_6(PICOJAVA, 0xff66),
PRIV_WRITE_REG_7(PICOJAVA, 0xff67),
PRIV_WRITE_REG_8(PICOJAVA, 0xff68),
PRIV_WRITE_REG_9(PICOJAVA, 0xff69),
PRIV_WRITE_REG_10(PICOJAVA, 0xff6a),
PRIV_WRITE_REG_11(PICOJAVA, 0xff6b),
PRIV_WRITE_REG_12(PICOJAVA, 0xff6c),
PRIV_WRITE_REG_13(PICOJAVA, 0xff6d),
PRIV_WRITE_REG_14(PICOJAVA, 0xff6e),
PRIV_WRITE_REG_15(PICOJAVA, 0xff6f),
PRIV_WRITE_REG_16(PICOJAVA, 0xff70),
PRIV_WRITE_REG_17(PICOJAVA, 0xff71),
PRIV_WRITE_REG_18(PICOJAVA, 0xff72),
PRIV_WRITE_REG_19(PICOJAVA, 0xff73),
PRIV_WRITE_REG_20(PICOJAVA, 0xff74),
PRIV_WRITE_REG_21(PICOJAVA, 0xff75),
PRIV_WRITE_REG_22(PICOJAVA, 0xff76),
PRIV_WRITE_REG_23(PICOJAVA, 0xff77),
PRIV_WRITE_REG_24(PICOJAVA, 0xff78),
PRIV_WRITE_REG_25(PICOJAVA, 0xff79),
PRIV_WRITE_REG_26(PICOJAVA, 0xff7a),
PRIV_WRITE_REG_27(PICOJAVA, 0xff7b),
PRIV_WRITE_REG_28(PICOJAVA, 0xff7c),
PRIV_WRITE_REG_29(PICOJAVA, 0xff7d),
PRIV_WRITE_REG_30(PICOJAVA, 0xff7e),
PRIV_WRITE_REG_31(PICOJAVA, 0xff7f);
Opcode(int opcode) {
this(STANDARD, opcode, NO_OPERANDS);
}
Opcode(int opcode, Instruction.Kind kind) {
this(STANDARD, opcode, kind);
}
Opcode(Set set, int opcode) {
this(set, opcode, (set == STANDARD ? NO_OPERANDS : WIDE_NO_OPERANDS));
}
Opcode(Set set, int opcode, Instruction.Kind kind) {
this.set = set;
this.opcode = opcode;
this.kind = kind;
}
public final Set set;
public final int opcode;
public final Instruction.Kind kind;
/** Get the Opcode for a simple standard 1-byte opcode. */
public static Opcode get(int opcode) {
return stdOpcodes[opcode];
}
/** Get the Opcode for 1- or 2-byte opcode. */
public static Opcode get(int opcodePrefix, int opcode) {
Opcode[] block = getOpcodeBlock(opcodePrefix);
return (block == null ? null : block[opcode]);
}
private static Opcode[] getOpcodeBlock(int opcodePrefix) {
switch (opcodePrefix) {
case 0:
return stdOpcodes;
case WIDE:
return wideOpcodes;
case NONPRIV:
return nonPrivOpcodes;
case PRIV:
return privOpcodes;
default:
return null;
}
}
private static Opcode[] stdOpcodes = new Opcode[256];
private static Opcode[] wideOpcodes = new Opcode[256];
private static Opcode[] nonPrivOpcodes = new Opcode[256];
private static Opcode[] privOpcodes = new Opcode[256];
static {
for (Opcode o: values())
getOpcodeBlock(o.opcode >> 8)[o.opcode & 0xff] = o;
}
/** The byte prefix for the wide instructions. */
public static final int WIDE = 0xc4;
/** The byte prefix for the PicoJava nonpriv instructions. */
public static final int NONPRIV = 0xfe;
/** The byte prefix for the PicoJava priv instructions. */
public static final int PRIV = 0xff;
public enum Set {
/** Standard opcodes. */
STANDARD,
/** Legacy support for PicoJava opcodes. */
PICOJAVA };
}
src/share/classes/com/sun/tools/javap/CodeWriter.java
浏览文件 @ 8e9d983b
......@@ -30,9 +30,12 @@ import com.sun.tools.classfile.Code_attribute;
import com.sun.tools.classfile.ConstantPool;
import com.sun.tools.classfile.ConstantPoolException;
import com.sun.tools.classfile.DescriptorException;
import com.sun.tools.classfile.Instruction;
import com.sun.tools.classfile.Instruction.TypeKind;
import com.sun.tools.classfile.Method;
import com.sun.tools.classfile.Opcode;
import static com.sun.tools.classfile.OpCodes.*;
//import static com.sun.tools.classfile.OpCodes.*;
/*
* Write the contents of a Code attribute.
......@@ -87,218 +90,92 @@ class CodeWriter extends BasicWriter {
}
public void writeInstrs(Code_attribute attr) {
try {
for (int pc = 0; pc < attr.code_length;) {
print(" " + pc + ":\t");
pc += writeInstr(attr, pc);
println();
for (Instruction instr: attr.getInstructions()) {
try {
writeInstr(instr);
} catch (ArrayIndexOutOfBoundsException e) {
println(report("error at or after byte " + instr.getPC()));
break;
}
} catch (Code_attribute.InvalidIndex e) {
println(report(e));
}
}
public int writeInstr(Code_attribute attr, int pc)
throws Code_attribute.InvalidIndex {
String lP = "";
int opcode = attr.getUnsignedByte(pc);
int opcode2;
String mnem;
switch (opcode) {
case opc_nonpriv:
case opc_priv: {
opcode2 = attr.getUnsignedByte(pc + 1);
mnem = opcName((opcode << 8) + opcode2);
if (mnem == null) {
mnem = opcName(opcode) + " " + opcode2;
}
print(mnem);
return 2;
}
case opc_wide: {
opcode2 = attr.getUnsignedByte(pc + 1);
mnem = opcName((opcode << 8) + opcode2);
if (mnem == null) {
print("bytecode " + opcode);
return 1;
}
print(mnem + " " + attr.getUnsignedShort(pc + 2));
if (opcode2 == opc_iinc) {
print(", " + attr.getShort(pc + 4));
return 6;
}
return 4;
public void writeInstr(Instruction instr) {
print(" " + instr.getPC() + ":\t");
print(instr.getMnemonic());
instr.accept(instructionPrinter, null);
println();
}
// where
Instruction.KindVisitor<Void,Void> instructionPrinter =
new Instruction.KindVisitor<Void,Void>() {
public Void visitNoOperands(Instruction instr, Void p) {
return null;
}
public Void visitArrayType(Instruction instr, TypeKind kind, Void p) {
print(" " + kind.name);
return null;
}
public Void visitBranch(Instruction instr, int offset, Void p) {
print("\t" + (instr.getPC() + offset));
return null;
}
public Void visitConstantPoolRef(Instruction instr, int index, Void p) {
print("\t#" + index + "; //");
printConstant(index);
return null;
}
public Void visitConstantPoolRefAndValue(Instruction instr, int index, int value, Void p) {
print("\t#" + index + ", " + value + "; //");
printConstant(index);
return null;
}
public Void visitLocal(Instruction instr, int index, Void p) {
print("\t" + index);
return null;
}
public Void visitLocalAndValue(Instruction instr, int index, int value, Void p) {
print("\t" + index + ", " + value);
return null;
}
public Void visitLookupSwitch(Instruction instr, int default_, int npairs, int[] matches, int[] offsets) {
int pc = instr.getPC();
print("{ //" + npairs);
for (int i = 0; i < npairs; i++) {
print("\n\t\t" + matches[i] + ": " + (pc + offsets[i]) + ";");
}
print("\n\t\tdefault: " + (pc + default_) + " }");
return null;
}
mnem = opcName(opcode);
if (mnem == null) {
print("bytecode " + opcode);
return 1;
public Void visitTableSwitch(Instruction instr, int default_, int low, int high, int[] offsets) {
int pc = instr.getPC();
print("{ //" + low + " to " + high);
for (int i = 0; i < offsets.length; i++) {
print("\n\t\t" + (low + i) + ": " + (pc + offsets[i]) + ";");
}
print("\n\t\tdefault: " + (pc + default_) + " }");
return null;
}
if (opcode > opc_jsr_w) {
print("bytecode " + opcode);
return 1;
public Void visitValue(Instruction instr, int value, Void p) {
print("\t" + value);
return null;
}
print(opcName(opcode));
switch (opcode) {
case opc_aload:
case opc_astore:
case opc_fload:
case opc_fstore:
case opc_iload:
case opc_istore:
case opc_lload:
case opc_lstore:
case opc_dload:
case opc_dstore:
case opc_ret:
print("\t" + attr.getUnsignedByte(pc + 1));
return 2;
case opc_iinc:
print("\t" + attr.getUnsignedByte(pc + 1) + ", " + attr.getByte(pc + 2));
return 3;
case opc_tableswitch:
{
int tb = align(pc + 1);
int default_skip = attr.getInt(tb);
int low = attr.getInt(tb + 4);
int high = attr.getInt(tb + 8);
int count = high - low;
print("{ //" + low + " to " + high);
for (int i = 0; i <= count; i++) {
print("\n\t\t" + (i + low) + ": " + lP + (pc + attr.getInt(tb + 12 + 4 * i)) + ";");
}
print("\n\t\tdefault: " + lP + (default_skip + pc) + " }");
return tb - pc + 16 + count * 4;
}
case opc_lookupswitch:
{
int tb = align(pc + 1);
int default_skip = attr.getInt(tb);
int npairs = attr.getInt(tb + 4);
print("{ //" + npairs);
for (int i = 1; i <= npairs; i++) {
print("\n\t\t" + attr.getInt(tb + i * 8) + ": " + lP + (pc + attr.getInt(tb + 4 + i * 8)) + ";");
}
print("\n\t\tdefault: " + lP + (default_skip + pc) + " }");
return tb - pc + (npairs + 1) * 8;
}
case opc_newarray:
int type = attr.getUnsignedByte(pc + 1);
switch (type) {
case T_BOOLEAN:
print(" boolean");
break;
case T_BYTE:
print(" byte");
break;
case T_CHAR:
print(" char");
break;
case T_SHORT:
print(" short");
break;
case T_INT:
print(" int");
break;
case T_LONG:
print(" long");
break;
case T_FLOAT:
print(" float");
break;
case T_DOUBLE:
print(" double");
break;
case T_CLASS:
print(" class");
break;
default:
print(" BOGUS TYPE:" + type);
}
return 2;
case opc_anewarray:
{
int index = attr.getUnsignedShort(pc + 1);
print("\t#" + index + "; //");
printConstant(index);
return 3;
}
case opc_sipush:
print("\t" + attr.getShort(pc + 1));
return 3;
case opc_bipush:
print("\t" + attr.getByte(pc + 1));
return 2;
case opc_ldc:
{
int index = attr.getUnsignedByte(pc + 1);
print("\t#" + index + "; //");
printConstant(index);
return 2;
}
case opc_ldc_w:
case opc_ldc2_w:
case opc_instanceof:
case opc_checkcast:
case opc_new:
case opc_putstatic:
case opc_getstatic:
case opc_putfield:
case opc_getfield:
case opc_invokevirtual:
case opc_invokespecial:
case opc_invokestatic:
{
int index = attr.getUnsignedShort(pc + 1);
print("\t#" + index + "; //");
printConstant(index);
return 3;
}
case opc_invokeinterface:
{
int index = attr.getUnsignedShort(pc + 1);
int nargs = attr.getUnsignedByte(pc + 3);
print("\t#" + index + ", " + nargs + "; //");
printConstant(index);
return 5;
}
case opc_multianewarray:
{
int index = attr.getUnsignedShort(pc + 1);
int dimensions = attr.getUnsignedByte(pc + 3);
print("\t#" + index + ", " + dimensions + "; //");
printConstant(index);
return 4;
}
case opc_jsr:
case opc_goto:
case opc_ifeq:
case opc_ifge:
case opc_ifgt:
case opc_ifle:
case opc_iflt:
case opc_ifne:
case opc_if_icmpeq:
case opc_if_icmpne:
case opc_if_icmpge:
case opc_if_icmpgt:
case opc_if_icmple:
case opc_if_icmplt:
case opc_if_acmpeq:
case opc_if_acmpne:
case opc_ifnull:
case opc_ifnonnull:
print("\t" + lP + (pc + attr.getShort(pc + 1)));
return 3;
case opc_jsr_w:
case opc_goto_w:
print("\t" + lP + (pc + attr.getInt(pc + 1)));
return 5;
default:
return 1;
public Void visitUnknown(Instruction instr, Void p) {
return null;
}
}
};
public void writeExceptionTable(Code_attribute attr) {
if (attr.exception_table_langth > 0) {
......
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