| /* |
| * Copyright (c) 2002, 2012, 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 sun.jvm.hotspot.interpreter; |
| |
| import java.util.*; |
| import java.lang.reflect.Constructor; |
| import sun.jvm.hotspot.oops.*; |
| import sun.jvm.hotspot.utilities.*; |
| |
| public class BytecodeDisassembler { |
| private Method method; |
| |
| private static Map bytecode2Class = new HashMap(); // Map<int, Class> |
| |
| private static void addBytecodeClass(int bytecode, Class clazz) { |
| bytecode2Class.put(new Integer(bytecode), clazz); |
| } |
| |
| private static Class getBytecodeClass(int bytecode) { |
| return (Class) bytecode2Class.get(new Integer(bytecode)); |
| } |
| |
| static { |
| addBytecodeClass(Bytecodes._anewarray, BytecodeANewArray.class); |
| addBytecodeClass(Bytecodes._bipush, BytecodeBipush.class); |
| addBytecodeClass(Bytecodes._checkcast, BytecodeCheckCast.class); |
| addBytecodeClass(Bytecodes._getfield, BytecodeGetField.class); |
| addBytecodeClass(Bytecodes._getstatic, BytecodeGetStatic.class); |
| addBytecodeClass(Bytecodes._goto, BytecodeGoto.class); |
| addBytecodeClass(Bytecodes._goto_w, BytecodeGotoW.class); |
| addBytecodeClass(Bytecodes._ifeq, BytecodeIf.class); |
| addBytecodeClass(Bytecodes._ifne, BytecodeIf.class); |
| addBytecodeClass(Bytecodes._iflt, BytecodeIf.class); |
| addBytecodeClass(Bytecodes._ifge, BytecodeIf.class); |
| addBytecodeClass(Bytecodes._ifgt, BytecodeIf.class); |
| addBytecodeClass(Bytecodes._ifle, BytecodeIf.class); |
| addBytecodeClass(Bytecodes._if_icmpeq, BytecodeIf.class); |
| addBytecodeClass(Bytecodes._if_icmpne, BytecodeIf.class); |
| addBytecodeClass(Bytecodes._if_icmplt, BytecodeIf.class); |
| addBytecodeClass(Bytecodes._if_icmpge, BytecodeIf.class); |
| addBytecodeClass(Bytecodes._if_icmpgt, BytecodeIf.class); |
| addBytecodeClass(Bytecodes._if_icmple, BytecodeIf.class); |
| addBytecodeClass(Bytecodes._if_acmpeq, BytecodeIf.class); |
| addBytecodeClass(Bytecodes._if_acmpne, BytecodeIf.class); |
| addBytecodeClass(Bytecodes._ifnull, BytecodeIf.class); |
| addBytecodeClass(Bytecodes._ifnonnull, BytecodeIf.class); |
| addBytecodeClass(Bytecodes._iinc, BytecodeIinc.class); |
| addBytecodeClass(Bytecodes._instanceof, BytecodeInstanceOf.class); |
| addBytecodeClass(Bytecodes._invokevirtual, BytecodeInvoke.class); |
| addBytecodeClass(Bytecodes._invokestatic, BytecodeInvoke.class); |
| addBytecodeClass(Bytecodes._invokespecial, BytecodeInvoke.class); |
| addBytecodeClass(Bytecodes._invokeinterface, BytecodeInvoke.class); |
| addBytecodeClass(Bytecodes._invokedynamic, BytecodeInvoke.class); |
| addBytecodeClass(Bytecodes._jsr, BytecodeJsr.class); |
| addBytecodeClass(Bytecodes._jsr_w, BytecodeJsrW.class); |
| addBytecodeClass(Bytecodes._iload, BytecodeLoad.class); |
| addBytecodeClass(Bytecodes._lload, BytecodeLoad.class); |
| addBytecodeClass(Bytecodes._fload, BytecodeLoad.class); |
| addBytecodeClass(Bytecodes._dload, BytecodeLoad.class); |
| addBytecodeClass(Bytecodes._aload, BytecodeLoad.class); |
| addBytecodeClass(Bytecodes._ldc, BytecodeLoadConstant.class); |
| addBytecodeClass(Bytecodes._ldc_w, BytecodeLoadConstant.class); |
| addBytecodeClass(Bytecodes._ldc2_w, BytecodeLoadConstant.class); |
| addBytecodeClass(Bytecodes._lookupswitch, BytecodeLookupswitch.class); |
| addBytecodeClass(Bytecodes._multianewarray, BytecodeMultiANewArray.class); |
| addBytecodeClass(Bytecodes._new, BytecodeNew.class); |
| addBytecodeClass(Bytecodes._newarray, BytecodeNewArray.class); |
| addBytecodeClass(Bytecodes._putfield, BytecodePutField.class); |
| addBytecodeClass(Bytecodes._putstatic, BytecodePutStatic.class); |
| addBytecodeClass(Bytecodes._ret, BytecodeRet.class); |
| addBytecodeClass(Bytecodes._sipush, BytecodeSipush.class); |
| addBytecodeClass(Bytecodes._istore, BytecodeStore.class); |
| addBytecodeClass(Bytecodes._lstore, BytecodeStore.class); |
| addBytecodeClass(Bytecodes._fstore, BytecodeStore.class); |
| addBytecodeClass(Bytecodes._dstore, BytecodeStore.class); |
| addBytecodeClass(Bytecodes._astore, BytecodeStore.class); |
| addBytecodeClass(Bytecodes._tableswitch, BytecodeTableswitch.class); |
| } |
| |
| public BytecodeDisassembler(Method method) { |
| this.method = method; |
| } |
| |
| public Method getMethod() { |
| return method; |
| } |
| |
| public void decode(BytecodeVisitor visitor) { |
| visitor.prologue(method); |
| |
| BytecodeStream stream = new BytecodeStream(method); |
| int javacode = Bytecodes._illegal; |
| while ( (javacode = stream.next()) != Bytecodes._illegal) { |
| // look for special Bytecode class |
| int bci = stream.bci(); |
| int hotspotcode = method.getBytecodeOrBPAt(bci); |
| Class clazz = getBytecodeClass(javacode); |
| if (clazz == null) { |
| // check for fast_(i|a)_access_0 |
| clazz = getBytecodeClass(hotspotcode); |
| if (clazz == null) { |
| // use generic bytecode class |
| clazz = Bytecode.class; |
| } |
| } |
| |
| // All bytecode classes must have a constructor with signature |
| // (Lsun/jvm/hotspot/oops/Method;I)V |
| |
| Constructor cstr = null; |
| try { |
| cstr = clazz.getDeclaredConstructor(new Class[] { Method.class, Integer.TYPE }); |
| } catch(NoSuchMethodException nomethod) { |
| if (Assert.ASSERTS_ENABLED) { |
| Assert.that(false, "Bytecode class without proper constructor!"); |
| } |
| } |
| |
| Bytecode bytecodeObj = null; |
| try { |
| bytecodeObj = (Bytecode)cstr.newInstance(new Object[] { method, new Integer(bci) }); |
| } catch (Exception exp) { |
| if (Assert.ASSERTS_ENABLED) { |
| Assert.that(false, "Bytecode instance of class " |
| + clazz.getName() + " can not be created!"); |
| } |
| } |
| |
| if (stream.isWide()) { |
| visitor.visit(new Bytecode(method, bci - 1)); |
| } |
| |
| try { |
| visitor.visit(bytecodeObj); |
| } catch(ClassCastException castfail) { |
| castfail.printStackTrace(); |
| System.err.println(method.getAddress() + " " + bci); |
| } |
| } |
| |
| visitor.epilogue(); |
| } |
| } |