Mercurial > hg > truffle
diff agent/src/share/classes/sun/jvm/hotspot/interpreter/BytecodeDisassembler.java @ 0:a61af66fc99e jdk7-b24
Initial load
author | duke |
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date | Sat, 01 Dec 2007 00:00:00 +0000 |
parents | |
children | bc32f286fae0 |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/agent/src/share/classes/sun/jvm/hotspot/interpreter/BytecodeDisassembler.java Sat Dec 01 00:00:00 2007 +0000 @@ -0,0 +1,169 @@ +/* + * Copyright 2002 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. + * + * 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 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._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); + + // only special fast_xxx cases. others are handled differently. + addBytecodeClass(Bytecodes._fast_iaccess_0, BytecodeFastAAccess0.class); + addBytecodeClass(Bytecodes._fast_aaccess_0, BytecodeFastIAccess0.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!"); + } + } + + Object bytecodeObj = null; + try { + bytecodeObj = 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((Bytecode) bytecodeObj); + } catch(ClassCastException castfail) { + if (Assert.ASSERTS_ENABLED) { + Assert.that(false, clazz.getName() + " is not derived from Bytecode!"); + } + } + } + + visitor.epilogue(); + } +}