Mercurial > hg > truffle
diff agent/src/share/classes/sun/jvm/hotspot/interpreter/BytecodeInvoke.java @ 0:a61af66fc99e jdk7-b24
Initial load
author | duke |
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date | Sat, 01 Dec 2007 00:00:00 +0000 |
parents | |
children | c18cbe5936b8 |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/agent/src/share/classes/sun/jvm/hotspot/interpreter/BytecodeInvoke.java Sat Dec 01 00:00:00 2007 +0000 @@ -0,0 +1,127 @@ +/* + * Copyright 2001-2003 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 sun.jvm.hotspot.oops.*; +import sun.jvm.hotspot.runtime.*; +import sun.jvm.hotspot.utilities.*; + +public class BytecodeInvoke extends BytecodeWithCPIndex { + BytecodeInvoke(Method method, int bci) { + super(method, bci); + } + + public static BytecodeInvoke at(Method method, int bci) { + BytecodeInvoke b = new BytecodeInvoke(method, bci); + if (Assert.ASSERTS_ENABLED) { + b.verify(); + } + return b; + } + + /** Like at, but returns null if the BCI is not at an invoke */ + public static BytecodeInvoke atCheck(Method method, int bci) { + BytecodeInvoke b = new BytecodeInvoke(method, bci); + return (b.isValid() ? b : null); + } + + public static BytecodeInvoke at(BytecodeStream bcs) { + return new BytecodeInvoke(bcs.method(), bcs.bci()); + } + + // returns the name of the invoked method + public Symbol name() { + ConstantPool cp = method().getConstants(); + return cp.getNameRefAt(index()); + } + + // returns the signature of the invoked method + public Symbol signature() { + ConstantPool cp = method().getConstants(); + return cp.getSignatureRefAt(index()); + } + + public Method getInvokedMethod() { + return method().getConstants().getMethodRefAt(index()); + } + + // returns the result type (see BasicType.java) of the invoke + public int resultType() { + ResultTypeFinder rts = new ResultTypeFinder(signature()); + rts.iterate(); + return rts.type(); + } + + public int adjustedInvokeCode() { + return javaCode(); + } + + // "specified" method (from constant pool) + // FIXME: elided for now + // public Method staticTarget(); + + // Testers + public boolean isInvokeinterface() { return adjustedInvokeCode() == Bytecodes._invokeinterface; } + public boolean isInvokevirtual() { return adjustedInvokeCode() == Bytecodes._invokevirtual; } + public boolean isInvokestatic() { return adjustedInvokeCode() == Bytecodes._invokestatic; } + public boolean isInvokespecial() { return adjustedInvokeCode() == Bytecodes._invokespecial; } + + public boolean isValid() { return isInvokeinterface() || + isInvokevirtual() || + isInvokestatic() || + isInvokespecial(); } + public void verify() { + if (Assert.ASSERTS_ENABLED) { + Assert.that(isValid(), "check invoke"); + } + } + + public String toString() { + StringBuffer buf = new StringBuffer(); + buf.append(getJavaBytecodeName()); + buf.append(spaces); + buf.append('#'); + buf.append(Integer.toString(indexForFieldOrMethod())); + buf.append(" [Method "); + StringBuffer sigBuf = new StringBuffer(); + new SignatureConverter(signature(), sigBuf).iterateReturntype(); + buf.append(sigBuf.toString().replace('/', '.')); + buf.append(spaces); + buf.append(name().asString()); + buf.append('('); + sigBuf = new StringBuffer(); + new SignatureConverter(signature(), sigBuf).iterateParameters(); + buf.append(sigBuf.toString().replace('/', '.')); + buf.append(')'); + buf.append(']'); + if (code() != javaCode()) { + buf.append(spaces); + buf.append('['); + buf.append(getBytecodeName()); + buf.append(']'); + } + return buf.toString(); + } +}