Mercurial > hg > graal-jvmci-8
diff graal/Compiler/src/com/sun/c1x/ir/NativeCall.java @ 2507:9ec15d6914ca
Pull over of compiler from maxine repository.
author | Thomas Wuerthinger <thomas@wuerthinger.net> |
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date | Wed, 27 Apr 2011 11:43:22 +0200 |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/graal/Compiler/src/com/sun/c1x/ir/NativeCall.java Wed Apr 27 11:43:22 2011 +0200 @@ -0,0 +1,119 @@ +/* + * Copyright (c) 2010, 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.sun.c1x.ir; + +import com.sun.c1x.debug.*; +import com.sun.c1x.value.*; +import com.sun.cri.ri.*; + +/** + * Represents a call to a native function from within a native method stub. + * + * @author Doug Simon + */ +public final class NativeCall extends StateSplit { + + /** + * The instruction that produces the native function address for this native call. + */ + private Value address; + + /** + * The native method for this native call. + */ + public final RiMethod nativeMethod; + + /** + * The signature of the call which is derived from {@link #nativeMethod} but is not + * the same as its {@linkplain RiMethod#signature() signature}. + */ + public final RiSignature signature; + + /** + * The list of instructions that produce the arguments for this native call. + */ + public final Value[] arguments; + + /** + * Constructs a new NativeCall instruction. + * + * @param nativeMethod TODO + * @param signature TODO + * @param address TODO + * @param args the list of instructions producing arguments to the invocation + * @param stateBefore the state before executing the invocation + */ + public NativeCall(RiMethod nativeMethod, RiSignature signature, Value address, Value[] args, FrameState stateBefore) { + super(signature.returnKind().stackKind(), stateBefore); + this.address = address; + this.nativeMethod = nativeMethod; + this.arguments = args; + this.signature = signature; + assert nativeMethod.jniSymbol() != null; + } + + /** + * The native function may call back into the VM which may call method that can trap. + */ + @Override + public boolean canTrap() { + return true; + } + + /** + * Gets the instruction that produces the native function address for this native call. + * @return the instruction + */ + public Value address() { + return address; + } + + @Override + public void inputValuesDo(ValueClosure closure) { + for (int i = 0; i < arguments.length; i++) { + Value arg = arguments[i]; + if (arg != null) { + arguments[i] = closure.apply(arg); + assert arguments[i] != null; + } + } + address = closure.apply(address); + } + + @Override + public void accept(ValueVisitor v) { + v.visitNativeCall(this); + } + + @Override + public void print(LogStream out) { + out.print(nativeMethod.jniSymbol()).print('('); + for (int i = 0; i < arguments.length; i++) { + if (i > 0) { + out.print(", "); + } + out.print(arguments[i]); + } + out.print(')'); + } +}