Mercurial > hg > graal-compiler
view graal/com.oracle.graal.hotspot.amd64/src/com/oracle/graal/hotspot/amd64/AMD64HotspotDirectStaticCallOp.java @ 8333:e9c6fc513719
Remove last usages of scratch register. Separate runtime calls from normal method calls in LIR.
author | Thomas Wuerthinger <thomas.wuerthinger@oracle.com> |
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date | Sun, 17 Mar 2013 23:46:58 +0100 |
parents | c66aa27ef4da |
children | fbeda9df497d |
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/* * Copyright (c) 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 com.oracle.graal.hotspot.amd64; import com.oracle.graal.amd64.*; import com.oracle.graal.api.meta.*; import com.oracle.graal.asm.amd64.*; import com.oracle.graal.hotspot.bridge.*; import com.oracle.graal.lir.*; import com.oracle.graal.lir.LIRInstruction.Opcode; import com.oracle.graal.lir.amd64.*; import com.oracle.graal.lir.amd64.AMD64Call.DirectCallOp; import com.oracle.graal.lir.asm.*; import com.oracle.graal.nodes.java.MethodCallTargetNode.InvokeKind; /** * A direct call that complies with the conventions for such calls in HotSpot. In particular, for * calls using an inline cache, a MOVE instruction is emitted just prior to the aligned direct call. * This instruction (which moves 0L in RAX) is patched by the C++ Graal code to replace the 0L * constant with Universe::non_oop_word(), a special sentinel used for the initial value of the * Klass in an inline cache. It puts the called method into rbx before calling. */ @Opcode("CALL_DIRECT") final class AMD64HotspotDirectStaticCallOp extends DirectCallOp { private final Constant metaspaceMethod; private final InvokeKind invokeKind; AMD64HotspotDirectStaticCallOp(ResolvedJavaMethod target, Value result, Value[] parameters, Value[] temps, LIRFrameState state, InvokeKind invokeKind, Constant metaspaceMethod) { super(target, result, parameters, temps, state); assert invokeKind == InvokeKind.Static || invokeKind == InvokeKind.Special; this.metaspaceMethod = metaspaceMethod; this.invokeKind = invokeKind; } @Override public void emitCode(TargetMethodAssembler tasm, AMD64MacroAssembler masm) { // The mark for an invocation that uses an inline cache must be placed at the // instruction // that loads the Klass from the inline cache so that the C++ code can find it // and replace the inline 0L value with Universe::non_oop_word() AMD64Move.move(tasm, masm, AMD64.rbx.asValue(Kind.Long), metaspaceMethod); tasm.recordMark(invokeKind == InvokeKind.Static ? Marks.MARK_INVOKESTATIC : Marks.MARK_INVOKESPECIAL); AMD64Move.move(tasm, masm, AMD64.rax.asValue(Kind.Long), Constant.LONG_0); super.emitCode(tasm, masm); } }