Mercurial > hg > truffle
view graal/com.oracle.graal.hotspot.amd64/src/com/oracle/graal/hotspot/amd64/AMD64SafepointOp.java @ 10792:7a8d6ba83a04
SPARC: fixes and more stuff works
author | twisti |
---|---|
date | Tue, 16 Jul 2013 17:41:21 -0700 |
parents | 063a712fe8d8 |
children | 19a7856e3ab9 |
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/* * Copyright (c) 2011, 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 static com.oracle.graal.amd64.AMD64.*; import static com.oracle.graal.phases.GraalOptions.*; import sun.misc.*; import com.oracle.graal.api.code.*; import com.oracle.graal.api.meta.*; import com.oracle.graal.asm.amd64.*; import com.oracle.graal.hotspot.*; import com.oracle.graal.hotspot.bridge.*; import com.oracle.graal.lir.*; import com.oracle.graal.lir.amd64.*; import com.oracle.graal.lir.asm.*; import com.oracle.graal.nodes.spi.*; /** * Emits a safepoint poll. */ @Opcode("SAFEPOINT") public class AMD64SafepointOp extends AMD64LIRInstruction { private static final Unsafe unsafe = Unsafe.getUnsafe(); @State protected LIRFrameState state; @Temp({OperandFlag.REG}) private AllocatableValue temp; private final HotSpotVMConfig config; public AMD64SafepointOp(LIRFrameState state, HotSpotVMConfig config, LIRGeneratorTool tool) { this.state = state; this.config = config; temp = tool.newVariable(tool.target().wordKind); } @Override public void emitCode(TargetMethodAssembler tasm, AMD64MacroAssembler asm) { int pos = asm.codeBuffer.position(); int offset = SafepointPollOffset.getValue() % unsafe.pageSize(); RegisterValue scratch = (RegisterValue) temp; if (config.isPollingPageFar) { asm.movq(scratch.getRegister(), config.safepointPollingAddress + offset); tasm.recordMark(Marks.MARK_POLL_FAR); tasm.recordInfopoint(pos, state, InfopointReason.SAFEPOINT); asm.movq(scratch.getRegister(), new AMD64Address(scratch.getRegister())); } else { tasm.recordMark(Marks.MARK_POLL_NEAR); tasm.recordInfopoint(pos, state, InfopointReason.SAFEPOINT); // The C++ code transforms the polling page offset into an RIP displacement // to the real address at that offset in the polling page. asm.movq(scratch.getRegister(), new AMD64Address(rip, offset)); } } }