AMD64HotSpotPushInterpreterFrameOp.java revision 12651:6ef01bd40ce2 
1/*
2 * Copyright (c) 2013, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 */
23package org.graalvm.compiler.hotspot.amd64;
24
25import static org.graalvm.compiler.lir.LIRInstruction.OperandFlag.REG;
26import static jdk.vm.ci.amd64.AMD64.rsp;
27import static jdk.vm.ci.code.ValueUtil.asRegister;
28
29import org.graalvm.compiler.asm.amd64.AMD64Address;
30import org.graalvm.compiler.asm.amd64.AMD64MacroAssembler;
31import org.graalvm.compiler.hotspot.GraalHotSpotVMConfig;
32import org.graalvm.compiler.lir.LIRInstructionClass;
33import org.graalvm.compiler.lir.Opcode;
34import org.graalvm.compiler.lir.amd64.AMD64LIRInstruction;
35import org.graalvm.compiler.lir.asm.CompilationResultBuilder;
36
37import jdk.vm.ci.code.Register;
38import jdk.vm.ci.meta.AllocatableValue;
39
40/**
41 * Pushes an interpreter frame to the stack.
42 */
43@Opcode("PUSH_INTERPRETER_FRAME")
44final class AMD64HotSpotPushInterpreterFrameOp extends AMD64LIRInstruction {
45    public static final LIRInstructionClass<AMD64HotSpotPushInterpreterFrameOp> TYPE = LIRInstructionClass.create(AMD64HotSpotPushInterpreterFrameOp.class);
46
47    @Alive(REG) AllocatableValue frameSize;
48    @Alive(REG) AllocatableValue framePc;
49    @Alive(REG) AllocatableValue senderSp;
50    @Alive(REG) AllocatableValue initialInfo;
51    private final GraalHotSpotVMConfig config;
52
53    AMD64HotSpotPushInterpreterFrameOp(AllocatableValue frameSize, AllocatableValue framePc, AllocatableValue senderSp, AllocatableValue initialInfo, GraalHotSpotVMConfig config) {
54        super(TYPE);
55        this.frameSize = frameSize;
56        this.framePc = framePc;
57        this.senderSp = senderSp;
58        this.initialInfo = initialInfo;
59        this.config = config;
60    }
61
62    @Override
63    public void emitCode(CompilationResultBuilder crb, AMD64MacroAssembler masm) {
64        final Register frameSizeRegister = asRegister(frameSize);
65        final Register framePcRegister = asRegister(framePc);
66        final Register senderSpRegister = asRegister(senderSp);
67        final Register initialInfoRegister = asRegister(initialInfo);
68        final int wordSize = 8;
69
70        // We'll push PC and BP by hand.
71        masm.subq(frameSizeRegister, 2 * wordSize);
72
73        // Push return address.
74        masm.push(framePcRegister);
75
76        // Prolog
77        masm.push(initialInfoRegister);
78        masm.movq(initialInfoRegister, rsp);
79        masm.subq(rsp, frameSizeRegister);
80
81        // This value is corrected by layout_activation_impl.
82        masm.movptr(new AMD64Address(initialInfoRegister, config.frameInterpreterFrameLastSpOffset * wordSize), 0);
83
84        // Make the frame walkable.
85        masm.movq(new AMD64Address(initialInfoRegister, config.frameInterpreterFrameSenderSpOffset * wordSize), senderSpRegister);
86    }
87}
88