SPARCHotSpotLeaveCurrentStackFrameOp.java revision 12651:6ef01bd40ce2 
1/*
2 * Copyright (c) 2014, 2015, 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.sparc;
24
25import static jdk.vm.ci.sparc.SPARC.i0;
26import static jdk.vm.ci.sparc.SPARC.i1;
27import static jdk.vm.ci.sparc.SPARC.i2;
28import static jdk.vm.ci.sparc.SPARC.i3;
29import static jdk.vm.ci.sparc.SPARC.i4;
30import static jdk.vm.ci.sparc.SPARC.o0;
31import static jdk.vm.ci.sparc.SPARC.o1;
32import static jdk.vm.ci.sparc.SPARC.o2;
33import static jdk.vm.ci.sparc.SPARC.o3;
34import static jdk.vm.ci.sparc.SPARC.o4;
35
36import org.graalvm.compiler.asm.sparc.SPARCMacroAssembler;
37import org.graalvm.compiler.lir.LIRInstructionClass;
38import org.graalvm.compiler.lir.Opcode;
39import org.graalvm.compiler.lir.asm.CompilationResultBuilder;
40import org.graalvm.compiler.lir.sparc.SPARCLIRInstruction;
41
42/**
43 * Pops the current frame off the stack.
44 */
45@Opcode("LEAVE_CURRENT_STACK_FRAME")
46final class SPARCHotSpotLeaveCurrentStackFrameOp extends SPARCLIRInstruction {
47    public static final LIRInstructionClass<SPARCHotSpotLeaveCurrentStackFrameOp> TYPE = LIRInstructionClass.create(SPARCHotSpotLeaveCurrentStackFrameOp.class);
48
49    SPARCHotSpotLeaveCurrentStackFrameOp() {
50        super(TYPE);
51    }
52
53    @Override
54    public void emitCode(CompilationResultBuilder crb, SPARCMacroAssembler masm) {
55        // Save O registers over restore.
56        masm.mov(o0, i0);
57        masm.mov(o1, i1);
58        masm.mov(o2, i2);
59        masm.mov(o3, i3);
60        masm.mov(o4, i4);
61
62        crb.frameContext.leave(crb);
63    }
64
65    @Override
66    public boolean leavesRegisterWindow() {
67        return true;
68    }
69}
70