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  */
  23 package org.graalvm.compiler.hotspot.sparc;
  24 
  25 import static jdk.vm.ci.sparc.SPARC.i0;
  26 import static jdk.vm.ci.sparc.SPARC.i1;
  27 import static jdk.vm.ci.sparc.SPARC.i2;
  28 import static jdk.vm.ci.sparc.SPARC.i3;
  29 import static jdk.vm.ci.sparc.SPARC.i4;
  30 import static jdk.vm.ci.sparc.SPARC.o0;
  31 import static jdk.vm.ci.sparc.SPARC.o1;
  32 import static jdk.vm.ci.sparc.SPARC.o2;
  33 import static jdk.vm.ci.sparc.SPARC.o3;
  34 import static jdk.vm.ci.sparc.SPARC.o4;
  35 
  36 import org.graalvm.compiler.asm.sparc.SPARCMacroAssembler;
  37 import org.graalvm.compiler.lir.LIRInstructionClass;
  38 import org.graalvm.compiler.lir.Opcode;
  39 import org.graalvm.compiler.lir.asm.CompilationResultBuilder;
  40 import org.graalvm.compiler.lir.sparc.SPARCLIRInstruction;
  41 
  42 /**
  43  * Pops the current frame off the stack.
  44  */
  45 @Opcode("LEAVE_CURRENT_STACK_FRAME")
  46 final 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 }