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 */ 23 package com.oracle.graal.lir.ptx; 24 25 import static com.oracle.graal.lir.LIRInstruction.OperandFlag.*; 26 27 import com.oracle.graal.api.meta.*; 28 import com.oracle.graal.asm.*; 29 import com.oracle.graal.asm.ptx.*; 30 import com.oracle.graal.lir.*; 31 import com.oracle.graal.lir.asm.*; 32 import com.oracle.graal.nodes.calc.*; 33 34 public class PTXControlFlow { 35 36 public static class ReturnOp extends PTXLIRInstruction { 37 38 @Use({REG, ILLEGAL}) protected Value x; 39 40 public ReturnOp(Value x) { 41 this.x = x; 42 } 43 44 @Override 45 public void emitCode(TargetMethodAssembler tasm, PTXAssembler masm) { 46 if (tasm.frameContext != null) { 47 tasm.frameContext.leave(tasm); 48 } 49 masm.exit(); 50 } 51 } 52 53 public static class BranchOp extends PTXLIRInstruction implements StandardOp.BranchOp { 54 55 protected Condition condition; 56 protected LabelRef destination; 57 58 public BranchOp(Condition condition, LabelRef destination) { 59 this.condition = condition; 60 this.destination = destination; 61 } 62 63 @Override 64 public void emitCode(TargetMethodAssembler tasm, PTXAssembler masm) { 65 masm.at(); 66 Label l = destination.label(); 67 l.addPatchAt(tasm.asm.codeBuffer.position()); 68 String target = l.isBound() ? "L" + l.toString() : AbstractPTXAssembler.UNBOUND_TARGET; 69 masm.bra(target); 70 } 71 72 @Override 73 public LabelRef destination() { 74 return destination; 75 } 76 77 @Override 78 public void negate(LabelRef newDestination) { 79 destination = newDestination; 80 condition = condition.negate(); 81 } 82 } 83 }