1 /*
   2  * Copyright (c) 2016, 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 
  24 /**
  25  * @test
  26  * @requires vm.jvmci & (vm.simpleArch == "x64" | vm.simpleArch == "sparcv9")
  27  * @library /
  28  * @modules jdk.vm.ci/jdk.vm.ci.hotspot
  29  *          jdk.vm.ci/jdk.vm.ci.meta
  30  *          jdk.vm.ci/jdk.vm.ci.code
  31  *          jdk.vm.ci/jdk.vm.ci.code.site
  32  *          jdk.vm.ci/jdk.vm.ci.common
  33  *          jdk.vm.ci/jdk.vm.ci.runtime
  34  *          jdk.vm.ci/jdk.vm.ci.amd64
  35  *          jdk.vm.ci/jdk.vm.ci.sparc
  36  * @compile CodeInstallationTest.java DebugInfoTest.java TestAssembler.java TestHotSpotVMConfig.java amd64/AMD64TestAssembler.java sparc/SPARCTestAssembler.java
  37  * @run junit/othervm -XX:+UnlockExperimentalVMOptions -XX:+EnableJVMCI jdk.vm.ci.code.test.MaxOopMapStackOffsetTest
  38  */
  39 
  40 package jdk.vm.ci.code.test;
  41 
  42 import jdk.vm.ci.code.Location;
  43 import jdk.vm.ci.code.Register;
  44 import jdk.vm.ci.common.JVMCIError;
  45 import jdk.vm.ci.meta.JavaConstant;
  46 import jdk.vm.ci.meta.JavaKind;
  47 import org.junit.Test;
  48 
  49 public class MaxOopMapStackOffsetTest extends DebugInfoTest {
  50 
  51     public static int pass() {
  52         return 42;
  53     }
  54 
  55     public static int fail() {
  56         return 42;
  57     }
  58 
  59     private void test(String name, int offset) {
  60         Location location = Location.stack(offset);
  61                DebugInfoCompiler compiler = (asm, values) -> {
  62             asm.growFrame(offset);
  63             Register v = asm.emitLoadInt(0);
  64             asm.emitIntToStack(v);
  65             values[0] = JavaConstant.forInt(42);
  66             return null;
  67         };
  68         test(compiler, getMethod(name), 2, new Location[]{location}, new Location[1], new int[]{4}, JavaKind.Int);
  69     }
  70 
  71     private int maxOffset() {
  72         return config.maxOopMapStackOffset;
  73     }
  74 
  75     private int wordSize() {
  76         return config.heapWordSize;
  77     }
  78 
  79     @Test(expected = JVMCIError.class)
  80     public void failTooLargeOffset() {
  81         // This should throw a JVMCIError during installation because the offset is too large.
  82         test("fail", maxOffset() + wordSize());
  83     }
  84 
  85     @Test
  86     public void passWithLargeOffset() {
  87         test("pass", maxOffset());
  88     }
  89 }