1 /* 2 * Copyright (c) 2012, 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.amd64; 24 25 import static org.graalvm.compiler.lir.LIRInstruction.OperandFlag.REG; 26 import static jdk.vm.ci.code.ValueUtil.asRegister; 27 28 import org.graalvm.compiler.asm.amd64.AMD64MacroAssembler; 29 import org.graalvm.compiler.hotspot.GraalHotSpotVMConfig; 30 import org.graalvm.compiler.lir.LIRFrameState; 31 import org.graalvm.compiler.lir.LIRInstructionClass; 32 import org.graalvm.compiler.lir.Opcode; 33 import org.graalvm.compiler.lir.amd64.AMD64Call; 34 import org.graalvm.compiler.lir.amd64.AMD64Call.IndirectCallOp; 35 import org.graalvm.compiler.lir.asm.CompilationResultBuilder; 36 37 import jdk.vm.ci.amd64.AMD64; 38 import jdk.vm.ci.code.Register; 39 import jdk.vm.ci.meta.ResolvedJavaMethod; 40 import jdk.vm.ci.meta.Value; 41 42 /** 43 * A register indirect call that complies with the extra conventions for such calls in HotSpot. In 44 * particular, the metaspace Method of the callee must be in RBX for the case where a vtable entry's 45 * _from_compiled_entry is the address of an C2I adapter. Such adapters expect the target method to 46 * be in RBX. 47 */ 48 @Opcode("CALL_INDIRECT") 49 final class AMD64IndirectCallOp extends IndirectCallOp { 50 public static final LIRInstructionClass<AMD64IndirectCallOp> TYPE = LIRInstructionClass.create(AMD64IndirectCallOp.class); 51 52 /** 53 * Vtable stubs expect the metaspace Method in RBX. 54 */ 55 public static final Register METHOD = AMD64.rbx; 56 57 @Use({REG}) protected Value metaspaceMethod; 58 59 private final GraalHotSpotVMConfig config; 60 61 AMD64IndirectCallOp(ResolvedJavaMethod targetMethod, Value result, Value[] parameters, Value[] temps, Value metaspaceMethod, Value targetAddress, LIRFrameState state, 62 GraalHotSpotVMConfig config) { 63 super(TYPE, targetMethod, result, parameters, temps, targetAddress, state); 64 this.metaspaceMethod = metaspaceMethod; 65 this.config = config; 66 } 67 68 @Override 69 public void emitCode(CompilationResultBuilder crb, AMD64MacroAssembler masm) { 70 crb.recordMark(config.MARKID_INLINE_INVOKE); 71 Register callReg = asRegister(targetAddress); 72 assert !callReg.equals(METHOD); 73 AMD64Call.indirectCall(crb, masm, callReg, callTarget, state); 74 } 75 76 @Override 77 public void verify() { 78 super.verify(); 79 assert asRegister(metaspaceMethod).equals(METHOD); 80 } 81 }