| /* |
| * Copyright (c) 2012, 2014, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| package org.graalvm.compiler.hotspot.amd64; |
| |
| import static org.graalvm.compiler.lir.LIRInstruction.OperandFlag.REG; |
| import static jdk.vm.ci.amd64.AMD64.rbp; |
| import static jdk.vm.ci.amd64.AMD64.rsp; |
| import static jdk.vm.ci.code.ValueUtil.asRegister; |
| |
| import org.graalvm.compiler.asm.amd64.AMD64Address; |
| import org.graalvm.compiler.asm.amd64.AMD64Assembler.ConditionFlag; |
| import org.graalvm.compiler.asm.amd64.AMD64MacroAssembler; |
| import org.graalvm.compiler.lir.LIRInstructionClass; |
| import org.graalvm.compiler.lir.Opcode; |
| import org.graalvm.compiler.lir.asm.CompilationResultBuilder; |
| |
| import jdk.vm.ci.code.Register; |
| import jdk.vm.ci.meta.AllocatableValue; |
| |
| /** |
| * Sets up the arguments for an exception handler in the callers frame, removes the current frame |
| * and jumps to the handler. |
| */ |
| @Opcode("JUMP_TO_EXCEPTION_HANDLER_IN_CALLER") |
| final class AMD64HotSpotJumpToExceptionHandlerInCallerOp extends AMD64HotSpotEpilogueBlockEndOp { |
| |
| public static final LIRInstructionClass<AMD64HotSpotJumpToExceptionHandlerInCallerOp> TYPE = LIRInstructionClass.create(AMD64HotSpotJumpToExceptionHandlerInCallerOp.class); |
| |
| @Use(REG) AllocatableValue handlerInCallerPc; |
| @Use(REG) AllocatableValue exception; |
| @Use(REG) AllocatableValue exceptionPc; |
| private final Register thread; |
| private final int isMethodHandleReturnOffset; |
| |
| AMD64HotSpotJumpToExceptionHandlerInCallerOp(AllocatableValue handlerInCallerPc, AllocatableValue exception, AllocatableValue exceptionPc, int isMethodHandleReturnOffset, Register thread) { |
| super(TYPE); |
| this.handlerInCallerPc = handlerInCallerPc; |
| this.exception = exception; |
| this.exceptionPc = exceptionPc; |
| this.isMethodHandleReturnOffset = isMethodHandleReturnOffset; |
| this.thread = thread; |
| } |
| |
| @Override |
| public void emitCode(CompilationResultBuilder crb, AMD64MacroAssembler masm) { |
| leaveFrameAndRestoreRbp(crb, masm); |
| |
| // Discard the return address, thus completing restoration of caller frame |
| masm.incrementq(rsp, 8); |
| |
| if (System.getProperty("java.specification.version").compareTo("1.8") < 0) { |
| // Restore rsp from rbp if the exception PC is a method handle call site. |
| AMD64Address dst = new AMD64Address(thread, isMethodHandleReturnOffset); |
| masm.cmpl(dst, 0); |
| masm.cmovq(ConditionFlag.NotEqual, rsp, rbp); |
| } |
| |
| masm.jmp(asRegister(handlerInCallerPc)); |
| } |
| } |