Mercurial > hg > truffle
view graal/com.oracle.graal.hotspot.amd64/src/com/oracle/graal/hotspot/amd64/AMD64HotSpotJumpToExceptionHandlerInCallerOp.java @ 21673:5024c80224c7
moved com.oracle.graal.[amd64|sparc] to com.oracle.jvmci.[amd64|sparc] (JBS:GRAAL-53)
author | Doug Simon <doug.simon@oracle.com> |
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date | Tue, 02 Jun 2015 22:11:52 +0200 |
parents | 47a3d4b3ccb3 |
children | 6df25b1418be |
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/* * 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 com.oracle.graal.hotspot.amd64; import com.oracle.jvmci.code.Register; import com.oracle.jvmci.meta.AllocatableValue; import static com.oracle.jvmci.amd64.AMD64.*; import static com.oracle.jvmci.code.ValueUtil.*; import static com.oracle.graal.lir.LIRInstruction.OperandFlag.*; import com.oracle.graal.asm.amd64.*; import com.oracle.graal.asm.amd64.AMD64Assembler.ConditionFlag; import com.oracle.graal.lir.*; import com.oracle.graal.lir.StandardOp.BlockEndOp; import com.oracle.graal.lir.asm.*; /** * 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 AMD64HotSpotEpilogueOp implements BlockEndOp { 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, AllocatableValue savedRbp) { super(TYPE, savedRbp); 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); // 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)); } }