--- /dev/null 2016-05-31 09:42:47.975716356 -0700 +++ new/src/jdk.vm.compiler/share/classes/org.graalvm.compiler.hotspot.sparc/src/org/graalvm/compiler/hotspot/sparc/SPARCHotSpotJumpToExceptionHandlerInCallerOp.java 2016-12-07 13:49:45.739160448 -0800 @@ -0,0 +1,81 @@ +/* + * Copyright (c) 2012, 2015, 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.sparc; + +import static org.graalvm.compiler.lir.LIRInstruction.OperandFlag.REG; +import static jdk.vm.ci.code.ValueUtil.asRegister; +import static jdk.vm.ci.sparc.SPARC.g0; +import static jdk.vm.ci.sparc.SPARC.l7; +import static jdk.vm.ci.sparc.SPARC.sp; + +import org.graalvm.compiler.asm.sparc.SPARCAddress; +import org.graalvm.compiler.asm.sparc.SPARCAssembler.CC; +import org.graalvm.compiler.asm.sparc.SPARCAssembler.ConditionFlag; +import org.graalvm.compiler.asm.sparc.SPARCMacroAssembler; +import org.graalvm.compiler.asm.sparc.SPARCMacroAssembler.ScratchRegister; +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 SPARCHotSpotJumpToExceptionHandlerInCallerOp extends SPARCHotSpotEpilogueOp { + + public static final LIRInstructionClass TYPE = LIRInstructionClass.create(SPARCHotSpotJumpToExceptionHandlerInCallerOp.class); + public static final SizeEstimate SIZE = SizeEstimate.create(5); + + @Use(REG) AllocatableValue handlerInCallerPc; + @Use(REG) AllocatableValue exception; + @Use(REG) AllocatableValue exceptionPc; + private final Register thread; + private final int isMethodHandleReturnOffset; + + SPARCHotSpotJumpToExceptionHandlerInCallerOp(AllocatableValue handlerInCallerPc, AllocatableValue exception, AllocatableValue exceptionPc, int isMethodHandleReturnOffset, Register thread) { + super(TYPE, SIZE); + this.handlerInCallerPc = handlerInCallerPc; + this.exception = exception; + this.exceptionPc = exceptionPc; + this.isMethodHandleReturnOffset = isMethodHandleReturnOffset; + this.thread = thread; + } + + @Override + public void emitCode(CompilationResultBuilder crb, SPARCMacroAssembler masm) { + // Restore SP from L7 if the exception PC is a method handle call site. + SPARCAddress dst = new SPARCAddress(thread, isMethodHandleReturnOffset); + try (ScratchRegister scratch = masm.getScratchRegister()) { + Register scratchReg = scratch.getRegister(); + masm.lduw(dst, scratchReg); + masm.cmp(scratchReg, scratchReg); + masm.movcc(ConditionFlag.NotZero, CC.Icc, l7, sp); + } + masm.jmpl(asRegister(handlerInCallerPc), 0, g0); + leaveFrame(crb); // Delay slot + } +}