Mercurial > hg > graal-compiler
view graal/com.oracle.graal.hotspot.sparc/src/com/oracle/graal/hotspot/sparc/SPARCHotSpotLeaveUnpackFramesStackFrameOp.java @ 18995:a2cb19764970
Rename MergeNode to AbstractMergeNode.
author | Thomas Wuerthinger <thomas.wuerthinger@oracle.com> |
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date | Wed, 28 Jan 2015 01:04:20 +0100 |
parents | 2e7b0bb73f2f |
children | 8fc336a04d77 f1b4f2613702 |
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/* * Copyright (c) 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.sparc; import static com.oracle.graal.asm.sparc.SPARCMacroAssembler.*; import static com.oracle.graal.sparc.SPARC.*; import com.oracle.graal.api.code.*; import com.oracle.graal.asm.sparc.*; import com.oracle.graal.hotspot.*; import com.oracle.graal.lir.*; import com.oracle.graal.lir.sparc.*; import com.oracle.graal.lir.asm.*; /** * Emits code that leaves a stack frame which is tailored to call the C++ method * {@link HotSpotBackend#UNPACK_FRAMES Deoptimization::unpack_frames}. */ @Opcode("LEAVE_UNPACK_FRAMES_STACK_FRAME") final class SPARCHotSpotLeaveUnpackFramesStackFrameOp extends SPARCLIRInstruction { private final Register thread; private final int threadLastJavaSpOffset; private final int threadLastJavaPcOffset; private final int threadJavaFrameAnchorFlagsOffset; SPARCHotSpotLeaveUnpackFramesStackFrameOp(Register thread, int threadLastJavaSpOffset, int threadLastJavaPcOffset, int threadJavaFrameAnchorFlagsOffset) { this.thread = thread; this.threadLastJavaSpOffset = threadLastJavaSpOffset; this.threadLastJavaPcOffset = threadLastJavaPcOffset; this.threadJavaFrameAnchorFlagsOffset = threadJavaFrameAnchorFlagsOffset; } @Override public void emitCode(CompilationResultBuilder crb, SPARCMacroAssembler masm) { /* * Safe thread register manually since we are not using LEAF_SP for {@link * DeoptimizationStub#UNPACK_FRAMES}. */ new Mov(l7, thread).emit(masm); SPARCAddress lastJavaPc = new SPARCAddress(thread, threadLastJavaPcOffset); // We borrow the threads lastJavaPC to transfer the value from float to i0 new Stdf(SPARCSaveRegistersOp.RETURN_REGISTER_STORAGE, lastJavaPc).emit(masm); new Ldx(lastJavaPc, i0).emit(masm); // Clear last Java frame values. new Stx(g0, lastJavaPc).emit(masm); new Stx(g0, new SPARCAddress(thread, threadLastJavaSpOffset)).emit(masm); new Stw(g0, new SPARCAddress(thread, threadJavaFrameAnchorFlagsOffset)).emit(masm); } }