Mercurial > hg > truffle
view graal/com.oracle.graal.hotspot.sparc/src/com/oracle/graal/hotspot/sparc/SPARCHotSpotLeaveUnpackFramesStackFrameOp.java @ 21113:0cf5897db25a
Better assertion message for NULL deference in graalJavaAccess
author | Tom Rodriguez <tom.rodriguez@oracle.com> |
---|---|
date | Wed, 22 Apr 2015 16:42:05 -0700 |
parents | 96ab2078eeaf |
children | 48c1ebd24120 |
line wrap: on
line source
/* * Copyright (c) 2014, 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 com.oracle.graal.hotspot.sparc; 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.asm.*; import com.oracle.graal.lir.sparc.*; /** * 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 { public static final LIRInstructionClass<SPARCHotSpotLeaveUnpackFramesStackFrameOp> TYPE = LIRInstructionClass.create(SPARCHotSpotLeaveUnpackFramesStackFrameOp.class); 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) { super(TYPE); 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}. */ masm.mov(l7, thread); SPARCAddress lastJavaPc = new SPARCAddress(thread, threadLastJavaPcOffset); // We borrow the threads lastJavaPC to transfer the value from float to i0 masm.stdf(SPARCSaveRegistersOp.RETURN_REGISTER_STORAGE, lastJavaPc); masm.ldx(lastJavaPc, i0); // Clear last Java frame values. masm.stx(g0, lastJavaPc); masm.stx(g0, new SPARCAddress(thread, threadLastJavaSpOffset)); masm.stw(g0, new SPARCAddress(thread, threadJavaFrameAnchorFlagsOffset)); } }