Mercurial > hg > truffle
view graal/com.oracle.graal.hotspot.sparc/src/com/oracle/graal/hotspot/sparc/SPARCHotSpotEnterUnpackFramesStackFrameOp.java @ 21708:6df25b1418be
moved com.oracle.asm.** to jvmci-util.jar (JBS:GRAAL-53)
author | Doug Simon <doug.simon@oracle.com> |
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date | Wed, 03 Jun 2015 18:06:44 +0200 |
parents | 5024c80224c7 |
children | d915361cc3a1 |
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/* * 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 com.oracle.jvmci.asm.sparc.*; import com.oracle.jvmci.code.Register; import com.oracle.jvmci.meta.AllocatableValue; import static com.oracle.jvmci.code.ValueUtil.*; import static com.oracle.jvmci.sparc.SPARC.*; import static com.oracle.graal.lir.LIRInstruction.OperandFlag.*; 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 enters a stack frame which is tailored to call the C++ method * {@link HotSpotBackend#UNPACK_FRAMES Deoptimization::unpack_frames}. */ @Opcode("ENTER_UNPACK_FRAMES_STACK_FRAME") final class SPARCHotSpotEnterUnpackFramesStackFrameOp extends SPARCLIRInstruction { public static final LIRInstructionClass<SPARCHotSpotEnterUnpackFramesStackFrameOp> TYPE = LIRInstructionClass.create(SPARCHotSpotEnterUnpackFramesStackFrameOp.class); private final Register thread; private final int threadLastJavaSpOffset; private final int threadLastJavaPcOffset; @Alive(REG) AllocatableValue framePc; @Alive(REG) AllocatableValue senderSp; @Temp(REG) AllocatableValue scratch; SPARCHotSpotEnterUnpackFramesStackFrameOp(Register thread, int threadLastJavaSpOffset, int threadLastJavaPcOffset, AllocatableValue framePc, AllocatableValue senderSp, AllocatableValue scratch) { super(TYPE); this.thread = thread; this.threadLastJavaSpOffset = threadLastJavaSpOffset; this.threadLastJavaPcOffset = threadLastJavaPcOffset; this.framePc = framePc; this.senderSp = senderSp; this.scratch = scratch; } @Override public void emitCode(CompilationResultBuilder crb, SPARCMacroAssembler masm) { final int totalFrameSize = crb.frameMap.totalFrameSize(); Register framePcRegister = asRegister(framePc); Register senderSpRegister = asRegister(senderSp); Register scratchRegister = asRegister(scratch); // Save final sender SP to O5_savedSP. masm.mov(senderSpRegister, o5); // Load final frame PC. masm.mov(framePcRegister, o7); // Allocate a full sized frame. masm.save(sp, -totalFrameSize, sp); masm.mov(i0, o0); masm.mov(i1, o1); masm.mov(i2, o2); masm.mov(i3, o3); masm.mov(i4, o4); // Set up last Java values. masm.add(sp, STACK_BIAS, scratchRegister); masm.stx(scratchRegister, new SPARCAddress(thread, threadLastJavaSpOffset)); // Clear last Java PC. masm.stx(g0, new SPARCAddress(thread, threadLastJavaPcOffset)); /* * Safe thread register manually since we are not using LEAF_SP for {@link * DeoptimizationStub#UNPACK_FRAMES}. */ masm.mov(thread, l7); } @Override public boolean leavesRegisterWindow() { return true; } }