Mercurial > hg > graal-compiler
view graal/com.oracle.graal.hotspot.sparc/src/com/oracle/graal/hotspot/sparc/SPARCHotSpotEnterUnpackFramesStackFrameOp.java @ 15805:dffc37fa7157
initialize HotSpotVMConfig fields efficiently from C++
author | Tom Rodriguez <tom.rodriguez@oracle.com> |
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date | Tue, 20 May 2014 13:46:34 -0700 |
parents | 109d6c7c40b5 |
children | 42eaa579e134 |
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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.sparc.SPARC.*; import static com.oracle.graal.api.code.ValueUtil.*; import static com.oracle.graal.asm.sparc.SPARCMacroAssembler.*; import static com.oracle.graal.lir.LIRInstruction.OperandFlag.*; import com.oracle.graal.api.code.*; import com.oracle.graal.api.meta.*; import com.oracle.graal.asm.sparc.*; import com.oracle.graal.hotspot.stubs.*; import com.oracle.graal.lir.*; import com.oracle.graal.lir.sparc.*; import com.oracle.graal.lir.asm.*; /** * Emits code that enters a stack frame which is tailored to call the C++ method * {@link DeoptimizationStub#UNPACK_FRAMES Deoptimization::unpack_frames}. */ @Opcode("ENTER_UNPACK_FRAMES_STACK_FRAME") final class SPARCHotSpotEnterUnpackFramesStackFrameOp extends SPARCLIRInstruction { 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) { 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. new Mov(senderSpRegister, o5).emit(masm); // Load final frame PC. new Mov(framePcRegister, o7).emit(masm); // Allocate a full sized frame. new Save(sp, -totalFrameSize, sp).emit(masm); new Mov(i0, o0).emit(masm); new Mov(i1, o1).emit(masm); new Mov(i2, o2).emit(masm); new Mov(i3, o3).emit(masm); new Mov(i4, o4).emit(masm); // Set up last Java values. new Add(sp, STACK_BIAS, scratchRegister).emit(masm); new Stx(scratchRegister, new SPARCAddress(thread, threadLastJavaSpOffset)).emit(masm); // Clear last Java PC. new Stx(g0, new SPARCAddress(thread, threadLastJavaPcOffset)).emit(masm); /* * Safe thread register manually since we are not using LEAF_SP for {@link * DeoptimizationStub#UNPACK_FRAMES}. */ new Mov(thread, l7).emit(masm); } }