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view graal/com.oracle.graal.hotspot.sparc/src/com/oracle/graal/hotspot/sparc/SPARCHotSpotRegisterConfig.java @ 11383:423c53e2fa7e
Merge
author | Erik Eckstein <erik.eckstein@oracle.com> |
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date | Wed, 21 Aug 2013 08:29:07 +0200 |
parents | 5a9d68c3a7d7 |
children | 0c38906450a0 |
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/* * Copyright (c) 2013, 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.phases.GraalOptions.*; import java.util.*; import com.oracle.graal.sparc.*; import com.oracle.graal.api.code.*; import com.oracle.graal.api.code.CallingConvention.Type; import com.oracle.graal.api.meta.*; import com.oracle.graal.graph.*; import com.oracle.graal.hotspot.*; import com.oracle.graal.lir.*; public class SPARCHotSpotRegisterConfig implements RegisterConfig { private final Architecture architecture; private final Register[] allocatable; private final HashMap<PlatformKind, Register[]> categorized = new HashMap<>(); private final RegisterAttributes[] attributesMap; @Override public Register[] getAllocatableRegisters() { return allocatable.clone(); } public Register[] getAllocatableRegisters(PlatformKind kind) { if (categorized.containsKey(kind)) { return categorized.get(kind); } ArrayList<Register> list = new ArrayList<>(); for (Register reg : getAllocatableRegisters()) { if (architecture.canStoreValue(reg.getRegisterCategory(), kind)) { list.add(reg); } } Register[] ret = list.toArray(new Register[0]); categorized.put(kind, ret); return ret; } @Override public RegisterAttributes[] getAttributesMap() { return attributesMap.clone(); } private final Register[] cpuCallerParameterRegisters = {o0, o1, o2, o3, o4, o5}; private final Register[] cpuCalleeParameterRegisters = {i0, i1, i2, i3, i4, i5}; private final Register[] fpuParameterRegisters = {f0, f1, f2, f3, f4, f5, f6, f7}; private final Register[] callerSaveRegisters = {g1, g3, g4, g5, o0, o1, o2, o3, o4, o5, o7}; /** * Registers saved by the callee. This lists all L and I registers which are saved in the * register window. {@link FrameMap} uses this array to calculate the spill area size. */ private final Register[] calleeSaveRegisters = {l0, l1, l2, l3, l4, l5, l6, l7, i0, i1, i2, i3, i4, i5, i6, i7}; private final CalleeSaveLayout csl; private static Register findRegister(String name, Register[] all) { for (Register reg : all) { if (reg.name.equals(name)) { return reg; } } throw new IllegalArgumentException("register " + name + " is not allocatable"); } private static Register[] initAllocatable(boolean reserveForHeapBase) { Register[] registers = null; // @formatter:off if (reserveForHeapBase) { registers = new Register[] { // TODO this is not complete o0, o1, o2, o3, o4, o5, /*o6,*/ o7, l0, l1, l2, l3, l4, l5, l6, l7, i0, i1, i2, i3, i4, i5, /*i6,*/ /*i7,*/ f0, f1, f2, f3, f4, f5, f6, f7 }; } else { registers = new Register[] { // TODO this is not complete o0, o1, o2, o3, o4, o5, /*o6,*/ o7, l0, l1, l2, l3, l4, l5, l6, l7, i0, i1, i2, i3, i4, i5, /*i6,*/ /*i7,*/ f0, f1, f2, f3, f4, f5, f6, f7 }; } // @formatter:on if (RegisterPressure.getValue() != null) { String[] names = RegisterPressure.getValue().split(","); Register[] regs = new Register[names.length]; for (int i = 0; i < names.length; i++) { regs[i] = findRegister(names[i], registers); } return regs; } return registers; } public SPARCHotSpotRegisterConfig(Architecture architecture, HotSpotVMConfig config) { this.architecture = architecture; csl = new CalleeSaveLayout(architecture, -1, -1, architecture.getWordSize(), calleeSaveRegisters); allocatable = initAllocatable(config.useCompressedOops); attributesMap = RegisterAttributes.createMap(this, SPARC.allRegisters); } @Override public Register[] getCallerSaveRegisters() { return callerSaveRegisters; } @Override public Register getRegisterForRole(int index) { throw new UnsupportedOperationException(); } @Override public CallingConvention getCallingConvention(Type type, JavaType returnType, JavaType[] parameterTypes, TargetDescription target, boolean stackOnly) { if (type == Type.JavaCall || type == Type.NativeCall) { return callingConvention(cpuCallerParameterRegisters, returnType, parameterTypes, type, target, stackOnly); } if (type == Type.JavaCallee) { return callingConvention(cpuCalleeParameterRegisters, returnType, parameterTypes, type, target, stackOnly); } throw GraalInternalError.shouldNotReachHere(); } public Register[] getCallingConventionRegisters(Type type, Kind kind) { if (architecture.canStoreValue(FPU, kind)) { return fpuParameterRegisters; } assert architecture.canStoreValue(CPU, kind); return type == Type.JavaCallee ? cpuCalleeParameterRegisters : cpuCallerParameterRegisters; } private CallingConvention callingConvention(Register[] generalParameterRegisters, JavaType returnType, JavaType[] parameterTypes, Type type, TargetDescription target, boolean stackOnly) { AllocatableValue[] locations = new AllocatableValue[parameterTypes.length]; int currentGeneral = 0; int currentFloating = 0; int currentStackOffset = 0; for (int i = 0; i < parameterTypes.length; i++) { final Kind kind = parameterTypes[i].getKind(); switch (kind) { case Byte: case Boolean: case Short: case Char: case Int: case Long: case Object: if (!stackOnly && currentGeneral < generalParameterRegisters.length) { Register register = generalParameterRegisters[currentGeneral++]; locations[i] = register.asValue(kind); } break; case Float: case Double: if (!stackOnly && currentFloating < fpuParameterRegisters.length) { Register register = fpuParameterRegisters[currentFloating++]; locations[i] = register.asValue(kind); } break; default: throw GraalInternalError.shouldNotReachHere(); } if (locations[i] == null) { locations[i] = StackSlot.get(kind.getStackKind(), currentStackOffset, !type.out); currentStackOffset += Math.max(target.arch.getSizeInBytes(kind), target.wordSize); } } Kind returnKind = returnType == null ? Kind.Void : returnType.getKind(); AllocatableValue returnLocation = returnKind == Kind.Void ? Value.ILLEGAL : getReturnRegister(returnKind, type).asValue(returnKind); return new CallingConvention(currentStackOffset, returnLocation, locations); } @Override public Register getReturnRegister(Kind kind) { return getReturnRegister(kind, Type.JavaCallee); } private static Register getReturnRegister(Kind kind, Type type) { switch (kind) { case Boolean: case Byte: case Char: case Short: case Int: case Long: case Object: return type == Type.JavaCallee ? i0 : o0; case Float: case Double: return f0; case Void: case Illegal: return null; default: throw new UnsupportedOperationException("no return register for type " + kind); } } @Override public Register getFrameRegister() { return sp; } public CalleeSaveLayout getCalleeSaveLayout() { return csl; } @Override public String toString() { return String.format("Allocatable: " + Arrays.toString(getAllocatableRegisters()) + "%n" + "CallerSave: " + Arrays.toString(getCallerSaveRegisters()) + "%n"); } }