Mercurial > hg > truffle
view graal/com.oracle.graal.hotspot.ptx/src/com/oracle/graal/hotspot/ptx/PTXHotSpotRegisterConfig.java @ 14614:abf7cf57df5e
added RegisterConfig.areAllAllocatableRegistersCallerSaved()
author | Doug Simon <doug.simon@oracle.com> |
---|---|
date | Wed, 19 Mar 2014 12:42:43 +0100 |
parents | 883fbd3e06e0 |
children | 64dcb92ee75a |
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/* * Copyright (c) 2011, 2012, 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.ptx; import static com.oracle.graal.ptx.PTX.*; import java.util.*; import com.oracle.graal.api.code.*; import com.oracle.graal.api.code.CallingConvention.Type; import com.oracle.graal.api.meta.*; import com.oracle.graal.lir.Variable; import com.oracle.graal.graph.*; public class PTXHotSpotRegisterConfig implements RegisterConfig { private final Register[] allocatable; @Override public Register[] getAllocatableRegisters() { return allocatable.clone(); } @Override public Register[] getAllocatableRegisters(PlatformKind kind) { throw GraalInternalError.unimplemented("PTXHotSpotRegisterConfig.getAllocatableRegisters()"); } @Override public RegisterAttributes[] getAttributesMap() { throw GraalInternalError.unimplemented("PTXHotSpotRegisterConfig.getAttributesMap()"); } private final Register[] javaGeneralParameterRegisters; private final Register[] nativeGeneralParameterRegisters; private static Register[] initAllocatable() { Register[] registers = new Register[]{r0, r1, r2, r3, r4, r5, r6, r7, r8, r9, r10, r11, r12, r13, r14, r15}; return registers; } public PTXHotSpotRegisterConfig() { javaGeneralParameterRegisters = paramRegisters; nativeGeneralParameterRegisters = gprRegisters; allocatable = initAllocatable(); } @Override public Register[] getCallerSaveRegisters() { // No caller save registers; return empty array return new Register[]{}; } @Override public boolean areAllAllocatableRegistersCallerSaved() { throw GraalInternalError.unimplemented(); } @Override public Register getRegisterForRole(int index) { throw GraalInternalError.unimplemented("PTXHotSpotRegisterConfig.getRegisterForRole()"); } @Override public CallingConvention getCallingConvention(Type type, JavaType returnType, JavaType[] parameterTypes, TargetDescription target, boolean stackOnly) { if (type == Type.NativeCall) { return callingConvention(nativeGeneralParameterRegisters, returnType, parameterTypes, type, target, stackOnly); } return callingConvention(javaGeneralParameterRegisters, returnType, parameterTypes, type, target, stackOnly); } @Override public Register[] getCallingConventionRegisters(Type type, Kind kind) { throw GraalInternalError.unimplemented("PTXHotSpotRegisterConfig.getRegisterForRole()"); } private static CallingConvention callingConvention(@SuppressWarnings("unused") Register[] generalParameterRegisters, JavaType returnType, JavaType[] parameterTypes, Type type, TargetDescription target, boolean stackOnly) { assert stackOnly == false; int currentGeneral = 0; int currentStackOffset = 0; Kind returnKind = returnType == null ? Kind.Void : returnType.getKind(); AllocatableValue returnLocation; if (returnKind == Kind.Void) { returnLocation = Value.ILLEGAL; } else { returnLocation = new Variable(returnKind, currentGeneral++); } AllocatableValue[] locations = new AllocatableValue[parameterTypes.length]; 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 Float: case Double: case Object: if (!stackOnly) { locations[i] = new Variable(kind, currentGeneral++); } break; default: throw GraalInternalError.shouldNotReachHere(); } if (locations[i] == null) { locations[i] = StackSlot.get(kind.getStackKind(), currentStackOffset, !type.out); currentStackOffset += Math.max(target.getSizeInBytes(kind), target.wordSize); } } return new CallingConvention(currentStackOffset, returnLocation, locations); } @Override public Register getReturnRegister(Kind kind) { throw GraalInternalError.unimplemented("PTXHotSpotRegisterConfig.getRegisterForRole()"); } @Override public Register getFrameRegister() { // No frame register return null; } public CalleeSaveLayout getCalleeSaveLayout() { return null; } @Override public String toString() { return String.format("Allocatable: " + Arrays.toString(getAllocatableRegisters()) + "%n" + "CallerSave: " + Arrays.toString(getCallerSaveRegisters()) + "%n"); } }