| /* |
| * Copyright (c) 2013, 2016, 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 jdk.vm.ci.hotspot.sparc; |
| |
| import static jdk.vm.ci.meta.JavaKind.Void; |
| import static jdk.vm.ci.meta.Value.ILLEGAL; |
| import static jdk.vm.ci.sparc.SPARC.REGISTER_SAFE_AREA_SIZE; |
| import static jdk.vm.ci.sparc.SPARC.d0; |
| import static jdk.vm.ci.sparc.SPARC.d10; |
| import static jdk.vm.ci.sparc.SPARC.d12; |
| import static jdk.vm.ci.sparc.SPARC.d14; |
| import static jdk.vm.ci.sparc.SPARC.d16; |
| import static jdk.vm.ci.sparc.SPARC.d18; |
| import static jdk.vm.ci.sparc.SPARC.d2; |
| import static jdk.vm.ci.sparc.SPARC.d20; |
| import static jdk.vm.ci.sparc.SPARC.d22; |
| import static jdk.vm.ci.sparc.SPARC.d24; |
| import static jdk.vm.ci.sparc.SPARC.d26; |
| import static jdk.vm.ci.sparc.SPARC.d28; |
| import static jdk.vm.ci.sparc.SPARC.d30; |
| import static jdk.vm.ci.sparc.SPARC.d4; |
| import static jdk.vm.ci.sparc.SPARC.d6; |
| import static jdk.vm.ci.sparc.SPARC.d8; |
| import static jdk.vm.ci.sparc.SPARC.f0; |
| import static jdk.vm.ci.sparc.SPARC.f1; |
| import static jdk.vm.ci.sparc.SPARC.f11; |
| import static jdk.vm.ci.sparc.SPARC.f13; |
| import static jdk.vm.ci.sparc.SPARC.f15; |
| import static jdk.vm.ci.sparc.SPARC.f17; |
| import static jdk.vm.ci.sparc.SPARC.f19; |
| import static jdk.vm.ci.sparc.SPARC.f2; |
| import static jdk.vm.ci.sparc.SPARC.f21; |
| import static jdk.vm.ci.sparc.SPARC.f23; |
| import static jdk.vm.ci.sparc.SPARC.f25; |
| import static jdk.vm.ci.sparc.SPARC.f27; |
| import static jdk.vm.ci.sparc.SPARC.f29; |
| import static jdk.vm.ci.sparc.SPARC.f3; |
| import static jdk.vm.ci.sparc.SPARC.f31; |
| import static jdk.vm.ci.sparc.SPARC.f4; |
| import static jdk.vm.ci.sparc.SPARC.f5; |
| import static jdk.vm.ci.sparc.SPARC.f6; |
| import static jdk.vm.ci.sparc.SPARC.f7; |
| import static jdk.vm.ci.sparc.SPARC.f9; |
| import static jdk.vm.ci.sparc.SPARC.g0; |
| import static jdk.vm.ci.sparc.SPARC.g2; |
| import static jdk.vm.ci.sparc.SPARC.g6; |
| import static jdk.vm.ci.sparc.SPARC.i0; |
| import static jdk.vm.ci.sparc.SPARC.i1; |
| import static jdk.vm.ci.sparc.SPARC.i2; |
| import static jdk.vm.ci.sparc.SPARC.i3; |
| import static jdk.vm.ci.sparc.SPARC.i4; |
| import static jdk.vm.ci.sparc.SPARC.i5; |
| import static jdk.vm.ci.sparc.SPARC.i6; |
| import static jdk.vm.ci.sparc.SPARC.i7; |
| import static jdk.vm.ci.sparc.SPARC.l0; |
| import static jdk.vm.ci.sparc.SPARC.l1; |
| import static jdk.vm.ci.sparc.SPARC.l2; |
| import static jdk.vm.ci.sparc.SPARC.l3; |
| import static jdk.vm.ci.sparc.SPARC.l4; |
| import static jdk.vm.ci.sparc.SPARC.l5; |
| import static jdk.vm.ci.sparc.SPARC.l6; |
| import static jdk.vm.ci.sparc.SPARC.l7; |
| import static jdk.vm.ci.sparc.SPARC.o0; |
| import static jdk.vm.ci.sparc.SPARC.o1; |
| import static jdk.vm.ci.sparc.SPARC.o2; |
| import static jdk.vm.ci.sparc.SPARC.o3; |
| import static jdk.vm.ci.sparc.SPARC.o4; |
| import static jdk.vm.ci.sparc.SPARC.o5; |
| import static jdk.vm.ci.sparc.SPARC.sp; |
| |
| import java.util.ArrayList; |
| import java.util.HashSet; |
| import java.util.List; |
| |
| import jdk.vm.ci.code.Architecture; |
| import jdk.vm.ci.code.CallingConvention; |
| import jdk.vm.ci.code.CallingConvention.Type; |
| import jdk.vm.ci.code.Register; |
| import jdk.vm.ci.code.RegisterArray; |
| import jdk.vm.ci.code.RegisterAttributes; |
| import jdk.vm.ci.code.RegisterConfig; |
| import jdk.vm.ci.code.StackSlot; |
| import jdk.vm.ci.code.TargetDescription; |
| import jdk.vm.ci.code.ValueKindFactory; |
| import jdk.vm.ci.common.JVMCIError; |
| import jdk.vm.ci.hotspot.HotSpotCallingConventionType; |
| import jdk.vm.ci.meta.AllocatableValue; |
| import jdk.vm.ci.meta.JavaKind; |
| import jdk.vm.ci.meta.JavaType; |
| import jdk.vm.ci.meta.PlatformKind; |
| import jdk.vm.ci.meta.ValueKind; |
| import jdk.vm.ci.sparc.SPARC; |
| |
| public class SPARCHotSpotRegisterConfig implements RegisterConfig { |
| |
| private final TargetDescription target; |
| |
| private final RegisterArray allocatable; |
| |
| private final RegisterAttributes[] attributesMap; |
| |
| @Override |
| public RegisterArray getAllocatableRegisters() { |
| return allocatable; |
| } |
| |
| @Override |
| public RegisterArray filterAllocatableRegisters(PlatformKind kind, RegisterArray registers) { |
| ArrayList<Register> list = new ArrayList<>(); |
| for (Register reg : registers) { |
| if (target.arch.canStoreValue(reg.getRegisterCategory(), kind)) { |
| list.add(reg); |
| } |
| } |
| return new RegisterArray(list); |
| } |
| |
| @Override |
| public RegisterAttributes[] getAttributesMap() { |
| return attributesMap.clone(); |
| } |
| |
| private final RegisterArray cpuCallerParameterRegisters = new RegisterArray(o0, o1, o2, o3, o4, o5); |
| private final RegisterArray cpuCalleeParameterRegisters = new RegisterArray(i0, i1, i2, i3, i4, i5); |
| |
| private final RegisterArray fpuFloatJavaParameterRegisters = new RegisterArray(f0, f1, f2, f3, f4, f5, f6, f7); |
| private final RegisterArray fpuDoubleJavaParameterRegisters = new RegisterArray(d0, null, d2, null, d4, null, d6, null); |
| |
| // @formatter:off |
| private final RegisterArray fpuFloatNativeParameterRegisters = new RegisterArray( |
| f1, f3, f5, f7, f9, f11, f13, f15, |
| f17, f19, f21, f23, f25, f27, f29, f31); |
| |
| private final RegisterArray fpuDoubleNativeParameterRegisters = new RegisterArray( |
| d0, d2, d4, d6, d8, d10, d12, d14, |
| d16, d18, d20, d22, d24, d26, d28, d30); |
| |
| private final RegisterArray callerSaveRegisters; |
| |
| /** |
| * This lists all L and I registers which are saved in the register window. |
| */ |
| private final RegisterArray windowSaveRegisters = new RegisterArray( |
| l0, l1, l2, l3, l4, l5, l6, l7, |
| i0, i1, i2, i3, i4, i5, i6, i7); |
| // @formatter:on |
| |
| private static final RegisterArray reservedRegisters = new RegisterArray(sp, g0, g2); |
| |
| private static RegisterArray initAllocatable(Architecture arch, boolean reserveForHeapBase) { |
| RegisterArray allRegisters = arch.getAvailableValueRegisters(); |
| Register[] registers = new Register[allRegisters.size() - reservedRegisters.size() - (reserveForHeapBase ? 1 : 0)]; |
| List<Register> reservedRegistersList = reservedRegisters.asList(); |
| |
| int idx = 0; |
| for (Register reg : allRegisters) { |
| if (reservedRegistersList.contains(reg)) { |
| // skip reserved registers |
| continue; |
| } |
| if (reserveForHeapBase && reg.equals(g6)) { |
| // skip heap base register |
| continue; |
| } |
| |
| registers[idx++] = reg; |
| } |
| |
| assert idx == registers.length; |
| return new RegisterArray(registers); |
| } |
| |
| public SPARCHotSpotRegisterConfig(TargetDescription target, boolean useCompressedOops) { |
| this(target, initAllocatable(target.arch, useCompressedOops)); |
| } |
| |
| public SPARCHotSpotRegisterConfig(TargetDescription target, RegisterArray allocatable) { |
| this.target = target; |
| this.allocatable = allocatable; |
| HashSet<Register> callerSaveSet = new HashSet<>(target.arch.getAvailableValueRegisters().asList()); |
| for (Register cs : windowSaveRegisters) { |
| callerSaveSet.remove(cs); |
| } |
| this.callerSaveRegisters = new RegisterArray(callerSaveSet); |
| attributesMap = RegisterAttributes.createMap(this, SPARC.allRegisters); |
| } |
| |
| @Override |
| public RegisterArray getCallerSaveRegisters() { |
| return callerSaveRegisters; |
| } |
| |
| @Override |
| public RegisterArray getCalleeSaveRegisters() { |
| return null; |
| } |
| |
| @Override |
| public boolean areAllAllocatableRegistersCallerSaved() { |
| return false; |
| } |
| |
| @Override |
| public CallingConvention getCallingConvention(Type type, JavaType returnType, JavaType[] parameterTypes, ValueKindFactory<?> valueKindFactory) { |
| HotSpotCallingConventionType hotspotType = (HotSpotCallingConventionType) type; |
| if (type == HotSpotCallingConventionType.JavaCall || type == HotSpotCallingConventionType.NativeCall) { |
| return callingConvention(cpuCallerParameterRegisters, returnType, parameterTypes, hotspotType, valueKindFactory); |
| } |
| if (type == HotSpotCallingConventionType.JavaCallee) { |
| return callingConvention(cpuCalleeParameterRegisters, returnType, parameterTypes, hotspotType, valueKindFactory); |
| } |
| throw JVMCIError.shouldNotReachHere(); |
| } |
| |
| @Override |
| public RegisterArray getCallingConventionRegisters(Type type, JavaKind kind) { |
| HotSpotCallingConventionType hotspotType = (HotSpotCallingConventionType) type; |
| switch (kind) { |
| case Boolean: |
| case Byte: |
| case Short: |
| case Char: |
| case Int: |
| case Long: |
| case Object: |
| return hotspotType == HotSpotCallingConventionType.JavaCallee ? cpuCalleeParameterRegisters : cpuCallerParameterRegisters; |
| case Double: |
| case Float: |
| return fpuFloatJavaParameterRegisters; |
| default: |
| throw JVMCIError.shouldNotReachHere("Unknown JavaKind " + kind); |
| } |
| } |
| |
| private CallingConvention callingConvention(RegisterArray generalParameterRegisters, JavaType returnType, JavaType[] parameterTypes, HotSpotCallingConventionType type, |
| ValueKindFactory<?> valueKindFactory) { |
| AllocatableValue[] locations = new AllocatableValue[parameterTypes.length]; |
| |
| int currentGeneral = 0; |
| int currentFloating = 0; |
| int currentStackOffset = 0; |
| boolean isNative = type == HotSpotCallingConventionType.NativeCall; |
| |
| for (int i = 0; i < parameterTypes.length; i++) { |
| final JavaKind kind = parameterTypes[i].getJavaKind().getStackKind(); |
| if (isNative) { |
| RegisterArray registerSet; |
| switch (kind) { |
| case Byte: |
| case Boolean: |
| case Short: |
| case Char: |
| case Int: |
| case Long: |
| case Object: |
| registerSet = generalParameterRegisters; |
| break; |
| case Double: |
| registerSet = fpuDoubleNativeParameterRegisters; |
| break; |
| case Float: |
| registerSet = fpuFloatNativeParameterRegisters; |
| break; |
| default: |
| throw JVMCIError.shouldNotReachHere(); |
| } |
| if (i < registerSet.size()) { |
| locations[i] = registerSet.get(i).asValue(valueKindFactory.getValueKind(kind)); |
| currentStackOffset += target.arch.getWordSize(); |
| } |
| } else { |
| switch (kind) { |
| case Byte: |
| case Boolean: |
| case Short: |
| case Char: |
| case Int: |
| case Long: |
| case Object: |
| if (currentGeneral < generalParameterRegisters.size()) { |
| Register register = generalParameterRegisters.get(currentGeneral++); |
| locations[i] = register.asValue(valueKindFactory.getValueKind(kind)); |
| } |
| break; |
| case Double: |
| if (currentFloating < fpuFloatJavaParameterRegisters.size()) { |
| if (currentFloating % 2 != 0) { |
| // Make register number even to be a double reg |
| currentFloating++; |
| } |
| Register register = fpuDoubleJavaParameterRegisters.get(currentFloating); |
| currentFloating += 2; // Only every second is a double register |
| locations[i] = register.asValue(valueKindFactory.getValueKind(kind)); |
| } |
| break; |
| case Float: |
| if (currentFloating < fpuFloatJavaParameterRegisters.size()) { |
| Register register = fpuFloatJavaParameterRegisters.get(currentFloating++); |
| locations[i] = register.asValue(valueKindFactory.getValueKind(kind)); |
| } |
| break; |
| default: |
| throw JVMCIError.shouldNotReachHere(); |
| } |
| } |
| |
| if (locations[i] == null) { |
| ValueKind<?> valueKind = valueKindFactory.getValueKind(kind); |
| int typeSize = valueKind.getPlatformKind().getSizeInBytes(); |
| if (isNative) { |
| currentStackOffset += target.arch.getWordSize() - typeSize; |
| } |
| currentStackOffset = roundUp(currentStackOffset, typeSize); |
| int slotOffset = currentStackOffset + REGISTER_SAFE_AREA_SIZE; |
| locations[i] = StackSlot.get(valueKind, slotOffset, !type.out); |
| currentStackOffset += typeSize; |
| } |
| } |
| |
| JavaKind returnKind = returnType == null ? Void : returnType.getJavaKind(); |
| AllocatableValue returnLocation = returnKind == Void ? ILLEGAL : getReturnRegister(returnKind, type).asValue(valueKindFactory.getValueKind(returnKind.getStackKind())); |
| return new CallingConvention(currentStackOffset, returnLocation, locations); |
| } |
| |
| private static int roundUp(int number, int mod) { |
| return ((number + mod - 1) / mod) * mod; |
| } |
| |
| @Override |
| public Register getReturnRegister(JavaKind kind) { |
| return getReturnRegister(kind, HotSpotCallingConventionType.JavaCallee); |
| } |
| |
| private static Register getReturnRegister(JavaKind kind, HotSpotCallingConventionType type) { |
| switch (kind) { |
| case Boolean: |
| case Byte: |
| case Char: |
| case Short: |
| case Int: |
| case Long: |
| case Object: |
| return type == HotSpotCallingConventionType.JavaCallee ? i0 : o0; |
| case Float: |
| return f0; |
| case Double: |
| return d0; |
| case Void: |
| case Illegal: |
| return null; |
| default: |
| throw new UnsupportedOperationException("no return register for type " + kind); |
| } |
| } |
| |
| @Override |
| public Register getFrameRegister() { |
| return sp; |
| } |
| |
| @Override |
| public String toString() { |
| return String.format("Allocatable: " + getAllocatableRegisters() + "%n" + "CallerSave: " + getCallerSaveRegisters() + "%n"); |
| } |
| } |
