Mercurial > hg > graal-jvmci-8
view jvmci/jdk.vm.ci.hotspot.sparc/src/jdk/vm/ci/hotspot/sparc/SPARCHotSpotRegisterConfig.java @ 22672:1bbd4a7c274b
Rename jdk.internal.jvmci to jdk.vm.ci
author | Tom Rodriguez <tom.rodriguez@oracle.com> |
---|---|
date | Thu, 08 Oct 2015 17:28:41 -0700 |
parents | jvmci/jdk.internal.jvmci.hotspot.sparc/src/jdk/internal/jvmci/hotspot/sparc/SPARCHotSpotRegisterConfig.java@a215c16882e0 |
children | 4688478ecb7b |
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/* * Copyright (c) 2013, 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 jdk.vm.ci.hotspot.sparc; import static jdk.vm.ci.sparc.SPARC.FPUd; import static jdk.vm.ci.sparc.SPARC.FPUs; import static jdk.vm.ci.sparc.SPARC.d0; import static jdk.vm.ci.sparc.SPARC.d2; import static jdk.vm.ci.sparc.SPARC.d32; import static jdk.vm.ci.sparc.SPARC.d34; import static jdk.vm.ci.sparc.SPARC.d36; import static jdk.vm.ci.sparc.SPARC.d38; import static jdk.vm.ci.sparc.SPARC.d4; import static jdk.vm.ci.sparc.SPARC.d40; import static jdk.vm.ci.sparc.SPARC.d42; import static jdk.vm.ci.sparc.SPARC.d44; import static jdk.vm.ci.sparc.SPARC.d46; import static jdk.vm.ci.sparc.SPARC.d48; import static jdk.vm.ci.sparc.SPARC.d50; import static jdk.vm.ci.sparc.SPARC.d52; import static jdk.vm.ci.sparc.SPARC.d54; import static jdk.vm.ci.sparc.SPARC.d56; import static jdk.vm.ci.sparc.SPARC.d58; import static jdk.vm.ci.sparc.SPARC.d6; import static jdk.vm.ci.sparc.SPARC.d60; import static jdk.vm.ci.sparc.SPARC.d62; import static jdk.vm.ci.sparc.SPARC.f0; import static jdk.vm.ci.sparc.SPARC.f1; import static jdk.vm.ci.sparc.SPARC.f10; import static jdk.vm.ci.sparc.SPARC.f11; import static jdk.vm.ci.sparc.SPARC.f12; import static jdk.vm.ci.sparc.SPARC.f13; import static jdk.vm.ci.sparc.SPARC.f14; import static jdk.vm.ci.sparc.SPARC.f15; import static jdk.vm.ci.sparc.SPARC.f16; import static jdk.vm.ci.sparc.SPARC.f17; import static jdk.vm.ci.sparc.SPARC.f18; import static jdk.vm.ci.sparc.SPARC.f19; import static jdk.vm.ci.sparc.SPARC.f2; import static jdk.vm.ci.sparc.SPARC.f20; import static jdk.vm.ci.sparc.SPARC.f21; import static jdk.vm.ci.sparc.SPARC.f22; import static jdk.vm.ci.sparc.SPARC.f23; import static jdk.vm.ci.sparc.SPARC.f24; import static jdk.vm.ci.sparc.SPARC.f25; import static jdk.vm.ci.sparc.SPARC.f26; import static jdk.vm.ci.sparc.SPARC.f27; import static jdk.vm.ci.sparc.SPARC.f28; import static jdk.vm.ci.sparc.SPARC.f29; import static jdk.vm.ci.sparc.SPARC.f3; import static jdk.vm.ci.sparc.SPARC.f30; 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.f8; import static jdk.vm.ci.sparc.SPARC.f9; import static jdk.vm.ci.sparc.SPARC.g1; import static jdk.vm.ci.sparc.SPARC.g2; import static jdk.vm.ci.sparc.SPARC.g3; import static jdk.vm.ci.sparc.SPARC.g4; import static jdk.vm.ci.sparc.SPARC.g5; import static jdk.vm.ci.sparc.SPARC.g6; import static jdk.vm.ci.sparc.SPARC.g7; 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.o7; import static jdk.vm.ci.sparc.SPARC.sp; import java.util.ArrayList; import java.util.Arrays; 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.RegisterAttributes; import jdk.vm.ci.code.RegisterConfig; import jdk.vm.ci.code.StackSlot; import jdk.vm.ci.code.TargetDescription; import jdk.vm.ci.common.JVMCIError; import jdk.vm.ci.hotspot.HotSpotVMConfig; import jdk.vm.ci.meta.AllocatableValue; import jdk.vm.ci.meta.JavaKind; import jdk.vm.ci.meta.JavaType; import jdk.vm.ci.meta.LIRKind; import jdk.vm.ci.meta.PlatformKind; import jdk.vm.ci.meta.Value; import jdk.vm.ci.sparc.SPARC; import jdk.vm.ci.sparc.SPARCKind; public class SPARCHotSpotRegisterConfig implements RegisterConfig { private final Architecture architecture; private final Register[] allocatable; private final RegisterAttributes[] attributesMap; @Override public Register[] getAllocatableRegisters() { return allocatable.clone(); } public Register[] filterAllocatableRegisters(PlatformKind kind, Register[] registers) { ArrayList<Register> list = new ArrayList<>(); for (Register reg : registers) { if (architecture.canStoreValue(reg.getRegisterCategory(), kind)) { // Special treatment for double precision // TODO: This is wasteful it uses only half of the registers as float. if (kind == SPARCKind.DOUBLE) { if (reg.getRegisterCategory().equals(FPUd)) { list.add(reg); } } else if (kind == SPARCKind.SINGLE) { if (reg.getRegisterCategory().equals(FPUs)) { list.add(reg); } } else { list.add(reg); } } } Register[] ret = list.toArray(new Register[list.size()]); 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[] fpuDoubleParameterRegisters = {d0, null, d2, null, d4, null, d6, null}; // @formatter:off private final Register[] callerSaveRegisters = {g1, g2, g3, g4, g5, g6, g7, o0, o1, o2, o3, o4, o5, o7, f0, f1, f2, f3, f4, f5, f6, f7, f8, f9, f10, f11, f12, f13, f14, f15, f16, f17, f18, f19, f20, f21, f22, f23, f24, f25, f26, f27, f28, f29, f30, f31, d32, d34, d36, d38, d40, d42, d44, d46, d48, d50, d52, d54, d56, d58, d60, d62}; // @formatter:on /** * Registers saved by the callee. This lists all L and I registers which are saved in the * register window. */ private final Register[] calleeSaveRegisters = {l0, l1, l2, l3, l4, l5, l6, l7, i0, i1, i2, i3, i4, i5, i6, i7}; private static Register[] initAllocatable(boolean reserveForHeapBase) { Register[] registers = null; if (reserveForHeapBase) { // @formatter:off registers = new Register[]{ // TODO this is not complete // o7 cannot be used as register because it is always overwritten on call // and the current register handler would ignore this fact if the called // method still does not modify registers, in fact o7 is modified by the Call instruction // There would be some extra handlin necessary to be able to handle the o7 properly for local usage g1, g4, g5, 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, f8, f9, f10, f11, f12, f13, f14, f15, f16, f17, f18, f19, f20, f21, f22, f23, f24, f25, f26, f27, f28, f29, f30, f31, d32, d34, d36, d38, d40, d42, d44, d46, d48, d50, d52, d54, d56, d58, d60, d62 }; // @formatter:on } else { // @formatter:off registers = new Register[]{ // TODO this is not complete g1, g4, g5, 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 f8, f9, f10, f11, f12, f13, f14, f15, f16, f17, f18, f19, f20, f21, f22, f23, f24, f25, f26, f27, f28, f29, f30, f31, d32, d34, d36, d38, d40, d42, d44, d46, d48, d50, d52, d54, d56, d58, d60, d62 }; // @formatter:on } return registers; } public SPARCHotSpotRegisterConfig(TargetDescription target, HotSpotVMConfig config) { this(target, initAllocatable(config.useCompressedOops)); } public SPARCHotSpotRegisterConfig(TargetDescription target, Register[] allocatable) { this.architecture = target.arch; this.allocatable = allocatable.clone(); attributesMap = RegisterAttributes.createMap(this, SPARC.allRegisters); } @Override public Register[] getCallerSaveRegisters() { return callerSaveRegisters; } public Register[] getCalleeSaveRegisters() { return calleeSaveRegisters; } @Override public boolean areAllAllocatableRegistersCallerSaved() { return false; } @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 JVMCIError.shouldNotReachHere(); } public Register[] getCallingConventionRegisters(Type type, JavaKind kind) { switch (kind) { case Boolean: case Byte: case Short: case Char: case Int: case Long: case Object: return type == Type.JavaCallee ? cpuCalleeParameterRegisters : cpuCallerParameterRegisters; case Double: case Float: return fpuParameterRegisters; default: throw JVMCIError.shouldNotReachHere("Unknown JavaKind " + kind); } } 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 JavaKind kind = parameterTypes[i].getJavaKind().getStackKind(); 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(target.getLIRKind(kind)); } break; case Double: if (!stackOnly && currentFloating < fpuParameterRegisters.length) { if (currentFloating % 2 != 0) { // Make register number even to be a double reg currentFloating++; } Register register = fpuDoubleParameterRegisters[currentFloating]; currentFloating += 2; // Only every second is a double register locations[i] = register.asValue(target.getLIRKind(kind)); } break; case Float: if (!stackOnly && currentFloating < fpuParameterRegisters.length) { Register register = fpuParameterRegisters[currentFloating++]; locations[i] = register.asValue(target.getLIRKind(kind)); } break; default: throw JVMCIError.shouldNotReachHere(); } if (locations[i] == null) { LIRKind lirKind = target.getLIRKind(kind); // Stack slot is always aligned to its size in bytes but minimum wordsize int typeSize = lirKind.getPlatformKind().getSizeInBytes(); currentStackOffset = roundUp(currentStackOffset, typeSize); int slotOffset = currentStackOffset + SPARC.REGISTER_SAFE_AREA_SIZE; locations[i] = StackSlot.get(lirKind, slotOffset, !type.out); currentStackOffset += typeSize; } } JavaKind returnKind = returnType == null ? JavaKind.Void : returnType.getJavaKind(); AllocatableValue returnLocation = returnKind == JavaKind.Void ? Value.ILLEGAL : getReturnRegister(returnKind, type).asValue(target.getLIRKind(returnKind.getStackKind())); // Space where callee may spill outgoing parameters o0...o5 int lowerOutgoingSpace = Math.min(locations.length, 6) * target.wordSize; return new CallingConvention(currentStackOffset + lowerOutgoingSpace, 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, Type.JavaCallee); } private static Register getReturnRegister(JavaKind 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: 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: " + Arrays.toString(getAllocatableRegisters()) + "%n" + "CallerSave: " + Arrays.toString(getCallerSaveRegisters()) + "%n"); } }