Mercurial > hg > truffle
diff graal/com.oracle.jvmci.hotspot.amd64/src/com/oracle/jvmci/hotspot/amd64/AMD64HotSpotRegisterConfig.java @ 21687:afea1d08c393
Merge with df4579cb9503128c646bd04e66646ccfa7faf25f
author | Michael Van De Vanter <michael.van.de.vanter@oracle.com> |
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date | Tue, 02 Jun 2015 18:32:11 -0700 |
parents | e0b5d4fcd929 |
children |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/graal/com.oracle.jvmci.hotspot.amd64/src/com/oracle/jvmci/hotspot/amd64/AMD64HotSpotRegisterConfig.java Tue Jun 02 18:32:11 2015 -0700 @@ -0,0 +1,268 @@ +/* + * 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.jvmci.hotspot.amd64; + +import com.oracle.jvmci.amd64.*; +import com.oracle.jvmci.code.Register; +import com.oracle.jvmci.code.RegisterConfig; +import com.oracle.jvmci.code.TargetDescription; +import com.oracle.jvmci.code.CallingConvention; +import com.oracle.jvmci.code.StackSlot; +import com.oracle.jvmci.code.RegisterAttributes; +import com.oracle.jvmci.code.CalleeSaveLayout; +import com.oracle.jvmci.code.Architecture; +import com.oracle.jvmci.meta.JavaType; +import com.oracle.jvmci.meta.Value; +import com.oracle.jvmci.meta.PlatformKind; +import com.oracle.jvmci.meta.AllocatableValue; +import com.oracle.jvmci.meta.Kind; + +import static com.oracle.jvmci.amd64.AMD64.*; + +import java.util.*; + +import com.oracle.jvmci.code.CallingConvention.Type; +import com.oracle.jvmci.common.*; +import com.oracle.jvmci.hotspot.*; + +public class AMD64HotSpotRegisterConfig implements RegisterConfig { + + private final Architecture architecture; + + private final Register[] allocatable; + + private final int maxFrameSize; + + /** + * The caller saved registers always include all parameter registers. + */ + private final Register[] callerSaved; + + private final boolean allAllocatableAreCallerSaved; + + private final RegisterAttributes[] attributesMap; + + public int getMaximumFrameSize() { + return maxFrameSize; + } + + @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)) { + list.add(reg); + } + } + + Register[] ret = list.toArray(new Register[list.size()]); + return ret; + } + + @Override + public RegisterAttributes[] getAttributesMap() { + return attributesMap.clone(); + } + + private final Register[] javaGeneralParameterRegisters; + private final Register[] nativeGeneralParameterRegisters; + private final Register[] xmmParameterRegisters = {xmm0, xmm1, xmm2, xmm3, xmm4, xmm5, xmm6, xmm7}; + + /* + * Some ABIs (e.g. Windows) require a so-called "home space", that is a save area on the stack + * to store the argument registers + */ + private final boolean needsNativeStackHomeSpace; + + private final CalleeSaveLayout csl; + + private static Register[] initAllocatable(boolean reserveForHeapBase) { + Register[] registers = null; + // @formatter:off + if (reserveForHeapBase) { + registers = new Register[] { + rax, rbx, rcx, rdx, /*rsp,*/ rbp, rsi, rdi, r8, r9, r10, r11, /*r12,*/ r13, r14, /*r15, */ + xmm0, xmm1, xmm2, xmm3, xmm4, xmm5, xmm6, xmm7, + xmm8, xmm9, xmm10, xmm11, xmm12, xmm13, xmm14, xmm15 + }; + } else { + registers = new Register[] { + rax, rbx, rcx, rdx, /*rsp,*/ rbp, rsi, rdi, r8, r9, r10, r11, r12, r13, r14, /*r15, */ + xmm0, xmm1, xmm2, xmm3, xmm4, xmm5, xmm6, xmm7, + xmm8, xmm9, xmm10, xmm11, xmm12, xmm13, xmm14, xmm15 + }; + } + // @formatter:on + return registers; + } + + public AMD64HotSpotRegisterConfig(Architecture architecture, HotSpotVMConfig config) { + this(architecture, config, initAllocatable(config.useCompressedOops)); + assert callerSaved.length >= allocatable.length; + } + + public AMD64HotSpotRegisterConfig(Architecture architecture, HotSpotVMConfig config, Register[] allocatable) { + this.architecture = architecture; + this.maxFrameSize = config.maxFrameSize; + + if (config.windowsOs) { + javaGeneralParameterRegisters = new Register[]{rdx, r8, r9, rdi, rsi, rcx}; + nativeGeneralParameterRegisters = new Register[]{rcx, rdx, r8, r9}; + this.needsNativeStackHomeSpace = true; + } else { + javaGeneralParameterRegisters = new Register[]{rsi, rdx, rcx, r8, r9, rdi}; + nativeGeneralParameterRegisters = new Register[]{rdi, rsi, rdx, rcx, r8, r9}; + this.needsNativeStackHomeSpace = false; + } + + csl = null; + this.allocatable = allocatable.clone(); + Set<Register> callerSaveSet = new HashSet<>(); + Collections.addAll(callerSaveSet, allocatable); + Collections.addAll(callerSaveSet, xmmParameterRegisters); + Collections.addAll(callerSaveSet, javaGeneralParameterRegisters); + Collections.addAll(callerSaveSet, nativeGeneralParameterRegisters); + callerSaved = callerSaveSet.toArray(new Register[callerSaveSet.size()]); + + allAllocatableAreCallerSaved = true; + attributesMap = RegisterAttributes.createMap(this, AMD64.allRegisters); + } + + @Override + public Register[] getCallerSaveRegisters() { + return callerSaved; + } + + @Override + public boolean areAllAllocatableRegistersCallerSaved() { + return allAllocatableAreCallerSaved; + } + + @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.NativeCall) { + return callingConvention(nativeGeneralParameterRegisters, returnType, parameterTypes, type, target, stackOnly); + } + // On x64, parameter locations are the same whether viewed + // from the caller or callee perspective + return callingConvention(javaGeneralParameterRegisters, returnType, parameterTypes, type, target, stackOnly); + } + + public Register[] getCallingConventionRegisters(Type type, Kind kind) { + if (architecture.canStoreValue(XMM, kind)) { + return xmmParameterRegisters; + } + assert architecture.canStoreValue(CPU, kind); + return type == Type.NativeCall ? nativeGeneralParameterRegisters : javaGeneralParameterRegisters; + } + + 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 currentXMM = 0; + int currentStackOffset = type == Type.NativeCall && needsNativeStackHomeSpace ? generalParameterRegisters.length * target.wordSize : 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(target.getLIRKind(kind)); + } + break; + case Float: + case Double: + if (!stackOnly && currentXMM < xmmParameterRegisters.length) { + Register register = xmmParameterRegisters[currentXMM++]; + locations[i] = register.asValue(target.getLIRKind(kind)); + } + break; + default: + throw JVMCIError.shouldNotReachHere(); + } + + if (locations[i] == null) { + locations[i] = StackSlot.get(target.getLIRKind(kind.getStackKind()), currentStackOffset, !type.out); + currentStackOffset += Math.max(target.getSizeInBytes(kind), target.wordSize); + } + } + + Kind returnKind = returnType == null ? Kind.Void : returnType.getKind(); + AllocatableValue returnLocation = returnKind == Kind.Void ? Value.ILLEGAL : getReturnRegister(returnKind).asValue(target.getLIRKind(returnKind.getStackKind())); + return new CallingConvention(currentStackOffset, returnLocation, locations); + } + + @Override + public Register getReturnRegister(Kind kind) { + switch (kind) { + case Boolean: + case Byte: + case Char: + case Short: + case Int: + case Long: + case Object: + return rax; + case Float: + case Double: + return xmm0; + case Void: + case Illegal: + return null; + default: + throw new UnsupportedOperationException("no return register for type " + kind); + } + } + + @Override + public Register getFrameRegister() { + return rsp; + } + + public CalleeSaveLayout getCalleeSaveLayout() { + return csl; + } + + @Override + public String toString() { + return String.format("Allocatable: " + Arrays.toString(getAllocatableRegisters()) + "%n" + "CallerSave: " + Arrays.toString(getCallerSaveRegisters()) + "%n"); + } +}