| /* |
| * Copyright (c) 2015, 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.code.test; |
| |
| import java.nio.ByteBuffer; |
| import java.nio.ByteOrder; |
| import java.util.ArrayList; |
| import java.util.Arrays; |
| |
| import jdk.vm.ci.code.CodeCacheProvider; |
| import jdk.vm.ci.code.DebugInfo; |
| import jdk.vm.ci.code.Register; |
| import jdk.vm.ci.code.StackSlot; |
| import jdk.vm.ci.code.site.Call; |
| import jdk.vm.ci.code.site.ConstantReference; |
| import jdk.vm.ci.code.site.DataPatch; |
| import jdk.vm.ci.code.site.DataSectionReference; |
| import jdk.vm.ci.code.site.Infopoint; |
| import jdk.vm.ci.code.site.InfopointReason; |
| import jdk.vm.ci.code.site.Mark; |
| import jdk.vm.ci.code.site.Reference; |
| import jdk.vm.ci.code.site.Site; |
| import jdk.vm.ci.hotspot.HotSpotCompiledCode; |
| import jdk.vm.ci.hotspot.HotSpotCompiledCode.Comment; |
| import jdk.vm.ci.hotspot.HotSpotCompiledNmethod; |
| import jdk.vm.ci.hotspot.HotSpotConstant; |
| import jdk.vm.ci.hotspot.HotSpotResolvedJavaMethod; |
| import jdk.vm.ci.meta.Assumptions.Assumption; |
| import jdk.vm.ci.meta.InvokeTarget; |
| import jdk.vm.ci.meta.JavaKind; |
| import jdk.vm.ci.meta.PlatformKind; |
| import jdk.vm.ci.meta.ResolvedJavaMethod; |
| import jdk.vm.ci.meta.ValueKind; |
| import jdk.vm.ci.meta.VMConstant; |
| |
| /** |
| * Simple assembler used by the code installation tests. |
| */ |
| public abstract class TestAssembler { |
| |
| /** |
| * Emit the method prologue code (e.g. building the new stack frame). |
| */ |
| public abstract void emitPrologue(); |
| |
| /** |
| * Emit the method epilogue code (e.g. the deopt handler). |
| */ |
| public abstract void emitEpilogue(); |
| |
| /** |
| * Emit code to grow the stack frame. |
| * |
| * @param size the size in bytes that the stack should grow |
| */ |
| public abstract void emitGrowStack(int size); |
| |
| /** |
| * Get the register containing the first 32-bit integer argument. |
| */ |
| public abstract Register emitIntArg0(); |
| |
| /** |
| * Get the register containing the second 32-bit integer argument. |
| */ |
| public abstract Register emitIntArg1(); |
| |
| /** |
| * Emit code to add two 32-bit integer registers. May reuse one of the argument registers. |
| */ |
| public abstract Register emitIntAdd(Register a, Register b); |
| |
| /** |
| * Emit code to load a constant 32-bit integer to a register. |
| */ |
| public abstract Register emitLoadInt(int value); |
| |
| /** |
| * Emit code to load a constant 64-bit integer to a register. |
| */ |
| public abstract Register emitLoadLong(long value); |
| |
| /** |
| * Emit code to load a constant single-precision float to a register. |
| */ |
| public abstract Register emitLoadFloat(float value); |
| |
| /** |
| * Emit code to load a constant oop or metaspace pointer to a register. The pointer may be wide |
| * or narrow, depending on {@link HotSpotConstant#isCompressed() c.isCompressed()}. |
| */ |
| public abstract Register emitLoadPointer(HotSpotConstant c); |
| |
| /** |
| * Emit code to load a wide pointer from the {@link HotSpotCompiledCode#dataSection} to a |
| * register. |
| */ |
| public abstract Register emitLoadPointer(DataSectionReference ref); |
| |
| /** |
| * Emit code to load a narrow pointer from the {@link HotSpotCompiledCode#dataSection} to a |
| * register. |
| */ |
| public abstract Register emitLoadNarrowPointer(DataSectionReference ref); |
| |
| /** |
| * Emit code to load a (wide) pointer from a memory location to a register. |
| */ |
| public abstract Register emitLoadPointer(Register base, int offset); |
| |
| /** |
| * Emit code to store a 32-bit integer from a register to a new stack slot. |
| */ |
| public abstract StackSlot emitIntToStack(Register a); |
| |
| /** |
| * Emit code to store a 64-bit integer from a register to a new stack slot. |
| */ |
| public abstract StackSlot emitLongToStack(Register a); |
| |
| /** |
| * Emit code to store a single-precision float from a register to a new stack slot. |
| */ |
| public abstract StackSlot emitFloatToStack(Register a); |
| |
| /** |
| * Emit code to store a wide pointer from a register to a new stack slot. |
| */ |
| public abstract StackSlot emitPointerToStack(Register a); |
| |
| /** |
| * Emit code to store a narrow pointer from a register to a new stack slot. |
| */ |
| public abstract StackSlot emitNarrowPointerToStack(Register a); |
| |
| /** |
| * Emit code to uncompress a narrow pointer. The input pointer is guaranteed to be non-null. |
| */ |
| public abstract Register emitUncompressPointer(Register compressed, long base, int shift); |
| |
| /** |
| * Emit code to return from a function, returning a 32-bit integer. |
| */ |
| public abstract void emitIntRet(Register a); |
| |
| /** |
| * Emit code to return from a function, returning a wide oop pointer. |
| */ |
| public abstract void emitPointerRet(Register a); |
| |
| /** |
| * Emit code that traps, forcing a deoptimization. |
| */ |
| public abstract void emitTrap(DebugInfo info); |
| |
| public final ValueKind<?> narrowOopKind; |
| |
| protected final Buffer code; |
| protected final Buffer data; |
| private final ArrayList<Site> sites; |
| private final ArrayList<DataPatch> dataPatches; |
| |
| protected final CodeCacheProvider codeCache; |
| protected final TestHotSpotVMConfig config; |
| |
| private final Register[] registers; |
| private int nextRegister; |
| |
| protected int frameSize; |
| private int stackAlignment; |
| private int curStackSlot; |
| |
| private StackSlot deoptRescue; |
| |
| private static class TestValueKind extends ValueKind<TestValueKind> { |
| |
| TestValueKind(PlatformKind kind) { |
| super(kind); |
| } |
| |
| @Override |
| public TestValueKind changeType(PlatformKind kind) { |
| return new TestValueKind(kind); |
| } |
| } |
| |
| protected TestAssembler(CodeCacheProvider codeCache, TestHotSpotVMConfig config, int initialFrameSize, int stackAlignment, PlatformKind narrowOopKind, Register... registers) { |
| this.narrowOopKind = new TestValueKind(narrowOopKind); |
| |
| this.code = new Buffer(); |
| this.data = new Buffer(); |
| this.sites = new ArrayList<>(); |
| this.dataPatches = new ArrayList<>(); |
| |
| this.codeCache = codeCache; |
| this.config = config; |
| |
| this.registers = registers; |
| this.nextRegister = 0; |
| |
| this.frameSize = initialFrameSize; |
| this.stackAlignment = stackAlignment; |
| this.curStackSlot = initialFrameSize; |
| } |
| |
| public ValueKind<?> getValueKind(JavaKind kind) { |
| return new TestValueKind(codeCache.getTarget().arch.getPlatformKind(kind)); |
| } |
| |
| protected Register newRegister() { |
| return registers[nextRegister++]; |
| } |
| |
| protected StackSlot newStackSlot(PlatformKind kind) { |
| growFrame(kind.getSizeInBytes()); |
| return StackSlot.get(new TestValueKind(kind), -curStackSlot, true); |
| } |
| |
| protected void growFrame(int sizeInBytes) { |
| curStackSlot += sizeInBytes; |
| if (curStackSlot > frameSize) { |
| int newFrameSize = curStackSlot; |
| if (newFrameSize % stackAlignment != 0) { |
| newFrameSize += stackAlignment - (newFrameSize % stackAlignment); |
| } |
| emitGrowStack(newFrameSize - frameSize); |
| frameSize = newFrameSize; |
| } |
| } |
| |
| protected void setDeoptRescueSlot(StackSlot deoptRescue) { |
| this.deoptRescue = deoptRescue; |
| } |
| |
| protected void recordCall(InvokeTarget target, int size, boolean direct, DebugInfo debugInfo) { |
| sites.add(new Call(target, code.position(), size, direct, debugInfo)); |
| } |
| |
| protected void recordMark(Object id) { |
| sites.add(new Mark(code.position(), id)); |
| } |
| |
| protected void recordImplicitException(DebugInfo info) { |
| sites.add(new Infopoint(code.position(), info, InfopointReason.IMPLICIT_EXCEPTION)); |
| } |
| |
| protected void recordDataPatchInCode(Reference ref) { |
| sites.add(new DataPatch(code.position(), ref)); |
| } |
| |
| protected void recordDataPatchInData(Reference ref) { |
| dataPatches.add(new DataPatch(data.position(), ref)); |
| } |
| |
| public DataSectionReference emitDataItem(HotSpotConstant c) { |
| DataSectionReference ref = new DataSectionReference(); |
| ref.setOffset(data.position()); |
| |
| recordDataPatchInData(new ConstantReference((VMConstant) c)); |
| if (c.isCompressed()) { |
| data.emitInt(0xDEADDEAD); |
| } else { |
| data.emitLong(0xDEADDEADDEADDEADL); |
| } |
| |
| return ref; |
| } |
| |
| public HotSpotCompiledCode finish(HotSpotResolvedJavaMethod method) { |
| int id = method.allocateCompileId(0); |
| byte[] finishedCode = code.finish(); |
| Site[] finishedSites = sites.toArray(new Site[0]); |
| byte[] finishedData = data.finish(); |
| DataPatch[] finishedDataPatches = dataPatches.toArray(new DataPatch[0]); |
| return new HotSpotCompiledNmethod(method.getName(), finishedCode, finishedCode.length, finishedSites, new Assumption[0], new ResolvedJavaMethod[]{method}, new Comment[0], finishedData, 16, |
| finishedDataPatches, false, frameSize, deoptRescue, method, 0, id, 0L, false); |
| } |
| |
| protected static class Buffer { |
| |
| private ByteBuffer data = ByteBuffer.allocate(32).order(ByteOrder.nativeOrder()); |
| |
| private void ensureSize(int length) { |
| if (length >= data.limit()) { |
| byte[] newBuf = Arrays.copyOf(data.array(), length * 4); |
| ByteBuffer newData = ByteBuffer.wrap(newBuf); |
| newData.order(data.order()); |
| newData.position(data.position()); |
| data = newData; |
| } |
| } |
| |
| public int position() { |
| return data.position(); |
| } |
| |
| public void emitByte(int b) { |
| ensureSize(data.position() + 1); |
| data.put((byte) (b & 0xFF)); |
| } |
| |
| public void emitShort(int b) { |
| ensureSize(data.position() + 2); |
| data.putShort((short) b); |
| } |
| |
| public void emitInt(int b) { |
| ensureSize(data.position() + 4); |
| data.putInt(b); |
| } |
| |
| public void emitLong(long b) { |
| ensureSize(data.position() + 8); |
| data.putLong(b); |
| } |
| |
| public void emitFloat(float f) { |
| ensureSize(data.position() + 4); |
| data.putFloat(f); |
| } |
| |
| public void align(int alignment) { |
| int pos = data.position(); |
| int misaligned = pos % alignment; |
| if (misaligned != 0) { |
| pos += alignment - misaligned; |
| data.position(pos); |
| } |
| } |
| |
| private byte[] finish() { |
| return Arrays.copyOf(data.array(), data.position()); |
| } |
| } |
| } |