1 /*
2 * Copyright (c) 2013, 2019, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 */
23
24
25 package org.graalvm.compiler.hotspot.sparc;
26
27 import static jdk.vm.ci.code.ValueUtil.asRegister;
28 import static org.graalvm.compiler.asm.sparc.SPARCAssembler.BPR;
29 import static org.graalvm.compiler.asm.sparc.SPARCAssembler.Annul.ANNUL;
30 import static org.graalvm.compiler.asm.sparc.SPARCAssembler.Annul.NOT_ANNUL;
31 import static org.graalvm.compiler.asm.sparc.SPARCAssembler.BranchPredict.PREDICT_NOT_TAKEN;
32 import static org.graalvm.compiler.asm.sparc.SPARCAssembler.BranchPredict.PREDICT_TAKEN;
33 import static org.graalvm.compiler.asm.sparc.SPARCAssembler.RCondition.Rc_nz;
34 import static org.graalvm.compiler.asm.sparc.SPARCAssembler.RCondition.Rc_z;
35 import static org.graalvm.compiler.lir.LIRInstruction.OperandFlag.ILLEGAL;
36 import static org.graalvm.compiler.lir.LIRInstruction.OperandFlag.REG;
37 import static org.graalvm.compiler.lir.LIRInstruction.OperandFlag.STACK;
38 import static org.graalvm.compiler.lir.sparc.SPARCMove.loadFromConstantTable;
39
40 import org.graalvm.compiler.asm.Label;
41 import org.graalvm.compiler.asm.sparc.SPARCAddress;
42 import org.graalvm.compiler.asm.sparc.SPARCMacroAssembler;
43 import org.graalvm.compiler.asm.sparc.SPARCMacroAssembler.ScratchRegister;
44 import org.graalvm.compiler.core.common.CompressEncoding;
45 import org.graalvm.compiler.lir.LIRInstructionClass;
46 import org.graalvm.compiler.lir.StandardOp.LoadConstantOp;
47 import org.graalvm.compiler.lir.asm.CompilationResultBuilder;
48 import org.graalvm.compiler.lir.sparc.SPARCDelayedControlTransfer;
49 import org.graalvm.compiler.lir.sparc.SPARCLIRInstruction;
50 import org.graalvm.compiler.lir.sparc.SPARCTailDelayedLIRInstruction;
51
52 import jdk.vm.ci.code.Register;
53 import jdk.vm.ci.code.ValueUtil;
54 import jdk.vm.ci.hotspot.HotSpotConstant;
55 import jdk.vm.ci.meta.AllocatableValue;
56 import jdk.vm.ci.meta.Constant;
57 import jdk.vm.ci.sparc.SPARC;
58
59 public class SPARCHotSpotMove {
60
61 public static class LoadHotSpotObjectConstantInline extends SPARCLIRInstruction implements SPARCTailDelayedLIRInstruction, LoadConstantOp {
62 public static final LIRInstructionClass<LoadHotSpotObjectConstantInline> TYPE = LIRInstructionClass.create(LoadHotSpotObjectConstantInline.class);
63
64 public static final SizeEstimate SIZE = SizeEstimate.create(8);
65 private HotSpotConstant constant;
66 @Def({REG, STACK}) AllocatableValue result;
67
68 public LoadHotSpotObjectConstantInline(HotSpotConstant constant, AllocatableValue result) {
69 super(TYPE, SIZE);
70 this.constant = constant;
71 this.result = result;
72 }
73
74 @Override
75 protected void emitCode(CompilationResultBuilder crb, SPARCMacroAssembler masm) {
76 crb.recordInlineDataInCode(constant);
77 if (constant.isCompressed()) {
78 masm.setw(0, asRegister(result), true);
79 } else {
80 masm.setx(0, asRegister(result), true);
81 }
82 }
83
84 @Override
85 public AllocatableValue getResult() {
86 return result;
87 }
88
89 @Override
90 public Constant getConstant() {
91 return constant;
92 }
93 }
94
95 public static class LoadHotSpotObjectConstantFromTable extends SPARCLIRInstruction implements SPARCTailDelayedLIRInstruction {
96 public static final LIRInstructionClass<LoadHotSpotObjectConstantFromTable> TYPE = LIRInstructionClass.create(LoadHotSpotObjectConstantFromTable.class);
97
98 public static final SizeEstimate SIZE = SizeEstimate.create(2, 8);
99 private final HotSpotConstant constant;
100 @Use({REG}) private AllocatableValue constantTableBase;
101 @Def({REG, STACK}) AllocatableValue result;
102
103 public LoadHotSpotObjectConstantFromTable(HotSpotConstant constant, AllocatableValue result, AllocatableValue constantTableBase) {
104 super(TYPE, SIZE);
105 this.constant = constant;
106 this.result = result;
107 this.constantTableBase = constantTableBase;
108 }
109
110 @Override
111 protected void emitCode(CompilationResultBuilder crb, SPARCMacroAssembler masm) {
112 try (ScratchRegister scratch = masm.getScratchRegister()) {
113 boolean isStack = ValueUtil.isStackSlot(result);
114 Register register;
115 if (isStack) {
116 register = scratch.getRegister();
117 } else {
118 register = asRegister(result);
119 }
120 int bytes = loadFromConstantTable(crb, masm, asRegister(constantTableBase), constant, register, SPARCDelayedControlTransfer.DUMMY);
121 if (isStack) {
122 masm.st(register, (SPARCAddress) crb.asAddress(result), bytes);
123 }
124 }
125 }
126 }
127
128 public static final class CompressPointer extends SPARCLIRInstruction {
129 public static final LIRInstructionClass<CompressPointer> TYPE = LIRInstructionClass.create(CompressPointer.class);
130 public static final SizeEstimate SIZE = SizeEstimate.create(5);
131
132 private final CompressEncoding encoding;
133 private final boolean nonNull;
134
135 @Def({REG}) protected AllocatableValue result;
136 @Use({REG}) protected AllocatableValue input;
137 @Alive({REG, ILLEGAL}) protected AllocatableValue baseRegister;
138
139 public CompressPointer(AllocatableValue result, AllocatableValue input, AllocatableValue baseRegister, CompressEncoding encoding, boolean nonNull) {
140 super(TYPE, SIZE);
141 this.result = result;
142 this.input = input;
143 this.baseRegister = baseRegister;
144 this.encoding = encoding;
145 this.nonNull = nonNull;
146 }
147
148 @Override
149 public void emitCode(CompilationResultBuilder crb, SPARCMacroAssembler masm) {
150 Register inputRegister = asRegister(input);
151 Register resReg = asRegister(result);
152 if (encoding.hasBase()) {
153 Register baseReg = asRegister(baseRegister);
154 if (!nonNull) {
155 Label done = new Label();
156 if (inputRegister.equals(resReg)) {
157 BPR.emit(masm, Rc_nz, ANNUL, PREDICT_TAKEN, inputRegister, done);
158 masm.sub(inputRegister, baseReg, resReg);
159 masm.bind(done);
160 if (encoding.getShift() != 0) {
161 masm.srlx(resReg, encoding.getShift(), resReg);
162 }
163 } else {
164 BPR.emit(masm, Rc_z, NOT_ANNUL, PREDICT_NOT_TAKEN, inputRegister, done);
165 masm.mov(SPARC.g0, resReg);
166 masm.sub(inputRegister, baseReg, resReg);
167 if (encoding.getShift() != 0) {
168 masm.srlx(resReg, encoding.getShift(), resReg);
169 }
170 masm.bind(done);
171 }
172 } else {
173 masm.sub(inputRegister, baseReg, resReg);
174 if (encoding.getShift() != 0) {
175 masm.srlx(resReg, encoding.getShift(), resReg);
176 }
177 }
178 } else {
179 if (encoding.getShift() != 0) {
180 masm.srlx(inputRegister, encoding.getShift(), resReg);
181 }
182 }
183 }
184 }
185
186 public static final class UncompressPointer extends SPARCLIRInstruction {
187 public static final LIRInstructionClass<UncompressPointer> TYPE = LIRInstructionClass.create(UncompressPointer.class);
188 public static final SizeEstimate SIZE = SizeEstimate.create(4);
189
190 private final CompressEncoding encoding;
191 private final boolean nonNull;
192
193 @Def({REG}) protected AllocatableValue result;
194 @Use({REG}) protected AllocatableValue input;
195 @Alive({REG, ILLEGAL}) protected AllocatableValue baseRegister;
196
197 public UncompressPointer(AllocatableValue result, AllocatableValue input, AllocatableValue baseRegister, CompressEncoding encoding, boolean nonNull) {
198 super(TYPE, SIZE);
199 this.result = result;
200 this.input = input;
201 this.baseRegister = baseRegister;
202 this.encoding = encoding;
203 this.nonNull = nonNull;
204 }
205
206 @Override
207 public void emitCode(CompilationResultBuilder crb, SPARCMacroAssembler masm) {
208 Register inputRegister = asRegister(input);
209 Register resReg = asRegister(result);
210 Register baseReg = encoding.hasBase() ? asRegister(baseRegister) : null;
211 emitUncompressCode(masm, inputRegister, resReg, baseReg, encoding.getShift(), nonNull);
212 }
213
214 public static void emitUncompressCode(SPARCMacroAssembler masm, Register inputRegister, Register resReg, Register baseReg, int shift, boolean nonNull) {
215 Register secondaryInput;
216 if (shift != 0) {
217 masm.sllx(inputRegister, shift, resReg);
218 secondaryInput = resReg;
219 } else {
220 secondaryInput = inputRegister;
221 }
222
223 if (baseReg != null) {
224 if (nonNull) {
225 masm.add(secondaryInput, baseReg, resReg);
226 } else {
227 Label done = new Label();
228 BPR.emit(masm, Rc_nz, ANNUL, PREDICT_TAKEN, secondaryInput, done);
229 masm.add(baseReg, secondaryInput, resReg);
230 masm.bind(done);
231 }
232 }
233 }
234 }
235
236 }