1 /* 2 * Copyright (c) 2013, 2018, 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.lir.sparc; 26 27 import static org.graalvm.compiler.lir.LIRInstruction.OperandFlag.ILLEGAL; 28 import static org.graalvm.compiler.lir.LIRInstruction.OperandFlag.REG; 29 import static org.graalvm.compiler.lir.LIRInstruction.OperandFlag.STACK; 30 import static jdk.vm.ci.code.ValueUtil.asRegister; 31 import static jdk.vm.ci.code.ValueUtil.isRegister; 32 import static jdk.vm.ci.sparc.SPARC.o7; 33 34 import org.graalvm.compiler.asm.sparc.SPARCAddress; 35 import org.graalvm.compiler.asm.sparc.SPARCMacroAssembler; 36 import org.graalvm.compiler.asm.sparc.SPARCMacroAssembler.ScratchRegister; 37 import org.graalvm.compiler.core.common.spi.ForeignCallLinkage; 38 import org.graalvm.compiler.debug.GraalError; 39 import org.graalvm.compiler.lir.LIRFrameState; 40 import org.graalvm.compiler.lir.LIRInstructionClass; 41 import org.graalvm.compiler.lir.Opcode; 42 import org.graalvm.compiler.lir.asm.CompilationResultBuilder; 43 44 import jdk.vm.ci.code.Register; 45 import jdk.vm.ci.meta.InvokeTarget; 46 import jdk.vm.ci.meta.ResolvedJavaMethod; 47 import jdk.vm.ci.meta.Value; 48 49 public class SPARCCall { 50 51 public abstract static class CallOp extends SPARCLIRInstruction { 52 @Def({REG, ILLEGAL}) protected Value result; 53 @Use({REG, STACK}) protected Value[] parameters; 54 @Temp({REG, STACK}) protected Value[] temps; 55 @State protected LIRFrameState state; 56 57 protected CallOp(LIRInstructionClass<? extends CallOp> c, SizeEstimate size, Value result, Value[] parameters, Value[] temps, LIRFrameState state) { 58 super(c, size); 59 this.result = result; 60 this.parameters = parameters; 61 this.state = state; 62 this.temps = addStackSlotsToTemporaries(parameters, temps); 63 assert temps != null; 64 } 65 66 @Override 67 public boolean destroysCallerSavedRegisters() { 68 return true; 69 } 70 } 71 72 public abstract static class MethodCallOp extends CallOp { 73 74 protected final ResolvedJavaMethod callTarget; 75 76 protected MethodCallOp(LIRInstructionClass<? extends MethodCallOp> c, SizeEstimate size, ResolvedJavaMethod callTarget, Value result, Value[] parameters, Value[] temps, LIRFrameState state) { 77 super(c, size, result, parameters, temps, state); 78 this.callTarget = callTarget; 79 } 80 81 } 82 83 @Opcode("CALL_DIRECT") 84 public abstract static class DirectCallOp extends MethodCallOp { 85 private boolean emitted = false; 86 private int before = -1; 87 88 public DirectCallOp(LIRInstructionClass<? extends DirectCallOp> c, SizeEstimate size, ResolvedJavaMethod callTarget, Value result, Value[] parameters, Value[] temps, LIRFrameState state) { 89 super(c, size, callTarget, result, parameters, temps, state); 90 } 91 92 @Override 93 public void emitCode(CompilationResultBuilder crb, SPARCMacroAssembler masm) { 94 if (!emitted) { 95 emitCallPrefixCode(crb, masm); 96 directCall(crb, masm, callTarget, null, state); 97 } else { 98 int after = masm.position(); 99 if (after - before == 4) { 100 masm.nop(); 101 } else if (after - before == 8) { 102 // everything is fine; 103 } else { 104 GraalError.shouldNotReachHere("" + (after - before)); 105 } 106 after = masm.position(); 107 crb.recordDirectCall(before, after, callTarget, state); 108 crb.recordExceptionHandlers(after, state); 109 masm.ensureUniquePC(); 110 } 111 } 112 113 @SuppressWarnings("unused") 114 public void emitCallPrefixCode(CompilationResultBuilder crb, SPARCMacroAssembler masm) { 115 // 116 } 117 118 public void emitControlTransfer(CompilationResultBuilder crb, SPARCMacroAssembler masm) { 119 assert !emitted; 120 emitCallPrefixCode(crb, masm); 121 before = masm.call(0); 122 emitted = true; 123 } 124 125 public void resetState() { 126 emitted = false; 127 before = -1; 128 } 129 } 130 131 @Opcode("CALL_INDIRECT") 132 public abstract static class IndirectCallOp extends MethodCallOp { 133 @Use({REG}) protected Value targetAddress; 134 135 protected IndirectCallOp(LIRInstructionClass<? extends IndirectCallOp> c, SizeEstimate size, ResolvedJavaMethod callTarget, Value result, Value[] parameters, Value[] temps, 136 Value targetAddress, LIRFrameState state) { 137 super(c, size, callTarget, result, parameters, temps, state); 138 this.targetAddress = targetAddress; 139 } 140 141 @Override 142 public void emitCode(CompilationResultBuilder crb, SPARCMacroAssembler masm) { 143 indirectCall(crb, masm, asRegister(targetAddress), callTarget, state); 144 } 145 146 @Override 147 public void verify() { 148 super.verify(); 149 assert isRegister(targetAddress) : "The current register allocator cannot handle variables to be used at call sites, it must be in a fixed register for now"; 150 } 151 } 152 153 public abstract static class ForeignCallOp extends CallOp { 154 public static final LIRInstructionClass<ForeignCallOp> TYPE = LIRInstructionClass.create(ForeignCallOp.class); 155 156 protected final ForeignCallLinkage callTarget; 157 158 public ForeignCallOp(LIRInstructionClass<? extends ForeignCallOp> c, SizeEstimate size, ForeignCallLinkage callTarget, Value result, Value[] parameters, Value[] temps, LIRFrameState state) { 159 super(c, size, result, parameters, temps, state); 160 this.callTarget = callTarget; 161 } 162 163 @Override 164 public boolean destroysCallerSavedRegisters() { 165 return callTarget.destroysRegisters(); 166 } 167 } 168 169 @Opcode("NEAR_FOREIGN_CALL") 170 public static final class DirectNearForeignCallOp extends ForeignCallOp { 171 public static final LIRInstructionClass<DirectNearForeignCallOp> TYPE = LIRInstructionClass.create(DirectNearForeignCallOp.class); 172 public static final SizeEstimate SIZE = SizeEstimate.create(1); 173 174 public DirectNearForeignCallOp(ForeignCallLinkage linkage, Value result, Value[] parameters, Value[] temps, LIRFrameState state) { 175 super(TYPE, SIZE, linkage, result, parameters, temps, state); 176 } 177 178 @Override 179 public void emitCode(CompilationResultBuilder crb, SPARCMacroAssembler masm) { 180 directCall(crb, masm, callTarget, null, state); 181 } 182 } 183 184 @Opcode("FAR_FOREIGN_CALL") 185 public static final class DirectFarForeignCallOp extends ForeignCallOp { 186 public static final LIRInstructionClass<DirectFarForeignCallOp> TYPE = LIRInstructionClass.create(DirectFarForeignCallOp.class); 187 public static final SizeEstimate SIZE = SizeEstimate.create(1); 188 189 public DirectFarForeignCallOp(ForeignCallLinkage callTarget, Value result, Value[] parameters, Value[] temps, LIRFrameState state) { 190 super(TYPE, SIZE, callTarget, result, parameters, temps, state); 191 } 192 193 @Override 194 public void emitCode(CompilationResultBuilder crb, SPARCMacroAssembler masm) { 195 try (ScratchRegister scratch = masm.getScratchRegister()) { 196 directCall(crb, masm, callTarget, scratch.getRegister(), state); 197 } 198 } 199 } 200 201 public static void directCall(CompilationResultBuilder crb, SPARCMacroAssembler masm, InvokeTarget callTarget, Register scratch, LIRFrameState info) { 202 int before; 203 if (scratch != null) { 204 // offset might not fit a 30-bit displacement, generate an 205 // indirect call with a 64-bit immediate 206 before = masm.position(); 207 masm.sethix(0L, scratch, true); 208 masm.jmpl(scratch, 0, o7); 209 } else { 210 before = masm.call(0); 211 } 212 masm.nop(); // delay slot 213 int after = masm.position(); 214 crb.recordDirectCall(before, after, callTarget, info); 215 crb.recordExceptionHandlers(after, info); 216 masm.ensureUniquePC(); 217 } 218 219 public static void indirectJmp(CompilationResultBuilder crb, SPARCMacroAssembler masm, Register dst, InvokeTarget target) { 220 int before = masm.position(); 221 masm.sethix(0L, dst, true); 222 masm.jmp(new SPARCAddress(dst, 0)); 223 masm.nop(); // delay slot 224 int after = masm.position(); 225 crb.recordIndirectCall(before, after, target, null); 226 masm.ensureUniquePC(); 227 } 228 229 public static void indirectCall(CompilationResultBuilder crb, SPARCMacroAssembler masm, Register dst, InvokeTarget callTarget, LIRFrameState info) { 230 int before = masm.jmpl(dst, 0, o7); 231 masm.nop(); // delay slot 232 int after = masm.position(); 233 crb.recordIndirectCall(before, after, callTarget, info); 234 crb.recordExceptionHandlers(after, info); 235 masm.ensureUniquePC(); 236 } 237 }