1 /*
2 * Copyright (c) 2013, 2015, 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 package org.graalvm.compiler.lir.sparc;
24
25 import static org.graalvm.compiler.lir.LIRInstruction.OperandFlag.ILLEGAL;
26 import static org.graalvm.compiler.lir.LIRInstruction.OperandFlag.REG;
27 import static org.graalvm.compiler.lir.LIRInstruction.OperandFlag.STACK;
28 import static jdk.vm.ci.code.ValueUtil.asRegister;
29 import static jdk.vm.ci.code.ValueUtil.isRegister;
30 import static jdk.vm.ci.sparc.SPARC.o7;
31
32 import org.graalvm.compiler.asm.sparc.SPARCAddress;
33 import org.graalvm.compiler.asm.sparc.SPARCMacroAssembler;
34 import org.graalvm.compiler.asm.sparc.SPARCMacroAssembler.ScratchRegister;
35 import org.graalvm.compiler.core.common.spi.ForeignCallLinkage;
36 import org.graalvm.compiler.debug.GraalError;
37 import org.graalvm.compiler.lir.LIRFrameState;
38 import org.graalvm.compiler.lir.LIRInstructionClass;
39 import org.graalvm.compiler.lir.Opcode;
40 import org.graalvm.compiler.lir.asm.CompilationResultBuilder;
41
42 import jdk.vm.ci.code.Register;
43 import jdk.vm.ci.meta.InvokeTarget;
44 import jdk.vm.ci.meta.ResolvedJavaMethod;
45 import jdk.vm.ci.meta.Value;
46
47 public class SPARCCall {
48
49 public abstract static class CallOp extends SPARCLIRInstruction {
50 @Def({REG, ILLEGAL}) protected Value result;
51 @Use({REG, STACK}) protected Value[] parameters;
52 @Temp({REG, STACK}) protected Value[] temps;
53 @State protected LIRFrameState state;
54
55 protected CallOp(LIRInstructionClass<? extends CallOp> c, SizeEstimate size, Value result, Value[] parameters, Value[] temps, LIRFrameState state) {
56 super(c, size);
57 this.result = result;
58 this.parameters = parameters;
59 this.state = state;
60 this.temps = addStackSlotsToTemporaries(parameters, temps);
61 assert temps != null;
62 }
63
64 @Override
65 public boolean destroysCallerSavedRegisters() {
66 return true;
67 }
68 }
69
70 public abstract static class MethodCallOp extends CallOp {
71
72 protected final ResolvedJavaMethod callTarget;
73
74 protected MethodCallOp(LIRInstructionClass<? extends MethodCallOp> c, SizeEstimate size, ResolvedJavaMethod callTarget, Value result, Value[] parameters, Value[] temps, LIRFrameState state) {
75 super(c, size, result, parameters, temps, state);
76 this.callTarget = callTarget;
77 }
78
79 }
80
81 @Opcode("CALL_DIRECT")
82 public abstract static class DirectCallOp extends MethodCallOp {
83 private boolean emitted = false;
84 private int before = -1;
85
86 public DirectCallOp(LIRInstructionClass<? extends DirectCallOp> c, SizeEstimate size, ResolvedJavaMethod callTarget, Value result, Value[] parameters, Value[] temps, LIRFrameState state) {
87 super(c, size, callTarget, result, parameters, temps, state);
88 }
89
90 @Override
91 public void emitCode(CompilationResultBuilder crb, SPARCMacroAssembler masm) {
92 if (!emitted) {
93 emitCallPrefixCode(crb, masm);
94 directCall(crb, masm, callTarget, null, state);
95 } else {
96 int after = masm.position();
97 if (after - before == 4) {
98 masm.nop();
99 } else if (after - before == 8) {
100 // everything is fine;
101 } else {
102 GraalError.shouldNotReachHere("" + (after - before));
103 }
104 after = masm.position();
105 crb.recordDirectCall(before, after, callTarget, state);
106 crb.recordExceptionHandlers(after, state);
107 masm.ensureUniquePC();
108 }
109 }
110
111 @SuppressWarnings("unused")
112 public void emitCallPrefixCode(CompilationResultBuilder crb, SPARCMacroAssembler masm) {
113 //
114 }
115
116 public void emitControlTransfer(CompilationResultBuilder crb, SPARCMacroAssembler masm) {
117 assert !emitted;
118 emitCallPrefixCode(crb, masm);
119 before = masm.call(0);
120 emitted = true;
121 }
122
123 public void resetState() {
124 emitted = false;
125 before = -1;
126 }
127 }
128
129 @Opcode("CALL_INDIRECT")
130 public abstract static class IndirectCallOp extends MethodCallOp {
131 @Use({REG}) protected Value targetAddress;
132
133 protected IndirectCallOp(LIRInstructionClass<? extends IndirectCallOp> c, SizeEstimate size, ResolvedJavaMethod callTarget, Value result, Value[] parameters, Value[] temps,
134 Value targetAddress, LIRFrameState state) {
135 super(c, size, callTarget, result, parameters, temps, state);
136 this.targetAddress = targetAddress;
137 }
138
139 @Override
140 public void emitCode(CompilationResultBuilder crb, SPARCMacroAssembler masm) {
141 indirectCall(crb, masm, asRegister(targetAddress), callTarget, state);
142 }
143
144 @Override
145 public void verify() {
146 super.verify();
147 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";
148 }
149 }
150
151 public abstract static class ForeignCallOp extends CallOp {
152 public static final LIRInstructionClass<ForeignCallOp> TYPE = LIRInstructionClass.create(ForeignCallOp.class);
153
154 protected final ForeignCallLinkage callTarget;
155
156 public ForeignCallOp(LIRInstructionClass<? extends ForeignCallOp> c, SizeEstimate size, ForeignCallLinkage callTarget, Value result, Value[] parameters, Value[] temps, LIRFrameState state) {
157 super(c, size, result, parameters, temps, state);
158 this.callTarget = callTarget;
159 }
160
161 @Override
162 public boolean destroysCallerSavedRegisters() {
163 return callTarget.destroysRegisters();
164 }
165 }
166
167 @Opcode("NEAR_FOREIGN_CALL")
168 public static final class DirectNearForeignCallOp extends ForeignCallOp {
169 public static final LIRInstructionClass<DirectNearForeignCallOp> TYPE = LIRInstructionClass.create(DirectNearForeignCallOp.class);
170 public static final SizeEstimate SIZE = SizeEstimate.create(1);
171
172 public DirectNearForeignCallOp(ForeignCallLinkage linkage, Value result, Value[] parameters, Value[] temps, LIRFrameState state) {
173 super(TYPE, SIZE, linkage, result, parameters, temps, state);
174 }
175
176 @Override
177 public void emitCode(CompilationResultBuilder crb, SPARCMacroAssembler masm) {
178 directCall(crb, masm, callTarget, null, state);
179 }
180 }
181
182 @Opcode("FAR_FOREIGN_CALL")
183 public static final class DirectFarForeignCallOp extends ForeignCallOp {
184 public static final LIRInstructionClass<DirectFarForeignCallOp> TYPE = LIRInstructionClass.create(DirectFarForeignCallOp.class);
185 public static final SizeEstimate SIZE = SizeEstimate.create(1);
186
187 public DirectFarForeignCallOp(ForeignCallLinkage callTarget, Value result, Value[] parameters, Value[] temps, LIRFrameState state) {
188 super(TYPE, SIZE, callTarget, result, parameters, temps, state);
189 }
190
191 @Override
192 public void emitCode(CompilationResultBuilder crb, SPARCMacroAssembler masm) {
193 try (ScratchRegister scratch = masm.getScratchRegister()) {
194 directCall(crb, masm, callTarget, scratch.getRegister(), state);
195 }
196 }
197 }
198
199 public static void directCall(CompilationResultBuilder crb, SPARCMacroAssembler masm, InvokeTarget callTarget, Register scratch, LIRFrameState info) {
200 int before;
201 if (scratch != null) {
202 // offset might not fit a 30-bit displacement, generate an
203 // indirect call with a 64-bit immediate
204 before = masm.position();
205 masm.sethix(0L, scratch, true);
206 masm.jmpl(scratch, 0, o7);
207 } else {
208 before = masm.call(0);
209 }
210 masm.nop(); // delay slot
211 int after = masm.position();
212 crb.recordDirectCall(before, after, callTarget, info);
213 crb.recordExceptionHandlers(after, info);
214 masm.ensureUniquePC();
215 }
216
217 public static void indirectJmp(CompilationResultBuilder crb, SPARCMacroAssembler masm, Register dst, InvokeTarget target) {
218 int before = masm.position();
219 masm.sethix(0L, dst, true);
220 masm.jmp(new SPARCAddress(dst, 0));
221 masm.nop(); // delay slot
222 int after = masm.position();
223 crb.recordIndirectCall(before, after, target, null);
224 masm.ensureUniquePC();
225 }
226
227 public static void indirectCall(CompilationResultBuilder crb, SPARCMacroAssembler masm, Register dst, InvokeTarget callTarget, LIRFrameState info) {
228 int before = masm.jmpl(dst, 0, o7);
229 masm.nop(); // delay slot
230 int after = masm.position();
231 crb.recordIndirectCall(before, after, callTarget, info);
232 crb.recordExceptionHandlers(after, info);
233 masm.ensureUniquePC();
234 }
235 }