1 /*
2 * Copyright (c) 2011, 2012, 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 com.oracle.graal.lir.asm;
24
25 import static com.oracle.graal.api.code.ValueUtil.*;
26
27 import java.util.*;
28
29 import com.oracle.graal.api.code.*;
30 import com.oracle.graal.api.meta.*;
31 import com.oracle.graal.asm.*;
32 import com.oracle.graal.debug.*;
33 import com.oracle.graal.graph.*;
34 import com.oracle.graal.lir.*;
35
36 public class TargetMethodAssembler {
37
38 private static class ExceptionInfo {
39
40 public final int codeOffset;
41 public final LabelRef exceptionEdge;
42
43 public ExceptionInfo(int pcOffset, LabelRef exceptionEdge) {
44 this.codeOffset = pcOffset;
45 this.exceptionEdge = exceptionEdge;
46 }
47 }
48
49 public final AbstractAssembler asm;
50 public final CompilationResult compilationResult;
51 public final TargetDescription target;
52 public final CodeCacheProvider runtime;
53 public final FrameMap frameMap;
54
55 /**
56 * The object that emits code for managing a method's frame. If null, no frame is used by the
57 * method.
58 */
59 public final FrameContext frameContext;
60
61 private List<ExceptionInfo> exceptionInfoList;
62
63 public TargetMethodAssembler(TargetDescription target, CodeCacheProvider runtime, FrameMap frameMap, AbstractAssembler asm, FrameContext frameContext, CompilationResult compilationResult) {
64 this.target = target;
65 this.runtime = runtime;
66 this.frameMap = frameMap;
67 this.asm = asm;
68 this.compilationResult = compilationResult;
69 this.frameContext = frameContext;
70 }
71
72 public void setFrameSize(int frameSize) {
73 compilationResult.setFrameSize(frameSize);
74 }
75
76 private static final CompilationResult.Mark[] NO_REFS = {};
77
78 public CompilationResult.Mark recordMark(Object id) {
79 return compilationResult.recordMark(asm.codeBuffer.position(), id, NO_REFS);
80 }
81
82 public CompilationResult.Mark recordMark(Object id, CompilationResult.Mark... references) {
83 return compilationResult.recordMark(asm.codeBuffer.position(), id, references);
84 }
85
86 public void blockComment(String s) {
87 compilationResult.addAnnotation(new CompilationResult.CodeComment(asm.codeBuffer.position(), s));
88 }
89
90 public CompilationResult finishTargetMethod(Object name, boolean isStub) {
91 // Install code, data and frame size
92 compilationResult.setTargetCode(asm.codeBuffer.close(false), asm.codeBuffer.position());
93
94 // Record exception handlers if they exist
95 if (exceptionInfoList != null) {
96 for (ExceptionInfo ei : exceptionInfoList) {
97 int codeOffset = ei.codeOffset;
98 compilationResult.recordExceptionHandler(codeOffset, ei.exceptionEdge.label().position());
99 }
100 }
101
102 Debug.metric("TargetMethods").increment();
103 Debug.metric("CodeBytesEmitted").add(compilationResult.getTargetCodeSize());
104 Debug.metric("SafepointsEmitted").add(compilationResult.getSafepoints().size());
105 Debug.metric("DataPatches").add(compilationResult.getDataReferences().size());
106 Debug.metric("ExceptionHandlersEmitted").add(compilationResult.getExceptionHandlers().size());
107 Debug.log("Finished target method %s, isStub %b", name, isStub);
108 return compilationResult;
109 }
110
111 public void recordExceptionHandlers(int pcOffset, LIRFrameState info) {
112 if (info != null) {
113 if (info.exceptionEdge != null) {
114 if (exceptionInfoList == null) {
115 exceptionInfoList = new ArrayList<>(4);
116 }
117 exceptionInfoList.add(new ExceptionInfo(pcOffset, info.exceptionEdge));
118 }
119 }
120 }
121
122 public void recordImplicitException(int pcOffset, LIRFrameState info) {
123 // record an implicit exception point
124 if (info != null) {
125 compilationResult.recordSafepoint(pcOffset, info.debugInfo());
126 assert info.exceptionEdge == null;
127 }
128 }
129
130 public void recordDirectCall(int posBefore, int posAfter, InvokeTarget callTarget, LIRFrameState info) {
131 DebugInfo debugInfo = info != null ? info.debugInfo() : null;
132 compilationResult.recordCall(posBefore, posAfter - posBefore, callTarget, debugInfo, true);
133 }
134
135 public void recordIndirectCall(int posBefore, int posAfter, InvokeTarget callTarget, LIRFrameState info) {
136 DebugInfo debugInfo = info != null ? info.debugInfo() : null;
137 compilationResult.recordCall(posBefore, posAfter - posBefore, callTarget, debugInfo, false);
138 }
139
140 public void recordSafepoint(int pos, LIRFrameState info) {
141 // safepoints always need debug info
142 DebugInfo debugInfo = info.debugInfo();
143 compilationResult.recordSafepoint(pos, debugInfo);
144 }
145
146 public AbstractAddress recordDataReferenceInCode(Constant data, int alignment, boolean inlined) {
147 assert data != null;
148 int pos = asm.codeBuffer.position();
149 Debug.log("Data reference in code: pos = %d, data = %s", pos, data.toString());
150 compilationResult.recordDataReference(pos, data, alignment, inlined);
151 return asm.getPlaceholder();
152 }
153
154 /**
155 * Returns the integer value of any constant that can be represented by a 32-bit integer value,
156 * including long constants that fit into the 32-bit range.
157 */
158 public int asIntConst(Value value) {
159 assert (value.getKind().getStackKind() == Kind.Int || value.getKind() == Kind.Long) && isConstant(value);
160 Constant constant = (Constant) value;
161 assert !runtime.needsDataPatch(constant) : constant + " should be in a DataPatch";
162 long c = constant.asLong();
163 if (!NumUtil.isInt(c)) {
164 throw GraalInternalError.shouldNotReachHere();
165 }
166 return (int) c;
167 }
168
169 /**
170 * Returns the address of a float constant that is embedded as a data references into the code.
171 */
172 public AbstractAddress asFloatConstRef(Value value) {
173 return asFloatConstRef(value, 4);
174 }
175
176 public AbstractAddress asFloatConstRef(Value value, int alignment) {
177 assert value.getKind() == Kind.Float && isConstant(value);
178 return recordDataReferenceInCode((Constant) value, alignment, false);
179 }
180
181 /**
182 * Returns the address of a double constant that is embedded as a data references into the code.
183 */
184 public AbstractAddress asDoubleConstRef(Value value) {
185 return asDoubleConstRef(value, 8);
186 }
187
188 public AbstractAddress asDoubleConstRef(Value value, int alignment) {
189 assert value.getKind() == Kind.Double && isConstant(value);
190 return recordDataReferenceInCode((Constant) value, alignment, false);
191 }
192
193 /**
194 * Returns the address of a long constant that is embedded as a data references into the code.
195 */
196 public AbstractAddress asLongConstRef(Value value) {
197 assert value.getKind() == Kind.Long && isConstant(value);
198 return recordDataReferenceInCode((Constant) value, 8, false);
199 }
200
201 public AbstractAddress asIntAddr(Value value) {
202 assert value.getKind() == Kind.Int;
203 return asAddress(value);
204 }
205
206 public AbstractAddress asLongAddr(Value value) {
207 assert value.getKind() == Kind.Long;
208 return asAddress(value);
209 }
210
211 public AbstractAddress asObjectAddr(Value value) {
212 assert value.getKind() == Kind.Object;
213 return asAddress(value);
214 }
215
216 public AbstractAddress asFloatAddr(Value value) {
217 assert value.getKind() == Kind.Float;
218 return asAddress(value);
219 }
220
221 public AbstractAddress asDoubleAddr(Value value) {
222 assert value.getKind() == Kind.Double;
223 return asAddress(value);
224 }
225
226 public AbstractAddress asAddress(Value value) {
227 assert isStackSlot(value);
228 StackSlot slot = asStackSlot(value);
229 return asm.makeAddress(frameMap.registerConfig.getFrameRegister(), frameMap.offsetForStackSlot(slot));
230 }
231 }