1 /*
2 * Copyright (c) 2016, 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 package jdk.tools.jaotc;
25
26 import java.util.ArrayList;
27
28 import jdk.tools.jaotc.binformat.BinaryContainer;
29 import jdk.tools.jaotc.binformat.CodeContainer;
30 import jdk.tools.jaotc.binformat.Symbol;
31 import jdk.tools.jaotc.CompiledMethodInfo.StubInformation;
32 import org.graalvm.compiler.code.CompilationResult;
33 import org.graalvm.compiler.hotspot.HotSpotForeignCallLinkage;
34
35 import jdk.vm.ci.code.TargetDescription;
36 import jdk.vm.ci.code.site.Call;
37 import jdk.vm.ci.code.site.Infopoint;
38 import jdk.vm.ci.code.site.InfopointReason;
39 import jdk.vm.ci.meta.ResolvedJavaMethod;
40
41 class CodeSectionProcessor {
42
43 private final TargetDescription target;
44
45 private final BinaryContainer binaryContainer;
46
47 CodeSectionProcessor(DataBuilder dataBuilder) {
48 this.target = dataBuilder.getBackend().getTarget();
49 this.binaryContainer = dataBuilder.getBinaryContainer();
50 }
51
52 /**
53 * Method that looks at code section of a compiled result {@code compClass} and records function
54 * entry point symbols along with the text section contents. Note that the text section contents
55 * are not yet ready to be written in the form of a binary text section since the contents may
56 * need to be patched with references to other sections.
57 *
58 * @param compClass Graal compilation result.
59 */
60 void process(AOTCompiledClass compClass) {
61 ArrayList<CompiledMethodInfo> compiledMethods = compClass.getCompiledMethods();
72 for (Infopoint infopoint : compResult.getInfopoints()) {
73 if (infopoint.reason == InfopointReason.CALL) {
74 final Call callInfopoint = (Call) infopoint;
75 if (callInfopoint.target instanceof HotSpotForeignCallLinkage) {
76 // TODO 4 is x86 size of relative displacement.
77 // For SPARC need something different.
78 int destOffset = infopoint.pcOffset + callInfopoint.size - 4;
79 targetCode[destOffset + 0] = 0;
80 targetCode[destOffset + 1] = 0;
81 targetCode[destOffset + 2] = 0;
82 targetCode[destOffset + 3] = 0;
83 }
84 }
85 }
86
87 String entry = compMethod.getSymbolName();
88 assert entry != null : "missing name for compiled method";
89
90 // Align and pad method entry
91 CodeContainer codeSection = binaryContainer.getCodeContainer();
92 int codeIdOffset = binaryContainer.alignUp(codeSection, binaryContainer.getCodeSegmentSize());
93 // Store CodeId into code. It will be use by find_aot() using code.segments
94 methodInfo.setCodeId();
95 binaryContainer.appendIntToCode(methodInfo.getCodeId());
96 int textBaseOffset = binaryContainer.alignUp(codeSection, binaryContainer.getCodeEntryAlignment());
97
98 codeSection.createSymbol(textBaseOffset, Symbol.Kind.JAVA_FUNCTION, Symbol.Binding.LOCAL, targetCodeSize, entry);
99
100 // Set the offset at which the text section of this method would be layed out
101 methodInfo.setTextSectionOffset(textBaseOffset);
102
103 // Write code bytes of the current method into byte stream
104 binaryContainer.appendCodeBytes(targetCode, 0, targetCodeSize);
105 int currentStubOffset = binaryContainer.alignUp(codeSection, 8);
106 // Set the offset at which stubs of this method would be laid out
107 methodInfo.setStubsOffset(currentStubOffset - textBaseOffset);
108 // step through all calls, for every call, add a stub
109 for (Infopoint infopoint : compResult.getInfopoints()) {
110 if (infopoint.reason == InfopointReason.CALL) {
111 final Call callInfopoint = (Call) infopoint;
112 if (callInfopoint.target instanceof ResolvedJavaMethod) {
113 ResolvedJavaMethod call = (ResolvedJavaMethod) callInfopoint.target;
114 StubInformation stub = addCallStub(MiscUtils.isVirtualCall(methodInfo, callInfopoint));
115 // Get the targetSymbol. A symbol for this will be created later during plt
116 // creation
117 String targetSymbol = MiscUtils.uniqueMethodName(call) + ".at." + infopoint.pcOffset;
118 methodInfo.addStubCode(targetSymbol, stub);
119 currentStubOffset += stub.getSize();
120 }
121 }
122 }
123 assert currentStubOffset == codeSection.getByteStreamSize() : "wrong offset";
124 binaryContainer.addCodeSegments(codeIdOffset, currentStubOffset);
125 }
126 }
127
128 private StubInformation addCallStub(boolean isVirtualCall) {
129 final int startOffset = binaryContainer.getCodeContainer().getByteStreamSize();
130 StubInformation stub = new StubInformation(startOffset, isVirtualCall);
131 ELFMacroAssembler masm = ELFMacroAssembler.getELFMacroAssembler(target);
132 byte[] code;
133 if (isVirtualCall) {
134 code = masm.getPLTVirtualEntryCode(stub);
135 } else {
136 code = masm.getPLTStaticEntryCode(stub);
137 }
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1 /*
2 * Copyright (c) 2016, 2017, 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 package jdk.tools.jaotc;
25
26 import java.util.ArrayList;
27
28 import jdk.tools.jaotc.binformat.BinaryContainer;
29 import jdk.tools.jaotc.binformat.CodeContainer;
30 import jdk.tools.jaotc.binformat.Symbol;
31 import jdk.tools.jaotc.StubInformation;
32 import org.graalvm.compiler.code.CompilationResult;
33 import org.graalvm.compiler.hotspot.HotSpotForeignCallLinkage;
34
35 import jdk.vm.ci.code.TargetDescription;
36 import jdk.vm.ci.code.site.Call;
37 import jdk.vm.ci.code.site.Infopoint;
38 import jdk.vm.ci.code.site.InfopointReason;
39 import jdk.vm.ci.meta.ResolvedJavaMethod;
40
41 final class CodeSectionProcessor {
42
43 private final TargetDescription target;
44
45 private final BinaryContainer binaryContainer;
46
47 CodeSectionProcessor(DataBuilder dataBuilder) {
48 this.target = dataBuilder.getBackend().getTarget();
49 this.binaryContainer = dataBuilder.getBinaryContainer();
50 }
51
52 /**
53 * Method that looks at code section of a compiled result {@code compClass} and records function
54 * entry point symbols along with the text section contents. Note that the text section contents
55 * are not yet ready to be written in the form of a binary text section since the contents may
56 * need to be patched with references to other sections.
57 *
58 * @param compClass Graal compilation result.
59 */
60 void process(AOTCompiledClass compClass) {
61 ArrayList<CompiledMethodInfo> compiledMethods = compClass.getCompiledMethods();
72 for (Infopoint infopoint : compResult.getInfopoints()) {
73 if (infopoint.reason == InfopointReason.CALL) {
74 final Call callInfopoint = (Call) infopoint;
75 if (callInfopoint.target instanceof HotSpotForeignCallLinkage) {
76 // TODO 4 is x86 size of relative displacement.
77 // For SPARC need something different.
78 int destOffset = infopoint.pcOffset + callInfopoint.size - 4;
79 targetCode[destOffset + 0] = 0;
80 targetCode[destOffset + 1] = 0;
81 targetCode[destOffset + 2] = 0;
82 targetCode[destOffset + 3] = 0;
83 }
84 }
85 }
86
87 String entry = compMethod.getSymbolName();
88 assert entry != null : "missing name for compiled method";
89
90 // Align and pad method entry
91 CodeContainer codeSection = binaryContainer.getCodeContainer();
92 int codeIdOffset = BinaryContainer.alignUp(codeSection, binaryContainer.getCodeSegmentSize());
93 // Store CodeId into code. It will be use by find_aot() using code.segments
94 methodInfo.setCodeId();
95 binaryContainer.appendIntToCode(methodInfo.getCodeId());
96 int textBaseOffset = BinaryContainer.alignUp(codeSection, binaryContainer.getCodeEntryAlignment());
97
98 codeSection.createSymbol(textBaseOffset, Symbol.Kind.JAVA_FUNCTION, Symbol.Binding.LOCAL, targetCodeSize, entry);
99
100 // Set the offset at which the text section of this method would be layed out
101 methodInfo.setTextSectionOffset(textBaseOffset);
102
103 // Write code bytes of the current method into byte stream
104 binaryContainer.appendCodeBytes(targetCode, 0, targetCodeSize);
105 int currentStubOffset = BinaryContainer.alignUp(codeSection, 8);
106 // Set the offset at which stubs of this method would be laid out
107 methodInfo.setStubsOffset(currentStubOffset - textBaseOffset);
108 // step through all calls, for every call, add a stub
109 for (Infopoint infopoint : compResult.getInfopoints()) {
110 if (infopoint.reason == InfopointReason.CALL) {
111 final Call callInfopoint = (Call) infopoint;
112 if (callInfopoint.target instanceof ResolvedJavaMethod) {
113 ResolvedJavaMethod call = (ResolvedJavaMethod) callInfopoint.target;
114 StubInformation stub = addCallStub(CallInfo.isVirtualCall(methodInfo, callInfopoint));
115 // Get the targetSymbol. A symbol for this will be created later during plt
116 // creation
117 String targetSymbol = JavaMethodInfo.uniqueMethodName(call) + ".at." + infopoint.pcOffset;
118 methodInfo.addStubCode(targetSymbol, stub);
119 currentStubOffset += stub.getSize();
120 }
121 }
122 }
123 assert currentStubOffset == codeSection.getByteStreamSize() : "wrong offset";
124 binaryContainer.addCodeSegments(codeIdOffset, currentStubOffset);
125 }
126 }
127
128 private StubInformation addCallStub(boolean isVirtualCall) {
129 final int startOffset = binaryContainer.getCodeContainer().getByteStreamSize();
130 StubInformation stub = new StubInformation(startOffset, isVirtualCall);
131 ELFMacroAssembler masm = ELFMacroAssembler.getELFMacroAssembler(target);
132 byte[] code;
133 if (isVirtualCall) {
134 code = masm.getPLTVirtualEntryCode(stub);
135 } else {
136 code = masm.getPLTStaticEntryCode(stub);
137 }
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