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SubstrateVM image builder components
/*
* Copyright (c) 2013, 2019, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation. Oracle designates this
* particular file as subject to the "Classpath" exception as provided
* by Oracle in the LICENSE file that accompanied this code.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
package com.oracle.svm.hosted.image;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.nio.file.Files;
import java.nio.file.Path;
import java.util.ArrayList;
import java.util.List;
import java.util.Map.Entry;
import java.util.function.Function;
import org.graalvm.compiler.debug.DebugContext;
import org.graalvm.compiler.debug.Indent;
import org.graalvm.nativeimage.Platform;
import org.graalvm.nativeimage.impl.InternalPlatform;
import com.oracle.objectfile.ObjectFile;
import com.oracle.svm.core.LinkerInvocation;
import com.oracle.svm.core.OS;
import com.oracle.svm.core.SubstrateOptions;
import com.oracle.svm.core.option.OptionUtils;
import com.oracle.svm.core.util.UserError;
import com.oracle.svm.core.util.VMError;
import com.oracle.svm.hosted.FeatureImpl.BeforeImageWriteAccessImpl;
import com.oracle.svm.hosted.NativeImageOptions;
import com.oracle.svm.hosted.c.NativeLibraries;
import com.oracle.svm.hosted.c.util.FileUtils;
import com.oracle.svm.hosted.meta.HostedMetaAccess;
import com.oracle.svm.hosted.meta.HostedMethod;
import com.oracle.svm.hosted.meta.HostedUniverse;
import jdk.vm.ci.meta.ResolvedJavaMethod;
public abstract class NativeBootImageViaCC extends NativeBootImage {
protected final HostedMethod mainEntryPoint;
public NativeBootImageViaCC(NativeImageKind k, HostedUniverse universe, HostedMetaAccess metaAccess, NativeLibraries nativeLibs, NativeImageHeap heap, NativeImageCodeCache codeCache,
List entryPoints, HostedMethod mainEntryPoint, ClassLoader imageClassLoader) {
super(k, universe, metaAccess, nativeLibs, heap, codeCache, entryPoints, mainEntryPoint, imageClassLoader);
this.mainEntryPoint = mainEntryPoint;
}
public NativeImageKind getOutputKind() {
return kind;
}
class BinutilsCCLinkerInvocation extends CCLinkerInvocation {
BinutilsCCLinkerInvocation() {
additionalPreOptions.add("-z");
additionalPreOptions.add("noexecstack");
if (SubstrateOptions.RemoveUnusedSymbols.getValue()) {
/* Perform garbage collection of unused input sections. */
additionalPreOptions.add("-Wl,--gc-sections");
}
if (SubstrateOptions.DeleteLocalSymbols.getValue()) {
additionalPreOptions.add("-Wl,-x");
}
}
@Override
protected void addOneSymbolAliasOption(List cmd, Entry ent) {
cmd.add("-Wl,--defsym");
cmd.add("-Wl," + ent.getValue() + "=" + NativeBootImage.globalSymbolNameForMethod(ent.getKey()));
}
@Override
protected void setOutputKind(List cmd) {
switch (kind) {
case EXECUTABLE:
break;
case STATIC_EXECUTABLE:
cmd.add("-static");
break;
case SHARED_LIBRARY:
cmd.add("-shared");
break;
default:
VMError.shouldNotReachHere();
}
}
}
class DarwinCCLinkerInvocation extends CCLinkerInvocation {
DarwinCCLinkerInvocation() {
if (SubstrateOptions.RemoveUnusedSymbols.getValue()) {
/* Remove functions and data unreachable by entry points. */
additionalPreOptions.add("-Wl,-dead_strip");
}
if (SubstrateOptions.DeleteLocalSymbols.getValue()) {
additionalPreOptions.add("-Wl,-x");
}
}
@Override
protected void addOneSymbolAliasOption(List cmd, Entry ent) {
cmd.add("-Wl,-alias,_" + NativeBootImage.globalSymbolNameForMethod(ent.getKey()) + ",_" + ent.getValue());
}
@Override
protected void setOutputKind(List cmd) {
switch (kind) {
case STATIC_EXECUTABLE:
throw UserError.abort(OS.getCurrent().name() + " does not support building static executable images.");
case SHARED_LIBRARY:
cmd.add("-shared");
if (Platform.includedIn(InternalPlatform.DARWIN_AND_JNI.class)) {
cmd.add("-undefined");
cmd.add("dynamic_lookup");
}
break;
}
}
}
class WindowsCCLinkerInvocation extends CCLinkerInvocation {
WindowsCCLinkerInvocation() {
setCompilerCommand("CL");
}
@Override
protected void addOneSymbolAliasOption(List cmd, Entry ent) {
// cmd.add("-Wl,-alias," + ent.getValue() + "," + ent.getKey());
}
@Override
protected void setOutputKind(List cmd) {
switch (kind) {
case EXECUTABLE:
case STATIC_EXECUTABLE:
// cmd.add("/MT");
// Must use /MD in order to link with JDK native libraries built that way
cmd.add("/MD");
break;
case SHARED_LIBRARY:
cmd.add("/MD");
cmd.add("/LD");
break;
default:
VMError.shouldNotReachHere();
}
}
@Override
public List getCommand() {
ArrayList cmd = new ArrayList<>();
cmd.add(compilerCommand);
setOutputKind(cmd);
// Add debugging info
cmd.add("/Zi");
if (SubstrateOptions.RemoveUnusedSymbols.getValue()) {
additionalPreOptions.add("/OPT:REF");
}
if (SubstrateOptions.DeleteLocalSymbols.getValue()) {
cmd.add("/PDBSTRIPPED");
}
cmd.add("/Fe" + outputFile.toString());
cmd.addAll(inputFilenames);
for (Path staticLibrary : nativeLibs.getStaticLibraries()) {
cmd.add(staticLibrary.toString());
}
cmd.add("/link /INCREMENTAL:NO /NODEFAULTLIB:LIBCMT /NODEFAULTLIB:OLDNAMES");
// Add clibrary paths to command
for (String libraryPath : nativeLibs.getLibraryPaths()) {
cmd.add("/LIBPATH:" + libraryPath);
}
for (String library : nativeLibs.getLibraries()) {
cmd.add(library + ".lib");
}
// Add required Windows Libraries
cmd.add("advapi32.lib");
cmd.add("ws2_32.lib");
cmd.add("secur32.lib");
cmd.add("iphlpapi.lib");
return cmd;
}
}
LinkerInvocation getLinkerInvocation(Path outputDirectory, Path tempDirectory, String imageName) {
CCLinkerInvocation inv;
switch (ObjectFile.getNativeFormat()) {
case MACH_O:
inv = new DarwinCCLinkerInvocation();
break;
case PECOFF:
inv = new WindowsCCLinkerInvocation();
break;
case ELF:
default:
inv = new BinutilsCCLinkerInvocation();
break;
}
Path outputFile = outputDirectory.resolve(imageName + getBootImageKind().getFilenameSuffix());
UserError.guarantee(!Files.isDirectory(outputFile), "Cannot write image to %s. Path exists as directory. (Use -H:Name=)", outputFile);
inv.setOutputFile(outputFile);
inv.setOutputKind(getOutputKind());
inv.addLibPath(tempDirectory.toString());
for (String libraryPath : nativeLibs.getLibraryPaths()) {
inv.addLibPath(libraryPath);
}
for (String rPath : OptionUtils.flatten(",", SubstrateOptions.LinkerRPath.getValue())) {
inv.addRPath(rPath);
}
for (String library : nativeLibs.getLibraries()) {
inv.addLinkedLibrary(library);
}
for (String filename : codeCache.getCCInputFiles(tempDirectory, imageName)) {
inv.addInputFile(filename);
}
for (Path staticLibraryPath : nativeLibs.getStaticLibraries()) {
inv.addInputFile(staticLibraryPath.toString());
}
addMainEntryPoint(inv);
return inv;
}
protected void addMainEntryPoint(CCLinkerInvocation inv) {
if (mainEntryPoint != null) {
inv.addSymbolAlias(mainEntryPoint, "main");
}
}
@Override
@SuppressWarnings("try")
public LinkerInvocation write(DebugContext debug, Path outputDirectory, Path tempDirectory, String imageName, BeforeImageWriteAccessImpl config) {
String cmdstr = "";
String outputstr = "";
try (Indent indent = debug.logAndIndent("Writing native image")) {
// 1. write the relocatable file
// Since we're using FileChannel.map, and we can't unmap the file,
// we have to copy the file or the linker will fail to open it.
if (OS.getCurrent() == OS.WINDOWS) {
Path tempFile = tempDirectory.resolve(imageName + ".tmp");
write(tempFile);
try {
Files.copy(tempFile, tempDirectory.resolve(imageName + ObjectFile.getFilenameSuffix()));
// Files.delete(tempFile);
} catch (IOException e) {
throw new RuntimeException("Failed to create Object file " + e);
}
} else {
write(tempDirectory.resolve(imageName + ObjectFile.getFilenameSuffix()));
}
// 2. run a command to make an executable of it
int status;
try {
/*
* To support automated stub generation, we first search for a libsvm.a in the
* images directory. FIXME: make this a per-image directory, to avoid clobbering on
* multiple runs. It actually doesn't matter, because it's a .a file which will get
* absorbed into the executable, but avoiding clobbering will help debugging.
*/
LinkerInvocation inv = getLinkerInvocation(outputDirectory, tempDirectory, imageName);
for (Function fn : config.getLinkerInvocationTransformers()) {
inv = fn.apply(inv);
}
List cmd = inv.getCommand();
StringBuilder sb = new StringBuilder("Running command:");
for (String s : cmd) {
sb.append(' ');
sb.append(s);
}
cmdstr = sb.toString();
try (DebugContext.Scope s = debug.scope("InvokeCC")) {
debug.log("%s", sb);
if (NativeImageOptions.MachODebugInfoTesting.getValue()) {
System.out.printf("Testing Mach-O debuginfo generation - SKIP %s%n", cmdstr);
} else {
ProcessBuilder pb = new ProcessBuilder().command(cmd);
pb.directory(tempDirectory.toFile());
pb.redirectErrorStream(true);
Process p = pb.start();
ByteArrayOutputStream output = new ByteArrayOutputStream();
FileUtils.drainInputStream(p.getInputStream(), output);
status = p.waitFor();
outputstr = output.toString();
debug.log("%s", output);
if (status != 0) {
throw new RuntimeException("returned " + status);
}
}
}
return inv;
} catch (Exception ex) {
throw new RuntimeException("host C compiler or linker does not seem to work: " + ex.toString() + "\n\n" + cmdstr + "\n\n" + outputstr);
}
}
}
}
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