package jdk.tools.jaotc.binformat;
import static org.graalvm.compiler.hotspot.meta.HotSpotAOTProfilingPlugin.Options.TieredAOT;
import java.io.ByteArrayOutputStream;
import java.io.DataOutputStream;
import java.io.IOException;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import jdk.tools.jaotc.binformat.Symbol.Binding;
import jdk.tools.jaotc.binformat.Symbol.Kind;
import jdk.tools.jaotc.binformat.elf.JELFRelocObject;
import org.graalvm.compiler.hotspot.GraalHotSpotVMConfig;
import org.graalvm.compiler.nodes.graphbuilderconf.GraphBuilderConfiguration;
public class BinaryContainer implements SymbolTable {
private final int codeSegmentSize;
private final int codeEntryAlignment;
private final CodeContainer codeContainer;
private final CodeContainer extLinkageContainer;
private final ByteContainer extLinkageGOTContainer;
private final ByteContainer metaspaceGotContainer;
private final ByteContainer metadataGotContainer;
private final ByteContainer methodStateContainer;
private final ByteContainer oopGotContainer;
private final ReadOnlyDataContainer configContainer;
private final ReadOnlyDataContainer metaspaceNamesContainer;
private final ReadOnlyDataContainer methodsOffsetsContainer;
private final ReadOnlyDataContainer klassesOffsetsContainer;
private final ReadOnlyDataContainer klassesDependenciesContainer;
private final HeaderContainer ;
private final ReadOnlyDataContainer stubsOffsetsContainer;
private final ReadOnlyDataContainer codeSegmentsContainer;
private final ReadOnlyDataContainer methodMetadataContainer;
private final ReadOnlyDataContainer constantDataContainer;
private final Map<String, Integer> offsetStringTable = new HashMap<>();
private final Map<String, Integer> metaspaceNames = new HashMap<>();
private final Map<String, Symbol> symbolTable = new HashMap<>();
private final Map<Symbol, List<Relocation>> relocationTable = new HashMap<>();
private final Map<Symbol, Relocation> uniqueRelocationTable = new HashMap<>();
private static final HashMap<String, String> functionNamesToAOTSymbols = new HashMap<>();
private static final String[][] map = {
{"CompilerToVM::Data::SharedRuntime_deopt_blob_unpack", "_aot_deopt_blob_unpack"},
{"CompilerToVM::Data::SharedRuntime_deopt_blob_uncommon_trap", "_aot_deopt_blob_uncommon_trap"},
{"CompilerToVM::Data::SharedRuntime_ic_miss_stub", "_aot_ic_miss_stub"},
{"CompilerToVM::Data::SharedRuntime_handle_wrong_method_stub", "_aot_handle_wrong_method_stub"},
{"SharedRuntime::exception_handler_for_return_address", "_aot_exception_handler_for_return_address"},
{"SharedRuntime::register_finalizer", "_aot_register_finalizer"},
{"SharedRuntime::OSR_migration_end", "_aot_OSR_migration_end"},
{"CompilerRuntime::resolve_string_by_symbol", "_aot_resolve_string_by_symbol"},
{"CompilerRuntime::resolve_klass_by_symbol", "_aot_resolve_klass_by_symbol"},
{"CompilerRuntime::resolve_method_by_symbol_and_load_counters","_aot_resolve_method_by_symbol_and_load_counters"},
{"CompilerRuntime::initialize_klass_by_symbol", "_aot_initialize_klass_by_symbol"},
{"CompilerRuntime::invocation_event", "_aot_invocation_event"},
{"CompilerRuntime::backedge_event", "_aot_backedge_event"},
{"CompilerToVM::Data::dpow", "_aot_shared_runtime_dpow"},
{"CompilerToVM::Data::dexp", "_aot_shared_runtime_dexp"},
{"CompilerToVM::Data::dcos", "_aot_shared_runtime_dcos"},
{"CompilerToVM::Data::dsin", "_aot_shared_runtime_dsin"},
{"CompilerToVM::Data::dtan", "_aot_shared_runtime_dtan"},
{"CompilerToVM::Data::dlog", "_aot_shared_runtime_dlog"},
{"CompilerToVM::Data::dlog10", "_aot_shared_runtime_dlog10"},
{"StubRoutines::_jbyte_arraycopy", "_aot_stub_routines_jbyte_arraycopy"},
{"StubRoutines::_jshort_arraycopy", "_aot_stub_routines_jshort_arraycopy"},
{"StubRoutines::_jint_arraycopy", "_aot_stub_routines_jint_arraycopy"},
{"StubRoutines::_jlong_arraycopy", "_aot_stub_routines_jlong_arraycopy"},
{"StubRoutines::_oop_arraycopy", "_aot_stub_routines_oop_arraycopy"},
{"StubRoutines::_oop_arraycopy_uninit", "_aot_stub_routines_oop_arraycopy_uninit"},
{"StubRoutines::_jbyte_disjoint_arraycopy", "_aot_stub_routines_jbyte_disjoint_arraycopy"},
{"StubRoutines::_jshort_disjoint_arraycopy", "_aot_stub_routines_jshort_disjoint_arraycopy"},
{"StubRoutines::_jint_disjoint_arraycopy", "_aot_stub_routines_jint_disjoint_arraycopy"},
{"StubRoutines::_jlong_disjoint_arraycopy", "_aot_stub_routines_jlong_disjoint_arraycopy"},
{"StubRoutines::_oop_disjoint_arraycopy", "_aot_stub_routines_oop_disjoint_arraycopy"},
{"StubRoutines::_oop_disjoint_arraycopy_uninit", "_aot_stub_routines_oop_disjoint_arraycopy_uninit"},
{"StubRoutines::_arrayof_jbyte_arraycopy", "_aot_stub_routines_arrayof_jbyte_arraycopy"},
{"StubRoutines::_arrayof_jshort_arraycopy", "_aot_stub_routines_arrayof_jshort_arraycopy"},
{"StubRoutines::_arrayof_jint_arraycopy", "_aot_stub_routines_arrayof_jint_arraycopy"},
{"StubRoutines::_arrayof_jlong_arraycopy", "_aot_stub_routines_arrayof_jlong_arraycopy"},
{"StubRoutines::_arrayof_oop_arraycopy", "_aot_stub_routines_arrayof_oop_arraycopy"},
{"StubRoutines::_arrayof_oop_arraycopy_uninit", "_aot_stub_routines_arrayof_oop_arraycopy_uninit"},
{"StubRoutines::_arrayof_jbyte_disjoint_arraycopy", "_aot_stub_routines_arrayof_jbyte_disjoint_arraycopy"},
{"StubRoutines::_arrayof_jshort_disjoint_arraycopy", "_aot_stub_routines_arrayof_jshort_disjoint_arraycopy"},
{"StubRoutines::_arrayof_jint_disjoint_arraycopy", "_aot_stub_routines_arrayof_jint_disjoint_arraycopy"},
{"StubRoutines::_arrayof_jlong_disjoint_arraycopy", "_aot_stub_routines_arrayof_jlong_disjoint_arraycopy"},
{"StubRoutines::_arrayof_oop_disjoint_arraycopy", "_aot_stub_routines_arrayof_oop_disjoint_arraycopy"},
{"StubRoutines::_arrayof_oop_disjoint_arraycopy_uninit", "_aot_stub_routines_arrayof_oop_disjoint_arraycopy_uninit"},
{"StubRoutines::_checkcast_arraycopy", "_aot_stub_routines_checkcast_arraycopy"},
{"StubRoutines::_aescrypt_encryptBlock", "_aot_stub_routines_aescrypt_encryptBlock"},
{"StubRoutines::_aescrypt_decryptBlock", "_aot_stub_routines_aescrypt_decryptBlock"},
{"StubRoutines::_cipherBlockChaining_encryptAESCrypt", "_aot_stub_routines_cipherBlockChaining_encryptAESCrypt"},
{"StubRoutines::_cipherBlockChaining_decryptAESCrypt", "_aot_stub_routines_cipherBlockChaining_decryptAESCrypt"},
{"StubRoutines::_updateBytesCRC32", "_aot_stub_routines_update_bytes_crc32"},
{"StubRoutines::_crc_table_adr", "_aot_stub_routines_crc_table_adr"},
{"StubRoutines::_sha1_implCompress", "_aot_stub_routines_sha1_implCompress" },
{"StubRoutines::_sha1_implCompressMB", "_aot_stub_routines_sha1_implCompressMB" },
{"StubRoutines::_sha256_implCompress", "_aot_stub_routines_sha256_implCompress" },
{"StubRoutines::_sha256_implCompressMB", "_aot_stub_routines_sha256_implCompressMB" },
{"StubRoutines::_sha512_implCompress", "_aot_stub_routines_sha512_implCompress" },
{"StubRoutines::_sha512_implCompressMB", "_aot_stub_routines_sha512_implCompressMB" },
{"StubRoutines::_multiplyToLen", "_aot_stub_routines_multiplyToLen" },
{"StubRoutines::_counterMode_AESCrypt", "_aot_stub_routines_counterMode_AESCrypt" },
{"StubRoutines::_ghash_processBlocks", "_aot_stub_routines_ghash_processBlocks" },
{"StubRoutines::_crc32c_table_addr", "_aot_stub_routines_crc32c_table_addr" },
{"StubRoutines::_updateBytesCRC32C", "_aot_stub_routines_updateBytesCRC32C" },
{"StubRoutines::_updateBytesAdler32", "_aot_stub_routines_updateBytesAdler32" },
{"StubRoutines::_squareToLen", "_aot_stub_routines_squareToLen" },
{"StubRoutines::_mulAdd", "_aot_stub_routines_mulAdd" },
{"StubRoutines::_montgomeryMultiply", "_aot_stub_routines_montgomeryMultiply" },
{"StubRoutines::_montgomerySquare", "_aot_stub_routines_montgomerySquare" },
{"StubRoutines::_vectorizedMismatch", "_aot_stub_routines_vectorizedMismatch" },
{"StubRoutines::_throw_delayed_StackOverflowError_entry", "_aot_stub_routines_throw_delayed_StackOverflowError_entry" },
{"os::javaTimeMillis", "_aot_os_javaTimeMillis"},
{"os::javaTimeNanos", "_aot_os_javaTimeNanos"},
{"JVMCIRuntime::monitorenter", "_aot_jvmci_runtime_monitorenter"},
{"JVMCIRuntime::monitorexit", "_aot_jvmci_runtime_monitorexit"},
{"JVMCIRuntime::log_object", "_aot_jvmci_runtime_log_object"},
{"JVMCIRuntime::log_printf", "_aot_jvmci_runtime_log_printf"},
{"JVMCIRuntime::vm_message", "_aot_jvmci_runtime_vm_message"},
{"JVMCIRuntime::new_instance", "_aot_jvmci_runtime_new_instance"},
{"JVMCIRuntime::log_primitive", "_aot_jvmci_runtime_log_primitive"},
{"JVMCIRuntime::new_multi_array", "_aot_jvmci_runtime_new_multi_array"},
{"JVMCIRuntime::validate_object", "_aot_jvmci_runtime_validate_object"},
{"JVMCIRuntime::dynamic_new_array", "_aot_jvmci_runtime_dynamic_new_array"},
{"JVMCIRuntime::write_barrier_pre", "_aot_jvmci_runtime_write_barrier_pre"},
{"JVMCIRuntime::identity_hash_code", "_aot_jvmci_runtime_identity_hash_code"},
{"JVMCIRuntime::write_barrier_post", "_aot_jvmci_runtime_write_barrier_post"},
{"JVMCIRuntime::dynamic_new_instance", "_aot_jvmci_runtime_dynamic_new_instance"},
{"JVMCIRuntime::thread_is_interrupted", "_aot_jvmci_runtime_thread_is_interrupted"},
{"JVMCIRuntime::exception_handler_for_pc", "_aot_jvmci_runtime_exception_handler_for_pc"},
{"JVMCIRuntime::test_deoptimize_call_int", "_aot_jvmci_runtime_test_deoptimize_call_int"},
{"JVMCIRuntime::throw_and_post_jvmti_exception", "_aot_jvmci_runtime_throw_and_post_jvmti_exception"},
{"JVMCIRuntime::throw_klass_external_name_exception", "_aot_jvmci_runtime_throw_klass_external_name_exception"},
{"JVMCIRuntime::throw_class_cast_exception", "_aot_jvmci_runtime_throw_class_cast_exception"},
{"JVMCIRuntime::vm_error", "_aot_jvmci_runtime_vm_error"},
{"JVMCIRuntime::new_array", "_aot_jvmci_runtime_new_array"}
};
static {
for (String[] entry : map) {
functionNamesToAOTSymbols.put(entry[0], entry[1]);
}
}
public BinaryContainer(GraalHotSpotVMConfig graalHotSpotVMConfig, GraphBuilderConfiguration graphBuilderConfig, String jvmVersion) {
this.codeSegmentSize = graalHotSpotVMConfig.codeSegmentSize;
this.codeEntryAlignment = graalHotSpotVMConfig.codeEntryAlignment;
codeContainer = new CodeContainer(".text", this);
extLinkageContainer = new CodeContainer(".hotspot.linkage.plt", this);
configContainer = new ReadOnlyDataContainer(".config", this);
metaspaceNamesContainer = new ReadOnlyDataContainer(".metaspace.names", this);
methodsOffsetsContainer = new ReadOnlyDataContainer(".methods.offsets", this);
klassesOffsetsContainer = new ReadOnlyDataContainer(".klasses.offsets", this);
klassesDependenciesContainer = new ReadOnlyDataContainer(".klasses.dependencies", this);
headerContainer = new HeaderContainer(jvmVersion, new ReadOnlyDataContainer(".header", this));
stubsOffsetsContainer = new ReadOnlyDataContainer(".stubs.offsets", this);
codeSegmentsContainer = new ReadOnlyDataContainer(".code.segments", this);
constantDataContainer = new ReadOnlyDataContainer(".method.constdata", this);
methodMetadataContainer = new ReadOnlyDataContainer(".method.metadata", this);
metaspaceGotContainer = new ByteContainer(".metaspace.got", this);
metadataGotContainer = new ByteContainer(".metadata.got", this);
methodStateContainer = new ByteContainer(".method.state", this);
oopGotContainer = new ByteContainer(".oop.got", this);
extLinkageGOTContainer = new ByteContainer(".hotspot.linkage.got", this);
addGlobalSymbols();
recordConfiguration(graalHotSpotVMConfig, graphBuilderConfig);
}
private void recordConfiguration(GraalHotSpotVMConfig graalHotSpotVMConfig, GraphBuilderConfiguration graphBuilderConfig) {
boolean[] booleanFlags = { graalHotSpotVMConfig.cAssertions,
graalHotSpotVMConfig.useCompressedOops,
graalHotSpotVMConfig.useCompressedClassPointers,
graalHotSpotVMConfig.compactFields,
graalHotSpotVMConfig.useG1GC,
graalHotSpotVMConfig.useCMSGC,
graalHotSpotVMConfig.useTLAB,
graalHotSpotVMConfig.useBiasedLocking,
TieredAOT.getValue(),
graalHotSpotVMConfig.enableContended,
graalHotSpotVMConfig.restrictContended,
graphBuilderConfig.omitAssertions()
};
int[] intFlags = { graalHotSpotVMConfig.getOopEncoding().shift,
graalHotSpotVMConfig.getKlassEncoding().shift,
graalHotSpotVMConfig.contendedPaddingWidth,
graalHotSpotVMConfig.fieldsAllocationStyle,
1 << graalHotSpotVMConfig.getOopEncoding().alignment,
graalHotSpotVMConfig.codeSegmentSize,
};
byte[] booleanFlagsAsBytes = flagsToByteArray(booleanFlags);
int size0 = configContainer.getByteStreamSize();
int computedSize = booleanFlagsAsBytes.length * Byte.BYTES +
intFlags.length * Integer.BYTES +
Integer.BYTES;
configContainer.appendInt(computedSize).
appendInts(intFlags).
appendBytes(booleanFlagsAsBytes);
int size = configContainer.getByteStreamSize() - size0;
assert size == computedSize;
}
private static byte[] flagsToByteArray(boolean[] flags) {
byte[] byteArray = new byte[flags.length];
for (int i = 0; i < flags.length; ++i) {
byteArray[i] = boolToByte(flags[i]);
}
return byteArray;
}
private static byte boolToByte(boolean flag) {
return (byte) (flag ? 1 : 0);
}
public void freeMemory() {
offsetStringTable.clear();
metaspaceNames.clear();
}
public String getCardTableAddressSymbolName() {
return "_aot_card_table_address";
}
public String getHeapTopAddressSymbolName() {
return "_aot_heap_top_address";
}
public String getHeapEndAddressSymbolName() {
return "_aot_heap_end_address";
}
public String getCrcTableAddressSymbolName() {
return "_aot_stub_routines_crc_table_adr";
}
public String getPollingPageSymbolName() {
return "_aot_polling_page";
}
public String getResolveStaticEntrySymbolName() {
return "_resolve_static_entry";
}
public String getResolveVirtualEntrySymbolName() {
return "_resolve_virtual_entry";
}
public String getResolveOptVirtualEntrySymbolName() {
return "_resolve_opt_virtual_entry";
}
public String getNarrowKlassBaseAddressSymbolName() {
return "_aot_narrow_klass_base_address";
}
public String getNarrowOopBaseAddressSymbolName() {
return "_aot_narrow_oop_base_address";
}
public String getLogOfHeapRegionGrainBytesSymbolName() {
return "_aot_log_of_heap_region_grain_bytes";
}
public String getInlineContiguousAllocationSupportedSymbolName() {
return "_aot_inline_contiguous_allocation_supported";
}
public int getCodeSegmentSize() {
return codeSegmentSize;
}
public int getCodeEntryAlignment() {
return codeEntryAlignment;
}
public String getAOTSymbolForVMFunctionName(String functionName) {
return functionNamesToAOTSymbols.get(functionName);
}
private void addGlobalSymbols() {
createContainerSymbol(codeContainer);
createContainerSymbol(configContainer);
createContainerSymbol(methodsOffsetsContainer);
createContainerSymbol(klassesOffsetsContainer);
createContainerSymbol(klassesDependenciesContainer);
createContainerSymbol(metaspaceGotContainer);
createContainerSymbol(metadataGotContainer);
createContainerSymbol(methodStateContainer);
createContainerSymbol(oopGotContainer);
createContainerSymbol(metaspaceNamesContainer);
createContainerSymbol(methodMetadataContainer);
createContainerSymbol(stubsOffsetsContainer);
createContainerSymbol(headerContainer.getContainer());
createContainerSymbol(codeSegmentsContainer);
createGotSymbol(getResolveStaticEntrySymbolName());
createGotSymbol(getResolveVirtualEntrySymbolName());
createGotSymbol(getResolveOptVirtualEntrySymbolName());
createGotSymbol(getCardTableAddressSymbolName());
createGotSymbol(getHeapTopAddressSymbolName());
createGotSymbol(getHeapEndAddressSymbolName());
createGotSymbol(getNarrowKlassBaseAddressSymbolName());
createGotSymbol(getNarrowOopBaseAddressSymbolName());
createGotSymbol(getPollingPageSymbolName());
createGotSymbol(getLogOfHeapRegionGrainBytesSymbolName());
createGotSymbol(getInlineContiguousAllocationSupportedSymbolName());
for (HashMap.Entry<String, String> entry : functionNamesToAOTSymbols.entrySet()) {
createGotSymbol(entry.getValue());
}
}
private static void createContainerSymbol(ByteContainer container) {
container.createSymbol(0, Kind.OBJECT, Binding.GLOBAL, 0, "JVM" + container.getContainerName());
}
private void createGotSymbol(String name) {
String s = "got." + name;
Symbol gotSymbol = extLinkageGOTContainer.createGotSymbol(s);
extLinkageGOTContainer.createSymbol(gotSymbol.getOffset(), Kind.OBJECT, Binding.GLOBAL, 8, name);
}
public void createBinary(String outputFileName, String aotVersion) throws IOException {
String osName = System.getProperty("os.name");
switch (osName) {
case "Linux":
case "SunOS":
JELFRelocObject elfso = new JELFRelocObject(this, outputFileName, aotVersion);
elfso.createELFRelocObject(relocationTable, symbolTable.values());
break;
default:
throw new InternalError("Unsupported platform: " + osName);
}
}
public void addSymbol(Symbol symInfo) {
if (symInfo.getName().startsWith("got.") && !(symInfo instanceof GotSymbol)) {
throw new InternalError("adding got. without being GotSymbol");
}
if (symbolTable.containsKey(symInfo.getName())) {
throw new InternalError("Symbol: " + symInfo.getName() + " already exists in SymbolTable");
} else {
symbolTable.put(symInfo.getName(), symInfo);
}
}
public boolean addStringOffset(String name, Integer offset) {
offsetStringTable.put(name, offset);
return true;
}
public void addRelocation(Relocation info) {
if (relocationTable.containsKey(info.getSymbol())) {
relocationTable.get(info.getSymbol()).add(info);
} else if (uniqueRelocationTable.containsKey(info.getSymbol())) {
ArrayList<Relocation> list = new ArrayList<>(2);
list.add(uniqueRelocationTable.get(info.getSymbol()));
list.add(info);
relocationTable.put(info.getSymbol(), list);
uniqueRelocationTable.remove(info.getSymbol());
} else {
uniqueRelocationTable.put(info.getSymbol(), info);
}
}
@Override
public Symbol getSymbol(String symName) {
return symbolTable.get(symName);
}
@Override
public Symbol createSymbol(int offset, Kind kind, Binding binding, int size, String name) {
if (kind != Kind.NATIVE_FUNCTION) {
throw new UnsupportedOperationException("Must be external functions: " + name);
}
Symbol symbol = new Symbol(offset, kind, binding, null, size, name);
addSymbol(symbol);
return symbol;
}
public Integer getStringOffset(String name) {
return offsetStringTable.get(name);
}
private static void appendBytes(ByteContainer byteContainer, byte[] targetCode, int offset, int size) {
byteContainer.appendBytes(targetCode, offset, size);
}
public void appendCodeBytes(byte[] targetCode, int offset, int size) {
appendBytes(codeContainer, targetCode, offset, size);
}
public void appendIntToCode(int value) {
codeContainer.appendInt(value);
}
public int appendExtLinkageGotBytes(byte[] bytes, int offset, int size) {
int startOffset = extLinkageGOTContainer.getByteStreamSize();
appendBytes(extLinkageGOTContainer, bytes, offset, size);
return startOffset;
}
public int appendMetaspaceGotBytes(byte[] bytes, int offset, int size) {
int startOffset = metaspaceGotContainer.getByteStreamSize();
appendBytes(metaspaceGotContainer, bytes, offset, size);
return startOffset;
}
public void addMetadataGotEntry(int offset) {
metadataGotContainer.appendLong(offset);
}
public int addMetaspaceName(String name) {
Integer value = metaspaceNames.get(name);
if (value != null) {
return value.intValue();
}
int nameOffset = alignUp(metaspaceNamesContainer, 8);
try {
ByteArrayOutputStream bout = new ByteArrayOutputStream();
DataOutputStream out = new DataOutputStream(bout);
int len = name.length();
if (name.startsWith("Stub")) {
out.writeUTF(name);
} else {
int parenthesesIndex = name.lastIndexOf('(', len - 1);
if (parenthesesIndex > 0) {
int dotIndex = name.lastIndexOf('.', parenthesesIndex - 1);
assert dotIndex > 0 : "method's full name should have '.' : " + name;
String klassName = name.substring(0, dotIndex);
out.writeUTF(klassName);
String methodName = name.substring(dotIndex + 1, parenthesesIndex);
out.writeUTF(methodName);
String signature = name.substring(parenthesesIndex, len);
out.writeUTF(signature);
} else {
out.writeUTF(name);
}
}
out.writeShort(0);
byte[] b = bout.toByteArray();
metaspaceNamesContainer.appendBytes(b, 0, b.length);
metaspaceNames.put(name, nameOffset);
return nameOffset;
} catch (IOException e) {
throw new InternalError("Failed to append bytes to stubs sections", e);
}
}
public Integer addOopSymbol(String oopName) {
Integer oopGotOffset = getStringOffset(oopName);
if (oopGotOffset != null) {
return oopGotOffset;
}
return newOopSymbol(oopName);
}
private Integer newOopSymbol(String oopName) {
int offset = oopGotContainer.getByteStreamSize();
String gotName = "got.ldc." + offset;
Symbol relocationSymbol = oopGotContainer.createGotSymbol(gotName);
if (offset != relocationSymbol.getOffset()) {
throw new InternalError("offset must equal! (" + offset + " vs " + relocationSymbol.getOffset());
}
addStringOffset(oopName, relocationSymbol.getOffset());
return relocationSymbol.getOffset();
}
public int addMetaspaceSymbol(String metaspaceName) {
String gotName = "got." + metaspaceName;
Symbol relocationSymbol = getGotSymbol(gotName);
int metaspaceOffset = -1;
if (relocationSymbol == null) {
metaspaceGotContainer.createGotSymbol(gotName);
}
return metaspaceOffset;
}
public Symbol getGotSymbol(String name) {
assert name.startsWith("got.");
return symbolTable.get(name);
}
public int addTwoSlotMetaspaceSymbol(String metaspaceName) {
String gotName = "got." + metaspaceName;
Symbol previous = getGotSymbol(gotName);
assert previous == null : "should be called only once for: " + metaspaceName;
String gotInitName = "got.init." + metaspaceName;
GotSymbol slot1Symbol = metaspaceGotContainer.createGotSymbol(gotInitName);
GotSymbol slot2Symbol = metaspaceGotContainer.createGotSymbol(gotName);
slot1Symbol.getIndex();
return slot2Symbol.getIndex();
}
public int addMethodsCount(int count, ReadOnlyDataContainer container) {
return appendInt(count, container);
}
private static int appendInt(int count, ReadOnlyDataContainer container) {
int offset = container.getByteStreamSize();
container.appendInt(count);
return offset;
}
public int addConstantData(byte[] data, int alignment) {
int constantDataOffset = alignUp(constantDataContainer, alignment);
constantDataContainer.appendBytes(data, 0, data.length);
alignUp(constantDataContainer, alignment);
return constantDataOffset;
}
public int alignUp(ByteContainer container, int alignment) {
if (Integer.bitCount(alignment) != 1) {
throw new IllegalArgumentException("Must be a power of 2");
}
int offset = container.getByteStreamSize();
int aligned = (offset + (alignment - 1)) & -alignment;
if (aligned < offset || (aligned & (alignment - 1)) != 0) {
throw new RuntimeException("Error aligning: " + offset + " -> " + aligned);
}
if (aligned != offset) {
int nullArraySz = aligned - offset;
byte[] nullArray = new byte[nullArraySz];
container.appendBytes(nullArray, 0, nullArraySz);
offset = aligned;
}
return offset;
}
public void addCodeSegments(int start, int end) {
assert (start % codeSegmentSize) == 0 : "not aligned code";
int currentOffset = codeSegmentsContainer.getByteStreamSize();
int offset = start / codeSegmentSize;
int emptySize = offset - currentOffset;
if (emptySize > 0) {
byte[] emptyArray = new byte[emptySize];
for (int i = 0; i < emptySize; i++) {
emptyArray[i] = (byte) 0xff;
}
appendBytes(codeSegmentsContainer, emptyArray, 0, emptySize);
}
int alignedEnd = (end + (codeSegmentSize - 1)) & -codeSegmentSize;
int segmentsCount = (alignedEnd / codeSegmentSize) - offset;
byte[] segments = new byte[segmentsCount];
int idx = 0;
for (int i = 0; i < segmentsCount; i++) {
segments[i] = (byte) idx;
idx = (idx == 0xfe) ? 1 : (idx + 1);
}
appendBytes(codeSegmentsContainer, segments, 0, segmentsCount);
}
public CodeContainer getExtLinkageContainer() {
return extLinkageContainer;
}
public ByteContainer getExtLinkageGOTContainer() {
return extLinkageGOTContainer;
}
public ByteContainer getMethodMetadataContainer() {
return methodMetadataContainer;
}
public ReadOnlyDataContainer getMetaspaceNamesContainer() {
return metaspaceNamesContainer;
}
public ReadOnlyDataContainer getMethodsOffsetsContainer() {
return methodsOffsetsContainer;
}
public ReadOnlyDataContainer getKlassesOffsetsContainer() {
return klassesOffsetsContainer;
}
public ReadOnlyDataContainer getKlassesDependenciesContainer() {
return klassesDependenciesContainer;
}
public ReadOnlyDataContainer getStubsOffsetsContainer() {
return stubsOffsetsContainer;
}
public ReadOnlyDataContainer getCodeSegmentsContainer() {
return codeSegmentsContainer;
}
public ReadOnlyDataContainer getConstantDataContainer() {
return constantDataContainer;
}
public ByteContainer getMetaspaceGotContainer() {
return metaspaceGotContainer;
}
public ByteContainer getMetadataGotContainer() {
return metadataGotContainer;
}
public ByteContainer getMethodStateContainer() {
return methodStateContainer;
}
public ByteContainer getOopGotContainer() {
return oopGotContainer;
}
public CodeContainer getCodeContainer() {
return codeContainer;
}
public ReadOnlyDataContainer getConfigContainer() {
return configContainer;
}
public Map<Symbol, Relocation> getUniqueRelocationTable() {
return uniqueRelocationTable;
}
public HeaderContainer () {
return headerContainer;
}
}